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rtnetlink: stats: reject requests for unknown stats

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In the spirit of strict checks reject requests of stats the kernel
does not support when NETLINK_F_STRICT_CHK is set.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2019-01-18 10:46:15 -08:00 committed by David S. Miller
parent 51bc860d4a
commit 6300acb2eb
1 changed files with 4 additions and 0 deletions
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4
net/core/rtnetlink.c
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@ -4928,6 +4928,10 @@ static int rtnl_valid_stats_req(const struct nlmsghdr *nlh, bool strict_check,
NL_SET_ERR_MSG(extack, "Invalid attributes after stats header");
return -EINVAL;
}
if (ifsm->filter_mask >= IFLA_STATS_FILTER_BIT(IFLA_STATS_MAX + 1)) {
NL_SET_ERR_MSG(extack, "Invalid stats requested through filter mask");
return -EINVAL;
}
return 0;
}