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Fixed IPv6 raw checksumming after a hint from Philip Gladstone

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This commit is contained in:
Simon Goldschmidt 2014-02-21 08:41:44 +01:00
parent 2225b8add7
commit 4d69d0eda5
1 changed files with 3 additions and 3 deletions
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6
src/core/raw.c
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@ -318,9 +318,9 @@ raw_sendto(struct raw_pcb *pcb, struct pbuf *p, ip_addr_t *ipaddr)
/* If requested, based on the IPV6_CHECKSUM socket option per RFC3542,
compute the checksum and update the checksum in the payload. */
if (PCB_ISIPV6(pcb) && pcb->chksum_reqd) {
u16_t chksum;
chksum = ip6_chksum_pseudo(q, pcb->protocol, q->tot_len, ipX_2_ip6(src_ip), ipX_2_ip6(dst_ip));
*(u16_t *)(((u8_t *)q->payload) + pcb->chksum_offset) = chksum;
u16_t chksum = ip6_chksum_pseudo(p, pcb->protocol, p->tot_len, ipX_2_ip6(src_ip), ipX_2_ip6(dst_ip));
LWIP_ASSERT("Checksum must fit into first pbuf", p->len >= (pcb->chksum_offset + 2));
SMEMCPY(((u8_t *)p->payload) + pcb->chksum_offset, &chksum, sizeof(u16_t));
}
#endif