Also: http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/67823 It was send by my friend, and his server runs with this patch. I guess that it should be idential to what you send here. If not you may contact him and ask to try your one.
By the way, I thought that should be better solution. For example, why not to tag packets if they already checksumed or not?
rik
Bruce M Simpson:
Here is a somewhat improved patch for tweaking the behaviour of the bridge code with respect to disabling the hardware-assist-checksum features of driver instances which are members of the bridge.
I don't make use of the bridge code so I'd appreciate it if others who do could test this patch.
To disable *all* capabilities, setting net.link.ether.bridge.hwassmask to 0 should suffice.
Regards,
BMS
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This patch implements a sysctl MIB variable, net.link.ether.bridge.hwassmask, which may be used to specify a bitmask which is applied to each member interface of a bridge to selectively disable interface hardware assist capabilities, and provides finer run-time control over such behaviour.
Index: bridge.c =================================================================== RCS file: /home/ncvs/src/sys/net/bridge.c,v retrieving revision 1.79 diff -u -p -r1.79 bridge.c --- bridge.c 15 Jun 2004 23:57:41 -0000 1.79 +++ bridge.c 3 Jul 2004 17:33:47 -0000 @@ -204,6 +204,10 @@ SYSCTL_NODE(_net_link_ether, OID_AUTO, b static char bridge_version[] = "031224"; SYSCTL_STRING(_net_link_ether_bridge, OID_AUTO, version, CTLFLAG_RD, bridge_version, 0, "software version"); +static u_long bridge_hwassmask = 0xFFFFFFFFUL; +SYSCTL_ULONG(_net_link_ether_bridge, OID_AUTO, hwassmask, CTLFLAG_RW, + &bridge_hwassmask, 0, + "Mask to apply to if_hwassist field for bridge interfaces");
#define BRIDGE_DEBUG #ifdef BRIDGE_DEBUG @@ -391,6 +395,7 @@ bridge_off(void)
if ( b->flags & IFF_BDG_PROMISC ) { ifpromisc(ifp, 0); + ifp->if_hwassist = b->hwassist; b->flags &= ~(IFF_BDG_PROMISC|IFF_MUTE) ; DPRINTF(("%s: %s promisc OFF if_flags 0x%x " "bdg_flags 0x%x\n", __func__, ifp->if_xname, @@ -433,6 +438,8 @@ bridge_on(void) if_up(ifp); } if ( !(b->flags & IFF_BDG_PROMISC) ) { + b->hwassist = ifp->if_hwassist; + ifp->if_hwassist &= bridge_hwassmask; (void) ifpromisc(ifp, 1); b->flags |= IFF_BDG_PROMISC ; DPRINTF(("%s: %s promisc ON if_flags 0x%x bdg_flags 0x%x\n", Index: bridge.h =================================================================== RCS file: /home/ncvs/src/sys/net/bridge.h,v retrieving revision 1.12 diff -u -p -r1.12 bridge.h --- bridge.h 15 Nov 2002 00:00:14 -0000 1.12 +++ bridge.h 3 Jul 2004 17:26:44 -0000 @@ -48,6 +48,7 @@ struct bdg_softc { #define IFF_MUTE 0x0002 /* mute this if for bridging. */ #define IFF_USED 0x0004 /* use this if for bridging. */ struct cluster_softc *cluster; + u_long hwassist; /* saved ifp->if_hwassist field */ } ;
extern struct bdg_softc *ifp2sc;
------------------------------------------------------------------------
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