[RFC PATCH 04/16] gtp: really check namespaces before xmit
From: Jonas Bonn <hidden>
Date: 2021-01-23 20:08:05
Subsystem:
gtp (gprs tunneling protocol), networking drivers, the rest · Maintainers:
Pablo Neira Ayuso, Harald Welte, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Blindly assuming that packet transmission crosses namespaces results in skb marks being lost in the single namespace case. Signed-off-by: Jonas Bonn <redacted> Acked-by: Harald Welte <laforge@gnumonks.org> --- drivers/net/gtp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index 5682d3ba7aa5..e4e57c0552ee 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c@@ -592,7 +592,9 @@ static netdev_tx_t gtp_dev_xmit(struct sk_buff *skb, struct net_device *dev) ip4_dst_hoplimit(&pktinfo.rt->dst), 0, pktinfo.gtph_port, pktinfo.gtph_port, - true, false); + !net_eq(sock_net(pktinfo.pctx->sk), + dev_net(dev)), + false); break; }
--
2.27.0