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authorMatan Azrad <matan@mellanox.com>2019-07-22 14:52:23 +0000
committerFerruh Yigit <ferruh.yigit@intel.com>2019-07-23 14:31:36 +0200
commita496e093177781fcf449b5af36952e922cf0f2b5 (patch)
tree591db195636bf4966e5efc67b910ecb57c2a75cf /drivers/net/mlx5/mlx5_rxtx.h
parente4c2a16eb1dee83f945abc2d5be68b8841de4e78 (diff)
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net/mlx5: zero LRO mbuf headroom
LRO packet may consume all the stride memory, hence the PMD cannot guaranty head-room for the LRO mbuf. The issue is lack in HW support to write the packet in offset from the stride start. A new striding RQ feature may be added in CX6 DX to allow head-room and tail-room for the LRO strides. Signed-off-by: Matan Azrad <matan@mellanox.com> Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Diffstat (limited to 'drivers/net/mlx5/mlx5_rxtx.h')
-rw-r--r--drivers/net/mlx5/mlx5_rxtx.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
index bbd9b31..4252832 100644
--- a/drivers/net/mlx5/mlx5_rxtx.h
+++ b/drivers/net/mlx5/mlx5_rxtx.h
@@ -114,7 +114,8 @@ struct mlx5_rxq_data {
unsigned int strd_sz_n:4; /* Log 2 of stride size. */
unsigned int strd_shift_en:1; /* Enable 2bytes shift on a stride. */
unsigned int err_state:2; /* enum mlx5_rxq_err_state. */
- unsigned int :4; /* Remaining bits. */
+ unsigned int strd_headroom_en:1; /* Enable mbuf headroom in MPRQ. */
+ unsigned int :3; /* Remaining bits. */
volatile uint32_t *rq_db;
volatile uint32_t *cq_db;
uint16_t port_id;