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Integrate "task #7272 : LWIP_ICMP option". The new option LWIP_ICMP enable/disable ICMP module inside the IP stack (enable per default). Be careful, disabling ICMP make your product non-compliant to RFC1122, but help to reduce footprint, and to reduce "visibility" on the Internet.

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This commit is contained in:
fbernon
2007-09-05 17:20:45 +00:00
parent 90a3f88c08
commit ca866c0d7d
9 changed files with 44 additions and 10 deletions
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9
src/core/ipv6/icmp6.c
View File

@@ -42,6 +42,7 @@
#include "lwip/stats.h"
#if LWIP_ICMP /* don't build if not configured for use in lwipopts.h */
void
icmp_input(struct pbuf *p, struct netif *inp)
@@ -192,10 +193,4 @@ icmp_time_exceeded(struct pbuf *p, enum icmp_te_type t)
pbuf_free(q);
}
#endif /* LWIP_ICMP */

7
src/core/ipv6/ip6.c
View File

@@ -111,10 +111,12 @@ ip_forward(struct pbuf *p, struct ip_hdr *iphdr)
}
/* Decrement TTL and send ICMP if ttl == 0. */
if (--iphdr->hoplim == 0) {
#if LWIP_ICMP
/* Don't send ICMP messages in response to ICMP messages */
if (iphdr->nexthdr != IP_PROTO_ICMP) {
icmp_time_exceeded(p, ICMP_TE_TTL);
}
#endif /* LWIP_ICMP */
pbuf_free(p);
return;
}
@@ -232,12 +234,16 @@ ip_input(struct pbuf *p, struct netif *inp) {
case IP_PROTO_TCP:
tcp_input(p, inp);
break;
#if LWIP_ICMP
case IP_PROTO_ICMP:
icmp_input(p, inp);
break;
#endif /* LWIP_ICMP */
default:
#if LWIP_ICMP
/* send ICMP destination protocol unreachable */
icmp_dest_unreach(p, ICMP_DUR_PROTO);
#endif /* LWIP_ICMP */
pbuf_free(p);
LWIP_DEBUGF(IP_DEBUG, ("Unsupported transport protocol %"U16_F"\n",
iphdr->nexthdr));
@@ -382,4 +388,3 @@ ip_debug_print(struct pbuf *p)
LWIP_DEBUGF(IP_DEBUG, ("+-------------------------------+\n"));
}
#endif /* IP_DEBUG */