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Date: Sat, 14 Jun 2014 23:23:52 -0700 (PDT) From: Tom Herbert <therbert@...gle.com> To: davem@...emloft.net, netdev@...r.kernel.org cc: joseph.gasparakis@...el.com Subject: [PATCH v2 1/5] net: Fix GSO constants to match NETIF flags Joseph Gasparakis reported that VXLAN GSO offload stopped working with i40e device after recent UDP changes. The problem is that the SKB_GSO_* bits are out of sync with the corresponding NETIF flags. This patch fixes that. Also, we add BUILD_BUG_ONs in net_gso_ok for several GSO constants that were missing to avoid the problem in the future. Reported-by: Joseph Gasparakis <joseph.gasparakis@...el.com> Signed-off-by: Tom Herbert <therbert@...gle.com> --- include/linux/netdev_features.h | 1 + include/linux/netdevice.h | 7 +++++++ include/linux/skbuff.h | 11 ++++++----- 3 files changed, 14 insertions(+), 5 deletions(-) diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index e5a5894..d99800c 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -117,6 +117,7 @@ enum { #define NETIF_F_GSO_IPIP __NETIF_F(GSO_IPIP) #define NETIF_F_GSO_SIT __NETIF_F(GSO_SIT) #define NETIF_F_GSO_UDP_TUNNEL __NETIF_F(GSO_UDP_TUNNEL) +#define NETIF_F_GSO_UDP_TUNNEL_CSUM __NETIF_F(GSO_UDP_TUNNEL_CSUM) #define NETIF_F_GSO_MPLS __NETIF_F(GSO_MPLS) #define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER) #define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 774e539..80f1e41 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3305,6 +3305,13 @@ static inline bool net_gso_ok(netdev_features_t features, int gso_type) BUILD_BUG_ON(SKB_GSO_TCP_ECN != (NETIF_F_TSO_ECN >> NETIF_F_GSO_SHIFT)); BUILD_BUG_ON(SKB_GSO_TCPV6 != (NETIF_F_TSO6 >> NETIF_F_GSO_SHIFT)); BUILD_BUG_ON(SKB_GSO_FCOE != (NETIF_F_FSO >> NETIF_F_GSO_SHIFT)); + BUILD_BUG_ON(SKB_GSO_GRE != (NETIF_F_GSO_GRE >> NETIF_F_GSO_SHIFT)); + BUILD_BUG_ON(SKB_GSO_GRE_CSUM != (NETIF_F_GSO_GRE_CSUM >> NETIF_F_GSO_SHIFT)); + BUILD_BUG_ON(SKB_GSO_IPIP != (NETIF_F_GSO_IPIP >> NETIF_F_GSO_SHIFT)); + BUILD_BUG_ON(SKB_GSO_SIT != (NETIF_F_GSO_SIT >> NETIF_F_GSO_SHIFT)); + BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL != (NETIF_F_GSO_UDP_TUNNEL >> NETIF_F_GSO_SHIFT)); + BUILD_BUG_ON(SKB_GSO_UDP_TUNNEL_CSUM != (NETIF_F_GSO_UDP_TUNNEL_CSUM >> NETIF_F_GSO_SHIFT)); + BUILD_BUG_ON(SKB_GSO_MPLS != (NETIF_F_GSO_MPLS >> NETIF_F_GSO_SHIFT)); return (features & feature) == feature; } diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 5b5cd31..e13ed90 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -338,17 +338,18 @@ enum { SKB_GSO_GRE = 1 << 6, - SKB_GSO_IPIP = 1 << 7, + SKB_GSO_GRE_CSUM = 1 << 7, - SKB_GSO_SIT = 1 << 8, + SKB_GSO_IPIP = 1 << 8, - SKB_GSO_UDP_TUNNEL = 1 << 9, + SKB_GSO_SIT = 1 << 9, - SKB_GSO_MPLS = 1 << 10, + SKB_GSO_UDP_TUNNEL = 1 << 10, SKB_GSO_UDP_TUNNEL_CSUM = 1 << 11, - SKB_GSO_GRE_CSUM = 1 << 12, + SKB_GSO_MPLS = 1 << 12, + }; #if BITS_PER_LONG > 32 -- 2.0.0.526.g5318336 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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