diff options
| author | Guillaume Nault <gnault@redhat.com> | 2024-04-05 22:05:00 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-04-08 13:20:51 +0100 |
| commit | ec20b283009346adc66d5a460b1f8fb5adafbcfe (patch) | |
| tree | 36b9dfa207e7d4d663dd41d84f8aae36da254627 /net/ipv4/igmp.c | |
| parent | 229783970838887e72083820efb9270b7f276a11 (diff) | |
ipv4: Set scope explicitly in ip_route_output().
Add a "scope" parameter to ip_route_output() so that callers don't have
to override the tos parameter with the RTO_ONLINK flag if they want a
local scope.
This will allow converting flowi4_tos to dscp_t in the future, thus
allowing static analysers to flag invalid interactions between
"tos" (the DSCP bits) and ECN.
Only three users ask for local scope (bonding, arp and atm). The others
continue to use RT_SCOPE_UNIVERSE. While there, add a comment to warn
users about the limitations of ip_route_output().
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Acked-by: Leon Romanovsky <leonro@nvidia.com> # infiniband
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/igmp.c')
| -rw-r--r-- | net/ipv4/igmp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index 717e97a389a8..9bf09de6a2e7 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -1842,7 +1842,8 @@ static struct in_device *ip_mc_find_dev(struct net *net, struct ip_mreqn *imr) if (!dev) { struct rtable *rt = ip_route_output(net, imr->imr_multiaddr.s_addr, - 0, 0, 0); + 0, 0, 0, + RT_SCOPE_UNIVERSE); if (!IS_ERR(rt)) { dev = rt->dst.dev; ip_rt_put(rt); |