FILE
fdls_fc.h

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linux-6.19.14/drivers/scsi/fnic/fdls_fc.h C
  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
  4 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
  5 */
  6
  7#ifndef _FDLS_FC_H_
  8#define _FDLS_FC_H_
  9
 10/* This file contains the declarations for FC fabric services
 11 * and target discovery
 12 *
 13 * Request and Response for
 14 * 1. FLOGI
 15 * 2. PLOGI to Fabric Controller
 16 * 3. GPN_ID, GPN_FT
 17 * 4. RSCN
 18 * 5. PLOGI to Target
 19 * 6. PRLI to Target
 20 */
 21
 22#include <scsi/scsi.h>
 23#include <scsi/fc/fc_els.h>
 24#include <uapi/scsi/fc/fc_fs.h>
 25#include <uapi/scsi/fc/fc_ns.h>
 26#include <uapi/scsi/fc/fc_gs.h>
 27#include <uapi/linux/if_ether.h>
 28#include <scsi/fc/fc_ms.h>
 29#include <linux/minmax.h>
 30#include <linux/if_ether.h>
 31#include <scsi/fc/fc_encaps.h>
 32#include <scsi/fc/fc_fcoe.h>
 33
 34#define FDLS_MIN_FRAMES	(32)
 35#define FDLS_MIN_FRAME_ELEM	(4)
 36#define FNIC_FCP_SP_RD_XRDY_DIS 0x00000002
 37#define FNIC_FCP_SP_TARGET      0x00000010
 38#define FNIC_FCP_SP_INITIATOR   0x00000020
 39#define FNIC_FCP_SP_CONF_CMPL   0x00000080
 40#define FNIC_FCP_SP_RETRY       0x00000100
 41
 42#define FNIC_FC_CONCUR_SEQS    (0xFF)
 43#define FNIC_FC_RO_INFO        (0x1F)
 44
 45/* Little Endian */
 46#define FNIC_UNASSIGNED_OXID	(0xffff)
 47#define FNIC_UNASSIGNED_RXID	(0xffff)
 48#define FNIC_ELS_REQ_FCTL      (0x000029)
 49#define FNIC_ELS_REP_FCTL      (0x000099)
 50
 51#define FNIC_FCP_RSP_FCTL      (0x000099)
 52#define FNIC_REQ_ABTS_FCTL     (0x000009)
 53
 54#define FNIC_FC_PH_VER_HI      (0x20)
 55#define FNIC_FC_PH_VER_LO      (0x20)
 56#define FNIC_FC_PH_VER         (0x2020)
 57#define FNIC_FC_B2B_CREDIT     (0x0A)
 58#define FNIC_FC_B2B_RDF_SZ     (0x0800)
 59
 60#define FNIC_LOGI_RDF_SIZE(_logi) ((_logi).fl_csp.sp_bb_data)
 61#define FNIC_LOGI_R_A_TOV(_logi) ((_logi).fl_csp.sp_r_a_tov)
 62#define FNIC_LOGI_E_D_TOV(_logi) ((_logi).fl_csp.sp_e_d_tov)
 63#define FNIC_LOGI_FEATURES(_logi) (be16_to_cpu((_logi).fl_csp.sp_features))
 64#define FNIC_LOGI_PORT_NAME(_logi) ((_logi).fl_wwpn)
 65#define FNIC_LOGI_NODE_NAME(_logi) ((_logi).fl_wwnn)
 66
 67#define FNIC_LOGI_SET_RDF_SIZE(_logi, _rdf_size) \
 68	(FNIC_LOGI_RDF_SIZE(_logi) = cpu_to_be16(_rdf_size))
 69#define FNIC_LOGI_SET_E_D_TOV(_logi, _e_d_tov) \
 70	(FNIC_LOGI_E_D_TOV(_logi) = cpu_to_be32(_e_d_tov))
 71#define FNIC_LOGI_SET_R_A_TOV(_logi, _r_a_tov) \
 72	(FNIC_LOGI_R_A_TOV(_logi) = cpu_to_be32(_r_a_tov))
 73
 74#define FNIC_STD_SET_S_ID(_fchdr, _sid)        memcpy((_fchdr).fh_s_id, _sid, 3)
 75#define FNIC_STD_SET_D_ID(_fchdr, _did)        memcpy((_fchdr).fh_d_id, _did, 3)
 76#define FNIC_STD_SET_OX_ID(_fchdr, _oxid)      ((_fchdr).fh_ox_id = cpu_to_be16(_oxid))
 77#define FNIC_STD_SET_RX_ID(_fchdr, _rxid)      ((_fchdr).fh_rx_id = cpu_to_be16(_rxid))
 78
 79#define FNIC_STD_SET_R_CTL(_fchdr, _rctl)	((_fchdr).fh_r_ctl = _rctl)
 80#define FNIC_STD_SET_TYPE(_fchdr, _type)	((_fchdr).fh_type = _type)
 81#define FNIC_STD_SET_F_CTL(_fchdr, _fctl) \
 82	put_unaligned_be24(_fctl, &((_fchdr).fh_f_ctl))
 83
 84#define FNIC_STD_SET_NPORT_NAME(_ptr, _wwpn)	put_unaligned_be64(_wwpn, _ptr)
 85#define FNIC_STD_SET_NODE_NAME(_ptr, _wwnn)	put_unaligned_be64(_wwnn, _ptr)
 86#define FNIC_STD_SET_PORT_ID(__req, __portid) \
 87	memcpy(__req.fr_fid.fp_fid, __portid, 3)
 88#define FNIC_STD_SET_PORT_NAME(_req, _pName) \
 89	(put_unaligned_be64(_pName, &_req.fr_wwn))
 90
 91#define FNIC_STD_GET_OX_ID(_fchdr)		(be16_to_cpu((_fchdr)->fh_ox_id))
 92#define FNIC_STD_GET_RX_ID(_fchdr)		(be16_to_cpu((_fchdr)->fh_rx_id))
 93#define FNIC_STD_GET_S_ID(_fchdr)		((_fchdr)->fh_s_id)
 94#define FNIC_STD_GET_D_ID(_fchdr)		((_fchdr)->fh_d_id)
 95#define FNIC_STD_GET_TYPE(_fchdr)		((_fchdr)->fh_type)
 96#define FNIC_STD_GET_F_CTL(_fchdr)		((_fchdr)->fh_f_ctl)
 97#define FNIC_STD_GET_R_CTL(_fchdr)		((_fchdr)->fh_r_ctl)
 98
 99#define FNIC_STD_GET_FC_CT_CMD(__fcct_hdr)  (be16_to_cpu(__fcct_hdr->ct_cmd))
100
101#define FNIC_FCOE_MAX_FRAME_SZ  (2048)
102#define FNIC_FCOE_MIN_FRAME_SZ  (280)
103#define FNIC_FC_MAX_PAYLOAD_LEN (2048)
104#define FNIC_MIN_DATA_FIELD_SIZE  (256)
105
106#define FNIC_FC_EDTOV_NSEC    (0x400)
107#define FNIC_NSEC_TO_MSEC     (0x1000000)
108#define FCP_PRLI_FUNC_TARGET	(0x0010)
109
110#define FNIC_FC_R_CTL_SOLICITED_DATA			(0x21)
111#define FNIC_FC_F_CTL_LAST_END_SEQ				(0x98)
112#define FNIC_FC_F_CTL_LAST_END_SEQ_INT			(0x99)
113#define FNIC_FC_F_CTL_FIRST_LAST_SEQINIT		(0x29)
114#define FNIC_FC_R_CTL_FC4_SCTL					(0x03)
115#define FNIC_FC_CS_CTL							(0x00)
116
117#define FNIC_FC_FRAME_UNSOLICITED(_fchdr)				\
118		(_fchdr->fh_r_ctl == FC_RCTL_ELS_REQ)
119#define FNIC_FC_FRAME_SOLICITED_DATA(_fchdr)			\
120		(_fchdr->fh_r_ctl == FNIC_FC_R_CTL_SOLICITED_DATA)
121#define FNIC_FC_FRAME_SOLICITED_CTRL_REPLY(_fchdr)		\
122		(_fchdr->fh_r_ctl == FC_RCTL_ELS_REP)
123#define FNIC_FC_FRAME_FCTL_LAST_END_SEQ(_fchdr)			\
124		(_fchdr->fh_f_ctl[0] == FNIC_FC_F_CTL_LAST_END_SEQ)
125#define FNIC_FC_FRAME_FCTL_LAST_END_SEQ_INT(_fchdr)		\
126		(_fchdr->fh_f_ctl[0] == FNIC_FC_F_CTL_LAST_END_SEQ_INT)
127#define FNIC_FC_FRAME_FCTL_FIRST_LAST_SEQINIT(_fchdr)	\
128		(_fchdr->fh_f_ctl[0] == FNIC_FC_F_CTL_FIRST_LAST_SEQINIT)
129#define FNIC_FC_FRAME_FC4_SCTL(_fchdr)					\
130		(_fchdr->fh_r_ctl == FNIC_FC_R_CTL_FC4_SCTL)
131#define FNIC_FC_FRAME_TYPE_BLS(_fchdr) (_fchdr->fh_type == FC_TYPE_BLS)
132#define FNIC_FC_FRAME_TYPE_ELS(_fchdr) (_fchdr->fh_type == FC_TYPE_ELS)
133#define FNIC_FC_FRAME_TYPE_FC_GS(_fchdr) (_fchdr->fh_type == FC_TYPE_CT)
134#define FNIC_FC_FRAME_CS_CTL(_fchdr) (_fchdr->fh_cs_ctl == FNIC_FC_CS_CTL)
135
136#define FNIC_FC_C3_RDF         (0xfff)
137#define FNIC_FC_PLOGI_RSP_RDF(_plogi_rsp) \
138	(min(_plogi_rsp->u.csp_plogi.b2b_rdf_size, \
139	(_plogi_rsp->spc3[4] & FNIC_FC_C3_RDF)))
140#define FNIC_FC_PLOGI_RSP_CONCUR_SEQ(_plogi_rsp) \
141	(min((uint16_t) (be16_to_cpu(_plogi_rsp->els.fl_csp.sp_tot_seq)), \
142	 (uint16_t) (be16_to_cpu(_plogi_rsp->els.fl_cssp[2].cp_con_seq) & 0xff)))
143
144/* FLOGI/PLOGI struct */
145struct fc_std_flogi {
146	struct fc_frame_header fchdr;
147	struct fc_els_flogi els;
148} __packed;
149
150struct fc_std_els_acc_rsp {
151	struct fc_frame_header fchdr;
152	struct fc_els_ls_acc acc;
153} __packed;
154
155struct fc_std_els_rjt_rsp {
156	struct fc_frame_header fchdr;
157	struct fc_els_ls_rjt rej;
158} __packed;
159
160struct fc_std_els_adisc {
161	struct fc_frame_header fchdr;
162	struct fc_els_adisc els;
163} __packed;
164
165struct fc_std_rls_acc {
166	struct fc_frame_header fchdr;
167	struct fc_els_rls_resp els;
168} __packed;
169
170struct fc_std_abts_ba_acc {
171	struct fc_frame_header fchdr;
172	struct fc_ba_acc acc;
173} __packed;
174
175struct fc_std_abts_ba_rjt {
176	struct fc_frame_header fchdr;
177	struct fc_ba_rjt rjt;
178} __packed;
179
180struct fc_std_els_prli {
181	struct fc_frame_header fchdr;
182	struct fc_els_prli els_prli;
183	struct fc_els_spp sp;
184}	 __packed;
185
186struct fc_std_rpn_id {
187	struct fc_frame_header fchdr;
188	struct fc_ct_hdr fc_std_ct_hdr;
189	struct fc_ns_rn_id rpn_id;
190} __packed;
191
192struct fc_std_fdmi_rhba {
193	struct fc_frame_header fchdr;
194	struct fc_ct_hdr fc_std_ct_hdr;
195	struct fc_fdmi_rhba rhba;
196} __packed;
197
198struct fc_std_fdmi_rpa {
199	struct fc_frame_header fchdr;
200	struct fc_ct_hdr fc_std_ct_hdr;
201	struct fc_fdmi_rpa rpa;
202}	 __packed;
203
204struct fc_std_rft_id {
205	struct fc_frame_header fchdr;
206	struct fc_ct_hdr fc_std_ct_hdr;
207	struct fc_ns_rft_id rft_id;
208} __packed;
209
210struct fc_std_rff_id {
211	struct fc_frame_header fchdr;
212	struct fc_ct_hdr fc_std_ct_hdr;
213	struct fc_ns_rff_id rff_id;
214} __packed;
215
216struct fc_std_gpn_ft {
217	struct fc_frame_header fchdr;
218	struct fc_ct_hdr fc_std_ct_hdr;
219	struct fc_ns_gid_ft gpn_ft;
220} __packed;
221
222/* Accept CT_IU	for	GPN_FT	*/
223struct fc_gpn_ft_rsp_iu {
224	uint8_t		ctrl;
225	uint8_t		fcid[3];
226	uint32_t	rsvd;
227	__be64		wwpn;
228} __packed;
229
230struct fc_std_rls {
231	struct fc_frame_header fchdr;
232	struct fc_els_rls els;
233} __packed;
234
235struct fc_std_scr {
236	struct fc_frame_header fchdr;
237	struct fc_els_scr scr;
238} __packed;
239
240struct fc_std_rscn {
241	struct fc_frame_header fchdr;
242	struct fc_els_rscn els;
243} __packed;
244
245struct fc_std_logo {
246	struct fc_frame_header fchdr;
247	struct fc_els_logo els;
248} __packed;
249
250#define	FNIC_ETH_FCOE_HDRS_OFFSET	\
251	(sizeof(struct ethhdr) + sizeof(struct fcoe_hdr))
252
253#endif	/*	_FDLS_FC_H	*/
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