Commit 710dd1a0 authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

mlxsw: reg: Add Tunneling NVE General Configuration Register 



This register configures global NVE configuration such as source IP of
the NVE tunnel and UDP source port calculation.

Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Reviewed-by: default avatarPetr Machata <petrm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent beda7f72

drivers/net/ethernet/mellanox/mlxsw/reg.h

+185 −0
Original line number Diff line number Diff line
@@ -8292,6 +8292,190 @@ static inline void mlxsw_reg_mgpc_pack(char *payload, u32 counter_index, 
	mlxsw_reg_mgpc_opcode_set(payload, opcode);

}



/* TNGCR - Tunneling NVE General Configuration Register

 * ----------------------------------------------------

 * The TNGCR register is used for setting up the NVE Tunneling configuration.

 */

#define MLXSW_REG_TNGCR_ID 0xA001

#define MLXSW_REG_TNGCR_LEN 0x44



MLXSW_REG_DEFINE(tngcr, MLXSW_REG_TNGCR_ID, MLXSW_REG_TNGCR_LEN);



enum mlxsw_reg_tngcr_type {

	MLXSW_REG_TNGCR_TYPE_VXLAN,

	MLXSW_REG_TNGCR_TYPE_VXLAN_GPE,

	MLXSW_REG_TNGCR_TYPE_GENEVE,

	MLXSW_REG_TNGCR_TYPE_NVGRE,

};



/* reg_tngcr_type

 * Tunnel type for encapsulation and decapsulation. The types are mutually

 * exclusive.

 * Note: For Spectrum the NVE parsing must be enabled in MPRS.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, type, 0x00, 0, 4);



/* reg_tngcr_nve_valid

 * The VTEP is valid. Allows adding FDB entries for tunnel encapsulation.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_valid, 0x04, 31, 1);



/* reg_tngcr_nve_ttl_uc

 * The TTL for NVE tunnel encapsulation underlay unicast packets.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_ttl_uc, 0x04, 0, 8);



/* reg_tngcr_nve_ttl_mc

 * The TTL for NVE tunnel encapsulation underlay multicast packets.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_ttl_mc, 0x08, 0, 8);



enum {

	/* Do not copy flow label. Calculate flow label using nve_flh. */

	MLXSW_REG_TNGCR_FL_NO_COPY,

	/* Copy flow label from inner packet if packet is IPv6 and

	 * encapsulation is by IPv6. Otherwise, calculate flow label using

	 * nve_flh.

	 */

	MLXSW_REG_TNGCR_FL_COPY,

};



/* reg_tngcr_nve_flc

 * For NVE tunnel encapsulation: Flow label copy from inner packet.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_flc, 0x0C, 25, 1);



enum {

	/* Flow label is static. In Spectrum this means '0'. Spectrum-2

	 * uses {nve_fl_prefix, nve_fl_suffix}.

	 */

	MLXSW_REG_TNGCR_FL_NO_HASH,

	/* 8 LSBs of the flow label are calculated from ECMP hash of the

	 * inner packet. 12 MSBs are configured by nve_fl_prefix.

	 */

	MLXSW_REG_TNGCR_FL_HASH,

};



/* reg_tngcr_nve_flh

 * NVE flow label hash.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_flh, 0x0C, 24, 1);



/* reg_tngcr_nve_fl_prefix

 * NVE flow label prefix. Constant 12 MSBs of the flow label.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_fl_prefix, 0x0C, 8, 12);



/* reg_tngcr_nve_fl_suffix

 * NVE flow label suffix. Constant 8 LSBs of the flow label.

 * Reserved when nve_flh=1 and for Spectrum.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_fl_suffix, 0x0C, 0, 8);



enum {

	/* Source UDP port is fixed (default '0') */

	MLXSW_REG_TNGCR_UDP_SPORT_NO_HASH,

	/* Source UDP port is calculated based on hash */

	MLXSW_REG_TNGCR_UDP_SPORT_HASH,

};



/* reg_tngcr_nve_udp_sport_type

 * NVE UDP source port type.

 * Spectrum uses LAG hash (SLCRv2). Spectrum-2 uses ECMP hash (RECRv2).

 * When the source UDP port is calculated based on hash, then the 8 LSBs

 * are calculated from hash the 8 MSBs are configured by

 * nve_udp_sport_prefix.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_udp_sport_type, 0x10, 24, 1);



/* reg_tngcr_nve_udp_sport_prefix

 * NVE UDP source port prefix. Constant 8 MSBs of the UDP source port.

 * Reserved when NVE type is NVGRE.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_udp_sport_prefix, 0x10, 8, 8);



/* reg_tngcr_nve_group_size_mc

 * The amount of sequential linked lists of MC entries. The first linked

 * list is configured by SFD.underlay_mc_ptr.

 * Valid values: 1, 2, 4, 8, 16, 32, 64

 * The linked list are configured by TNUMT.

 * The hash is set by LAG hash.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_group_size_mc, 0x18, 0, 8);



/* reg_tngcr_nve_group_size_flood

 * The amount of sequential linked lists of flooding entries. The first

 * linked list is configured by SFMR.nve_tunnel_flood_ptr

 * Valid values: 1, 2, 4, 8, 16, 32, 64

 * The linked list are configured by TNUMT.

 * The hash is set by LAG hash.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, nve_group_size_flood, 0x1C, 0, 8);



/* reg_tngcr_learn_enable

 * During decapsulation, whether to learn from NVE port.

 * Reserved when Spectrum-2. See TNPC.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, learn_enable, 0x20, 31, 1);



/* reg_tngcr_underlay_virtual_router

 * Underlay virtual router.

 * Reserved when Spectrum-2.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, underlay_virtual_router, 0x20, 0, 16);



/* reg_tngcr_underlay_rif

 * Underlay ingress router interface. RIF type should be loopback generic.

 * Reserved when Spectrum.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, underlay_rif, 0x24, 0, 16);



/* reg_tngcr_usipv4

 * Underlay source IPv4 address of the NVE.

 * Access: RW

 */

MLXSW_ITEM32(reg, tngcr, usipv4, 0x28, 0, 32);



/* reg_tngcr_usipv6

 * Underlay source IPv6 address of the NVE. For Spectrum, must not be

 * modified under traffic of NVE tunneling encapsulation.

 * Access: RW

 */

MLXSW_ITEM_BUF(reg, tngcr, usipv6, 0x30, 16);



static inline void mlxsw_reg_tngcr_pack(char *payload,

					enum mlxsw_reg_tngcr_type type,

					bool valid, u8 ttl)

{

	MLXSW_REG_ZERO(tngcr, payload);

	mlxsw_reg_tngcr_type_set(payload, type);

	mlxsw_reg_tngcr_nve_valid_set(payload, valid);

	mlxsw_reg_tngcr_nve_ttl_uc_set(payload, ttl);

	mlxsw_reg_tngcr_nve_ttl_mc_set(payload, ttl);

	mlxsw_reg_tngcr_nve_flc_set(payload, MLXSW_REG_TNGCR_FL_NO_COPY);

	mlxsw_reg_tngcr_nve_flh_set(payload, 0);

	mlxsw_reg_tngcr_nve_udp_sport_type_set(payload,

					       MLXSW_REG_TNGCR_UDP_SPORT_HASH);

	mlxsw_reg_tngcr_nve_udp_sport_prefix_set(payload, 0);

	mlxsw_reg_tngcr_nve_group_size_mc_set(payload, 1);

	mlxsw_reg_tngcr_nve_group_size_flood_set(payload, 1);

}



/* TIGCR - Tunneling IPinIP General Configuration Register

 * -------------------------------------------------------

 * The TIGCR register is used for setting up the IPinIP Tunnel configuration.
@@ -8841,6 +9025,7 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = { 
	MLXSW_REG(mcc),

	MLXSW_REG(mcda),

	MLXSW_REG(mgpc),

	MLXSW_REG(tngcr),

	MLXSW_REG(tigcr),

	MLXSW_REG(sbpr),

	MLXSW_REG(sbcm),

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