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2021-10-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski1-4/+5
include/net/sock.h 7b50ecfcc6cd ("net: Rename ->stream_memory_read to ->sock_is_readable") 4c1e34c0dbff ("vsock: Enable y2038 safe timeval for timeout") drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c 0daa55d033b0 ("octeontx2-af: cn10k: debugfs for dumping LMTST map table") e77bcdd1f639 ("octeontx2-af: Display all enabled PF VF rsrc_alloc entries.") Adjacent code addition in both cases, keep both. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-10-01mac80211: mesh: fix HE operation element length checkJohannes Berg1-4/+5
The length check here was bad, if the length doesn't at least include the length of the fixed part, we cannot call ieee80211_he_oper_size() to determine the total. Fix this, and convert to cfg80211_find_ext_elem() while at it. Cc: stable@vger.kernel.org Fixes: 70debba3ab7d ("mac80211: save HE oper info in BSS config for mesh") Link: https://lore.kernel.org/r/20210930131120.b0f940976c56.I954e1be55e9f87cc303165bff5c906afe1e54648@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-09-23mac80211: always allocate struct ieee802_11_elemsJohannes Berg1-36/+49
As the 802.11 spec evolves, we need to parse more and more elements. This is causing the struct to grow, and we can no longer get away with putting it on the stack. Change the API to always dynamically allocate and return an allocated pointer that must be kfree()d later. As an alternative, I contemplated a scheme whereby we'd say in the code which elements we needed, e.g. DECLARE_ELEMENT_PARSER(elems, SUPPORTED_CHANNELS, CHANNEL_SWITCH, EXT(KEY_DELIVERY)); ieee802_11_parse_elems(..., &elems, ...); and while I think this is possible and will save us a lot since most individual places only care about a small subset of the elements, it ended up being a bit more work since a lot of places do the parsing and then pass the struct to other functions, sometimes with multiple levels. Link: https://lore.kernel.org/r/20210920154009.26caff6b5998.I05ae58768e990e611aee8eca8abefd9d7bc15e05@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-09-23mac80211: mesh: clean up rx_bcn_presp APIJohannes Berg1-2/+2
We currently pass the entire elements to the rx_bcn_presp() method, but only need mesh_config. Additionally, we use the length of the elements to calculate back the entire frame's length, but that's confusing - just pass the length of the frame instead. Link: https://lore.kernel.org/r/20210920154009.a18ed3d2da6c.I1824b773a0fbae4453e1433c184678ca14e8df45@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-11-06mac80211: save HE oper info in BSS config for meshPradeep Kumar Chitrapu1-0/+30
Currently he_support is set only for AP mode. Storing this information for mesh BSS as well helps driver to determine HE support. Also save HE operation element params in BSS conf so that drivers can access this for any configurations instead of having to parse the beacon to fetch that info. Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org> Link: https://lore.kernel.org/r/20201020183111.25458-2-pradeepc@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-08-27mac80211: rename csa counters to countdown countersJohn Crispin1-2/+2
We want to reuse the functions and structs for other counters such as BSS color change. Rename them to more generic names. Signed-off-by: John Crispin <john@phrozen.org> Link: https://lore.kernel.org/r/20200811080107.3615705-2-john@phrozen.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-08-27net: mac80211: mesh.h: delete duplicated wordRandy Dunlap1-1/+1
Drop the repeated word "address". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Johannes Berg <johannes.berg@intel.com> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: linux-wireless@vger.kernel.org Link: https://lore.kernel.org/r/20200822231953.465-3-rdunlap@infradead.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-08-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller1-0/+13
Resolved kernel/bpf/btf.c using instructions from merge commit 69138b34a7248d2396ab85c8652e20c0c39beaba Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-31cfg80211/mac80211: add connected to auth server to meshconfMarkus Theil1-1/+4
Besides information about num of peerings and gate connectivity, the mesh formation byte also contains a flag for authentication server connectivity, that currently cannot be set in the mesh conf. This patch adds this capability, which is necessary to implement 802.1X authentication in mesh mode. Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de> Link: https://lore.kernel.org/r/20200611140238.427461-1-markus.theil@tu-ilmenau.de Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-07-31mac80211: Use fallthrough pseudo-keywordGustavo A. R. Silva1-2/+2
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20200707204548.GA9320@embeddedor Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-07-30mac80211: fix warning in 6 GHz IE addition in mesh modeRajkumar Manoharan1-0/+13
The commit 24a2042cb22f ("mac80211: add HE 6 GHz Band Capability element") failed to check device capability before adding HE 6 GHz capability element. Below warning is reported in 11ac device in mesh. Fix that by checking device capability at HE 6 GHz cap IE addition in mesh beacon and association request. WARNING: CPU: 1 PID: 1897 at net/mac80211/util.c:2878 ieee80211_ie_build_he_6ghz_cap+0x149/0x150 [mac80211] [ 3138.720358] Call Trace: [ 3138.720361] ieee80211_mesh_build_beacon+0x462/0x530 [mac80211] [ 3138.720363] ieee80211_start_mesh+0xa8/0xf0 [mac80211] [ 3138.720365] __cfg80211_join_mesh+0x122/0x3e0 [cfg80211] [ 3138.720368] nl80211_join_mesh+0x3d3/0x510 [cfg80211] Fixes: 24a2042cb22f ("mac80211: add HE 6 GHz Band Capability element") Reported-by: Markus Theil <markus.theil@tu-ilmenau.de> Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Link: https://lore.kernel.org/r/1593656424-18240-1-git-send-email-rmanohar@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: determine chandef from HE 6 GHz operationJohannes Berg1-0/+1
Support connecting to HE 6 GHz APs and mesh networks on 6 GHz, where the HT/VHT information is missing but instead the HE 6 GHz band capability is present, and the 6 GHz Operation information field is used to encode the channel configuration instead of the HT/VHT operation elements. Also add some other bits needed to connect to 6 GHz networks. Link: https://lore.kernel.org/r/1589399105-25472-10-git-send-email-rmanohar@codeaurora.org Co-developed-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Link: https://lore.kernel.org/r/20200528213443.25687d2695bc.I3f9747c1147480f65445f13eda5c4a5ed4e86757@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: avoid using ext NSS high BW if not supportedJohannes Berg1-3/+13
If the AP advertises inconsistent data, namely it has CCFS1 or CCFS2, but doesn't advertise support for 160/80+80 bandwidth or "Extended NSS BW Support", then we cannot use any MCSes in the the higher bandwidth. Thus, avoid connecting with higher bandwidth since it's less efficient that way. Link: https://lore.kernel.org/r/20200528213443.0e55d40c3ccc.I6fd0b4708ebd087e5e46466c3e91f6efbcbef668@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: do not allow HT/VHT IEs in 6 GHz mesh modeRajkumar Manoharan1-0/+16
As HT/VHT elements are not allowed in 6 GHz band, do not include them in mesh beacon template formation. Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Link: https://lore.kernel.org/r/1589399105-25472-9-git-send-email-rmanohar@codeaurora.org Link: https://lore.kernel.org/r/20200528193455.76796-2-johannes@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: build HE operation with 6 GHz oper informationRajkumar Manoharan1-3/+9
Add 6 GHz operation information (IEEE 802.11ax/D6.0, Figure 9-787k) while building HE operation element for non-HE AP. This field is used to determine channel information in the absence of HT/VHT IEs. Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Link: https://lore.kernel.org/r/1589399105-25472-8-git-send-email-rmanohar@codeaurora.org [fix skb allocation size] Link: https://lore.kernel.org/r/20200528193455.76796-1-johannes@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-31mac80211: add HE 6 GHz Band Capability elementRajkumar Manoharan1-0/+9
Construct HE 6 GHz band capability element (IEEE 802.11ax/D6.0, 9.4.2.261) for association request and mesh beacon. The 6 GHz capability information is passed by driver through iftypes caps. Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Link: https://lore.kernel.org/r/1589399105-25472-7-git-send-email-rmanohar@codeaurora.org [handle SMPS, adjust for previous patches, reserve SKB space properly, change to handle SKB directly] Link: https://lore.kernel.org/r/20200528213443.643aa8101111.I3f9747c1147480f65445f13eda5c4a5ed4e86757@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-04-29mac80211: TX legacy rate control for Beacon framesJouni Malinen1-0/+1
Use the Beacon frame specific legacy rate configuration, if specified for AP or mesh, instead of the generic rate mask when selecting the TX rate for Beacon frames. Signed-off-by: Jouni Malinen <jouni@codeaurora.org> Link: https://lore.kernel.org/r/20200425155713.25687-4-jouni@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-04-15mac80211: fix channel switch trigger from unknown mesh peerTamizh chelvam1-4/+7
Previously mesh channel switch happens if beacon contains CSA IE without checking the mesh peer info. Due to that channel switch happens even if the beacon is not from its own mesh peer. Fixing that by checking if the CSA originated from the same mesh network before proceeding for channel switch. Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org> Link: https://lore.kernel.org/r/1585403604-29274-1-git-send-email-tamizhr@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-07-26mac80211: implement HE support for meshSven Eckelmann1-0/+62
Implement the basics required for supporting high efficiency with mesh: include HE information elements in beacons, probe responses, and peering action frames, and check for compatible HE configurations when peering. Signed-off-by: Sven Eckelmann <seckelmann@datto.com> Forwarded: https://patchwork.kernel.org/patch/11029299/ Link: https://lore.kernel.org/r/20190724163359.3507-2-sven@narfation.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-21Merge tag 'spdx-5.2-rc6' of ↵Linus Torvalds1-4/+1
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx Pull still more SPDX updates from Greg KH: "Another round of SPDX updates for 5.2-rc6 Here is what I am guessing is going to be the last "big" SPDX update for 5.2. It contains all of the remaining GPLv2 and GPLv2+ updates that were "easy" to determine by pattern matching. The ones after this are going to be a bit more difficult and the people on the spdx list will be discussing them on a case-by-case basis now. Another 5000+ files are fixed up, so our overall totals are: Files checked: 64545 Files with SPDX: 45529 Compared to the 5.1 kernel which was: Files checked: 63848 Files with SPDX: 22576 This is a huge improvement. Also, we deleted another 20000 lines of boilerplate license crud, always nice to see in a diffstat" * tag 'spdx-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: (65 commits) treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 507 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 506 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 504 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 503 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 502 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 501 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 498 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 497 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 496 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 495 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 491 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 490 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 489 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 488 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 487 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 486 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 485 ...
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-4/+1
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-29mac80211: free peer keys before vif down in meshPradeep Kumar Chitrapu1-0/+1
freeing peer keys after vif down is resulting in peer key uninstall to fail due to interface lookup failure. so fix that. Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-05-28mac80211: mesh: fix RCU warningThomas Pedersen1-1/+4
ifmsh->csa is an RCU-protected pointer. The writer context in ieee80211_mesh_finish_csa() is already mutually exclusive with wdev->sdata.mtx, but the RCU checker did not know this. Use rcu_dereference_protected() to avoid a warning. fixes the following warning: [ 12.519089] ============================= [ 12.520042] WARNING: suspicious RCU usage [ 12.520652] 5.1.0-rc7-wt+ #16 Tainted: G W [ 12.521409] ----------------------------- [ 12.521972] net/mac80211/mesh.c:1223 suspicious rcu_dereference_check() usage! [ 12.522928] other info that might help us debug this: [ 12.523984] rcu_scheduler_active = 2, debug_locks = 1 [ 12.524855] 5 locks held by kworker/u8:2/152: [ 12.525438] #0: 00000000057be08c ((wq_completion)phy0){+.+.}, at: process_one_work+0x1a2/0x620 [ 12.526607] #1: 0000000059c6b07a ((work_completion)(&sdata->csa_finalize_work)){+.+.}, at: process_one_work+0x1a2/0x620 [ 12.528001] #2: 00000000f184ba7d (&wdev->mtx){+.+.}, at: ieee80211_csa_finalize_work+0x2f/0x90 [ 12.529116] #3: 00000000831a1f54 (&local->mtx){+.+.}, at: ieee80211_csa_finalize_work+0x47/0x90 [ 12.530233] #4: 00000000fd06f988 (&local->chanctx_mtx){+.+.}, at: ieee80211_csa_finalize_work+0x51/0x90 Signed-off-by: Thomas Pedersen <thomas@eero.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-08mac80211: pass bssids to elements parsing functionSara Sharon1-4/+6
In multiple BSSID, we have nested IEs inside the multiple BSSID IE, that override the external ones for that specific BSS. As preparation for supporting that, pass 2 BSSIDs to the parse function, the transmitter, and the selected BSSID, so it can know which IEs to choose. If the selected BSSID is NULL, the outer ones will be applied. Change ieee80211_bss_info_update to parse elements itself, instead of receiving them parsed, so we have the relevant bss entry in hand. Signed-off-by: Sara Sharon <sara.sharon@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-11-09{nl,mac}80211: add rssi to mesh candidatesBob Copeland1-1/+2
When peering is in userspace, some implementations may want to control which peers are accepted based on RSSI in addition to the information elements being sent today. Add signal level so that info is available to clients. Signed-off-by: Bob Copeland <bobcopeland@fb.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-11-09{nl,mac}80211: add dot11MeshConnectedToMeshGate to meshconfBob Copeland1-1/+2
When userspace is controlling mesh routing, it may have better knowledge about whether a mesh STA is connected to a mesh gate than the kernel mpath table. Add dot11MeshConnectedToMeshGate to the mesh config so that such applications can explicitly signal that a mesh STA is connected to a gate, which will then be advertised in the beacon. Signed-off-by: Bob Copeland <bobcopeland@fb.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-11-09mac80211: mesh: advertise gates in mesh formationBob Copeland1-1/+3
The Connected to Mesh Gate subfield (802.11-2016 9.4.2.98.7) in the Mesh Formation Info field is currently unset. This field may be useful in determining which MBSSes to join or which mesh STAs to peer with. If this mesh STA is a gate, by having turned on mesh gate announcements, or if we have a path to one (e.g. by having received RANNs) then set this bit to 1. Signed-off-by: Bob Copeland <bobcopeland@fb.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-05mac80211: add ability to parse CCFS2Johannes Berg1-1/+4
With newer VHT implementations, it's necessary to look at the HT operation's CCFS2 field to identify the actual bandwidth used. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-23mac80211: notify driver for change in multicast ratesPradeep Kumar Chitrapu1-1/+2
With drivers implementing rate control in driver or firmware rate_control_send_low() may not get called, and thus the driver needs to know about changes in the multicast rate. Add and use a new BSS change flag for this. Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org> [rewrite commit message] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-02-22Merge tag 'mac80211-for-davem-2018-02-22' of ↵David S. Miller1-11/+6
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes Berg says: ==================== Various fixes across the tree, the shortlog basically says it all: cfg80211: fix cfg80211_beacon_dup -> old bug in this code cfg80211: clear wep keys after disconnection -> certain ways of disconnecting left the keys mac80211: round IEEE80211_TX_STATUS_HEADROOM up to multiple of 4 -> alignment issues with using 14 bytes mac80211: Do not disconnect on invalid operating class -> if the AP has a bogus operating class, let it be mac80211: Fix sending ADDBA response for an ongoing session -> don't send the same frame twice cfg80211: use only 1Mbps for basic rates in mesh -> interop issue with old versions of our code mac80211_hwsim: don't use WQ_MEM_RECLAIM -> it causes splats because it flushes work on a non-reclaim WQ regulatory: add NUL to request alpha2 -> nla_put_string() issue from Kees mac80211: mesh: fix wrong mesh TTL offset calculation -> protocol issue mac80211: fix a possible leak of station stats -> error path might leak memory mac80211: fix calling sleeping function in atomic context -> percpu allocations need to be made with gfp flags ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-31mac80211: mesh: fix wrong mesh TTL offset calculationPeter Oh1-11/+6
mesh TTL offset in Mesh Channel Switch Parameters element depends on not only Secondary Channel Offset element, but also affected by HT Control field and Wide Bandwidth Channel Switch element. So use element structure to manipulate mesh channel swich param IE after removing its constant attribution to correct the miscalculation. Signed-off-by: Peter Oh <peter.oh@bowerswilkins.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-12-11mac80211: mark expected switch fall-throughsGustavo A. R. Silva1-0/+2
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that in some cases I replaced "fall through on else" and "otherwise fall through" comments with just a "fall through" comment, which is what GCC is expecting to find. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-11-20mac80211: Convert timers to use timer_setup()Kees Cook1-15/+12
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Johannes Berg <johannes@sipsolutions.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-09-21mac80211: use offsetofend()Johannes Berg1-2/+1
This was created using the following spatch: @find@ type S; expression M, M2; position p; @@ offsetof(S, M) + sizeof(M2)@p @script:python@ m << find.M; m2 << find.M2; @@ if not m2.endswith('-> ' + m): cocci.include_match(False) @change@ type find.S; expression find.M, find.M2; position find.p; @@ -offsetof(S, M) + sizeof(M2)@p +offsetofend(S, M) Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-06-16networking: make skb_put & friends return void pointersJohannes Berg1-1/+1
It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions (skb_put, __skb_put and pskb_put) return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: introduce and use skb_put_data()Johannes Berg1-4/+4
A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: convert many more places to skb_put_zero()Johannes Berg1-2/+1
There were many places that my previous spatch didn't find, as pointed out by yuan linyu in various patches. The following spatch found many more and also removes the now unnecessary casts: @@ identifier p, p2; expression len; expression skb; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_zero(skb, len); | -p = (t)skb_put(skb, len); +p = skb_put_zero(skb, len); ) ... when != p ( p2 = (t2)p; -memset(p2, 0, len); | -memset(p, 0, len); ) @@ type t, t2; identifier p, p2; expression skb; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_zero(skb, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_zero(skb, sizeof(t)); ) ... when != p ( p2 = (t2)p; -memset(p2, 0, sizeof(*p)); | -memset(p, 0, sizeof(*p)); ) @@ expression skb, len; @@ -memset(skb_put(skb, len), 0, len); +skb_put_zero(skb, len); Apply it to the tree (with one manual fixup to keep the comment in vxlan.c, which spatch removed.) Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-30skbuff/mac80211: introduce and use skb_put_zero()Johannes Berg1-6/+3
This pattern was introduced a number of times in mac80211 just now, and since it's present in a number of other places it makes sense to add a little helper for it. This just adds the helper and transforms the mac80211 code, a later patch will transform other places. Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-05-24mac80211: enable VHT for mesh channel processingSimon Wunderlich1-1/+3
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-05-24mac80211: mesh: support sending wide bandwidth CSASimon Wunderlich1-2/+43
To support HT and VHT CSA, beacons and action frames must include the corresponding IEs. Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> [make ieee80211_ie_build_wide_bw_cs() return void] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-05-19mac80211: mark as action frame when parsing IEs of CSA action framesSimon Wunderlich1-1/+1
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-05-19mac80211: mesh: Allow following CSA to DFS channels if userspace handles itBenjamin Berg1-3/+12
If userspace has flagged support for DFS earlier, then we can follow CSA to DFS channels. So instead of rejecting the switch, allow it to happen if the flag has been set during mesh setup. Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-05-19mac80211: move clearing result into ieee80211_parse_ch_switch_ie()Johannes Berg1-1/+0
Clear the csa_ie in ieee80211_parse_ch_switch_ie() where the data is filled in, rather than in each caller. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-05-19mac80211: mesh: mark channel as unusable if a regulatory MESH CSA is receivedBenjamin Berg1-0/+21
In the Mesh Channel Switch Parameters (8.4.2.105) the reason is specified to WLAN_REASON_MESH_CHAN_REGULATORY in the case that a regulatory limitation was the cause for the switch. This means another station detected a radar event. Mark the channel as unusable if this happens. Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net> [sw: style cleanup, rebase] Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-04-28mac80211: Fix possible sband related NULL pointer de-referenceMohammed Shafi Shajakhan1-9/+20
Existing API 'ieee80211_get_sdata_band' returns default 2 GHz band even if the channel context configuration is NULL. This crashes for chipsets which support 5 Ghz alone when it tries to access members of 'sband'. Channel context configuration can be NULL in multivif case and when channel switch is in progress (or) when it fails. Fix this by replacing the API 'ieee80211_get_sdata_band' with 'ieee80211_get_sband' which returns a NULL pointer for sband when the channel configuration is NULL. An example scenario is as below: In multivif mode (AP + STA) with drivers like ath10k, when we do a channel switch in the AP vif (which has a number of clients connected) and a STA vif which is connected to some other AP, when the channel switch in AP vif fails, while the STA vifs tries to connect to the other AP, there is a window where the channel context is NULL/invalid and this results in a crash while the clients connected to the AP vif tries to reconnect and this race is very similar to the one investigated by Michal in https://patchwork.kernel.org/patch/3788161/ and this does happens with hardware that supports 5Ghz alone after long hours of testing with continuous channel switch on the AP vif ieee80211 phy0: channel context reservation cannot be finalized because some interfaces aren't switching wlan0: failed to finalize CSA, disconnecting wlan0-1: deauthenticating from 8c:fd:f0:01:54:9c by local choice (Reason: 3=DEAUTH_LEAVING) WARNING: CPU: 1 PID: 19032 at net/mac80211/ieee80211_i.h:1013 sta_info_alloc+0x374/0x3fc [mac80211] [<bf77272c>] (sta_info_alloc [mac80211]) [<bf78776c>] (ieee80211_add_station [mac80211])) [<bf73cc50>] (nl80211_new_station [cfg80211]) Unable to handle kernel NULL pointer dereference at virtual address 00000014 pgd = d5f4c000 Internal error: Oops: 17 [#1] PREEMPT SMP ARM PC is at sta_info_alloc+0x380/0x3fc [mac80211] LR is at sta_info_alloc+0x37c/0x3fc [mac80211] [<bf772738>] (sta_info_alloc [mac80211]) [<bf78776c>] (ieee80211_add_station [mac80211]) [<bf73cc50>] (nl80211_new_station [cfg80211])) Cc: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-03-29mac80211: mesh: drop new node with weak powerMasashi Honma1-2/+8
On some practical cases, it is useful to drop new node in the distance. Because mesh metric is calculated with hop count and without RSSI information, a node far from local peer and near to destination node could be used as best path. For example, the nodes are located in linear. Distance of 0 - 1 and 1 - 2 and 2 - 3 is 20meters. 0 to 3 signal is very weak. 0 --- 1 --- 2 --- 3 Though most robust path from 0 to 3 is 0 -> 1 -> 2 -> 3, unfortunately, node 0 could recognize node 3 as neighbor. Then node 3 could be next of node 0. This patch aims to avoid such a case. [Johannes:] Dropping the node entirely isn't ideal, but at least with encryption there will be a limit on # of keys the hardware can deal with, and there might also be a limit on the number of stations it supports. Signed-off-by: Masashi Honma <masashi.honma@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-02-28scripts/spelling.txt: add "swith" pattern and fix typo instancesMasahiro Yamada1-1/+1
Fix typos and add the following to the scripts/spelling.txt: swith||switch swithable||switchable swithed||switched swithing||switching While we are here, fix the "update" to "updates" in the touched hunk in drivers/net/wireless/marvell/mwifiex/wmm.c. Link: http://lkml.kernel.org/r/1481573103-11329-2-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
The conflict was an interaction between a bug fix in the netvsc driver in 'net' and an optimization of the RX path in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-06mac80211: Fix adding of mesh vendor IEsThorsten Horstmann1-1/+1
The function ieee80211_ie_split_vendor doesn't return 0 on errors. Instead it returns any offset < ielen when WLAN_EID_VENDOR_SPECIFIC is found. The return value in mesh_add_vendor_ies must therefore be checked against ifmsh->ie_len and not 0. Otherwise all ifmsh->ie starting with WLAN_EID_VENDOR_SPECIFIC will be rejected. Fixes: 082ebb0c258d ("mac80211: fix mesh beacon format") Signed-off-by: Thorsten Horstmann <thorsten@defutech.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fit.fraunhofer.de> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> [sven@narfation.org: Add commit message] Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-01-02mac80211: Fix addition of mesh configuration elementIlan peer1-2/+0
The code was setting the capabilities byte to zero, after it was already properly set previously. Fix it. The bug was found while debugging hwsim mesh tests failures that happened since the commit mentioned below. Fixes: 76f43b4c0a93 ("mac80211: Remove invalid flag operations in mesh TSF synchronization") Signed-off-by: Ilan Peer <ilan.peer@intel.com> Reviewed-by: Masashi Honma <masashi.honma@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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