diff options
author | Lorenzo Bianconi <lorenzo@kernel.org> | 2021-03-08 12:06:58 +0100 |
---|---|---|
committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-03-18 16:38:51 +0100 |
commit | fdc13979f91e664717f47eb8c49094e4b7f202e3 (patch) | |
tree | 453bf46ea6d3314d4c61a31651c87a066370f2b4 /drivers/net/ethernet/freescale/dpaa | |
parent | 6b28276512fdfc010e25c833973328e51a56eafb (diff) | |
download | linux-fdc13979f91e664717f47eb8c49094e4b7f202e3.tar.bz2 |
bpf, devmap: Move drop error path to devmap for XDP_REDIRECT
We want to change the current ndo_xdp_xmit drop semantics because it will
allow us to implement better queue overflow handling. This is working
towards the larger goal of a XDP TX queue-hook. Move XDP_REDIRECT error
path handling from each XDP ethernet driver to devmap code. According to
the new APIs, the driver running the ndo_xdp_xmit pointer, will break tx
loop whenever the hw reports a tx error and it will just return to devmap
caller the number of successfully transmitted frames. It will be devmap
responsibility to free dropped frames.
Move each XDP ndo_xdp_xmit capable driver to the new APIs:
- veth
- virtio-net
- mvneta
- mvpp2
- socionext
- amazon ena
- bnxt
- freescale (dpaa2, dpaa)
- xen-frontend
- qede
- ice
- igb
- ixgbe
- i40e
- mlx5
- ti (cpsw, cpsw-new)
- tun
- sfc
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Camelia Groza <camelia.groza@nxp.com>
Acked-by: Edward Cree <ecree.xilinx@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Shay Agroskin <shayagr@amazon.com>
Link: https://lore.kernel.org/bpf/ed670de24f951cfd77590decf0229a0ad7fd12f6.1615201152.git.lorenzo@kernel.org
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa')
-rw-r--r-- | drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c index 720dc99bd1fc..177c020bf34a 100644 --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c @@ -3081,7 +3081,7 @@ static int dpaa_xdp_xmit(struct net_device *net_dev, int n, struct xdp_frame **frames, u32 flags) { struct xdp_frame *xdpf; - int i, err, drops = 0; + int i, nxmit = 0; if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) return -EINVAL; @@ -3091,14 +3091,12 @@ static int dpaa_xdp_xmit(struct net_device *net_dev, int n, for (i = 0; i < n; i++) { xdpf = frames[i]; - err = dpaa_xdp_xmit_frame(net_dev, xdpf); - if (err) { - xdp_return_frame_rx_napi(xdpf); - drops++; - } + if (dpaa_xdp_xmit_frame(net_dev, xdpf)) + break; + nxmit++; } - return n - drops; + return nxmit; } static int dpaa_ts_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |