diff options
| author | Ilan Tayari <ilant@mellanox.com> | 2017-08-01 12:49:04 +0300 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2017-08-02 11:00:15 +0200 |
| commit | ec9567a9e008d1248e4d88f7ff1026ba68133621 (patch) | |
| tree | 3eb8ee70dd6aca66d8570c9e4d11d31b489e425c /net/ipv4/esp4_offload.c | |
| parent | cb5b136c0095d434cb63495da8efb6a3d663a38f (diff) | |
| download | lwn-ec9567a9e008d1248e4d88f7ff1026ba68133621.tar.gz lwn-ec9567a9e008d1248e4d88f7ff1026ba68133621.zip | |
esp4: Support RX checksum with crypto offload
Keep the device's reported ip_summed indication in case crypto
was offloaded by the device. Subtract the csum values of the
stripped parts (esp header+iv, esp trailer+auth_data) to keep
value correct.
Note: CHECKSUM_COMPLETE should be indicated only if skb->csum
has the post-decryption offload csum value.
Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv4/esp4_offload.c')
| -rw-r--r-- | net/ipv4/esp4_offload.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/esp4_offload.c b/net/ipv4/esp4_offload.c index e0666016a764..05831dea00f4 100644 --- a/net/ipv4/esp4_offload.c +++ b/net/ipv4/esp4_offload.c @@ -182,11 +182,13 @@ out: static int esp_input_tail(struct xfrm_state *x, struct sk_buff *skb) { struct crypto_aead *aead = x->data; + struct xfrm_offload *xo = xfrm_offload(skb); if (!pskb_may_pull(skb, sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead))) return -EINVAL; - skb->ip_summed = CHECKSUM_NONE; + if (!(xo->flags & CRYPTO_DONE)) + skb->ip_summed = CHECKSUM_NONE; return esp_input_done2(skb, 0); } |