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* netmap: ixl: add CRC to outbound framesVincenzo Maffione2020-03-251-1/+2
| | | | | | | | | | | With this change, ixl netmap_txsync instructs the NIC to add CRC to transmitted frames. Submitted by: Alexandre Snarskii <snar@snar.spb.ru> Reviewed by: vmaffione Notes: svn path=/stable/11/; revision=359310
* MFC r357663Vincenzo Maffione2020-02-151-1/+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/11/; revision=357961
* MFC r357159Vincenzo Maffione2020-01-291-1/+2
| | | | | | | netmap_mem_unmap: fix NULL pointer dereference Notes: svn path=/stable/11/; revision=357278
* 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/11/; revision=356805
* MFC r351488Vincenzo Maffione2019-09-031-1498/+0
| | | | | | | | | | | netmap: remove obsolete file The netmap_pt.c module has become obsolete after the refactoring that added netmap_kloop.c. Remove it and unlink it from the build system. Notes: svn path=/stable/11/; revision=351772
* MFC r349581Vincenzo Maffione2019-07-151-0/+3
| | | | | | | | | | | | | | | | netmap: fix two panics with emulated adapter This patch fixes 2 panics. The first one is due to the current VNET not being set in the emulated adapter transmission path. The second one is caused by the M_PKTHDR flag not being set when preallocated mbufs are recycled in the transmit path. Submitted by: aleksandr.fedorov@itglobal.com Reviewed by: vmaffione Differential Revision: https://reviews.freebsd.org/D20824 Notes: svn path=/stable/11/; revision=350010
* MFC r349966Vincenzo Maffione2019-07-151-1/+2
| | | | | | | | | | | | netmap: fix bug introduced by r349752 r349752 introduced a NULL pointer reference bug in the emulated netmap code. Reported by: lwhsu Notes: svn path=/stable/11/; revision=350007
* MFC r349752Vincenzo Maffione2019-07-111-2/+2
| | | | | | | | | | | | | | netmap: fix kernel pointer printing in netmap_generic.c Print the adapter name rather than the address of the adapter to avoid kernel address leakage. PR: Bug 238642 Submitted by: Fuqian Huang <huangfq.daxian@gmail.com> Reviewed by: vmaffione Notes: svn path=/stable/11/; revision=349922
* MFC r339683:Ravi Pokala2019-03-291-1/+0
| | | | | | | | | | | | | Remove redundant redeclaration of netmap_vp_reg(). This should unbreak sparc64 and powerpc LINT builds. -- While this does fix that error, powerpc.LINT, powerpc.LINT64, and -- sparc64.LINT are broken in stable/11 for other reasons. --rpokala Sponsored by: Panasas Notes: svn path=/stable/11/; revision=345668
* MFC r344510Vincenzo Maffione2019-02-281-1/+0
| | | | | | | | | | | netmap: remove redundant call to nm_set_native_flags() This redundant call was introduced by mistake in r343772. Sponsored by: Sunny Valley Networks Notes: svn path=/stable/11/; revision=344658
* MFC r343579, r344253Vincenzo Maffione2019-02-253-29/+93
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. The change also 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_itglobal.com Differential Revision: https://reviews.freebsd.org/D18956 Notes: svn path=/stable/11/; revision=344509
* MFC r343772, r343867Vincenzo Maffione2019-02-1213-430/+391
| | | | | | | | | | | | | | | | | 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/11/; revision=344047
* MFC r343689Vincenzo Maffione2019-02-073-102/+323
| | | | | | | | | | 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/11/; revision=343866
* MFC r343549Vincenzo Maffione2019-02-063-54/+66
| | | | | | | | | | | 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. Notes: svn path=/stable/11/; revision=343834
* MFC r343346Vincenzo Maffione2019-02-062-101/+98
| | | | | | | | | | | | | | | | | | | | | | 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(). - 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/11/; revision=343832
* MFC r343344Vincenzo Maffione2019-02-063-50/+41
| | | | | | | | | | | | | | | | | | 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 Differential Revision: https://reviews.freebsd.org/D18876 Notes: svn path=/stable/11/; revision=343831
* netmap: small cleanup on em, lem, igb, ixgbeVincenzo Maffione2019-02-054-12/+12
| | | | | | | Replace D, ND and RD macros with the corresponding nm_pr* ones. Notes: svn path=/stable/11/; revision=343771
* ixl: remove unnecessary limitations related to netmapVincenzo Maffione2019-01-291-8/+6
| | | | | | | | | | | | | | Netmap supports the case where TX rings and RX rings have different size. Remove unnecessary limitations related to netmap support, making the code simpler. Also, check that the value of the hw head index written back from the NIC is valid. Reviewed by: erj Differential Revision: https://reviews.freebsd.org/D18984 Notes: svn path=/stable/11/; revision=343559
* MFC r343413Vincenzo Maffione2019-01-281-1/+10
| | | | | | | | | | | netmap: fix crash with monitors and VALE ports Crash report described here: https://github.com/luigirizzo/netmap/issues/583 Fixed by providing dummy sync callback in case it is missing. Notes: svn path=/stable/11/; revision=343522
* MFC r342368, r342369Vincenzo Maffione2018-12-311-12/+22
| | | | | | | | | | | | | | | | | | | | | netmap: fix bug in netmap_poll() optimization The bug was introduced by r339639, although it is present in the upstream netmap code since 2015. It is due to resetting the want_rx variable to POLLIN, rather than resetting it to POLLIN|POLLRDNORM. It only affects select(), which uses POLLRDNORM. poll() is not affected, because it uses POLLIN. Also, it only affects FreeBSD, because Linux skips the optimization implemented by the piece of code where the bug occurs. To check if txsync can be skipped, it is necessary to look for unseen TX space. However, this means comparing ring->cur against ring->tail, rather than ring->head against ring->tail (like nm_ring_empty() does). Sponsored by: Sunny Valley Networks Notes: svn path=/stable/11/; revision=342648
* MFC r342300Vincenzo Maffione2018-12-242-42/+53
| | | | | | | | | | | | 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/11/; revision=342395
* MFC r342299Vincenzo Maffione2018-12-241-1/+3
| | | | | | | netmap: pipes: make sure both ends use the same number of slots Notes: svn path=/stable/11/; revision=342394
* MFC r341992Vincenzo Maffione2018-12-151-0/+2
| | | | | | | | | netmap: fix warning in netmap_kloop.c Reported by: markj Notes: svn path=/stable/11/; revision=342131
* MFC r341624Vincenzo Maffione2018-12-131-0/+5
| | | | | | | | | | | | | | | | netmap: netmap_transmit should honor bpf packet tap hook This allows tcpdump to capture outbound kernel packets while in netmap mode Submitted by: Marc de la Gueronniere <mdelagueronniere@verisign.com> Reviewed by: vmaffione MFC after: 1 week Sponsored by: Verisign, Inc. Differential Revision: https://reviews.freebsd.org/D17896 Notes: svn path=/stable/11/; revision=342034
* MFC r341516, r341589Vincenzo Maffione2018-12-1315-835/+2263
| | | | | | | | | | | | | | | | | | | | | | | | | | 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/11/; revision=342033
* MFC r341144Vincenzo Maffione2018-12-041-0/+1
| | | | | | | | | | | | | | netmap: set IFCAP_NETMAP in if_capabilities Revision r307394 removed (by mistake) the code that sets IFCAP_NETMAP in if_capabilities on netmap_attach. This patch reverts this change. Reviewed by: np Approved by: gnn (mentor) Differential Revision: https://reviews.freebsd.org/D17987 Notes: svn path=/stable/11/; revision=341480
* MFC r340436Vincenzo Maffione2018-12-041-207/+315
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | vtnet: fix netmap support netmap(4) support for vtnet(4) was incomplete and had multiple bugs. This commit fixes those bugs to bring netmap on vtnet in a functional state. Changelist: - handle errors returned by virtqueue_enqueue() properly (they were previously ignored) - make sure netmap XOR rest of the kernel access each virtqueue. - compute the number of netmap slots for TX and RX separately, according to whether indirect descriptors are used or not for a given virtqueue. - make sure sglist are freed according to their type (mbufs or netmap buffers) - add support for mulitiqueue and netmap host (aka sw) rings. - intercept VQ interrupts directly instead of intercepting them in txq_eof and rxq_eof. This simplifies the code and makes it easier to make sure taskqueues are not running for a VQ while it is in netmap mode. - implement vntet_netmap_config() to cope with changes in the number of queues. Reviewed by: bryanv Approved by: gnn (mentor) Sponsored by: Sunny Valley Networks Differential Revision: https://reviews.freebsd.org/D17916 Notes: svn path=/stable/11/; revision=341478
* MFC r339639Vincenzo Maffione2018-12-0423-4116/+11101
| | | | | | | | | | | | | | | | | | | | | 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: gnn (mentor) Differential Revision: https://reviews.freebsd.org/D17364 Notes: svn path=/stable/11/; revision=341477
* MFC r337812,r337814,r337820,r341068:David Bright2018-11-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix several memory leaks (r337812 & r337814). The libkqueue tests have several places that leak memory by using an idiom like: puts(kevent_to_str(kevp)); Rework to save the pointer returned from kevent_to_str() and then free() it after it has been used. r337812 also fixed a bug in the netmap kevent code. The inclusion of that fix was an oversight that I didn't notice until this MFC. Reference the code review and PR here in the MFC for completeness. r337820 & r341068 were white-space only changes as a follow-up to r337812 & r337814: After r337820, which "corrected" some spaces-instead-of-tab whitespace issues in the libkqueue tests, jmg@ pointed out that these files were originally space-based, not tab-spaced, and so the correction should have been to get rid of the tabs that had been introduced in previous changes, not the spaces. This change does that. This is a whitespace only change; no functional change is intended. PR: 206053 Differential Revision: https://reviews.freebsd.org/D16531 Sponsored by: Dell EMC Isilon Notes: svn path=/stable/11/; revision=341275
* Revert r330897:Eitan Adler2018-03-2916-48/+16
| | | | | | | | | | | | | | | | | | | | This was intended to be a non-functional change. It wasn't. The commit message was thus wrong. In addition it broke arm, and merged crypto related code. Revert with prejudice. This revert skips files touched in r316370 since that commit was since MFCed. This revert also skips files that require $FreeBSD$ property changes. Thank you to those who helped me get out of this mess including but not limited to gonzo, kevans, rgrimes. Requested by: gjb (re) Notes: svn path=/stable/11/; revision=331722
* Partial merge of the SPDX changesEitan Adler2018-03-1416-16/+48
| | | | | | | | | | These changes are incomplete but are making it difficult to determine what other changes can/should be merged. No objections from: pfg Notes: svn path=/stable/11/; revision=330897
* Fix a crash in netmap when using the emulated mode.Luiz Otavio O Souza2017-01-253-109/+52
| | | | | | | | | | | This is a direct commit to stable/11 as the -head version was already fixed by a recent import of a new netmap version. Submitted by: Vincenzo Maffione <v.maffione@gmail.com> Sponsored by: Rubicon Communications, LLC (Netgate) Notes: svn path=/stable/11/; revision=312783
* MFC r308038:Sean Bruno2016-10-311-1/+1
| | | | | | | | | | The buffer address is always overwritten in the extended descriptor format, we have to refresh it ... always. This fixes problems reported in NetMap with em(4) devices after conversion to extended descriptor format in svn r293331. Notes: svn path=/stable/11/; revision=308131
* Don't repeat the the word 'the'Eitan Adler2016-05-171-1/+1
| | | | | | | | | | (one manual change to fix grammar) Confirmed With: db Approved by: secteam (not really, but this is a comment typo fix) Notes: svn path=/head/; revision=300050
* sys/dev: minor spelling fixes.Pedro F. Giffuni2016-05-033-5/+5
| | | | | | | Most affect comments, very few have user-visible effects. Notes: svn path=/head/; revision=298955
* Plug leak in m_unshare.Navdeep Parhar2016-03-261-1/+2
| | | | | | | | | | | | | | | | | | | | | | | m_unshare passes on the source mbuf's flags as-is to m_getcl and this results in a leak if the flags include M_NOFREE. The fix is to clear the bits not listed in M_COPYALL before calling m_getcl. M_RDONLY should probably be filtered out too but that's outside the scope of this fix. Add assertions in the zone_mbuf and zone_pack ctors to catch similar bugs. Update netmap_get_mbuf to not pass M_NOFREE to m_getcl. It's not clear what the original code was trying to do but it's likely incorrect. Updated code is no different functionally but it avoids the newly added assertions. Reviewed by: gnn@ Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D5698 Notes: svn path=/head/; revision=297298
* These files were getting sys/malloc.h and vm/uma.h with header pollutionGleb Smirnoff2016-02-011-0/+1
| | | | | | | via sys/mbuf.h Notes: svn path=/head/; revision=295126
* Switch em(4) to the extended RX descriptor format. This matches theSean Bruno2016-01-071-8/+8
| | | | | | | | | | | | | | | | | | | | | e1000/e1000e split in linux. Split rxbuffer and txbuffer apart to support the new RX descriptor format structures. Move rxbuffer manipulation to em_setup_rxdesc() to unify the new behavior changes. Add a RSSKEYLEN macro for help in generating the RSSKEY data structures in the card. Change em_receive_checksum() to process the new rxdescriptor format status bit. MFC after: 2 weeks Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D3447 Notes: svn path=/head/; revision=293331
* Fix typo (s/harware/hardware/)Kevin Lo2015-12-251-1/+1
| | | | Notes: svn path=/head/; revision=292730
* Don't call enable_all_rings if the adapter has been freed.Adrian Chadd2015-09-071-2/+5
| | | | | | | | | | | This is a subtle use-after-free race that results in some very undesirable hang behaviour. Reviewed by: pkelsey Obtained from: Kip Macy, NextBSD (https://github.com/NextBSD/NextBSD/commit/91a9bd1dbb33dafb41684d054e59d73976de9654) Notes: svn path=/head/; revision=287543
* add a use count so the netmap module cannot be unloaded while in use.Luigi Rizzo2015-07-193-2/+18
| | | | Notes: svn path=/head/; revision=285699
* properly destroy persistent vale portsLuigi Rizzo2015-07-191-12/+6
| | | | Notes: svn path=/head/; revision=285698
* do not free NULL if pipe allocation failsLuigi Rizzo2015-07-191-1/+3
| | | | Notes: svn path=/head/; revision=285697
* release a reference when stopping a monitorLuigi Rizzo2015-07-191-0/+1
| | | | Notes: svn path=/head/; revision=285696
* small documentation updateLuigi Rizzo2015-07-191-3/+4
| | | | Notes: svn path=/head/; revision=285695
* Add netmap support for ixgbe SRIOV VFs (that is, to if_ixv).Patrick Kelsey2015-07-151-13/+14
| | | | | | | | | | Differential Revision: https://reviews.freebsd.org/D2923 Reviewed by: erj, gnn Approved by: jmallett (mentor) Sponsored by: Norse Corp, Inc. Notes: svn path=/head/; revision=285592
* set the refcount for the structure (dropped by mistake in the last commit).Luigi Rizzo2015-07-131-0/+1
| | | | Notes: svn path=/head/; revision=285445
* staticize functions only used in netmap.cLuigi Rizzo2015-07-104-69/+38
| | | | | | | | | | | | | (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 Rizzo2015-07-1016-1392/+1884
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Change EM_MULTIQUEUE to a real kernconf entry and enable support forSean Bruno2015-06-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | up to 2 rx/tx queues for the 82574. Program the 82574 to enable 5 msix vectors, assign 1 to each rx queue, 1 to each tx queue and 1 to the link handler. Inspired by DragonFlyBSD, enable some RSS logic for handling tx queue handling/processing. Move multiqueue handler functions so that they line up better in a diff review to if_igb.c Always enqueue tx work to be done in em_mq_start, if unable to acquire the TX lock, then this will be processed in the background later by the taskqueue. Remove mbuf argument from em_start_mq_locked() as the work is always enqueued. (stolen from igb) Setup TARC, TXDCTL and RXDCTL registers for better performance and stability in multiqueue and singlequeue implementations. Handle Intel errata 3 and generic multiqueue behavior with the initialization of TARC(0) and TARC(1) Bind interrupt threads to cpus in order. (stolen from igb) Add 2 new DDB functions, one to display the queue(s) and their settings and one to reset the adapter. Primarily used for debugging. In the multiqueue configuration, bump RXD and TXD ring size to max for the adapter (4096). Setup an RDTR of 64 and an RADV of 128 in multiqueue configuration to cut down on the number of interrupts. RADV was arbitrarily set to 2x RDTR and can be adjusted as needed. Cleanup the display in top a bit to make it clearer where the taskqueue threads are running and what they should be doing. Ensure that both queues are processed by em_local_timer() by writing them both to the IMS register to generate soft interrupts. Ensure that an soft interrupt is generated when em_msix_link() is run so that any races between assertion of the link/status interrupt and a rx/tx interrupt are handled. Document existing tuneables: hw.em.eee_setting, hw.em.msix, hw.em.smart_pwr_down, hw.em.sbp Document use of hw.em.num_queues and the new kernel option EM_MULTIQUEUE Thanks to Intel for their continued support of FreeBSD. Reviewed by: erj jfv hiren gnn wblock Obtained from: Intel Corporation MFC after: 2 weeks Relnotes: Yes Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D1994 Notes: svn path=/head/; revision=283959
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