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sunrpc: Prevent resvport min/max inversion via sysfs and module parameter

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The current min/max resvport settings are independently limited
by the entire range of allowed ports, so max_resvport can be
set to a port lower than min_resvport.

Prevent inversion of min/max values when set through sysfs and
module parameter by setting the limits dependent on each other.

Signed-off-by: Frank Sorenson <sorenson@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Frank Sorenson 2016-07-08 16:35:25 -05:00 committed by Trond Myklebust
parent e08ea3a96f
commit ffb6ca33b0
1 changed files with 5 additions and 1 deletions
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6
net/sunrpc/xprtsock.c
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@ -3153,8 +3153,12 @@ static int param_set_uint_minmax(const char *val,
static int param_set_portnr(const char *val, const struct kernel_param *kp) static int param_set_portnr(const char *val, const struct kernel_param *kp)
{ {
return param_set_uint_minmax(val, kp, if (kp->arg == &xprt_min_resvport)
return param_set_uint_minmax(val, kp,
RPC_MIN_RESVPORT, RPC_MIN_RESVPORT,
xprt_max_resvport);
return param_set_uint_minmax(val, kp,
xprt_min_resvport,
RPC_MAX_RESVPORT); RPC_MAX_RESVPORT);
} }