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authorFlorin Coras <fcoras@cisco.com>2017-10-02 00:18:51 -0700
committerDave Barach <openvpp@barachs.net>2017-10-10 20:42:50 +0000
commitcea194d8f973a2f2b5ef72d212533057174cc70a (patch)
tree6fdd2e8a929c62625d1ad35bfbec342129989aef /src/vnet/buffer.h
parent1f36a93d3d68f5ba6dcda08809394ce757cefd72 (diff)
session: add support for application namespacing
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>
Diffstat (limited to 'src/vnet/buffer.h')
-rw-r--r--src/vnet/buffer.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/src/vnet/buffer.h b/src/vnet/buffer.h
index e774a084436..7567b875248 100644
--- a/src/vnet/buffer.h
+++ b/src/vnet/buffer.h
@@ -126,8 +126,14 @@ typedef struct
protocol and ports. */
u32 flow_hash;
- /* next protocol */
- u32 save_protocol;
+ union
+ {
+ /* next protocol */
+ u32 save_protocol;
+
+ /* Hint for transport protocols */
+ u32 fib_index;
+ };
/* Rewrite length */
u32 save_rewrite_length;