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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
14#define TP_STORE_V4MAPPED(__entry, saddr, daddr) \
15 do { \
16 struct in6_addr *pin6; \
17 \
18 pin6 = (struct in6_addr *)__entry->saddr_v6; \
19 ipv6_addr_set_v4mapped(saddr, pin6); \
20 pin6 = (struct in6_addr *)__entry->daddr_v6; \
21 ipv6_addr_set_v4mapped(daddr, pin6); \
22 } while (0)
23
24#if IS_ENABLED(CONFIG_IPV6)
25#define TP_STORE_ADDRS(__entry, saddr, daddr, saddr6, daddr6) \
26 do { \
27 if (sk->sk_family == AF_INET6) { \
28 struct in6_addr *pin6; \
29 \
30 pin6 = (struct in6_addr *)__entry->saddr_v6; \
31 *pin6 = saddr6; \
32 pin6 = (struct in6_addr *)__entry->daddr_v6; \
33 *pin6 = daddr6; \
34 } else { \
35 TP_STORE_V4MAPPED(__entry, saddr, daddr); \
36 } \
37 } while (0)
38#else
39#define TP_STORE_ADDRS(__entry, saddr, daddr, saddr6, daddr6) \
40 TP_STORE_V4MAPPED(__entry, saddr, daddr)
41#endif
42
43/*
44 * tcp event with arguments sk and skb
45 *
46 * Note: this class requires a valid sk pointer; while skb pointer could
47 * be NULL.
48 */
49DECLARE_EVENT_CLASS(tcp_event_sk_skb,
50
51 TP_PROTO(const struct sock *sk, const struct sk_buff *skb),
52
53 TP_ARGS(sk, skb),
54
55 TP_STRUCT__entry(
56 __field(const void *, skbaddr)
57 __field(const void *, skaddr)
58 __field(__u16, sport)
59 __field(__u16, dport)
60 __array(__u8, saddr, 4)
61 __array(__u8, daddr, 4)
62 __array(__u8, saddr_v6, 16)
63 __array(__u8, daddr_v6, 16)
64 ),
65
66 TP_fast_assign(
67 struct inet_sock *inet = inet_sk(sk);
68 __be32 *p32;
69
70 __entry->skbaddr = skb;
71 __entry->skaddr = sk;
72
73 __entry->sport = ntohs(inet->inet_sport);
74 __entry->dport = ntohs(inet->inet_dport);
75
76 p32 = (__be32 *) __entry->saddr;
77 *p32 = inet->inet_saddr;
78
79 p32 = (__be32 *) __entry->daddr;
80 *p32 = inet->inet_daddr;
81
82 TP_STORE_ADDRS(__entry, inet->inet_saddr, inet->inet_daddr,
83 sk->sk_v6_rcv_saddr, sk->sk_v6_daddr);
84 ),
85
86 TP_printk("sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c",
87 __entry->sport, __entry->dport, __entry->saddr, __entry->daddr,
88 __entry->saddr_v6, __entry->daddr_v6)
89);
90
91DEFINE_EVENT(tcp_event_sk_skb, tcp_retransmit_skb,
92
93 TP_PROTO(const struct sock *sk, const struct sk_buff *skb),
94
95 TP_ARGS(sk, skb)
96);
97
98/*
99 * skb of trace_tcp_send_reset is the skb that caused RST. In case of
100 * active reset, skb should be NULL
101 */
102DEFINE_EVENT(tcp_event_sk_skb, tcp_send_reset,
103
104 TP_PROTO(const struct sock *sk, const struct sk_buff *skb),
105
106 TP_ARGS(sk, skb)
107);
108
109/*
110 * tcp event with arguments sk
111 *
112 * Note: this class requires a valid sk pointer.
113 */
114DECLARE_EVENT_CLASS(tcp_event_sk,
115
116 TP_PROTO(const struct sock *sk),
117
118 TP_ARGS(sk),
119
120 TP_STRUCT__entry(
121 __field(const void *, skaddr)
122 __field(__u16, sport)
123 __field(__u16, dport)
124 __array(__u8, saddr, 4)
125 __array(__u8, daddr, 4)
126 __array(__u8, saddr_v6, 16)
127 __array(__u8, daddr_v6, 16)
128 ),
129
130 TP_fast_assign(
131 struct inet_sock *inet = inet_sk(sk);
132 __be32 *p32;
133
134 __entry->skaddr = sk;
135
136 __entry->sport = ntohs(inet->inet_sport);
137 __entry->dport = ntohs(inet->inet_dport);
138
139 p32 = (__be32 *) __entry->saddr;
140 *p32 = inet->inet_saddr;
141
142 p32 = (__be32 *) __entry->daddr;
143 *p32 = inet->inet_daddr;
144
145 TP_STORE_ADDRS(__entry, inet->inet_saddr, inet->inet_daddr,
146 sk->sk_v6_rcv_saddr, sk->sk_v6_daddr);
147 ),
148
149 TP_printk("sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c",
150 __entry->sport, __entry->dport,
151 __entry->saddr, __entry->daddr,
152 __entry->saddr_v6, __entry->daddr_v6)
153);
154
155DEFINE_EVENT(tcp_event_sk, tcp_receive_reset,
156
157 TP_PROTO(const struct sock *sk),
158
159 TP_ARGS(sk)
160);
161
162DEFINE_EVENT(tcp_event_sk, tcp_destroy_sock,
163
164 TP_PROTO(const struct sock *sk),
165
166 TP_ARGS(sk)
167);
168
169TRACE_EVENT(tcp_set_state,
170
171 TP_PROTO(const struct sock *sk, const int oldstate, const int newstate),
172
173 TP_ARGS(sk, oldstate, newstate),
174
175 TP_STRUCT__entry(
176 __field(const void *, skaddr)
177 __field(int, oldstate)
178 __field(int, newstate)
179 __field(__u16, sport)
180 __field(__u16, dport)
181 __array(__u8, saddr, 4)
182 __array(__u8, daddr, 4)
183 __array(__u8, saddr_v6, 16)
184 __array(__u8, daddr_v6, 16)
185 ),
186
187 TP_fast_assign(
188 struct inet_sock *inet = inet_sk(sk);
189 __be32 *p32;
190
191 __entry->skaddr = sk;
192 __entry->oldstate = oldstate;
193 __entry->newstate = newstate;
194
195 __entry->sport = ntohs(inet->inet_sport);
196 __entry->dport = ntohs(inet->inet_dport);
197
198 p32 = (__be32 *) __entry->saddr;
199 *p32 = inet->inet_saddr;
200
201 p32 = (__be32 *) __entry->daddr;
202 *p32 = inet->inet_daddr;
203
204 TP_STORE_ADDRS(__entry, inet->inet_saddr, inet->inet_daddr,
205 sk->sk_v6_rcv_saddr, sk->sk_v6_daddr);
206 ),
207
208 TP_printk("sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c oldstate=%s newstate=%s",
209 __entry->sport, __entry->dport,
210 __entry->saddr, __entry->daddr,
211 __entry->saddr_v6, __entry->daddr_v6,
212 show_tcp_state_name(__entry->oldstate),
213 show_tcp_state_name(__entry->newstate))
214);
215
216TRACE_EVENT(tcp_retransmit_synack,
217
218 TP_PROTO(const struct sock *sk, const struct request_sock *req),
219
220 TP_ARGS(sk, req),
221
222 TP_STRUCT__entry(
223 __field(const void *, skaddr)
224 __field(const void *, req)
225 __field(__u16, sport)
226 __field(__u16, dport)
227 __array(__u8, saddr, 4)
228 __array(__u8, daddr, 4)
229 __array(__u8, saddr_v6, 16)
230 __array(__u8, daddr_v6, 16)
231 ),
232
233 TP_fast_assign(
234 struct inet_request_sock *ireq = inet_rsk(req);
235 __be32 *p32;
236
237 __entry->skaddr = sk;
238 __entry->req = req;
239
240 __entry->sport = ireq->ir_num;
241 __entry->dport = ntohs(ireq->ir_rmt_port);
242
243 p32 = (__be32 *) __entry->saddr;
244 *p32 = ireq->ir_loc_addr;
245
246 p32 = (__be32 *) __entry->daddr;
247 *p32 = ireq->ir_rmt_addr;
248
249 TP_STORE_ADDRS(__entry, ireq->ir_loc_addr, ireq->ir_rmt_addr,
250 ireq->ir_v6_loc_addr, ireq->ir_v6_rmt_addr);
251 ),
252
253 TP_printk("sport=%hu dport=%hu saddr=%pI4 daddr=%pI4 saddrv6=%pI6c daddrv6=%pI6c",
254 __entry->sport, __entry->dport,
255 __entry->saddr, __entry->daddr,
256 __entry->saddr_v6, __entry->daddr_v6)
257);
258
259#include <trace/events/net_probe_common.h>
260
261TRACE_EVENT(tcp_probe,
262
263 TP_PROTO(struct sock *sk, struct sk_buff *skb),
264
265 TP_ARGS(sk, skb),
266
267 TP_STRUCT__entry(
268 /* sockaddr_in6 is always bigger than sockaddr_in */
269 __array(__u8, saddr, sizeof(struct sockaddr_in6))
270 __array(__u8, daddr, sizeof(struct sockaddr_in6))
271 __field(__u16, sport)
272 __field(__u16, dport)
273 __field(__u32, mark)
274 __field(__u16, length)
275 __field(__u32, snd_nxt)
276 __field(__u32, snd_una)
277 __field(__u32, snd_cwnd)
278 __field(__u32, ssthresh)
279 __field(__u32, snd_wnd)
280 __field(__u32, srtt)
281 __field(__u32, rcv_wnd)
282 ),
283
284 TP_fast_assign(
285 const struct tcp_sock *tp = tcp_sk(sk);
286 const struct inet_sock *inet = inet_sk(sk);
287
288 memset(__entry->saddr, 0, sizeof(struct sockaddr_in6));
289 memset(__entry->daddr, 0, sizeof(struct sockaddr_in6));
290
291 TP_STORE_ADDR_PORTS(__entry, inet, sk);
292
293 /* For filtering use */
294 __entry->sport = ntohs(inet->inet_sport);
295 __entry->dport = ntohs(inet->inet_dport);
296 __entry->mark = skb->mark;
297
298 __entry->length = skb->len;
299 __entry->snd_nxt = tp->snd_nxt;
300 __entry->snd_una = tp->snd_una;
301 __entry->snd_cwnd = tp->snd_cwnd;
302 __entry->snd_wnd = tp->snd_wnd;
303 __entry->rcv_wnd = tp->rcv_wnd;
304 __entry->ssthresh = tcp_current_ssthresh(sk);
305 __entry->srtt = tp->srtt_us >> 3;
306 ),
307
308 TP_printk("src=%pISpc dest=%pISpc mark=%#x length=%d snd_nxt=%#x "
309 "snd_una=%#x snd_cwnd=%u ssthresh=%u snd_wnd=%u srtt=%u "
310 "rcv_wnd=%u",
311 __entry->saddr, __entry->daddr, __entry->mark,
312 __entry->length, __entry->snd_nxt, __entry->snd_una,
313 __entry->snd_cwnd, __entry->ssthresh, __entry->snd_wnd,
314 __entry->srtt, __entry->rcv_wnd)
315);
316
317#endif /* _TRACE_TCP_H */
318
319/* This part must be outside protection */
320#include <trace/define_trace.h>