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2025-03-27dev: Use recently added improvements to PME# support to simplify driversJohn Baldwin
Depend on the PCI bus driver clearing PME# after resume to remove the need for clearing PME# from DEVICE_RESUME methods. Use pci_has_pm and pci_enable_pme. Reviewed by: Krzysztof Galazka <krzysztof.galazka@intel.com> Differential Revision: https://reviews.freebsd.org/D49251
2025-01-02Remove now-redundant calls to device_delete_childJohn Baldwin
Deleting a child explicitly before calling bus_generic_detach is now redundant, so remove those calls and rely on bus_generic_detach to delete children instead. Differential Revision: https://reviews.freebsd.org/D47961
2024-09-03age(4): Stop checking for failures from taskqueue_create_fast(M_WAITOK)Zhenlei Huang
MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D45853
2024-06-28net: Remove unneeded NULL check for the allocated ifnetZhenlei Huang
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
2023-11-26sys: Automated cleanup of cdefs and other formattingWarner Losh
Apply the following automated changes to try to eliminate no-longer-needed sys/cdefs.h includes as well as now-empty blank lines in a row. Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/ Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/ Remove /\n+#if.*\n#endif.*\n+/ Remove /^#if.*\n#endif.*\n/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/ Sponsored by: Netflix
2023-08-16sys: Remove $FreeBSD$: one-line .c patternWarner Losh
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
2023-08-16sys: Remove $FreeBSD$: two-line .h patternWarner Losh
Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/
2023-05-12spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSDWarner Losh
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
2023-02-06Mechanically convert age(4), alc(4), and ale(4) to IfAPIJustin Hibbits
Sponsored by: Juniper Networks, Inc. Differential Revision: https://reviews.freebsd.org/D37787
2022-06-05if_age(4): Fix a typo in a source code commentGordon Bergling
- s/indepent/independent/ MFC after: 3 days
2022-05-06age: Remove unused devclass argument to DRIVER_MODULE.John Baldwin
2022-05-06Remove unused miibus_devclass and miibus_fdt_devclass.John Baldwin
2020-09-01if_age: clean up empty lines in .c and .h filesMateusz Guzik
Notes: svn path=/head/; revision=365102
2020-02-26Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)Pawel Biernacki
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
2019-10-21Convert to if_foreach_llmaddr() KPI.Gleb Smirnoff
Notes: svn path=/head/; revision=353805
2018-09-26Reapply, with minor tweaks, r338025, from the original commit:Warner Losh
Remove unused and easy to misuse PNP macro parameter Inspired by r338025, just remove the element size parameter to the MODULE_PNP_INFO macro entirely. The 'table' parameter is now required to have correct pointer (or array) type. Since all invocations of the macro already had this property and the emitted PNP data continues to include the element size, there is no functional change. Mostly done with the coccinelle 'spatch' tool: $ cat modpnpsize0.cocci @normaltables@ identifier b,c; expression a,d,e; declarer MODULE_PNP_INFO; @@ MODULE_PNP_INFO(a,b,c,d, -sizeof(d[0]), e); @singletons@ identifier b,c,d; expression a; declarer MODULE_PNP_INFO; @@ MODULE_PNP_INFO(a,b,c,&d, -sizeof(d), 1); $ rg -l MODULE_PNP_INFO -- sys | \ xargs spatch --in-place --sp-file modpnpsize0.cocci (Note that coccinelle invokes diff(1) via a PATH search and expects diff to tolerate the -B flag, which BSD diff does not. So I had to link gdiff into PATH as diff to use spatch.) Tinderbox'd (-DMAKE_JUST_KERNELS). Approved by: re (glen) Notes: svn path=/head/; revision=338948
2018-08-19Back out r338035 until Warner is finished churning GSoC PNP patchesConrad Meyer
I was not aware Warner was making or planning to make forward progress in this area and have since been informed of that. It's easy to apply/reapply when churn dies down. Notes: svn path=/head/; revision=338037
2018-08-19Remove unused and easy to misuse PNP macro parameterConrad Meyer
Inspired by r338025, just remove the element size parameter to the MODULE_PNP_INFO macro entirely. The 'table' parameter is now required to have correct pointer (or array) type. Since all invocations of the macro already had this property and the emitted PNP data continues to include the element size, there is no functional change. Mostly done with the coccinelle 'spatch' tool: $ cat modpnpsize0.cocci @normaltables@ identifier b,c; expression a,d,e; declarer MODULE_PNP_INFO; @@ MODULE_PNP_INFO(a,b,c,d, -sizeof(d[0]), e); @singletons@ identifier b,c,d; expression a; declarer MODULE_PNP_INFO; @@ MODULE_PNP_INFO(a,b,c,&d, -sizeof(d), 1); $ rg -l MODULE_PNP_INFO -- sys | \ xargs spatch --in-place --sp-file modpnpsize0.cocci (Note that coccinelle invokes diff(1) via a PATH search and expects diff to tolerate the -B flag, which BSD diff does not. So I had to link gdiff into PATH as diff to use spatch.) Tinderbox'd (-DMAKE_JUST_KERNELS). Notes: svn path=/head/; revision=338035
2018-06-13Add PNP info to PCI attachments of age driverWarner Losh
Reviewed by: imp, chuck Submitted by: Lakhan Shiva Kamireddy <lakhanshiva@gmail.com> Sponsored by: Google, Inc. (GSoC 2018) Notes: svn path=/head/; revision=335085
2018-05-18ifnet: Replace if_addr_lock rwlock with epoch + mutexMatt Macy
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
2017-11-27sys/dev: further adoption of SPDX licensing ID tags.Pedro F. Giffuni
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
2017-04-14Remove dead code.Pyun YongHyeon
Notes: svn path=/head/; revision=316821
2016-04-26sys/dev: extend use of the howmany() macro when available.Pedro F. Giffuni
We have a howmany() macro in the <sys/param.h> header that is convenient to re-use as it makes things easier to read. Notes: svn path=/head/; revision=298646
2016-04-19sys/dev: use our nitems() macro when it is avaliable through param.h.Pedro F. Giffuni
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
2016-02-18Fix variable assignment.Pyun YongHyeon
Found by: PVS-Studio Notes: svn path=/head/; revision=295735
2014-09-18Mechanically convert to if_inc_counter().Gleb Smirnoff
Notes: svn path=/head/; revision=271828
2014-08-30Use define from if_var.h to access a field inside struct if_data,Gleb Smirnoff
that resides in struct ifnet. Sponsored by: Nginx, Inc. Notes: svn path=/head/; revision=270856
2014-06-11Fix various NIC drivers to properly cleanup static DMA resources.John Baldwin
In particular, don't check the value of the bus_dma map against NULL to determine if either bus_dmamem_alloc() or bus_dmamap_load() succeeded. Instead, assume that bus_dmamap_load() succeeeded (and thus that bus_dmamap_unload() should be called) if the bus address for a resource is non-zero, and assume that bus_dmamem_alloc() succeeded (and thus that bus_dmamem_free() should be called) if the virtual address for a resource is not NULL. In many cases these bugs could result in leaks when a driver was detached. Reviewed by: yongari MFC after: 2 weeks Notes: svn path=/head/; revision=267363
2014-03-31Increase the number of TX DMA segments from 32 to 35. It turnedPyun YongHyeon
out 32 is not enough to support a full sized TSO packet. While I'm here fix a long standing bug introduced in r169632 in bce(4) where it didn't include L2 header length of TSO packet in the maximum DMA segment size calculation. In collaboration with: rmacklem MFC after: 2 weeks Notes: svn path=/head/; revision=263957
2013-10-26The r48589 promised to remove implicit inclusion of if_var.h soon. PrepareGleb Smirnoff
to this event, adding if_var.h to files that do need it. Also, include all includes that now are included due to implicit pollution via if_var.h Sponsored by: Netflix Sponsored by: Nginx, Inc. Notes: svn path=/head/; revision=257176
2013-06-17Be sure to actually decrement the "count" parameter for each processedMark Johnston
descriptor so that we return when the threshold has been reached. Reviewed by: yongari MFC after: 1 week Notes: svn path=/head/; revision=251872
2013-02-05Rework jumbo frame handling. QAC confirmed that the controllerPyun YongHyeon
requires 8 bytes alignment on RX buffer. Given that non-jumbo frame works on any alignments I guess this DMA limitation for RX buffer could be jumbo frame specific one. Also I'm not sure whether this DMA limitation is related with 64bit DMA. Previously age(4) disabled 64bit DMA addressing due to silent data corruption. So we may need more testing on re-enabling 64bit DMA in future. While I'm here, change mbuf chaining algorithm to use fixed sized buffer and force software checksum if controller reports length error. According to QAC, RFD is not updated at all for jumbo frame so it works just like alc(4) controllers. This change also added alignment fixup for strict alignment architectures. Because I'm not aware of any non-x86 machines that use age(4) controllers it's just for completeness at this moment. Wit this change, jumbo frame should work with age(4). Tested by: Christian Gusenbauer < c47g <> gmx dot at > MFC after: 1 week Notes: svn path=/head/; revision=246341
2012-12-04Mechanically substitute flags from historic mbuf allocator withGleb Smirnoff
malloc(9) flags in sys/dev. Notes: svn path=/head/; revision=243857
2012-10-30TSO engine of L1 requires a separate DMA descriptor for TCPPyun YongHyeon
payload. This means driver has to split a TX buffer into two pieces of TX buffers when the TX buffer contains both ethernet/IP/TCP header and partial TCP payload. The controller does not require all header should be in a TX buffer but driver forced it to compute IP/TCP header size/offset which is required parameter to configure DMA descriptor for TSO. While here, slightly reorder DMA descriptor setup to enhance readability and remove unnecessary code for TSO(upper stack never requests TSO when the frame length is less than or equal to MTU). Reported by: Yamagi Burmeister <lists <> yamagi dot org> Tested by: Yamagi Burmeister <lists <> yamagi dot org> MFC After: 1 week Notes: svn path=/head/; revision=242348
2011-10-17Close a race where SIOCGIFMEDIA ioctl get inconsistent link status.Pyun YongHyeon
Because driver is accessing a common MII structure in mii_pollstat(), updating user supplied structure should be done before dropping a driver lock. Reported by: Karim (fodillemlinkarimi <> gmail dot com) Notes: svn path=/head/; revision=226478
2011-05-03- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOPMarius Strobl
(reporting IFM_LOOP based on BMCR_LOOP is left in place though as it might provide useful for debugging). For most mii(4) drivers it was unclear whether the PHYs driven by them actually support loopback or not. Moreover, typically loopback mode also needs to be activated on the MAC, which none of the Ethernet drivers using mii(4) implements. Given that loopback media has no real use (and obviously hardly had a chance to actually work) besides for driver development (which just loopback mode should be sufficient for though, i.e one doesn't necessary need support for loopback media) support for it is just dropped as both NetBSD and OpenBSD already did quite some time ago. - Let mii_phy_add_media() also announce the support of IFM_NONE. - Restructure the PHY entry points to use a structure of entry points instead of discrete function pointers, and extend this to include a "reset" entry point. Make sure any PHY-specific reset routine is always used, and provide one for lxtphy(4) which disables MII interrupts (as is done for a few other PHYs we have drivers for). This includes changing NIC drivers which previously just called the generic mii_phy_reset() to now actually call the PHY-specific reset routine, which might be crucial in some cases. While at it, the redundant checks in these NIC drivers for mii->mii_instance not being zero before calling the reset routines were removed because as soon as one PHY driver attaches mii->mii_instance is incremented and we hardly can end up in their media change callbacks etc if no PHY driver has attached as mii_attach() would have failed in that case and not attach a miibus(4) instance. Consequently, NIC drivers now no longer should call mii_phy_reset() directly, so it was removed from EXPORT_SYMS. - Add a mii_phy_dev_attach() as a companion helper to mii_phy_dev_probe(). The purpose of that function is to perform the common steps to attach a PHY driver instance and to hook it up to the miibus(4) instance and to optionally also handle the probing, addition and initialization of the supported media. So all a PHY driver without any special requirements has to do in its bus attach method is to call mii_phy_dev_attach() along with PHY-specific MIIF_* flags, a pointer to its PHY functions and the add_media set to one. All PHY drivers were updated to take advantage of mii_phy_dev_attach() as appropriate. Along with these changes the capability mask was added to the mii_softc structure so PHY drivers taking advantage of mii_phy_dev_attach() but still handling media on their own do not need to fiddle with the MII attach arguments anyway. - Keep track of the PHY offset in the mii_softc structure. This is done for compatibility with NetBSD/OpenBSD. - Keep track of the PHY's OUI, model and revision in the mii_softc structure. Several PHY drivers require this information also after attaching and previously had to wrap their own softc around mii_softc. NetBSD/OpenBSD also keep track of the model and revision on their mii_softc structure. All PHY drivers were updated to take advantage as appropriate. - Convert the mebers of the MII data structure to unsigned where appropriate. This is partly inspired by NetBSD/OpenBSD. - According to IEEE 802.3-2002 the bits actually have to be reversed when mapping an OUI to the MII ID registers. All PHY drivers and miidevs where changed as necessary. Actually this now again allows to largely share miidevs with NetBSD, which fixed this problem already 9 years ago. Consequently miidevs was synced as far as possible. - Add MIIF_NOMANPAUSE and mii_phy_flowstatus() calls to drivers that weren't explicitly converted to support flow control before. It's unclear whether flow control actually works with these but typically it should and their net behavior should be more correct with these changes in place than without if the MAC driver sets MIIF_DOPAUSE. Obtained from: NetBSD (partially) Reviewed by: yongari (earlier version), silence on arch@ and net@ Notes: svn path=/head/; revision=221407
2011-04-01Partially revert r184106. RX buffer ring also needs bus_dmamap_sync().Pyun YongHyeon
Tested by: Yamagi Burmeister (lists <> yamagi dot org) MFC after: 1 week Notes: svn path=/head/; revision=220252
2011-04-0164bit DMA caused data corruption. Unfortunately there is no knownPyun YongHyeon
workaround to use 64bit DMA. Disable 64bit DMA on Attansic L1 controller. Tested by: Yamagi Burmeister (lists <> yamagi dot org) MFC after: 1 week Notes: svn path=/head/; revision=220249
2011-03-23Do a sweep of the tree replacing calls to pci_find_extcap() with calls toJohn Baldwin
pci_find_cap() instead. Notes: svn path=/head/; revision=219902
2011-01-13Forgot to remove unlock of the driver lock from age_start_locked() whenJohn Baldwin
converting it to a locked variant. PR: kern/153948 Notes: svn path=/head/; revision=217349
2011-01-03Add a 'locked' variant of the foo_start() routine and call it directlyJohn Baldwin
from interrupt handlers and watchdog routines instead of queueing a task to call foo_start(). Reviewed by: yongari MFC after: 1 month Notes: svn path=/head/; revision=216925
2010-10-15Convert the PHY drivers to honor the mii_flags passed down and convertMarius Strobl
the NIC drivers as well as the PHY drivers to take advantage of the mii_attach() introduced in r213878 to get rid of certain hacks. For the most part these were: - Artificially limiting miibus_{read,write}reg methods to certain PHY addresses; we now let mii_attach() only probe the PHY at the desired address(es) instead. - PHY drivers setting MIIF_* flags based on the NIC driver they hang off from, partly even based on grabbing and using the softc of the parent; we now pass these flags down from the NIC to the PHY drivers via mii_attach(). This got us rid of all such hacks except those of brgphy() in combination with bce(4) and bge(4), which is way beyond what can be expressed with simple flags. While at it, I took the opportunity to change the NIC drivers to pass up the error returned by mii_attach() (previously by mii_phy_probe()) and unify the error message used in this case where and as appropriate as mii_attach() actually can fail for a number of reasons, not just because of no PHY(s) being present at the expected address(es). Reviewed by: jhb, yongari Notes: svn path=/head/; revision=213893
2010-10-14Make sure to not use stale ip/tcp header pointers. The ip/tcpPyun YongHyeon
header parser uses m_pullup(9) to get access to mbuf chain. m_pullup(9) can allocate new mbuf chain and free old one if the space left in the mbuf chain is not enough to hold requested contiguous bytes. Previously drivers can use stale ip/tcp header pointer if m_pullup(9) returned new mbuf chain. Reported by: Andrew Boyer (aboyer <> averesystems dot com) MFC after: 10 days Notes: svn path=/head/; revision=213844
2010-08-24Remove unnecessary controller reinitialization.Pyun YongHyeon
PR: kern/87506 Notes: svn path=/head/; revision=211768
2010-04-19With r206844, CSUM_TCP is also set for CSUM_TSO case. ModifyPyun YongHyeon
drivers to take into account for the change. Basically CSUM_TSO should be checked before checking CSUM_TCP. Notes: svn path=/head/; revision=206876
2010-02-26Add TSO support on VLANs. While I'm here remove unnecessary checkPyun YongHyeon
of VLAN hardware checksum offloading. vlan(4) already takes care of this. Notes: svn path=/head/; revision=204377
2009-09-29Fix multicast handling. All Atheros controllers use big-endian formPyun YongHyeon
in computing multicast hash. PR: kern/139137 Notes: svn path=/head/; revision=197627
2009-06-26Use if_maddr_rlock()/if_maddr_runlock() rather than IF_ADDR_LOCK()/Robert Watson
IF_ADDR_UNLOCK() across network device drivers when accessing the per-interface multicast address list, if_multiaddrs. This will allow us to change the locking strategy without affecting our driver programming interface or binary interface. For two wireless drivers, remove unnecessary locking, since they don't actually access the multicast address list. Approved by: re (kib) MFC after: 6 weeks Notes: svn path=/head/; revision=195049
2009-05-20pci(4) handles PCIM_CMD_INTxDIS so there is no need to poke thisPyun YongHyeon
bit in driver. Notes: svn path=/head/; revision=192418
2009-03-28o Don't access VPD even if hardware advertised the capability.Pyun YongHyeon
It seems that some revision of controller hang while accessing the VPD. Because VPD access routine are unused, nuke it. o Let TWSI reload EEPROM if VPD capability is detected. Reloading EEPROM will also set ethernet address so age(4) now reads AGE_PAR0 and AGE_PAR1 register to get ethernet address. This removes a lot of hack and enhance readability a lot. o Double PHY reset timeout as it takes more time to take PHY out of power-saving state. o Explicitly check power-saving state by checking undocumented PHY registers. If link is not up, poke undocumented registers to take PHY out of power-saving state. This is the same way what Linux does. On resume, make sure to wake up PHY. o Don't rely on auto-clearing feature of master reset bit, just wait 1ms and check idle status of MAC. o Add PCI device revision information in bootverbose mode. This should fix occasional controller hang in device attach phase. Reported by: barbara < barbara.xxx1975 at libero DOT it > Tested by: barbara < barbara.xxx1975 at libero DOT it > Notes: svn path=/head/; revision=190499
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