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authorYossef Efraim <yossefe@mellanox.com>2018-01-14 11:39:10 +0200
committerSteffen Klassert <steffen.klassert@secunet.com>2018-01-18 10:42:59 +0100
commit50bd870a9e5cca9fcf5fb4c130c373643d7d9906 (patch)
treee8195f25d0eab9eb269d97e360c573430c5af829 /net/xfrm
parent4f7d58517f461aa6e7b7509668f04021e089323d (diff)
xfrm: Add ESN support for IPSec HW offload
This patch adds ESN support to IPsec device offload. Adding new xfrm device operation to synchronize device ESN. Signed-off-by: Yossef Efraim <yossefe@mellanox.com> Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm')
-rw-r--r--net/xfrm/xfrm_device.c11
-rw-r--r--net/xfrm/xfrm_replay.c2
2 files changed, 11 insertions, 2 deletions
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index 75982506617b..93520106731f 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -147,8 +147,8 @@ int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
if (!x->type_offload)
return -EINVAL;
- /* We don't yet support UDP encapsulation, TFC padding and ESN. */
- if (x->encap || x->tfcpad || (x->props.flags & XFRM_STATE_ESN))
+ /* We don't yet support UDP encapsulation and TFC padding. */
+ if (x->encap || x->tfcpad)
return -EINVAL;
dev = dev_get_by_index(net, xuo->ifindex);
@@ -178,6 +178,13 @@ int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
return 0;
}
+ if (x->props.flags & XFRM_STATE_ESN &&
+ !dev->xfrmdev_ops->xdo_dev_state_advance_esn) {
+ xso->dev = NULL;
+ dev_put(dev);
+ return -EINVAL;
+ }
+
xso->dev = dev;
xso->num_exthdrs = 1;
xso->flags = xuo->flags;
diff --git a/net/xfrm/xfrm_replay.c b/net/xfrm/xfrm_replay.c
index 02501817227b..1d38c6acf8af 100644
--- a/net/xfrm/xfrm_replay.c
+++ b/net/xfrm/xfrm_replay.c
@@ -551,6 +551,8 @@ static void xfrm_replay_advance_esn(struct xfrm_state *x, __be32 net_seq)
bitnr = replay_esn->replay_window - (diff - pos);
}
+ xfrm_dev_state_advance_esn(x);
+
nr = bitnr >> 5;
bitnr = bitnr & 0x1F;
replay_esn->bmp[nr] |= (1U << bitnr);