tc, bpf: add new csum and tunnel signatures

Add new signatures for BPF_FUNC_csum_diff, BPF_FUNC_skb_get_tunnel_opt
and BPF_FUNC_skb_set_tunnel_opt.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

diff --git a/include/bpf_api.h b/include/bpf_api.h
index 4b16d25c3cbd3282429ce4db99bc21c19a533c71..0f278f0c2614499fef3ce193993138ce39592308 100644 (file)
--- a/include/bpf_api.h
+++ b/include/bpf_api.h
@@ -212,6 +212,8 @@ static int BPF_FUNC(l3_csum_replace, struct __sk_buff *skb, uint32_t off,
                    uint32_t from, uint32_t to, uint32_t flags);
 static int BPF_FUNC(l4_csum_replace, struct __sk_buff *skb, uint32_t off,
                    uint32_t from, uint32_t to, uint32_t flags);
+static int BPF_FUNC(csum_diff, const void *from, uint32_t from_size,
+                   const void *to, uint32_t to_size, uint32_t seed);
 
 /* Packet vlan encap/decap */
 static int BPF_FUNC(skb_vlan_push, struct __sk_buff *skb, uint16_t proto,
@@ -225,6 +227,11 @@ static int BPF_FUNC(skb_set_tunnel_key, struct __sk_buff *skb,
                    const struct bpf_tunnel_key *from, uint32_t size,
                    uint32_t flags);
 
+static int BPF_FUNC(skb_get_tunnel_opt, struct __sk_buff *skb,
+                   void *to, uint32_t size);
+static int BPF_FUNC(skb_set_tunnel_opt, struct __sk_buff *skb,
+                   const void *from, uint32_t size);
+
 /** LLVM built-ins, mem*() routines work for constant size */
 
 #ifndef lock_xadd