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 <linux/ethtool.h> 13 #include <linux/sockios.h> 14 #include <linux/err.h> 15 #include <netinet/tcp.h> 16 #include <bpf/bpf_endian.h> 17 #include <net/if.h> 18 19 #define MAGIC_VAL 0x1234 20 #define NUM_ITER 100000 21 #define VIP_NUM 5 22 #define MAGIC_BYTES 123 23 24 struct network_helper_opts { 25 const char *cc; 26 int timeout_ms; 27 bool must_fail; 28 bool noconnect; 29 int type; 30 int proto; 31 }; 32 33 /* ipv4 test vector */ 34 struct ipv4_packet { 35 struct ethhdr eth; 36 struct iphdr iph; 37 struct tcphdr tcp; 38 } __packed; 39 extern struct ipv4_packet pkt_v4; 40 41 /* ipv6 test vector */ 42 struct ipv6_packet { 43 struct ethhdr eth; 44 struct ipv6hdr iph; 45 struct tcphdr tcp; 46 } __packed; 47 extern struct ipv6_packet pkt_v6; 48 49 int settimeo(int fd, int timeout_ms); 50 int start_server(int family, int type, const char *addr, __u16 port, 51 int timeout_ms); 52 int start_mptcp_server(int family, const char *addr, __u16 port, 53 int timeout_ms); 54 int *start_reuseport_server(int family, int type, const char *addr_str, 55 __u16 port, int timeout_ms, 56 unsigned int nr_listens); 57 int start_server_addr(int type, const struct sockaddr_storage *addr, socklen_t len, 58 const struct network_helper_opts *opts); 59 void free_fds(int *fds, unsigned int nr_close_fds); 60 int connect_to_addr(int type, const struct sockaddr_storage *addr, socklen_t len, 61 const struct network_helper_opts *opts); 62 int connect_to_fd(int server_fd, int timeout_ms); 63 int connect_to_fd_opts(int server_fd, const struct network_helper_opts *opts); 64 int connect_fd_to_fd(int client_fd, int server_fd, int timeout_ms); 65 int fastopen_connect(int server_fd, const char *data, unsigned int data_len, 66 int timeout_ms); 67 int make_sockaddr(int family, const char *addr_str, __u16 port, 68 struct sockaddr_storage *addr, socklen_t *len); 69 char *ping_command(int family); 70 int get_socket_local_port(int sock_fd); 71 int get_hw_ring_size(char *ifname, struct ethtool_ringparam *ring_param); 72 int set_hw_ring_size(char *ifname, struct ethtool_ringparam *ring_param); 73 74 struct nstoken; 75 /** 76 * open_netns() - Switch to specified network namespace by name. 77 * 78 * Returns token with which to restore the original namespace 79 * using close_netns(). 80 */ 81 struct nstoken *open_netns(const char *name); 82 void close_netns(struct nstoken *token); 83 int send_recv_data(int lfd, int fd, uint32_t total_bytes); 84 85 static __u16 csum_fold(__u32 csum) 86 { 87 csum = (csum & 0xffff) + (csum >> 16); 88 csum = (csum & 0xffff) + (csum >> 16); 89 90 return (__u16)~csum; 91 } 92 93 static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr, 94 __u32 len, __u8 proto, 95 __wsum csum) 96 { 97 __u64 s = csum; 98 99 s += (__u32)saddr; 100 s += (__u32)daddr; 101 s += htons(proto + len); 102 s = (s & 0xffffffff) + (s >> 32); 103 s = (s & 0xffffffff) + (s >> 32); 104 105 return csum_fold((__u32)s); 106 } 107 108 static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr, 109 const struct in6_addr *daddr, 110 __u32 len, __u8 proto, 111 __wsum csum) 112 { 113 __u64 s = csum; 114 int i; 115 116 for (i = 0; i < 4; i++) 117 s += (__u32)saddr->s6_addr32[i]; 118 for (i = 0; i < 4; i++) 119 s += (__u32)daddr->s6_addr32[i]; 120 s += htons(proto + len); 121 s = (s & 0xffffffff) + (s >> 32); 122 s = (s & 0xffffffff) + (s >> 32); 123 124 return csum_fold((__u32)s); 125 } 126 127 #endif 128