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[V2,01/10] i40iw: Optimize setting fragments

Message ID 1481306104-19352-2-git-send-email-tatyana.e.nikolova@intel.com (mailing list archive)
State Accepted
Headers show

Commit Message

Nikolova, Tatyana E Dec. 9, 2016, 5:54 p.m. UTC 
From: Mustafa Ismail <mustafa.ismail@intel.com>

Small optimizations replace subtract and multiply with add.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
---
 providers/i40iw/i40iw_uk.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
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Patch

diff --git a/providers/i40iw/i40iw_uk.c b/providers/i40iw/i40iw_uk.c
index aff3de6..4d353b5 100644
--- a/providers/i40iw/i40iw_uk.c
+++ b/providers/i40iw/i40iw_uk.c
@@ -291,9 +291,9 @@  static enum i40iw_status_code i40iw_rdma_write(struct i40iw_qp_uk *qp,
 
 	i40iw_set_fragment(wqe, I40IW_BYTE_0, op_info->lo_sg_list);
 
-	for (i = 1; i < op_info->num_lo_sges; i++) {
-		byte_off = I40IW_BYTE_32 + (i - 1) * 16;
+	for (i = 1, byte_off = I40IW_BYTE_32; i < op_info->num_lo_sges; i++) {
 		i40iw_set_fragment(wqe, byte_off, &op_info->lo_sg_list[i]);
+		byte_off += 16;
 	}
 
 	i40iw_wmb(); /* make sure WQE is populated before valid bit is set */
@@ -404,9 +404,9 @@  static enum i40iw_status_code i40iw_send(struct i40iw_qp_uk *qp,
 
 	i40iw_set_fragment(wqe, I40IW_BYTE_0, op_info->sg_list);
 
-	for (i = 1; i < op_info->num_sges; i++) {
-		byte_off = I40IW_BYTE_32 + (i - 1) * 16;
+	for (i = 1, byte_off = I40IW_BYTE_32; i < op_info->num_sges; i++) {
 		i40iw_set_fragment(wqe, byte_off, &op_info->sg_list[i]);
+		byte_off += 16;
 	}
 
 	i40iw_wmb(); /* make sure WQE is populated before valid bit is set */
@@ -692,9 +692,9 @@  static enum i40iw_status_code i40iw_post_receive(struct i40iw_qp_uk *qp,
 
 	i40iw_set_fragment(wqe, I40IW_BYTE_0, info->sg_list);
 
-	for (i = 1; i < info->num_sges; i++) {
-		byte_off = I40IW_BYTE_32 + (i - 1) * 16;
+	for (i = 1, byte_off = I40IW_BYTE_32; i < info->num_sges; i++) {
 		i40iw_set_fragment(wqe, byte_off, &info->sg_list[i]);
+		byte_off += 16;
 	}
 
 	i40iw_wmb(); /* make sure WQE is populated before valid bit is set */