en_tc.c 30.4 KB
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/*
 * 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.
 */

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#include <net/flow_dissector.h>
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#include <net/sch_generic.h>
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#include <net/pkt_cls.h>
#include <net/tc_act/tc_gact.h>
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#include <net/tc_act/tc_skbedit.h>
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#include <linux/mlx5/fs.h>
#include <linux/mlx5/device.h>
#include <linux/rhashtable.h>
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#include <net/switchdev.h>
#include <net/tc_act/tc_mirred.h>
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#include <net/tc_act/tc_vlan.h>
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#include <net/tc_act/tc_tunnel_key.h>
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#include <net/vxlan.h>
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#include "en.h"
#include "en_tc.h"
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#include "eswitch.h"
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#include "vxlan.h"
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struct mlx5e_tc_flow {
	struct rhash_head	node;
	u64			cookie;
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	struct mlx5_flow_handle *rule;
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	struct list_head	encap; /* flows sharing the same encap */
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	struct mlx5_esw_flow_attr *attr;
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};

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enum {
	MLX5_HEADER_TYPE_VXLAN = 0x0,
	MLX5_HEADER_TYPE_NVGRE = 0x1,
};

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#define MLX5E_TC_TABLE_NUM_ENTRIES 1024
#define MLX5E_TC_TABLE_NUM_GROUPS 4
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static struct mlx5_flow_handle *
mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
		      struct mlx5_flow_spec *spec,
		      u32 action, u32 flow_tag)
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{
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	struct mlx5_core_dev *dev = priv->mdev;
	struct mlx5_flow_destination dest = { 0 };
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	struct mlx5_flow_act flow_act = {
		.action = action,
		.flow_tag = flow_tag,
		.encap_id = 0,
	};
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	struct mlx5_fc *counter = NULL;
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	struct mlx5_flow_handle *rule;
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	bool table_created = false;

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

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

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

		table_created = true;
	}

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	spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
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	rule = mlx5_add_flow_rules(priv->fs.tc.t, spec, &flow_act, &dest, 1);
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	if (IS_ERR(rule))
		goto err_add_rule;

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

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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)
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{
	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
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	int err;

	err = mlx5_eswitch_add_vlan_action(esw, attr);
	if (err)
		return ERR_PTR(err);
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	return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
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}

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static void mlx5e_detach_encap(struct mlx5e_priv *priv,
			       struct mlx5e_tc_flow *flow) {
	struct list_head *next = flow->encap.next;

	list_del(&flow->encap);
	if (list_empty(next)) {
		struct mlx5_encap_entry *e;

		e = list_entry(next, struct mlx5_encap_entry, flows);
		if (e->n) {
			mlx5_encap_dealloc(priv->mdev, e->encap_id);
			neigh_release(e->n);
		}
		hlist_del_rcu(&e->encap_hlist);
		kfree(e);
	}
}

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static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
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			      struct mlx5e_tc_flow *flow)
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{
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	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
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	struct mlx5_fc *counter = NULL;

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	counter = mlx5_flow_rule_counter(flow->rule);
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	mlx5_del_flow_rules(flow->rule);
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	if (esw && esw->mode == SRIOV_OFFLOADS) {
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		mlx5_eswitch_del_vlan_action(esw, flow->attr);
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		if (flow->attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
			mlx5e_detach_encap(priv, flow);
	}
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	mlx5_fc_destroy(priv->mdev, counter);

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

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static void parse_vxlan_attr(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);
	void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
				    misc_parameters);
	void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
				    misc_parameters);

	MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
	MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);

	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
		struct flow_dissector_key_keyid *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ENC_KEYID,
						  f->key);
		struct flow_dissector_key_keyid *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ENC_KEYID,
						  f->mask);
		MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
			 be32_to_cpu(mask->keyid));
		MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
			 be32_to_cpu(key->keyid));
	}
}

static int parse_tunnel_attr(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);

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	struct flow_dissector_key_control *enc_control =
		skb_flow_dissector_target(f->dissector,
					  FLOW_DISSECTOR_KEY_ENC_CONTROL,
					  f->key);

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

		/* Full udp dst port must be given */
		if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
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			goto vxlan_match_offload_err;
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		if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->dst)) &&
		    MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
			parse_vxlan_attr(spec, f);
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		else {
			netdev_warn(priv->netdev,
				    "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
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			return -EOPNOTSUPP;
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		}
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		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));

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		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));
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	} else { /* udp dst port must be given */
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vxlan_match_offload_err:
		netdev_warn(priv->netdev,
			    "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
		return -EOPNOTSUPP;
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	}

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	if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
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		struct flow_dissector_key_ipv4_addrs *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
						  f->key);
		struct flow_dissector_key_ipv4_addrs *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
						  f->mask);
		MLX5_SET(fte_match_set_lyr_2_4, headers_c,
			 src_ipv4_src_ipv6.ipv4_layout.ipv4,
			 ntohl(mask->src));
		MLX5_SET(fte_match_set_lyr_2_4, headers_v,
			 src_ipv4_src_ipv6.ipv4_layout.ipv4,
			 ntohl(key->src));

		MLX5_SET(fte_match_set_lyr_2_4, headers_c,
			 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
			 ntohl(mask->dst));
		MLX5_SET(fte_match_set_lyr_2_4, headers_v,
			 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
			 ntohl(key->dst));

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		MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
		MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
	}
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	/* Enforce DMAC when offloading incoming tunneled flows.
	 * Flow counters require a match on the DMAC.
	 */
	MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
	MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
	ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
				     dmac_47_16), priv->netdev->dev_addr);

	/* let software handle IP fragments */
	MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
	MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);

	return 0;
}

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static int __parse_cls_flower(struct mlx5e_priv *priv,
			      struct mlx5_flow_spec *spec,
			      struct tc_cls_flower_offload *f,
			      u8 *min_inline)
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{
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	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);
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	u16 addr_type = 0;
	u8 ip_proto = 0;

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	*min_inline = MLX5_INLINE_MODE_L2;

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	if (f->dissector->used_keys &
	    ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
	      BIT(FLOW_DISSECTOR_KEY_BASIC) |
	      BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
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	      BIT(FLOW_DISSECTOR_KEY_VLAN) |
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	      BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
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	      BIT(FLOW_DISSECTOR_KEY_PORTS) |
	      BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
	      BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
	      BIT(FLOW_DISSECTOR_KEY_ENC_PORTS)	|
	      BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL))) {
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		netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
			    f->dissector->used_keys);
		return -EOPNOTSUPP;
	}

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	if ((dissector_uses_key(f->dissector,
				FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
	     dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
	     dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
	    dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
		struct flow_dissector_key_control *key =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_ENC_CONTROL,
						  f->key);
		switch (key->addr_type) {
		case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
			if (parse_tunnel_attr(priv, spec, f))
				return -EOPNOTSUPP;
			break;
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		case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
			netdev_warn(priv->netdev,
				    "IPv6 tunnel decap offload isn't supported\n");
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		default:
			return -EOPNOTSUPP;
		}

		/* In decap flow, header pointers should point to the inner
		 * headers, outer header were already set by parse_tunnel_attr
		 */
		headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
					 inner_headers);
		headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
					 inner_headers);
	}

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	if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
		struct flow_dissector_key_control *key =
			skb_flow_dissector_target(f->dissector,
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						  FLOW_DISSECTOR_KEY_CONTROL,
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						  f->key);
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		struct flow_dissector_key_control *mask =
			skb_flow_dissector_target(f->dissector,
						  FLOW_DISSECTOR_KEY_CONTROL,
						  f->mask);
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		addr_type = key->addr_type;
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		if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
			MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
			MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
				 key->flags & FLOW_DIS_IS_FRAGMENT);
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			/* the HW doesn't need L3 inline to match on frag=no */
			if (key->flags & FLOW_DIS_IS_FRAGMENT)
				*min_inline = MLX5_INLINE_MODE_IP;
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		}
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	}

	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);
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		if (mask->ip_proto)
			*min_inline = MLX5_INLINE_MODE_IP;
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	}

	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);
	}

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	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);
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		if (mask->vlan_id || mask->vlan_priority) {
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			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);
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			MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
			MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
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		}
	}

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482
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491
	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));
492
493
494

		if (mask->src || mask->dst)
			*min_inline = MLX5_INLINE_MODE_IP;
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
	}

	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));
520
521
522
523

		if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
		    ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
			*min_inline = MLX5_INLINE_MODE_IP;
524
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526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
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555
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557
558
559
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563
	}

	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;
		}
564
565
566

		if (mask->src || mask->dst)
			*min_inline = MLX5_INLINE_MODE_TCP_UDP;
567
568
569
570
571
	}

	return 0;
}

572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
static int parse_cls_flower(struct mlx5e_priv *priv,
			    struct mlx5_flow_spec *spec,
			    struct tc_cls_flower_offload *f)
{
	struct mlx5_core_dev *dev = priv->mdev;
	struct mlx5_eswitch *esw = dev->priv.eswitch;
	struct mlx5_eswitch_rep *rep = priv->ppriv;
	u8 min_inline;
	int err;

	err = __parse_cls_flower(priv, spec, f, &min_inline);

	if (!err && esw->mode == SRIOV_OFFLOADS &&
	    rep->vport != FDB_UPLINK_VPORT) {
		if (min_inline > esw->offloads.inline_mode) {
			netdev_warn(priv->netdev,
				    "Flow is not offloaded due to min inline setting, required %d actual %d\n",
				    min_inline, esw->offloads.inline_mode);
			return -EOPNOTSUPP;
		}
	}

	return err;
}

597
598
static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
				u32 *action, u32 *flow_tag)
599
600
{
	const struct tc_action *a;
601
	LIST_HEAD(actions);
602
603
604
605
606
607
608

	if (tc_no_actions(exts))
		return -EINVAL;

	*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
	*action = 0;

609
610
	tcf_exts_to_list(exts, &actions);
	list_for_each_entry(a, &actions, list) {
611
612
613
614
615
616
		/* Only support a single action per rule */
		if (*action)
			return -EINVAL;

		if (is_tcf_gact_shot(a)) {
			*action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
617
618
619
			if (MLX5_CAP_FLOWTABLE(priv->mdev,
					       flow_table_properties_nic_receive.flow_counter))
				*action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
			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;
}

643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
static inline int cmp_encap_info(struct mlx5_encap_info *a,
				 struct mlx5_encap_info *b)
{
	return memcmp(a, b, sizeof(*a));
}

static inline int hash_encap_info(struct mlx5_encap_info *info)
{
	return jhash(info, sizeof(*info), 0);
}

static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
				   struct net_device *mirred_dev,
				   struct net_device **out_dev,
				   struct flowi4 *fl4,
				   struct neighbour **out_n,
				   __be32 *saddr,
				   int *out_ttl)
{
	struct rtable *rt;
	struct neighbour *n = NULL;
	int ttl;

#if IS_ENABLED(CONFIG_INET)
	rt = ip_route_output_key(dev_net(mirred_dev), fl4);
668
669
	if (IS_ERR(rt))
		return PTR_ERR(rt);
670
671
672
673
674
#else
	return -EOPNOTSUPP;
#endif

	if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev)) {
675
		pr_warn("%s: can't offload, devices not on same HW e-switch\n", __func__);
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
		ip_rt_put(rt);
		return -EOPNOTSUPP;
	}

	ttl = ip4_dst_hoplimit(&rt->dst);
	n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
	ip_rt_put(rt);
	if (!n)
		return -ENOMEM;

	*out_n = n;
	*saddr = fl4->saddr;
	*out_ttl = ttl;
	*out_dev = rt->dst.dev;

	return 0;
}

static int gen_vxlan_header_ipv4(struct net_device *out_dev,
				 char buf[],
				 unsigned char h_dest[ETH_ALEN],
				 int ttl,
				 __be32 daddr,
				 __be32 saddr,
				 __be16 udp_dst_port,
				 __be32 vx_vni)
{
	int encap_size = VXLAN_HLEN + sizeof(struct iphdr) + ETH_HLEN;
	struct ethhdr *eth = (struct ethhdr *)buf;
	struct iphdr  *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
	struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
	struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));

	memset(buf, 0, encap_size);

	ether_addr_copy(eth->h_dest, h_dest);
	ether_addr_copy(eth->h_source, out_dev->dev_addr);
	eth->h_proto = htons(ETH_P_IP);

	ip->daddr = daddr;
	ip->saddr = saddr;

	ip->ttl = ttl;
	ip->protocol = IPPROTO_UDP;
	ip->version = 0x4;
	ip->ihl = 0x5;

	udp->dest = udp_dst_port;
	vxh->vx_flags = VXLAN_HF_VNI;
	vxh->vx_vni = vxlan_vni_field(vx_vni);

	return encap_size;
}

static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
					  struct net_device *mirred_dev,
					  struct mlx5_encap_entry *e,
					  struct net_device **out_dev)
{
	int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
736
	struct neighbour *n = NULL;
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
	struct flowi4 fl4 = {};
	char *encap_header;
	int encap_size;
	__be32 saddr;
	int ttl;
	int err;

	encap_header = kzalloc(max_encap_size, GFP_KERNEL);
	if (!encap_header)
		return -ENOMEM;

	switch (e->tunnel_type) {
	case MLX5_HEADER_TYPE_VXLAN:
		fl4.flowi4_proto = IPPROTO_UDP;
		fl4.fl4_dport = e->tun_info.tp_dst;
		break;
	default:
		err = -EOPNOTSUPP;
		goto out;
	}
	fl4.daddr = e->tun_info.daddr;

	err = mlx5e_route_lookup_ipv4(priv, mirred_dev, out_dev,
				      &fl4, &n, &saddr, &ttl);
	if (err)
		goto out;

	e->n = n;
	e->out_dev = *out_dev;

	if (!(n->nud_state & NUD_VALID)) {
768
769
		pr_warn("%s: can't offload, neighbour to %pI4 invalid\n", __func__, &fl4.daddr);
		err = -EOPNOTSUPP;
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
		goto out;
	}

	neigh_ha_snapshot(e->h_dest, n, *out_dev);

	switch (e->tunnel_type) {
	case MLX5_HEADER_TYPE_VXLAN:
		encap_size = gen_vxlan_header_ipv4(*out_dev, encap_header,
						   e->h_dest, ttl,
						   e->tun_info.daddr,
						   saddr, e->tun_info.tp_dst,
						   e->tun_info.tun_id);
		break;
	default:
		err = -EOPNOTSUPP;
		goto out;
	}

	err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
			       encap_size, encap_header, &e->encap_id);
out:
791
792
	if (err && n)
		neigh_release(n);
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
	kfree(encap_header);
	return err;
}

static int mlx5e_attach_encap(struct mlx5e_priv *priv,
			      struct ip_tunnel_info *tun_info,
			      struct net_device *mirred_dev,
			      struct mlx5_esw_flow_attr *attr)
{
	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
	unsigned short family = ip_tunnel_info_af(tun_info);
	struct ip_tunnel_key *key = &tun_info->key;
	struct mlx5_encap_info info;
	struct mlx5_encap_entry *e;
	struct net_device *out_dev;
	uintptr_t hash_key;
	bool found = false;
	int tunnel_type;
	int err;

813
	/* udp dst port must be set */
814
	if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
815
		goto vxlan_encap_offload_err;
816

817
	/* setting udp src port isn't supported */
818
819
820
821
	if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
vxlan_encap_offload_err:
		netdev_warn(priv->netdev,
			    "must set udp dst port and not set udp src port\n");
822
		return -EOPNOTSUPP;
823
	}
824

825
826
827
828
829
830
	if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->tp_dst)) &&
	    MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
		info.tp_dst = key->tp_dst;
		info.tun_id = tunnel_id_to_key32(key->tun_id);
		tunnel_type = MLX5_HEADER_TYPE_VXLAN;
	} else {
831
832
		netdev_warn(priv->netdev,
			    "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
833
834
835
836
837
838
839
		return -EOPNOTSUPP;
	}

	switch (family) {
	case AF_INET:
		info.daddr = key->u.ipv4.dst;
		break;
840
841
842
	case AF_INET6:
		netdev_warn(priv->netdev,
			    "IPv6 tunnel encap offload isn't supported\n");
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
	default:
		return -EOPNOTSUPP;
	}

	hash_key = hash_encap_info(&info);

	hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
				   encap_hlist, hash_key) {
		if (!cmp_encap_info(&e->tun_info, &info)) {
			found = true;
			break;
		}
	}

	if (found) {
		attr->encap = e;
		return 0;
	}

	e = kzalloc(sizeof(*e), GFP_KERNEL);
	if (!e)
		return -ENOMEM;

	e->tun_info = info;
	e->tunnel_type = tunnel_type;
	INIT_LIST_HEAD(&e->flows);

	err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e, &out_dev);
	if (err)
		goto out_err;

	attr->encap = e;
	hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);

	return err;

out_err:
	kfree(e);
	return err;
}

884
static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
885
				struct mlx5e_tc_flow *flow)
886
{
887
888
	struct mlx5_esw_flow_attr *attr = flow->attr;
	struct ip_tunnel_info *info = NULL;
889
	const struct tc_action *a;
890
	LIST_HEAD(actions);
891
892
	bool encap = false;
	int err;
893
894
895
896

	if (tc_no_actions(exts))
		return -EINVAL;

897
898
	memset(attr, 0, sizeof(*attr));
	attr->in_rep = priv->ppriv;
899

900
901
	tcf_exts_to_list(exts, &actions);
	list_for_each_entry(a, &actions, list) {
902
		if (is_tcf_gact_shot(a)) {
903
904
			attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
					MLX5_FLOW_CONTEXT_ACTION_COUNT;
905
906
907
			continue;
		}

908
		if (is_tcf_mirred_egress_redirect(a)) {
909
910
911
912
913
914
			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);

915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
			if (switchdev_port_same_parent_id(priv->netdev,
							  out_dev)) {
				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;
			} else if (encap) {
				err = mlx5e_attach_encap(priv, info,
							 out_dev, attr);
				if (err)
					return err;
				list_add(&flow->encap, &attr->encap->flows);
				attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
					MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
					MLX5_FLOW_CONTEXT_ACTION_COUNT;
				out_priv = netdev_priv(attr->encap->out_dev);
				attr->out_rep = out_priv->ppriv;
			} else {
933
934
935
936
				pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
				       priv->netdev->name, out_dev->name);
				return -EINVAL;
			}
937
938
			continue;
		}
939

940
941
942
943
944
945
		if (is_tcf_tunnel_set(a)) {
			info = tcf_tunnel_info(a);
			if (info)
				encap = true;
			else
				return -EOPNOTSUPP;
946
947
948
			continue;
		}

949
950
951
952
953
954
955
956
957
958
959
960
961
		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;
		}

962
963
964
965
966
		if (is_tcf_tunnel_release(a)) {
			attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
			continue;
		}

967
968
969
970
971
		return -EINVAL;
	}
	return 0;
}

972
973
974
int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
			   struct tc_cls_flower_offload *f)
{
975
	struct mlx5e_tc_table *tc = &priv->fs.tc;
976
	int err = 0;
977
978
	bool fdb_flow = false;
	u32 flow_tag, action;
979
	struct mlx5e_tc_flow *flow;
980
	struct mlx5_flow_spec *spec;
981
	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
982

983
984
985
	if (esw && esw->mode == SRIOV_OFFLOADS)
		fdb_flow = true;

986
987
988
989
990
991
	if (fdb_flow)
		flow = kzalloc(sizeof(*flow) +
			       sizeof(struct mlx5_esw_flow_attr),
			       GFP_KERNEL);
	else
		flow = kzalloc(sizeof(*flow), GFP_KERNEL);
992

993
994
	spec = mlx5_vzalloc(sizeof(*spec));
	if (!spec || !flow) {
995
996
997
998
999
1000
		err = -ENOMEM;
		goto err_free;
	}

	flow->cookie = f->cookie;

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