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net: sched: introduce per-egress action device callbacks

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Introduce infrastructure that allows drivers to register callbacks that
are called whenever tc would offload inserted rule and specified device
acts as tc action egress device.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2017-10-11 09:41:08 +02:00 • committed by David S. Miller
parent 843e79d05a
commit b3f55bdda8
4 changed files with 286 additions and 0 deletions
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30
net/sched/cls_api.c
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@ -1026,6 +1026,36 @@ int tcf_exts_get_dev(struct net_device *dev, struct tcf_exts *exts,
}
EXPORT_SYMBOL(tcf_exts_get_dev);
int tcf_exts_egdev_cb_call(struct tcf_exts *exts, enum tc_setup_type type,
void *type_data, bool err_stop)
{
int ok_count = 0;
#ifdef CONFIG_NET_CLS_ACT
const struct tc_action *a;
struct net_device *dev;
LIST_HEAD(actions);
int ret;
if (!tcf_exts_has_actions(exts))
return 0;
tcf_exts_to_list(exts, &actions);
list_for_each_entry(a, &actions, list) {
if (!a->ops->get_dev)
continue;
dev = a->ops->get_dev(a);
if (!dev || !tc_can_offload(dev))
continue;
ret = tc_setup_cb_egdev_call(dev, type, type_data, err_stop);
if (ret < 0)
return ret;
ok_count += ret;
}
#endif
return ok_count;
}
EXPORT_SYMBOL(tcf_exts_egdev_cb_call);
static int __init tc_filter_init(void)
{
rtnl_register(PF_UNSPEC, RTM_NEWTFILTER, tc_ctl_tfilter, NULL, 0);