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rds: ib: update WR sizes when bringing up connection

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Currently WR sizes are updated from rds_ib_sysctl_max_send_wr and
rds_ib_sysctl_max_recv_wr when a connection is shut down. As a result,
a connection being down while rds_ib_sysctl_max_send_wr or
rds_ib_sysctl_max_recv_wr are updated, will not update the sizes when
it comes back up.

Move resizing of WRs to rds_ib_setup_qp so that connections will be setup
with the most current WR sizes.

Signed-off-by: Dag Moxnes <dag.moxnes@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dag Moxnes 2019-11-15 09:56:01 +01:00 committed by David S. Miller
parent 18d647ae74
commit a36e629ee7
1 changed files with 15 additions and 8 deletions
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23
net/rds/ib_cm.c
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@ -450,6 +450,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
struct ib_qp_init_attr attr;
struct ib_cq_init_attr cq_attr = {};
struct rds_ib_device *rds_ibdev;
unsigned long max_wrs;
int ret, fr_queue_space;
/*
@ -469,10 +470,15 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
/* add the conn now so that connection establishment has the dev */
rds_ib_add_conn(rds_ibdev, conn);
if (rds_ibdev->max_wrs < ic->i_send_ring.w_nr + 1)
rds_ib_ring_resize(&ic->i_send_ring, rds_ibdev->max_wrs - 1);
if (rds_ibdev->max_wrs < ic->i_recv_ring.w_nr + 1)
rds_ib_ring_resize(&ic->i_recv_ring, rds_ibdev->max_wrs - 1);
max_wrs = rds_ibdev->max_wrs < rds_ib_sysctl_max_send_wr + 1 ?
rds_ibdev->max_wrs - 1 : rds_ib_sysctl_max_send_wr;
if (ic->i_send_ring.w_nr != max_wrs)
rds_ib_ring_resize(&ic->i_send_ring, max_wrs);
max_wrs = rds_ibdev->max_wrs < rds_ib_sysctl_max_recv_wr + 1 ?
rds_ibdev->max_wrs - 1 : rds_ib_sysctl_max_recv_wr;
if (ic->i_recv_ring.w_nr != max_wrs)
rds_ib_ring_resize(&ic->i_recv_ring, max_wrs);
/* Protection domain and memory range */
ic->i_pd = rds_ibdev->pd;
@ -1099,8 +1105,9 @@ void rds_ib_conn_path_shutdown(struct rds_conn_path *cp)
ic->i_flowctl = 0;
atomic_set(&ic->i_credits, 0);
rds_ib_ring_init(&ic->i_send_ring, rds_ib_sysctl_max_send_wr);
rds_ib_ring_init(&ic->i_recv_ring, rds_ib_sysctl_max_recv_wr);
/* Re-init rings, but retain sizes. */
rds_ib_ring_init(&ic->i_send_ring, ic->i_send_ring.w_nr);
rds_ib_ring_init(&ic->i_recv_ring, ic->i_recv_ring.w_nr);
if (ic->i_ibinc) {
rds_inc_put(&ic->i_ibinc->ii_inc);
@ -1147,8 +1154,8 @@ int rds_ib_conn_alloc(struct rds_connection *conn, gfp_t gfp)
* rds_ib_conn_shutdown() waits for these to be emptied so they
* must be initialized before it can be called.
*/
rds_ib_ring_init(&ic->i_send_ring, rds_ib_sysctl_max_send_wr);
rds_ib_ring_init(&ic->i_recv_ring, rds_ib_sysctl_max_recv_wr);
rds_ib_ring_init(&ic->i_send_ring, 0);
rds_ib_ring_init(&ic->i_recv_ring, 0);
ic->conn = conn;
conn->c_transport_data = ic;