[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20231207192907.10113-8-rpearsonhpe@gmail.com>
Date: Thu, 7 Dec 2023 13:29:08 -0600
From: Bob Pearson <rpearsonhpe@...il.com>
To: jgg@...dia.com,
yanjun.zhu@...ux.dev,
linux-rdma@...r.kernel.org,
netdev@...r.kernel.org,
dsahern@...nel.org,
rain.1986.08.12@...il.com
Cc: Bob Pearson <rpearsonhpe@...il.com>
Subject: [PATCH for-next v6 7/7] RDMA/rxe: Add module parameters for mcast limits
Add module parameters for max_mcast_grp, max_mcast_qp_attach,
and tot_mcast_qp_attach to allow setting these parameters to
small values when the driver is loaded to support testing these
limits.
Signed-off-by: Bob Pearson <rpearsonhpe@...il.com>
---
drivers/infiniband/sw/rxe/Makefile | 3 ++-
drivers/infiniband/sw/rxe/rxe.c | 6 +++---
drivers/infiniband/sw/rxe/rxe_param.c | 23 +++++++++++++++++++++++
drivers/infiniband/sw/rxe/rxe_param.h | 4 ++++
4 files changed, 32 insertions(+), 4 deletions(-)
create mode 100644 drivers/infiniband/sw/rxe/rxe_param.c
diff --git a/drivers/infiniband/sw/rxe/Makefile b/drivers/infiniband/sw/rxe/Makefile
index 5395a581f4bb..b183924ea01d 100644
--- a/drivers/infiniband/sw/rxe/Makefile
+++ b/drivers/infiniband/sw/rxe/Makefile
@@ -22,4 +22,5 @@ rdma_rxe-y := \
rxe_mcast.o \
rxe_task.o \
rxe_net.o \
- rxe_hw_counters.o
+ rxe_hw_counters.o \
+ rxe_param.o
diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c
index 147cb16e937d..599fbfdeb426 100644
--- a/drivers/infiniband/sw/rxe/rxe.c
+++ b/drivers/infiniband/sw/rxe/rxe.c
@@ -59,9 +59,9 @@ static void rxe_init_device_param(struct rxe_dev *rxe)
rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM;
rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM;
rxe->attr.atomic_cap = IB_ATOMIC_HCA;
- rxe->attr.max_mcast_grp = RXE_MAX_MCAST_GRP;
- rxe->attr.max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH;
- rxe->attr.max_total_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH;
+ rxe->attr.max_mcast_grp = rxe_max_mcast_grp;
+ rxe->attr.max_mcast_qp_attach = rxe_max_mcast_qp_attach;
+ rxe->attr.max_total_mcast_qp_attach = rxe_max_tot_mcast_qp_attach;
rxe->attr.max_ah = RXE_MAX_AH;
rxe->attr.max_srq = RXE_MAX_SRQ;
rxe->attr.max_srq_wr = RXE_MAX_SRQ_WR;
diff --git a/drivers/infiniband/sw/rxe/rxe_param.c b/drivers/infiniband/sw/rxe/rxe_param.c
new file mode 100644
index 000000000000..27873e7de753
--- /dev/null
+++ b/drivers/infiniband/sw/rxe/rxe_param.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+/*
+ * Copyright (c) 2023 Hewlett Packard Enterprise, Inc. All rights reserved.
+ */
+
+#include "rxe.h"
+
+int rxe_max_mcast_grp = RXE_MAX_MCAST_GRP;
+module_param_named(max_mcast_grp, rxe_max_mcast_grp, int, 0444);
+MODULE_PARM_DESC(max_mcast_grp,
+ "Maximum number of multicast groups per device");
+
+int rxe_max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH;
+module_param_named(max_mcast_qp_attach, rxe_max_mcast_qp_attach,
+ int, 0444);
+MODULE_PARM_DESC(max_mcast_qp_attach,
+ "Maximum number of QPs attached to a multicast group");
+
+int rxe_max_tot_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH;
+module_param_named(max_tot_mcast_qp_attach, rxe_max_tot_mcast_qp_attach,
+ int, 0444);
+MODULE_PARM_DESC(max_tot_mcast_qp_attach,
+ "Maximum total number of QPs attached to multicast groups per device");
diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h
index d2f57ead78ad..d6fe50f5f483 100644
--- a/drivers/infiniband/sw/rxe/rxe_param.h
+++ b/drivers/infiniband/sw/rxe/rxe_param.h
@@ -125,6 +125,10 @@ enum rxe_device_param {
RXE_VENDOR_ID = 0XFFFFFF,
};
+extern int rxe_max_mcast_grp;
+extern int rxe_max_mcast_qp_attach;
+extern int rxe_max_tot_mcast_qp_attach;
+
/* default/initial rxe port parameters */
enum rxe_port_param {
RXE_PORT_GID_TBL_LEN = 1024,
--
2.40.1
Powered by blists - more mailing lists