cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

plugin_mac80211.c (2091B)

      1// SPDX-License-Identifier: LGPL-2.1
      2/*
      3 * Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net>
      4 */
      5#include <stdio.h>
      6#include <stdlib.h>
      7#include <string.h>
      8
      9#include "event-parse.h"
     10#include "trace-seq.h"
     11
     12#define INDENT 65
     13
     14static void print_string(struct trace_seq *s, struct tep_event *event,
     15			 const char *name, const void *data)
     16{
     17	struct tep_format_field *f = tep_find_field(event, name);
     18	int offset;
     19	int length;
     20
     21	if (!f) {
     22		trace_seq_printf(s, "NOTFOUND:%s", name);
     23		return;
     24	}
     25
     26	offset = f->offset;
     27	length = f->size;
     28
     29	if (!strncmp(f->type, "__data_loc", 10)) {
     30		unsigned long long v;
     31		if (tep_read_number_field(f, data, &v)) {
     32			trace_seq_printf(s, "invalid_data_loc");
     33			return;
     34		}
     35		offset = v & 0xffff;
     36		length = v >> 16;
     37	}
     38
     39	trace_seq_printf(s, "%.*s", length, (char *)data + offset);
     40}
     41
     42#define SF(fn)	tep_print_num_field(s, fn ":%d", event, fn, record, 0)
     43#define SFX(fn)	tep_print_num_field(s, fn ":%#x", event, fn, record, 0)
     44#define SP()	trace_seq_putc(s, ' ')
     45
     46static int drv_bss_info_changed(struct trace_seq *s,
     47				struct tep_record *record,
     48				struct tep_event *event, void *context)
     49{
     50	void *data = record->data;
     51
     52	print_string(s, event, "wiphy_name", data);
     53	trace_seq_printf(s, " vif:");
     54	print_string(s, event, "vif_name", data);
     55	tep_print_num_field(s, "(%d)", event, "vif_type", record, 1);
     56
     57	trace_seq_printf(s, "\n%*s", INDENT, "");
     58	SF("assoc"); SP();
     59	SF("aid"); SP();
     60	SF("cts"); SP();
     61	SF("shortpre"); SP();
     62	SF("shortslot"); SP();
     63	SF("dtimper"); SP();
     64	trace_seq_printf(s, "\n%*s", INDENT, "");
     65	SF("bcnint"); SP();
     66	SFX("assoc_cap"); SP();
     67	SFX("basic_rates"); SP();
     68	SF("enable_beacon");
     69	trace_seq_printf(s, "\n%*s", INDENT, "");
     70	SF("ht_operation_mode");
     71
     72	return 0;
     73}
     74
     75int TEP_PLUGIN_LOADER(struct tep_handle *tep)
     76{
     77	tep_register_event_handler(tep, -1, "mac80211",
     78				   "drv_bss_info_changed",
     79				   drv_bss_info_changed, NULL);
     80	return 0;
     81}
     82
     83void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
     84{
     85	tep_unregister_event_handler(tep, -1, "mac80211",
     86				     "drv_bss_info_changed",
     87				     drv_bss_info_changed, NULL);
     88}