[SCSI] fcoe: Round-robin based selection of CPU for post-processing of incoming commands

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Problem: Earlier mechanism of selection of CPU was, to select the same CPU
which has received incoming request. Hence in case of rx_id = 0xFFFF,
request was always posted to same NetRx queue, hence only 1 CPU is utilized
for handling the command. It was also causing problem of "running out of
exchanges from per CPU pool of exchanges (in case of DDP offload)

Fix: Implemented new algo. to select CPU for post-processing of
incoming commands when rx_id is unknown. This is simple Round robin
algo. for CPU selection.

Notes/Dependencies: N/A

Signed-off-by: Kiran Patil <kiran.patil@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

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Kiran Patil 2011-06-20 16:59:20 -07:00 • committed by James Bottomley

parent 1ff9918b62

commit 064287eee3

1 changed files with 38 additions and 1 deletions

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drivers/scsi/fcoe/fcoe.c

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