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Subject[PATCH 10/12] IB/ehca: Path migration support
Date
Rectify some modify_qp() issues related to path migration.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
---
drivers/infiniband/hw/ehca/ehca_irq.c | 4 +-
drivers/infiniband/hw/ehca/ehca_qp.c | 90 ++++++++++++++++++++++++---------
2 files changed, 68 insertions(+), 26 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index a925ea5..7093986 100644
--- a/drivers/infiniband/hw/ehca/ehca_irq.c
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -294,8 +294,8 @@ static void parse_identifier(struct ehca_shca *shca, u64 eqe)
case 0x11: /* unaffiliated access error */
ehca_err(&shca->ib_device, "Unaffiliated access error.");
break;
- case 0x12: /* path migrating error */
- ehca_err(&shca->ib_device, "Path migration error.");
+ case 0x12: /* path migrating */
+ ehca_err(&shca->ib_device, "Path migrating.");
break;
case 0x13: /* interface trace stopped */
ehca_err(&shca->ib_device, "Interface trace stopped.");
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index 7154f62..6c70dee 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -1167,6 +1167,13 @@ static int internal_modify_qp(struct ib_qp *ibqp,
}

if (attr_mask & IB_QP_PKEY_INDEX) {
+ if (attr->pkey_index >= 16) {
+ ret = -EINVAL;
+ ehca_err(ibqp->device, "Invalid pkey_index=%x. "
+ "ehca_qp=%p qp_num=%x max_pkey_index=f",
+ attr->pkey_index, my_qp, ibqp->qp_num);
+ goto modify_qp_exit2;
+ }
mqpcb->prim_p_key_idx = attr->pkey_index;
update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_P_KEY_IDX, 1);
}
@@ -1275,50 +1282,78 @@ static int internal_modify_qp(struct ib_qp *ibqp,
int ehca_mult = ib_rate_to_mult(
shca->sport[my_qp->init_attr.port_num].rate);

+ if (attr->alt_port_num < 1
+ || attr->alt_port_num > shca->num_ports) {
+ ret = -EINVAL;
+ ehca_err(ibqp->device, "Invalid alt_port=%x. "
+ "ehca_qp=%p qp_num=%x num_ports=%x",
+ attr->alt_port_num, my_qp, ibqp->qp_num,
+ shca->num_ports);
+ goto modify_qp_exit2;
+ }
+ mqpcb->alt_phys_port = attr->alt_port_num;
+
+ if (attr->alt_pkey_index >= 16) {
+ ret = -EINVAL;
+ ehca_err(ibqp->device, "Invalid alt_pkey_index=%x. "
+ "ehca_qp=%p qp_num=%x max_pkey_index=f",
+ attr->pkey_index, my_qp, ibqp->qp_num);
+ goto modify_qp_exit2;
+ }
+ mqpcb->alt_p_key_idx = attr->alt_pkey_index;
+
+ mqpcb->timeout_al = attr->alt_timeout;
mqpcb->dlid_al = attr->alt_ah_attr.dlid;
- update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID_AL, 1);
mqpcb->source_path_bits_al = attr->alt_ah_attr.src_path_bits;
- update_mask |=
- EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS_AL, 1);
mqpcb->service_level_al = attr->alt_ah_attr.sl;
- update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL_AL, 1);

- if (ah_mult < ehca_mult)
- mqpcb->max_static_rate = (ah_mult > 0) ?
- ((ehca_mult - 1) / ah_mult) : 0;
+ if (ah_mult > 0 && ah_mult < ehca_mult)
+ mqpcb->max_static_rate_al = (ehca_mult - 1) / ah_mult;
else
mqpcb->max_static_rate_al = 0;

- update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE_AL, 1);
+ /* OpenIB doesn't support alternate retry counts - copy them */
+ mqpcb->retry_count_al = mqpcb->retry_count;
+ mqpcb->rnr_retry_count_al = mqpcb->rnr_retry_count;
+
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_ALT_PHYS_PORT, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_ALT_P_KEY_IDX, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_TIMEOUT_AL, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_DLID_AL, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS_AL, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL_AL, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE_AL, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_RETRY_COUNT_AL, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_RNR_RETRY_COUNT_AL, 1);
+
+ /*
+ * Always supply the GRH flag, even if it's zero, to give the
+ * hypervisor a clear "yes" or "no" instead of a "perhaps"
+ */
+ update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG_AL, 1);

/*
* only if GRH is TRUE we might consider SOURCE_GID_IDX
* and DEST_GID otherwise phype will return H_ATTR_PARM!!!
*/
if (attr->alt_ah_attr.ah_flags == IB_AH_GRH) {
- mqpcb->send_grh_flag_al = 1 << 31;
- update_mask |=
- EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG_AL, 1);
- mqpcb->source_gid_idx_al =
- attr->alt_ah_attr.grh.sgid_index;
- update_mask |=
- EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX_AL, 1);
+ mqpcb->send_grh_flag_al = 1;

for (cnt = 0; cnt < 16; cnt++)
mqpcb->dest_gid_al.byte[cnt] =
attr->alt_ah_attr.grh.dgid.raw[cnt];
-
- update_mask |=
- EHCA_BMASK_SET(MQPCB_MASK_DEST_GID_AL, 1);
+ mqpcb->source_gid_idx_al =
+ attr->alt_ah_attr.grh.sgid_index;
mqpcb->flow_label_al = attr->alt_ah_attr.grh.flow_label;
- update_mask |=
- EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL_AL, 1);
mqpcb->hop_limit_al = attr->alt_ah_attr.grh.hop_limit;
- update_mask |=
- EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT_AL, 1);
mqpcb->traffic_class_al =
attr->alt_ah_attr.grh.traffic_class;
+
update_mask |=
+ EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX_AL, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_DEST_GID_AL, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL_AL, 1)
+ | EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT_AL, 1) |
EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS_AL, 1);
}
}
@@ -1340,7 +1375,14 @@ static int internal_modify_qp(struct ib_qp *ibqp,
}

if (attr_mask & IB_QP_PATH_MIG_STATE) {
- mqpcb->path_migration_state = attr->path_mig_state;
+ if (attr->path_mig_state != IB_MIG_REARM
+ && attr->path_mig_state != IB_MIG_MIGRATED) {
+ ret = -EINVAL;
+ ehca_err(ibqp->device, "Invalid mig_state=%x",
+ attr->path_mig_state);
+ goto modify_qp_exit2;
+ }
+ mqpcb->path_migration_state = attr->path_mig_state + 1;
update_mask |=
EHCA_BMASK_SET(MQPCB_MASK_PATH_MIGRATION_STATE, 1);
}
@@ -1508,7 +1550,7 @@ int ehca_query_qp(struct ib_qp *qp,

qp_attr->qkey = qpcb->qkey;
qp_attr->path_mtu = qpcb->path_mtu;
- qp_attr->path_mig_state = qpcb->path_migration_state;
+ qp_attr->path_mig_state = qpcb->path_migration_state - 1;
qp_attr->rq_psn = qpcb->receive_psn;
qp_attr->sq_psn = qpcb->send_psn;
qp_attr->min_rnr_timer = qpcb->min_rnr_nak_timer_field;
--
1.5.2

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