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Added ability to disable checksum generation and checking at compile-time

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This commit is contained in:
lukem
2004-02-20 01:46:03 +00:00
parent 47984b0496
commit 4bf3359574
5 changed files with 51 additions and 4 deletions
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4
src/core/ipv4/ip.c
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@@ -209,6 +209,7 @@ ip_input(struct pbuf *p, struct netif *inp) {
}
/* verify checksum */
#if CHECKSUM_CHECK_IP
if (inet_chksum(iphdr, iphdrlen) != 0) {
LWIP_DEBUGF(IP_DEBUG | 2, ("Checksum (0x%x) failed, IP packet dropped.\n", inet_chksum(iphdr, iphdrlen)));
@@ -219,6 +220,7 @@ ip_input(struct pbuf *p, struct netif *inp) {
snmp_inc_ipindiscards();
return ERR_OK;
}
#endif
/* Trim pbuf. This should have been done at the netif layer,
but we'll do it anyway just to be sure that its done. */
@@ -415,7 +417,9 @@ ip_output_if(struct pbuf *p, struct ip_addr *src, struct ip_addr *dest,
}
IPH_CHKSUM_SET(iphdr, 0);
#if CHECKSUM_GEN_IP
IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, IP_HLEN));
#endif
} else {
iphdr = p->payload;
dest = &(iphdr->dest);