net/mlx4_core: Implement resource quota enforcement

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Implements resource quota grant decision when resources are requested,
for the following resources:  QPs, CQs, SRQs, MPTs, MTTs, vlans, MACs,
and Counters.

When granting a resource, the quota system increases the allocated-count
for that slave.

When the slave later frees the resource, its allocated-count is reduced.

A spinlock is used to protect the integrity of each resource's free-pool counter.
(One slave may be in the process of being granted a resource while another
slave has crashed, initiating cleanup of that slave's resource quotas).

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jack Morgenstein 2013-11-03 10:03:25 +02:00 • committed by David S. Miller

parent eb456a68c6

commit 146f3ef4a1

2 changed files with 173 additions and 13 deletions

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1

drivers/net/ethernet/mellanox/mlx4/mlx4.h

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187

drivers/net/ethernet/mellanox/mlx4/resource_tracker.c

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