FreeBSD source tree http://cgit.freebsd.org/src/atom?h=release%2F12.2.0 2019-09-15T14:26:19Z 2019-09-15T14:26:19Z Vincenzo Maffione vmaffione@FreeBSD.org 2019-09-15T14:26:19Z urn:sha1:3ca5cfaae880ab54469719c3c9fb224e75ac5005 netmap: import changes from upstream (SHA 137f537eae513) - Rework option processing. - Use larger integers for memory size values in the memory management code. 2019-02-07T10:44:03Z Vincenzo Maffione vmaffione@FreeBSD.org 2019-02-07T10:44:03Z urn:sha1:fdde8f329714ba111f495e1c3754bb157d41c8a9 netmap: upgrade sync-kloop support Add SYNC_KLOOP_MODE option, and add support for direct mode, where application executes the TXSYNC and RXSYNC in the context of the ioeventfd wake up callback. 2019-02-06T09:59:20Z Vincenzo Maffione vmaffione@FreeBSD.org 2019-02-06T09:59:20Z urn:sha1:e2e0ef76356f07d4b477b30a87697134b8ad0fd1 netmap: add notifications on kloop stop On sync-kloop stop, send a wake-up signal to the kloop, so that waiting for the timeout is not needed. Also, improve logging in netmap_freebsd.c. 2019-02-06T09:23:39Z Vincenzo Maffione vmaffione@FreeBSD.org 2019-02-06T09:23:39Z urn:sha1:93b1d6a0718beee11a62a7594cdaf637f8daffa9 netmap: improvements to the netmap kloop (CSB mode) Changelist: - Add the proper memory barriers in the kloop ring processing functions. - Fix memory barriers usage in the user helpers (nm_sync_kloop_appl_write, nm_sync_kloop_appl_read). - Fix nm_kr_txempty() helper to look at rhead rather than rcur. This is important since the kloop can read a value of rcur which is ahead of the value of rhead (see explanation in nm_sync_kloop_appl_write) - Remove obsolete ptnetmap_guest_write_kring_csb() and ptnet_guest_read_kring_csb(), and update if_ptnet(4) to use those. - Prepare in advance the arguments for netmap_sync_kloop_[tr]x_ring(), to make the kloop faster. - Provide kernel and user implementation for nm_ldld_barrier() and nm_ldst_barrier() 2018-12-15T18:05:05Z Vincenzo Maffione vmaffione@FreeBSD.org 2018-12-15T18:05:05Z urn:sha1:639c36f03d8481f306c47ff457b06eb41be407af netmap: fix warning in netmap_kloop.c Reported by: markj 2018-12-11T11:31:13Z Vincenzo Maffione vmaffione@FreeBSD.org 2018-12-11T11:31:13Z urn:sha1:b321acab165f6ab6e821be03895eb40e5bff6fe7 netmap: align codebase to the current upstream (760279cfb2730a585) Changelist: - Replace netmap passthrough host support with a more general mechanism to call TXSYNC/RXSYNC from an in-kernel event-loop. No kernel threads are used to use this feature: the application is required to spawn a thread (or a process) and issue a SYNC_KLOOP_START (NIOCCTRL) command in the thread body. The kernel loop is executed by the ioctl implementation, which returns to userspace only when a different thread calls SYNC_KLOOP_STOP or the netmap file descriptor is closed. - Update the if_ptnet driver to cope with the new data structures, and prune all the obsolete ptnetmap code. - Add support for "null" netmap ports, useful to allocate netmap_if, netmap_ring and netmap buffers to be used by specialized applications (e.g. hypervisors). TXSYNC/RXSYNC on these ports have no effect. - Various fixes and code refactoring. Sponsored by: Sunny Valley Networks Differential Revision: https://reviews.freebsd.org/D18015