--- /dev/null
+/*
+ * Copyright (c) 2012 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.
+ */
+ /***********************************************************/
+/*This file support the handling of the Alias GUID feature. */
+/***********************************************************/
+#include <rdma/ib_mad.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_cache.h>
+#include <rdma/ib_sa.h>
+#include <rdma/ib_pack.h>
+#include <linux/mlx4/cmd.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <rdma/ib_user_verbs.h>
+#include <linux/delay.h>
+#include "mlx4_ib.h"
+
+/*
+The driver keeps the current state of all guids, as they are in the HW.
+Whenever we receive an smp mad GUIDInfo record, the data will be cached.
+*/
+
+struct mlx4_alias_guid_work_context {
+ u8 port;
+ struct mlx4_ib_dev *dev ;
+ struct ib_sa_query *sa_query;
+ struct completion done;
+ int query_id;
+ struct list_head list;
+ int block_num;
+};
+
+struct mlx4_next_alias_guid_work {
+ u8 port;
+ u8 block_num;
+ struct mlx4_sriov_alias_guid_info_rec_det rec_det;
+};
+
+
+void mlx4_ib_update_cache_on_guid_change(struct mlx4_ib_dev *dev, int block_num,
+ u8 port_num, u8 *p_data)
+{
+ int i;
+ u64 guid_indexes;
+ int slave_id;
+ int port_index = port_num - 1;
+
+ if (!mlx4_is_master(dev->dev))
+ return;
+
+ guid_indexes = be64_to_cpu((__force __be64) dev->sriov.alias_guid.
+ ports_guid[port_num - 1].
+ all_rec_per_port[block_num].guid_indexes);
+ pr_debug("port: %d, guid_indexes: 0x%llx\n", port_num, guid_indexes);
+
+ for (i = 0; i < NUM_ALIAS_GUID_IN_REC; i++) {
+ /* The location of the specific index starts from bit number 4
+ * until bit num 11 */
+ if (test_bit(i + 4, (unsigned long *)&guid_indexes)) {
+ slave_id = (block_num * NUM_ALIAS_GUID_IN_REC) + i ;
+ if (slave_id >= dev->dev->num_slaves) {
+ pr_debug("The last slave: %d\n", slave_id);
+ return;
+ }
+
+ /* cache the guid: */
+ memcpy(&dev->sriov.demux[port_index].guid_cache[slave_id],
+ &p_data[i * GUID_REC_SIZE],
+ GUID_REC_SIZE);
+ } else
+ pr_debug("Guid number: %d in block: %d"
+ " was not updated\n", i, block_num);
+ }
+}
+
+static __be64 get_cached_alias_guid(struct mlx4_ib_dev *dev, int port, int index)
+{
+ if (index >= NUM_ALIAS_GUID_PER_PORT) {
+ pr_err("%s: ERROR: asked for index:%d\n", __func__, index);
+ return (__force __be64) ((u64) 0xFFFFFFFFFFFFFFFFUL);
+ }
+ return *(__be64 *)&dev->sriov.demux[port - 1].guid_cache[index];
+}
+
+
+static ib_sa_comp_mask get_aguid_comp_mask_from_ix(int index)
+{
+ return IB_SA_COMP_MASK(4 + index);
+}
+
+/*
+ * Whenever new GUID is set/unset (guid table change) create event and
+ * notify the relevant slave (master also should be notified).
+ * If the GUID value is not as we have in the cache the slave will not be
+ * updated; in this case it waits for the smp_snoop or the port management
+ * event to call the function and to update the slave.
+ * block_number - the index of the block (16 blocks available)
+ * port_number - 1 or 2
+ */
+void mlx4_ib_notify_slaves_on_guid_change(struct mlx4_ib_dev *dev,
+ int block_num, u8 port_num,
+ u8 *p_data)
+{
+ int i;
+ u64 guid_indexes;
+ int slave_id;
+ enum slave_port_state new_state;
+ enum slave_port_state prev_state;
+ __be64 tmp_cur_ag, form_cache_ag;
+ enum slave_port_gen_event gen_event;
+
+ if (!mlx4_is_master(dev->dev))
+ return;
+
+ guid_indexes = be64_to_cpu((__force __be64) dev->sriov.alias_guid.
+ ports_guid[port_num - 1].
+ all_rec_per_port[block_num].guid_indexes);
+ pr_debug("port: %d, guid_indexes: 0x%llx\n", port_num, guid_indexes);
+
+ /*calculate the slaves and notify them*/
+ for (i = 0; i < NUM_ALIAS_GUID_IN_REC; i++) {
+ /* the location of the specific index runs from bits 4..11 */
+ if (!(test_bit(i + 4, (unsigned long *)&guid_indexes)))
+ continue;
+
+ slave_id = (block_num * NUM_ALIAS_GUID_IN_REC) + i ;
+ if (slave_id >= dev->dev->num_slaves)
+ return;
+ tmp_cur_ag = *(__be64 *)&p_data[i * GUID_REC_SIZE];
+ form_cache_ag = get_cached_alias_guid(dev, port_num,
+ (NUM_ALIAS_GUID_IN_REC * block_num) + i);
+ /*
+ * Check if guid is not the same as in the cache,
+ * If it is different, wait for the snoop_smp or the port mgmt
+ * change event to update the slave on its port state change
+ */
+ if (tmp_cur_ag != form_cache_ag)
+ continue;
+ mlx4_gen_guid_change_eqe(dev->dev, slave_id, port_num);
+
+ /*2 cases: Valid GUID, and Invalid Guid*/
+
+ if (tmp_cur_ag != MLX4_NOT_SET_GUID) { /*valid GUID*/
+ prev_state = mlx4_get_slave_port_state(dev->dev, slave_id, port_num);
+ new_state = set_and_calc_slave_port_state(dev->dev, slave_id, port_num,
+ MLX4_PORT_STATE_IB_PORT_STATE_EVENT_GID_VALID,
+ &gen_event);
+ pr_debug("slave: %d, port: %d prev_port_state: %d,"
+ " new_port_state: %d, gen_event: %d\n",
+ slave_id, port_num, prev_state, new_state, gen_event);
+ if (gen_event == SLAVE_PORT_GEN_EVENT_UP) {
+ pr_debug("sending PORT_UP event to slave: %d, port: %d\n",
+ slave_id, port_num);
+ mlx4_gen_port_state_change_eqe(dev->dev, slave_id,
+ port_num, MLX4_PORT_CHANGE_SUBTYPE_ACTIVE);
+ }
+ } else { /* request to invalidate GUID */
+ set_and_calc_slave_port_state(dev->dev, slave_id, port_num,
+ MLX4_PORT_STATE_IB_EVENT_GID_INVALID,
+ &gen_event);
+ pr_debug("sending PORT DOWN event to slave: %d, port: %d\n",
+ slave_id, port_num);
+ mlx4_gen_port_state_change_eqe(dev->dev, slave_id, port_num,
+ MLX4_PORT_CHANGE_SUBTYPE_DOWN);
+ }
+ }
+}
+
+static void aliasguid_query_handler(int status,
+ struct ib_sa_guidinfo_rec *guid_rec,
+ void *context)
+{
+ struct mlx4_ib_dev *dev;
+ struct mlx4_alias_guid_work_context *cb_ctx = context;
+ u8 port_index ;
+ int i;
+ struct mlx4_sriov_alias_guid_info_rec_det *rec;
+ unsigned long flags, flags1;
+
+ if (!context)
+ return;
+
+ dev = cb_ctx->dev;
+ port_index = cb_ctx->port - 1;
+ rec = &dev->sriov.alias_guid.ports_guid[port_index].
+ all_rec_per_port[cb_ctx->block_num];
+
+ if (status) {
+ rec->status = MLX4_GUID_INFO_STATUS_IDLE;
+ pr_debug("(port: %d) failed: status = %d\n",
+ cb_ctx->port, status);
+ goto out;
+ }
+
+ if (guid_rec->block_num != cb_ctx->block_num) {
+ pr_err("block num mismatch: %d != %d\n",
+ cb_ctx->block_num, guid_rec->block_num);
+ goto out;
+ }
+
+ pr_debug("lid/port: %d/%d, block_num: %d\n",
+ be16_to_cpu(guid_rec->lid), cb_ctx->port,
+ guid_rec->block_num);
+
+ rec = &dev->sriov.alias_guid.ports_guid[port_index].
+ all_rec_per_port[guid_rec->block_num];
+
+ rec->status = MLX4_GUID_INFO_STATUS_SET;
+ rec->method = MLX4_GUID_INFO_RECORD_SET;
+
+ for (i = 0 ; i < NUM_ALIAS_GUID_IN_REC; i++) {
+ __be64 tmp_cur_ag;
+ tmp_cur_ag = *(__be64 *)&guid_rec->guid_info_list[i * GUID_REC_SIZE];
+ /* check if the SM didn't assign one of the records.
+ * if it didn't, if it was not sysadmin request:
+ * ask the SM to give a new GUID, (instead of the driver request).
+ */
+ if (tmp_cur_ag == MLX4_NOT_SET_GUID) {
+ mlx4_ib_warn(&dev->ib_dev, "%s:Record num %d in "
+ "block_num: %d was declined by SM, "
+ "ownership by %d (0 = driver, 1=sysAdmin,"
+ " 2=None)\n", __func__, i,
+ guid_rec->block_num, rec->ownership);
+ if (rec->ownership == MLX4_GUID_DRIVER_ASSIGN) {
+ /* if it is driver assign, asks for new GUID from SM*/
+ *(__be64 *)&rec->all_recs[i * GUID_REC_SIZE] =
+ MLX4_NOT_SET_GUID;
+
+ /* Mark the record as not assigned, and let it
+ * be sent again in the next work sched.*/
+ rec->status = MLX4_GUID_INFO_STATUS_IDLE;
+ rec->guid_indexes |= get_aguid_comp_mask_from_ix(i);
+ }
+ } else {
+ /* properly assigned record. */
+ /* We save the GUID we just got from the SM in the
+ * admin_guid in order to be persistent, and in the
+ * request from the sm the process will ask for the same GUID */
+ if (rec->ownership == MLX4_GUID_SYSADMIN_ASSIGN &&
+ tmp_cur_ag != *(__be64 *)&rec->all_recs[i * GUID_REC_SIZE]) {
+ /* the sysadmin assignment failed.*/
+ mlx4_ib_warn(&dev->ib_dev, "%s: Failed to set"
+ " admin guid after SysAdmin "
+ "configuration. "
+ "Record num %d in block_num:%d "
+ "was declined by SM, "
+ "new val(0x%llx) was kept\n",
+ __func__, i,
+ guid_rec->block_num,
+ be64_to_cpu(*(__be64 *) &
+ rec->all_recs[i * GUID_REC_SIZE]));
+ } else {
+ memcpy(&rec->all_recs[i * GUID_REC_SIZE],
+ &guid_rec->guid_info_list[i * GUID_REC_SIZE],
+ GUID_REC_SIZE);
+ }
+ }
+ }
+ /*
+ The func is call here to close the cases when the
+ sm doesn't send smp, so in the sa response the driver
+ notifies the slave.
+ */
+ mlx4_ib_notify_slaves_on_guid_change(dev, guid_rec->block_num,
+ cb_ctx->port,
+ guid_rec->guid_info_list);
+out:
+ spin_lock_irqsave(&dev->sriov.going_down_lock, flags);
+ spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ if (!dev->sriov.is_going_down)
+ queue_delayed_work(dev->sriov.alias_guid.ports_guid[port_index].wq,
+ &dev->sriov.alias_guid.ports_guid[port_index].
+ alias_guid_work, 0);
+ if (cb_ctx->sa_query) {
+ list_del(&cb_ctx->list);
+ kfree(cb_ctx);
+ } else
+ complete(&cb_ctx->done);
+ spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags);
+}
+
+static void invalidate_guid_record(struct mlx4_ib_dev *dev, u8 port, int index)
+{
+ int i;
+ u64 cur_admin_val;
+ ib_sa_comp_mask comp_mask = 0;
+
+ dev->sriov.alias_guid.ports_guid[port - 1].all_rec_per_port[index].status
+ = MLX4_GUID_INFO_STATUS_IDLE;
+ dev->sriov.alias_guid.ports_guid[port - 1].all_rec_per_port[index].method
+ = MLX4_GUID_INFO_RECORD_SET;
+
+ /* calculate the comp_mask for that record.*/
+ for (i = 0; i < NUM_ALIAS_GUID_IN_REC; i++) {
+ cur_admin_val =
+ *(u64 *)&dev->sriov.alias_guid.ports_guid[port - 1].
+ all_rec_per_port[index].all_recs[GUID_REC_SIZE * i];
+ /*
+ check the admin value: if it's for delete (~00LL) or
+ it is the first guid of the first record (hw guid) or
+ the records is not in ownership of the sysadmin and the sm doesn't
+ need to assign GUIDs, then don't put it up for assignment.
+ */
+ if (MLX4_GUID_FOR_DELETE_VAL == cur_admin_val ||
+ (!index && !i) ||
+ MLX4_GUID_NONE_ASSIGN == dev->sriov.alias_guid.
+ ports_guid[port - 1].all_rec_per_port[index].ownership)
+ continue;
+ comp_mask |= get_aguid_comp_mask_from_ix(i);
+ }
+ dev->sriov.alias_guid.ports_guid[port - 1].
+ all_rec_per_port[index].guid_indexes = comp_mask;
+}
+
+static int set_guid_rec(struct ib_device *ibdev,
+ u8 port, int index,
+ struct mlx4_sriov_alias_guid_info_rec_det *rec_det)
+{
+ int err;
+ struct mlx4_ib_dev *dev = to_mdev(ibdev);
+ struct ib_sa_guidinfo_rec guid_info_rec;
+ ib_sa_comp_mask comp_mask;
+ struct ib_port_attr attr;
+ struct mlx4_alias_guid_work_context *callback_context;
+ unsigned long resched_delay, flags, flags1;
+ struct list_head *head =
+ &dev->sriov.alias_guid.ports_guid[port - 1].cb_list;
+
+ err = __mlx4_ib_query_port(ibdev, port, &attr, 1);
+ if (err) {
+ pr_debug("mlx4_ib_query_port failed (err: %d), port: %d\n",
+ err, port);
+ return err;
+ }
+ /*check the port was configured by the sm, otherwise no need to send */
+ if (attr.state != IB_PORT_ACTIVE) {
+ pr_debug("port %d not active...rescheduling\n", port);
+ resched_delay = 5 * HZ;
+ err = -EAGAIN;
+ goto new_schedule;
+ }
+
+ callback_context = kmalloc(sizeof *callback_context, GFP_KERNEL);
+ if (!callback_context) {
+ err = -ENOMEM;
+ resched_delay = HZ * 5;
+ goto new_schedule;
+ }
+ callback_context->port = port;
+ callback_context->dev = dev;
+ callback_context->block_num = index;
+
+ memset(&guid_info_rec, 0, sizeof (struct ib_sa_guidinfo_rec));
+
+ guid_info_rec.lid = cpu_to_be16(attr.lid);
+ guid_info_rec.block_num = index;
+
+ memcpy(guid_info_rec.guid_info_list, rec_det->all_recs,
+ GUID_REC_SIZE * NUM_ALIAS_GUID_IN_REC);
+ comp_mask = IB_SA_GUIDINFO_REC_LID | IB_SA_GUIDINFO_REC_BLOCK_NUM |
+ rec_det->guid_indexes;
+
+ init_completion(&callback_context->done);
+ spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ list_add_tail(&callback_context->list, head);
+ spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1);
+
+ callback_context->query_id =
+ ib_sa_guid_info_rec_query(dev->sriov.alias_guid.sa_client,
+ ibdev, port, &guid_info_rec,
+ comp_mask, rec_det->method, 1000,
+ GFP_KERNEL, aliasguid_query_handler,
+ callback_context,
+ &callback_context->sa_query);
+ if (callback_context->query_id < 0) {
+ pr_debug("ib_sa_guid_info_rec_query failed, query_id: "
+ "%d. will reschedule to the next 1 sec.\n",
+ callback_context->query_id);
+ spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ list_del(&callback_context->list);
+ kfree(callback_context);
+ spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ resched_delay = 1 * HZ;
+ err = -EAGAIN;
+ goto new_schedule;
+ }
+ err = 0;
+ goto out;
+
+new_schedule:
+ spin_lock_irqsave(&dev->sriov.going_down_lock, flags);
+ spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ invalidate_guid_record(dev, port, index);
+ if (!dev->sriov.is_going_down) {
+ queue_delayed_work(dev->sriov.alias_guid.ports_guid[port - 1].wq,
+ &dev->sriov.alias_guid.ports_guid[port - 1].alias_guid_work,
+ resched_delay);
+ }
+ spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags);
+
+out:
+ return err;
+}
+
+void mlx4_ib_invalidate_all_guid_record(struct mlx4_ib_dev *dev, int port)
+{
+ int i;
+ unsigned long flags, flags1;
+
+ pr_debug("port %d\n", port);
+
+ spin_lock_irqsave(&dev->sriov.going_down_lock, flags);
+ spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ for (i = 0; i < NUM_ALIAS_GUID_REC_IN_PORT; i++)
+ invalidate_guid_record(dev, port, i);
+
+ if (mlx4_is_master(dev->dev) && !dev->sriov.is_going_down) {
+ /*
+ make sure no work waits in the queue, if the work is already
+ queued(not on the timer) the cancel will fail. That is not a problem
+ because we just want the work started.
+ */
+ __cancel_delayed_work(&dev->sriov.alias_guid.
+ ports_guid[port - 1].alias_guid_work);
+ queue_delayed_work(dev->sriov.alias_guid.ports_guid[port - 1].wq,
+ &dev->sriov.alias_guid.ports_guid[port - 1].alias_guid_work,
+ 0);
+ }
+ spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags);
+}
+
+/* The function returns the next record that was
+ * not configured (or failed to be configured) */
+static int get_next_record_to_update(struct mlx4_ib_dev *dev, u8 port,
+ struct mlx4_next_alias_guid_work *rec)
+{
+ int j;
+ unsigned long flags;
+
+ for (j = 0; j < NUM_ALIAS_GUID_REC_IN_PORT; j++) {
+ spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags);
+ if (dev->sriov.alias_guid.ports_guid[port].all_rec_per_port[j].status ==
+ MLX4_GUID_INFO_STATUS_IDLE) {
+ memcpy(&rec->rec_det,
+ &dev->sriov.alias_guid.ports_guid[port].all_rec_per_port[j],
+ sizeof (struct mlx4_sriov_alias_guid_info_rec_det));
+ rec->port = port;
+ rec->block_num = j;
+ dev->sriov.alias_guid.ports_guid[port].all_rec_per_port[j].status =
+ MLX4_GUID_INFO_STATUS_PENDING;
+ spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags);
+ return 0;
+ }
+ spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags);
+ }
+ return -ENOENT;
+}
+
+static void set_administratively_guid_record(struct mlx4_ib_dev *dev, int port,
+ int rec_index,
+ struct mlx4_sriov_alias_guid_info_rec_det *rec_det)
+{
+ dev->sriov.alias_guid.ports_guid[port].all_rec_per_port[rec_index].guid_indexes =
+ rec_det->guid_indexes;
+ memcpy(dev->sriov.alias_guid.ports_guid[port].all_rec_per_port[rec_index].all_recs,
+ rec_det->all_recs, NUM_ALIAS_GUID_IN_REC * GUID_REC_SIZE);
+ dev->sriov.alias_guid.ports_guid[port].all_rec_per_port[rec_index].status =
+ rec_det->status;
+}
+
+static void set_all_slaves_guids(struct mlx4_ib_dev *dev, int port)
+{
+ int j;
+ struct mlx4_sriov_alias_guid_info_rec_det rec_det ;
+
+ for (j = 0 ; j < NUM_ALIAS_GUID_REC_IN_PORT ; j++) {
+ memset(rec_det.all_recs, 0, NUM_ALIAS_GUID_IN_REC * GUID_REC_SIZE);
+ rec_det.guid_indexes = (!j ? 0 : IB_SA_GUIDINFO_REC_GID0) |
+ IB_SA_GUIDINFO_REC_GID1 | IB_SA_GUIDINFO_REC_GID2 |
+ IB_SA_GUIDINFO_REC_GID3 | IB_SA_GUIDINFO_REC_GID4 |
+ IB_SA_GUIDINFO_REC_GID5 | IB_SA_GUIDINFO_REC_GID6 |
+ IB_SA_GUIDINFO_REC_GID7;
+ rec_det.status = MLX4_GUID_INFO_STATUS_IDLE;
+ set_administratively_guid_record(dev, port, j, &rec_det);
+ }
+}
+
+static void alias_guid_work(struct work_struct *work)
+{
+ struct delayed_work *delay = to_delayed_work(work);
+ int ret = 0;
+ struct mlx4_next_alias_guid_work *rec;
+ struct mlx4_sriov_alias_guid_port_rec_det *sriov_alias_port =
+ container_of(delay, struct mlx4_sriov_alias_guid_port_rec_det,
+ alias_guid_work);
+ struct mlx4_sriov_alias_guid *sriov_alias_guid = sriov_alias_port->parent;
+ struct mlx4_ib_sriov *ib_sriov = container_of(sriov_alias_guid,
+ struct mlx4_ib_sriov,
+ alias_guid);
+ struct mlx4_ib_dev *dev = container_of(ib_sriov, struct mlx4_ib_dev, sriov);
+
+ rec = kzalloc(sizeof *rec, GFP_KERNEL);
+ if (!rec) {
+ pr_err("alias_guid_work: No Memory\n");
+ return;
+ }
+
+ pr_debug("starting [port: %d]...\n", sriov_alias_port->port + 1);
+ ret = get_next_record_to_update(dev, sriov_alias_port->port, rec);
+ if (ret) {
+ pr_debug("No more records to update.\n");
+ goto out;
+ }
+
+ set_guid_rec(&dev->ib_dev, rec->port + 1, rec->block_num,
+ &rec->rec_det);
+
+out:
+ kfree(rec);
+}
+
+
+void mlx4_ib_init_alias_guid_work(struct mlx4_ib_dev *dev, int port)
+{
+ unsigned long flags, flags1;
+
+ if (!mlx4_is_master(dev->dev))
+ return;
+ spin_lock_irqsave(&dev->sriov.going_down_lock, flags);
+ spin_lock_irqsave(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ if (!dev->sriov.is_going_down) {
+ queue_delayed_work(dev->sriov.alias_guid.ports_guid[port].wq,
+ &dev->sriov.alias_guid.ports_guid[port].alias_guid_work, 0);
+ }
+ spin_unlock_irqrestore(&dev->sriov.alias_guid.ag_work_lock, flags1);
+ spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags);
+}
+
+void mlx4_ib_destroy_alias_guid_service(struct mlx4_ib_dev *dev)
+{
+ int i;
+ struct mlx4_ib_sriov *sriov = &dev->sriov;
+ struct mlx4_alias_guid_work_context *cb_ctx;
+ struct mlx4_sriov_alias_guid_port_rec_det *det;
+ struct ib_sa_query *sa_query;
+ unsigned long flags;
+
+ for (i = 0 ; i < dev->num_ports; i++) {
+ cancel_delayed_work(&dev->sriov.alias_guid.ports_guid[i].alias_guid_work);
+ det = &sriov->alias_guid.ports_guid[i];
+ spin_lock_irqsave(&sriov->alias_guid.ag_work_lock, flags);
+ while (!list_empty(&det->cb_list)) {
+ cb_ctx = list_entry(det->cb_list.next,
+ struct mlx4_alias_guid_work_context,
+ list);
+ sa_query = cb_ctx->sa_query;
+ cb_ctx->sa_query = NULL;
+ list_del(&cb_ctx->list);
+ spin_unlock_irqrestore(&sriov->alias_guid.ag_work_lock, flags);
+ ib_sa_cancel_query(cb_ctx->query_id, sa_query);
+ wait_for_completion(&cb_ctx->done);
+ kfree(cb_ctx);
+ spin_lock_irqsave(&sriov->alias_guid.ag_work_lock, flags);
+ }
+ spin_unlock_irqrestore(&sriov->alias_guid.ag_work_lock, flags);
+ }
+ for (i = 0 ; i < dev->num_ports; i++) {
+ flush_workqueue(dev->sriov.alias_guid.ports_guid[i].wq);
+ destroy_workqueue(dev->sriov.alias_guid.ports_guid[i].wq);
+ }
+ ib_sa_unregister_client(dev->sriov.alias_guid.sa_client);
+ kfree(dev->sriov.alias_guid.sa_client);
+}
+
+int mlx4_ib_init_alias_guid_service(struct mlx4_ib_dev *dev)
+{
+ char alias_wq_name[15];
+ int ret = 0;
+ int i, j, k;
+ union ib_gid gid;
+
+ if (!mlx4_is_master(dev->dev))
+ return 0;
+ dev->sriov.alias_guid.sa_client =
+ kzalloc(sizeof *dev->sriov.alias_guid.sa_client, GFP_KERNEL);
+ if (!dev->sriov.alias_guid.sa_client)
+ return -ENOMEM;
+
+ ib_sa_register_client(dev->sriov.alias_guid.sa_client);
+
+ spin_lock_init(&dev->sriov.alias_guid.ag_work_lock);
+
+ for (i = 1; i <= dev->num_ports; ++i) {
+ if (dev->ib_dev.query_gid(&dev->ib_dev , i, 0, &gid)) {
+ ret = -EFAULT;
+ goto err_unregister;
+ }
+ }
+
+ for (i = 0 ; i < dev->num_ports; i++) {
+ memset(&dev->sriov.alias_guid.ports_guid[i], 0,
+ sizeof (struct mlx4_sriov_alias_guid_port_rec_det));
+ /*Check if the SM doesn't need to assign the GUIDs*/
+ for (j = 0; j < NUM_ALIAS_GUID_REC_IN_PORT; j++) {
+ if (mlx4_ib_sm_guid_assign) {
+ dev->sriov.alias_guid.ports_guid[i].
+ all_rec_per_port[j].
+ ownership = MLX4_GUID_DRIVER_ASSIGN;
+ continue;
+ }
+ dev->sriov.alias_guid.ports_guid[i].all_rec_per_port[j].
+ ownership = MLX4_GUID_NONE_ASSIGN;
+ /*mark each val as it was deleted,
+ till the sysAdmin will give it valid val*/
+ for (k = 0; k < NUM_ALIAS_GUID_IN_REC; k++) {
+ *(__be64 *)&dev->sriov.alias_guid.ports_guid[i].
+ all_rec_per_port[j].all_recs[GUID_REC_SIZE * k] =
+ cpu_to_be64(MLX4_GUID_FOR_DELETE_VAL);
+ }
+ }
+ INIT_LIST_HEAD(&dev->sriov.alias_guid.ports_guid[i].cb_list);
+ /*prepare the records, set them to be allocated by sm*/
+ for (j = 0 ; j < NUM_ALIAS_GUID_REC_IN_PORT; j++)
+ invalidate_guid_record(dev, i + 1, j);
+
+ dev->sriov.alias_guid.ports_guid[i].parent = &dev->sriov.alias_guid;
+ dev->sriov.alias_guid.ports_guid[i].port = i;
+ if (mlx4_ib_sm_guid_assign)
+ set_all_slaves_guids(dev, i);
+
+ snprintf(alias_wq_name, sizeof alias_wq_name, "alias_guid%d", i);
+ dev->sriov.alias_guid.ports_guid[i].wq =
+ create_singlethread_workqueue(alias_wq_name);
+ if (!dev->sriov.alias_guid.ports_guid[i].wq) {
+ ret = -ENOMEM;
+ goto err_thread;
+ }
+ INIT_DELAYED_WORK(&dev->sriov.alias_guid.ports_guid[i].alias_guid_work,
+ alias_guid_work);
+ }
+ return 0;
+
+err_thread:
+ for (--i; i >= 0; i--) {
+ destroy_workqueue(dev->sriov.alias_guid.ports_guid[i].wq);
+ dev->sriov.alias_guid.ports_guid[i].wq = NULL;
+ }
+
+err_unregister:
+ ib_sa_unregister_client(dev->sriov.alias_guid.sa_client);
+ kfree(dev->sriov.alias_guid.sa_client);
+ dev->sriov.alias_guid.sa_client = NULL;
+ pr_err("init_alias_guid_service: Failed. (ret:%d)\n", ret);
+ return ret;
+}
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff