Author: ae
Date: Sun Feb 18 11:36:46 2018
New Revision: 329518
URL: https://svnweb.freebsd.org/changeset/base/329518
Log:
MFC r329101:
Reinitialize IP header length after checksum calculation. It is used
later by TCP-MD5 code.
This fixes the problem with broken TCP-MD5 over IPv4 when NIC has
disabled TCP checksum offloading.
PR: 223835
Modified:
stable/11/sys/netinet/tcp_input.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/netinet/tcp_input.c
==============================================================================
--- stable/11/sys/netinet/tcp_input.c Sun Feb 18 11:17:39 2018
(r329517)
+++ stable/11/sys/netinet/tcp_input.c Sun Feb 18 11:36:46 2018
(r329518)
@@ -706,6 +706,7 @@ tcp_input(struct mbuf **mp, int *offp, int proto)
ip->ip_tos = iptos;
/* Re-initialization for later version check */
ip->ip_v = IPVERSION;
+ ip->ip_hl = off0 >> 2;
}
if (th->th_sum) {
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