diff options
| author |   Shay Agroskin <shayagr@amazon.com> | 2020-12-08 20:02:06 +0200 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2020-12-09 15:26:40 -0800 |
| commit | a318c70ad152b24f92870dfe5d93b7675498c68f (patch) | |
| tree | fdb57a1414a09c49fcb780e773c28c62d24104d7 /drivers/net/ethernet/amazon/ena/ena_netdev.h | |
| parent | net: ena: use xdp_frame in XDP TX flow (diff) | |
| download | wireguard-linux-a318c70ad152b24f92870dfe5d93b7675498c68f.tar.xz wireguard-linux-a318c70ad152b24f92870dfe5d93b7675498c68f.zip | |
net: ena: introduce XDP redirect implementation
This patch adds a partial support for the XDP_REDIRECT directive which
instructs the driver to pass the packet to an interface specified by the
program. The directive is passed to the driver by calling bpf_redirect()
or bpf_redirect_map() functions from the eBPF program.
To lay the ground for integration with the existing XDP TX
implementation the patch removes the redundant page ref count increase
in ena_xdp_xmit_frame() and then decrease in ena_clean_rx_irq(). Instead
it only DMA unmaps descriptors for which XDP TX or REDIRECT directive
was received.
The XDP Redirect support is still missing .ndo_xdp_xmit function
implementation, which allows to redirect packet to an ENA interface,
which would be added in a later patch.
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/amazon/ena/ena_netdev.h')
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_netdev.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.h b/drivers/net/ethernet/amazon/ena/ena_netdev.h index c39f41711c31..0fef876c23eb 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.h +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.h @@ -239,6 +239,7 @@ struct ena_stats_rx { u64 xdp_pass; u64 xdp_tx; u64 xdp_invalid; + u64 xdp_redirect; }; struct ena_ring { |