[PATCH v7 2/8] RDMA: Extend RDMA kernel ABI to support atomic write

[Xiao Yang <yangx.jy@fujitsu.com>]

1) Define new atomic write request/completion in kernel.
2) Define new atomic write capability in kernel.
3) Define new atomic write opcode for RC service in packet.

Signed-off-by: Xiao Yang <yangx.jy@fujitsu.com>
---
 include/rdma/ib_pack.h  | 2 ++
 include/rdma/ib_verbs.h | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/include/rdma/ib_pack.h b/include/rdma/ib_pack.h
index a9162f25beaf..f932d164af63 100644
--- a/include/rdma/ib_pack.h
+++ b/include/rdma/ib_pack.h
@@ -84,6 +84,7 @@ enum {
 	/* opcode 0x15 is reserved */
 	IB_OPCODE_SEND_LAST_WITH_INVALIDATE         = 0x16,
 	IB_OPCODE_SEND_ONLY_WITH_INVALIDATE         = 0x17,
+	IB_OPCODE_ATOMIC_WRITE                      = 0x1D,
 
 	/* real constants follow -- see comment about above IB_OPCODE()
 	   macro for more details */
@@ -112,6 +113,7 @@ enum {
 	IB_OPCODE(RC, FETCH_ADD),
 	IB_OPCODE(RC, SEND_LAST_WITH_INVALIDATE),
 	IB_OPCODE(RC, SEND_ONLY_WITH_INVALIDATE),
+	IB_OPCODE(RC, ATOMIC_WRITE),
 
 	/* UC */
 	IB_OPCODE(UC, SEND_FIRST),
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 77dd9148815b..df6bb26ba0be 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 {
@@ -982,6 +983,7 @@ enum ib_wc_opcode {
 	IB_WC_BIND_MW = IB_UVERBS_WC_BIND_MW,
 	IB_WC_LOCAL_INV = IB_UVERBS_WC_LOCAL_INV,
 	IB_WC_LSO = IB_UVERBS_WC_TSO,
+	IB_WC_ATOMIC_WRITE = IB_UVERBS_WC_ATOMIC_WRITE,
 	IB_WC_REG_MR,
 	IB_WC_MASKED_COMP_SWAP,
 	IB_WC_MASKED_FETCH_ADD,
@@ -1325,6 +1327,7 @@ enum ib_wr_opcode {
 		IB_UVERBS_WR_MASKED_ATOMIC_CMP_AND_SWP,
 	IB_WR_MASKED_ATOMIC_FETCH_AND_ADD =
 		IB_UVERBS_WR_MASKED_ATOMIC_FETCH_AND_ADD,
+	IB_WR_ATOMIC_WRITE = IB_UVERBS_WR_ATOMIC_WRITE,
 
 	/* These are kernel only and can not be issued by userspace */
 	IB_WR_REG_MR = 0x20,
-- 
2.34.1