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.
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| @@ -3707,6 +3707,8 @@ struct xdp_md { · 3706 unmodified lines | |||
| 3707 | /* Below access go through struct xdp_rxq_info */ | 3707 | /* Below access go through struct xdp_rxq_info */ |
| 3708 | __u32 ingress_ifindex; /* rxq->dev->ifindex */ | 3708 | __u32 ingress_ifindex; /* rxq->dev->ifindex */ |
| 3709 | __u32 rx_queue_index; /* rxq->queue_index */ | 3709 | __u32 rx_queue_index; /* rxq->queue_index */ |
| 3710 | |||
| 3711 | __u32 egress_ifindex; /* txq->dev->ifindex */ | ||
| 3710 | }; | 3712 | }; |
| 3711 | 3713 | ||
| 3712 | enum sk_action { | 3714 | enum sk_action { |