net: bridge: mcast: add and enforce query interval minimum

mainline inclusion
from mainline-v5.16-rc8
commit 99b40610
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6DKZJ
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=99b40610956a8a8755653a67392e2a8b772453be

--------------------------------

As reported[1] if query interval is set too low and we have multiple
bridges or even a single bridge with multiple querier vlans configured
we can crash the machine. Add a 1 second minimum which must be enforced
by overwriting the value if set lower (i.e. without returning an error) to
avoid breaking user-space. If that happens a log message is emitted to let
the administrator know that the interval has been set to the minimum.
The issue has been present since these intervals could be user-controlled.

[1] https://lore.kernel.org/netdev/e8b9ce41-57b9-b6e2-a46a-ff9c791cf0ba@gmail.com/



Fixes: d902eee4 ("bridge: Add multicast count/interval sysfs entries")
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Conflicts:
	net/bridge/br_multicast.c
	net/bridge/br_netlink.c
	net/bridge/br_private.h
	net/bridge/br_sysfs_br.c

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>