[RFC Patch net-next 4/6] net_sched: introduce tcf_hash_copy()
flat view
STALE3686d
From: Cong Wang <hidden>
Date: 2016-09-02 05:57:49
Subsystem:
networking [general], tc subsystem, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Jamal Hadi Salim, Jiri Pirko, Linus Torvalds
Signed-off-by: Cong Wang <redacted> --- include/net/act_api.h | 1 + net/sched/act_api.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+)
diff --git a/include/net/act_api.h b/include/net/act_api.h
index a374bab..17837af 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h@@ -166,6 +166,7 @@ void tcf_hash_cleanup(struct tc_action *a, struct nlattr *est); void tcf_hash_insert(struct tc_action_net *tn, struct tc_action *a); void tcf_hash_replace(struct tc_action_net *tn, struct tc_action **old, struct tc_action *new, int bind); +bool tcf_hash_copy(struct tc_action *dst, const struct tc_action *src); int __tcf_hash_release(struct tc_action *a, bool bind, bool strict);
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index d0a7db2..2f8db3c 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c@@ -296,6 +296,24 @@ int tcf_hash_create(struct tc_action_net *tn, u32 index, struct nlattr *est, } EXPORT_SYMBOL(tcf_hash_create); +bool tcf_hash_copy(struct tc_action *dst, const struct tc_action *src) +{ + if (src) { + memcpy(dst, src, sizeof(*src)); + spin_lock_init(&dst->tcfa_lock); + INIT_HLIST_NODE(&dst->tcfa_head); + INIT_LIST_HEAD(&dst->list); + + /* tcf_hash_check() is called before this */ + dst->tcfa_refcnt = src->tcfa_refcnt - 1; + if (src->tcfa_bindcnt) + dst->tcfa_bindcnt = src->tcfa_bindcnt - 1; + return true; + } + return false; +} +EXPORT_SYMBOL(tcf_hash_copy); + void tcf_hash_insert(struct tc_action_net *tn, struct tc_action *a) { struct tcf_hashinfo *hinfo = tn->hinfo;
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2.1.0