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[SCSI] libfc: provide space for LLD after remote port structure

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Add pre-zeroed space after the allocation for fc_rport_priv
for use by the lower-level driver.

This is primarily for VN2VN FIP mode, but could be used in
other ways someday.

The space required is specified in lport->rport_priv_size.

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 15:19:42 -07:00 committed by James Bottomley
parent 42e9041467
commit f90377abca
2 changed files with 3 additions and 1 deletions
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2
drivers/scsi/libfc/fc_rport.c
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@ -127,7 +127,7 @@ static struct fc_rport_priv *fc_rport_create(struct fc_lport *lport,
if (rdata) if (rdata)
return rdata; return rdata;
rdata = kzalloc(sizeof(*rdata), GFP_KERNEL); rdata = kzalloc(sizeof(*rdata) + lport->rport_priv_size, GFP_KERNEL);
if (!rdata) if (!rdata)
return NULL; return NULL;

2
include/scsi/libfc.h
View file

@ -799,6 +799,7 @@ struct fc_disc {
* @mfs: The maximum Fibre Channel payload size * @mfs: The maximum Fibre Channel payload size
* @max_retry_count: The maximum retry attempts * @max_retry_count: The maximum retry attempts
* @max_rport_retry_count: The maximum remote port retry attempts * @max_rport_retry_count: The maximum remote port retry attempts
* @rport_priv_size: Size needed by driver after struct fc_rport_priv
* @lro_xid: The maximum XID for LRO * @lro_xid: The maximum XID for LRO
* @lso_max: The maximum large offload send size * @lso_max: The maximum large offload send size
* @fcts: FC-4 type mask * @fcts: FC-4 type mask
@ -848,6 +849,7 @@ struct fc_lport {
u32 mfs; u32 mfs;
u8 max_retry_count; u8 max_retry_count;
u8 max_rport_retry_count; u8 max_rport_retry_count;
u16 rport_priv_size;
u16 link_speed; u16 link_speed;
u16 link_supported_speeds; u16 link_supported_speeds;
u16 lro_xid; u16 lro_xid;