Author: arybchik Date: Mon May 18 06:04:20 2015 New Revision: 283050 URL: https://svnweb.freebsd.org/changeset/base/283050
Log: sfxge: automatically turn off TSO when Tx checksum offload is disabled Also return error if TSO is requested without Tx checksum offload. Reviewed by: gnn Sponsored by: Solarflare Communications, Inc. MFC after: 2 days Differential Revision: https://reviews.freebsd.org/D2564 Modified: head/sys/dev/sfxge/sfxge.c Modified: head/sys/dev/sfxge/sfxge.c ============================================================================== --- head/sys/dev/sfxge/sfxge.c Mon May 18 06:03:21 2015 (r283049) +++ head/sys/dev/sfxge/sfxge.c Mon May 18 06:04:20 2015 (r283050) @@ -60,8 +60,9 @@ __FBSDID("$FreeBSD$"); #include "sfxge_version.h" #define SFXGE_CAP (IFCAP_VLAN_MTU | IFCAP_VLAN_HWCSUM | \ - IFCAP_RXCSUM | IFCAP_TXCSUM | IFCAP_TSO | \ + IFCAP_RXCSUM | IFCAP_TXCSUM | \ IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6 | \ + IFCAP_TSO4 | IFCAP_TSO6 | \ IFCAP_JUMBO_MTU | IFCAP_LRO | \ IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWSTATS) #define SFXGE_CAP_ENABLE SFXGE_CAP @@ -283,14 +284,42 @@ sfxge_if_ioctl(struct ifnet *ifp, unsign break; } - if (reqcap & IFCAP_TXCSUM) + /* Check request before any changes */ + if ((capchg_mask & IFCAP_TSO4) && + (reqcap & (IFCAP_TSO4 | IFCAP_TXCSUM)) == IFCAP_TSO4) { + error = EAGAIN; + SFXGE_ADAPTER_UNLOCK(sc); + if_printf(ifp, "enable txcsum before tso4\n"); + break; + } + if ((capchg_mask & IFCAP_TSO6) && + (reqcap & (IFCAP_TSO6 | IFCAP_TXCSUM_IPV6)) == IFCAP_TSO6) { + error = EAGAIN; + SFXGE_ADAPTER_UNLOCK(sc); + if_printf(ifp, "enable txcsum6 before tso6\n"); + break; + } + + if (reqcap & IFCAP_TXCSUM) { ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP); - else + } else { ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP); - if (reqcap & IFCAP_TXCSUM_IPV6) + if (reqcap & IFCAP_TSO4) { + reqcap &= ~IFCAP_TSO4; + if_printf(ifp, + "tso4 disabled due to -txcsum\n"); + } + } + if (reqcap & IFCAP_TXCSUM_IPV6) { ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6); - else + } else { ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6); + if (reqcap & IFCAP_TSO6) { + reqcap &= ~IFCAP_TSO6; + if_printf(ifp, + "tso6 disabled due to -txcsum6\n"); + } + } /* * The kernel takes both IFCAP_TSOx and CSUM_TSO into _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
