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This adds a new API call to add session namespaces
It now takes a netns and a sock_name.
(1) If no netns is passed, sock_name will be used as
socket path. Defaulting to /run/vpp/app_ns_sockets/${ns_id}
(2) If a netns is passed, the sock_name has to be
abstract (i.e. start with '@'). It will default to
`@vpp/session/${ns_id}` and will be created in the provided
netns.
Type: feature
Change-Id: I90e9a8e5ecca2cabe7c05335663e33c8506dc9e7
Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
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App namespaces can now be associated to a linux ip netns, e.g.:
app ns add id <ns_id> secret <n> sw_if_index <n> netns <netns>
If session layer's app sock api is enabled, this triggers the creation
of an abstract listening socket in the netns that has been configured.
For the example above that would be @vpp/session/<ns_id>.
Consequently, vcl, or other apps attaching to vpp, can connect to said
abstract socket from an ip netns without the need to share unix domain
socket files. In particular, for vcl it's enough to set app-socket-api
to @vpp/session/<ns_id> in the conf file.
Type: feature
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I26fdc626a760a3f423c5b8be4251623f6e9cd73a
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Id43b0b6db2b42ee5801236df0bd7f7225e1e081c
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This is an af_unix socket alternative to the binary api. To enable it,
add use-app-socket-api under session stanza in startup.conf. When the
socket api is enabled, attachments through the binary api are disabled.
The socket api only works with memfd fifo segments, i.e., shm segments
are not supported.
Type: feature
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I55ffcee201d004846daeeec85c700c7e7a578d43
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Change-Id: I89d240753b3f3c5e984aa303a7c8fa35fa59bf7f
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Rename core data structures. This will break compatibility for out of
tree builtin apps.
- stream_session_t to session_t
- server_rx/tx_fifo to rx/tx_fifo
- stream_session.h to session_types.h
- update copyright
Change-Id: I414097c6e28bcbea866fbf13b8773c7db3f49325
Signed-off-by: Florin Coras <fcoras@cisco.com>
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This introduces 5-tuple lookup tables that may be used to implement
custom session layer actions at connection establishment time (session
layer perspective).
The rules table build mask-match-action lookup trees that for a given
5-tuple key return the action for the first longest match. If rules
overlap, ordering is established by tuple longest match with the
following descending priority: remote ip, local ip, remote port, local
port.
At this time, the only match action supported is to forward packets to
the application identified by the action.
Change-Id: Icbade6fac720fa3979820d50cd7d6137f8b635c3
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Applications are now provided the option to select the namespace they
are to be attached to and the scope of their attachement. Application
namespaces are meant to:
1) constrain the scope of communication through the network by
association with source interfaces and/or fib tables that provide the
source ips to be used and limit the scope of routing
2) provide a namespace local scope to session layer communication, as
opposed to the global scope provided by 1). That is, sessions can be
established without assistance from transport and network layers.
Albeit, zero/local-host ip addresses must still be provided in session
establishment messages due to existing application idiosyncrasies. This
mode of communication uses shared-memory fifos (cut-through sessions)
exclusively.
If applications request no namespace, they are assigned to the default
one, which at its turn uses the default fib. Applications can request
access to both local and global scopes for a namespace. If no scope is
specified, session layer defaults to the global one.
When a sw_if_index is provided for a namespace, zero-ip (INADDR_ANY)
binds are converted to binds to the requested interface.
Change-Id: Ia0f660bbf7eec7f89673f75b4821fc7c3d58e3d1
Signed-off-by: Florin Coras <fcoras@cisco.com>
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