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Message-ID: <20241206210852.3251-3-kartilak@cisco.com>
Date: Fri, 6 Dec 2024 13:08:39 -0800
From: Karan Tilak Kumar <kartilak@...co.com>
To: sebaddel@...co.com
Cc: arulponn@...co.com,
djhawar@...co.com,
gcboffa@...co.com,
mkai2@...co.com,
satishkh@...co.com,
aeasi@...co.com,
jejb@...ux.ibm.com,
martin.petersen@...cle.com,
linux-scsi@...r.kernel.org,
linux-kernel@...r.kernel.org,
Karan Tilak Kumar <kartilak@...co.com>
Subject: [PATCH v6 02/15] scsi: fnic: Add headers and definitions for FDLS
Add headers and definitions for FDLS (Fabric Discovery and Login
Services).
Reviewed-by: Sesidhar Baddela <sebaddel@...co.com>
Co-developed-by: Gian Carlo Boffa <gcboffa@...co.com>
Signed-off-by: Gian Carlo Boffa <gcboffa@...co.com>
Co-developed-by: Arulprabhu Ponnusamy <arulponn@...co.com>
Signed-off-by: Arulprabhu Ponnusamy <arulponn@...co.com>
Co-developed-by: Arun Easi <aeasi@...co.com>
Signed-off-by: Arun Easi <aeasi@...co.com>
Co-developed-by: Karan Tilak Kumar <kartilak@...co.com>
Signed-off-by: Karan Tilak Kumar <kartilak@...co.com>
---
Changes between v5 and v6:
Rebase to 6.14/scsi-queue.
Incorporate review comments from Martin:
Remove GCC 13.3 warnings.
Incorporate review comments from Hannes:
Replace custom definitions with standard definitions.
Remove FDMI macro definitions.
Replace FDMI with standard FDMI definition.
Changes between v4 and v5:
Incorporate review comments from Martin:
Remove newline at the end of fnic_fdls.h.
Modify attribution appropriately.
Changes between v2 and v3:
Incorporate review comments from Hannes:
Replace redundant structure definitions with standard
definitions.
Remove multiple endian macro copies.
Remove static OXIDs macro definitions.
Changes between v1 and v2:
Incorporate review comments from Hannes:
Remove redundant patch description.
Replace htonll() with get_unaligned_be64().
Replace raw values with macro names.
Remove fnic_del_fabric_timer_sync macro.
Remove fnic_del_tport_timer_sync macro.
Add fnic_del_fabric_timer_sync function declaration.
Add fnic_del_tport_timer_sync function declaration.
Replace definitions with standard definitions from fc_els.h.
Move FDMI function declaration to this patch.
Incorporate review comments from John:
Replace int return value with void.
---
drivers/scsi/fnic/fdls_fc.h | 253 ++++++++++++++++++++
drivers/scsi/fnic/fnic_fdls.h | 433 ++++++++++++++++++++++++++++++++++
2 files changed, 686 insertions(+)
create mode 100644 drivers/scsi/fnic/fdls_fc.h
create mode 100644 drivers/scsi/fnic/fnic_fdls.h
diff --git a/drivers/scsi/fnic/fdls_fc.h b/drivers/scsi/fnic/fdls_fc.h
new file mode 100644
index 000000000000..012f43afd083
--- /dev/null
+++ b/drivers/scsi/fnic/fdls_fc.h
@@ -0,0 +1,253 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2008 Cisco Systems, Inc. All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc. All rights reserved.
+ */
+
+#ifndef _FDLS_FC_H_
+#define _FDLS_FC_H_
+
+/* This file contains the declarations for FC fabric services
+ * and target discovery
+ *
+ * Request and Response for
+ * 1. FLOGI
+ * 2. PLOGI to Fabric Controller
+ * 3. GPN_ID, GPN_FT
+ * 4. RSCN
+ * 5. PLOGI to Target
+ * 6. PRLI to Target
+ */
+
+#include <scsi/scsi.h>
+#include <scsi/fc/fc_els.h>
+#include <uapi/scsi/fc/fc_fs.h>
+#include <uapi/scsi/fc/fc_ns.h>
+#include <uapi/scsi/fc/fc_gs.h>
+#include <uapi/linux/if_ether.h>
+#include <scsi/fc/fc_ms.h>
+#include <linux/minmax.h>
+#include <linux/if_ether.h>
+#include <scsi/fc/fc_encaps.h>
+#include <scsi/fc/fc_fcoe.h>
+
+#define FDLS_MIN_FRAMES (32)
+#define FDLS_MIN_FRAME_ELEM (4)
+#define FNIC_FCP_SP_RD_XRDY_DIS 0x00000002
+#define FNIC_FCP_SP_TARGET 0x00000010
+#define FNIC_FCP_SP_INITIATOR 0x00000020
+#define FNIC_FCP_SP_CONF_CMPL 0x00000080
+#define FNIC_FCP_SP_RETRY 0x00000100
+
+#define FNIC_FC_CONCUR_SEQS (0xFF)
+#define FNIC_FC_RO_INFO (0x1F)
+
+/* Little Endian */
+#define FNIC_UNASSIGNED_OXID (0xffff)
+#define FNIC_UNASSIGNED_RXID (0xffff)
+#define FNIC_ELS_REQ_FCTL (0x000029)
+#define FNIC_ELS_REP_FCTL (0x000099)
+
+#define FNIC_FCP_RSP_FCTL (0x000099)
+#define FNIC_REQ_ABTS_FCTL (0x000009)
+
+#define FNIC_FC_PH_VER_HI (0x20)
+#define FNIC_FC_PH_VER_LO (0x20)
+#define FNIC_FC_PH_VER (0x2020)
+#define FNIC_FC_B2B_CREDIT (0x0A)
+#define FNIC_FC_B2B_RDF_SZ (0x0800)
+
+#define FNIC_LOGI_RDF_SIZE(_logi) ((_logi).fl_csp.sp_bb_data)
+#define FNIC_LOGI_R_A_TOV(_logi) ((_logi).fl_csp.sp_r_a_tov)
+#define FNIC_LOGI_E_D_TOV(_logi) ((_logi).fl_csp.sp_e_d_tov)
+#define FNIC_LOGI_FEATURES(_logi) (be16_to_cpu((_logi).fl_csp.sp_features))
+#define FNIC_LOGI_PORT_NAME(_logi) ((_logi).fl_wwpn)
+#define FNIC_LOGI_NODE_NAME(_logi) ((_logi).fl_wwnn)
+
+#define FNIC_LOGI_SET_RDF_SIZE(_logi, _rdf_size) \
+ (FNIC_LOGI_RDF_SIZE(_logi) = cpu_to_be16(_rdf_size))
+#define FNIC_LOGI_SET_E_D_TOV(_logi, _e_d_tov) \
+ (FNIC_LOGI_E_D_TOV(_logi) = cpu_to_be32(_e_d_tov))
+#define FNIC_LOGI_SET_R_A_TOV(_logi, _r_a_tov) \
+ (FNIC_LOGI_R_A_TOV(_logi) = cpu_to_be32(_r_a_tov))
+
+#define FNIC_STD_SET_S_ID(_fchdr, _sid) memcpy((_fchdr).fh_s_id, _sid, 3)
+#define FNIC_STD_SET_D_ID(_fchdr, _did) memcpy((_fchdr).fh_d_id, _did, 3)
+#define FNIC_STD_SET_OX_ID(_fchdr, _oxid) ((_fchdr).fh_ox_id = cpu_to_be16(_oxid))
+#define FNIC_STD_SET_RX_ID(_fchdr, _rxid) ((_fchdr).fh_rx_id = cpu_to_be16(_rxid))
+
+#define FNIC_STD_SET_R_CTL(_fchdr, _rctl) ((_fchdr).fh_r_ctl = _rctl)
+#define FNIC_STD_SET_TYPE(_fchdr, _type) ((_fchdr).fh_type = _type)
+#define FNIC_STD_SET_F_CTL(_fchdr, _fctl) \
+ put_unaligned_be24(_fctl, &((_fchdr).fh_f_ctl))
+
+#define FNIC_STD_SET_NPORT_NAME(_ptr, _wwpn) put_unaligned_be64(_wwpn, _ptr)
+#define FNIC_STD_SET_NODE_NAME(_ptr, _wwnn) put_unaligned_be64(_wwnn, _ptr)
+#define FNIC_STD_SET_PORT_ID(__req, __portid) \
+ memcpy(__req.fr_fid.fp_fid, __portid, 3)
+#define FNIC_STD_SET_PORT_NAME(_req, _pName) \
+ (put_unaligned_be64(_pName, &_req.fr_wwn))
+
+#define FNIC_STD_GET_OX_ID(_fchdr) (be16_to_cpu((_fchdr)->fh_ox_id))
+#define FNIC_STD_GET_RX_ID(_fchdr) (be16_to_cpu((_fchdr)->fh_rx_id))
+#define FNIC_STD_GET_S_ID(_fchdr) ((_fchdr)->fh_s_id)
+#define FNIC_STD_GET_D_ID(_fchdr) ((_fchdr)->fh_d_id)
+#define FNIC_STD_GET_TYPE(_fchdr) ((_fchdr)->fh_type)
+#define FNIC_STD_GET_F_CTL(_fchdr) ((_fchdr)->fh_f_ctl)
+#define FNIC_STD_GET_R_CTL(_fchdr) ((_fchdr)->fh_r_ctl)
+
+#define FNIC_STD_GET_FC_CT_CMD(__fcct_hdr) (be16_to_cpu(__fcct_hdr->ct_cmd))
+
+#define FNIC_FCOE_MAX_FRAME_SZ (2048)
+#define FNIC_FCOE_MIN_FRAME_SZ (280)
+#define FNIC_FC_MAX_PAYLOAD_LEN (2048)
+#define FNIC_MIN_DATA_FIELD_SIZE (256)
+
+#define FNIC_FC_EDTOV_NSEC (0x400)
+#define FNIC_NSEC_TO_MSEC (0x1000000)
+#define FCP_PRLI_FUNC_TARGET (0x0010)
+
+#define FNIC_FC_R_CTL_SOLICITED_DATA (0x21)
+#define FNIC_FC_F_CTL_LAST_END_SEQ (0x98)
+#define FNIC_FC_F_CTL_LAST_END_SEQ_INT (0x99)
+#define FNIC_FC_F_CTL_FIRST_LAST_SEQINIT (0x29)
+#define FNIC_FC_R_CTL_FC4_SCTL (0x03)
+#define FNIC_FC_CS_CTL (0x00)
+
+#define FNIC_FC_FRAME_UNSOLICITED(_fchdr) \
+ (_fchdr->fh_r_ctl == FC_RCTL_ELS_REQ)
+#define FNIC_FC_FRAME_SOLICITED_DATA(_fchdr) \
+ (_fchdr->fh_r_ctl == FNIC_FC_R_CTL_SOLICITED_DATA)
+#define FNIC_FC_FRAME_SOLICITED_CTRL_REPLY(_fchdr) \
+ (_fchdr->fh_r_ctl == FC_RCTL_ELS_REP)
+#define FNIC_FC_FRAME_FCTL_LAST_END_SEQ(_fchdr) \
+ (_fchdr->fh_f_ctl[0] == FNIC_FC_F_CTL_LAST_END_SEQ)
+#define FNIC_FC_FRAME_FCTL_LAST_END_SEQ_INT(_fchdr) \
+ (_fchdr->fh_f_ctl[0] == FNIC_FC_F_CTL_LAST_END_SEQ_INT)
+#define FNIC_FC_FRAME_FCTL_FIRST_LAST_SEQINIT(_fchdr) \
+ (_fchdr->fh_f_ctl[0] == FNIC_FC_F_CTL_FIRST_LAST_SEQINIT)
+#define FNIC_FC_FRAME_FC4_SCTL(_fchdr) \
+ (_fchdr->fh_r_ctl == FNIC_FC_R_CTL_FC4_SCTL)
+#define FNIC_FC_FRAME_TYPE_BLS(_fchdr) (_fchdr->fh_type == FC_TYPE_BLS)
+#define FNIC_FC_FRAME_TYPE_ELS(_fchdr) (_fchdr->fh_type == FC_TYPE_ELS)
+#define FNIC_FC_FRAME_TYPE_FC_GS(_fchdr) (_fchdr->fh_type == FC_TYPE_CT)
+#define FNIC_FC_FRAME_CS_CTL(_fchdr) (_fchdr->fh_cs_ctl == FNIC_FC_CS_CTL)
+
+#define FNIC_FC_C3_RDF (0xfff)
+#define FNIC_FC_PLOGI_RSP_RDF(_plogi_rsp) \
+ (min(_plogi_rsp->u.csp_plogi.b2b_rdf_size, \
+ (_plogi_rsp->spc3[4] & FNIC_FC_C3_RDF)))
+#define FNIC_FC_PLOGI_RSP_CONCUR_SEQ(_plogi_rsp) \
+ (min((uint16_t) (be16_to_cpu(_plogi_rsp->els.fl_csp.sp_tot_seq)), \
+ (uint16_t) (be16_to_cpu(_plogi_rsp->els.fl_cssp[2].cp_con_seq) & 0xff)))
+
+/* FLOGI/PLOGI struct */
+struct fc_std_flogi {
+ struct fc_frame_header fchdr;
+ struct fc_els_flogi els;
+} __packed;
+
+struct fc_std_els_acc_rsp {
+ struct fc_frame_header fchdr;
+ struct fc_els_ls_acc acc;
+} __packed;
+
+struct fc_std_els_rjt_rsp {
+ struct fc_frame_header fchdr;
+ struct fc_els_ls_rjt rej;
+} __packed;
+
+struct fc_std_els_adisc {
+ struct fc_frame_header fchdr;
+ struct fc_els_adisc els;
+} __packed;
+
+struct fc_std_rls_acc {
+ struct fc_frame_header fchdr;
+ struct fc_els_rls_resp els;
+} __packed;
+
+struct fc_std_abts_ba_acc {
+ struct fc_frame_header fchdr;
+ struct fc_ba_acc acc;
+} __packed;
+
+struct fc_std_abts_ba_rjt {
+ struct fc_frame_header fchdr;
+ struct fc_ba_rjt rjt;
+} __packed;
+
+struct fc_std_els_prli {
+ struct fc_frame_header fchdr;
+ struct fc_els_prli els_prli;
+ struct fc_els_spp sp;
+} __packed;
+
+struct fc_std_rpn_id {
+ struct fc_frame_header fchdr;
+ struct fc_ct_hdr fc_std_ct_hdr;
+ struct fc_ns_rn_id rpn_id;
+} __packed;
+
+struct fc_std_fdmi_rhba {
+ struct fc_frame_header fchdr;
+ struct fc_ct_hdr fc_std_ct_hdr;
+ struct fc_fdmi_rhba rhba;
+} __packed;
+
+struct fc_std_fdmi_rpa {
+ struct fc_frame_header fchdr;
+ struct fc_ct_hdr fc_std_ct_hdr;
+ struct fc_fdmi_rpa rpa;
+} __packed;
+
+struct fc_std_rft_id {
+ struct fc_frame_header fchdr;
+ struct fc_ct_hdr fc_std_ct_hdr;
+ struct fc_ns_rft_id rft_id;
+} __packed;
+
+struct fc_std_rff_id {
+ struct fc_frame_header fchdr;
+ struct fc_ct_hdr fc_std_ct_hdr;
+ struct fc_ns_rff_id rff_id;
+} __packed;
+
+struct fc_std_gpn_ft {
+ struct fc_frame_header fchdr;
+ struct fc_ct_hdr fc_std_ct_hdr;
+ struct fc_ns_gid_ft gpn_ft;
+} __packed;
+
+/* Accept CT_IU for GPN_FT */
+struct fc_gpn_ft_rsp_iu {
+ uint8_t ctrl;
+ uint8_t fcid[3];
+ uint32_t rsvd;
+ __be64 wwpn;
+} __packed;
+
+struct fc_std_rls {
+ struct fc_frame_header fchdr;
+ struct fc_els_rls els;
+} __packed;
+
+struct fc_std_scr {
+ struct fc_frame_header fchdr;
+ struct fc_els_scr scr;
+} __packed;
+
+struct fc_std_rscn {
+ struct fc_frame_header fchdr;
+ struct fc_els_rscn els;
+} __packed;
+
+struct fc_std_logo {
+ struct fc_frame_header fchdr;
+ struct fc_els_logo els;
+} __packed;
+
+#define FNIC_ETH_FCOE_HDRS_OFFSET \
+ (sizeof(struct ethhdr) + sizeof(struct fcoe_hdr))
+
+#endif /* _FDLS_FC_H */
diff --git a/drivers/scsi/fnic/fnic_fdls.h b/drivers/scsi/fnic/fnic_fdls.h
new file mode 100644
index 000000000000..5d78eea20873
--- /dev/null
+++ b/drivers/scsi/fnic/fnic_fdls.h
@@ -0,0 +1,433 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2008 Cisco Systems, Inc. All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc. All rights reserved.
+ */
+
+#ifndef _FNIC_FDLS_H_
+#define _FNIC_FDLS_H_
+
+#include "fnic_stats.h"
+#include "fdls_fc.h"
+
+/* FDLS - Fabric discovery and login services
+ * -> VLAN discovery
+ * -> retry every retry delay seconds until it succeeds.
+ * <- List of VLANs
+ *
+ * -> Solicitation
+ * <- Solicitation response (Advertisement)
+ *
+ * -> FCF selection & FLOGI ( FLOGI timeout - 2 * E_D_TOV)
+ * <- FLOGI response
+ *
+ * -> FCF keep alive
+ * <- FCF keep alive
+ *
+ * -> PLOGI to FFFFFC (DNS) (PLOGI timeout - 2 * R_A_TOV)
+ * -> ABTS if timeout (ABTS tomeout - 2 * R_A_TOV)
+ * <- PLOGI response
+ * -> Retry PLOGI to FFFFFC (DNS) - Number of retries from vnic.cfg
+ *
+ * -> SCR to FFFFFC (DNS) (SCR timeout - 2 * R_A_TOV)
+ * -> ABTS if timeout (ABTS tomeout - 2 * R_A_TOV)
+ * <- SCR response
+ * -> Retry SCR - Number of retries 2
+ *
+ * -> GPN_FT to FFFFFC (GPN_FT timeout - 2 * R_A_TOV)a
+ * -> Retry on BUSY until it succeeds
+ * -> Retry on BUSY until it succeeds
+ * -> 2 retries on timeout
+ *
+ * -> RFT_ID to FFFFFC (DNS) (RFT_ID timeout - 3 * R_A_TOV)
+ * -> ABTS if timeout (ABTS tomeout - 2 * R_A_TOV)
+ * -> Retry RFT_ID to FFFFFC (DNS) (Number of retries 2 )
+ * -> Ignore if both retires fail.
+ *
+ * Session establishment with targets
+ * For each PWWN
+ * -> PLOGI to FCID of that PWWN (PLOGI timeout 2 * R_A_TOV)
+ * -> ABTS if timeout (ABTS tomeout - 2 * R_A_TOV)
+ * <- PLOGI response
+ * -> Retry PLOGI. Num retries using vnic.cfg
+ *
+ * -> PRLI to FCID of that PWWN (PRLI timeout 2 * R_A_TOV)
+ * -> ABTS if timeout (ABTS tomeout - 2 * R_A_TOV)
+ * <- PRLI response
+ * -> Retry PRLI. Num retries using vnic.cfg
+ *
+ */
+
+#define FDLS_RETRY_COUNT 2
+
+/*
+ * OXID encoding:
+ * bits 0-8: oxid idx - allocated from poool
+ * bits 9-13: oxid frame code from fnic_oxid_frame_type_e
+ * bits 14-15: all zeros
+ */
+#define FNIC_OXID_POOL_SZ (512) /* always power of 2 */
+#define FNIC_OXID_ENCODE(idx, frame_type) (frame_type | idx)
+#define FNIC_FRAME_MASK 0xFE00
+#define FNIC_FRAME_TYPE(oxid) (oxid & FNIC_FRAME_MASK)
+#define FNIC_OXID_IDX(oxid) ((oxid) & (FNIC_OXID_POOL_SZ - 1))
+
+#define OXID_RECLAIM_TOV(iport) (2 * iport->r_a_tov) /* in milliseconds */
+
+#define FNIC_FDLS_FABRIC_ABORT_ISSUED 0x1
+#define FNIC_FDLS_FPMA_LEARNT 0x2
+
+/* tport flags */
+#define FNIC_FDLS_TPORT_IN_GPN_FT_LIST 0x1
+#define FNIC_FDLS_TGT_ABORT_ISSUED 0x2
+#define FNIC_FDLS_TPORT_SEND_ADISC 0x4
+#define FNIC_FDLS_RETRY_FRAME 0x8
+#define FNIC_FDLS_TPORT_BUSY 0x10
+#define FNIC_FDLS_TPORT_TERMINATING 0x20
+#define FNIC_FDLS_TPORT_DELETED 0x40
+#define FNIC_FDLS_SCSI_REGISTERED 0x200
+
+/* Retry supported by rport(returned by prli service parameters) */
+#define FDLS_FC_RP_FLAGS_RETRY 0x1
+
+#define fdls_set_state(_fdls_fabric, _state) ((_fdls_fabric)->state = _state)
+#define fdls_get_state(_fdls_fabric) ((_fdls_fabric)->state)
+
+#define FNIC_FDMI_ACTIVE 0x8
+#define FNIC_FIRST_LINK_UP 0x2
+
+#define fdls_set_tport_state(_tport, _state) (_tport->state = _state)
+#define fdls_get_tport_state(_tport) (_tport->state)
+
+#define FNIC_PORTSPEED_10GBIT 1
+#define FNIC_FRAME_HT_ROOM (2148)
+#define FNIC_FCOE_FRAME_MAXSZ (2112)
+
+
+#define FNIC_FRAME_TYPE_FABRIC_FLOGI 0x1000
+#define FNIC_FRAME_TYPE_FABRIC_PLOGI 0x1200
+#define FNIC_FRAME_TYPE_FABRIC_RPN 0x1400
+#define FNIC_FRAME_TYPE_FABRIC_RFT 0x1600
+#define FNIC_FRAME_TYPE_FABRIC_RFF 0x1800
+#define FNIC_FRAME_TYPE_FABRIC_SCR 0x1A00
+#define FNIC_FRAME_TYPE_FABRIC_GPN_FT 0x1C00
+#define FNIC_FRAME_TYPE_FABRIC_LOGO 0x1E00
+#define FNIC_FRAME_TYPE_FDMI_PLOGI 0x2000
+#define FNIC_FRAME_TYPE_FDMI_RHBA 0x2200
+#define FNIC_FRAME_TYPE_FDMI_RPA 0x2400
+#define FNIC_FRAME_TYPE_TGT_PLOGI 0x2600
+#define FNIC_FRAME_TYPE_TGT_PRLI 0x2800
+#define FNIC_FRAME_TYPE_TGT_ADISC 0x2A00
+#define FNIC_FRAME_TYPE_TGT_LOGO 0x2C00
+
+struct fnic_fip_fcf_s {
+ uint16_t vlan_id;
+ uint8_t fcf_mac[6];
+ uint8_t fcf_priority;
+ uint32_t fka_adv_period;
+ uint8_t ka_disabled;
+};
+
+enum fnic_fdls_state_e {
+ FDLS_STATE_INIT = 0,
+ FDLS_STATE_LINKDOWN,
+ FDLS_STATE_FABRIC_LOGO,
+ FDLS_STATE_FLOGO_DONE,
+ FDLS_STATE_FABRIC_FLOGI,
+ FDLS_STATE_FABRIC_PLOGI,
+ FDLS_STATE_RPN_ID,
+ FDLS_STATE_REGISTER_FC4_TYPES,
+ FDLS_STATE_REGISTER_FC4_FEATURES,
+ FDLS_STATE_SCR,
+ FDLS_STATE_GPN_FT,
+ FDLS_STATE_TGT_DISCOVERY,
+ FDLS_STATE_RSCN_GPN_FT,
+ FDLS_STATE_SEND_GPNFT
+};
+
+struct fnic_fdls_fabric_s {
+ enum fnic_fdls_state_e state;
+ uint32_t flags;
+ struct list_head tport_list; /* List of discovered tports */
+ struct timer_list retry_timer;
+ int del_timer_inprogress;
+ int del_fdmi_timer_inprogress;
+ int retry_counter;
+ int timer_pending;
+ int fdmi_retry;
+ struct timer_list fdmi_timer;
+ int fdmi_pending;
+};
+
+struct fnic_fdls_fip_s {
+ uint32_t state;
+ uint32_t flogi_retry;
+};
+
+/* Message to tport_event_handler */
+enum fnic_tgt_msg_id {
+ TGT_EV_NONE = 0,
+ TGT_EV_RPORT_ADD,
+ TGT_EV_RPORT_DEL,
+ TGT_EV_TPORT_DELETE,
+ TGT_EV_REMOVE
+};
+
+struct fnic_tport_event_s {
+ struct list_head links;
+ enum fnic_tgt_msg_id event;
+ void *arg1;
+};
+
+enum fdls_tgt_state_e {
+ FDLS_TGT_STATE_INIT = 0,
+ FDLS_TGT_STATE_PLOGI,
+ FDLS_TGT_STATE_PRLI,
+ FDLS_TGT_STATE_READY,
+ FDLS_TGT_STATE_LOGO_RECEIVED,
+ FDLS_TGT_STATE_ADISC,
+ FDL_TGT_STATE_PLOGO,
+ FDLS_TGT_STATE_OFFLINING,
+ FDLS_TGT_STATE_OFFLINE
+};
+
+struct fnic_tport_s {
+ struct list_head links; /* To link the tports */
+ enum fdls_tgt_state_e state;
+ uint32_t flags;
+ uint32_t fcid;
+ uint64_t wwpn;
+ uint64_t wwnn;
+ uint16_t active_oxid;
+ uint16_t tgt_flags;
+ atomic_t in_flight; /* io counter */
+ uint16_t max_payload_size;
+ uint16_t r_a_tov;
+ uint16_t e_d_tov;
+ uint16_t lun0_delay;
+ int max_concur_seqs;
+ uint32_t fcp_csp;
+ struct timer_list retry_timer;
+ int del_timer_inprogress;
+ int retry_counter;
+ int timer_pending;
+ unsigned int num_pending_cmds;
+ int nexus_restart_count;
+ int exch_reset_in_progress;
+ void *iport;
+ struct work_struct tport_del_work;
+ struct completion *tport_del_done;
+ struct fc_rport *rport;
+ char str_wwpn[20];
+ char str_wwnn[20];
+};
+
+/* OXID pool related structures */
+struct reclaim_entry_s {
+ struct list_head links;
+ /* oxid that needs to be freed after 2*r_a_tov */
+ uint16_t oxid_idx;
+ /* in jiffies. Use this to waiting time */
+ unsigned long expires;
+ unsigned long *bitmap;
+};
+
+/* used for allocating oxids for fabric and fdmi requests */
+struct fnic_oxid_pool_s {
+ DECLARE_BITMAP(bitmap, FNIC_OXID_POOL_SZ);
+ int sz; /* size of the pool or block */
+ int next_idx; /* used for cycling through the oxid pool */
+
+ /* retry schedule free */
+ DECLARE_BITMAP(pending_schedule_free, FNIC_OXID_POOL_SZ);
+ struct delayed_work schedule_oxid_free_retry;
+
+ /* List of oxids that need to be freed and reclaimed.
+ * This list is shared by all the oxid pools
+ */
+ struct list_head oxid_reclaim_list;
+ /* Work associated with reclaim list */
+ struct delayed_work oxid_reclaim_work;
+};
+
+/* iport */
+enum fnic_iport_state_e {
+ FNIC_IPORT_STATE_INIT = 0,
+ FNIC_IPORT_STATE_LINK_WAIT,
+ FNIC_IPORT_STATE_FIP,
+ FNIC_IPORT_STATE_FABRIC_DISC,
+ FNIC_IPORT_STATE_READY
+};
+
+struct fnic_iport_s {
+ enum fnic_iport_state_e state;
+ struct fnic *fnic;
+ uint64_t boot_time;
+ uint32_t flags;
+ int usefip;
+ uint8_t hwmac[6]; /* HW MAC Addr */
+ uint8_t fpma[6]; /* Fabric Provided MA */
+ uint8_t fcfmac[6]; /* MAC addr of Fabric */
+ uint16_t vlan_id;
+ uint32_t fcid;
+
+ /* oxid pool */
+ struct fnic_oxid_pool_s oxid_pool;
+
+ /*
+ * fabric reqs are serialized and only one req at a time.
+ * Tracking the oxid for sending abort
+ */
+ uint16_t active_oxid_fabric_req;
+ /* fdmi only */
+ uint16_t active_oxid_fdmi_plogi;
+ uint16_t active_oxid_fdmi_rhba;
+ uint16_t active_oxid_fdmi_rpa;
+
+ struct fnic_fip_fcf_s selected_fcf;
+ struct fnic_fdls_fip_s fip;
+ struct fnic_fdls_fabric_s fabric;
+ struct list_head tport_list;
+ struct list_head tport_list_pending_del;
+ /* list of tports for which we are yet to send PLOGO */
+ struct list_head inprocess_tport_list;
+ struct list_head deleted_tport_list;
+ struct work_struct tport_event_work;
+ uint32_t e_d_tov; /* msec */
+ uint32_t r_a_tov; /* msec */
+ uint32_t link_supported_speeds;
+ uint32_t max_flogi_retries;
+ uint32_t max_plogi_retries;
+ uint32_t plogi_timeout;
+ uint32_t service_params;
+ uint64_t wwpn;
+ uint64_t wwnn;
+ uint16_t max_payload_size;
+ spinlock_t deleted_tport_lst_lock;
+ struct completion *flogi_reg_done;
+ char str_wwpn[20];
+ char str_wwnn[20];
+ };
+ struct rport_dd_data_s {
+ struct fnic_tport_s *tport;
+ struct fnic_iport_s *iport;
+};
+
+enum fnic_recv_frame_type_e {
+ FNIC_FABRIC_FLOGI_RSP = 1,
+ FNIC_FABRIC_PLOGI_RSP,
+ FNIC_FABRIC_RPN_RSP,
+ FNIC_FABRIC_RFT_RSP,
+ FNIC_FABRIC_RFF_RSP,
+ FNIC_FABRIC_SCR_RSP,
+ FNIC_FABRIC_GPN_FT_RSP,
+ FNIC_FABRIC_BLS_ABTS_RSP,
+ FNIC_FDMI_PLOGI_RSP,
+ FNIC_FDMI_REG_HBA_RSP,
+ FNIC_FDMI_RPA_RSP,
+ FNIC_FDMI_BLS_ABTS_RSP,
+ FNIC_FABRIC_LOGO_RSP,
+
+ /* responses to target requests */
+ FNIC_TPORT_PLOGI_RSP,
+ FNIC_TPORT_PRLI_RSP,
+ FNIC_TPORT_ADISC_RSP,
+ FNIC_TPORT_BLS_ABTS_RSP,
+ FNIC_TPORT_LOGO_RSP,
+
+ /* unsolicited requests */
+ FNIC_BLS_ABTS_REQ,
+ FNIC_ELS_PLOGI_REQ,
+ FNIC_ELS_RSCN_REQ,
+ FNIC_ELS_LOGO_REQ,
+ FNIC_ELS_ECHO_REQ,
+ FNIC_ELS_ADISC,
+ FNIC_ELS_RLS,
+ FNIC_ELS_RRQ,
+ FNIC_ELS_UNSUPPORTED_REQ,
+};
+
+enum fnic_port_speeds {
+ DCEM_PORTSPEED_NONE = 0,
+ DCEM_PORTSPEED_1G = 1000,
+ DCEM_PORTSPEED_2G = 2000,
+ DCEM_PORTSPEED_4G = 4000,
+ DCEM_PORTSPEED_8G = 8000,
+ DCEM_PORTSPEED_10G = 10000,
+ DCEM_PORTSPEED_16G = 16000,
+ DCEM_PORTSPEED_20G = 20000,
+ DCEM_PORTSPEED_25G = 25000,
+ DCEM_PORTSPEED_32G = 32000,
+ DCEM_PORTSPEED_40G = 40000,
+ DCEM_PORTSPEED_4x10G = 41000,
+ DCEM_PORTSPEED_50G = 50000,
+ DCEM_PORTSPEED_64G = 64000,
+ DCEM_PORTSPEED_100G = 100000,
+ DCEM_PORTSPEED_128G = 128000,
+};
+
+/* Function Declarations */
+/* fdls_disc.c */
+void fnic_fdls_disc_init(struct fnic_iport_s *iport);
+void fnic_fdls_disc_start(struct fnic_iport_s *iport);
+void fnic_fdls_recv_frame(struct fnic_iport_s *iport, void *rx_frame,
+ int len, int fchdr_offset);
+void fnic_fdls_link_down(struct fnic_iport_s *iport);
+int fdls_init_frame_pool(struct fnic_iport_s *iport);
+uint8_t *fdls_alloc_frame(struct fnic_iport_s *iport);
+uint16_t fdls_alloc_oxid(struct fnic_iport_s *iport, int oxid_frame_type,
+ uint16_t *active_oxid);
+void fdls_free_oxid(struct fnic_iport_s *iport,
+ uint16_t oxid, uint16_t *active_oxid);
+void fdls_tgt_logout(struct fnic_iport_s *iport,
+ struct fnic_tport_s *tport);
+void fnic_del_fabric_timer_sync(struct fnic *fnic);
+void fnic_del_tport_timer_sync(struct fnic *fnic,
+ struct fnic_tport_s *tport);
+void fdls_send_fabric_logo(struct fnic_iport_s *iport);
+int fnic_fdls_validate_and_get_frame_type(struct fnic_iport_s *iport,
+ struct fc_frame_header *fchdr);
+void fdls_send_tport_abts(struct fnic_iport_s *iport,
+ struct fnic_tport_s *tport);
+bool fdls_delete_tport(struct fnic_iport_s *iport,
+ struct fnic_tport_s *tport);
+void fdls_fdmi_timer_callback(struct timer_list *t);
+
+/* fnic_fcs.c */
+void fnic_fdls_init(struct fnic *fnic, int usefip);
+void fnic_send_fcoe_frame(struct fnic_iport_s *iport, void *frame,
+ int frame_size);
+void fnic_fcoe_send_vlan_req(struct fnic *fnic);
+int fnic_send_fip_frame(struct fnic_iport_s *iport,
+ void *frame, int frame_size);
+void fnic_fdls_learn_fcoe_macs(struct fnic_iport_s *iport, void *rx_frame,
+ uint8_t *fcid);
+
+void fnic_fdls_add_tport(struct fnic_iport_s *iport,
+ struct fnic_tport_s *tport, unsigned long flags);
+void fnic_fdls_remove_tport(struct fnic_iport_s *iport,
+ struct fnic_tport_s *tport,
+ unsigned long flags);
+
+/* fip.c */
+void fnic_fcoe_send_vlan_req(struct fnic *fnic);
+void fnic_common_fip_cleanup(struct fnic *fnic);
+int fdls_fip_recv_frame(struct fnic *fnic, void *frame);
+void fnic_handle_fcs_ka_timer(struct timer_list *t);
+void fnic_handle_enode_ka_timer(struct timer_list *t);
+void fnic_handle_vn_ka_timer(struct timer_list *t);
+void fnic_handle_fip_timer(struct timer_list *t);
+extern void fdls_fabric_timer_callback(struct timer_list *t);
+
+/* fnic_scsi.c */
+void fnic_scsi_fcpio_reset(struct fnic *fnic);
+extern void fdls_fabric_timer_callback(struct timer_list *t);
+void fnic_rport_exch_reset(struct fnic *fnic, u32 fcid);
+int fnic_fdls_register_portid(struct fnic_iport_s *iport, u32 port_id,
+ void *fp);
+struct fnic_tport_s *fnic_find_tport_by_fcid(struct fnic_iport_s *iport,
+ uint32_t fcid);
+struct fnic_tport_s *fnic_find_tport_by_wwpn(struct fnic_iport_s *iport,
+ uint64_t wwpn);
+
+#endif /* _FNIC_FDLS_H_ */
--
2.47.0
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