path: root/drivers/net/ethernet/mellanox/mlx4/port.c

/*
 * Copyright (c) 2007 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 <linux/errno.h>
#include <linux/if_ether.h>
#include <linux/export.h>

#include <linux/mlx4/cmd.h>

#include "mlx4.h"

#define MLX4_MAC_VALID		(1ull << 63)

#define MLX4_VLAN_VALID		(1u << 31)
#define MLX4_VLAN_MASK		0xfff

#define MLX4_STATS_TRAFFIC_COUNTERS_MASK	0xfULL
#define MLX4_STATS_TRAFFIC_DROPS_MASK		0xc0ULL
#define MLX4_STATS_ERROR_COUNTERS_MASK		0x1ffc30ULL
#define MLX4_STATS_PORT_COUNTERS_MASK		0x1fe00000ULL

void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
{
	int i;

	mutex_init(&table->mutex);
	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
		table->entries[i] = 0;
		table->refs[i]	 = 0;
	}
	table->max   = 1 << dev->caps.log_num_macs;
	table->total = 0;
}

void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table)
{
	int i;

	mutex_init(&table->mutex);
	for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
		table->entries[i] = 0;
		table->refs[i]	 = 0;
	}
	table->max   = (1 << dev->caps.log_num_vlans) - MLX4_VLAN_REGULAR;
	table->total = 0;
}

static int mlx4_uc_steer_add(struct mlx4_dev *dev, u8 port,
			     u64 mac, int *qpn, u64 *reg_id)
{
	__be64 be_mac;
	int err;

	mac &= MLX4_MAC_MASK;
	be_mac = cpu_to_be64(mac << 16);

	switch (dev->caps.steering_mode) {
	case MLX4_STEERING_MODE_B0: {
		struct mlx4_qp qp;
		u8 gid[16] = {0};

		qp.qpn = *qpn;
		memcpy(&gid[10], &be_mac, ETH_ALEN);
		gid[5] = port;

		err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
		break;
	}
	case MLX4_STEERING_MODE_DEVICE_MANAGED: {
		struct mlx4_spec_list spec_eth = { {NULL} };
		__be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);

		struct mlx4_net_trans_rule rule = {
			.queue_mode = MLX4_NET_TRANS_Q_FIFO,
			.exclusive = 0,
			.allow_loopback = 1,
			.promisc_mode = MLX4_FS_PROMISC_NONE,
			.priority = MLX4_DOMAIN_NIC,
		};

		rule.port = port;
		rule.qpn = *qpn;
		INIT_LIST_HEAD(&rule.list);

		spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
		memcpy(spec_eth.eth.dst_mac, &be_mac, ETH_ALEN);
		memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
		list_add_tail(&spec_eth.list, &rule.list);

		err = mlx4_flow_attach(dev, &rule, reg_id);
		break;
	}
	default:
		return -EINVAL;
	}
	if (err)
		mlx4_warn(dev, "Failed Attaching Unicast\n");

	return err;
}

static void mlx4_uc_steer_release(struct mlx4_dev *dev, u8 port,
				  u64 mac, int qpn, u64 reg_id)
{
	switch (dev->caps.steering_mode) {
	case MLX4_STEERING_MODE_B0: {
		struct mlx4_qp qp;
		u8 gid[16] = {0};
		__be64 be_mac;

		qp.qpn = qpn;