diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_tunnel_kern.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/test_tunnel_kern.c | 133 |
1 files changed, 122 insertions, 11 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c index 508da4a23c4f..f66af753bbbb 100644 --- a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c +++ b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c @@ -52,6 +52,21 @@ struct vxlan_metadata { __u32 gbp; }; +struct bpf_fou_encap { + __be16 sport; + __be16 dport; +}; + +enum bpf_fou_encap_type { + FOU_BPF_ENCAP_FOU, + FOU_BPF_ENCAP_GUE, +}; + +int bpf_skb_set_fou_encap(struct __sk_buff *skb_ctx, + struct bpf_fou_encap *encap, int type) __ksym; +int bpf_skb_get_fou_encap(struct __sk_buff *skb_ctx, + struct bpf_fou_encap *encap) __ksym; + struct { __uint(type, BPF_MAP_TYPE_ARRAY); __uint(max_entries, 1); @@ -209,7 +224,6 @@ int erspan_get_tunnel(struct __sk_buff *skb) { struct bpf_tunnel_key key; struct erspan_metadata md; - __u32 index; int ret; ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0); @@ -289,7 +303,6 @@ int ip4ip6erspan_get_tunnel(struct __sk_buff *skb) { struct bpf_tunnel_key key; struct erspan_metadata md; - __u32 index; int ret; ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), @@ -324,11 +337,11 @@ int ip4ip6erspan_get_tunnel(struct __sk_buff *skb) SEC("tc") int vxlan_set_tunnel_dst(struct __sk_buff *skb) { - int ret; struct bpf_tunnel_key key; struct vxlan_metadata md; __u32 index = 0; __u32 *local_ip = NULL; + int ret = 0; local_ip = bpf_map_lookup_elem(&local_ip_map, &index); if (!local_ip) { @@ -363,11 +376,11 @@ int vxlan_set_tunnel_dst(struct __sk_buff *skb) SEC("tc") int vxlan_set_tunnel_src(struct __sk_buff *skb) { - int ret; struct bpf_tunnel_key key; struct vxlan_metadata md; __u32 index = 0; __u32 *local_ip = NULL; + int ret = 0; local_ip = bpf_map_lookup_elem(&local_ip_map, &index); if (!local_ip) { @@ -405,8 +418,6 @@ int vxlan_get_tunnel_src(struct __sk_buff *skb) int ret; struct bpf_tunnel_key key; struct vxlan_metadata md; - __u32 orig_daddr; - __u32 index = 0; ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), BPF_F_TUNINFO_FLAGS); @@ -443,9 +454,7 @@ int veth_set_outer_dst(struct __sk_buff *skb) void *data_end = (void *)(long)skb->data_end; struct udphdr *udph; struct iphdr *iph; - __u32 index = 0; int ret = 0; - int shrink; __s64 csum; if ((void *)eth + sizeof(*eth) > data_end) { @@ -494,9 +503,9 @@ SEC("tc") int ip6vxlan_set_tunnel_dst(struct __sk_buff *skb) { struct bpf_tunnel_key key; - int ret; __u32 index = 0; __u32 *local_ip; + int ret = 0; local_ip = bpf_map_lookup_elem(&local_ip_map, &index); if (!local_ip) { @@ -525,9 +534,9 @@ SEC("tc") int ip6vxlan_set_tunnel_src(struct __sk_buff *skb) { struct bpf_tunnel_key key; - int ret; __u32 index = 0; __u32 *local_ip; + int ret = 0; local_ip = bpf_map_lookup_elem(&local_ip_map, &index); if (!local_ip) { @@ -556,9 +565,9 @@ SEC("tc") int ip6vxlan_get_tunnel_src(struct __sk_buff *skb) { struct bpf_tunnel_key key; - int ret; __u32 index = 0; __u32 *local_ip; + int ret = 0; local_ip = bpf_map_lookup_elem(&local_ip_map, &index); if (!local_ip) { @@ -756,6 +765,108 @@ int ipip_get_tunnel(struct __sk_buff *skb) } SEC("tc") +int ipip_gue_set_tunnel(struct __sk_buff *skb) +{ + struct bpf_tunnel_key key = {}; + struct bpf_fou_encap encap = {}; + void *data = (void *)(long)skb->data; + struct iphdr *iph = data; + void *data_end = (void *)(long)skb->data_end; + int ret; + + if (data + sizeof(*iph) > data_end) { + log_err(1); + return TC_ACT_SHOT; + } + + key.tunnel_ttl = 64; + if (iph->protocol == IPPROTO_ICMP) + key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */ + + ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), 0); + if (ret < 0) { + log_err(ret); + return TC_ACT_SHOT; + } + + encap.sport = 0; + encap.dport = bpf_htons(5555); + + ret = bpf_skb_set_fou_encap(skb, &encap, FOU_BPF_ENCAP_GUE); + if (ret < 0) { + log_err(ret); + return TC_ACT_SHOT; + } + + return TC_ACT_OK; +} + +SEC("tc") +int ipip_fou_set_tunnel(struct __sk_buff *skb) +{ + struct bpf_tunnel_key key = {}; + struct bpf_fou_encap encap = {}; + void *data = (void *)(long)skb->data; + struct iphdr *iph = data; + void *data_end = (void *)(long)skb->data_end; + int ret; + + if (data + sizeof(*iph) > data_end) { + log_err(1); + return TC_ACT_SHOT; + } + + key.tunnel_ttl = 64; + if (iph->protocol == IPPROTO_ICMP) + key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */ + + ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), 0); + if (ret < 0) { + log_err(ret); + return TC_ACT_SHOT; + } + + encap.sport = 0; + encap.dport = bpf_htons(5555); + + ret = bpf_skb_set_fou_encap(skb, &encap, FOU_BPF_ENCAP_FOU); + if (ret < 0) { + log_err(ret); + return TC_ACT_SHOT; + } + + return TC_ACT_OK; +} + +SEC("tc") +int ipip_encap_get_tunnel(struct __sk_buff *skb) +{ + int ret; + struct bpf_tunnel_key key = {}; + struct bpf_fou_encap encap = {}; + + ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0); + if (ret < 0) { + log_err(ret); + return TC_ACT_SHOT; + } + + ret = bpf_skb_get_fou_encap(skb, &encap); + if (ret < 0) { + log_err(ret); + return TC_ACT_SHOT; + } + + if (bpf_ntohs(encap.dport) != 5555) + return TC_ACT_SHOT; + + bpf_printk("%d remote ip 0x%x, sport %d, dport %d\n", ret, + key.remote_ipv4, bpf_ntohs(encap.sport), + bpf_ntohs(encap.dport)); + return TC_ACT_OK; +} + +SEC("tc") int ipip6_set_tunnel(struct __sk_buff *skb) { struct bpf_tunnel_key key = {}; |