From 54bc9bac307861aea5abb747cb58bf0275f2175f Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Mon, 29 Sep 2014 20:22:32 -0700 Subject: [PATCH] gre: Set inner protocol in v4 and v6 GRE transmit Call skb_set_inner_protocol to set inner Ethernet protocol to protocol being encapsulation by GRE before tunnel_xmit. This is needed for GSO if UDP encapsulation (fou) is being done. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 2 ++ net/ipv6/ip6_gre.c | 8 ++++++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 829aff8b..0485ef1 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -241,6 +241,8 @@ static void __gre_xmit(struct sk_buff *skb, struct net_device *dev, /* Push GRE header. */ gre_build_header(skb, &tpi, tunnel->tun_hlen); + skb_set_inner_protocol(skb, tpi.proto); + ip_tunnel_xmit(skb, dev, tnl_params, tnl_params->protocol); } diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 5f19dfb..9a0a1aa 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -616,6 +616,7 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb, int err = -1; u8 proto; struct sk_buff *new_skb; + __be16 protocol; if (dev->type == ARPHRD_ETHER) IPCB(skb)->flags = 0; @@ -732,8 +733,9 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb, ipv6h->daddr = fl6->daddr; ((__be16 *)(ipv6h + 1))[0] = tunnel->parms.o_flags; - ((__be16 *)(ipv6h + 1))[1] = (dev->type == ARPHRD_ETHER) ? - htons(ETH_P_TEB) : skb->protocol; + protocol = (dev->type == ARPHRD_ETHER) ? + htons(ETH_P_TEB) : skb->protocol; + ((__be16 *)(ipv6h + 1))[1] = protocol; if (tunnel->parms.o_flags&(GRE_KEY|GRE_CSUM|GRE_SEQ)) { __be32 *ptr = (__be32 *)(((u8 *)ipv6h) + tunnel->hlen - 4); @@ -754,6 +756,8 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb, } } + skb_set_inner_protocol(skb, protocol); + ip6tunnel_xmit(skb, dev); if (ndst) ip6_tnl_dst_store(tunnel, ndst); -- 2.7.4