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Commit 10cbc684 authored by Amir Vadai's avatar Amir Vadai Committed by David S. Miller
Browse files

net/sched: cls_flower: Hardware offloaded filters statistics support 



Introduce a new command in ndo_setup_tc() for hardware offloaded
filters, to call the NIC driver, and make it update the statistics.
This will be done before dumping the filter and its statistics.

Signed-off-by: default avatarAmir Vadai <amirva@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9fea47d9

include/net/pkt_cls.h

+1 −0
Original line number Diff line number Diff line
@@ -426,6 +426,7 @@ static inline bool tc_flags_valid(u32 flags) 
enum tc_fl_command {

	TC_CLSFLOWER_REPLACE,

	TC_CLSFLOWER_DESTROY,

	TC_CLSFLOWER_STATS,

};



struct tc_cls_flower_offload {

net/sched/cls_flower.c

+21 −0
Original line number Diff line number Diff line
@@ -210,6 +210,25 @@ static void fl_hw_replace_filter(struct tcf_proto *tp, 
	dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, &tc);

}



static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)

{

	struct net_device *dev = tp->q->dev_queue->dev;

	struct tc_cls_flower_offload offload = {0};

	struct tc_to_netdev tc;



	if (!tc_should_offload(dev, 0))

		return;



	offload.command = TC_CLSFLOWER_STATS;

	offload.cookie = (unsigned long)f;

	offload.exts = &f->exts;



	tc.type = TC_SETUP_CLSFLOWER;

	tc.cls_flower = &offload;



	dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, &tc);

}



static bool fl_destroy(struct tcf_proto *tp, bool force)

{

	struct cls_fl_head *head = rtnl_dereference(tp->root);
@@ -662,6 +681,8 @@ static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh, 
			goto nla_put_failure;

	}



	fl_hw_update_stats(tp, f);



	if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,

			    mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,

			    sizeof(key->eth.dst)) ||