Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
42 lines
936 B
C
42 lines
936 B
C
// SPDX-License-Identifier: GPL-2.0
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#define BPF_NO_KFUNC_PROTOTYPES
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#include "vmlinux.h"
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#include "bpf_tracing_net.h"
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#include <bpf/bpf_helpers.h>
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struct bpf_xfrm_info___local {
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u32 if_id;
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int link;
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} __attribute__((preserve_access_index));
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__u32 req_if_id;
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__u32 resp_if_id;
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int bpf_skb_set_xfrm_info(struct __sk_buff *skb_ctx,
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const struct bpf_xfrm_info___local *from) __ksym;
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int bpf_skb_get_xfrm_info(struct __sk_buff *skb_ctx,
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struct bpf_xfrm_info___local *to) __ksym;
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SEC("tc")
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int set_xfrm_info(struct __sk_buff *skb)
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{
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struct bpf_xfrm_info___local info = { .if_id = req_if_id };
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return bpf_skb_set_xfrm_info(skb, &info) ? TC_ACT_SHOT : TC_ACT_UNSPEC;
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}
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SEC("tc")
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int get_xfrm_info(struct __sk_buff *skb)
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{
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struct bpf_xfrm_info___local info = {};
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if (bpf_skb_get_xfrm_info(skb, &info) < 0)
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return TC_ACT_SHOT;
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resp_if_id = info.if_id;
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return TC_ACT_UNSPEC;
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}
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char _license[] SEC("license") = "GPL";
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