src/sys/dev/wtap, branch releng/12.4

MFC r344749-344750,344841-344843,345284,346405,346470,347140-347141,348331,

2020-09-10T19:00:17Z

349593,351868,353506-353507,353809,353853,353858,353860,356852,359063, 359158,360819,360888,360950-360951,360953-360954,360998,361009,361025, 361085,361087,361098,361106-361107,361115,361118,361319-361321,361486, 361560,361566,361626,361636-361637,361687,361726,361737-361738,361768, 361778,361811-361813,361819-361822,361825-361826,361834,361863-361864, 361878,361885-361886,362016,362084-362085,362156-362157,362161-362162, 362210-362213,362216,362256-362257,362671,362815-362816,363325, 363327-363328,364011-364012,364299,364301,364303,364312,364315, 364326-364327,364551,364553,364673,365097,365116,365125-365126, 365130-365131,365198,365419 by adrian(78), bcran(1), bz(13), cem(1), gavin(1), glebius(6), landonf(1), mjg(7) Merge WiFi net80211, drivers, and management in order to support better 11n and upcoming 11ac. This includes an ath(4) update, some run(4) 11n support, 11n for otus(4), A-MPDU, A-MSDU, A-MPDU+A-MSDU and Fast frames options, scanning fixes, enahnced PRIV checks for jails, restored parent device name printing, improvements for upcoming VHT support, lots of under-the-hood infrastructure improvements, new device ID, debug tools updates, some whistespace changes (to make future MFCs easier). This does not include (nost) epoch(9) related changes as too much other infrastructure was not merged for that. Bump __FreeBSD_veresion as this changes the priv(9) names (not know to be used externally), and net80211 structures. Tested on: some ath(4) AP, run(4) STA, and rtwn(4) STA Discussed with: adrian (extremly briefly) Sponsored by: Rubicon Communications, LLC (d/b/a "Netgate") [partially] Relnotes: yes

MFC r344990:

2019-03-28T09:16:00Z

Fix ieee80211_radiotap(9) usage in wireless drivers: - Alignment issues: * Add missing __packed attributes + padding across all drivers; in most places there was an assumption that padding will be always minimally suitable; in few places - e.g., in urtw(4) / rtwn(4) - padding was just missing. * Add __aligned(8) attribute for all Rx radiotap headers since they can contain 64-bit TSF timestamp; it cannot appear in Tx radiotap headers, so just drop the attribute here. Refresh ieee80211_radiotap(9) man page accordingly. - Since net80211 automatically updates channel frequency / flags in ieee80211_radiotap_chan_change() drop duplicate setup for these fields in drivers.

MFC r343682:

2019-02-06T02:35:56Z

sys/dev/wtap: Check return value from malloc(..., M_NOWAIT) and drop unneeded cast.

UDP: further performance improvements on tx

2018-05-23T21:02:14Z

Cumulative throughput while running 64 netperf -H $DUT -t UDP_STREAM -- -m 1 on a 2x8x2 SKL went from 1.1Mpps to 2.5Mpps Single stream throughput increases from 910kpps to 1.18Mpps Baseline: https://people.freebsd.org/~mmacy/2018.05.11/udpsender2.svg - Protect read access to global ifnet list with epoch https://people.freebsd.org/~mmacy/2018.05.11/udpsender3.svg - Protect short lived ifaddr references with epoch https://people.freebsd.org/~mmacy/2018.05.11/udpsender4.svg - Convert if_afdata read lock path to epoch https://people.freebsd.org/~mmacy/2018.05.11/udpsender5.svg A fix for the inpcbhash contention is pending sufficient time on a canary at LLNW. Reviewed by: gallatin Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D15409

sys/dev: further adoption of SPDX licensing ID tags.

2017-11-27T14:52:40Z

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.

etc: minor spelling fixes.

2016-05-02T16:47:28Z

Mostly comments but also some user-visible strings. MFC after: 2 weeks

wtap: do not include when is already included

2015-12-13T20:53:51Z

Approved by: adrian (mentor) Differential Revision: https://reviews.freebsd.org/D4536

wtap: remove some obsolete radiotap(9) code

2015-10-22T15:20:33Z

This code is not needed since r192468. Approved by: adrian (mentor) Differential Revision: https://reviews.freebsd.org/D3975

net80211: drop ieee80211_beacon_offsets parameter from ieee80211_beacon_alloc() and ieee80211_beacon_update()

2015-10-03T22:12:25Z

Submitted by: Differential Revision: https://reviews.freebsd.org/D3659

net80211: include one copy of struct ieee80211_beacon_offsets into ieee80211vap

2015-09-22T06:34:07Z

Submitted by: Andriy Voskoboinyk Differential Revision: https://reviews.freebsd.org/D3658