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Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

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* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (31 commits)
  [SCSI] qla2xxx: Update version number to 8.03.00-k4.
  [SCSI] qla2xxx: Correct overwrite of pre-assigned init-control-block structure size.
  [SCSI] qla2xxx: Correct truncation in return-code status checking.
  [SCSI] qla2xxx: Correct vport delete bug.
  [SCSI] qla2xxx: Use correct value for max vport in LOOP topology.
  [SCSI] qla2xxx: Correct address range checking for option-rom updates.
  [SCSI] fcoe: Change fcoe receive thread nice value from 19 (lowest priority) to -20
  [SCSI] fcoe: fix handling of pending queue, prevent out of order frames (v3)
  [SCSI] fcoe: Out of order tx frames was causing several check condition SCSI status
  [SCSI] fcoe: fix kfree(skb)
  [SCSI] fcoe: ETH_P_8021Q is already in if_ether and fcoe is not using it anyway
  [SCSI] libfc: do not change the fh_rx_id of a recevied frame
  [SCSI] fcoe: Correct fcoe_transports initialization vs. registration
  [SCSI] fcoe: Use setup_timer() and mod_timer()
  [SCSI] libfc, fcoe: Remove unnecessary cast by removing inline wrapper
  [SCSI] libfc, fcoe: Cleanup function formatting and minor typos
  [SCSI] libfc, fcoe: Fix kerneldoc comments
  [SCSI] libfc: Cleanup libfc_function_template comments
  [SCSI] libfc: check for err when recv and state is incorrect
  [SCSI] libfc: rename rp to rdata in fc_disc_new_target()
  ...
This commit is contained in:
Linus Torvalds 2009-03-14 12:01:37 -07:00
commit 228b5b7e84
19 changed files with 587 additions and 632 deletions
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91
drivers/scsi/fcoe/fc_transport_fcoe.c
View File

@ -33,19 +33,19 @@ static LIST_HEAD(fcoe_transports);
static DEFINE_MUTEX(fcoe_transports_lock);
/**
* fcoe_transport_default - returns ptr to the default transport fcoe_sw
**/
* fcoe_transport_default() - Returns ptr to the default transport fcoe_sw
*/
struct fcoe_transport *fcoe_transport_default(void)
{
return &fcoe_sw_transport;
}
/**
* fcoe_transport_to_pcidev - get the pci dev from a netdev
* fcoe_transport_to_pcidev() - get the pci dev from a netdev
* @netdev: the netdev that pci dev will be retrived from
*
* Returns: NULL or the corrsponding pci_dev
**/
*/
struct pci_dev *fcoe_transport_pcidev(const struct net_device *netdev)
{
if (!netdev->dev.parent)
@ -54,18 +54,17 @@ struct pci_dev *fcoe_transport_pcidev(const struct net_device *netdev)
}
/**
* fcoe_transport_device_lookup - find out netdev is managed by the
* transport
* assign a transport to a device
* fcoe_transport_device_lookup() - Lookup a transport
* @netdev: the netdev the transport to be attached to
*
* This will look for existing offload driver, if not found, it falls back to
* the default sw hba (fcoe_sw) as its fcoe transport.
*
* Returns: 0 for success
**/
static struct fcoe_transport_internal *fcoe_transport_device_lookup(
struct fcoe_transport *t, struct net_device *netdev)
*/
static struct fcoe_transport_internal *
fcoe_transport_device_lookup(struct fcoe_transport *t,
struct net_device *netdev)
{
struct fcoe_transport_internal *ti;
@ -81,14 +80,14 @@ static struct fcoe_transport_internal *fcoe_transport_device_lookup(
return NULL;
}
/**
* fcoe_transport_device_add - assign a transport to a device
* fcoe_transport_device_add() - Assign a transport to a device
* @netdev: the netdev the transport to be attached to
*
* This will look for existing offload driver, if not found, it falls back to
* the default sw hba (fcoe_sw) as its fcoe transport.
*
* Returns: 0 for success
**/
*/
static int fcoe_transport_device_add(struct fcoe_transport *t,
struct net_device *netdev)
{
@ -123,14 +122,14 @@ static int fcoe_transport_device_add(struct fcoe_transport *t,
}
/**
* fcoe_transport_device_remove - remove a device from its transport
* fcoe_transport_device_remove() - Remove a device from its transport
* @netdev: the netdev the transport to be attached to
*
* this removes the device from the transport so the given transport will
* This removes the device from the transport so the given transport will
* not manage this device any more
*
* Returns: 0 for success
**/
*/
static int fcoe_transport_device_remove(struct fcoe_transport *t,
struct net_device *netdev)
{
@ -155,13 +154,13 @@ static int fcoe_transport_device_remove(struct fcoe_transport *t,
}
/**
* fcoe_transport_device_remove_all - remove all from transport devlist
* fcoe_transport_device_remove_all() - Remove all from transport devlist
*
* this removes the device from the transport so the given transport will
* This removes the device from the transport so the given transport will
* not manage this device any more
*
* Returns: 0 for success
**/
*/
static void fcoe_transport_device_remove_all(struct fcoe_transport *t)
{
struct fcoe_transport_internal *ti, *tmp;
@ -175,18 +174,18 @@ static void fcoe_transport_device_remove_all(struct fcoe_transport *t)
}
/**
* fcoe_transport_match - use the bus device match function to match the hw
* @t: the fcoe transport
* @netdev:
* fcoe_transport_match() - Use the bus device match function to match the hw
* @t: The fcoe transport to check
* @netdev: The netdev to match against
*
* This function is used to check if the givne transport wants to manage the
* This function is used to check if the given transport wants to manage the
* input netdev. if the transports implements the match function, it will be
* called, o.w. we just compare the pci vendor and device id.
*
* Returns: true for match up
**/
*/
static bool fcoe_transport_match(struct fcoe_transport *t,
struct net_device *netdev)
struct net_device *netdev)
{
/* match transport by vendor and device id */
struct pci_dev *pci;
@ -210,17 +209,17 @@ static bool fcoe_transport_match(struct fcoe_transport *t,
}
/**
* fcoe_transport_lookup - check if the transport is already registered
* fcoe_transport_lookup() - Check if the transport is already registered
* @t: the transport to be looked up
*
* This compares the parent device (pci) vendor and device id
*
* Returns: NULL if not found
*
* TODO - return default sw transport if no other transport is found
**/
static struct fcoe_transport *fcoe_transport_lookup(
struct net_device *netdev)
* TODO: return default sw transport if no other transport is found
*/
static struct fcoe_transport *
fcoe_transport_lookup(struct net_device *netdev)
{
struct fcoe_transport *t;
@ -239,11 +238,11 @@ static struct fcoe_transport *fcoe_transport_lookup(
}
/**
* fcoe_transport_register - adds a fcoe transport to the fcoe transports list
* fcoe_transport_register() - Adds a fcoe transport to the fcoe transports list
* @t: ptr to the fcoe transport to be added
*
* Returns: 0 for success
**/
*/
int fcoe_transport_register(struct fcoe_transport *t)
{
struct fcoe_transport *tt;
@ -259,9 +258,6 @@ int fcoe_transport_register(struct fcoe_transport *t)
list_add_tail(&t->list, &fcoe_transports);
mutex_unlock(&fcoe_transports_lock);
mutex_init(&t->devlock);
INIT_LIST_HEAD(&t->devlist);
printk(KERN_DEBUG "fcoe_transport_register:%s\n", t->name);
return 0;
@ -269,11 +265,11 @@ int fcoe_transport_register(struct fcoe_transport *t)
EXPORT_SYMBOL_GPL(fcoe_transport_register);
/**
* fcoe_transport_unregister - remove the tranport fro the fcoe transports list
* fcoe_transport_unregister() - Remove the tranport fro the fcoe transports list
* @t: ptr to the fcoe transport to be removed
*
* Returns: 0 for success
**/
*/
int fcoe_transport_unregister(struct fcoe_transport *t)
{
struct fcoe_transport *tt, *tmp;
@ -294,8 +290,8 @@ int fcoe_transport_unregister(struct fcoe_transport *t)
}
EXPORT_SYMBOL_GPL(fcoe_transport_unregister);
/*
* fcoe_load_transport_driver - load an offload driver by alias name
/**
* fcoe_load_transport_driver() - Load an offload driver by alias name
* @netdev: the target net device
*
* Requests for an offload driver module as the fcoe transport, if fails, it
@ -307,7 +303,7 @@ EXPORT_SYMBOL_GPL(fcoe_transport_unregister);
* 3. pure hw fcoe hba may not have netdev
*
* Returns: 0 for success
**/
*/
int fcoe_load_transport_driver(struct net_device *netdev)
{
struct pci_dev *pci;
@ -335,14 +331,14 @@ int fcoe_load_transport_driver(struct net_device *netdev)
EXPORT_SYMBOL_GPL(fcoe_load_transport_driver);
/**
* fcoe_transport_attach - load transport to fcoe
* fcoe_transport_attach() - Load transport to fcoe
* @netdev: the netdev the transport to be attached to
*
* This will look for existing offload driver, if not found, it falls back to
* the default sw hba (fcoe_sw) as its fcoe transport.
*
* Returns: 0 for success
**/
*/
int fcoe_transport_attach(struct net_device *netdev)
{
struct fcoe_transport *t;
@ -373,11 +369,11 @@ int fcoe_transport_attach(struct net_device *netdev)
EXPORT_SYMBOL_GPL(fcoe_transport_attach);
/**
* fcoe_transport_release - unload transport from fcoe
* fcoe_transport_release() - Unload transport from fcoe
* @netdev: the net device on which fcoe is to be released
*
* Returns: 0 for success
**/
*/
int fcoe_transport_release(struct net_device *netdev)
{
struct fcoe_transport *t;
@ -410,12 +406,12 @@ int fcoe_transport_release(struct net_device *netdev)
EXPORT_SYMBOL_GPL(fcoe_transport_release);
/**
* fcoe_transport_init - initializes fcoe transport layer
* fcoe_transport_init() - Initializes fcoe transport layer
*
* This prepares for the fcoe transport layer
*
* Returns: none
**/
*/
int __init fcoe_transport_init(void)
{
INIT_LIST_HEAD(&fcoe_transports);
@ -424,12 +420,13 @@ int __init fcoe_transport_init(void)
}
/**
* fcoe_transport_exit - cleans up the fcoe transport layer
* fcoe_transport_exit() - Cleans up the fcoe transport layer
*
* This cleans up the fcoe transport layer. removing any transport on the list,
* note that the transport destroy func is not called here.
*
* Returns: none
**/
*/
int __exit fcoe_transport_exit(void)
{
struct fcoe_transport *t, *tmp;

56
drivers/scsi/fcoe/fcoe_sw.c
View File

@ -104,19 +104,19 @@ static struct scsi_host_template fcoe_sw_shost_template = {
.max_sectors = 0xffff,
};
/*
* fcoe_sw_lport_config - sets up the fc_lport
/**
* fcoe_sw_lport_config() - sets up the fc_lport
* @lp: ptr to the fc_lport
* @shost: ptr to the parent scsi host
*
* Returns: 0 for success
*
*/
static int fcoe_sw_lport_config(struct fc_lport *lp)
{
int i = 0;
lp->link_status = 0;
lp->link_up = 0;
lp->qfull = 0;
lp->max_retry_count = 3;
lp->e_d_tov = 2 * 1000; /* FC-FS default */
lp->r_a_tov = 2 * 2 * 1000;
@ -136,16 +136,14 @@ static int fcoe_sw_lport_config(struct fc_lport *lp)
return 0;
}
/*
* fcoe_sw_netdev_config - sets up fcoe_softc for lport and network
* related properties
/**
* fcoe_sw_netdev_config() - Set up netdev for SW FCoE
* @lp : ptr to the fc_lport
* @netdev : ptr to the associated netdevice struct
*
* Must be called after fcoe_sw_lport_config() as it will use lport mutex
*
* Returns : 0 for success
*
*/
static int fcoe_sw_netdev_config(struct fc_lport *lp, struct net_device *netdev)
{
@ -181,9 +179,8 @@ static int fcoe_sw_netdev_config(struct fc_lport *lp, struct net_device *netdev)
if (fc_set_mfs(lp, mfs))
return -EINVAL;
lp->link_status = ~FC_PAUSE & ~FC_LINK_UP;
if (!fcoe_link_ok(lp))
lp->link_status |= FC_LINK_UP;
lp->link_up = 1;
/* offload features support */
if (fc->real_dev->features & NETIF_F_SG)
@ -191,6 +188,7 @@ static int fcoe_sw_netdev_config(struct fc_lport *lp, struct net_device *netdev)
skb_queue_head_init(&fc->fcoe_pending_queue);
fc->fcoe_pending_queue_active = 0;
/* setup Source Mac Address */
memcpy(fc->ctl_src_addr, fc->real_dev->dev_addr,
@ -224,16 +222,15 @@ static int fcoe_sw_netdev_config(struct fc_lport *lp, struct net_device *netdev)
return 0;
}
/*
* fcoe_sw_shost_config - sets up fc_lport->host
/**
* fcoe_sw_shost_config() - Sets up fc_lport->host
* @lp : ptr to the fc_lport
* @shost : ptr to the associated scsi host
* @dev : device associated to scsi host
*
* Must be called after fcoe_sw_lport_config) and fcoe_sw_netdev_config()
* Must be called after fcoe_sw_lport_config() and fcoe_sw_netdev_config()
*
* Returns : 0 for success
*
*/
static int fcoe_sw_shost_config(struct fc_lport *lp, struct Scsi_Host *shost,
struct device *dev)
@ -261,8 +258,8 @@ static int fcoe_sw_shost_config(struct fc_lport *lp, struct Scsi_Host *shost,
return 0;
}
/*
* fcoe_sw_em_config - allocates em for this lport
/**
* fcoe_sw_em_config() - allocates em for this lport
* @lp: the port that em is to allocated for
*
* Returns : 0 on success
@ -279,8 +276,8 @@ static inline int fcoe_sw_em_config(struct fc_lport *lp)
return 0;
}
/*
* fcoe_sw_destroy - FCoE software HBA tear-down function
/**
* fcoe_sw_destroy() - FCoE software HBA tear-down function
* @netdev: ptr to the associated net_device
*
* Returns: 0 if link is OK for use by FCoE.
@ -301,7 +298,7 @@ static int fcoe_sw_destroy(struct net_device *netdev)
if (!lp)
return -ENODEV;
fc = fcoe_softc(lp);
fc = lport_priv(lp);
/* Logout of the fabric */
fc_fabric_logoff(lp);
@ -353,8 +350,8 @@ static struct libfc_function_template fcoe_sw_libfc_fcn_templ = {
.frame_send = fcoe_xmit,
};
/*
* fcoe_sw_create - this function creates the fcoe interface
/**
* fcoe_sw_create() - this function creates the fcoe interface
* @netdev: pointer the associated netdevice
*
* Creates fc_lport struct and scsi_host for lport, configures lport
@ -440,8 +437,8 @@ out_host_put:
return rc;
}
/*
* fcoe_sw_match - the fcoe sw transport match function
/**
* fcoe_sw_match() - The FCoE SW transport match function
*
* Returns : false always
*/
@ -461,8 +458,8 @@ struct fcoe_transport fcoe_sw_transport = {
.device = 0xffff,
};
/*
* fcoe_sw_init - registers fcoe_sw_transport
/**
* fcoe_sw_init() - Registers fcoe_sw_transport
*
* Returns : 0 on success
*/
@ -471,17 +468,22 @@ int __init fcoe_sw_init(void)
/* attach to scsi transport */
scsi_transport_fcoe_sw =
fc_attach_transport(&fcoe_sw_transport_function);
if (!scsi_transport_fcoe_sw) {
printk(KERN_ERR "fcoe_sw_init:fc_attach_transport() failed\n");
return -ENODEV;
}
mutex_init(&fcoe_sw_transport.devlock);
INIT_LIST_HEAD(&fcoe_sw_transport.devlist);
/* register sw transport */
fcoe_transport_register(&fcoe_sw_transport);
return 0;
}
/*
* fcoe_sw_exit - unregisters fcoe_sw_transport
/**
* fcoe_sw_exit() - Unregisters fcoe_sw_transport
*
* Returns : 0 on success
*/

320
drivers/scsi/fcoe/libfcoe.c
View File

@ -49,6 +49,7 @@
static int debug_fcoe;
#define FCOE_MAX_QUEUE_DEPTH 256
#define FCOE_LOW_QUEUE_DEPTH 32
/* destination address mode */
#define FCOE_GW_ADDR_MODE 0x00
@ -69,8 +70,6 @@ struct fcoe_percpu_s *fcoe_percpu[NR_CPUS];
/* Function Prototyes */
static int fcoe_check_wait_queue(struct fc_lport *);
static void fcoe_insert_wait_queue_head(struct fc_lport *, struct sk_buff *);
static void fcoe_insert_wait_queue(struct fc_lport *, struct sk_buff *);
static void fcoe_recv_flogi(struct fcoe_softc *, struct fc_frame *, u8 *);
#ifdef CONFIG_HOTPLUG_CPU
static int fcoe_cpu_callback(struct notifier_block *, ulong, void *);
@ -91,13 +90,13 @@ static struct notifier_block fcoe_cpu_notifier = {
};
/**
* fcoe_create_percpu_data - creates the associated cpu data
* fcoe_create_percpu_data() - creates the associated cpu data
* @cpu: index for the cpu where fcoe cpu data will be created
*
* create percpu stats block, from cpu add notifier
*
* Returns: none
**/
*/
static void fcoe_create_percpu_data(int cpu)
{
struct fc_lport *lp;
@ -115,13 +114,13 @@ static void fcoe_create_percpu_data(int cpu)
}
/**
* fcoe_destroy_percpu_data - destroys the associated cpu data
* fcoe_destroy_percpu_data() - destroys the associated cpu data
* @cpu: index for the cpu where fcoe cpu data will destroyed
*
* destroy percpu stats block called by cpu add/remove notifier
*
* Retuns: none
**/
*/
static void fcoe_destroy_percpu_data(int cpu)
{
struct fc_lport *lp;
@ -137,7 +136,7 @@ static void fcoe_destroy_percpu_data(int cpu)
}
/**
* fcoe_cpu_callback - fcoe cpu hotplug event callback
* fcoe_cpu_callback() - fcoe cpu hotplug event callback
* @nfb: callback data block
* @action: event triggering the callback
* @hcpu: index for the cpu of this event
@ -145,7 +144,7 @@ static void fcoe_destroy_percpu_data(int cpu)
* this creates or destroys per cpu data for fcoe
*
* Returns NOTIFY_OK always.
**/
*/
static int fcoe_cpu_callback(struct notifier_block *nfb, unsigned long action,
void *hcpu)
{
@ -166,7 +165,7 @@ static int fcoe_cpu_callback(struct notifier_block *nfb, unsigned long action,
#endif /* CONFIG_HOTPLUG_CPU */
/**
* fcoe_rcv - this is the fcoe receive function called by NET_RX_SOFTIRQ
* fcoe_rcv() - this is the fcoe receive function called by NET_RX_SOFTIRQ
* @skb: the receive skb
* @dev: associated net device
* @ptype: context
@ -175,7 +174,7 @@ static int fcoe_cpu_callback(struct notifier_block *nfb, unsigned long action,
* this function will receive the packet and build fc frame and pass it up
*
* Returns: 0 for success
**/
*/
int fcoe_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *ptype, struct net_device *olddev)
{
@ -265,11 +264,11 @@ err2:
EXPORT_SYMBOL_GPL(fcoe_rcv);
/**
* fcoe_start_io - pass to netdev to start xmit for fcoe
* fcoe_start_io() - pass to netdev to start xmit for fcoe
* @skb: the skb to be xmitted
*
* Returns: 0 for success
**/
*/
static inline int fcoe_start_io(struct sk_buff *skb)
{
int rc;
@ -283,12 +282,12 @@ static inline int fcoe_start_io(struct sk_buff *skb)
}
/**
* fcoe_get_paged_crc_eof - in case we need alloc a page for crc_eof
* fcoe_get_paged_crc_eof() - in case we need alloc a page for crc_eof
* @skb: the skb to be xmitted
* @tlen: total len
*
* Returns: 0 for success
**/
*/
static int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen)
{
struct fcoe_percpu_s *fps;
@ -326,13 +325,12 @@ static int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen)
}
/**
* fcoe_fc_crc - calculates FC CRC in this fcoe skb
* fcoe_fc_crc() - calculates FC CRC in this fcoe skb
* @fp: the fc_frame containg data to be checksummed
*
* This uses crc32() to calculate the crc for fc frame
* Return : 32 bit crc
*
**/
*/
u32 fcoe_fc_crc(struct fc_frame *fp)
{
struct sk_buff *skb = fp_skb(fp);
@ -363,13 +361,12 @@ u32 fcoe_fc_crc(struct fc_frame *fp)
EXPORT_SYMBOL_GPL(fcoe_fc_crc);
/**
* fcoe_xmit - FCoE frame transmit function
* fcoe_xmit() - FCoE frame transmit function
* @lp: the associated local port
* @fp: the fc_frame to be transmitted
*
* Return : 0 for success
*
**/
*/
int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
{
int wlen, rc = 0;
@ -389,7 +386,7 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
WARN_ON((fr_len(fp) % sizeof(u32)) != 0);
fc = fcoe_softc(lp);
fc = lport_priv(lp);
/*
* if it is a flogi then we need to learn gw-addr
* and my own fcid
@ -439,7 +436,7 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
if (skb_is_nonlinear(skb)) {
skb_frag_t *frag;
if (fcoe_get_paged_crc_eof(skb, tlen)) {
kfree(skb);
kfree_skb(skb);
return -ENOMEM;
}
frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
@ -502,21 +499,22 @@ int fcoe_xmit(struct fc_lport *lp, struct fc_frame *fp)
rc = fcoe_start_io(skb);
if (rc) {
fcoe_insert_wait_queue(lp, skb);
spin_lock_bh(&fc->fcoe_pending_queue.lock);
__skb_queue_tail(&fc->fcoe_pending_queue, skb);
spin_unlock_bh(&fc->fcoe_pending_queue.lock);
if (fc->fcoe_pending_queue.qlen > FCOE_MAX_QUEUE_DEPTH)
fc_pause(lp);
lp->qfull = 1;
}
return 0;
}
EXPORT_SYMBOL_GPL(fcoe_xmit);
/*
* fcoe_percpu_receive_thread - recv thread per cpu
/**
* fcoe_percpu_receive_thread() - recv thread per cpu
* @arg: ptr to the fcoe per cpu struct
*
* Return: 0 for success
*
*/
int fcoe_percpu_receive_thread(void *arg)
{
@ -533,7 +531,7 @@ int fcoe_percpu_receive_thread(void *arg)
struct fcoe_softc *fc;
struct fcoe_hdr *hp;
set_user_nice(current, 19);
set_user_nice(current, -20);
while (!kthread_should_stop()) {
@ -658,7 +656,7 @@ int fcoe_percpu_receive_thread(void *arg)
}
/**
* fcoe_recv_flogi - flogi receive function
* fcoe_recv_flogi() - flogi receive function
* @fc: associated fcoe_softc
* @fp: the recieved frame
* @sa: the source address of this flogi
@ -667,7 +665,7 @@ int fcoe_percpu_receive_thread(void *arg)
* mac address for the initiator, eitehr OUI based or GW based.
*
* Returns: none
**/
*/
static void fcoe_recv_flogi(struct fcoe_softc *fc, struct fc_frame *fp, u8 *sa)
{
struct fc_frame_header *fh;
@ -715,32 +713,23 @@ static void fcoe_recv_flogi(struct fcoe_softc *fc, struct fc_frame *fp, u8 *sa)
}
/**
* fcoe_watchdog - fcoe timer callback
* fcoe_watchdog() - fcoe timer callback
* @vp:
*
* This checks the pending queue length for fcoe and put fcoe to be paused state
* This checks the pending queue length for fcoe and set lport qfull
* if the FCOE_MAX_QUEUE_DEPTH is reached. This is done for all fc_lport on the
* fcoe_hostlist.
*
* Returns: 0 for success
**/
*/
void fcoe_watchdog(ulong vp)
{
struct fc_lport *lp;
struct fcoe_softc *fc;
int paused = 0;
read_lock(&fcoe_hostlist_lock);
list_for_each_entry(fc, &fcoe_hostlist, list) {
lp = fc->lp;
if (lp) {
if (fc->fcoe_pending_queue.qlen > FCOE_MAX_QUEUE_DEPTH)
paused = 1;
if (fcoe_check_wait_queue(lp) < FCOE_MAX_QUEUE_DEPTH) {
if (paused)
fc_unpause(lp);
}
}
if (fc->lp)
fcoe_check_wait_queue(fc->lp);
}
read_unlock(&fcoe_hostlist_lock);
@ -750,96 +739,64 @@ void fcoe_watchdog(ulong vp)
/**
* fcoe_check_wait_queue - put the skb into fcoe pending xmit queue
* fcoe_check_wait_queue() - put the skb into fcoe pending xmit queue
* @lp: the fc_port for this skb
* @skb: the associated skb to be xmitted
*
* This empties the wait_queue, dequeue the head of the wait_queue queue
* and calls fcoe_start_io() for each packet, if all skb have been
* transmitted, return 0 if a error occurs, then restore wait_queue and
* try again later.
* transmitted, return qlen or -1 if a error occurs, then restore
* wait_queue and try again later.
*
* The wait_queue is used when the skb transmit fails. skb will go
* in the wait_queue which will be emptied by the time function OR
* by the next skb transmit.
*
* Returns: 0 for success
**/
*/
static int fcoe_check_wait_queue(struct fc_lport *lp)
{
int rc, unpause = 0;
int paused = 0;
struct fcoe_softc *fc = lport_priv(lp);
struct sk_buff *skb;
struct fcoe_softc *fc;
int rc = -1;
fc = fcoe_softc(lp);
spin_lock_bh(&fc->fcoe_pending_queue.lock);
if (fc->fcoe_pending_queue_active)
goto out;
fc->fcoe_pending_queue_active = 1;
/*
* is this interface paused?
*/
if (fc->fcoe_pending_queue.qlen > FCOE_MAX_QUEUE_DEPTH)
paused = 1;
if (fc->fcoe_pending_queue.qlen) {
while ((skb = __skb_dequeue(&fc->fcoe_pending_queue)) != NULL) {
spin_unlock_bh(&fc->fcoe_pending_queue.lock);
rc = fcoe_start_io(skb);
if (rc) {
fcoe_insert_wait_queue_head(lp, skb);
return rc;
}
spin_lock_bh(&fc->fcoe_pending_queue.lock);
while (fc->fcoe_pending_queue.qlen) {
/* keep qlen > 0 until fcoe_start_io succeeds */
fc->fcoe_pending_queue.qlen++;
skb = __skb_dequeue(&fc->fcoe_pending_queue);
spin_unlock_bh(&fc->fcoe_pending_queue.lock);
rc = fcoe_start_io(skb);
spin_lock_bh(&fc->fcoe_pending_queue.lock);
if (rc) {
__skb_queue_head(&fc->fcoe_pending_queue, skb);
/* undo temporary increment above */
fc->fcoe_pending_queue.qlen--;
break;
}
if (fc->fcoe_pending_queue.qlen < FCOE_MAX_QUEUE_DEPTH)
unpause = 1;
/* undo temporary increment above */
fc->fcoe_pending_queue.qlen--;
}
if (fc->fcoe_pending_queue.qlen < FCOE_LOW_QUEUE_DEPTH)
lp->qfull = 0;
fc->fcoe_pending_queue_active = 0;
rc = fc->fcoe_pending_queue.qlen;
out:
spin_unlock_bh(&fc->fcoe_pending_queue.lock);
if ((unpause) && (paused))
fc_unpause(lp);
return fc->fcoe_pending_queue.qlen;
return rc;
}
/**
* fcoe_insert_wait_queue_head - puts skb to fcoe pending queue head
* @lp: the fc_port for this skb
* @skb: the associated skb to be xmitted
*
* Returns: none
**/
static void fcoe_insert_wait_queue_head(struct fc_lport *lp,
struct sk_buff *skb)
{
struct fcoe_softc *fc;
fc = fcoe_softc(lp);
spin_lock_bh(&fc->fcoe_pending_queue.lock);
__skb_queue_head(&fc->fcoe_pending_queue, skb);
spin_unlock_bh(&fc->fcoe_pending_queue.lock);
}
/**
* fcoe_insert_wait_queue - put the skb into fcoe pending queue tail
* @lp: the fc_port for this skb
* @skb: the associated skb to be xmitted
*
* Returns: none
**/
static void fcoe_insert_wait_queue(struct fc_lport *lp,
struct sk_buff *skb)
{
struct fcoe_softc *fc;
fc = fcoe_softc(lp);
spin_lock_bh(&fc->fcoe_pending_queue.lock);
__skb_queue_tail(&fc->fcoe_pending_queue, skb);
spin_unlock_bh(&fc->fcoe_pending_queue.lock);
}
/**
* fcoe_dev_setup - setup link change notification interface
*
**/
static void fcoe_dev_setup(void)
* fcoe_dev_setup() - setup link change notification interface
*/
static void fcoe_dev_setup()
{
/*
* here setup a interface specific wd time to
@ -849,15 +806,15 @@ static void fcoe_dev_setup(void)
}
/**
* fcoe_dev_setup - cleanup link change notification interface
**/
* fcoe_dev_setup() - cleanup link change notification interface
*/
static void fcoe_dev_cleanup(void)
{
unregister_netdevice_notifier(&fcoe_notifier);
}
/**
* fcoe_device_notification - netdev event notification callback
* fcoe_device_notification() - netdev event notification callback
* @notifier: context of the notification
* @event: type of event
* @ptr: fixed array for output parsed ifname
@ -865,7 +822,7 @@ static void fcoe_dev_cleanup(void)
* This function is called by the ethernet driver in case of link change event
*
* Returns: 0 for success
**/
*/
static int fcoe_device_notification(struct notifier_block *notifier,
ulong event, void *ptr)
{
@ -873,7 +830,7 @@ static int fcoe_device_notification(struct notifier_block *notifier,
struct net_device *real_dev = ptr;
struct fcoe_softc *fc;
struct fcoe_dev_stats *stats;
u16 new_status;
u32 new_link_up;
u32 mfs;
int rc = NOTIFY_OK;
@ -890,17 +847,15 @@ static int fcoe_device_notification(struct notifier_block *notifier,
goto out;
}
new_status = lp->link_status;
new_link_up = lp->link_up;
switch (event) {
case NETDEV_DOWN:
case NETDEV_GOING_DOWN:
new_status &= ~FC_LINK_UP;
new_link_up = 0;
break;
case NETDEV_UP:
case NETDEV_CHANGE:
new_status &= ~FC_LINK_UP;
if (!fcoe_link_ok(lp))
new_status |= FC_LINK_UP;
new_link_up = !fcoe_link_ok(lp);
break;
case NETDEV_CHANGEMTU:
mfs = fc->real_dev->mtu -
@ -908,17 +863,15 @@ static int fcoe_device_notification(struct notifier_block *notifier,
sizeof(struct fcoe_crc_eof));
if (mfs >= FC_MIN_MAX_FRAME)
fc_set_mfs(lp, mfs);
new_status &= ~FC_LINK_UP;
if (!fcoe_link_ok(lp))
new_status |= FC_LINK_UP;
new_link_up = !fcoe_link_ok(lp);
break;
case NETDEV_REGISTER:
break;
default:
FC_DBG("unknown event %ld call", event);
}
if (lp->link_status != new_status) {
if ((new_status & FC_LINK_UP) == FC_LINK_UP)
if (lp->link_up != new_link_up) {
if (new_link_up)
fc_linkup(lp);
else {
stats = lp->dev_stats[smp_processor_id()];
@ -933,12 +886,12 @@ out:
}
/**
* fcoe_if_to_netdev - parse a name buffer to get netdev
* fcoe_if_to_netdev() - parse a name buffer to get netdev
* @ifname: fixed array for output parsed ifname
* @buffer: incoming buffer to be copied
*
* Returns: NULL or ptr to netdeive
**/
*/
static struct net_device *fcoe_if_to_netdev(const char *buffer)
{
char *cp;
@ -955,13 +908,13 @@ static struct net_device *fcoe_if_to_netdev(const char *buffer)
}
/**
* fcoe_netdev_to_module_owner - finds out the nic drive moddule of the netdev
* fcoe_netdev_to_module_owner() - finds out the nic drive moddule of the netdev
* @netdev: the target netdev
*
* Returns: ptr to the struct module, NULL for failure
**/
static struct module *fcoe_netdev_to_module_owner(
const struct net_device *netdev)
*/
static struct module *
fcoe_netdev_to_module_owner(const struct net_device *netdev)
{
struct device *dev;
@ -979,12 +932,14 @@ static struct module *fcoe_netdev_to_module_owner(
}
/**
* fcoe_ethdrv_get - holds the nic driver module by try_module_get() for
* the corresponding netdev.
* fcoe_ethdrv_get() - Hold the Ethernet driver
* @netdev: the target netdev
*
* Holds the Ethernet driver module by try_module_get() for
* the corresponding netdev.
*
* Returns: 0 for succsss
**/
*/
static int fcoe_ethdrv_get(const struct net_device *netdev)
{
struct module *owner;
@ -999,12 +954,14 @@ static int fcoe_ethdrv_get(const struct net_device *netdev)
}
/**
* fcoe_ethdrv_get - releases the nic driver module by module_put for
* the corresponding netdev.
* fcoe_ethdrv_put() - Release the Ethernet driver
* @netdev: the target netdev
*
* Releases the Ethernet driver module by module_put for
* the corresponding netdev.
*
* Returns: 0 for succsss
**/
*/
static int fcoe_ethdrv_put(const struct net_device *netdev)
{
struct module *owner;
@ -1020,12 +977,12 @@ static int fcoe_ethdrv_put(const struct net_device *netdev)
}
/**
* fcoe_destroy- handles the destroy from sysfs
* fcoe_destroy() - handles the destroy from sysfs
* @buffer: expcted to be a eth if name
* @kp: associated kernel param
*
* Returns: 0 for success
**/
*/
static int fcoe_destroy(const char *buffer, struct kernel_param *kp)
{
int rc;
@ -1058,12 +1015,12 @@ out_nodev:
}
/**
* fcoe_create - handles the create call from sysfs
* fcoe_create() - Handles the create call from sysfs
* @buffer: expcted to be a eth if name
* @kp: associated kernel param
*
* Returns: 0 for success
**/
*/
static int fcoe_create(const char *buffer, struct kernel_param *kp)
{
int rc;
@ -1104,8 +1061,8 @@ module_param_call(destroy, fcoe_destroy, NULL, NULL, S_IWUSR);
__MODULE_PARM_TYPE(destroy, "string");
MODULE_PARM_DESC(destroy, "Destroy fcoe port");
/*
* fcoe_link_ok - check if link is ok for the fc_lport
/**
* fcoe_link_ok() - Check if link is ok for the fc_lport
* @lp: ptr to the fc_lport
*
* Any permanently-disqualifying conditions have been previously checked.
@ -1120,7 +1077,7 @@ MODULE_PARM_DESC(destroy, "Destroy fcoe port");
*/
int fcoe_link_ok(struct fc_lport *lp)
{
struct fcoe_softc *fc = fcoe_softc(lp);
struct fcoe_softc *fc = lport_priv(lp);
struct net_device *dev = fc->real_dev;
struct ethtool_cmd ecmd = { ETHTOOL_GSET };
int rc = 0;
@ -1149,9 +1106,8 @@ int fcoe_link_ok(struct fc_lport *lp)
}
EXPORT_SYMBOL_GPL(fcoe_link_ok);
/*
* fcoe_percpu_clean - frees skb of the corresponding lport from the per
* cpu queue.
/**
* fcoe_percpu_clean() - Clear the pending skbs for an lport
* @lp: the fc_lport
*/
void fcoe_percpu_clean(struct fc_lport *lp)
@ -1185,11 +1141,11 @@ void fcoe_percpu_clean(struct fc_lport *lp)
EXPORT_SYMBOL_GPL(fcoe_percpu_clean);
/**
* fcoe_clean_pending_queue - dequeue skb and free it
* fcoe_clean_pending_queue() - Dequeue a skb and free it
* @lp: the corresponding fc_lport
*
* Returns: none
**/
*/
void fcoe_clean_pending_queue(struct fc_lport *lp)
{
struct fcoe_softc *fc = lport_priv(lp);
@ -1206,21 +1162,21 @@ void fcoe_clean_pending_queue(struct fc_lport *lp)
EXPORT_SYMBOL_GPL(fcoe_clean_pending_queue);
/**
* libfc_host_alloc - allocate a Scsi_Host with room for the fc_lport
* libfc_host_alloc() - Allocate a Scsi_Host with room for the fc_lport
* @sht: ptr to the scsi host templ
* @priv_size: size of private data after fc_lport
*
* Returns: ptr to Scsi_Host
* TODO - to libfc?
* TODO: to libfc?
*/
static inline struct Scsi_Host *libfc_host_alloc(
struct scsi_host_template *sht, int priv_size)
static inline struct Scsi_Host *
libfc_host_alloc(struct scsi_host_template *sht, int priv_size)
{
return scsi_host_alloc(sht, sizeof(struct fc_lport) + priv_size);
}
/**
* fcoe_host_alloc - allocate a Scsi_Host with room for the fcoe_softc
* fcoe_host_alloc() - Allocate a Scsi_Host with room for the fcoe_softc
* @sht: ptr to the scsi host templ
* @priv_size: size of private data after fc_lport
*
@ -1232,8 +1188,8 @@ struct Scsi_Host *fcoe_host_alloc(struct scsi_host_template *sht, int priv_size)
}
EXPORT_SYMBOL_GPL(fcoe_host_alloc);
/*
* fcoe_reset - resets the fcoe
/**
* fcoe_reset() - Resets the fcoe
* @shost: shost the reset is from
*
* Returns: always 0
@ -1246,8 +1202,8 @@ int fcoe_reset(struct Scsi_Host *shost)
}
EXPORT_SYMBOL_GPL(fcoe_reset);
/*
* fcoe_wwn_from_mac - converts 48-bit IEEE MAC address to 64-bit FC WWN.
/**
* fcoe_wwn_from_mac() - Converts 48-bit IEEE MAC address to 64-bit FC WWN.
* @mac: mac address
* @scheme: check port
* @port: port indicator for converting
@ -1286,14 +1242,15 @@ u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN],
return wwn;
}
EXPORT_SYMBOL_GPL(fcoe_wwn_from_mac);
/*
* fcoe_hostlist_lookup_softc - find the corresponding lport by a given device
/**
* fcoe_hostlist_lookup_softc() - find the corresponding lport by a given device
* @device: this is currently ptr to net_device
*
* Returns: NULL or the located fcoe_softc
*/
static struct fcoe_softc *fcoe_hostlist_lookup_softc(
const struct net_device *dev)
static struct fcoe_softc *
fcoe_hostlist_lookup_softc(const struct net_device *dev)
{
struct fcoe_softc *fc;
@ -1308,8 +1265,8 @@ static struct fcoe_softc *fcoe_hostlist_lookup_softc(
return NULL;
}
/*
* fcoe_hostlist_lookup - find the corresponding lport by netdev
/**
* fcoe_hostlist_lookup() - Find the corresponding lport by netdev
* @netdev: ptr to net_device
*
* Returns: 0 for success
@ -1324,8 +1281,8 @@ struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev)
}
EXPORT_SYMBOL_GPL(fcoe_hostlist_lookup);
/*
* fcoe_hostlist_add - add a lport to lports list
/**
* fcoe_hostlist_add() - Add a lport to lports list
* @lp: ptr to the fc_lport to badded
*
* Returns: 0 for success
@ -1336,7 +1293,7 @@ int fcoe_hostlist_add(const struct fc_lport *lp)
fc = fcoe_hostlist_lookup_softc(fcoe_netdev(lp));
if (!fc) {
fc = fcoe_softc(lp);
fc = lport_priv(lp);
write_lock_bh(&fcoe_hostlist_lock);
list_add_tail(&fc->list, &fcoe_hostlist);
write_unlock_bh(&fcoe_hostlist_lock);
@ -1345,8 +1302,8 @@ int fcoe_hostlist_add(const struct fc_lport *lp)
}
EXPORT_SYMBOL_GPL(fcoe_hostlist_add);
/*
* fcoe_hostlist_remove - remove a lport from lports list
/**
* fcoe_hostlist_remove() - remove a lport from lports list
* @lp: ptr to the fc_lport to badded
*
* Returns: 0 for success
@ -1366,12 +1323,12 @@ int fcoe_hostlist_remove(const struct fc_lport *lp)
EXPORT_SYMBOL_GPL(fcoe_hostlist_remove);
/**
* fcoe_libfc_config - sets up libfc related properties for lport
* fcoe_libfc_config() - sets up libfc related properties for lport
* @lp: ptr to the fc_lport
* @tt: libfc function template
*
* Returns : 0 for success
**/
*/
int fcoe_libfc_config(struct fc_lport *lp, struct libfc_function_template *tt)
{
/* Set the function pointers set by the LLDD */
@ -1389,14 +1346,14 @@ int fcoe_libfc_config(struct fc_lport *lp, struct libfc_function_template *tt)
EXPORT_SYMBOL_GPL(fcoe_libfc_config);
/**
* fcoe_init - fcoe module loading initialization
* fcoe_init() - fcoe module loading initialization
*
* Initialization routine
* 1. Will create fc transport software structure
* 2. initialize the link list of port information structure
*
* Returns 0 on success, negative on failure
**/
*/
static int __init fcoe_init(void)
{
int cpu;
@ -1433,7 +1390,6 @@ static int __init fcoe_init(void)
} else {
fcoe_percpu[cpu] = NULL;
kfree(p);
}
}
}
@ -1443,11 +1399,9 @@ static int __init fcoe_init(void)
*/
fcoe_dev_setup();
init_timer(&fcoe_timer);
fcoe_timer.data = 0;
fcoe_timer.function = fcoe_watchdog;
fcoe_timer.expires = (jiffies + (10 * HZ));
add_timer(&fcoe_timer);
setup_timer(&fcoe_timer, fcoe_watchdog, 0);
mod_timer(&fcoe_timer, jiffies + (10 * HZ));
/* initiatlize the fcoe transport */
fcoe_transport_init();
@ -1459,10 +1413,10 @@ static int __init fcoe_init(void)
module_init(fcoe_init);
/**
* fcoe_exit - fcoe module unloading cleanup
* fcoe_exit() - fcoe module unloading cleanup
*
* Returns 0 on success, negative on failure
**/
*/
static void __exit fcoe_exit(void)
{
u32 idx;
@ -1483,7 +1437,7 @@ static void __exit fcoe_exit(void)
*/
del_timer_sync(&fcoe_timer);
/* releases the assocaited fcoe transport for each lport */
/* releases the associated fcoe transport for each lport */
list_for_each_entry_safe(fc, tmp, &fcoe_hostlist, list)
fcoe_transport_release(fc->real_dev);

63
drivers/scsi/libfc/fc_disc.c
View File

@ -64,7 +64,7 @@ static void fc_disc_single(struct fc_disc *, struct fc_disc_port *);
static void fc_disc_restart(struct fc_disc *);
/**
* fc_disc_lookup_rport - lookup a remote port by port_id
* fc_disc_lookup_rport() - lookup a remote port by port_id
* @lport: Fibre Channel host port instance
* @port_id: remote port port_id to match
*/
@ -92,7 +92,7 @@ struct fc_rport *fc_disc_lookup_rport(const struct fc_lport *lport,
}
/**
* fc_disc_stop_rports - delete all the remote ports associated with the lport
* fc_disc_stop_rports() - delete all the remote ports associated with the lport
* @disc: The discovery job to stop rports on
*
* Locking Note: This function expects that the lport mutex is locked before
@ -117,7 +117,7 @@ void fc_disc_stop_rports(struct fc_disc *disc)
}
/**
* fc_disc_rport_callback - Event handler for rport events
* fc_disc_rport_callback() - Event handler for rport events
* @lport: The lport which is receiving the event
* @rport: The rport which the event has occured on
* @event: The event that occured
@ -151,7 +151,7 @@ static void fc_disc_rport_callback(struct fc_lport *lport,
}
/**
* fc_disc_recv_rscn_req - Handle Registered State Change Notification (RSCN)
* fc_disc_recv_rscn_req() - Handle Registered State Change Notification (RSCN)
* @sp: Current sequence of the RSCN exchange
* @fp: RSCN Frame
* @lport: Fibre Channel host port instance
@ -246,7 +246,7 @@ static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp,
list_del(&dp->peers);
rport = lport->tt.rport_lookup(lport, dp->ids.port_id);
if (rport) {
rdata = RPORT_TO_PRIV(rport);
rdata = rport->dd_data;
list_del(&rdata->peers);
lport->tt.rport_logoff(rport);
}
@ -265,7 +265,7 @@ reject:
}
/**
* fc_disc_recv_req - Handle incoming requests
* fc_disc_recv_req() - Handle incoming requests
* @sp: Current sequence of the request exchange
* @fp: The frame
* @lport: The FC local port
@ -294,7 +294,7 @@ static void fc_disc_recv_req(struct fc_seq *sp, struct fc_frame *fp,
}
/**
* fc_disc_restart - Restart discovery
* fc_disc_restart() - Restart discovery
* @lport: FC discovery context
*
* Locking Note: This function expects that the disc mutex
@ -322,7 +322,7 @@ static void fc_disc_restart(struct fc_disc *disc)
}
/**
* fc_disc_start - Fibre Channel Target discovery
* fc_disc_start() - Fibre Channel Target discovery
* @lport: FC local port
*
* Returns non-zero if discovery cannot be started.
@ -383,7 +383,7 @@ static struct fc_rport_operations fc_disc_rport_ops = {
};
/**
* fc_disc_new_target - Handle new target found by discovery
* fc_disc_new_target() - Handle new target found by discovery
* @lport: FC local port
* @rport: The previous FC remote port (NULL if new remote port)
* @ids: Identifiers for the new FC remote port
@ -396,7 +396,7 @@ static int fc_disc_new_target(struct fc_disc *disc,
struct fc_rport_identifiers *ids)
{
struct fc_lport *lport = disc->lport;
struct fc_rport_libfc_priv *rp;
struct fc_rport_libfc_priv *rdata;
int error = 0;
if (rport && ids->port_name) {
@ -430,15 +430,15 @@ static int fc_disc_new_target(struct fc_disc *disc,
dp.ids.port_name = ids->port_name;
dp.ids.node_name = ids->node_name;
dp.ids.roles = ids->roles;
rport = fc_rport_rogue_create(&dp);
rport = lport->tt.rport_create(&dp);
}
if (!rport)
error = -ENOMEM;
}
if (rport) {
rp = rport->dd_data;
rp->ops = &fc_disc_rport_ops;
rp->rp_state = RPORT_ST_INIT;
rdata = rport->dd_data;
rdata->ops = &fc_disc_rport_ops;
rdata->rp_state = RPORT_ST_INIT;
lport->tt.rport_login(rport);
}
}
@ -446,20 +446,20 @@ static int fc_disc_new_target(struct fc_disc *disc,
}
/**
* fc_disc_del_target - Delete a target
* fc_disc_del_target() - Delete a target
* @disc: FC discovery context
* @rport: The remote port to be removed
*/
static void fc_disc_del_target(struct fc_disc *disc, struct fc_rport *rport)
{
struct fc_lport *lport = disc->lport;
struct fc_rport_libfc_priv *rdata = RPORT_TO_PRIV(rport);
struct fc_rport_libfc_priv *rdata = rport->dd_data;
list_del(&rdata->peers);
lport->tt.rport_logoff(rport);
}
/**
* fc_disc_done - Discovery has been completed
* fc_disc_done() - Discovery has been completed
* @disc: FC discovery context
*/
static void fc_disc_done(struct fc_disc *disc)
@ -479,7 +479,7 @@ static void fc_disc_done(struct fc_disc *disc)
}
/**
* fc_disc_error - Handle error on dNS request
* fc_disc_error() - Handle error on dNS request
* @disc: FC discovery context
* @fp: The frame pointer
*/
@ -519,7 +519,7 @@ static void fc_disc_error(struct fc_disc *disc, struct fc_frame *fp)
}
/**
* fc_disc_gpn_ft_req - Send Get Port Names by FC-4 type (GPN_FT) request
* fc_disc_gpn_ft_req() - Send Get Port Names by FC-4 type (GPN_FT) request
* @lport: FC discovery context
*
* Locking Note: This function expects that the disc_mutex is locked
@ -553,7 +553,7 @@ err:
}
/**
* fc_disc_gpn_ft_parse - Parse the list of IDs and names resulting from a request
* fc_disc_gpn_ft_parse() - Parse the list of IDs and names resulting from a request
* @lport: Fibre Channel host port instance
* @buf: GPN_FT response buffer
* @len: size of response buffer
@ -617,7 +617,7 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len)
if ((dp.ids.port_id != fc_host_port_id(lport->host)) &&
(dp.ids.port_name != lport->wwpn)) {
rport = fc_rport_rogue_create(&dp);
rport = lport->tt.rport_create(&dp);
if (rport) {
rdata = rport->dd_data;
rdata->ops = &fc_disc_rport_ops;
@ -658,7 +658,10 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len)
return error;
}
/*
/**
* fc_disc_timeout() - Retry handler for the disc component
* @work: Structure holding disc obj that needs retry discovery
*
* Handle retry of memory allocation for remote ports.
*/
static void fc_disc_timeout(struct work_struct *work)
@ -673,7 +676,7 @@ static void fc_disc_timeout(struct work_struct *work)
}
/**
* fc_disc_gpn_ft_resp - Handle a response frame from Get Port Names (GPN_FT)
* fc_disc_gpn_ft_resp() - Handle a response frame from Get Port Names (GPN_FT)
* @sp: Current sequence of GPN_FT exchange
* @fp: response frame
* @lp_arg: Fibre Channel host port instance
@ -712,9 +715,7 @@ static void fc_disc_gpn_ft_resp(struct fc_seq *sp, struct fc_frame *fp,
fr_len(fp));
} else if (ntohs(cp->ct_cmd) == FC_FS_ACC) {
/*
* Accepted. Parse response.
*/
/* Accepted, parse the response. */
buf = cp + 1;
len -= sizeof(*cp);
} else if (ntohs(cp->ct_cmd) == FC_FS_RJT) {
@ -746,7 +747,7 @@ static void fc_disc_gpn_ft_resp(struct fc_seq *sp, struct fc_frame *fp,
}
/**
* fc_disc_single - Discover the directory information for a single target
* fc_disc_single() - Discover the directory information for a single target
* @lport: FC local port
* @dp: The port to rediscover
*
@ -769,7 +770,7 @@ static void fc_disc_single(struct fc_disc *disc, struct fc_disc_port *dp)
if (rport)
fc_disc_del_target(disc, rport);
new_rport = fc_rport_rogue_create(dp);
new_rport = lport->tt.rport_create(dp);
if (new_rport) {
rdata = new_rport->dd_data;
rdata->ops = &fc_disc_rport_ops;
@ -782,7 +783,7 @@ out:
}
/**
* fc_disc_stop - Stop discovery for a given lport
* fc_disc_stop() - Stop discovery for a given lport
* @lport: The lport that discovery should stop for
*/
void fc_disc_stop(struct fc_lport *lport)
@ -796,7 +797,7 @@ void fc_disc_stop(struct fc_lport *lport)
}
/**
* fc_disc_stop_final - Stop discovery for a given lport
* fc_disc_stop_final() - Stop discovery for a given lport
* @lport: The lport that discovery should stop for
*
* This function will block until discovery has been
@ -809,7 +810,7 @@ void fc_disc_stop_final(struct fc_lport *lport)
}
/**
* fc_disc_init - Initialize the discovery block
* fc_disc_init() - Initialize the discovery block
* @lport: FC local port
*/
int fc_disc_init(struct fc_lport *lport)

32
drivers/scsi/libfc/fc_exch.c
View File

@ -32,8 +32,6 @@
#include <scsi/libfc.h>
#include <scsi/fc_encode.h>
#define FC_DEF_R_A_TOV (10 * 1000) /* resource allocation timeout */
/*
* fc_exch_debug can be set in debugger or at compile time to get more logs.
*/
@ -627,7 +625,6 @@ static struct fc_exch *fc_exch_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
{
struct fc_exch *ep;
struct fc_frame_header *fh;
u16 rxid;
ep = mp->lp->tt.exch_get(mp->lp, fp);
if (ep) {
@ -654,18 +651,6 @@ static struct fc_exch *fc_exch_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
if ((ntoh24(fh->fh_f_ctl) & FC_FC_SEQ_INIT) == 0)
ep->esb_stat &= ~ESB_ST_SEQ_INIT;
/*
* Set the responder ID in the frame header.
* The old one should've been 0xffff.
* If it isn't, don't assign one.
* Incoming basic link service frames may specify
* a referenced RX_ID.
*/
if (fh->fh_type != FC_TYPE_BLS) {
rxid = ntohs(fh->fh_rx_id);
WARN_ON(rxid != FC_XID_UNKNOWN);
fh->fh_rx_id = htons(ep->rxid);
}
fc_exch_hold(ep); /* hold for caller */
spin_unlock_bh(&ep->ex_lock); /* lock from exch_get */
}
@ -677,8 +662,8 @@ static struct fc_exch *fc_exch_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
* If fc_pf_rjt_reason is FC_RJT_NONE then this function will have a hold
* on the ep that should be released by the caller.
*/
static enum fc_pf_rjt_reason
fc_seq_lookup_recip(struct fc_exch_mgr *mp, struct fc_frame *fp)
static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_exch_mgr *mp,
struct fc_frame *fp)
{
struct fc_frame_header *fh = fc_frame_header_get(fp);
struct fc_exch *ep = NULL;
@ -996,9 +981,9 @@ static void fc_seq_send_ack(struct fc_seq *sp, const struct fc_frame *rx_fp)
* Send BLS Reject.
* This is for rejecting BA_ABTS only.
*/
static void
fc_exch_send_ba_rjt(struct fc_frame *rx_fp, enum fc_ba_rjt_reason reason,
enum fc_ba_rjt_explan explan)
static void fc_exch_send_ba_rjt(struct fc_frame *rx_fp,
enum fc_ba_rjt_reason reason,
enum fc_ba_rjt_explan explan)
{
struct fc_frame *fp;
struct fc_frame_header *rx_fh;
@ -1096,7 +1081,7 @@ static void fc_exch_recv_abts(struct fc_exch *ep, struct fc_frame *rx_fp)
ap->ba_high_seq_cnt = fh->fh_seq_cnt;
ap->ba_low_seq_cnt = htons(sp->cnt);
}
sp = fc_seq_start_next(sp);
sp = fc_seq_start_next_locked(sp);
spin_unlock_bh(&ep->ex_lock);
fc_seq_send_last(sp, fp, FC_RCTL_BA_ACC, FC_TYPE_BLS);
fc_frame_free(rx_fp);
@ -1480,10 +1465,11 @@ static void fc_exch_reset(struct fc_exch *ep)
* If sid is non-zero, reset only exchanges we source from that FID.
* If did is non-zero, reset only exchanges destined to that FID.
*/
void fc_exch_mgr_reset(struct fc_exch_mgr *mp, u32 sid, u32 did)
void fc_exch_mgr_reset(struct fc_lport *lp, u32 sid, u32 did)
{
struct fc_exch *ep;
struct fc_exch *next;
struct fc_exch_mgr *mp = lp->emp;
spin_lock_bh(&mp->em_lock);
restart:
@ -1607,7 +1593,7 @@ static void fc_exch_rrq_resp(struct fc_seq *sp, struct fc_frame *fp, void *arg)
if (IS_ERR(fp)) {
int err = PTR_ERR(fp);
if (err == -FC_EX_CLOSED)
if (err == -FC_EX_CLOSED || err == -FC_EX_TIMEOUT)
goto cleanup;
FC_DBG("Cannot process RRQ, because of frame error %d\n", err);
return;

56
drivers/scsi/libfc/fc_fcp.c
View File

@ -161,7 +161,7 @@ static struct fc_fcp_pkt *fc_fcp_pkt_alloc(struct fc_lport *lp, gfp_t gfp)
}
/**
* fc_fcp_pkt_release - release hold on scsi_pkt packet
* fc_fcp_pkt_release() - release hold on scsi_pkt packet
* @fsp: fcp packet struct
*
* This is used by upper layer scsi driver.
@ -183,8 +183,7 @@ static void fc_fcp_pkt_hold(struct fc_fcp_pkt *fsp)
}
/**
* fc_fcp_pkt_destory - release hold on scsi_pkt packet
*
* fc_fcp_pkt_destory() - release hold on scsi_pkt packet
* @seq: exchange sequence
* @fsp: fcp packet struct
*
@ -199,7 +198,7 @@ static void fc_fcp_pkt_destroy(struct fc_seq *seq, void *fsp)
}
/**
* fc_fcp_lock_pkt - lock a packet and get a ref to it.
* fc_fcp_lock_pkt() - lock a packet and get a ref to it.
* @fsp: fcp packet
*
* We should only return error if we return a command to scsi-ml before
@ -291,9 +290,7 @@ static void fc_fcp_recv_data(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
buf = fc_frame_payload_get(fp, 0);
if (offset + len > fsp->data_len) {
/*
* this should never happen
*/
/* this should never happen */
if ((fr_flags(fp) & FCPHF_CRC_UNCHECKED) &&
fc_frame_crc_check(fp))
goto crc_err;
@ -387,8 +384,8 @@ crc_err:
fc_fcp_complete_locked(fsp);
}
/*
* fc_fcp_send_data - Send SCSI data to target.
/**
* fc_fcp_send_data() - Send SCSI data to target.
* @fsp: ptr to fc_fcp_pkt
* @sp: ptr to this sequence
* @offset: starting offset for this data request
@ -610,8 +607,8 @@ static void fc_fcp_abts_resp(struct fc_fcp_pkt *fsp, struct fc_frame *fp)
}
}
/*
* fc_fcp_reduce_can_queue - drop can_queue
/**
* fc_fcp_reduce_can_queue() - drop can_queue
* @lp: lport to drop queueing for
*
* If we are getting memory allocation failures, then we may
@ -642,9 +639,11 @@ done:
spin_unlock_irqrestore(lp->host->host_lock, flags);
}
/*
* exch mgr calls this routine to process scsi
* exchanges.
/**
* fc_fcp_recv() - Reveive FCP frames
* @seq: The sequence the frame is on
* @fp: The FC frame
* @arg: The related FCP packet
*
* Return : None
* Context : called from Soft IRQ context
@ -832,7 +831,7 @@ err:
}
/**
* fc_fcp_complete_locked - complete processing of a fcp packet
* fc_fcp_complete_locked() - complete processing of a fcp packet
* @fsp: fcp packet
*
* This function may sleep if a timer is pending. The packet lock must be
@ -900,7 +899,7 @@ static void fc_fcp_cleanup_cmd(struct fc_fcp_pkt *fsp, int error)
}
/**
* fc_fcp_cleanup_each_cmd - run fn on each active command
* fc_fcp_cleanup_each_cmd() - Cleanup active commads
* @lp: logical port
* @id: target id
* @lun: lun
@ -952,7 +951,7 @@ static void fc_fcp_abort_io(struct fc_lport *lp)
}
/**
* fc_fcp_pkt_send - send a fcp packet to the lower level.
* fc_fcp_pkt_send() - send a fcp packet to the lower level.
* @lp: fc lport
* @fsp: fc packet.
*
@ -1621,7 +1620,7 @@ out:
static inline int fc_fcp_lport_queue_ready(struct fc_lport *lp)
{
/* lock ? */
return (lp->state == LPORT_ST_READY) && (lp->link_status & FC_LINK_UP);
return (lp->state == LPORT_ST_READY) && lp->link_up && !lp->qfull;
}
/**
@ -1727,7 +1726,7 @@ out:
EXPORT_SYMBOL(fc_queuecommand);
/**
* fc_io_compl - Handle responses for completed commands
* fc_io_compl() - Handle responses for completed commands
* @fsp: scsi packet
*
* Translates a error to a Linux SCSI error.
@ -1810,12 +1809,12 @@ static void fc_io_compl(struct fc_fcp_pkt *fsp)
sc_cmd->result = DID_ERROR << 16;
break;
case FC_DATA_UNDRUN:
if (fsp->cdb_status == 0) {
if ((fsp->cdb_status == 0) && !(fsp->req_flags & FC_SRB_READ)) {
/*
* scsi status is good but transport level
* underrun. for read it should be an error??
* underrun.
*/
sc_cmd->result = (DID_OK << 16) | fsp->cdb_status;
sc_cmd->result = DID_OK << 16;
} else {
/*
* scsi got underrun, this is an error
@ -1857,7 +1856,7 @@ static void fc_io_compl(struct fc_fcp_pkt *fsp)
}
/**
* fc_fcp_complete - complete processing of a fcp packet
* fc_fcp_complete() - complete processing of a fcp packet
* @fsp: fcp packet
*
* This function may sleep if a fsp timer is pending.
@ -1874,9 +1873,10 @@ void fc_fcp_complete(struct fc_fcp_pkt *fsp)
EXPORT_SYMBOL(fc_fcp_complete);
/**
* fc_eh_abort - Abort a command...from scsi host template
* fc_eh_abort() - Abort a command
* @sc_cmd: scsi command to abort
*
* From scsi host template.
* send ABTS to the target device and wait for the response
* sc_cmd is the pointer to the command to be aborted.
*/
@ -1890,7 +1890,7 @@ int fc_eh_abort(struct scsi_cmnd *sc_cmd)
lp = shost_priv(sc_cmd->device->host);
if (lp->state != LPORT_ST_READY)
return rc;
else if (!(lp->link_status & FC_LINK_UP))
else if (!lp->link_up)
return rc;
spin_lock_irqsave(lp->host->host_lock, flags);
@ -1920,7 +1920,7 @@ release_pkt:
EXPORT_SYMBOL(fc_eh_abort);
/**
* fc_eh_device_reset: Reset a single LUN
* fc_eh_device_reset() Reset a single LUN
* @sc_cmd: scsi command
*
* Set from scsi host template to send tm cmd to the target and wait for the
@ -1973,7 +1973,7 @@ out:
EXPORT_SYMBOL(fc_eh_device_reset);
/**
* fc_eh_host_reset - The reset function will reset the ports on the host.
* fc_eh_host_reset() - The reset function will reset the ports on the host.
* @sc_cmd: scsi command
*/
int fc_eh_host_reset(struct scsi_cmnd *sc_cmd)
@ -1999,7 +1999,7 @@ int fc_eh_host_reset(struct scsi_cmnd *sc_cmd)
EXPORT_SYMBOL(fc_eh_host_reset);
/**
* fc_slave_alloc - configure queue depth
* fc_slave_alloc() - configure queue depth
* @sdev: scsi device
*
* Configures queue depth based on host's cmd_per_len. If not set

173
drivers/scsi/libfc/fc_lport.c
View File

@ -139,7 +139,7 @@ static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp)
}
/**
* fc_lport_rport_callback - Event handler for rport events
* fc_lport_rport_callback() - Event handler for rport events
* @lport: The lport which is receiving the event
* @rport: The rport which the event has occured on
* @event: The event that occured
@ -195,7 +195,7 @@ static void fc_lport_rport_callback(struct fc_lport *lport,
}
/**
* fc_lport_state - Return a string which represents the lport's state
* fc_lport_state() - Return a string which represents the lport's state
* @lport: The lport whose state is to converted to a string
*/
static const char *fc_lport_state(struct fc_lport *lport)
@ -209,7 +209,7 @@ static const char *fc_lport_state(struct fc_lport *lport)
}
/**
* fc_lport_ptp_setup - Create an rport for point-to-point mode
* fc_lport_ptp_setup() - Create an rport for point-to-point mode
* @lport: The lport to attach the ptp rport to
* @fid: The FID of the ptp rport
* @remote_wwpn: The WWPN of the ptp rport
@ -232,7 +232,7 @@ static void fc_lport_ptp_setup(struct fc_lport *lport,
lport->ptp_rp = NULL;
}
lport->ptp_rp = fc_rport_rogue_create(&dp);
lport->ptp_rp = lport->tt.rport_create(&dp);
lport->tt.rport_login(lport->ptp_rp);
@ -250,7 +250,7 @@ void fc_get_host_port_state(struct Scsi_Host *shost)
{
struct fc_lport *lp = shost_priv(shost);
if ((lp->link_status & FC_LINK_UP) == FC_LINK_UP)
if (lp->link_up)
fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
else
fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
@ -351,7 +351,7 @@ static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type)
}
/**
* fc_lport_recv_rlir_req - Handle received Registered Link Incident Report.
* fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report.
* @lport: Fibre Channel local port recieving the RLIR
* @sp: current sequence in the RLIR exchange
* @fp: RLIR request frame
@ -370,7 +370,7 @@ static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp,
}
/**
* fc_lport_recv_echo_req - Handle received ECHO request
* fc_lport_recv_echo_req() - Handle received ECHO request
* @lport: Fibre Channel local port recieving the ECHO
* @sp: current sequence in the ECHO exchange
* @fp: ECHO request frame
@ -412,7 +412,7 @@ static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp,
}
/**
* fc_lport_recv_echo_req - Handle received Request Node ID data request
* fc_lport_recv_echo_req() - Handle received Request Node ID data request
* @lport: Fibre Channel local port recieving the RNID
* @sp: current sequence in the RNID exchange
* @fp: RNID request frame
@ -479,7 +479,7 @@ static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp,
}
/**
* fc_lport_recv_adisc_req - Handle received Address Discovery Request
* fc_lport_recv_adisc_req() - Handle received Address Discovery Request
* @lport: Fibre Channel local port recieving the ADISC
* @sp: current sequence in the ADISC exchange
* @fp: ADISC request frame
@ -529,7 +529,7 @@ static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp,
}
/**
* fc_lport_recv_logo_req - Handle received fabric LOGO request
* fc_lport_recv_logo_req() - Handle received fabric LOGO request
* @lport: Fibre Channel local port recieving the LOGO
* @sp: current sequence in the LOGO exchange
* @fp: LOGO request frame
@ -546,7 +546,7 @@ static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp,
}
/**
* fc_fabric_login - Start the lport state machine
* fc_fabric_login() - Start the lport state machine
* @lport: The lport that should log into the fabric
*
* Locking Note: This function should not be called
@ -568,7 +568,7 @@ int fc_fabric_login(struct fc_lport *lport)
EXPORT_SYMBOL(fc_fabric_login);
/**
* fc_linkup - Handler for transport linkup events
* fc_linkup() - Handler for transport linkup events
* @lport: The lport whose link is up
*/
void fc_linkup(struct fc_lport *lport)
@ -577,8 +577,8 @@ void fc_linkup(struct fc_lport *lport)
fc_host_port_id(lport->host));
mutex_lock(&lport->lp_mutex);
if ((lport->link_status & FC_LINK_UP) != FC_LINK_UP) {
lport->link_status |= FC_LINK_UP;
if (!lport->link_up) {
lport->link_up = 1;
if (lport->state == LPORT_ST_RESET)
fc_lport_enter_flogi(lport);
@ -588,7 +588,7 @@ void fc_linkup(struct fc_lport *lport)
EXPORT_SYMBOL(fc_linkup);
/**
* fc_linkdown - Handler for transport linkdown events
* fc_linkdown() - Handler for transport linkdown events
* @lport: The lport whose link is down
*/
void fc_linkdown(struct fc_lport *lport)
@ -597,8 +597,8 @@ void fc_linkdown(struct fc_lport *lport)
FC_DEBUG_LPORT("Link is down for port (%6x)\n",
fc_host_port_id(lport->host));
if ((lport->link_status & FC_LINK_UP) == FC_LINK_UP) {
lport->link_status &= ~(FC_LINK_UP);
if (lport->link_up) {
lport->link_up = 0;
fc_lport_enter_reset(lport);
lport->tt.fcp_cleanup(lport);
}
@ -607,48 +607,25 @@ void fc_linkdown(struct fc_lport *lport)
EXPORT_SYMBOL(fc_linkdown);
/**
* fc_pause - Pause the flow of frames
* @lport: The lport to be paused
*/
void fc_pause(struct fc_lport *lport)
{
mutex_lock(&lport->lp_mutex);
lport->link_status |= FC_PAUSE;
mutex_unlock(&lport->lp_mutex);
}
EXPORT_SYMBOL(fc_pause);
/**
* fc_unpause - Unpause the flow of frames
* @lport: The lport to be unpaused
*/
void fc_unpause(struct fc_lport *lport)
{
mutex_lock(&lport->lp_mutex);
lport->link_status &= ~(FC_PAUSE);
mutex_unlock(&lport->lp_mutex);
}
EXPORT_SYMBOL(fc_unpause);
/**
* fc_fabric_logoff - Logout of the fabric
* fc_fabric_logoff() - Logout of the fabric
* @lport: fc_lport pointer to logoff the fabric
*
* Return value:
* 0 for success, -1 for failure
**/
*/
int fc_fabric_logoff(struct fc_lport *lport)
{
lport->tt.disc_stop_final(lport);
mutex_lock(&lport->lp_mutex);
fc_lport_enter_logo(lport);
mutex_unlock(&lport->lp_mutex);
cancel_delayed_work_sync(&lport->retry_work);
return 0;
}
EXPORT_SYMBOL(fc_fabric_logoff);
/**
* fc_lport_destroy - unregister a fc_lport
* fc_lport_destroy() - unregister a fc_lport
* @lport: fc_lport pointer to unregister
*
* Return value:
@ -658,26 +635,25 @@ EXPORT_SYMBOL(fc_fabric_logoff);
* clean-up all the allocated memory
* and free up other system resources.
*
**/
*/
int fc_lport_destroy(struct fc_lport *lport)
{
lport->tt.frame_send = fc_frame_drop;
lport->tt.fcp_abort_io(lport);
lport->tt.exch_mgr_reset(lport->emp, 0, 0);
lport->tt.exch_mgr_reset(lport, 0, 0);
return 0;
}
EXPORT_SYMBOL(fc_lport_destroy);
/**
* fc_set_mfs - sets up the mfs for the corresponding fc_lport
* fc_set_mfs() - sets up the mfs for the corresponding fc_lport
* @lport: fc_lport pointer to unregister
* @mfs: the new mfs for fc_lport
*
* Set mfs for the given fc_lport to the new mfs.
*
* Return: 0 for success
*
**/
*/
int fc_set_mfs(struct fc_lport *lport, u32 mfs)
{
unsigned int old_mfs;
@ -706,7 +682,7 @@ int fc_set_mfs(struct fc_lport *lport, u32 mfs)
EXPORT_SYMBOL(fc_set_mfs);
/**
* fc_lport_disc_callback - Callback for discovery events
* fc_lport_disc_callback() - Callback for discovery events
* @lport: FC local port
* @event: The discovery event
*/
@ -731,7 +707,7 @@ void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event)
}
/**
* fc_rport_enter_ready - Enter the ready state and start discovery
* fc_rport_enter_ready() - Enter the ready state and start discovery
* @lport: Fibre Channel local port that is ready
*
* Locking Note: The lport lock is expected to be held before calling
@ -748,7 +724,7 @@ static void fc_lport_enter_ready(struct fc_lport *lport)
}
/**
* fc_lport_recv_flogi_req - Receive a FLOGI request
* fc_lport_recv_flogi_req() - Receive a FLOGI request
* @sp_in: The sequence the FLOGI is on
* @rx_fp: The frame the FLOGI is in
* @lport: The lport that recieved the request
@ -838,7 +814,7 @@ out:
}
/**
* fc_lport_recv_req - The generic lport request handler
* fc_lport_recv_req() - The generic lport request handler
* @lport: The lport that received the request
* @sp: The sequence the request is on
* @fp: The frame the request is in
@ -934,7 +910,7 @@ static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp,
}
/**
* fc_lport_reset - Reset an lport
* fc_lport_reset() - Reset an lport
* @lport: The lport which should be reset
*
* Locking Note: This functions should not be called with the
@ -942,6 +918,7 @@ static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp,
*/
int fc_lport_reset(struct fc_lport *lport)
{
cancel_delayed_work_sync(&lport->retry_work);
mutex_lock(&lport->lp_mutex);
fc_lport_enter_reset(lport);
mutex_unlock(&lport->lp_mutex);
@ -950,7 +927,7 @@ int fc_lport_reset(struct fc_lport *lport)
EXPORT_SYMBOL(fc_lport_reset);
/**
* fc_rport_enter_reset - Reset the local port
* fc_rport_enter_reset() - Reset the local port
* @lport: Fibre Channel local port to be reset
*
* Locking Note: The lport lock is expected to be held before calling
@ -973,16 +950,16 @@ static void fc_lport_enter_reset(struct fc_lport *lport)
lport->tt.disc_stop(lport);
lport->tt.exch_mgr_reset(lport->emp, 0, 0);
lport->tt.exch_mgr_reset(lport, 0, 0);
fc_host_fabric_name(lport->host) = 0;
fc_host_port_id(lport->host) = 0;
if ((lport->link_status & FC_LINK_UP) == FC_LINK_UP)
if (lport->link_up)
fc_lport_enter_flogi(lport);
}
/**
* fc_lport_error - Handler for any errors
* fc_lport_error() - Handler for any errors
* @lport: The fc_lport object
* @fp: The frame pointer
*
@ -1029,8 +1006,8 @@ static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp)
}
/**
* fc_lport_rft_id_resp - Handle response to Register Fibre
* Channel Types by ID (RPN_ID) request
* fc_lport_rft_id_resp() - Handle response to Register Fibre
* Channel Types by ID (RPN_ID) request
* @sp: current sequence in RPN_ID exchange
* @fp: response frame
* @lp_arg: Fibre Channel host port instance
@ -1053,17 +1030,17 @@ static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp,
FC_DEBUG_LPORT("Received a RFT_ID response\n");
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
if (lport->state != LPORT_ST_RFT_ID) {
FC_DBG("Received a RFT_ID response, but in state %s\n",
fc_lport_state(lport));
goto out;
}
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
fh = fc_frame_header_get(fp);
ct = fc_frame_payload_get(fp, sizeof(*ct));
@ -1081,8 +1058,8 @@ err:
}
/**
* fc_lport_rpn_id_resp - Handle response to Register Port
* Name by ID (RPN_ID) request
* fc_lport_rpn_id_resp() - Handle response to Register Port
* Name by ID (RPN_ID) request
* @sp: current sequence in RPN_ID exchange
* @fp: response frame
* @lp_arg: Fibre Channel host port instance
@ -1105,17 +1082,17 @@ static void fc_lport_rpn_id_resp(struct fc_seq *sp, struct fc_frame *fp,
FC_DEBUG_LPORT("Received a RPN_ID response\n");
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
if (lport->state != LPORT_ST_RPN_ID) {
FC_DBG("Received a RPN_ID response, but in state %s\n",
fc_lport_state(lport));
goto out;
}
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
fh = fc_frame_header_get(fp);
ct = fc_frame_payload_get(fp, sizeof(*ct));
if (fh && ct && fh->fh_type == FC_TYPE_CT &&
@ -1133,7 +1110,7 @@ err:
}
/**
* fc_lport_scr_resp - Handle response to State Change Register (SCR) request
* fc_lport_scr_resp() - Handle response to State Change Register (SCR) request
* @sp: current sequence in SCR exchange
* @fp: response frame
* @lp_arg: Fibre Channel lport port instance that sent the registration request
@ -1155,17 +1132,17 @@ static void fc_lport_scr_resp(struct fc_seq *sp, struct fc_frame *fp,
FC_DEBUG_LPORT("Received a SCR response\n");
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
if (lport->state != LPORT_ST_SCR) {
FC_DBG("Received a SCR response, but in state %s\n",
fc_lport_state(lport));
goto out;
}
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
op = fc_frame_payload_op(fp);
if (op == ELS_LS_ACC)
fc_lport_enter_ready(lport);
@ -1179,7 +1156,7 @@ err:
}
/**
* fc_lport_enter_scr - Send a State Change Register (SCR) request
* fc_lport_enter_scr() - Send a State Change Register (SCR) request
* @lport: Fibre Channel local port to register for state changes
*
* Locking Note: The lport lock is expected to be held before calling
@ -1206,7 +1183,7 @@ static void fc_lport_enter_scr(struct fc_lport *lport)
}
/**
* fc_lport_enter_rft_id - Register FC4-types with the name server
* fc_lport_enter_rft_id() - Register FC4-types with the name server
* @lport: Fibre Channel local port to register
*
* Locking Note: The lport lock is expected to be held before calling
@ -1248,7 +1225,7 @@ static void fc_lport_enter_rft_id(struct fc_lport *lport)
}
/**
* fc_rport_enter_rft_id - Register port name with the name server
* fc_rport_enter_rft_id() - Register port name with the name server
* @lport: Fibre Channel local port to register
*
* Locking Note: The lport lock is expected to be held before calling
@ -1281,7 +1258,7 @@ static struct fc_rport_operations fc_lport_rport_ops = {
};
/**
* fc_rport_enter_dns - Create a rport to the name server
* fc_rport_enter_dns() - Create a rport to the name server
* @lport: Fibre Channel local port requesting a rport for the name server
*
* Locking Note: The lport lock is expected to be held before calling
@ -1304,7 +1281,7 @@ static void fc_lport_enter_dns(struct fc_lport *lport)
fc_lport_state_enter(lport, LPORT_ST_DNS);
rport = fc_rport_rogue_create(&dp);
rport = lport->tt.rport_create(&dp);
if (!rport)
goto err;
@ -1318,7 +1295,7 @@ err:
}
/**
* fc_lport_timeout - Handler for the retry_work timer.
* fc_lport_timeout() - Handler for the retry_work timer.
* @work: The work struct of the fc_lport
*/
static void fc_lport_timeout(struct work_struct *work)
@ -1359,7 +1336,7 @@ static void fc_lport_timeout(struct work_struct *work)
}
/**
* fc_lport_logo_resp - Handle response to LOGO request
* fc_lport_logo_resp() - Handle response to LOGO request
* @sp: current sequence in LOGO exchange
* @fp: response frame
* @lp_arg: Fibre Channel lport port instance that sent the LOGO request
@ -1381,17 +1358,17 @@ static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp,
FC_DEBUG_LPORT("Received a LOGO response\n");
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
if (lport->state != LPORT_ST_LOGO) {
FC_DBG("Received a LOGO response, but in state %s\n",
fc_lport_state(lport));
goto out;
}
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
op = fc_frame_payload_op(fp);
if (op == ELS_LS_ACC)
fc_lport_enter_reset(lport);
@ -1405,7 +1382,7 @@ err:
}
/**
* fc_rport_enter_logo - Logout of the fabric
* fc_rport_enter_logo() - Logout of the fabric
* @lport: Fibre Channel local port to be logged out
*
* Locking Note: The lport lock is expected to be held before calling
@ -1437,7 +1414,7 @@ static void fc_lport_enter_logo(struct fc_lport *lport)
}
/**
* fc_lport_flogi_resp - Handle response to FLOGI request
* fc_lport_flogi_resp() - Handle response to FLOGI request
* @sp: current sequence in FLOGI exchange
* @fp: response frame
* @lp_arg: Fibre Channel lport port instance that sent the FLOGI request
@ -1465,17 +1442,17 @@ static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
FC_DEBUG_LPORT("Received a FLOGI response\n");
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
if (lport->state != LPORT_ST_FLOGI) {
FC_DBG("Received a FLOGI response, but in state %s\n",
fc_lport_state(lport));
goto out;
}
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
fh = fc_frame_header_get(fp);
did = ntoh24(fh->fh_d_id);
if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) {
@ -1532,7 +1509,7 @@ err:
}
/**
* fc_rport_enter_flogi - Send a FLOGI request to the fabric manager
* fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager
* @lport: Fibre Channel local port to be logged in to the fabric
*
* Locking Note: The lport lock is expected to be held before calling

197
drivers/scsi/libfc/fc_rport.c
View File

@ -81,6 +81,7 @@ static void fc_rport_recv_logo_req(struct fc_rport *,
struct fc_seq *, struct fc_frame *);
static void fc_rport_timeout(struct work_struct *);
static void fc_rport_error(struct fc_rport *, struct fc_frame *);
static void fc_rport_error_retry(struct fc_rport *, struct fc_frame *);
static void fc_rport_work(struct work_struct *);
static const char *fc_rport_state_names[] = {
@ -145,7 +146,7 @@ struct fc_rport *fc_rport_rogue_create(struct fc_disc_port *dp)
}
/**
* fc_rport_state - return a string for the state the rport is in
* fc_rport_state() - return a string for the state the rport is in
* @rport: The rport whose state we want to get a string for
*/
static const char *fc_rport_state(struct fc_rport *rport)
@ -160,7 +161,7 @@ static const char *fc_rport_state(struct fc_rport *rport)
}
/**
* fc_set_rport_loss_tmo - Set the remote port loss timeout in seconds.
* fc_set_rport_loss_tmo() - Set the remote port loss timeout in seconds.
* @rport: Pointer to Fibre Channel remote port structure
* @timeout: timeout in seconds
*/
@ -174,12 +175,12 @@ void fc_set_rport_loss_tmo(struct fc_rport *rport, u32 timeout)
EXPORT_SYMBOL(fc_set_rport_loss_tmo);
/**
* fc_plogi_get_maxframe - Get max payload from the common service parameters
* fc_plogi_get_maxframe() - Get max payload from the common service parameters
* @flp: FLOGI payload structure
* @maxval: upper limit, may be less than what is in the service parameters
*/
static unsigned int
fc_plogi_get_maxframe(struct fc_els_flogi *flp, unsigned int maxval)
static unsigned int fc_plogi_get_maxframe(struct fc_els_flogi *flp,
unsigned int maxval)
{
unsigned int mfs;
@ -197,7 +198,7 @@ fc_plogi_get_maxframe(struct fc_els_flogi *flp, unsigned int maxval)
}
/**
* fc_rport_state_enter - Change the rport's state
* fc_rport_state_enter() - Change the rport's state
* @rport: The rport whose state should change
* @new: The new state of the rport
*
@ -214,6 +215,7 @@ static void fc_rport_state_enter(struct fc_rport *rport,
static void fc_rport_work(struct work_struct *work)
{
u32 port_id;
struct fc_rport_libfc_priv *rdata =
container_of(work, struct fc_rport_libfc_priv, event_work);
enum fc_rport_event event;
@ -279,14 +281,18 @@ static void fc_rport_work(struct work_struct *work)
rport_ops->event_callback(lport, rport, event);
if (trans_state == FC_PORTSTATE_ROGUE)
put_device(&rport->dev);
else
else {
port_id = rport->port_id;
fc_remote_port_delete(rport);
lport->tt.exch_mgr_reset(lport, 0, port_id);
lport->tt.exch_mgr_reset(lport, port_id, 0);
}
} else
mutex_unlock(&rdata->rp_mutex);
}
/**
* fc_rport_login - Start the remote port login state machine
* fc_rport_login() - Start the remote port login state machine
* @rport: Fibre Channel remote port
*
* Locking Note: Called without the rport lock held. This
@ -309,7 +315,7 @@ int fc_rport_login(struct fc_rport *rport)
}
/**
* fc_rport_logoff - Logoff and remove an rport
* fc_rport_logoff() - Logoff and remove an rport
* @rport: Fibre Channel remote port to be removed
*
* Locking Note: Called without the rport lock held. This
@ -347,7 +353,7 @@ int fc_rport_logoff(struct fc_rport *rport)
}
/**
* fc_rport_enter_ready - The rport is ready
* fc_rport_enter_ready() - The rport is ready
* @rport: Fibre Channel remote port that is ready
*
* Locking Note: The rport lock is expected to be held before calling
@ -366,7 +372,7 @@ static void fc_rport_enter_ready(struct fc_rport *rport)
}
/**
* fc_rport_timeout - Handler for the retry_work timer.
* fc_rport_timeout() - Handler for the retry_work timer.
* @work: The work struct of the fc_rport_libfc_priv
*
* Locking Note: Called without the rport lock held. This
@ -405,59 +411,75 @@ static void fc_rport_timeout(struct work_struct *work)
}
/**
* fc_rport_error - Handler for any errors
* fc_rport_error() - Error handler, called once retries have been exhausted
* @rport: The fc_rport object
* @fp: The frame pointer
*
* If the error was caused by a resource allocation failure
* then wait for half a second and retry, otherwise retry
* immediately.
*
* Locking Note: The rport lock is expected to be held before
* calling this routine
*/
static void fc_rport_error(struct fc_rport *rport, struct fc_frame *fp)
{
struct fc_rport_libfc_priv *rdata = rport->dd_data;
unsigned long delay = 0;
FC_DEBUG_RPORT("Error %ld in state %s, retries %d\n",
PTR_ERR(fp), fc_rport_state(rport), rdata->retries);
if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) {
/*
* Memory allocation failure, or the exchange timed out.
* Retry after delay
*/
if (rdata->retries < rdata->local_port->max_retry_count) {
rdata->retries++;
if (!fp)
delay = msecs_to_jiffies(500);
get_device(&rport->dev);
schedule_delayed_work(&rdata->retry_work, delay);
} else {
switch (rdata->rp_state) {
case RPORT_ST_PLOGI:
case RPORT_ST_PRLI:
case RPORT_ST_LOGO:
rdata->event = RPORT_EV_FAILED;
queue_work(rport_event_queue,
&rdata->event_work);
break;
case RPORT_ST_RTV:
fc_rport_enter_ready(rport);
break;
case RPORT_ST_NONE:
case RPORT_ST_READY:
case RPORT_ST_INIT:
break;
}
}
switch (rdata->rp_state) {
case RPORT_ST_PLOGI:
case RPORT_ST_PRLI:
case RPORT_ST_LOGO:
rdata->event = RPORT_EV_FAILED;
queue_work(rport_event_queue,
&rdata->event_work);
break;
case RPORT_ST_RTV:
fc_rport_enter_ready(rport);
break;
case RPORT_ST_NONE:
case RPORT_ST_READY:
case RPORT_ST_INIT:
break;
}
}
/**
* fc_rport_plogi_recv_resp - Handle incoming ELS PLOGI response
* fc_rport_error_retry() - Error handler when retries are desired
* @rport: The fc_rport object
* @fp: The frame pointer
*
* If the error was an exchange timeout retry immediately,
* otherwise wait for E_D_TOV.
*
* Locking Note: The rport lock is expected to be held before
* calling this routine
*/
static void fc_rport_error_retry(struct fc_rport *rport, struct fc_frame *fp)
{
struct fc_rport_libfc_priv *rdata = rport->dd_data;
unsigned long delay = FC_DEF_E_D_TOV;
/* make sure this isn't an FC_EX_CLOSED error, never retry those */
if (PTR_ERR(fp) == -FC_EX_CLOSED)
return fc_rport_error(rport, fp);
if (rdata->retries < rdata->local_port->max_retry_count) {
FC_DEBUG_RPORT("Error %ld in state %s, retrying\n",
PTR_ERR(fp), fc_rport_state(rport));
rdata->retries++;
/* no additional delay on exchange timeouts */
if (PTR_ERR(fp) == -FC_EX_TIMEOUT)
delay = 0;
get_device(&rport->dev);
schedule_delayed_work(&rdata->retry_work, delay);
return;
}
return fc_rport_error(rport, fp);
}
/**
* fc_rport_plogi_recv_resp() - Handle incoming ELS PLOGI response
* @sp: current sequence in the PLOGI exchange
* @fp: response frame
* @rp_arg: Fibre Channel remote port
@ -483,17 +505,17 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp,
FC_DEBUG_RPORT("Received a PLOGI response from port (%6x)\n",
rport->port_id);
if (IS_ERR(fp)) {
fc_rport_error_retry(rport, fp);
goto err;
}
if (rdata->rp_state != RPORT_ST_PLOGI) {
FC_DBG("Received a PLOGI response, but in state %s\n",
fc_rport_state(rport));
goto out;
}
if (IS_ERR(fp)) {
fc_rport_error(rport, fp);
goto err;
}
op = fc_frame_payload_op(fp);
if (op == ELS_LS_ACC &&
(plp = fc_frame_payload_get(fp, sizeof(*plp))) != NULL) {
@ -522,7 +544,7 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp,
else
fc_rport_enter_prli(rport);
} else
fc_rport_error(rport, fp);
fc_rport_error_retry(rport, fp);
out:
fc_frame_free(fp);
@ -532,7 +554,7 @@ err:
}
/**
* fc_rport_enter_plogi - Send Port Login (PLOGI) request to peer
* fc_rport_enter_plogi() - Send Port Login (PLOGI) request to peer
* @rport: Fibre Channel remote port to send PLOGI to
*
* Locking Note: The rport lock is expected to be held before calling
@ -552,20 +574,20 @@ static void fc_rport_enter_plogi(struct fc_rport *rport)
rport->maxframe_size = FC_MIN_MAX_PAYLOAD;
fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
if (!fp) {
fc_rport_error(rport, fp);
fc_rport_error_retry(rport, fp);
return;
}
rdata->e_d_tov = lport->e_d_tov;
if (!lport->tt.elsct_send(lport, rport, fp, ELS_PLOGI,
fc_rport_plogi_resp, rport, lport->e_d_tov))
fc_rport_error(rport, fp);
fc_rport_error_retry(rport, fp);
else
get_device(&rport->dev);
}
/**
* fc_rport_prli_resp - Process Login (PRLI) response handler
* fc_rport_prli_resp() - Process Login (PRLI) response handler
* @sp: current sequence in the PRLI exchange
* @fp: response frame
* @rp_arg: Fibre Channel remote port
@ -592,17 +614,17 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
FC_DEBUG_RPORT("Received a PRLI response from port (%6x)\n",
rport->port_id);
if (IS_ERR(fp)) {
fc_rport_error_retry(rport, fp);
goto err;
}
if (rdata->rp_state != RPORT_ST_PRLI) {
FC_DBG("Received a PRLI response, but in state %s\n",
fc_rport_state(rport));
goto out;
}
if (IS_ERR(fp)) {
fc_rport_error(rport, fp);
goto err;
}
op = fc_frame_payload_op(fp);
if (op == ELS_LS_ACC) {
pp = fc_frame_payload_get(fp, sizeof(*pp));
@ -635,7 +657,7 @@ err:
}
/**
* fc_rport_logo_resp - Logout (LOGO) response handler
* fc_rport_logo_resp() - Logout (LOGO) response handler
* @sp: current sequence in the LOGO exchange
* @fp: response frame
* @rp_arg: Fibre Channel remote port
@ -657,7 +679,7 @@ static void fc_rport_logo_resp(struct fc_seq *sp, struct fc_frame *fp,
rport->port_id);
if (IS_ERR(fp)) {
fc_rport_error(rport, fp);
fc_rport_error_retry(rport, fp);
goto err;
}
@ -684,7 +706,7 @@ err:
}
/**
* fc_rport_enter_prli - Send Process Login (PRLI) request to peer
* fc_rport_enter_prli() - Send Process Login (PRLI) request to peer
* @rport: Fibre Channel remote port to send PRLI to
*
* Locking Note: The rport lock is expected to be held before calling
@ -707,19 +729,19 @@ static void fc_rport_enter_prli(struct fc_rport *rport)
fp = fc_frame_alloc(lport, sizeof(*pp));
if (!fp) {
fc_rport_error(rport, fp);
fc_rport_error_retry(rport, fp);
return;
}
if (!lport->tt.elsct_send(lport, rport, fp, ELS_PRLI,
fc_rport_prli_resp, rport, lport->e_d_tov))
fc_rport_error(rport, fp);
fc_rport_error_retry(rport, fp);
else
get_device(&rport->dev);
}
/**
* fc_rport_els_rtv_resp - Request Timeout Value response handler
* fc_rport_els_rtv_resp() - Request Timeout Value response handler
* @sp: current sequence in the RTV exchange
* @fp: response frame
* @rp_arg: Fibre Channel remote port
@ -742,17 +764,17 @@ static void fc_rport_rtv_resp(struct fc_seq *sp, struct fc_frame *fp,
FC_DEBUG_RPORT("Received a RTV response from port (%6x)\n",
rport->port_id);
if (IS_ERR(fp)) {
fc_rport_error(rport, fp);
goto err;
}
if (rdata->rp_state != RPORT_ST_RTV) {
FC_DBG("Received a RTV response, but in state %s\n",
fc_rport_state(rport));
goto out;
}
if (IS_ERR(fp)) {
fc_rport_error(rport, fp);
goto err;
}
op = fc_frame_payload_op(fp);
if (op == ELS_LS_ACC) {
struct fc_els_rtv_acc *rtv;
@ -785,7 +807,7 @@ err:
}
/**
* fc_rport_enter_rtv - Send Request Timeout Value (RTV) request to peer
* fc_rport_enter_rtv() - Send Request Timeout Value (RTV) request to peer
* @rport: Fibre Channel remote port to send RTV to
*
* Locking Note: The rport lock is expected to be held before calling
@ -804,19 +826,19 @@ static void fc_rport_enter_rtv(struct fc_rport *rport)
fp = fc_frame_alloc(lport, sizeof(struct fc_els_rtv));
if (!fp) {
fc_rport_error(rport, fp);
fc_rport_error_retry(rport, fp);
return;
}
if (!lport->tt.elsct_send(lport, rport, fp, ELS_RTV,
fc_rport_rtv_resp, rport, lport->e_d_tov))
fc_rport_error(rport, fp);
fc_rport_error_retry(rport, fp);
else
get_device(&rport->dev);
}
/**
* fc_rport_enter_logo - Send Logout (LOGO) request to peer
* fc_rport_enter_logo() - Send Logout (LOGO) request to peer
* @rport: Fibre Channel remote port to send LOGO to
*
* Locking Note: The rport lock is expected to be held before calling
@ -835,20 +857,20 @@ static void fc_rport_enter_logo(struct fc_rport *rport)
fp = fc_frame_alloc(lport, sizeof(struct fc_els_logo));
if (!fp) {
fc_rport_error(rport, fp);
fc_rport_error_retry(rport, fp);
return;
}
if (!lport->tt.elsct_send(lport, rport, fp, ELS_LOGO,
fc_rport_logo_resp, rport, lport->e_d_tov))
fc_rport_error(rport, fp);
fc_rport_error_retry(rport, fp);
else
get_device(&rport->dev);
}
/**
* fc_rport_recv_req - Receive a request from a rport
* fc_rport_recv_req() - Receive a request from a rport
* @sp: current sequence in the PLOGI exchange
* @fp: response frame
* @rp_arg: Fibre Channel remote port
@ -909,7 +931,7 @@ void fc_rport_recv_req(struct fc_seq *sp, struct fc_frame *fp,
}
/**
* fc_rport_recv_plogi_req - Handle incoming Port Login (PLOGI) request
* fc_rport_recv_plogi_req() - Handle incoming Port Login (PLOGI) request
* @rport: Fibre Channel remote port that initiated PLOGI
* @sp: current sequence in the PLOGI exchange
* @fp: PLOGI request frame
@ -1031,7 +1053,7 @@ static void fc_rport_recv_plogi_req(struct fc_rport *rport,
}
/**
* fc_rport_recv_prli_req - Handle incoming Process Login (PRLI) request
* fc_rport_recv_prli_req() - Handle incoming Process Login (PRLI) request
* @rport: Fibre Channel remote port that initiated PRLI
* @sp: current sequence in the PRLI exchange
* @fp: PRLI request frame
@ -1182,7 +1204,7 @@ static void fc_rport_recv_prli_req(struct fc_rport *rport,
}
/**
* fc_rport_recv_prlo_req - Handle incoming Process Logout (PRLO) request
* fc_rport_recv_prlo_req() - Handle incoming Process Logout (PRLO) request
* @rport: Fibre Channel remote port that initiated PRLO
* @sp: current sequence in the PRLO exchange
* @fp: PRLO request frame
@ -1213,7 +1235,7 @@ static void fc_rport_recv_prlo_req(struct fc_rport *rport, struct fc_seq *sp,
}
/**
* fc_rport_recv_logo_req - Handle incoming Logout (LOGO) request
* fc_rport_recv_logo_req() - Handle incoming Logout (LOGO) request
* @rport: Fibre Channel remote port that initiated LOGO
* @sp: current sequence in the LOGO exchange
* @fp: LOGO request frame
@ -1249,6 +1271,9 @@ static void fc_rport_flush_queue(void)
int fc_rport_init(struct fc_lport *lport)
{
if (!lport->tt.rport_create)
lport->tt.rport_create = fc_rport_rogue_create;
if (!lport->tt.rport_login)
lport->tt.rport_login = fc_rport_login;
@ -1285,7 +1310,7 @@ void fc_rport_terminate_io(struct fc_rport *rport)
struct fc_rport_libfc_priv *rdata = rport->dd_data;
struct fc_lport *lport = rdata->local_port;
lport->tt.exch_mgr_reset(lport->emp, 0, rport->port_id);
lport->tt.exch_mgr_reset(lport->emp, rport->port_id, 0);
lport->tt.exch_mgr_reset(lport, 0, rport->port_id);
lport->tt.exch_mgr_reset(lport, rport->port_id, 0);
}
EXPORT_SYMBOL(fc_rport_terminate_io);

9
drivers/scsi/qla2xxx/qla_attr.c
View File

@ -244,12 +244,6 @@ qla2x00_sysfs_write_optrom_ctl(struct kobject *kobj,
if (ha->optrom_state != QLA_SWAITING)
break;
if (start & 0xfff) {
qla_printk(KERN_WARNING, ha,
"Invalid start region 0x%x/0x%x.\n", start, size);
return -EINVAL;
}
ha->optrom_region_start = start;
ha->optrom_region_size = start + size > ha->optrom_size ?
ha->optrom_size - start : size;
@ -303,8 +297,7 @@ qla2x00_sysfs_write_optrom_ctl(struct kobject *kobj,
else if (start == (ha->flt_region_boot * 4) ||
start == (ha->flt_region_fw * 4))
valid = 1;
else if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) &&
start == (ha->flt_region_vpd_nvram * 4))
else if (IS_QLA25XX(ha) || IS_QLA81XX(ha))
valid = 1;
if (!valid) {
qla_printk(KERN_WARNING, ha,

19
drivers/scsi/qla2xxx/qla_init.c
View File

@ -1308,8 +1308,12 @@ qla2x00_init_rings(scsi_qla_host_t *vha)
DEBUG(printk("scsi(%ld): Issue init firmware.\n", vha->host_no));
if (ha->flags.npiv_supported)
if (ha->flags.npiv_supported) {
if (ha->operating_mode == LOOP)
ha->max_npiv_vports = MIN_MULTI_ID_FABRIC - 1;
mid_init_cb->count = cpu_to_le16(ha->max_npiv_vports);
}
mid_init_cb->options = __constant_cpu_to_le16(BIT_1);
@ -2610,6 +2614,7 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *vha,
port_id_t wrap, nxt_d_id;
struct qla_hw_data *ha = vha->hw;
struct scsi_qla_host *vp, *base_vha = pci_get_drvdata(ha->pdev);
struct scsi_qla_host *tvp;
rval = QLA_SUCCESS;
@ -2709,7 +2714,7 @@ qla2x00_find_all_fabric_devs(scsi_qla_host_t *vha,
/* Bypass virtual ports of the same host. */
found = 0;
if (ha->num_vhosts) {
list_for_each_entry(vp, &ha->vp_list, list) {
list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
if (new_fcport->d_id.b24 == vp->d_id.b24) {
found = 1;
break;
@ -2832,6 +2837,7 @@ qla2x00_find_new_loop_id(scsi_qla_host_t *vha, fc_port_t *dev)
uint16_t first_loop_id;
struct qla_hw_data *ha = vha->hw;
struct scsi_qla_host *vp;
struct scsi_qla_host *tvp;
rval = QLA_SUCCESS;
@ -2856,7 +2862,7 @@ qla2x00_find_new_loop_id(scsi_qla_host_t *vha, fc_port_t *dev)
/* Check for loop ID being already in use. */
found = 0;
fcport = NULL;
list_for_each_entry(vp, &ha->vp_list, list) {
list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
list_for_each_entry(fcport, &vp->vp_fcports, list) {
if (fcport->loop_id == dev->loop_id &&
fcport != dev) {
@ -3291,6 +3297,7 @@ qla2x00_abort_isp(scsi_qla_host_t *vha)
uint8_t status = 0;
struct qla_hw_data *ha = vha->hw;
struct scsi_qla_host *vp;
struct scsi_qla_host *tvp;
struct req_que *req = ha->req_q_map[0];
if (vha->flags.online) {
@ -3306,7 +3313,7 @@ qla2x00_abort_isp(scsi_qla_host_t *vha)
if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
atomic_set(&vha->loop_state, LOOP_DOWN);
qla2x00_mark_all_devices_lost(vha, 0);
list_for_each_entry(vp, &ha->vp_list, list)
list_for_each_entry_safe(vp, tvp, &ha->vp_list, list)
qla2x00_mark_all_devices_lost(vp, 0);
} else {
if (!atomic_read(&vha->loop_down_timer))
@ -3403,7 +3410,7 @@ qla2x00_abort_isp(scsi_qla_host_t *vha)
DEBUG(printk(KERN_INFO
"qla2x00_abort_isp(%ld): succeeded.\n",
vha->host_no));
list_for_each_entry(vp, &ha->vp_list, list) {
list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
if (vp->vp_idx)
qla2x00_vp_abort_isp(vp);
}
@ -3428,7 +3435,7 @@ qla2x00_abort_isp(scsi_qla_host_t *vha)
static int
qla2x00_restart_isp(scsi_qla_host_t *vha)
{
uint8_t status = 0;
int status = 0;
uint32_t wait_time;
struct qla_hw_data *ha = vha->hw;
struct req_que *req = ha->req_q_map[0];

3
drivers/scsi/qla2xxx/qla_mbx.c
View File

@ -2685,6 +2685,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
uint16_t stat = le16_to_cpu(rptid_entry->vp_idx);
struct qla_hw_data *ha = vha->hw;
scsi_qla_host_t *vp;
scsi_qla_host_t *tvp;
if (rptid_entry->entry_status != 0)
return;
@ -2710,7 +2711,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
if (MSB(stat) == 1)
return;
list_for_each_entry(vp, &ha->vp_list, list)
list_for_each_entry_safe(vp, tvp, &ha->vp_list, list)
if (vp_idx == vp->vp_idx)
break;
if (!vp)

10
drivers/scsi/qla2xxx/qla_mid.c
View File

@ -69,9 +69,10 @@ static scsi_qla_host_t *
qla24xx_find_vhost_by_name(struct qla_hw_data *ha, uint8_t *port_name)
{
scsi_qla_host_t *vha;
struct scsi_qla_host *tvha;
/* Locate matching device in database. */
list_for_each_entry(vha, &ha->vp_list, list) {
list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
if (!memcmp(port_name, vha->port_name, WWN_SIZE))
return vha;
}
@ -194,11 +195,11 @@ qla24xx_configure_vp(scsi_qla_host_t *vha)
void
qla2x00_alert_all_vps(struct rsp_que *rsp, uint16_t *mb)
{
scsi_qla_host_t *vha;
scsi_qla_host_t *vha, *tvha;
struct qla_hw_data *ha = rsp->hw;
int i = 0;
list_for_each_entry(vha, &ha->vp_list, list) {
list_for_each_entry_safe(vha, tvha, &ha->vp_list, list) {
if (vha->vp_idx) {
switch (mb[0]) {
case MBA_LIP_OCCURRED:
@ -300,6 +301,7 @@ qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
int ret;
struct qla_hw_data *ha = vha->hw;
scsi_qla_host_t *vp;
struct scsi_qla_host *tvp;
if (vha->vp_idx)
return;
@ -308,7 +310,7 @@ qla2x00_do_dpc_all_vps(scsi_qla_host_t *vha)
clear_bit(VP_DPC_NEEDED, &vha->dpc_flags);
list_for_each_entry(vp, &ha->vp_list, list) {
list_for_each_entry_safe(vp, tvp, &ha->vp_list, list) {
if (vp->vp_idx)
ret = qla2x00_do_dpc_vp(vp);
}

6
drivers/scsi/qla2xxx/qla_os.c
View File

@ -2222,10 +2222,6 @@ qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len,
{
char name[16];
ha->init_cb_size = sizeof(init_cb_t);
if (IS_QLA2XXX_MIDTYPE(ha))
ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
ha->init_cb = dma_alloc_coherent(&ha->pdev->dev, ha->init_cb_size,
&ha->init_cb_dma, GFP_KERNEL);
if (!ha->init_cb)
@ -2568,7 +2564,7 @@ qla2x00_do_work(struct scsi_qla_host *vha)
void qla2x00_relogin(struct scsi_qla_host *vha)
{
fc_port_t *fcport;
uint8_t status;
int status;
uint16_t next_loopid = 0;
struct qla_hw_data *ha = vha->hw;

2
drivers/scsi/qla2xxx/qla_version.h
View File

@ -7,7 +7,7 @@
/*
* Driver version
*/
#define QLA2XXX_VERSION "8.03.00-k3"
#define QLA2XXX_VERSION "8.03.00-k4"
#define QLA_DRIVER_MAJOR_VER 8
#define QLA_DRIVER_MINOR_VER 3

26
drivers/scsi/sd.c
View File

@ -1167,23 +1167,19 @@ sd_spinup_disk(struct scsi_disk *sdkp)
/*
* The device does not want the automatic start to be issued.
*/
if (sdkp->device->no_start_on_add) {
if (sdkp->device->no_start_on_add)
break;
}
/*
* If manual intervention is required, or this is an
* absent USB storage device, a spinup is meaningless.
*/
if (sense_valid &&
sshdr.sense_key == NOT_READY &&
sshdr.asc == 4 && sshdr.ascq == 3) {
break; /* manual intervention required */
/*
* Issue command to spin up drive when not ready
*/
} else if (sense_valid && sshdr.sense_key == NOT_READY) {
if (sense_valid && sshdr.sense_key == NOT_READY) {
if (sshdr.asc == 4 && sshdr.ascq == 3)
break; /* manual intervention required */
if (sshdr.asc == 4 && sshdr.ascq == 0xb)
break; /* standby */
if (sshdr.asc == 4 && sshdr.ascq == 0xc)
break; /* unavailable */
/*
* Issue command to spin up drive when not ready
*/
if (!spintime) {
sd_printk(KERN_NOTICE, sdkp, "Spinning up disk...");
cmd[0] = START_STOP;

4
include/scsi/fc/fc_fcoe.h
View File

@ -31,10 +31,6 @@
#define ETH_P_FCOE 0x8906 /* FCOE ether type */
#endif
#ifndef ETH_P_8021Q
#define ETH_P_8021Q 0x8100
#endif
/*
* FC_FCOE_OUI hasn't been standardized yet. XXX TBD.
*/

5
include/scsi/fc/fc_fs.h
View File

@ -337,4 +337,9 @@ enum fc_pf_rjt_reason {
FC_RJT_VENDOR = 0xff, /* vendor specific reject */
};
/* default timeout values */
#define FC_DEF_E_D_TOV 2000UL
#define FC_DEF_R_A_TOV 10000UL
#endif /* _FC_FS_H_ */

138
include/scsi/libfc.h
View File

@ -68,9 +68,6 @@
/*
* FC HBA status
*/
#define FC_PAUSE (1 << 1)
#define FC_LINK_UP (1 << 0)
enum fc_lport_state {
LPORT_ST_NONE = 0,
LPORT_ST_FLOGI,
@ -339,31 +336,17 @@ struct fc_exch {
struct libfc_function_template {
/**
* Mandatory Fields
*
* These handlers must be implemented by the LLD.
*/
/*
* Interface to send a FC frame
*
* STATUS: REQUIRED
*/
int (*frame_send)(struct fc_lport *lp, struct fc_frame *fp);
/**
* Optional Fields
*
* The LLD may choose to implement any of the following handlers.
* If LLD doesn't specify hander and leaves its pointer NULL then
* the default libfc function will be used for that handler.
*/
/**
* ELS/CT interfaces
*/
/*
* elsct_send - sends ELS/CT frame
* Interface to send ELS/CT frames
*
* STATUS: OPTIONAL
*/
struct fc_seq *(*elsct_send)(struct fc_lport *lport,
struct fc_rport *rport,
@ -373,9 +356,6 @@ struct libfc_function_template {
struct fc_frame *fp,
void *arg),
void *arg, u32 timer_msec);
/**
* Exhance Manager interfaces
*/
/*
* Send the FC frame payload using a new exchange and sequence.
@ -407,6 +387,8 @@ struct libfc_function_template {
* timer_msec argument is specified. The timer is canceled when
* it fires or when the exchange is done. The exchange timeout handler
* is registered by EM layer.
*
* STATUS: OPTIONAL
*/
struct fc_seq *(*exch_seq_send)(struct fc_lport *lp,
struct fc_frame *fp,
@ -418,14 +400,18 @@ struct libfc_function_template {
void *arg, unsigned int timer_msec);
/*
* send a frame using existing sequence and exchange.
* Send a frame using an existing sequence and exchange.
*
* STATUS: OPTIONAL
*/
int (*seq_send)(struct fc_lport *lp, struct fc_seq *sp,
struct fc_frame *fp);
/*
* Send ELS response using mainly infomation
* in exchange and sequence in EM layer.
* Send an ELS response using infomation from a previous
* exchange and sequence.
*
* STATUS: OPTIONAL
*/
void (*seq_els_rsp_send)(struct fc_seq *sp, enum fc_els_cmd els_cmd,
struct fc_seq_els_data *els_data);
@ -437,6 +423,8 @@ struct libfc_function_template {
* A timer_msec can be specified for abort timeout, if non-zero
* timer_msec value is specified then exchange resp handler
* will be called with timeout error if no response to abort.
*
* STATUS: OPTIONAL
*/
int (*seq_exch_abort)(const struct fc_seq *req_sp,
unsigned int timer_msec);
@ -444,6 +432,8 @@ struct libfc_function_template {
/*
* Indicate that an exchange/sequence tuple is complete and the memory
* allocated for the related objects may be freed.
*
* STATUS: OPTIONAL
*/
void (*exch_done)(struct fc_seq *sp);
@ -451,6 +441,8 @@ struct libfc_function_template {
* Assigns a EM and a free XID for an new exchange and then
* allocates a new exchange and sequence pair.
* The fp can be used to determine free XID.
*
* STATUS: OPTIONAL
*/
struct fc_exch *(*exch_get)(struct fc_lport *lp, struct fc_frame *fp);
@ -458,12 +450,16 @@ struct libfc_function_template {
* Release previously assigned XID by exch_get API.
* The LLD may implement this if XID is assigned by LLD
* in exch_get().
*
* STATUS: OPTIONAL
*/
void (*exch_put)(struct fc_lport *lp, struct fc_exch_mgr *mp,
u16 ex_id);
/*
* Start a new sequence on the same exchange/sequence tuple.
*
* STATUS: OPTIONAL
*/
struct fc_seq *(*seq_start_next)(struct fc_seq *sp);
@ -471,26 +467,38 @@ struct libfc_function_template {
* Reset an exchange manager, completing all sequences and exchanges.
* If s_id is non-zero, reset only exchanges originating from that FID.
* If d_id is non-zero, reset only exchanges sending to that FID.
*
* STATUS: OPTIONAL
*/
void (*exch_mgr_reset)(struct fc_exch_mgr *,
void (*exch_mgr_reset)(struct fc_lport *,
u32 s_id, u32 d_id);
void (*rport_flush_queue)(void);
/**
* Local Port interfaces
/*
* Flush the rport work queue. Generally used before shutdown.
*
* STATUS: OPTIONAL
*/
void (*rport_flush_queue)(void);
/*
* Receive a frame to a local port.
* Receive a frame for a local port.
*
* STATUS: OPTIONAL
*/
void (*lport_recv)(struct fc_lport *lp, struct fc_seq *sp,
struct fc_frame *fp);
/*
* Reset the local port.
*
* STATUS: OPTIONAL
*/
int (*lport_reset)(struct fc_lport *);
/**
* Remote Port interfaces
/*
* Create a remote port
*/
struct fc_rport *(*rport_create)(struct fc_disc_port *);
/*
* Initiates the RP state machine. It is called from the LP module.
@ -500,26 +508,33 @@ struct libfc_function_template {
* - PLOGI
* - PRLI
* - RTV
*
* STATUS: OPTIONAL
*/
int (*rport_login)(struct fc_rport *rport);
/*
* Logoff, and remove the rport from the transport if
* it had been added. This will send a LOGO to the target.
*
* STATUS: OPTIONAL
*/
int (*rport_logoff)(struct fc_rport *rport);
/*
* Recieve a request from a remote port.
*
* STATUS: OPTIONAL
*/
void (*rport_recv_req)(struct fc_seq *, struct fc_frame *,
struct fc_rport *);
struct fc_rport *(*rport_lookup)(const struct fc_lport *, u32);
/**
* FCP interfaces
/*
* lookup an rport by it's port ID.
*
* STATUS: OPTIONAL
*/
struct fc_rport *(*rport_lookup)(const struct fc_lport *, u32);
/*
* Send a fcp cmd from fsp pkt.
@ -527,30 +542,38 @@ struct libfc_function_template {
*
* The resp handler is called when FCP_RSP received.
*
* STATUS: OPTIONAL
*/
int (*fcp_cmd_send)(struct fc_lport *lp, struct fc_fcp_pkt *fsp,
void (*resp)(struct fc_seq *, struct fc_frame *fp,
void *arg));
/*
* Used at least durring linkdown and reset
* Cleanup the FCP layer, used durring link down and reset
*
* STATUS: OPTIONAL
*/
void (*fcp_cleanup)(struct fc_lport *lp);
/*
* Abort all I/O on a local port
*
* STATUS: OPTIONAL
*/
void (*fcp_abort_io)(struct fc_lport *lp);
/**
* Discovery interfaces
/*
* Receive a request for the discovery layer.
*
* STATUS: OPTIONAL
*/
void (*disc_recv_req)(struct fc_seq *,
struct fc_frame *, struct fc_lport *);
/*
* Start discovery for a local port.
*
* STATUS: OPTIONAL
*/
void (*disc_start)(void (*disc_callback)(struct fc_lport *,
enum fc_disc_event),
@ -559,6 +582,8 @@ struct libfc_function_template {
/*
* Stop discovery for a given lport. This will remove
* all discovered rports
*
* STATUS: OPTIONAL
*/
void (*disc_stop) (struct fc_lport *);
@ -566,6 +591,8 @@ struct libfc_function_template {
* Stop discovery for a given lport. This will block
* until all discovered rports are deleted from the
* FC transport class
*
* STATUS: OPTIONAL
*/
void (*disc_stop_final) (struct fc_lport *);
};
@ -603,7 +630,8 @@ struct fc_lport {
/* Operational Information */
struct libfc_function_template tt;
u16 link_status;
u8 link_up;
u8 qfull;
enum fc_lport_state state;
unsigned long boot_time;
@ -637,7 +665,7 @@ struct fc_lport {
struct delayed_work disc_work;
};
/**
/*
* FC_LPORT HELPER FUNCTIONS
*****************************/
static inline void *lport_priv(const struct fc_lport *lp)
@ -669,7 +697,7 @@ static inline void fc_lport_state_enter(struct fc_lport *lp,
}
/**
/*
* LOCAL PORT LAYER
*****************************/
int fc_lport_init(struct fc_lport *lp);
@ -703,12 +731,6 @@ void fc_linkup(struct fc_lport *);
*/
void fc_linkdown(struct fc_lport *);
/*
* Pause and unpause traffic.
*/
void fc_pause(struct fc_lport *);
void fc_unpause(struct fc_lport *);
/*
* Configure the local port.
*/
@ -725,19 +747,19 @@ int fc_lport_reset(struct fc_lport *);
int fc_set_mfs(struct fc_lport *lp, u32 mfs);
/**
/*
* REMOTE PORT LAYER
*****************************/
int fc_rport_init(struct fc_lport *lp);
void fc_rport_terminate_io(struct fc_rport *rp);
/**
/*
* DISCOVERY LAYER
*****************************/
int fc_disc_init(struct fc_lport *lp);
/**
/*
* SCSI LAYER
*****************************/
/*
@ -798,7 +820,7 @@ int fc_change_queue_type(struct scsi_device *sdev, int tag_type);
*/
void fc_fcp_destroy(struct fc_lport *);
/**
/*
* ELS/CT interface
*****************************/
/*
@ -807,7 +829,7 @@ void fc_fcp_destroy(struct fc_lport *);
int fc_elsct_init(struct fc_lport *lp);
/**
/*
* EXCHANGE MANAGER LAYER
*****************************/
/*
@ -916,7 +938,7 @@ struct fc_seq *fc_seq_start_next(struct fc_seq *sp);
* If s_id is non-zero, reset only exchanges originating from that FID.
* If d_id is non-zero, reset only exchanges sending to that FID.
*/
void fc_exch_mgr_reset(struct fc_exch_mgr *, u32 s_id, u32 d_id);
void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id);
/*
* Functions for fc_functions_template

9
include/scsi/libfcoe.h
View File

@ -46,6 +46,7 @@ struct fcoe_softc {
struct net_device *phys_dev; /* device with ethtool_ops */
struct packet_type fcoe_packet_type;
struct sk_buff_head fcoe_pending_queue;
u8 fcoe_pending_queue_active;
u8 dest_addr[ETH_ALEN];
u8 ctl_src_addr[ETH_ALEN];
@ -58,16 +59,10 @@ struct fcoe_softc {
u8 address_mode;
};
static inline struct fcoe_softc *fcoe_softc(
const struct fc_lport *lp)
{
return (struct fcoe_softc *)lport_priv(lp);
}
static inline struct net_device *fcoe_netdev(
const struct fc_lport *lp)
{
return fcoe_softc(lp)->real_dev;
return ((struct fcoe_softc *)lport_priv(lp))->real_dev;
}
static inline struct fcoe_hdr *skb_fcoe_header(const struct sk_buff *skb)