From: Florin Coras <fcoras@cisco.com>
Date: Thu, 2 Aug 2018 17:45:44 +0000 (-0700)
Subject: vcl: support for eventfd mq signaling
X-Git-Tag: v18.10-rc1~455
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=993683150202254c6ba8dd43e087a7229edd5d4c;hp=993683150202254c6ba8dd43e087a7229edd5d4c;p=vpp.git

vcl: support for eventfd mq signaling

- support eventfd based mq signaling. Based on configuration, vcl
epoll/select can use either condvars or epoll on mq eventfds.
- add vcl support for memfd segments
- vpp explicitly registers cut-through segments with apps/vcl
- if using eventfd, make ldp allow one call to libc_epoll_create. Needed
for the message queue epfd
- update svm_queue_t to allow blocking calls with eventfd signaling.

Change-Id: I064151ac370bbe29bb16c968bf4e3659c8286bea
Signed-off-by: Florin Coras <fcoras@cisco.com>
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