[v4,3/3] RDMA/rxe: Add RDMA Atomic Write attribute for rxe device

Commit Message

Xiao Yang April 18, 2022, 6:12 a.m. UTC

The attribute shows that rxe device supports RDMA Atomic Write operation.

Signed-off-by: Xiao Yang <[e-mail]>
---
 drivers/infiniband/sw/rxe/rxe_param.h | 5 +++++
 include/rdma/ib_verbs.h               | 1 +
 include/uapi/rdma/ib_user_verbs.h     | 2 ++
 3 files changed, 8 insertions(+)

Patch

diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h
index 568a7cbd13d4..05796f4007cb 100644
--- a/drivers/infiniband/sw/rxe/rxe_param.h
+++ b/drivers/infiniband/sw/rxe/rxe_param.h
@@ -51,7 +51,12 @@  enum rxe_device_param {
 					| IB_DEVICE_SRQ_RESIZE
 					| IB_DEVICE_MEM_MGT_EXTENSIONS
 					| IB_DEVICE_MEM_WINDOW
+#ifdef CONFIG_64BIT
+					| IB_DEVICE_MEM_WINDOW_TYPE_2B
+					| IB_DEVICE_ATOMIC_WRITE,
+#else
 					| IB_DEVICE_MEM_WINDOW_TYPE_2B,
+#endif /* CONFIG_64BIT */
 	RXE_MAX_SGE			= 32,
 	RXE_MAX_WQE_SIZE		= sizeof(struct rxe_send_wqe) +
 					  sizeof(struct ib_sge) * RXE_MAX_SGE,
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 18d706892e97..f5f81e5d1179 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -270,6 +270,7 @@  enum ib_device_cap_flags {
 	/* The device supports padding incoming writes to cacheline. */
 	IB_DEVICE_PCI_WRITE_END_PADDING =
 		IB_UVERBS_DEVICE_PCI_WRITE_END_PADDING,
+	IB_DEVICE_ATOMIC_WRITE = IB_UVERBS_DEVICE_ATOMIC_WRITE,
 };
 
 enum ib_kernel_cap_flags {
diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h
index 175ade79e358..4a7dbabf1792 100644
--- a/include/uapi/rdma/ib_user_verbs.h
+++ b/include/uapi/rdma/ib_user_verbs.h
@@ -1333,6 +1333,8 @@  enum ib_uverbs_device_cap_flags {
 	/* Deprecated. Please use IB_UVERBS_RAW_PACKET_CAP_SCATTER_FCS. */
 	IB_UVERBS_DEVICE_RAW_SCATTER_FCS = 1ULL << 34,
 	IB_UVERBS_DEVICE_PCI_WRITE_END_PADDING = 1ULL << 36,
+	/* Atomic write attributes */
+	IB_UVERBS_DEVICE_ATOMIC_WRITE = 1ULL << 40,
 };
 
 enum ib_uverbs_raw_packet_caps {