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authorIlan Tayari <ilant@mellanox.com>2017-08-01 12:49:08 +0300
committerSteffen Klassert <steffen.klassert@secunet.com>2017-08-02 11:00:15 +0200
commitffdb5211da1c20354f1b40c204b6cf6c29c68161 (patch)
tree04cc29d6355ca8a0fbadb04a51ab3186fe294cf4 /net
parenta9b28c2bf05d9d9998d5d3c6453fd75bc4cf8a6d (diff)
downloadlinux-stericsson-ffdb5211da1c20354f1b40c204b6cf6c29c68161.tar.gz
xfrm: Auto-load xfrm offload modules
IPSec crypto offload depends on the protocol-specific offload module (such as esp_offload.ko). When the user installs an SA with crypto-offload, load the offload module automatically, in the same way that the protocol module is loaded (such as esp.ko) Signed-off-by: Ilan Tayari <ilant@mellanox.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/esp4_offload.c1
-rw-r--r--net/ipv6/esp6_offload.c1
-rw-r--r--net/xfrm/xfrm_device.c2
-rw-r--r--net/xfrm/xfrm_state.c16
-rw-r--r--net/xfrm/xfrm_user.c2
5 files changed, 16 insertions, 6 deletions
diff --git a/net/ipv4/esp4_offload.c b/net/ipv4/esp4_offload.c
index 05831dea00f4..aca1c85f0795 100644
--- a/net/ipv4/esp4_offload.c
+++ b/net/ipv4/esp4_offload.c
@@ -305,3 +305,4 @@ module_init(esp4_offload_init);
module_exit(esp4_offload_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Steffen Klassert <steffen.klassert@secunet.com>");
+MODULE_ALIAS_XFRM_OFFLOAD_TYPE(AF_INET, XFRM_PROTO_ESP);
diff --git a/net/ipv6/esp6_offload.c b/net/ipv6/esp6_offload.c
index eec3add177fe..8d4e2ba9163d 100644
--- a/net/ipv6/esp6_offload.c
+++ b/net/ipv6/esp6_offload.c
@@ -334,3 +334,4 @@ module_init(esp6_offload_init);
module_exit(esp6_offload_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Steffen Klassert <steffen.klassert@secunet.com>");
+MODULE_ALIAS_XFRM_OFFLOAD_TYPE(AF_INET6, XFRM_PROTO_ESP);
diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c
index 5cd7a244e88d..1904127f5fb8 100644
--- a/net/xfrm/xfrm_device.c
+++ b/net/xfrm/xfrm_device.c
@@ -63,7 +63,7 @@ int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
xfrm_address_t *daddr;
if (!x->type_offload)
- return 0;
+ return -EINVAL;
/* We don't yet support UDP encapsulation, TFC padding and ESN. */
if (x->encap || x->tfcpad || (x->props.flags & XFRM_STATE_ESN))
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 82cbbce69b79..a41e2ef789c0 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -296,12 +296,14 @@ int xfrm_unregister_type_offload(const struct xfrm_type_offload *type,
}
EXPORT_SYMBOL(xfrm_unregister_type_offload);
-static const struct xfrm_type_offload *xfrm_get_type_offload(u8 proto, unsigned short family)
+static const struct xfrm_type_offload *
+xfrm_get_type_offload(u8 proto, unsigned short family, bool try_load)
{
struct xfrm_state_afinfo *afinfo;
const struct xfrm_type_offload **typemap;
const struct xfrm_type_offload *type;
+retry:
afinfo = xfrm_state_get_afinfo(family);
if (unlikely(afinfo == NULL))
return NULL;
@@ -311,6 +313,12 @@ static const struct xfrm_type_offload *xfrm_get_type_offload(u8 proto, unsigned
if ((type && !try_module_get(type->owner)))
type = NULL;
+ if (!type && try_load) {
+ request_module("xfrm-offload-%d-%d", family, proto);
+ try_load = 0;
+ goto retry;
+ }
+
rcu_read_unlock();
return type;
}
@@ -2165,7 +2173,7 @@ int xfrm_state_mtu(struct xfrm_state *x, int mtu)
return mtu - x->props.header_len;
}
-int __xfrm_init_state(struct xfrm_state *x, bool init_replay)
+int __xfrm_init_state(struct xfrm_state *x, bool init_replay, bool offload)
{
struct xfrm_state_afinfo *afinfo;
struct xfrm_mode *inner_mode;
@@ -2230,7 +2238,7 @@ int __xfrm_init_state(struct xfrm_state *x, bool init_replay)
if (x->type == NULL)
goto error;
- x->type_offload = xfrm_get_type_offload(x->id.proto, family);
+ x->type_offload = xfrm_get_type_offload(x->id.proto, family, offload);
err = x->type->init_state(x);
if (err)
@@ -2258,7 +2266,7 @@ EXPORT_SYMBOL(__xfrm_init_state);
int xfrm_init_state(struct xfrm_state *x)
{
- return __xfrm_init_state(x, true);
+ return __xfrm_init_state(x, true, false);
}
EXPORT_SYMBOL(xfrm_init_state);
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 1b539b7dcfab..ffe8d5ef09eb 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -584,7 +584,7 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
xfrm_mark_get(attrs, &x->mark);
- err = __xfrm_init_state(x, false);
+ err = __xfrm_init_state(x, false, attrs[XFRMA_OFFLOAD_DEV]);
if (err)
goto error;