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1 /*
2  * Copyright (C) 2009 Johannes Berg <[email protected]>
3  *
4  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation;
8  * version 2.1 of the License (not later!)
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this program; if not,  see <http://www.gnu.org/licenses>
17  *
18  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
19  */
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23
24 #include "event-parse.h"
25 #include "trace-seq.h"
26
27 #define INDENT 65
28
29 static void print_string(struct trace_seq *s, struct tep_event *event,
30                          const char *name, const void *data)
31 {
32         struct tep_format_field *f = tep_find_field(event, name);
33         int offset;
34         int length;
35
36         if (!f) {
37                 trace_seq_printf(s, "NOTFOUND:%s", name);
38                 return;
39         }
40
41         offset = f->offset;
42         length = f->size;
43
44         if (!strncmp(f->type, "__data_loc", 10)) {
45                 unsigned long long v;
46                 if (tep_read_number_field(f, data, &v)) {
47                         trace_seq_printf(s, "invalid_data_loc");
48                         return;
49                 }
50                 offset = v & 0xffff;
51                 length = v >> 16;
52         }
53
54         trace_seq_printf(s, "%.*s", length, (char *)data + offset);
55 }
56
57 #define SF(fn)  tep_print_num_field(s, fn ":%d", event, fn, record, 0)
58 #define SFX(fn) tep_print_num_field(s, fn ":%#x", event, fn, record, 0)
59 #define SP()    trace_seq_putc(s, ' ')
60
61 static int drv_bss_info_changed(struct trace_seq *s,
62                                 struct tep_record *record,
63                                 struct tep_event *event, void *context)
64 {
65         void *data = record->data;
66
67         print_string(s, event, "wiphy_name", data);
68         trace_seq_printf(s, " vif:");
69         print_string(s, event, "vif_name", data);
70         tep_print_num_field(s, "(%d)", event, "vif_type", record, 1);
71
72         trace_seq_printf(s, "\n%*s", INDENT, "");
73         SF("assoc"); SP();
74         SF("aid"); SP();
75         SF("cts"); SP();
76         SF("shortpre"); SP();
77         SF("shortslot"); SP();
78         SF("dtimper"); SP();
79         trace_seq_printf(s, "\n%*s", INDENT, "");
80         SF("bcnint"); SP();
81         SFX("assoc_cap"); SP();
82         SFX("basic_rates"); SP();
83         SF("enable_beacon");
84         trace_seq_printf(s, "\n%*s", INDENT, "");
85         SF("ht_operation_mode");
86
87         return 0;
88 }
89
90 int TEP_PLUGIN_LOADER(struct tep_handle *pevent)
91 {
92         tep_register_event_handler(pevent, -1, "mac80211",
93                                    "drv_bss_info_changed",
94                                    drv_bss_info_changed, NULL);
95         return 0;
96 }
97
98 void TEP_PLUGIN_UNLOADER(struct tep_handle *pevent)
99 {
100         tep_unregister_event_handler(pevent, -1, "mac80211",
101                                      "drv_bss_info_changed",
102                                      drv_bss_info_changed, NULL);
103 }
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