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 int timeout_ms; 26 int proto; 27 /* +ve: Passed to listen() as-is. 28 * 0: Default when the test does not set 29 * a particular value during the struct init. 30 * It is changed to 1 before passing to listen(). 31 * Most tests only have one on-going connection. 32 * -ve: It is changed to 0 before passing to listen(). 33 * It is useful to force syncookie without 34 * changing the "tcp_syncookies" sysctl from 1 to 2. 35 */ 36 int backlog; 37 int (*post_socket_cb)(int fd, void *opts); 38 void *cb_opts; 39 }; 40 41 /* ipv4 test vector */ 42 struct ipv4_packet { 43 struct ethhdr eth; 44 struct iphdr iph; 45 struct tcphdr tcp; 46 } __packed; 47 extern struct ipv4_packet pkt_v4; 48 49 /* ipv6 test vector */ 50 struct ipv6_packet { 51 struct ethhdr eth; 52 struct ipv6hdr iph; 53 struct tcphdr tcp; 54 } __packed; 55 extern struct ipv6_packet pkt_v6; 56 57 int settimeo(int fd, int timeout_ms); 58 int start_server_str(int family, int type, const char *addr_str, __u16 port, 59 const struct network_helper_opts *opts); 60 int start_server(int family, int type, const char *addr, __u16 port, 61 int timeout_ms); 62 int *start_reuseport_server(int family, int type, const char *addr_str, 63 __u16 port, int timeout_ms, 64 unsigned int nr_listens); 65 int start_server_addr(int type, const struct sockaddr_storage *addr, socklen_t len, 66 const struct network_helper_opts *opts); 67 void free_fds(int *fds, unsigned int nr_close_fds); 68 int client_socket(int family, int type, 69 const struct network_helper_opts *opts); 70 int connect_to_addr(int type, const struct sockaddr_storage *addr, socklen_t len, 71 const struct network_helper_opts *opts); 72 int connect_to_addr_str(int family, int type, const char *addr_str, __u16 port, 73 const struct network_helper_opts *opts); 74 int connect_to_fd(int server_fd, int timeout_ms); 75 int connect_to_fd_opts(int server_fd, const struct network_helper_opts *opts); 76 int connect_fd_to_fd(int client_fd, int server_fd, int timeout_ms); 77 int fastopen_connect(int server_fd, const char *data, unsigned int data_len, 78 int timeout_ms); 79 int make_sockaddr(int family, const char *addr_str, __u16 port, 80 struct sockaddr_storage *addr, socklen_t *len); 81 char *ping_command(int family); 82 int get_socket_local_port(int sock_fd); 83 int get_hw_ring_size(char *ifname, struct ethtool_ringparam *ring_param); 84 int set_hw_ring_size(char *ifname, struct ethtool_ringparam *ring_param); 85 86 struct nstoken; 87 /** 88 * open_netns() - Switch to specified network namespace by name. 89 * 90 * Returns token with which to restore the original namespace 91 * using close_netns(). 92 */ 93 struct nstoken *open_netns(const char *name); 94 void close_netns(struct nstoken *token); 95 int send_recv_data(int lfd, int fd, uint32_t total_bytes); 96 97 static __u16 csum_fold(__u32 csum) 98 { 99 csum = (csum & 0xffff) + (csum >> 16); 100 csum = (csum & 0xffff) + (csum >> 16); 101 102 return (__u16)~csum; 103 } 104 105 static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr, 106 __u32 len, __u8 proto, 107 __wsum csum) 108 { 109 __u64 s = csum; 110 111 s += (__u32)saddr; 112 s += (__u32)daddr; 113 s += htons(proto + len); 114 s = (s & 0xffffffff) + (s >> 32); 115 s = (s & 0xffffffff) + (s >> 32); 116 117 return csum_fold((__u32)s); 118 } 119 120 static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr, 121 const struct in6_addr *daddr, 122 __u32 len, __u8 proto, 123 __wsum csum) 124 { 125 __u64 s = csum; 126 int i; 127 128 for (i = 0; i < 4; i++) 129 s += (__u32)saddr->s6_addr32[i]; 130 for (i = 0; i < 4; i++) 131 s += (__u32)daddr->s6_addr32[i]; 132 s += htons(proto + len); 133 s = (s & 0xffffffff) + (s >> 32); 134 s = (s & 0xffffffff) + (s >> 32); 135 136 return csum_fold((__u32)s); 137 } 138 139 #endif 140