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Ensure that TCP data plus options does not exceed peer's advertised MSS.
Change-Id: I0de824cb3619346f0394dd694942fc1cf33a82b7
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Allows pure loss recovery retransmits only on timeout.
Change-Id: I563cdbf9e7b890a6569350bdbda4f746ace0544e
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Fixes VPP-728, VPP-729, VPP-730
Change-Id: Ie8c6c0dd006f98527525e87d19b508bb8d39db69
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- Improve svm fifo handling of out-of-order segments
- Ensure tsval_recent is updated only if rcv_las falls withing the
segments's sequence space
- Avoid directly dropping old ACKs
- Improve debugging
Change-Id: I88dbe2394a0ad7eb389a4cc12d013a13733953aa
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: Ie43b8f1c91600d44dff67e9348fb2fe83efc60c2
Signed-off-by: flyingeagle23 <wang.hui56@zte.com.cn>
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Change-Id: Ic5467df16e870b49c49678b1dbb40f4a2390b3c9
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: Ib91db6e531231bdc52b0104673a912bee024872f
Signed-off-by: Florin Coras <fcoras@cisco.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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Among others:
- Moved app event queue to shared memory segment
- Use private memory segment for builtin apps
- Remove pid from svm fifo
- Protect session fifo (de)allocation
- Use fifo event for session disconnects
- Have session queue node poll in all wk threads
Change-Id: I89dbf7fdfebef12f5ef2b34ba3ef3c2c07f49ff2
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: Ifc07b3f90ac155c26c3a216e073b474b499ebd44
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: If3c01e318bcb740ca5b240c63f712e2167082a80
Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: Ie98ecb8944e4d27e943797948fad41ec074d6720
Signed-off-by: Florin Coras <fcoras@cisco.com>
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* Populated the trace struct that weren't used before
* Modified and created format functions to format tcp packets and
connections
* Completed the node definitions to add the format_trace function
* Filled the tracing parts with `vlib_add_trace' calls in each tcp node
function
For the nodes in tcp_input.c, there is a verbose trace and a non-verbose
trace. Each packet goes through tcp[4-6]-input which is traced with
`format_tcp_rx_trace', and the other nodes are traced with
`format_tcp_rx_trace_short'.
Change-Id: I4f2eed023f5973c14343132a33b06131cf063aa2
Signed-off-by: Pierre Pfister <ppfister@cisco.com>
Signed-off-by: Clement Durand <clement.durand@polytechnique.edu>
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Major refactoring of the session layer api
- Add attatch api for application binding to the the session layer
- Simplify listen/connect calls
- Update application CLI
- Add transport endpoint to accept callback
- Associate segment manager to application and allow for multiple
binds/connects per app
Additional:
- svm fifo cleanup
- add fifo free, format fns
- add fifo offset enqueue unit test
Change-Id: Id93a65047de61afc2bf3d58c9b544339c02065af
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Dave Barach <dave@barachs.net>
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The missing call to `vnet_session_enable_disable' would cause segfaults
because of an uninitialized session pointer. Just as in the builtin
server the session needs to be enabled for the client.
The `short_help' of the CLI command was also populated with the
arguments that are accepted in the parsing function
`test_tcp_clients_command_fn'.
Change-Id: I88c16efa80597dd19b406e8cf1c87aec1ec73573
Signed-off-by: Clement Durand <clement.durand@polytechnique.edu>
Signed-off-by: Pierre Pfister <ppfister@cisco.com>
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This patch deprecates stack-based thread identification,
Also removes requirement that thread stacks are adjacent.
Finally, possibly annoying for some folks, it renames
all occurences of cpu_index and cpu_number with thread
index. Using word "cpu" is misleading here as thread can
be migrated ti different CPU, and also it is not related
to linux cpu index.
Change-Id: I68cdaf661e701d2336fc953dcb9978d10a70f7c1
Signed-off-by: Damjan Marion <damarion@cisco.com>
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- added persist timer
- update rcv_las whenever sending an ack
- moved fifo size to its own cache line
- improved session and builtin client debugging
Change-Id: Ia649cf942cf0c061a713e8b67f0eb6974a6cd55b
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Dave Barach <dave@barachs.net>
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"test tcp client bytes 750000" deadlocks w/ Pr={1.0}
Change-Id: Ifa56b0de7812b9f27aa5bce2874b740c46ab30bd
Signed-off-by: Dave Barach <dbarach@cisco.com>
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- Added svm fifo flag for tracking fifo dequeue events (replaces event
length). Updated all code to switch to the new scheme.
- More session debugging
- Fix peek index wrap
- Add a trivial socket test client
- Fast retransmit/cc fixes
- tx and rx SACK fixes and unit testing
- SRTT computation fix
- remove dupack/ack burst filters
- improve ack rx
- improved segment rx
- builtin client test code
Change-Id: Ic4eb2d5ca446eb2260ccd3ccbcdaa73c64e7f4e1
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Dave Barach <dbarach@cisco.com>
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Change-Id: I4aa3e7e42fb81211de1aed07dc7befee87a1e18b
Signed-off-by: Damjan Marion <damarion@cisco.com>
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- event-logging support for tcp and session layer
- improvements to uri test code
- builtin_server on port 1234
- use the CLOSEWAIT timer when we rx FIN in FIN_WAIT_2 state
Change-Id: Ibc445f164b2086b20323bf89c77cffd3059f570f
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Dave Barach <dbarach@cisco.com>
Signed-off-by: Dave Barach <dave@barachs.net>
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- builtin test echo server
- fix SYN-ACK retransmit canceling
- avoid sending spurious ACK if in LAST_ACK
- improved client dummy test app
- renamed tx fifo dequeuing and sending functions to avoid confusion
- improved RST handling
Change-Id: Ia14aad3df319540dcf6e6a4e18a9f8d423a4b83b
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Dave Barach <dave@barachs.net>
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Change-Id: I73154179e78aeae5f879125237bce593d0978fae
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- Add CLI/API to enable session layer, by default it's disabled
- Improve rcv wnd computation
- Improvements to tx path
- URI code cleanup
- Builtin test tcp server
- Improve src port allocation
Change-Id: I2ace498e76a0771d4c31a8075cc14fe33d7dfa38
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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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