From: Danit Goldberg <danitg@xxxxxxxxxxxx>
Add new option to rdma_set_option that allows applications to override
the RDMA-CM's QP ACK timeout value.
Signed-off-by: Danit Goldberg <danitg@xxxxxxxxxxxx>
Reviewed-by: Moni Shoua <monis@xxxxxxxxxxxx>
Signed-off-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
librdmacm/man/rdma_set_option.3 | 3 +++
librdmacm/rdma_cma.h | 4 ++++
2 files changed, 7 insertions(+)
diff --git a/librdmacm/man/rdma_set_option.3 b/librdmacm/man/rdma_set_option.3
index 24b13e4..c6660c6 100644
--- a/librdmacm/man/rdma_set_option.3
+++ b/librdmacm/man/rdma_set_option.3
@@ -38,6 +38,9 @@ The expected optlen is size of int.
.IP "RDMA_OPTION_IB_PATH" 12
Set IB path record data.
The expected optlen is size of struct ibv_path_data[].
+.IP "RDMA_OPTION_ID_ACK_TIMEOUT" 12
+Set QP ACK timeout.
+The value calculated according to the formula 4.096 * 2^(ack_timeout) usec.
.SH "RETURN VALUE"
Returns 0 on success, or -1 on error. If an error occurs, errno will be
set to indicate the failure reason.
diff --git a/librdmacm/rdma_cma.h b/librdmacm/rdma_cma.h
index 2096a81..6f3f074 100644
--- a/librdmacm/rdma_cma.h
+++ b/librdmacm/rdma_cma.h
@@ -691,6 +691,10 @@ enum {
RDMA_OPTION_ID_TOS = 0, /* uint8_t: RFC 2474 */
RDMA_OPTION_ID_REUSEADDR = 1, /* int: ~SO_REUSEADDR */
RDMA_OPTION_ID_AFONLY = 2, /* int: ~IPV6_V6ONLY */
+ RDMA_OPTION_ID_ACK_TIMEOUT = 3 /* uint8_t */
+};
+
+enum {
RDMA_OPTION_IB_PATH = 1 /* struct ibv_path_data[] */
};
--
1.8.3.1
