diff mbox series

[v3,1/2] Introduce maximum WQE size to check limits

Message ID 1578962480-17814-2-git-send-email-rao.shoaib@oracle.com (mailing list archive)
State Accepted
Delegated to: Jason Gunthorpe
Headers show
Series rxe should use same buffer size for SGE's and inline data | expand

Commit Message

Shoaib Rao Jan. 14, 2020, 12:41 a.m. UTC 
From: Rao Shoaib <rao.shoaib@oracle.com>

Introduce maximum WQE size to impose limits on max SGE's and inline data

Signed-off-by: Rao Shoaib <rao.shoaib@oracle.com>
---
 drivers/infiniband/sw/rxe/rxe_param.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h
index 1b596fb..a0e4075 100644
--- a/drivers/infiniband/sw/rxe/rxe_param.h
+++ b/drivers/infiniband/sw/rxe/rxe_param.h
@@ -34,6 +34,8 @@ 
 #ifndef RXE_PARAM_H
 #define RXE_PARAM_H
 
+#include <uapi/rdma/rdma_user_rxe.h>
+
 static inline enum ib_mtu rxe_mtu_int_to_enum(int mtu)
 {
 	if (mtu < 256)
@@ -68,7 +70,6 @@  enum rxe_device_param {
 	RXE_HW_VER			= 0,
 	RXE_MAX_QP			= 0x10000,
 	RXE_MAX_QP_WR			= 0x4000,
-	RXE_MAX_INLINE_DATA		= 400,
 	RXE_DEVICE_CAP_FLAGS		= IB_DEVICE_BAD_PKEY_CNTR
 					| IB_DEVICE_BAD_QKEY_CNTR
 					| IB_DEVICE_AUTO_PATH_MIG
@@ -80,6 +81,10 @@  enum rxe_device_param {
 					| IB_DEVICE_SRQ_RESIZE
 					| IB_DEVICE_MEM_MGT_EXTENSIONS,
 	RXE_MAX_SGE			= 32,
+	RXE_MAX_WQE_SIZE		= sizeof(struct rxe_send_wqe) +
+					  sizeof(struct ib_sge) * RXE_MAX_SGE,
+	RXE_MAX_INLINE_DATA		= RXE_MAX_WQE_SIZE -
+					  sizeof(struct rxe_send_wqe),
 	RXE_MAX_SGE_RD			= 32,
 	RXE_MAX_CQ			= 16384,
 	RXE_MAX_LOG_CQE			= 15,