mvpp2: XDP TX support

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Add the transmit part of XDP support, which includes:
- support for XDP_TX in mvpp2_xdp()
- .ndo_xdp_xmit hook for AF_XDP and XDP_REDIRECT with mvpp2 as destination

mvpp2_xdp_submit_frame() is a generic function which is called by
mvpp2_xdp_xmit_back() when doing XDP_TX, and by mvpp2_xdp_xmit when
doing AF_XDP or XDP_REDIRECT target.

The buffer allocation has been reworked to be able to map the buffers
as DMA_FROM_DEVICE or DMA_BIDIRECTIONAL depending if native XDP is
in use or not.

Co-developed-by: Sven Auhagen <sven.auhagen@voleatech.de>
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
Signed-off-by: Matteo Croce <mcroce@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Matteo Croce 2020-07-02 16:12:43 +02:00 • committed by David S. Miller

parent 07dd0a7aae

commit c2d6fe6163

2 changed files with 272 additions and 45 deletions

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13

drivers/net/ethernet/marvell/mvpp2/mvpp2.h

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304

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

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