[mirror_ubuntu-focal-kernel.git] / drivers / net / ethernet / mellanox / mlx5 / core / en_tc.c

/*
 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <net/flow_dissector.h>
#include <net/pkt_cls.h>
#include <net/tc_act/tc_gact.h>
#include <net/tc_act/tc_skbedit.h>
#include <linux/mlx5/fs.h>
#include <linux/mlx5/device.h>
#include <linux/rhashtable.h>
#include <net/switchdev.h>
#include <net/tc_act/tc_mirred.h>
#include <net/tc_act/tc_vlan.h>
#include "en.h"
#include "en_tc.h"
#include "eswitch.h"

struct mlx5e_tc_flow {
	struct rhash_head	node;
	u64			cookie;
	struct mlx5_flow_rule	*rule;
	struct mlx5_esw_flow_attr *attr;
};

#define MLX5E_TC_TABLE_NUM_ENTRIES 1024
#define MLX5E_TC_TABLE_NUM_GROUPS 4

static struct mlx5_flow_rule *mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
						    struct mlx5_flow_spec *spec,
						    u32 action, u32 flow_tag)
{
	struct mlx5_core_dev *dev = priv->mdev;
	struct mlx5_flow_destination dest = { 0 };
	struct mlx5_fc *counter = NULL;
	struct mlx5_flow_rule *rule;
	bool table_created = false;

	if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
		dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
		dest.ft = priv->fs.vlan.ft.t;
	} else if (action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
		counter = mlx5_fc_create(dev, true);
		if (IS_ERR(counter))
			return ERR_CAST(counter);

		dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
		dest.counter = counter;
	}

	if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
		priv->fs.tc.t =
			mlx5_create_auto_grouped_flow_table(priv->fs.ns,
							    MLX5E_TC_PRIO,
							    MLX5E_TC_TABLE_NUM_ENTRIES,
							    MLX5E_TC_TABLE_NUM_GROUPS,
							    0);
		if (IS_ERR(priv->fs.tc.t)) {
			netdev_err(priv->netdev,
				   "Failed to create tc offload table\n");
			rule = ERR_CAST(priv->fs.tc.t);
			goto err_create_ft;
		}

		table_created = true;
	}

	spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
	rule = mlx5_add_flow_rule(priv->fs.tc.t, spec,
				  action, flow_tag,
				  &dest);

	if (IS_ERR(rule))
		goto err_add_rule;

	return rule;

err_add_rule:
	if (table_created) {
		mlx5_destroy_flow_table(priv->fs.tc.t);
		priv->fs.tc.t = NULL;
	}
err_create_ft:
	mlx5_fc_destroy(dev, counter);

	return rule;
}

static struct mlx5_flow_rule *mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
						    struct mlx5_flow_spec *spec,
						    struct mlx5_esw_flow_attr *attr)
{
	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
	int err;

	err = mlx5_eswitch_add_vlan_action(esw, attr);
	if (err)
		return ERR_PTR(err);

	return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
}

static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
			      struct mlx5_flow_rule *rule,
			      struct mlx5_esw_flow_attr *attr)
{
	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
	struct mlx5_fc *counter = NULL;

	counter = mlx5_flow_rule_counter(rule);

	if (esw && esw->mode == SRIOV_OFFLOADS)
		mlx5_eswitch_del_vlan_action(esw, attr);

	mlx5_del_flow_rule(rule);

	mlx5_fc_destroy(priv->mdev, counter);

	if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
		mlx5_destroy_flow_table(priv->fs.tc.t);
		priv->fs.tc.t = NULL;
	}
}

static int parse_cls_flower(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec,
			    struct tc_cls_flower_offload *f)
{
	void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
				       outer_headers);
	void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
				       outer_headers);
	u16 addr_type = 0;
	u8 ip_proto = 0;

	if (f->dissector->used_keys &
	    ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
	      BIT(FLOW_DISSECTOR_KEY_BASIC) |
	      BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_VLAN) |
	      BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_PORTS))) {
		netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
			    f->dissector->used_keys);
		return -EOPNOTSUPP;
	}

	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
		struct flow_dissector_key_control *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_CONTROL,
						  f->key);
		addr_type = key->addr_type;
	}

	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
		struct flow_dissector_key_basic *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_BASIC,
						  f->key);
		struct flow_dissector_key_basic *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_BASIC,
						  f->mask);
		ip_proto = key->ip_proto;

		MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
			 ntohs(mask->n_proto));
		MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
			 ntohs(key->n_proto));

		MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
			 mask->ip_proto);
		MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
			 key->ip_proto);
	}

	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
		struct flow_dissector_key_eth_addrs *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ETH_ADDRS,
						  f->key);
		struct flow_dissector_key_eth_addrs *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ETH_ADDRS,
						  f->mask);

		ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
					     dmac_47_16),
				mask->dst);
		ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
					     dmac_47_16),
				key->dst);

		ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
					     smac_47_16),
				mask->src);
		ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
					     smac_47_16),
				key->src);
	}

	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
		struct flow_dissector_key_vlan *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_VLAN,
						  f->key);
		struct flow_dissector_key_vlan *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_VLAN,
						  f->mask);
		if (mask->vlan_id) {
			MLX5_SET(fte_match_set_lyr_2_4, headers_c, vlan_tag, 1);
			MLX5_SET(fte_match_set_lyr_2_4, headers_v, vlan_tag, 1);

			MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
			MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
		}
	}

	if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
		struct flow_dissector_key_ipv4_addrs *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_IPV4_ADDRS,
						  f->key);
		struct flow_dissector_key_ipv4_addrs *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_IPV4_ADDRS,
						  f->mask);

		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
				    src_ipv4_src_ipv6.ipv4_layout.ipv4),
		       &mask->src, sizeof(mask->src));
		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
				    src_ipv4_src_ipv6.ipv4_layout.ipv4),
		       &key->src, sizeof(key->src));
		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
				    dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
		       &mask->dst, sizeof(mask->dst));
		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
				    dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
		       &key->dst, sizeof(key->dst));
	}

	if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
		struct flow_dissector_key_ipv6_addrs *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_IPV6_ADDRS,
						  f->key);
		struct flow_dissector_key_ipv6_addrs *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_IPV6_ADDRS,
						  f->mask);

		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
				    src_ipv4_src_ipv6.ipv6_layout.ipv6),
		       &mask->src, sizeof(mask->src));
		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
				    src_ipv4_src_ipv6.ipv6_layout.ipv6),
		       &key->src, sizeof(key->src));

		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
				    dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
		       &mask->dst, sizeof(mask->dst));
		memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
				    dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
		       &key->dst, sizeof(key->dst));
	}

	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
		struct flow_dissector_key_ports *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_PORTS,
						  f->key);
		struct flow_dissector_key_ports *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_PORTS,
						  f->mask);
		switch (ip_proto) {
		case IPPROTO_TCP:
			MLX5_SET(fte_match_set_lyr_2_4, headers_c,
				 tcp_sport, ntohs(mask->src));
			MLX5_SET(fte_match_set_lyr_2_4, headers_v,
				 tcp_sport, ntohs(key->src));

			MLX5_SET(fte_match_set_lyr_2_4, headers_c,
				 tcp_dport, ntohs(mask->dst));
			MLX5_SET(fte_match_set_lyr_2_4, headers_v,
				 tcp_dport, ntohs(key->dst));
			break;

		case IPPROTO_UDP:
			MLX5_SET(fte_match_set_lyr_2_4, headers_c,
				 udp_sport, ntohs(mask->src));
			MLX5_SET(fte_match_set_lyr_2_4, headers_v,
				 udp_sport, ntohs(key->src));

			MLX5_SET(fte_match_set_lyr_2_4, headers_c,
				 udp_dport, ntohs(mask->dst));
			MLX5_SET(fte_match_set_lyr_2_4, headers_v,
				 udp_dport, ntohs(key->dst));
			break;
		default:
			netdev_err(priv->netdev,
				   "Only UDP and TCP transport are supported\n");
			return -EINVAL;
		}
	}

	return 0;
}

static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
				u32 *action, u32 *flow_tag)
{
	const struct tc_action *a;
	LIST_HEAD(actions);

	if (tc_no_actions(exts))
		return -EINVAL;

	*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
	*action = 0;

	tcf_exts_to_list(exts, &actions);
	list_for_each_entry(a, &actions, list) {
		/* Only support a single action per rule */
		if (*action)
			return -EINVAL;

		if (is_tcf_gact_shot(a)) {
			*action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
			if (MLX5_CAP_FLOWTABLE(priv->mdev,
					       flow_table_properties_nic_receive.flow_counter))
				*action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
			continue;
		}

		if (is_tcf_skbedit_mark(a)) {
			u32 mark = tcf_skbedit_mark(a);

			if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
				netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
					    mark);
				return -EINVAL;
			}

			*flow_tag = mark;
			*action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
			continue;
		}

		return -EINVAL;
	}

	return 0;
}

static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
				struct mlx5_esw_flow_attr *attr)
{
	const struct tc_action *a;
	LIST_HEAD(actions);

	if (tc_no_actions(exts))
		return -EINVAL;

	memset(attr, 0, sizeof(*attr));
	attr->in_rep = priv->ppriv;

	tcf_exts_to_list(exts, &actions);
	list_for_each_entry(a, &actions, list) {
		if (is_tcf_gact_shot(a)) {
			attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
					MLX5_FLOW_CONTEXT_ACTION_COUNT;
			continue;
		}

		if (is_tcf_mirred_redirect(a)) {
			int ifindex = tcf_mirred_ifindex(a);
			struct net_device *out_dev;
			struct mlx5e_priv *out_priv;

			out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);

			if (!switchdev_port_same_parent_id(priv->netdev, out_dev)) {
				pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
				       priv->netdev->name, out_dev->name);
				return -EINVAL;
			}

			attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
			out_priv = netdev_priv(out_dev);
			attr->out_rep = out_priv->ppriv;
			continue;
		}

		if (is_tcf_vlan(a)) {
			if (tcf_vlan_action(a) == VLAN_F_POP) {
				attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
			} else if (tcf_vlan_action(a) == VLAN_F_PUSH) {
				if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
					return -EOPNOTSUPP;

				attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
				attr->vlan = tcf_vlan_push_vid(a);
			}
			continue;
		}

		return -EINVAL;
	}
	return 0;
}

int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
			   struct tc_cls_flower_offload *f)
{
	struct mlx5e_tc_table *tc = &priv->fs.tc;
	int err = 0;
	bool fdb_flow = false;
	u32 flow_tag, action;
	struct mlx5e_tc_flow *flow;
	struct mlx5_flow_spec *spec;
	struct mlx5_flow_rule *old = NULL;
	struct mlx5_esw_flow_attr *old_attr = NULL;
	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;

	if (esw && esw->mode == SRIOV_OFFLOADS)
		fdb_flow = true;

	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
				      tc->ht_params);
	if (flow) {
		old = flow->rule;
		old_attr = flow->attr;
	} else {
		if (fdb_flow)
			flow = kzalloc(sizeof(*flow) + sizeof(struct mlx5_esw_flow_attr),
				       GFP_KERNEL);
		else
			flow = kzalloc(sizeof(*flow), GFP_KERNEL);
	}

	spec = mlx5_vzalloc(sizeof(*spec));
	if (!spec || !flow) {
		err = -ENOMEM;
		goto err_free;
	}

	flow->cookie = f->cookie;

	err = parse_cls_flower(priv, spec, f);
	if (err < 0)
		goto err_free;

	if (fdb_flow) {
		flow->attr  = (struct mlx5_esw_flow_attr *)(flow + 1);
		err = parse_tc_fdb_actions(priv, f->exts, flow->attr);
		if (err < 0)
			goto err_free;
		flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, flow->attr);
	} else {
		err = parse_tc_nic_actions(priv, f->exts, &action, &flow_tag);
		if (err < 0)
			goto err_free;
		flow->rule = mlx5e_tc_add_nic_flow(priv, spec, action, flow_tag);
	}

	if (IS_ERR(flow->rule)) {
		err = PTR_ERR(flow->rule);
		goto err_free;
	}

	err = rhashtable_insert_fast(&tc->ht, &flow->node,
				     tc->ht_params);
	if (err)
		goto err_del_rule;

	if (old)
		mlx5e_tc_del_flow(priv, old, old_attr);

	goto out;

err_del_rule:
	mlx5_del_flow_rule(flow->rule);

err_free:
	if (!old)
		kfree(flow);
out:
	kvfree(spec);
	return err;
}

int mlx5e_delete_flower(struct mlx5e_priv *priv,
			struct tc_cls_flower_offload *f)
{
	struct mlx5e_tc_flow *flow;
	struct mlx5e_tc_table *tc = &priv->fs.tc;

	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
				      tc->ht_params);
	if (!flow)
		return -EINVAL;

	rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);

	mlx5e_tc_del_flow(priv, flow->rule, flow->attr);

	kfree(flow);

	return 0;
}

int mlx5e_stats_flower(struct mlx5e_priv *priv,
		       struct tc_cls_flower_offload *f)
{
	struct mlx5e_tc_table *tc = &priv->fs.tc;
	struct mlx5e_tc_flow *flow;
	struct tc_action *a;
	struct mlx5_fc *counter;
	LIST_HEAD(actions);
	u64 bytes;
	u64 packets;
	u64 lastuse;

	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
				      tc->ht_params);
	if (!flow)
		return -EINVAL;

	counter = mlx5_flow_rule_counter(flow->rule);
	if (!counter)
		return 0;

	mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);

	tcf_exts_to_list(f->exts, &actions);
	list_for_each_entry(a, &actions, list)
		tcf_action_stats_update(a, bytes, packets, lastuse);

	return 0;
}

static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
	.head_offset = offsetof(struct mlx5e_tc_flow, node),
	.key_offset = offsetof(struct mlx5e_tc_flow, cookie),
	.key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
	.automatic_shrinking = true,
};

int mlx5e_tc_init(struct mlx5e_priv *priv)
{
	struct mlx5e_tc_table *tc = &priv->fs.tc;

	tc->ht_params = mlx5e_tc_flow_ht_params;
	return rhashtable_init(&tc->ht, &tc->ht_params);
}

static void _mlx5e_tc_del_flow(void *ptr, void *arg)
{
	struct mlx5e_tc_flow *flow = ptr;
	struct mlx5e_priv *priv = arg;

	mlx5e_tc_del_flow(priv, flow->rule, flow->attr);
	kfree(flow);
}

void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
{
	struct mlx5e_tc_table *tc = &priv->fs.tc;

	rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);

	if (!IS_ERR_OR_NULL(tc->t)) {
		mlx5_destroy_flow_table(tc->t);
		tc->t = NULL;
	}
}
Commit	Line	Data
e8f887ac AV	1	/*
	2	* Copyright (c) 2016, Mellanox Technologies. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
e3a2b7ed AV	33	#include <net/flow_dissector.h>
	34	#include <net/pkt_cls.h>
	35	#include <net/tc_act/tc_gact.h>
12185a9f	36	#include <net/tc_act/tc_skbedit.h>
e8f887ac AV	37	#include <linux/mlx5/fs.h>
	38	#include <linux/mlx5/device.h>
	39	#include <linux/rhashtable.h>
03a9d11e OG	40	#include <net/switchdev.h>
03a9d11e OG	41	#include <net/tc_act/tc_mirred.h>
776b12b6	42	#include <net/tc_act/tc_vlan.h>
e8f887ac AV	43	#include "en.h"
e8f887ac AV	44	#include "en_tc.h"
03a9d11e	45	#include "eswitch.h"
e8f887ac AV	46
	47	struct mlx5e_tc_flow {
	48	struct rhash_head node;
	49	u64 cookie;
	50	struct mlx5_flow_rule *rule;
776b12b6	51	struct mlx5_esw_flow_attr *attr;
e8f887ac AV	52	};
e8f887ac AV	53
acff797c MG	54	#define MLX5E_TC_TABLE_NUM_ENTRIES 1024
acff797c MG	55	#define MLX5E_TC_TABLE_NUM_GROUPS 4
e8f887ac	56
5c40348c OG	57	static struct mlx5_flow_rule mlx5e_tc_add_nic_flow(struct mlx5e_priv priv,
	58	struct mlx5_flow_spec *spec,
	59	u32 action, u32 flow_tag)
e8f887ac	60	{
aad7e08d AV	61	struct mlx5_core_dev *dev = priv->mdev;
	62	struct mlx5_flow_destination dest = { 0 };
	63	struct mlx5_fc *counter = NULL;
e8f887ac AV	64	struct mlx5_flow_rule *rule;
	65	bool table_created = false;
	66
aad7e08d AV	67	if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
	68	dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
	69	dest.ft = priv->fs.vlan.ft.t;
55130287	70	} else if (action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
aad7e08d AV	71	counter = mlx5_fc_create(dev, true);
	72	if (IS_ERR(counter))
	73	return ERR_CAST(counter);
	74
	75	dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
	76	dest.counter = counter;
	77	}
	78
acff797c MG	79	if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
	80	priv->fs.tc.t =
	81	mlx5_create_auto_grouped_flow_table(priv->fs.ns,
	82	MLX5E_TC_PRIO,
	83	MLX5E_TC_TABLE_NUM_ENTRIES,
	84	MLX5E_TC_TABLE_NUM_GROUPS,
d63cd286	85	0);
acff797c	86	if (IS_ERR(priv->fs.tc.t)) {
e8f887ac AV	87	netdev_err(priv->netdev,
e8f887ac AV	88	"Failed to create tc offload table\n");
aad7e08d AV	89	rule = ERR_CAST(priv->fs.tc.t);
aad7e08d AV	90	goto err_create_ft;
e8f887ac AV	91	}
	92
	93	table_created = true;
	94	}
	95
c5bb1730 MG	96	spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
c5bb1730 MG	97	rule = mlx5_add_flow_rule(priv->fs.tc.t, spec,
e8f887ac	98	action, flow_tag,
aad7e08d AV	99	&dest);
	100
	101	if (IS_ERR(rule))
	102	goto err_add_rule;
	103
	104	return rule;
e8f887ac	105
aad7e08d AV	106	err_add_rule:
aad7e08d AV	107	if (table_created) {
acff797c MG	108	mlx5_destroy_flow_table(priv->fs.tc.t);
acff797c MG	109	priv->fs.tc.t = NULL;
e8f887ac	110	}
aad7e08d AV	111	err_create_ft:
aad7e08d AV	112	mlx5_fc_destroy(dev, counter);
e8f887ac AV	113
	114	return rule;
	115	}
	116
adb4c123 OG	117	static struct mlx5_flow_rule mlx5e_tc_add_fdb_flow(struct mlx5e_priv priv,
adb4c123 OG	118	struct mlx5_flow_spec *spec,
776b12b6	119	struct mlx5_esw_flow_attr *attr)
adb4c123 OG	120	{
adb4c123 OG	121	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
8b32580d OG	122	int err;
	123
	124	err = mlx5_eswitch_add_vlan_action(esw, attr);
	125	if (err)
	126	return ERR_PTR(err);
adb4c123	127
776b12b6	128	return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
adb4c123 OG	129	}
adb4c123 OG	130
e8f887ac	131	static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
8b32580d OG	132	struct mlx5_flow_rule *rule,
8b32580d OG	133	struct mlx5_esw_flow_attr *attr)
e8f887ac	134	{
8b32580d	135	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
aad7e08d AV	136	struct mlx5_fc *counter = NULL;
	137
	138	counter = mlx5_flow_rule_counter(rule);
	139
8b32580d OG	140	if (esw && esw->mode == SRIOV_OFFLOADS)
	141	mlx5_eswitch_del_vlan_action(esw, attr);
	142
e8f887ac AV	143	mlx5_del_flow_rule(rule);
e8f887ac AV	144
aad7e08d AV	145	mlx5_fc_destroy(priv->mdev, counter);
aad7e08d AV	146
5c40348c	147	if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
acff797c MG	148	mlx5_destroy_flow_table(priv->fs.tc.t);
acff797c MG	149	priv->fs.tc.t = NULL;
e8f887ac AV	150	}
	151	}
	152
c5bb1730	153	static int parse_cls_flower(struct mlx5e_priv priv, struct mlx5_flow_spec spec,
e3a2b7ed AV	154	struct tc_cls_flower_offload *f)
e3a2b7ed AV	155	{
c5bb1730 MG	156	void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
	157	outer_headers);
	158	void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
	159	outer_headers);
e3a2b7ed AV	160	u16 addr_type = 0;
	161	u8 ip_proto = 0;
	162
	163	if (f->dissector->used_keys &
	164	~(BIT(FLOW_DISSECTOR_KEY_CONTROL) \|
	165	BIT(FLOW_DISSECTOR_KEY_BASIC) \|
	166	BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) \|
095b6cfd	167	BIT(FLOW_DISSECTOR_KEY_VLAN) \|
e3a2b7ed AV	168	BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) \|
	169	BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) \|
	170	BIT(FLOW_DISSECTOR_KEY_PORTS))) {
	171	netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
	172	f->dissector->used_keys);
	173	return -EOPNOTSUPP;
	174	}
	175
	176	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
	177	struct flow_dissector_key_control *key =
	178	skb_flow_dissector_target(f->dissector,
1dbd0d37	179	FLOW_DISSECTOR_KEY_CONTROL,
e3a2b7ed AV	180	f->key);
	181	addr_type = key->addr_type;
	182	}
	183
	184	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
	185	struct flow_dissector_key_basic *key =
	186	skb_flow_dissector_target(f->dissector,
	187	FLOW_DISSECTOR_KEY_BASIC,
	188	f->key);
	189	struct flow_dissector_key_basic *mask =
	190	skb_flow_dissector_target(f->dissector,
	191	FLOW_DISSECTOR_KEY_BASIC,
	192	f->mask);
	193	ip_proto = key->ip_proto;
	194
	195	MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
	196	ntohs(mask->n_proto));
	197	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
	198	ntohs(key->n_proto));
	199
	200	MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
	201	mask->ip_proto);
	202	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
	203	key->ip_proto);
	204	}
	205
	206	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
	207	struct flow_dissector_key_eth_addrs *key =
	208	skb_flow_dissector_target(f->dissector,
	209	FLOW_DISSECTOR_KEY_ETH_ADDRS,
	210	f->key);
	211	struct flow_dissector_key_eth_addrs *mask =
	212	skb_flow_dissector_target(f->dissector,
	213	FLOW_DISSECTOR_KEY_ETH_ADDRS,
	214	f->mask);
	215
	216	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	217	dmac_47_16),
	218	mask->dst);
	219	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	220	dmac_47_16),
	221	key->dst);
	222
	223	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	224	smac_47_16),
	225	mask->src);
	226	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	227	smac_47_16),
	228	key->src);
	229	}
	230
095b6cfd OG	231	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
	232	struct flow_dissector_key_vlan *key =
	233	skb_flow_dissector_target(f->dissector,
	234	FLOW_DISSECTOR_KEY_VLAN,
	235	f->key);
	236	struct flow_dissector_key_vlan *mask =
	237	skb_flow_dissector_target(f->dissector,
	238	FLOW_DISSECTOR_KEY_VLAN,
	239	f->mask);
	240	if (mask->vlan_id) {
	241	MLX5_SET(fte_match_set_lyr_2_4, headers_c, vlan_tag, 1);
	242	MLX5_SET(fte_match_set_lyr_2_4, headers_v, vlan_tag, 1);
	243
	244	MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
	245	MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
	246	}
	247	}
	248
e3a2b7ed AV	249	if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
	250	struct flow_dissector_key_ipv4_addrs *key =
	251	skb_flow_dissector_target(f->dissector,
	252	FLOW_DISSECTOR_KEY_IPV4_ADDRS,
	253	f->key);
	254	struct flow_dissector_key_ipv4_addrs *mask =
	255	skb_flow_dissector_target(f->dissector,
	256	FLOW_DISSECTOR_KEY_IPV4_ADDRS,
	257	f->mask);
	258
	259	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	260	src_ipv4_src_ipv6.ipv4_layout.ipv4),
	261	&mask->src, sizeof(mask->src));
	262	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	263	src_ipv4_src_ipv6.ipv4_layout.ipv4),
	264	&key->src, sizeof(key->src));
	265	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	266	dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
	267	&mask->dst, sizeof(mask->dst));
	268	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	269	dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
	270	&key->dst, sizeof(key->dst));
	271	}
	272
	273	if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
	274	struct flow_dissector_key_ipv6_addrs *key =
	275	skb_flow_dissector_target(f->dissector,
	276	FLOW_DISSECTOR_KEY_IPV6_ADDRS,
	277	f->key);
	278	struct flow_dissector_key_ipv6_addrs *mask =
	279	skb_flow_dissector_target(f->dissector,
	280	FLOW_DISSECTOR_KEY_IPV6_ADDRS,
	281	f->mask);
	282
	283	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	284	src_ipv4_src_ipv6.ipv6_layout.ipv6),
	285	&mask->src, sizeof(mask->src));
	286	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	287	src_ipv4_src_ipv6.ipv6_layout.ipv6),
	288	&key->src, sizeof(key->src));
	289
	290	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	291	dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
	292	&mask->dst, sizeof(mask->dst));
	293	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	294	dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
	295	&key->dst, sizeof(key->dst));
	296	}
	297
	298	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
	299	struct flow_dissector_key_ports *key =
	300	skb_flow_dissector_target(f->dissector,
	301	FLOW_DISSECTOR_KEY_PORTS,
	302	f->key);
	303	struct flow_dissector_key_ports *mask =
	304	skb_flow_dissector_target(f->dissector,
	305	FLOW_DISSECTOR_KEY_PORTS,
	306	f->mask);
	307	switch (ip_proto) {
	308	case IPPROTO_TCP:
	309	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
	310	tcp_sport, ntohs(mask->src));
	311	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
	312	tcp_sport, ntohs(key->src));
313
314	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
315	tcp_dport, ntohs(mask->dst));
316	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
317	tcp_dport, ntohs(key->dst));
318	break;
319
320	case IPPROTO_UDP:
321	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
322	udp_sport, ntohs(mask->src));
323	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
324	udp_sport, ntohs(key->src));
325
326	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
327	udp_dport, ntohs(mask->dst));
328	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
329	udp_dport, ntohs(key->dst));
330	break;
331	default:
332	netdev_err(priv->netdev,
333	"Only UDP and TCP transport are supported\n");
334	return -EINVAL;
335	}
336	}
337
338	return 0;
339	}
340
5c40348c OG	341	static int parse_tc_nic_actions(struct mlx5e_priv priv, struct tcf_exts exts,
5c40348c OG	342	u32 action, u32 flow_tag)
e3a2b7ed AV	343	{
e3a2b7ed AV	344	const struct tc_action *a;
22dc13c8	345	LIST_HEAD(actions);
e3a2b7ed AV	346
	347	if (tc_no_actions(exts))
	348	return -EINVAL;
	349
	350	*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
	351	*action = 0;
	352
22dc13c8 WC	353	tcf_exts_to_list(exts, &actions);
22dc13c8 WC	354	list_for_each_entry(a, &actions, list) {
e3a2b7ed AV	355	/* Only support a single action per rule */
	356	if (*action)
	357	return -EINVAL;
	358
	359	if (is_tcf_gact_shot(a)) {
	360	*action \|= MLX5_FLOW_CONTEXT_ACTION_DROP;
aad7e08d AV	361	if (MLX5_CAP_FLOWTABLE(priv->mdev,
	362	flow_table_properties_nic_receive.flow_counter))
	363	*action \|= MLX5_FLOW_CONTEXT_ACTION_COUNT;
e3a2b7ed AV	364	continue;
	365	}
	366
	367	if (is_tcf_skbedit_mark(a)) {
	368	u32 mark = tcf_skbedit_mark(a);
	369
	370	if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
	371	netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
	372	mark);
	373	return -EINVAL;
	374	}
	375
	376	*flow_tag = mark;
	377	*action \|= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
	378	continue;
	379	}
	380
	381	return -EINVAL;
	382	}
	383
	384	return 0;
	385	}
	386
03a9d11e	387	static int parse_tc_fdb_actions(struct mlx5e_priv priv, struct tcf_exts exts,
776b12b6	388	struct mlx5_esw_flow_attr *attr)
03a9d11e OG	389	{
03a9d11e OG	390	const struct tc_action *a;
22dc13c8	391	LIST_HEAD(actions);
03a9d11e OG	392
	393	if (tc_no_actions(exts))
	394	return -EINVAL;
	395
776b12b6 OG	396	memset(attr, 0, sizeof(*attr));
776b12b6 OG	397	attr->in_rep = priv->ppriv;
03a9d11e	398
22dc13c8 WC	399	tcf_exts_to_list(exts, &actions);
22dc13c8 WC	400	list_for_each_entry(a, &actions, list) {
03a9d11e	401	if (is_tcf_gact_shot(a)) {
8b32580d OG	402	attr->action \|= MLX5_FLOW_CONTEXT_ACTION_DROP \|
8b32580d OG	403	MLX5_FLOW_CONTEXT_ACTION_COUNT;
03a9d11e OG	404	continue;
	405	}
	406
	407	if (is_tcf_mirred_redirect(a)) {
	408	int ifindex = tcf_mirred_ifindex(a);
	409	struct net_device *out_dev;
	410	struct mlx5e_priv *out_priv;
03a9d11e OG	411
	412	out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
	413
	414	if (!switchdev_port_same_parent_id(priv->netdev, out_dev)) {
	415	pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
	416	priv->netdev->name, out_dev->name);
	417	return -EINVAL;
	418	}
	419
8b32580d	420	attr->action \|= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
03a9d11e	421	out_priv = netdev_priv(out_dev);
776b12b6	422	attr->out_rep = out_priv->ppriv;
03a9d11e OG	423	continue;
	424	}
	425
8b32580d OG	426	if (is_tcf_vlan(a)) {
	427	if (tcf_vlan_action(a) == VLAN_F_POP) {
	428	attr->action \|= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
	429	} else if (tcf_vlan_action(a) == VLAN_F_PUSH) {
	430	if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
	431	return -EOPNOTSUPP;
	432
	433	attr->action \|= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
	434	attr->vlan = tcf_vlan_push_vid(a);
	435	}
	436	continue;
	437	}
	438
03a9d11e OG	439	return -EINVAL;
	440	}
	441	return 0;
	442	}
	443
e3a2b7ed AV	444	int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
	445	struct tc_cls_flower_offload *f)
	446	{
acff797c	447	struct mlx5e_tc_table *tc = &priv->fs.tc;
e3a2b7ed	448	int err = 0;
776b12b6 OG	449	bool fdb_flow = false;
776b12b6 OG	450	u32 flow_tag, action;
e3a2b7ed	451	struct mlx5e_tc_flow *flow;
c5bb1730	452	struct mlx5_flow_spec *spec;
e3a2b7ed	453	struct mlx5_flow_rule *old = NULL;
d0debb76	454	struct mlx5_esw_flow_attr *old_attr = NULL;
adb4c123	455	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
e3a2b7ed	456
776b12b6 OG	457	if (esw && esw->mode == SRIOV_OFFLOADS)
	458	fdb_flow = true;
	459
e3a2b7ed AV	460	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
e3a2b7ed AV	461	tc->ht_params);
776b12b6	462	if (flow) {
e3a2b7ed	463	old = flow->rule;
8b32580d	464	old_attr = flow->attr;
776b12b6 OG	465	} else {
	466	if (fdb_flow)
	467	flow = kzalloc(sizeof(*flow) + sizeof(struct mlx5_esw_flow_attr),
	468	GFP_KERNEL);
	469	else
	470	flow = kzalloc(sizeof(*flow), GFP_KERNEL);
	471	}
e3a2b7ed	472
c5bb1730 MG	473	spec = mlx5_vzalloc(sizeof(*spec));
c5bb1730 MG	474	if (!spec \|\| !flow) {
e3a2b7ed AV	475	err = -ENOMEM;
	476	goto err_free;
	477	}
	478
	479	flow->cookie = f->cookie;
	480
c5bb1730	481	err = parse_cls_flower(priv, spec, f);
e3a2b7ed AV	482	if (err < 0)
	483	goto err_free;
	484
776b12b6 OG	485	if (fdb_flow) {
	486	flow->attr = (struct mlx5_esw_flow_attr *)(flow + 1);
	487	err = parse_tc_fdb_actions(priv, f->exts, flow->attr);
adb4c123 OG	488	if (err < 0)
adb4c123 OG	489	goto err_free;
776b12b6	490	flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, flow->attr);
adb4c123 OG	491	} else {
	492	err = parse_tc_nic_actions(priv, f->exts, &action, &flow_tag);
	493	if (err < 0)
	494	goto err_free;
	495	flow->rule = mlx5e_tc_add_nic_flow(priv, spec, action, flow_tag);
	496	}
e3a2b7ed	497
e3a2b7ed AV	498	if (IS_ERR(flow->rule)) {
e3a2b7ed AV	499	err = PTR_ERR(flow->rule);
5c40348c	500	goto err_free;
e3a2b7ed AV	501	}
e3a2b7ed AV	502
5c40348c OG	503	err = rhashtable_insert_fast(&tc->ht, &flow->node,
	504	tc->ht_params);
	505	if (err)
	506	goto err_del_rule;
	507
e3a2b7ed	508	if (old)
8b32580d	509	mlx5e_tc_del_flow(priv, old, old_attr);
e3a2b7ed AV	510
	511	goto out;
	512
5c40348c OG	513	err_del_rule:
5c40348c OG	514	mlx5_del_flow_rule(flow->rule);
e3a2b7ed AV	515
	516	err_free:
	517	if (!old)
	518	kfree(flow);
	519	out:
c5bb1730	520	kvfree(spec);
e3a2b7ed AV	521	return err;
	522	}
	523
	524	int mlx5e_delete_flower(struct mlx5e_priv *priv,
	525	struct tc_cls_flower_offload *f)
	526	{
	527	struct mlx5e_tc_flow *flow;
acff797c	528	struct mlx5e_tc_table *tc = &priv->fs.tc;
e3a2b7ed AV	529
	530	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
	531	tc->ht_params);
	532	if (!flow)
	533	return -EINVAL;
	534
	535	rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
	536
8b32580d	537	mlx5e_tc_del_flow(priv, flow->rule, flow->attr);
e3a2b7ed AV	538
	539	kfree(flow);
	540
	541	return 0;
	542	}
	543
aad7e08d AV	544	int mlx5e_stats_flower(struct mlx5e_priv *priv,
	545	struct tc_cls_flower_offload *f)
	546	{
	547	struct mlx5e_tc_table *tc = &priv->fs.tc;
	548	struct mlx5e_tc_flow *flow;
	549	struct tc_action *a;
	550	struct mlx5_fc *counter;
22dc13c8	551	LIST_HEAD(actions);
aad7e08d AV	552	u64 bytes;
	553	u64 packets;
	554	u64 lastuse;
	555
	556	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
	557	tc->ht_params);
	558	if (!flow)
	559	return -EINVAL;
	560
	561	counter = mlx5_flow_rule_counter(flow->rule);
	562	if (!counter)
	563	return 0;
	564
	565	mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
	566
22dc13c8 WC	567	tcf_exts_to_list(f->exts, &actions);
22dc13c8 WC	568	list_for_each_entry(a, &actions, list)
aad7e08d AV	569	tcf_action_stats_update(a, bytes, packets, lastuse);
	570
	571	return 0;
	572	}
	573
e8f887ac AV	574	static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
	575	.head_offset = offsetof(struct mlx5e_tc_flow, node),
	576	.key_offset = offsetof(struct mlx5e_tc_flow, cookie),
	577	.key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
	578	.automatic_shrinking = true,
	579	};
	580
	581	int mlx5e_tc_init(struct mlx5e_priv *priv)
	582	{
acff797c	583	struct mlx5e_tc_table *tc = &priv->fs.tc;
e8f887ac AV	584
	585	tc->ht_params = mlx5e_tc_flow_ht_params;
	586	return rhashtable_init(&tc->ht, &tc->ht_params);
	587	}
	588
	589	static void _mlx5e_tc_del_flow(void ptr, void arg)
	590	{
	591	struct mlx5e_tc_flow *flow = ptr;
	592	struct mlx5e_priv *priv = arg;
	593
8b32580d	594	mlx5e_tc_del_flow(priv, flow->rule, flow->attr);
e8f887ac AV	595	kfree(flow);
	596	}
	597
	598	void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
	599	{
acff797c	600	struct mlx5e_tc_table *tc = &priv->fs.tc;
e8f887ac AV	601
	602	rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
	603
acff797c MG	604	if (!IS_ERR_OR_NULL(tc->t)) {
	605	mlx5_destroy_flow_table(tc->t);
	606	tc->t = NULL;
e8f887ac AV	607	}
e8f887ac AV	608	}