Author: arybchik Date: Fri May 15 06:49:43 2015 New Revision: 282941 URL: https://svnweb.freebsd.org/changeset/base/282941
Log: sfxge: do not change CSUM_TSO when IFCAP_TSOx is changed It is simply not required since the kernel checks corresponding IFCAP_TSOx capability and CSUM_TSO in hw-assisted offloads. Note that CSUM_TSO is two bits (CSUM_IP_TSO|CSUM_IP6_TSO) and both bits are set in IPv4 and IPv6 mbufs. Reviewed by: gnn Sponsored by: Solarflare Communications, Inc. MFC after: 2 days Differential Revision: https://reviews.freebsd.org/D2546 Modified: head/sys/dev/sfxge/sfxge.c Modified: head/sys/dev/sfxge/sfxge.c ============================================================================== --- head/sys/dev/sfxge/sfxge.c Fri May 15 06:48:36 2015 (r282940) +++ head/sys/dev/sfxge/sfxge.c Fri May 15 06:49:43 2015 (r282941) @@ -282,10 +282,14 @@ sfxge_if_ioctl(struct ifnet *ifp, unsign ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6); else ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6); - if (ifp->if_capenable & IFCAP_TSO) - ifp->if_hwassist |= CSUM_TSO; - else - ifp->if_hwassist &= ~CSUM_TSO; + + /* + * The kernel takes both IFCAP_TSOx and CSUM_TSO into + * account before using TSO. So, we do not touch + * checksum flags when IFCAP_TSOx is modified. + * Note that CSUM_TSO is (CSUM_IP_TSO|CSUM_IP6_TSO), + * but both bits are set in IPv4 and IPv6 mbufs. + */ SFXGE_ADAPTER_UNLOCK(sc); break; _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
