aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/mellanox/mlx4/port.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/port.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/port.c534
1 files changed, 534 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c
new file mode 100644
index 000000000000..a44f080fdfe5
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx4/port.c
@@ -0,0 +1,534 @@
+/*
+ * 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/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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 19:25:27 +0000