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samples/bpf: extend test_tunnel_bpf.sh with ERSPAN

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Extend existing tests for vxlan, gre, geneve, ipip to
include ERSPAN tunnel.

Signed-off-by: William Tu <u9012063@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
William Tu
2017-08-25 09:21:29 -07:00
committad av David S. Miller
förälder 1a66a836da
incheckning ef88f89c83
2 ändrade filer med 91 tillägg och 1 borttagningar
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63
samples/bpf/tcbpf2_kern.c
Visa fil

@@ -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";