net80211: add initial README.md and PROTOCOL.md
* Add top level README.md, linking to in progress and todo items
* Add an 802.11 protocol overview, with todo items - this is designed
to provide a basic introduction to 802.11 for people wishing to work
on net80211 and drivers.
* DEBUG.md - cover the debug API
* DATAPATH_TRANSMIT.md - transmit datapath
* DATAPATH_RECEIVE.md - receive datapath
* PROTOCOL.md - a high level (for values of "high") overview of
the 802.11 protocol and where it intersects with net80211
Differential Revision: https://reviews.freebsd.org/D56760
net80211: update/add some VHT doxygen documentation
Add and update some documentation to be picked up by doxygen.
Differential Revision: https://reviews.freebsd.org/D57079
net80211: add some example doxygen inline documents
This isn't supposed to be comprehensive, I want to have examples
for the common doxygen comments:
* describing a struct
* inside a struct - single line before the item
* inside a struct - same line after an item
* inside a struct - multi-line before an item
These build fine with the doxygen build in tools/kerneldoc/subsys/ .
Differential Revision: https://reviews.freebsd.org/D57056
net80211: create ieee80211_ht_check_bar_exceed_retry_count()
Create a function to check if the BAR retry limit has been reached.
Use this in if_ath_tx instead of a hard-coded value.
I've been meaning to do this for a long time.
Differential Revision: https://reviews.freebsd.org/D57055
bin/sh: Fix history long line truncation/corruption
When reading from standard input with editline history enabled, increase
buffer size to accomodate long lines so that history is recorded
correctly. Cleanup el_gets() handling avoiding potentially dangerous
retention of pointers to editline buffers across calls. Ensure struct
parsefile objects are properly zero initialised when created. Remove
push argument from setinputstring() and simplify logic as it was always
called with a value of one and as was written was potentially dangerous
if ever called with a value of zero.
This commit does not fix long lines when history is enabled but editing
is not (e.g. if there is no terminal).
MFC after: 3 weeks
Pull Request: https://github.com/freebsd/freebsd-src/pull/2028
Signed-off-by: Kristofer Peterson <kris at tranception.com>
tmpfs: Overhaul option handling on remount
On remount, we must accept all the same options as on initial mount.
For parameters which we're unable to modify on the fly, fail only if
the new value is different from the existing one.
PR: 295096
MFC after: 1 week
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D57044
(cherry picked from commit 1cfc208a07b64a64377a4f8fe51c28f588a929cf)
tmpfs: Overhaul option handling on remount
On remount, we must accept all the same options as on initial mount.
For parameters which we're unable to modify on the fly, fail only if
the new value is different from the existing one.
PR: 295096
MFC after: 1 week
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D57044
(cherry picked from commit 1cfc208a07b64a64377a4f8fe51c28f588a929cf)
tcp: Make RFC 6191 support configurable
Add a default-on per-VIMAGE sysctl for RFC 6191 connection recycling.
This makes it possible to merge the change to older branches where it
can be switched off by default to minimize risk.
MFC after: 1 week
Sponsored by: Klara, Inc.
Sponsored by: Modirum MDPay
Reviewed by: pouria, marius.h_lden.org, tuexen
Differential Revision: https://reviews.freebsd.org/D57045
(cherry picked from commit 2af70d7a384934cee497fb6d75678e04f1416287)
tcp: Fix typo in RFC 6191 sysctl
Fixes: 2af70d7a3849 ("tcp: Make RFC 6191 support configurable")
MFC after: 1 week
Sponsored by: Klara, Inc.
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pxeboot: warn and abort on TCP-only NFS server, which doesn't work for pxeboot
When pxeboot gets a 0 as a port number from portmapper (indicating an
error), it currently happily sends NFS packets to the server's port 0
in an endless loop. Change this to instead bail out with a useful
message.
This happens, for example, with recent Linux NFS servers as many
distributions switched to TCP only NFS serving by default. FreeBSD's
pxeboot must have UDP. In this situation pxeboot asks the server's
portmapper for the UDP NFS port and since there is none gets 0.
Also add a hint to the manpage explaining this and how to fix it.
Reviewed by: ziaee, kevans, imp
LinuxKPI: 802.11: add support for suspend/resume
Add support for automatic suspend/resume as we know it for wireless.
The problem is that the PCI driver which would normally gets the code
is the LinuxKPI PCI framework/Linux wireless driver, which we cannot
ammend or generally add extra suspend/resume code to.
A further problem is that with growing support, the LinuxKPI 802.11
(mac80211) layer also is involved in suspend/resume for WoWLAN (not
yet supported) meaning that we need to hook the suspend/resume
framework into that as well. Unlike Linux we do not have a general
suspend/resume "hook" we can hang into and we need to tie this one
to the hardware so cannot indepedently (after the driver one) run it.
The solution for FreeBSD, in order to not mangle the Linux native
drivers and get extra maintanace overhead, is to add a bus child
which inherits the general framework and thus is 2 lines + #includes
for each driver extra to add to.
The general suspend/resume framework lives in LinuxKPI (linuxkpi_80211_pm)
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LinuxKPI: 802.11: reset chanctx when recycling
When we no longer need a channel context and put it back on the
reserved list, zero it for all but the vif so that we get the same
state as if it was freshly allocated.
Sponsored by: The FreeBSD Foundation
Fixes: e62c92c0a5cf, 88cb1e17f471
MFC after: 3 days
netlink: Avoid potential undefined behaviour
Taking the address of an OOB array element is UB, even if not
dereferenced.
Reviewed by: des, bz
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D57172
mfiutil.8/mrsasutil.8: Use Broadcom/LSI consistently
Both tools support controllers from both companies, so document it.
Reviewed by: ziaee (via IRC)
MFC after: immediately
Differential Revision: https://reviews.freebsd.org/D57212
(cherry picked from commit c74645b0c8df1307cb6f13d835012f88883dff3a)
mfiutil.8/mrsasutil.8: Use Broadcom/LSI consistently
Both tools support controllers from both companies, so document it.
Reviewed by: ziaee (via IRC)
MFC after: immediately
Differential Revision: https://reviews.freebsd.org/D57212
(cherry picked from commit c74645b0c8df1307cb6f13d835012f88883dff3a)
mfiutil.8/mrsasutil.8: Use Broadcom/LSI consistently
Both tools support controllers from both companies, so document it.
Reviewed by: ziaee (via IRC)
MFC after: immediately
Differential Revision: https://reviews.freebsd.org/D57212
sh/tests: Cut down builtins/read12.0 by 2 seconds
Since the test assumes a 250 ms response time, there is no need to delay
for 3 seconds. Instead, delay for the minimum possible 1 second.
Also, fix some assertions in builtins/read11.0 and builtins/read12.0. If
`set -e` is in effect, `foo` in `foo && bar` is considered tested and
therefore a failure does not cause the shell to exit.
Reviewed by: bdrewery
Differential Revision: https://reviews.freebsd.org/D55191
netlink: Check for NULL return from npt_alloc()
Reviewed by: glebius, pouria
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D57171
