[mirror_ubuntu-hirsute-kernel.git] / 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_MAC_MASK		0xffffffffffffULL

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

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_set_port_mac_table(struct mlx4_dev *dev, u8 port,
				   __be64 *entries)
{
	struct mlx4_cmd_mailbox *mailbox;
	u32 in_mod;
	int err;

	mailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(mailbox))
		return PTR_ERR(mailbox);

	memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);

	in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port;
	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
		       MLX4_CMD_TIME_CLASS_B);

	mlx4_free_cmd_mailbox(dev, mailbox);
	return err;
}

static int mlx4_uc_steer_add(struct mlx4_dev *dev, u8 port,
			     u64 mac, int *qpn, u8 reserve)
{
	struct mlx4_qp qp;
	u8 gid[16] = {0};
	int err;

	if (reserve) {
		err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
		if (err) {
			mlx4_err(dev, "Failed to reserve qp for mac registration\n");
			return err;
		}
	}
	qp.qpn = *qpn;

	mac &= 0xffffffffffffULL;
	mac = cpu_to_be64(mac << 16);
	memcpy(&gid[10], &mac, ETH_ALEN);
	gid[5] = port;
	gid[7] = MLX4_UC_STEER << 1;

	err = mlx4_qp_attach_common(dev, &qp, gid, 0,
				    MLX4_PROT_ETH, MLX4_UC_STEER);
	if (err && reserve)
		mlx4_qp_release_range(dev, *qpn, 1);

	return err;
}

static void mlx4_uc_steer_release(struct mlx4_dev *dev, u8 port,
				  u64 mac, int qpn, u8 free)
{
	struct mlx4_qp qp;
	u8 gid[16] = {0};

	qp.qpn = qpn;
	mac &= 0xffffffffffffULL;
	mac = cpu_to_be64(mac << 16);
	memcpy(&gid[10], &mac, ETH_ALEN);
	gid[5] = port;
	gid[7] = MLX4_UC_STEER << 1;

	mlx4_qp_detach_common(dev, &qp, gid, MLX4_PROT_ETH, MLX4_UC_STEER);
	if (free)
		mlx4_qp_release_range(dev, qpn, 1);
}

int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *qpn, u8 wrap)
{
	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
	struct mlx4_mac_table *table = &info->mac_table;
	struct mlx4_mac_entry *entry;
	int i, err = 0;
	int free = -1;

	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
		err = mlx4_uc_steer_add(dev, port, mac, qpn, 1);
		if (err)
			return err;

		entry = kmalloc(sizeof *entry, GFP_KERNEL);
		if (!entry) {
			mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
			return -ENOMEM;
		}

		entry->mac = mac;
		err = radix_tree_insert(&info->mac_tree, *qpn, entry);
		if (err) {
			kfree(entry);
			mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
			return err;
		}
	}

	mlx4_dbg(dev, "Registering MAC: 0x%llx\n", (unsigned long long) mac);

	mutex_lock(&table->mutex);
	for (i = 0; i < MLX4_MAX_MAC_NUM - 1; i++) {
		if (free < 0 && !table->refs[i]) {
			free = i;
			continue;
		}

		if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
			/* MAC already registered, increase references count */
			++table->refs[i];
			goto out;
		}
	}

	if (free < 0) {
		err = -ENOMEM;
		goto out;
	}

	mlx4_dbg(dev, "Free MAC index is %d\n", free);

	if (table->total == table->max) {
		/* No free mac entries */
		err = -ENOSPC;
		goto out;
	}

	/* Register new MAC */
	table->refs[free] = 1;
	table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);

	err = mlx4_set_port_mac_table(dev, port, table->entries);
	if (unlikely(err)) {
		mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) mac);
		table->refs[free] = 0;
		table->entries[free] = 0;
		goto out;
	}

	if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
		*qpn = info->base_qpn + free;
	++table->total;
out:
	mutex_unlock(&table->mutex);
	return err;
}
EXPORT_SYMBOL_GPL(mlx4_register_mac);

static int validate_index(struct mlx4_dev *dev,
			  struct mlx4_mac_table *table, int index)
{
	int err = 0;

	if (index < 0 || index >= table->max || !table->entries[index]) {
		mlx4_warn(dev, "No valid Mac entry for the given index\n");
		err = -EINVAL;
	}
	return err;
}

static int find_index(struct mlx4_dev *dev,
		      struct mlx4_mac_table *table, u64 mac)
{
	int i;
	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
		if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
			return i;
	}
	/* Mac not found */
	return -EINVAL;
}

void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int qpn)
{
	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
	struct mlx4_mac_table *table = &info->mac_table;
	int index = qpn - info->base_qpn;
	struct mlx4_mac_entry *entry;

	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
		entry = radix_tree_lookup(&info->mac_tree, qpn);
		if (entry) {
			mlx4_uc_steer_release(dev, port, entry->mac, qpn, 1);
			radix_tree_delete(&info->mac_tree, qpn);
			index = find_index(dev, table, entry->mac);
			kfree(entry);
		}
	}

	mutex_lock(&table->mutex);

	if (validate_index(dev, table, index))
		goto out;

	/* Check whether this address has reference count */
	if (!(--table->refs[index])) {
		table->entries[index] = 0;
		mlx4_set_port_mac_table(dev, port, table->entries);
		--table->total;
	}
out:
	mutex_unlock(&table->mutex);
}
EXPORT_SYMBOL_GPL(mlx4_unregister_mac);

int mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac, u8 wrap)
{
	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
	struct mlx4_mac_table *table = &info->mac_table;
	int index = qpn - info->base_qpn;
	struct mlx4_mac_entry *entry;
	int err;

	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
		entry = radix_tree_lookup(&info->mac_tree, qpn);
		if (!entry)
			return -EINVAL;
		index = find_index(dev, table, entry->mac);
		mlx4_uc_steer_release(dev, port, entry->mac, qpn, 0);
		entry->mac = new_mac;
		err = mlx4_uc_steer_add(dev, port, entry->mac, &qpn, 0);
		if (err || index < 0)
			return err;
	}

	mutex_lock(&table->mutex);

	err = validate_index(dev, table, index);
	if (err)
		goto out;

	table->entries[index] = cpu_to_be64(new_mac | MLX4_MAC_VALID);

	err = mlx4_set_port_mac_table(dev, port, table->entries);
	if (unlikely(err)) {
		mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) new_mac);
		table->entries[index] = 0;
	}
out:
	mutex_unlock(&table->mutex);
	return err;
}
EXPORT_SYMBOL_GPL(mlx4_replace_mac);
static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
				    __be32 *entries)
{
	struct mlx4_cmd_mailbox *mailbox;
	u32 in_mod;
	int err;

	mailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(mailbox))
		return PTR_ERR(mailbox);

	memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
	in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
		       MLX4_CMD_TIME_CLASS_B);

	mlx4_free_cmd_mailbox(dev, mailbox);

	return err;
}

int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx)
{
	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
	int i;

	for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
		if (table->refs[i] &&
		    (vid == (MLX4_VLAN_MASK &
			      be32_to_cpu(table->entries[i])))) {
			/* VLAN already registered, increase reference count */
			*idx = i;
			return 0;
		}
	}

	return -ENOENT;
}
EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);

int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
{
	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
	int i, err = 0;
	int free = -1;

	mutex_lock(&table->mutex);

	if (table->total == table->max) {
		/* No free vlan entries */
		err = -ENOSPC;
		goto out;
	}

	for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
		if (free < 0 && (table->refs[i] == 0)) {
			free = i;
			continue;
		}

		if (table->refs[i] &&
		    (vlan == (MLX4_VLAN_MASK &
			      be32_to_cpu(table->entries[i])))) {
			/* Vlan already registered, increase references count */
			*index = i;
			++table->refs[i];
			goto out;
		}
	}

	if (free < 0) {
		err = -ENOMEM;
		goto out;
	}

	/* Register new MAC */
	table->refs[free] = 1;
	table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);

	err = mlx4_set_port_vlan_table(dev, port, table->entries);
	if (unlikely(err)) {
		mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
		table->refs[free] = 0;
		table->entries[free] = 0;
		goto out;
	}

	*index = free;
	++table->total;
out:
	mutex_unlock(&table->mutex);
	return err;
}
EXPORT_SYMBOL_GPL(mlx4_register_vlan);

void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index)
{
	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;

	if (index < MLX4_VLAN_REGULAR) {
		mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
		return;
	}

	mutex_lock(&table->mutex);
	if (!table->refs[index]) {
		mlx4_warn(dev, "No vlan entry for index %d\n", index);
		goto out;
	}
	if (--table->refs[index]) {
		mlx4_dbg(dev, "Have more references for index %d,"
			 "no need to modify vlan table\n", index);
		goto out;
	}
	table->entries[index] = 0;
	mlx4_set_port_vlan_table(dev, port, table->entries);
	--table->total;
out:
	mutex_unlock(&table->mutex);
}
EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);

int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps)
{
	struct mlx4_cmd_mailbox *inmailbox, *outmailbox;
	u8 *inbuf, *outbuf;
	int err;

	inmailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(inmailbox))
		return PTR_ERR(inmailbox);

	outmailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(outmailbox)) {
		mlx4_free_cmd_mailbox(dev, inmailbox);
		return PTR_ERR(outmailbox);
	}

	inbuf = inmailbox->buf;
	outbuf = outmailbox->buf;
	memset(inbuf, 0, 256);
	memset(outbuf, 0, 256);
	inbuf[0] = 1;
	inbuf[1] = 1;
	inbuf[2] = 1;
	inbuf[3] = 1;
	*(__be16 *) (&inbuf[16]) = cpu_to_be16(0x0015);
	*(__be32 *) (&inbuf[20]) = cpu_to_be32(port);

	err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
			   MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C);
	if (!err)
		*caps = *(__be32 *) (outbuf + 84);
	mlx4_free_cmd_mailbox(dev, inmailbox);
	mlx4_free_cmd_mailbox(dev, outmailbox);
	return err;
}

int mlx4_check_ext_port_caps(struct mlx4_dev *dev, u8 port)
{
	struct mlx4_cmd_mailbox *inmailbox, *outmailbox;
	u8 *inbuf, *outbuf;
	int err, packet_error;

	inmailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(inmailbox))
		return PTR_ERR(inmailbox);

	outmailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(outmailbox)) {
		mlx4_free_cmd_mailbox(dev, inmailbox);
		return PTR_ERR(outmailbox);
	}

	inbuf = inmailbox->buf;
	outbuf = outmailbox->buf;
	memset(inbuf, 0, 256);
	memset(outbuf, 0, 256);
	inbuf[0] = 1;
	inbuf[1] = 1;
	inbuf[2] = 1;
	inbuf[3] = 1;

	*(__be16 *) (&inbuf[16]) = MLX4_ATTR_EXTENDED_PORT_INFO;
	*(__be32 *) (&inbuf[20]) = cpu_to_be32(port);

	err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
			   MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C);

	packet_error = be16_to_cpu(*(__be16 *) (outbuf + 4));

	dev->caps.ext_port_cap[port] = (!err && !packet_error) ?
				       MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO
				       : 0;

	mlx4_free_cmd_mailbox(dev, inmailbox);
	mlx4_free_cmd_mailbox(dev, outmailbox);
	return err;
}

int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port)
{
	struct mlx4_cmd_mailbox *mailbox;
	int err;

	if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
		return 0;

	mailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(mailbox))
		return PTR_ERR(mailbox);

	memset(mailbox->buf, 0, 256);

	((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
	err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
		       MLX4_CMD_TIME_CLASS_B);

	mlx4_free_cmd_mailbox(dev, mailbox);
	return err;
}
Commit	Line	Data
2a2336f8 YP	1	/*
	2	* Copyright (c) 2007 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
	33	#include <linux/errno.h>
	34	#include <linux/if_ether.h>
ee40fa06	35	#include <linux/export.h>
2a2336f8 YP	36
	37	#include <linux/mlx4/cmd.h>
	38
	39	#include "mlx4.h"
	40
	41	#define MLX4_MAC_VALID (1ull << 63)
	42	#define MLX4_MAC_MASK 0xffffffffffffULL
	43
	44	#define MLX4_VLAN_VALID (1u << 31)
	45	#define MLX4_VLAN_MASK 0xfff
	46
	47	void mlx4_init_mac_table(struct mlx4_dev dev, struct mlx4_mac_table table)
	48	{
	49	int i;
	50
	51	mutex_init(&table->mutex);
	52	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
	53	table->entries[i] = 0;
	54	table->refs[i] = 0;
	55	}
	56	table->max = 1 << dev->caps.log_num_macs;
	57	table->total = 0;
	58	}
	59
	60	void mlx4_init_vlan_table(struct mlx4_dev dev, struct mlx4_vlan_table table)
	61	{
	62	int i;
	63
	64	mutex_init(&table->mutex);
	65	for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
	66	table->entries[i] = 0;
	67	table->refs[i] = 0;
	68	}
e72ebf5a	69	table->max = (1 << dev->caps.log_num_vlans) - MLX4_VLAN_REGULAR;
2a2336f8 YP	70	table->total = 0;
	71	}
	72
	73	static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
	74	__be64 *entries)
	75	{
	76	struct mlx4_cmd_mailbox *mailbox;
	77	u32 in_mod;
	78	int err;
	79
	80	mailbox = mlx4_alloc_cmd_mailbox(dev);
	81	if (IS_ERR(mailbox))
	82	return PTR_ERR(mailbox);
	83
	84	memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
	85
	86	in_mod = MLX4_SET_PORT_MAC_TABLE << 8 \| port;
	87	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
	88	MLX4_CMD_TIME_CLASS_B);
	89
	90	mlx4_free_cmd_mailbox(dev, mailbox);
	91	return err;
	92	}
	93
1679200f YP	94	static int mlx4_uc_steer_add(struct mlx4_dev *dev, u8 port,
1679200f YP	95	u64 mac, int *qpn, u8 reserve)
2a2336f8	96	{
1679200f YP	97	struct mlx4_qp qp;
	98	u8 gid[16] = {0};
	99	int err;
	100
	101	if (reserve) {
	102	err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
	103	if (err) {
	104	mlx4_err(dev, "Failed to reserve qp for mac registration\n");
	105	return err;
	106	}
	107	}
	108	qp.qpn = *qpn;
	109
	110	mac &= 0xffffffffffffULL;
	111	mac = cpu_to_be64(mac << 16);
	112	memcpy(&gid[10], &mac, ETH_ALEN);
	113	gid[5] = port;
	114	gid[7] = MLX4_UC_STEER << 1;
	115
	116	err = mlx4_qp_attach_common(dev, &qp, gid, 0,
	117	MLX4_PROT_ETH, MLX4_UC_STEER);
	118	if (err && reserve)
	119	mlx4_qp_release_range(dev, *qpn, 1);
	120
	121	return err;
	122	}
	123
	124	static void mlx4_uc_steer_release(struct mlx4_dev *dev, u8 port,
	125	u64 mac, int qpn, u8 free)
	126	{
	127	struct mlx4_qp qp;
	128	u8 gid[16] = {0};
	129
	130	qp.qpn = qpn;
	131	mac &= 0xffffffffffffULL;
	132	mac = cpu_to_be64(mac << 16);
	133	memcpy(&gid[10], &mac, ETH_ALEN);
	134	gid[5] = port;
	135	gid[7] = MLX4_UC_STEER << 1;
	136
	137	mlx4_qp_detach_common(dev, &qp, gid, MLX4_PROT_ETH, MLX4_UC_STEER);
	138	if (free)
	139	mlx4_qp_release_range(dev, qpn, 1);
	140	}
	141
	142	int mlx4_register_mac(struct mlx4_dev dev, u8 port, u64 mac, int qpn, u8 wrap)
	143	{
	144	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
	145	struct mlx4_mac_table *table = &info->mac_table;
	146	struct mlx4_mac_entry *entry;
2a2336f8 YP	147	int i, err = 0;
	148	int free = -1;
	149
ccf86321	150	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
1679200f	151	err = mlx4_uc_steer_add(dev, port, mac, qpn, 1);
0f6740c7	152	if (err)
1679200f	153	return err;
0f6740c7 RD	154
	155	entry = kmalloc(sizeof *entry, GFP_KERNEL);
	156	if (!entry) {
	157	mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
	158	return -ENOMEM;
	159	}
	160
	161	entry->mac = mac;
	162	err = radix_tree_insert(&info->mac_tree, *qpn, entry);
	163	if (err) {
	164	kfree(entry);
	165	mlx4_uc_steer_release(dev, port, mac, *qpn, 1);
	166	return err;
	167	}
1679200f	168	}
0f6740c7	169
2a2336f8	170	mlx4_dbg(dev, "Registering MAC: 0x%llx\n", (unsigned long long) mac);
0f6740c7	171
2a2336f8 YP	172	mutex_lock(&table->mutex);
	173	for (i = 0; i < MLX4_MAX_MAC_NUM - 1; i++) {
	174	if (free < 0 && !table->refs[i]) {
	175	free = i;
	176	continue;
	177	}
	178
	179	if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
25985edc	180	/* MAC already registered, increase references count */
2a2336f8 YP	181	++table->refs[i];
	182	goto out;
	183	}
	184	}
0926f910 EC	185
	186	if (free < 0) {
	187	err = -ENOMEM;
	188	goto out;
	189	}
	190
2a2336f8 YP	191	mlx4_dbg(dev, "Free MAC index is %d\n", free);
	192
	193	if (table->total == table->max) {
	194	/* No free mac entries */
	195	err = -ENOSPC;
	196	goto out;
	197	}
	198
	199	/* Register new MAC */
	200	table->refs[free] = 1;
	201	table->entries[free] = cpu_to_be64(mac \| MLX4_MAC_VALID);
	202
	203	err = mlx4_set_port_mac_table(dev, port, table->entries);
	204	if (unlikely(err)) {
	205	mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) mac);
	206	table->refs[free] = 0;
	207	table->entries[free] = 0;
	208	goto out;
	209	}
	210
ccf86321	211	if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER))
1679200f	212	*qpn = info->base_qpn + free;
2a2336f8 YP	213	++table->total;
	214	out:
	215	mutex_unlock(&table->mutex);
	216	return err;
	217	}
	218	EXPORT_SYMBOL_GPL(mlx4_register_mac);
	219
1679200f YP	220	static int validate_index(struct mlx4_dev *dev,
1679200f YP	221	struct mlx4_mac_table *table, int index)
2a2336f8	222	{
1679200f	223	int err = 0;
2a2336f8	224
1679200f YP	225	if (index < 0 \|\| index >= table->max \|\| !table->entries[index]) {
	226	mlx4_warn(dev, "No valid Mac entry for the given index\n");
	227	err = -EINVAL;
2a2336f8	228	}
1679200f YP	229	return err;
	230	}
	231
	232	static int find_index(struct mlx4_dev *dev,
	233	struct mlx4_mac_table *table, u64 mac)
	234	{
	235	int i;
	236	for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
	237	if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i])))
	238	return i;
	239	}
	240	/* Mac not found */
	241	return -EINVAL;
	242	}
	243
	244	void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int qpn)
	245	{
	246	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
	247	struct mlx4_mac_table *table = &info->mac_table;
	248	int index = qpn - info->base_qpn;
	249	struct mlx4_mac_entry *entry;
	250
ccf86321	251	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
1679200f YP	252	entry = radix_tree_lookup(&info->mac_tree, qpn);
	253	if (entry) {
	254	mlx4_uc_steer_release(dev, port, entry->mac, qpn, 1);
	255	radix_tree_delete(&info->mac_tree, qpn);
	256	index = find_index(dev, table, entry->mac);
	257	kfree(entry);
	258	}
2a2336f8	259	}
1679200f YP	260
	261	mutex_lock(&table->mutex);
	262
	263	if (validate_index(dev, table, index))
	264	goto out;
	265
20e72a44 YP	266	/* Check whether this address has reference count */
	267	if (!(--table->refs[index])) {
	268	table->entries[index] = 0;
	269	mlx4_set_port_mac_table(dev, port, table->entries);
	270	--table->total;
	271	}
2a2336f8 YP	272	out:
	273	mutex_unlock(&table->mutex);
	274	}
	275	EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
	276
1679200f YP	277	int mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac, u8 wrap)
	278	{
	279	struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
	280	struct mlx4_mac_table *table = &info->mac_table;
	281	int index = qpn - info->base_qpn;
	282	struct mlx4_mac_entry *entry;
	283	int err;
	284
ccf86321	285	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER) {
1679200f YP	286	entry = radix_tree_lookup(&info->mac_tree, qpn);
	287	if (!entry)
	288	return -EINVAL;
	289	index = find_index(dev, table, entry->mac);
	290	mlx4_uc_steer_release(dev, port, entry->mac, qpn, 0);
	291	entry->mac = new_mac;
	292	err = mlx4_uc_steer_add(dev, port, entry->mac, &qpn, 0);
	293	if (err \|\| index < 0)
	294	return err;
	295	}
	296
	297	mutex_lock(&table->mutex);
	298
	299	err = validate_index(dev, table, index);
	300	if (err)
	301	goto out;
	302
	303	table->entries[index] = cpu_to_be64(new_mac \| MLX4_MAC_VALID);
	304
	305	err = mlx4_set_port_mac_table(dev, port, table->entries);
	306	if (unlikely(err)) {
	307	mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) new_mac);
	308	table->entries[index] = 0;
	309	}
	310	out:
	311	mutex_unlock(&table->mutex);
	312	return err;
	313	}
	314	EXPORT_SYMBOL_GPL(mlx4_replace_mac);
2a2336f8 YP	315	static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
	316	__be32 *entries)
	317	{
	318	struct mlx4_cmd_mailbox *mailbox;
	319	u32 in_mod;
	320	int err;
	321
	322	mailbox = mlx4_alloc_cmd_mailbox(dev);
	323	if (IS_ERR(mailbox))
	324	return PTR_ERR(mailbox);
	325
	326	memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
	327	in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 \| port;
	328	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
	329	MLX4_CMD_TIME_CLASS_B);
	330
	331	mlx4_free_cmd_mailbox(dev, mailbox);
	332
	333	return err;
	334	}
	335
4c3eb3ca EC	336	int mlx4_find_cached_vlan(struct mlx4_dev dev, u8 port, u16 vid, int idx)
	337	{
	338	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
	339	int i;
	340
	341	for (i = 0; i < MLX4_MAX_VLAN_NUM; ++i) {
	342	if (table->refs[i] &&
	343	(vid == (MLX4_VLAN_MASK &
	344	be32_to_cpu(table->entries[i])))) {
	345	/* VLAN already registered, increase reference count */
	346	*idx = i;
	347	return 0;
	348	}
	349	}
	350
	351	return -ENOENT;
	352	}
	353	EXPORT_SYMBOL_GPL(mlx4_find_cached_vlan);
	354
2a2336f8 YP	355	int mlx4_register_vlan(struct mlx4_dev dev, u8 port, u16 vlan, int index)
	356	{
	357	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
	358	int i, err = 0;
	359	int free = -1;
	360
	361	mutex_lock(&table->mutex);
e72ebf5a YP	362
	363	if (table->total == table->max) {
	364	/* No free vlan entries */
	365	err = -ENOSPC;
	366	goto out;
	367	}
	368
2a2336f8 YP	369	for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
	370	if (free < 0 && (table->refs[i] == 0)) {
	371	free = i;
	372	continue;
	373	}
	374
	375	if (table->refs[i] &&
	376	(vlan == (MLX4_VLAN_MASK &
	377	be32_to_cpu(table->entries[i])))) {
25985edc	378	/* Vlan already registered, increase references count */
2a2336f8 YP	379	*index = i;
	380	++table->refs[i];
	381	goto out;
	382	}
	383	}
	384
0926f910 EC	385	if (free < 0) {
	386	err = -ENOMEM;
	387	goto out;
	388	}
	389
2a2336f8 YP	390	/* Register new MAC */
	391	table->refs[free] = 1;
	392	table->entries[free] = cpu_to_be32(vlan \| MLX4_VLAN_VALID);
	393
	394	err = mlx4_set_port_vlan_table(dev, port, table->entries);
	395	if (unlikely(err)) {
	396	mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
	397	table->refs[free] = 0;
	398	table->entries[free] = 0;
	399	goto out;
	400	}
	401
	402	*index = free;
	403	++table->total;
	404	out:
	405	mutex_unlock(&table->mutex);
	406	return err;
	407	}
	408	EXPORT_SYMBOL_GPL(mlx4_register_vlan);
	409
	410	void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index)
	411	{
	412	struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
	413
	414	if (index < MLX4_VLAN_REGULAR) {
	415	mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
	416	return;
	417	}
	418
	419	mutex_lock(&table->mutex);
	420	if (!table->refs[index]) {
	421	mlx4_warn(dev, "No vlan entry for index %d\n", index);
	422	goto out;
	423	}
	424	if (--table->refs[index]) {
	425	mlx4_dbg(dev, "Have more references for index %d,"
	426	"no need to modify vlan table\n", index);
	427	goto out;
	428	}
	429	table->entries[index] = 0;
	430	mlx4_set_port_vlan_table(dev, port, table->entries);
	431	--table->total;
	432	out:
	433	mutex_unlock(&table->mutex);
	434	}
	435	EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
7ff93f8b	436
9a5aa622 JM	437	int mlx4_get_port_ib_caps(struct mlx4_dev dev, u8 port, __be32 caps)
	438	{
	439	struct mlx4_cmd_mailbox inmailbox, outmailbox;
	440	u8 inbuf, outbuf;
	441	int err;
	442
	443	inmailbox = mlx4_alloc_cmd_mailbox(dev);
	444	if (IS_ERR(inmailbox))
	445	return PTR_ERR(inmailbox);
	446
	447	outmailbox = mlx4_alloc_cmd_mailbox(dev);
	448	if (IS_ERR(outmailbox)) {
	449	mlx4_free_cmd_mailbox(dev, inmailbox);
	450	return PTR_ERR(outmailbox);
	451	}
	452
	453	inbuf = inmailbox->buf;
	454	outbuf = outmailbox->buf;
	455	memset(inbuf, 0, 256);
	456	memset(outbuf, 0, 256);
	457	inbuf[0] = 1;
	458	inbuf[1] = 1;
	459	inbuf[2] = 1;
	460	inbuf[3] = 1;
	461	(__be16 ) (&inbuf[16]) = cpu_to_be16(0x0015);
	462	(__be32 ) (&inbuf[20]) = cpu_to_be32(port);
	463
	464	err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
	465	MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C);
	466	if (!err)
	467	caps = (__be32 *) (outbuf + 84);
	468	mlx4_free_cmd_mailbox(dev, inmailbox);
	469	mlx4_free_cmd_mailbox(dev, outmailbox);
	470	return err;
	471	}
	472
97285b78 MA	473	int mlx4_check_ext_port_caps(struct mlx4_dev *dev, u8 port)
	474	{
	475	struct mlx4_cmd_mailbox inmailbox, outmailbox;
	476	u8 inbuf, outbuf;
	477	int err, packet_error;
	478
	479	inmailbox = mlx4_alloc_cmd_mailbox(dev);
	480	if (IS_ERR(inmailbox))
	481	return PTR_ERR(inmailbox);
	482
	483	outmailbox = mlx4_alloc_cmd_mailbox(dev);
	484	if (IS_ERR(outmailbox)) {
	485	mlx4_free_cmd_mailbox(dev, inmailbox);
	486	return PTR_ERR(outmailbox);
	487	}
	488
	489	inbuf = inmailbox->buf;
	490	outbuf = outmailbox->buf;
	491	memset(inbuf, 0, 256);
	492	memset(outbuf, 0, 256);
	493	inbuf[0] = 1;
	494	inbuf[1] = 1;
	495	inbuf[2] = 1;
	496	inbuf[3] = 1;
	497
	498	(__be16 ) (&inbuf[16]) = MLX4_ATTR_EXTENDED_PORT_INFO;
	499	(__be32 ) (&inbuf[20]) = cpu_to_be32(port);
	500
	501	err = mlx4_cmd_box(dev, inmailbox->dma, outmailbox->dma, port, 3,
	502	MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C);
	503
	504	packet_error = be16_to_cpu((__be16 ) (outbuf + 4));
	505
	506	dev->caps.ext_port_cap[port] = (!err && !packet_error) ?
	507	MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO
	508	: 0;
	509
	510	mlx4_free_cmd_mailbox(dev, inmailbox);
	511	mlx4_free_cmd_mailbox(dev, outmailbox);
	512	return err;
	513	}
	514
7ff93f8b YP	515	int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port)
	516	{
	517	struct mlx4_cmd_mailbox *mailbox;
	518	int err;
7ff93f8b	519
352b09ed RD	520	if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
	521	return 0;
	522
7ff93f8b YP	523	mailbox = mlx4_alloc_cmd_mailbox(dev);
	524	if (IS_ERR(mailbox))
	525	return PTR_ERR(mailbox);
	526
	527	memset(mailbox->buf, 0, 256);
793730bf YP	528
	529	((__be32 *) mailbox->buf)[1] = dev->caps.ib_port_def_cap[port];
	530	err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
7ff93f8b YP	531	MLX4_CMD_TIME_CLASS_B);
	532
	533	mlx4_free_cmd_mailbox(dev, mailbox);
	534	return err;
	535	}