X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=net%2Fxfrm%2Fxfrm_input.c;h=4c803f7e74e530f46185230118ccc0fd645acf15;hb=227620e295090629fcb2c46ad3828222ab65438d;hp=113f44429982d26ad4ffce161187cceaf0115073;hpb=b43035a5ec4deecd43019728ab9347df82dd121f;p=powerpc.git

diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 113f444299..4c803f7e74 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -49,13 +49,16 @@ EXPORT_SYMBOL(secpath_dup);
 int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)
 {
 	int offset, offset_seq;
+	int hlen;
 
 	switch (nexthdr) {
 	case IPPROTO_AH:
+		hlen = sizeof(struct ip_auth_hdr);
 		offset = offsetof(struct ip_auth_hdr, spi);
 		offset_seq = offsetof(struct ip_auth_hdr, seq_no);
 		break;
 	case IPPROTO_ESP:
+		hlen = sizeof(struct ip_esp_hdr);
 		offset = offsetof(struct ip_esp_hdr, spi);
 		offset_seq = offsetof(struct ip_esp_hdr, seq_no);
 		break;
@@ -69,7 +72,7 @@ int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)
 		return 1;
 	}
 
-	if (!pskb_may_pull(skb, 16))
+	if (!pskb_may_pull(skb, hlen))
 		return -EINVAL;
 
 	*spi = *(__be32*)(skb_transport_header(skb) + offset);
@@ -78,6 +81,19 @@ int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)
 }
 EXPORT_SYMBOL(xfrm_parse_spi);
 
+int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb)
+{
+	int err;
+
+	err = x->outer_mode->afinfo->extract_input(x, skb);
+	if (err)
+		return err;
+
+	skb->protocol = x->inner_mode->afinfo->eth_proto;
+	return x->inner_mode->input2(x, skb);
+}
+EXPORT_SYMBOL(xfrm_prepare_input);
+
 void __init xfrm_input_init(void)
 {
 	secpath_cachep = kmem_cache_create("secpath_cache",