[linux-2.6-block.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_FLOW_TABLE_NUM_ENTRIES 1024
#define MLX5E_TC_FLOW_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_flow_destination dest = {
		.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE,
		{.ft = priv->fts.vlan.t},
	};
	struct mlx5_flow_rule *rule;
	bool table_created = false;

	if (IS_ERR_OR_NULL(priv->fts.tc.t)) {
		priv->fts.tc.t =
			mlx5_create_auto_grouped_flow_table(priv->fts.ns, 0,
							    MLX5E_TC_FLOW_TABLE_NUM_ENTRIES,
							    MLX5E_TC_FLOW_TABLE_NUM_GROUPS,
							    0);
		if (IS_ERR(priv->fts.tc.t)) {
			netdev_err(priv->netdev,
				   "Failed to create tc offload table\n");
			return ERR_CAST(priv->fts.tc.t);
		}

		table_created = true;
	}

	rule = mlx5_add_flow_rule(priv->fts.tc.t, MLX5_MATCH_OUTER_HEADERS,
				  match_c, match_v,
				  action, flow_tag,
				  action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST ? &dest : NULL);

	if (IS_ERR(rule) && table_created) {
		mlx5_destroy_flow_table(priv->fts.tc.t);
		priv->fts.tc.t = NULL;
	}

	return rule;
}

static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
			      struct mlx5_flow_rule *rule)
{
	mlx5_del_flow_rule(rule);

	if (!mlx5e_tc_num_filters(priv)) {
		mlx5_destroy_flow_table(priv->fts.tc.t);
		priv->fts.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;
			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_flow_table *tc = &priv->fts.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_flow_table *tc = &priv->fts.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;
}

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_flow_table *tc = &priv->fts.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_flow_table *tc = &priv->fts.tc;

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

	if (!IS_ERR_OR_NULL(priv->fts.tc.t)) {
		mlx5_destroy_flow_table(priv->fts.tc.t);
		priv->fts.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
	49	#define MLX5E_TC_FLOW_TABLE_NUM_ENTRIES 1024
	50	#define MLX5E_TC_FLOW_TABLE_NUM_GROUPS 4
	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	{
	56	struct mlx5_flow_destination dest = {
	57	.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE,
	58	{.ft = priv->fts.vlan.t},
	59	};
	60	struct mlx5_flow_rule *rule;
	61	bool table_created = false;
	62
	63	if (IS_ERR_OR_NULL(priv->fts.tc.t)) {
	64	priv->fts.tc.t =
	65	mlx5_create_auto_grouped_flow_table(priv->fts.ns, 0,
	66	MLX5E_TC_FLOW_TABLE_NUM_ENTRIES,
d63cd286 MG	67	MLX5E_TC_FLOW_TABLE_NUM_GROUPS,
d63cd286 MG	68	0);
e8f887ac AV	69	if (IS_ERR(priv->fts.tc.t)) {
	70	netdev_err(priv->netdev,
	71	"Failed to create tc offload table\n");
	72	return ERR_CAST(priv->fts.tc.t);
	73	}
	74
	75	table_created = true;
	76	}
	77
	78	rule = mlx5_add_flow_rule(priv->fts.tc.t, MLX5_MATCH_OUTER_HEADERS,
	79	match_c, match_v,
	80	action, flow_tag,
	81	action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST ? &dest : NULL);
	82
	83	if (IS_ERR(rule) && table_created) {
	84	mlx5_destroy_flow_table(priv->fts.tc.t);
	85	priv->fts.tc.t = NULL;
	86	}
	87
	88	return rule;
	89	}
	90
	91	static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
	92	struct mlx5_flow_rule *rule)
	93	{
	94	mlx5_del_flow_rule(rule);
	95
	96	if (!mlx5e_tc_num_filters(priv)) {
	97	mlx5_destroy_flow_table(priv->fts.tc.t);
	98	priv->fts.tc.t = NULL;
	99	}
	100	}
	101
e3a2b7ed AV	102	static int parse_cls_flower(struct mlx5e_priv *priv,
	103	u32 match_c, u32 match_v,
	104	struct tc_cls_flower_offload *f)
	105	{
	106	void *headers_c = MLX5_ADDR_OF(fte_match_param, match_c, outer_headers);
	107	void *headers_v = MLX5_ADDR_OF(fte_match_param, match_v, outer_headers);
	108	u16 addr_type = 0;
	109	u8 ip_proto = 0;
	110
	111	if (f->dissector->used_keys &
	112	~(BIT(FLOW_DISSECTOR_KEY_CONTROL) \|
	113	BIT(FLOW_DISSECTOR_KEY_BASIC) \|
	114	BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) \|
	115	BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) \|
	116	BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) \|
	117	BIT(FLOW_DISSECTOR_KEY_PORTS))) {
	118	netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
	119	f->dissector->used_keys);
	120	return -EOPNOTSUPP;
	121	}
	122
	123	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
	124	struct flow_dissector_key_control *key =
	125	skb_flow_dissector_target(f->dissector,
	126	FLOW_DISSECTOR_KEY_BASIC,
	127	f->key);
	128	addr_type = key->addr_type;
	129	}
	130
	131	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
	132	struct flow_dissector_key_basic *key =
	133	skb_flow_dissector_target(f->dissector,
	134	FLOW_DISSECTOR_KEY_BASIC,
	135	f->key);
	136	struct flow_dissector_key_basic *mask =
	137	skb_flow_dissector_target(f->dissector,
	138	FLOW_DISSECTOR_KEY_BASIC,
	139	f->mask);
	140	ip_proto = key->ip_proto;
	141
	142	MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
	143	ntohs(mask->n_proto));
	144	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
	145	ntohs(key->n_proto));
	146
	147	MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
	148	mask->ip_proto);
	149	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
	150	key->ip_proto);
	151	}
	152
	153	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
	154	struct flow_dissector_key_eth_addrs *key =
	155	skb_flow_dissector_target(f->dissector,
	156	FLOW_DISSECTOR_KEY_ETH_ADDRS,
	157	f->key);
	158	struct flow_dissector_key_eth_addrs *mask =
	159	skb_flow_dissector_target(f->dissector,
	160	FLOW_DISSECTOR_KEY_ETH_ADDRS,
	161	f->mask);
	162
	163	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
	164	dmac_47_16),
	165	mask->dst);
166	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
167	dmac_47_16),
168	key->dst);
169
170	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
171	smac_47_16),
172	mask->src);
173	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
174	smac_47_16),
175	key->src);
176	}
177
178	if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
179	struct flow_dissector_key_ipv4_addrs *key =
180	skb_flow_dissector_target(f->dissector,
181	FLOW_DISSECTOR_KEY_IPV4_ADDRS,
182	f->key);
183	struct flow_dissector_key_ipv4_addrs *mask =
184	skb_flow_dissector_target(f->dissector,
185	FLOW_DISSECTOR_KEY_IPV4_ADDRS,
186	f->mask);
187
188	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
189	src_ipv4_src_ipv6.ipv4_layout.ipv4),
190	&mask->src, sizeof(mask->src));
191	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
192	src_ipv4_src_ipv6.ipv4_layout.ipv4),
193	&key->src, sizeof(key->src));
194	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
195	dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
196	&mask->dst, sizeof(mask->dst));
197	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
198	dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
199	&key->dst, sizeof(key->dst));
200	}
201
202	if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
203	struct flow_dissector_key_ipv6_addrs *key =
204	skb_flow_dissector_target(f->dissector,
205	FLOW_DISSECTOR_KEY_IPV6_ADDRS,
206	f->key);
207	struct flow_dissector_key_ipv6_addrs *mask =
208	skb_flow_dissector_target(f->dissector,
209	FLOW_DISSECTOR_KEY_IPV6_ADDRS,
210	f->mask);
211
212	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
213	src_ipv4_src_ipv6.ipv6_layout.ipv6),
214	&mask->src, sizeof(mask->src));
215	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
216	src_ipv4_src_ipv6.ipv6_layout.ipv6),
217	&key->src, sizeof(key->src));
218
219	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
220	dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
221	&mask->dst, sizeof(mask->dst));
222	memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
223	dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
224	&key->dst, sizeof(key->dst));
225	}
226
227	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
228	struct flow_dissector_key_ports *key =
229	skb_flow_dissector_target(f->dissector,
230	FLOW_DISSECTOR_KEY_PORTS,
231	f->key);
232	struct flow_dissector_key_ports *mask =
233	skb_flow_dissector_target(f->dissector,
234	FLOW_DISSECTOR_KEY_PORTS,
235	f->mask);
236	switch (ip_proto) {
237	case IPPROTO_TCP:
238	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
239	tcp_sport, ntohs(mask->src));
240	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
241	tcp_sport, ntohs(key->src));
242
243	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
244	tcp_dport, ntohs(mask->dst));
245	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
246	tcp_dport, ntohs(key->dst));
247	break;
248
249	case IPPROTO_UDP:
250	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
251	udp_sport, ntohs(mask->src));
252	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
253	udp_sport, ntohs(key->src));
254
255	MLX5_SET(fte_match_set_lyr_2_4, headers_c,
256	udp_dport, ntohs(mask->dst));
257	MLX5_SET(fte_match_set_lyr_2_4, headers_v,
258	udp_dport, ntohs(key->dst));
259	break;
260	default:
261	netdev_err(priv->netdev,
262	"Only UDP and TCP transport are supported\n");
263	return -EINVAL;
264	}
265	}
266
267	return 0;
268	}
269
270	static int parse_tc_actions(struct mlx5e_priv priv, struct tcf_exts exts,
271	u32 action, u32 flow_tag)
272	{
273	const struct tc_action *a;
274
275	if (tc_no_actions(exts))
276	return -EINVAL;
277
278	*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
279	*action = 0;
280
281	tc_for_each_action(a, exts) {
282	/* Only support a single action per rule */
283	if (*action)
284	return -EINVAL;
285
286	if (is_tcf_gact_shot(a)) {
287	*action \|= MLX5_FLOW_CONTEXT_ACTION_DROP;
288	continue;
289	}
290
291	if (is_tcf_skbedit_mark(a)) {
292	u32 mark = tcf_skbedit_mark(a);
293
294	if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
295	netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
296	mark);
297	return -EINVAL;
298	}
299
300	*flow_tag = mark;
301	*action \|= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
302	continue;
303	}
304
305	return -EINVAL;
306	}
307
308	return 0;
309	}
310
311	int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
312	struct tc_cls_flower_offload *f)
313	{
314	struct mlx5e_tc_flow_table *tc = &priv->fts.tc;
315	u32 *match_c;
316	u32 *match_v;
317	int err = 0;
318	u32 flow_tag;
319	u32 action;
320	struct mlx5e_tc_flow *flow;
321	struct mlx5_flow_rule *old = NULL;
322
323	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
324	tc->ht_params);
325	if (flow)
326	old = flow->rule;
327	else
328	flow = kzalloc(sizeof(*flow), GFP_KERNEL);
329
330	match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
331	match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
332	if (!match_c \|\| !match_v \|\| !flow) {
333	err = -ENOMEM;
334	goto err_free;
335	}
336
337	flow->cookie = f->cookie;
338
339	err = parse_cls_flower(priv, match_c, match_v, f);
340	if (err < 0)
341	goto err_free;
342
343	err = parse_tc_actions(priv, f->exts, &action, &flow_tag);
344	if (err < 0)
345	goto err_free;
346
347	err = rhashtable_insert_fast(&tc->ht, &flow->node,
348	tc->ht_params);
349	if (err)
350	goto err_free;
351
352	flow->rule = mlx5e_tc_add_flow(priv, match_c, match_v, action,
353	flow_tag);
354	if (IS_ERR(flow->rule)) {
355	err = PTR_ERR(flow->rule);
356	goto err_hash_del;
357	}
358
359	if (old)
360	mlx5e_tc_del_flow(priv, old);
361
362	goto out;
363
364	err_hash_del:
365	rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
366
367	err_free:
368	if (!old)
369	kfree(flow);
370	out:
371	kfree(match_c);
372	kfree(match_v);
373	return err;
374	}
375
376	int mlx5e_delete_flower(struct mlx5e_priv *priv,
377	struct tc_cls_flower_offload *f)
378	{
379	struct mlx5e_tc_flow *flow;
380	struct mlx5e_tc_flow_table *tc = &priv->fts.tc;
381
382	flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
383	tc->ht_params);
384	if (!flow)
385	return -EINVAL;
386
387	rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
388
389	mlx5e_tc_del_flow(priv, flow->rule);
390
391	kfree(flow);
392
393	return 0;
394	}
395
e8f887ac AV	396	static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
	397	.head_offset = offsetof(struct mlx5e_tc_flow, node),
	398	.key_offset = offsetof(struct mlx5e_tc_flow, cookie),
	399	.key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
	400	.automatic_shrinking = true,
	401	};
	402
	403	int mlx5e_tc_init(struct mlx5e_priv *priv)
	404	{
	405	struct mlx5e_tc_flow_table *tc = &priv->fts.tc;
	406
	407	tc->ht_params = mlx5e_tc_flow_ht_params;
	408	return rhashtable_init(&tc->ht, &tc->ht_params);
	409	}
	410
	411	static void _mlx5e_tc_del_flow(void ptr, void arg)
	412	{
	413	struct mlx5e_tc_flow *flow = ptr;
	414	struct mlx5e_priv *priv = arg;
	415
	416	mlx5e_tc_del_flow(priv, flow->rule);
	417	kfree(flow);
	418	}
	419
	420	void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
	421	{
	422	struct mlx5e_tc_flow_table *tc = &priv->fts.tc;
	423
	424	rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
	425
	426	if (!IS_ERR_OR_NULL(priv->fts.tc.t)) {
	427	mlx5_destroy_flow_table(priv->fts.tc.t);
	428	priv->fts.tc.t = NULL;
	429	}
	430	}