From: rao Shoaib <rao.shoaib@oracle.com>
To: linux-rdma@vger.kernel.org
Cc: jgg@ziepe.ca, monis@mellanox.com, dledford@redhat.com,
sean.hefty@intel.com, hal.rosenstock@gmail.com,
linux-kernel@vger.kernel.org, Rao Shoaib <rao.shoaib@oracle.com>
Subject: [PATCH v4 1/2] RDMA/rxe: use RXE_MAX_WQE_SIZE to enforce limits
Date: Thu, 16 Jan 2020 10:30:11 -0800 [thread overview]
Message-ID: <1579199412-15741-2-git-send-email-rao.shoaib@oracle.com> (raw)
In-Reply-To: <1579199412-15741-1-git-send-email-rao.shoaib@oracle.com>
From: Rao Shoaib <rao.shoaib@oracle.com>
Introduce RXE_MAX_WQE_SIZE to impose limits on max SGE's and inline data
size
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 --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h
index 353c666..f59616b 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)
@@ -64,7 +66,6 @@ enum rxe_device_param {
RXE_PAGE_SIZE_CAP = 0xfffff000,
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
@@ -77,6 +78,10 @@ enum rxe_device_param {
| IB_DEVICE_MEM_MGT_EXTENSIONS
| IB_DEVICE_ALLOW_USER_UNREG,
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,
--
1.8.3.1
next prev parent reply other threads:[~2020-01-16 18:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-16 18:30 [PATCH v4 0/2] RDMA/rxe: rxe should use same buffer size for SGE's and inline data rao Shoaib
2020-01-16 18:30 ` rao Shoaib [this message]
2020-01-16 18:30 ` [PATCH v4 2/2] RDMA/rxe: SGE buffer and max_inline data must have same size rao Shoaib
2020-01-16 19:20 ` [PATCH v4 0/2] RDMA/rxe: rxe should use same buffer size for SGE's and inline data Jason Gunthorpe
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