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authorAndy Grover <andy.grover@oracle.com>2009-07-17 13:13:29 +0000
committerDavid S. Miller <davem@davemloft.net>2009-07-20 08:03:08 -0700
commite11d912a7dd4dfe388f38ba3080a6d067a57b23d (patch)
tree0309ef7caba1742cb091be47930ee330a5392d38 /net/rds/ib_cm.c
parent9099707ded4b3aeda7b1a6c1c87076bd18578d24 (diff)
downloadop-kernel-dev-e11d912a7dd4dfe388f38ba3080a6d067a57b23d.zip
op-kernel-dev-e11d912a7dd4dfe388f38ba3080a6d067a57b23d.tar.gz
RDS/IB: Move tx/rx ring init and refill to later
Since RDS 3.0 and 3.1 have different packet formats, we need to wait until after protocol negotiation is complete to layout the rx buffers. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/ib_cm.c')
-rw-r--r--net/rds/ib_cm.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index f621086..0ad749c 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -116,6 +116,16 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_even
RDS_PROTOCOL_MINOR(conn->c_version),
ic->i_flowctl ? ", flow control" : "");
+ /*
+ * Init rings and fill recv. this needs to wait until protocol negotiation
+ * is complete, since ring layout is different from 3.0 to 3.1.
+ */
+ rds_ib_send_init_ring(ic);
+ rds_ib_recv_init_ring(ic);
+ /* Post receive buffers - as a side effect, this will update
+ * the posted credit count. */
+ rds_ib_recv_refill(conn, GFP_KERNEL, GFP_HIGHUSER, 1);
+
/* Tune RNR behavior */
rds_ib_tune_rnr(ic, &qp_attr);
@@ -324,7 +334,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
rdsdebug("send allocation failed\n");
goto out;
}
- rds_ib_send_init_ring(ic);
+ memset(ic->i_sends, 0, ic->i_send_ring.w_nr * sizeof(struct rds_ib_send_work));
ic->i_recvs = vmalloc(ic->i_recv_ring.w_nr * sizeof(struct rds_ib_recv_work));
if (ic->i_recvs == NULL) {
@@ -332,14 +342,10 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
rdsdebug("recv allocation failed\n");
goto out;
}
+ memset(ic->i_recvs, 0, ic->i_recv_ring.w_nr * sizeof(struct rds_ib_recv_work));
- rds_ib_recv_init_ring(ic);
rds_ib_recv_init_ack(ic);
- /* Post receive buffers - as a side effect, this will update
- * the posted credit count. */
- rds_ib_recv_refill(conn, GFP_KERNEL, GFP_HIGHUSER, 1);
-
rdsdebug("conn %p pd %p mr %p cq %p %p\n", conn, ic->i_pd, ic->i_mr,
ic->i_send_cq, ic->i_recv_cq);
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