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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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15
drivers/scsi/libfc/fc_fcp.c
View file

@ -505,18 +505,11 @@ static int fc_fcp_send_data(struct fc_fcp_pkt *fsp, struct fc_seq *seq,
*/
if (tlen % 4)
using_sg = 0;
if (using_sg) {
fp = _fc_frame_alloc(lport, 0);
if (!fp)
return -ENOMEM;
} else {
fp = fc_frame_alloc(lport, tlen);
if (!fp)
return -ENOMEM;
fp = fc_frame_alloc(lport, using_sg ? 0 : tlen);
if (!fp)
return -ENOMEM;
data = (void *)(fr_hdr(fp)) +
sizeof(struct fc_frame_header);
}
data = fc_frame_header_get(fp) + 1;
fh_parm_offset = frame_offset;
fr_max_payload(fp) = fsp->max_payload;
}