[thirdparty/linux.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_handle *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_handle *
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_handle *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, 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_rules(priv->fs.tc.t, spec,
				   action, flow_tag,
				   &dest, 1);

	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_handle *
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_handle *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_rules(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_egress_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 |
					MLX5_FLOW_CONTEXT_ACTION_COUNT;
			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_handle *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_rules(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;
74491de9	50	struct mlx5_flow_handle *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
74491de9 MB	57	static struct mlx5_flow_handle *
	58	mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
	59	struct mlx5_flow_spec *spec,
	60	u32 action, u32 flow_tag)
e8f887ac	61	{
aad7e08d AV	62	struct mlx5_core_dev *dev = priv->mdev;
	63	struct mlx5_flow_destination dest = { 0 };
	64	struct mlx5_fc *counter = NULL;
74491de9	65	struct mlx5_flow_handle *rule;
e8f887ac AV	66	bool table_created = false;
e8f887ac AV	67
aad7e08d AV	68	if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
	69	dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
	70	dest.ft = priv->fs.vlan.ft.t;
55130287	71	} else if (action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
aad7e08d AV	72	counter = mlx5_fc_create(dev, true);
	73	if (IS_ERR(counter))
	74	return ERR_CAST(counter);
	75
	76	dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
	77	dest.counter = counter;
	78	}
	79
acff797c MG	80	if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
	81	priv->fs.tc.t =
	82	mlx5_create_auto_grouped_flow_table(priv->fs.ns,
	83	MLX5E_TC_PRIO,
	84	MLX5E_TC_TABLE_NUM_ENTRIES,
	85	MLX5E_TC_TABLE_NUM_GROUPS,
c9f1b073	86	0, 0);
acff797c	87	if (IS_ERR(priv->fs.tc.t)) {
e8f887ac AV	88	netdev_err(priv->netdev,
e8f887ac AV	89	"Failed to create tc offload table\n");
aad7e08d AV	90	rule = ERR_CAST(priv->fs.tc.t);
aad7e08d AV	91	goto err_create_ft;
e8f887ac AV	92	}
	93
	94	table_created = true;
	95	}
	96
c5bb1730	97	spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
74491de9 MB	98	rule = mlx5_add_flow_rules(priv->fs.tc.t, spec,
	99	action, flow_tag,
	100	&dest, 1);
aad7e08d AV	101
	102	if (IS_ERR(rule))
	103	goto err_add_rule;
	104
	105	return rule;
e8f887ac	106
aad7e08d AV	107	err_add_rule:
aad7e08d AV	108	if (table_created) {
acff797c MG	109	mlx5_destroy_flow_table(priv->fs.tc.t);
acff797c MG	110	priv->fs.tc.t = NULL;
e8f887ac	111	}
aad7e08d AV	112	err_create_ft:
aad7e08d AV	113	mlx5_fc_destroy(dev, counter);
e8f887ac AV	114
	115	return rule;
	116	}
	117
74491de9 MB	118	static struct mlx5_flow_handle *
	119	mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
	120	struct mlx5_flow_spec *spec,
	121	struct mlx5_esw_flow_attr *attr)
adb4c123 OG	122	{
adb4c123 OG	123	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
8b32580d OG	124	int err;
	125
	126	err = mlx5_eswitch_add_vlan_action(esw, attr);
	127	if (err)
	128	return ERR_PTR(err);
adb4c123	129
776b12b6	130	return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
adb4c123 OG	131	}
adb4c123 OG	132
e8f887ac	133	static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
74491de9	134	struct mlx5_flow_handle *rule,
8b32580d	135	struct mlx5_esw_flow_attr *attr)
e8f887ac	136	{
8b32580d	137	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
aad7e08d AV	138	struct mlx5_fc *counter = NULL;
	139
	140	counter = mlx5_flow_rule_counter(rule);
	141
8b32580d OG	142	if (esw && esw->mode == SRIOV_OFFLOADS)
	143	mlx5_eswitch_del_vlan_action(esw, attr);
	144
74491de9	145	mlx5_del_flow_rules(rule);
e8f887ac	146
aad7e08d AV	147	mlx5_fc_destroy(priv->mdev, counter);
aad7e08d AV	148
5c40348c	149	if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
acff797c MG	150	mlx5_destroy_flow_table(priv->fs.tc.t);
acff797c MG	151	priv->fs.tc.t = NULL;
e8f887ac AV	152	}
	153	}
	154
c5bb1730	155	static int parse_cls_flower(struct mlx5e_priv priv, struct mlx5_flow_spec spec,
e3a2b7ed AV	156	struct tc_cls_flower_offload *f)
e3a2b7ed AV	157	{
c5bb1730 MG	158	void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
	159	outer_headers);
	160	void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
	161	outer_headers);
e3a2b7ed AV	162	u16 addr_type = 0;
	163	u8 ip_proto = 0;
	164
	165	if (f->dissector->used_keys &
	166	~(BIT(FLOW_DISSECTOR_KEY_CONTROL) \|
	167	BIT(FLOW_DISSECTOR_KEY_BASIC) \|
	168	BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) \|
095b6cfd	169	BIT(FLOW_DISSECTOR_KEY_VLAN) \|
e3a2b7ed AV	170	BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) \|
	171	BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) \|
	172	BIT(FLOW_DISSECTOR_KEY_PORTS))) {
	173	netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
	174	f->dissector->used_keys);
	175	return -EOPNOTSUPP;
	176	}
	177
	178	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
	179	struct flow_dissector_key_control *key =
	180	skb_flow_dissector_target(f->dissector,
1dbd0d37	181	FLOW_DISSECTOR_KEY_CONTROL,
e3a2b7ed AV	182	f->key);
	183	addr_type = key->addr_type;
	184	}
	185
	186	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
	187	struct flow_dissector_key_basic *key =
	188	skb_flow_dissector_target(f->dissector,
	189	FLOW_DISSECTOR_KEY_BASIC,
	190	f->key);
	191	struct flow_dissector_key_basic *mask =
	192	skb_flow_dissector_target(f->dissector,
	193	FLOW_DISSECTOR_KEY_BASIC,
	194	f->mask);
	195	ip_proto = key->ip_proto;
	196
	197	MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
	198	ntohs(mask->n_proto));
	199	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
	200	ntohs(key->n_proto));
	201
	202	MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
	203	mask->ip_proto);
	204	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
	205	key->ip_proto);
	206	}
	207
	208	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
	209	struct flow_dissector_key_eth_addrs *key =
	210	skb_flow_dissector_target(f->dissector,
	211	FLOW_DISSECTOR_KEY_ETH_ADDRS,
	212	f->key);
	213	struct flow_dissector_key_eth_addrs *mask =
	214	skb_flow_dissector_target(f->dissector,
	215	FLOW_DISSECTOR_KEY_ETH_ADDRS,
	216	f->mask);
	217
	218	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	219	dmac_47_16),
	220	mask->dst);
	221	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	222	dmac_47_16),
	223	key->dst);
	224
	225	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	226	smac_47_16),
	227	mask->src);
	228	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	229	smac_47_16),
	230	key->src);
	231	}
	232
095b6cfd OG	233	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
	234	struct flow_dissector_key_vlan *key =
	235	skb_flow_dissector_target(f->dissector,
	236	FLOW_DISSECTOR_KEY_VLAN,
	237	f->key);
	238	struct flow_dissector_key_vlan *mask =
	239	skb_flow_dissector_target(f->dissector,
	240	FLOW_DISSECTOR_KEY_VLAN,
	241	f->mask);
	242	if (mask->vlan_id) {
	243	MLX5_SET(fte_match_set_lyr_2_4, headers_c, vlan_tag, 1);
	244	MLX5_SET(fte_match_set_lyr_2_4, headers_v, vlan_tag, 1);
	245
	246	MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
	247	MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
	248	}
	249	}
	250
e3a2b7ed AV	251	if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
	252	struct flow_dissector_key_ipv4_addrs *key =
	253	skb_flow_dissector_target(f->dissector,
	254	FLOW_DISSECTOR_KEY_IPV4_ADDRS,
	255	f->key);
	256	struct flow_dissector_key_ipv4_addrs *mask =
	257	skb_flow_dissector_target(f->dissector,
	258	FLOW_DISSECTOR_KEY_IPV4_ADDRS,
	259	f->mask);
	260
	261	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	262	src_ipv4_src_ipv6.ipv4_layout.ipv4),
	263	&mask->src, sizeof(mask->src));
	264	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	265	src_ipv4_src_ipv6.ipv4_layout.ipv4),
	266	&key->src, sizeof(key->src));
	267	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	268	dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
	269	&mask->dst, sizeof(mask->dst));
	270	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	271	dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
	272	&key->dst, sizeof(key->dst));
	273	}
	274
	275	if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
	276	struct flow_dissector_key_ipv6_addrs *key =
	277	skb_flow_dissector_target(f->dissector,
	278	FLOW_DISSECTOR_KEY_IPV6_ADDRS,
	279	f->key);
	280	struct flow_dissector_key_ipv6_addrs *mask =
	281	skb_flow_dissector_target(f->dissector,
	282	FLOW_DISSECTOR_KEY_IPV6_ADDRS,
	283	f->mask);
	284
	285	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	286	src_ipv4_src_ipv6.ipv6_layout.ipv6),
	287	&mask->src, sizeof(mask->src));
	288	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	289	src_ipv4_src_ipv6.ipv6_layout.ipv6),
	290	&key->src, sizeof(key->src));
	291
	292	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	293	dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
	294	&mask->dst, sizeof(mask->dst));
	295	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	296	dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
	297	&key->dst, sizeof(key->dst));
	298	}
	299
	300	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
	301	struct flow_dissector_key_ports *key =
	302	skb_flow_dissector_target(f->dissector,
	303	FLOW_DISSECTOR_KEY_PORTS,
	304	f->key);
	305	struct flow_dissector_key_ports *mask =
	306	skb_flow_dissector_target(f->dissector,
	307	FLOW_DISSECTOR_KEY_PORTS,
	308	f->mask);
	309	switch (ip_proto) {
	310	case IPPROTO_TCP:
	311	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
	312	tcp_sport, ntohs(mask->src));
	313	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
	314	tcp_sport, ntohs(key->src));
315
316	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
317	tcp_dport, ntohs(mask->dst));
318	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
319	tcp_dport, ntohs(key->dst));
320	break;
321
322	case IPPROTO_UDP:
323	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
324	udp_sport, ntohs(mask->src));
325	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
326	udp_sport, ntohs(key->src));
327
328	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
329	udp_dport, ntohs(mask->dst));
330	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
331	udp_dport, ntohs(key->dst));
332	break;
333	default:
334	netdev_err(priv->netdev,
335	"Only UDP and TCP transport are supported\n");
336	return -EINVAL;
337	}
338	}
339
340	return 0;
341	}
342
5c40348c OG	343	static int parse_tc_nic_actions(struct mlx5e_priv priv, struct tcf_exts exts,
5c40348c OG	344	u32 action, u32 flow_tag)
e3a2b7ed AV	345	{
e3a2b7ed AV	346	const struct tc_action *a;
22dc13c8	347	LIST_HEAD(actions);
e3a2b7ed AV	348
	349	if (tc_no_actions(exts))
	350	return -EINVAL;
	351
	352	*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
	353	*action = 0;
	354
22dc13c8 WC	355	tcf_exts_to_list(exts, &actions);
22dc13c8 WC	356	list_for_each_entry(a, &actions, list) {
e3a2b7ed AV	357	/* Only support a single action per rule */
	358	if (*action)
	359	return -EINVAL;
	360
	361	if (is_tcf_gact_shot(a)) {
	362	*action \|= MLX5_FLOW_CONTEXT_ACTION_DROP;
aad7e08d AV	363	if (MLX5_CAP_FLOWTABLE(priv->mdev,
	364	flow_table_properties_nic_receive.flow_counter))
	365	*action \|= MLX5_FLOW_CONTEXT_ACTION_COUNT;
e3a2b7ed AV	366	continue;
	367	}
	368
	369	if (is_tcf_skbedit_mark(a)) {
	370	u32 mark = tcf_skbedit_mark(a);
	371
	372	if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
	373	netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
	374	mark);
	375	return -EINVAL;
	376	}
	377
	378	*flow_tag = mark;
	379	*action \|= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
	380	continue;
	381	}
	382
	383	return -EINVAL;
	384	}
	385
	386	return 0;
	387	}
	388
03a9d11e	389	static int parse_tc_fdb_actions(struct mlx5e_priv priv, struct tcf_exts exts,
776b12b6	390	struct mlx5_esw_flow_attr *attr)
03a9d11e OG	391	{
03a9d11e OG	392	const struct tc_action *a;
22dc13c8	393	LIST_HEAD(actions);
03a9d11e OG	394
	395	if (tc_no_actions(exts))
	396	return -EINVAL;
	397
776b12b6 OG	398	memset(attr, 0, sizeof(*attr));
776b12b6 OG	399	attr->in_rep = priv->ppriv;
03a9d11e	400
22dc13c8 WC	401	tcf_exts_to_list(exts, &actions);
22dc13c8 WC	402	list_for_each_entry(a, &actions, list) {
03a9d11e	403	if (is_tcf_gact_shot(a)) {
8b32580d OG	404	attr->action \|= MLX5_FLOW_CONTEXT_ACTION_DROP \|
8b32580d OG	405	MLX5_FLOW_CONTEXT_ACTION_COUNT;
03a9d11e OG	406	continue;
	407	}
	408
5724b8b5	409	if (is_tcf_mirred_egress_redirect(a)) {
03a9d11e OG	410	int ifindex = tcf_mirred_ifindex(a);
	411	struct net_device *out_dev;
	412	struct mlx5e_priv *out_priv;
03a9d11e OG	413
	414	out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
	415
	416	if (!switchdev_port_same_parent_id(priv->netdev, out_dev)) {
	417	pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
	418	priv->netdev->name, out_dev->name);
	419	return -EINVAL;
	420	}
	421
e37a79e5 MB	422	attr->action \|= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST \|
e37a79e5 MB	423	MLX5_FLOW_CONTEXT_ACTION_COUNT;
03a9d11e	424	out_priv = netdev_priv(out_dev);
776b12b6	425	attr->out_rep = out_priv->ppriv;
03a9d11e OG	426	continue;
	427	}
	428
8b32580d OG	429	if (is_tcf_vlan(a)) {
	430	if (tcf_vlan_action(a) == VLAN_F_POP) {
	431	attr->action \|= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
	432	} else if (tcf_vlan_action(a) == VLAN_F_PUSH) {
	433	if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
	434	return -EOPNOTSUPP;
	435
	436	attr->action \|= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
	437	attr->vlan = tcf_vlan_push_vid(a);
	438	}
	439	continue;
	440	}
	441
03a9d11e OG	442	return -EINVAL;
	443	}
	444	return 0;
	445	}
	446
e3a2b7ed AV	447	int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
	448	struct tc_cls_flower_offload *f)
	449	{
acff797c	450	struct mlx5e_tc_table *tc = &priv->fs.tc;
e3a2b7ed	451	int err = 0;
776b12b6 OG	452	bool fdb_flow = false;
776b12b6 OG	453	u32 flow_tag, action;
e3a2b7ed	454	struct mlx5e_tc_flow *flow;
c5bb1730	455	struct mlx5_flow_spec *spec;
74491de9	456	struct mlx5_flow_handle *old = NULL;
d0debb76	457	struct mlx5_esw_flow_attr *old_attr = NULL;
adb4c123	458	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
e3a2b7ed	459
776b12b6 OG	460	if (esw && esw->mode == SRIOV_OFFLOADS)
	461	fdb_flow = true;
	462
e3a2b7ed AV	463	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
e3a2b7ed AV	464	tc->ht_params);
776b12b6	465	if (flow) {
e3a2b7ed	466	old = flow->rule;
8b32580d	467	old_attr = flow->attr;
776b12b6 OG	468	} else {
	469	if (fdb_flow)
	470	flow = kzalloc(sizeof(*flow) + sizeof(struct mlx5_esw_flow_attr),
	471	GFP_KERNEL);
	472	else
	473	flow = kzalloc(sizeof(*flow), GFP_KERNEL);
	474	}
e3a2b7ed	475
c5bb1730 MG	476	spec = mlx5_vzalloc(sizeof(*spec));
c5bb1730 MG	477	if (!spec \|\| !flow) {
e3a2b7ed AV	478	err = -ENOMEM;
	479	goto err_free;
	480	}
	481
	482	flow->cookie = f->cookie;
	483
c5bb1730	484	err = parse_cls_flower(priv, spec, f);
e3a2b7ed AV	485	if (err < 0)
	486	goto err_free;
	487
776b12b6 OG	488	if (fdb_flow) {
	489	flow->attr = (struct mlx5_esw_flow_attr *)(flow + 1);
	490	err = parse_tc_fdb_actions(priv, f->exts, flow->attr);
adb4c123 OG	491	if (err < 0)
adb4c123 OG	492	goto err_free;
776b12b6	493	flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, flow->attr);
adb4c123 OG	494	} else {
	495	err = parse_tc_nic_actions(priv, f->exts, &action, &flow_tag);
	496	if (err < 0)
	497	goto err_free;
	498	flow->rule = mlx5e_tc_add_nic_flow(priv, spec, action, flow_tag);
	499	}
e3a2b7ed	500
e3a2b7ed AV	501	if (IS_ERR(flow->rule)) {
e3a2b7ed AV	502	err = PTR_ERR(flow->rule);
5c40348c	503	goto err_free;
e3a2b7ed AV	504	}
e3a2b7ed AV	505
5c40348c OG	506	err = rhashtable_insert_fast(&tc->ht, &flow->node,
	507	tc->ht_params);
	508	if (err)
	509	goto err_del_rule;
	510
e3a2b7ed	511	if (old)
8b32580d	512	mlx5e_tc_del_flow(priv, old, old_attr);
e3a2b7ed AV	513
	514	goto out;
	515
5c40348c	516	err_del_rule:
74491de9	517	mlx5_del_flow_rules(flow->rule);
e3a2b7ed AV	518
	519	err_free:
	520	if (!old)
	521	kfree(flow);
	522	out:
c5bb1730	523	kvfree(spec);
e3a2b7ed AV	524	return err;
	525	}
	526
	527	int mlx5e_delete_flower(struct mlx5e_priv *priv,
	528	struct tc_cls_flower_offload *f)
	529	{
	530	struct mlx5e_tc_flow *flow;
acff797c	531	struct mlx5e_tc_table *tc = &priv->fs.tc;
e3a2b7ed AV	532
	533	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
	534	tc->ht_params);
	535	if (!flow)
	536	return -EINVAL;
	537
	538	rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
	539
8b32580d	540	mlx5e_tc_del_flow(priv, flow->rule, flow->attr);
e3a2b7ed AV	541
	542	kfree(flow);
	543
	544	return 0;
	545	}
	546
aad7e08d AV	547	int mlx5e_stats_flower(struct mlx5e_priv *priv,
	548	struct tc_cls_flower_offload *f)
	549	{
	550	struct mlx5e_tc_table *tc = &priv->fs.tc;
	551	struct mlx5e_tc_flow *flow;
	552	struct tc_action *a;
	553	struct mlx5_fc *counter;
22dc13c8	554	LIST_HEAD(actions);
aad7e08d AV	555	u64 bytes;
	556	u64 packets;
	557	u64 lastuse;
	558
	559	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
	560	tc->ht_params);
	561	if (!flow)
	562	return -EINVAL;
	563
	564	counter = mlx5_flow_rule_counter(flow->rule);
	565	if (!counter)
	566	return 0;
	567
	568	mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
	569
22dc13c8 WC	570	tcf_exts_to_list(f->exts, &actions);
22dc13c8 WC	571	list_for_each_entry(a, &actions, list)
aad7e08d AV	572	tcf_action_stats_update(a, bytes, packets, lastuse);
	573
	574	return 0;
	575	}
	576
e8f887ac AV	577	static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
	578	.head_offset = offsetof(struct mlx5e_tc_flow, node),
	579	.key_offset = offsetof(struct mlx5e_tc_flow, cookie),
	580	.key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
	581	.automatic_shrinking = true,
	582	};
	583
	584	int mlx5e_tc_init(struct mlx5e_priv *priv)
	585	{
acff797c	586	struct mlx5e_tc_table *tc = &priv->fs.tc;
e8f887ac AV	587
	588	tc->ht_params = mlx5e_tc_flow_ht_params;
	589	return rhashtable_init(&tc->ht, &tc->ht_params);
	590	}
	591
	592	static void _mlx5e_tc_del_flow(void ptr, void arg)
	593	{
	594	struct mlx5e_tc_flow *flow = ptr;
	595	struct mlx5e_priv *priv = arg;
	596
8b32580d	597	mlx5e_tc_del_flow(priv, flow->rule, flow->attr);
e8f887ac AV	598	kfree(flow);
	599	}
	600
	601	void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
	602	{
acff797c	603	struct mlx5e_tc_table *tc = &priv->fs.tc;
e8f887ac AV	604
	605	rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
	606
acff797c MG	607	if (!IS_ERR_OR_NULL(tc->t)) {
	608	mlx5_destroy_flow_table(tc->t);
	609	tc->t = NULL;
e8f887ac AV	610	}
e8f887ac AV	611	}