diff options
| author | Alexander Aring <aring@mojatatu.com> | 2017-12-20 20:35:19 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-21 20:32:51 +0300 |
| commit | 8d1a77f974ca61d39afa5bf0aeab210525d31475 (patch) | |
| tree | 29d15c7f45bec6fa4579b2a5a5ef8fff13f232e4 /net/sched/cls_api.c | |
| parent | e9bc3fa28bae7612f41e3538f241a2f87f629c94 (diff) | |
| download | linux-8d1a77f974ca61d39afa5bf0aeab210525d31475.tar.xz | |
net: sch: api: add extack support in tcf_block_get
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>
Diffstat (limited to 'net/sched/cls_api.c')
| -rw-r--r-- | net/sched/cls_api.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 22b977d40e1d..4591b87eaab5 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -281,20 +281,24 @@ static void tcf_block_offload_unbind(struct tcf_block *block, struct Qdisc *q, } 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) { struct tcf_block *block = kzalloc(sizeof(*block), GFP_KERNEL); struct tcf_chain *chain; int err; - if (!block) + if (!block) { + NL_SET_ERR_MSG(extack, "Memory allocation for block failed"); return -ENOMEM; + } INIT_LIST_HEAD(&block->chain_list); INIT_LIST_HEAD(&block->cb_list); /* Create chain 0 by default, it has to be always present. */ chain = tcf_chain_create(block, 0); if (!chain) { + NL_SET_ERR_MSG(extack, "Failed to create new tcf chain"); err = -ENOMEM; goto err_chain_create; } @@ -321,7 +325,8 @@ static void tcf_chain_head_change_dflt(struct tcf_proto *tp_head, void *priv) } 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) { struct tcf_block_ext_info ei = { .chain_head_change = tcf_chain_head_change_dflt, @@ -329,7 +334,7 @@ int tcf_block_get(struct tcf_block **p_block, }; WARN_ON(!p_filter_chain); - return tcf_block_get_ext(p_block, q, &ei); + return tcf_block_get_ext(p_block, q, &ei, extack); } EXPORT_SYMBOL(tcf_block_get); |