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ipv4: Unmask upper DSCP bits in RTM_GETROUTE input route lookup

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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>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Acked-by: Florian Westphal <fw@strlen.de>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20240821125251.1571445-10-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Ido Schimmel 2024-08-21 15:52:48 +03:00 committed by Jakub Kicinski
parent df9131c7fa
commit b1251a6f1a
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/route.c
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@ -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);