[SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c
index d89969c..5ceca95 100644
--- a/net/ipv4/xfrm4_input.c
+++ b/net/ipv4/xfrm4_input.c
@@ -28,7 +28,7 @@
switch (nexthdr) {
case IPPROTO_IPIP:
case IPPROTO_IPV6:
- *spi = skb->nh.iph->saddr;
+ *spi = ip_hdr(skb)->saddr;
*seq = 0;
return 0;
}
@@ -39,9 +39,9 @@
#ifdef CONFIG_NETFILTER
static inline int xfrm4_rcv_encap_finish(struct sk_buff *skb)
{
- struct iphdr *iph = skb->nh.iph;
-
if (skb->dst == NULL) {
+ const struct iphdr *iph = ip_hdr(skb);
+
if (ip_route_input(skb, iph->daddr, iph->saddr, iph->tos,
skb->dev))
goto drop;
@@ -55,18 +55,18 @@
int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type)
{
- int err;
__be32 spi, seq;
struct xfrm_state *xfrm_vec[XFRM_MAX_DEPTH];
struct xfrm_state *x;
int xfrm_nr = 0;
int decaps = 0;
+ int err = xfrm4_parse_spi(skb, ip_hdr(skb)->protocol, &spi, &seq);
- if ((err = xfrm4_parse_spi(skb, skb->nh.iph->protocol, &spi, &seq)) != 0)
+ if (err != 0)
goto drop;
do {
- struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
if (xfrm_nr == XFRM_MAX_DEPTH)
goto drop;
@@ -113,7 +113,8 @@
break;
}
- if ((err = xfrm_parse_spi(skb, skb->nh.iph->protocol, &spi, &seq)) < 0)
+ err = xfrm_parse_spi(skb, ip_hdr(skb)->protocol, &spi, &seq);
+ if (err < 0)
goto drop;
} while (!err);
@@ -147,14 +148,14 @@
} else {
#ifdef CONFIG_NETFILTER
__skb_push(skb, skb->data - skb_network_header(skb));
- skb->nh.iph->tot_len = htons(skb->len);
- ip_send_check(skb->nh.iph);
+ ip_hdr(skb)->tot_len = htons(skb->len);
+ ip_send_check(ip_hdr(skb));
NF_HOOK(PF_INET, NF_IP_PRE_ROUTING, skb, skb->dev, NULL,
xfrm4_rcv_encap_finish);
return 0;
#else
- return -skb->nh.iph->protocol;
+ return -ip_hdr(skb)->protocol;
#endif
}