Stephen Hemminger wrote: > Here is a proposed change to address hardware that can do IPV6 checksum > offload, but doesn't truly do generic hw checksumming. The bnx2 and tg3 > are like this for some revisions, and upcoming Marvell 88e8071 is similar. > > > --- a/include/linux/netdevice.h 2007-05-30 08:26:18.000000000 -0700 > +++ b/include/linux/netdevice.h 2007-05-30 08:30:20.000000000 -0700 > @@ -314,9 +314,10 @@ struct net_device > /* Net device features */ > unsigned long features; > #define NETIF_F_SG 1 /* Scatter/gather IO. */ > -#define NETIF_F_IP_CSUM 2 /* Can checksum only TCP/UDP > over IPv4. */ > +#define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over > IPv4. */ > #define NETIF_F_NO_CSUM 4 /* Does not require checksum. > F.e. loopack. */ > #define NETIF_F_HW_CSUM 8 /* Can checksum all the > packets. */ > +#define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ > #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ > #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ > #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ > @@ -339,7 +340,8 @@ struct net_device > #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) > > #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) > -#define NETIF_F_ALL_CSUM (NETIF_F_IP_CSUM | NETIF_F_GEN_CSUM) > +#define NETIF_F_ALL_CSUM (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM \ > + | NETIF_F_GEN_CSUM)
This might confuse some of the existing IPv4 code that checks for NETIF_F_ALL_CSUM if we ever get a device that has NETIF_F_IPV6_CSUM but not NETIF_F_IP_CSUM. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
