Merge remote-tracking branch 'regulator/topic/tps65218' into regulator-next

[linux-2.6-microblaze.git] / samples / bpf / tcbpf2_kern.c

diff --git a/samples/bpf/tcbpf2_kern.c b/samples/bpf/tcbpf2_kern.c
index 270edcc..370b749 100644 (file)
--- a/samples/bpf/tcbpf2_kern.c
+++ b/samples/bpf/tcbpf2_kern.c
@@ -17,6 +17,7 @@
 #include <uapi/linux/pkt_cls.h>
 #include <net/ipv6.h>
 #include "bpf_helpers.h"
+#include "bpf_endian.h"
 
 #define _htonl __builtin_bswap32
 #define ERROR(ret) do {\
@@ -38,6 +39,10 @@ struct vxlan_metadata {
        u32     gbp;
 };
 
+struct erspan_metadata {
+       __be32 index;
+};
+
 SEC("gre_set_tunnel")
 int _gre_set_tunnel(struct __sk_buff *skb)
 {
@@ -76,6 +81,63 @@ int _gre_get_tunnel(struct __sk_buff *skb)
        return TC_ACT_OK;
 }
 
+SEC("erspan_set_tunnel")
+int _erspan_set_tunnel(struct __sk_buff *skb)
+{
+       struct bpf_tunnel_key key;
+       struct erspan_metadata md;
+       int ret;
+
+       __builtin_memset(&key, 0x0, sizeof(key));
+       key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
+       key.tunnel_id = 2;
+       key.tunnel_tos = 0;
+       key.tunnel_ttl = 64;
+
+       ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_ZERO_CSUM_TX);
+       if (ret < 0) {
+               ERROR(ret);
+               return TC_ACT_SHOT;
+       }
+
+       md.index = htonl(123);
+       ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
+       if (ret < 0) {
+               ERROR(ret);
+               return TC_ACT_SHOT;
+       }
+
+       return TC_ACT_OK;
+}
+
+SEC("erspan_get_tunnel")
+int _erspan_get_tunnel(struct __sk_buff *skb)
+{
+       char fmt[] = "key %d remote ip 0x%x erspan index 0x%x\n";
+       struct bpf_tunnel_key key;
+       struct erspan_metadata md;
+       u32 index;
+       int ret;
+
+       ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
+       if (ret < 0) {
+               ERROR(ret);
+               return TC_ACT_SHOT;
+       }
+
+       ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
+       if (ret < 0) {
+               ERROR(ret);
+               return TC_ACT_SHOT;
+       }
+
+       index = bpf_ntohl(md.index);
+       bpf_trace_printk(fmt, sizeof(fmt),
+                       key.tunnel_id, key.remote_ipv4, index);
+
+       return TC_ACT_OK;
+}
+
 SEC("vxlan_set_tunnel")
 int _vxlan_set_tunnel(struct __sk_buff *skb)
 {
@@ -378,5 +440,4 @@ int _ip6ip6_get_tunnel(struct __sk_buff *skb)
        return TC_ACT_OK;
 }
 
-
 char _license[] SEC("license") = "GPL";