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net sched actions: fix module auto-loading

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Macro __stringify_1() can stringify a macro argument, however IFE_META_*
are enums, so they never expand, however request_module expects an integer
in IFE module name, so as a result it always fails to auto-load.

Fixes: ef6980b6be ("introduce IFE action")
Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roman Mashak 2017-10-11 10:50:30 -04:00 committed by David S. Miller
parent 8f04748016
commit d3f24ba895
1 changed files with 15 additions and 1 deletions
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16
net/sched/act_ife.c
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@ -248,6 +248,20 @@ static int ife_validate_metatype(struct tcf_meta_ops *ops, void *val, int len)
return ret;
}
static const char *ife_meta_id2name(u32 metaid)
{
switch (metaid) {
case IFE_META_SKBMARK:
return "skbmark";
case IFE_META_PRIO:
return "skbprio";
case IFE_META_TCINDEX:
return "tcindex";
default:
return "unknown";
}
}
/* called when adding new meta information
* under ife->tcf_lock for existing action
*/
@ -263,7 +277,7 @@ static int load_metaops_and_vet(struct tcf_ife_info *ife, u32 metaid,
if (exists)
spin_unlock_bh(&ife->tcf_lock);
rtnl_unlock();
request_module("ife-meta-%u", metaid);
request_module("ife-meta-%s", ife_meta_id2name(metaid));
rtnl_lock();
if (exists)
spin_lock_bh(&ife->tcf_lock);