[PATCH mlx5-next 0/3] mlx5-next updates 2025-07-17

[PATCH mlx5-next 0/3] mlx5-next updates 2025-07-17

[Tariq Toukan]

Hi,

This series contains mlx5 shared updates as preparation for upcoming
features.

Regards,
Tariq


Jianbo Liu (1):
  net/mlx5: Add IFC bits to support RSS for IPSec offload

Oren Sidi (2):
  net/mlx5: Add IFC bits and enums for buf_ownership
  net/mlx5: Expose cable_length field in PFCC register

 .../mellanox/mlx5/core/steering/hws/definer.c | 13 +++--
 include/linux/mlx5/mlx5_ifc.h                 | 58 ++++++++++++++-----
 2 files changed, 53 insertions(+), 18 deletions(-)


base-commit: cd1746cb6555a2238c4aae9f9d60b637a61bf177
-- 
2.31.1

[PATCH mlx5-next 1/3] net/mlx5: Add IFC bits to support RSS for IPSec offload

[Tariq Toukan]

From: Jianbo Liu <jianbol@nvidia.com>

This adds the capabilities, ipsec_next_header and inner/outer
l4_type_ext fields to support RSS for the decrypted packets.

These fields are specifically for firmware steering. HWS validation
logic is updated to correctly handle the changes, ensuring the
unsupported fields are not set.

Besides, reserved_at_c4 is fixed to reserved_at_d4 to reflect the
accurate offset within the structure.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 .../mellanox/mlx5/core/steering/hws/definer.c | 13 ++++++----
 include/linux/mlx5/mlx5_ifc.h                 | 25 +++++++++++++------
 2 files changed, 26 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c
index d45e1145d197..c6436c3a7a83 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c
@@ -727,8 +727,9 @@ hws_definer_conv_outer(struct mlx5hws_definer_conv_data *cd,
 	u32 *s_ipv6, *d_ipv6;
 
 	if (HWS_IS_FLD_SET_SZ(match_param, outer_headers.l4_type, 0x2) ||
-	    HWS_IS_FLD_SET_SZ(match_param, outer_headers.reserved_at_c2, 0xe) ||
-	    HWS_IS_FLD_SET_SZ(match_param, outer_headers.reserved_at_c4, 0x4)) {
+	    HWS_IS_FLD_SET_SZ(match_param, outer_headers.l4_type_ext, 0x4) ||
+	    HWS_IS_FLD_SET_SZ(match_param, outer_headers.reserved_at_c6, 0xa) ||
+	    HWS_IS_FLD_SET_SZ(match_param, outer_headers.reserved_at_d4, 0x4)) {
 		mlx5hws_err(cd->ctx, "Unsupported outer parameters set\n");
 		return -EINVAL;
 	}
@@ -903,8 +904,9 @@ hws_definer_conv_inner(struct mlx5hws_definer_conv_data *cd,
 	u32 *s_ipv6, *d_ipv6;
 
 	if (HWS_IS_FLD_SET_SZ(match_param, inner_headers.l4_type, 0x2) ||
-	    HWS_IS_FLD_SET_SZ(match_param, inner_headers.reserved_at_c2, 0xe) ||
-	    HWS_IS_FLD_SET_SZ(match_param, inner_headers.reserved_at_c4, 0x4)) {
+	    HWS_IS_FLD_SET_SZ(match_param, inner_headers.l4_type_ext, 0x4) ||
+	    HWS_IS_FLD_SET_SZ(match_param, inner_headers.reserved_at_c6, 0xa) ||
+	    HWS_IS_FLD_SET_SZ(match_param, inner_headers.reserved_at_d4, 0x4)) {
 		mlx5hws_err(cd->ctx, "Unsupported inner parameters set\n");
 		return -EINVAL;
 	}
@@ -1279,7 +1281,8 @@ hws_definer_conv_misc2(struct mlx5hws_definer_conv_data *cd,
 	struct mlx5hws_definer_fc *curr_fc;
 
 	if (HWS_IS_FLD_SET_SZ(match_param, misc_parameters_2.reserved_at_1a0, 0x8) ||
-	    HWS_IS_FLD_SET_SZ(match_param, misc_parameters_2.reserved_at_1b8, 0x8) ||
+	    HWS_IS_FLD_SET_SZ(match_param,
+			      misc_parameters_2.ipsec_next_header, 0x8) ||
 	    HWS_IS_FLD_SET_SZ(match_param, misc_parameters_2.reserved_at_1c0, 0x40) ||
 	    HWS_IS_FLD_SET(match_param, misc_parameters_2.macsec_syndrome) ||
 	    HWS_IS_FLD_SET(match_param, misc_parameters_2.ipsec_syndrome)) {
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 639dd0b56655..c9a7773ac8ec 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -420,7 +420,8 @@ struct mlx5_ifc_flow_table_fields_supported_bits {
 
 /* Table 2170 - Flow Table Fields Supported 2 Format */
 struct mlx5_ifc_flow_table_fields_supported_2_bits {
-	u8         reserved_at_0[0x2];
+	u8         inner_l4_type_ext[0x1];
+	u8         outer_l4_type_ext[0x1];
 	u8         inner_l4_type[0x1];
 	u8         outer_l4_type[0x1];
 	u8         reserved_at_4[0xa];
@@ -429,7 +430,11 @@ struct mlx5_ifc_flow_table_fields_supported_2_bits {
 	u8         tunnel_header_0_1[0x1];
 	u8         reserved_at_11[0xf];
 
-	u8         reserved_at_20[0x60];
+	u8         reserved_at_20[0xf];
+	u8         ipsec_next_header[0x1];
+	u8         reserved_at_30[0x10];
+
+	u8         reserved_at_40[0x40];
 };
 
 struct mlx5_ifc_flow_table_prop_layout_bits {
@@ -552,6 +557,13 @@ enum {
 	MLX5_PACKET_L4_TYPE_UDP,
 };
 
+enum {
+	MLX5_PACKET_L4_TYPE_EXT_NONE,
+	MLX5_PACKET_L4_TYPE_EXT_TCP,
+	MLX5_PACKET_L4_TYPE_EXT_UDP,
+	MLX5_PACKET_L4_TYPE_EXT_ICMP,
+};
+
 struct mlx5_ifc_fte_match_set_lyr_2_4_bits {
 	u8         smac_47_16[0x20];
 
@@ -578,10 +590,10 @@ struct mlx5_ifc_fte_match_set_lyr_2_4_bits {
 	u8         tcp_dport[0x10];
 
 	u8         l4_type[0x2];
-	u8         reserved_at_c2[0xe];
+	u8         l4_type_ext[0x4];
+	u8         reserved_at_c6[0xa];
 	u8         ipv4_ihl[0x4];
-	u8         reserved_at_c4[0x4];
-
+	u8         reserved_at_d4[0x4];
 	u8         ttl_hoplimit[0x8];
 
 	u8         udp_sport[0x10];
@@ -689,10 +701,9 @@ struct mlx5_ifc_fte_match_set_misc2_bits {
 	u8         metadata_reg_a[0x20];
 
 	u8         reserved_at_1a0[0x8];
-
 	u8         macsec_syndrome[0x8];
 	u8         ipsec_syndrome[0x8];
-	u8         reserved_at_1b8[0x8];
+	u8         ipsec_next_header[0x8];
 
 	u8         reserved_at_1c0[0x40];
 };
-- 
2.31.1

[PATCH mlx5-next 2/3] net/mlx5: Add IFC bits and enums for buf_ownership

[Tariq Toukan]

From: Oren Sidi <osidi@nvidia.com>

Extend structure layouts and defines buf_ownership.
buf_ownership indicates whether the buffer is managed by SW or FW.

Signed-off-by: Oren Sidi <osidi@nvidia.com>
Reviewed-by: Alex Lazar <alazar@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 include/linux/mlx5/mlx5_ifc.h | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index c9a7773ac8ec..e1220aa1e7dc 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -10474,8 +10474,16 @@ struct mlx5_ifc_pifr_reg_bits {
 	u8         port_filter_update_en[8][0x20];
 };
 
+enum {
+	MLX5_BUF_OWNERSHIP_UNKNOWN	= 0x0,
+	MLX5_BUF_OWNERSHIP_FW_OWNED	= 0x1,
+	MLX5_BUF_OWNERSHIP_SW_OWNED	= 0x2,
+};
+
 struct mlx5_ifc_pfcc_reg_bits {
-	u8         reserved_at_0[0x8];
+	u8         reserved_at_0[0x4];
+	u8	   buf_ownership[0x2];
+	u8	   reserved_at_6[0x2];
 	u8         local_port[0x8];
 	u8         reserved_at_10[0xb];
 	u8         ppan_mask_n[0x1];
@@ -10611,7 +10619,9 @@ struct mlx5_ifc_pcam_enhanced_features_bits {
 	u8         fec_200G_per_lane_in_pplm[0x1];
 	u8         reserved_at_1e[0x2a];
 	u8         fec_100G_per_lane_in_pplm[0x1];
-	u8         reserved_at_49[0x1f];
+	u8         reserved_at_49[0xa];
+	u8	   buffer_ownership[0x1];
+	u8	   resereved_at_54[0x14];
 	u8         fec_50G_per_lane_in_pplm[0x1];
 	u8         reserved_at_69[0x4];
 	u8         rx_icrc_encapsulated_counter[0x1];
-- 
2.31.1

[PATCH mlx5-next 3/3] net/mlx5: Expose cable_length field in PFCC register

[Tariq Toukan]

From: Oren Sidi <osidi@nvidia.com>

Introduce new "cable_length" field in PFCC register and related fields
to enhance rx buffer configuration management:
1. cable_length: Shifts cable length handling to fw by storing a
   manually entered length from user in PFCC.cable_length
2. lane_rate_oper: In a case where PFCC.cable_length is not supported,
   helps compute a default cable length

Signed-off-by: Oren Sidi <osidi@nvidia.com>
Reviewed-by: Alex Lazar <alazar@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 include/linux/mlx5/mlx5_ifc.h | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index e1220aa1e7dc..ed4130e49c27 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -9994,6 +9994,10 @@ struct mlx5_ifc_pude_reg_bits {
 	u8         reserved_at_20[0x60];
 };
 
+enum {
+	MLX5_PTYS_CONNECTOR_TYPE_PORT_DA = 0x7,
+};
+
 struct mlx5_ifc_ptys_reg_bits {
 	u8         reserved_at_0[0x1];
 	u8         an_disable_admin[0x1];
@@ -10030,7 +10034,8 @@ struct mlx5_ifc_ptys_reg_bits {
 	u8         ib_link_width_oper[0x10];
 	u8         ib_proto_oper[0x10];
 
-	u8         reserved_at_160[0x1c];
+	u8         reserved_at_160[0x8];
+	u8         lane_rate_oper[0x14];
 	u8         connector_type[0x4];
 
 	u8         eth_proto_lp_advertise[0x20];
@@ -10485,7 +10490,8 @@ struct mlx5_ifc_pfcc_reg_bits {
 	u8	   buf_ownership[0x2];
 	u8	   reserved_at_6[0x2];
 	u8         local_port[0x8];
-	u8         reserved_at_10[0xb];
+	u8         reserved_at_10[0xa];
+	u8	   cable_length_mask[0x1];
 	u8         ppan_mask_n[0x1];
 	u8         minor_stall_mask[0x1];
 	u8         critical_stall_mask[0x1];
@@ -10514,7 +10520,10 @@ struct mlx5_ifc_pfcc_reg_bits {
 	u8         device_stall_minor_watermark[0x10];
 	u8         device_stall_critical_watermark[0x10];
 
-	u8         reserved_at_a0[0x60];
+	u8	   reserved_at_a0[0x18];
+	u8	   cable_length[0x8];
+
+	u8         reserved_at_c0[0x40];
 };
 
 struct mlx5_ifc_pelc_reg_bits {
@@ -10615,7 +10624,9 @@ struct mlx5_ifc_mtutc_reg_bits {
 struct mlx5_ifc_pcam_enhanced_features_bits {
 	u8         reserved_at_0[0x10];
 	u8         ppcnt_recovery_counters[0x1];
-	u8         reserved_at_11[0xc];
+	u8         reserved_at_11[0x7];
+	u8	   cable_length[0x1];
+	u8	   reserved_at_19[0x4];
 	u8         fec_200G_per_lane_in_pplm[0x1];
 	u8         reserved_at_1e[0x2a];
 	u8         fec_100G_per_lane_in_pplm[0x1];
-- 
2.31.1

Re: [PATCH mlx5-next 0/3] mlx5-next updates 2025-07-17

[Leon Romanovsky]

On Thu, 17 Jul 2025 09:48:12 +0300, Tariq Toukan wrote:
> This series contains mlx5 shared updates as preparation for upcoming
> features.
> 
> Regards,
> Tariq
> 
> 
> [...]

Applied, thanks!

[1/3] net/mlx5: Add IFC bits to support RSS for IPSec offload
      https://git.kernel.org/rdma/rdma/c/438794e93f6271
[2/3] net/mlx5: Add IFC bits and enums for buf_ownership
      https://git.kernel.org/rdma/rdma/c/6f09ee0b583cad
[3/3] net/mlx5: Expose cable_length field in PFCC register
      https://git.kernel.org/rdma/rdma/c/9a0048e0ae14cb

Best regards,
-- 
Leon Romanovsky <leon@kernel.org>