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Diffstat (limited to 'net/ipv4/ip_sockglue.c')
-rw-r--r--net/ipv4/ip_sockglue.c19
1 files changed, 7 insertions, 12 deletions
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index ecc4b4a2413e..e558e4f9597b 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -80,7 +80,8 @@ static void ip_cmsg_recv_opts(struct msghdr *msg, struct sk_buff *skb)
}
-static void ip_cmsg_recv_retopts(struct msghdr *msg, struct sk_buff *skb)
+static void ip_cmsg_recv_retopts(struct net *net, struct msghdr *msg,
+ struct sk_buff *skb)
{
unsigned char optbuf[sizeof(struct ip_options) + 40];
struct ip_options *opt = (struct ip_options *)optbuf;
@@ -88,7 +89,7 @@ static void ip_cmsg_recv_retopts(struct msghdr *msg, struct sk_buff *skb)
if (IPCB(skb)->opt.optlen == 0)
return;
- if (ip_options_echo(opt, skb)) {
+ if (ip_options_echo(net, opt, skb)) {
msg->msg_flags |= MSG_CTRUNC;
return;
}
@@ -204,7 +205,7 @@ void ip_cmsg_recv_offset(struct msghdr *msg, struct sock *sk,
}
if (flags & IP_CMSG_RETOPTS) {
- ip_cmsg_recv_retopts(msg, skb);
+ ip_cmsg_recv_retopts(sock_net(sk), msg, skb);
flags &= ~IP_CMSG_RETOPTS;
if (!flags)
@@ -1206,6 +1207,7 @@ e_inval:
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);
@@ -1219,7 +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);
@@ -1227,14 +1229,7 @@ void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb)
pktinfo->ipi_ifindex = 0;
pktinfo->ipi_spec_dst.s_addr = 0;
}
- /* We need to keep the dst for __ip_options_echo()
- * We could restrict the test to opt.ts_needtime || opt.srr,
- * but the following is good enough as IP options are not often used.
- */
- if (unlikely(IPCB(skb)->opt.optlen))
- skb_dst_force(skb);
- else
- skb_dst_drop(skb);
+ skb_dst_drop(skb);
}
int ip_setsockopt(struct sock *sk, int level,