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net: sch: api: add extack support in tcf_block_get

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This patch adds extack support for the function tcf_block_get which is
a common used function in the tc subsystem. Callers which are interested
in the receiving error can assign extack to get a more detailed
information why tcf_block_get failed.

Cc: David Ahern <dsahern@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Aring
2017-12-20 12:35:19 -05:00
committed by David S. Miller
parent e9bc3fa28b
commit 8d1a77f974
15 changed files with 36 additions and 25 deletions
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6
include/net/pkt_cls.h
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@@ -39,9 +39,11 @@ struct tcf_chain *tcf_chain_get(struct tcf_block *block, u32 chain_index,
bool create);
void tcf_chain_put(struct tcf_chain *chain);
int tcf_block_get(struct tcf_block **p_block,
struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q);
struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
struct netlink_ext_ack *extack);
int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
struct tcf_block_ext_info *ei);
struct tcf_block_ext_info *ei,
struct netlink_ext_ack *extack);
void tcf_block_put(struct tcf_block *block);
void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
struct tcf_block_ext_info *ei);