Commit 9d106c6d authored by Dmitry Bogdanov's avatar Dmitry Bogdanov Committed by David S. Miller
Browse files

net: atlantic: MACSec egress offload HW bindings 



This patch adds the Atlantic HW-specific bindings for MACSec egress, e.g.
register addresses / structs, helper function, etc, which will be used by
actual callback implementations.

Signed-off-by: default avatarDmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: default avatarMark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: default avatarIgor Russkikh <irusskikh@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 62c1c2e6

drivers/net/ethernet/aquantia/atlantic/Makefile

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@@ -24,7 +24,8 @@ atlantic-objs := aq_main.o \ 
	hw_atl/hw_atl_b0.o \

	hw_atl/hw_atl_utils.o \

	hw_atl/hw_atl_utils_fw2x.o \

	hw_atl/hw_atl_llh.o

	hw_atl/hw_atl_llh.o \

	macsec/macsec_api.o



atlantic-$(CONFIG_MACSEC) += aq_macsec.o

drivers/net/ethernet/aquantia/atlantic/macsec/MSS_Egress_registers.h

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/* SPDX-License-Identifier: GPL-2.0-only */

/* Atlantic Network Driver

 * Copyright (C) 2020 Marvell International Ltd.

 */



#ifndef MSS_EGRESS_REGS_HEADER

#define MSS_EGRESS_REGS_HEADER



#define MSS_EGRESS_CTL_REGISTER_ADDR 0x00005002

#define MSS_EGRESS_SA_EXPIRED_STATUS_REGISTER_ADDR 0x00005060

#define MSS_EGRESS_SA_THRESHOLD_EXPIRED_STATUS_REGISTER_ADDR 0x00005062

#define MSS_EGRESS_LUT_ADDR_CTL_REGISTER_ADDR 0x00005080

#define MSS_EGRESS_LUT_CTL_REGISTER_ADDR 0x00005081

#define MSS_EGRESS_LUT_DATA_CTL_REGISTER_ADDR 0x000050A0



struct mss_egress_ctl_register {

	union {

		struct {

			unsigned int soft_reset : 1;

			unsigned int drop_kay_packet : 1;

			unsigned int drop_egprc_lut_miss : 1;

			unsigned int gcm_start : 1;

			unsigned int gcm_test_mode : 1;

			unsigned int unmatched_use_sc_0 : 1;

			unsigned int drop_invalid_sa_sc_packets : 1;

			unsigned int reserved0 : 1;

			/* Should always be set to 0. */

			unsigned int external_classification_enable : 1;

			unsigned int icv_lsb_8bytes_enable : 1;

			unsigned int high_prio : 1;

			unsigned int clear_counter : 1;

			unsigned int clear_global_time : 1;

			unsigned int ethertype_explicit_sectag_lsb : 3;

		} bits_0;

		unsigned short word_0;

	};

	union {

		struct {

			unsigned int ethertype_explicit_sectag_msb : 13;

			unsigned int reserved0 : 3;

		} bits_1;

		unsigned short word_1;

	};

};



struct mss_egress_lut_addr_ctl_register {

	union {

		struct {

			unsigned int lut_addr : 9;

			unsigned int reserved0 : 3;

			/* 0x0 : Egress MAC Control FIlter (CTLF) LUT

			 * 0x1 : Egress Classification LUT

			 * 0x2 : Egress SC/SA LUT

			 * 0x3 : Egress SMIB

			 */

			unsigned int lut_select : 4;

		} bits_0;

		unsigned short word_0;

	};

};



struct mss_egress_lut_ctl_register {

	union {

		struct {

			unsigned int reserved0 : 14;

			unsigned int lut_read : 1;

			unsigned int lut_write : 1;

		} bits_0;

		unsigned short word_0;

	};

};



#endif /* MSS_EGRESS_REGS_HEADER */

drivers/net/ethernet/aquantia/atlantic/macsec/macsec_api.c

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File added.

Preview size limit exceeded, changes collapsed.

drivers/net/ethernet/aquantia/atlantic/macsec/macsec_api.h

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/* SPDX-License-Identifier: GPL-2.0-only */

/* Atlantic Network Driver

 * Copyright (C) 2020 Marvell International Ltd.

 */



#ifndef __MACSEC_API_H__

#define __MACSEC_API_H__



#include "aq_hw.h"

#include "macsec_struct.h"



#define NUMROWS_EGRESSCTLFRECORD 24

#define ROWOFFSET_EGRESSCTLFRECORD 0



#define NUMROWS_EGRESSCLASSRECORD 48

#define ROWOFFSET_EGRESSCLASSRECORD 0



#define NUMROWS_EGRESSSCRECORD 32

#define ROWOFFSET_EGRESSSCRECORD 0



#define NUMROWS_EGRESSSARECORD 32

#define ROWOFFSET_EGRESSSARECORD 32



#define NUMROWS_EGRESSSAKEYRECORD 32

#define ROWOFFSET_EGRESSSAKEYRECORD 96



/*!  Read the raw table data from the specified row of the Egress CTL

 *   Filter table, and unpack it into the fields of rec.

 *  rec - [OUT] The raw table row data will be unpacked into the fields of rec.

 *  table_index - The table row to read (max 23).

 */

int aq_mss_get_egress_ctlf_record(struct aq_hw_s *hw,

				  struct aq_mss_egress_ctlf_record *rec,

				  u16 table_index);



/*!  Pack the fields of rec, and write the packed data into the

 *   specified row of the Egress CTL Filter table.

 *  rec - [IN] The bitfield values to write to the table row.

 *  table_index - The table row to write(max 23).

 */

int aq_mss_set_egress_ctlf_record(struct aq_hw_s *hw,

				  const struct aq_mss_egress_ctlf_record *rec,

				  u16 table_index);



/*!  Read the raw table data from the specified row of the Egress

 *   Packet Classifier table, and unpack it into the fields of rec.

 *  rec - [OUT] The raw table row data will be unpacked into the fields of rec.

 *  table_index - The table row to read (max 47).

 */

int aq_mss_get_egress_class_record(struct aq_hw_s *hw,

				   struct aq_mss_egress_class_record *rec,

				   u16 table_index);



/*!  Pack the fields of rec, and write the packed data into the

 *   specified row of the Egress Packet Classifier table.

 *  rec - [IN] The bitfield values to write to the table row.

 *  table_index - The table row to write (max 47).

 */

int aq_mss_set_egress_class_record(struct aq_hw_s *hw,

				   const struct aq_mss_egress_class_record *rec,

				   u16 table_index);



/*!  Read the raw table data from the specified row of the Egress SC

 *   Lookup table, and unpack it into the fields of rec.

 *  rec - [OUT] The raw table row data will be unpacked into the fields of rec.

 *  table_index - The table row to read (max 31).

 */

int aq_mss_get_egress_sc_record(struct aq_hw_s *hw,

				struct aq_mss_egress_sc_record *rec,

				u16 table_index);



/*!  Pack the fields of rec, and write the packed data into the

 *   specified row of the Egress SC Lookup table.

 *  rec - [IN] The bitfield values to write to the table row.

 *  table_index - The table row to write (max 31).

 */

int aq_mss_set_egress_sc_record(struct aq_hw_s *hw,

				const struct aq_mss_egress_sc_record *rec,

				u16 table_index);



/*!  Read the raw table data from the specified row of the Egress SA

 *   Lookup table, and unpack it into the fields of rec.

 *  rec - [OUT] The raw table row data will be unpacked into the fields of rec.

 *  table_index - The table row to read (max 31).

 */

int aq_mss_get_egress_sa_record(struct aq_hw_s *hw,

				struct aq_mss_egress_sa_record *rec,

				u16 table_index);



/*!  Pack the fields of rec, and write the packed data into the

 *   specified row of the Egress SA Lookup table.

 *  rec  - [IN] The bitfield values to write to the table row.

 *  table_index - The table row to write (max 31).

 */

int aq_mss_set_egress_sa_record(struct aq_hw_s *hw,

				const struct aq_mss_egress_sa_record *rec,

				u16 table_index);



/*!  Read the raw table data from the specified row of the Egress SA

 *   Key Lookup table, and unpack it into the fields of rec.

 *  rec - [OUT] The raw table row data will be unpacked into the fields of rec.

 *  table_index - The table row to read (max 31).

 */

int aq_mss_get_egress_sakey_record(struct aq_hw_s *hw,

				   struct aq_mss_egress_sakey_record *rec,

				   u16 table_index);



/*!  Pack the fields of rec, and write the packed data into the

 *   specified row of the Egress SA Key Lookup table.

 *  rec - [IN] The bitfield values to write to the table row.

 *  table_index - The table row to write (max 31).

 */

int aq_mss_set_egress_sakey_record(struct aq_hw_s *hw,

				   const struct aq_mss_egress_sakey_record *rec,

				   u16 table_index);



/*!  Get Egress SA expired. */

int aq_mss_get_egress_sa_expired(struct aq_hw_s *hw, u32 *expired);

/*!  Get Egress SA threshold expired. */

int aq_mss_get_egress_sa_threshold_expired(struct aq_hw_s *hw,

					   u32 *expired);

/*!  Set Egress SA expired. */

int aq_mss_set_egress_sa_expired(struct aq_hw_s *hw, u32 expired);

/*!  Set Egress SA threshold expired. */

int aq_mss_set_egress_sa_threshold_expired(struct aq_hw_s *hw,

					   u32 expired);



#endif /* __MACSEC_API_H__ */

drivers/net/ethernet/aquantia/atlantic/macsec/macsec_struct.h

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/* SPDX-License-Identifier: GPL-2.0-only */

/* Atlantic Network Driver

 * Copyright (C) 2020 Marvell International Ltd.

 */



#ifndef _MACSEC_STRUCT_H_

#define _MACSEC_STRUCT_H_



/*! Represents the bitfields of a single row in the Egress CTL Filter

 *  table.

 */

struct aq_mss_egress_ctlf_record {

	/*! This is used to store the 48 bit value used to compare SA, DA or

	 *  halfDA+half SA value.

	 */

	u32 sa_da[2];

	/*! This is used to store the 16 bit ethertype value used for

	 *  comparison.

	 */

	u32 eth_type;

	/*! The match mask is per-nibble. 0 means don't care, i.e. every value

	 *  will match successfully. The total data is 64 bit, i.e. 16 nibbles

	 *  masks.

	 */

	u32 match_mask;

	/*! 0: No compare, i.e. This entry is not used

	 *  1: compare DA only

	 *  2: compare SA only

	 *  3: compare half DA + half SA

	 *  4: compare ether type only

	 *  5: compare DA + ethertype

	 *  6: compare SA + ethertype

	 *  7: compare DA+ range.

	 */

	u32 match_type;

	/*! 0: Bypass the remaining modules if matched.

	 *  1: Forward to next module for more classifications.

	 */

	u32 action;

};



/*! Represents the bitfields of a single row in the Egress Packet

 *  Classifier table.

 */

struct aq_mss_egress_class_record {

	/*! VLAN ID field. */

	u32 vlan_id;

	/*! VLAN UP field. */

	u32 vlan_up;

	/*! VLAN Present in the Packet. */

	u32 vlan_valid;

	/*! The 8 bit value used to compare with extracted value for byte 3. */

	u32 byte3;

	/*! The 8 bit value used to compare with extracted value for byte 2. */

	u32 byte2;

	/*! The 8 bit value used to compare with extracted value for byte 1. */

	u32 byte1;

	/*! The 8 bit value used to compare with extracted value for byte 0. */

	u32 byte0;

	/*! The 8 bit TCI field used to compare with extracted value. */

	u32 tci;

	/*! The 64 bit SCI field in the SecTAG. */

	u32 sci[2];

	/*! The 16 bit Ethertype (in the clear) field used to compare with

	 *  extracted value.

	 */

	u32 eth_type;

	/*! This is to specify the 40bit SNAP header if the SNAP header's mask

	 *  is enabled.

	 */

	u32 snap[2];

	/*! This is to specify the 24bit LLC header if the LLC header's mask is

	 *  enabled.

	 */

	u32 llc;

	/*! The 48 bit MAC_SA field used to compare with extracted value. */

	u32 mac_sa[2];

	/*! The 48 bit MAC_DA field used to compare with extracted value. */

	u32 mac_da[2];

	/*! The 32 bit Packet number used to compare with extracted value. */

	u32 pn;

	/*! 0~63: byte location used extracted by packets comparator, which

	 *  can be anything from the first 64 bytes of the MAC packets.

	 *  This byte location counted from MAC' DA address. i.e. set to 0

	 *  will point to byte 0 of DA address.

	 */

	u32 byte3_location;

	/*! 0: don't care

	 *  1: enable comparison of extracted byte pointed by byte 3 location.

	 */

	u32 byte3_mask;

	/*! 0~63: byte location used extracted by packets comparator, which

	 *  can be anything from the first 64 bytes of the MAC packets.

	 *  This byte location counted from MAC' DA address. i.e. set to 0

	 *  will point to byte 0 of DA address.

	 */

	u32 byte2_location;

	/*! 0: don't care

	 *  1: enable comparison of extracted byte pointed by byte 2 location.

	 */

	u32 byte2_mask;

	/*! 0~63: byte location used extracted by packets comparator, which

	 *  can be anything from the first 64 bytes of the MAC packets.

	 *  This byte location counted from MAC' DA address. i.e. set to 0

	 *  will point to byte 0 of DA address.

	 */

	u32 byte1_location;

	/*! 0: don't care

	 *  1: enable comparison of extracted byte pointed by byte 1 location.

	 */

	u32 byte1_mask;

	/*! 0~63: byte location used extracted by packets comparator, which

	 *  can be anything from the first 64 bytes of the MAC packets.

	 *  This byte location counted from MAC' DA address. i.e. set to 0

	 *  will point to byte 0 of DA address.

	 */

	u32 byte0_location;

	/*! 0: don't care

	 *  1: enable comparison of extracted byte pointed by byte 0 location.

	 */

	u32 byte0_mask;

	/*! Mask is per-byte.

	 *  0: don't care

	 *  1: enable comparison of extracted VLAN ID field.

	 */

	u32 vlan_id_mask;

	/*! 0: don't care

	 *  1: enable comparison of extracted VLAN UP field.

	 */

	u32 vlan_up_mask;

	/*! 0: don't care

	 *  1: enable comparison of extracted VLAN Valid field.

	 */

	u32 vlan_valid_mask;

	/*! This is bit mask to enable comparison the 8 bit TCI field,

	 *  including the AN field.

	 *  For explicit SECTAG, AN is hardware controlled. For sending

	 *  packet w/ explicit SECTAG, rest of the TCI fields are directly

	 *  from the SECTAG.

	 */

	u32 tci_mask;

	/*! Mask is per-byte.

	 *  0: don't care

	 *  1: enable comparison of SCI

	 *  Note: If this field is not 0, this means the input packet's

	 *  SECTAG is explicitly tagged and MACSEC module will only update

	 *  the MSDU.

	 *  PN number is hardware controlled.

	 */

	u32 sci_mask;

	/*! Mask is per-byte.

	 *  0: don't care

	 *  1: enable comparison of Ethertype.

	 */

	u32 eth_type_mask;

	/*! Mask is per-byte.

	 *  0: don't care and no SNAP header exist.

	 *  1: compare the SNAP header.

	 *  If this bit is set to 1, the extracted filed will assume the

	 *  SNAP header exist as encapsulated in 802.3 (RFC 1042). I.E. the

	 *  next 5 bytes after the the LLC header is SNAP header.

	 */

	u32 snap_mask;

	/*! 0: don't care and no LLC header exist.

	 *  1: compare the LLC header.

	 *  If this bit is set to 1, the extracted filed will assume the

	 *  LLC header exist as encapsulated in 802.3 (RFC 1042). I.E. the

	 *  next three bytes after the 802.3MAC header is LLC header.

	 */

	u32 llc_mask;

	/*! Mask is per-byte.

	 *  0: don't care

	 *  1: enable comparison of MAC_SA.

	 */

	u32 sa_mask;

	/*! Mask is per-byte.

	 *  0: don't care

	 *  1: enable comparison of MAC_DA.

	 */

	u32 da_mask;

	/*! Mask is per-byte. */

	u32 pn_mask;

	/*! Reserved. This bit should be always 0. */

	u32 eight02dot2;

	/*! 1: For explicit sectag case use TCI_SC from table

	 *  0: use TCI_SC from explicit sectag.

	 */

	u32 tci_sc;

	/*! 1: For explicit sectag case,use TCI_V,ES,SCB,E,C from table

	 *  0: use TCI_V,ES,SCB,E,C from explicit sectag.

	 */

	u32 tci_87543;

	/*! 1: indicates that incoming packet has explicit sectag. */

	u32 exp_sectag_en;

	/*! If packet matches and tagged as controlled-packet, this SC/SA

	 *  index is used for later SC and SA table lookup.

	 */

	u32 sc_idx;

	/*! This field is used to specify how many SA entries are

	 *  associated with 1 SC entry.

	 *  2'b00: 1 SC has 4 SA.

	 *  SC index is equivalent to {SC_Index[4:2], 1'b0}.

	 *  SA index is equivalent to {SC_Index[4:2], SC entry's current AN[1:0]

	 *  2'b10: 1 SC has 2 SA.

	 *  SC index is equivalent to SC_Index[4:1]

	 *  SA index is equivalent to {SC_Index[4:1], SC entry's current AN[0]}

	 *  2'b11: 1 SC has 1 SA. No SC entry exists for the specific SA.

	 *  SA index is equivalent to SC_Index[4:0]

	 *  Note: if specified as 2'b11, hardware AN roll over is not

	 *  supported.

	 */

	u32 sc_sa;

	/*! 0: the packets will be sent to MAC FIFO

	 *  1: The packets will be sent to Debug/Loopback FIFO.

	 *  If the above's action is drop, this bit has no meaning.

	 */

	u32 debug;

	/*! 0: forward to remaining modules

	 *  1: bypass the next encryption modules. This packet is considered

	 *     un-control packet.

	 *  2: drop

	 *  3: Reserved.

	 */

	u32 action;

	/*! 0: Not valid entry. This entry is not used

	 *  1: valid entry.

	 */

	u32 valid;

};



/*! Represents the bitfields of a single row in the Egress SC Lookup table. */

struct aq_mss_egress_sc_record {

	/*! This is to specify when the SC was first used. Set by HW. */

	u32 start_time;

	/*! This is to specify when the SC was last used. Set by HW. */

	u32 stop_time;

	/*! This is to specify which of the SA entries are used by current HW.

	 *  Note: This value need to be set by SW after reset.  It will be

	 *  automatically updated by HW, if AN roll over is enabled.

	 */

	u32 curr_an;

	/*! 0: Clear the SA Valid Bit after PN expiry.

	 *  1: Do not Clear the SA Valid bit after PN expiry of the current SA.

	 *  When the Enable AN roll over is set, S/W does not need to

	 *  program the new SA's and the H/W will automatically roll over

	 *  between the SA's without session expiry.

	 *  For normal operation, Enable AN Roll over will be set to '0'

	 *  and in which case, the SW needs to program the new SA values

	 *  after the current PN expires.

	 */

	u32 an_roll;

	/*! This is the TCI field used if packet is not explicitly tagged. */

	u32 tci;

	/*! This value indicates the offset where the decryption will start.

	 *  [[Values of 0, 4, 8-50].

	 */

	u32 enc_off;

	/*! 0: Do not protect frames, all the packets will be forwarded

	 *     unchanged. MIB counter (OutPktsUntagged) will be updated.

	 *  1: Protect.

	 */

	u32 protect;

	/*! 0: when none of the SA related to SC has inUse set.

	 *  1: when either of the SA related to the SC has inUse set.

	 *  This bit is set by HW.

	 */

	u32 recv;

	/*! 0: H/W Clears this bit on the first use.

	 *  1: SW updates this entry, when programming the SC Table.

	 */

	u32 fresh;

	/*! AES Key size

	 *  00 - 128bits

	 *  01 - 192bits

	 *  10 - 256bits

	 *  11 - Reserved.

	 */

	u32 sak_len;

	/*! 0: Invalid SC

	 *  1: Valid SC.

	 */

	u32 valid;

};



/*! Represents the bitfields of a single row in the Egress SA Lookup table. */

struct aq_mss_egress_sa_record {

	/*! This is to specify when the SC was first used. Set by HW. */

	u32 start_time;

	/*! This is to specify when the SC was last used. Set by HW. */

	u32 stop_time;

	/*! This is set by SW and updated by HW to store the Next PN number

	 *  used for encryption.

	 */

	u32 next_pn;

	/*! The Next_PN number is going to wrapped around from 0xFFFF_FFFF

	 *  to 0. set by HW.

	 */

	u32 sat_pn;

	/*! 0: This SA is in use.

	 *  1: This SA is Fresh and set by SW.

	 */

	u32 fresh;

	/*! 0: Invalid SA

	 *  1: Valid SA.

	 */

	u32 valid;

};



/*! Represents the bitfields of a single row in the Egress SA Key

 *  Lookup table.

 */

struct aq_mss_egress_sakey_record {

	/*! Key for AES-GCM processing. */

	u32 key[8];

};



#endif