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Move setting next protocol id field from higher protocols (ARP, IPv4)
to Ethernet. It makes code little more generic w/o checking each lower
protocol and setting specific field id.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Add set_next_proto callback to proto_hdr struct to allow lower
protocol set next protocol id by enum proto_id.
Extended proto_lower_default_add(...) function to take upper protocol
to delegate it's id to lower protocol to set next protocol field.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Change proto_header_init(...) and proto_lower_default_add(...)
functions to return struct proto_hdr * to do not call
proto_current_header(...) after, so it makes more sense to get struct
proto_hdr * right after initializing protocol by id.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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This fixes the following sparse warning:
trafgen_l2.c:13:20: warning: symbol 'eth_fields' was not declared. Should it be static?
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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The IEEE 802.3 standard commonly refers to the field specifying the
upper layer protocol as Ethertype, not protocol. Thus, also support the
keywords "etype" and "type" for this field.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Add ARP protocol header fields generation. By default htype ethernet (1)
and ptype IPv4 (0x0800) and the corresponding hlen/plen values will be
initialized and the opcode is set to ARP Request (1).
Source MAC and IP address are set to the device's addresses if not
specified.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
[tk: rephrase and extend commit message]
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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Add trafgen_l2.c module for generating L2 related headers.
Add Ethernet header generating. By default source MAC address
is used from the specified output device.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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