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| author | Jesper Dangaard Brouer <brouer@redhat.com> | 2018-04-17 16:46:37 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-17 10:50:30 -0400 |
| commit | 44fa2dbd475996ddc8f3a0e6113dee983e0ee3aa (patch) | |
| tree | e0acf0ba6230ebd6e4adb14cb8615e1c08e9dfae /net/core | |
| parent | 039930945a72d9af5ff04ae9b9e60658a52e0770 (diff) | |
| download | linux-44fa2dbd475996ddc8f3a0e6113dee983e0ee3aa.tar.bz2 | |
xdp: transition into using xdp_frame for ndo_xdp_xmit
Changing API ndo_xdp_xmit to take a struct xdp_frame instead of struct
xdp_buff. This brings xdp_return_frame and ndp_xdp_xmit in sync.
This builds towards changing the API further to become a bulk API,
because xdp_buff is not a queue-able object while xdp_frame is.
V4: Adjust for commit 59655a5b6c83 ("tuntap: XDP_TX can use native XDP")
V7: Adjust for commit d9314c474d4f ("i40e: add support for XDP_REDIRECT")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/filter.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index d31aff93270d..3bb0cb98a9be 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2749,13 +2749,18 @@ static int __bpf_tx_xdp(struct net_device *dev, struct xdp_buff *xdp, u32 index) { + struct xdp_frame *xdpf; int err; if (!dev->netdev_ops->ndo_xdp_xmit) { return -EOPNOTSUPP; } - err = dev->netdev_ops->ndo_xdp_xmit(dev, xdp); + xdpf = convert_to_xdp_frame(xdp); + if (unlikely(!xdpf)) + return -EOVERFLOW; + + err = dev->netdev_ops->ndo_xdp_xmit(dev, xdpf); if (err) return err; dev->netdev_ops->ndo_xdp_flush(dev); @@ -2771,11 +2776,19 @@ static int __bpf_tx_xdp_map(struct net_device *dev_rx, void *fwd, if (map->map_type == BPF_MAP_TYPE_DEVMAP) { struct net_device *dev = fwd; + struct xdp_frame *xdpf; if (!dev->netdev_ops->ndo_xdp_xmit) return -EOPNOTSUPP; - err = dev->netdev_ops->ndo_xdp_xmit(dev, xdp); + xdpf = convert_to_xdp_frame(xdp); + if (unlikely(!xdpf)) + return -EOVERFLOW; + + /* TODO: move to inside map code instead, for bulk support + * err = dev_map_enqueue(dev, xdp); + */ + err = dev->netdev_ops->ndo_xdp_xmit(dev, xdpf); if (err) return err; __dev_map_insert_ctx(map, index); |