- 28 8月, 2008 1 次提交
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由 Andi Kleen 提交于
On most systems most of the TCP established/time-wait hash buckets are empty. When walking the hash table for /proc/net/tcp their read locks would always be aquired just to find out they're empty. This patch changes the code to check first if the buckets have any entries before taking the lock, which is much cheaper than taking a lock. Since the hash tables are large this makes a measurable difference on processing /proc/net/tcp, especially on architectures with slow read_lock (e.g. PPC) On a 2GB Core2 system time cat /proc/net/tcp > /dev/null (with a mostly empty hash table) goes from 0.046s to 0.005s. On systems with slower atomics (like P4 or POWER4) or larger hash tables (more RAM) the difference is much higher. This can be noticeable because there are some daemons around who regularly scan /proc/net/tcp. Original idea for this patch from Marcus Meissner, but redone by me. Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 27 8月, 2008 8 次提交
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由 Gerrit Renker 提交于
The BUG_ON(w_tot == 0) only holds if there is no more than 1 loss interval in the loss history. If there is only a single loss interval, the calc_i_mean() routine need in fact not be called (RFC 3448, 6.3.1). Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk>
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由 Gerrit Renker 提交于
This sets the sysfs permissions so that root can toggle the `debug' parameter available for nearly every DCCP module. This is useful since there are various module inter-dependencies. The debug flag can now be toggled at runtime using echo 1 > /sys/module/dccp/parameters/dccp_debug echo 1 > /sys/module/dccp_ccid2/parameters/ccid2_debug echo 1 > /sys/module/dccp_ccid3/parameters/ccid3_debug echo 1 > /sys/module/dccp_tfrc_lib/parameters/tfrc_debug The last is not very useful yet, since no code at the moment calls the tfrc_debug() macro. Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk>
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由 Gerrit Renker 提交于
dccp_disconnect() can be called due to several reasons: 1. when the connection setup failed (inet_stream_connect()); 2. when shutting down (inet_shutdown(), inet_csk_listen_stop()); 3. when aborting the connection (dccp_close() with 0 linger time). In case (1) the write queue is empty. This patch empties the write queue, if in case (2) or (3) it was not yet empty. This avoids triggering the write-queue BUG_TRAP in sk_stream_kill_queues() later on. It also seems natural to do: when breaking an association, to delete all packets that were originally intended for the soon-disconnected end (compare with call to tcp_write_queue_purge in tcp_disconnect()). Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk>
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由 Gerrit Renker 提交于
This updates the use of the `out_invalid_option' label, which produces a Reset (code 5, "Option Error"), to fill in the Data1...Data3 fields as specified in RFC 4340, 5.6. Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk>
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由 Gerrit Renker 提交于
This updates the option-parsing code with regard to RFC 4340, 5.8: "[..] options with nonsensical lengths (length byte less than two or more than the remaining space in the options portion of the header) MUST be ignored, and any option space following an option with nonsensical length MUST likewise be ignored." Hence in the following cases erratic options will be ignored: 1. The type byte of a multi-byte option is the last byte of the header options (i.e. effective option length of 1). 2. The value of the length byte is less than the minimum 2. This has been changed from previously 3: although no multi-byte option with a length less than 3 yet exists (cf. table 3 in 5.8), a length of 2 is valid. (The switch-statement in dccp_parse has further per-option length checks.) 3. The option length exceeds the length of the remaining option space. Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk>
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由 Wei Yongjun 提交于
RFC4340 states that if a packet is received with an option error (such as a Mandatory Option as the last byte of the option list), the endpoint should repond with a Reset. In the LISTEN and RESPOND states, the endpoint correctly reponds with Reset, while in the REQUEST/OPEN states, packets with option errors are just ignored. The packet sequence is as follows: Case 1: Endpoint A Endpoint B (CLOSED) (CLOSED) <---------------- REQUEST RESPONSE -----------------> (*1) (with invalid option) <---------------- RESET (with Reset Code 5, "Option Error") (*1) currently just ignored, no Reset is sent Case 2: Endpoint A Endpoint B (OPEN) (OPEN) DATA-ACK -----------------> (*2) (with invalid option) <---------------- RESET (with Reset Code 5, "Option Error") (*2) currently just ignored, no Reset is sent This patch fixes the problem, by generating a Reset instead of silently ignoring option errors. Signed-off-by: NWei Yongjun <yjwei@cn.fujitsu.com> Acked-by: NArnaldo Carvalho de Melo <acme@redhat.com> Acked-by: NGerrit Renker <gerrit@erg.abdn.ac.uk>
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由 Julius Volz 提交于
After integrating ESP into ip_vs_proto_ah, rename it (and the references to it) to ip_vs_proto_ah_esp.c and delete the old ip_vs_proto_esp.c. Signed-off-by: NJulius Volz <juliusv@google.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Julius Volz 提交于
Rename all ah_* functions to ah_esp_* (and adjust comments). Move ESP protocol definition into ip_vs_proto_ah.c and remove all usage of ip_vs_proto_esp.c. Make the compilation of ip_vs_proto_ah.c dependent on a new config variable, IP_VS_PROTO_AH_ESP, which is selected either by IP_VS_PROTO_ESP or IP_VS_PROTO_AH. Only compile the selected protocols' structures within this file. Signed-off-by: NJulius Volz <juliusv@google.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
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- 23 8月, 2008 28 次提交
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由 Ilpo Järvinen 提交于
Some duplicated code lying around. Located with my suffix tree tool. Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ilpo Järvinen 提交于
Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ilpo Järvinen 提交于
Large block of code duplication removed. Sadly, the return value thing is a bit tricky here but it seems the most sensible way to return positive from validator on success rather than negative. Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ron Rindjunsky 提交于
This patch adds a direct probe request as first step in the association flow if data we have is not up to date. Motivation of this step is to make sure that the bss information we have is correct, since last scan could have been done a while ago, and beacons do not fully answer this need as there are potential differences between them and probe responses (e.g. WMM parameter element) Signed-off-by: NRon Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: NTomas Winkler <tomas.winkler@intel.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Ron Rindjunsky 提交于
This patch fixes noticed problem in noisy environments of 50+ APs that scan fails to find the requested AP on first try, which leads to connection refusal. second scan has empirically proven to fix this problem in almost all cases. Signed-off-by: NRon Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: NEsti Kummer <ester.kummer@intel.com> Signed-off-by: NTomas Winkler <tomas.winkler@intel.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Tomas Winkler 提交于
This patch move add STA_MLME to station mlme state defines. Signed-off-by: NTomas Winkler <tomas.winkler@intel.com> Acked-by: NJohannes Berg <johannes@sipsolutions.net> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Tomas Winkler 提交于
This patch moves filtering statement from ieee80211_rx_bss_info which is called for both beacon and probe to ieee80211_rx_mgmt_probe_resp and save few cycles in beacon parsing. Signed-off-by: NTomas Winkler <tomas.winkler@intel.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Jasper Bryant-Greene 提交于
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: NJasper Bryant-Greene <jasper@amiton.co.nz> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Jasper Bryant-Greene 提交于
ETH_P_PAE belongs in if_ether.h with the other ETH_P_* definitions. This patch moves it there. Signed-off-by: NJasper Bryant-Greene <jasper@amiton.co.nz> Acked-by: NJohannes Berg <johannes@sipsolutions.net> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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While it is interesting to not add last-enum-markers because it allows gcc to warn us of switch() statements missing a valid state, we really should be handling memory corruption on a rfkill state with default clauses, anyway. So add RFKILL_STATE_MAX and use it where applicable. It makes for safer code in the long run. Signed-off-by: NHenrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: NIvo van Doorn <IvDoorn@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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rfkill is not a small, mere detail in wireless support. Once it starts supporting rfkill and users start counting on that support, a wireless device is at risk of operating in dangerous conditions should rfkill support fail to properly activate. Therefore, add the required __must_check annotations on some key functions of the rfkill API, for which the wireless drivers absolutely MUST handle the failure mode safely in order to avoid a potentially dangerous situation where the wireless transmitter is left enabled when the user don't want it to. Signed-off-by: NHenrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: NIvo van Doorn <IvDoorn@gmail.com> Cc: Matthew Garrett <mjg@redhat.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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Add a second set of global states, "rfkill_default_states", to track the state that will be used when the first rfkill class of a given type is registered, and also to save "undo" information when rfkill_epo is called. Add a new exported function, rfkill_set_default(), which can be used by platform drivers to restore radio state saved by the platform across reboots or shutdown. Also, fix rfkill_epo to properly update rfkill_states, but still preserve a copy of the state so that we can undo the effect of rfkill_epo later if we want to. Add rfkill_restore_states() to restore rfkill_states from the copy. Signed-off-by: NHenrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: NIvo van Doorn <IvDoorn@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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Detect and abort with -EEXIST if rfkill_register is called twice on the same rfkill struct. And WARN_ON(it) for good measure. While at it, flag when we are adding the first switch of a type, we will need that information later. Signed-off-by: NHenrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: NIvo van Doorn <IvDoorn@gmail.com> Cc: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Luis Carlos Cobo 提交于
Originally by Johannes Berg. This patch adds support for devices that do not report their MAC address until the firmware is loaded. While the address is not known, a multicast on is used. Signed-off-by: NLuis Carlos Cobo <luisca@cozybit.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Harvey Harrison 提交于
All users are gone now. Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Harvey Harrison 提交于
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Harvey Harrison 提交于
Remove the last users of the rx/tx_data->fc data members and use the le16 frame_control from the header directly. Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Harvey Harrison 提交于
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Harvey Harrison 提交于
All users have been moved over to the version taking a le16 frame control rather than a cpu-endian value. Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Harvey Harrison 提交于
Those functions that still use ieee80211_get_hdrlen are moved over to use the little endian frame control. Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Harvey Harrison 提交于
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Harvey Harrison 提交于
linux/ieee80211.h now has IEEE80211_QOS_CTL_LEN for this purpose. Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Harvey Harrison 提交于
ieee80211_get_hdrlen_from_skb internally checks the skb is long enough to hold the full ieee80211_hdr, else it returns zero. Use ieee80211_hdrlen which always returns the hdrlen and check the remaining room in the skb explicitly when removing encryption headers or the qos control field. Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Bruno Randolf 提交于
use the rates ERP flag to derive CCK or OFDM modulation for the radiotap header. (it might be more correct to get this information from the hardware itself, but it seems safe to assume this in most practical cases.) Signed-off-by: NBruno Randolf <br1@einfach.org> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Bruno Randolf 提交于
and use it for the radiotap header Signed-off-by: NBruno Randolf <br1@einfach.org> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Tomas Winkler 提交于
This patch adds ieee80211_queue_stopped that let drivers to query queue status Signed-off-by: NTomas Winkler <tomas.winkler@intel.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Robert P. J. Day 提交于
Use "menuconfig" to make wireless support one-click selectable. Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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由 Julia Lawall 提交于
Converts a test in error handling code to a sequence of labels. The semantic match that found the problem is: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E,E1,E2; @@ E = alloc_etherdev(...) ... when != E = E1 if (...) { ... free_netdev(E); ... return ...; } ... when != E = E2 ( if (...) { ... when != free_netdev(E); return dev; } | * if (...) { ... when != free_netdev(E); return ...; } | register_netdev(E) ) // </smpl> Signed-off-by: NJulia Lawall <julia@diku.dk> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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- 21 8月, 2008 2 次提交
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由 Jarek Poplawski 提交于
dev_deactivate() can skip rescheduling of a qdisc by qdisc_watchdog() or other timer calling netif_schedule() after dev_queue_deactivate(). We prevent this checking aliveness before scheduling the timer. Since during deactivation the root qdisc is available only as qdisc_sleeping additional accessor qdisc_root_sleeping() is created. With feedback from Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NJarek Poplawski <jarkao2@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
All of the SCTP-AUTH socket options could cause a panic if the extension is disabled and the API is envoked. Additionally, there were some additional assumptions that certain pointers would always be valid which may not always be the case. This patch hardens the API and address all of the crash scenarios. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 19 8月, 2008 1 次提交
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由 David S. Miller 提交于
If dev_deactivate() is trying to quiesce the queue, it is theoretically possible for another cpu to livelock trying to process that queue. This happens because dev_deactivate() grabs the queue spinlock as it checks the queue state, whereas net_tx_action() does a trylock and reschedules the qdisc if it hits the lock. This breaks the livelock by adding a check on __QDISC_STATE_DEACTIVATED to net_tx_action() when the trylock fails. Based upon feedback from Herbert Xu and Jarek Poplawski. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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