mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2024-10-04 05:39:53 +00:00
Code Issues Packages Projects Releases Wiki Activity

CHECKSUM_GEN_IP_INLINE: Use defines to access the u32_t part of an IP address

Browse Source
This commit is contained in:
goldsimon 2010-05-12 08:11:45 +00:00
parent f3face9f0c
commit 778c65d27c
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/core/ipv4/ip.c
View File

@ -603,8 +603,8 @@ err_t ip_output_if_opt(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
/* dest cannot be NULL here */
ip_addr_copy(iphdr->dest, *dest);
#if CHECKSUM_GEN_IP_INLINE
chk_sum += iphdr->dest.addr & 0xFFFF;
chk_sum += iphdr->dest.addr >> 16;
chk_sum += ip4_addr_get_u32(&iphdr->dest) & 0xFFFF;
chk_sum += ip4_addr_get_u32(&iphdr->dest) >> 16;
#endif /* CHECKSUM_GEN_IP_INLINE */
IPH_VHLTOS_SET(iphdr, 4, ip_hlen / 4, tos);
@ -630,8 +630,8 @@ err_t ip_output_if_opt(struct pbuf *p, ip_addr_t *src, ip_addr_t *dest,
}
#if CHECKSUM_GEN_IP_INLINE
chk_sum += iphdr->src.addr & 0xFFFF;
chk_sum += iphdr->src.addr >> 16;
chk_sum += ip4_addr_get_u32(&iphdr->src) & 0xFFFF;
chk_sum += ip4_addr_get_u32(&iphdr->src) >> 16;
chk_sum = (chk_sum >> 16) + (chk_sum & 0xFFFF);
chk_sum = (chk_sum >> 16) + chk_sum;
chk_sum = ~chk_sum;