tree 2c5a1671182ea951953b39baa2f1b3155d6153eb
parent 0dadc117ac8bc78d8144e862ac8ad23f342f9ea8
author Cong Wang <xiyou.wangcong@gmail.com> 1510004845 -0800
committer David S. Miller <davem@davemloft.net> 1510189389 +0900

cls_fw: use tcf_exts_get_net() before call_rcu()

Hold netns refcnt before call_rcu() and release it after
the tcf_exts_destroy() is done.

Note, on ->destroy() path we have to respect the return value
of tcf_exts_get_net(), on other paths it should always return
true, so we don't need to care.

Cc: Lucas Bates <lucasb@mojatatu.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>