netdev - [PATCH net-next 4/7] mlxsw: reg: Add inner packet fields to RECRv2 register

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Date:   Wed, 19 May 2021 15:08:21 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, kuba@...nel.org, jiri@...dia.com,
        petrm@...dia.com, dsahern@...il.com, mlxsw@...dia.com,
        Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 4/7] mlxsw: reg: Add inner packet fields to RECRv2 register

From: Ido Schimmel <idosch@...dia.com>

The RECRv2 register is used for setting up the router's ECMP hash
configuration. Extend it with inner packet fields to allow the ECMP hash
to be calculated based on inner flow information.

Signed-off-by: Ido Schimmel <idosch@...dia.com>
Reviewed-by: Petr Machata <petrm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/reg.h | 42 +++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index 4039c9d21824..f9419cc53480 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -8351,6 +8351,48 @@ enum {
  */
 MLXSW_ITEM_BIT_ARRAY(reg, recr2, outer_header_fields_enable, 0x14, 0x14, 1);
 
+/* reg_recr2_inner_header_enables
+ * Bit mask where each bit enables a specific inner layer to be included in the
+ * hash calculation. Same values as reg_recr2_outer_header_enables.
+ * Access: RW
+ */
+MLXSW_ITEM_BIT_ARRAY(reg, recr2, inner_header_enables, 0x2C, 0x04, 1);
+
+enum {
+	/* Inner IPv4 Source IP */
+	MLXSW_REG_RECR2_INNER_IPV4_SIP0			= 3,
+	MLXSW_REG_RECR2_INNER_IPV4_SIP3			= 6,
+	/* Inner IPv4 Destination IP */
+	MLXSW_REG_RECR2_INNER_IPV4_DIP0			= 7,
+	MLXSW_REG_RECR2_INNER_IPV4_DIP3			= 10,
+	/* Inner IP Protocol */
+	MLXSW_REG_RECR2_INNER_IPV4_PROTOCOL		= 11,
+	/* Inner IPv6 Source IP */
+	MLXSW_REG_RECR2_INNER_IPV6_SIP0_7		= 12,
+	MLXSW_REG_RECR2_INNER_IPV6_SIP8			= 20,
+	MLXSW_REG_RECR2_INNER_IPV6_SIP15		= 27,
+	/* Inner IPv6 Destination IP */
+	MLXSW_REG_RECR2_INNER_IPV6_DIP0_7		= 28,
+	MLXSW_REG_RECR2_INNER_IPV6_DIP8			= 36,
+	MLXSW_REG_RECR2_INNER_IPV6_DIP15		= 43,
+	/* Inner IPv6 Next Header */
+	MLXSW_REG_RECR2_INNER_IPV6_NEXT_HEADER		= 44,
+	/* Inner IPv6 Flow Label */
+	MLXSW_REG_RECR2_INNER_IPV6_FLOW_LABEL		= 45,
+	/* Inner TCP/UDP Source Port */
+	MLXSW_REG_RECR2_INNER_TCP_UDP_SPORT		= 46,
+	/* Inner TCP/UDP Destination Port */
+	MLXSW_REG_RECR2_INNER_TCP_UDP_DPORT		= 47,
+
+	__MLXSW_REG_RECR2_INNER_FIELD_CNT,
+};
+
+/* reg_recr2_inner_header_fields_enable
+ * Inner packet fields to enable for ECMP hash subject to inner_header_enables.
+ * Access: RW
+ */
+MLXSW_ITEM_BIT_ARRAY(reg, recr2, inner_header_fields_enable, 0x30, 0x08, 1);
+
 static inline void mlxsw_reg_recr2_pack(char *payload, u32 seed)
 {
 	MLXSW_REG_ZERO(recr2, payload);
-- 
2.31.1