mirror of
https://github.com/apache/nuttx.git
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net:add btsnoop and snoop
Signed-off-by: chengkai <chengkai@xiaomi.com>
This commit is contained in:
chengkai
Xiang Xiao
@@ -0,0 +1,150 @@
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/****************************************************************************
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* include/nuttx/net/snoop.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_NET_SNOOP_H
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#define __INCLUDE_NUTTX_NET_SNOOP_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdint.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Datalink Type:
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*
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* A 32-bit (4 octet) field identifying the type of
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* datalink header used in the packet records that follow.
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* The datalink type codes are listed in the table below:
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*
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* Datalink Type Code
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* ------------- ----
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* IEEE 802.3 0
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* IEEE 802.4 Token Bus 1
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* IEEE 802.5 Token Ring 2
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* IEEE 802.6 Metro Net 3
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* Ethernet 4
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* HDLC 5
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* Character Synchronous 6
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* IBM Channel-to-Channel 7
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* FDDI 8
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* Other 9
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* Unassigned 10 - 4294967295
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*
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* Un-encapsulated HCI (H1) 1001
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* HCI UART (H4) 1002
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* HCI BSCP 1003
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* HCI Serial (H5) 1004
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* Unassigned 1005 - 4294967295
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*
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* More info about snoop datalink type, please refer to
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* https://www.rfc-editor.org/rfc/rfc1761.txt and
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* https://fte.com/webhelpii/hsu/Content/Technical_Information/
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* BT_Snoop_File_Format.htm
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*/
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#define SNOOP_DATALINK_TYPE_TOKENBUS 1
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#define SNOOP_DATALINK_TYPE_TOKERING 2
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#define SNOOP_DATALINK_TYPE_METRONET 3
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#define SNOOP_DATALINK_TYPE_ETHERNET 4
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#define SNOOP_DATALINK_TYPE_HDLC 5
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#define SNOOP_DATALINK_TYPE_CHARSYNC 6
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#define SNOOP_DATALINK_TYPE_IBMC2C 7
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#define SNOOP_DATALINK_TYPE_FDDI 8
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#define SNOOP_DATALINK_TYPE_OTHER 9
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#define SNOOP_DATALINK_HCI_UNENCAP 1001
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#define SNOOP_DATALINK_HCI_UART 1002
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#define SNOOP_DATALINK_HCI_BSCP 1003
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#define SNOOP_DATALINK_HCI_SERIAL 1004
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#define SNOOP_DIRECTION_FLAG_SENT 0 /* Direction flag 0 = Sent */
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#define SNOOP_DIRECTION_FLAG_RECV 1 /* Direction flag 1 = Received */
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struct snoop_s
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{
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bool autosync;
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uint32_t datalink;
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struct file filep;
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: snoop_open
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*
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* Description:
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* This function open snoop file by datalink.
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*
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****************************************************************************/
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int snoop_open(FAR struct snoop_s *snoop, FAR const char *filename,
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uint32_t datalink, bool autosync);
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/****************************************************************************
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* Name: snoop_dump
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*
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* Description:
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* This function dump nbytes buf data into snoop file.
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*
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****************************************************************************/
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int snoop_dump(FAR struct snoop_s *snoop, FAR const void *buf,
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uint32_t nbytes, uint32_t drops, uint32_t flags);
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/****************************************************************************
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* Name: snoop_sync
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*
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* Description:
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* This function sync snoop buffer.
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*
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****************************************************************************/
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int snoop_sync(FAR struct snoop_s *snoop);
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/****************************************************************************
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* Name: snoop_close
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*
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* Description:
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* This function close snoop file.
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*
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****************************************************************************/
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int snoop_close(FAR struct snoop_s *snoop);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCLUDE_NUTTX_NET_SNOOP_H */
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+1
-1
@@ -21,7 +21,7 @@
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# Common utilities
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# Common utilities
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NET_CSRCS += net_dsec2tick.c net_dsec2timeval.c net_timeval2dsec.c
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NET_CSRCS += net_dsec2tick.c net_dsec2timeval.c net_timeval2dsec.c
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NET_CSRCS += net_chksum.c net_ipchksum.c net_incr32.c net_lock.c
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NET_CSRCS += net_chksum.c net_ipchksum.c net_incr32.c net_lock.c net_snoop.c
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# IPv6 utilities
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# IPv6 utilities
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@@ -0,0 +1,398 @@
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/****************************************************************************
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* net/utils/net_snoop.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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||||||
|
* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <endian.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <sys/time.h>
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#include <string.h>
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#include <nuttx/net/snoop.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifndef ARRAY_SIZE
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# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#endif
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#define SNOOP_VERSION_1 1
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#define SNOOP_VERSION_2 2
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/* microseconds since midnight, January 1st, 0 AD nominal Gregorian. */
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#define SNOOP_EPOCH_USEC(tv) (((tv).tv_sec - 0x386d4380ll) * 1000000ll \
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+ (tv).tv_usec + 0x00e03ab44a676000ll)
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/****************************************************************************
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* Private Type Definitions
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****************************************************************************/
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/* The availability of tools to capture, display and interpret packets
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* traversing a network has proven extremely useful in debugging
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* networking problems. The ability to capture packets and store them
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* for later analysis allows one to de-couple the tasks of collecting
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* information about a network problem and analysing that information.
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*
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* More info about snoop datalink type, please refer to
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* https://www.rfc-editor.org/rfc/rfc1761.txt and
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* https://fte.com/webhelpii/hsu/Content/Technical_Information/
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* BT_Snoop_File_Format.htm
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*/
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/* The snoop packet capture file is an array of octets structured as
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* follows:
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*
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* +------------------------+
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* | |
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* | File Header |
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* | |
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* +------------------------+
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* | |
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* | Packet Record |
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* ~ Number 1 ~
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* | |
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* +------------------------+
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* . .
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* . .
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* . .
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* +------------------------+
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* | |
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* | Packet Record |
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* ~ Number N ~
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* | |
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* +------------------------+
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*/
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/* snoop_file_header_s
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*
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* The structure of the File Header is as follows:
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*
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* + Identification Pattern +
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* | |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Version Number |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Datalink Type |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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begin_packed_struct struct snoop_file_header_s
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{
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uint8_t magic[8]; /* Identification Pattern */
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uint32_t version; /* Version Number */
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uint32_t datalink; /* Datalink Type */
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} end_packed_struct;
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/* snoop_packet_header_s
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*
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* The structure of the packet record is as follows:
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*
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Original Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Included Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Packet Record Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Cumulative Drops |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Timestamp Seconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Timestamp Microseconds |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | |
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* . .
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* . Packet Data .
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* . .
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* + +- - - - - - - -+
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* | | Pad |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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begin_packed_struct struct snoop_packet_header_s
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{
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uint32_t orig_len; /* actual length of packet */
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uint32_t incl_len; /* number of octets captured in file */
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union
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{
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uint32_t flags; /* Packet Flags: 1 hci cmd , eg: btsnoop */
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uint32_t rec_len; /* length of record */
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};
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uint32_t cum_drops; /* cumulative number of dropped packets */
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union
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{
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uint64_t ts_usec; /* timestamp microseconds, eg: btsnoop */
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struct
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{
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uint32_t ts_sec; /* timestamp seconds */
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uint32_t ts_usec; /* timestamp microseconds */
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} ts;
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};
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} end_packed_struct;
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/****************************************************************************
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* Private Functions
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|
****************************************************************************/
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/****************************************************************************
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* Name: snoop_dump_packet_header
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*
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* Description:
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* This function fill snoop headr info.
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*
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****************************************************************************/
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static int snoop_dump_packet_header(FAR struct snoop_s *snoop,
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uint32_t bytes, uint32_t drops,
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uint32_t flags)
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{
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struct snoop_packet_header_s header;
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int ret;
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|
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if (!snoop)
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{
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return -EINVAL;
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}
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|
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switch (snoop->datalink)
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{
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case SNOOP_DATALINK_HCI_UNENCAP:
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case SNOOP_DATALINK_HCI_UART:
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case SNOOP_DATALINK_HCI_BSCP:
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case SNOOP_DATALINK_HCI_SERIAL:
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{
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struct timeval tv;
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|
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gettimeofday(&tv, NULL);
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header.ts_usec = htobe64(SNOOP_EPOCH_USEC(tv));
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header.flags = htobe32(flags);
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|
break;
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}
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||||||
|
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||||||
|
case SNOOP_DATALINK_TYPE_TOKENBUS:
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case SNOOP_DATALINK_TYPE_TOKERING:
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case SNOOP_DATALINK_TYPE_METRONET:
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case SNOOP_DATALINK_TYPE_ETHERNET:
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|
case SNOOP_DATALINK_TYPE_HDLC:
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|
case SNOOP_DATALINK_TYPE_CHARSYNC:
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case SNOOP_DATALINK_TYPE_IBMC2C:
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|
case SNOOP_DATALINK_TYPE_FDDI:
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|
case SNOOP_DATALINK_TYPE_OTHER:
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||||||
|
{
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||||||
|
struct timeval tv;
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|
|
||||||
|
gettimeofday(&tv, NULL);
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||||||
|
header.ts.ts_sec = htobe32(tv.tv_sec);
|
||||||
|
header.ts.ts_usec = htobe32(tv.tv_usec);
|
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|
header.rec_len = htobe32(flags);
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|
break;
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||||||
|
}
|
||||||
|
|
||||||
|
default:
|
||||||
|
{
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
header.orig_len = htobe32(bytes);
|
||||||
|
header.incl_len = htobe32(bytes);
|
||||||
|
header.cum_drops = htobe32(drops);
|
||||||
|
|
||||||
|
ret = file_write(&snoop->filep, &header, sizeof(header));
|
||||||
|
if (ret != sizeof(header))
|
||||||
|
{
|
||||||
|
return ret < 0 ? ret : -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
return OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Public Functions
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: snoop_open
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* This function open snoop file by datalink.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
int snoop_open(FAR struct snoop_s *snoop, FAR const char *filename,
|
||||||
|
uint32_t datalink, bool autosync)
|
||||||
|
{
|
||||||
|
struct snoop_file_header_s header;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
if (!snoop)
|
||||||
|
{
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
switch (datalink)
|
||||||
|
{
|
||||||
|
case SNOOP_DATALINK_TYPE_TOKENBUS:
|
||||||
|
case SNOOP_DATALINK_TYPE_TOKERING:
|
||||||
|
case SNOOP_DATALINK_TYPE_METRONET:
|
||||||
|
case SNOOP_DATALINK_TYPE_ETHERNET:
|
||||||
|
case SNOOP_DATALINK_TYPE_HDLC:
|
||||||
|
case SNOOP_DATALINK_TYPE_CHARSYNC:
|
||||||
|
case SNOOP_DATALINK_TYPE_IBMC2C:
|
||||||
|
case SNOOP_DATALINK_TYPE_FDDI:
|
||||||
|
case SNOOP_DATALINK_TYPE_OTHER:
|
||||||
|
{
|
||||||
|
uint8_t snoop_magic[] =
|
||||||
|
{
|
||||||
|
's', 'n', 'o', 'o', 'p', '\0', '\0', '\0'
|
||||||
|
};
|
||||||
|
|
||||||
|
memcpy(header.magic, snoop_magic, ARRAY_SIZE(snoop_magic));
|
||||||
|
header.version = htobe32(SNOOP_VERSION_2);
|
||||||
|
break;
|
||||||
|
};
|
||||||
|
|
||||||
|
case SNOOP_DATALINK_HCI_UNENCAP:
|
||||||
|
case SNOOP_DATALINK_HCI_UART:
|
||||||
|
case SNOOP_DATALINK_HCI_BSCP:
|
||||||
|
case SNOOP_DATALINK_HCI_SERIAL:
|
||||||
|
{
|
||||||
|
uint8_t btsnoop_magic[] =
|
||||||
|
{
|
||||||
|
'b', 't', 's', 'n', 'o', 'o', 'p', '\0'
|
||||||
|
};
|
||||||
|
|
||||||
|
memcpy(header.magic, btsnoop_magic, ARRAY_SIZE(btsnoop_magic));
|
||||||
|
header.version = htobe32(SNOOP_VERSION_1);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
default:
|
||||||
|
{
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = file_open(&snoop->filep, filename, O_RDWR | O_CREAT);
|
||||||
|
if (ret < 0)
|
||||||
|
{
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
snoop->datalink = datalink;
|
||||||
|
snoop->autosync = autosync;
|
||||||
|
header.datalink = htobe32(datalink);
|
||||||
|
|
||||||
|
ret = file_write(&snoop->filep, &header, sizeof(header));
|
||||||
|
if (ret != sizeof(header))
|
||||||
|
{
|
||||||
|
ret = ret < 0 ? ret : -EINVAL;
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
|
||||||
|
return OK;
|
||||||
|
|
||||||
|
error:
|
||||||
|
file_close(&snoop->filep);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: snoop_dump
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* This function dump nbytes buf data into snoop file.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
int snoop_dump(FAR struct snoop_s *snoop, FAR const void *buf,
|
||||||
|
uint32_t nbytes, uint32_t drops, uint32_t flags)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
if (!snoop)
|
||||||
|
{
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = snoop_dump_packet_header(snoop, nbytes, drops, flags);
|
||||||
|
if (ret != OK)
|
||||||
|
{
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = file_write(&snoop->filep, buf, nbytes);
|
||||||
|
if (ret != nbytes)
|
||||||
|
{
|
||||||
|
return ret < 0 ? ret : -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
return snoop->autosync ? snoop_sync(snoop) : OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: snoop_sync
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* This function sync snoop buffer.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
int snoop_sync(FAR struct snoop_s *snoop)
|
||||||
|
{
|
||||||
|
int ret = OK;
|
||||||
|
|
||||||
|
if (!snoop)
|
||||||
|
{
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifndef CONFIG_DISABLE_MOUNTPOINT
|
||||||
|
ret = file_fsync(&snoop->filep);
|
||||||
|
#endif
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/****************************************************************************
|
||||||
|
* Name: snoop_close
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* This function close snoop file.
|
||||||
|
*
|
||||||
|
****************************************************************************/
|
||||||
|
|
||||||
|
int snoop_close(FAR struct snoop_s *snoop)
|
||||||
|
{
|
||||||
|
if (!snoop)
|
||||||
|
{
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
return file_close(&snoop->filep);
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user