diff mbox series

[net-next,09/12] ipv4: Unmask upper DSCP bits in RTM_GETROUTE input route lookup

Message ID 20240821125251.1571445-10-idosch@nvidia.com
State Handled Elsewhere, archived
Headers show
Series Unmask upper DSCP bits - part 1 | expand

Commit Message

Ido Schimmel Aug. 21, 2024, 12:52 p.m. UTC 
Unmask the upper DSCP bits when looking up an input route via the
RTM_GETROUTE netlink message so that in the future the lookup could be
performed according to the full DSCP value.

No functional changes intended since the upper DSCP bits are masked when
comparing against the TOS selectors in FIB rules and routes.

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

Comments

Guillaume Nault Aug. 21, 2024, 4:30 p.m. UTC | #1 
On Wed, Aug 21, 2024 at 03:52:48PM +0300, Ido Schimmel wrote:
> Unmask the upper DSCP bits when looking up an input route via the
> RTM_GETROUTE netlink message so that in the future the lookup could be
> performed according to the full DSCP value.

Reviewed-by: Guillaume Nault <gnault@redhat.com>
diff mbox series

Patch

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 73bb61162445..524b70ab77a0 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3286,7 +3286,7 @@  static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 		skb->dev	= dev;
 		skb->mark	= mark;
 		err = ip_route_input_rcu(skb, dst, src,
-					 rtm->rtm_tos & IPTOS_RT_MASK, dev,
+					 rtm->rtm_tos & INET_DSCP_MASK, dev,
 					 &res);
 
 		rt = skb_rtable(skb);