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authorYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>2016-07-19 14:40:51 +0900
committerDavid S. Miller <davem@davemloft.net>2016-07-19 21:00:50 -0700
commitedbe77462302ec0b11a90244de13f9012118c538 (patch)
tree4f062bf4f363f4eefe44d002876aa5fc2d38d2d1
parenteabfdda93477f6ee5e153f560560e9cb1c617fd7 (diff)
downloadlinux-edbe77462302ec0b11a90244de13f9012118c538.tar.bz2
packet: fix second argument of sock_tx_timestamp()
This patch fixes an issue that a syscall (e.g. sendto syscall) cannot work correctly. Since the sendto syscall doesn't have msg_control buffer, the sock_tx_timestamp() in packet_snd() cannot work correctly because the socks.tsflags is set to 0. So, this patch sets the socks.tsflags to sk->sk_tsflags as default. Fixes: c14ac9451c34 ("sock: enable timestamping using control messages") Reported-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> Reported-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/packet/af_packet.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 9f0983fa4d52..53e87ceb26e7 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1927,7 +1927,7 @@ retry:
goto out_unlock;
}
- sockc.tsflags = 0;
+ sockc.tsflags = sk->sk_tsflags;
if (msg->msg_controllen) {
err = sock_cmsg_send(sk, msg, &sockc);
if (unlikely(err)) {
@@ -2678,7 +2678,7 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
dev = dev_get_by_index(sock_net(&po->sk), saddr->sll_ifindex);
}
- sockc.tsflags = 0;
+ sockc.tsflags = po->sk.sk_tsflags;
if (msg->msg_controllen) {
err = sock_cmsg_send(&po->sk, msg, &sockc);
if (unlikely(err))
@@ -2881,7 +2881,7 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
if (unlikely(!(dev->flags & IFF_UP)))
goto out_unlock;
- sockc.tsflags = 0;
+ sockc.tsflags = sk->sk_tsflags;
sockc.mark = sk->sk_mark;
if (msg->msg_controllen) {
err = sock_cmsg_send(sk, msg, &sockc);