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| author |   John Fastabend <john.fastabend@gmail.com> | 2017-07-17 09:29:40 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-07-17 09:48:06 -0700 |
| commit | 11393cc9b9be2a1f61559e6fb9c27bc8fa20b1ff (patch) | |
| tree | 9983db89954e9d34d04d16fa023e5df752efd90d /include/linux/netdevice.h | |
| parent | bpf: add bpf_redirect_map helper routine (diff) | |
| download | linux-dev-11393cc9b9be2a1f61559e6fb9c27bc8fa20b1ff.tar.xz linux-dev-11393cc9b9be2a1f61559e6fb9c27bc8fa20b1ff.zip | |
xdp: Add batching support to redirect map
For performance reasons we want to avoid updating the tail pointer in
the driver tx ring as much as possible. To accomplish this we add
batching support to the redirect path in XDP.
This adds another ndo op "xdp_flush" that is used to inform the driver
that it should bump the tail pointer on the TX ring.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 77f5376005e6..03b104908235 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1142,7 +1142,9 @@ struct xfrmdev_ops { * int (*ndo_xdp_xmit)(struct net_device *dev, struct xdp_buff *xdp); * This function is used to submit a XDP packet for transmit on a * netdevice. - * + * void (*ndo_xdp_flush)(struct net_device *dev); + * This function is used to inform the driver to flush a paticular + * xpd tx queue. Must be called on same CPU as xdp_xmit. */ struct net_device_ops { int (*ndo_init)(struct net_device *dev); @@ -1329,6 +1331,7 @@ struct net_device_ops { struct netdev_xdp *xdp); int (*ndo_xdp_xmit)(struct net_device *dev, struct xdp_buff *xdp); + void (*ndo_xdp_flush)(struct net_device *dev); }; /** |