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Add comment about purpose of struct ip_addr2.

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Improve white space formatting, add parens in IP4_ADDR().
This commit is contained in:
curtmcd 2006-05-26 18:52:27 +00:00
parent 7026bbcdd4
commit 076a884651
1 changed files with 40 additions and 39 deletions
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79
src/include/ipv4/lwip/ip_addr.h
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@ -46,6 +46,10 @@ PACK_STRUCT_END
# include "arch/epstruct.h" # include "arch/epstruct.h"
#endif #endif
/*
* struct ipaddr2 is used in the definition of the ARP packet format in
* order to support compilers that don't have structure packing.
*/
#ifdef PACK_STRUCT_USE_INCLUDES #ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h" # include "arch/bpstruct.h"
#endif #endif
@ -71,48 +75,50 @@ extern const struct ip_addr ip_addr_broadcast;
/** IP_ADDR_ can be used as a fixed IP address /** IP_ADDR_ can be used as a fixed IP address
* for the wildcard and the broadcast address * for the wildcard and the broadcast address
*/ */
#define IP_ADDR_ANY ((struct ip_addr *)&ip_addr_any) #define IP_ADDR_ANY ((struct ip_addr *)&ip_addr_any)
#define IP_ADDR_BROADCAST ((struct ip_addr *)&ip_addr_broadcast) #define IP_ADDR_BROADCAST ((struct ip_addr *)&ip_addr_broadcast)
#define INADDR_NONE ((u32_t) 0xffffffff) /* 255.255.255.255 */ #define INADDR_NONE ((u32_t)0xffffffff) /* 255.255.255.255 */
#define INADDR_LOOPBACK ((u32_t) 0x7f000001) /* 127.0.0.1 */ #define INADDR_LOOPBACK ((u32_t)0x7f000001) /* 127.0.0.1 */
/* Definitions of the bits in an Internet address integer. /* Definitions of the bits in an Internet address integer.
On subnets, host and network parts are found according to On subnets, host and network parts are found according to
the subnet mask, not these masks. */ the subnet mask, not these masks. */
#define IN_CLASSA(a) ((((u32_t)(a)) & 0x80000000) == 0) #define IN_CLASSA(a) ((((u32_t)(a)) & 0x80000000) == 0)
#define IN_CLASSA_NET 0xff000000 #define IN_CLASSA_NET 0xff000000
#define IN_CLASSA_NSHIFT 24 #define IN_CLASSA_NSHIFT 24
#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET) #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
#define IN_CLASSA_MAX 128 #define IN_CLASSA_MAX 128
#define IN_CLASSB(a) ((((u32_t)(a)) & 0xc0000000) == 0x80000000) #define IN_CLASSB(a) ((((u32_t)(a)) & 0xc0000000) == 0x80000000)
#define IN_CLASSB_NET 0xffff0000 #define IN_CLASSB_NET 0xffff0000
#define IN_CLASSB_NSHIFT 16 #define IN_CLASSB_NSHIFT 16
#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET) #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
#define IN_CLASSB_MAX 65536 #define IN_CLASSB_MAX 65536
#define IN_CLASSC(a) ((((u32_t)(a)) & 0xe0000000) == 0xc0000000) #define IN_CLASSC(a) ((((u32_t)(a)) & 0xe0000000) == 0xc0000000)
#define IN_CLASSC_NET 0xffffff00 #define IN_CLASSC_NET 0xffffff00
#define IN_CLASSC_NSHIFT 8 #define IN_CLASSC_NSHIFT 8
#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
#define IN_CLASSD(a) (((u32_t)(a) & 0xf0000000) == 0xe0000000) #define IN_CLASSD(a) (((u32_t)(a) & 0xf0000000) == 0xe0000000)
#define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */
#define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */
#define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */
#define IN_MULTICAST(a) IN_CLASSD(a) #define IN_MULTICAST(a) IN_CLASSD(a)
#define IN_EXPERIMENTAL(a) (((u32_t)(a) & 0xf0000000) == 0xf0000000) #define IN_EXPERIMENTAL(a) (((u32_t)(a) & 0xf0000000) == 0xf0000000)
#define IN_BADCLASS(a) (((u32_t)(a) & 0xf0000000) == 0xf0000000) #define IN_BADCLASS(a) (((u32_t)(a) & 0xf0000000) == 0xf0000000)
#define IN_LOOPBACKNET 127 /* official! */ #define IN_LOOPBACKNET 127 /* official! */
#define IP4_ADDR(ipaddr, a,b,c,d) \
#define IP4_ADDR(ipaddr, a,b,c,d) (ipaddr)->addr = htonl(((u32_t)(a & 0xff) << 24) | ((u32_t)(b & 0xff) << 16) | \ (ipaddr)->addr = htonl(((u32_t)((a) & 0xff) << 24) | \
((u32_t)(c & 0xff) << 8) | (u32_t)(d & 0xff)) ((u32_t)((b) & 0xff) << 16) | \
((u32_t)((c) & 0xff) << 8) | \
(u32_t)((d) & 0xff))
#define ip_addr_set(dest, src) (dest)->addr = \ #define ip_addr_set(dest, src) (dest)->addr = \
((src) == NULL? 0:\ ((src) == NULL? 0:\
@ -137,23 +143,18 @@ u8_t ip_addr_isbroadcast(struct ip_addr *, struct netif *);
#define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000)) == ntohl(0xe0000000)) #define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000)) == ntohl(0xe0000000))
#define ip_addr_debug_print(debug, ipaddr) \
LWIP_DEBUGF(debug, ("%"U16_F".%"U16_F".%"U16_F".%"U16_F, \
ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff : 0, \
ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff : 0, \
ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff : 0, \
ipaddr ? (u16_t)ntohl((ipaddr)->addr) & 0xff : 0))
#define ip_addr_debug_print(debug, ipaddr) LWIP_DEBUGF(debug, ("%"U16_F".%"U16_F".%"U16_F".%"U16_F, \ /* These are cast to u16_t, with the intent that they are often arguments
ipaddr?(u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff:0, \ * to printf using the U16_F format from cc.h. */
ipaddr?(u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff:0, \
ipaddr?(u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff:0, \
ipaddr?(u16_t)ntohl((ipaddr)->addr) & 0xff:0U))
/* cast to unsigned int, as it is used as argument to printf functions
* which expect integer arguments. CSi: use cc.h formatters (conversion chars)! */
#define ip4_addr1(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff) #define ip4_addr1(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff)
#define ip4_addr2(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff) #define ip4_addr2(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff)
#define ip4_addr3(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff) #define ip4_addr3(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff)
#define ip4_addr4(ipaddr) ((u16_t)(ntohl((ipaddr)->addr)) & 0xff) #define ip4_addr4(ipaddr) ((u16_t)(ntohl((ipaddr)->addr)) & 0xff)
#endif /* __LWIP_IP_ADDR_H__ */ #endif /* __LWIP_IP_ADDR_H__ */