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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)
255 unsigned char * optptr; 255 unsigned char * optptr;
256 int optlen; 256 int optlen;
257 unsigned char * pp_ptr = NULL; 257 unsigned char * pp_ptr = NULL;
258 struct rtable *rt = skb ? skb->rtable : NULL; 258 struct rtable *rt = NULL;
259 259
260 if (!opt) { 260 if (skb != NULL) {
261 opt = &(IPCB(skb)->opt); 261 rt = skb->rtable;
262 iph = skb_network_header(skb); 262 optptr = (unsigned char *)&(ip_hdr(skb)[1]);
263 opt->optlen = ((struct iphdr *)iph)->ihl*4 - sizeof(struct iphdr); 263 } else
264 optptr = iph + sizeof(struct iphdr);
265 } else {
266 optptr = opt->__data; 264 optptr = opt->__data;
267 iph = optptr - sizeof(struct iphdr); 265 iph = optptr - sizeof(struct iphdr);
268 }
269 266
270 for (l = opt->optlen; l > 0; ) { 267 for (l = opt->optlen; l > 0; ) {
271 switch (*optptr) { 268 switch (*optptr) {