linux/include/net/tc_act/tc_mirred.h
stephen hemminger 3b87956ea6 net sched: fix race in mirred device removal
This fixes hang when target device of mirred packet classifier
action is removed.

If a mirror or redirection action is configured to cause packets
to go to another device, the classifier holds a ref count, but was assuming
the adminstrator cleaned up all redirections before removing. The fix
is to add a notifier and cleanup during unregister.

The new list is implicitly protected by RTNL mutex because
it is held during filter add/delete as well as notifier.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-24 21:04:20 -07:00

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343 B
C

#ifndef __NET_TC_MIR_H
#define __NET_TC_MIR_H
#include <net/act_api.h>
struct tcf_mirred {
struct tcf_common common;
int tcfm_eaction;
int tcfm_ifindex;
int tcfm_ok_push;
struct net_device *tcfm_dev;
struct list_head tcfm_list;
};
#define to_mirred(pc) \
container_of(pc, struct tcf_mirred, common)
#endif /* __NET_TC_MIR_H */