To bind:
Application should directly post bind WR to the
QP using ibv_post_send.
To unbind/invalidate there are 2 options, local and remote
invalidations.
Local invalidation:
Send a work request where the immediate data contains the
MW's R_key and the opcode is IBV_WR_LOCAL_INV.
Upon success a completion with opcode of IBV_WC_LOCAL_INV is polled.
Remote invalidation:
Send with invalidate can be used to invalidate a remote memory
key.
The invalidation is done by posting a send work request, where the
opcode is IBV_WR_SEND_WITH_INV and the immediate data
contains the R_key.
Upon success, the responder's work completion will contain the
invalidated R_key in its immediate data.
Signed-off-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
include/infiniband/verbs.h | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/include/infiniband/verbs.h b/include/infiniband/verbs.h
index 81cc3d9..b9102a6 100644
--- a/include/infiniband/verbs.h
+++ b/include/infiniband/verbs.h
@@ -344,6 +344,7 @@ enum ibv_wc_opcode {
IBV_WC_COMP_SWAP,
IBV_WC_FETCH_ADD,
IBV_WC_BIND_MW,
+ IBV_WC_LOCAL_INV,
/*
* Set value of IBV_WC_RECV so consumers can test if a completion is a
* receive by testing (opcode & IBV_WC_RECV).
@@ -359,7 +360,8 @@ enum {
enum ibv_wc_flags {
IBV_WC_GRH = 1 << 0,
IBV_WC_WITH_IMM = 1 << 1,
- IBV_WC_IP_CSUM_OK = 1 << IBV_WC_IP_CSUM_OK_SHIFT
+ IBV_WC_IP_CSUM_OK = 1 << IBV_WC_IP_CSUM_OK_SHIFT,
+ IBV_WC_WITH_INV = 1 << 3
};
struct ibv_wc {
@@ -368,7 +370,10 @@ struct ibv_wc {
enum ibv_wc_opcode opcode;
uint32_t vendor_err;
uint32_t byte_len;
- uint32_t imm_data; /* in network byte order */
+ /* When (wc_flags & IBV_WC_WITH_IMM): Immediate data in network byte order.
+ * When (wc_flags & IBV_WC_WITH_INV): Stores the invalidated rkey.
+ */
+ uint32_t imm_data;
uint32_t qp_num;
uint32_t src_qp;
int wc_flags;
@@ -701,7 +706,10 @@ enum ibv_wr_opcode {
IBV_WR_SEND_WITH_IMM,
IBV_WR_RDMA_READ,
IBV_WR_ATOMIC_CMP_AND_SWP,
- IBV_WR_ATOMIC_FETCH_AND_ADD
+ IBV_WR_ATOMIC_FETCH_AND_ADD,
+ IBV_WR_LOCAL_INV,
+ IBV_WR_BIND_MW,
+ IBV_WR_SEND_WITH_INV,
};
enum ibv_send_flags {
@@ -748,6 +756,12 @@ struct ibv_send_wr {
uint32_t remote_srqn;
} xrc;
} qp_type;
+ struct {
+ struct ibv_mw *mw;
+ uint32_t rkey;
+ struct ibv_mw_bind_info bind_info;
+ } bind_mw;
+
};
struct ibv_recv_wr {
--
1.8.3.1
--
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