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Refactor dev_io_ops read & write to specify struct packet *,
it may simplify a bit a caller logic. And it allow to keep
required members within one struct packet object.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Simplify a bit of creation rfraw device by delegating it to the dev_io
API, also in case the output device is pcap file the --rfraw option
sets the link type to ieee80211 radio tap.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Trim output name to IFNAMSIZ only if the output is a networking device,
otherwise the following error occured if output name is greater then
IFNAMSIZ:
$ trafgen -n 1 '{ udp() }' -o /tmp/xxxxxxxxxxxxxx.pcap
No networking device or pcap file: /tmp/xxxxxxxxxx
Failed to open output device
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Add trafgen_dev.c module which provides generic way of
reading and writing packets to/from networking device or a pcap file.
Also allow to handle output pcap file via '-o, --out, --dev' option.
It might be useful in future for testing some link protocols which is
not easy to capture (e.g. wlan packets) w/o having some special setup.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
[tklauser: fix whitespace issues]
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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