mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 08:58:07 +00:00
6498cbc57f
Clang warns when a variable is assigned to itself.
drivers/scsi/bfa/bfa_fcbuild.c:199:6: warning: explicitly assigning
value of variable of type 'int' to itself [-Wself-assign]
len = len;
~~~ ^ ~~~
drivers/scsi/bfa/bfa_fcbuild.c:838:6: warning: explicitly assigning
value of variable of type 'int' to itself [-Wself-assign]
len = len;
~~~ ^ ~~~
drivers/scsi/bfa/bfa_fcbuild.c:917:6: warning: explicitly assigning
value of variable of type 'int' to itself [-Wself-assign]
len = len;
~~~ ^ ~~~
drivers/scsi/bfa/bfa_fcbuild.c:981:6: warning: explicitly assigning
value of variable of type 'int' to itself [-Wself-assign]
len = len;
~~~ ^ ~~~
drivers/scsi/bfa/bfa_fcbuild.c:1008:6: warning: explicitly assigning
value of variable of type 'int' to itself [-Wself-assign]
len = len;
~~~ ^ ~~~
5 warnings generated.
This construct is usually used to avoid unused variable warnings, which
I assume is the case here. -Wunused-parameter is hidden behind -Wextra
with GCC 4.6, which is the minimum version to compile the kernel as of
commit cafa0010cd ("Raise the minimum required gcc version to 4.6").
However, upon further inspection, these functions aren't actually used
anywhere; they're just defined. Rather than just removing the self
assignments, remove all of this dead code.
Link: https://github.com/ClangBuiltLinux/linux/issues/148
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
320 lines
9.6 KiB
C
320 lines
9.6 KiB
C
/*
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* Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
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* Copyright (c) 2014- QLogic Corporation.
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* All rights reserved
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* www.qlogic.com
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*
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* Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (GPL) Version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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/*
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* fcbuild.h - FC link service frame building and parsing routines
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*/
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#ifndef __FCBUILD_H__
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#define __FCBUILD_H__
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#include "bfad_drv.h"
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#include "bfa_fc.h"
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#include "bfa_defs_fcs.h"
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/*
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* Utility Macros/functions
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*/
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#define wwn_is_equal(_wwn1, _wwn2) \
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(memcmp(&(_wwn1), &(_wwn2), sizeof(wwn_t)) == 0)
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#define fc_roundup(_l, _s) (((_l) + ((_s) - 1)) & ~((_s) - 1))
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/*
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* Given the fc response length, this routine will return
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* the length of the actual payload bytes following the CT header.
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*
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* Assumes the input response length does not include the crc, eof, etc.
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*/
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static inline u32
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fc_get_ctresp_pyld_len(u32 resp_len)
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{
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return resp_len - sizeof(struct ct_hdr_s);
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}
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/*
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* Convert bfa speed to rpsc speed value.
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*/
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static inline enum bfa_port_speed
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fc_rpsc_operspeed_to_bfa_speed(enum fc_rpsc_op_speed speed)
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{
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switch (speed) {
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case RPSC_OP_SPEED_1G:
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return BFA_PORT_SPEED_1GBPS;
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case RPSC_OP_SPEED_2G:
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return BFA_PORT_SPEED_2GBPS;
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case RPSC_OP_SPEED_4G:
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return BFA_PORT_SPEED_4GBPS;
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case RPSC_OP_SPEED_8G:
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return BFA_PORT_SPEED_8GBPS;
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case RPSC_OP_SPEED_16G:
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return BFA_PORT_SPEED_16GBPS;
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case RPSC_OP_SPEED_10G:
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return BFA_PORT_SPEED_10GBPS;
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default:
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return BFA_PORT_SPEED_UNKNOWN;
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}
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}
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/*
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* Convert RPSC speed to bfa speed value.
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*/
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static inline enum fc_rpsc_op_speed
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fc_bfa_speed_to_rpsc_operspeed(enum bfa_port_speed op_speed)
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{
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switch (op_speed) {
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case BFA_PORT_SPEED_1GBPS:
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return RPSC_OP_SPEED_1G;
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case BFA_PORT_SPEED_2GBPS:
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return RPSC_OP_SPEED_2G;
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case BFA_PORT_SPEED_4GBPS:
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return RPSC_OP_SPEED_4G;
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case BFA_PORT_SPEED_8GBPS:
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return RPSC_OP_SPEED_8G;
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case BFA_PORT_SPEED_16GBPS:
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return RPSC_OP_SPEED_16G;
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case BFA_PORT_SPEED_10GBPS:
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return RPSC_OP_SPEED_10G;
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default:
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return RPSC_OP_SPEED_NOT_EST;
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}
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}
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enum fc_parse_status {
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FC_PARSE_OK = 0,
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FC_PARSE_FAILURE = 1,
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FC_PARSE_BUSY = 2,
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FC_PARSE_LEN_INVAL,
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FC_PARSE_ACC_INVAL,
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FC_PARSE_PWWN_NOT_EQUAL,
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FC_PARSE_NWWN_NOT_EQUAL,
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FC_PARSE_RXSZ_INVAL,
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FC_PARSE_NOT_FCP,
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FC_PARSE_OPAFLAG_INVAL,
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FC_PARSE_RPAFLAG_INVAL,
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FC_PARSE_OPA_INVAL,
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FC_PARSE_RPA_INVAL,
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};
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struct fc_templates_s {
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struct fchs_s fc_els_req;
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struct fchs_s fc_bls_req;
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struct fc_logi_s plogi;
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struct fc_rrq_s rrq;
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};
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void fcbuild_init(void);
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u16 fc_flogi_build(struct fchs_s *fchs, struct fc_logi_s *flogi,
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u32 s_id, u16 ox_id, wwn_t port_name, wwn_t node_name,
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u16 pdu_size, u8 set_npiv, u8 set_auth,
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u16 local_bb_credits);
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u16 fc_fdisc_build(struct fchs_s *buf, struct fc_logi_s *flogi, u32 s_id,
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u16 ox_id, wwn_t port_name, wwn_t node_name,
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u16 pdu_size);
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u16 fc_flogi_acc_build(struct fchs_s *fchs, struct fc_logi_s *flogi,
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u32 s_id, __be16 ox_id,
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wwn_t port_name, wwn_t node_name,
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u16 pdu_size,
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u16 local_bb_credits, u8 bb_scn);
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u16 fc_plogi_build(struct fchs_s *fchs, void *pld, u32 d_id,
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u32 s_id, u16 ox_id, wwn_t port_name,
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wwn_t node_name, u16 pdu_size, u16 bb_cr);
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enum fc_parse_status fc_plogi_parse(struct fchs_s *fchs);
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u16 fc_abts_build(struct fchs_s *buf, u32 d_id, u32 s_id,
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u16 ox_id);
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enum fc_parse_status fc_abts_rsp_parse(struct fchs_s *buf, int len);
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u16 fc_rrq_build(struct fchs_s *buf, struct fc_rrq_s *rrq, u32 d_id,
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u32 s_id, u16 ox_id, u16 rrq_oxid);
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u16 fc_rspnid_build(struct fchs_s *fchs, void *pld, u32 s_id,
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u16 ox_id, u8 *name);
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u16 fc_rsnn_nn_build(struct fchs_s *fchs, void *pld, u32 s_id,
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wwn_t node_name, u8 *name);
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u16 fc_rftid_build(struct fchs_s *fchs, void *pld, u32 s_id,
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u16 ox_id, enum bfa_lport_role role);
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u16 fc_rftid_build_sol(struct fchs_s *fchs, void *pyld, u32 s_id,
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u16 ox_id, u8 *fc4_bitmap,
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u32 bitmap_size);
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u16 fc_rffid_build(struct fchs_s *fchs, void *pyld, u32 s_id,
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u16 ox_id, u8 fc4_type, u8 fc4_ftrs);
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u16 fc_gidpn_build(struct fchs_s *fchs, void *pyld, u32 s_id,
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u16 ox_id, wwn_t port_name);
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u16 fc_gpnid_build(struct fchs_s *fchs, void *pld, u32 s_id,
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u16 ox_id, u32 port_id);
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u16 fc_gs_rjt_build(struct fchs_s *fchs, struct ct_hdr_s *cthdr,
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u32 d_id, u32 s_id, u16 ox_id,
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u8 reason_code, u8 reason_code_expl);
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u16 fc_scr_build(struct fchs_s *fchs, struct fc_scr_s *scr,
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u8 set_br_reg, u32 s_id, u16 ox_id);
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u16 fc_plogi_acc_build(struct fchs_s *fchs, void *pld, u32 d_id,
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u32 s_id, u16 ox_id,
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wwn_t port_name, wwn_t node_name,
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u16 pdu_size, u16 bb_cr);
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u16 fc_adisc_build(struct fchs_s *fchs, struct fc_adisc_s *adisc,
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u32 d_id, u32 s_id, __be16 ox_id, wwn_t port_name,
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wwn_t node_name);
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enum fc_parse_status fc_adisc_parse(struct fchs_s *fchs, void *pld,
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u32 host_dap, wwn_t node_name, wwn_t port_name);
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enum fc_parse_status fc_adisc_rsp_parse(struct fc_adisc_s *adisc, int len,
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wwn_t port_name, wwn_t node_name);
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u16 fc_adisc_acc_build(struct fchs_s *fchs, struct fc_adisc_s *adisc,
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u32 d_id, u32 s_id, __be16 ox_id,
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wwn_t port_name, wwn_t node_name);
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u16 fc_ls_rjt_build(struct fchs_s *fchs, struct fc_ls_rjt_s *ls_rjt,
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u32 d_id, u32 s_id, __be16 ox_id,
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u8 reason_code, u8 reason_code_expl);
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u16 fc_ls_acc_build(struct fchs_s *fchs, struct fc_els_cmd_s *els_cmd,
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u32 d_id, u32 s_id, __be16 ox_id);
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u16 fc_prli_build(struct fchs_s *fchs, void *pld, u32 d_id,
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u32 s_id, u16 ox_id);
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enum fc_parse_status fc_prli_rsp_parse(struct fc_prli_s *prli, int len);
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u16 fc_prli_acc_build(struct fchs_s *fchs, void *pld, u32 d_id,
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u32 s_id, __be16 ox_id,
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enum bfa_lport_role role);
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u16 fc_rnid_build(struct fchs_s *fchs, struct fc_rnid_cmd_s *rnid,
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u32 d_id, u32 s_id, u16 ox_id,
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u32 data_format);
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u16 fc_rnid_acc_build(struct fchs_s *fchs,
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struct fc_rnid_acc_s *rnid_acc, u32 d_id, u32 s_id,
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__be16 ox_id, u32 data_format,
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struct fc_rnid_common_id_data_s *common_id_data,
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struct fc_rnid_general_topology_data_s *gen_topo_data);
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u16 fc_rpsc2_build(struct fchs_s *fchs, struct fc_rpsc2_cmd_s *rps2c,
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u32 d_id, u32 s_id, u32 *pid_list, u16 npids);
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u16 fc_rpsc_build(struct fchs_s *fchs, struct fc_rpsc_cmd_s *rpsc,
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u32 d_id, u32 s_id, u16 ox_id);
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u16 fc_rpsc_acc_build(struct fchs_s *fchs,
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struct fc_rpsc_acc_s *rpsc_acc, u32 d_id, u32 s_id,
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__be16 ox_id, struct fc_rpsc_speed_info_s *oper_speed);
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u16 fc_gid_ft_build(struct fchs_s *fchs, void *pld, u32 s_id,
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u8 fc4_type);
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u16 fc_rpnid_build(struct fchs_s *fchs, void *pyld, u32 s_id,
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u32 port_id, wwn_t port_name);
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u16 fc_rnnid_build(struct fchs_s *fchs, void *pyld, u32 s_id,
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u32 port_id, wwn_t node_name);
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u16 fc_rcsid_build(struct fchs_s *fchs, void *pyld, u32 s_id,
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u32 port_id, u32 cos);
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u16 fc_rptid_build(struct fchs_s *fchs, void *pyld, u32 s_id,
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u32 port_id, u8 port_type);
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u16 fc_ganxt_build(struct fchs_s *fchs, void *pyld, u32 s_id,
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u32 port_id);
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u16 fc_logo_build(struct fchs_s *fchs, struct fc_logo_s *logo, u32 d_id,
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u32 s_id, u16 ox_id, wwn_t port_name);
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u16 fc_logo_acc_build(struct fchs_s *fchs, void *pld, u32 d_id,
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u32 s_id, __be16 ox_id);
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u16 fc_fdmi_reqhdr_build(struct fchs_s *fchs, void *pyld, u32 s_id,
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u16 cmd_code);
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u16 fc_gmal_req_build(struct fchs_s *fchs, void *pyld, u32 s_id, wwn_t wwn);
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u16 fc_gfn_req_build(struct fchs_s *fchs, void *pyld, u32 s_id, wwn_t wwn);
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void fc_get_fc4type_bitmask(u8 fc4_type, u8 *bit_mask);
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void fc_els_req_build(struct fchs_s *fchs, u32 d_id, u32 s_id,
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__be16 ox_id);
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enum fc_parse_status fc_plogi_rsp_parse(struct fchs_s *fchs, int len,
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wwn_t port_name);
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enum fc_parse_status fc_prli_parse(struct fc_prli_s *prli);
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enum fc_parse_status fc_pdisc_parse(struct fchs_s *fchs, wwn_t node_name,
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wwn_t port_name);
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u16 fc_ba_acc_build(struct fchs_s *fchs, struct fc_ba_acc_s *ba_acc, u32 d_id,
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u32 s_id, __be16 ox_id, u16 rx_id);
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int fc_logout_params_pages(struct fchs_s *fc_frame, u8 els_code);
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u16 fc_tprlo_acc_build(struct fchs_s *fchs, struct fc_tprlo_acc_s *tprlo_acc,
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u32 d_id, u32 s_id, __be16 ox_id, int num_pages);
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u16 fc_prlo_acc_build(struct fchs_s *fchs, struct fc_prlo_acc_s *prlo_acc,
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u32 d_id, u32 s_id, __be16 ox_id, int num_pages);
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u16 fc_pdisc_build(struct fchs_s *fchs, u32 d_id, u32 s_id,
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u16 ox_id, wwn_t port_name, wwn_t node_name,
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u16 pdu_size);
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u16 fc_pdisc_rsp_parse(struct fchs_s *fchs, int len, wwn_t port_name);
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u16 fc_prlo_build(struct fchs_s *fchs, u32 d_id, u32 s_id,
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u16 ox_id, int num_pages);
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u16 fc_tprlo_build(struct fchs_s *fchs, u32 d_id, u32 s_id,
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u16 ox_id, int num_pages, enum fc_tprlo_type tprlo_type,
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u32 tpr_id);
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u16 fc_ba_rjt_build(struct fchs_s *fchs, u32 d_id, u32 s_id,
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__be16 ox_id, u32 reason_code, u32 reason_expl);
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u16 fc_gnnid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u16 ox_id,
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u32 port_id);
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u16 fc_ct_rsp_parse(struct ct_hdr_s *cthdr);
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u16 fc_rscn_build(struct fchs_s *fchs, struct fc_rscn_pl_s *rscn, u32 s_id,
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u16 ox_id);
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#endif
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