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4f8d1bd273
We need to store PROTO_ERR_IMPL_LOGO (26) things here, but the first element isn't used so the array should have 27 elements. This matches fwevt_to_rnevt[] which has 27 elements. The patch solves a Smatch static checker warning on my system: drivers/scsi/csiostor/csio_rnode.c:880 csio_rnode_fwevt_handler() error: buffer overflow '(rn)->stats.n_evt_fw' 26 <= 26 Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Naresh Kumar Inna <naresh@chelsio.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
142 lines
4.7 KiB
C
142 lines
4.7 KiB
C
/*
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* This file is part of the Chelsio FCoE driver for Linux.
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*
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* Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __CSIO_RNODE_H__
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#define __CSIO_RNODE_H__
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#include "csio_defs.h"
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/* State machine evets */
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enum csio_rn_ev {
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CSIO_RNFE_NONE = (uint32_t)0, /* None */
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CSIO_RNFE_LOGGED_IN, /* [N/F]Port login
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* complete.
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*/
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CSIO_RNFE_PRLI_DONE, /* PRLI completed */
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CSIO_RNFE_PLOGI_RECV, /* Received PLOGI */
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CSIO_RNFE_PRLI_RECV, /* Received PLOGI */
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CSIO_RNFE_LOGO_RECV, /* Received LOGO */
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CSIO_RNFE_PRLO_RECV, /* Received PRLO */
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CSIO_RNFE_DOWN, /* Rnode is down */
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CSIO_RNFE_CLOSE, /* Close rnode */
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CSIO_RNFE_NAME_MISSING, /* Rnode name missing
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* in name server.
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*/
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CSIO_RNFE_MAX_EVENT,
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};
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/* rnode stats */
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struct csio_rnode_stats {
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uint32_t n_err; /* error */
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uint32_t n_err_inval; /* invalid parameter */
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uint32_t n_err_nomem; /* error nomem */
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uint32_t n_evt_unexp; /* unexpected event */
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uint32_t n_evt_drop; /* unexpected event */
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uint32_t n_evt_fw[PROTO_ERR_IMPL_LOGO + 1]; /* fw events */
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enum csio_rn_ev n_evt_sm[CSIO_RNFE_MAX_EVENT]; /* State m/c events */
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uint32_t n_lun_rst; /* Number of resets of
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* of LUNs under this
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* target
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*/
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uint32_t n_lun_rst_fail; /* Number of LUN reset
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* failures.
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*/
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uint32_t n_tgt_rst; /* Number of target resets */
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uint32_t n_tgt_rst_fail; /* Number of target reset
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* failures.
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*/
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};
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/* Defines for rnode role */
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#define CSIO_RNFR_INITIATOR 0x1
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#define CSIO_RNFR_TARGET 0x2
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#define CSIO_RNFR_FABRIC 0x4
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#define CSIO_RNFR_NS 0x8
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#define CSIO_RNFR_NPORT 0x10
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struct csio_rnode {
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struct csio_sm sm; /* State machine -
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* should be the
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* 1st member
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*/
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struct csio_lnode *lnp; /* Pointer to owning
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* Lnode */
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uint32_t flowid; /* Firmware ID */
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struct list_head host_cmpl_q; /* SCSI IOs
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* pending to completed
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* to Mid-layer.
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*/
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/* FC identifiers for remote node */
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uint32_t nport_id;
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uint16_t fcp_flags; /* FCP Flags */
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uint8_t cur_evt; /* Current event */
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uint8_t prev_evt; /* Previous event */
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uint32_t role; /* Fabric/Target/
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* Initiator/NS
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*/
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struct fcoe_rdev_entry *rdev_entry; /* Rdev entry */
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struct csio_service_parms rn_sparm;
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/* FC transport attributes */
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struct fc_rport *rport; /* FC transport rport */
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uint32_t supp_classes; /* Supported FC classes */
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uint32_t maxframe_size; /* Max Frame size */
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uint32_t scsi_id; /* Transport given SCSI id */
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struct csio_rnode_stats stats; /* Common rnode stats */
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};
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#define csio_rn_flowid(rn) ((rn)->flowid)
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#define csio_rn_wwpn(rn) ((rn)->rn_sparm.wwpn)
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#define csio_rn_wwnn(rn) ((rn)->rn_sparm.wwnn)
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#define csio_rnode_to_lnode(rn) ((rn)->lnp)
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int csio_is_rnode_ready(struct csio_rnode *rn);
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void csio_rnode_state_to_str(struct csio_rnode *rn, int8_t *str);
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struct csio_rnode *csio_rnode_lookup_portid(struct csio_lnode *, uint32_t);
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struct csio_rnode *csio_confirm_rnode(struct csio_lnode *,
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uint32_t, struct fcoe_rdev_entry *);
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void csio_rnode_fwevt_handler(struct csio_rnode *rn, uint8_t fwevt);
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void csio_put_rnode(struct csio_lnode *ln, struct csio_rnode *rn);
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void csio_reg_rnode(struct csio_rnode *);
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void csio_unreg_rnode(struct csio_rnode *);
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void csio_rnode_devloss_handler(struct csio_rnode *);
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#endif /* ifndef __CSIO_RNODE_H__ */
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