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authorSteffen Klassert <steffen.klassert@secunet.com>2017-04-14 11:06:50 +0300
committerSteffen Klassert <steffen.klassert@secunet.com>2017-04-14 11:06:50 +0300
commit7862b4058b9f10c9177f347e7d981511bac87213 (patch)
treea33689f6215116d81214287c8c9b8944ea0e0323 /net/ipv4/esp4.c
parent383d0350f2cc5e5b3a2003c46e15c0b98432037b (diff)
downloadlinux-7862b4058b9f10c9177f347e7d981511bac87213.tar.xz
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.c10
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;