ip/options: explicitly provide net ns to __ip_options_echo()
__ip_options_echo() uses the current network namespace, and
currently retrives it via skb->dst->dev.
This commit adds an explicit 'net' argument to __ip_options_echo()
and update all the call sites to provide it, usually via a simpler
sock_net().
After this change, __ip_options_echo() no more needs to access
skb->dst and we can drop a couple of hack to preserve such
info in the rx path.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index fdda973..525ae88 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -86,8 +86,8 @@ void ip_options_build(struct sk_buff *skb, struct ip_options *opt,
* NOTE: dopt cannot point to skb.
*/
-int __ip_options_echo(struct ip_options *dopt, struct sk_buff *skb,
- const struct ip_options *sopt)
+int __ip_options_echo(struct net *net, struct ip_options *dopt,
+ struct sk_buff *skb, const struct ip_options *sopt)
{
unsigned char *sptr, *dptr;
int soffset, doffset;
@@ -140,7 +140,7 @@ int __ip_options_echo(struct ip_options *dopt, struct sk_buff *skb,
__be32 addr;
memcpy(&addr, dptr+soffset-1, 4);
- if (inet_addr_type(dev_net(skb_dst(skb)->dev), addr) != RTN_UNICAST) {
+ if (inet_addr_type(net, addr) != RTN_UNICAST) {
dopt->ts_needtime = 1;
soffset += 8;
}
