p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net: ipv4: add check for l3slave for index returned in IP_PKTINFO 

Similar to the loopback device, for packets sent through a VRF device
the index returned in ipi_ifindex needs to be the saved index in
rt_iif.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2017-08-11 17:11:15 -07:00 committed by David S. Miller
parent 4f04256c98
commit 1dfa76390b
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
net/ipv4/ip_sockglue.c
View File

@ -1207,6 +1207,7 @@ static int do_ip_setsockopt(struct sock *sk, int level,
void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb)
{
struct in_pktinfo *pktinfo = PKTINFO_SKB_CB(skb);
bool l3slave = ipv4_l3mdev_skb(IPCB(skb)->flags);
bool prepare = (inet_sk(sk)->cmsg_flags & IP_CMSG_PKTINFO) ||
ipv6_sk_rxinfo(sk);
@ -1220,7 +1221,7 @@ void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb)
* (e.g., process binds socket to eth0 for Tx which is
* redirected to loopback in the rtable/dst).
*/
if (pktinfo->ipi_ifindex == LOOPBACK_IFINDEX)
if (pktinfo->ipi_ifindex == LOOPBACK_IFINDEX || l3slave)
pktinfo->ipi_ifindex = inet_iif(skb);
pktinfo->ipi_spec_dst.s_addr = fib_compute_spec_dst(skb);