68f8e3d4b9
LWT_XMIT to test L3 case, TC to test L2 case. v2: - s/veth_ifindex/ipip_ifindex/ in two places (Martin) - add comment about which condition triggers the rejection (Martin) Signed-off-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/r/20221121180340.1983627-2-sdf@google.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
37 lines
692 B
C
37 lines
692 B
C
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_endian.h>
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char _license[] SEC("license") = "GPL";
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int ifindex;
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int ret;
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SEC("lwt_xmit")
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int redirect_ingress(struct __sk_buff *skb)
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{
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ret = bpf_clone_redirect(skb, ifindex, BPF_F_INGRESS);
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return 0;
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}
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SEC("lwt_xmit")
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int redirect_egress(struct __sk_buff *skb)
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{
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ret = bpf_clone_redirect(skb, ifindex, 0);
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return 0;
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}
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SEC("tc")
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int tc_redirect_ingress(struct __sk_buff *skb)
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{
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ret = bpf_clone_redirect(skb, ifindex, BPF_F_INGRESS);
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return 0;
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}
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SEC("tc")
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int tc_redirect_egress(struct __sk_buff *skb)
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{
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ret = bpf_clone_redirect(skb, ifindex, 0);
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return 0;
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}
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