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2017-03-22vhost: support interrupt modeSteven1-5/+8
vhost currently supports only polling mode. This patch is to add interrupt mode. When the interface is configured for interrupt mode, our input node does not get called unless there is a packet in the vring. If a particular CPU has one interface configured for polling mode and another in interrupt, the input node is set to polling for that CPU. This diffs also includes two crashes in vlib's dispatch_node. One is included in https://gerrit.fd.io/r/#/c/5516. The other crash is in the ASSERT. The ASSERT can become true when the caller of dispatch_node is in a loop. The first call converted the node to polling. The second call thereafter will hit the ASSERT. Change-Id: If17b6d48b20d7d8605c6a161459828637173cd32 Signed-off-by: Steven <sluong@cisco.com>
2017-03-17vlib: fix potential crash in dispatch_node ELOG_DATA callSteven1-2/+11
dispatch_node may be invoked from vlib main or worker threads. The call to ELOG_DATA in dispatch_node passes the parameter &vm->elog_main. It works fine when dispatch_node is invoked from the main thread. It does bad thing when it is invoked from the worker thread. While we are at it, make two additional enhancements to the same area. 1. Use ELOG_TRACK_DATA instead of ELOG_DATA to enhance g2 viewer presentation. 2. Since ELOG_DATA is in the data path, it could get very chatty. Make the call to ELOG_TRACK_DATA conditional compile. Change-Id: I80ca0eea10bc1e5d0d5549f9844dd9a34dbb65a2 Signed-off-by: Steven <sluong@cisco.com>
2017-03-14vlib: poll pre_input nodes only on main threadDamjan Marion1-6/+7
Change-Id: I61464fd1610a9754693f31edd72f9fa1b6926511 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-03-10vlib: deduplicatee code in main and worker main loopDamjan Marion1-67/+109
Change-Id: Id18d59c9442602633a6310b2001a95bce8b6b232 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-01-14vlib: add buffer and thread callbacksDamjan Marion1-3/+4
Change-Id: I8e2e8f94a884ab2f9909d0c83ba00edd38cdab77 Signed-off-by: Damjan Marion <damarion@cisco.com>
2016-12-28Reorganize source tree to use single autotools instanceDamjan Marion1-0/+1703
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>