diff options
| author |   Eric Dumazet <edumazet@google.com> | 2013-10-19 11:42:55 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-10-19 19:36:18 -0400 |
| commit | 2d26f0a3c0e22f6b3096a2503d086e4b5e99d708 (patch) | |
| tree | 181acb2d3453b54ece6941dbd0d5241345552557 /net/ipv4/ip_tunnel_core.c | |
| parent | net: generalize skb_segment() (diff) | |
| download | linux-dev-2d26f0a3c0e22f6b3096a2503d086e4b5e99d708.tar.xz linux-dev-2d26f0a3c0e22f6b3096a2503d086e4b5e99d708.zip | |
ipv4: generalize gre_handle_offloads
This patch makes gre_handle_offloads() more generic
and rename it to iptunnel_handle_offloads()
This will be used to add GSO/TSO support to IPIP tunnels.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_tunnel_core.c')
| -rw-r--r-- | net/ipv4/ip_tunnel_core.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c index c31e3ad98ef2..42ffbc8d65c6 100644 --- a/net/ipv4/ip_tunnel_core.c +++ b/net/ipv4/ip_tunnel_core.c @@ -116,3 +116,36 @@ int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto) return 0; } EXPORT_SYMBOL_GPL(iptunnel_pull_header); + +struct sk_buff *iptunnel_handle_offloads(struct sk_buff *skb, + bool csum_help, + int gso_type_mask) +{ + int err; + + if (likely(!skb->encapsulation)) { + skb_reset_inner_headers(skb); + skb->encapsulation = 1; + } + + if (skb_is_gso(skb)) { + err = skb_unclone(skb, GFP_ATOMIC); + if (unlikely(err)) + goto error; + skb_shinfo(skb)->gso_type |= gso_type_mask; + return skb; + } + + if (skb->ip_summed == CHECKSUM_PARTIAL && csum_help) { + err = skb_checksum_help(skb); + if (unlikely(err)) + goto error; + } else if (skb->ip_summed != CHECKSUM_PARTIAL) + skb->ip_summed = CHECKSUM_NONE; + + return skb; +error: + kfree_skb(skb); + return ERR_PTR(err); +} +EXPORT_SYMBOL_GPL(iptunnel_handle_offloads); |