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net: xdp: report flags program was installed with on query
Some drivers enforce that flags on program replacement and removal must match the flags passed on install. This leaves the possibility open to enable simultaneous loading of XDP programs both to HW and DRV. Allow such drivers to report the flags back to the stack. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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2 changed files with 3 additions and 0 deletions
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@ -3392,6 +3392,7 @@ static int nfp_net_xdp(struct net_device *netdev, struct netdev_bpf *xdp)
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if (nn->dp.bpf_offload_xdp)
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xdp->prog_attached = XDP_ATTACHED_HW;
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xdp->prog_id = nn->xdp_prog ? nn->xdp_prog->aux->id : 0;
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xdp->flags = nn->xdp_prog ? nn->xdp_flags : 0;
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return 0;
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case BPF_OFFLOAD_VERIFIER_PREP:
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return nfp_app_bpf_verifier_prep(nn->app, nn, xdp);
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@ -820,6 +820,8 @@ struct netdev_bpf {
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struct {
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u8 prog_attached;
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u32 prog_id;
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/* flags with which program was installed */
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u32 prog_flags;
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};
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/* BPF_OFFLOAD_VERIFIER_PREP */
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struct {
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