netdev - [PATCH net-next 05/12] ipv4: ip_tunnel: Unmask upper DSCP bits in ip_tunnel_bind

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240905165140.3105140-6-idosch@nvidia.com>
Date: Thu, 5 Sep 2024 19:51:33 +0300
From: Ido Schimmel <idosch@...dia.com>
To: <netdev@...r.kernel.org>
CC: <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>,
	<edumazet@...gle.com>, <dsahern@...nel.org>, <gnault@...hat.com>,
	<razor@...ckwall.org>, <pablo@...filter.org>, <kadlec@...filter.org>,
	<marcelo.leitner@...il.com>, <lucien.xin@...il.com>,
	<bridge@...ts.linux.dev>, <netfilter-devel@...r.kernel.org>,
	<coreteam@...filter.org>, <linux-sctp@...r.kernel.org>,
	<bpf@...r.kernel.org>, Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 05/12] ipv4: ip_tunnel: Unmask upper DSCP bits in ip_tunnel_bind_dev()

Unmask the upper DSCP bits when initializing an IPv4 flow key via
ip_tunnel_init_flow() before passing it to ip_route_output_key() so that
in the future we could perform the FIB lookup according to the full DSCP
value.

Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
 net/ipv4/ip_tunnel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 18964394d6bd..b632c128ecb7 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -293,7 +293,7 @@ static int ip_tunnel_bind_dev(struct net_device *dev)
 
 		ip_tunnel_init_flow(&fl4, iph->protocol, iph->daddr,
 				    iph->saddr, tunnel->parms.o_key,
-				    RT_TOS(iph->tos), dev_net(dev),
+				    iph->tos & INET_DSCP_MASK, dev_net(dev),
 				    tunnel->parms.link, tunnel->fwmark, 0, 0);
 		rt = ip_route_output_key(tunnel->net, &fl4);
 
-- 
2.46.0