[mirror_ubuntu-bionic-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 "en.h"
#include "en_tc.h"
#include "eswitch.h"

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

#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,
						    u32 action, u32 dst_vport)
{
	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
	struct mlx5_eswitch_rep *rep = priv->ppriv;
	u32 src_vport;

	src_vport = rep->vport;

	return mlx5_eswitch_add_offloaded_rule(esw, spec, action, src_vport, dst_vport);
}

static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
			      struct mlx5_flow_rule *rule)
{
	struct mlx5_fc *counter = NULL;

	counter = mlx5_flow_rule_counter(rule);

	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_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 (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,
				u32 *action, u32 *dest_vport)
{
	const struct tc_action *a;
	LIST_HEAD(actions);

	if (tc_no_actions(exts))
		return -EINVAL;

	*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 |
				  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;
			struct mlx5_eswitch_rep *out_rep;

			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;
			}

			out_priv = netdev_priv(out_dev);
			out_rep  = out_priv->ppriv;
			*dest_vport = out_rep->vport;
			*action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
			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;
	u32 flow_tag, action, dest_vport = 0;
	struct mlx5e_tc_flow *flow;
	struct mlx5_flow_spec *spec;
	struct mlx5_flow_rule *old = NULL;
	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;

	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
				      tc->ht_params);
	if (flow)
		old = flow->rule;
	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 (esw && esw->mode == SRIOV_OFFLOADS) {
		err = parse_tc_fdb_actions(priv, f->exts, &action, &dest_vport);
		if (err < 0)
			goto err_free;
		flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, action, dest_vport);
	} 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);

	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);

	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);
	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>
e8f887ac AV	42	#include "en.h"
e8f887ac AV	43	#include "en_tc.h"
03a9d11e	44	#include "eswitch.h"
e8f887ac AV	45
	46	struct mlx5e_tc_flow {
	47	struct rhash_head node;
	48	u64 cookie;
	49	struct mlx5_flow_rule *rule;
	50	};
	51
acff797c MG	52	#define MLX5E_TC_TABLE_NUM_ENTRIES 1024
acff797c MG	53	#define MLX5E_TC_TABLE_NUM_GROUPS 4
e8f887ac	54
5c40348c OG	55	static struct mlx5_flow_rule mlx5e_tc_add_nic_flow(struct mlx5e_priv priv,
	56	struct mlx5_flow_spec *spec,
	57	u32 action, u32 flow_tag)
e8f887ac	58	{
aad7e08d AV	59	struct mlx5_core_dev *dev = priv->mdev;
	60	struct mlx5_flow_destination dest = { 0 };
	61	struct mlx5_fc *counter = NULL;
e8f887ac AV	62	struct mlx5_flow_rule *rule;
	63	bool table_created = false;
	64
aad7e08d AV	65	if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
	66	dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
	67	dest.ft = priv->fs.vlan.ft.t;
55130287	68	} else if (action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
aad7e08d AV	69	counter = mlx5_fc_create(dev, true);
	70	if (IS_ERR(counter))
	71	return ERR_CAST(counter);
	72
	73	dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
	74	dest.counter = counter;
	75	}
	76
acff797c MG	77	if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
	78	priv->fs.tc.t =
	79	mlx5_create_auto_grouped_flow_table(priv->fs.ns,
	80	MLX5E_TC_PRIO,
	81	MLX5E_TC_TABLE_NUM_ENTRIES,
	82	MLX5E_TC_TABLE_NUM_GROUPS,
d63cd286	83	0);
acff797c	84	if (IS_ERR(priv->fs.tc.t)) {
e8f887ac AV	85	netdev_err(priv->netdev,
e8f887ac AV	86	"Failed to create tc offload table\n");
aad7e08d AV	87	rule = ERR_CAST(priv->fs.tc.t);
aad7e08d AV	88	goto err_create_ft;
e8f887ac AV	89	}
	90
	91	table_created = true;
	92	}
	93
c5bb1730 MG	94	spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
c5bb1730 MG	95	rule = mlx5_add_flow_rule(priv->fs.tc.t, spec,
e8f887ac	96	action, flow_tag,
aad7e08d AV	97	&dest);
	98
	99	if (IS_ERR(rule))
	100	goto err_add_rule;
	101
	102	return rule;
e8f887ac	103
aad7e08d AV	104	err_add_rule:
aad7e08d AV	105	if (table_created) {
acff797c MG	106	mlx5_destroy_flow_table(priv->fs.tc.t);
acff797c MG	107	priv->fs.tc.t = NULL;
e8f887ac	108	}
aad7e08d AV	109	err_create_ft:
aad7e08d AV	110	mlx5_fc_destroy(dev, counter);
e8f887ac AV	111
	112	return rule;
	113	}
	114
adb4c123 OG	115	static struct mlx5_flow_rule mlx5e_tc_add_fdb_flow(struct mlx5e_priv priv,
	116	struct mlx5_flow_spec *spec,
	117	u32 action, u32 dst_vport)
	118	{
	119	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
	120	struct mlx5_eswitch_rep *rep = priv->ppriv;
	121	u32 src_vport;
	122
9deb2241	123	src_vport = rep->vport;
adb4c123 OG	124
	125	return mlx5_eswitch_add_offloaded_rule(esw, spec, action, src_vport, dst_vport);
	126	}
	127
e8f887ac AV	128	static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
	129	struct mlx5_flow_rule *rule)
	130	{
aad7e08d AV	131	struct mlx5_fc *counter = NULL;
	132
	133	counter = mlx5_flow_rule_counter(rule);
	134
e8f887ac AV	135	mlx5_del_flow_rule(rule);
e8f887ac AV	136
aad7e08d AV	137	mlx5_fc_destroy(priv->mdev, counter);
aad7e08d AV	138
5c40348c	139	if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
acff797c MG	140	mlx5_destroy_flow_table(priv->fs.tc.t);
acff797c MG	141	priv->fs.tc.t = NULL;
e8f887ac AV	142	}
	143	}
	144
c5bb1730	145	static int parse_cls_flower(struct mlx5e_priv priv, struct mlx5_flow_spec spec,
e3a2b7ed AV	146	struct tc_cls_flower_offload *f)
e3a2b7ed AV	147	{
c5bb1730 MG	148	void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
	149	outer_headers);
	150	void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
	151	outer_headers);
e3a2b7ed AV	152	u16 addr_type = 0;
	153	u8 ip_proto = 0;
	154
	155	if (f->dissector->used_keys &
	156	~(BIT(FLOW_DISSECTOR_KEY_CONTROL) \|
	157	BIT(FLOW_DISSECTOR_KEY_BASIC) \|
	158	BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) \|
	159	BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) \|
	160	BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) \|
	161	BIT(FLOW_DISSECTOR_KEY_PORTS))) {
	162	netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
	163	f->dissector->used_keys);
	164	return -EOPNOTSUPP;
	165	}
	166
	167	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
	168	struct flow_dissector_key_control *key =
	169	skb_flow_dissector_target(f->dissector,
1dbd0d37	170	FLOW_DISSECTOR_KEY_CONTROL,
e3a2b7ed AV	171	f->key);
	172	addr_type = key->addr_type;
	173	}
	174
	175	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
	176	struct flow_dissector_key_basic *key =
	177	skb_flow_dissector_target(f->dissector,
	178	FLOW_DISSECTOR_KEY_BASIC,
	179	f->key);
	180	struct flow_dissector_key_basic *mask =
	181	skb_flow_dissector_target(f->dissector,
	182	FLOW_DISSECTOR_KEY_BASIC,
	183	f->mask);
	184	ip_proto = key->ip_proto;
	185
	186	MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
	187	ntohs(mask->n_proto));
	188	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
	189	ntohs(key->n_proto));
	190
	191	MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
	192	mask->ip_proto);
	193	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
	194	key->ip_proto);
	195	}
	196
	197	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
	198	struct flow_dissector_key_eth_addrs *key =
	199	skb_flow_dissector_target(f->dissector,
	200	FLOW_DISSECTOR_KEY_ETH_ADDRS,
	201	f->key);
	202	struct flow_dissector_key_eth_addrs *mask =
	203	skb_flow_dissector_target(f->dissector,
	204	FLOW_DISSECTOR_KEY_ETH_ADDRS,
	205	f->mask);
	206
	207	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	208	dmac_47_16),
	209	mask->dst);
	210	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	211	dmac_47_16),
	212	key->dst);
	213
	214	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	215	smac_47_16),
	216	mask->src);
	217	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
	218	smac_47_16),
	219	key->src);
	220	}
	221
	222	if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
	223	struct flow_dissector_key_ipv4_addrs *key =
	224	skb_flow_dissector_target(f->dissector,
	225	FLOW_DISSECTOR_KEY_IPV4_ADDRS,
	226	f->key);
	227	struct flow_dissector_key_ipv4_addrs *mask =
	228	skb_flow_dissector_target(f->dissector,
	229	FLOW_DISSECTOR_KEY_IPV4_ADDRS,
	230	f->mask);
	231
	232	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	233	src_ipv4_src_ipv6.ipv4_layout.ipv4),
	234	&mask->src, sizeof(mask->src));
235	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
236	src_ipv4_src_ipv6.ipv4_layout.ipv4),
237	&key->src, sizeof(key->src));
238	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
239	dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
240	&mask->dst, sizeof(mask->dst));
241	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
242	dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
243	&key->dst, sizeof(key->dst));
244	}
245
246	if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
247	struct flow_dissector_key_ipv6_addrs *key =
248	skb_flow_dissector_target(f->dissector,
249	FLOW_DISSECTOR_KEY_IPV6_ADDRS,
250	f->key);
251	struct flow_dissector_key_ipv6_addrs *mask =
252	skb_flow_dissector_target(f->dissector,
253	FLOW_DISSECTOR_KEY_IPV6_ADDRS,
254	f->mask);
255
256	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
257	src_ipv4_src_ipv6.ipv6_layout.ipv6),
258	&mask->src, sizeof(mask->src));
259	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
260	src_ipv4_src_ipv6.ipv6_layout.ipv6),
261	&key->src, sizeof(key->src));
262
263	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
264	dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
265	&mask->dst, sizeof(mask->dst));
266	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
267	dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
268	&key->dst, sizeof(key->dst));
269	}
270
271	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
272	struct flow_dissector_key_ports *key =
273	skb_flow_dissector_target(f->dissector,
274	FLOW_DISSECTOR_KEY_PORTS,
275	f->key);
276	struct flow_dissector_key_ports *mask =
277	skb_flow_dissector_target(f->dissector,
278	FLOW_DISSECTOR_KEY_PORTS,
279	f->mask);
280	switch (ip_proto) {
281	case IPPROTO_TCP:
282	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
283	tcp_sport, ntohs(mask->src));
284	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
285	tcp_sport, ntohs(key->src));
286
287	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
288	tcp_dport, ntohs(mask->dst));
289	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
290	tcp_dport, ntohs(key->dst));
291	break;
292
293	case IPPROTO_UDP:
294	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
295	udp_sport, ntohs(mask->src));
296	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
297	udp_sport, ntohs(key->src));
298
299	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
300	udp_dport, ntohs(mask->dst));
301	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
302	udp_dport, ntohs(key->dst));
303	break;
304	default:
305	netdev_err(priv->netdev,
306	"Only UDP and TCP transport are supported\n");
307	return -EINVAL;
308	}
309	}
310
311	return 0;
312	}
313
5c40348c OG	314	static int parse_tc_nic_actions(struct mlx5e_priv priv, struct tcf_exts exts,
5c40348c OG	315	u32 action, u32 flow_tag)
e3a2b7ed AV	316	{
e3a2b7ed AV	317	const struct tc_action *a;
22dc13c8	318	LIST_HEAD(actions);
e3a2b7ed AV	319
	320	if (tc_no_actions(exts))
	321	return -EINVAL;
	322
	323	*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
	324	*action = 0;
	325
22dc13c8 WC	326	tcf_exts_to_list(exts, &actions);
22dc13c8 WC	327	list_for_each_entry(a, &actions, list) {
e3a2b7ed AV	328	/* Only support a single action per rule */
	329	if (*action)
	330	return -EINVAL;
	331
	332	if (is_tcf_gact_shot(a)) {
	333	*action \|= MLX5_FLOW_CONTEXT_ACTION_DROP;
aad7e08d AV	334	if (MLX5_CAP_FLOWTABLE(priv->mdev,
	335	flow_table_properties_nic_receive.flow_counter))
	336	*action \|= MLX5_FLOW_CONTEXT_ACTION_COUNT;
e3a2b7ed AV	337	continue;
	338	}
	339
	340	if (is_tcf_skbedit_mark(a)) {
	341	u32 mark = tcf_skbedit_mark(a);
	342
	343	if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
	344	netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
	345	mark);
	346	return -EINVAL;
	347	}
	348
	349	*flow_tag = mark;
	350	*action \|= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
	351	continue;
	352	}
	353
	354	return -EINVAL;
	355	}
	356
	357	return 0;
	358	}
	359
03a9d11e OG	360	static int parse_tc_fdb_actions(struct mlx5e_priv priv, struct tcf_exts exts,
	361	u32 action, u32 dest_vport)
	362	{
	363	const struct tc_action *a;
22dc13c8	364	LIST_HEAD(actions);
03a9d11e OG	365
	366	if (tc_no_actions(exts))
	367	return -EINVAL;
	368
	369	*action = 0;
	370
22dc13c8 WC	371	tcf_exts_to_list(exts, &actions);
22dc13c8 WC	372	list_for_each_entry(a, &actions, list) {
03a9d11e OG	373	/* Only support a single action per rule */
	374	if (*action)
	375	return -EINVAL;
	376
	377	if (is_tcf_gact_shot(a)) {
	378	*action = MLX5_FLOW_CONTEXT_ACTION_DROP \|
	379	MLX5_FLOW_CONTEXT_ACTION_COUNT;
	380	continue;
	381	}
	382
	383	if (is_tcf_mirred_redirect(a)) {
	384	int ifindex = tcf_mirred_ifindex(a);
	385	struct net_device *out_dev;
	386	struct mlx5e_priv *out_priv;
	387	struct mlx5_eswitch_rep *out_rep;
	388
	389	out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
	390
	391	if (!switchdev_port_same_parent_id(priv->netdev, out_dev)) {
	392	pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
	393	priv->netdev->name, out_dev->name);
	394	return -EINVAL;
	395	}
	396
	397	out_priv = netdev_priv(out_dev);
	398	out_rep = out_priv->ppriv;
9deb2241	399	*dest_vport = out_rep->vport;
03a9d11e OG	400	*action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
	401	continue;
	402	}
	403
	404	return -EINVAL;
	405	}
	406	return 0;
	407	}
	408
e3a2b7ed AV	409	int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
	410	struct tc_cls_flower_offload *f)
	411	{
acff797c	412	struct mlx5e_tc_table *tc = &priv->fs.tc;
e3a2b7ed	413	int err = 0;
adb4c123	414	u32 flow_tag, action, dest_vport = 0;
e3a2b7ed	415	struct mlx5e_tc_flow *flow;
c5bb1730	416	struct mlx5_flow_spec *spec;
e3a2b7ed	417	struct mlx5_flow_rule *old = NULL;
adb4c123	418	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
e3a2b7ed AV	419
	420	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
	421	tc->ht_params);
	422	if (flow)
	423	old = flow->rule;
	424	else
	425	flow = kzalloc(sizeof(*flow), GFP_KERNEL);
	426
c5bb1730 MG	427	spec = mlx5_vzalloc(sizeof(*spec));
c5bb1730 MG	428	if (!spec \|\| !flow) {
e3a2b7ed AV	429	err = -ENOMEM;
	430	goto err_free;
	431	}
	432
	433	flow->cookie = f->cookie;
	434
c5bb1730	435	err = parse_cls_flower(priv, spec, f);
e3a2b7ed AV	436	if (err < 0)
	437	goto err_free;
	438
adb4c123 OG	439	if (esw && esw->mode == SRIOV_OFFLOADS) {
	440	err = parse_tc_fdb_actions(priv, f->exts, &action, &dest_vport);
	441	if (err < 0)
	442	goto err_free;
	443	flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, action, dest_vport);
	444	} else {
	445	err = parse_tc_nic_actions(priv, f->exts, &action, &flow_tag);
	446	if (err < 0)
	447	goto err_free;
	448	flow->rule = mlx5e_tc_add_nic_flow(priv, spec, action, flow_tag);
	449	}
e3a2b7ed	450
e3a2b7ed AV	451	if (IS_ERR(flow->rule)) {
e3a2b7ed AV	452	err = PTR_ERR(flow->rule);
5c40348c	453	goto err_free;
e3a2b7ed AV	454	}
e3a2b7ed AV	455
5c40348c OG	456	err = rhashtable_insert_fast(&tc->ht, &flow->node,
	457	tc->ht_params);
	458	if (err)
	459	goto err_del_rule;
	460
e3a2b7ed AV	461	if (old)
	462	mlx5e_tc_del_flow(priv, old);
	463
	464	goto out;
	465
5c40348c OG	466	err_del_rule:
5c40348c OG	467	mlx5_del_flow_rule(flow->rule);
e3a2b7ed AV	468
	469	err_free:
	470	if (!old)
	471	kfree(flow);
	472	out:
c5bb1730	473	kvfree(spec);
e3a2b7ed AV	474	return err;
	475	}
	476
	477	int mlx5e_delete_flower(struct mlx5e_priv *priv,
	478	struct tc_cls_flower_offload *f)
	479	{
	480	struct mlx5e_tc_flow *flow;
acff797c	481	struct mlx5e_tc_table *tc = &priv->fs.tc;
e3a2b7ed AV	482
	483	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
	484	tc->ht_params);
	485	if (!flow)
	486	return -EINVAL;
	487
	488	rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
	489
	490	mlx5e_tc_del_flow(priv, flow->rule);
	491
	492	kfree(flow);
	493
	494	return 0;
	495	}
	496
aad7e08d AV	497	int mlx5e_stats_flower(struct mlx5e_priv *priv,
	498	struct tc_cls_flower_offload *f)
	499	{
	500	struct mlx5e_tc_table *tc = &priv->fs.tc;
	501	struct mlx5e_tc_flow *flow;
	502	struct tc_action *a;
	503	struct mlx5_fc *counter;
22dc13c8	504	LIST_HEAD(actions);
aad7e08d AV	505	u64 bytes;
	506	u64 packets;
	507	u64 lastuse;
	508
	509	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
	510	tc->ht_params);
	511	if (!flow)
	512	return -EINVAL;
	513
	514	counter = mlx5_flow_rule_counter(flow->rule);
	515	if (!counter)
	516	return 0;
	517
	518	mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
	519
22dc13c8 WC	520	tcf_exts_to_list(f->exts, &actions);
22dc13c8 WC	521	list_for_each_entry(a, &actions, list)
aad7e08d AV	522	tcf_action_stats_update(a, bytes, packets, lastuse);
	523
	524	return 0;
	525	}
	526
e8f887ac AV	527	static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
	528	.head_offset = offsetof(struct mlx5e_tc_flow, node),
	529	.key_offset = offsetof(struct mlx5e_tc_flow, cookie),
	530	.key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
	531	.automatic_shrinking = true,
	532	};
	533
	534	int mlx5e_tc_init(struct mlx5e_priv *priv)
	535	{
acff797c	536	struct mlx5e_tc_table *tc = &priv->fs.tc;
e8f887ac AV	537
	538	tc->ht_params = mlx5e_tc_flow_ht_params;
	539	return rhashtable_init(&tc->ht, &tc->ht_params);
	540	}
	541
	542	static void _mlx5e_tc_del_flow(void ptr, void arg)
	543	{
	544	struct mlx5e_tc_flow *flow = ptr;
	545	struct mlx5e_priv *priv = arg;
	546
	547	mlx5e_tc_del_flow(priv, flow->rule);
	548	kfree(flow);
	549	}
	550
	551	void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
	552	{
acff797c	553	struct mlx5e_tc_table *tc = &priv->fs.tc;
e8f887ac AV	554
	555	rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
	556
acff797c MG	557	if (!IS_ERR_OR_NULL(tc->t)) {
	558	mlx5_destroy_flow_table(tc->t);
	559	tc->t = NULL;
e8f887ac AV	560	}
e8f887ac AV	561	}