treewide: refresh kmalloc_obj() conversionsgrafted

This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci

This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.

Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.

Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>

1 files changed, 95 insertions, 0 deletions

diff --git a/Documentation/networking/mac80211-auth-assoc-deauth.txt b/Documentation/networking/mac80211-auth-assoc-deauth.txt
new file mode 100644
index 000000000..d7a15fe91
--- /dev/null
+++ b/Documentation/networking/mac80211-auth-assoc-deauth.txt
@@ -0,0 +1,95 @@
+#
+# This outlines the Linux authentication/association and
+# deauthentication/disassociation flows.
+#
+# This can be converted into a diagram using the service
+# at http://www.websequencediagrams.com/
+#
+
+participant userspace
+participant mac80211
+participant driver
+
+alt authentication needed (not FT)
+userspace->mac80211: authenticate
+
+alt authenticated/authenticating already
+mac80211->driver: sta_state(AP, not-exists)
+mac80211->driver: bss_info_changed(clear BSSID)
+else associated
+note over mac80211,driver
+like deauth/disassoc, without sending the
+BA session stop & deauth/disassoc frames
+end note
+end
+
+mac80211->driver: config(channel, channel type)
+mac80211->driver: bss_info_changed(set BSSID, basic rate bitmap)
+mac80211->driver: sta_state(AP, exists)
+
+alt no probe request data known
+mac80211->driver: TX directed probe request
+driver->mac80211: RX probe response
+end
+
+mac80211->driver: TX auth frame
+driver->mac80211: RX auth frame
+
+alt WEP shared key auth
+mac80211->driver: TX auth frame
+driver->mac80211: RX auth frame
+end
+
+mac80211->driver: sta_state(AP, authenticated)
+mac80211->userspace: RX auth frame
+
+end
+
+userspace->mac80211: associate
+alt authenticated or associated
+note over mac80211,driver: cleanup like for authenticate
+end
+
+alt not previously authenticated (FT)
+mac80211->driver: config(channel, channel type)
+mac80211->driver: bss_info_changed(set BSSID, basic rate bitmap)
+mac80211->driver: sta_state(AP, exists)
+mac80211->driver: sta_state(AP, authenticated)
+end
+mac80211->driver: TX assoc
+driver->mac80211: RX assoc response
+note over mac80211: init rate control
+mac80211->driver: sta_state(AP, associated)
+
+alt not using WPA
+mac80211->driver: sta_state(AP, authorized)
+end
+
+mac80211->driver: set up QoS parameters
+
+mac80211->driver: bss_info_changed(QoS, HT, associated with AID)
+mac80211->userspace: associated
+
+note left of userspace: associated now
+
+alt using WPA
+note over userspace
+do 4-way-handshake
+(data frames)
+end note
+userspace->mac80211: authorized
+mac80211->driver: sta_state(AP, authorized)
+end
+
+userspace->mac80211: deauthenticate/disassociate
+mac80211->driver: stop BA sessions
+mac80211->driver: TX deauth/disassoc
+mac80211->driver: flush frames
+mac80211->driver: sta_state(AP,associated)
+mac80211->driver: sta_state(AP,authenticated)
+mac80211->driver: sta_state(AP,exists)
+mac80211->driver: sta_state(AP,not-exists)
+mac80211->driver: turn off powersave
+mac80211->driver: bss_info_changed(clear BSSID, not associated, no QoS, ...)
+mac80211->driver: config(channel type to non-HT)
+mac80211->userspace: disconnected