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Only call wireless_bitrate (and thus the underlying ioctl) if strictly
necessary, i.e. ethtool_bitrate returned 0.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Add device_hw_address() function to get device MAC address.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
[tk: Add len parameter and error out on too short buffers]
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Make the function name more in line with the scheme we use for other
similar functions: the function prefixed with __ returns a negative
error code, the function without prefix panic()'s on error.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Added dissector_sll.c which uses sockaddr_ll to lookup & print
higher L3 layer protocol.
This dissector is mapped by LINKTYPE_LINUX_SLL link type.
Sample output of dissected Netlink & Ethernet packets.
Truncated manually some longer lines by "...":
> nlmon0 20 1434193547s.717131169ns #6
[ Linux "cooked" Pkt Type 4 (outgoing), If Type 824 (netlink), Addr Len 0, Src (), Proto 0x0 ]
[ NLMSG Family 0 (routing), Len 20, Type 0x0003 (DONE)...
> wlp3s0 52 1434194181s.436224709ns #9
[ Linux "cooked" Pkt Type 4 (outgoing), If Type 1 (ether), Addr Len 6, Src (XX:XX:XX:XX:XX:XX), Proto 0x800 ]
[ IPv4 Addr (XXX.XXX.XXX.XXX => 212.42.76.253), Proto (6), TTL (64), TOS (0), ...
), CSum (0x1ef5) is ok ]
[ Geo (local => Ukraine) ]
[ TCP Port (45849 => 443 (https)), SN (0x1744209), AN (0x46ca9611), DataOff (8) ...
[ Chr .....w.Rj).. ]
[ Hex XX XX XX XX XX XX XX XX XX XX XX XX ]
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Move device string convertions funcs (device_type2str, device_addr2str)
from proto_nlmsg.c to dev.c to use them in other modules.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
[ dbkm: minor stylistic fixes ]
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Fix then case when netsniff-ng fails if there is already an existing
monX device while generating one.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Since entering/leaving promiscuous mode also is a device specific
function and all users of the `promisc' module also use `dev', integrate
it there. Also rename the functions to have a `device_' prefix like the
other functions in the module.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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We don't return negative values and the MTU is supposed to be the
(maximum) length of a packet, thus make it of type size_t. Most of the
users in the code store it in size_t already anyway.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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The parameter `ifname' to device_up_and_running() is never modified
inside the function, thus mark it as const.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Add a device_type() method to get the assigned dev->type from the
kernel, and add support for automatic selection of the correct pcap
file header's linktype. This needs to be integrated into the core
code though.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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Move those functions out so that they can be more easily maintained
in its separate file.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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