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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2017-04-14 10:06:10 +0200 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2017-04-14 10:06:10 +0200 |
| commit | d77e38e612a017480157fe6d2c1422f42cb5b7e3 (patch) | |
| tree | ae95d5230477ab95e8f301e9123c9f698a530551 /net/ipv4/esp4.c | |
| parent | c35fe4106b928d0a5909cfdac53c1db559b24299 (diff) | |
| download | linux-d77e38e612a017480157fe6d2c1422f42cb5b7e3.tar.bz2 | |
xfrm: Add an IPsec hardware offloading API
This patch adds all the bits that are needed to do
IPsec hardware offload for IPsec states and ESP packets.
We add xfrmdev_ops to the net_device. xfrmdev_ops has
function pointers that are needed to manage the xfrm
states in the hardware and to do a per packet
offloading decision.
Joint work with:
Ilan Tayari <ilant@mellanox.com>
Guy Shapiro <guysh@mellanox.com>
Yossi Kuperman <yossiku@mellanox.com>
Signed-off-by: Guy Shapiro <guysh@mellanox.com>
Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: Yossi Kuperman <yossiku@mellanox.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv4/esp4.c')
| -rw-r--r-- | net/ipv4/esp4.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index b1e24446e297..c6aba234b6e9 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -435,9 +435,6 @@ skip_cow2: aead_request_set_crypt(req, sg, dsg, ivlen + clen, iv); aead_request_set_ad(req, assoclen); - seqno = cpu_to_be64(XFRM_SKB_CB(skb)->seq.output.low + - ((u64)XFRM_SKB_CB(skb)->seq.output.hi << 32)); - memset(iv, 0, ivlen); memcpy(iv + ivlen - min(ivlen, 8), (u8 *)&seqno + 8 - min(ivlen, 8), min(ivlen, 8)); @@ -470,6 +467,7 @@ static int esp_input_done2(struct sk_buff *skb, int err) { const struct iphdr *iph; struct xfrm_state *x = xfrm_input_state(skb); + struct xfrm_offload *xo = xfrm_offload(skb); struct crypto_aead *aead = x->data; int alen = crypto_aead_authsize(aead); int hlen = sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead); @@ -478,7 +476,8 @@ static int esp_input_done2(struct sk_buff *skb, int err) u8 nexthdr[2]; int padlen; - kfree(ESP_SKB_CB(skb)->tmp); + if (!xo || (xo && !(xo->flags & CRYPTO_DONE))) + kfree(ESP_SKB_CB(skb)->tmp); if (unlikely(err)) goto out; |