gotosocial/vendor/github.com/cilium/ebpf/link/xdp.go
dependabot[bot] 57dc742c76
[chore]: Bump github.com/KimMachineGun/automemlimit from 0.2.4 to 0.2.5 ()
Bumps [github.com/KimMachineGun/automemlimit](https://github.com/KimMachineGun/automemlimit) from 0.2.4 to 0.2.5.
- [Release notes](https://github.com/KimMachineGun/automemlimit/releases)
- [Commits](https://github.com/KimMachineGun/automemlimit/compare/v0.2.4...v0.2.5)

---
updated-dependencies:
- dependency-name: github.com/KimMachineGun/automemlimit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2023-04-03 11:16:17 +02:00

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package link
import (
"fmt"
"github.com/cilium/ebpf"
)
// XDPAttachFlags represents how XDP program will be attached to interface.
type XDPAttachFlags uint32
const (
// XDPGenericMode (SKB) links XDP BPF program for drivers which do
// not yet support native XDP.
XDPGenericMode XDPAttachFlags = 1 << (iota + 1)
// XDPDriverMode links XDP BPF program into the drivers receive path.
XDPDriverMode
// XDPOffloadMode offloads the entire XDP BPF program into hardware.
XDPOffloadMode
)
type XDPOptions struct {
// Program must be an XDP BPF program.
Program *ebpf.Program
// Interface is the interface index to attach program to.
Interface int
// Flags is one of XDPAttachFlags (optional).
//
// Only one XDP mode should be set, without flag defaults
// to driver/generic mode (best effort).
Flags XDPAttachFlags
}
// AttachXDP links an XDP BPF program to an XDP hook.
func AttachXDP(opts XDPOptions) (Link, error) {
if t := opts.Program.Type(); t != ebpf.XDP {
return nil, fmt.Errorf("invalid program type %s, expected XDP", t)
}
if opts.Interface < 1 {
return nil, fmt.Errorf("invalid interface index: %d", opts.Interface)
}
rawLink, err := AttachRawLink(RawLinkOptions{
Program: opts.Program,
Attach: ebpf.AttachXDP,
Target: opts.Interface,
Flags: uint32(opts.Flags),
})
return rawLink, err
}