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authorSteffen Klassert <steffen.klassert@secunet.com>2014-02-21 08:41:08 +0100
committerSteffen Klassert <steffen.klassert@secunet.com>2014-02-25 07:04:16 +0100
commit3328715e6c1fcb10cd86b0f3212d18290b7e4463 (patch)
tree15ba89891638afb7075b5a5046d357c9263ac265 /net/xfrm
parent51adfcc333e1490d3a22490f5b3504f64c7b28b4 (diff)
xfrm4: Add IPsec protocol multiplexer
This patch add an IPsec protocol multiplexer. With this it is possible to add alternative protocol handlers as needed for IPsec virtual tunnel interfaces. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm')
-rw-r--r--net/xfrm/xfrm_input.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 6c7ac016ce3a..99e3a9e5285e 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -108,7 +108,7 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
int err;
__be32 seq;
__be32 seq_hi;
- struct xfrm_state *x;
+ struct xfrm_state *x = NULL;
xfrm_address_t *daddr;
struct xfrm_mode *inner_mode;
unsigned int family;
@@ -120,9 +120,14 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
async = 1;
x = xfrm_input_state(skb);
seq = XFRM_SKB_CB(skb)->seq.input.low;
+ family = x->outer_mode->afinfo->family;
goto resume;
}
+ daddr = (xfrm_address_t *)(skb_network_header(skb) +
+ XFRM_SPI_SKB_CB(skb)->daddroff);
+ family = XFRM_SPI_SKB_CB(skb)->family;
+
/* Allocate new secpath or COW existing one. */
if (!skb->sp || atomic_read(&skb->sp->refcnt) != 1) {
struct sec_path *sp;
@@ -137,10 +142,6 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
skb->sp = sp;
}
- daddr = (xfrm_address_t *)(skb_network_header(skb) +
- XFRM_SPI_SKB_CB(skb)->daddroff);
- family = XFRM_SPI_SKB_CB(skb)->family;
-
seq = 0;
if (!spi && (err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) != 0) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMINHDRERROR);
@@ -201,7 +202,6 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
if (nexthdr == -EINPROGRESS)
return 0;
-
resume:
spin_lock(&x->lock);
if (nexthdr <= 0) {
@@ -263,6 +263,10 @@ resume:
}
} while (!err);
+ err = xfrm_rcv_cb(skb, family, x->type->proto, 0);
+ if (err)
+ goto drop;
+
nf_reset(skb);
if (decaps) {
@@ -276,6 +280,7 @@ resume:
drop_unlock:
spin_unlock(&x->lock);
drop:
+ xfrm_rcv_cb(skb, family, x && x->type ? x->type->proto : nexthdr, -1);
kfree_skb(skb);
return 0;
}

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