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length in ip4 header could be 0, when the length edit is fixed
this happens if length is not specified or size is specified as, f.g., 100-100
As a result, tcp and icmp would get a negative value for checksum calculation
Change-Id: I55fa1f5e95717ea4149cb3b8c9b73caf88ae7f98
Signed-off-by: Kingwel Xie <kingwel.xie@ericsson.com>
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The session ends up in established state, and is hand-crafted to look
like it was created by the builtin_server.
This will come in handy for injecting packets into tcp46-established,
along with ancillary debug CLI to adjust connection parameters.
Immediate applications include screwball window cases, out of order
segments, paws checking, and so on and so forth.
Debug CLI script:
loop create
set int ip address loop0 6.0.1.1/8
set int state loop0 up
set ip arp loop0 6.0.1.2 feed.face.babe
test tcp server
test tcp session
packet-generator new {
name tcp
limit 1
node ip4-input
size 100-100
interface loop0
no-recycle
data {
TCP: 6.0.1.2 -> 6.0.1.1
TCP: 11234 -> 1234
ACK window 2000
seqnum 0
acknum 0
incrementing 100
}
}
Change-Id: I866c2159376064b7d14f70531022c1fe949258c2
Signed-off-by: Dave Barach <dave@barachs.net>
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Change-Id: I49e5ce0aae6e4ff634024387ceaf7dbc432a0351
Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Kingwel Xie
Dave Barach