diff options
| -rw-r--r-- | net/ipv6/ip6_gre.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 2be66e7b4a78..1a5ad143be40 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -598,6 +598,18 @@ static void init_tel_txopt(struct ipv6_tel_txoption *opt, __u8 encap_limit) opt->ops.opt_nflen = 8; } +static __sum16 gre6_checksum(struct sk_buff *skb) +{ + __wsum csum; + + if (skb->ip_summed == CHECKSUM_PARTIAL) + csum = lco_csum(skb); + else + csum = skb_checksum(skb, sizeof(struct ipv6hdr), + skb->len - sizeof(struct ipv6hdr), 0); + return csum_fold(csum); +} + static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb, struct net_device *dev, __u8 dsfield, @@ -750,8 +762,7 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb, } if (tunnel->parms.o_flags&GRE_CSUM) { *ptr = 0; - *(__sum16 *)ptr = ip_compute_csum((void *)(ipv6h+1), - skb->len - sizeof(struct ipv6hdr)); + *(__sum16 *)ptr = gre6_checksum(skb); } } @@ -1507,6 +1518,11 @@ static const struct net_device_ops ip6gre_tap_netdev_ops = { .ndo_get_iflink = ip6_tnl_get_iflink, }; +#define GRE6_FEATURES (NETIF_F_SG | \ + NETIF_F_FRAGLIST | \ + NETIF_F_HIGHDMA | \ + NETIF_F_HW_CSUM) + static void ip6gre_tap_setup(struct net_device *dev) { @@ -1540,6 +1556,9 @@ static int ip6gre_newlink(struct net *src_net, struct net_device *dev, nt->net = dev_net(dev); ip6gre_tnl_link_config(nt, !tb[IFLA_MTU]); + dev->features |= GRE6_FEATURES; + dev->hw_features |= GRE6_FEATURES; + /* Can use a lockless transmit, unless we generate output sequences */ if (!(nt->parms.o_flags & GRE_SEQ)) dev->features |= NETIF_F_LLTX; |