gve: Add XDP REDIRECT support for GQI-QPL format

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This patch contains the following changes:
1) Support for XDP REDIRECT action on rx
2) ndo_xdp_xmit callback support

In GQI-QPL queue format, the driver needs to allocate a fixed size
memory, the size specified by vNIC device, for RX/TX and register this
memory as a bounce buffer with the vNIC device when a queue is created.
The number of pages in the bounce buffer is limited and the pages need to
be made available to the vNIC by copying the RX data out to prevent
head-of-line blocking. The XDP_REDIRECT packets are therefore immediately
copied to a newly allocated page.

Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
Reviewed-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Praveen Kaligineedi 2023-03-15 16:33:11 -07:00 • committed by David S. Miller

parent 75eaae158b

commit 39a7f4aa3e

5 changed files with 138 additions and 17 deletions

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15

drivers/net/ethernet/google/gve/gve.h

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26

drivers/net/ethernet/google/gve/gve_ethtool.c

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19

drivers/net/ethernet/google/gve/gve_main.c

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47

drivers/net/ethernet/google/gve/gve_rx.c

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48

drivers/net/ethernet/google/gve/gve_tx.c

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