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* MFC r362076Vincenzo Maffione2020-06-181-0/+18
| | | | | | | | | | | | netmap: introduce netmap_kring_on() This function returns NULL if the ring identified by queue id and direction is in netmap mode. Otherwise return the corresponding kring. Use this function to replace vtnet_netmap_queue_on(). Notes: svn path=/stable/12/; revision=362304
* MFC r357663Vincenzo Maffione2020-02-151-2/+0
| | | | | | | | | | | | | netmap: improve netmap(4) and vale(4) man pages Clean up obsolete sysctl descriptions and add missing ones. PR: 243838 Reviewed by: bcr Differential Revision: https://reviews.freebsd.org/D23546 Notes: svn path=/stable/12/; revision=357960
* MFC r356704Vincenzo Maffione2020-01-161-1/+0
| | | | | | | | | | | | | | | | netmap: disable passthrough with no hypervisor support The netmap passthrough subsystem requires proper support in the hypervisor. In particular, two PCI device ids (from the Red Hat PCI vendor id 0x1b36) need to be assigned to the two netmap virtual devices. We then disable these devices until the ids have not been assigned, in order to avoid conflicts with other virtual devices emulated by upstream QEMU. PR: 241774 Notes: svn path=/stable/12/; revision=356804
* MFC r351657Vincenzo Maffione2019-09-151-2/+1
| | | | | | | | | | | netmap: import changes from upstream (SHA 137f537eae513) - Rework option processing. - Use larger integers for memory size values in the memory management code. Notes: svn path=/stable/12/; revision=352355
* MFC r344253Vincenzo Maffione2019-02-251-0/+3
| | | | | | | | | | | | | | | | | netmap: don't schedule kqueue notify task when kqueue is not used This change adds a counter (kqueue_users) to keep track of how many kqueue users are referencing a given struct nm_selinfo. In this way, nm_os_selwakeup() can schedule the kevent notification task only when kqueue is actually being used. This is important to avoid wasting CPU in the common case where kqueue is not used. Reviewed by: Aleksandr Fedorov <aleksandr.fedorov@itglobal.com> Differential Revision: https://reviews.freebsd.org/D19177 Notes: svn path=/stable/12/; revision=344508
* MFC r343579Vincenzo Maffione2019-02-131-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | netmap: fix lock order reversal related to kqueue usage When using poll(), select() or kevent() on netmap file descriptors, netmap executes the equivalent of NIOCTXSYNC and NIOCRXSYNC commands, before collecting the events that are ready. In other words, the poll/kevent callback has side effects. This is done to avoid the overhead of two system call per iteration (e.g., poll() + ioctl(NIOC*XSYNC)). When the kqueue subsystem invokes the kqueue(9) f_event callback (netmap_knrw), it holds the lock of the struct knlist object associated to the netmap port (the lock is provided at initialization, by calling knlist_init_mtx). However, netmap_knrw() may need to wake up another netmap port (or even the same one), which means that it may need to call knote(). Since knote() needs the lock of the struct knlist object associated to the to-be-wake-up netmap port, it is possible to have a lock order reversal problem (AB/BA deadlock). This change prevents the deadlock by executing the knote() call in a per-selinfo taskqueue, where it is possible to hold a mutex. Reviewed by: aleksandr.fedorov_itglobal.com Differential Revision: https://reviews.freebsd.org/D18956 Notes: svn path=/stable/12/; revision=344090
* MFC r343772, r343867Vincenzo Maffione2019-02-121-12/+15
| | | | | | | | | | | | | | | | | netmap: refactor logging macros and pipes Changelist: - Replace ND, D and RD macros with nm_prdis, nm_prinf, nm_prerr and nm_prlim, to avoid possible naming conflicts. - Add netmap_krings_mode_commit() helper function and use that to reduce code duplication. - Refactor pipes control code to export some functions that can be reused by the veth driver (on Linux) and epair(4). - Add check to reject API requests with version less than 11. - Small code refactoring for the null adapter. Notes: svn path=/stable/12/; revision=344046
* MFC r343689Vincenzo Maffione2019-02-071-0/+9
| | | | | | | | | | 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. Notes: svn path=/stable/12/; revision=343865
* MFC r343346Vincenzo Maffione2019-02-061-50/+3
| | | | | | | | | | | | | | | | | | | | | | 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() Notes: svn path=/stable/12/; revision=343830
* MFC r343344Vincenzo Maffione2019-02-061-1/+0
| | | | | | | | | | | | | | | | | | | netmap: fix knote() argument to match the mutex state The nm_os_selwakeup function needs to call knote() to wake up kqueue(9) users. However, this function can be called from different code paths, with different lock requirements. This patch fixes the knote() call argument to match the relavant lock state. Also, comments have been updated to reflect current code. PR: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219846 Reported by: Aleksandr Fedorov <aleksandr.fedorov@itglobal.com> Reviewed by: markj MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D18876 Notes: svn path=/stable/12/; revision=343829
* MFC r342300Vincenzo Maffione2018-12-241-0/+1
| | | | | | | | | | | | netmap: move buf_size validation code to its own function This code validates the netmap buf_size against the interface MTU and maximum descriptor size, to make sure the values are consistent. Moving this functionality to its own function is needed because this function is also called by Linux-specific code. Notes: svn path=/stable/12/; revision=342391
* MFC r341516, r341589Vincenzo Maffione2018-12-111-131/+210
| | | | | | | | | | | | | | | | | | | | | | | | | | 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 Notes: svn path=/stable/12/; revision=341815
* MFC r339639:Vincenzo Maffione2018-10-301-98/+229
| | | | | | | | | | | | | | | | | | | | netmap: align codebase to the current upstream (sha 8374e1a7e6941) Changelist: - Move large parts of VALE code to a new file and header netmap_bdg.[ch]. This is useful to reuse the code within upcoming projects. - Improvements and bug fixes to pipes and monitors. - Introduce nm_os_onattach(), nm_os_onenter() and nm_os_onexit() to handle differences between FreeBSD and Linux. - Introduce some new helper functions to handle more host rings and fake rings (netmap_all_rings(), netmap_real_rings(), ...) - Added new sysctl to enable/disable hw checksum in emulated netmap mode. - nm_inject: add support for NS_MOREFRAG Approved by: re (gjb) Notes: svn path=/stable/12/; revision=339906
* netmap: pull fix for 32-bit support from upstreamMatt Macy2018-05-181-4/+4
| | | | | | | Approved by: sbruno Notes: svn path=/head/; revision=333778
* netmap: align codebase to the current upstream (commit id 3fb001303718146)Vincenzo Maffione2018-04-121-53/+102
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Changelist: - Turn tx_rings and rx_rings arrays into arrays of pointers to kring structs. This patch includes fixes for ixv, ixl, ix, re, cxgbe, iflib, vtnet and ptnet drivers to cope with the change. - Generalize the nm_config() callback to accept a struct containing many parameters. - Introduce NKR_FAKERING to support buffers sharing (used for netmap pipes) - Improved API for external VALE modules. - Various bug fixes and improvements to the netmap memory allocator, including support for externally (userspace) allocated memory. - Refactoring of netmap pipes: now linked rings share the same netmap buffers, with a separate set of kring pointers (rhead, rcur, rtail). Buffer swapping does not need to happen anymore. - Large refactoring of the control API towards an extensible solution; the goal is to allow the addition of more commands and extension of existing ones (with new options) without the need of hacks or the risk of running out of configuration space. A new NIOCCTRL ioctl has been added to handle all the requests of the new control API, which cover all the functionalities so far supported. The netmap API bumps from 11 to 12 with this patch. Full backward compatibility is provided for the old control command (NIOCREGIF), by means of a new netmap_legacy module. Many parts of the old netmap.h header has now been moved to netmap_legacy.h (included by netmap.h). Approved by: hrs (mentor) Notes: svn path=/head/; revision=332423
* netmap: align codebase to upstream version v11.4Vincenzo Maffione2018-04-091-92/+116
| | | | | | | | | | | | | | | | | | | Changelist: - remove unused nkr_slot_flags - new nm_intr adapter callback to enable/disable interrupts - remove unused sysctls and document the other sysctls - new infrastructure to support NS_MOREFRAG for NIC ports - support for external memory allocator (for now linux-only), including linux-specific changes in common headers - optimizations within netmap pipes datapath - improvements on VALE control API - new nm_parse() helper function in netmap_user.h - various bug fixes and code clean up Approved by: hrs (mentor) Notes: svn path=/head/; revision=332319
* netmap: align if_ptnet guest driver to the upstream code (commit 0e15788)Vincenzo Maffione2018-04-041-9/+12
| | | | | | | | | | | | | The change upgrades the driver to use the split Communication Status Block (CSB) format. In this way the variables written by the guest and read by the host are allocated in a different cacheline than the variables written by the host and read by the guest; this is needed to avoid cache thrashing. Approved by: hrs (mentor) Notes: svn path=/head/; revision=332047
* sys/dev: further adoption of SPDX licensing ID tags.Pedro F. Giffuni2017-11-271-1/+3
| | | | | | | | | | | | | | | Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Notes: svn path=/head/; revision=326255
* Update the current version of netmap to bring it in sync with the githubLuiz Otavio O Souza2017-06-121-29/+88
| | | | | | | | | | | | | | version. This commit contains mostly refactoring, a few fixes and minor added functionality. Submitted by: Vincenzo Maffione <v.maffione at gmail.com> Requested by: many Sponsored by: Rubicon Communications, LLC (Netgate) Notes: svn path=/head/; revision=319881
* Various fixes for ptnet/ptnetmap (passthrough of netmap ports). In detail:Luigi Rizzo2016-10-271-6/+5
| | | | | | | | | | | - use PCI_VENDOR and PCI_DEVICE ids from a publicly allocated range (thanks to RedHat) - export memory pool information through PCI registers - improve mechanism for configuring passthrough on different hypervisors Code is from Vincenzo Maffione as a follow up to his GSOC work. Notes: svn path=/head/; revision=308000
* remove stale and unused code from various filesLuigi Rizzo2016-10-181-3/+2
| | | | | | | | | | | | fix build on 32 bit platforms simplify logic in netmap_virt.h The commands (in net/netmap.h) to configure communication with the hypervisor may be revised soon. At the moment they are unused so this will not be a change of API. Notes: svn path=/head/; revision=307574
* Restore svn r306772 that was overwritten by netmap import at svn r307394Sean Bruno2016-10-181-0/+1
| | | | | | | | #include <sys/selinfo.h> should be here as all drivers that support netmap need to use this file regardless. Notes: svn path=/head/; revision=307569
* Import the current version of netmap, aligned with the one on github.Luigi Rizzo2016-10-161-122/+536
| | | | | | | | | | | | | | | | | | | This commit, long overdue, contains contributions in the last 2 years from Stefano Garzarella, Giuseppe Lettieri, Vincenzo Maffione, including: + fixes on monitor ports + the 'ptnet' virtual device driver, and ptnetmap backend, for high speed virtual passthrough on VMs (bhyve fixes in an upcoming commit) + improved emulated netmap mode + more robust error handling + removal of stale code + various fixes to code and documentation (some mixup between RX and TX parameters, and private and public variables) We also include an additional tool, nmreplay, which is functionally equivalent to tcpreplay but operating on netmap ports. Notes: svn path=/head/; revision=307394
* Move netmap selinfo.h in to sensible location.Sean Bruno2016-10-061-0/+1
| | | | | | | | | | | | | netmap_kern.h currently requires all drivers including it to include selinfo.h. Submitted by: mmacy@nextbsd.org Reviewed by: gnn MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D5334 Notes: svn path=/head/; revision=306772
* add a use count so the netmap module cannot be unloaded while in use.Luigi Rizzo2015-07-191-0/+1
| | | | Notes: svn path=/head/; revision=285699
* small documentation updateLuigi Rizzo2015-07-191-3/+4
| | | | Notes: svn path=/head/; revision=285695
* staticize functions only used in netmap.cLuigi Rizzo2015-07-101-38/+13
| | | | | | | | | | | | | (detected by jenkins run with gcc 4.9) Update documentation on the use of netmap_priv_d, rename the refcount and use the same structure in FreeBSD and linux No functional changes. Notes: svn path=/head/; revision=285359
* Sync netmap sources with the version in our private tree.Luigi Rizzo2015-07-101-148/+202
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit contains large contributions from Giuseppe Lettieri and Stefano Garzarella, is partly supported by grants from Verisign and Cisco, and brings in the following: - fix zerocopy monitor ports and introduce copying monitor ports (the latter are lower performance but give access to all traffic in parallel with the application) - exclusive open mode, useful to implement solutions that recover from crashes of the main netmap client (suggested by Patrick Kelsey) - revised memory allocator in preparation for the 'passthrough mode' (ptnetmap) recently presented at bsdcan. ptnetmap is described in S. Garzarella, G. Lettieri, L. Rizzo; Virtual device passthrough for high speed VM networking, ACM/IEEE ANCS 2015, Oakland (CA) May 2015 http://info.iet.unipi.it/~luigi/research.html - fix rx CRC handing on ixl - add module dependencies for netmap when building drivers as modules - minor simplifications to device-specific routines (*txsync, *rxsync) - general code cleanup (remove unused variables, introduce macros to access rings and remove duplicate code, Applications do not need to be recompiled, unless of course they want to use the new features (monitors and exclusive open). Those willing to try this code on stable/10 can just update the sys/dev/netmap/*, sys/net/netmap* with the version in HEAD and apply the small patches to individual device drivers. MFC after: 1 month Sponsored by: (partly) Verisign, Cisco Notes: svn path=/head/; revision=285349
* add support for private knote lock (reduces lock contention),Luigi Rizzo2014-11-131-1/+8
| | | | | | | | adapting OS_selrecord accordingly. Problem and fix suggested by adrian and jmg Notes: svn path=/head/; revision=274459
* in the Linux section, properly define the NMG_LOCK type.Luigi Rizzo2014-11-111-7/+21
| | | | | | | | Also import WITH_GENERIC in preparation to adding fine-grained options to disable specific netmap components. Notes: svn path=/head/; revision=274362
* fix a typoLuigi Rizzo2014-11-101-1/+1
| | | | Notes: svn path=/head/; revision=274355
* adapt the code to different freebsd versions.Luigi Rizzo2014-09-251-3/+6
| | | | | | | Not necessary to MFC Notes: svn path=/head/; revision=272110
* Provide pointer from struct ifnet to struct netmap_adapter,Gleb Smirnoff2014-08-311-1/+1
| | | | | | | instead of abusing spare field. Notes: svn path=/head/; revision=270874
* Change netmap's global lock to sx instead of a mutex.Navdeep Parhar2014-08-201-7/+7
| | | | | | | | Reviewed by: luigi@ MFC after: 1 day Notes: svn path=/head/; revision=270253
* Update to the current version of netmap.Luigi Rizzo2014-08-161-88/+328
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mostly bugfixes or features developed in the past 6 months, so this is a 10.1 candidate. Basically no user API changes (some bugfixes in sys/net/netmap_user.h). In detail: 1. netmap support for virtio-net, including in netmap mode. Under bhyve and with a netmap backend [2] we reach over 1Mpps with standard APIs (e.g. libpcap), and 5-8 Mpps in netmap mode. 2. (kernel) add support for multiple memory allocators, so we can better partition physical and virtual interfaces giving access to separate users. The most visible effect is one additional argument to the various kernel functions to compute buffer addresses. All netmap-supported drivers are affected, but changes are mechanical and trivial 3. (kernel) simplify the prototype for *txsync() and *rxsync() driver methods. All netmap drivers affected, changes mostly mechanical. 4. add support for netmap-monitor ports. Think of it as a mirroring port on a physical switch: a netmap monitor port replicates traffic present on the main port. Restrictions apply. Drive carefully. 5. if_lem.c: support for various paravirtualization features, experimental and disabled by default. Most of these are described in our ANCS'13 paper [1]. Paravirtualized support in netmap mode is new, and beats the numbers in the paper by a large factor (under qemu-kvm, we measured gues-host throughput up to 10-12 Mpps). A lot of refactoring and additional documentation in the files in sys/dev/netmap, but apart from #2 and #3 above, almost nothing of this stuff is visible to other kernel parts. Example programs in tools/tools/netmap have been updated with bugfixes and to support more of the existing features. This is meant to go into 10.1 so we plan an MFC before the Aug.22 deadline. A lot of this code has been contributed by my colleagues at UNIPI, including Giuseppe Lettieri, Vincenzo Maffione, Stefano Garzarella. MFC after: 3 days. Notes: svn path=/head/; revision=270063
* sync the code with the one in stable/10Luigi Rizzo2014-06-091-1/+3
| | | | | | | | (wrap the if_t compatibilty function into a __FreeBSD_version conditional block) Notes: svn path=/head/; revision=267283
* align comments with the ones in our development trunkLuigi Rizzo2014-06-061-7/+6
| | | | Notes: svn path=/head/; revision=267165
* whitespace change: remove trailing whitespaceLuigi Rizzo2014-06-051-2/+2
| | | | Notes: svn path=/head/; revision=267128
* Introduce a procedural interface to the ifnet structure. The newMarcel Moolenaar2014-06-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | interface allows the ifnet structure to be defined as an opaque type in NIC drivers. This then allows the ifnet structure to be changed without a need to change or recompile NIC drivers. Put differently, NIC drivers can be written and compiled once and be used with different network stack implementations, provided of course that those network stack implementations have an API and ABI compatible interface. This commit introduces the 'if_t' type to replace 'struct ifnet *' as the type of a network interface. The 'if_t' type is defined as 'void *' to enable the compiler to perform type conversion to 'struct ifnet *' and vice versa where needed and without warnings. The functions that implement the API are the only functions that need to have an explicit cast. The MII code has been converted to use the driver API to avoid unnecessary code churn. Code churn comes from having to work with both converted and unconverted drivers in correlation with having callback functions that take an interface. By converting the MII code first, the callback functions can be defined so that the compiler will perform the typecasts automatically. As soon as all drivers have been converted, the if_t type can be redefined as needed and the API functions can be fix to not need an explicit cast. The immediate benefactors of this change are: 1. Juniper Networks - The network stack implementation in Junos is entirely different from FreeBSD's one and this change allows Juniper to build "stock" NIC drivers that can be used in combination with both the FreeBSD and Junos stacks. 2. FreeBSD - This change opens the door towards changing ifnet and implementing new features and optimizations in the network stack without it requiring a change in the many NIC drivers FreeBSD has. Submitted by: Anuranjan Shukla <anshukla@juniper.net> Reviewed by: glebius@ Obtained from: Juniper Networks, Inc. Notes: svn path=/head/; revision=266974
* This new version of netmap brings you the following:Luigi Rizzo2014-02-151-22/+205
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - netmap pipes, providing bidirectional blocking I/O while moving 100+ Mpps between processes using shared memory channels (no mistake: over one hundred million. But mind you, i said *moving* not *processing*); - kqueue support (BHyVe needs it); - improved user library. Just the interface name lets you select a NIC, host port, VALE switch port, netmap pipe, and individual queues. The upcoming netmap-enabled libpcap will use this feature. - optional extra buffers associated to netmap ports, for applications that need to buffer data yet don't want to make copies. - segmentation offloading for the VALE switch, useful between VMs. and a number of bug fixes and performance improvements. My colleagues Giuseppe Lettieri and Vincenzo Maffione did a substantial amount of work on these features so we owe them a big thanks. There are some external repositories that can be of interest: https://code.google.com/p/netmap our public repository for netmap/VALE code, including linux versions and other stuff that does not belong here, such as python bindings. https://code.google.com/p/netmap-libpcap a clone of the libpcap repository with netmap support. With this any libpcap client has access to most netmap feature with no recompilation. E.g. tcpdump can filter packets at 10-15 Mpps. https://code.google.com/p/netmap-ipfw a userspace version of ipfw+dummynet which uses netmap to send/receive packets. Speed is up in the 7-10 Mpps range per core for simple rulesets. Both netmap-libpcap and netmap-ipfw will be merged upstream at some point, but while this happens it is useful to have access to them. And yes, this code will be merged soon. It is infinitely better than the version currently in 10 and 9. MFC after: 3 days Notes: svn path=/head/; revision=261909
* fix use after free when releasing a netmap adapter.Luigi Rizzo2014-01-071-2/+2
| | | | | | | Submitted by: Giuseppe Lettieri Notes: svn path=/head/; revision=260411
* It is 2014 and we have a new version of netmap.Luigi Rizzo2014-01-061-215/+273
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most relevant features: - netmap emulation on any NIC, even those without native netmap support. On the ixgbe we have measured about 4Mpps/core/queue in this mode, which is still a lot more than with sockets/bpf. - seamless interconnection of VALE switch, NICs and host stack. If you disable accelerations on your NIC (say em0) ifconfig em0 -txcsum -txcsum you can use the VALE switch to connect the NIC and the host stack: vale-ctl -h valeXX:em0 allowing sharing the NIC with other netmap clients. - THE USER API HAS SLIGHTLY CHANGED (head/cur/tail pointers instead of pointers/count as before). This was unavoidable to support, in the future, multiple threads operating on the same rings. Netmap clients require very small source code changes to compile again. On the plus side, the new API should be easier to understand and the internals are a lot simpler. The manual page has been updated extensively to reflect the current features and give some examples. This is the result of work of several people including Giuseppe Lettieri, Vincenzo Maffione, Michio Honda and myself, and has been financially supported by EU projects CHANGE and OPENLAB, from NetApp University Research Fund, NEC, and of course the Universita` di Pisa. Notes: svn path=/head/; revision=260368
* fix the build using __builtin_prefetch() instead of redefining prefetch()Luigi Rizzo2013-12-161-1/+0
| | | | Notes: svn path=/head/; revision=259487
* split netmap code according to functions:Luigi Rizzo2013-12-151-83/+513
| | | | | | | | | | | | | | - netmap.c base code - netmap_freebsd.c FreeBSD-specific code - netmap_generic.c emulate netmap over standard drivers - netmap_mbq.c simple mbuf tailq - netmap_mem2.c memory management - netmap_vale.c VALE switch simplify devce-specific code Notes: svn path=/head/; revision=259412
* update to the latest netmap snapshot.Luigi Rizzo2013-11-011-41/+230
| | | | | | | | | | | | | | | | | | | | | | | This includes the following: - use separate memory regions for VALE ports - locking fixes - some simplifications in the NIC-specific routines - performance improvements for the VALE switch - some new features in the pkt-gen test program - documentation updates There are small API changes that require programs to be recompiled (NETMAP_API has been bumped so you will detect old binaries at runtime). In particular: - struct netmap_slot now is 16 bytes to support an extra pointer, which may save one data copy when using VALE ports or VMs; - the struct netmap_if has two extra fields; MFC after: 3 days Notes: svn path=/head/; revision=257529
* Bring in a number of new features, mostly implemented by Michio Honda:Luigi Rizzo2013-05-301-2/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - the VALE switch now support up to 254 destinations per switch, unicast or broadcast (multicast goes to all ports). - we can attach hw interfaces and the host stack to a VALE switch, which means we will be able to use it more or less as a native bridge (minor tweaks still necessary). A 'vale-ctl' program is supplied in tools/tools/netmap to attach/detach ports the switch, and list current configuration. - the lookup function in the VALE switch can be reassigned to something else, similar to the pf hooks. This will enable attaching the firewall, or other processing functions (e.g. in-kernel openvswitch) directly on the netmap port. The internal API used by device drivers does not change. Userspace applications should be recompiled because we bump NETMAP_API as we now use some fields in the struct nmreq that were previously ignored -- otherwise, data structures are the same. Manpages will be committed separately. Notes: svn path=/head/; revision=251139
* Partial cleanup in preparation for upcoming changes:Luigi Rizzo2013-04-301-5/+17
| | | | | | | | | | | | | | | | - netmap_rx_irq()/netmap_tx_irq() can now be called by FreeBSD drivers hiding the logic for handling NIC interrupts in netmap mode. This also simplifies the case of NICs attached to VALE switches. Individual drivers will be updated with separate commits. - use the same refcount() API for FreeBSD and linux - plus some comments, typos and formatting fixes Portions contributed by Michio Honda Notes: svn path=/head/; revision=250107
* whitespace changes:Luigi Rizzo2013-04-291-3/+8
| | | | | | | remove $Id$ lines, and add blank lines around some #if / #elif /#endif Notes: svn path=/head/; revision=250052
* mostly whitespace changes:Luigi Rizzo2013-04-191-12/+4
| | | | | | | | - remove vestiges of the old memory allocator - clean up some comments Notes: svn path=/head/; revision=249659
* control some debugging messages with dev.netmap.verboseLuigi Rizzo2013-01-231-0/+3
| | | | | | | | add infrastracture to adapt to changes in number of queues and buffers at runtime Notes: svn path=/head/; revision=245835
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