FM10K/dpdk-fm10k
FM10K/dpdk-fm10k
1
0
Fork 0
Code Issues Pull requests Releases Activity

common/mlx5: query scatter FCS with decap capability

Browse source 
As scatter FCS might be not supported for decapsulated tunnel
packets in some NIC HW, a new capability bit which indicates
if scatter FCS works with decap is added.

Signed-off-by: Suanming Mou <suanmingm@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
This commit is contained in:
Suanming Mou 2020-07-15 21:10:20 +08:00 committed by Ferruh Yigit
parent ac3fc732c4
commit 91f7338e97
4 changed files with 12 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
doc/guides/nics/mlx5.rst
View file

@ -297,6 +297,12 @@ Limitations
Other TCP packets (e.g. with MPLS label) received on Rx queue with LRO enabled, will be received with bad checksum.
- CRC:
- ``DEV_RX_OFFLOAD_KEEP_CRC`` cannot be supported with decapsulation
for some NICs (such as ConnectX-6 Dx and BlueField 2).
The capability bit ``scatter_fcs_w_decap_disable`` shows NIC support.
Statistics
----------

2
drivers/common/mlx5/mlx5_devx_cmds.c
View file

@ -704,6 +704,8 @@ mlx5_devx_cmd_query_hca_attr(void *ctx,
log_max_static_sq_wq);
attr->dev_freq_khz = MLX5_GET(cmd_hca_cap, hcattr,
device_frequency_khz);
attr->scatter_fcs_w_decap_disable =
MLX5_GET(cmd_hca_cap, hcattr, scatter_fcs_w_decap_disable);
attr->regex = MLX5_GET(cmd_hca_cap, hcattr, regexp);
attr->regexp_num_of_engines = MLX5_GET(cmd_hca_cap, hcattr,
regexp_num_of_engines);

1
drivers/common/mlx5/mlx5_devx_cmds.h
View file

@ -98,6 +98,7 @@ struct mlx5_hca_attr {
uint32_t non_wire_sq:1; /* SQ with non-wire ops is supported. */
uint32_t log_max_static_sq_wq:5; /* Static WQE size SQ. */
uint32_t dev_freq_khz; /* Timestamp counter frequency, kHz. */
uint32_t scatter_fcs_w_decap_disable:1;
uint32_t regex:1;
uint32_t regexp_num_of_engines;
struct mlx5_hca_qos_attr qos;

4
drivers/common/mlx5/mlx5_prm.h
View file

@ -1100,7 +1100,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 log_max_srq[0x5];
u8 reserved_at_b0[0x3];
u8 regexp_log_crspace_size[0x5];
u8 reserved_at_b8[0x8];
u8 reserved_at_b8[0x3];
u8 scatter_fcs_w_decap_disable[0x1];
u8 reserved_at_bc[0x4];
u8 reserved_at_c0[0x8];
u8 log_max_cq_sz[0x8];
u8 reserved_at_d0[0xb];