mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
1b6ac5e3ff
When issuing I/O we check if rport is online through libfc rport_lookup() function which needs to be protected by mutex lock that cannot acquired in I/O context. The change is to use midlayer remote port s dd_data which is preserved until its devloss timeout and no protection is required. The the scsi_cmnd error code is expected to be in the left 16 bits of the result field. Changed to correct this. Fnic driver version changed from 1.6.0.20 to 1.6.0.21 Signed-off-by: Satish Kharat <satishkh@cisco.com> Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com> Reviewed-by: Ewan Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
379 lines
12 KiB
C
379 lines
12 KiB
C
/*
|
|
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
|
*
|
|
* This program is free software; you may redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
#ifndef _FNIC_H_
|
|
#define _FNIC_H_
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/bitops.h>
|
|
#include <scsi/libfc.h>
|
|
#include <scsi/libfcoe.h>
|
|
#include "fnic_io.h"
|
|
#include "fnic_res.h"
|
|
#include "fnic_trace.h"
|
|
#include "fnic_stats.h"
|
|
#include "vnic_dev.h"
|
|
#include "vnic_wq.h"
|
|
#include "vnic_rq.h"
|
|
#include "vnic_cq.h"
|
|
#include "vnic_wq_copy.h"
|
|
#include "vnic_intr.h"
|
|
#include "vnic_stats.h"
|
|
#include "vnic_scsi.h"
|
|
|
|
#define DRV_NAME "fnic"
|
|
#define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
|
|
#define DRV_VERSION "1.6.0.21"
|
|
#define PFX DRV_NAME ": "
|
|
#define DFX DRV_NAME "%d: "
|
|
|
|
#define DESC_CLEAN_LOW_WATERMARK 8
|
|
#define FNIC_UCSM_DFLT_THROTTLE_CNT_BLD 16 /* UCSM default throttle count */
|
|
#define FNIC_MIN_IO_REQ 256 /* Min IO throttle count */
|
|
#define FNIC_MAX_IO_REQ 1024 /* scsi_cmnd tag map entries */
|
|
#define FNIC_DFLT_IO_REQ 256 /* Default scsi_cmnd tag map entries */
|
|
#define FNIC_IO_LOCKS 64 /* IO locks: power of 2 */
|
|
#define FNIC_DFLT_QUEUE_DEPTH 32
|
|
#define FNIC_STATS_RATE_LIMIT 4 /* limit rate at which stats are pulled up */
|
|
|
|
/*
|
|
* Tag bits used for special requests.
|
|
*/
|
|
#define FNIC_TAG_ABORT BIT(30) /* tag bit indicating abort */
|
|
#define FNIC_TAG_DEV_RST BIT(29) /* indicates device reset */
|
|
#define FNIC_TAG_MASK (BIT(24) - 1) /* mask for lookup */
|
|
#define FNIC_NO_TAG -1
|
|
|
|
/*
|
|
* Command flags to identify the type of command and for other future
|
|
* use.
|
|
*/
|
|
#define FNIC_NO_FLAGS 0
|
|
#define FNIC_IO_INITIALIZED BIT(0)
|
|
#define FNIC_IO_ISSUED BIT(1)
|
|
#define FNIC_IO_DONE BIT(2)
|
|
#define FNIC_IO_REQ_NULL BIT(3)
|
|
#define FNIC_IO_ABTS_PENDING BIT(4)
|
|
#define FNIC_IO_ABORTED BIT(5)
|
|
#define FNIC_IO_ABTS_ISSUED BIT(6)
|
|
#define FNIC_IO_TERM_ISSUED BIT(7)
|
|
#define FNIC_IO_INTERNAL_TERM_ISSUED BIT(8)
|
|
#define FNIC_IO_ABT_TERM_DONE BIT(9)
|
|
#define FNIC_IO_ABT_TERM_REQ_NULL BIT(10)
|
|
#define FNIC_IO_ABT_TERM_TIMED_OUT BIT(11)
|
|
#define FNIC_DEVICE_RESET BIT(12) /* Device reset request */
|
|
#define FNIC_DEV_RST_ISSUED BIT(13)
|
|
#define FNIC_DEV_RST_TIMED_OUT BIT(14)
|
|
#define FNIC_DEV_RST_ABTS_ISSUED BIT(15)
|
|
#define FNIC_DEV_RST_TERM_ISSUED BIT(16)
|
|
#define FNIC_DEV_RST_DONE BIT(17)
|
|
#define FNIC_DEV_RST_REQ_NULL BIT(18)
|
|
#define FNIC_DEV_RST_ABTS_DONE BIT(19)
|
|
#define FNIC_DEV_RST_TERM_DONE BIT(20)
|
|
#define FNIC_DEV_RST_ABTS_PENDING BIT(21)
|
|
|
|
/*
|
|
* Usage of the scsi_cmnd scratchpad.
|
|
* These fields are locked by the hashed io_req_lock.
|
|
*/
|
|
#define CMD_SP(Cmnd) ((Cmnd)->SCp.ptr)
|
|
#define CMD_STATE(Cmnd) ((Cmnd)->SCp.phase)
|
|
#define CMD_ABTS_STATUS(Cmnd) ((Cmnd)->SCp.Message)
|
|
#define CMD_LR_STATUS(Cmnd) ((Cmnd)->SCp.have_data_in)
|
|
#define CMD_TAG(Cmnd) ((Cmnd)->SCp.sent_command)
|
|
#define CMD_FLAGS(Cmnd) ((Cmnd)->SCp.Status)
|
|
|
|
#define FCPIO_INVALID_CODE 0x100 /* hdr_status value unused by firmware */
|
|
|
|
#define FNIC_LUN_RESET_TIMEOUT 10000 /* mSec */
|
|
#define FNIC_HOST_RESET_TIMEOUT 10000 /* mSec */
|
|
#define FNIC_RMDEVICE_TIMEOUT 1000 /* mSec */
|
|
#define FNIC_HOST_RESET_SETTLE_TIME 30 /* Sec */
|
|
#define FNIC_ABT_TERM_DELAY_TIMEOUT 500 /* mSec */
|
|
|
|
#define FNIC_MAX_FCP_TARGET 256
|
|
|
|
/**
|
|
* state_flags to identify host state along along with fnic's state
|
|
**/
|
|
#define __FNIC_FLAGS_FWRESET BIT(0) /* fwreset in progress */
|
|
#define __FNIC_FLAGS_BLOCK_IO BIT(1) /* IOs are blocked */
|
|
|
|
#define FNIC_FLAGS_NONE (0)
|
|
#define FNIC_FLAGS_FWRESET (__FNIC_FLAGS_FWRESET | \
|
|
__FNIC_FLAGS_BLOCK_IO)
|
|
|
|
#define FNIC_FLAGS_IO_BLOCKED (__FNIC_FLAGS_BLOCK_IO)
|
|
|
|
#define fnic_set_state_flags(fnicp, st_flags) \
|
|
__fnic_set_state_flags(fnicp, st_flags, 0)
|
|
|
|
#define fnic_clear_state_flags(fnicp, st_flags) \
|
|
__fnic_set_state_flags(fnicp, st_flags, 1)
|
|
|
|
extern unsigned int fnic_log_level;
|
|
|
|
#define FNIC_MAIN_LOGGING 0x01
|
|
#define FNIC_FCS_LOGGING 0x02
|
|
#define FNIC_SCSI_LOGGING 0x04
|
|
#define FNIC_ISR_LOGGING 0x08
|
|
|
|
#define FNIC_CHECK_LOGGING(LEVEL, CMD) \
|
|
do { \
|
|
if (unlikely(fnic_log_level & LEVEL)) \
|
|
do { \
|
|
CMD; \
|
|
} while (0); \
|
|
} while (0)
|
|
|
|
#define FNIC_MAIN_DBG(kern_level, host, fmt, args...) \
|
|
FNIC_CHECK_LOGGING(FNIC_MAIN_LOGGING, \
|
|
shost_printk(kern_level, host, fmt, ##args);)
|
|
|
|
#define FNIC_FCS_DBG(kern_level, host, fmt, args...) \
|
|
FNIC_CHECK_LOGGING(FNIC_FCS_LOGGING, \
|
|
shost_printk(kern_level, host, fmt, ##args);)
|
|
|
|
#define FNIC_SCSI_DBG(kern_level, host, fmt, args...) \
|
|
FNIC_CHECK_LOGGING(FNIC_SCSI_LOGGING, \
|
|
shost_printk(kern_level, host, fmt, ##args);)
|
|
|
|
#define FNIC_ISR_DBG(kern_level, host, fmt, args...) \
|
|
FNIC_CHECK_LOGGING(FNIC_ISR_LOGGING, \
|
|
shost_printk(kern_level, host, fmt, ##args);)
|
|
|
|
#define FNIC_MAIN_NOTE(kern_level, host, fmt, args...) \
|
|
shost_printk(kern_level, host, fmt, ##args)
|
|
|
|
extern const char *fnic_state_str[];
|
|
|
|
enum fnic_intx_intr_index {
|
|
FNIC_INTX_WQ_RQ_COPYWQ,
|
|
FNIC_INTX_ERR,
|
|
FNIC_INTX_NOTIFY,
|
|
FNIC_INTX_INTR_MAX,
|
|
};
|
|
|
|
enum fnic_msix_intr_index {
|
|
FNIC_MSIX_RQ,
|
|
FNIC_MSIX_WQ,
|
|
FNIC_MSIX_WQ_COPY,
|
|
FNIC_MSIX_ERR_NOTIFY,
|
|
FNIC_MSIX_INTR_MAX,
|
|
};
|
|
|
|
struct fnic_msix_entry {
|
|
int requested;
|
|
char devname[IFNAMSIZ];
|
|
irqreturn_t (*isr)(int, void *);
|
|
void *devid;
|
|
};
|
|
|
|
enum fnic_state {
|
|
FNIC_IN_FC_MODE = 0,
|
|
FNIC_IN_FC_TRANS_ETH_MODE,
|
|
FNIC_IN_ETH_MODE,
|
|
FNIC_IN_ETH_TRANS_FC_MODE,
|
|
};
|
|
|
|
#define FNIC_WQ_COPY_MAX 1
|
|
#define FNIC_WQ_MAX 1
|
|
#define FNIC_RQ_MAX 1
|
|
#define FNIC_CQ_MAX (FNIC_WQ_COPY_MAX + FNIC_WQ_MAX + FNIC_RQ_MAX)
|
|
|
|
struct mempool;
|
|
|
|
enum fnic_evt {
|
|
FNIC_EVT_START_VLAN_DISC = 1,
|
|
FNIC_EVT_START_FCF_DISC = 2,
|
|
FNIC_EVT_MAX,
|
|
};
|
|
|
|
struct fnic_event {
|
|
struct list_head list;
|
|
struct fnic *fnic;
|
|
enum fnic_evt event;
|
|
};
|
|
|
|
/* Per-instance private data structure */
|
|
struct fnic {
|
|
struct fc_lport *lport;
|
|
struct fcoe_ctlr ctlr; /* FIP FCoE controller structure */
|
|
struct vnic_dev_bar bar0;
|
|
|
|
struct msix_entry msix_entry[FNIC_MSIX_INTR_MAX];
|
|
struct fnic_msix_entry msix[FNIC_MSIX_INTR_MAX];
|
|
|
|
struct vnic_stats *stats;
|
|
unsigned long stats_time; /* time of stats update */
|
|
unsigned long stats_reset_time; /* time of stats reset */
|
|
struct vnic_nic_cfg *nic_cfg;
|
|
char name[IFNAMSIZ];
|
|
struct timer_list notify_timer; /* used for MSI interrupts */
|
|
|
|
unsigned int fnic_max_tag_id;
|
|
unsigned int err_intr_offset;
|
|
unsigned int link_intr_offset;
|
|
|
|
unsigned int wq_count;
|
|
unsigned int cq_count;
|
|
|
|
struct dentry *fnic_stats_debugfs_host;
|
|
struct dentry *fnic_stats_debugfs_file;
|
|
struct dentry *fnic_reset_debugfs_file;
|
|
unsigned int reset_stats;
|
|
atomic64_t io_cmpl_skip;
|
|
struct fnic_stats fnic_stats;
|
|
|
|
u32 vlan_hw_insert:1; /* let hw insert the tag */
|
|
u32 in_remove:1; /* fnic device in removal */
|
|
u32 stop_rx_link_events:1; /* stop proc. rx frames, link events */
|
|
|
|
struct completion *remove_wait; /* device remove thread blocks */
|
|
|
|
atomic_t in_flight; /* io counter */
|
|
u32 _reserved; /* fill hole */
|
|
unsigned long state_flags; /* protected by host lock */
|
|
enum fnic_state state;
|
|
spinlock_t fnic_lock;
|
|
|
|
u16 vlan_id; /* VLAN tag including priority */
|
|
u8 data_src_addr[ETH_ALEN];
|
|
u64 fcp_input_bytes; /* internal statistic */
|
|
u64 fcp_output_bytes; /* internal statistic */
|
|
u32 link_down_cnt;
|
|
int link_status;
|
|
|
|
struct list_head list;
|
|
struct pci_dev *pdev;
|
|
struct vnic_fc_config config;
|
|
struct vnic_dev *vdev;
|
|
unsigned int raw_wq_count;
|
|
unsigned int wq_copy_count;
|
|
unsigned int rq_count;
|
|
int fw_ack_index[FNIC_WQ_COPY_MAX];
|
|
unsigned short fw_ack_recd[FNIC_WQ_COPY_MAX];
|
|
unsigned short wq_copy_desc_low[FNIC_WQ_COPY_MAX];
|
|
unsigned int intr_count;
|
|
u32 __iomem *legacy_pba;
|
|
struct fnic_host_tag *tags;
|
|
mempool_t *io_req_pool;
|
|
mempool_t *io_sgl_pool[FNIC_SGL_NUM_CACHES];
|
|
spinlock_t io_req_lock[FNIC_IO_LOCKS]; /* locks for scsi cmnds */
|
|
|
|
struct work_struct link_work;
|
|
struct work_struct frame_work;
|
|
struct sk_buff_head frame_queue;
|
|
struct sk_buff_head tx_queue;
|
|
|
|
/*** FIP related data members -- start ***/
|
|
void (*set_vlan)(struct fnic *, u16 vlan);
|
|
struct work_struct fip_frame_work;
|
|
struct sk_buff_head fip_frame_queue;
|
|
struct timer_list fip_timer;
|
|
struct list_head vlans;
|
|
spinlock_t vlans_lock;
|
|
|
|
struct work_struct event_work;
|
|
struct list_head evlist;
|
|
/*** FIP related data members -- end ***/
|
|
|
|
/* copy work queue cache line section */
|
|
____cacheline_aligned struct vnic_wq_copy wq_copy[FNIC_WQ_COPY_MAX];
|
|
/* completion queue cache line section */
|
|
____cacheline_aligned struct vnic_cq cq[FNIC_CQ_MAX];
|
|
|
|
spinlock_t wq_copy_lock[FNIC_WQ_COPY_MAX];
|
|
|
|
/* work queue cache line section */
|
|
____cacheline_aligned struct vnic_wq wq[FNIC_WQ_MAX];
|
|
spinlock_t wq_lock[FNIC_WQ_MAX];
|
|
|
|
/* receive queue cache line section */
|
|
____cacheline_aligned struct vnic_rq rq[FNIC_RQ_MAX];
|
|
|
|
/* interrupt resource cache line section */
|
|
____cacheline_aligned struct vnic_intr intr[FNIC_MSIX_INTR_MAX];
|
|
};
|
|
|
|
static inline struct fnic *fnic_from_ctlr(struct fcoe_ctlr *fip)
|
|
{
|
|
return container_of(fip, struct fnic, ctlr);
|
|
}
|
|
|
|
extern struct workqueue_struct *fnic_event_queue;
|
|
extern struct workqueue_struct *fnic_fip_queue;
|
|
extern struct device_attribute *fnic_attrs[];
|
|
|
|
void fnic_clear_intr_mode(struct fnic *fnic);
|
|
int fnic_set_intr_mode(struct fnic *fnic);
|
|
void fnic_free_intr(struct fnic *fnic);
|
|
int fnic_request_intr(struct fnic *fnic);
|
|
|
|
int fnic_send(struct fc_lport *, struct fc_frame *);
|
|
void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf);
|
|
void fnic_handle_frame(struct work_struct *work);
|
|
void fnic_handle_link(struct work_struct *work);
|
|
void fnic_handle_event(struct work_struct *work);
|
|
int fnic_rq_cmpl_handler(struct fnic *fnic, int);
|
|
int fnic_alloc_rq_frame(struct vnic_rq *rq);
|
|
void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf);
|
|
void fnic_flush_tx(struct fnic *);
|
|
void fnic_eth_send(struct fcoe_ctlr *, struct sk_buff *skb);
|
|
void fnic_set_port_id(struct fc_lport *, u32, struct fc_frame *);
|
|
void fnic_update_mac(struct fc_lport *, u8 *new);
|
|
void fnic_update_mac_locked(struct fnic *, u8 *new);
|
|
|
|
int fnic_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
|
|
int fnic_abort_cmd(struct scsi_cmnd *);
|
|
int fnic_device_reset(struct scsi_cmnd *);
|
|
int fnic_host_reset(struct scsi_cmnd *);
|
|
int fnic_reset(struct Scsi_Host *);
|
|
void fnic_scsi_cleanup(struct fc_lport *);
|
|
void fnic_scsi_abort_io(struct fc_lport *);
|
|
void fnic_empty_scsi_cleanup(struct fc_lport *);
|
|
void fnic_exch_mgr_reset(struct fc_lport *, u32, u32);
|
|
int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int);
|
|
int fnic_wq_cmpl_handler(struct fnic *fnic, int);
|
|
int fnic_flogi_reg_handler(struct fnic *fnic, u32);
|
|
void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq,
|
|
struct fcpio_host_req *desc);
|
|
int fnic_fw_reset_handler(struct fnic *fnic);
|
|
void fnic_terminate_rport_io(struct fc_rport *);
|
|
const char *fnic_state_to_str(unsigned int state);
|
|
|
|
void fnic_log_q_error(struct fnic *fnic);
|
|
void fnic_handle_link_event(struct fnic *fnic);
|
|
|
|
int fnic_is_abts_pending(struct fnic *, struct scsi_cmnd *);
|
|
|
|
void fnic_handle_fip_frame(struct work_struct *work);
|
|
void fnic_handle_fip_event(struct fnic *fnic);
|
|
void fnic_fcoe_reset_vlans(struct fnic *fnic);
|
|
void fnic_fcoe_evlist_free(struct fnic *fnic);
|
|
extern void fnic_handle_fip_timer(struct fnic *fnic);
|
|
|
|
static inline int
|
|
fnic_chk_state_flags_locked(struct fnic *fnic, unsigned long st_flags)
|
|
{
|
|
return ((fnic->state_flags & st_flags) == st_flags);
|
|
}
|
|
void __fnic_set_state_flags(struct fnic *, unsigned long, unsigned long);
|
|
void fnic_dump_fchost_stats(struct Scsi_Host *, struct fc_host_statistics *);
|
|
#endif /* _FNIC_H_ */
|