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Diffstat (limited to 'net/ipv4/ip_options.c')
-rw-r--r--net/ipv4/ip_options.c17
1 files changed, 7 insertions, 10 deletions
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 2fa411381b11..aeed4e5858ec 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -255,17 +255,14 @@ int ip_options_compile(struct ip_options * opt, struct sk_buff * skb)
unsigned char * optptr;
int optlen;
unsigned char * pp_ptr = NULL;
- struct rtable *rt = skb ? skb->rtable : NULL;
-
- if (!opt) {
- opt = &(IPCB(skb)->opt);
- iph = skb_network_header(skb);
- opt->optlen = ((struct iphdr *)iph)->ihl*4 - sizeof(struct iphdr);
- optptr = iph + sizeof(struct iphdr);
- } else {
+ struct rtable *rt = NULL;
+
+ if (skb != NULL) {
+ rt = skb->rtable;
+ optptr = (unsigned char *)&(ip_hdr(skb)[1]);
+ } else
optptr = opt->__data;
- iph = optptr - sizeof(struct iphdr);
- }
+ iph = optptr - sizeof(struct iphdr);
for (l = opt->optlen; l > 0; ) {
switch (*optptr) {