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path: root/drivers/infiniband
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-rw-r--r--drivers/infiniband/hw/mthca/mthca_qp.c158
1 files changed, 98 insertions, 60 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index 72fabb822f1..a20e2f0c9a5 100644
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -295,7 +295,7 @@ static int to_mthca_st(int transport)
}
}
-static void store_attrs(struct mthca_sqp *sqp, struct ib_qp_attr *attr,
+static void store_attrs(struct mthca_sqp *sqp, const struct ib_qp_attr *attr,
int attr_mask)
{
if (attr_mask & IB_QP_PKEY_INDEX)
@@ -327,7 +327,7 @@ static void init_port(struct mthca_dev *dev, int port)
mthca_warn(dev, "INIT_IB returned status %02x.\n", status);
}
-static __be32 get_hw_access_flags(struct mthca_qp *qp, struct ib_qp_attr *attr,
+static __be32 get_hw_access_flags(struct mthca_qp *qp, const struct ib_qp_attr *attr,
int attr_mask)
{
u8 dest_rd_atomic;
@@ -510,7 +510,7 @@ out:
return err;
}
-static int mthca_path_set(struct mthca_dev *dev, struct ib_ah_attr *ah,
+static int mthca_path_set(struct mthca_dev *dev, const struct ib_ah_attr *ah,
struct mthca_qp_path *path, u8 port)
{
path->g_mylmc = ah->src_path_bits & 0x7f;
@@ -538,12 +538,12 @@ static int mthca_path_set(struct mthca_dev *dev, struct ib_ah_attr *ah,
return 0;
}
-int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
- struct ib_udata *udata)
+static int __mthca_modify_qp(struct ib_qp *ibqp,
+ const struct ib_qp_attr *attr, int attr_mask,
+ enum ib_qp_state cur_state, enum ib_qp_state new_state)
{
struct mthca_dev *dev = to_mdev(ibqp->device);
struct mthca_qp *qp = to_mqp(ibqp);
- enum ib_qp_state cur_state, new_state;
struct mthca_mailbox *mailbox;
struct mthca_qp_param *qp_param;
struct mthca_qp_context *qp_context;
@@ -551,60 +551,6 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
u8 status;
int err = -EINVAL;
- mutex_lock(&qp->mutex);
-
- if (attr_mask & IB_QP_CUR_STATE) {
- cur_state = attr->cur_qp_state;
- } else {
- spin_lock_irq(&qp->sq.lock);
- spin_lock(&qp->rq.lock);
- cur_state = qp->state;
- spin_unlock(&qp->rq.lock);
- spin_unlock_irq(&qp->sq.lock);
- }
-
- new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
-
- if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, attr_mask)) {
- mthca_dbg(dev, "Bad QP transition (transport %d) "
- "%d->%d with attr 0x%08x\n",
- qp->transport, cur_state, new_state,
- attr_mask);
- goto out;
- }
-
- if (cur_state == new_state && cur_state == IB_QPS_RESET) {
- err = 0;
- goto out;
- }
-
- if ((attr_mask & IB_QP_PKEY_INDEX) &&
- attr->pkey_index >= dev->limits.pkey_table_len) {
- mthca_dbg(dev, "P_Key index (%u) too large. max is %d\n",
- attr->pkey_index, dev->limits.pkey_table_len-1);
- goto out;
- }
-
- if ((attr_mask & IB_QP_PORT) &&
- (attr->port_num == 0 || attr->port_num > dev->limits.num_ports)) {
- mthca_dbg(dev, "Port number (%u) is invalid\n", attr->port_num);
- goto out;
- }
-
- if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
- attr->max_rd_atomic > dev->limits.max_qp_init_rdma) {
- mthca_dbg(dev, "Max rdma_atomic as initiator %u too large (max is %d)\n",
- attr->max_rd_atomic, dev->limits.max_qp_init_rdma);
- goto out;
- }
-
- if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
- attr->max_dest_rd_atomic > 1 << dev->qp_table.rdb_shift) {
- mthca_dbg(dev, "Max rdma_atomic as responder %u too large (max %d)\n",
- attr->max_dest_rd_atomic, 1 << dev->qp_table.rdb_shift);
- goto out;
- }
-
mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
if (IS_ERR(mailbox)) {
err = PTR_ERR(mailbox);
@@ -891,6 +837,98 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
out_mailbox:
mthca_free_mailbox(dev, mailbox);
+out:
+ return err;
+}
+
+static const struct ib_qp_attr dummy_init_attr = { .port_num = 1 };
+static const int dummy_init_attr_mask[] = {
+ [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_QKEY),
+ [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_ACCESS_FLAGS),
+ [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
+ IB_QP_PORT |
+ IB_QP_ACCESS_FLAGS),
+ [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+ [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
+ IB_QP_QKEY),
+};
+
+int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
+ struct ib_udata *udata)
+{
+ struct mthca_dev *dev = to_mdev(ibqp->device);
+ struct mthca_qp *qp = to_mqp(ibqp);
+ enum ib_qp_state cur_state, new_state;
+ int err = -EINVAL;
+
+ mutex_lock(&qp->mutex);
+ if (attr_mask & IB_QP_CUR_STATE) {
+ cur_state = attr->cur_qp_state;
+ } else {
+ spin_lock_irq(&qp->sq.lock);
+ spin_lock(&qp->rq.lock);
+ cur_state = qp->state;
+ spin_unlock(&qp->rq.lock);
+ spin_unlock_irq(&qp->sq.lock);
+ }
+
+ new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
+
+ if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, attr_mask)) {
+ mthca_dbg(dev, "Bad QP transition (transport %d) "
+ "%d->%d with attr 0x%08x\n",
+ qp->transport, cur_state, new_state,
+ attr_mask);
+ goto out;
+ }
+
+ if ((attr_mask & IB_QP_PKEY_INDEX) &&
+ attr->pkey_index >= dev->limits.pkey_table_len) {
+ mthca_dbg(dev, "P_Key index (%u) too large. max is %d\n",
+ attr->pkey_index, dev->limits.pkey_table_len-1);
+ goto out;
+ }
+
+ if ((attr_mask & IB_QP_PORT) &&
+ (attr->port_num == 0 || attr->port_num > dev->limits.num_ports)) {
+ mthca_dbg(dev, "Port number (%u) is invalid\n", attr->port_num);
+ goto out;
+ }
+
+ if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
+ attr->max_rd_atomic > dev->limits.max_qp_init_rdma) {
+ mthca_dbg(dev, "Max rdma_atomic as initiator %u too large (max is %d)\n",
+ attr->max_rd_atomic, dev->limits.max_qp_init_rdma);
+ goto out;
+ }
+
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
+ attr->max_dest_rd_atomic > 1 << dev->qp_table.rdb_shift) {
+ mthca_dbg(dev, "Max rdma_atomic as responder %u too large (max %d)\n",
+ attr->max_dest_rd_atomic, 1 << dev->qp_table.rdb_shift);
+ goto out;
+ }
+
+ if (cur_state == new_state && cur_state == IB_QPS_RESET) {
+ err = 0;
+ goto out;
+ }
+
+ if (cur_state == IB_QPS_RESET && new_state == IB_QPS_ERR) {
+ err = __mthca_modify_qp(ibqp, &dummy_init_attr,
+ dummy_init_attr_mask[ibqp->qp_type],
+ IB_QPS_RESET, IB_QPS_INIT);
+ if (err)
+ goto out;
+ cur_state = IB_QPS_INIT;
+ }
+
+ err = __mthca_modify_qp(ibqp, attr, attr_mask, cur_state, new_state);
out:
mutex_unlock(&qp->mutex);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 16:51:59 +0000