From: Bodong Wang <bodong@xxxxxxxxxxxx>
Add IBV_DEVICE_UD_IP_CSUM, IBV_DEVICE_RAW_IP_CSUM and IBV_DEVICE_RC_IP_CSUM to
device capability enum field. These enum will denote IPv4 checksum offload
support for UD, RAW and RC QPs.
Flags IBV_SEND_IP_CSUM and IBV_WC_IP_CSUM_OK are added for utilizing this
capability for send and receive separately.
Signed-off-by: Bodong Wang <bodong@xxxxxxxxxxxx>
---
include/infiniband/verbs.h | 14 ++++++++++++--
man/ibv_poll_cq.3 | 5 +++++
man/ibv_post_send.3 | 4 ++++
3 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/include/infiniband/verbs.h b/include/infiniband/verbs.h
index 1ff5265..ae22768 100644
--- a/include/infiniband/verbs.h
+++ b/include/infiniband/verbs.h
@@ -116,7 +116,10 @@ enum ibv_device_cap_flags {
IBV_DEVICE_RC_RNR_NAK_GEN = 1 << 12,
IBV_DEVICE_SRQ_RESIZE = 1 << 13,
IBV_DEVICE_N_NOTIFY_CQ = 1 << 14,
+ IBV_DEVICE_UD_IP_CSUM = 1 << 18,
IBV_DEVICE_XRC = 1 << 20,
+ IBV_DEVICE_RC_IP_CSUM = 1 << 25,
+ IBV_DEVICE_RAW_IP_CSUM = 1 << 26,
IBV_DEVICE_MANAGED_FLOW_STEERING = 1 << 29
};
@@ -348,9 +351,14 @@ enum ibv_wc_opcode {
IBV_WC_RECV_RDMA_WITH_IMM
};
+enum {
+ IBV_WC_IP_CSUM_OK_SHIFT = 2
+};
+
enum ibv_wc_flags {
IBV_WC_GRH = 1 << 0,
- IBV_WC_WITH_IMM = 1 << 1
+ IBV_WC_WITH_IMM = 1 << 1,
+ IBV_WC_IP_CSUM_OK = 1 << IBV_WC_IP_CSUM_OK_SHIFT
};
struct ibv_wc {
@@ -688,7 +696,8 @@ enum ibv_send_flags {
IBV_SEND_FENCE = 1 << 0,
IBV_SEND_SIGNALED = 1 << 1,
IBV_SEND_SOLICITED = 1 << 2,
- IBV_SEND_INLINE = 1 << 3
+ IBV_SEND_INLINE = 1 << 3,
+ IBV_SEND_IP_CSUM = 1 << 4
};
struct ibv_sge {
@@ -1459,6 +1468,7 @@ ibv_query_device_ex(struct ibv_context *context,
legacy:
memset(attr, 0, sizeof(*attr));
ret = ibv_query_device(context, &attr->orig_attr);
+
return ret;
}
diff --git a/man/ibv_poll_cq.3 b/man/ibv_poll_cq.3
index 57c6daa..bbf48ff 100644
--- a/man/ibv_poll_cq.3
+++ b/man/ibv_poll_cq.3
@@ -50,6 +50,11 @@ It is either 0 or the bitwise OR of one or more of the following flags:
.B IBV_WC_GRH \fR GRH is present (valid only for UD QPs)
.TP
.B IBV_WC_WITH_IMM \fR Immediate data value is valid
+.TP
+.B IBV_WC_IP_CSUM_OK \fR TCP/UDP checksum over IPv4 and IPv4 header checksum are
+verified.
+Valid only when \fBdevice_cap_flags\fR in device_attr indicates current QP is
+supported by checksum offload.
.PP
Not all
.I wc
diff --git a/man/ibv_post_send.3 b/man/ibv_post_send.3
index 33fbb50..eeea078 100644
--- a/man/ibv_post_send.3
+++ b/man/ibv_post_send.3
@@ -98,6 +98,10 @@ The attribute send_flags describes the properties of the \s-1WR\s0. It is either
.TP
.B IBV_SEND_INLINE \fR Send data in given gather list as inline data
in a send WQE. Valid only for Send and RDMA Write. The L_Key will not be checked.
+.TP
+.B IBV_SEND_IP_CSUM \fR Offload the IPv4 and TCP/UDP checksum calculation.
+Valid only when \fBdevice_cap_flags\fR in device_attr indicates current QP is
+supported by checksum offload.
.SH "RETURN VALUE"
.B ibv_post_send()
returns 0 on success, or the value of errno on failure (which indicates the failure reason).
--
1.8.3.1
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