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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/core/skbuff.c | |
| parent | 1cd7884dfd78df6284d27b008823b0b4a808f196 (diff) | |
| download | op-kernel-dev-ee80d1ebe5ba7f4bd74959c873119175a4fc08d3.zip op-kernel-dev-ee80d1ebe5ba7f4bd74959c873119175a4fc08d3.tar.gz | |
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/core/skbuff.c')
| -rw-r--r-- | net/core/skbuff.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index ff49e35..c647cfe 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -4940,6 +4940,8 @@ static unsigned int skb_gso_transport_seglen(const struct sk_buff *skb) thlen = tcp_hdrlen(skb); } else if (unlikely(skb_is_gso_sctp(skb))) { thlen = sizeof(struct sctphdr); + } else if (shinfo->gso_type & SKB_GSO_UDP_L4) { + thlen = sizeof(struct udphdr); } /* UFO sets gso_size to the size of the fragmentation * payload, i.e. the size of the L4 (UDP) header is already |
