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authorAndy Grover <andy.grover@oracle.com>2010-01-12 10:50:48 -0800
committerAndy Grover <andy.grover@oracle.com>2010-09-08 18:11:42 -0700
commit40589e74f7ba855f3a887c9d4abe9d100c5b039c (patch)
treef32b0414ae3cfe8868fbdb130f9b24ac19794ae3
parent15133f6e67d8d646d0744336b4daa3135452cb0d (diff)
RDS: Base init_depth and responder_resources on hw values
Instead of using a constant for initiator_depth and responder_resources, read the per-QP values when the device is enumerated, and then use these values when creating the connection. Signed-off-by: Andy Grover <andy.grover@oracle.com>
-rw-r--r--net/rds/ib.c3
-rw-r--r--net/rds/ib.h2
-rw-r--r--net/rds/ib_cm.c27
-rw-r--r--net/rds/rdma.c3
4 files changed, 24 insertions, 11 deletions
diff --git a/net/rds/ib.c b/net/rds/ib.c
index f0d29656baf..72a5116c11d 100644
--- a/net/rds/ib.c
+++ b/net/rds/ib.c
@@ -91,6 +91,9 @@ void rds_ib_add_one(struct ib_device *device)
min_t(unsigned int, dev_attr->max_fmr, fmr_pool_size) :
fmr_pool_size;
+ rds_ibdev->max_initiator_depth = dev_attr->max_qp_init_rd_atom;
+ rds_ibdev->max_responder_resources = dev_attr->max_qp_rd_atom;
+
rds_ibdev->dev = device;
rds_ibdev->pd = ib_alloc_pd(device);
if (IS_ERR(rds_ibdev->pd))
diff --git a/net/rds/ib.h b/net/rds/ib.h
index d2fd0aa4fde..a303f13111c 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -164,6 +164,8 @@ struct rds_ib_device {
unsigned int max_fmrs;
int max_sge;
unsigned int max_wrs;
+ unsigned int max_initiator_depth;
+ unsigned int max_responder_resources;
spinlock_t spinlock; /* protect the above */
};
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index b46bc2f22ab..3134336ca17 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -153,18 +153,25 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_even
static void rds_ib_cm_fill_conn_param(struct rds_connection *conn,
struct rdma_conn_param *conn_param,
struct rds_ib_connect_private *dp,
- u32 protocol_version)
+ u32 protocol_version,
+ u32 max_responder_resources,
+ u32 max_initiator_depth)
{
+ struct rds_ib_connection *ic = conn->c_transport_data;
+ struct rds_ib_device *rds_ibdev;
+
memset(conn_param, 0, sizeof(struct rdma_conn_param));
- /* XXX tune these? */
- conn_param->responder_resources = 1;
- conn_param->initiator_depth = 1;
+
+ rds_ibdev = ib_get_client_data(ic->i_cm_id->device, &rds_ib_client);
+
+ conn_param->responder_resources =
+ min_t(u32, rds_ibdev->max_responder_resources, max_responder_resources);
+ conn_param->initiator_depth =
+ min_t(u32, rds_ibdev->max_initiator_depth, max_initiator_depth);
conn_param->retry_count = min_t(unsigned int, rds_ib_retry_count, 7);
conn_param->rnr_retry_count = 7;
if (dp) {
- struct rds_ib_connection *ic = conn->c_transport_data;
-
memset(dp, 0, sizeof(*dp));
dp->dp_saddr = conn->c_laddr;
dp->dp_daddr = conn->c_faddr;
@@ -479,7 +486,9 @@ int rds_ib_cm_handle_connect(struct rdma_cm_id *cm_id,
goto out;
}
- rds_ib_cm_fill_conn_param(conn, &conn_param, &dp_rep, version);
+ rds_ib_cm_fill_conn_param(conn, &conn_param, &dp_rep, version,
+ event->param.conn.responder_resources,
+ event->param.conn.initiator_depth);
/* rdma_accept() calls rdma_reject() internally if it fails */
err = rdma_accept(cm_id, &conn_param);
@@ -516,8 +525,8 @@ int rds_ib_cm_initiate_connect(struct rdma_cm_id *cm_id)
goto out;
}
- rds_ib_cm_fill_conn_param(conn, &conn_param, &dp, RDS_PROTOCOL_VERSION);
-
+ rds_ib_cm_fill_conn_param(conn, &conn_param, &dp, RDS_PROTOCOL_VERSION,
+ UINT_MAX, UINT_MAX);
ret = rdma_connect(cm_id, &conn_param);
if (ret)
rds_ib_conn_error(conn, "rdma_connect failed (%d)\n", ret);
diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index a7019df38c7..abbc2979e7e 100644
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -745,7 +745,6 @@ int rds_cmsg_atomic(struct rds_sock *rs, struct rds_message *rm,
rm->atomic.op_swap_add = args->fadd.add;
}
- rm->m_rdma_cookie = args->cookie;
rm->atomic.op_notify = !!(args->flags & RDS_RDMA_NOTIFY_ME);
rm->atomic.op_recverr = rs->rs_recverr;
rm->atomic.op_sg = rds_message_alloc_sgs(rm, 1);
@@ -779,7 +778,7 @@ int rds_cmsg_atomic(struct rds_sock *rs, struct rds_message *rm,
rm->atomic.op_notifier->n_status = RDS_RDMA_SUCCESS;
}
- rm->atomic.op_rkey = rds_rdma_cookie_key(rm->m_rdma_cookie);
+ rm->atomic.op_rkey = rds_rdma_cookie_key(args->cookie);
rm->atomic.op_remote_addr = args->remote_addr + rds_rdma_cookie_offset(args->cookie);
rm->atomic.op_active = 1;