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[SCSI] fcoe, bnx2fc, libfcoe: SW FCoE and bnx2fc use FCoE Syfs

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This patch has the SW FCoE driver and the bnx2fc
driver make use of the new fcoe_sysfs API added
earlier in this patch series.

After this patch a fcoe_ctlr_device is allocated with
private data in this order.

+------------------+   +------------------+
| fcoe_ctlr_device |   | fcoe_ctlr_device |
+------------------+   +------------------+
| fcoe_ctlr        |   | fcoe_ctlr        |
+------------------+   +------------------+
| fcoe_interface   |   | bnx2fc_interface |
+------------------+   +------------------+

libfcoe also takes part in this new model since it
discovers and manages fcoe_fcf instances. The memory
allocation is different for FCFs. I didn't want to
impact libfcoe's fcoe_fcf processing, so this patch
creates fcoe_fcf_device instances for each discovered
fcoe_fcf. The two are paired using a (void * priv)
member of the fcoe_ctlr_device. This allows libfcoe
to continue maintaining its list of fcoe_fcf instances
and simply attaches and detaches them from existing
or new fcoe_fcf_device instances.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Robert Love 2012-05-22 19:06:26 -07:00 • committed by James Bottomley
parent 9a74e884ee
commit 8d55e507d2
4 changed files with 285 additions and 25 deletions
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17
include/scsi/libfcoe.h
View file

@ -168,9 +168,16 @@ static inline void *fcoe_ctlr_priv(const struct fcoe_ctlr *ctlr)
return (void *)(ctlr + 1);
}
#define fcoe_ctlr_to_ctlr_dev(x) \
(struct fcoe_ctlr_device *)(((struct fcoe_ctlr_device *)(x)) - 1)
/**
* struct fcoe_fcf - Fibre-Channel Forwarder
* @list: list linkage
* @event_work: Work for FC Transport actions queue
* @event: The event to be processed
* @fip: The controller that the FCF was discovered on
* @fcf_dev: The associated fcoe_fcf_device instance
* @time: system time (jiffies) when an advertisement was last received
* @switch_name: WWN of switch from advertisement
* @fabric_name: WWN of fabric from advertisement
@ -192,6 +199,9 @@ static inline void *fcoe_ctlr_priv(const struct fcoe_ctlr *ctlr)
*/
struct fcoe_fcf {
struct list_head list;
struct work_struct event_work;
struct fcoe_ctlr *fip;
struct fcoe_fcf_device *fcf_dev;
unsigned long time;
u64 switch_name;
@ -208,6 +218,9 @@ struct fcoe_fcf {
u8 fd_flags:1;
};
#define fcoe_fcf_to_fcf_dev(x) \
((x)->fcf_dev)
/**
* struct fcoe_rport - VN2VN remote port
* @time: time of create or last beacon packet received from node
@ -343,6 +356,10 @@ void fcoe_queue_timer(ulong lport);
int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen,
struct fcoe_percpu_s *fps);
/* FCoE Sysfs helpers */
void fcoe_fcf_get_selected(struct fcoe_fcf_device *);
void fcoe_ctlr_get_fip_mode(struct fcoe_ctlr_device *);
/**
* struct netdev_list
* A mapping from netdevice to fcoe_transport