Commit b15e7a6e authored by Vlad Buslov's avatar Vlad Buslov Committed by David S. Miller
Browse files

net: sched: don't take rtnl lock during flow_action setup 



Refactor tc_setup_flow_action() function not to use rtnl lock and remove
'rtnl_held' argument that is no longer needed.

Signed-off-by: default avatarVlad Buslov <vladbu@mellanox.com>
Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 107f2d50

include/net/pkt_cls.h

+1 −1
Original line number Diff line number Diff line
@@ -509,7 +509,7 @@ tcf_match_indev(struct sk_buff *skb, int ifindex) 
}



int tc_setup_flow_action(struct flow_action *flow_action,

			 const struct tcf_exts *exts, bool rtnl_held);

			 const struct tcf_exts *exts);

void tc_cleanup_flow_action(struct flow_action *flow_action);



int tc_setup_cb_call(struct tcf_block *block, enum tc_setup_type type,

net/sched/cls_api.c

+1 −7
Original line number Diff line number Diff line
@@ -3433,7 +3433,7 @@ static void tcf_sample_get_group(struct flow_action_entry *entry, 
}



int tc_setup_flow_action(struct flow_action *flow_action,

			 const struct tcf_exts *exts, bool rtnl_held)

			 const struct tcf_exts *exts)

{

	struct tc_action *act;

	int i, j, k, err = 0;
@@ -3441,9 +3441,6 @@ int tc_setup_flow_action(struct flow_action *flow_action, 
	if (!exts)

		return 0;



	if (!rtnl_held)

		rtnl_lock();



	j = 0;

	tcf_exts_for_each_action(i, act, exts) {

		struct flow_action_entry *entry;
@@ -3577,9 +3574,6 @@ int tc_setup_flow_action(struct flow_action *flow_action, 
	}



err_out:

	if (!rtnl_held)

		rtnl_unlock();



	if (err)

		tc_cleanup_flow_action(flow_action);

net/sched/cls_flower.c

+2 −4
Original line number Diff line number Diff line
@@ -449,8 +449,7 @@ static int fl_hw_replace_filter(struct tcf_proto *tp, 
	cls_flower.rule->match.key = &f->mkey;

	cls_flower.classid = f->res.classid;



	err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts,

				   rtnl_held);

	err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);

	if (err) {

		kfree(cls_flower.rule);

		if (skip_sw) {
@@ -2000,8 +1999,7 @@ static int fl_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb, 
		cls_flower.rule->match.mask = &f->mask->key;

		cls_flower.rule->match.key = &f->mkey;



		err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts,

					   true);

		err = tc_setup_flow_action(&cls_flower.rule->action, &f->exts);

		if (err) {

			kfree(cls_flower.rule);

			if (tc_skip_sw(f->flags)) {

net/sched/cls_matchall.c

+2 −2
Original line number Diff line number Diff line
@@ -97,7 +97,7 @@ static int mall_replace_hw_filter(struct tcf_proto *tp, 
	cls_mall.command = TC_CLSMATCHALL_REPLACE;

	cls_mall.cookie = cookie;



	err = tc_setup_flow_action(&cls_mall.rule->action, &head->exts, true);

	err = tc_setup_flow_action(&cls_mall.rule->action, &head->exts);

	if (err) {

		kfree(cls_mall.rule);

		mall_destroy_hw_filter(tp, head, cookie, NULL);
@@ -302,7 +302,7 @@ static int mall_reoffload(struct tcf_proto *tp, bool add, flow_setup_cb_t *cb, 
		TC_CLSMATCHALL_REPLACE : TC_CLSMATCHALL_DESTROY;

	cls_mall.cookie = (unsigned long)head;



	err = tc_setup_flow_action(&cls_mall.rule->action, &head->exts, true);

	err = tc_setup_flow_action(&cls_mall.rule->action, &head->exts);

	if (err) {

		kfree(cls_mall.rule);

		if (add && tc_skip_sw(head->flags)) {

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