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| author | Willem de Bruijn <willemb@google.com> | 2018-04-26 13:42:16 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-26 15:07:42 -0400 |
| commit | ee80d1ebe5ba7f4bd74959c873119175a4fc08d3 (patch) | |
| tree | 0bca8b68c30175a1f650f0230811d7edcd2ceed3 /net/ipv6/ip6_offload.c | |
| parent | 1cd7884dfd78df6284d27b008823b0b4a808f196 (diff) | |
| download | lwn-ee80d1ebe5ba7f4bd74959c873119175a4fc08d3.tar.gz lwn-ee80d1ebe5ba7f4bd74959c873119175a4fc08d3.zip | |
udp: add udp gso
Implement generic segmentation offload support for udp datagrams. A
follow-up patch adds support to the protocol stack to generate such
packets.
UDP GSO is not UFO. UFO fragments a single large datagram. GSO splits
a large payload into a number of discrete UDP datagrams.
The implementation adds a GSO type SKB_UDP_GSO_L4 to differentiate it
from UFO (SKB_UDP_GSO).
IPPROTO_UDPLITE is excluded, as that protocol has no gso handler
registered.
[ Export __udp_gso_segment for ipv6. -DaveM ]
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_offload.c')
| -rw-r--r-- | net/ipv6/ip6_offload.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c index 4a87f9428ca5..5b3f2f89ef41 100644 --- a/net/ipv6/ip6_offload.c +++ b/net/ipv6/ip6_offload.c @@ -88,9 +88,11 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, if (skb->encapsulation && skb_shinfo(skb)->gso_type & (SKB_GSO_IPXIP4 | SKB_GSO_IPXIP6)) - udpfrag = proto == IPPROTO_UDP && encap; + udpfrag = proto == IPPROTO_UDP && encap && + (skb_shinfo(skb)->gso_type & SKB_GSO_UDP); else - udpfrag = proto == IPPROTO_UDP && !skb->encapsulation; + udpfrag = proto == IPPROTO_UDP && !skb->encapsulation && + (skb_shinfo(skb)->gso_type & SKB_GSO_UDP); ops = rcu_dereference(inet6_offloads[proto]); if (likely(ops && ops->callbacks.gso_segment)) { |