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authorDenis V. Lunev <den@openvz.org>2008-03-22 16:36:20 -0700
committerDavid S. Miller <davem@davemloft.net>2008-03-22 16:36:20 -0700
commit22aba383ce52f8ca8740f9a74dc66b1b68138813 (patch)
treec9616eb776a515cac03e20eee11fed1ed84c6999 /net
parentef722495c8867aacc1db0675a6737e5cf1e72e07 (diff)
downloadop-kernel-dev-22aba383ce52f8ca8740f9a74dc66b1b68138813.zip
op-kernel-dev-22aba383ce52f8ca8740f9a74dc66b1b68138813.tar.gz
[IPV4]: Always pass ip_options pointer into ip_options_compile.
This makes code a bit more uniform and straigthforward. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/ip_input.c5
-rw-r--r--net/ipv4/ip_options.c17
2 files changed, 10 insertions, 12 deletions
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index d36e310..e3a0c78 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -283,13 +283,14 @@ static inline int ip_rcv_options(struct sk_buff *skb)
}
iph = ip_hdr(skb);
+ opt = &(IPCB(skb)->opt);
+ opt->optlen = iph->ihl*4 - sizeof(struct iphdr);
- if (ip_options_compile(NULL, skb)) {
+ if (ip_options_compile(opt, skb)) {
IP_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
goto drop;
}
- opt = &(IPCB(skb)->opt);
if (unlikely(opt->srr)) {
struct in_device *in_dev = in_dev_get(dev);
if (in_dev) {
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 2fa4113..aeed4e5 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) {
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