1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __NETWORK_HELPERS_H
3 #define __NETWORK_HELPERS_H
4 #include <sys/socket.h>
5 #include <sys/types.h>
6 #include <linux/types.h>
7 typedef __u16 __sum16;
8 #include <linux/if_ether.h>
9 #include <linux/if_packet.h>
10 #include <linux/ip.h>
11 #include <linux/ipv6.h>
12 #include <netinet/tcp.h>
13 #include <bpf/bpf_endian.h>
14 
15 #define MAGIC_VAL 0x1234
16 #define NUM_ITER 100000
17 #define VIP_NUM 5
18 #define MAGIC_BYTES 123
19 
20 struct network_helper_opts {
21 	const char *cc;
22 	int timeout_ms;
23 	bool must_fail;
24 };
25 
26 /* ipv4 test vector */
27 struct ipv4_packet {
28 	struct ethhdr eth;
29 	struct iphdr iph;
30 	struct tcphdr tcp;
31 } __packed;
32 extern struct ipv4_packet pkt_v4;
33 
34 /* ipv6 test vector */
35 struct ipv6_packet {
36 	struct ethhdr eth;
37 	struct ipv6hdr iph;
38 	struct tcphdr tcp;
39 } __packed;
40 extern struct ipv6_packet pkt_v6;
41 
42 int settimeo(int fd, int timeout_ms);
43 int start_server(int family, int type, const char *addr, __u16 port,
44 		 int timeout_ms);
45 int start_mptcp_server(int family, const char *addr, __u16 port,
46 		       int timeout_ms);
47 int *start_reuseport_server(int family, int type, const char *addr_str,
48 			    __u16 port, int timeout_ms,
49 			    unsigned int nr_listens);
50 void free_fds(int *fds, unsigned int nr_close_fds);
51 int connect_to_fd(int server_fd, int timeout_ms);
52 int connect_to_fd_opts(int server_fd, const struct network_helper_opts *opts);
53 int connect_fd_to_fd(int client_fd, int server_fd, int timeout_ms);
54 int fastopen_connect(int server_fd, const char *data, unsigned int data_len,
55 		     int timeout_ms);
56 int make_sockaddr(int family, const char *addr_str, __u16 port,
57 		  struct sockaddr_storage *addr, socklen_t *len);
58 char *ping_command(int family);
59 int get_socket_local_port(int sock_fd);
60 
61 struct nstoken;
62 /**
63  * open_netns() - Switch to specified network namespace by name.
64  *
65  * Returns token with which to restore the original namespace
66  * using close_netns().
67  */
68 struct nstoken *open_netns(const char *name);
69 void close_netns(struct nstoken *token);
70 #endif
71