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[SCSI] fcoe, libfc: use single frame allocation API

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Cleans up frame allocation APIs to have just single fc_frame_alloc API.

Removes _fc_frame_alloc, renames __fc_frame_alloc to _fc_frame_alloc.

Modifies fc_fcp_send_data for removed _fc_frame_alloc, fc_fcp_send_data
was the only user of removed _fc_frame_alloc.

Also Adds check in fc_frame_alloc to do mod by 4 for only non-zero
len value.

This patch is prep work to fix can_queue reducing in next patch.
Single fc_frame_alloc API helps in fixing can_queue reducing in
next patch.

Signed-off-by: Vasu Dev <vasu.dev@intel.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:
Vasu Dev
2009-11-03 11:47:55 -08:00
committed by James Bottomley
parent 1875f27e29
commit a7bbc7f40a
3 changed files with 10 additions and 27 deletions
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16
include/scsi/fc_frame.h
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@@ -100,17 +100,7 @@ static inline void fc_frame_init(struct fc_frame *fp)
}
struct fc_frame *fc_frame_alloc_fill(struct fc_lport *, size_t payload_len);
struct fc_frame *__fc_frame_alloc(size_t payload_len);
/*
* Get frame for sending via port.
*/
static inline struct fc_frame *_fc_frame_alloc(struct fc_lport *dev,
size_t payload_len)
{
return __fc_frame_alloc(payload_len);
}
struct fc_frame *_fc_frame_alloc(size_t payload_len);
/*
* Allocate fc_frame structure and buffer. Set the initial length to
@@ -124,10 +114,10 @@ static inline struct fc_frame *fc_frame_alloc(struct fc_lport *dev, size_t len)
* Note: Since len will often be a constant multiple of 4,
* this check will usually be evaluated and eliminated at compile time.
*/
if ((len % 4) != 0)
if (len && len % 4)
fp = fc_frame_alloc_fill(dev, len);
else
fp = _fc_frame_alloc(dev, len);
fp = _fc_frame_alloc(len);
return fp;
}