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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2016-09-19 12:58:47 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-19 20:59:34 -0400 |
| commit | 07b26c9454a2a19fff86d6fcf2aba6bc801eb8d8 (patch) | |
| tree | 45cf751adb10dabaf383eaa07238c3427e3fe3f0 /net/ipv6 | |
| parent | e867e87ae88c54f741d1cabd1de536b4497a0504 (diff) | |
| download | linux-0-day-07b26c9454a2a19fff86d6fcf2aba6bc801eb8d8.tar.gz linux-0-day-07b26c9454a2a19fff86d6fcf2aba6bc801eb8d8.tar.xz | |
gso: Support partial splitting at the frag_list pointer
Since commit 8a29111c7 ("net: gro: allow to build full sized skb")
gro may build buffers with a frag_list. This can hurt forwarding
because most NICs can't offload such packets, they need to be
segmented in software. This patch splits buffers with a frag_list
at the frag_list pointer into buffers that can be TSO offloaded.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/ip6_offload.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c index 22e90e56b5a9f..e7bfd55899a34 100644 --- a/net/ipv6/ip6_offload.c +++ b/net/ipv6/ip6_offload.c @@ -69,6 +69,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int offset = 0; bool encap, udpfrag; int nhoff; + bool gso_partial; skb_reset_network_header(skb); nhoff = skb_network_header(skb) - skb_mac_header(skb); @@ -101,9 +102,11 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, if (IS_ERR(segs)) goto out; + gso_partial = !!(skb_shinfo(segs)->gso_type & SKB_GSO_PARTIAL); + for (skb = segs; skb; skb = skb->next) { ipv6h = (struct ipv6hdr *)(skb_mac_header(skb) + nhoff); - if (skb_is_gso(skb)) + if (gso_partial) payload_len = skb_shinfo(skb)->gso_size + SKB_GSO_CB(skb)->data_offset + skb->head - (unsigned char *)(ipv6h + 1); |