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[SCSI] libfcoe: convert FIP to lock with mutex instead of spin lock

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It turns out most of the FIP work is now done from worker threads
or process context now, so there's no need to use a spin lock.

Change to use mutex instead of spin lock and delayed_work instead
of a timer.

This will make it nicer for the VN_port to VN_port feature that
will interact more with the libfc layers requiring that
spinlocks not be held.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Joe Eykholt 2010-07-20 15:19:47 -07:00 • committed by James Bottomley
parent f90377abca
commit fdb068c6cd
2 changed files with 57 additions and 68 deletions
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9
include/scsi/libfcoe.h
View file

@ -75,14 +75,12 @@ enum fip_state {
* @flogi_count: number of FLOGI attempts in AUTO mode.
* @map_dest: use the FC_MAP mode for destination MAC addresses.
* @spma: supports SPMA server-provided MACs mode
* @send_ctlr_ka: need to send controller keep alive
* @send_port_ka: need to send port keep alives
* @dest_addr: MAC address of the selected FC forwarder.
* @ctl_src_addr: the native MAC address of our local port.
* @send: LLD-supplied function to handle sending FIP Ethernet frames
* @update_mac: LLD-supplied function to handle changes to MAC addresses.
* @get_src_addr: LLD-supplied function to supply a source MAC address.
* @lock: lock protecting this structure.
* @ctlr_mutex: lock protecting this structure.
*
* This structure is used by all FCoE drivers. It contains information
* needed by all FCoE low-level drivers (LLDs) as well as internal state
@ -106,18 +104,15 @@ struct fcoe_ctlr {
u16 user_mfs;
u16 flogi_oxid;
u8 flogi_count;
u8 reset_req;
u8 map_dest;
u8 spma;
u8 send_ctlr_ka;
u8 send_port_ka;
u8 dest_addr[ETH_ALEN];
u8 ctl_src_addr[ETH_ALEN];
void (*send)(struct fcoe_ctlr *, struct sk_buff *);
void (*update_mac)(struct fc_lport *, u8 *addr);
u8 * (*get_src_addr)(struct fc_lport *);
spinlock_t lock;
struct mutex ctlr_mutex;
};
/**