sfc: allocate channels for XDP tx queues

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Each CPU needs access to its own queue to allow uncontested
transmission of XDP_TX packets. This means we need to allocate (up
front) enough channels ("xdp transmit channels") to provide at least
one extra tx queue per CPU. These tx queues should not do TSO.

Signed-off-by: Charles McLachlan <cmclachlan@solarflare.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Charles McLachlan 2019-10-31 10:23:49 +00:00 • committed by David S. Miller

parent e45a4fed9d

commit 3990a8fffb

4 changed files with 190 additions and 40 deletions

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14

drivers/net/ethernet/sfc/ef10.c

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180

drivers/net/ethernet/sfc/efx.c

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34

drivers/net/ethernet/sfc/net_driver.h

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2

drivers/net/ethernet/sfc/tx.c

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