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* net: Remove unneeded NULL check for the allocated ifnetZhenlei Huang2024-07-121-5/+0
| | | | | | | | | | | | | Change 4787572d0580 made if_alloc_domain() never fail, then also do the wrappers if_alloc(), if_alloc_dev(), and if_gethandle(). No functional change intended. Reviewed by: kp, imp, glebius, stevek MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D45740 (cherry picked from commit aa3860851b9f6a6002d135b1cac7736e0995eedc)
* atse(4): Fix a typo in a source code commentGordon Bergling2024-01-231-1/+1
| | | | | | - s/addresss/address/ (cherry picked from commit 2b1e4e5be3047411df5e4d5442aa7de6489a0309)
* sys: Remove $FreeBSD$: one-line .c patternWarner Losh2023-08-163-6/+0
| | | | Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
* sys: Remove $FreeBSD$: two-line .h patternWarner Losh2023-08-161-2/+0
| | | | Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/
* spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSDWarner Losh2023-05-124-4/+4
| | | | | | | | | The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix
* Mechanically convert atse(4) to IfAPIJustin Hibbits2023-02-072-51/+50
| | | | | | Reviewed by: zlei Sponsored by: Juniper Networks, Inc. Differential Revision: https://reviews.freebsd.org/D37795
* altera drivers: Remove unused devclass arguments to DRIVER_MODULE.John Baldwin2022-05-094-6/+2
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* Remove unused miibus_devclass and miibus_fdt_devclass.John Baldwin2022-05-062-2/+2
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* altera: clean up empty lines in .c and .h filesMateusz Guzik2020-09-012-6/+0
| | | | Notes: svn path=/head/; revision=365109
* Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)Pawel Biernacki2020-02-261-2/+4
| | | | | | | | | | | | | | | | | | | r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are still not MPSAFE (or already are but aren’t properly marked). Use it in preparation for a general review of all nodes. This is non-functional change that adds annotations to SYSCTL_NODE and SYSCTL_PROC nodes using one of the soon-to-be-required flags. Mark all obvious cases as MPSAFE. All entries that haven't been marked as MPSAFE before are by default marked as NEEDGIANT Approved by: kib (mentor, blanket) Commented by: kib, gallatin, melifaro Differential Revision: https://reviews.freebsd.org/D23718 Notes: svn path=/head/; revision=358333
* Enter the network epoch in the xdma interrupt handler if requiredRuslan Bukin2020-02-081-4/+5
| | | | | | | | | by a peripheral device driver. Sponsored by: DARPA, AFRL Notes: svn path=/head/; revision=357686
* Introduce flag IFF_NEEDSEPOCH that marks Ethernet interfaces thatGleb Smirnoff2020-01-231-1/+2
| | | | | | | | | | | supposedly may call into ether_input() without network epoch. They all need to be reviewed before 13.0-RELEASE. Some may need be fixed. The flag is not planned to be used in the kernel for a long time. Notes: svn path=/head/; revision=357010
* Convert to if_foreach_llmaddr() KPI.Gleb Smirnoff2019-10-211-16/+9
| | | | Notes: svn path=/head/; revision=353836
* o Rewrite softdma_process_tx() of Altera SoftDMA engine driverRuslan Bukin2019-04-291-1/+6
| | | | | | | | | | | | | | so it does not require a bounce buffer. The only need for this was to align the buffer address. Implement unaligned access and we don't need to copy data twice. o Remove contigmalloc-based bounce buffer from xDMA code since it is not suitable for arbitrary memory provided by platform, which is sometimes a dedicated piece of memory that is not managed by OS at all. Sponsored by: DARPA, AFRL Notes: svn path=/head/; revision=346896
* ifnet: Replace if_addr_lock rwlock with epoch + mutexMatt Macy2018-05-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Run on LLNW canaries and tested by pho@ gallatin: Using a 14-core, 28-HTT single socket E5-2697 v3 with a 40GbE MLX5 based ConnectX 4-LX NIC, I see an almost 12% improvement in received packet rate, and a larger improvement in bytes delivered all the way to userspace. When the host receiving 64 streams of netperf -H $DUT -t UDP_STREAM -- -m 1, I see, using nstat -I mce0 1 before the patch: InMpps OMpps InGbs OGbs err TCP Est %CPU syscalls csw irq GBfree 4.98 0.00 4.42 0.00 4235592 33 83.80 4720653 2149771 1235 247.32 4.73 0.00 4.20 0.00 4025260 33 82.99 4724900 2139833 1204 247.32 4.72 0.00 4.20 0.00 4035252 33 82.14 4719162 2132023 1264 247.32 4.71 0.00 4.21 0.00 4073206 33 83.68 4744973 2123317 1347 247.32 4.72 0.00 4.21 0.00 4061118 33 80.82 4713615 2188091 1490 247.32 4.72 0.00 4.21 0.00 4051675 33 85.29 4727399 2109011 1205 247.32 4.73 0.00 4.21 0.00 4039056 33 84.65 4724735 2102603 1053 247.32 After the patch InMpps OMpps InGbs OGbs err TCP Est %CPU syscalls csw irq GBfree 5.43 0.00 4.20 0.00 3313143 33 84.96 5434214 1900162 2656 245.51 5.43 0.00 4.20 0.00 3308527 33 85.24 5439695 1809382 2521 245.51 5.42 0.00 4.19 0.00 3316778 33 87.54 5416028 1805835 2256 245.51 5.42 0.00 4.19 0.00 3317673 33 90.44 5426044 1763056 2332 245.51 5.42 0.00 4.19 0.00 3314839 33 88.11 5435732 1792218 2499 245.52 5.44 0.00 4.19 0.00 3293228 33 91.84 5426301 1668597 2121 245.52 Similarly, netperf reports 230Mb/s before the patch, and 270Mb/s after the patch Reviewed by: gallatin Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D15366 Notes: svn path=/head/; revision=333813
* Convert atse(4) driver for Altera Triple-Speed Ethernet MegaCore to useRuslan Bukin2018-04-134-1048/+359
| | | | | | | | | | | | | | | xdma(4) interface. This allows us to switch between Altera mSGDMA or SoftDMA engines used by atse(4) device. This also makes atse(4) driver become 25% smaller. Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D9618 Notes: svn path=/head/; revision=332474
* Add driver for Altera SoftDMA® device.Ruslan Bukin2018-04-132-101/+1
| | | | | | | | | | | SoftDMA is a software implementation of DMA engine built using Altera FIFO component. Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D9620 Notes: svn path=/head/; revision=332472
* sys/dev: further adoption of SPDX licensing ID tags.Pedro F. Giffuni2017-11-275-0/+10
| | | | | | | | | | | | | | | 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
* o Fix style.Ruslan Bukin2016-12-281-47/+54
| | | | | | | | | o Remove set but not used variable. Sponsored by: DARPA, AFRL Notes: svn path=/head/; revision=310701
* sys/dev: minor spelling fixes.Pedro F. Giffuni2016-05-031-3/+3
| | | | | | | Most affect comments, very few have user-visible effects. Notes: svn path=/head/; revision=298955
* sys/dev: use our nitems() macro when it is avaliable through param.h.Pedro F. Giffuni2016-04-191-2/+1
| | | | | | | | | | No functional change, only trivial cases are done in this sweep, Drivers that can get further enhancements will be done independently. Discussed in: freebsd-current Notes: svn path=/head/; revision=298307
* Mechanically convert to if_inc_counter().Gleb Smirnoff2014-09-191-9/+9
| | | | Notes: svn path=/head/; revision=271849
* Merge atse(4) interrupt handling and race condition fixes from cheribsd:Bjoern A. Zeeb2014-09-162-71/+183
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 8bd88585ed8e3f7def0d780a1bc30d96fe642b9c Rework atse_rx_cycles handling: count packets instead of fills, and use the limit only when polling, not when in interrupt mode. Otherwise, we may stop reading the FIFO midpacket and clear the event mask even though the FIFO still has data to read, which could stall receive when a large packet arrives. Add a comment about races in the Altera FIFO interface: we may need to do a little more work to handle races than we are. commit 20b39086cc612f8874dc9e6ef4c0c2eb777ba92a Use 'sizeof(data)' rather than '4' when checking an mbuf bound, as is the case for adjusting length/etc. commit e18953174a265f40e9ba60d76af7d288927f5382 Break out atse_intr() into two separate routines, one for each of the two interrupt sources: receive and transmit. commit 6deedb43246ab3f9f597918361831fbab7fac4ce For the RX interrupt, take interest only in ALMOSTEMPTY and OVERFLOW. For the TX interrupt, take interest only in ALMOSTFULL and UNDERFLOW. Perform TX atse_start_locked() once rather than twice in TX interrupt handling -- and only if !FULL, rather than unconditionally. commit 12601972ba08d4380201a74f5b967bdaeb23092c Experimentation suggests that the Altera Triple-Speed Ethernet documentation is incorrect and bits in the event and interrupt-enable registers are not irrationally rearranged relative to the status register. commit 3cff2ffad769289fce3a728152e7be09405385d8 Substantially rework interrupt handling in the atse(4) driver: - Introduce a new macro ATSE_TX_PENDING() which checks whether there is any pending data to transmit, either in an in-progress packet or in the TX queue. - Introduce new ATSE_RX_STATUS_READ() and ATSE_TX_STAUTS_WRITE() macros that query the FIFO status registers rather than event registers, offering level- rather than edge-triggered FIFO conditions. - For RX, interrupt only on full/overflow/underflow; for TX, interrupt only on empty/overflow/underflow. - Add new ATSE_RX_INTR_READ() and ATSE_RX_INTR_WRITE() macros useful for debugging interrupt behaviour. - Add a debug.atse_intr_debug_enable sysctl that causes various pieces of FIFO state to be printed out on each RX or TX interrupt. This is disabled by default but good to turn on if the interface appears to wedge. Also print debugging information when polling. - In the watchdog handler, do receive, not just transmit, processing, to ensure that the rx, not just tx, queue is being handled -- and, in particular, will be drained such that interrupts can resume. - Rework both atse_rx_intr() and atse_tx_intr() to eliminate many race conditions, and add comments on why various things are in various orders. Interactions between modifications to the event and interrupt masks are quite subtle indeed, and we must actively check for a number of races (e.g., event mask cleared; packet arrives; interrupts enabled). We also now use the status registers rather than event registers for FIFO status checks to avoid other races; we continue to use event registers for underflow/overflow. With this change, interrupt-driven operation of atse appears (for the time being) robust. commit 3393bbff5c68a4e61699f9b4a62af5d2a5f918f8 atse: Fix build after 3cff2ffa Obtained from: cheribsd Submitted by: rwatson, emaste Sponsored by: DARPA/AFRL MFC after: 3 days Notes: svn path=/head/; revision=271679
* Use define from if_var.h to access a field inside struct if_data,Gleb Smirnoff2014-08-301-1/+1
| | | | | | | | | that resides in struct ifnet. Sponsored by: Nginx, Inc. Notes: svn path=/head/; revision=270856
* Use ETHER_ALIGN as argument to m_adj() to offset the beginning of packetBjoern A. Zeeb2014-04-161-2/+2
| | | | | | | | | | | | | | rather than the magic number 2. While here fix a typo in a comment. No functional changes. MFC after: 1 week Sponsored by: DARPA/AFRL Notes: svn path=/head/; revision=264542
* Follow r261352 by updating all drivers which are children of simplebusIan Lepore2014-02-021-0/+3
| | | | | | | | | | | | | | | | to check the status property in their probe routines. Simplebus used to only instantiate its children whose status="okay" but that was improper behavior, fixed in r261352. Now that it doesn't check anymore and probes all its children; the children all have to do the check because really only the children know how to properly interpret their status property strings. Right now all existing drivers only understand "okay" versus something- that's-not-okay, so they all use the new ofw_bus_status_okay() helper. Notes: svn path=/head/; revision=261410
* Another round of removing historical mbuf(9) allocator flags.Gleb Smirnoff2014-01-161-1/+1
| | | | | | | | | They are breeding! New ones arouse since last round. Sponsored by: Nginx, Inc. Notes: svn path=/head/; revision=260718
* These nexus attachments do not execute a real probe and so needNathan Whitehorn2013-10-291-1/+1
| | | | | | | BUS_PROBE_NOWILDCARD set. Notes: svn path=/head/; revision=257336
* Add a couple includes if net/if_var.h that were missed in r257176.Brooks Davis2013-10-282-0/+2
| | | | Notes: svn path=/head/; revision=257269
* MFP4: 221483, 221567, 221568, 221670, 221677, 221678, 221800, 221801,Brooks Davis2013-10-185-0/+3037
221804, 221805, 222004, 222006, 222055, 222820, 1135077, 1135118, 1136259 Add atse(4), a driver for the Altera Triple Speed Ethernet MegaCore. The current driver support gigabit Ethernet speeds only and works with the MegaCore only in the internal FIFO configuration in the soon to be open sourced BERI CPU configuration. Submitted by: bz MFC after: 3 days Sponsored by: DARPA/AFRL Notes: svn path=/head/; revision=256752
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