qede: prevent chip hang when increasing channels

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qede requires qed to provide enough resources to accommodate 16 combined
channels, but that upper-bound isn't actually being enforced by it.
Instead, qed inform back to qede how many channels can be opened based on
available resources - but that calculation doesn't really take into account
the resources requested by qede; Instead it considers other FW/HW available
resources.

As a result, if a user would increase the number of channels to more than
16 [e.g., using ethtool] the chip would hang.

This change increments the resources requested by qede to 64 combined
channels instead of 16; This value is an upper bound on the possible
available channels [due to other FW/HW resources].

Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Sudarsana Reddy Kalluru 2016-05-05 00:35:16 -04:00 • committed by David S. Miller

parent 1d2f7b2d95

commit 8e0ddc040a

1 changed files with 2 additions and 4 deletions

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6

drivers/net/ethernet/qlogic/qede/qede_main.c

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