v2->v3:
- Add pre-check for each APIs.
- Remove the limitation of 8 secondary processes by: discard original
register/unregister mechanism of secondary process, instead, primary
discoveries secondary processes by looking up the folder for regex match.
- Previous implementation use two sockets for msg and request, this version
just uses one socket. And receive all kinds of messages in mp thread.
v1->v2: (Address comments from Anatoly and Konstantin)
- Use datagram unix socket to supersede stream unix socket + epoll.
- Change the secondary add/del mechanism as now we use connection-less
channel.
- Add mp_mutex_action to sync action register/unregister/reference.
- Limit max length of action name to 64B.
- New APIs for synchronous communication: rte_eal_mp_request/rte_eal_mp_reply.
- Formalize the errno handle.
- Some other small issues.
This patchset adds a generic channel for multi-process (primary/secondary)
communication.
Patch 1: addess the purpose and howto;
Patch 2: add a syncrhonous way for the requests which need a immediate response.
Patch 3: Rework vfio to use this generic communication channel.
Jianfeng Tan (3):
eal: add channel for multi-process communication
eal: add synchronous multi-process communication
vfio: use the generic multi-process channel
doc/guides/rel_notes/release_18_02.rst | 15 +
lib/librte_eal/common/eal_common_proc.c | 593 ++++++++++++++++++++++++-
lib/librte_eal/common/eal_filesystem.h | 17 +
lib/librte_eal/common/eal_private.h | 10 +
lib/librte_eal/common/include/rte_eal.h | 131 ++++++
lib/librte_eal/linuxapp/eal/eal.c | 22 +-
lib/librte_eal/linuxapp/eal/eal_vfio.c | 172 +++----
lib/librte_eal/linuxapp/eal/eal_vfio.h | 15 +-
lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c | 408 +++--------------
lib/librte_eal/rte_eal_version.map | 6 +
10 files changed, 915 insertions(+), 474 deletions(-)
--
2.7.4
