diff options
| author | David Ahern <dsahern@kernel.org> | 2020-05-29 16:07:14 -0600 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-06-01 14:48:32 -0700 |
| commit | 64b59025c15b244c0954cf52b24fbabfcf5ed8f6 (patch) | |
| tree | 6d47a7f0f047306a1aede92a803a50e629b6c50a /include | |
| parent | fbee97feed9b3e4acdf9590e1f6b4a2eefecfffe (diff) | |
| download | linux-64b59025c15b244c0954cf52b24fbabfcf5ed8f6.tar.bz2 | |
xdp: Add xdp_txq_info to xdp_buff
Add xdp_txq_info as the Tx counterpart to xdp_rxq_info. At the
moment only the device is added. Other fields (queue_index)
can be added as use cases arise.
>From a UAPI perspective, add egress_ifindex to xdp context for
bpf programs to see the Tx device.
Update the verifier to only allow accesses to egress_ifindex by
XDP programs with BPF_XDP_DEVMAP expected attach type.
Signed-off-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20200529220716.75383-4-dsahern@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/xdp.h | 5 | ||||
| -rw-r--r-- | include/uapi/linux/bpf.h | 2 |
2 files changed, 7 insertions, 0 deletions
diff --git a/include/net/xdp.h b/include/net/xdp.h index 90f11760bd12..d54022959491 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -61,12 +61,17 @@ struct xdp_rxq_info { struct xdp_mem_info mem; } ____cacheline_aligned; /* perf critical, avoid false-sharing */ +struct xdp_txq_info { + struct net_device *dev; +}; + struct xdp_buff { void *data; void *data_end; void *data_meta; void *data_hard_start; struct xdp_rxq_info *rxq; + struct xdp_txq_info *txq; u32 frame_sz; /* frame size to deduce data_hard_end/reserved tailroom*/ }; diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index f1e364d69007..f862a58fb567 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -3707,6 +3707,8 @@ struct xdp_md { /* Below access go through struct xdp_rxq_info */ __u32 ingress_ifindex; /* rxq->dev->ifindex */ __u32 rx_queue_index; /* rxq->queue_index */ + + __u32 egress_ifindex; /* txq->dev->ifindex */ }; enum sk_action { |