Commit b7fe4ab8 authored by Pieter Jansen van Vuuren's avatar Pieter Jansen van Vuuren Committed by David S. Miller
Browse files

net/sched: extend matchall offload for hardware statistics



Introduce a new command for matchall classifiers that allows hardware
to update statistics.

Signed-off-by: default avatarPieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8c8cfc6e
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+2 −0
Original line number Diff line number Diff line
@@ -760,12 +760,14 @@ tc_cls_flower_offload_flow_rule(struct tc_cls_flower_offload *tc_flow_cmd)
enum tc_matchall_command {
	TC_CLSMATCHALL_REPLACE,
	TC_CLSMATCHALL_DESTROY,
	TC_CLSMATCHALL_STATS,
};

struct tc_cls_matchall_offload {
	struct tc_cls_common_offload common;
	enum tc_matchall_command command;
	struct flow_rule *rule;
	struct flow_stats stats;
	unsigned long cookie;
};

+20 −0
Original line number Diff line number Diff line
@@ -321,6 +321,23 @@ static int mall_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb,
	return 0;
}

static void mall_stats_hw_filter(struct tcf_proto *tp,
				 struct cls_mall_head *head,
				 unsigned long cookie)
{
	struct tc_cls_matchall_offload cls_mall = {};
	struct tcf_block *block = tp->chain->block;

	tc_cls_common_offload_init(&cls_mall.common, tp, head->flags, NULL);
	cls_mall.command = TC_CLSMATCHALL_STATS;
	cls_mall.cookie = cookie;

	tc_setup_cb_call(block, TC_SETUP_CLSMATCHALL, &cls_mall, false);

	tcf_exts_stats_update(&head->exts, cls_mall.stats.bytes,
			      cls_mall.stats.pkts, cls_mall.stats.lastused);
}

static int mall_dump(struct net *net, struct tcf_proto *tp, void *fh,
		     struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
{
@@ -332,6 +349,9 @@ static int mall_dump(struct net *net, struct tcf_proto *tp, void *fh,
	if (!head)
		return skb->len;

	if (!tc_skip_hw(head->flags))
		mall_stats_hw_filter(tp, head, (unsigned long)head);

	t->tcm_handle = head->handle;

	nest = nla_nest_start_noflag(skb, TCA_OPTIONS);