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From: Pyun YongHyeon <yongari@FreeBSD.org>
Date: Wed, 13 Mar 2013 02:11:46 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r248227 - head/sys/dev/re
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Author: yongari
Date: Wed Mar 13 02:11:45 2013
New Revision: 248227
URL: http://svnweb.freebsd.org/changeset/base/248227

Log:
  Disable TX IP header checksum offloading on RL_HWREV_8168CP. The
  controller generates wrong checksummed frame if the IP packet has
  IP options.
  
  Submitted by:	Alexander Bluhm via brad@openbsd

Modified:
  head/sys/dev/re/if_re.c

Modified: head/sys/dev/re/if_re.c
==============================================================================
--- head/sys/dev/re/if_re.c	Wed Mar 13 01:40:01 2013	(r248226)
+++ head/sys/dev/re/if_re.c	Wed Mar 13 02:11:45 2013	(r248227)
@@ -1587,7 +1587,8 @@ re_attach(device_t dev)
 	 * packet has IP options so disable TX IP checksum offloading.
 	 */
 	if (sc->rl_hwrev->rl_rev == RL_HWREV_8168C ||
-	    sc->rl_hwrev->rl_rev == RL_HWREV_8168C_SPIN2)
+	    sc->rl_hwrev->rl_rev == RL_HWREV_8168C_SPIN2 ||
+	    sc->rl_hwrev->rl_rev == RL_HWREV_8168CP)
 		ifp->if_hwassist = CSUM_TCP | CSUM_UDP;
 	else
 		ifp->if_hwassist = CSUM_IP | CSUM_TCP | CSUM_UDP;
@@ -3419,7 +3420,8 @@ re_ioctl(struct ifnet *ifp, u_long comma
 			if ((ifp->if_capenable & IFCAP_TXCSUM) != 0) {
 				rev = sc->rl_hwrev->rl_rev;
 				if (rev == RL_HWREV_8168C ||
-				    rev == RL_HWREV_8168C_SPIN2)
+				    rev == RL_HWREV_8168C_SPIN2 ||
+				    rev == RL_HWREV_8168CP)
 					ifp->if_hwassist |= CSUM_TCP | CSUM_UDP;
 				else
 					ifp->if_hwassist |= RE_CSUM_FEATURES;