This patch defines two new GSO definitions SKB_GSO_IPXIP4 and
SKB_GSO_IPXIP6 along with corresponding NETIF_F_GSO_IPXIP4 and
NETIF_F_GSO_IPXIP6. These are used to described IP in IP
tunnel and what the outer protocol is. The inner protocol
can be deduced from other GSO types (e.g. SKB_GSO_TCPV4 and
SKB_GSO_TCPV6). The GSO types of SKB_GSO_IPIP and SKB_GSO_SIT
are removed (these are both instances of SKB_GSO_IPXIP4).
SKB_GSO_IPXIP6 will be used when support for GSO with IP
encapsulation over IPv6 is added.

Signed-off-by: Tom Herbert <t...@herbertland.com>
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c  |  5 ++---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c         |  4 ++--
 drivers/net/ethernet/intel/i40e/i40e_main.c       |  3 +--
 drivers/net/ethernet/intel/i40e/i40e_txrx.c       |  3 +--
 drivers/net/ethernet/intel/i40evf/i40e_txrx.c     |  3 +--
 drivers/net/ethernet/intel/i40evf/i40evf_main.c   |  3 +--
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c     |  3 +--
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |  3 +--
 include/linux/netdev_features.h                   | 12 ++++++------
 include/linux/netdevice.h                         |  4 ++--
 include/linux/skbuff.h                            |  4 ++--
 net/core/ethtool.c                                |  4 ++--
 net/ipv4/af_inet.c                                |  2 +-
 net/ipv4/ipip.c                                   |  2 +-
 net/ipv6/ip6_offload.c                            |  4 ++--
 net/ipv6/sit.c                                    |  4 ++--
 net/netfilter/ipvs/ip_vs_xmit.c                   | 17 +++++++----------
 17 files changed, 35 insertions(+), 45 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c 
b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index d465bd7..0a5b770 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -13259,12 +13259,11 @@ static int bnx2x_init_dev(struct bnx2x *bp, struct 
pci_dev *pdev,
                NETIF_F_RXHASH | NETIF_F_HW_VLAN_CTAG_TX;
        if (!chip_is_e1x) {
                dev->hw_features |= NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL |
-                                   NETIF_F_GSO_IPIP | NETIF_F_GSO_SIT;
+                                   NETIF_F_GSO_IPXIP4;
                dev->hw_enc_features =
                        NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SG |
                        NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6 |
-                       NETIF_F_GSO_IPIP |
-                       NETIF_F_GSO_SIT |
+                       NETIF_F_GSO_IPXIP4 |
                        NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL;
        }
 
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c 
b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 6a5a717..85adcb0 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -6233,7 +6233,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const 
struct pci_device_id *ent)
        dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SG |
                           NETIF_F_TSO | NETIF_F_TSO6 |
                           NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_GRE |
-                          NETIF_F_GSO_IPIP | NETIF_F_GSO_SIT |
+                          NETIF_F_GSO_IPXIP4 |
                           NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_GSO_GRE_CSUM |
                           NETIF_F_GSO_PARTIAL | NETIF_F_RXHASH |
                           NETIF_F_RXCSUM | NETIF_F_LRO | NETIF_F_GRO;
@@ -6243,7 +6243,7 @@ static int bnxt_init_one(struct pci_dev *pdev, const 
struct pci_device_id *ent)
                        NETIF_F_TSO | NETIF_F_TSO6 |
                        NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_GRE |
                        NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_GSO_GRE_CSUM |
-                       NETIF_F_GSO_IPIP | NETIF_F_GSO_SIT |
+                       NETIF_F_GSO_IPXIP4;
                        NETIF_F_GSO_PARTIAL;
        dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM |
                                    NETIF_F_GSO_GRE_CSUM;
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c 
b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 46a3a67..e4284b5 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -9082,8 +9082,7 @@ static int i40e_config_netdev(struct i40e_vsi *vsi)
                                   NETIF_F_TSO6                 |
                                   NETIF_F_GSO_GRE              |
                                   NETIF_F_GSO_GRE_CSUM         |
-                                  NETIF_F_GSO_IPIP             |
-                                  NETIF_F_GSO_SIT              |
+                                  NETIF_F_GSO_IPXIP4           |
                                   NETIF_F_GSO_UDP_TUNNEL       |
                                   NETIF_F_GSO_UDP_TUNNEL_CSUM  |
                                   NETIF_F_GSO_PARTIAL          |
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c 
b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index b0edffe..5f3f97b 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -2284,8 +2284,7 @@ static int i40e_tso(struct sk_buff *skb, u8 *hdr_len, u64 
*cd_type_cmd_tso_mss)
 
        if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE |
                                         SKB_GSO_GRE_CSUM |
-                                        SKB_GSO_IPIP |
-                                        SKB_GSO_SIT |
+                                        SKB_GSO_IPXIP4 |
                                         SKB_GSO_UDP_TUNNEL |
                                         SKB_GSO_UDP_TUNNEL_CSUM)) {
                if (!(skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) &&
diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c 
b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
index fd7dae46..2bbbbd0 100644
--- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
@@ -1559,8 +1559,7 @@ static int i40e_tso(struct sk_buff *skb, u8 *hdr_len, u64 
*cd_type_cmd_tso_mss)
 
        if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE |
                                         SKB_GSO_GRE_CSUM |
-                                        SKB_GSO_IPIP |
-                                        SKB_GSO_SIT |
+                                        SKB_GSO_IPXIP4 |
                                         SKB_GSO_UDP_TUNNEL |
                                         SKB_GSO_UDP_TUNNEL_CSUM)) {
                if (!(skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) &&
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_main.c 
b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
index b548dbe..32cdf28 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
@@ -2217,8 +2217,7 @@ int i40evf_process_config(struct i40evf_adapter *adapter)
                                   NETIF_F_TSO6                 |
                                   NETIF_F_GSO_GRE              |
                                   NETIF_F_GSO_GRE_CSUM         |
-                                  NETIF_F_GSO_IPIP             |
-                                  NETIF_F_GSO_SIT              |
+                                  NETIF_F_GSO_IPXIP4           |
                                   NETIF_F_GSO_UDP_TUNNEL       |
                                   NETIF_F_GSO_UDP_TUNNEL_CSUM  |
                                   NETIF_F_GSO_PARTIAL          |
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index d08fbcf..28e3b5a 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -9482,8 +9482,7 @@ skip_sriov:
 
 #define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \
                                    NETIF_F_GSO_GRE_CSUM | \
-                                   NETIF_F_GSO_IPIP | \
-                                   NETIF_F_GSO_SIT | \
+                                   NETIF_F_GSO_IPXIP4 | \
                                    NETIF_F_GSO_UDP_TUNNEL | \
                                    NETIF_F_GSO_UDP_TUNNEL_CSUM)
 
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c 
b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 5e348b1..d86e511 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -4062,8 +4062,7 @@ static int ixgbevf_probe(struct pci_dev *pdev, const 
struct pci_device_id *ent)
 
 #define IXGBEVF_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \
                                      NETIF_F_GSO_GRE_CSUM | \
-                                     NETIF_F_GSO_IPIP | \
-                                     NETIF_F_GSO_SIT | \
+                                     NETIF_F_GSO_IPXIP4 | \
                                      NETIF_F_GSO_UDP_TUNNEL | \
                                      NETIF_F_GSO_UDP_TUNNEL_CSUM)
 
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index bc87362..aa7b240 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -44,8 +44,8 @@ enum {
        NETIF_F_FSO_BIT,                /* ... FCoE segmentation */
        NETIF_F_GSO_GRE_BIT,            /* ... GRE with TSO */
        NETIF_F_GSO_GRE_CSUM_BIT,       /* ... GRE with csum with TSO */
-       NETIF_F_GSO_IPIP_BIT,           /* ... IPIP tunnel with TSO */
-       NETIF_F_GSO_SIT_BIT,            /* ... SIT tunnel with TSO */
+       NETIF_F_GSO_IPXIP4_BIT,         /* ... IP4 or IP6 over IP4 with TSO */
+       NETIF_F_GSO_IPXIP6_BIT,         /* ... IP4 or IP6 over IP6 with TSO */
        NETIF_F_GSO_UDP_TUNNEL_BIT,     /* ... UDP TUNNEL with TSO */
        NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT,/* ... UDP TUNNEL with TSO & CSUM */
        NETIF_F_GSO_PARTIAL_BIT,        /* ... Only segment inner-most L4
@@ -121,8 +121,8 @@ enum {
 #define NETIF_F_RXALL          __NETIF_F(RXALL)
 #define NETIF_F_GSO_GRE                __NETIF_F(GSO_GRE)
 #define NETIF_F_GSO_GRE_CSUM   __NETIF_F(GSO_GRE_CSUM)
-#define NETIF_F_GSO_IPIP       __NETIF_F(GSO_IPIP)
-#define NETIF_F_GSO_SIT                __NETIF_F(GSO_SIT)
+#define NETIF_F_GSO_IPXIP4     __NETIF_F(GSO_IPXIP4)
+#define NETIF_F_GSO_IPXIP6     __NETIF_F(GSO_IPXIP6)
 #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_TSO_MANGLEID   __NETIF_F(TSO_MANGLEID)
@@ -200,8 +200,8 @@ enum {
 
 #define NETIF_F_GSO_ENCAP_ALL  (NETIF_F_GSO_GRE |                      \
                                 NETIF_F_GSO_GRE_CSUM |                 \
-                                NETIF_F_GSO_IPIP |                     \
-                                NETIF_F_GSO_SIT |                      \
+                                NETIF_F_GSO_IPXIP4 |                   \
+                                NETIF_F_GSO_IPXIP6 |                   \
                                 NETIF_F_GSO_UDP_TUNNEL |               \
                                 NETIF_F_GSO_UDP_TUNNEL_CSUM)
 
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 63580e6..8b1eedc 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4005,8 +4005,8 @@ static inline bool net_gso_ok(netdev_features_t features, 
int gso_type)
        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_IPXIP4  != (NETIF_F_GSO_IPXIP4 >> 
NETIF_F_GSO_SHIFT));
+       BUILD_BUG_ON(SKB_GSO_IPXIP6  != (NETIF_F_GSO_IPXIP6 >> 
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_PARTIAL != (NETIF_F_GSO_PARTIAL >> 
NETIF_F_GSO_SHIFT));
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index c413c58..65968a9 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -471,9 +471,9 @@ enum {
 
        SKB_GSO_GRE_CSUM = 1 << 8,
 
-       SKB_GSO_IPIP = 1 << 9,
+       SKB_GSO_IPXIP4 = 1 << 9,
 
-       SKB_GSO_SIT = 1 << 10,
+       SKB_GSO_IPXIP6 = 1 << 10,
 
        SKB_GSO_UDP_TUNNEL = 1 << 11,
 
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index bdb4013..f403481 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -84,8 +84,8 @@ static const char 
netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN]
        [NETIF_F_FSO_BIT] =              "tx-fcoe-segmentation",
        [NETIF_F_GSO_GRE_BIT] =          "tx-gre-segmentation",
        [NETIF_F_GSO_GRE_CSUM_BIT] =     "tx-gre-csum-segmentation",
-       [NETIF_F_GSO_IPIP_BIT] =         "tx-ipip-segmentation",
-       [NETIF_F_GSO_SIT_BIT] =          "tx-sit-segmentation",
+       [NETIF_F_GSO_IPXIP4_BIT] =       "tx-ipxip4-segmentation",
+       [NETIF_F_GSO_IPXIP6_BIT] =       "tx-ipxip6-segmentation",
        [NETIF_F_GSO_UDP_TUNNEL_BIT] =   "tx-udp_tnl-segmentation",
        [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
        [NETIF_F_GSO_PARTIAL_BIT] =      "tx-gso-partial",
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 7f08d45..25040b1 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1483,7 +1483,7 @@ out_unlock:
 static int ipip_gro_complete(struct sk_buff *skb, int nhoff)
 {
        skb->encapsulation = 1;
-       skb_shinfo(skb)->gso_type |= SKB_GSO_IPIP;
+       skb_shinfo(skb)->gso_type |= SKB_GSO_IPXIP4;
        return inet_gro_complete(skb, nhoff);
 }
 
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 9282748..9783701 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -219,7 +219,7 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, 
struct net_device *dev)
        if (unlikely(skb->protocol != htons(ETH_P_IP)))
                goto tx_error;
 
-       if (iptunnel_handle_offloads(skb, SKB_GSO_IPIP))
+       if (iptunnel_handle_offloads(skb, SKB_GSO_IPXIP4))
                goto tx_error;
 
        skb_set_inner_ipproto(skb, IPPROTO_IPIP);
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index 9ad743b..787e55f 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -86,7 +86,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
        proto = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
 
        if (skb->encapsulation &&
-           skb_shinfo(skb)->gso_type & (SKB_GSO_SIT|SKB_GSO_IPIP))
+           skb_shinfo(skb)->gso_type & (SKB_GSO_IPXIP4 | SKB_GSO_IPXIP6))
                udpfrag = proto == IPPROTO_UDP && encap;
        else
                udpfrag = proto == IPPROTO_UDP && !skb->encapsulation;
@@ -294,7 +294,7 @@ out_unlock:
 static int sit_gro_complete(struct sk_buff *skb, int nhoff)
 {
        skb->encapsulation = 1;
-       skb_shinfo(skb)->gso_type |= SKB_GSO_SIT;
+       skb_shinfo(skb)->gso_type |= SKB_GSO_IPXIP4;
        return ipv6_gro_complete(skb, nhoff);
 }
 
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index a13d8c1..0a5a255 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -913,7 +913,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
                goto tx_error;
        }
 
-       if (iptunnel_handle_offloads(skb, SKB_GSO_SIT)) {
+       if (iptunnel_handle_offloads(skb, SKB_GSO_IPXIP4)) {
                ip_rt_put(rt);
                goto tx_error;
        }
@@ -1000,7 +1000,7 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, 
struct net_device *dev)
        struct ip_tunnel *tunnel = netdev_priv(dev);
        const struct iphdr  *tiph = &tunnel->parms.iph;
 
-       if (iptunnel_handle_offloads(skb, SKB_GSO_IPIP))
+       if (iptunnel_handle_offloads(skb, SKB_GSO_IPXIP4))
                goto tx_error;
 
        skb_set_inner_ipproto(skb, IPPROTO_IPIP);
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 6d19d2e..01d3d89 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -932,17 +932,14 @@ error:
 
 static inline int __tun_gso_type_mask(int encaps_af, int orig_af)
 {
-       if (encaps_af == AF_INET) {
-               if (orig_af == AF_INET)
-                       return SKB_GSO_IPIP;
-
-               return SKB_GSO_SIT;
+       switch (encaps_af) {
+       case AF_INET:
+               return SKB_GSO_IPXIP4;
+       case AF_INET6:
+               return SKB_GSO_IPXIP6;
+       default:
+               return 0;
        }
-
-       /* GSO: we need to provide proper SKB_GSO_ value for IPv6:
-        * SKB_GSO_SIT/IPV6
-        */
-       return 0;
 }
 
 /*
-- 
2.8.0.rc2

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