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net/sched: cls_flower: Hardware offloaded filters statistics support

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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: Amir Vadai <amirva@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amir Vadai 2016-05-13 12:55:37 +00:00 committed by David S. Miller
parent 9fea47d93b
commit 10cbc68434
2 changed files with 22 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

1
include/net/pkt_cls.h
View file

@ -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 {

21
net/sched/cls_flower.c
View file

@ -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)) ||