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| author | Kuniyuki Iwashima <kuniyu@google.com> | 2026-06-05 01:46:21 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-06-09 03:06:22 +0300 |
| commit | 36be7d7c5ded0d70c3384e4730664e25b8d076fc (patch) | |
| tree | 381e6dbf94209c67b230a30bf87154aae6c87aac /include | |
| parent | 364568de4e7f8a5a0f0e12a0ba8812377f53c07a (diff) | |
| download | linux-36be7d7c5ded0d70c3384e4730664e25b8d076fc.tar.xz | |
ip6mr: Use MAXMIFS in mr6_msgsize().
mr6_msgsize() calculates skb size needed for ip6mr_fill_mroute().
The size differs based on mrt->maxvif.
We will drop RTNL for ip6mr_rtm_getroute() and mrt->maxvif may
change under RCU.
To avoid -EMSGSIZE, let's calculate the size with the maximum
value of mrt->maxvif, MAXMIFS.
struct rtnexthop is 8 bytes and MAXMIFS is 32, so the maximum delta
is 256 bytes, which is small enough.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260604224712.3209821-4-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions