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 */
50DECLARE_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(__u16, sport)
60 __field(__u16, dport)
61 __array(__u8, saddr, 4)
62 __array(__u8, daddr, 4)
63 __array(__u8, saddr_v6, 16)
64 __array(__u8, daddr_v6, 16)
65 ),
66
67 TP_fast_assign(
68 struct inet_sock *inet = inet_sk(sk);
69 __be32 *p32;
70
71 __entry->skbaddr = skb;
72 __entry->skaddr = sk;
73
74 __entry->sport = ntohs(inet->inet_sport);
75 __entry->dport = ntohs(inet->inet_dport);
76
77 p32 = (__be32 *) __entry->saddr;
78 *p32 = inet->inet_saddr;
79
80 p32 = (__be32 *) __entry->daddr;
81 *p32 = inet->inet_daddr;
82
83 TP_STORE_ADDRS(__entry, inet->inet_saddr, inet->inet_daddr,
84 sk->sk_v6_rcv_saddr, sk->sk_v6_daddr);
85 ),
86
87 TP_printk("sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c",
88 __entry->sport, __entry->dport, __entry->saddr, __entry->daddr,
89 __entry->saddr_v6, __entry->daddr_v6)
90);
91
92DEFINE_EVENT(tcp_event_sk_skb, tcp_retransmit_skb,
93
94 TP_PROTO(const struct sock *sk, const struct sk_buff *skb),
95
96 TP_ARGS(sk, skb)
97);
98
99/*
100 * skb of trace_tcp_send_reset is the skb that caused RST. In case of
101 * active reset, skb should be NULL
102 */
103DEFINE_EVENT(tcp_event_sk_skb, tcp_send_reset,
104
105 TP_PROTO(const struct sock *sk, const struct sk_buff *skb),
106
107 TP_ARGS(sk, skb)
108);
109
110/*
111 * tcp event with arguments sk
112 *
113 * Note: this class requires a valid sk pointer.
114 */
115DECLARE_EVENT_CLASS(tcp_event_sk,
116
117 TP_PROTO(struct sock *sk),
118
119 TP_ARGS(sk),
120
121 TP_STRUCT__entry(
122 __field(const void *, skaddr)
123 __field(__u16, sport)
124 __field(__u16, dport)
125 __array(__u8, saddr, 4)
126 __array(__u8, daddr, 4)
127 __array(__u8, saddr_v6, 16)
128 __array(__u8, daddr_v6, 16)
129 __field(__u64, sock_cookie)
130 ),
131
132 TP_fast_assign(
133 struct inet_sock *inet = inet_sk(sk);
134 __be32 *p32;
135
136 __entry->skaddr = sk;
137
138 __entry->sport = ntohs(inet->inet_sport);
139 __entry->dport = ntohs(inet->inet_dport);
140
141 p32 = (__be32 *) __entry->saddr;
142 *p32 = inet->inet_saddr;
143
144 p32 = (__be32 *) __entry->daddr;
145 *p32 = inet->inet_daddr;
146
147 TP_STORE_ADDRS(__entry, inet->inet_saddr, inet->inet_daddr,
148 sk->sk_v6_rcv_saddr, sk->sk_v6_daddr);
149
150 __entry->sock_cookie = sock_gen_cookie(sk);
151 ),
152
153 TP_printk("sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c sock_cookie=%llx",
154 __entry->sport, __entry->dport,
155 __entry->saddr, __entry->daddr,
156 __entry->saddr_v6, __entry->daddr_v6,
157 __entry->sock_cookie)
158);
159
160DEFINE_EVENT(tcp_event_sk, tcp_receive_reset,
161
162 TP_PROTO(struct sock *sk),
163
164 TP_ARGS(sk)
165);
166
167DEFINE_EVENT(tcp_event_sk, tcp_destroy_sock,
168
169 TP_PROTO(struct sock *sk),
170
171 TP_ARGS(sk)
172);
173
174DEFINE_EVENT(tcp_event_sk, tcp_rcv_space_adjust,
175
176 TP_PROTO(struct sock *sk),
177
178 TP_ARGS(sk)
179);
180
181TRACE_EVENT(tcp_retransmit_synack,
182
183 TP_PROTO(const struct sock *sk, const struct request_sock *req),
184
185 TP_ARGS(sk, req),
186
187 TP_STRUCT__entry(
188 __field(const void *, skaddr)
189 __field(const void *, req)
190 __field(__u16, sport)
191 __field(__u16, dport)
192 __array(__u8, saddr, 4)
193 __array(__u8, daddr, 4)
194 __array(__u8, saddr_v6, 16)
195 __array(__u8, daddr_v6, 16)
196 ),
197
198 TP_fast_assign(
199 struct inet_request_sock *ireq = inet_rsk(req);
200 __be32 *p32;
201
202 __entry->skaddr = sk;
203 __entry->req = req;
204
205 __entry->sport = ireq->ir_num;
206 __entry->dport = ntohs(ireq->ir_rmt_port);
207
208 p32 = (__be32 *) __entry->saddr;
209 *p32 = ireq->ir_loc_addr;
210
211 p32 = (__be32 *) __entry->daddr;
212 *p32 = ireq->ir_rmt_addr;
213
214 TP_STORE_ADDRS(__entry, ireq->ir_loc_addr, ireq->ir_rmt_addr,
215 ireq->ir_v6_loc_addr, ireq->ir_v6_rmt_addr);
216 ),
217
218 TP_printk("sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c",
219 __entry->sport, __entry->dport,
220 __entry->saddr, __entry->daddr,
221 __entry->saddr_v6, __entry->daddr_v6)
222);
223
224#include <trace/events/net_probe_common.h>
225
226TRACE_EVENT(tcp_probe,
227
228 TP_PROTO(struct sock *sk, struct sk_buff *skb),
229
230 TP_ARGS(sk, skb),
231
232 TP_STRUCT__entry(
233 /* sockaddr_in6 is always bigger than sockaddr_in */
234 __array(__u8, saddr, sizeof(struct sockaddr_in6))
235 __array(__u8, daddr, sizeof(struct sockaddr_in6))
236 __field(__u16, sport)
237 __field(__u16, dport)
238 __field(__u32, mark)
239 __field(__u16, data_len)
240 __field(__u32, snd_nxt)
241 __field(__u32, snd_una)
242 __field(__u32, snd_cwnd)
243 __field(__u32, ssthresh)
244 __field(__u32, snd_wnd)
245 __field(__u32, srtt)
246 __field(__u32, rcv_wnd)
247 __field(__u64, sock_cookie)
248 ),
249
250 TP_fast_assign(
251 const struct tcphdr *th = (const struct tcphdr *)skb->data;
252 const struct inet_sock *inet = inet_sk(sk);
253 const struct tcp_sock *tp = tcp_sk(sk);
254
255 memset(__entry->saddr, 0, sizeof(struct sockaddr_in6));
256 memset(__entry->daddr, 0, sizeof(struct sockaddr_in6));
257
258 TP_STORE_ADDR_PORTS(__entry, inet, sk);
259
260 /* For filtering use */
261 __entry->sport = ntohs(inet->inet_sport);
262 __entry->dport = ntohs(inet->inet_dport);
263 __entry->mark = skb->mark;
264
265 __entry->data_len = skb->len - __tcp_hdrlen(th);
266 __entry->snd_nxt = tp->snd_nxt;
267 __entry->snd_una = tp->snd_una;
268 __entry->snd_cwnd = tp->snd_cwnd;
269 __entry->snd_wnd = tp->snd_wnd;
270 __entry->rcv_wnd = tp->rcv_wnd;
271 __entry->ssthresh = tcp_current_ssthresh(sk);
272 __entry->srtt = tp->srtt_us >> 3;
273 __entry->sock_cookie = sock_gen_cookie(sk);
274 ),
275
276 TP_printk("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",
277 __entry->saddr, __entry->daddr, __entry->mark,
278 __entry->data_len, __entry->snd_nxt, __entry->snd_una,
279 __entry->snd_cwnd, __entry->ssthresh, __entry->snd_wnd,
280 __entry->srtt, __entry->rcv_wnd, __entry->sock_cookie)
281);
282
283#endif /* _TRACE_TCP_H */
284
285/* This part must be outside protection */
286#include <trace/define_trace.h>
287