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| author |   Vlad Buslov <vladbu@mellanox.com> | 2019-02-11 10:55:40 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-02-12 13:41:33 -0500 |
| commit | fe2923afc12490e92237d23fc0b29f31da72a4f9 (patch) | |
| tree | 5bcb097d9029d658b8a500bdb534eea13924edc9 /include/net | |
| parent | net: sched: introduce reference counting for tcf_proto (diff) | |
| download | linux-dev-fe2923afc12490e92237d23fc0b29f31da72a4f9.tar.xz linux-dev-fe2923afc12490e92237d23fc0b29f31da72a4f9.zip | |
net: sched: traverse classifiers in chain with tcf_get_next_proto()
All users of chain->filters_chain rely on rtnl lock and assume that no new
classifier instances are added when traversing the list. Use
tcf_get_next_proto() to traverse filters list without relying on rtnl
mutex. This function iterates over classifiers by taking reference to
current iterator classifier only and doesn't assume external
synchronization of filters list.
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/pkt_cls.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h index 38bee7dd21d1..e5dafa5ee1b2 100644 --- a/include/net/pkt_cls.h +++ b/include/net/pkt_cls.h @@ -46,6 +46,8 @@ struct tcf_chain *tcf_chain_get_by_act(struct tcf_block *block, void tcf_chain_put_by_act(struct tcf_chain *chain); struct tcf_chain *tcf_get_next_chain(struct tcf_block *block, struct tcf_chain *chain); +struct tcf_proto *tcf_get_next_proto(struct tcf_chain *chain, + struct tcf_proto *tp); void tcf_block_netif_keep_dst(struct tcf_block *block); int tcf_block_get(struct tcf_block **p_block, struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q, |