svn commit: r294318 - head/sys/dev/mlx5/mlx5_en

[Hans Petter Selasky]

Author: hselasky
Date: Tue Jan 19 10:19:33 2016
New Revision: 294318
URL: https://svnweb.freebsd.org/changeset/base/294318

Log:
  Add clarifying comment about CQE zipping.
  
  Reviewed by:	gnn
  Sponsored by:	Mellanox Technologies
  MFC after:	5 days
  Differential Revision:	https://reviews.freebsd.org/D4940

Modified:
  head/sys/dev/mlx5/mlx5_en/mlx5_en_rx.c

Modified: head/sys/dev/mlx5/mlx5_en/mlx5_en_rx.c
==============================================================================
--- head/sys/dev/mlx5/mlx5_en/mlx5_en_rx.c	Tue Jan 19 10:17:24 2016	(r294317)
+++ head/sys/dev/mlx5/mlx5_en/mlx5_en_rx.c	Tue Jan 19 10:19:33 2016	(r294318)
@@ -270,6 +270,11 @@ mlx5e_decompress_cqe(struct mlx5e_cq *cq
     struct mlx5_mini_cqe8 *mini,
     u16 wqe_counter, int i)
 {
+	/*
+	 * NOTE: The fields which are not set here are copied from the
+	 * initial and common title. See memcpy() in
+	 * mlx5e_write_cqe_slot().
+	 */
 	title->byte_cnt = mini->byte_cnt;
 	title->wqe_counter = cpu_to_be16((wqe_counter + i) & cq->wq.sz_m1);
 	title->check_sum = mini->checksum;