diff options
Diffstat (limited to 'samples/bpf/tcbpf2_kern.c')
| -rw-r--r-- | samples/bpf/tcbpf2_kern.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/samples/bpf/tcbpf2_kern.c b/samples/bpf/tcbpf2_kern.c index 9a8db7bd6db4..fa260c750fb1 100644 --- a/samples/bpf/tcbpf2_kern.c +++ b/samples/bpf/tcbpf2_kern.c @@ -593,4 +593,20 @@ int _ip6ip6_get_tunnel(struct __sk_buff *skb) return TC_ACT_OK; } +SEC("xfrm_get_state") +int _xfrm_get_state(struct __sk_buff *skb) +{ + struct bpf_xfrm_state x; + char fmt[] = "reqid %d spi 0x%x remote ip 0x%x\n"; + int ret; + + ret = bpf_skb_get_xfrm_state(skb, 0, &x, sizeof(x), 0); + if (ret < 0) + return TC_ACT_OK; + + bpf_trace_printk(fmt, sizeof(fmt), x.reqid, bpf_ntohl(x.spi), + bpf_ntohl(x.remote_ipv4)); + return TC_ACT_OK; +} + char _license[] SEC("license") = "GPL"; |