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net/ipv6: Fix misuse of proc_dointvec "flowlabel_reflect" 

/proc/sys/net/ipv6/flowlabel_reflect assumes written value to be in the
range of 0 to 3. Use proc_dointvec_minmax instead of proc_dointvec.

Fixes: 323a53c412 ("ipv6: tcp: enable flowlabel reflection in some RST packets")
Signed-off-by: Eiichi Tsukata <devel@etsukata.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eiichi Tsukata 2019-06-28 11:37:14 +09:00 committed by David S. Miller
parent 27ba4059e0
commit 00dc3307c0
1 changed files with 1 additions and 1 deletions
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2
net/ipv6/sysctl_net_ipv6.c
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@ -114,7 +114,7 @@ static struct ctl_table ipv6_table_template[] = {
.data = &init_net.ipv6.sysctl.flowlabel_reflect,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
.proc_handler = proc_dointvec_minmax,
.extra1 = &zero,
.extra2 = &flowlabel_reflect_max,
},