summaryrefslogtreecommitdiff
path: root/net/tipc/trace.c
blob: 964823841efe955187d595e87768928b1f7ee658 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
/*
 * net/tipc/trace.c: TIPC tracepoints code
 *
 * Copyright (c) 2018, Ericsson AB
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "ASIS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#define CREATE_TRACE_POINTS
#include "trace.h"

/**
 * socket tuples for filtering in socket traces:
 * (portid, sock type, name type, name lower, name upper)
 */
unsigned long sysctl_tipc_sk_filter[5] __read_mostly = {0, };

/**
 * tipc_skb_dump - dump TIPC skb data
 * @skb: skb to be dumped
 * @more: dump more?
 *        - false: dump only tipc msg data
 *        - true: dump kernel-related skb data and tipc cb[] array as well
 * @buf: returned buffer of dump data in format
 */
int tipc_skb_dump(struct sk_buff *skb, bool more, char *buf)
{
	int i = 0;
	size_t sz = (more) ? SKB_LMAX : SKB_LMIN;
	struct tipc_msg *hdr;
	struct tipc_skb_cb *skbcb;

	if (!skb) {
		i += scnprintf(buf, sz, "msg: (null)\n");
		return i;
	}

	hdr = buf_msg(skb);
	skbcb = TIPC_SKB_CB(skb);

	/* tipc msg data section */
	i += scnprintf(buf, sz, "msg: %u", msg_user(hdr));
	i += scnprintf(buf + i, sz - i, " %u", msg_type(hdr));
	i += scnprintf(buf + i, sz - i, " %u", msg_hdr_sz(hdr));
	i += scnprintf(buf + i, sz - i, " %u", msg_data_sz(hdr));
	i += scnprintf(buf + i, sz - i, " %x", msg_orignode(hdr));
	i += scnprintf(buf + i, sz - i, " %x", msg_destnode(hdr));
	i += scnprintf(buf + i, sz - i, " %u", msg_seqno(hdr));
	i += scnprintf(buf + i, sz - i, " %u", msg_ack(hdr));
	i += scnprintf(buf + i, sz - i, " %u", msg_bcast_ack(hdr));
	switch (msg_user(hdr)) {
	case LINK_PROTOCOL:
		i += scnprintf(buf + i, sz - i, " %c", msg_net_plane(hdr));
		i += scnprintf(buf + i, sz - i, " %u", msg_probe(hdr));
		i += scnprintf(buf + i, sz - i, " %u", msg_peer_stopping(hdr));
		i += scnprintf(buf + i, sz - i, " %u", msg_session(hdr));
		i += scnprintf(buf + i, sz - i, " %u", msg_next_sent(hdr));
		i += scnprintf(buf + i, sz - i, " %u", msg_seq_gap(hdr));
		i += scnprintf(buf + i, sz - i, " %u", msg_bc_snd_nxt(hdr));
		i += scnprintf(buf + i, sz - i, " %u", msg_bc_gap(hdr));
		break;
	case TIPC_LOW_IMPORTANCE:
	case TIPC_MEDIUM_IMPORTANCE:
	case TIPC_HIGH_IMPORTANCE:
	case TIPC_CRITICAL_IMPORTANCE:
	case CONN_MANAGER:
	case SOCK_WAKEUP:
		i += scnprintf(buf + i, sz - i, " | %u", msg_origport(hdr));
		i += scnprintf(buf + i, sz - i, " %u", msg_destport(hdr));
		switch (msg_type(hdr)) {
		case TIPC_NAMED_MSG:
			i += scnprintf(buf + i, sz - i, " %u",
				       msg_nametype(hdr));
			i += scnprintf(buf + i, sz - i, " %u",
				       msg_nameinst(hdr));
			break;
		case TIPC_MCAST_MSG:
			i += scnprintf(buf + i, sz - i, " %u",
				       msg_nametype(hdr));
			i += scnprintf(buf + i, sz - i, " %u",
				       msg_namelower(hdr));
			i += scnprintf(buf + i, sz - i, " %u",
				       msg_nameupper(hdr));
			break;
		default:
			break;
		};
		i += scnprintf(buf + i, sz - i, " | %u",
			       msg_src_droppable(hdr));
		i += scnprintf(buf + i, sz - i, " %u",
			       msg_dest_droppable(hdr));
		i += scnprintf(buf + i, sz - i, " %u", msg_errcode(hdr));
		i += scnprintf(buf + i, sz - i, " %u", msg_reroute_cnt(hdr));
		break;
	default:
		/* need more? */
		break;
	};

	i += scnprintf(buf + i, sz - i, "\n");
	if (!more)
		return i;

	/* kernel-related skb data section */
	i += scnprintf(buf + i, sz - i, "skb: %s",
		       (skb->dev) ? skb->dev->name : "n/a");
	i += scnprintf(buf + i, sz - i, " %u", skb->len);
	i += scnprintf(buf + i, sz - i, " %u", skb->data_len);
	i += scnprintf(buf + i, sz - i, " %u", skb->hdr_len);
	i += scnprintf(buf + i, sz - i, " %u", skb->truesize);
	i += scnprintf(buf + i, sz - i, " %u", skb_cloned(skb));
	i += scnprintf(buf + i, sz - i, " %p", skb->sk);
	i += scnprintf(buf + i, sz - i, " %u", skb_shinfo(skb)->nr_frags);
	i += scnprintf(buf + i, sz - i, " %llx",
		       ktime_to_ms(skb_get_ktime(skb)));
	i += scnprintf(buf + i, sz - i, " %llx\n",
		       ktime_to_ms(skb_hwtstamps(skb)->hwtstamp));

	/* tipc skb cb[] data section */
	i += scnprintf(buf + i, sz - i, "cb[]: %u", skbcb->bytes_read);
	i += scnprintf(buf + i, sz - i, " %u", skbcb->orig_member);
	i += scnprintf(buf + i, sz - i, " %u",
		       jiffies_to_msecs(skbcb->nxt_retr));
	i += scnprintf(buf + i, sz - i, " %u", skbcb->validated);
	i += scnprintf(buf + i, sz - i, " %u", skbcb->chain_imp);
	i += scnprintf(buf + i, sz - i, " %u\n", skbcb->ackers);

	return i;
}

/**
 * tipc_list_dump - dump TIPC skb list/queue
 * @list: list of skbs to be dumped
 * @more: dump more?
 *        - false: dump only the head & tail skbs
 *        - true: dump the first & last 5 skbs
 * @buf: returned buffer of dump data in format
 */
int tipc_list_dump(struct sk_buff_head *list, bool more, char *buf)
{
	int i = 0;
	size_t sz = (more) ? LIST_LMAX : LIST_LMIN;
	u32 count, len;
	struct sk_buff *hskb, *tskb, *skb, *tmp;

	if (!list) {
		i += scnprintf(buf, sz, "(null)\n");
		return i;
	}

	len = skb_queue_len(list);
	i += scnprintf(buf, sz, "len = %d\n", len);

	if (!len)
		return i;

	if (!more) {
		hskb = skb_peek(list);
		i += scnprintf(buf + i, sz - i, "  head ");
		i += tipc_skb_dump(hskb, false, buf + i);
		if (len > 1) {
			tskb = skb_peek_tail(list);
			i += scnprintf(buf + i, sz - i, "  tail ");
			i += tipc_skb_dump(tskb, false, buf + i);
		}
	} else {
		count = 0;
		skb_queue_walk_safe(list, skb, tmp) {
			count++;
			if (count == 6)
				i += scnprintf(buf + i, sz - i, "  .\n  .\n");
			if (count > 5 && count <= len - 5)
				continue;
			i += scnprintf(buf + i, sz - i, "  #%d ", count);
			i += tipc_skb_dump(skb, false, buf + i);
		}
	}
	return i;
}