e917d80473
Add infrastructure to allow user to configure the system so that all the network packets, that are sent to or received from a specific network interface, are sent to remote system for analysis. The captured network packets are placed as a payload in UDP packet, which is then sent inside a tunnel to a remote host. The host can then receive the packets and for example show them in wireshark. Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
63 lines
1.8 KiB
Plaintext
63 lines
1.8 KiB
Plaintext
# Capture network packets
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# Copyright (c) 2021 Intel Corporation
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# SPDX-License-Identifier: Apache-2.0
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config NET_CAPTURE
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bool "Network packet capture support"
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select NET_L2_VIRTUAL
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select NET_L2_VIRTUAL_MGMT
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select NET_L2_IPIP
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select NET_MGMT
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select NET_MGMT_EVENT
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select NET_CONTEXT_NET_PKT_POOL
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help
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This option allows user to capture network packets.
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The captured packets are sent to another host for processing.
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User can use network packet analyzer like Wireshark to
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process the packets.
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The captured network packets are sent using IPIP tunnel
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as a payload in UDP datagrams.
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if NET_CAPTURE
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config NET_CAPTURE_PKT_COUNT
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int "How many network packets to allocate for capture"
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default 4
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help
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This tells how many net_pkt to allocate for capturing
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network traffic. Each network frame sent or received
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will allocate one net_pkt for network metadata.
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Each net_pkt will contain a list of net_buf's that contain
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the actual network data.
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config NET_CAPTURE_BUF_COUNT
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int "How many network buffers to allocate for capture"
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default 16
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help
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This tells how many net_buf to allocate for capturing
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network traffic.
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config NET_CAPTURE_DEVICE_COUNT
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int "Number of network capture devices"
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default 1
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help
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Number of network capture devices. Usually one is enough but
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if one needs to send captured data to multiple different devices,
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then you need to increase the value.
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module = NET_CAPTURE
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module-dep = NET_LOG
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module-str = Log level for network capture API
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module-help = Enables network capture API debug messages.
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source "subsys/net/Kconfig.template.log_config.net"
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config NET_CAPTURE_TX_DEBUG
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bool "Debug sent packets"
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depends on NET_CAPTURE_LOG_LEVEL_DBG
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help
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Enables printing of sent network packet.
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This can produce lot of output so it is disabled by default.
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endif # NET_CAPTURE
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