dhcp: Clear flags

Do not assume that mem_malloc() returns cleared memory.

.github/workflows/ci-linux.yml

@@ -3,6 +3,8 @@ name: CI
 on:
   push:
     branches: [master]
+  pull_request:
+    branches: '*'
 
 jobs:
   build:
@@ -15,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Install deps
       run: sudo apt-get install check ninja-build doxygen
 

.github/workflows/codeql-buildscript.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+sudo apt-get install check ninja-build doxygen
+cp contrib/examples/example_app/lwipcfg.h.ci contrib/examples/example_app/lwipcfg.h
+make -C contrib/ports/unix/check
+mkdir build && cd build && cmake .. -G Ninja && cmake --build .

.github/workflows/codeql.yml

@@ -0,0 +1,124 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: '*'
+
+jobs:
+  analyze:
+    name: Analyze
+    # Runner size impacts CodeQL analysis time. To learn more, please see:
+    #   - https://gh.io/recommended-hardware-resources-for-running-codeql
+    #   - https://gh.io/supported-runners-and-hardware-resources
+    #   - https://gh.io/using-larger-runners
+    # Consider using larger runners for possible analysis time improvements.
+    runs-on: ${{ (matrix.language == 'swift' && 'macos-latest') || 'ubuntu-latest' }}
+    timeout-minutes: ${{ (matrix.language == 'swift' && 120) || 360 }}
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'cpp' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby', 'swift' ]
+        # Use only 'java' to analyze code written in Java, Kotlin or both
+        # Use only 'javascript' to analyze code written in JavaScript, TypeScript or both
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+      with:
+        submodules: recursive
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v3
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+
+        # For more details on CodeQL's query packs, refer to: https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
+        # queries: security-extended,security-and-quality
+        queries: security-and-quality
+
+
+    # Autobuild attempts to build any compiled languages (C/C++, C#, Go, Java, or Swift).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    #- name: Autobuild
+    #  uses: github/codeql-action/autobuild@v3
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+    #   If the Autobuild fails above, remove it and uncomment the following three lines.
+    #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+    - run: |
+        ./.github/workflows/codeql-buildscript.sh
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v3
+      with:
+        category: "/language:${{matrix.language}}"
+        upload: false
+      id: step1
+
+    # Filter out rules with low severity or high false positve rate
+    # Also filter out warnings in third-party code
+    - name: Filter out unwanted errors and warnings
+      uses: advanced-security/filter-sarif@v1
+      with:
+        patterns: |
+          -**:cpp/path-injection
+          -**:cpp/world-writable-file-creation
+          -**:cpp/poorly-documented-function
+          -**:cpp/potentially-dangerous-function
+          -**:cpp/use-of-goto
+          -**:cpp/integer-multiplication-cast-to-long
+          -**:cpp/comparison-with-wider-type
+          -**:cpp/leap-year/*
+          -**:cpp/ambiguously-signed-bit-field
+          -**:cpp/suspicious-pointer-scaling
+          -**:cpp/suspicious-pointer-scaling-void
+          -**:cpp/unsigned-comparison-zero
+          -**/cmake*/Modules/**
+        input: ${{ steps.step1.outputs.sarif-output }}/cpp.sarif
+        output: ${{ steps.step1.outputs.sarif-output }}/cpp.sarif
+
+    - name: Upload CodeQL results to code scanning
+      uses: github/codeql-action/upload-sarif@v3
+      with:
+        sarif_file: ${{ steps.step1.outputs.sarif-output }}
+        category: "/language:${{matrix.language}}"
+
+    - name: Upload CodeQL results as an artifact
+      if: success() || failure()
+      uses: actions/upload-artifact@v4
+      with:
+        name: codeql-results
+        path: ${{ steps.step1.outputs.sarif-output }}
+        retention-days: 5
+
+    - name: Fail if an error is found
+      run: |
+        ./.github/workflows/fail_on_error.py \
+          ${{ steps.step1.outputs.sarif-output }}/cpp.sarif

.github/workflows/fail_on_error.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import json
+import sys
+
+# Return whether SARIF file contains error-level results
+def codeql_sarif_contain_error(filename):
+    with open(filename, 'r') as f:
+        s = json.load(f)
+
+    for run in s.get('runs', []):
+        rules_metadata = run['tool']['driver']['rules']
+        if not rules_metadata:
+            rules_metadata = run['tool']['extensions'][0]['rules']
+
+        for res in run.get('results', []):
+            if 'ruleIndex' in res:
+                rule_index = res['ruleIndex']
+            elif 'rule' in res and 'index' in res['rule']:
+                rule_index = res['rule']['index']
+            else:
+                continue
+            try:
+                rule_level = rules_metadata[rule_index]['defaultConfiguration']['level']
+            except IndexError as e:
+                print(e, rule_index, len(rules_metadata))
+            else:
+                if rule_level == 'error':
+                    return True
+    return False
+
+if __name__ == "__main__":
+    if codeql_sarif_contain_error(sys.argv[1]):
+        sys.exit(1)

.gitignore

@@ -4,6 +4,7 @@
 *.exe
 *lwip_unittests.xml
 *.suo
+*.swp
 *.log
 .depend*
 
@@ -35,8 +36,14 @@
 
 /contrib/ports/win32/msvc/Debug
 /contrib/ports/win32/msvc/Debug unittests
+/contrib/ports/win32/msvc/Debug fuzz
+/contrib/ports/win32/msvc/Debug fuzz2
+/contrib/ports/win32/msvc/Debug fuzz3
 /contrib/ports/win32/msvc/Release
 /contrib/ports/win32/msvc/Release unittests
+/contrib/ports/win32/msvc/Release fuzz
+/contrib/ports/win32/msvc/Release fuzz2
+/contrib/ports/win32/msvc/x64
 /contrib/ports/win32/msvc/*.user
 /contrib/ports/win32/msvc/*.ncb
 /contrib/ports/win32/msvc/*.cache

CHANGELOG

@@ -6,6 +6,63 @@ HISTORY
 
   * [Enter new changes just after this line - do not remove this line]
 
+  ++ Bugfixes:
+
+  2025-06-03: Simon Goldschmidt
+  * ip4_frag/ip6_frag: fix potential NULL-pointer access on memory errors
+
+(STABLE-2.2.1):
+
+  ++ New features:
+
+  2023-10-11: Faidon Liambotis
+  * Add MEM_CUSTOM_ALLOCATOR and make LIBC a subset of it
+
+  2023-09-29: Jiri Findejs
+  * mqtt: support binary Will Message
+
+  ++ Bugfixes:
+
+  2024-02-19: Simon Goldschmidt
+  * tcpip: fix that TCPIP_CORE_LOCK is not released for LWIP_TIMERS==0
+
+  2024-01-09: Simon Goldschmidt
+  * snmp v3, ppp: prevent possible timing attacks by using a constant-runtime-memcmp when
+    checking credentials
+
+  2023-01-04: Simon Goldschmidt
+  * makefsdata: update tinydir.h to newest version (1.2.6)
+
+  2023-10-12: Borys Szefler
+  * dhcp: fix memory corruption when LWIP_DHCP_MAX_DNS_SERVERS  > DNS_MAX_SERVERS
+
+  2023-10-11: Mazakazu
+  * sockets: fix socket leak when using setsockopt/getsockopt hook with LWIP_NETCONN_FULLDUPLEX==1
+
+  2023-10-10: Simon Goldschmidt
+  * sockets: fix bug #63898: allow socket option IPV6_CHECKSUM for both IPPROTO_IPV6 and IPPROTO_RAW
+
+  2023-10-10: Simon Goldschmidt
+  * ipv6: fix ip6_current_header() after reassembly
+
+  2023-10-07: Simon Goldschmidt
+  * ipv6 reassembly: fix detecting holes in reassembled packets
+
+  2023-10-04: Simon Goldschmidt
+  * apps: http client: improve the HTTP client; ensure connection settings are passed
+
+  2023-10-03: Simon Goldschmidt
+  * ipv6: frag: fix bogus icmp6 response on reassembly timeout
+
+  2023-09-28: Szabolcs Szekelyi
+  * httpd: ensure headers are parsed case-insensitive
+
+  2023-09-28: Erik Ekman
+  * Fix ND6 Router Advertisement parsing when NETIF_MAX_HWADDR_LEN is above 6.
+
+  2023-09-27: Hardy Griech
+  * Fix iperf byte counting mode
+
 (STABLE-2.2.0):
 
   2018-10-02: Dirk Ziegelmeier

CMakeLists.txt

@@ -11,7 +11,7 @@ set (LWIP_DEFINITIONS LWIP_DEBUG=1)
 
 if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
   add_subdirectory(${LWIP_DIR}/contrib/ports/win32/example_app)
-elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR ${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
+elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR ${CMAKE_SYSTEM_NAME} STREQUAL "Darwin" OR ${CMAKE_SYSTEM_NAME} STREQUAL "FreeBSD")
   add_subdirectory(${LWIP_DIR}/contrib/ports/unix/example_app)
 else()
   message(WARNING "Host ${CMAKE_SYSTEM_NAME} is not supported to build example_app")
@@ -29,7 +29,9 @@ include(CPack)
 
 # Generate docs before creating source package
 include(src/Filelists.cmake)
-add_custom_target(dist COMMAND ${CMAKE_MAKE_PROGRAM} package_source)
-if (TARGET lwipdocs)
-  add_dependencies(dist lwipdocs)
+if (NOT TARGET dist)
+  add_custom_target(dist COMMAND ${CMAKE_MAKE_PROGRAM} package_source)
+  if (TARGET lwipdocs)
+    add_dependencies(dist lwipdocs)
+  endif()
 endif()

UPGRADING

@@ -10,6 +10,7 @@ with newer versions.
   * The eth_addr_cmp and ip_addr_cmp set of functions have been renamed to eth_addr_eq, ip_addr_eq
     and so on, since they return non-zero on equality. Macros for the old names exist.
   * The sio_write function used by PPP now takes the data argument as const.
+  * The prev field in the snmp_varbind struct has been removed.
 
 (2.2.0)
 

codespell_check.sh

@@ -39,7 +39,9 @@ CODESPELL_OPTS="-q 2"  # Disable "WARNING: Binary file"
 CODESPELL_OPTS+=" --check-hidden"
 # Disable false positives "nd  => and, 2nd", "ans => and", "tolen => token",
 # "ofo => of", "WAN => WANT", "mut => must, mutt, moot"
-CODESPELL_OPTS+=" --ignore-words-list=nd,ans,tolen,ofo,wan,mut "
+CODESPELL_OPTS+=" --ignore-words-list=nd,ans,tolen,ofo,wan,mut,clen,useg,clos "
+CODESPELL_OPTS+=" --ignore-words-list=devine,clinet,linz,garantie,explicite,numer "
+CODESPELL_OPTS+=" --ignore-words-list=skool "
 # propagate all options to codespell -> pass "-w" to this script to write changes
 CODESPELL_OPTS+="$@"
 

contrib/apps/ping/ping.c

@@ -268,7 +268,7 @@ ping_thread(void *arg)
   LWIP_ASSERT("setting receive timeout failed", ret == 0);
   LWIP_UNUSED_ARG(ret);
 
-  while (1) {
+  while (ping_target != NULL) {
     if (ping_send(s, ping_target) == ERR_OK) {
       LWIP_DEBUGF( PING_DEBUG, ("ping: send "));
       ip_addr_debug_print(PING_DEBUG, ping_target);
@@ -285,6 +285,7 @@ ping_thread(void *arg)
     }
     sys_msleep(PING_DELAY);
   }
+  lwip_close(s);
 }
 
 #else /* PING_USE_SOCKETS */
@@ -297,10 +298,11 @@ ping_recv(void *arg, struct raw_pcb *pcb, struct pbuf *p, const ip_addr_t *addr)
   LWIP_UNUSED_ARG(arg);
   LWIP_UNUSED_ARG(pcb);
   LWIP_UNUSED_ARG(addr);
+  LWIP_ASSERT("addr != NULL", addr != NULL);
   LWIP_ASSERT("p != NULL", p != NULL);
 
-  if ((p->tot_len >= (PBUF_IP_HLEN + sizeof(struct icmp_echo_hdr))) &&
-      pbuf_remove_header(p, PBUF_IP_HLEN) == 0) {
+  if ((p->tot_len >= (IP_HLEN + sizeof(struct icmp_echo_hdr))) &&
+      pbuf_remove_header(p, IP_HLEN) == 0) {
     iecho = (struct icmp_echo_hdr *)p->payload;
 
     if ((iecho->id == PING_ID) && (iecho->seqno == lwip_htons(ping_seq_num))) {
@@ -314,7 +316,7 @@ ping_recv(void *arg, struct raw_pcb *pcb, struct pbuf *p, const ip_addr_t *addr)
       return 1; /* eat the packet */
     }
     /* not eaten, restore original packet */
-    pbuf_add_header(p, PBUF_IP_HLEN);
+    pbuf_add_header(p, IP_HLEN);
   }
 
   return 0; /* don't eat the packet */
@@ -376,14 +378,33 @@ void
 ping_send_now(void)
 {
   LWIP_ASSERT("ping_pcb != NULL", ping_pcb != NULL);
+  LWIP_ASSERT("ping_target != NULL", ping_target != NULL);
   ping_send(ping_pcb, ping_target);
 }
 
+static void
+ping_raw_stop(void)
+{
+  sys_untimeout(ping_timeout, ping_pcb);
+  if (ping_pcb != NULL) {
+    raw_remove(ping_pcb);
+    ping_pcb = NULL;
+  }
+}
+
 #endif /* PING_USE_SOCKETS */
 
+/**
+ * Initialize thread (socket mode) or timer (callback mode) to cyclically send pings
+ * to a target.
+ * Running ping is implicitly stopped.
+ */
 void
 ping_init(const ip_addr_t* ping_addr)
 {
+  ping_stop();
+
+  LWIP_ASSERT("ping_addr != NULL", ping_addr != NULL);
   ping_target = ping_addr;
 
 #if PING_USE_SOCKETS
@@ -393,4 +414,15 @@ ping_init(const ip_addr_t* ping_addr)
 #endif /* PING_USE_SOCKETS */
 }
 
+/**
+ * Stop sending more pings.
+ */
+void ping_stop(void)
+{
+#if !PING_USE_SOCKETS
+  ping_raw_stop();
+#endif /* !PING_USE_SOCKETS */
+  ping_target = NULL;
+}
+
 #endif /* LWIP_RAW */

contrib/apps/ping/ping.h

@@ -11,6 +11,7 @@
 #endif
 
 void ping_init(const ip_addr_t* ping_addr);
+void ping_stop(void);
 
 #if !PING_USE_SOCKETS
 void ping_send_now(void);

contrib/examples/example_app/lwipopts.h

@@ -130,7 +130,7 @@ a lot of data that needs to be copied, this should be set high. */
 /* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
    per active UDP "connection". */
 #define MEMP_NUM_UDP_PCB        8
-/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
+/* MEMP_NUM_TCP_PCB: the number of simultaneously active TCP
    connections. */
 #define MEMP_NUM_TCP_PCB        5
 /* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
@@ -139,7 +139,7 @@ a lot of data that needs to be copied, this should be set high. */
 /* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
    segments. */
 #define MEMP_NUM_TCP_SEG        16
-/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
+/* MEMP_NUM_SYS_TIMEOUT: the number of simultaneously active
    timeouts. */
 #define MEMP_NUM_SYS_TIMEOUT    17
 

contrib/examples/mqtt/mqtt_example.c

@@ -54,6 +54,7 @@ static const struct mqtt_connect_client_info_t mqtt_client_info =
   100,  /* keep alive */
   NULL, /* will_topic */
   NULL, /* will_msg */
+  0,    /* will_msg_len */
   0,    /* will_qos */
   0     /* will_retain */
 #if LWIP_ALTCP && LWIP_ALTCP_TLS

contrib/examples/tftp/tftp_example.c

@@ -141,6 +141,7 @@ tftp_example_init_client(void)
   ip_addr_t srv;
   int ret = ipaddr_aton(LWIP_TFTP_EXAMPLE_CLIENT_REMOTEIP, &srv);
   LWIP_ASSERT("ipaddr_aton failed", ret == 1);
+  LWIP_UNUSED_ARG(ret);
 
   err = tftp_init_client(&tftp);
   LWIP_ASSERT("tftp_init_client failed", err == ERR_OK);

contrib/ports/unix/lib/lwipopts.h

@@ -109,7 +109,7 @@
 #define MEMP_NUM_UDP_PCB                4
 
 /**
- * MEMP_NUM_TCP_PCB: the number of simulatenously active TCP connections.
+ * MEMP_NUM_TCP_PCB: the number of simultaneously active TCP connections.
  * (requires the LWIP_TCP option)
  */
 #define MEMP_NUM_TCP_PCB                4
@@ -133,7 +133,7 @@
 #define MEMP_NUM_REASSDATA              1
 
 /**
- * MEMP_NUM_ARP_QUEUE: the number of simulateously queued outgoing
+ * MEMP_NUM_ARP_QUEUE: the number of simultaneously queued outgoing
  * packets (pbufs) that are waiting for an ARP request (to resolve
  * their destination address) to finish.
  * (requires the ARP_QUEUEING option)
@@ -141,7 +141,7 @@
 #define MEMP_NUM_ARP_QUEUE              2
 
 /**
- * MEMP_NUM_SYS_TIMEOUT: the number of simulateously active timeouts.
+ * MEMP_NUM_SYS_TIMEOUT: the number of simultaneously active timeouts.
  * (requires NO_SYS==0)
  */
 #define MEMP_NUM_SYS_TIMEOUT            8
@@ -238,7 +238,7 @@
 /**
  * IP_FRAG_USES_STATIC_BUF==1: Use a static MTU-sized buffer for IP
  * fragmentation. Otherwise pbufs are allocated and reference the original
-    * packet data to be fragmented.
+ * packet data to be fragmented.
 */
 #define IP_FRAG_USES_STATIC_BUF         0
 
@@ -341,7 +341,7 @@
  */
 #define LWIP_TCP                        1
 
-#define LWIP_LISTEN_BACKLOG             0
+#define TCP_LISTEN_BACKLOG              0
 
 /*
    ----------------------------------
@@ -359,7 +359,6 @@
  * PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. The default is
  * designed to accommodate single full size TCP frame in one pbuf, including
  * TCP_MSS, IP header, and link header.
-*
  */
 #define PBUF_POOL_BUFSIZE               LWIP_MEM_ALIGN_SIZE(TCP_MSS+40+PBUF_LINK_HLEN)
 

contrib/ports/unix/port/include/arch/cc.h

@@ -41,6 +41,8 @@
 #define LWIP_UNIX_MACH
 #elif defined __OpenBSD__
 #define LWIP_UNIX_OPENBSD
+#elif defined __FreeBSD__
+#define LWIP_UNIX_FREEBSD
 #elif defined __FreeBSD_kernel__ && __GLIBC__
 #define LWIP_UNIX_KFREEBSD
 #elif defined __CYGWIN__
@@ -52,6 +54,10 @@
 #define LWIP_TIMEVAL_PRIVATE 0
 #include <sys/time.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define LWIP_ERRNO_INCLUDE <errno.h>
 
 #if defined(LWIP_UNIX_LINUX) || defined(LWIP_UNIX_HURD) || defined(LWIP_UNIX_KFREEBSD)
@@ -86,4 +92,8 @@ typedef struct sio_status_s sio_status_t;
 
 typedef unsigned int sys_prot_t;
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LWIP_ARCH_CC_H */

contrib/ports/unix/port/include/arch/perf.h

@@ -34,6 +34,10 @@
 
 #include <sys/times.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifdef PERF
 #define PERF_START  { \
                          unsigned long __c1l, __c1h, __c2l, __c2h; \
@@ -60,4 +64,8 @@ void perf_print_times(struct tms *start, struct tms *end, char *key);
 
 void perf_init(char *fname);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LWIP_ARCH_PERF_H */

contrib/ports/unix/port/include/arch/sys_arch.h

@@ -32,6 +32,10 @@
 #ifndef LWIP_ARCH_SYS_ARCH_H
 #define LWIP_ARCH_SYS_ARCH_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define SYS_MBOX_NULL NULL
 #define SYS_SEM_NULL  NULL
 
@@ -87,4 +91,8 @@ void sys_unlock_tcpip_core(void);
 #define UNLOCK_TCPIP_CORE()        sys_unlock_tcpip_core()
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LWIP_ARCH_SYS_ARCH_H */

contrib/ports/unix/port/include/netif/fifo.h

@@ -3,6 +3,10 @@
 
 #include "lwip/sys.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /** How many bytes in fifo */
 #define FIFOSIZE 2048
 
@@ -50,5 +54,9 @@ void fifoPut(fifo_t * fifo, int fd);
 */
 void fifoInit(fifo_t * fifo);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
 

contrib/ports/unix/port/include/netif/list.h

@@ -2,6 +2,10 @@
 #ifndef LWIP_LIST_H
 #define LWIP_LIST_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct elem;
 
 struct list {
@@ -23,4 +27,8 @@ void list_delete(struct list *list);
 int list_remove(struct list *list, void *elem);
 void list_map(struct list *list, void (* func)(void *arg));
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

contrib/ports/unix/port/include/netif/pcapif.h

@@ -34,6 +34,14 @@
 
 #include "lwip/netif.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 err_t pcapif_init(struct netif *netif);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LWIP_PCAPIF_H */

contrib/ports/unix/port/include/netif/sio.h

@@ -6,6 +6,10 @@
 #include "netif/fifo.h"
 /*#include "netif/pppif.h"*/
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct sio_status_s {
 	int fd;
 	fifo_t myfifo;
@@ -56,5 +60,9 @@ void sio_flush( sio_status_t * siostat );
 */
 void sio_change_baud( sioBaudrates baud, sio_status_t * siostat );
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
 

contrib/ports/unix/port/include/netif/tapif.h

@@ -34,10 +34,18 @@
 
 #include "lwip/netif.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 err_t tapif_init(struct netif *netif);
 void tapif_poll(struct netif *netif);
 #if NO_SYS
 int tapif_select(struct netif *netif);
 #endif /* NO_SYS */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LWIP_TAPIF_H */

contrib/ports/unix/port/include/netif/vdeif.h

@@ -34,10 +34,18 @@
 
 #include "lwip/netif.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 err_t vdeif_init(struct netif *netif);
 void vdeif_poll(struct netif *netif);
 #if NO_SYS
 int vdeif_select(struct netif *netif);
 #endif /* NO_SYS */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LWIP_VDEIF_H */

contrib/ports/unix/port/netif/sio.c

@@ -1,7 +1,10 @@
 /* Author: Magnus Ivarsson <magnus.ivarsson@volvo.com> */
 
 /* to get rid of implicit function declarations */
+#ifndef __FreeBSD__
+/* defining this on FreeBSD hides non-standard defines that sio.c depends on */
 #define _XOPEN_SOURCE 600
+#endif
 #define _GNU_SOURCE
 
 /* build with Darwin C extensions not part of POSIX, i.e. FASYNC, SIGIO.
@@ -35,8 +38,10 @@
 
 #include <stdlib.h>
 #include <stdio.h>
-#if defined(LWIP_UNIX_OPENBSD)
+#if defined(LWIP_UNIX_OPENBSD) || defined(LWIP_UNIX_MACH)
 #include <util.h>
+#elif defined(LWIP_UNIX_FREEBSD)
+#include <libutil.h>
 #endif
 #include <termios.h>
 #include <stdio.h>

contrib/ports/unix/posixlib/CMakeLists.txt

@@ -84,7 +84,7 @@ install(DIRECTORY "${LWIP_DIR}/contrib/ports/unix/port/include/netif"
     FILES_MATCHING PATTERN "*.h"
 )
 
-install(DIRECTORY "${LWIP_DIR}/contrib/ports/unix/linuxlib/include/posix"
+install(DIRECTORY "${LWIP_DIR}/contrib/ports/unix/posixlib/include/posix"
     DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/lwip"
     FILES_MATCHING PATTERN "*.h"
 )

contrib/ports/unix/posixlib/include/posix/sockets.h

@@ -120,7 +120,7 @@ const char *lwip_inet_ntop(int af, const void *src, char *dst, socklen_t size);
 int lwip_inet_pton(int af, const char *src, void *dst);
 #endif
 
-/* Unsuported indetifiers */
+/* Unsupported identifiers */
 #ifndef SO_NO_CHECK
 #define SO_NO_CHECK         0xFF
 #endif

contrib/ports/win32/include/arch/cc.h

@@ -80,7 +80,11 @@ typedef int sys_prot_t;
 
 #define S16_F "hd"
 #define X16_F "hx"
+#ifdef _WIN64
+#define SZT_F "llu"
+#else
 #define SZT_F "lu"
+#endif
 #endif /* _MSC_VER */
 
 /* Compiler hints for packing structures */

contrib/ports/win32/msvc/libcheck.vcxproj

@@ -5,14 +5,23 @@
       <Configuration>Debug</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
     <ProjectConfiguration Include="Release|Win32">
       <Configuration>Release</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{EBB156DC-01BF-47B2-B69C-1A750B6B5F09}</ProjectGuid>
     <RootNamespace>libcheck</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
@@ -21,20 +30,37 @@
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <CharacterSet>MultiByte</CharacterSet>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
     <_ProjectFileVersion>10.0.40219.1</_ProjectFileVersion>
@@ -43,6 +69,14 @@
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(Configuration)\$(ProjectName)\</OutDir>
     <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(Configuration)\$(ProjectName)\</IntDir>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <OutDir>$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <OutDir>$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
+  </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <Optimization>Disabled</Optimization>
@@ -55,6 +89,17 @@
       <DebugInformationFormat>EditAndContinue</DebugInformationFormat>
     </ClCompile>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <AdditionalIncludeDirectories>..\check;..\..\..\..\..\check\src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_LIB;WIN32;_DEBUG;HAVE_CONFIG_H;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+  </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
@@ -67,6 +112,18 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
     </ClCompile>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <Optimization>MaxSpeed</Optimization>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <AdditionalIncludeDirectories>..\check;..\..\..\..\..\check\src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;HAVE_CONFIG_H;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <WarningLevel>Level3</WarningLevel>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+  </ItemDefinitionGroup>
   <ItemGroup>
     <ClInclude Include="..\..\..\..\..\check\lib\libcompat.h" />
     <ClInclude Include="..\check\config.h" />

contrib/ports/win32/msvc/lwIP.vcxproj

@@ -1,25 +1,58 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug fuzz|Win32">
+      <Configuration>Debug fuzz</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug fuzz|x64">
+      <Configuration>Debug fuzz</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
     <ProjectConfiguration Include="Debug unittests|Win32">
       <Configuration>Debug unittests</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug unittests|x64">
+      <Configuration>Debug unittests</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release fuzz|Win32">
+      <Configuration>Release fuzz</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release fuzz|x64">
+      <Configuration>Release fuzz</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
     <ProjectConfiguration Include="Release unittests|Win32">
       <Configuration>Release unittests</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Release unittests|x64">
+      <Configuration>Release unittests</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
     <ProjectConfiguration Include="Release|Win32">
       <Configuration>Release</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{2CC276FA-B226-49C9-8F82-7FCD5A228E28}</ProjectGuid>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release unittests|Win32'" Label="Configuration">
@@ -28,24 +61,72 @@
     <CharacterSet>MultiByte</CharacterSet>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release unittests|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release fuzz|Win32'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release fuzz|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug unittests|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <CharacterSet>MultiByte</CharacterSet>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug unittests|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug fuzz|Win32'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug fuzz|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <CharacterSet>MultiByte</CharacterSet>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <CharacterSet>MultiByte</CharacterSet>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
@@ -53,30 +134,90 @@
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     <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release unittests|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
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+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release fuzz|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release fuzz|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
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+    <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
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     <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(Configuration)\$(ProjectName)\</IntDir>
     <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug unittests|Win32'">$(Configuration)\$(ProjectName)\</OutDir>
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     <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(Configuration)\$(ProjectName)\</OutDir>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <OutDir>$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug fuzz|x64'">
+    <OutDir>$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug unittests|x64'">
+    <OutDir>$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <OutDir>$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release fuzz|x64'">
+    <OutDir>$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
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+    <OutDir>$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
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   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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       <Optimization>MaxSpeed</Optimization>
@@ -101,6 +242,30 @@
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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+      <Optimization>MaxSpeed</Optimization>
+      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+      <AdditionalIncludeDirectories>..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..\..\..\examples\example_app;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <StringPooling>true</StringPooling>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <ProgramDataBaseFileName>$(IntDir)$(ProjectName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level4</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <CompileAs>Default</CompileAs>
+      <TreatWarningAsError>true</TreatWarningAsError>
+    </ClCompile>
+    <ResourceCompile>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x0407</Culture>
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@@ -125,6 +290,30 @@
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     </Lib>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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+      <AdditionalIncludeDirectories>..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..\..\..\examples\example_app;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_LIB;WIN32;_DEBUG;LWIP_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <PrecompiledHeader>
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+      <ProgramDataBaseFileName>$(IntDir)$(ProjectName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level4</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <CompileAs>Default</CompileAs>
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@@ -149,6 +338,78 @@
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+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
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+      <WarningLevel>Level4</WarningLevel>
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+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <CompileAs>Default</CompileAs>
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+    <ResourceCompile>
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+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release fuzz|x64'">..\..\..\..\..\mbedtls\include;..\..\..\..\test\unit;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <ClCompile Include="..\..\..\..\src\apps\http\altcp_proxyconnect.c" />
     <ClCompile Include="..\..\..\..\src\apps\http\http_client.c" />
@@ -362,9 +791,17 @@
     <ClCompile Include="..\..\..\..\src\apps\http\fs.c" />
     <ClCompile Include="..\..\..\..\src\apps\http\fsdata.c">
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug unittests|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug unittests|x64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug fuzz|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug fuzz|x64'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release unittests|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release unittests|x64'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release fuzz|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release fuzz|x64'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</ExcludedFromBuild>
     </ClCompile>
     <ClCompile Include="..\..\..\..\src\apps\http\httpd.c" />
     <ClCompile Include="..\..\..\..\src\apps\snmp\snmp_asn1.c" />
@@ -393,15 +830,25 @@
     <ClCompile Include="..\..\..\..\src\apps\mdns\mdns.c" />
     <ClCompile Include="..\..\..\..\src\apps\snmp\snmpv3_mbedtls.c">
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug unittests|Win32'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug unittests|x64'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug fuzz|Win32'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug fuzz|x64'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release unittests|Win32'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release unittests|x64'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release fuzz|Win32'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release fuzz|x64'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|x64'">..\..\..\..\..\mbedtls\include;..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..;..\..\..\apps\snmp_private_mib;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <ClCompile Include="..\..\..\..\src\netif\zepif.c" />
     <ClCompile Include="..\sio.c" />
     <ClCompile Include="..\sys_arch.c">
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug unittests|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Debug unittests|x64'">true</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release unittests|Win32'">true</ExcludedFromBuild>
+      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='Release unittests|x64'">true</ExcludedFromBuild>
     </ClCompile>
   </ItemGroup>
   <ItemGroup>

contrib/ports/win32/msvc/lwIP_Test.sln

@@ -1,5 +1,7 @@
-Microsoft Visual Studio Solution File, Format Version 11.00
-# Visual C++ Express 2010
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.7.34031.279
+MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lwIP_Test", "lwIP_Test.vcxproj", "{8CC0CE51-32CF-4585-BFAF-A9343BC5A96D}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lwIP pcapif", "lwIP_pcapif.vcxproj", "{6F44E49E-9F21-4144-91EC-53B92AEF62CE}"
@@ -11,25 +13,43 @@ EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
 		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{8CC0CE51-32CF-4585-BFAF-A9343BC5A96D}.Debug|Win32.ActiveCfg = Debug|Win32
 		{8CC0CE51-32CF-4585-BFAF-A9343BC5A96D}.Debug|Win32.Build.0 = Debug|Win32
+		{8CC0CE51-32CF-4585-BFAF-A9343BC5A96D}.Debug|x64.ActiveCfg = Debug|x64
+		{8CC0CE51-32CF-4585-BFAF-A9343BC5A96D}.Debug|x64.Build.0 = Debug|x64
 		{8CC0CE51-32CF-4585-BFAF-A9343BC5A96D}.Release|Win32.ActiveCfg = Release|Win32
 		{8CC0CE51-32CF-4585-BFAF-A9343BC5A96D}.Release|Win32.Build.0 = Release|Win32
+		{8CC0CE51-32CF-4585-BFAF-A9343BC5A96D}.Release|x64.ActiveCfg = Release|x64
+		{8CC0CE51-32CF-4585-BFAF-A9343BC5A96D}.Release|x64.Build.0 = Release|x64
 		{6F44E49E-9F21-4144-91EC-53B92AEF62CE}.Debug|Win32.ActiveCfg = Debug|Win32
 		{6F44E49E-9F21-4144-91EC-53B92AEF62CE}.Debug|Win32.Build.0 = Debug|Win32
+		{6F44E49E-9F21-4144-91EC-53B92AEF62CE}.Debug|x64.ActiveCfg = Debug|x64
+		{6F44E49E-9F21-4144-91EC-53B92AEF62CE}.Debug|x64.Build.0 = Debug|x64
 		{6F44E49E-9F21-4144-91EC-53B92AEF62CE}.Release|Win32.ActiveCfg = Release|Win32
 		{6F44E49E-9F21-4144-91EC-53B92AEF62CE}.Release|Win32.Build.0 = Release|Win32
+		{6F44E49E-9F21-4144-91EC-53B92AEF62CE}.Release|x64.ActiveCfg = Release|x64
+		{6F44E49E-9F21-4144-91EC-53B92AEF62CE}.Release|x64.Build.0 = Release|x64
 		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|Win32.ActiveCfg = Debug|Win32
 		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|Win32.Build.0 = Debug|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|x64.ActiveCfg = Debug|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|x64.Build.0 = Debug|x64
 		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|Win32.ActiveCfg = Release|Win32
 		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|Win32.Build.0 = Release|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|x64.ActiveCfg = Release|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|x64.Build.0 = Release|x64
 		{0BFC0F21-8E84-4E68-A9E1-CE2A09B72F6D}.Debug|Win32.ActiveCfg = Debug|Win32
 		{0BFC0F21-8E84-4E68-A9E1-CE2A09B72F6D}.Debug|Win32.Build.0 = Debug|Win32
+		{0BFC0F21-8E84-4E68-A9E1-CE2A09B72F6D}.Debug|x64.ActiveCfg = Debug|x64
+		{0BFC0F21-8E84-4E68-A9E1-CE2A09B72F6D}.Debug|x64.Build.0 = Debug|x64
 		{0BFC0F21-8E84-4E68-A9E1-CE2A09B72F6D}.Release|Win32.ActiveCfg = Release|Win32
 		{0BFC0F21-8E84-4E68-A9E1-CE2A09B72F6D}.Release|Win32.Build.0 = Release|Win32
+		{0BFC0F21-8E84-4E68-A9E1-CE2A09B72F6D}.Release|x64.ActiveCfg = Release|x64
+		{0BFC0F21-8E84-4E68-A9E1-CE2A09B72F6D}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

contrib/ports/win32/msvc/lwIP_Test.vcxproj

@@ -5,14 +5,23 @@
       <Configuration>Debug</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
     <ProjectConfiguration Include="Release|Win32">
       <Configuration>Release</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{8CC0CE51-32CF-4585-BFAF-A9343BC5A96D}</ProjectGuid>
     <RootNamespace>lwIP_test</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@@ -21,12 +30,24 @@
     <CharacterSet>MultiByte</CharacterSet>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <CharacterSet>MultiByte</CharacterSet>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
@@ -34,17 +55,26 @@
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
+  </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
+  </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
     <_ProjectFileVersion>10.0.40219.1</_ProjectFileVersion>
-    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">.\$(Configuration)\</OutDir>
-    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">.\$(Configuration)\$(ProjectName)\</IntDir>
+    <IntDir>$(Configuration)\$(ProjectName)\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</LinkIncremental>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</LinkIncremental>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</LinkIncremental>
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <Midl>
@@ -88,6 +118,47 @@
       <DelayLoadDLLs>Packet.dll;wpcap.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
     </Link>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Midl>
+      <TypeLibraryName>.\Release/test.tlb</TypeLibraryName>
+      <HeaderFileName>
+      </HeaderFileName>
+    </Midl>
+    <ClCompile>
+      <Optimization>MaxSpeed</Optimization>
+      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+      <AdditionalIncludeDirectories>..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..\..\..\examples\example_app;..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_DEPRECATE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <StringPooling>true</StringPooling>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <PrecompiledHeaderOutputFile>$(IntDir)$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <ProgramDataBaseFileName>$(IntDir)$(ProjectName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level4</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <CompileAs>Default</CompileAs>
+      <TreatWarningAsError>true</TreatWarningAsError>
+    </ClCompile>
+    <ResourceCompile>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x0407</Culture>
+    </ResourceCompile>
+    <Link>
+      <AdditionalDependencies>Packet.lib;wpcap.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <AdditionalLibraryDirectories>$(PCAP_DIR)\Lib;..\..\..\..\..\winpcap\WpdPack\Lib\x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <ProgramDatabaseFile>.\Release/test.pdb</ProgramDatabaseFile>
+      <SubSystem>Console</SubSystem>
+      <RandomizedBaseAddress>false</RandomizedBaseAddress>
+      <DataExecutionPrevention>
+      </DataExecutionPrevention>
+      <GenerateMapFile>true</GenerateMapFile>
+      <MapFileName>$(TargetDir)$(TargetName).map</MapFileName>
+      <DelayLoadDLLs>Packet.dll;wpcap.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
+    </Link>
+  </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <Midl>
       <TypeLibraryName>.\Debug/test.tlb</TypeLibraryName>
@@ -127,6 +198,47 @@
       <GenerateMapFile>false</GenerateMapFile>
       <MapFileName>$(TargetDir)$(TargetName).map</MapFileName>
       <DelayLoadDLLs>Packet.dll;wpcap.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
+      <ImageHasSafeExceptionHandlers>false</ImageHasSafeExceptionHandlers>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Midl>
+      <TypeLibraryName>.\Debug/test.tlb</TypeLibraryName>
+      <HeaderFileName>
+      </HeaderFileName>
+    </Midl>
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <AdditionalIncludeDirectories>..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..\..\..\examples\example_app;..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_CONSOLE;WIN32;_DEBUG;LWIP_DEBUG;_CRT_SECURE_NO_DEPRECATE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <PrecompiledHeaderOutputFile>$(IntDir)$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <ProgramDataBaseFileName>$(IntDir)$(ProjectName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level4</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <CompileAs>Default</CompileAs>
+      <TreatWarningAsError>true</TreatWarningAsError>
+    </ClCompile>
+    <ResourceCompile>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x0407</Culture>
+    </ResourceCompile>
+    <Link>
+      <AdditionalDependencies>Packet.lib;wpcap.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <AdditionalLibraryDirectories>$(PCAP_DIR)\Lib;..\..\..\..\..\winpcap\WpdPack\Lib\x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <RandomizedBaseAddress>false</RandomizedBaseAddress>
+      <DataExecutionPrevention>
+      </DataExecutionPrevention>
+      <GenerateMapFile>false</GenerateMapFile>
+      <MapFileName>$(TargetDir)$(TargetName).map</MapFileName>
+      <DelayLoadDLLs>Packet.dll;wpcap.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>

contrib/ports/win32/msvc/lwIP_fuzz.sln

@@ -0,0 +1,78 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.7.34031.279
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lwIP", "lwIP.vcxproj", "{2CC276FA-B226-49C9-8F82-7FCD5A228E28}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lwip_fuzz", "lwip_fuzz.vcxproj", "{71B3B3F4-621C-11EE-8C99-0242AC120002}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug_fuzz2|x64 = Debug_fuzz2|x64
+		Debug_fuzz2|x86 = Debug_fuzz2|x86
+		Debug_fuzz3|x64 = Debug_fuzz3|x64
+		Debug_fuzz3|x86 = Debug_fuzz3|x86
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release_fuzz2|x64 = Release_fuzz2|x64
+		Release_fuzz2|x86 = Release_fuzz2|x86
+		Release_fuzz3|x64 = Release_fuzz3|x64
+		Release_fuzz3|x86 = Release_fuzz3|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug_fuzz2|x64.ActiveCfg = Debug fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug_fuzz2|x64.Build.0 = Debug fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug_fuzz2|x86.ActiveCfg = Debug fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug_fuzz2|x86.Build.0 = Debug fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug_fuzz3|x64.ActiveCfg = Debug fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug_fuzz3|x64.Build.0 = Debug fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug_fuzz3|x86.ActiveCfg = Debug fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug_fuzz3|x86.Build.0 = Debug fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|x64.ActiveCfg = Debug fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|x64.Build.0 = Debug fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|x86.ActiveCfg = Debug fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|x86.Build.0 = Debug fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release_fuzz2|x64.ActiveCfg = Release fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release_fuzz2|x64.Build.0 = Release fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release_fuzz2|x86.ActiveCfg = Release fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release_fuzz2|x86.Build.0 = Release fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release_fuzz3|x64.ActiveCfg = Release fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release_fuzz3|x64.Build.0 = Release fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release_fuzz3|x86.ActiveCfg = Release fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release_fuzz3|x86.Build.0 = Release fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|x64.ActiveCfg = Release fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|x64.Build.0 = Release fuzz|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|x86.ActiveCfg = Release fuzz|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|x86.Build.0 = Release fuzz|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug_fuzz2|x64.ActiveCfg = Debug fuzz2|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug_fuzz2|x64.Build.0 = Debug fuzz2|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug_fuzz2|x86.ActiveCfg = Debug fuzz2|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug_fuzz2|x86.Build.0 = Debug fuzz2|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug_fuzz3|x64.ActiveCfg = Debug fuzz3|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug_fuzz3|x64.Build.0 = Debug fuzz3|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug_fuzz3|x86.ActiveCfg = Debug fuzz3|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug_fuzz3|x86.Build.0 = Debug fuzz3|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug|x64.ActiveCfg = Debug|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug|x64.Build.0 = Debug|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug|x86.ActiveCfg = Debug|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Debug|x86.Build.0 = Debug|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release_fuzz2|x64.ActiveCfg = Release fuzz2|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release_fuzz2|x64.Build.0 = Release fuzz2|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release_fuzz2|x86.ActiveCfg = Release fuzz2|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release_fuzz2|x86.Build.0 = Release fuzz2|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release_fuzz3|x64.ActiveCfg = Release fuzz3|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release_fuzz3|x64.Build.0 = Release fuzz3|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release_fuzz3|x86.ActiveCfg = Release fuzz3|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release_fuzz3|x86.Build.0 = Release fuzz3|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release|x64.ActiveCfg = Release|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release|x64.Build.0 = Release|x64
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release|x86.ActiveCfg = Release|Win32
+		{71B3B3F4-621C-11EE-8C99-0242AC120002}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

contrib/ports/win32/msvc/lwIP_pcapif.vcxproj

@@ -5,15 +5,24 @@
       <Configuration>Debug</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
     <ProjectConfiguration Include="Release|Win32">
       <Configuration>Release</Configuration>
       <Platform>Win32</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectName>lwIP pcapif</ProjectName>
     <ProjectGuid>{6F44E49E-9F21-4144-91EC-53B92AEF62CE}</ProjectGuid>
     <RootNamespace>lwIP pcapif</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
@@ -22,12 +31,24 @@
     <CharacterSet>MultiByte</CharacterSet>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
     <CharacterSet>MultiByte</CharacterSet>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
@@ -35,15 +56,23 @@
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
+  </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(VCTargetsPath)Microsoft.CPP.UpgradeFromVC71.props" />
+  </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
     <_ProjectFileVersion>10.0.40219.1</_ProjectFileVersion>
-    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">.\$(Configuration)\</OutDir>
-    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">.\$(Configuration)\$(ProjectName)\</IntDir>
+    <OutDir>$(Configuration)\$(ProjectName)\</OutDir>
+    <IntDir>$(Configuration)\$(ProjectName)\</IntDir>
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
@@ -67,6 +96,28 @@
     </ResourceCompile>
     <Lib />
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <AdditionalIncludeDirectories>..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..\..\..\examples\example_app;.\;$(PCAP_DIR)\Include;..\..\..\..\..\winpcap\WpdPack\Include\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_LIB;WIN32;_DEBUG;LWIP_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <ProgramDataBaseFileName>$(IntDir)$(ProjectName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level4</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <CompileAs>Default</CompileAs>
+      <TreatWarningAsError>true</TreatWarningAsError>
+    </ClCompile>
+    <ResourceCompile>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x0407</Culture>
+    </ResourceCompile>
+    <Lib />
+  </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
@@ -93,6 +144,32 @@
       <SuppressStartupBanner>true</SuppressStartupBanner>
     </Lib>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <Optimization>MaxSpeed</Optimization>
+      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+      <AdditionalIncludeDirectories>..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..\..\..\examples\example_app;.\;$(PCAP_DIR)\Include;..\..\..\..\..\winpcap\WpdPack\Include\;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <StringPooling>true</StringPooling>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <PrecompiledHeaderOutputFile>$(IntDir)$(TargetName).pch</PrecompiledHeaderOutputFile>
+      <ProgramDataBaseFileName>$(IntDir)$(ProjectName).pdb</ProgramDataBaseFileName>
+      <WarningLevel>Level4</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <CompileAs>Default</CompileAs>
+      <TreatWarningAsError>true</TreatWarningAsError>
+    </ClCompile>
+    <ResourceCompile>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x0407</Culture>
+    </ResourceCompile>
+    <Lib>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+    </Lib>
+  </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\pcapif.c" />
     <ClCompile Include="..\pcapif_helper.c" />

contrib/ports/win32/msvc/lwIP_unittests.sln

@@ -1,5 +1,7 @@
-Microsoft Visual Studio Solution File, Format Version 11.00
-# Visual C++ Express 2010
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.7.34031.279
+MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lwip_unittests", "lwip_unittests.vcxproj", "{6CCABAA4-F86F-4119-AFF8-43C9A4A234C2}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lwIP", "lwIP.vcxproj", "{2CC276FA-B226-49C9-8F82-7FCD5A228E28}"
@@ -9,23 +11,40 @@ EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
 		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{6CCABAA4-F86F-4119-AFF8-43C9A4A234C2}.Debug|Win32.ActiveCfg = Debug|Win32
 		{6CCABAA4-F86F-4119-AFF8-43C9A4A234C2}.Debug|Win32.Build.0 = Debug|Win32
+		{6CCABAA4-F86F-4119-AFF8-43C9A4A234C2}.Debug|x64.ActiveCfg = Debug|x64
+		{6CCABAA4-F86F-4119-AFF8-43C9A4A234C2}.Debug|x64.Build.0 = Debug|x64
 		{6CCABAA4-F86F-4119-AFF8-43C9A4A234C2}.Release|Win32.ActiveCfg = Release|Win32
 		{6CCABAA4-F86F-4119-AFF8-43C9A4A234C2}.Release|Win32.Build.0 = Release|Win32
+		{6CCABAA4-F86F-4119-AFF8-43C9A4A234C2}.Release|x64.ActiveCfg = Release|x64
+		{6CCABAA4-F86F-4119-AFF8-43C9A4A234C2}.Release|x64.Build.0 = Release|x64
 		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|Win32.ActiveCfg = Debug unittests|Win32
 		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|Win32.Build.0 = Debug unittests|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|x64.ActiveCfg = Debug unittests|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Debug|x64.Build.0 = Debug unittests|x64
 		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|Win32.ActiveCfg = Release unittests|Win32
 		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|Win32.Build.0 = Release unittests|Win32
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|x64.ActiveCfg = Release unittests|x64
+		{2CC276FA-B226-49C9-8F82-7FCD5A228E28}.Release|x64.Build.0 = Release unittests|x64
 		{EBB156DC-01BF-47B2-B69C-1A750B6B5F09}.Debug|Win32.ActiveCfg = Debug|Win32
 		{EBB156DC-01BF-47B2-B69C-1A750B6B5F09}.Debug|Win32.Build.0 = Debug|Win32
+		{EBB156DC-01BF-47B2-B69C-1A750B6B5F09}.Debug|x64.ActiveCfg = Debug|x64
+		{EBB156DC-01BF-47B2-B69C-1A750B6B5F09}.Debug|x64.Build.0 = Debug|x64
 		{EBB156DC-01BF-47B2-B69C-1A750B6B5F09}.Release|Win32.ActiveCfg = Release|Win32
 		{EBB156DC-01BF-47B2-B69C-1A750B6B5F09}.Release|Win32.Build.0 = Release|Win32
+		{EBB156DC-01BF-47B2-B69C-1A750B6B5F09}.Release|x64.ActiveCfg = Release|x64
+		{EBB156DC-01BF-47B2-B69C-1A750B6B5F09}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {18F9EDCF-BE44-4F9F-A7F6-5DCF2B7687C5}
+	EndGlobalSection
 EndGlobal

contrib/ports/win32/msvc/lwip_fuzz.vcxproj

@@ -0,0 +1,476 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug fuzz2|Win32">
+      <Configuration>Debug fuzz2</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug fuzz2|x64">
+      <Configuration>Debug fuzz2</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug fuzz3|Win32">
+      <Configuration>Debug fuzz3</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug fuzz3|x64">
+      <Configuration>Debug fuzz3</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release fuzz2|Win32">
+      <Configuration>Release fuzz2</Configuration>
+      <Platform>Win32</Platform>
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+    <ProjectConfiguration Include="Release fuzz2|x64">
+      <Configuration>Release fuzz2</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release fuzz3|Win32">
+      <Configuration>Release fuzz3</Configuration>
+      <Platform>Win32</Platform>
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+    <ProjectConfiguration Include="Release fuzz3|x64">
+      <Configuration>Release fuzz3</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{71B3B3F4-621C-11EE-8C99-0242AC120002}</ProjectGuid>
+    <RootNamespace>lwip_fuzz</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <PlatformToolset>v143</PlatformToolset>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <PlatformToolset>v143</PlatformToolset>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release fuzz3|Win32'" Label="Configuration">
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+    <CharacterSet>MultiByte</CharacterSet>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
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+    <ConfigurationType>Application</ConfigurationType>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug fuzz2|Win32'" Label="Configuration">
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug fuzz2|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
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+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release fuzz3|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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contrib/ports/win32/msvc/lwip_unittests.vcxproj

@@ -5,14 +5,23 @@
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contrib/ports/win32/msvc/makefsdata.vcxproj

@@ -5,10 +5,18 @@
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     <Keyword>Win32Proj</Keyword>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
@@ -25,27 +34,45 @@
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
     <PlatformToolset>v143</PlatformToolset>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v143</PlatformToolset>
+  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
     <_ProjectFileVersion>10.0.40219.1</_ProjectFileVersion>
+    <IntDir>$(Configuration)\$(ProjectName)\</IntDir>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</LinkIncremental>
-    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(SolutionDir)$(Configuration)\</OutDir>
-    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(Configuration)\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</LinkIncremental>
     <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</LinkIncremental>
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
@@ -70,6 +97,27 @@
       <TargetMachine>MachineX86</TargetMachine>
     </Link>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <AdditionalIncludeDirectories>..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..\..\..\examples\example_app;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <RandomizedBaseAddress>false</RandomizedBaseAddress>
+      <DataExecutionPrevention>
+      </DataExecutionPrevention>
+    </Link>
+  </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
@@ -95,6 +143,30 @@
       <TargetMachine>MachineX86</TargetMachine>
     </Link>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <Optimization>MaxSpeed</Optimization>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <AdditionalIncludeDirectories>..\..\..\..\src\include;..\..\..\..\src\include\ipv4;..\..\..\..\src\include\ipv6;..\include;..\..\..\examples\example_app;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <OptimizeReferences>true</OptimizeReferences>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <RandomizedBaseAddress>false</RandomizedBaseAddress>
+      <DataExecutionPrevention>
+      </DataExecutionPrevention>
+    </Link>
+  </ItemDefinitionGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

contrib/ports/win32/pcapif.c

@@ -679,12 +679,17 @@ pcapif_shutdown(struct netif *netif)
 #endif /* PCAPIF_RX_USE_THREAD */
     if (pa->adapter) {
       pcap_breakloop(pa->adapter);
-      pcap_close(pa->adapter);
     }
 #if PCAPIF_RX_USE_THREAD
     /* wait for rxthread to end */
-    while(pa->rx_running);
+    while (pa->rx_running) {
+      Sleep(100);
+    }
 #endif /* PCAPIF_RX_USE_THREAD */
+    if (pa->adapter) {
+      pcap_close(pa->adapter);
+      pa->adapter = NULL;
+    }
 #if PCAPIF_HANDLE_LINKSTATE
     pcapifh_linkstate_close(pa->link_state);
 #endif /* PCAPIF_HANDLE_LINKSTATE */

contrib/ports/win32/pcapif_helper.c

@@ -115,7 +115,7 @@ pcapifh_free_readonly_mem(void *data)
 }
 
 /**
- * Npcap keeps its DLLs in a different directory for compatiblity with winpcap.
+ * Npcap keeps its DLLs in a different directory for compatibility with winpcap.
  * Make sure they get found by adding that directory to the DLL search path.
  */
 void pcapifh_init_npcap(void)

doc/doxygen/lwip.Doxyfile

@@ -38,7 +38,7 @@ PROJECT_NAME           = "lwIP"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = "2.2.0"
+PROJECT_NUMBER         = "2.2.2.dev"
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

src/Filelists.cmake

@@ -14,11 +14,11 @@ endif()
 
 set(LWIP_VERSION_MAJOR    "2")
 set(LWIP_VERSION_MINOR    "2")
-set(LWIP_VERSION_REVISION "0")
+set(LWIP_VERSION_REVISION "2")
 # LWIP_VERSION_RC is set to LWIP_RC_RELEASE for official releases
 # LWIP_VERSION_RC is set to LWIP_RC_DEVELOPMENT for Git versions
 # Numbers 1..31 are reserved for release candidates
-set(LWIP_VERSION_RC       "LWIP_RC_RELEASE")
+set(LWIP_VERSION_RC       "LWIP_RC_DEVELOPMENT")
 
 if ("${LWIP_VERSION_RC}" STREQUAL "LWIP_RC_RELEASE")
     set(LWIP_VERSION_STRING

src/api/netdb.c

@@ -40,6 +40,7 @@
 #if LWIP_DNS && LWIP_SOCKET
 
 #include "lwip/err.h"
+#include "lwip/errno.h"
 #include "lwip/mem.h"
 #include "lwip/memp.h"
 #include "lwip/ip_addr.h"
@@ -62,7 +63,7 @@ int h_errno;
 #endif /* LWIP_DNS_API_DECLARE_H_ERRNO */
 
 /** LWIP_DNS_API_HOSTENT_STORAGE: if set to 0 (default), lwip_gethostbyname()
- * returns the same global variabe for all calls (in all threads).
+ * returns the same global variable for all calls (in all threads).
  * When set to 1, your port should provide a function
  *      struct hostent* sys_thread_hostent( struct hostent* h);
  * which have to do a copy of "h" and return a pointer ont the "per-thread"
@@ -382,7 +383,9 @@ lwip_getaddrinfo(const char *nodename, const char *servname,
     /* set up sockaddr */
     inet6_addr_from_ip6addr(&sa6->sin6_addr, ip_2_ip6(&addr));
     sa6->sin6_family = AF_INET6;
+#if LWIP_SOCKET_HAVE_SA_LEN
     sa6->sin6_len = sizeof(struct sockaddr_in6);
+#endif /* LWIP_SOCKET_HAVE_SA_LEN */
     sa6->sin6_port = lwip_htons((u16_t)port_nr);
     sa6->sin6_scope_id = ip6_addr_zone(ip_2_ip6(&addr));
     ai->ai_family = AF_INET6;
@@ -393,7 +396,9 @@ lwip_getaddrinfo(const char *nodename, const char *servname,
     /* set up sockaddr */
     inet_addr_from_ip4addr(&sa4->sin_addr, ip_2_ip4(&addr));
     sa4->sin_family = AF_INET;
+#if LWIP_SOCKET_HAVE_SA_LEN
     sa4->sin_len = sizeof(struct sockaddr_in);
+#endif /* LWIP_SOCKET_HAVE_SA_LEN */
     sa4->sin_port = lwip_htons((u16_t)port_nr);
     ai->ai_family = AF_INET;
 #endif /* LWIP_IPV4 */

src/api/sockets.c

@@ -660,7 +660,7 @@ lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
 {
   struct lwip_sock *sock, *nsock;
   struct netconn *newconn;
-  ip_addr_t naddr;
+  ip_addr_t naddr = {0};
   u16_t port = 0;
   int newsock;
   err_t err;
@@ -699,25 +699,6 @@ lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
   LWIP_ASSERT("invalid socket index", (newsock >= LWIP_SOCKET_OFFSET) && (newsock < NUM_SOCKETS + LWIP_SOCKET_OFFSET));
   nsock = &sockets[newsock - LWIP_SOCKET_OFFSET];
 
-  /* See event_callback: If data comes in right away after an accept, even
-   * though the server task might not have created a new socket yet.
-   * In that case, newconn->socket is counted down (newconn->socket--),
-   * so nsock->rcvevent is >= 1 here!
-   */
-  SYS_ARCH_PROTECT(lev);
-  recvevent = (s16_t)(-1 - newconn->callback_arg.socket);
-  newconn->callback_arg.socket = newsock;
-  SYS_ARCH_UNPROTECT(lev);
-
-  if (newconn->callback) {
-    LOCK_TCPIP_CORE();
-    while (recvevent > 0) {
-      recvevent--;
-      newconn->callback(newconn, NETCONN_EVT_RCVPLUS, 0);
-    }
-    UNLOCK_TCPIP_CORE();
-  }
-
   /* Note that POSIX only requires us to check addr is non-NULL. addrlen must
    * not be NULL if addr is valid.
    */
@@ -738,7 +719,28 @@ lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
       *addrlen = IPADDR_SOCKADDR_GET_LEN(&tempaddr);
     }
     MEMCPY(addr, &tempaddr, *addrlen);
+  }
 
+  /* See event_callback: If data comes in right away after an accept, even
+   * though the server task might not have created a new socket yet.
+   * In that case, newconn->socket is counted down (newconn->socket--),
+   * so nsock->rcvevent is >= 1 here!
+   */
+  SYS_ARCH_PROTECT(lev);
+  recvevent = (s16_t)(-1 - newconn->callback_arg.socket);
+  newconn->callback_arg.socket = newsock;
+  SYS_ARCH_UNPROTECT(lev);
+
+  if (newconn->callback) {
+    LOCK_TCPIP_CORE();
+    while (recvevent > 0) {
+      recvevent--;
+      newconn->callback(newconn, NETCONN_EVT_RCVPLUS, 0);
+    }
+    UNLOCK_TCPIP_CORE();
+  }
+
+  if ((addr != NULL) && (addrlen != NULL)) {
     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d) returning new sock=%d addr=", s, newsock));
     ip_addr_debug_print_val(SOCKETS_DEBUG, naddr);
     LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F"\n", port));
@@ -2920,6 +2922,49 @@ lwip_sockopt_to_ipopt(int optname)
   }
 }
 
+#if LWIP_IPV6 && LWIP_RAW
+static void
+lwip_getsockopt_impl_ipv6_checksum(int s, struct lwip_sock* sock, void* optval)
+{
+  if (sock->conn->pcb.raw->chksum_reqd == 0) {
+    *(int*)optval = -1;
+  }
+  else {
+    *(int*)optval = sock->conn->pcb.raw->chksum_offset;
+  }
+  LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_RAW, IPV6_CHECKSUM) = %d\n",
+    s, (*(int*)optval)));
+}
+
+static int
+lwip_setsockopt_impl_ipv6_checksum(int s, struct lwip_sock* sock, const void* optval, socklen_t optlen)
+{
+  /* It should not be possible to disable the checksum generation with ICMPv6
+   * as per RFC 3542 chapter 3.1 */
+  if (sock->conn->pcb.raw->protocol == IPPROTO_ICMPV6) {
+    done_socket(sock);
+    return EINVAL;
+  }
+
+  LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, int, NETCONN_RAW);
+  if (*(const int*)optval < 0) {
+    sock->conn->pcb.raw->chksum_reqd = 0;
+  }
+  else if (*(const int*)optval & 1) {
+    /* Per RFC3542, odd offsets are not allowed */
+    done_socket(sock);
+    return EINVAL;
+  }
+  else {
+    sock->conn->pcb.raw->chksum_reqd = 1;
+    sock->conn->pcb.raw->chksum_offset = (u16_t) * (const int*)optval;
+  }
+  LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_RAW, IPV6_CHECKSUM, ..) -> %d\n",
+    s, sock->conn->pcb.raw->chksum_reqd));
+  return 0;
+}
+#endif
+
 /** lwip_getsockopt_impl: the actual implementation of getsockopt:
  * same argument as lwip_getsockopt, either called directly or through callback
  */
@@ -2934,6 +2979,7 @@ lwip_getsockopt_impl(int s, int level, int optname, void *optval, socklen_t *opt
 
 #ifdef LWIP_HOOK_SOCKETS_GETSOCKOPT
   if (LWIP_HOOK_SOCKETS_GETSOCKOPT(s, sock, level, optname, optval, optlen, &err)) {
+    done_socket(sock);
     return err;
   }
 #endif
@@ -3169,6 +3215,12 @@ lwip_getsockopt_impl(int s, int level, int optname, void *optval, socklen_t *opt
     /* Level: IPPROTO_IPV6 */
     case IPPROTO_IPV6:
       switch (optname) {
+#if LWIP_IPV6 && LWIP_RAW
+        case IPV6_CHECKSUM:
+          LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, *optlen, int, NETCONN_RAW);
+          lwip_getsockopt_impl_ipv6_checksum(s, sock, optval);
+          break;
+#endif /* LWIP_IPV6 && LWIP_RAW */
         case IPV6_V6ONLY:
           LWIP_SOCKOPT_CHECK_OPTLEN_CONN(sock, *optlen, int);
           *(int *)optval = (netconn_get_ipv6only(sock->conn) ? 1 : 0);
@@ -3219,13 +3271,7 @@ lwip_getsockopt_impl(int s, int level, int optname, void *optval, socklen_t *opt
 #if LWIP_IPV6 && LWIP_RAW
         case IPV6_CHECKSUM:
           LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, *optlen, int, NETCONN_RAW);
-          if (sock->conn->pcb.raw->chksum_reqd == 0) {
-            *(int *)optval = -1;
-          } else {
-            *(int *)optval = sock->conn->pcb.raw->chksum_offset;
-          }
-          LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_RAW, IPV6_CHECKSUM) = %d\n",
-                                      s, (*(int *)optval)) );
+          lwip_getsockopt_impl_ipv6_checksum(s, sock, optval);
           break;
 #endif /* LWIP_IPV6 && LWIP_RAW */
         default:
@@ -3355,6 +3401,7 @@ lwip_setsockopt_impl(int s, int level, int optname, const void *optval, socklen_
 
 #ifdef LWIP_HOOK_SOCKETS_SETSOCKOPT
   if (LWIP_HOOK_SOCKETS_SETSOCKOPT(s, sock, level, optname, optval, optlen, &err)) {
+    done_socket(sock);
     return err;
   }
 #endif
@@ -3646,7 +3693,15 @@ lwip_setsockopt_impl(int s, int level, int optname, const void *optval, socklen_
     /* Level: IPPROTO_IPV6 */
     case IPPROTO_IPV6:
       switch (optname) {
-        case IPV6_V6ONLY:
+#if LWIP_IPV6 && LWIP_RAW
+        case IPV6_CHECKSUM:
+          err = lwip_setsockopt_impl_ipv6_checksum(s, sock, optval, optlen);
+          if (err) {
+            return err;
+          }
+          break;
+#endif /* LWIP_IPV6 && LWIP_RAW */
+      case IPV6_V6ONLY:
           LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB(sock, optlen, int);
           if (*(const int *)optval) {
             netconn_set_ipv6only(sock->conn, 1);
@@ -3744,26 +3799,10 @@ lwip_setsockopt_impl(int s, int level, int optname, const void *optval, socklen_
       switch (optname) {
 #if LWIP_IPV6 && LWIP_RAW
         case IPV6_CHECKSUM:
-          /* It should not be possible to disable the checksum generation with ICMPv6
-           * as per RFC 3542 chapter 3.1 */
-          if (sock->conn->pcb.raw->protocol == IPPROTO_ICMPV6) {
-            done_socket(sock);
-            return EINVAL;
+          err = lwip_setsockopt_impl_ipv6_checksum(s, sock, optval, optlen);
+          if (err) {
+            return err;
           }
-
-          LWIP_SOCKOPT_CHECK_OPTLEN_CONN_PCB_TYPE(sock, optlen, int, NETCONN_RAW);
-          if (*(const int *)optval < 0) {
-            sock->conn->pcb.raw->chksum_reqd = 0;
-          } else if (*(const int *)optval & 1) {
-            /* Per RFC3542, odd offsets are not allowed */
-            done_socket(sock);
-            return EINVAL;
-          } else {
-            sock->conn->pcb.raw->chksum_reqd = 1;
-            sock->conn->pcb.raw->chksum_offset = (u16_t) * (const int *)optval;
-          }
-          LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_RAW, IPV6_CHECKSUM, ..) -> %d\n",
-                                      s, sock->conn->pcb.raw->chksum_reqd));
           break;
 #endif /* LWIP_IPV6 && LWIP_RAW */
         default:

src/api/tcpip.c

@@ -68,11 +68,20 @@ sys_mutex_t lock_tcpip_core;
 static void tcpip_thread_handle_msg(struct tcpip_msg *msg);
 
 #if !LWIP_TIMERS
-/* wait for a message with timers disabled (e.g. pass a timer-check trigger into tcpip_thread) */
-#define TCPIP_MBOX_FETCH(mbox, msg) sys_mbox_fetch(mbox, msg)
+
+/** Wait for a message with timers disabled (e.g. pass a timer-check trigger into tcpip_thread) */
+static void
+tcpip_mbox_fetch(sys_mbox_t* mbox, void** msg)
+{
+  LWIP_ASSERT_CORE_LOCKED();
+
+  UNLOCK_TCPIP_CORE();
+  sys_mbox_fetch(mbox, msg);
+  LOCK_TCPIP_CORE();
+}
+
 #else /* !LWIP_TIMERS */
-/* wait for a message, timeouts are processed while waiting */
-#define TCPIP_MBOX_FETCH(mbox, msg) tcpip_timeouts_mbox_fetch(mbox, msg)
+
 /**
  * Wait (forever) for a message to arrive in an mbox.
  * While waiting, timeouts are processed.
@@ -81,7 +90,7 @@ static void tcpip_thread_handle_msg(struct tcpip_msg *msg);
  * @param msg the place to store the message
  */
 static void
-tcpip_timeouts_mbox_fetch(sys_mbox_t *mbox, void **msg)
+tcpip_mbox_fetch(sys_mbox_t *mbox, void **msg)
 {
   u32_t sleeptime, res;
 
@@ -139,7 +148,7 @@ tcpip_thread(void *arg)
   while (1) {                          /* MAIN Loop */
     LWIP_TCPIP_THREAD_ALIVE();
     /* wait for a message, timeouts are processed while waiting */
-    TCPIP_MBOX_FETCH(&tcpip_mbox, (void **)&msg);
+    tcpip_mbox_fetch(&tcpip_mbox, (void **)&msg);
     if (msg == NULL) {
       LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: invalid message: NULL\n"));
       LWIP_ASSERT("tcpip_thread: invalid message", 0);
@@ -428,7 +437,7 @@ tcpip_untimeout(sys_timeout_handler h, void *arg)
 
 /**
  * Sends a message to TCPIP thread to call a function. Caller thread blocks on
- * on a provided semaphore, which ist NOT automatically signalled by TCPIP thread,
+ * on a provided semaphore, which is NOT automatically signalled by TCPIP thread,
  * this has to be done by the user.
  * It is recommended to use LWIP_TCPIP_CORE_LOCKING since this is the way
  * with least runtime overhead.

src/apps/altcp_tls/altcp_tls_mbedtls.c

@@ -48,7 +48,7 @@
  *   GOOD custom entropy
  *
  * Missing things / @todo:
- * - some unhandled/untested things migh be caught by LWIP_ASSERTs...
+ * - some unhandled/untested things might be caught by LWIP_ASSERTs...
  */
 
 #include "lwip/opt.h"
@@ -133,6 +133,15 @@ static err_t altcp_mbedtls_handle_rx_appldata(struct altcp_pcb *conn, altcp_mbed
 static int altcp_mbedtls_bio_send(void *ctx, const unsigned char *dataptr, size_t size);
 
 
+static void
+altcp_mbedtls_flush_output(altcp_mbedtls_state_t* state)
+{
+  int flushed = mbedtls_ssl_flush_output(&state->ssl_context);
+  if (flushed) {
+    LWIP_DEBUGF(ALTCP_MBEDTLS_DEBUG, ("mbedtls_ssl_flush_output failed: %d\n", flushed));
+  }
+}
+
 /* callback functions from inner/lower connection: */
 
 /** Accept callback from lower connection (i.e. TCP)
@@ -531,7 +540,7 @@ altcp_mbedtls_lower_sent(void *arg, struct altcp_pcb *inner_conn, u16_t len)
     /* remove ACKed bytes from overhead adjust counter */
     state->overhead_bytes_adjust -= len;
     /* try to send more if we failed before (may increase overhead adjust counter) */
-    mbedtls_ssl_flush_output(&state->ssl_context);
+    altcp_mbedtls_flush_output(state);
     /* remove calculated overhead from ACKed bytes len */
     app_len = len - (u16_t)overhead;
     /* update application write counter and inform application */
@@ -559,7 +568,7 @@ altcp_mbedtls_lower_poll(void *arg, struct altcp_pcb *inner_conn)
     if (conn->state) {
       altcp_mbedtls_state_t *state = (altcp_mbedtls_state_t *)conn->state;
       /* try to send more if we failed before */
-      mbedtls_ssl_flush_output(&state->ssl_context);
+      altcp_mbedtls_flush_output(state);
       if (altcp_mbedtls_handle_rx_appldata(conn, state) == ERR_ABRT) {
         return ERR_ABRT;
       }
@@ -1233,7 +1242,7 @@ altcp_mbedtls_write(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t
      allow sending more if this succeeded (this is a hack because neither
      returning 0 nor MBEDTLS_ERR_SSL_WANT_WRITE worked for me) */
   if (state->ssl_context.out_left) {
-    mbedtls_ssl_flush_output(&state->ssl_context);
+    altcp_mbedtls_flush_output(state);
     if (state->ssl_context.out_left) {
       return ERR_MEM;
     }

src/apps/http/altcp_proxyconnect.c

@@ -576,6 +576,10 @@ const struct altcp_functions altcp_proxyconnect_functions = {
   altcp_default_get_tcp_addrinfo,
   altcp_default_get_ip,
   altcp_default_get_port
+#if LWIP_TCP_KEEPALIVE
+  , altcp_default_keepalive_disable
+  , altcp_default_keepalive_enable
+#endif
 #ifdef LWIP_DEBUG
   , altcp_default_dbg_get_tcp_state
 #endif

src/apps/http/http_client.c

@@ -229,12 +229,15 @@ http_parse_response_status(struct pbuf *p, u16_t *http_version, u16_t *http_stat
         } else {
           status_num_len = end1 - space1 - 1;
         }
-        memset(status_num, 0, sizeof(status_num));
-        if (pbuf_copy_partial(p, status_num, (u16_t)status_num_len, space1 + 1) == status_num_len) {
-          int status = atoi(status_num);
-          if ((status > 0) && (status <= 0xFFFF)) {
-            *http_status = (u16_t)status;
-            return ERR_OK;
+        if (status_num_len < sizeof(status_num)) {
+          if (pbuf_copy_partial(p, status_num, (u16_t)status_num_len, space1 + 1) == status_num_len) {
+            int status;
+            status_num[status_num_len] = 0;
+            status = atoi(status_num);
+            if ((status > 0) && (status <= 0xFFFF)) {
+              *http_status = (u16_t)status;
+              return ERR_OK;
+            }
           }
         }
       }
@@ -261,11 +264,14 @@ http_wait_headers(struct pbuf *p, u32_t *content_length, u16_t *total_header_len
       if (content_len_line_end != 0xFFFF) {
         char content_len_num[16];
         u16_t content_len_num_len = (u16_t)(content_len_line_end - content_len_hdr - 16);
-        memset(content_len_num, 0, sizeof(content_len_num));
-        if (pbuf_copy_partial(p, content_len_num, content_len_num_len, content_len_hdr + 16) == content_len_num_len) {
-          int len = atoi(content_len_num);
-          if ((len >= 0) && ((u32_t)len < HTTPC_CONTENT_LEN_INVALID)) {
-            *content_length = (u32_t)len;
+        if (content_len_num_len < sizeof(content_len_num)) {
+          if (pbuf_copy_partial(p, content_len_num, content_len_num_len, content_len_hdr + 16) == content_len_num_len) {
+            int len;
+            content_len_num[content_len_num_len] = 0;
+            len = atoi(content_len_num);
+            if ((len >= 0) && ((u32_t)len < HTTPC_CONTENT_LEN_INVALID)) {
+              *content_length = (u32_t)len;
+            }
           }
         }
       }
@@ -489,7 +495,7 @@ static int
 httpc_create_request_string(const httpc_connection_t *settings, const char* server_name, int server_port, const char* uri,
                             int use_host, char *buffer, size_t buffer_size)
 {
-  if (settings->use_proxy) {
+  if (settings && settings->use_proxy) {
     LWIP_ASSERT("server_name != NULL", server_name != NULL);
     if (server_port != HTTP_DEFAULT_PORT) {
       return snprintf(buffer, buffer_size, HTTPC_REQ_11_PROXY_PORT_FORMAT(server_name, server_port, uri, server_name));
@@ -517,6 +523,7 @@ httpc_init_connection_common(httpc_state_t **connection, const httpc_connection_
   size_t server_name_len, uri_len;
 #endif
 
+  LWIP_ERROR("httpc connection settings not give", settings != NULL, return ERR_ARG;);
   LWIP_ASSERT("uri != NULL", uri != NULL);
 
   /* get request len */
@@ -561,12 +568,12 @@ httpc_init_connection_common(httpc_state_t **connection, const httpc_connection_
   req->uri = req->server_name + server_name_len + 1;
   memcpy(req->uri, uri, uri_len + 1);
 #endif
-  req->pcb = altcp_new(settings->altcp_allocator);
+  req->pcb = altcp_new(settings ? settings->altcp_allocator : NULL);
   if(req->pcb == NULL) {
     httpc_free_state(req);
     return ERR_MEM;
   }
-  req->remote_port = settings->use_proxy ? settings->proxy_port : server_port;
+  req->remote_port = (settings && settings->use_proxy) ? settings->proxy_port : server_port;
   altcp_arg(req->pcb, req);
   altcp_recv(req->pcb, httpc_tcp_recv);
   altcp_err(req->pcb, httpc_tcp_err);
@@ -626,7 +633,7 @@ httpc_init_connection_addr(httpc_state_t **connection, const httpc_connection_t
  * @param settings connection settings (callbacks, proxy, etc.)
  * @param recv_fn the http body (not the headers) are passed to this callback
  * @param callback_arg argument passed to all the callbacks
- * @param connection retreives the connection handle (to match in callbacks)
+ * @param connection retrieves the connection handle (to match in callbacks)
  * @return ERR_OK if starting the request succeeds (callback_fn will be called later)
  *         or an error code
  */
@@ -671,7 +678,7 @@ httpc_get_file(const ip_addr_t* server_addr, u16_t port, const char* uri, const
  * @param settings connection settings (callbacks, proxy, etc.)
  * @param recv_fn the http body (not the headers) are passed to this callback
  * @param callback_arg argument passed to all the callbacks
- * @param connection retreives the connection handle (to match in callbacks)
+ * @param connection retrieves the connection handle (to match in callbacks)
  * @return ERR_OK if starting the request succeeds (callback_fn will be called later)
  *         or an error code
  */
@@ -689,12 +696,12 @@ httpc_get_file_dns(const char* server_name, u16_t port, const char* uri, const h
     return err;
   }
 
-  if (settings->use_proxy) {
+  if (settings && settings->use_proxy) {
     err = httpc_get_internal_addr(req, &settings->proxy_addr);
   } else {
     err = httpc_get_internal_dns(req, server_name);
   }
-  if(err != ERR_OK) {
+  if (err != ERR_OK) {
     httpc_free_state(req);
     return err;
   }
@@ -727,12 +734,17 @@ httpc_fs_init(httpc_filestate_t **filestate_out, const char* local_file_name,
 {
   httpc_filestate_t *filestate;
   size_t file_len, alloc_len;
+  mem_size_t alloc_mem_size;
   FILE *f;
 
   file_len = strlen(local_file_name);
   alloc_len = sizeof(httpc_filestate_t) + file_len + 1;
-
-  filestate = (httpc_filestate_t *)mem_malloc((mem_size_t)alloc_len);
+  alloc_mem_size = (mem_size_t)alloc_len;
+  if (alloc_mem_size < alloc_len) {
+    /* overflow */
+    return ERR_MEM;
+  }
+  filestate = (httpc_filestate_t *)mem_malloc(alloc_mem_size);
   if (filestate == NULL) {
     return ERR_MEM;
   }
@@ -812,7 +824,7 @@ httpc_fs_tcp_recv(void *arg, struct altcp_pcb *pcb, struct pbuf *p, err_t err)
  * @param uri uri to get from the server, remember leading "/"!
  * @param settings connection settings (callbacks, proxy, etc.)
  * @param callback_arg argument passed to all the callbacks
- * @param connection retreives the connection handle (to match in callbacks)
+ * @param connection retrieves the connection handle (to match in callbacks)
  * @return ERR_OK if starting the request succeeds (callback_fn will be called later)
  *         or an error code
  */
@@ -864,7 +876,7 @@ httpc_get_file_to_disk(const ip_addr_t* server_addr, u16_t port, const char* uri
  * @param uri uri to get from the server, remember leading "/"!
  * @param settings connection settings (callbacks, proxy, etc.)
  * @param callback_arg argument passed to all the callbacks
- * @param connection retreives the connection handle (to match in callbacks)
+ * @param connection retrieves the connection handle (to match in callbacks)
  * @return ERR_OK if starting the request succeeds (callback_fn will be called later)
  *         or an error code
  */

src/apps/http/httpd.c

@@ -120,7 +120,6 @@
 #define CRLF "\r\n"
 #if LWIP_HTTPD_SUPPORT_11_KEEPALIVE
 #define HTTP11_CONNECTIONKEEPALIVE  "Connection: keep-alive"
-#define HTTP11_CONNECTIONKEEPALIVE2 "Connection: Keep-Alive"
 #endif
 
 #if LWIP_HTTPD_DYNAMIC_FILE_READ
@@ -471,6 +470,32 @@ http_state_alloc(void)
   return ret;
 }
 
+/** Make sure the post code knows that the connection is closed */
+static void
+http_state_close_post(struct http_state* hs)
+{
+#if LWIP_HTTPD_SUPPORT_POST
+  if (hs != NULL) {
+    if ((hs->post_content_len_left != 0)
+#if LWIP_HTTPD_POST_MANUAL_WND
+      || ((hs->no_auto_wnd != 0) && (hs->unrecved_bytes != 0))
+#endif /* LWIP_HTTPD_POST_MANUAL_WND */
+      ) {
+      /* prevent calling httpd_post_finished twice */
+      hs->post_content_len_left = 0;
+#if LWIP_HTTPD_POST_MANUAL_WND
+      hs->unrecved_bytes = 0;
+#endif /* LWIP_HTTPD_POST_MANUAL_WND */
+      /* make sure the post code knows that the connection is closed */
+      http_uri_buf[0] = 0;
+      httpd_post_finished(hs, http_uri_buf, LWIP_HTTPD_URI_BUF_LEN);
+    }
+  }
+#else /* LWIP_HTTPD_SUPPORT_POST*/
+  LWIP_UNUSED_ARG(hs);
+#endif /* LWIP_HTTPD_SUPPORT_POST*/
+}
+
 /** Free a struct http_state.
  * Also frees the file data if dynamic.
  */
@@ -505,6 +530,7 @@ http_state_eof(struct http_state *hs)
     hs->req = NULL;
   }
 #endif /* LWIP_HTTPD_SUPPORT_REQUESTLIST */
+  http_state_close_post(hs);
 }
 
 /** Free a struct http_state.
@@ -598,20 +624,7 @@ http_close_or_abort_conn(struct altcp_pcb *pcb, struct http_state *hs, u8_t abor
   err_t err;
   LWIP_DEBUGF(HTTPD_DEBUG, ("Closing connection %p\n", (void *)pcb));
 
-#if LWIP_HTTPD_SUPPORT_POST
-  if (hs != NULL) {
-    if ((hs->post_content_len_left != 0)
-#if LWIP_HTTPD_POST_MANUAL_WND
-        || ((hs->no_auto_wnd != 0) && (hs->unrecved_bytes != 0))
-#endif /* LWIP_HTTPD_POST_MANUAL_WND */
-       ) {
-      /* make sure the post code knows that the connection is closed */
-      http_uri_buf[0] = 0;
-      httpd_post_finished(hs, http_uri_buf, LWIP_HTTPD_URI_BUF_LEN);
-    }
-  }
-#endif /* LWIP_HTTPD_SUPPORT_POST*/
-
+  http_state_close_post(hs);
 
   altcp_arg(pcb, NULL);
   altcp_recv(pcb, NULL);
@@ -1818,7 +1831,7 @@ http_post_request(struct pbuf *inp, struct http_state *hs,
 #define HTTP_HDR_CONTENT_LEN                "Content-Length: "
 #define HTTP_HDR_CONTENT_LEN_LEN            16
 #define HTTP_HDR_CONTENT_LEN_DIGIT_MAX_LEN  10
-    char *scontent_len = lwip_strnstr(uri_end + 1, HTTP_HDR_CONTENT_LEN, crlfcrlf - (uri_end + 1));
+    char *scontent_len = lwip_strnistr(uri_end + 1, HTTP_HDR_CONTENT_LEN, crlfcrlf - (uri_end + 1));
     if (scontent_len != NULL) {
       char *scontent_len_end = lwip_strnstr(scontent_len + HTTP_HDR_CONTENT_LEN_LEN, CRLF, HTTP_HDR_CONTENT_LEN_DIGIT_MAX_LEN);
       if (scontent_len_end != NULL) {
@@ -2086,8 +2099,7 @@ http_parse_request(struct pbuf *inp, struct http_state *hs, struct altcp_pcb *pc
 #if LWIP_HTTPD_SUPPORT_11_KEEPALIVE
           /* This is HTTP/1.0 compatible: for strict 1.1, a connection
              would always be persistent unless "close" was specified. */
-          if (!is_09 && (lwip_strnstr(data, HTTP11_CONNECTIONKEEPALIVE, data_len) ||
-                         lwip_strnstr(data, HTTP11_CONNECTIONKEEPALIVE2, data_len))) {
+          if (!is_09 && lwip_strnistr(data, HTTP11_CONNECTIONKEEPALIVE, data_len)) {
             hs->keepalive = 1;
           } else {
             hs->keepalive = 0;
@@ -2401,7 +2413,7 @@ http_init_file(struct http_state *hs, struct fs_file *file, int is_09, const cha
          search for the end of the header. */
       char *file_start = lwip_strnstr(hs->file, CRLF CRLF, hs->left);
       if (file_start != NULL) {
-        int diff = file_start + 4 - hs->file;
+        size_t diff = file_start + 4 - hs->file;
         hs->file += diff;
         hs->left -= (u32_t)diff;
       }

src/apps/http/makefsdata/makefsdata

@@ -21,7 +21,7 @@ while($file = <FILES>) {
 	print(HEADER "HTTP/1.0 200 OK\r\n");
     }
     print(HEADER "Server: lwIP/pre-0.6 (http://www.sics.se/~adam/lwip/)\r\n");
-    if($file =~ /\.html$/) {
+    if($file =~ /\.s?html?$/) {
 	print(HEADER "Content-type: text/html\r\n");
     } elsif($file =~ /\.gif$/) {
 	print(HEADER "Content-type: image/gif\r\n");

src/apps/http/makefsdata/makefsdata.c

@@ -77,7 +77,7 @@ static int deflate_level; /* default compression level, can be changed via comma
 #define CHDIR(path)                   SetCurrentDirectoryA(path)
 #define CHDIR_SUCCEEDED(ret)          (ret == TRUE)
 
-#elif __linux__
+#elif __linux__ || __APPLE__
 
 #define GETCWD(path, len)             getcwd(path, len)
 #define GETCWD_SUCCEEDED(ret)         (ret != NULL)
@@ -895,6 +895,10 @@ static int is_ssi_file(const char *filename)
       /* build up the relative path to this file */
       size_t sublen = strlen(curSubdir);
       size_t freelen = sizeof(curSubdir) - sublen - 1;
+      if (sublen + strlen(filename) + 1 >= sizeof(curSubdir)) {
+        /* prevent buffer overflow */
+        return 0;
+      }
       strncat(curSubdir, "/", freelen);
       strncat(curSubdir, filename, freelen - 1);
       curSubdir[sizeof(curSubdir) - 1] = 0;

src/apps/http/makefsdata/tinydir.h

@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2013-2019, tinydir authors:
+Copyright (c) 2013-2021, tinydir authors:
 - Cong Xu
 - Lautis Sun
 - Baudouin Feildel
@@ -125,8 +125,13 @@ extern "C" {
 # define _TINYDIR_FUNC static __inline
 #elif !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L
 # define _TINYDIR_FUNC static __inline__
-#else
+#elif defined(__cplusplus)
 # define _TINYDIR_FUNC static inline
+#elif defined(__GNUC__)
+/* Suppress unused function warning */
+# define _TINYDIR_FUNC __attribute__((unused)) static
+#else
+# define _TINYDIR_FUNC static
 #endif
 
 /* readdir_r usage; define TINYDIR_USE_READDIR_R to use it (if supported) */
@@ -543,7 +548,9 @@ int tinydir_readfile(const tinydir_dir *dir, tinydir_file *file)
 	if (_tstat(
 #elif (defined _BSD_SOURCE) || (defined _DEFAULT_SOURCE)	\
 	|| ((defined _XOPEN_SOURCE) && (_XOPEN_SOURCE >= 500))	\
-	|| ((defined _POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200112L))
+	|| ((defined _POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200112L)) \
+	|| ((defined __APPLE__) && (defined __MACH__)) \
+	|| (defined BSD)
 	if (lstat(
 #else
 	if (stat(
@@ -636,7 +643,7 @@ int tinydir_file_open(tinydir_file *file, const _tinydir_char_t *path)
 	int result = 0;
 	int found = 0;
 	_tinydir_char_t dir_name_buf[_TINYDIR_PATH_MAX];
-	_tinydir_char_t file_name_buf[_TINYDIR_FILENAME_MAX];
+	_tinydir_char_t file_name_buf[_TINYDIR_PATH_MAX];
 	_tinydir_char_t *dir_name;
 	_tinydir_char_t *base_name;
 #if (defined _MSC_VER || defined __MINGW32__)

src/apps/lwiperf/lwiperf.c

@@ -302,7 +302,7 @@ lwiperf_tcp_client_send_more(lwiperf_state_tcp_t *conn)
       /* this session is byte-limited */
       u32_t amount_bytes = lwip_htonl(conn->settings.amount);
       /* @todo: this can send up to 1*MSS more than requested... */
-      if (amount_bytes >= conn->bytes_transferred) {
+      if (conn->bytes_transferred >= amount_bytes) {
         /* all requested bytes transferred -> close the connection */
         lwiperf_tcp_close(conn, LWIPERF_TCP_DONE_CLIENT);
         return ERR_OK;

src/apps/mdns/mdns.c

@@ -1792,7 +1792,7 @@ mdns_probe_conflict(struct netif *netif, s8_t slot)
 }
 
 /**
- * Loockup matching request for response MDNS packet
+ * Lookup matching request for response MDNS packet
  */
 #if LWIP_MDNS_SEARCH
 static struct mdns_request *

src/apps/mqtt/mqtt.c

@@ -318,7 +318,7 @@ mqtt_append_request(struct mqtt_request_t **tail, struct mqtt_request_t *r)
 
   LWIP_ASSERT("mqtt_append_request: tail != NULL", tail != NULL);
 
-  /* Iterate trough queue to find head, and count total timeout time */
+  /* Iterate through queue to find head, and count total timeout time */
   for (iter = *tail; iter != NULL; iter = iter->next) {
     time_before += iter->timeout_diff;
     head = iter;
@@ -1337,9 +1337,16 @@ mqtt_client_connect(mqtt_client_t *client, const ip_addr_t *ip_addr, u16_t port,
     LWIP_ERROR("mqtt_client_connect: client_info->will_topic length overflow", len <= 0xFF, return ERR_VAL);
     LWIP_ERROR("mqtt_client_connect: client_info->will_topic length must be > 0", len > 0, return ERR_VAL);
     will_topic_len = (u8_t)len;
-    len = strlen(client_info->will_msg);
-    LWIP_ERROR("mqtt_client_connect: client_info->will_msg length overflow", len <= 0xFF, return ERR_VAL);
-    will_msg_len = (u8_t)len;
+    if (client_info->will_msg_len == 0)
+    {
+        len = strlen(client_info->will_msg);
+        LWIP_ERROR("mqtt_client_connect: client_info->will_msg length overflow", len <= 0xFF, return ERR_VAL);
+        will_msg_len = (u8_t)len;
+    }
+    else
+    {
+        will_msg_len = client_info->will_msg_len;
+    }
     len = remaining_length + 2 + will_topic_len + 2 + will_msg_len;
     LWIP_ERROR("mqtt_client_connect: remaining_length overflow", len <= 0xFFFF, return ERR_VAL);
     remaining_length = (u16_t)len;

src/apps/netbiosns/netbiosns.c

@@ -391,7 +391,7 @@ netbiosns_recv(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t
               resp->resp_hdr.authorityRRs  = 0;
               resp->resp_hdr.additionalRRs = 0;
 
-              /* prepare NetBIOS header datas */
+              /* prepare NetBIOS header data */
               MEMCPY( resp->resp_name.encname, netbios_question_hdr->encname, sizeof(netbios_question_hdr->encname));
               resp->resp_name.nametype     = netbios_question_hdr->nametype;
               resp->resp_name.type         = netbios_question_hdr->type;

src/apps/smtp/smtp.c

@@ -1305,7 +1305,7 @@ smtp_process(void *arg, struct altcp_pcb *pcb, struct pbuf *p)
     LWIP_DEBUGF(SMTP_DEBUG_TRACE, ("smtp_process: received response code: %d\n", response_code));
     if (smtp_is_response_finished(s) != ERR_OK) {
       LWIP_DEBUGF(SMTP_DEBUG_TRACE, ("smtp_process: partly received response code: %d\n", response_code));
-      /* wait for next packet to complete the respone */
+      /* wait for next packet to complete the response */
       return;
     }
   } else {

src/apps/snmp/snmp_asn1.c

@@ -463,14 +463,8 @@ snmp_asn1_dec_s32t(struct snmp_pbuf_stream *pbuf_stream, u16_t len, s32_t *value
   if ((len > 0) && (len < 5)) {
     PBUF_OP_EXEC(snmp_pbuf_stream_read(pbuf_stream, &data));
 
-    if (data & 0x80) {
-      /* negative, start from -1 */
-      *value = -1;
-      *value = (*value << 8) | data;
-    } else {
-      /* positive, start from 0 */
-      *value = data;
-    }
+    /* sign extension */
+    *value = (s8_t)data;
     len--;
     /* shift in the remaining value */
     while (len > 0) {

src/apps/snmp/snmp_core.c

@@ -584,7 +584,7 @@ snmp_oid_prefix(struct snmp_obj_id *target, const u32_t *oid, u8_t oid_len)
 
 /**
  * Combine two OIDs into struct snmp_obj_id
- * @param target Assignmet target
+ * @param target Assignment target
  * @param oid1 OID 1
  * @param oid1_len OID 1 length
  * @param oid2 OID 2

src/apps/snmp/snmp_msg.c

@@ -328,7 +328,6 @@ snmp_receive(void *handle, struct pbuf *p, const ip_addr_t *source_ip, u16_t por
         struct snmp_varbind vb;
 
         vb.next = NULL;
-        vb.prev = NULL;
         vb.type = SNMP_ASN1_TYPE_COUNTER32;
         vb.value_len = sizeof(u32_t);
 
@@ -1058,7 +1057,7 @@ snmp_parse_inbound_frame(struct snmp_request *request)
       IF_PARSE_EXEC(snmpv3_get_user((char *)request->msg_user_name, &auth, key, NULL, NULL));
       IF_PARSE_EXEC(snmpv3_auth(&auth_stream, request->inbound_pbuf->tot_len, key, auth, hmac));
 
-      if (memcmp(request->msg_authentication_parameters, hmac, SNMP_V3_MAX_AUTH_PARAM_LENGTH)) {
+      if (lwip_memcmp_consttime(request->msg_authentication_parameters, hmac, SNMP_V3_MAX_AUTH_PARAM_LENGTH)) {
         snmp_stats.wrongdigests++;
         request->msg_flags = SNMP_V3_NOAUTHNOPRIV;
         request->error_status = SNMP_ERR_AUTHORIZATIONERROR;

src/apps/snmp/snmp_traps.c

@@ -137,7 +137,6 @@ static s32_t req_id = 1;
  * @param dst_idx index in 0 .. SNMP_TRAP_DESTINATIONS-1
  * @param enable switch if 0 destination is disabled >0 enabled.
  *
- * @retval void
  */
 void
 snmp_trap_dst_enable(u8_t dst_idx, u8_t enable)
@@ -154,7 +153,6 @@ snmp_trap_dst_enable(u8_t dst_idx, u8_t enable)
  * @param dst_idx index in 0 .. SNMP_TRAP_DESTINATIONS-1
  * @param dst IPv4 address in host order.
  *
- * @retval void
  */
 void
 snmp_trap_dst_ip_set(u8_t dst_idx, const ip_addr_t *dst)
@@ -171,7 +169,6 @@ snmp_trap_dst_ip_set(u8_t dst_idx, const ip_addr_t *dst)
  *
  * @param enable enable SNMP traps
  *
- * @retval void
  */
 void
 snmp_set_auth_traps_enabled(u8_t enable)
@@ -200,7 +197,6 @@ snmp_get_auth_traps_enabled(void)
  *
  * @param snmp_version version that will be used for sending traps
  *
- * @retval void
  */
 void
 snmp_set_default_trap_version(u8_t snmp_version)
@@ -274,7 +270,6 @@ snmp_prepare_trap_oid(struct snmp_obj_id *dest_snmp_trap_oid, const struct snmp_
  * @param generic_trap SNMP v1 generic trap
  * @param specific_trap SNMP v1 specific trap
  * @param varbinds list of varbinds
- * @retval void
  */
 static void
 snmp_prepare_necessary_msg_fields(struct snmp_msg_trap *trap_msg, const struct snmp_obj_id *eoid, s32_t generic_trap, s32_t specific_trap, struct snmp_varbind *varbinds)
@@ -351,13 +346,11 @@ snmp_send_trap_or_notification_or_inform_generic(struct snmp_msg_trap *trap_msg,
   u16_t tot_len = 0;
   err_t err = ERR_OK;
   u32_t timestamp = 0;
-  struct snmp_varbind *original_varbinds = varbinds;
-  struct snmp_varbind *original_prev = NULL;
+  struct snmp_obj_id snmp_trap_oid = { 0 };  /* used for converting SNMPv1 generic/specific trap parameter to SNMPv2 snmpTrapOID */
   struct snmp_varbind snmp_v2_special_varbinds[] = {
                                                      /* First varbind is used to store sysUpTime */
                                                      {
                                                        NULL,                            /* *next */
-                                                       NULL,                            /* *prev */
                                                        {                                /* oid */
                                                          8,                             /* oid len */
                                                          {1, 3, 6, 1, 2, 1, 1, 3}       /* oid for sysUpTime */
@@ -369,7 +362,6 @@ snmp_send_trap_or_notification_or_inform_generic(struct snmp_msg_trap *trap_msg,
                                                      /* Second varbind is used to store snmpTrapOID */
                                                      {
                                                        NULL,                            /* *next */
-                                                       NULL,                            /* *prev */
                                                        {                                /* oid */
                                                          10,                            /* oid len */
                                                          {1, 3, 6, 1, 6, 3, 1, 1, 4, 1} /* oid for snmpTrapOID */
@@ -383,7 +375,6 @@ snmp_send_trap_or_notification_or_inform_generic(struct snmp_msg_trap *trap_msg,
   LWIP_ASSERT_SNMP_LOCKED();
 
   snmp_v2_special_varbinds[0].next = &snmp_v2_special_varbinds[1];
-  snmp_v2_special_varbinds[1].prev = &snmp_v2_special_varbinds[0];
 
   snmp_v2_special_varbinds[0].value = &timestamp;
 
@@ -391,15 +382,10 @@ snmp_send_trap_or_notification_or_inform_generic(struct snmp_msg_trap *trap_msg,
 
   /* see rfc3584 */
   if (trap_msg->snmp_version == SNMP_VERSION_2c) {
-    struct snmp_obj_id snmp_trap_oid =  { 0 };  /* used for converting SNMPv1 generic/specific trap parameter to SNMPv2 snmpTrapOID */
     err = snmp_prepare_trap_oid(&snmp_trap_oid, eoid, generic_trap, specific_trap);
     if (err == ERR_OK) {
       snmp_v2_special_varbinds[1].value_len = snmp_trap_oid.len * sizeof(snmp_trap_oid.id[0]);
       snmp_v2_special_varbinds[1].value = snmp_trap_oid.id;
-      if (varbinds != NULL) {
-        original_prev = varbinds->prev;
-        varbinds->prev = &snmp_v2_special_varbinds[1];
-      }
       varbinds = snmp_v2_special_varbinds;  /* After inserting two varbinds at the beginning of the list, make sure that pointer is pointing to the first element  */
     }
   }
@@ -422,9 +408,6 @@ snmp_send_trap_or_notification_or_inform_generic(struct snmp_msg_trap *trap_msg,
       }
     }
   }
-  if ((trap_msg->snmp_version == SNMP_VERSION_2c) && (original_varbinds != NULL)) {
-    original_varbinds->prev = original_prev;
-  }
   req_id++;
   return err;
 }
@@ -498,7 +481,6 @@ snmp_send_trap_specific(s32_t specific_trap, struct snmp_varbind *varbinds)
 /**
  * @ingroup snmp_traps
  * Send coldstart trap
- * @retval void
  */
 void
 snmp_coldstart_trap(void)
@@ -509,7 +491,6 @@ snmp_coldstart_trap(void)
 /**
  * @ingroup snmp_traps
  * Send authentication failure trap (used internally by agent)
- * @retval void
  */
 void
 snmp_authfail_trap(void)
@@ -727,7 +708,6 @@ snmp_trap_header_enc_pdu(struct snmp_msg_trap *trap, struct snmp_pbuf_stream *pb
  * Encodes trap header part that is SNMP v1 header specific.
  * @param trap Trap message
  * @param pbuf_stream stream used for storing data inside pbuf
- * @retval void
  */
 static err_t
 snmp_trap_header_enc_v1_specific(struct snmp_msg_trap *trap, struct snmp_pbuf_stream *pbuf_stream)
@@ -781,7 +761,6 @@ snmp_trap_header_enc_v1_specific(struct snmp_msg_trap *trap, struct snmp_pbuf_st
  *
  * @param trap Trap message
  * @param pbuf_stream stream used for storing data inside pbuf
- * @retval void
  */
 static err_t
 snmp_trap_header_enc_v2c_specific(struct snmp_msg_trap *trap, struct snmp_pbuf_stream *pbuf_stream)
@@ -814,7 +793,6 @@ snmp_trap_header_enc_v2c_specific(struct snmp_msg_trap *trap, struct snmp_pbuf_s
  *
  * @param trap Trap message
  * @param pbuf_stream stream used for storing data inside pbuf
- * @retval void
  */
 static err_t
 snmp_trap_header_enc(struct snmp_msg_trap *trap, struct snmp_pbuf_stream *pbuf_stream)

src/apps/sntp/sntp.c

@@ -914,7 +914,8 @@ sntp_getkodreceived(u8_t idx)
  * Initialize one of the NTP servers by name
  *
  * @param idx the index of the NTP server to set must be < SNTP_MAX_SERVERS
- * @param server DNS name of the NTP server to set, to be resolved at contact time
+ * @param server DNS name of the NTP server to set, to be resolved at contact
+ *        time.  Note sntp stores the pointer, it doesn't copy the string.
  */
 void
 sntp_setservername(u8_t idx, const char *server)

src/apps/tftp/tftp.c

@@ -157,7 +157,7 @@ send_request(const ip_addr_t *addr, u16_t port, u16_t opcode, const char* fname,
 static err_t
 send_error(const ip_addr_t *addr, u16_t port, enum tftp_error code, const char *str)
 {
-  int str_length = strlen(str);
+  size_t str_length = strlen(str);
   struct pbuf *p;
   u16_t *payload;
   err_t ret;
@@ -454,10 +454,12 @@ tftp_init_common(u8_t mode, const struct tftp_context *ctx)
     return ERR_MEM;
   }
 
-  ret = udp_bind(pcb, IP_ANY_TYPE, TFTP_PORT);
-  if (ret != ERR_OK) {
-    udp_remove(pcb);
-    return ret;
+  if (mode & LWIP_TFTP_MODE_SERVER) {
+    ret = udp_bind(pcb, IP_ANY_TYPE, TFTP_PORT);
+    if (ret != ERR_OK) {
+      udp_remove(pcb);
+      return ret;
+    }
   }
 
   tftp_state.handle    = NULL;

src/core/def.c

@@ -261,3 +261,26 @@ lwip_itoa(char *result, size_t bufsize, int number)
   memmove(res, tmp, (size_t)((result + bufsize) - tmp));
 }
 #endif
+
+#ifndef lwip_memcmp_consttime
+/**
+ * @ingroup sys_nonstandard
+ * The goal of this function is to compare memory with constant runtime in order to prevent
+ * timing attacks to various parts in the stack.
+ * To do that, in contrast to memcmp(), it only returns:
+ * 0: equal
+ * != 0: not equal
+ */
+int lwip_memcmp_consttime(const void* s1, const void* s2, size_t len)
+{
+  size_t i;
+  const unsigned char* a1 = (const unsigned char*)s1;
+  const unsigned char* a2 = (const unsigned char*)s2;
+  unsigned char ret = 0;
+
+  for (i = 0; i < len; i++) {
+    ret |= a1[i] ^ a2[i];
+  }
+  return ret;
+}
+#endif

src/core/init.c

@@ -196,8 +196,11 @@ PACK_STRUCT_END
 #if (LWIP_ALTCP && LWIP_EVENT_API)
 #error "The application layered tcp API does not work with LWIP_EVENT_API"
 #endif
-#if (MEM_LIBC_MALLOC && MEM_USE_POOLS)
-#error "MEM_LIBC_MALLOC and MEM_USE_POOLS may not both be simultaneously enabled in your lwipopts.h"
+#if (MEM_CUSTOM_ALLOCATOR && !(defined(MEM_CUSTOM_FREE) && defined(MEM_CUSTOM_MALLOC) && defined(MEM_CUSTOM_CALLOC)))
+#error "All of MEM_CUSTOM_FREE/MEM_CUSTOM_MALLOC/MEM_CUSTOM_CALLOC must be provided if MEM_CUSTOM_ALLOCATOR is enabled in your lwipopts.h"
+#endif
+#if (MEM_USE_POOLS && MEM_CUSTOM_ALLOCATOR)
+#error "MEM_USE_POOLS may not be used with a custom allocator (MEM_CUSTOM_ALLOCATOR or MEM_LIBC_MALLOC) enabled in your lwipopts.h"
 #endif
 #if (MEM_USE_POOLS && !MEMP_USE_CUSTOM_POOLS)
 #error "MEM_USE_POOLS requires custom pools (MEMP_USE_CUSTOM_POOLS) to be enabled in your lwipopts.h"

src/core/ipv4/acd.c

@@ -143,7 +143,7 @@ acd_add(struct netif *netif, struct acd *acd,
 
 /**
  * @ingroup acd
- * Remvoe ACD client from the client list
+ * Remove ACD client from the client list
  *
  * @param netif network interface from which to remove the acd client
  * @param acd   acd module to be removed from the list

src/core/ipv4/autoip.c

@@ -223,9 +223,10 @@ autoip_conflict_callback(struct netif *netif, acd_callback_enum_t state)
       autoip_restart(netif);
       break;
     case ACD_DECLINE:
-      /* "delete" conflicting address so a new one will be selected in
-       * autoip_start() */
+      /* "delete" conflicting address and increment tried addr so a new one
+       * will be selected in autoip_start() */
       ip4_addr_set_any(&autoip->llipaddr);
+      autoip->tried_llipaddr++;
       autoip_stop(netif);
       break;
       default:

src/core/ipv4/dhcp.c

@@ -773,9 +773,6 @@ dhcp_set_struct(struct netif *netif, struct dhcp *dhcp)
  * @ingroup dhcp4
  * Removes a struct dhcp from a netif.
  *
- * ATTENTION: Only use this when not using dhcp_set_struct() to allocate the
- *            struct dhcp since the memory is passed back to the heap.
- *
  * @param netif the netif from which to remove the struct dhcp
  */
 void dhcp_cleanup(struct netif *netif)
@@ -811,6 +808,7 @@ dhcp_start(struct netif *netif)
 {
   struct dhcp *dhcp;
   err_t result;
+  u8_t saved_flags;
 
   LWIP_ASSERT_CORE_LOCKED();
   LWIP_ERROR("netif != NULL", (netif != NULL), return ERR_ARG;);
@@ -833,6 +831,8 @@ dhcp_start(struct netif *netif)
       return ERR_MEM;
     }
 
+    /* clear the flags, the rest is cleared below */
+    dhcp->flags = 0;
     /* store this dhcp client in the netif */
     netif_set_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP, dhcp);
     LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_start(): allocated dhcp\n"));
@@ -846,9 +846,10 @@ dhcp_start(struct netif *netif)
     /* dhcp is cleared below, no need to reset flag*/
   }
 
-  /* clear data structure */
+  /* clear data structure but preserve DHCP_FLAG_EXTERNAL_MEM for dhcp_cleanup() */
+  saved_flags = dhcp->flags;
   memset(dhcp, 0, sizeof(struct dhcp));
-  /* dhcp_set_state(&dhcp, DHCP_STATE_OFF); */
+  dhcp->flags = saved_flags & DHCP_FLAG_EXTERNAL_MEM;
 
 
 #if LWIP_DHCP_DOES_ACD_CHECK
@@ -1600,7 +1601,7 @@ again:
         /* special case: there might be more than one server */
         LWIP_DHCP_INPUT_ERROR("len %% 4 == 0", len % 4 == 0, return ERR_VAL;);
         /* limit number of DNS servers */
-        decode_len = LWIP_MIN(len, 4 * DNS_MAX_SERVERS);
+        decode_len = LWIP_MIN(len, 4 * LWIP_DHCP_PROVIDE_DNS_SERVERS);
         LWIP_DHCP_INPUT_ERROR("len >= decode_len", len >= decode_len, return ERR_VAL;);
         decode_idx = DHCP_OPTION_IDX_DNS_SERVER;
         break;

src/core/ipv4/etharp.c

@@ -940,9 +940,9 @@ etharp_query(struct netif *netif, const ip4_addr_t *ipaddr, struct pbuf *q)
   netif_addr_idx_t i;
 
   /* non-unicast address? */
-  if (ip4_addr_isbroadcast(ipaddr, netif) ||
-      ip4_addr_ismulticast(ipaddr) ||
-      ip4_addr_isany(ipaddr)) {
+  if (ip4_addr_isany(ipaddr) ||
+      ip4_addr_isbroadcast(ipaddr, netif) ||
+      ip4_addr_ismulticast(ipaddr)) {
     LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE, ("etharp_query: will not add non-unicast IP address to ARP cache\n"));
     return ERR_ARG;
   }

src/core/ipv4/icmp.c

@@ -213,6 +213,7 @@ icmp_input(struct pbuf *p, struct netif *inp)
         ip4_addr_copy(iphdr->src, *src);
         ip4_addr_copy(iphdr->dest, *ip4_current_src_addr());
         ICMPH_TYPE_SET(iecho, ICMP_ER);
+        p->if_idx = NETIF_NO_INDEX; /* we're reusing this pbuf, so reset its if_idx */
 #if CHECKSUM_GEN_ICMP
         IF__NETIF_CHECKSUM_ENABLED(inp, NETIF_CHECKSUM_GEN_ICMP) {
           /* adjust the checksum */

src/core/ipv4/ip4_frag.c

@@ -175,19 +175,21 @@ ip_reass_free_complete_datagram(struct ip_reassdata *ipr, struct ip_reassdata *p
 
   MIB2_STATS_INC(mib2.ipreasmfails);
 #if LWIP_ICMP
-  iprh = (struct ip_reass_helper *)ipr->p->payload;
-  if (iprh->start == 0) {
-    /* The first fragment was received, send ICMP time exceeded. */
-    /* First, de-queue the first pbuf from r->p. */
-    p = ipr->p;
-    ipr->p = iprh->next_pbuf;
-    /* Then, copy the original header into it. */
-    SMEMCPY(p->payload, &ipr->iphdr, IP_HLEN);
-    icmp_time_exceeded(p, ICMP_TE_FRAG);
-    clen = pbuf_clen(p);
-    LWIP_ASSERT("pbufs_freed + clen <= 0xffff", pbufs_freed + clen <= 0xffff);
-    pbufs_freed = (u16_t)(pbufs_freed + clen);
-    pbuf_free(p);
+  if (ipr->p != NULL) {
+    iprh = (struct ip_reass_helper *)ipr->p->payload;
+    if (iprh->start == 0) {
+      /* The first fragment was received, send ICMP time exceeded. */
+      /* First, de-queue the first pbuf from r->p. */
+      p = ipr->p;
+      ipr->p = iprh->next_pbuf;
+      /* Then, copy the original header into it. */
+      SMEMCPY(p->payload, &ipr->iphdr, IP_HLEN);
+      icmp_time_exceeded(p, ICMP_TE_FRAG);
+      clen = pbuf_clen(p);
+      LWIP_ASSERT("pbufs_freed + clen <= 0xffff", pbufs_freed + clen <= 0xffff);
+      pbufs_freed = (u16_t)(pbufs_freed + clen);
+      pbuf_free(p);
+    }
   }
 #endif /* LWIP_ICMP */
 

src/core/ipv6/ip6.c

@@ -1011,9 +1011,10 @@ netif_found:
           goto ip6_input_cleanup;
         }
 
-        /* Returned p point to IPv6 header.
+        /* Returned p points to IPv6 header.
          * Update all our variables and pointers and continue. */
         ip6hdr = (struct ip6_hdr *)p->payload;
+        ip_data.current_ip6_header = ip6hdr;
         nexth = &IP6H_NEXTH(ip6hdr);
         hlen = hlen_tot = IP6_HLEN;
         pbuf_remove_header(p, IP6_HLEN);

src/core/ipv6/ip6_frag.c

@@ -154,35 +154,37 @@ ip6_reass_free_complete_datagram(struct ip6_reassdata *ipr)
   struct ip6_reass_helper *iprh;
 
 #if LWIP_ICMP6
-  iprh = (struct ip6_reass_helper *)ipr->p->payload;
-  if (iprh->start == 0) {
-    /* The first fragment was received, send ICMP time exceeded. */
-    /* First, de-queue the first pbuf from r->p. */
-    p = ipr->p;
-    ipr->p = iprh->next_pbuf;
-    /* Restore the part that we've overwritten with our helper structure, or we
-     * might send garbage (and disclose a pointer) in the ICMPv6 reply. */
-    MEMCPY(p->payload, ipr->orig_hdr, sizeof(iprh));
-    /* Then, move back to the original ipv6 header (we are now pointing to Fragment header).
-       This cannot fail since we already checked when receiving this fragment. */
-    if (pbuf_header_force(p, (s16_t)((u8_t*)p->payload - (u8_t*)ipr->iphdr))) {
-      LWIP_ASSERT("ip6_reass_free: moving p->payload to ip6 header failed", 0);
+  if (ipr->p != NULL) {
+    iprh = (struct ip6_reass_helper *)ipr->p->payload;
+    if (iprh->start == 0) {
+      /* The first fragment was received, send ICMP time exceeded. */
+      /* First, de-queue the first pbuf from r->p. */
+      p = ipr->p;
+      ipr->p = iprh->next_pbuf;
+      /* Restore the part that we've overwritten with our helper structure, or we
+       * might send garbage (and disclose a pointer) in the ICMPv6 reply. */
+      MEMCPY(p->payload, ipr->orig_hdr, sizeof(*iprh));
+      /* Then, move back to the original ipv6 header (we are now pointing to Fragment header).
+         This cannot fail since we already checked when receiving this fragment. */
+      if (pbuf_header_force(p, (s16_t)((u8_t*)p->payload - (u8_t*)ipr->iphdr))) {
+        LWIP_ASSERT("ip6_reass_free: moving p->payload to ip6 header failed", 0);
+      }
+      else {
+        /* Reconstruct the zoned source and destination addresses, so that we do
+         * not end up sending the ICMP response over the wrong link. */
+        ip6_addr_t src_addr, dest_addr;
+        ip6_addr_copy_from_packed(src_addr, IPV6_FRAG_SRC(ipr));
+        ip6_addr_set_zone(&src_addr, ipr->src_zone);
+        ip6_addr_copy_from_packed(dest_addr, IPV6_FRAG_DEST(ipr));
+        ip6_addr_set_zone(&dest_addr, ipr->dest_zone);
+        /* Send the actual ICMP response. */
+        icmp6_time_exceeded_with_addrs(p, ICMP6_TE_FRAG, &src_addr, &dest_addr);
+      }
+      clen = pbuf_clen(p);
+      LWIP_ASSERT("pbufs_freed + clen <= 0xffff", pbufs_freed + clen <= 0xffff);
+      pbufs_freed = (u16_t)(pbufs_freed + clen);
+      pbuf_free(p);
     }
-    else {
-      /* Reconstruct the zoned source and destination addresses, so that we do
-       * not end up sending the ICMP response over the wrong link. */
-      ip6_addr_t src_addr, dest_addr;
-      ip6_addr_copy_from_packed(src_addr, IPV6_FRAG_SRC(ipr));
-      ip6_addr_set_zone(&src_addr, ipr->src_zone);
-      ip6_addr_copy_from_packed(dest_addr, IPV6_FRAG_DEST(ipr));
-      ip6_addr_set_zone(&dest_addr, ipr->dest_zone);
-      /* Send the actual ICMP response. */
-      icmp6_time_exceeded_with_addrs(p, ICMP6_TE_FRAG, &src_addr, &dest_addr);
-    }
-    clen = pbuf_clen(p);
-    LWIP_ASSERT("pbufs_freed + clen <= 0xffff", pbufs_freed + clen <= 0xffff);
-    pbufs_freed = (u16_t)(pbufs_freed + clen);
-    pbuf_free(p);
   }
 #endif /* LWIP_ICMP6 */
 
@@ -447,6 +449,19 @@ ip6_reass(struct pbuf *p)
         }
       }
 #endif /* IP_REASS_CHECK_OVERLAP */
+      /* Check if the fragments received so far have no gaps. */
+      if (iprh_prev != NULL) {
+        if (iprh_prev->end != start) {
+          /* There is a fragment missing between the current
+           * and the previous fragment */
+          valid = 0;
+        }
+      }
+      if (end != iprh_tmp->start) {
+        /* There is a fragment missing between the current
+         * and the following fragment */
+        valid = 0;
+      }
       /* the new pbuf should be inserted before this */
       next_pbuf = q;
       if (iprh_prev != NULL) {
@@ -658,6 +673,7 @@ ip6_reass(struct pbuf *p)
     }
 
     /* Return the pbuf chain */
+    MIB2_STATS_INC(mib2.ip6reasmoks);
     return p;
   }
   /* the datagram is not (yet?) reassembled completely */

src/core/ipv6/nd6.c

@@ -687,7 +687,7 @@ nd6_input(struct pbuf *p, struct netif *inp)
       case ND6_OPTION_TYPE_SOURCE_LLADDR:
       {
         struct lladdr_option *lladdr_opt;
-        if (option_len < sizeof(struct lladdr_option)) {
+        if (option_len < (ND6_LLADDR_OPTION_MIN_LENGTH + inp->hwaddr_len)) {
           goto lenerr_drop_free_return;
         }
         lladdr_opt = (struct lladdr_option *)buffer;
@@ -1176,7 +1176,7 @@ nd6_tmr(void)
 
 /** Send a neighbor solicitation message for a specific neighbor cache entry
  *
- * @param entry the neightbor cache entry for which to send the message
+ * @param entry the neighbor cache entry for which to send the message
  * @param flags one of ND6_SEND_FLAG_*
  */
 static void
@@ -1707,7 +1707,7 @@ nd6_select_router(const ip6_addr_t *ip6addr, struct netif *netif)
   /* Look for valid routers. A reachable router is preferred. */
   valid_router = -1;
   for (i = 0; i < LWIP_ND6_NUM_ROUTERS; i++) {
-    /* Is the router netif both set and apppropriate? */
+    /* Is the router netif both set and appropriate? */
     if (default_router_list[i].neighbor_entry != NULL) {
       router_netif = default_router_list[i].neighbor_entry->netif;
       if ((router_netif != NULL) && (netif != NULL ? netif == router_netif :

src/core/mem.c

@@ -60,6 +60,7 @@
 #include "lwip/stats.h"
 #include "lwip/err.h"
 
+#include <stdio.h>  /* snprintf */
 #include <string.h>
 
 #if MEM_LIBC_MALLOC
@@ -151,7 +152,7 @@ mem_overflow_init_raw(void *p, size_t size)
 }
 #endif /* MEM_OVERFLOW_CHECK || MEMP_OVERFLOW_CHECK */
 
-#if MEM_LIBC_MALLOC || MEM_USE_POOLS
+#if MEM_CUSTOM_ALLOCATOR || MEM_USE_POOLS
 
 /** mem_init is not used when using pools instead of a heap or using
  * C library malloc().
@@ -171,23 +172,9 @@ mem_trim(void *mem, mem_size_t size)
   LWIP_UNUSED_ARG(size);
   return mem;
 }
-#endif /* MEM_LIBC_MALLOC || MEM_USE_POOLS */
+#endif /* MEM_CUSTOM_ALLOCATOR || MEM_USE_POOLS */
 
-#if MEM_LIBC_MALLOC
-/* lwIP heap implemented using C library malloc() */
-
-/* in case C library malloc() needs extra protection,
- * allow these defines to be overridden.
- */
-#ifndef mem_clib_free
-#define mem_clib_free free
-#endif
-#ifndef mem_clib_malloc
-#define mem_clib_malloc malloc
-#endif
-#ifndef mem_clib_calloc
-#define mem_clib_calloc calloc
-#endif
+#if MEM_CUSTOM_ALLOCATOR
 
 #if LWIP_STATS && MEM_STATS
 #define MEM_LIBC_STATSHELPER_SIZE LWIP_MEM_ALIGN_SIZE(sizeof(mem_size_t))
@@ -206,7 +193,7 @@ mem_trim(void *mem, mem_size_t size)
 void *
 mem_malloc(mem_size_t size)
 {
-  void *ret = mem_clib_malloc(size + MEM_LIBC_STATSHELPER_SIZE);
+  void *ret = MEM_CUSTOM_MALLOC(size + MEM_LIBC_STATSHELPER_SIZE);
   if (ret == NULL) {
     MEM_STATS_INC_LOCKED(err);
   } else {
@@ -233,7 +220,7 @@ mem_free(void *rmem)
   rmem = (u8_t *)rmem - MEM_LIBC_STATSHELPER_SIZE;
   MEM_STATS_DEC_USED_LOCKED(used, *(mem_size_t *)rmem);
 #endif
-  mem_clib_free(rmem);
+  MEM_CUSTOM_FREE(rmem);
 }
 
 #elif MEM_USE_POOLS
@@ -805,7 +792,7 @@ mem_trim(void *rmem, mem_size_t new_size)
   /* else {
     next struct mem is used but size between mem and mem2 is not big enough
     to create another struct mem
-    -> don't do anyhting.
+    -> don't do anything.
     -> the remaining space stays unused since it is too small
   } */
 #if MEM_OVERFLOW_CHECK
@@ -977,14 +964,14 @@ mem_malloc_adjust_lfree:
 
 #endif /* MEM_USE_POOLS */
 
-#if MEM_LIBC_MALLOC && (!LWIP_STATS || !MEM_STATS)
+#if MEM_CUSTOM_ALLOCATOR && (!LWIP_STATS || !MEM_STATS)
 void *
 mem_calloc(mem_size_t count, mem_size_t size)
 {
-  return mem_clib_calloc(count, size);
+  return MEM_CUSTOM_CALLOC(count, size);
 }
 
-#else /* MEM_LIBC_MALLOC && (!LWIP_STATS || !MEM_STATS) */
+#else /* MEM_CUSTOM_ALLOCATOR && (!LWIP_STATS || !MEM_STATS) */
 /**
  * Contiguously allocates enough space for count objects that are size bytes
  * of memory each and returns a pointer to the allocated memory.
@@ -1014,4 +1001,4 @@ mem_calloc(mem_size_t count, mem_size_t size)
   }
   return p;
 }
-#endif /* MEM_LIBC_MALLOC && (!LWIP_STATS || !MEM_STATS) */
+#endif /* MEM_CUSTOM_ALLOCATOR && (!LWIP_STATS || !MEM_STATS) */

src/core/netif.c

@@ -1409,7 +1409,7 @@ netif_ip6_addr_set_parts(struct netif *netif, s8_t addr_idx, u32_t i0, u32_t i1,
     if (ip6_addr_isvalid(netif_ip6_addr_state(netif, addr_idx))) {
       netif_do_ip_addr_changed(netif_ip_addr6(netif, addr_idx), &new_ipaddr);
     }
-    /* @todo: remove/readd mib2 ip6 entries? */
+    /* @todo: remove/re-add mib2 ip6 entries? */
 
     ip_addr_copy(netif->ip6_addr[addr_idx], new_ipaddr);
 

src/core/pbuf.c

@@ -186,6 +186,8 @@ pbuf_init_alloced_pbuf(struct pbuf *p, void *payload, u16_t tot_len, u16_t len,
   p->flags = flags;
   p->ref = 1;
   p->if_idx = NETIF_NO_INDEX;
+
+  LWIP_PBUF_CUSTOM_DATA_INIT(p);
 }
 
 /**
@@ -858,6 +860,7 @@ pbuf_cat(struct pbuf *h, struct pbuf *t)
 
   LWIP_ERROR("(h != NULL) && (t != NULL) (programmer violates API)",
              ((h != NULL) && (t != NULL)), return;);
+  LWIP_ASSERT("Creating an infinite loop", h != t);
 
   /* proceed to last pbuf of chain */
   for (p = h; p->next != NULL; p = p->next) {
@@ -1094,12 +1097,15 @@ pbuf_copy_partial(const struct pbuf *buf, void *dataptr, u16_t len, u16_t offset
  * a copy into the user-supplied buffer.
  *
  * @param p the pbuf from which to copy data
- * @param buffer the application supplied buffer
- * @param bufsize size of the application supplied buffer
- * @param len length of data to copy (dataptr must be big enough). No more
- * than buf->tot_len will be copied, irrespective of len
+ * @param buffer the application supplied buffer. May be NULL if the caller does not
+ * want to copy. In this case, offset + len should be checked against p->tot_len,
+ * since there's no way for the caller to know why NULL is returned.
+ * @param bufsize size of the application supplied buffer (when buffer is != NULL)
+ * @param len length of data to copy (p and buffer must be big enough)
  * @param offset offset into the packet buffer from where to begin copying len bytes
- * @return the number of bytes copied, or 0 on failure
+ * @return - pointer into pbuf payload if that is already contiguous (no copy needed)
+ *         - pointer to 'buffer' if data was not contiguous and had to be copied
+ *         - NULL on error
  */
 void *
 pbuf_get_contiguous(const struct pbuf *p, void *buffer, size_t bufsize, u16_t len, u16_t offset)
@@ -1108,8 +1114,7 @@ pbuf_get_contiguous(const struct pbuf *p, void *buffer, size_t bufsize, u16_t le
   u16_t out_offset;
 
   LWIP_ERROR("pbuf_get_contiguous: invalid buf", (p != NULL), return NULL;);
-  LWIP_ERROR("pbuf_get_contiguous: invalid dataptr", (buffer != NULL), return NULL;);
-  LWIP_ERROR("pbuf_get_contiguous: invalid dataptr", (bufsize >= len), return NULL;);
+  LWIP_ERROR("pbuf_get_contiguous: invalid bufsize", (buffer == NULL) || (bufsize >= len), return NULL;);
 
   q = pbuf_skip_const(p, offset, &out_offset);
   if (q != NULL) {
@@ -1117,6 +1122,10 @@ pbuf_get_contiguous(const struct pbuf *p, void *buffer, size_t bufsize, u16_t le
       /* all data in this pbuf, return zero-copy */
       return (u8_t *)q->payload + out_offset;
     }
+    if (buffer == NULL) {
+      /* the caller does not want to copy */
+      return NULL;
+    }
     /* need to copy */
     if (pbuf_copy_partial(q, buffer, len, out_offset) != len) {
       /* copying failed: pbuf is too short */

src/core/tcp_in.c

@@ -1564,7 +1564,7 @@ tcp_receive(struct tcp_pcb *pcb)
           recv_data = inseg.p;
           /* Since this pbuf now is the responsibility of the
              application, we delete our reference to it so that we won't
-             (mistakingly) deallocate it. */
+             (mistakenly) deallocate it. */
           inseg.p = NULL;
         }
         if (TCPH_FLAGS(inseg.tcphdr) & TCP_FIN) {
@@ -1687,10 +1687,20 @@ tcp_receive(struct tcp_pcb *pcb)
                  ->ooseq. We check the lengths to see which one to
                  discard. */
               if (inseg.len > next->len) {
+                struct tcp_seg* cseg;
+
+                /* If next segment is the last segment in ooseq
+                   and smaller than inseg, that means it has been
+                   trimmed before to fit our window, so we just
+                   break here. */
+                if (next->next == NULL) {
+                  break;
+                }
+
                 /* The incoming segment is larger than the old
                    segment. We replace some segments with the new
                    one. */
-                struct tcp_seg *cseg = tcp_seg_copy(&inseg);
+                cseg = tcp_seg_copy(&inseg);
                 if (cseg != NULL) {
                   if (prev != NULL) {
                     prev->next = cseg;
@@ -1983,17 +1993,17 @@ tcp_parseopt(struct tcp_pcb *pcb)
             return;
           }
           /* TCP timestamp option with valid length */
-          tsval = tcp_get_next_optbyte();
-          tsval |= (tcp_get_next_optbyte() << 8);
+          tsval = (tcp_get_next_optbyte() << 24);
           tsval |= (tcp_get_next_optbyte() << 16);
-          tsval |= (tcp_get_next_optbyte() << 24);
+          tsval |= (tcp_get_next_optbyte() << 8);
+          tsval |= tcp_get_next_optbyte();
           if (flags & TCP_SYN) {
-            pcb->ts_recent = lwip_ntohl(tsval);
+            pcb->ts_recent = tsval;
             /* Enable sending timestamps in every segment now that we know
                the remote host supports it. */
             tcp_set_flags(pcb, TF_TIMESTAMP);
           } else if (TCP_SEQ_BETWEEN(pcb->ts_lastacksent, seqno, seqno + tcplen)) {
-            pcb->ts_recent = lwip_ntohl(tsval);
+            pcb->ts_recent = tsval;
           }
           /* Advance to next option (6 bytes already read) */
           tcp_optidx += LWIP_TCP_OPT_LEN_TS - 6;

src/core/tcp_out.c

@@ -301,7 +301,7 @@ tcp_seg_add_chksum(u16_t chksum, u16_t len, u16_t *seg_chksum,
 /** Checks if tcp_write is allowed or not (checks state, snd_buf and snd_queuelen).
  *
  * @param pcb the tcp pcb to check for
- * @param len length of data to send (checked agains snd_buf)
+ * @param len length of data to send (checked against snd_buf)
  * @return ERR_OK if tcp_write is allowed to proceed, another err_t otherwise
  */
 static err_t
@@ -1987,6 +1987,9 @@ tcp_rst_common(const struct tcp_pcb *pcb, u32_t seqno, u32_t ackno,
 
   LWIP_ASSERT("tcp_rst: invalid local_ip", local_ip != NULL);
   LWIP_ASSERT("tcp_rst: invalid remote_ip", remote_ip != NULL);
+  /* these two are passed only for checks, disable warnings without asserts */
+  LWIP_UNUSED_ARG(local_ip);
+  LWIP_UNUSED_ARG(remote_ip);
 
   optlen = LWIP_TCP_OPT_LENGTH_SEGMENT(0, pcb);
 

src/core/udp.c

@@ -988,7 +988,7 @@ udp_bind(struct udp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port)
     for (ipcb = udp_pcbs; ipcb != NULL; ipcb = ipcb->next) {
       if (pcb != ipcb) {
         /* By default, we don't allow to bind to a port that any other udp
-           PCB is already bound to, unless *all* PCBs with that port have tha
+           PCB is already bound to, unless *all* PCBs with that port have the
            REUSEADDR flag set. */
 #if SO_REUSE
         if (!ip_get_option(pcb, SOF_REUSEADDR) ||

src/include/lwip/apps/http_client.h

@@ -53,7 +53,7 @@ extern "C" {
 
 /**
  * @ingroup httpc
- * HTTPC_HAVE_FILE_IO: define this to 1 to have functions dowloading directly
+ * HTTPC_HAVE_FILE_IO: define this to 1 to have functions downloading directly
  * to disk via fopen/fwrite.
  * These functions are example implementations of the interface only.
  */
@@ -116,7 +116,7 @@ typedef void (*httpc_result_fn)(void *arg, httpc_result_t httpc_result, u32_t rx
  * @param connection http client connection
  * @param arg argument specified when initiating the request
  * @param hdr header pbuf(s) (may contain data also)
- * @param hdr_len length of the heders in 'hdr'
+ * @param hdr_len length of the headers in 'hdr'
  * @param content_len content length as received in the headers (-1 if not received)
  * @return if != ERR_OK is returned, the connection is aborted
  */

src/include/lwip/apps/mqtt.h

@@ -79,6 +79,8 @@ struct mqtt_connect_client_info_t {
   const char* will_topic;
   /** will_msg, see will_topic */
   const char* will_msg;
+  /** will_msg length, 0 to compute length from will_msg string */
+  u8_t will_msg_len;
   /** will_qos, see will_topic */
   u8_t will_qos;
   /** will_retain, see will_topic */

src/include/lwip/apps/snmp.h

@@ -55,8 +55,6 @@ struct snmp_varbind
 {
   /** pointer to next varbind, NULL for last in list */
   struct snmp_varbind *next;
-  /** pointer to previous varbind, NULL for first in list */
-  struct snmp_varbind *prev;
 
   /** object identifier */
   struct snmp_obj_id oid;

src/include/lwip/apps/sntp_opts.h

@@ -158,14 +158,14 @@
 
 /** SNTP receive timeout - in milliseconds
  * Also used as retry timeout - this shouldn't be too low.
- * Default is 15 seconds. Must not be beolw 15 seconds by specification (i.e. 15000)
+ * Default is 15 seconds. Must not be below 15 seconds by specification (i.e. 15000)
  */
 #if !defined SNTP_RECV_TIMEOUT || defined __DOXYGEN__
 #define SNTP_RECV_TIMEOUT           15000
 #endif
 
 /** SNTP update delay - in milliseconds
- * Default is 1 hour. Must not be beolw 60 seconds by specification (i.e. 60000)
+ * Default is 1 hour. Must not be below 60 seconds by specification (i.e. 60000)
  */
 #if !defined SNTP_UPDATE_DELAY || defined __DOXYGEN__
 #define SNTP_UPDATE_DELAY           3600000

src/include/lwip/arch.h

@@ -382,7 +382,7 @@ extern "C" {
 #define LWIP_PROVIDE_ERRNO
 #endif
 
-/* Use a special, reproducable version of rand() for fuzz tests? */
+/* Use a special, reproducible version of rand() for fuzz tests? */
 #ifdef LWIP_RAND_FOR_FUZZ
 #ifdef LWIP_RAND
 #undef LWIP_RAND

src/include/lwip/def.h

@@ -148,6 +148,16 @@ char* lwip_strnstr(const char* buffer, const char* token, size_t n);
 /* This can be #defined to strnistr() depending on your platform */
 char* lwip_strnistr(const char* buffer, const char* token, size_t n);
 #endif
+#ifndef lwip_memcmp_consttime
+/* This could be #defined to something existing on your platform
+ * The goal of this function is to compare memory with constant runtime in order to prevent
+ * timing attacks to various parts in the stack.
+ * To do that, in contrast to memcmp(), it only returns:
+ * 0: equal
+ * != 0: not equal
+ */
+int lwip_memcmp_consttime(const void* s1, const void* s2, size_t len);
+#endif
 
 #ifdef __cplusplus
 }

src/include/lwip/init.h

@@ -54,11 +54,11 @@ extern "C" {
 /** x.X.x: Minor version of the stack */
 #define LWIP_VERSION_MINOR      2
 /** x.x.X: Revision of the stack */
-#define LWIP_VERSION_REVISION   0
+#define LWIP_VERSION_REVISION   2
 /** For release candidates, this is set to 1..254
   * For official releases, this is set to 255 (LWIP_RC_RELEASE)
   * For development versions (Git), this is set to 0 (LWIP_RC_DEVELOPMENT) */
-#define LWIP_VERSION_RC         LWIP_RC_RELEASE
+#define LWIP_VERSION_RC         LWIP_RC_DEVELOPMENT
 
 /** LWIP_VERSION_RC is set to LWIP_RC_RELEASE for official releases */
 #define LWIP_RC_RELEASE         255

src/include/lwip/mem.h

@@ -43,7 +43,7 @@
 extern "C" {
 #endif
 
-#if MEM_LIBC_MALLOC
+#if MEM_CUSTOM_ALLOCATOR
 
 #include "lwip/arch.h"
 

src/include/lwip/opt.h

@@ -245,10 +245,28 @@
 /**
  * MEM_LIBC_MALLOC==1: Use malloc/free/realloc provided by your C-library
  * instead of the lwip internal allocator. Can save code size if you
- * already use it.
+ * already use it. Specialized case of MEM_CUSTOM_ALLOCATOR.
+ * @see MEM_CUSTOM_ALLOCATOR
  */
 #if !defined MEM_LIBC_MALLOC || defined __DOXYGEN__
 #define MEM_LIBC_MALLOC                 0
+#elif MEM_LIBC_MALLOC
+#define MEM_CUSTOM_ALLOCATOR            1
+#define MEM_CUSTOM_FREE                 free
+#define MEM_CUSTOM_MALLOC               malloc
+#define MEM_CUSTOM_CALLOC               calloc
+#endif
+
+/**
+ * MEM_CUSTOM_ALLOCATOR==1: Use malloc/free/realloc provided by a custom
+ * implementation instead of the lwip internal allocator. Can save code size if
+ * you already use it. If enabled, you have to define those functions:
+ *  \#define MEM_CUSTOM_FREE   my_free
+ *  \#define MEM_CUSTOM_MALLOC my_malloc
+ *  \#define MEM_CUSTOM_CALLOC my_calloc
+ */
+#if !defined MEM_CUSTOM_ALLOCATOR || defined __DOXYGEN__
+#define MEM_CUSTOM_ALLOCATOR            0
 #endif
 
 /**
@@ -671,7 +689,7 @@
 #endif
 
 /**
- * LWIP_VLAN_PCP==1: Enable outgoing VLAN taggning of frames on a per-PCB basis
+ * LWIP_VLAN_PCP==1: Enable outgoing VLAN tagging of frames on a per-PCB basis
  * for QoS purposes. With this feature enabled, each PCB has a new variable:
  * "netif_hints.tci" (Tag Control Identifier).
  * The TCI contains three fields: VID, CFI and PCP.
@@ -969,12 +987,12 @@
 #define LWIP_DHCP_MAX_DNS_SERVERS       DNS_MAX_SERVERS
 #endif
 
-/** LWIP_DHCP_DISCOVER_ADD_HOSTNAME: Set to 1 to include hostname opt in discover packets.
+/** LWIP_DHCP_DISCOVER_ADD_HOSTNAME: Set to 0 to not include hostname opt in discover packets.
  * If the hostname is not set in the DISCOVER packet, then some servers might issue an OFFER with hostname
  * configured and consequently reject the REQUEST with any other hostname.
  */
 #if !defined LWIP_DHCP_DISCOVER_ADD_HOSTNAME || defined __DOXYGEN__
-#define LWIP_DHCP_DISCOVER_ADD_HOSTNAME 0
+#define LWIP_DHCP_DISCOVER_ADD_HOSTNAME 1
 #endif /* LWIP_DHCP_DISCOVER_ADD_HOSTNAME */
 /**
  * @}
@@ -1610,10 +1628,22 @@
 /**
  * LWIP_PBUF_CUSTOM_DATA: Store private data on pbufs (e.g. timestamps)
  * This extends struct pbuf so user can store custom data on every pbuf.
+ * e.g.:
+ *  \#define LWIP_PBUF_CUSTOM_DATA   u32_t myref;
  */
 #if !defined LWIP_PBUF_CUSTOM_DATA || defined __DOXYGEN__
 #define LWIP_PBUF_CUSTOM_DATA
 #endif
+
+/**
+ * LWIP_PBUF_CUSTOM_DATA_INIT: Initialize private data on pbufs.
+ * e.g. for the above example definition:
+ *  \#define LWIP_PBUF_CUSTOM_DATA(p) (p)->myref = 0
+ */
+#if !defined LWIP_PBUF_CUSTOM_DATA_INIT || defined __DOXYGEN__
+#define LWIP_PBUF_CUSTOM_DATA_INIT(p)
+#endif
+
 /**
  * @}
  */
@@ -2238,7 +2268,7 @@
  * MEM_STATS==1: Enable mem.c stats.
  */
 #if !defined MEM_STATS || defined __DOXYGEN__
-#define MEM_STATS                       ((MEM_LIBC_MALLOC == 0) && (MEM_USE_POOLS == 0))
+#define MEM_STATS                       ((MEM_CUSTOM_ALLOCATOR == 0) && (MEM_USE_POOLS == 0))
 #endif
 
 /**

src/include/lwip/prot/nd6.h

@@ -153,6 +153,7 @@ PACK_STRUCT_END
 /** Link-layer address option. */
 #define ND6_OPTION_TYPE_SOURCE_LLADDR (0x01)
 #define ND6_OPTION_TYPE_TARGET_LLADDR (0x02)
+#define ND6_LLADDR_OPTION_MIN_LENGTH (2)
 #ifdef PACK_STRUCT_USE_INCLUDES
 #  include "arch/bpstruct.h"
 #endif

src/include/lwip/snmp.h

@@ -1,6 +1,6 @@
 /**
  * @file
- * SNMP support API for implementing netifs and statitics for MIB2
+ * SNMP support API for implementing netifs and statistics for MIB2
  */
 
 /*

src/include/lwip/stats.h

@@ -122,7 +122,7 @@ struct stats_sys {
 
 /** SNMP MIB2 stats */
 struct stats_mib2 {
-  /* IP */
+  /* IPv4 */
   u32_t ipinhdrerrors;
   u32_t ipinaddrerrors;
   u32_t ipinunknownprotos;
@@ -140,6 +140,9 @@ struct stats_mib2 {
   u32_t ipforwdatagrams;
   u32_t ipinreceives;
 
+  /* IPv6 */
+  u32_t ip6reasmoks;
+
   /* TCP */
   u32_t tcpactiveopens;
   u32_t tcppassiveopens;

src/include/netif/ppp/pppoe.h

@@ -128,7 +128,7 @@ PACK_STRUCT_END
 #define PPPOE_TAG_RELAYSID    0x0110  /* relay session id */
 #define PPPOE_TAG_SNAME_ERR   0x0201  /* service name error */
 #define PPPOE_TAG_ACSYS_ERR   0x0202  /* AC system error */
-#define PPPOE_TAG_GENERIC_ERR 0x0203  /* gerneric error */
+#define PPPOE_TAG_GENERIC_ERR 0x0203  /* generic error */
 
 #define PPPOE_CODE_PADI       0x09    /* Active Discovery Initiation */
 #define PPPOE_CODE_PADO       0x07    /* Active Discovery Offer */

src/include/netif/ppp/vj.h

@@ -53,7 +53,7 @@ extern "C" {
  *
  * There are 5 numbers which can change (they are always inserted
  * in the following order): TCP urgent pointer, window,
- * acknowlegement, sequence number and IP ID.  (The urgent pointer
+ * acknowledgement, sequence number and IP ID.  (The urgent pointer
  * is different from the others in that its value is sent, not the
  * change in value.)  Since typical use of SLIP links is biased
  * toward small packets (see comments on MTU/MSS below), changes

src/netif/ppp/auth.c

@@ -1012,8 +1012,8 @@ int auth_check_passwd(ppp_pcb *pcb, char *auser, unsigned int userlen, char *apa
     secretpasswdlen = strlen(pcb->settings.passwd);
     if (secretuserlen == userlen
         && secretpasswdlen == passwdlen
-        && !memcmp(auser, pcb->settings.user, userlen)
-        && !memcmp(apasswd, pcb->settings.passwd, passwdlen) ) {
+        && !lwip_memcmp_consttime(auser, pcb->settings.user, userlen)
+        && !lwip_memcmp_consttime(apasswd, pcb->settings.passwd, passwdlen) ) {
       *msg = "Login ok";
       *msglen = sizeof("Login ok")-1;
       return 1;

src/netif/ppp/fsm.c

@@ -787,8 +787,9 @@ void fsm_sdata(fsm *f, u_char code, u_char id, const u_char *data, int datalen)
     }
 
     outp = (u_char*)p->payload;
-    if (datalen) /* && data != outp + PPP_HDRLEN + HEADERLEN)  -- was only for fsm_sconfreq() */
-	MEMCPY(outp + PPP_HDRLEN + HEADERLEN, data, datalen);
+    if (datalen && data != NULL) { /* && data != outp + PPP_HDRLEN + HEADERLEN)  -- was only for fsm_sconfreq() */
+      MEMCPY(outp + PPP_HDRLEN + HEADERLEN, data, datalen);
+    }
     MAKEHEADER(outp, f->protocol);
     PUTCHAR(code, outp);
     PUTCHAR(id, outp);

src/netif/ppp/lcp.c

@@ -1499,7 +1499,7 @@ static int lcp_nakci(fsm *f, u_char *p, int len, int treat_as_reject) {
 	    break;
 	case CI_AUTHTYPE:
 		/* This is potentially dead code (#if !PPP_AUTH_SUPPORT)
-		 * Thus the double parantheses to mark the code explicitely
+		 * Thus the double parentheses to mark the code explicitly
 		 * disabled when building with clang
 		 */
 	    if ((0

test/fuzz/fuzz_common.c

@@ -214,6 +214,7 @@ static void input_pkt(struct netif *netif, const u8_t *data, size_t len)
 
 static void input_pkts(enum lwip_fuzz_type type, struct netif *netif, const u8_t *data, size_t len)
 {
+  size_t packet_nr = 0;
   remfuzz_ptr = data;
   remfuzz_len = len;
 
@@ -228,6 +229,7 @@ static void input_pkts(enum lwip_fuzz_type type, struct netif *netif, const u8_t
 #ifdef LWIP_FUZZ_SYS_NOW
       u32_t external_delay = 0;
 #endif
+      packet_nr++;
       if (type == LWIP_FUZZ_MULTIPACKET_TIME) {
 #ifdef LWIP_FUZZ_SYS_NOW
         /* Extract external delay time from fuzz pool */
@@ -265,7 +267,7 @@ static void input_pkts(enum lwip_fuzz_type type, struct netif *netif, const u8_t
 #if LWIP_TCP
 static struct altcp_pcb *tcp_client_pcb;  /* a pcb for the TCP client */
 static struct altcp_pcb *tcp_server_pcb;  /* a pcb for the TCP server */
-static u16_t            tcp_remote_port;  /* a TCP port number of the destionation */
+static u16_t            tcp_remote_port;  /* a TCP port number of the destination */
 static u16_t            tcp_local_port;   /* a TCP port number of the local server */
 
 /**
@@ -517,7 +519,7 @@ udp_app_fuzz_input(struct udp_pcb *pcb, const ip_addr_t *addr, u16_t port)
        *     We use udp_send().
        *
        * server:
-       *     The pcb does NOT have infomation about the destionation.
+       *     The pcb does NOT have information about the destination.
        *     We use udp_sendto().
        */
       if (addr == NULL) {
@@ -694,8 +696,8 @@ u32_t lwip_fuzz_rand(void)
   static s32_t state[1] = {0xdeadbeef};
   uint64_t val = state[0] & 0xffffffff;
   val = ((val * 1103515245) + 12345) & 0x7fffffff;
-  state[0] = val;
-  result = val;
+  state[0] = (s32_t)val;
+  result = (u32_t)val;
   return result;
 #endif
 }

test/unit/api/test_sockets.c

@@ -252,7 +252,7 @@ static void test_sockets_msgapi_update_iovs(struct msghdr *msg, size_t bytes)
 {
   msg_iovlen_t i;
 
-  /* note: this modifies the underyling iov_base and iov_len for a partial
+  /* note: this modifies the underlying iov_base and iov_len for a partial
      read for an individual vector. This updates the msg->msg_iov pointer
      to skip fully consumed vectors */
   

test/unit/core/test_pbuf.c

@@ -88,6 +88,7 @@ START_TEST(test_pbuf_copy_zero_pbuf)
   fail_unless(p2->ref == 1);
 
   p3 = pbuf_alloc(PBUF_RAW, p1->tot_len, PBUF_POOL);
+  fail_unless(p3 != NULL);
   err = pbuf_copy(p3, p1);
   fail_unless(err == ERR_VAL);
 
@@ -161,8 +162,8 @@ START_TEST(test_pbuf_copy_partial_pbuf)
   b->payload = packet;
   pbuf_cat(a, b);
   dest = pbuf_alloc(PBUF_RAW, 14, PBUF_RAM);
-  memset(dest->payload, 0, dest->len);
   fail_unless(dest != NULL);
+  memset(dest->payload, 0, dest->len);
 
   /* Don't copy if data will not fit */
   err = pbuf_copy_partial_pbuf(dest, a, a->tot_len, 4);
@@ -198,6 +199,7 @@ START_TEST(test_pbuf_split_64k_on_small_pbufs)
   LWIP_UNUSED_ARG(_i);
 
   p = pbuf_alloc(PBUF_RAW, 1, PBUF_POOL);
+  fail_unless(p != NULL);
   pbuf_split_64k(p, &rest);
   fail_unless(p->tot_len == 1);
   pbuf_free(p);
@@ -267,9 +269,14 @@ START_TEST(test_pbuf_take_at_edge)
   u8_t *out;
   int i;
   u8_t testdata[] = { 0x01, 0x08, 0x82, 0x02 };
-  struct pbuf *p = pbuf_alloc(PBUF_RAW, 1024, PBUF_POOL);
-  struct pbuf *q = p->next;
+  struct pbuf *p;
+  struct pbuf *q;
   LWIP_UNUSED_ARG(_i);
+
+  p = pbuf_alloc(PBUF_RAW, 1024, PBUF_POOL);
+  fail_unless(p != NULL);
+  q = p->next;
+
   /* alloc big enough to get a chain of pbufs */
   fail_if(p->tot_len == p->len);
   memset(p->payload, 0, p->len);
@@ -319,9 +326,14 @@ START_TEST(test_pbuf_get_put_at_edge)
   u8_t *out;
   u8_t testdata = 0x01;
   u8_t getdata;
-  struct pbuf *p = pbuf_alloc(PBUF_RAW, 1024, PBUF_POOL);
-  struct pbuf *q = p->next;
+  struct pbuf *p;
+  struct pbuf *q;
   LWIP_UNUSED_ARG(_i);
+
+  p = pbuf_alloc(PBUF_RAW, 1024, PBUF_POOL);
+  fail_unless(p != NULL);
+  q = p->next;
+
   /* alloc big enough to get a chain of pbufs */
   fail_if(p->tot_len == p->len);
   memset(p->payload, 0, p->len);