From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
A CQ overrun is checked while posting a completion, and if
encountered, the QP is transferred to the appropriate error
state.
CQ update (and error discovery) are not synchronized with
WQE execution. In cross-channel mode, the send/receive
queues will forward their completions to managing QP.
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Reviewed-by: Sagi Grimberg <sagig@xxxxxxxxxxxx>
---
include/infiniband/verbs.h | 1 +
man/ibv_create_cq_ex.3 | 18 ++++++++++++++----
2 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/include/infiniband/verbs.h b/include/infiniband/verbs.h
index c3e863850d4e..466d779592bf 100644
--- a/include/infiniband/verbs.h
+++ b/include/infiniband/verbs.h
@@ -1207,6 +1207,7 @@ enum ibv_create_cq_attr {
enum ibv_create_cq_attr_flags {
IBV_CREATE_CQ_ATTR_COMPLETION_TIMESTAMP = 1 << 0,
+ IBV_CREATE_CQ_ATTR_IGNORE_OVERRUN = 1 << 1
};
struct ibv_create_cq_attr_ex {
diff --git a/man/ibv_create_cq_ex.3 b/man/ibv_create_cq_ex.3
index 9f9e049b0d43..f01a5513926b 100644
--- a/man/ibv_create_cq_ex.3
+++ b/man/ibv_create_cq_ex.3
@@ -1,6 +1,6 @@
.\" -*- nroff -*-
.\"
-.TH IBV_CREATE_CQ_EX 3 2006-10-31 libibverbs "Libibverbs Programmer's Manual"
+.TH IBV_CREATE_CQ_EX 3 2015-12-27 libibverbs "Libibverbs Programmer's Manual"
.SH "NAME"
ibv_create_cq_ex \- create a completion queue (CQ)
.SH "SYNOPSIS"
@@ -42,13 +42,19 @@ enum ibv_wc_flags_ex {
IBV_WC_EX_WITH_SLID = 1 << 7, /* Require slid in WC */
IBV_WC_EX_WITH_SL = 1 << 8, /* Require sl in WC */
IBV_WC_EX_WITH_DLID_PATH_BITS = 1 << 9, /* Require dlid path bits in WC */
- IBV_WC_EX_WITH_COMPLETION_TIMESTAMP = 1 << 10, /* Require completion timestamp in WC /*
+ IBV_WC_EX_WITH_COMPLETION_TIMESTAMP = 1 << 10, /* Require completion timestamp in WC */
};
+enum ibv_create_cq_attr_flags {
+ IBV_CREATE_CQ_ATTR_COMPLETION_TIMESTAMP = 1 << 0,
+ IBV_CREATE_CQ_ATTR_IGNORE_OVERRUN = 1 << 1 /* Ignore completion queue overrun errors */
+};
enum ibv_create_cq_attr {
- IBV_CREATE_CQ_ATTR_FLAGS = 1 << 0,
+ IBV_CREATE_CQ_ATTR_FLAGS = 1 << 0,
+ IBV_CREATE_CQ_ATTR_RESERVED = 1 << 1
};
+
.SH "RETURN VALUE"
.B ibv_create_cq_ex()
returns a pointer to the CQ, or NULL if the request fails.
@@ -68,4 +74,8 @@ CQ should be destroyed with ibv_destroy_cq.
.BR ibv_create_qp (3)
.SH "AUTHORS"
.TP
-Matan Barak <matanb@xxxxxxxxxxxx>
+Matan Barak
+.RI < matanb@xxxxxxxxxxxx >
+.TP
+Leon Romanovsky
+.RI < leonro@xxxxxxxxxxxx >
--
1.7.12.4
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