1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #undef TRACE_SYSTEM 3 #define TRACE_SYSTEM tcp 4 5 #if !defined(_TRACE_TCP_H) || defined(TRACE_HEADER_MULTI_READ) 6 #define _TRACE_TCP_H 7 8 #include <linux/ipv6.h> 9 #include <linux/tcp.h> 10 #include <linux/tracepoint.h> 11 #include <net/ipv6.h> 12 #include <net/tcp.h> 13 #include <linux/sock_diag.h> 14 15 #define TP_STORE_V4MAPPED(__entry, saddr, daddr) \ 16 do { \ 17 struct in6_addr *pin6; \ 18 \ 19 pin6 = (struct in6_addr *)__entry->saddr_v6; \ 20 ipv6_addr_set_v4mapped(saddr, pin6); \ 21 pin6 = (struct in6_addr *)__entry->daddr_v6; \ 22 ipv6_addr_set_v4mapped(daddr, pin6); \ 23 } while (0) 24 25 #if IS_ENABLED(CONFIG_IPV6) 26 #define TP_STORE_ADDRS(__entry, saddr, daddr, saddr6, daddr6) \ 27 do { \ 28 if (sk->sk_family == AF_INET6) { \ 29 struct in6_addr *pin6; \ 30 \ 31 pin6 = (struct in6_addr *)__entry->saddr_v6; \ 32 *pin6 = saddr6; \ 33 pin6 = (struct in6_addr *)__entry->daddr_v6; \ 34 *pin6 = daddr6; \ 35 } else { \ 36 TP_STORE_V4MAPPED(__entry, saddr, daddr); \ 37 } \ 38 } while (0) 39 #else 40 #define TP_STORE_ADDRS(__entry, saddr, daddr, saddr6, daddr6) \ 41 TP_STORE_V4MAPPED(__entry, saddr, daddr) 42 #endif 43 44 /* 45 * tcp event with arguments sk and skb 46 * 47 * Note: this class requires a valid sk pointer; while skb pointer could 48 * be NULL. 49 */ 50 DECLARE_EVENT_CLASS(tcp_event_sk_skb, 51 52 TP_PROTO(const struct sock *sk, const struct sk_buff *skb), 53 54 TP_ARGS(sk, skb), 55 56 TP_STRUCT__entry( 57 __field(const void *, skbaddr) 58 __field(const void *, skaddr) 59 __field(int, state) 60 __field(__u16, sport) 61 __field(__u16, dport) 62 __field(__u16, family) 63 __array(__u8, saddr, 4) 64 __array(__u8, daddr, 4) 65 __array(__u8, saddr_v6, 16) 66 __array(__u8, daddr_v6, 16) 67 ), 68 69 TP_fast_assign( 70 struct inet_sock *inet = inet_sk(sk); 71 __be32 *p32; 72 73 __entry->skbaddr = skb; 74 __entry->skaddr = sk; 75 __entry->state = sk->sk_state; 76 77 __entry->sport = ntohs(inet->inet_sport); 78 __entry->dport = ntohs(inet->inet_dport); 79 __entry->family = sk->sk_family; 80 81 p32 = (__be32 *) __entry->saddr; 82 *p32 = inet->inet_saddr; 83 84 p32 = (__be32 *) __entry->daddr; 85 *p32 = inet->inet_daddr; 86 87 TP_STORE_ADDRS(__entry, inet->inet_saddr, inet->inet_daddr, 88 sk->sk_v6_rcv_saddr, sk->sk_v6_daddr); 89 ), 90 91 TP_printk("family=%s sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c state=%s", 92 show_family_name(__entry->family), 93 __entry->sport, __entry->dport, __entry->saddr, __entry->daddr, 94 __entry->saddr_v6, __entry->daddr_v6, 95 show_tcp_state_name(__entry->state)) 96 ); 97 98 DEFINE_EVENT(tcp_event_sk_skb, tcp_retransmit_skb, 99 100 TP_PROTO(const struct sock *sk, const struct sk_buff *skb), 101 102 TP_ARGS(sk, skb) 103 ); 104 105 /* 106 * skb of trace_tcp_send_reset is the skb that caused RST. In case of 107 * active reset, skb should be NULL 108 */ 109 DEFINE_EVENT(tcp_event_sk_skb, tcp_send_reset, 110 111 TP_PROTO(const struct sock *sk, const struct sk_buff *skb), 112 113 TP_ARGS(sk, skb) 114 ); 115 116 /* 117 * tcp event with arguments sk 118 * 119 * Note: this class requires a valid sk pointer. 120 */ 121 DECLARE_EVENT_CLASS(tcp_event_sk, 122 123 TP_PROTO(struct sock *sk), 124 125 TP_ARGS(sk), 126 127 TP_STRUCT__entry( 128 __field(const void *, skaddr) 129 __field(__u16, sport) 130 __field(__u16, dport) 131 __field(__u16, family) 132 __array(__u8, saddr, 4) 133 __array(__u8, daddr, 4) 134 __array(__u8, saddr_v6, 16) 135 __array(__u8, daddr_v6, 16) 136 __field(__u64, sock_cookie) 137 ), 138 139 TP_fast_assign( 140 struct inet_sock *inet = inet_sk(sk); 141 __be32 *p32; 142 143 __entry->skaddr = sk; 144 145 __entry->sport = ntohs(inet->inet_sport); 146 __entry->dport = ntohs(inet->inet_dport); 147 __entry->family = sk->sk_family; 148 149 p32 = (__be32 *) __entry->saddr; 150 *p32 = inet->inet_saddr; 151 152 p32 = (__be32 *) __entry->daddr; 153 *p32 = inet->inet_daddr; 154 155 TP_STORE_ADDRS(__entry, inet->inet_saddr, inet->inet_daddr, 156 sk->sk_v6_rcv_saddr, sk->sk_v6_daddr); 157 158 __entry->sock_cookie = sock_gen_cookie(sk); 159 ), 160 161 TP_printk("family=%s sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c sock_cookie=%llx", 162 show_family_name(__entry->family), 163 __entry->sport, __entry->dport, 164 __entry->saddr, __entry->daddr, 165 __entry->saddr_v6, __entry->daddr_v6, 166 __entry->sock_cookie) 167 ); 168 169 DEFINE_EVENT(tcp_event_sk, tcp_receive_reset, 170 171 TP_PROTO(struct sock *sk), 172 173 TP_ARGS(sk) 174 ); 175 176 DEFINE_EVENT(tcp_event_sk, tcp_destroy_sock, 177 178 TP_PROTO(struct sock *sk), 179 180 TP_ARGS(sk) 181 ); 182 183 DEFINE_EVENT(tcp_event_sk, tcp_rcv_space_adjust, 184 185 TP_PROTO(struct sock *sk), 186 187 TP_ARGS(sk) 188 ); 189 190 TRACE_EVENT(tcp_retransmit_synack, 191 192 TP_PROTO(const struct sock *sk, const struct request_sock *req), 193 194 TP_ARGS(sk, req), 195 196 TP_STRUCT__entry( 197 __field(const void *, skaddr) 198 __field(const void *, req) 199 __field(__u16, sport) 200 __field(__u16, dport) 201 __field(__u16, family) 202 __array(__u8, saddr, 4) 203 __array(__u8, daddr, 4) 204 __array(__u8, saddr_v6, 16) 205 __array(__u8, daddr_v6, 16) 206 ), 207 208 TP_fast_assign( 209 struct inet_request_sock *ireq = inet_rsk(req); 210 __be32 *p32; 211 212 __entry->skaddr = sk; 213 __entry->req = req; 214 215 __entry->sport = ireq->ir_num; 216 __entry->dport = ntohs(ireq->ir_rmt_port); 217 __entry->family = sk->sk_family; 218 219 p32 = (__be32 *) __entry->saddr; 220 *p32 = ireq->ir_loc_addr; 221 222 p32 = (__be32 *) __entry->daddr; 223 *p32 = ireq->ir_rmt_addr; 224 225 TP_STORE_ADDRS(__entry, ireq->ir_loc_addr, ireq->ir_rmt_addr, 226 ireq->ir_v6_loc_addr, ireq->ir_v6_rmt_addr); 227 ), 228 229 TP_printk("family=%s sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c", 230 show_family_name(__entry->family), 231 __entry->sport, __entry->dport, 232 __entry->saddr, __entry->daddr, 233 __entry->saddr_v6, __entry->daddr_v6) 234 ); 235 236 #include <trace/events/net_probe_common.h> 237 238 TRACE_EVENT(tcp_probe, 239 240 TP_PROTO(struct sock *sk, struct sk_buff *skb), 241 242 TP_ARGS(sk, skb), 243 244 TP_STRUCT__entry( 245 /* sockaddr_in6 is always bigger than sockaddr_in */ 246 __array(__u8, saddr, sizeof(struct sockaddr_in6)) 247 __array(__u8, daddr, sizeof(struct sockaddr_in6)) 248 __field(__u16, sport) 249 __field(__u16, dport) 250 __field(__u16, family) 251 __field(__u32, mark) 252 __field(__u16, data_len) 253 __field(__u32, snd_nxt) 254 __field(__u32, snd_una) 255 __field(__u32, snd_cwnd) 256 __field(__u32, ssthresh) 257 __field(__u32, snd_wnd) 258 __field(__u32, srtt) 259 __field(__u32, rcv_wnd) 260 __field(__u64, sock_cookie) 261 ), 262 263 TP_fast_assign( 264 const struct tcphdr *th = (const struct tcphdr *)skb->data; 265 const struct inet_sock *inet = inet_sk(sk); 266 const struct tcp_sock *tp = tcp_sk(sk); 267 268 memset(__entry->saddr, 0, sizeof(struct sockaddr_in6)); 269 memset(__entry->daddr, 0, sizeof(struct sockaddr_in6)); 270 271 TP_STORE_ADDR_PORTS(__entry, inet, sk); 272 273 /* For filtering use */ 274 __entry->sport = ntohs(inet->inet_sport); 275 __entry->dport = ntohs(inet->inet_dport); 276 __entry->mark = skb->mark; 277 __entry->family = sk->sk_family; 278 279 __entry->data_len = skb->len - __tcp_hdrlen(th); 280 __entry->snd_nxt = tp->snd_nxt; 281 __entry->snd_una = tp->snd_una; 282 __entry->snd_cwnd = tp->snd_cwnd; 283 __entry->snd_wnd = tp->snd_wnd; 284 __entry->rcv_wnd = tp->rcv_wnd; 285 __entry->ssthresh = tcp_current_ssthresh(sk); 286 __entry->srtt = tp->srtt_us >> 3; 287 __entry->sock_cookie = sock_gen_cookie(sk); 288 ), 289 290 TP_printk("family=%s src=%pISpc dest=%pISpc mark=%#x data_len=%d snd_nxt=%#x snd_una=%#x snd_cwnd=%u ssthresh=%u snd_wnd=%u srtt=%u rcv_wnd=%u sock_cookie=%llx", 291 show_family_name(__entry->family), 292 __entry->saddr, __entry->daddr, __entry->mark, 293 __entry->data_len, __entry->snd_nxt, __entry->snd_una, 294 __entry->snd_cwnd, __entry->ssthresh, __entry->snd_wnd, 295 __entry->srtt, __entry->rcv_wnd, __entry->sock_cookie) 296 ); 297 298 #endif /* _TRACE_TCP_H */ 299 300 /* This part must be outside protection */ 301 #include <trace/define_trace.h> 302