skbedit - SKB editing action
tc ... action skbedit [ queue_mapping
QUEUE_MAPPING ] [ priority PRIORITY ] [ mark
MARK[/MASK] ] [ ptype PTYPE ] [
inheritdsfield ]
The skbedit action allows one to change a packet's
associated meta data. It complements the pedit action, which in turn
allows one to change parts of the packet data itself.
The most unique feature of skbedit is its ability to decide
over which queue of an interface with multiple transmit queues the packet is
to be sent out. The number of available transmit queues is reflected by
sysfs entries within /sys/class/net/<interface>/queues with
name tx-N (where N is the actual queue number).
- queue_mapping
QUEUE_MAPPING
- Override the packet's transmit queue. Useful when applied to packets
transmitted over MQ-capable network interfaces. QUEUE_MAPPING is an
unsigned 16bit value in decimal format.
- priority
PRIORITY
- Override the packet classification decision. PRIORITY is either
root, none or a hexadecimal major class ID optionally
followed by a colon (:) and a hexadecimal minor class ID.
- mark
MARK[/MASK]
- Change the packet's firewall mark value. MARK is an unsigned 32bit
value in automatically detected format (i.e., prefix with '0x' for
hexadecimal interpretation, etc.). MASK defines the 32-bit mask
selecting bits of mark value. Default is 0xffffffff.
- ptype
PTYPE
- Override the packet's type. Useful for setting packet type to host when
needing to allow ingressing packets with the wrong MAC address but correct
IP address. PTYPE is one of: host, otherhost, broadcast,
multicast
- inheritdsfield
- Override the packet classification decision, and any value specified with
priority, using the information stored in the Differentiated
Services Field of the IPv6/IPv4 header (RFC2474).