sfc: Add option to use a separate channel for TX completions

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In a bidirectional forwarding test, we find that the best performance
is achieved by sending the TX completion interrupts from one NIC to a
CPU which shares an L2 cache with RX completion interrupts from the
other NIC.  To facilitate this, add an option (through a module
parameter) to create separate channels for RX and TX completion with
separate IRQs when MSI-X is available.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Neil Turton 2008-12-12 21:41:06 -08:00 • committed by David S. Miller

parent 84ae48fe4c

commit 28b581ab0a

2 changed files with 28 additions and 15 deletions

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41

drivers/net/sfc/efx.c

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2

drivers/net/sfc/net_driver.h

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