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https://git.kernel.org/pub/scm/network/wireless/iwd.git
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83a2457550
This implements support for "rolling captures" by allowing iwmon to limit the PCAP file size and number of PCAP's that are created. This is a useful feature when long term monitoring is needed. If there is some rare behavior requiring iwmon to run for days, months, or longer the resulting PCAP file would become quite large and fill up disk space. When enabled (command line arguments in subsequent patch) the PCAP file size is checked on each write. If it exceeds the limit a new PCAP file will be created. Once the number of old PCAP files reaches the set limit the oldest PCAP will be removed from disk.
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2013-2019 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <stdint.h>
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#include <sys/time.h>
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struct nlmon;
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enum time_format {
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TIME_FORMAT_DELTA,
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TIME_FORMAT_UTC,
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};
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struct nlmon_config {
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bool nortnl;
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bool nowiphy;
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bool noscan;
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bool noies;
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bool read_only;
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enum time_format time_format;
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/* File size in MB */
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uint32_t pcap_file_size;
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uint32_t pcap_file_count;
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};
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struct nlmon *nlmon_open(uint16_t id, const char *pathname,
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const struct nlmon_config *config);
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void nlmon_close(struct nlmon *nlmon);
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struct nlmon *nlmon_create(uint16_t id, const struct nlmon_config *config);
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void nlmon_destroy(struct nlmon *nlmon);
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void nlmon_print_rtnl(struct nlmon *nlmon, const struct timeval *tv,
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const void *data, uint32_t size);
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void nlmon_print_genl(struct nlmon *nlmon, const struct timeval *tv,
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const void *data, int64_t size);
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void nlmon_print_pae(struct nlmon *nlmon, const struct timeval *tv,
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uint8_t type, int index,
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const void *data, uint32_t size);
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