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* Direct commit to stable/11 to correctly setting the EIAC and IMSsbruno2017-06-191-1/+1
| | | | | | | | | | | registers to the same values when processing interrupts. This reverts a change made in r286831 that was not fully reverted in r311979 This resolves PR https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211219 PR: 211219 Submitted by: Franco Fitchner <franco@opnsense.org> Approved by: re (marius)
* Direct commit of fixes to stable/11, resolving PCI passthrough and ↵sbruno2017-04-053-5/+6
| | | | | | | | | | | initialization issues when trying to passthrough a i340 (igb) to VMware. While here, cleanup some bits of em(4) to DTRT as well. PR: 218113 Submitted by: Kaho Toshikazu <kaho@elam.kais.kyoto-u.ac.jp>
* Disable the driver managed queue for igb(4) when the legacy transmitloos2017-02-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | interface is used. The legacy API (IGB_LEGACY_TX) is enabled when ALTQ is built into kernel. As noted in altq(9), it is responsibility of the caller to protect this queue against concurrent access and, in the igb case, the interface send queue is protected by tx queue mutex. This obviously cannot protect the driver managed queue against concurrent access from different tx queues and leads to numerous and quite strange panic traces (usually shown as packets disappearing into thin air). Improving the locking to cope with this means serialize all access to this (single) queue and produces no gain, it actually affects the performance quite noticeabily. The driver managed queue is already disabled when an ALTQ queue discipline is set on interface (in altq_enable()), because the driver managed queue can interfere with ALTQ timing (whence the reports that setting an ALTQ queue discipline on interface also fixes the issue). Disabling this additional queue keeps the ability to use if_start() to send packets to individual NIC queues while it simply eliminate the race. This is a direct commit to stable/11 as -head driver does not support ALTQ anymore. PR: 213257 PR: 212413 Discussed with: sbruno Tested by: Konstantin Kormashev <konstantin@netgate.com> Obtained from: pfSense Sponsored by: Rubicon Communications, LLC (Netgate)
* MFC: r311979marius2017-02-221-1/+1
| | | | | Reset the EIAC register to include the LINK status bit and restore link up/down notifications.
* MFC r307649:kib2016-11-021-4/+15
| | | | | Partial workaround for Intel PCI adapters reading past the end of the host-programmed DMA regions.
* MFC r304149sbruno2016-08-186-14/+45
| | | | | | e1000: Add support for Kaby Lake IDs Fixup some errors when transitioning to/from low power states.
* MFC r303638sbruno2016-08-021-0/+1
| | | | | | Unbreak NETMAP usage with em(4) broken in r293331. Approved by: re (gjb)
* Do not initialize the adapter on MTU change when adapter status is down.sbruno2016-07-073-3/+6
| | | | | | | | | | | | This fixes long-standing problems when changing settings of the adapter. Discussed in: https://lists.freebsd.org/pipermail/freebsd-net/2016-June/045509.html Submitted by: arnaud.ysmal@stormshield.eu Reviewed by: erj@freebsd.org Approved by: re (gjb) Differential Revision: https://reviews.freebsd.org/D7030
* net: Use M_HASHTYPE_OPAQUE_HASH if the mbuf flowid has hash propertiessephe2016-06-071-1/+1
| | | | | | Reviewed by: hps, erj, tuexen Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D6688
* Don't repeat the the word 'the'eadler2016-05-172-2/+2
| | | | | | | (one manual change to fix grammar) Confirmed With: db Approved by: secteam (not really, but this is a comment typo fix)
* dev/e1000,ixgbe: minor spelling fixes.pfg2016-05-065-11/+11
| | | | | | No functional change. Differential Revision: https://reviews.freebsd.org/D6177
* Since igb_detach() cleans up all the data structures that will besbruno2016-05-061-1/+2
| | | | | | | | | free'd by the functions following its call, we can simply return instead of crashing and burning in the event of igb_detach() failing. PR: 197139 Submitted by: rupavath@juniper.net MFC after: 2 weeks
* If ALTQ is defined in the kern conf, switch to Legacy Mode.sbruno2016-05-061-0/+4
| | | | | | PR: 208409 Submitted by: freebsd@mcwest.org MFC after: 2 weeks
* Correct possible underflow conditions when checking for available spacesbruno2016-04-183-3/+3
| | | | | | | | | in the tx h/w ring buffer. Reviewed by: gnn jeb.j.cramer@intel.com MFC after: 1 week Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D5918
* tcp/lro: Use tcp_lro_flush_all in device drivers to avoid code duplicationsephe2016-04-011-5/+1
| | | | | | | | | And factor out tcp_lro_rx_done, which deduplicates the same logic with netinet/tcp_lro.c Reviewed by: gallatin (1st version), hps, zbb, np, Dexuan Cui <decui microsoft com> Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D5725
* Support checksum offloading for TCP/IPV6 and UDP/IPV6.tuexen2016-03-222-7/+53
| | | | | | | | | Support SCTP checksum offloading for SCTP/IPV6. Support SCTP checksum offloading on all controllers except 82575. Reviewed by: sbruno@, erj@ MFC after: 4 weeks Differential Revision: D5193
* The register read/write mphy functions have misleading whitespace aroundsbruno2016-03-041-8/+6
| | | | | | | | | | | | the locked check. This cleanup merely preserves the existing functionality while improving the ready check. Submitted by: Jim Thompson Reviewed by: gnn erj Obtained from: Netgate MFC after: 2 weeks Sponsored by: Netgate Differential Revision: https://reviews.freebsd.org/D5448
* Fix and clean up usage of DMA and TSO segments:marius2016-02-235-6/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - At Intel it is believed that most of their products support "only" 40 DMA segments so lower {EM,IGB}_MAX_SCATTER accordingly. Actually, 40 is more than plenty to handle full size TSO packets so it doesn't make sense to further distinguish between MAC variants that really can do 64 DMA segments. Moreover, capping at 40 DMA segments limits the stack usage of {em,igb}_xmit() that - given the rare use of more than these - previously hardly was justifiable, while still being sufficient to avoid the problems seen with em(4) and EM_MAX_SCATTER set to 32. - In igb(4), pass the actually supported TSO parameters up the stack. Previously, the defaults set in if_attach_internal() were applied, i. e. a maximum of 35 TSO segments, which made supporting more than these in the driver pointless. However, this might explain why no problems were seen with IGB_MAX_SCATTER at 64. - In em(4), take the 5 m_pullup(9) invocations performed by em_xmit() in the TSO case into account when reporting TSO parameters upwards. In the worst case, each of these calls will add another mbuf and, thus, the requirement for an additional DMA segment. So for best performance, it doesn't make sense to advertize a maximum of TSO segments that typically will require defragmentation in em_xmit(). Again, this leaves enough room to handle full size TSO packets. - Drop TSO macros from if_lem.h given that corresponding MACS don't support TSO in the first place. Reviewed by: erj, sbruno, jeffrey.e.pieper_intel.com Approved by: erj MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D5238
* Update em(4) to 7.6.1; update igb(4) to 2.5.3.erj2016-02-0523-189/+1342
| | | | | | | | | | | | | | | | | | | | | | | | | | Major changes: - Add i219/i219(2) hardware support. (Found on Skylake generation and newer chipsets.) - Further to the last Skylake support diff, this one also includes support for the Lewisburg chipset (i219(3)). - Add a workaround to an igb hardware errata. All 1G server products need to have IPv6 extension header parsing turned off. This should be listed in the specification updates for current 1G server products, e.g. for i350 it's errata #37 in this document: http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/ethernet-controller-i350-spec-update.pdf - Avoton (i354) PHY errata workaround added And a bunch of minor fixes, as well as #defines for things that the current em(4)/igb(4) drivers don't implement. Differential Revision: https://reviews.freebsd.org/D3162 Reviewed by: sbruno, marius, gnn Approved by: gnn MFC after: 2 weeks Sponsored by: Intel Corporation
* As it turns out, one of the more or less recent changes to em(4)marius2016-02-011-2/+9
| | | | | | | | | | | causes watchdog timeouts when using TSO4 at link speeds below Gigabit, at least with 82573E. So disable the assist automatically when at lower speeds. Submitted by: jfv Approved by: erj Obtained from: D3162 MFC after: 3 days
* Add optimizing LRO wrapper:hselasky2016-01-191-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add optimizing LRO wrapper which pre-sorts all incoming packets according to the hash type and flowid. This prevents exhaustion of the LRO entries due to too many connections at the same time. Testing using a larger number of higher bandwidth TCP connections showed that the incoming ACK packet aggregation rate increased from ~1.3:1 to almost 3:1. Another test showed that for a number of TCP connections greater than 16 per hardware receive ring, where 8 TCP connections was the LRO active entry limit, there was a significant improvement in throughput due to being able to fully aggregate more than 8 TCP stream. For very few very high bandwidth TCP streams, the optimizing LRO wrapper will add CPU usage instead of reducing CPU usage. This is expected. Network drivers which want to use the optimizing LRO wrapper needs to call "tcp_lro_queue_mbuf()" instead of "tcp_lro_rx()" and "tcp_lro_flush_all()" instead of "tcp_lro_flush()". Further the LRO control structure must be initialized using "tcp_lro_init_args()" passing a non-zero number into the "lro_mbufs" argument. - Make LRO statistics 64-bit. Previously 32-bit integers were used for statistics which can be prone to wrap-around. Fix this while at it and update all SYSCTL's which expose LRO statistics. - Ensure all data is freed when destroying a LRO control structures, especially leftover LRO entries. - Reduce number of memory allocations needed when setting up a LRO control structure by precomputing the total amount of memory needed. - Add own memory allocation counter for LRO. - Bump the FreeBSD version to force recompilation of all KLDs due to change of the LRO control structure size. Sponsored by: Mellanox Technologies Reviewed by: gallatin, sbruno, rrs, gnn, transport Tested by: Netflix Differential Revision: https://reviews.freebsd.org/D4914
* Given that em(4), lem(4) and igb(4) hardware doesn't require themarius2016-01-136-37/+36
| | | | | | | | | alignment guarantees provided by m_defrag(9), use m_collapse(9) instead for performance reasons. While at it, sanitize the statistics softc members, i. e. retire unused ones and add SYSCTL nodes missing for actually used ones. Differential Revision: https://reviews.freebsd.org/D4717
* Disable the reuse of checksum offload context descriptors in the casesbruno2016-01-071-45/+63
| | | | | | | | of multiple queues in em(4). Document errata in the code. MFC after: 2 weeks Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D3995
* Switch em(4) to the extended RX descriptor format. This matches thesbruno2016-01-072-87/+121
| | | | | | | | | | | | | | | | | | 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
* Wow, um ... sorry about that. The commit log for this code should havesbruno2016-01-071-63/+45
| | | | read that it was for EM_MULTIQUEUE. Revert this and try again.
* Switch em(4) to the extended RX descriptor format. This matches thesbruno2016-01-071-45/+63
| | | | | | | | e1000/e1000e split in linux. MFC after: 2 weeks Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D3447
* Add support for sysctl knobs to live tune the tx packet processing limitssbruno2015-12-232-3/+13
| | | | | | | | | | in igb and fix a wrap-around bug. Reviewed by: hiren Obtained from: Jason (j@nitrology.com) MFC after: 2 weeks Sponsored by: LimeLight Networks Differential Revision: https://reviews.freebsd.org/D4039
* Add support for SCTP checksum offloading for the 82580 controllertuexen2015-11-101-4/+7
| | | | | | | | similar to the 82576 controller. Tested with Intel i340 cards. Reviewed by: erj@ MFC after: 1 week
* Revert 287914,287762.sbruno2015-09-1926-1428/+381
| | | | | | | Reports of breakage on igb(4) have been narrowed down to 287762 and 287914 is an dependant change. Submitted by: erj
* Add Intel Skylake/I219 Supportsbruno2015-09-172-3/+165
| | | | | | | | | | - New em(4) device in currently shipping products Differential Revision: https://reviews.freebsd.org/D3163 Submitted by: erj@freebsd.org Reviewed by: jfv@freebsd.org MFC after: 2 weeks Sponsored by: Intel Corporation
* Update em(4) with D3162 after testing further on hardware that failedsbruno2015-09-1324-378/+1263
| | | | | | | | | | | | | | | | | | | | | | | to attach with the last version of this commit. This commit fixes attach failures on "ICH8" class devices via modifications to e1000_init_nvm_params_ich8lan() - Fix compiler warning in 80003es2lan.c - Add return value handler for e1000_*_kmrn_reg_80003es2lan - Fix usage of DEBUGOUT - Remove unnecessary variable initializations. - Removed unused variables (complaints from gcc). - Edit defines in 82571.h. - Add workaround for igb hw errata. - Shared code changes for Skylake/I219 support. - Remove unused OBFF and LTR functions. Tested by some of the folks that reported breakage in previous incarnation. Thanks to AllanJude, gjb, gnn, tijl for tempting fate with their machines. Submitted by: erj@freebsd.org MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D3162
* Revert last two commits to em(4)/igb(4). Reports are coming in thatsbruno2015-09-0526-1433/+386
| | | | | | this breaks initialization and reads from EEPROM on boot/driver load. r287469 is being reverted as a dependancy on r287467
* em(4): Add Skylake/I219 support.sbruno2015-09-042-3/+165
| | | | | | | | | | | | - driver rev 7.5.2 - use new functions em_flush* for i219 devices Differential Revision: https://reviews.freebsd.org/D3163 Submitted by: erj jfv Reviewed by: jfv MFC after: 1 month Relnotes: Yes Sponsored by: Intel Corporation
* e1000: Shared code updatessbruno2015-09-0424-383/+1268
| | | | | | | | | | | | | | | | | - Fix compiler warning in 80003es2lan.c - Add return value handler for e1000_*_kmrn_reg_80003es2lan - Fix usage of DEBUGOUT - Remove unnecessary variable initializations. - Removed unused variables (complaints from gcc). - Edit defines in 82571.h. - Add workaround for igb hw errata. - Shared code changes for Skylake/I219 support. - Remove unused OBFF and LTR functions. Differential Revision: https://reviews.freebsd.org/D3162 Submitted by: erj MFC after: 1 month Sponsored by: Intel Corporation
* igb(4): Update and fix HW erratasbruno2015-09-042-150/+117
| | | | | | | | | | - HW errata workaround for IPv6 offload w/ extension headers - Edited start of if_igb.c (Device IDs / #includes) to match ixgbe/ixl Differential Revision: https://reviews.freebsd.org/D3165 Submitted by: erj MFC after: 1 month Sponsored by: Intel Corporation
* Restrict tso_max to IP_MAXPACKET to avoid the panic reported in:sbruno2015-08-311-1/+1
| | | | | | | https://lists.freebsd.org/pipermail/freebsd-current/2015-August/057192.html Submitted by: pyunyh@gmail.com MFC after: 2 weeks
* Style/whitespace cleanup in shared/common code.sbruno2015-08-2413-338/+309
| | | | | | Differential Revision: https://reviews.freebsd.org/D3159 Submitted by: erj MFC after: 2 weeks
* Bump all copywrite dates to 2015sbruno2015-08-1639-39/+39
| | | | | | | Differential Revision: https://reviews.freebsd.org/D3160 Submitted by: erj MFC after: 2 weeks Sponsored by: Intel Corportation
* e1000/if_lem.c bump to 1.1.0sbruno2015-08-162-8/+1
| | | | | | | | | - deprecate fbsd 8 Differential Revision: https://reviews.freebsd.org/D3164 Submitted by: erj MFC after: 2 weeks Sponsored by: Intel Corporation
* Increase EM_MAX_SCATTER to 64 such that the size of ↵sbruno2015-08-162-66/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | em_xmit()::segs[EM_MAX_SCATTER] doesn't get overrun by things like NFS that can and do shove more than 32 segs when being used with em(4) and TSO4. Update tso handling code in em_xmit() with update from jhb@ in email thread: https://lists.freebsd.org/pipermail/freebsd-net/2014-July/039306.html set ifp->if_hw_tsomax, ifp->if_hw_tsomaxsegcount & ifp->if_hw_tsomaxsegsize to appropriate values. Define a TSO workaround "magic" number of 4 that is used to avoid an alignment issue in hardware. Change a couple of integer values that were used as booleans to actual bool types. Ensure that em_enable_intr() enables the appropriate mask of interrupts and not just a hardcoded define of values. PR: 200221 199174 195078 Differential Revision: https://reviews.freebsd.org/D3192 Reviewed by: erj jhb hiren MFC after: 2 weeks Sponsored by: Limelight Networks
* Add capability to disable CRC stripping. This breaks IPMI/BMC capabilities ↵sbruno2015-08-161-1/+6
| | | | | | | | | | | | | | | | on certain adatpers. Linux has been doing the exact same thing since 2008 https://github.com/torvalds/linux/commit/eb7c3adb1ca92450870dbb0d347fc986cd5e2af4 PR: 161277 Differential Revision: https://reviews.freebsd.org/D3282 Submitted by: Fravadona@gmail.com Reviewed by: erj wblock MFC after: 2 weeks Relnotes: yes Sponsored by: Limelight Networks
* Free mbufs when busdma loading fails.hselasky2015-08-012-6/+0
| | | | | Reviewed by: erj, sbruno MFC after: 1 month
* Remove unused txd_saved.sbruno2015-07-251-2/+1
| | | | | | | | | Intialize txd_upper, txd_lower and txd_used at declaration. Differential Revision: D3174 Reviewed by: erj hiren MFC after: 2 weeks Sponsored by: Limelight Networks
* Add an adapter CORE lock in the DDB hook em_dump_queue to avoid WITNESSsbruno2015-07-161-0/+2
| | | | | | | panic in em_init_locked() while debugging. MFC after: 2 weeks Sponsored by: Limelight Networks
* Fix typo in register definition.kevlo2015-07-161-1/+1
| | | | | Submitted by: James Hung Reviewed by: sbruno
* Sync netmap sources with the version in our private tree.luigi2015-07-103-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Change EM_MULTIQUEUE to a real kernconf entry and enable support forsbruno2015-06-033-194/+481
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Simplify hang detection by stealing the techniques used in ixl(4) andsbruno2015-06-022-50/+49
| | | | | | | | | | | | | | | | | | | | | | | applying them to em(4). Rely on iterations through the local timer, and the tx queue state to determine if an actual hang has occurred. Any time a descriptor is used (packet sent), the tx queue is flagged as busy. Then when txeof runs, it either clears the flag when all is clean, or resets it to 1 if ANY are cleaned, if nothing is cleaned it increments the flag. Local timer simply checks to see if busy ever reaches MAX (10, which is compile time configurable), and then sets it as HUNG, at that point there is one more timer cycle in which to have any cleans, if not a watchdog reset will occur. Differential Revision: https://reviews.freebsd.org/D2019 Submitted by: jfv Reviewed by: hiren Obtained from: Intel Corporation MFC after: 2 weeks Relnotes: Yes Sponsored by: Limelight Networks
* Bump rx_overruns when indicated by the ICR mask.sbruno2015-05-221-0/+3
| | | | | | PR: 199716 MFC after: 3 days Sponsored by: Limelight Networks
* Various fixes to the stats in igb(4), ixgbe(4), and ixl(4).jhb2015-04-301-5/+74
| | | | | | | | | | | | | | | | | | | - Use hardware counters for ifnet stats in igb(4) when possible. This ensures these stats include packets that bypass the regular stack via netmap. - Don't derefence values off the end of the igb(4) VF stats structure. Instead, add a dedicated if_get_counter method for igb(4) VF interfaces. - Report missed packets on igb(4) as input queue drops rather than an input error. - Report bug_ring drop counts as output queue drops for igb(4) and ixgbe(4). - Export the buf_ring drop stats for individual rings via sysctl on ixgbe(4). - Fix a typo that in ixl(4) that caused output queue drops to be reported as input queue drops and input queue drops to be unreported. Differential Revision: https://reviews.freebsd.org/D2402 Reviewed by: jfv, rstone (6) Sponsored by: Norse Corp, Inc.
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