[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 "en.h"
#include "en_tc.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_flow(struct mlx5e_priv *priv,
						u32 *match_c, u32 *match_v,
						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 {
		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;
	}

	rule = mlx5_add_flow_rule(priv->fs.tc.t, MLX5_MATCH_OUTER_HEADERS,
				  match_c, match_v,
				  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 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)) {
		mlx5_destroy_flow_table(priv->fs.tc.t);
		priv->fs.tc.t = NULL;
	}
}

static int parse_cls_flower(struct mlx5e_priv *priv,
			    u32 *match_c, u32 *match_v,
			    struct tc_cls_flower_offload *f)
{
	void *headers_c = MLX5_ADDR_OF(fte_match_param, match_c, outer_headers);
	void *headers_v = MLX5_ADDR_OF(fte_match_param, match_v, 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_BASIC,
						  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_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
			    u32 *action, u32 *flow_tag)
{
	const struct tc_action *a;

	if (tc_no_actions(exts))
		return -EINVAL;

	*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
	*action = 0;

	tc_for_each_action(a, exts) {
		/* 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;
}

int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
			   struct tc_cls_flower_offload *f)
{
	struct mlx5e_tc_table *tc = &priv->fs.tc;
	u32 *match_c;
	u32 *match_v;
	int err = 0;
	u32 flow_tag;
	u32 action;
	struct mlx5e_tc_flow *flow;
	struct mlx5_flow_rule *old = NULL;

	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
				      tc->ht_params);
	if (flow)
		old = flow->rule;
	else
		flow = kzalloc(sizeof(*flow), GFP_KERNEL);

	match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
	match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
	if (!match_c || !match_v || !flow) {
		err = -ENOMEM;
		goto err_free;
	}

	flow->cookie = f->cookie;

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

	err = parse_tc_actions(priv, f->exts, &action, &flow_tag);
	if (err < 0)
		goto err_free;

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

	flow->rule = mlx5e_tc_add_flow(priv, match_c, match_v, action,
				       flow_tag);
	if (IS_ERR(flow->rule)) {
		err = PTR_ERR(flow->rule);
		goto err_hash_del;
	}

	if (old)
		mlx5e_tc_del_flow(priv, old);

	goto out;

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

err_free:
	if (!old)
		kfree(flow);
out:
	kfree(match_c);
	kfree(match_v);
	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;
	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);

	tc_for_each_action(a, f->exts)
		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>
	40	#include "en.h"
	41	#include "en_tc.h"
	42
	43	struct mlx5e_tc_flow {
	44	struct rhash_head node;
	45	u64 cookie;
	46	struct mlx5_flow_rule *rule;
	47	};
	48
acff797c MG	49	#define MLX5E_TC_TABLE_NUM_ENTRIES 1024
acff797c MG	50	#define MLX5E_TC_TABLE_NUM_GROUPS 4
e8f887ac AV	51
	52	static struct mlx5_flow_rule mlx5e_tc_add_flow(struct mlx5e_priv priv,
	53	u32 match_c, u32 match_v,
	54	u32 action, u32 flow_tag)
	55	{
aad7e08d AV	56	struct mlx5_core_dev *dev = priv->mdev;
	57	struct mlx5_flow_destination dest = { 0 };
	58	struct mlx5_fc *counter = NULL;
e8f887ac AV	59	struct mlx5_flow_rule *rule;
	60	bool table_created = false;
	61
aad7e08d AV	62	if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
	63	dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
	64	dest.ft = priv->fs.vlan.ft.t;
	65	} else {
	66	counter = mlx5_fc_create(dev, true);
	67	if (IS_ERR(counter))
	68	return ERR_CAST(counter);
	69
	70	dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
	71	dest.counter = counter;
	72	}
	73
acff797c MG	74	if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
	75	priv->fs.tc.t =
	76	mlx5_create_auto_grouped_flow_table(priv->fs.ns,
	77	MLX5E_TC_PRIO,
	78	MLX5E_TC_TABLE_NUM_ENTRIES,
	79	MLX5E_TC_TABLE_NUM_GROUPS,
d63cd286	80	0);
acff797c	81	if (IS_ERR(priv->fs.tc.t)) {
e8f887ac AV	82	netdev_err(priv->netdev,
e8f887ac AV	83	"Failed to create tc offload table\n");
aad7e08d AV	84	rule = ERR_CAST(priv->fs.tc.t);
aad7e08d AV	85	goto err_create_ft;
e8f887ac AV	86	}
	87
	88	table_created = true;
	89	}
	90
acff797c	91	rule = mlx5_add_flow_rule(priv->fs.tc.t, MLX5_MATCH_OUTER_HEADERS,
e8f887ac AV	92	match_c, match_v,
e8f887ac AV	93	action, flow_tag,
aad7e08d AV	94	&dest);
	95
	96	if (IS_ERR(rule))
	97	goto err_add_rule;
	98
	99	return rule;
e8f887ac	100
aad7e08d AV	101	err_add_rule:
aad7e08d AV	102	if (table_created) {
acff797c MG	103	mlx5_destroy_flow_table(priv->fs.tc.t);
acff797c MG	104	priv->fs.tc.t = NULL;
e8f887ac	105	}
aad7e08d AV	106	err_create_ft:
aad7e08d AV	107	mlx5_fc_destroy(dev, counter);
e8f887ac AV	108
	109	return rule;
	110	}
	111
	112	static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
	113	struct mlx5_flow_rule *rule)
	114	{
aad7e08d AV	115	struct mlx5_fc *counter = NULL;
	116
	117	counter = mlx5_flow_rule_counter(rule);
	118
e8f887ac AV	119	mlx5_del_flow_rule(rule);
e8f887ac AV	120
aad7e08d AV	121	mlx5_fc_destroy(priv->mdev, counter);
aad7e08d AV	122
e8f887ac	123	if (!mlx5e_tc_num_filters(priv)) {
acff797c MG	124	mlx5_destroy_flow_table(priv->fs.tc.t);
acff797c MG	125	priv->fs.tc.t = NULL;
e8f887ac AV	126	}
	127	}
	128
e3a2b7ed AV	129	static int parse_cls_flower(struct mlx5e_priv *priv,
	130	u32 match_c, u32 match_v,
	131	struct tc_cls_flower_offload *f)
	132	{
	133	void *headers_c = MLX5_ADDR_OF(fte_match_param, match_c, outer_headers);
	134	void *headers_v = MLX5_ADDR_OF(fte_match_param, match_v, outer_headers);
	135	u16 addr_type = 0;
	136	u8 ip_proto = 0;
	137
	138	if (f->dissector->used_keys &
	139	~(BIT(FLOW_DISSECTOR_KEY_CONTROL) \|
	140	BIT(FLOW_DISSECTOR_KEY_BASIC) \|
	141	BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) \|
	142	BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) \|
	143	BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) \|
	144	BIT(FLOW_DISSECTOR_KEY_PORTS))) {
	145	netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
	146	f->dissector->used_keys);
	147	return -EOPNOTSUPP;
	148	}
	149
	150	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
	151	struct flow_dissector_key_control *key =
	152	skb_flow_dissector_target(f->dissector,
	153	FLOW_DISSECTOR_KEY_BASIC,
	154	f->key);
	155	addr_type = key->addr_type;
	156	}
	157
	158	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
	159	struct flow_dissector_key_basic *key =
	160	skb_flow_dissector_target(f->dissector,
	161	FLOW_DISSECTOR_KEY_BASIC,
	162	f->key);
	163	struct flow_dissector_key_basic *mask =
	164	skb_flow_dissector_target(f->dissector,
	165	FLOW_DISSECTOR_KEY_BASIC,
	166	f->mask);
	167	ip_proto = key->ip_proto;
	168
	169	MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
	170	ntohs(mask->n_proto));
	171	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
	172	ntohs(key->n_proto));
	173
	174	MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
	175	mask->ip_proto);
	176	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
	177	key->ip_proto);
	178	}
	179
	180	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
	181	struct flow_dissector_key_eth_addrs *key =
	182	skb_flow_dissector_target(f->dissector,
	183	FLOW_DISSECTOR_KEY_ETH_ADDRS,
	184	f->key);
	185	struct flow_dissector_key_eth_addrs *mask =
	186	skb_flow_dissector_target(f->dissector,
	187	FLOW_DISSECTOR_KEY_ETH_ADDRS,
	188	f->mask);
	189
	190	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	191	dmac_47_16),
	192	mask->dst);
193	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
194	dmac_47_16),
195	key->dst);
196
197	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
198	smac_47_16),
199	mask->src);
200	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
201	smac_47_16),
202	key->src);
203	}
204
205	if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
206	struct flow_dissector_key_ipv4_addrs *key =
207	skb_flow_dissector_target(f->dissector,
208	FLOW_DISSECTOR_KEY_IPV4_ADDRS,
209	f->key);
210	struct flow_dissector_key_ipv4_addrs *mask =
211	skb_flow_dissector_target(f->dissector,
212	FLOW_DISSECTOR_KEY_IPV4_ADDRS,
213	f->mask);
214
215	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
216	src_ipv4_src_ipv6.ipv4_layout.ipv4),
217	&mask->src, sizeof(mask->src));
218	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
219	src_ipv4_src_ipv6.ipv4_layout.ipv4),
220	&key->src, sizeof(key->src));
221	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
222	dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
223	&mask->dst, sizeof(mask->dst));
224	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
225	dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
226	&key->dst, sizeof(key->dst));
227	}
228
229	if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
230	struct flow_dissector_key_ipv6_addrs *key =
231	skb_flow_dissector_target(f->dissector,
232	FLOW_DISSECTOR_KEY_IPV6_ADDRS,
233	f->key);
234	struct flow_dissector_key_ipv6_addrs *mask =
235	skb_flow_dissector_target(f->dissector,
236	FLOW_DISSECTOR_KEY_IPV6_ADDRS,
237	f->mask);
238
239	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
240	src_ipv4_src_ipv6.ipv6_layout.ipv6),
241	&mask->src, sizeof(mask->src));
242	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
243	src_ipv4_src_ipv6.ipv6_layout.ipv6),
244	&key->src, sizeof(key->src));
245
246	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
247	dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
248	&mask->dst, sizeof(mask->dst));
249	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
250	dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
251	&key->dst, sizeof(key->dst));
252	}
253
254	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
255	struct flow_dissector_key_ports *key =
256	skb_flow_dissector_target(f->dissector,
257	FLOW_DISSECTOR_KEY_PORTS,
258	f->key);
259	struct flow_dissector_key_ports *mask =
260	skb_flow_dissector_target(f->dissector,
261	FLOW_DISSECTOR_KEY_PORTS,
262	f->mask);
263	switch (ip_proto) {
264	case IPPROTO_TCP:
265	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
266	tcp_sport, ntohs(mask->src));
267	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
268	tcp_sport, ntohs(key->src));
269
270	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
271	tcp_dport, ntohs(mask->dst));
272	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
273	tcp_dport, ntohs(key->dst));
274	break;
275
276	case IPPROTO_UDP:
277	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
278	udp_sport, ntohs(mask->src));
279	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
280	udp_sport, ntohs(key->src));
281
282	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
283	udp_dport, ntohs(mask->dst));
284	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
285	udp_dport, ntohs(key->dst));
286	break;
287	default:
288	netdev_err(priv->netdev,
289	"Only UDP and TCP transport are supported\n");
290	return -EINVAL;
291	}
292	}
293
294	return 0;
295	}
296
297	static int parse_tc_actions(struct mlx5e_priv priv, struct tcf_exts exts,
298	u32 action, u32 flow_tag)
299	{
300	const struct tc_action *a;
301
302	if (tc_no_actions(exts))
303	return -EINVAL;
304
305	*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
306	*action = 0;
307
308	tc_for_each_action(a, exts) {
309	/* Only support a single action per rule */
310	if (*action)
311	return -EINVAL;
312
313	if (is_tcf_gact_shot(a)) {
314	*action \|= MLX5_FLOW_CONTEXT_ACTION_DROP;
aad7e08d AV	315	if (MLX5_CAP_FLOWTABLE(priv->mdev,
	316	flow_table_properties_nic_receive.flow_counter))
	317	*action \|= MLX5_FLOW_CONTEXT_ACTION_COUNT;
e3a2b7ed AV	318	continue;
	319	}
	320
	321	if (is_tcf_skbedit_mark(a)) {
	322	u32 mark = tcf_skbedit_mark(a);
	323
	324	if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
	325	netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
	326	mark);
	327	return -EINVAL;
	328	}
	329
	330	*flow_tag = mark;
	331	*action \|= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
	332	continue;
	333	}
	334
	335	return -EINVAL;
	336	}
	337
	338	return 0;
	339	}
	340
	341	int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
	342	struct tc_cls_flower_offload *f)
	343	{
acff797c	344	struct mlx5e_tc_table *tc = &priv->fs.tc;
e3a2b7ed AV	345	u32 *match_c;
	346	u32 *match_v;
	347	int err = 0;
	348	u32 flow_tag;
	349	u32 action;
	350	struct mlx5e_tc_flow *flow;
	351	struct mlx5_flow_rule *old = NULL;
	352
	353	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
	354	tc->ht_params);
	355	if (flow)
	356	old = flow->rule;
	357	else
	358	flow = kzalloc(sizeof(*flow), GFP_KERNEL);
	359
	360	match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
	361	match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
	362	if (!match_c \|\| !match_v \|\| !flow) {
	363	err = -ENOMEM;
	364	goto err_free;
	365	}
	366
	367	flow->cookie = f->cookie;
	368
	369	err = parse_cls_flower(priv, match_c, match_v, f);
	370	if (err < 0)
	371	goto err_free;
	372
	373	err = parse_tc_actions(priv, f->exts, &action, &flow_tag);
	374	if (err < 0)
	375	goto err_free;
	376
	377	err = rhashtable_insert_fast(&tc->ht, &flow->node,
	378	tc->ht_params);
	379	if (err)
	380	goto err_free;
	381
	382	flow->rule = mlx5e_tc_add_flow(priv, match_c, match_v, action,
	383	flow_tag);
	384	if (IS_ERR(flow->rule)) {
	385	err = PTR_ERR(flow->rule);
	386	goto err_hash_del;
	387	}
	388
	389	if (old)
	390	mlx5e_tc_del_flow(priv, old);
	391
	392	goto out;
	393
	394	err_hash_del:
	395	rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
	396
	397	err_free:
	398	if (!old)
	399	kfree(flow);
	400	out:
	401	kfree(match_c);
	402	kfree(match_v);
	403	return err;
	404	}
	405
	406	int mlx5e_delete_flower(struct mlx5e_priv *priv,
	407	struct tc_cls_flower_offload *f)
	408	{
409	struct mlx5e_tc_flow *flow;
acff797c	410	struct mlx5e_tc_table *tc = &priv->fs.tc;
e3a2b7ed AV	411
	412	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
	413	tc->ht_params);
	414	if (!flow)
	415	return -EINVAL;
	416
	417	rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
	418
	419	mlx5e_tc_del_flow(priv, flow->rule);
	420
	421	kfree(flow);
	422
	423	return 0;
	424	}
	425
aad7e08d AV	426	int mlx5e_stats_flower(struct mlx5e_priv *priv,
	427	struct tc_cls_flower_offload *f)
	428	{
	429	struct mlx5e_tc_table *tc = &priv->fs.tc;
	430	struct mlx5e_tc_flow *flow;
	431	struct tc_action *a;
	432	struct mlx5_fc *counter;
	433	u64 bytes;
	434	u64 packets;
	435	u64 lastuse;
	436
	437	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
	438	tc->ht_params);
	439	if (!flow)
	440	return -EINVAL;
	441
	442	counter = mlx5_flow_rule_counter(flow->rule);
	443	if (!counter)
	444	return 0;
	445
	446	mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
	447
	448	tc_for_each_action(a, f->exts)
	449	tcf_action_stats_update(a, bytes, packets, lastuse);
	450
	451	return 0;
	452	}
	453
e8f887ac AV	454	static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
	455	.head_offset = offsetof(struct mlx5e_tc_flow, node),
	456	.key_offset = offsetof(struct mlx5e_tc_flow, cookie),
	457	.key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
	458	.automatic_shrinking = true,
	459	};
	460
	461	int mlx5e_tc_init(struct mlx5e_priv *priv)
	462	{
acff797c	463	struct mlx5e_tc_table *tc = &priv->fs.tc;
e8f887ac AV	464
	465	tc->ht_params = mlx5e_tc_flow_ht_params;
	466	return rhashtable_init(&tc->ht, &tc->ht_params);
	467	}
	468
	469	static void _mlx5e_tc_del_flow(void ptr, void arg)
	470	{
	471	struct mlx5e_tc_flow *flow = ptr;
	472	struct mlx5e_priv *priv = arg;
	473
	474	mlx5e_tc_del_flow(priv, flow->rule);
	475	kfree(flow);
	476	}
	477
	478	void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
	479	{
acff797c	480	struct mlx5e_tc_table *tc = &priv->fs.tc;
e8f887ac AV	481
	482	rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
	483
acff797c MG	484	if (!IS_ERR_OR_NULL(tc->t)) {
	485	mlx5_destroy_flow_table(tc->t);
	486	tc->t = NULL;
e8f887ac AV	487	}
e8f887ac AV	488	}