diff options
| author | Joe Eykholt <jeykholt@cisco.com> | 2011-01-29 01:04:08 +0100 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2011-02-12 18:01:21 +0100 |
| commit | 1a5c2d7e5c8ef239804cb08b68363e0cd2f74a3d (patch) | |
| tree | 1131440f3cb543911c0df18fb64e476b27866559 | |
| parent | [SCSI] libfc: add hook for FC-4 provider registration (diff) | |
| download | linux-1a5c2d7e5c8ef239804cb08b68363e0cd2f74a3d.tar.xz linux-1a5c2d7e5c8ef239804cb08b68363e0cd2f74a3d.zip | |
[SCSI] libfc: add method for setting handler for incoming exchange
Add a method for setting handler for incoming exchange.
For multi-sequence exchanges, this allows the target driver
to add a response handler for handling subsequent sequences,
and exchange manager resets.
The new function is called fc_seq_set_resp().
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>
| -rw-r--r-- | drivers/scsi/libfc/fc_exch.c | 19 | ||||
| -rw-r--r-- | include/scsi/libfc.h | 10 |
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c index e0b5b15c355b..1f124c0351b4 100644 --- a/drivers/scsi/libfc/fc_exch.c +++ b/drivers/scsi/libfc/fc_exch.c @@ -558,6 +558,22 @@ static struct fc_seq *fc_seq_start_next(struct fc_seq *sp) return sp; } +/* + * Set the response handler for the exchange associated with a sequence. + */ +static void fc_seq_set_resp(struct fc_seq *sp, + void (*resp)(struct fc_seq *, struct fc_frame *, + void *), + void *arg) +{ + struct fc_exch *ep = fc_seq_exch(sp); + + spin_lock_bh(&ep->ex_lock); + ep->resp = resp; + ep->arg = arg; + spin_unlock_bh(&ep->ex_lock); +} + /** * fc_seq_exch_abort() - Abort an exchange and sequence * @req_sp: The sequence to be aborted @@ -2329,6 +2345,9 @@ int fc_exch_init(struct fc_lport *lport) if (!lport->tt.seq_start_next) lport->tt.seq_start_next = fc_seq_start_next; + if (!lport->tt.seq_set_resp) + lport->tt.seq_set_resp = fc_seq_set_resp; + if (!lport->tt.exch_seq_send) lport->tt.exch_seq_send = fc_exch_seq_send; diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h index 3ae2a760b4f3..3b8f5d83611b 100644 --- a/include/scsi/libfc.h +++ b/include/scsi/libfc.h @@ -555,6 +555,16 @@ struct libfc_function_template { struct fc_seq *(*seq_start_next)(struct fc_seq *); /* + * Set a response handler for the exchange of the sequence. + * + * STATUS: OPTIONAL + */ + void (*seq_set_resp)(struct fc_seq *sp, + void (*resp)(struct fc_seq *, struct fc_frame *, + void *), + void *arg); + + /* * Assign a sequence for an incoming request frame. * * STATUS: OPTIONAL |