IB/cm: Remove compare_data checks
Now that there are no ib_cm clients using the compare_data feature for matching IB CM requests' private data, remove the compare_data parameter of ib_cm_listen and remove the code implementing the feature. Signed-off-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Haggai Eran
Doug Ledford
parent
51efe394bc
commit
73fec7fd04
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@ -222,7 +222,6 @@ struct cm_id_private {
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/* todo: use alternate port on send failure */
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struct cm_av av;
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struct cm_av alt_av;
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struct ib_cm_compare_data *compare_data;
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void *private_data;
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__be64 tid;
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@ -443,40 +442,6 @@ static struct cm_id_private * cm_acquire_id(__be32 local_id, __be32 remote_id)
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return cm_id_priv;
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}
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static void cm_mask_copy(u32 *dst, const u32 *src, const u32 *mask)
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{
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int i;
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for (i = 0; i < IB_CM_COMPARE_SIZE; i++)
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dst[i] = src[i] & mask[i];
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}
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static int cm_compare_data(struct ib_cm_compare_data *src_data,
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struct ib_cm_compare_data *dst_data)
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{
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u32 src[IB_CM_COMPARE_SIZE];
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u32 dst[IB_CM_COMPARE_SIZE];
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if (!src_data || !dst_data)
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return 0;
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cm_mask_copy(src, src_data->data, dst_data->mask);
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cm_mask_copy(dst, dst_data->data, src_data->mask);
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return memcmp(src, dst, sizeof(src));
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}
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static int cm_compare_private_data(u32 *private_data,
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struct ib_cm_compare_data *dst_data)
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{
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u32 src[IB_CM_COMPARE_SIZE];
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if (!dst_data)
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return 0;
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cm_mask_copy(src, private_data, dst_data->mask);
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return memcmp(src, dst_data->data, sizeof(src));
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}
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/*
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* Trivial helpers to strip endian annotation and compare; the
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* endianness doesn't actually matter since we just need a stable
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@ -509,18 +474,14 @@ static struct cm_id_private * cm_insert_listen(struct cm_id_private *cm_id_priv)
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struct cm_id_private *cur_cm_id_priv;
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__be64 service_id = cm_id_priv->id.service_id;
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__be64 service_mask = cm_id_priv->id.service_mask;
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int data_cmp;
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while (*link) {
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parent = *link;
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cur_cm_id_priv = rb_entry(parent, struct cm_id_private,
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service_node);
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data_cmp = cm_compare_data(cm_id_priv->compare_data,
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cur_cm_id_priv->compare_data);
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if ((cur_cm_id_priv->id.service_mask & service_id) ==
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(service_mask & cur_cm_id_priv->id.service_id) &&
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(cm_id_priv->id.device == cur_cm_id_priv->id.device) &&
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!data_cmp)
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(cm_id_priv->id.device == cur_cm_id_priv->id.device))
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return cur_cm_id_priv;
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if (cm_id_priv->id.device < cur_cm_id_priv->id.device)
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@ -531,8 +492,6 @@ static struct cm_id_private * cm_insert_listen(struct cm_id_private *cm_id_priv)
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link = &(*link)->rb_left;
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else if (be64_gt(service_id, cur_cm_id_priv->id.service_id))
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link = &(*link)->rb_right;
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else if (data_cmp < 0)
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link = &(*link)->rb_left;
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else
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link = &(*link)->rb_right;
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}
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@ -542,20 +501,16 @@ static struct cm_id_private * cm_insert_listen(struct cm_id_private *cm_id_priv)
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}
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static struct cm_id_private * cm_find_listen(struct ib_device *device,
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__be64 service_id,
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u32 *private_data)
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__be64 service_id)
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{
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struct rb_node *node = cm.listen_service_table.rb_node;
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struct cm_id_private *cm_id_priv;
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int data_cmp;
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while (node) {
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cm_id_priv = rb_entry(node, struct cm_id_private, service_node);
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data_cmp = cm_compare_private_data(private_data,
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cm_id_priv->compare_data);
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if ((cm_id_priv->id.service_mask & service_id) ==
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cm_id_priv->id.service_id &&
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(cm_id_priv->id.device == device) && !data_cmp)
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(cm_id_priv->id.device == device))
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return cm_id_priv;
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if (device < cm_id_priv->id.device)
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@ -566,8 +521,6 @@ static struct cm_id_private * cm_find_listen(struct ib_device *device,
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node = node->rb_left;
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else if (be64_gt(service_id, cm_id_priv->id.service_id))
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node = node->rb_right;
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else if (data_cmp < 0)
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node = node->rb_left;
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else
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node = node->rb_right;
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}
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@ -939,7 +892,6 @@ static void cm_destroy_id(struct ib_cm_id *cm_id, int err)
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wait_for_completion(&cm_id_priv->comp);
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while ((work = cm_dequeue_work(cm_id_priv)) != NULL)
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cm_free_work(work);
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kfree(cm_id_priv->compare_data);
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kfree(cm_id_priv->private_data);
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kfree(cm_id_priv);
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}
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@ -962,20 +914,11 @@ EXPORT_SYMBOL(ib_destroy_cm_id);
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* range of service IDs. If set to 0, the service ID is matched
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* exactly. This parameter is ignored if %service_id is set to
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* IB_CM_ASSIGN_SERVICE_ID.
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* @compare_data: This parameter is optional. It specifies data that must
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* appear in the private data of a connection request for the specified
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* listen request.
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* @lock: If set, lock the cm.lock spin-lock when adding the id to the
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* listener tree. When false, the caller must already hold the spin-lock,
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* and compare_data must be NULL.
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*/
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static int __ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id,
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__be64 service_mask,
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struct ib_cm_compare_data *compare_data,
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bool lock)
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__be64 service_mask)
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{
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struct cm_id_private *cm_id_priv, *cur_cm_id_priv;
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unsigned long flags = 0;
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int ret = 0;
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service_mask = service_mask ? service_mask : ~cpu_to_be64(0);
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@ -988,22 +931,9 @@ static int __ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id,
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if (cm_id->state != IB_CM_IDLE)
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return -EINVAL;
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if (compare_data) {
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cm_id_priv->compare_data = kzalloc(sizeof *compare_data,
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GFP_KERNEL);
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if (!cm_id_priv->compare_data)
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return -ENOMEM;
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cm_mask_copy(cm_id_priv->compare_data->data,
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compare_data->data, compare_data->mask);
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memcpy(cm_id_priv->compare_data->mask, compare_data->mask,
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sizeof(compare_data->mask));
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}
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cm_id->state = IB_CM_LISTEN;
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if (lock)
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spin_lock_irqsave(&cm.lock, flags);
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++cm_id_priv->listen_sharecount;
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if (service_id == IB_CM_ASSIGN_SERVICE_ID) {
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cm_id->service_id = cpu_to_be64(cm.listen_service_id++);
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cm_id->service_mask = ~cpu_to_be64(0);
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@ -1016,22 +946,21 @@ static int __ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id,
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if (cur_cm_id_priv) {
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cm_id->state = IB_CM_IDLE;
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--cm_id_priv->listen_sharecount;
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kfree(cm_id_priv->compare_data);
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cm_id_priv->compare_data = NULL;
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ret = -EBUSY;
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}
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if (lock)
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spin_unlock_irqrestore(&cm.lock, flags);
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return ret;
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}
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int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, __be64 service_mask,
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struct ib_cm_compare_data *compare_data)
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int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, __be64 service_mask)
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{
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return __ib_cm_listen(cm_id, service_id, service_mask, compare_data,
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true);
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unsigned long flags;
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int ret;
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spin_lock_irqsave(&cm.lock, flags);
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ret = __ib_cm_listen(cm_id, service_id, service_mask);
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spin_unlock_irqrestore(&cm.lock, flags);
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return ret;
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}
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EXPORT_SYMBOL(ib_cm_listen);
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@ -1071,7 +1000,7 @@ struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device,
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goto new_id;
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/* Find an existing ID */
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cm_id_priv = cm_find_listen(device, service_id, NULL);
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cm_id_priv = cm_find_listen(device, service_id);
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if (cm_id_priv) {
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if (cm_id->cm_handler != cm_handler || cm_id->context) {
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/* Sharing an ib_cm_id with different handlers is not
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@ -1090,7 +1019,7 @@ struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device,
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new_id:
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/* Use newly created ID */
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err = __ib_cm_listen(cm_id, service_id, 0, NULL, false);
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err = __ib_cm_listen(cm_id, service_id, 0);
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spin_unlock_irqrestore(&cm.lock, flags);
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@ -1615,8 +1544,7 @@ static struct cm_id_private * cm_match_req(struct cm_work *work,
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/* Find matching listen request. */
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listen_cm_id_priv = cm_find_listen(cm_id_priv->id.device,
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req_msg->service_id,
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req_msg->private_data);
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req_msg->service_id);
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if (!listen_cm_id_priv) {
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cm_cleanup_timewait(cm_id_priv->timewait_info);
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spin_unlock_irq(&cm.lock);
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@ -3164,8 +3092,7 @@ static int cm_sidr_req_handler(struct cm_work *work)
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}
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cm_id_priv->id.state = IB_CM_SIDR_REQ_RCVD;
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cur_cm_id_priv = cm_find_listen(cm_id->device,
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sidr_req_msg->service_id,
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sidr_req_msg->private_data);
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sidr_req_msg->service_id);
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if (!cur_cm_id_priv) {
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spin_unlock_irq(&cm.lock);
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cm_reject_sidr_req(cm_id_priv, IB_SIDR_UNSUPPORTED);
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@ -658,8 +658,7 @@ static ssize_t ib_ucm_listen(struct ib_ucm_file *file,
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if (result)
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goto out;
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result = ib_cm_listen(ctx->cm_id, cmd.service_id, cmd.service_mask,
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NULL);
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result = ib_cm_listen(ctx->cm_id, cmd.service_id, cmd.service_mask);
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out:
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ib_ucm_ctx_put(ctx);
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return result;
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@ -848,7 +848,7 @@ int ipoib_cm_dev_open(struct net_device *dev)
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}
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ret = ib_cm_listen(priv->cm.id, cpu_to_be64(IPOIB_CM_IETF_ID | priv->qp->qp_num),
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0, NULL);
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0);
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if (ret) {
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printk(KERN_WARNING "%s: failed to listen on ID 0x%llx\n", priv->ca->name,
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IPOIB_CM_IETF_ID | priv->qp->qp_num);
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@ -3250,7 +3250,7 @@ static void srpt_add_one(struct ib_device *device)
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* in the system as service_id; therefore, the target_id will change
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* if this HCA is gone bad and replaced by different HCA
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*/
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if (ib_cm_listen(sdev->cm_id, cpu_to_be64(srpt_service_guid), 0, NULL))
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if (ib_cm_listen(sdev->cm_id, cpu_to_be64(srpt_service_guid), 0))
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goto err_cm;
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INIT_IB_EVENT_HANDLER(&sdev->event_handler, sdev->device,
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@ -105,8 +105,6 @@ enum ib_cm_data_size {
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IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216,
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IB_CM_SIDR_REP_PRIVATE_DATA_SIZE = 136,
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IB_CM_SIDR_REP_INFO_LENGTH = 72,
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/* compare done u32 at a time */
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IB_CM_COMPARE_SIZE = (64 / sizeof(u32))
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};
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struct ib_cm_id;
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@ -344,11 +342,6 @@ void ib_destroy_cm_id(struct ib_cm_id *cm_id);
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#define IB_SDP_SERVICE_ID cpu_to_be64(0x0000000000010000ULL)
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#define IB_SDP_SERVICE_ID_MASK cpu_to_be64(0xFFFFFFFFFFFF0000ULL)
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struct ib_cm_compare_data {
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u32 data[IB_CM_COMPARE_SIZE];
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u32 mask[IB_CM_COMPARE_SIZE];
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};
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/**
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* ib_cm_listen - Initiates listening on the specified service ID for
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* connection and service ID resolution requests.
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@ -361,12 +354,9 @@ struct ib_cm_compare_data {
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* range of service IDs. If set to 0, the service ID is matched
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* exactly. This parameter is ignored if %service_id is set to
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* IB_CM_ASSIGN_SERVICE_ID.
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* @compare_data: This parameter is optional. It specifies data that must
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* appear in the private data of a connection request for the specified
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* listen request.
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*/
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int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id, __be64 service_mask,
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struct ib_cm_compare_data *compare_data);
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int ib_cm_listen(struct ib_cm_id *cm_id, __be64 service_id,
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__be64 service_mask);
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struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device,
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ib_cm_handler cm_handler,
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