[patch net-next 1/2] net: sched: change name of zombie chain to "held_by_acts_only"
From: Jiri Pirko <jiri@resnulli.us>
Date: 2018-07-31 13:50:33
Subsystem:
networking [general], tc subsystem, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Jamal Hadi Salim, Jiri Pirko, Linus Torvalds
From: Jiri Pirko <redacted> As mentioned by Cong and Jakub during the review process, it is a bit odd to sometimes (act flow) create a new chain which would be immediately a "zombie". So just rename it to "held_by_acts_only". Signed-off-by: Jiri Pirko <redacted> Suggested-by: Cong Wang <redacted> Suggested-by: Jakub Kicinski <redacted> --- net/sched/cls_api.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index e20aad1987b8..2f78341f2888 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c@@ -272,11 +272,10 @@ static void tcf_chain_release_by_act(struct tcf_chain *chain) --chain->action_refcnt; } -static bool tcf_chain_is_zombie(struct tcf_chain *chain) +static bool tcf_chain_held_by_acts_only(struct tcf_chain *chain) { /* In case all the references are action references, this - * chain is a zombie and should not be listed in the chain - * dump list. + * chain should not be shown to the user. */ return chain->refcnt == chain->action_refcnt; }
@@ -1838,10 +1837,9 @@ static int tc_ctl_chain(struct sk_buff *skb, struct nlmsghdr *n, chain = tcf_chain_lookup(block, chain_index); if (n->nlmsg_type == RTM_NEWCHAIN) { if (chain) { - if (tcf_chain_is_zombie(chain)) { + if (tcf_chain_held_by_acts_only(chain)) { /* The chain exists only because there is - * some action referencing it, meaning it - * is a zombie. + * some action referencing it. */ tcf_chain_hold(chain); } else {
@@ -1860,7 +1858,7 @@ static int tc_ctl_chain(struct sk_buff *skb, struct nlmsghdr *n, } } } else { - if (!chain || tcf_chain_is_zombie(chain)) { + if (!chain || tcf_chain_held_by_acts_only(chain)) { NL_SET_ERR_MSG(extack, "Cannot find specified filter chain"); return -EINVAL; }
@@ -1988,7 +1986,7 @@ static int tc_dump_chain(struct sk_buff *skb, struct netlink_callback *cb) index++; continue; } - if (tcf_chain_is_zombie(chain)) + if (tcf_chain_held_by_acts_only(chain)) continue; err = tc_chain_fill_node(chain, net, skb, block, NETLINK_CB(cb->skb).portid,
--
2.14.4