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Date: Thu, 5 May 2016 15:34:53 -0700
From: Tom Herbert <tom@...bertland.com>
To: Alexander Duyck <aduyck@...antis.com>
Cc: Linux Kernel Network Developers <netdev@...r.kernel.org>,
michael.chan@...adcom.com,
Alexander Duyck <alexander.duyck@...il.com>
Subject: Re: [RFC PATCH] gso: Replace SKB_GSO_IPIP and SKB_GSO_SIT with outer
L3 types
I'm testing a similar change, it seems like a good idea.
On Thu, May 5, 2016 at 3:12 PM, Alexander Duyck <aduyck@...antis.com> wrote:
> This patch removes SKB_GSO_IPIP and SKB_GSO_SIT and instead replaces them
> with SKB_GSO_IPIPV4 and SKB_GSO_IPIPV6. The idea here is that SKB_GSO_IPIP
> and SKB_GSO_SIT are actually redundant as TCPV4 and TCPV6 were already
> representing the inner network header type. By reporting what the outer
> network header type is we should be able to represent all applicable cases
> as SKB_GSO_IPIPV4 can be combined with SKB_GSO_TCPV4 or SKB_GSO_TCPV6 and
> it should then be possible to describe all possible IP in IP tunnel
> combinations for inner and outer v4/v6.
>
> I played it safe with the Broadcom drivers and just merged GSO_IPIP and
> GSO_SIT into GSO_IPIPV4, if the drivers do support outer IPv6 tunnels I can
> either update this patch to add them in, or can add a patch to enable that
> later.
>
> In the case of the Intel drivers I know they should be able to handle IPv6
> outer headers so I went ahead and enabled GSO_IPIPV6 for them.
>
> This patch is meant to be applied after "gso: Remove arbitrary checks for
> unsupported GSO" which can be found at:
> https://patchwork.ozlabs.org/patch/618757/
>
> Signed-off-by: Alexander Duyck <aduyck@...antis.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 | 4 ++--
> drivers/net/ethernet/intel/i40e/i40e_txrx.c | 4 ++--
> drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 4 ++--
> drivers/net/ethernet/intel/i40evf/i40evf_main.c | 4 ++--
> drivers/net/ethernet/intel/igb/igb_main.c | 4 ++--
> drivers/net/ethernet/intel/igbvf/netdev.c | 4 ++--
> drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 4 ++--
> drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 4 ++--
> 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 | 16 +++++++++++-----
> net/ipv4/ipip.c | 2 +-
> net/ipv6/ip6_offload.c | 7 +++++--
> net/ipv6/sit.c | 4 ++--
> net/netfilter/ipvs/ip_vs_xmit.c | 14 +++-----------
> 19 files changed, 54 insertions(+), 54 deletions(-)
>
> diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
> index d465bd721146..fbc713094611 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_IPIPV4;
I prefer using IPXIP4 and IPXIP6, especially to be clear that the
inner protocol is either IP version.
> 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_IPIPV4 |
> 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 fd85b6dd4a6e..b3821fbf8e1b 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
> @@ -6218,7 +6218,7 @@ 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_IPIPV4 |
> 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;
> @@ -6228,7 +6228,7 @@ 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_IPIPV4 |
> 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 1cd0ebf7520a..bf1d31c4e310 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_main.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
> @@ -9083,8 +9083,8 @@ 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_IPIPV4 |
> + NETIF_F_GSO_IPIPV6 |
> 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 36a34f7191e3..180d4a889c69 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
> @@ -2302,8 +2302,8 @@ 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_IPIPV4 |
> + SKB_GSO_IPIPV6 |
> 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 fd7dae46c5d8..e2630c663cfb 100644
> --- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
> +++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
> @@ -1559,8 +1559,8 @@ 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_IPIPV4 |
> + SKB_GSO_IPIPV6 |
> 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 642bb45ed906..3a72568d8175 100644
> --- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c
> +++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c
> @@ -2230,8 +2230,8 @@ 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_IPIPV4 |
> + NETIF_F_GSO_IPIPV6 |
> NETIF_F_GSO_UDP_TUNNEL |
> NETIF_F_GSO_UDP_TUNNEL_CSUM |
> NETIF_F_GSO_PARTIAL |
> diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
> index 21727692bef6..1ba2213ce5d5 100644
> --- a/drivers/net/ethernet/intel/igb/igb_main.c
> +++ b/drivers/net/ethernet/intel/igb/igb_main.c
> @@ -2418,8 +2418,8 @@ static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>
> #define IGB_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \
> NETIF_F_GSO_GRE_CSUM | \
> - NETIF_F_GSO_IPIP | \
> - NETIF_F_GSO_SIT | \
> + NETIF_F_GSO_IPIPV4 | \
> + NETIF_F_GSO_IPIPV6 | \
> NETIF_F_GSO_UDP_TUNNEL | \
> NETIF_F_GSO_UDP_TUNNEL_CSUM)
>
> diff --git a/drivers/net/ethernet/intel/igbvf/netdev.c b/drivers/net/ethernet/intel/igbvf/netdev.c
> index 322a2d7828a5..de1827983096 100644
> --- a/drivers/net/ethernet/intel/igbvf/netdev.c
> +++ b/drivers/net/ethernet/intel/igbvf/netdev.c
> @@ -2763,8 +2763,8 @@ static int igbvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>
> #define IGBVF_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \
> NETIF_F_GSO_GRE_CSUM | \
> - NETIF_F_GSO_IPIP | \
> - NETIF_F_GSO_SIT | \
> + NETIF_F_GSO_IPIPV4 | \
> + NETIF_F_GSO_IPIPV6 | \
> NETIF_F_GSO_UDP_TUNNEL | \
> NETIF_F_GSO_UDP_TUNNEL_CSUM)
>
> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> index d08fbcfb9417..9180361a909c 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> @@ -9482,8 +9482,8 @@ 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_IPIPV4 | \
> + NETIF_F_GSO_IPIPV6 | \
> 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 5e348b125090..622f456ec41e 100644
> --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> @@ -4062,8 +4062,8 @@ 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_IPIPV4 | \
> + NETIF_F_GSO_IPIPV6 | \
> 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 bc8736266749..f10248df9705 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_IPIPV4_BIT, /* ... IP in IPv4 tunnel with TSO */
> + NETIF_F_GSO_IPIPV6_BIT, /* ... IP in IPv6 tunnel 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_IPIPV4 __NETIF_F(GSO_IPIPV4)
> +#define NETIF_F_GSO_IPIPV6 __NETIF_F(GSO_IPIPV6)
> #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_IPIPV4 | \
> + NETIF_F_GSO_IPIPV6 | \
> NETIF_F_GSO_UDP_TUNNEL | \
> NETIF_F_GSO_UDP_TUNNEL_CSUM)
>
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index 63580e6d0df4..d9d05d6b5849 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_IPIPV4 != (NETIF_F_GSO_IPIPV4 >> NETIF_F_GSO_SHIFT));
> + BUILD_BUG_ON(SKB_GSO_IPIPV6 != (NETIF_F_GSO_IPIPV6 >> 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 c413c588a24f..6186a6446d1c 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_IPIPV4 = 1 << 9,
>
> - SKB_GSO_SIT = 1 << 10,
> + SKB_GSO_IPIPV6 = 1 << 10,
>
> SKB_GSO_UDP_TUNNEL = 1 << 11,
>
> diff --git a/net/core/ethtool.c b/net/core/ethtool.c
> index bdb4013581b1..8771dafe93ec 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_IPIPV4_BIT] = "tx-ipip4-segmentation",
> + [NETIF_F_GSO_IPIPV6_BIT] = "tx-ipip6-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 7f08d4525981..c62230f1b16b 100644
> --- a/net/ipv4/af_inet.c
> +++ b/net/ipv4/af_inet.c
> @@ -1459,20 +1459,25 @@ static int inet_gro_complete(struct sk_buff *skb, int nhoff)
>
> if (skb->encapsulation)
> skb_set_inner_network_header(skb, nhoff);
> + else
> + skb_set_network_header(skb, nhoff);
This seems like an unrelated change.
>
> csum_replace2(&iph->check, iph->tot_len, newlen);
> iph->tot_len = newlen;
>
> rcu_read_lock();
> - ops = rcu_dereference(inet_offloads[proto]);
> - if (WARN_ON(!ops || !ops->callbacks.gro_complete))
> - goto out_unlock;
>
> /* Only need to add sizeof(*iph) to get to the next hdr below
> * because any hdr with option will have been flushed in
> * inet_gro_receive().
> */
> - err = ops->callbacks.gro_complete(skb, nhoff + sizeof(*iph));
> + nhoff += sizeof(*iph);
> +
> + ops = rcu_dereference(inet_offloads[proto]);
> + if (WARN_ON(!ops || !ops->callbacks.gro_complete))
> + goto out_unlock;
> +
> + err = ops->callbacks.gro_complete(skb, nhoff);
Why this change?
>
> out_unlock:
> rcu_read_unlock();
> @@ -1483,7 +1488,8 @@ 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 = (ip_hdr(skb)->version == 4) ?
> + SKB_GSO_IPIPV4 : SKB_GSO_IPIPV6;
I don't think this is necessary. IPIP means IPv4 over IPv4, IPv4 over
IPv6 can have its own gro_complete
> return inet_gro_complete(skb, nhoff);
> }
>
> diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
> index 92827483ee3d..16aa07688955 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_IPIPV4))
> 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 9ad743b2c624..b68a8a88f498 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_IPIPV4 | SKB_GSO_IPIPV6)))
> udpfrag = proto == IPPROTO_UDP && encap;
> else
> udpfrag = proto == IPPROTO_UDP && !skb->encapsulation;
> @@ -274,6 +274,8 @@ static int ipv6_gro_complete(struct sk_buff *skb, int nhoff)
>
> if (skb->encapsulation)
> skb_set_inner_network_header(skb, nhoff);
> + else
> + skb_set_network_header(skb, nhoff);
Separate patch maybe?
>
> iph->payload_len = htons(skb->len - nhoff - sizeof(*iph));
>
> @@ -294,7 +296,8 @@ 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 = (ipv6_hdr(skb)->version == 6) ?
> + SKB_GSO_IPIPV6 : SKB_GSO_IPIPV4;
Can have separate gro_complete for ip6ip6 also
> return ipv6_gro_complete(skb, nhoff);
> }
>
> diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
> index a13d8c114ccb..3945df11efaf 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_IPIPV4)) {
> 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_IPIPV4))
> 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 6d19d2eeaa60..c2c8732ed652 100644
> --- a/net/netfilter/ipvs/ip_vs_xmit.c
> +++ b/net/netfilter/ipvs/ip_vs_xmit.c
> @@ -932,17 +932,9 @@ 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;
> - }
> -
> - /* GSO: we need to provide proper SKB_GSO_ value for IPv6:
> - * SKB_GSO_SIT/IPV6
> - */
> - return 0;
> + if (encaps_af == AF_INET)
> + return SKB_GSO_IPIPV4;
> + return SKB_GSO_IPIPV6;
> }
>
> /*
>
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