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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2017-04-14 10:06:50 +0200 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2017-04-14 10:06:50 +0200 |
| commit | 7862b4058b9f10c9177f347e7d981511bac87213 (patch) | |
| tree | a33689f6215116d81214287c8c9b8944ea0e0323 /net/ipv4/esp4.c | |
| parent | 383d0350f2cc5e5b3a2003c46e15c0b98432037b (diff) | |
| download | linux-7862b4058b9f10c9177f347e7d981511bac87213.tar.gz linux-7862b4058b9f10c9177f347e7d981511bac87213.tar.bz2 linux-7862b4058b9f10c9177f347e7d981511bac87213.zip | |
esp: Add gso handlers for esp4 and esp6
This patch extends the xfrm_type by an encap function pointer
and implements esp4_gso_encap and esp6_gso_encap. These functions
doing the basic esp encapsulation for a GSO packet. In case the
GSO packet needs to be segmented in software, we add gso_segment
functions. This codepath is going to be used on esp hardware
offloads.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv4/esp4.c')
| -rw-r--r-- | net/ipv4/esp4.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index 91e6a402e22e..4382f306935b 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -161,11 +161,19 @@ static struct ip_esp_hdr *esp_output_set_extra(struct sk_buff *skb, * encryption. */ if ((x->props.flags & XFRM_STATE_ESN)) { + __u32 seqhi; + struct xfrm_offload *xo = xfrm_offload(skb); + + if (xo) + seqhi = xo->seq.hi; + else + seqhi = XFRM_SKB_CB(skb)->seq.output.hi; + extra->esphoff = (unsigned char *)esph - skb_transport_header(skb); esph = (struct ip_esp_hdr *)((unsigned char *)esph - 4); extra->seqhi = esph->spi; - esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output.hi); + esph->seq_no = htonl(seqhi); } esph->spi = x->id.spi; |