Jakub Kicinski 6cbf18a05c
eth: fbnic: support ring size configuration ...
Support ethtool -g / -G. Leverage the code added for -l / -L
to alloc / stop / start / free.
Check parameters against HW min/max but also our own min/max.
Min HW queue is 16 entries, we can't deal with TWQs that small
because of the queue waking logic. Add similar contraint on RCQ
for symmetry.
We need 3 sizes on Rx, as the NIC does header-data split two separate
buffer pools:
(1) head page ring - how many empty pages we post for headers
(2) payload page ring - how many empty pages we post for payloads
(3) completion ring - where NIC produces the Rx descriptors
Acked-by: Joe Damato <jdamato@fastly.com >
Link: https://patch.msgid.link/20250306145150.1757263-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org >
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6cbf18a05c