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net/sched: extend matchall offload for hardware statistics 

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

Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pieter Jansen van Vuuren 2019-05-04 04:46:23 -07:00 committed by David S. Miller
parent 8c8cfc6ed2
commit b7fe4ab8a6
2 changed files with 22 additions and 0 deletions
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2
include/net/pkt_cls.h
View File

@ -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
net/sched/cls_matchall.c
View File

@ -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);