diff options
| -rw-r--r-- | net/sched/cls_api.c | 55 |
1 files changed, 30 insertions, 25 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 90843b6a8fa9..cb7422af5e51 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -527,6 +527,31 @@ static struct tcf_block *tcf_block_lookup(struct net *net, u32 block_index) return idr_find(&tn->idr, block_index); } +static void tcf_block_flush_all_chains(struct tcf_block *block) +{ + struct tcf_chain *chain; + + /* Hold a refcnt for all chains, so that they don't disappear + * while we are iterating. + */ + list_for_each_entry(chain, &block->chain_list, list) + tcf_chain_hold(chain); + + list_for_each_entry(chain, &block->chain_list, list) + tcf_chain_flush(chain); +} + +static void tcf_block_put_all_chains(struct tcf_block *block) +{ + struct tcf_chain *chain, *tmp; + + /* At this point, all the chains should have refcnt >= 1. */ + list_for_each_entry_safe(chain, tmp, &block->chain_list, list) { + tcf_chain_put_explicitly_created(chain); + tcf_chain_put(chain); + } +} + /* Find tcf block. * Set q, parent, cl when appropriate. */ @@ -786,8 +811,6 @@ EXPORT_SYMBOL(tcf_block_get); void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, struct tcf_block_ext_info *ei) { - struct tcf_chain *chain, *tmp; - if (!block) return; tcf_chain0_head_change_cb_del(block, ei); @@ -804,32 +827,14 @@ void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q, if (tcf_block_shared(block)) tcf_block_remove(block, block->net); - - if (!free_block) { - /* Hold a refcnt for all chains, so that they don't - * disappear while we are iterating. - */ - list_for_each_entry(chain, &block->chain_list, list) - tcf_chain_hold(chain); - - list_for_each_entry(chain, &block->chain_list, list) - tcf_chain_flush(chain); - } - + if (!free_block) + tcf_block_flush_all_chains(block); tcf_block_offload_unbind(block, q, ei); - if (free_block) { + if (free_block) kfree(block); - } else { - /* At this point, all the chains should have - * refcnt >= 1. - */ - list_for_each_entry_safe(chain, tmp, &block->chain_list, - list) { - tcf_chain_put_explicitly_created(chain); - tcf_chain_put(chain); - } - } + else + tcf_block_put_all_chains(block); } else { tcf_block_offload_unbind(block, q, ei); } |