#
0528e0fd |
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11-Dec-2023 |
Andrei Otcheretianski <andrei.otcheretianski@intel.com> |
wifi: mac80211: Replace ENOTSUPP with EOPNOTSUPP ENOTSUP isn't a standard error code. EOPNOTSUPP should be used instead. Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Reviewed-by: Gregory Greenman <gregory.greenman@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://msgid.link/20231211085121.3841b71c867d.Idf2ad01d9dfe8d6d6c352bf02deb06e49701ad1d@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
c00de1c4 |
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28-Sep-2023 |
Benjamin Berg <benjamin.berg@intel.com> |
wifi: mac80211: mesh: fix some kdoc warnings These were mostly missing or incorrectly tagged return values. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Signed-off-by: Gregory Greenman <gregory.greenman@intel.com> Link: https://lore.kernel.org/r/20230928172905.33fea2968c62.I41d197b570370ab7cad1405518512fdd36e08717@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
16114496 |
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06-Jun-2023 |
Johannes Berg <johannes.berg@intel.com> |
wifi: mac80211: use wiphy work for sdata->work We'll need this later to convert other works that might be cancelled from here, so convert this one first. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
d5edb9ae |
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14-Mar-2023 |
Felix Fietkau <nbd@nbd.name> |
wifi: mac80211: mesh fast xmit support Previously, fast xmit only worked on interface types where initially a sta lookup is performed, and a cached header can be attached to the sta, requiring only some fields to be updated at runtime. This technique is not directly applicable for a mesh device type due to the dynamic nature of the topology and protocol. There are more addresses that need to be filled, and there is an extra header with a dynamic length based on the addressing mode. Change the code to cache entries contain a copy of the mesh subframe header + bridge tunnel header, as well as an embedded struct ieee80211_fast_tx, which contains the information for building the 802.11 header. Add a mesh specific early fast xmit call, which looks up a cached entry and adds only the mesh subframe header, before passing it over to the generic fast xmit code. To ensure the changes in network are reflected in these cached headers, flush affected cached entries on path changes, as well as other conditions that currently trigger a fast xmit check in other modes (key changes etc.) This code is loosely based on a previous implementation by: Sriram R <quic_srirrama@quicinc.com> Cc: Sriram R <quic_srirrama@quicinc.com> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20230314095956.62085-4-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
38c6aa29 |
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29-Jun-2022 |
Johannes Berg <johannes.berg@intel.com> |
wifi: mac80211: fix multi-BSSID element parsing When parsing a frame containing a multi-BSSID element, we need to know both the transmitted and non-transmitted BSSID so we can parse it correctly. Unfortunately, in quite a number of cases, we got this wrong and were passing the wrong BSSID or useless information: * the mgmt->bssid from a frame is only the transmitted BSSID if the frame is a beacon * passing just one of the parameters as non-NULL isn't useful and ignored In those case where we need to parse for a specific BSS we always have a BSS structure pointer, representing the BSS we need, whether transmitted or not. Thus, pass that pointer to the parsing function instead of the two BSSIDs. Also fix two bugs: * we need to re-parse all the elements for the other BSS when iterating the non-transmitted BSSes in scan * we need to parse for the correct BSS when setting up the channel data in client code Fixes: 78ac51f81532 ("mac80211: support multi-bssid") Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
0bd50932 |
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01-Jul-2022 |
Aditya Kumar Singh <quic_adisi@quicinc.com> |
wifi: mac80211: fix mesh airtime link metric estimating ieee80211s_update_metric function uses sta_set_rate_info_tx function to get struct rate_info data from ieee80211_tx_rate struct, present in ieee80211_sta->deflink.tx_stats. However, drivers can skip tx rate calculation by setting rate idx as -1. Such drivers provides rate_info directly and hence ieee80211s metric is updated incorrectly since ieee80211_tx_rate has inconsistent data. Add fix to use rate_info directly if present instead of sta_set_rate_info_tx for updating ieee80211s metric. Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com> Link: https://lore.kernel.org/r/20220701133611.544-1-quic_adisi@quicinc.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
23a5f0af |
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09-Feb-2022 |
Johannes Berg <johannes.berg@intel.com> |
wifi: mac80211: remove cipher scheme support The only driver using this was iwlwifi, where we just removed the support because it was never really used. Remove the code from mac80211 as well. Change-Id: I1667417a5932315ee9d81f5c233c56a354923f09 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
046d2e7c |
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04-Apr-2022 |
Sriram R <quic_srirrama@quicinc.com> |
mac80211: prepare sta handling for MLO support Currently in mac80211 each STA object is represented using sta_info datastructure with the associated STA specific information and drivers access ieee80211_sta part of it. With MLO (Multi Link Operation) support being added in 802.11be standard, though the association is logically with a single Multi Link capable STA, at the physical level communication can happen via different advertised links (uniquely identified by Channel, operating class, BSSID) and hence the need to handle multiple link STA parameters within a composite sta_info object called the MLD STA. The different link STA part of MLD STA are identified using the link address which can be same or different as the MLD STA address and unique link id based on the link vif. To support extension of such a model, the sta_info datastructure is modified to hold multiple link STA objects with link specific params currently within sta_info moved to this new structure. Similarly this is done for ieee80211_sta as well which will be accessed within mac80211 as well as by drivers, hence trivial driver changes are expected to support this. For current non MLO supported drivers, only one link STA is present and link information is accessed via 'deflink' member. For MLO drivers, we still need to define the APIs etc. to get the correct link ID and access the correct part of the station info. Currently in mac80211, all link STA info are accessed directly via deflink. These will be updated to access via link pointers indexed by link id with MLO support patches, with link id being 0 for non MLO supported cases. Except for couple of macro related changes, below spatch takes care of updating mac80211 and driver code to access to the link STA info via deflink. @ieee80211_sta@ struct ieee80211_sta *s; struct sta_info *si; identifier var = {supp_rates, ht_cap, vht_cap, he_cap, he_6ghz_capa, eht_cap, rx_nss, bandwidth, txpwr}; @@ ( s-> - var + deflink.var | si->sta. - var + deflink.var ) @sta_info@ struct sta_info *si; identifier var = {gtk, pcpu_rx_stats, rx_stats, rx_stats_avg, status_stats, tx_stats, cur_max_bandwidth}; @@ ( si-> - var + deflink.var ) Signed-off-by: Sriram R <quic_srirrama@quicinc.com> Link: https://lore.kernel.org/r/1649086883-13246-1-git-send-email-quic_srirrama@quicinc.com [remove MLO-drivers notes from commit message, not clear yet; run spatch] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
5d24828d |
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20-Sep-2021 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: always allocate struct ieee802_11_elems 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>
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#
ab4040df |
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07-Jun-2021 |
Zheng Yongjun <zhengyongjun3@huawei.com> |
mac80211: fix some spelling mistakes Fix some spelling mistakes in comments: freeed ==> freed addreses ==> addresses containging ==> containing capablity ==> capability sucess ==> success atleast ==> at least Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Link: https://lore.kernel.org/r/20210607150047.2855962-1-zhengyongjun3@huawei.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
6194f7e6 |
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05-Feb-2021 |
Colin Ian King <colin.king@canonical.com> |
mac80211: fix potential overflow when multiplying to u32 integers The multiplication of the u32 variables tx_time and estimated_retx is performed using a 32 bit multiplication and the result is stored in a u64 result. This has a potential u32 overflow issue, so avoid this by casting tx_time to a u64 to force a 64 bit multiply. Addresses-Coverity: ("Unintentional integer overflow") Fixes: 050ac52cbe1f ("mac80211: code for on-demand Hybrid Wireless Mesh Protocol") Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20210205175352.208841-1-colin.king@canonical.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
cc20ff2c |
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08-Sep-2020 |
Felix Fietkau <nbd@nbd.name> |
mac80211: swap NEED_TXPROCESSING and HW_80211_ENCAP tx flags In order to unify the tx status path, the hw 802.11 encapsulation flag needs to survive the trip to the tx status call. Since we don't have any free bits in info->flags, we need to move one. IEEE80211_TX_INTFL_NEED_TXPROCESSING is only used internally in mac80211, and only before the call into the driver. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://lore.kernel.org/r/20200908123702.88454-10-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
e3718a61 |
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17-Jun-2020 |
Linus Lüssing <ll@simonwunderlich.de> |
cfg80211/mac80211: add mesh_param "mesh_nolearn" to skip path discovery Currently, before being able to forward a packet between two 802.11s nodes, both a PLINK handshake is performed upon receiving a beacon and then later a PREQ/PREP exchange for path discovery is performed on demand upon receiving a data frame to forward. When running a mesh protocol on top of an 802.11s interface, like batman-adv, we do not need the multi-hop mesh routing capabilities of 802.11s and usually set mesh_fwding=0. However, even with mesh_fwding=0 the PREQ/PREP path discovery is still performed on demand. Even though in this scenario the next hop PREQ/PREP will determine is always the direct 11s neighbor node. The new mesh_nolearn parameter allows to skip the PREQ/PREP exchange in this scenario, leading to a reduced delay, reduced packet buffering and simplifies HWMP in general. mesh_nolearn is still rather conservative in that if the packet destination is not a direct 11s neighbor, it will fall back to PREQ/PREP path discovery. For normal, multi-hop 802.11s mesh routing it is usually not advisable to enable mesh_nolearn as a transmission to a direct but distant neighbor might be worse than reaching that same node via a more robust / higher throughput etc. multi-hop path. Cc: Sven Eckelmann <sven@narfation.org> Cc: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Linus Lüssing <ll@simonwunderlich.de> Link: https://lore.kernel.org/r/20200617073034.26149-1-linus.luessing@c0d3.blue [fix nl80211 policy to range 0/1 only] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
fc0561dc |
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07-Jul-2020 |
Gustavo A. R. Silva <gustavoars@kernel.org> |
mac80211: Use fallthrough pseudo-keyword 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>
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#
01da2e05 |
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04-Jun-2020 |
Pavel Machek <pavel@ucw.cz> |
mac80211: simplify mesh code Doing mod_timer() conditionaly is easier than conditionally unlocking and jumping around... Signed-off-by: Pavel Machek (CIP) <pavel@denx.de> Acked-by: Linus Lüssing <ll@simonwunderlich.de> Link: https://lore.kernel.org/r/20200604214157.GA9737@amd Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
e2d4a80f |
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22-May-2020 |
Linus Lüssing <ll@simonwunderlich.de> |
mac80211: mesh: fix discovery timer re-arming issue / crash On a non-forwarding 802.11s link between two fairly busy neighboring nodes (iperf with -P 16 at ~850MBit/s TCP; 1733.3 MBit/s VHT-MCS 9 80MHz short GI VHT-NSS 4), so with frequent PREQ retries, usually after around 30-40 seconds the following crash would occur: [ 1110.822428] Unable to handle kernel read from unreadable memory at virtual address 00000000 [ 1110.830786] Mem abort info: [ 1110.833573] Exception class = IABT (current EL), IL = 32 bits [ 1110.839494] SET = 0, FnV = 0 [ 1110.842546] EA = 0, S1PTW = 0 [ 1110.845678] user pgtable: 4k pages, 48-bit VAs, pgd = ffff800076386000 [ 1110.852204] [0000000000000000] *pgd=00000000f6322003, *pud=00000000f62de003, *pmd=0000000000000000 [ 1110.861167] Internal error: Oops: 86000004 [#1] PREEMPT SMP [ 1110.866730] Modules linked in: pppoe ppp_async batman_adv ath10k_pci ath10k_core ath pppox ppp_generic nf_conntrack_ipv6 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_FLOWOFFLOAD slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack iptable_mangle iptable_filter ip_tables crc_ccitt compat nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 usb_storage xhci_plat_hcd xhci_pci xhci_hcd dwc3 usbcore usb_common [ 1110.932190] Process swapper/3 (pid: 0, stack limit = 0xffff0000090c8000) [ 1110.938884] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.14.162 #0 [ 1110.944965] Hardware name: LS1043A RGW Board (DT) [ 1110.949658] task: ffff8000787a81c0 task.stack: ffff0000090c8000 [ 1110.955568] PC is at 0x0 [ 1110.958097] LR is at call_timer_fn.isra.27+0x24/0x78 [ 1110.963055] pc : [<0000000000000000>] lr : [<ffff0000080ff29c>] pstate: 00400145 [ 1110.970440] sp : ffff00000801be10 [ 1110.973744] x29: ffff00000801be10 x28: ffff000008bf7018 [ 1110.979047] x27: ffff000008bf87c8 x26: ffff000008c160c0 [ 1110.984352] x25: 0000000000000000 x24: 0000000000000000 [ 1110.989657] x23: dead000000000200 x22: 0000000000000000 [ 1110.994959] x21: 0000000000000000 x20: 0000000000000101 [ 1111.000262] x19: ffff8000787a81c0 x18: 0000000000000000 [ 1111.005565] x17: ffff0000089167b0 x16: 0000000000000058 [ 1111.010868] x15: ffff0000089167b0 x14: 0000000000000000 [ 1111.016172] x13: ffff000008916788 x12: 0000000000000040 [ 1111.021475] x11: ffff80007fda9af0 x10: 0000000000000001 [ 1111.026777] x9 : ffff00000801bea0 x8 : 0000000000000004 [ 1111.032080] x7 : 0000000000000000 x6 : ffff80007fda9aa8 [ 1111.037383] x5 : ffff00000801bea0 x4 : 0000000000000010 [ 1111.042685] x3 : ffff00000801be98 x2 : 0000000000000614 [ 1111.047988] x1 : 0000000000000000 x0 : 0000000000000000 [ 1111.053290] Call trace: [ 1111.055728] Exception stack(0xffff00000801bcd0 to 0xffff00000801be10) [ 1111.062158] bcc0: 0000000000000000 0000000000000000 [ 1111.069978] bce0: 0000000000000614 ffff00000801be98 0000000000000010 ffff00000801bea0 [ 1111.077798] bd00: ffff80007fda9aa8 0000000000000000 0000000000000004 ffff00000801bea0 [ 1111.085618] bd20: 0000000000000001 ffff80007fda9af0 0000000000000040 ffff000008916788 [ 1111.093437] bd40: 0000000000000000 ffff0000089167b0 0000000000000058 ffff0000089167b0 [ 1111.101256] bd60: 0000000000000000 ffff8000787a81c0 0000000000000101 0000000000000000 [ 1111.109075] bd80: 0000000000000000 dead000000000200 0000000000000000 0000000000000000 [ 1111.116895] bda0: ffff000008c160c0 ffff000008bf87c8 ffff000008bf7018 ffff00000801be10 [ 1111.124715] bdc0: ffff0000080ff29c ffff00000801be10 0000000000000000 0000000000400145 [ 1111.132534] bde0: ffff8000787a81c0 ffff00000801bde8 0000ffffffffffff 000001029eb19be8 [ 1111.140353] be00: ffff00000801be10 0000000000000000 [ 1111.145220] [< (null)>] (null) [ 1111.149917] [<ffff0000080ff77c>] run_timer_softirq+0x184/0x398 [ 1111.155741] [<ffff000008081938>] __do_softirq+0x100/0x1fc [ 1111.161130] [<ffff0000080a2e28>] irq_exit+0x80/0xd8 [ 1111.166002] [<ffff0000080ea708>] __handle_domain_irq+0x88/0xb0 [ 1111.171825] [<ffff000008081678>] gic_handle_irq+0x68/0xb0 [ 1111.177213] Exception stack(0xffff0000090cbe30 to 0xffff0000090cbf70) [ 1111.183642] be20: 0000000000000020 0000000000000000 [ 1111.191461] be40: 0000000000000001 0000000000000000 00008000771af000 0000000000000000 [ 1111.199281] be60: ffff000008c95180 0000000000000000 ffff000008c19360 ffff0000090cbef0 [ 1111.207101] be80: 0000000000000810 0000000000000400 0000000000000098 ffff000000000000 [ 1111.214920] bea0: 0000000000000001 ffff0000089167b0 0000000000000000 ffff0000089167b0 [ 1111.222740] bec0: 0000000000000000 ffff000008c198e8 ffff000008bf7018 ffff000008c19000 [ 1111.230559] bee0: 0000000000000000 0000000000000000 ffff8000787a81c0 ffff000008018000 [ 1111.238380] bf00: ffff00000801c000 ffff00000913ba34 ffff8000787a81c0 ffff0000090cbf70 [ 1111.246199] bf20: ffff0000080857cc ffff0000090cbf70 ffff0000080857d0 0000000000400145 [ 1111.254020] bf40: ffff000008018000 ffff00000801c000 ffffffffffffffff ffff0000080fa574 [ 1111.261838] bf60: ffff0000090cbf70 ffff0000080857d0 [ 1111.266706] [<ffff0000080832e8>] el1_irq+0xe8/0x18c [ 1111.271576] [<ffff0000080857d0>] arch_cpu_idle+0x10/0x18 [ 1111.276880] [<ffff0000080d7de4>] do_idle+0xec/0x1b8 [ 1111.281748] [<ffff0000080d8020>] cpu_startup_entry+0x20/0x28 [ 1111.287399] [<ffff00000808f81c>] secondary_start_kernel+0x104/0x110 [ 1111.293662] Code: bad PC value [ 1111.296710] ---[ end trace 555b6ca4363c3edd ]--- [ 1111.301318] Kernel panic - not syncing: Fatal exception in interrupt [ 1111.307661] SMP: stopping secondary CPUs [ 1111.311574] Kernel Offset: disabled [ 1111.315053] CPU features: 0x0002000 [ 1111.318530] Memory Limit: none [ 1111.321575] Rebooting in 3 seconds.. With some added debug output / delays we were able to push the crash from the timer callback runner into the callback function and by that shedding some light on which object holding the timer gets corrupted: [ 401.720899] Unable to handle kernel read from unreadable memory at virtual address 00000868 [...] [ 402.335836] [<ffff0000088fafa4>] _raw_spin_lock_bh+0x14/0x48 [ 402.341548] [<ffff000000dbe684>] mesh_path_timer+0x10c/0x248 [mac80211] [ 402.348154] [<ffff0000080ff29c>] call_timer_fn.isra.27+0x24/0x78 [ 402.354150] [<ffff0000080ff77c>] run_timer_softirq+0x184/0x398 [ 402.359974] [<ffff000008081938>] __do_softirq+0x100/0x1fc [ 402.365362] [<ffff0000080a2e28>] irq_exit+0x80/0xd8 [ 402.370231] [<ffff0000080ea708>] __handle_domain_irq+0x88/0xb0 [ 402.376053] [<ffff000008081678>] gic_handle_irq+0x68/0xb0 The issue happens due to the following sequence of events: 1) mesh_path_start_discovery(): -> spin_unlock_bh(&mpath->state_lock) before mesh_path_sel_frame_tx() 2) mesh_path_free_rcu() -> del_timer_sync(&mpath->timer) [...] -> kfree_rcu(mpath) 3) mesh_path_start_discovery(): -> mod_timer(&mpath->timer, ...) [...] -> rcu_read_unlock() 4) mesh_path_free_rcu()'s kfree_rcu(): -> kfree(mpath) 5) mesh_path_timer() starts after timeout, using freed mpath object So a use-after-free issue due to a timer re-arming bug caused by an early spin-unlocking. This patch fixes this issue by re-checking if mpath is about to be free'd and if so bails out of re-arming the timer. Cc: stable@vger.kernel.org Fixes: 050ac52cbe1f ("mac80211: code for on-demand Hybrid Wireless Mesh Protocol") Cc: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Linus Lüssing <ll@simonwunderlich.de> Link: https://lore.kernel.org/r/20200522170413.14973-1-linus.luessing@c0d3.blue Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
ba32679c |
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05-Mar-2020 |
Nicolas Cavallari <nicolas.cavallari@green-communications.fr> |
mac80211: Do not send mesh HWMP PREQ if HWMP is disabled When trying to transmit to an unknown destination, the mesh code would unconditionally transmit a HWMP PREQ even if HWMP is not the current path selection algorithm. Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr> Link: https://lore.kernel.org/r/20200305140409.12204-1-cavallar@lri.fr Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
02a61449 |
|
03-Dec-2019 |
Markus Theil <markus.theil@tu-ilmenau.de> |
mac80211: mesh: restrict airtime metric to peered established plinks The following warning is triggered every time an unestablished mesh peer gets dumped. Checks if a peer link is established before retrieving the airtime link metric. [ 9563.022567] WARNING: CPU: 0 PID: 6287 at net/mac80211/mesh_hwmp.c:345 airtime_link_metric_get+0xa2/0xb0 [mac80211] [ 9563.022697] Hardware name: PC Engines apu2/apu2, BIOS v4.10.0.3 [ 9563.022756] RIP: 0010:airtime_link_metric_get+0xa2/0xb0 [mac80211] [ 9563.022838] Call Trace: [ 9563.022897] sta_set_sinfo+0x936/0xa10 [mac80211] [ 9563.022964] ieee80211_dump_station+0x6d/0x90 [mac80211] [ 9563.023062] nl80211_dump_station+0x154/0x2a0 [cfg80211] [ 9563.023120] netlink_dump+0x17b/0x370 [ 9563.023130] netlink_recvmsg+0x2a4/0x480 [ 9563.023140] ____sys_recvmsg+0xa6/0x160 [ 9563.023154] ___sys_recvmsg+0x93/0xe0 [ 9563.023169] __sys_recvmsg+0x7e/0xd0 [ 9563.023210] do_syscall_64+0x4e/0x140 [ 9563.023217] entry_SYSCALL_64_after_hwframe+0x44/0xa9 Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de> Link: https://lore.kernel.org/r/20191203180644.70653-1-markus.theil@tu-ilmenau.de [rewrite commit message] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
d2912cb1 |
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04-Jun-2019 |
Thomas Gleixner <tglx@linutronix.de> |
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 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>
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8828f81a |
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11-Apr-2019 |
Rajkumar Manoharan <rmanohar@codeaurora.org> |
mac80211: probe unexercised mesh links The requirement for mesh link metric refreshing, is that from one mesh point we be able to send some data frames to other mesh points which are not currently selected as a primary traffic path, but which are only 1 hop away. The absence of the primary path to the chosen node makes it necessary to apply some form of marking on a chosen packet stream so that the packets can be properly steered to the selected node for testing, and not by the regular mesh path lookup. Tested-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org> Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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ef618b1b |
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16-Mar-2019 |
Felix Fietkau <nbd@nbd.name> |
mac80211: mesh: drop redundant rcu_read_lock/unlock calls The callers of these functions are all within RCU locked sections Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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ab60633c |
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07-Feb-2019 |
Narayanraddi Masti <team.nmasti@gmail.com> |
mac80211: Add support for NL80211_STA_INFO_AIRTIME_LINK_METRIC Add support for mesh airtime link metric attribute NL80211_STA_INFO_AIRTIME_LINK_METRIC. Signed-off-by: Narayanraddi Masti <team.nmasti@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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4abb52a4 |
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15-Jan-2019 |
Sara Sharon <sara.sharon@intel.com> |
mac80211: pass bssids to elements parsing function 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>
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a8d418d9 |
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15-Jan-2019 |
Julan Hsu <julanhsu@google.com> |
mac80211: mesh: only switch path when new metric is at least 10% better This helps to reduce frequent path switches when multiple path candidates have the same or very similar path metrics. Signed-off-by: Julan Hsu <julanhsu@google.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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67fc0554 |
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15-Jan-2019 |
Julan Hsu <julanhsu@google.com> |
mac80211: mesh: use average bitrate for link metric calculation Use bitrate moving average to smooth out link metric and stablize path selection. Signed-off-by: Julan Hsu <julanhsu@google.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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540bbcb9 |
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15-Jan-2019 |
Julan Hsu <julanhsu@google.com> |
nl80211/mac80211: mesh: add mesh path change count to mpath info Expose path change count to destination in mpath info Signed-off-by: Julan Hsu <julanhsu@google.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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cc241636 |
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15-Jan-2019 |
Julan Hsu <julanhsu@google.com> |
nl80211/mac80211: mesh: add hop count to mpath info Expose hop count to destination information in mpath info Signed-off-by: Julan Hsu <julanhsu@google.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
c4205510 |
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06-Sep-2018 |
Yuan-Chi Pang <fu3mo6goo@gmail.com> |
mac80211: fix TX status reporting for ieee80211s TX status reporting to ieee80211s is through ieee80211s_update_metric. There are two problems about ieee80211s_update_metric: 1. The purpose is to estimate the fail probability to a specific link. No need to restrict to data frame. 2. Current implementation does not work if wireless driver does not pass tx_status with skb. Fix this by removing ieee80211_is_data condition, passing ieee80211_tx_status directly to ieee80211s_update_metric, and putting it in both __ieee80211_tx_status and ieee80211_tx_status_ext. Signed-off-by: Yuan-Chi Pang <fu3mo6goo@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
1f631c32 |
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28-Aug-2018 |
Yuan-Chi Pang <fu3mo6goo@gmail.com> |
mac80211: mesh: fix HWMP sequence numbering to follow standard IEEE 802.11-2016 14.10.8.3 HWMP sequence numbering says: If it is a target mesh STA, it shall update its own HWMP SN to maximum (current HWMP SN, target HWMP SN in the PREQ element) + 1 immediately before it generates a PREP element in response to a PREQ element. Signed-off-by: Yuan-Chi Pang <fu3mo6goo@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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02049ce2 |
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17-Oct-2017 |
Gustavo A. R. Silva <garsilva@embeddedor.com> |
mac80211: mark expected switch fall-throughs 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>
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fbbdad5e |
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14-Nov-2017 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: fix the update of path metric for RANN frame The previous path metric update from RANN frame has not considered the own link metric toward the transmitting mesh STA. Fix this. Reported-by: Michael65535 Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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34f11cd3 |
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16-Oct-2017 |
Kees Cook <keescook@chromium.org> |
mac80211: Convert timers to use timer_setup() 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>
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4c121fd6 |
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08-Sep-2017 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: use offsetofend() 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>
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b080db58 |
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16-Jun-2017 |
Johannes Berg <johannes.berg@intel.com> |
networking: convert many more places to skb_put_zero() 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>
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fe56c9c1 |
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15-Feb-2017 |
Manoharan, Rajkumar <rmanohar@qca.qualcomm.com> |
mac80211: fix mesh fail_avg check Mesh failure average never be more than 100. Only in case of fixed path, average will be more than threshold limit (95%). With recent EWMA changes it may go upto 99 as it is scaled to 100. It make sense to return maximum metric when average is greater than threshold limit. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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3eb0928f |
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14-Feb-2017 |
Manoharan, Rajkumar <rmanohar@qca.qualcomm.com> |
mac80211: use DECLARE_EWMA for mesh_fail_avg As moving average is not considering fractional part, it will get stuck at the same level after certain state. For example, with current values, it can get stuck at 96. Fortunately the current threshold 95%, but if it were increased to 96 or more mesh paths would never be deactivated. Fix failure average movement by using EWMA helpers, which does take into account fractional parts. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> [johannes: pick a larger EWMA factor for more precision with the limited range that we will feed into it, adjust to new API] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
5df20f21 |
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06-Sep-2016 |
Pedersen, Thomas <twp@qca.qualcomm.com> |
mac80211: make mpath path fixing more robust A fixed mpath was not quite being treated as such: 1) if a PERR frame was received, a fixed mpath was deactivated. 2) queued path discovery for fixed mpath was potentially being considered, changing mpath state. 3) other mpath flags were potentially being inherited when fixing the mpath. Just assign PATH_FIXED and SN_VALID. This solves several issues when fixing a mesh path in one direction. The reverse direction mpath should probably also be fixed, or root announcements at least be enabled. Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
3b17fbf8 |
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11-Jul-2016 |
Maxim Altshul <maxim.altshul@ti.com> |
mac80211: mesh: Add support for HW RC implementation Mesh HWMP module will be able to rely on the HW RC algorithm if it exists, for path metric calculations. This allows the metric calculation mechanism to calculate a correct metric, based on PER and last TX rate both via HW RC algorithm if it exists or via parameters collected by the SW. Signed-off-by: Maxim Altshul <maxim.altshul@ti.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
b4201cc4 |
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04-Apr-2016 |
Jeff Mahoney <jeffm@suse.com> |
mac80211: fix "warning: ‘target_metric’ may be used uninitialized" This fixes: net/mac80211/mesh_hwmp.c:603:26: warning: ‘target_metric’ may be used uninitialized in this function target_metric is only consumed when reply = true so no bug exists here, but not all versions of gcc realize it. Initialize to 0 to remove the warning. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
74932959 |
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18-Mar-2016 |
Bob Copeland <me@bobcopeland.com> |
mac80211: mesh: fix crash in mesh_path_timer The mesh_path_reclaim() function, called from an rcu callback, cancels the mesh_path_timer associated with a mesh path. Unfortunately, this call can happen much later, perhaps after the hash table itself is destroyed. Such a situation led to the following crash in mesh_path_send_to_gates() when dereferencing the tbl pointer: [ 23.901661] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 [ 23.905516] IP: [<ffffffff814c910b>] mesh_path_send_to_gates+0x2b/0x740 [ 23.908757] PGD 99ca067 PUD 99c4067 PMD 0 [ 23.910789] Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC [ 23.913485] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.5.0-rc6-wt+ #43 [ 23.916675] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 23.920471] task: ffffffff81685500 ti: ffffffff81678000 task.ti: ffffffff81678000 [ 23.922619] RIP: 0010:[<ffffffff814c910b>] [<ffffffff814c910b>] mesh_path_send_to_gates+0x2b/0x740 [ 23.925237] RSP: 0018:ffff88000b403d30 EFLAGS: 00010286 [ 23.926739] RAX: 0000000000000000 RBX: ffff880009bc0d20 RCX: 0000000000000102 [ 23.928796] RDX: 000000000000002e RSI: 0000000000000001 RDI: ffff880009bc0d20 [ 23.930895] RBP: ffff88000b403e18 R08: 0000000000000001 R09: 0000000000000001 [ 23.932917] R10: 0000000000000000 R11: 0000000000000001 R12: ffff880009c20940 [ 23.936370] R13: ffff880009bc0e70 R14: ffff880009c21c40 R15: ffff880009bc0d20 [ 23.939823] FS: 0000000000000000(0000) GS:ffff88000b400000(0000) knlGS:0000000000000000 [ 23.943688] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 23.946429] CR2: 0000000000000008 CR3: 00000000099c5000 CR4: 00000000000006b0 [ 23.949861] Stack: [ 23.950840] 000000000000002e ffff880009c20940 ffff88000b403da8 ffffffff8109e551 [ 23.954467] ffffffff82711be2 000000000000002e 0000000000000000 ffffffff8166a5f5 [ 23.958141] 0000000000685ce8 0000000000000246 ffff880009bc0d20 ffff880009c20940 [ 23.961801] Call Trace: [ 23.962987] <IRQ> [ 23.963963] [<ffffffff8109e551>] ? vprintk_emit+0x351/0x5e0 [ 23.966782] [<ffffffff8109e8ff>] ? vprintk_default+0x1f/0x30 [ 23.969529] [<ffffffff810ffa41>] ? printk+0x48/0x50 [ 23.971956] [<ffffffff814ceef3>] mesh_path_timer+0x133/0x160 [ 23.974707] [<ffffffff814cedc0>] ? mesh_nexthop_resolve+0x230/0x230 [ 23.977775] [<ffffffff810b04ee>] call_timer_fn+0xce/0x330 [ 23.980448] [<ffffffff810b0425>] ? call_timer_fn+0x5/0x330 [ 23.983126] [<ffffffff814cedc0>] ? mesh_nexthop_resolve+0x230/0x230 [ 23.986091] [<ffffffff810b097c>] run_timer_softirq+0x22c/0x390 Instead of cancelling in the RCU callback, set a new flag to prevent the timer from being rearmed, and then cancel the timer synchronously when freeing the mesh path. This leaves mesh_path_reclaim() doing nothing but kfree, so switch to kfree_rcu(). Fixes: 3b302ada7f0a ("mac80211: mesh: move path tables into if_mesh") Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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d57a544d |
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02-Mar-2016 |
Zhang Shengju <zhangshengju@cmss.chinamobile.com> |
mac80211: use reset to set header pointer Since offset is zero, it's not necessary to use set function. Reset function is straightforward, and will remove the unnecessary add operation in set function. Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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e5a9f8d0 |
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16-Oct-2015 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: move station statistics into sub-structs Group station statistics by where they're (mostly) updated (TX, RX and TX-status) and group them into sub-structs of the struct sta_info. Also rename the variables since the grouping now makes it obvious where they belong. This makes it easier to identify where the statistics are updated in the code, and thus easier to think about them. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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a76d5e0a |
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18-Jun-2015 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: mesh: move fail_avg into mesh struct This value is only used in mesh, so move it into the new mesh sub-struct of the station info. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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932e628d |
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14-Jun-2015 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: mesh process the target only subfield for mesh hwmp This patch does the following: - Remove unnecessary flags field used by PERR element - Use the per target flags defined in <linux/ieee80211.h> - Process the target only subfield based on case E2 of IEEE802.11-2012 13.10.9.3 Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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d8f0300a |
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12-Jun-2015 |
Jesse Jones <jjones@cococorp.com> |
mac80211: mac80211: Check SN for deactivated mpaths When processing a PREQ or PREP it's critical to use the incoming SN. If that is improperly done routing loops and other types of badness can happen. But the code was always processing path messages for deactivated paths. This path fixes that so that if we have a valid SN then we use it to verify that it is a message we can accept. For reference the relevant section of the standard is 13.10.8.4 which doesn't address the deactivated path case at all. I also included a special case for when our peer reboots or restarts networking. This is an important case because without it there can be a very long delay before we accept path messages from that peer. It's also a simple case and intimately associated with processing messages for deactivated paths so I used one patch instead of two. Signed-off-by: Alexis Green <agreen@cococorp.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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d8254710 |
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12-Jun-2015 |
Jesse Jones <jjones@cococorp.com> |
mac80211: mesh: don't invalidate SN on discovery failure The 2012 spec mentions that path SNs can be invalid when created (see section 13.10.8.4 table 13-9) but AFAICT never talks about invalidating SNs. Which makes sense: if we have figured out the path to a target at a certain SN then we want to remember that fact. Failing to do so can lead to routing loops because if we don't have a valid SN then we have no way of knowing whether an incoming path message leads to or away from the target. However currently when discovery fails we zero out mpath->flags which clears MESH_PATH_SN_VALID. This patch fixes that so that only the discovery relevant flags are cleared. Signed-off-by: Alexis Green <agreen@cococorp.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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703ee73a |
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10-Jun-2015 |
Alexis Green <agreen@cococorp.com> |
mac80211: mesh: add missing case to PERR processing When the nexthop is unable to resolve its own nexthop it will send back a PERR with a zero target_sn. According to section 13.10.11.4.3 step b in the 2012 standard that perr should be forwarded and the associated mpath->sn should be incremented. Neither one of those was happening which is rather bad because the originator was not told that packets are black holing. Signed-off-by: Alexis Green <agreen@cococorp.com> CC: Jesse Jones <jjones@cococorp.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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433f5bc1 |
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17-Jun-2015 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: move mesh related station fields to own struct There are now a fairly large number of mesh fields that really aren't needed in any other modes; move those into their own structure and allocate them separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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5ec596c4 |
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09-Jun-2015 |
Alexis Green <agreen@cococorp.com> |
mac80211: Fix a case of incorrect metric used when forwarding a PREQ This patch fixes a bug in hwmp_preq_frame_process where the wrong metric can be used when forwarding a PREQ. This happens because the code uses the same metric variable to record the value of the metric to the source of the PREQ and the value of the metric to the target of the PREQ. This comes into play when both reply and forward are set which happens when IEEE80211_PREQ_PROACTIVE_PREP_FLAG is set and when MP_F_DO | MP_F_RF is set. The original code had a special case to handle the first case but not the second. The patch uses distinct variables for the two metrics which makes the code flow much clearer and removes the need to restore the original value of metric when forwarding. Signed-off-by: Alexis Green <agreen@cococorp.com> CC: Jesse Jones <jjones@cococorp.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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afd2efb9 |
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05-Jun-2015 |
Alexis Green <agreen@cococorp.com> |
mac80211: Fix incorrectly named last_hop_metric variable in mesh_rx_path_sel_frame The last hop metric should refer to link cost (this is how hwmp_route_info_get uses it for example). But in mesh_rx_path_sel_frame we are not dealing with link cost but with the total cost to the origin of a PREQ or PREP. Signed-off-by: Alexis Green <agreen@cococorp.com> CC: Jesse Jones <jjones@cococorp.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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be45dff2 |
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14-Jul-2014 |
Fabian Frederick <fabf@skynet.be> |
mac80211: remove unnecessary break after return Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: David S. Miller <davem@davemloft.net>
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bc3ce0b0 |
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15-Apr-2014 |
Bob Copeland <me@bobcopeland.com> |
mac80211: mesh: always use the latest target_sn When a path target responds to a path request, its response always contains the most up-to-date information; accordingly, it should use the latest target_sn, regardless of net_traversal_jiffies(). Otherwise, only the first path response is considered when constructing a path, as it will have the highest target_sn of all replies during that period. Signed-off-by: Bob Copeland <bob@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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aee6499c |
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15-Apr-2014 |
Bob Copeland <me@bobcopeland.com> |
mac80211: mesh: use u16 return type for u16 getter u16_field_get() is a simple wrapper around get_unaligned_le16(), and it is being assigned to a u16, so there's no need to promote to u32 in the middle. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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f63f8421 |
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13-Nov-2013 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: use put_unaligned_le in mesh when necessary Use put_unaligned_le16 and put_unaligned_le32 for mesh_path_error_tx and mesh_path_sel_frame_tx. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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2475b1cc |
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24-Mar-2013 |
Max Stepanov <Max.Stepanov@intel.com> |
mac80211: add generic cipher scheme support This adds generic cipher scheme support to mac80211, such schemes are fully under control by the driver. On hw registration drivers may specify additional HW ciphers with a scheme how these ciphers have to be handled by mac80211 TX/RR. A cipher scheme specifies a cipher suite value, a size of the security header to be added to or stripped from frames and how the PN is to be verified on RX. Signed-off-by: Max Stepanov <Max.Stepanov@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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b2e506bf |
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26-Mar-2013 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: parse VHT channel switch IEs VHT introduces multiple IEs that need to be parsed for a wide bandwidth channel switch. Two are (currently) needed in mac80211: * wide bandwidth channel switch element * channel switch wrapper element The former is contained in the latter for beacons and probe responses, but not for the spectrum management action frames so the IE parser needs a new argument to differentiate them. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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ae76eef0 |
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29-Mar-2013 |
Bob Copeland <me@bobcopeland.com> |
mac80211: return new mpath from mesh_path_add() Most times that mesh_path_add() is called, it is followed by a lookup to get the just-added mpath. We can instead just return the new mpath in the case that we allocated one (or the existing one if already there), so do that. Also, reorder the code in mesh_path_add a bit so that we don't need to allocate in the pre-existing case. Signed-off-by: Bob Copeland <bob@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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0f71651f |
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03-Apr-2013 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: fix the PREP mesh hwmp debug message The mesh hwmp debug message is a bit confusing. The "sending PREP to %p" should be the MAC address of mesh STA that has originated the PREQ message and the "received PREP from %pM" should be the MAC address of the mesh STA that has originated the PREP message. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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bf7cd94d |
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15-Feb-2013 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: clean up mesh code There's various code with strange indentation, questionable loop and locking constructs, etc. The bigger change is moving the "sdata" argument to the first argument of all functions, like all other mac80211 functions that have one. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
4a3cb702 |
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12-Feb-2013 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: constify IE parsing Make all the parsed IE pointers const, and propagate the change to all the users etc. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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#
3f52b7e3 |
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30-Jan-2013 |
Marco Porsch <marco@cozybit.com> |
mac80211: mesh power save basics Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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8680451f |
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08-Jan-2013 |
Bob Copeland <me@bobcopeland.com> |
mac80211: add encrypt headroom to PERR frames Mesh PERR action frames are robust and thus may be encrypted, so add proper head/tailroom to allow this. Fixes this warning when operating a Mesh STA on ath5k: WARNING: at net/mac80211/wpa.c:427 ccmp_encrypt_skb.isra.5+0x7b/0x1a0 [mac80211]() Call Trace: [<c011c5e7>] warn_slowpath_common+0x63/0x78 [<c011c60b>] warn_slowpath_null+0xf/0x13 [<e090621d>] ccmp_encrypt_skb.isra.5+0x7b/0x1a0 [mac80211] [<e090685c>] ieee80211_crypto_ccmp_encrypt+0x1f/0x37 [mac80211] [<e0917113>] invoke_tx_handlers+0xcad/0x10bd [mac80211] [<e0917665>] ieee80211_tx+0x87/0xb3 [mac80211] [<e0918932>] ieee80211_tx_pending+0xcc/0x170 [mac80211] [<c0121c43>] tasklet_action+0x3e/0x65 Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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9cbbffe2 |
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08-Jan-2013 |
Bob Copeland <me@bobcopeland.com> |
mac80211: set NEED_TXPROCESSING for PERR frames A user reported warnings in ath5k due to transmitting frames with no rates set up. The frames were Mesh PERR frames, and some debugging showed an empty control block with just the vif pointer: > [ 562.522682] XXX txinfo: 00000000: 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 ................ > [ 562.522688] XXX txinfo: 00000010: 00 00 00 00 00 00 00 00 54 b8 f2 > db 00 00 00 00 ........T....... > [ 562.522693] XXX txinfo: 00000020: 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 00 00 ................ Set the IEEE80211_TX_INTFL_NEED_TXPROCESSING flag to ensure that rate control gets run before the frame is sent. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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75ea719c |
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02-Jan-2013 |
Bob Copeland <me@bobcopeland.com> |
mac80211: fix mesh_hwmp kerneldoc One of the function names was wrong and some parameters were missing. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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4bd4c2dd |
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09-Aug-2012 |
Thomas Pedersen <thomas@cozybit.com> |
mac80211: clean up mpath_move_to_queue() Use skb_queue_walk_safe instead, and fix a few issues: - didn't free old skbs on moving - didn't react to failed skb alloc - needlessly held a local pointer to the destination frame queue - didn't check destination queue length before adding skb Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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2c53040f |
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10-Jul-2012 |
Ben Hutchings <bhutchings@solarflare.com> |
net: Fix (nearly-)kernel-doc comments for various functions Fix incorrect start markers, wrapped summary lines, missing section breaks, incorrect separators, and some name mismatches. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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bdcbd8e0 |
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22-Jun-2012 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: clean up debugging There are a few things that make the logging and debugging in mac80211 less useful than it should be right now: * a lot of messages should be pr_info, not pr_debug * wholesale use of pr_debug makes it require *both* Kconfig and dynamic configuration * there are still a lot of ifdefs * the style is very inconsistent, sometimes the sdata->name is printed in front Clean up everything, introducing new macros and separating out the station MLME debugging into a new Kconfig symbol. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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7ebfa469 |
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14-Jun-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: fix and improve mesh RANN processing This patch fixes the problem of dropping RANN element if the TTL is 1. If the received RANN element TTL is 1 or greater than 1, the RANN is processed. However, forwarding of received RANN element with TTL 1 or less is prohibited according to the standard. This is previously reported by Monthadar Al Jaberi. Besides, this patch also avoid the processing of unicast PREQ generation if the RANN element does not meet the acceptance criteria mentioned in Sec. 13.10.12.4.2 of IEEE Std. 802.11-2012. Reported-by: Monthadar Al Jaberi <monthadar@gmail.com> Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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728b19e5 |
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13-Jun-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
{nl,cfg,mac}80211: implement dot11MeshHWMPconfirmationInterval As defined in section 13.10.9.3 Case D (802.11-2012), this control variable is used to limit the mesh STA to send only one PREQ to a root mesh STA within this interval of time (in TUs). The default value for this variable is set to 2000 TUs. However, for current implementation, the maximum configurable of dot11MeshHWMPconfirmationInterval is restricted by dot11MeshHWMPactivePathTimeout. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> [line-break commit log] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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3fbf4b71b |
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16-Jun-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: implement the proactive PREP generation Generate the proactive PREP element in Proactive PREQ mode as defined in Sec. 13.10.10.3 (Case D) of IEEE Std. 802.11-2012. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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a69cc44f |
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13-Jun-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: implement the proactive PREQ generation Generate the proactive PREQ element as defined in Sec. 13.10.9.3 (Case C) of IEEE Std. 802.11-2012 based on the selection of dot11MeshHWMPRootMode as follow: dot11MeshHWMPRootMode (2) is proactivePREQnoPREP dot11MeshHWMPRootMode (3) is proactivePREQwithPREP The proactive PREQ is generated based on the interval defined by dot11MeshHWMProotInterval. With this change, proactive RANN element is now generated if the dot11MeshHWMPRootMode is set to (4) instead of (1). Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> [line-break commit log] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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35b3fe1c |
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08-Jun-2012 |
Javier Cardona <javier@cozybit.com> |
mac80211: Rename stainfo variable for the more common sta Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Jason Abele <jason@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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e3f5d161 |
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08-Jun-2012 |
Javier Cardona <javier@cozybit.com> |
mac80211: Remove unused variable Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Jason Abele <jason@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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f0d23208 |
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15-May-2012 |
Joe Perches <joe@perches.com> |
net: mac80211: Convert printk(KERN_DEBUG to pr_debug Standardize the debugging to be able to use dynamic_debug. Coalesce formats, align arguments. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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7d4e15b1 |
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04-May-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: fix the increment of unicast/multicast counters for forwarded PREQ Forwarded PREQ is either unicast or multicast. The appropriate counters should be incremented accordingly. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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b203ca39 |
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08-May-2012 |
Joe Perches <joe@perches.com> |
mac80211: Convert compare_ether_addr to ether_addr_equal Use the new bool function ether_addr_equal to add some clarity and reduce the likelihood for misuse of compare_ether_addr for sorting. Done via cocci script: $ cat compare_ether_addr.cocci @@ expression a,b; @@ - !compare_ether_addr(a, b) + ether_addr_equal(a, b) @@ expression a,b; @@ - compare_ether_addr(a, b) + !ether_addr_equal(a, b) @@ expression a,b; @@ - !ether_addr_equal(a, b) == 0 + ether_addr_equal(a, b) @@ expression a,b; @@ - !ether_addr_equal(a, b) != 0 + !ether_addr_equal(a, b) @@ expression a,b; @@ - ether_addr_equal(a, b) == 0 + !ether_addr_equal(a, b) @@ expression a,b; @@ - ether_addr_equal(a, b) != 0 + ether_addr_equal(a, b) @@ expression a,b; @@ - !!ether_addr_equal(a, b) + ether_addr_equal(a, b) Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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35bcd591 |
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09-Apr-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: fix the assignment of PREQ's MAC address for Proactive RANN Record the RANN sender's address only for RANNs that meet the acceptance criteria (per sections 13.10.12.4.2). Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Reviewed-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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d2a079fd |
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23-Mar-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: fix the RANN propagation issues This patch is intended to solve the follwing issues in RANN propagation: [1] The interval in propagated RANN should be based on the interval of received RANN. [2] The aggregated path metric for propagated RANN is as received plus own link metric towards the transmitting mesh STA (not root mesh STA). [3] The comparison of path metric for RANN with same sequence number should be done before deciding whether to propagate or not. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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292c41ac |
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19-Mar-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: fix the sparse warnings on endian handling in RANN propagation The HWMP sequence number of received RANN element is compared to decide whether to be propagated. The sequence number is required to covert from 32bit little endian data into CPUs endianness for comparison. The same applies to the RANN metric. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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6b62bf32 |
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05-Mar-2012 |
Thomas Pedersen <thomas@cozybit.com> |
mac80211: fix mesh airtime link metric estimating Airtime link metric estimation was broken in HT mesh, use cfg80211_calculate_bitrate to get the right rate value. Also factor out tx rate copying from sta_set_sinfo(). Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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d665508b |
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01-Mar-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: fix the support of setting non-forwarding entity in Mesh RANN, PREP and PERR propagation should happen only if the dot11MeshForwarding is true. Besides, data frame should not be forwarded if dot11MeshForwarding is false. This redundant checking is necessary to avoid the broadcasted ARP breaking the non-forwarding rule. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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888d04df |
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01-Mar-2012 |
Felix Fietkau <nbd@openwrt.org> |
mac80211: use compare_ether_addr on MAC addresses instead of memcmp Because of the constant size and guaranteed 16 bit alignment, the inline compare_ether_addr function is much cheaper than calling memcmp. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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3d045a54 |
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28-Feb-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
mac80211: Fix the generation of PREQs in proactive RANN mechanism of HWMP According to Section Y.7.4 Actions on receipt of proactive RANN, an individually addressed PREQ should be generated towards the neighbor peer mesh STA indicated in the RANN Sender Address field in the forwarding information. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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d26ad377 |
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20-Feb-2012 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: clean up asm/unaligned.h inclusion Some files implicitly get this via mesh.h which itself doesn't need it, so move the inclusion into the right files. Some other files don't need it at all but include it, so remove it from there. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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94f90656 |
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20-Jan-2012 |
Chun-Yeow Yeoh <yeohchunyeow@gmail.com> |
{nl,cfg,mac}80211: Add support of setting non-forwarding entity in Mesh A mesh node that joins the mesh network is by default a forwarding entity. This patch allows the mesh node to set as non-forwarding entity. Whenever dot11MeshForwarding is set to 0, the mesh node can prevent itself from forwarding the traffic which is not destined to him. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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65e8b0cc |
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17-Jan-2012 |
Javier Cardona <javier@cozybit.com> |
mac80211: Use the right headroom size for mesh mgmt frames Use local->tx_headroom instad of local->hw.extra_tx_headroom. local->tx_headroom is the max of hw.extra_tx_headroom required by the driver and the headroom required by mac80211 for status reporting. On drivers where hw.extra_tx_headroom is smaller than what mac80211 requires (e.g. ath5k), we would not reserve sufficient buffer space to report tx status. Also, don't reserve local->tx_headroom + local->hw.extra_tx_headroom. Reported-by: Simon Morgenthaler <s.morgenthaler@students.unibe.ch> Reported-by: Kai Scharwies <kai@scharwies.de> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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0cfda851 |
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24-Nov-2011 |
Thomas Pedersen <thomas@cozybit.com> |
mac80211: don't initiate path discovery when forwarding frame with unknown DA We used to initiate a path discovery when receiving a frame for which there is no forwarding information. To cut down on PREQ spam, just send a (gated) PERR in response. Also separate path discovery logic from nexthop querying. This patch means we no longer queue frames when forwarding, so kill the PERR TX stuff in discard_frame(). Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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dca7e943 |
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24-Nov-2011 |
Thomas Pedersen <thomas@cozybit.com> |
{nl,cfg,mac}80211: implement dot11MeshHWMPperrMinInterval As per 802.11mb 13.9.11.3 Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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3c26f1f6 |
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24-Nov-2011 |
Thomas Pedersen <thomas@cozybit.com> |
mac80211: fix switched HWMP frame addresses HWMP originator and target addresses were switched on the air but also on reception, which is why path selection still worked. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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7e3c8866 |
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24-Nov-2011 |
Thomas Pedersen <thomas@cozybit.com> |
mac80211: failed forwarded mesh frame addressing Don't write the TA until next hop is actually known, since we might need the original TA for sending a PERR. Previously we would send a PERR to ourself if path resolution for a forwarded frame failed. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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f2dc7989 |
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18-Nov-2011 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: minor cleanup to mesh state locking First time I tried smatch, and it says: mesh_hwmp.c +870 mesh_queue_preq(21) error: double lock 'bottom_half:' mesh_hwmp.c +873 mesh_queue_preq(24) error: double unlock 'bottom_half:' mesh_hwmp.c +886 mesh_queue_preq(37) error: double unlock 'bottom_half:' Which is indeed true -- there's no point in disabling BHs again if we just did that a few lines earlier, so remove. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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88d53465 |
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14-Nov-2011 |
Dan Carpenter <dan.carpenter@oracle.com> |
mac80211: memory leak in mesh_queue_preq() We recently introduced a return here, but we need to call kfree first. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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d0ce1855 |
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03-Nov-2011 |
Javier Cardona <javier@cozybit.com> |
mac80211: simplify mesh frame queue mapping and QoS We only need to set the skb queue twice: 1. by the netdev, on local TX. 2. when forwarding a mesh frame. We only need to set the qos header twice: 1. by mac80211, on local TX. 2. when putting a frame on the mpath->frame_queue We also don't need the RA in order to set the proper queue mapping since all mesh STAs are QoS, indicate this and do it once when the frame is received. Also fixes an issue where the QoS header and queue mapping was not set for unicast forwarded frames. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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f3011cf9 |
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03-Nov-2011 |
Javier Cardona <javier@cozybit.com> |
mac80211: Avoid filling up mesh preq queue with redundant requests Don't accept redundant PREQs for a given destination. This fixes a problem under high load: kernel: [20386.250913] mesh_queue_preq: 235 callbacks suppressed kernel: [20386.253335] Mesh HWMP (mesh0): PREQ node queue full kernel: [20386.253352] Mesh HWMP (mesh0): PREQ node queue full (...) The 802.11s protocol has a provision to limit the rate of path requests (PREQs) are transmitted (dot11MeshHWMPpreqMinInterval) but there was no limit on the rate at which PREQs were being queued up. There is a valid reason for queuing PREQs: this way we can even out PREQ bursts. But queueing multiple PREQs for the same destination is useless. Reported-by: Pedro Larbig <pedro.larbig@carhs.de> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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3b69a9c5 |
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26-Oct-2011 |
Thomas Pedersen <thomas@cozybit.com> |
mac80211: comment allocation of mesh frames Remove most references to magic numbers, save a few bytes and hopefully improve readability. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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97091317 |
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06-Oct-2011 |
Javier Cardona <javier@cozybit.com> |
mac80211: Fix regression that allowed mpaths between non-peers. Mesh paths should only exist over established peer links. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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2154c81c |
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07-Sep-2011 |
Javier Cardona <javier@cozybit.com> |
mac80211: Mesh data frames must have the QoS header Per sec 7.1.3.5 of draft 12.0 of 802.11s, mesh frames indicate the presence of the mesh control header in their QoS header. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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2cca397f |
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06-Sep-2011 |
Javier Cardona <javier@cozybit.com> |
mac80211: Defer tranmission of mesh path errors Under failure conditions, the mesh stack sends PERR messages to the previous sender of the failed frame. This happens in the tx feedback path, in which the transmission queue lock may be taken. Avoid a deadlock by sending the path error via the pending queue. Signed-off-by: John W. Linville <linville@tuxdriver.com>
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16dd7267 |
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09-Aug-2011 |
Javier Cardona <javier@cozybit.com> |
{nl,cfg,mac}80211: let userspace make meshif mesh gate Allow userspace to set NL80211_MESHCONF_GATE_ANNOUNCEMENTS attribute, which will advertise this mesh node as being a mesh gate. NL80211_HWMP_ROOTMODE must be set or this will do nothing. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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0507e159 |
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09-Aug-2011 |
Javier Cardona <javier@cozybit.com> |
{nl,cfg,mac}80211: let userspace set RANN interval Allow userspace to set Root Announcement Interval for our mesh interface. Also, RANN interval is now in proper units of TUs. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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5ee68e5b |
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09-Aug-2011 |
Javier Cardona <javier@cozybit.com> |
mac80211: mesh gate implementation In this implementation, a mesh gate is a root node with a certain bit set in its RANN flags. The mpath to this root node is marked as a path to a gate, and added to our list of known gates for this if_mesh. Once a path discovery process fails, we forward the unresolved frames to a known gate. Thanks to Luis Rodriguez for refactoring and bug fix help. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
7646887a |
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09-Aug-2011 |
Javier Cardona <javier@cozybit.com> |
mac80211: improve mpath debugging make hwmp_dbg print the relevant sdata->name by default and improve formatting. Also add mpath_dbg macro for debugging of mesh path operations. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
25d49e4d |
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11-Aug-2011 |
Thomas Pedersen <thomas@cozybit.com> |
mac80211: update mesh path selection frame format Make mesh path selection frames Mesh Action category, remove outdated Mesh Path Selection category and defines, use updated reason codes, add mesh_action_is_path_sel for readability, and update/correct path selection IEs. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
1b1de7aa |
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08-Aug-2011 |
Javier Cardona <javier@cozybit.com> |
mac80211: fix erroneous clearing of MESH_PATH_SN_VALID flag When a PREQ or PREP is received from an intermediate node, it contains useful information for path selection but it doesn't include the originator's sequence number. Therefore, when updating the mesh path to that intermediate node, we should not set the MESH_PATH_SN_VALID flag. BUT, if the flag is set, it should not be unset as we might have received a valid sequence number for that intermediate node in the past. This issue was reported, fixed and tested by Ya Bo (游波) and Pedro Larbig (ASPj). Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
987dafad |
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27-Jul-2011 |
Baruch Siach <baruch@tkos.co.il> |
mac80211/mesh: make the preq queue lock consistent Make mesh_preq_queue_lock locking consistent with mesh_queue_preq() using spin_lock_bh(). Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
497888cf |
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14-Jul-2011 |
Phil Carmody <ext-phil.2.carmody@nokia.com> |
treewide: fix potentially dangerous trailing ';' in #defined values/expressions All these are instances of #define NAME value; or #define NAME(params_opt) value; These of course fail to build when used in contexts like if(foo $OP NAME) while(bar $OP NAME) and may silently generate the wrong code in contexts such as foo = NAME + 1; /* foo = value; + 1; */ bar = NAME - 1; /* bar = value; - 1; */ baz = NAME & quux; /* baz = value; & quux; */ Reported on comp.lang.c, Message-ID: <ab0d55fe-25e5-482b-811e-c475aa6065c3@c29g2000yqd.googlegroups.com> Initial analysis of the dangers provided by Keith Thompson in that thread. There are many more instances of more complicated macros having unnecessary trailing semicolons, but this pile seems to be all of the cases of simple values suffering from the problem. (Thus things that are likely to be found in one of the contexts above, more complicated ones aren't.) Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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#
40b275b6 |
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13-May-2011 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: sparse RCU annotations This adds sparse RCU annotations to most of mac80211, only the mesh code remains to be done. Due the the previous patches, the annotations are pretty simple. The only thing that this actually changes is removing the RCU usage of key->sta in debugfs since this pointer isn't actually an RCU-managed pointer (it only has a single assignment done before the key even goes live). As that is otherwise harmless, I decided to make it part of this patch. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
dea4096b |
|
12-May-2011 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: remove pointless mesh path timer RCU code The code here to RCU-dereference a pointer that's on the stack is totally pointless, RCU isn't magic (like say Java's weak references are), so the code can't work like whoever wrote it thought it might. Remove it so readers don't get confused. Note that it seems that a bug is there anyway: I don't see any code that cancels the timer when a mesh path struct is destroyed. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
9b76b1e4 |
|
06-May-2011 |
Fabrice Deyber <fabricedeyber@agilemesh.com> |
mac80211: Only process mesh PREPs with equal seq number if metric is better. This fixes routing loops in PREP propagation and is in accordance with Draft 11, Section: 11C.9.8.4. Signed-off-by: Fabrice Deyber <fabricedeyber@agilemesh.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
0915cba3 |
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25-Apr-2011 |
Rajkumar Manoharan <rmanoharan@atheros.com> |
mac80211: Fix warnings due to -Wunused-but-set-variable These warnings are exposed by gcc 4.6. net/mac80211/sta_info.c: In function 'sta_info_cleanup_expire_buffered': net/mac80211/sta_info.c:590:32: warning: variable 'sdata' set but not used net/mac80211/ibss.c: In function 'ieee80211_rx_mgmt_auth_ibss': net/mac80211/ibss.c:43:34: warning: variable 'status_code' set but not used net/mac80211/work.c: In function 'ieee80211_send_assoc': net/mac80211/work.c:203:9: warning: variable 'len' set but not used net/mac80211/tx.c: In function '__ieee80211_parse_tx_radiotap': net/mac80211/tx.c:1039:35: warning: variable 'sband' set but not used net/mac80211/mesh.c: In function 'ieee80211_mesh_rx_queued_mgmt': net/mac80211/mesh.c:616:28: warning: variable 'ifmsh' set but not used ... Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
45904f21 |
|
03-Dec-2010 |
Javier Cardona <javier@cozybit.com> |
nl80211/mac80211: define and allow configuring mesh element TTL The TTL in path selection information elements is different from the mesh ttl used in mesh data frames. Version 7.03 of the 11s draft calls this ttl 'Element TTL'. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
64592c8f |
|
10-Jun-2010 |
Johannes Berg <johannes.berg@intel.com> |
mac80211: use common work struct IBSS, managed and mesh modes all have their own work struct, and in the future we want to also use it in other modes to process frames from the now common skb queue. This also makes the skb queue and work safe to use from other interface types. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
3fa21e07 |
|
18-May-2010 |
Joe Perches <joe@perches.com> |
net: Remove unnecessary returns from void function()s This patch removes from net/ (but not any netfilter files) all the unnecessary return; statements that precede the last closing brace of void functions. It does not remove the returns that are immediately preceded by a label as gcc doesn't like that. Done via: $ grep -rP --include=*.[ch] -l "return;\n}" net/ | \ xargs perl -i -e 'local $/ ; while (<>) { s/\n[ \t\n]+return;\n}/\n}/g; print; }' Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
97ad9139 |
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29-Mar-2010 |
Javier Cardona <javier@cozybit.com> |
mac80211: Moved mesh action codes to a more visible location Grouped mesh action codes together with the other action codes in ieee80211.h. Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
533866b1 |
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24-Feb-2010 |
Porsch, Marco <marco.porsch@siemens.com> |
mac80211: fix PREQ processing and one small bug 1st) a PREQ should only be processed, if it has the same SN and better metric (instead of better or equal). 2nd) next_hop[ETH_ALEN] now actually used to buffer mpath->next_hop->sta.addr for use out of lock. Signed-off-by: Marco Porsch <marco.porsch@siemens.com> Acked-by: Javier Cardona <javier@cozybit.com> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
5a0e3ad6 |
|
24-Mar-2010 |
Tejun Heo <tj@kernel.org> |
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
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#
47846c9b |
|
25-Nov-2009 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: reduce reliance on netdev For bluetooth 3, we will most likely not have a netdev for a virtual interface (sdata), so prepare for that by reducing the reliance on having a netdev. This patch moves the name and address fields into the sdata struct and uses them from there all over. Some work is needed to keep them sync'ed, but that's not a lot of work and in slow paths anyway. In doing so, this also reduces the number of pointer dereferences in many places, because of things like sdata->dev->dev_addr becoming sdata->vif.addr. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
abe60632 |
|
25-Nov-2009 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: make station management completely depend on vif The station management currently uses the virtual interface, but you cannot add the same station to multiple virtual interfaces if you're communicating with it in multiple ways. This restriction should be lifted so that in the future we can, for instance, support bluetooth 3 with an access point that mac80211 is already associated to. We can do that by requiring all sta_info_get users to provide the virtual interface and making the RX code aware that an address may match more than one station struct. Thanks to the previous patches this one isn't all that large and except for the RX and TX status paths changes has low complexity. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
7b324d28 |
|
09-Dec-2009 |
Javier Cardona <javier@cozybit.com> |
mac80211: Revert 'Use correct sign for mesh active path refresh' The patch ("mac80211: Use correct sign for mesh active path refresh.") was actually a bug. Reverted it and improved the explanation of how mesh path refresh works. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: Andrey Yurovsky <andrey@cozybit.com> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
f64f9e71 |
|
29-Nov-2009 |
Joe Perches <joe@perches.com> |
net: Move && and || to end of previous line Not including net/atm/ Compiled tested x86 allyesconfig only Added a > 80 column line or two, which I ignored. Existing checkpatch plaints willfully, cheerfully ignored. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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#
62ae67be |
|
18-Nov-2009 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: remove encrypt parameter from ieee80211_tx_skb Since the flags moved into skb->cb, there's no longer a need to have the encrypt bool passed into the function, anyone who requires it set to 0 (false) can just set the flag directly. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
15ff6365 |
|
17-Nov-2009 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: use fixed broadcast address The netdev broadcast address cannot change from all-ones so there's no need to use it; we can instead hard-code it. Since we already have an instance in tkip.c, which will be shared if it is marked static const, doing this reduces text size at no data/bss cost. The real motivation for this is, of course, the desire to get rid of almost all uses of netdevs in mac80211 so that auditing their use becomes easier. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
264d9b7d |
|
09-Nov-2009 |
Rui Paulo <rpaulo@gmail.com> |
mac80211: update copyrights to 2009 Signed-off-by: Rui Paulo <rpaulo@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Andrey Yurovsky <andrey@cozybit.com> Tested-by: Brian Cavagnolo <brian@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
e304bfd3 |
|
09-Nov-2009 |
Rui Paulo <rpaulo@gmail.com> |
mac80211: implement a timer to send RANN action frames RANN (Root Annoucement) frame TX. Send an action frame every second trying to build a path to all nodes on the mesh. Signed-off-by: Rui Paulo <rpaulo@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Andrey Yurovsky <andrey@cozybit.com> Tested-by: Brian Cavagnolo <brian@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
d19b3bf6 |
|
09-Nov-2009 |
Rui Paulo <rpaulo@gmail.com> |
mac80211: replace "destination" with "target" to follow the spec Resulting object files have the same MD5 as before. Signed-off-by: Rui Paulo <rpaulo@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Andrey Yurovsky <andrey@cozybit.com> Tested-by: Brian Cavagnolo <brian@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
a6a58b4f |
|
09-Nov-2009 |
Rui Paulo <rpaulo@gmail.com> |
mac80211: properly forward the RANN IE Increase hopcount and convert metric to LE before forwarding the RANN action frame. Signed-off-by: Rui Paulo <rpaulo@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Andrey Yurovsky <andrey@cozybit.com> Tested-by: Brian Cavagnolo <brian@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
d611f062 |
|
09-Nov-2009 |
Rui Paulo <rpaulo@gmail.com> |
mac80211: update PERR frame format Update the PERR IE frame format according to latest draft (3.03). Signed-off-by: Rui Paulo <rpaulo@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Andrey Yurovsky <andrey@cozybit.com> Tested-by: Brian Cavagnolo <brian@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
90a5e169 |
|
10-Nov-2009 |
Rui Paulo <rpaulo@gmail.com> |
mac80211: implement RANN processing and forwarding Process the RANN (Root Annoucement) Frame and try to find the HWMP root station by sending a PREQ. Signed-off-by: Rui Paulo <rpaulo@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Andrey Yurovsky <andrey@cozybit.com> Tested-by: Brian Cavagnolo <brian@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
f3c0d88a |
|
09-Nov-2009 |
Rui Paulo <rpaulo@gmail.com> |
mac80211: improve HWMP debugging Signed-off-by: Rui Paulo <rpaulo@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Andrey Yurovsky <andrey@cozybit.com> Tested-by: Brian Cavagnolo <brian@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
dbb81c42 |
|
09-Nov-2009 |
Rui Paulo <rpaulo@gmail.com> |
mac80211: allow processing of more than one HWMP IE Since the HWMP IEs are now all optional and the action code is fixed, allow the HWMP code to find and process each IE on the path selection action frames. Signed-off-by: Rui Paulo <rpaulo@gmail.com> Signed-off-by: Javier Cardona <rpaulo@cozybit.com> Reviewed-by: Andrey Yurovsky <andrey@cozybit.com> Tested-by: Brian Cavagnolo <brian@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
27db2e42 |
|
09-Nov-2009 |
Rui Paulo <rpaulo@gmail.com> |
mac80211: add MAC80211_VERBOSE_MHWMP_DEBUG Add MAC80211_VERBOSE_MHWMP_DEBUG, a debugging option for HWMP frame processing. Signed-off-by: Rui Paulo <rpaulo@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Andrey Yurovsky <andrey@cozybit.com> Tested-by: Brian Cavagnolo <brian@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
095de013 |
|
09-Nov-2009 |
Rui Paulo <rpaulo@gmail.com> |
mac80211: update the format of path selection frames Update the format of path selection frames according to latest draft (3.03). Signed-off-by: Rui Paulo <rpaulo@gmail.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Reviewed-by: Andrey Yurovsky <andrey@cozybit.com> Tested-by: Brian Cavagnolo <brian@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
f99288d1 |
|
20-Oct-2009 |
Andrey Yurovsky <andrey@cozybit.com> |
mac80211: trivial: fix spelling in mesh_hwmp Fix a typo in the description of hwmp_route_info_get(), no function changes. Signed-off-by: Andrey Yurovsky <andrey@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
c8a61a7d |
|
18-Aug-2009 |
Daniel Walker <dwalker@fifo99.com> |
mac80211: New stat counters for multicast and unicast forwarded frames This expands on the current fwded_frames stat counter which should be equal to the total of these two new counters. The new counters are called "fwded_mcast" and "fwded_unicast". Signed-off-by: Daniel Walker <dwalker@fifo99.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
bfc32e6a |
|
17-Aug-2009 |
Javier Cardona <javier@cozybit.com> |
mac80211: Decouple fail_avg stats used by mesh from rate control algorithm. Mesh uses the tx failure average to compute the (m)path metric. This used to be done inside the rate control module. This patch breaks the dependency between the mesh stack and the rate control algorithm. Mesh will now work independently of the chosen rate control algorithm. The mesh stack keeps a moving average of the average transmission losses for each mesh peer station. If the fail average exceeds a certain threshold, the peer link is marked as broken. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
57ef5ddb |
|
12-Aug-2009 |
David Woo <xinhua_wu@realsil.com.cn> |
mac80211: Mark a destination sequence number as valid when a PREQ is received. If a PREQ frame is received giving us a fresher DSN than what we have, record the new dsn and mark it as valid. This patch fixes a bug in the setting of the MESH_PATH_DSN_VALID flag. Also, minor fix to coding style on that file. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
|
#
a9e3091b |
|
10-Aug-2009 |
Andrey Yurovsky <andrey@cozybit.com> |
mac80211: Use correct sign for mesh active path refresh. On locally originated traffic, we refresh active paths after a timeout. The decision to do this was using the wrong sign and therefore the refresh timer was triggered for every frame. Signed-off-by: Andrey Yurovsky <andrey@cozybit.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
|
#
fe583434 |
|
10-Aug-2009 |
Javier Cardona <javier@cozybit.com> |
mac80211: Improve dequeing from mpath frame queue. Also, fix typo in comment. Signed-off-by: Javier Cardona <javier@cozybit.com> Tested-by: Andrey Yurovsky <andrey@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
|
#
c03e20fc |
|
04-Aug-2009 |
Luis R. Rodriguez <lrodriguez@atheros.com> |
mac80211: fix compilation of mesh (although its disabled) Mesh is currently disabled on mac80211, its marked as broken. This patch gets it to compile though, to account for the mac80211 workqueue changes. There was a simple typo in the patches for mesh for the workqueue migration, but we never compile tested it as we couldn't even select mesh as its broken. Lets at least let it compile for those interested in getting it fixed. Reported-by: Pat Erley <pat-lkml@erley.org> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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#
42935eca |
|
29-Jul-2009 |
Luis R. Rodriguez <lrodriguez@atheros.com> |
mac80211: redefine usage of the mac80211 workqueue The mac80211 workqueue exists to enable mac80211 and drivers to queue their own work on a single threaded workqueue. mac80211 takes care to flush the workqueue during suspend but we never really had requirements on drivers for how they should use the workqueue in consideration for suspend. We extend mac80211 to document how the mac80211 workqueue should be used, how it should not be used and finally move raw access to the workqueue to mac80211 only. Drivers and mac80211 use helpers to queue work onto the mac80211 workqueue: * ieee80211_queue_work() * ieee80211_queue_delayed_work() These helpers will now warn if mac80211 already completed its suspend cycle and someone is trying to queue work. mac80211 flushes the mac80211 workqueue prior to suspend a few times, but we haven't taken the care to ensure drivers won't add more work after suspend. To help with this we add a warning when someone tries to add work and mac80211 already completed the suspend cycle. Drivers should ensure they cancel any work or delayed work in the mac80211 stop() callback. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
|
#
249b405c |
|
07-Jul-2009 |
Javier Cardona <javier@cozybit.com> |
mac80211: Fix regression in mesh forwarding path. The removal of the master netdev broke the mesh forwarding path. This patch fixes it by using the new internal 'pending' queue. As a result of this change, mesh forwarding no longer does the inefficient 802.11 -> 802.3 -> 802.11 conversion that was done before. [Changes since v1] Suggested by Johannes: - Select queue before adding to mpath queue - ieee80211_add_pending_skb -> ieee80211_add_pending_skbs - Remove unnecessary header wme.h Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: Andrey Yurovsky <andrey@cozybit.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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a43816df |
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10-Jul-2009 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: mesh: fix two small problems 1) there's a spin_lock() that needs to be spin_lock_bh() 2) action frames of size 24 might cause an out-of-bounds memory access (for the 25th byte only, so no big deal) Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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59615b5f |
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25-Jun-2009 |
Andrey Yurovsky <andrey@cozybit.com> |
mac80211: fix allocation in mesh_queue_preq We allocate a PREQ queue node in mesh_queue_preq, however the allocation may cause us to sleep. Use GFP_ATOMIC to prevent this. [ 1869.126498] BUG: scheduling while atomic: ping/1859/0x10000100 [ 1869.127164] Modules linked in: ath5k mac80211 ath [ 1869.128310] Pid: 1859, comm: ping Not tainted 2.6.30-wl #1 [ 1869.128754] Call Trace: [ 1869.129293] [<c1023a2b>] __schedule_bug+0x48/0x4d [ 1869.129866] [<c13b5533>] __schedule+0x77/0x67a [ 1869.130544] [<c1026f2e>] ? release_console_sem+0x17d/0x185 [ 1869.131568] [<c807cf47>] ? mesh_queue_preq+0x2b/0x165 [mac80211] [ 1869.132318] [<c13b5b3e>] schedule+0x8/0x1f [ 1869.132807] [<c1023c12>] __cond_resched+0x16/0x2f [ 1869.133478] [<c13b5bf0>] _cond_resched+0x27/0x32 [ 1869.134191] [<c108a370>] kmem_cache_alloc+0x1c/0xcf [ 1869.134714] [<c10273ae>] ? printk+0x15/0x17 [ 1869.135670] [<c807cf47>] mesh_queue_preq+0x2b/0x165 [mac80211] [ 1869.136731] [<c807d1f8>] mesh_nexthop_lookup+0xee/0x12d [mac80211] [ 1869.138130] [<c807417e>] ieee80211_xmit+0xe6/0x2b2 [mac80211] [ 1869.138935] [<c80be46d>] ? ath5k_hw_setup_rx_desc+0x0/0x66 [ath5k] [ 1869.139831] [<c80c97bc>] ? ath5k_tasklet_rx+0xba/0x506 [ath5k] [ 1869.140863] [<c8075191>] ieee80211_subif_start_xmit+0x6c9/0x6e4 [mac80211] [ 1869.141665] [<c105cf1c>] ? handle_level_irq+0x78/0x9d [ 1869.142390] [<c12e3f93>] dev_hard_start_xmit+0x168/0x1c7 [ 1869.143092] [<c12f1f17>] __qdisc_run+0xe1/0x1b7 [ 1869.143612] [<c12e25ff>] qdisc_run+0x18/0x1a [ 1869.144248] [<c12e62f4>] dev_queue_xmit+0x16a/0x25a [ 1869.144785] [<c13b6dcc>] ? _read_unlock_bh+0xe/0x10 [ 1869.145465] [<c12eacdb>] neigh_resolve_output+0x19c/0x1c7 [ 1869.146182] [<c130e2da>] ? ip_finish_output+0x0/0x51 [ 1869.146697] [<c130e2a0>] ip_finish_output2+0x182/0x1bc [ 1869.147358] [<c130e327>] ip_finish_output+0x4d/0x51 [ 1869.147863] [<c130e9d5>] ip_output+0x80/0x85 [ 1869.148515] [<c130cc49>] dst_output+0x9/0xb [ 1869.149141] [<c130dec6>] ip_local_out+0x17/0x1a [ 1869.149632] [<c130e0bc>] ip_push_pending_frames+0x1f3/0x255 [ 1869.150343] [<c13247ff>] raw_sendmsg+0x5e6/0x667 [ 1869.150883] [<c1033c55>] ? insert_work+0x6a/0x73 [ 1869.151834] [<c8071e00>] ? ieee80211_invoke_rx_handlers+0x17da/0x1ae8 [mac80211] [ 1869.152630] [<c132bd68>] inet_sendmsg+0x3b/0x48 [ 1869.153232] [<c12d7deb>] __sock_sendmsg+0x45/0x4e [ 1869.153740] [<c12d8537>] sock_sendmsg+0xb8/0xce [ 1869.154519] [<c80be46d>] ? ath5k_hw_setup_rx_desc+0x0/0x66 [ath5k] [ 1869.155289] [<c1036b25>] ? autoremove_wake_function+0x0/0x30 [ 1869.155859] [<c115992b>] ? __copy_from_user_ll+0x11/0xce [ 1869.156573] [<c1159d99>] ? copy_from_user+0x31/0x54 [ 1869.157235] [<c12df646>] ? verify_iovec+0x40/0x6e [ 1869.157778] [<c12d869a>] sys_sendmsg+0x14d/0x1a5 [ 1869.158714] [<c8072c40>] ? __ieee80211_rx+0x49e/0x4ee [mac80211] [ 1869.159641] [<c80c83fe>] ? ath5k_rxbuf_setup+0x6d/0x8d [ath5k] [ 1869.160543] [<c80be46d>] ? ath5k_hw_setup_rx_desc+0x0/0x66 [ath5k] [ 1869.161434] [<c80beba4>] ? ath5k_hw_get_rxdp+0xe/0x10 [ath5k] [ 1869.162319] [<c80c97bc>] ? ath5k_tasklet_rx+0xba/0x506 [ath5k] [ 1869.163063] [<c1005627>] ? enable_8259A_irq+0x40/0x43 [ 1869.163594] [<c101edb8>] ? __dequeue_entity+0x23/0x27 [ 1869.164793] [<c100187a>] ? __switch_to+0x2b/0x105 [ 1869.165442] [<c1021d5f>] ? finish_task_switch+0x5b/0x74 [ 1869.166129] [<c12d963a>] sys_socketcall+0x14b/0x17b [ 1869.166612] [<c1002b95>] syscall_call+0x7/0xb Signed-off-by: Andrey Yurovsky <andrey@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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5bb644a0 |
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17-May-2009 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: cancel/restart all timers across suspend/resume We forgot to cancel all timers in mac80211 when suspending. In particular we forgot to deal with some things that can cause hardware reconfiguration -- while it is down. While at it we go ahead and add a warning in ieee80211_sta_work() if its run while the suspend->resume cycle is in effect. This should not happen and if it does it would indicate there is a bug lurking in either mac80211 or mac80211 drivers. With this now wpa_supplicant doesn't blink when I go to suspend and resume where as before there where issues with some timers running during the suspend->resume cycle. This caused a lot of incorrect assumptions and would at times bring back the device in an incoherent, but mostly recoverable, state. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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20ad19d0 |
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10-Feb-2009 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: fix RX aggregation timeouts The values are in TUs (1.024ms), not ms. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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2182b830 |
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19-Jan-2009 |
Rami Rosen <ramirose@gmail.com> |
mac80211: trivial documentation fix (mesh_nexthop_lookup()). This patch fixes the documentation of mesh_nexthop_lookup() in mesh_hwmp.c. Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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1acc97b6 |
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08-Jan-2009 |
Jouni Malinen <j@w1.fi> |
mac80211: 802.11w - Do not force Action frames to disable encryption When sending out Action frames, allow ieee80211_tx_skb() to send them without enforcing do_not_encrypt. These frames will be encrypted if MFP has been negotiated. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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cf005b1d |
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21-Nov-2008 |
Qinghuang Feng <qhfeng.kernel@gmail.com> |
net: remove redundant argument comments Remove redundant argument comments in files of net/* Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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e6a9854b |
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20-Oct-2008 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211/drivers: rewrite the rate control API So after the previous changes we were still unhappy with how convoluted the API is and decided to make things simpler for everybody. This completely changes the rate control API, now taking into account 802.11n with MCS rates and more control, most drivers don't support that though. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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ae17e986 |
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10-Sep-2008 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: move txrate_idx into RC algorithms The sta_info->txrate_idx member isn't used by all RC algorithms in the way it was intended to be used, move it into those that require it (only PID) and keep track in the core code of which rate was last used for reporting to userspace and the mesh MLME. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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17741cdc |
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10-Sep-2008 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: share STA information with driver This patch changes mac80211 to share some more data about stations with drivers. Should help iwlwifi and ath9k when they get around to updating, and might also help with implementing rate control algorithms without internals. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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472dbc45 |
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10-Sep-2008 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: split off mesh handling entirely This patch splits off mesh handling from the STA/IBSS. Unfortunately it increases mesh code size a bit, but I think it makes things clearer. The patch also reduces per-interface run-time memory usage. Also clean up a few places where ifdef is not required. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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e50db65c |
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09-Sep-2008 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: move frame TX function The ieee80211_sta_tx function isn't MLME code any more, it's getting used by a lot of code. Move it to utils and rename it to ieee80211_tx_skb. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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9c80d3dc |
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08-Sep-2008 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: fix action frame length checks The action frame length checks are one too small, there's not just an action code as the comment makes you believe, there's a category code too, and the category code is required in each action frame (hence part of IEEE80211_MIN_ACTION_SIZE). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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f698d856 |
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02-Aug-2008 |
Jasper Bryant-Greene <jasper@amiton.co.nz> |
replace net_device arguments with ieee80211_{local,sub_if_data} as appropriate This patch replaces net_device arguments to mac80211 internal functions with ieee80211_{local,sub_if_data} as appropriate. It also does the same for many 802.11s mesh functions, and changes the mesh path table to be indexed on sub_if_data rather than net_device. If the mesh part needs to be a separate patch let me know, but since mesh uses a lot of mac80211 functions which were being converted anyway, the changes go hand-in-hand somewhat. This patch probably does not convert all the functions which could be converted, but it is a large chunk and followup patches will be provided. Signed-off-by: Jasper Bryant-Greene <jasper@amiton.co.nz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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e7827a70 |
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15-Jul-2008 |
Harvey Harrison <harvey.harrison@gmail.com> |
mac80211: remove IEEE80211_FC helper Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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e32f85f7 |
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05-Aug-2008 |
Luis Carlos Cobo <luisca@cozybit.com> |
mac80211: fix use of skb->cb for mesh forwarding Now we deal with mesh forwarding before the 802.11->802.3 conversion, thus eliminating a few unnecessary steps. The next hop lookup is called from ieee80211_master_start_xmit() instead of subif_start_xmit(). Until the next hop is found, RA in the frame will be all zeroes for frames originating from the device. For forwarded frames, RA will contain the TA of the received frame, which will be necessary to send a path error if a next hop is not found. Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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ae7245cb |
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01-May-2008 |
Harvey Harrison <harvey.harrison@gmail.com> |
wireless: use get/put_unaligned_* helpers Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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812714d7 |
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05-May-2008 |
Patrick McHardy <kaber@trash.net> |
mac80211: mesh hwmp: fix kfree(skb) Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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f375d558 |
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26-Apr-2008 |
Al Viro <viro@ZenIV.linux.org.uk> |
asm/unaligned.h doesn't work well as the very first include Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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9cfb0009 |
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03-Apr-2008 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: clean up IEEE80211_FC use Really doesn't need to be defined four times. Also, while at it, remove a useless macro (IEEE80211_ALIGN32_PAD) and a function prototype for a function we don't actually have (ieee80211_set_compression.) Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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a00de5d0 |
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29-Feb-2008 |
Luis Carlos Cobo <luisca@cozybit.com> |
mac80211: path IE fields macros, fix alignment problems and clean up Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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cfa22c71 |
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29-Feb-2008 |
Luis Carlos Cobo <luisca@cozybit.com> |
mac80211: always force mesh_path deletions Postponing the deletion is not really useful anymore. Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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aa2b5928 |
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29-Feb-2008 |
Luis Carlos Cobo <luisca@cozybit.com> |
mac80211: clean up use of endianness conversion functions Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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37659ff8 |
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29-Feb-2008 |
Luis Carlos Cobo <luisca@cozybit.com> |
mac80211: fix mesh endianness sparse warnings and unmark it as broken This patch fixes all the mesh related endianness warnings reported by sparse. As they were the reason why Johannes marked mesh as BROKEN, that flag has been removed. Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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d0709a65 |
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25-Feb-2008 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: RCU-ify STA info structure access This makes access to the STA hash table/list use RCU to protect against freeing of items. However, it's not a true RCU, the copy step is missing: whenever somebody changes a STA item it is simply updated. This is an existing race condition that is now somewhat understandable. This patch also fixes the race key freeing vs. STA destruction by making sure that sta_info_destroy() is always called under RTNL and frees the key. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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dc0b0f7d |
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23-Feb-2008 |
Johannes Berg <johannes@sipsolutions.net> |
mac80211: mesh hwmp locking fixes This fixes missing unlocks noticed by sparse. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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050ac52c |
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23-Feb-2008 |
Luis Carlos Cobo <luisca@cozybit.com> |
mac80211: code for on-demand Hybrid Wireless Mesh Protocol This file implements the on-demand Hybrid Wireless Mesh Protocol, at this moment using hop-count as the metric. When no mesh path exists for a given destination or the mesh path is not active, frames addressed to that destination will be queued and a Path Request frame will be sent. Queued frames will be sent when the path is resolved (usually after reception of a Path Response) or discarded if discovery times out. Path Requests will also be sent to refresh paths that are being used and are close to expiring. Path Errors are sent when a path discovery process triggered by the attempt to forward a frame originated in a different mesh point times out. Path Errors are also sent when a peer link is determined to be unreachable because of high error rates. Multiple destination support in Path Requests and Path Errors and precursors have not been implemented yet. Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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