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2013-04-16mac80211: parse VHT channel switch IEsJohannes Berg8-18/+53
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 <[email protected]>
2013-04-16mac80211: handle extended channel switch announcementJohannes Berg2-4/+43
Handle the (public) extended channel switch announcement action frames. Parts of the data in these frames isn't really in IEs, but put it into the elems struct anyway to simplify the handling. Signed-off-by: Johannes Berg <[email protected]>
2013-04-16mac80211: support secondary channel offset in CSAJohannes Berg4-20/+70
Add support for the secondary channel offset IE in channel switch announcements. This is necessary for proper handling of CSA on HT access points. For this to work it is also necessary to convert everything here to use chandef structs instead of just channels. The driver updates aren't really correct though. In particular, the TI wl18xx driver update can't possibly be right since it just ignores the new channel width for lack of firmware API. Signed-off-by: Johannes Berg <[email protected]>
2013-04-16mac80211: support extended channel switchJohannes Berg3-26/+59
Support extended channel switch when the operating class is one of the global operating classes as defined in Annex E of 802.11-2012. If it isn't, disconnect from the AP instead. Signed-off-by: Johannes Berg <[email protected]>
2013-04-16cfg80211: add ieee80211_operating_class_to_bandJohannes Berg1-0/+20
This function converts a (global only!) operating class to an internal band identifier. This will be needed for extended channel switch support. Signed-off-by: Johannes Berg <[email protected]>
2013-04-16mac80211: unify CSA action frame/beacon processingJohannes Berg3-36/+43
CSA action frame content should be processed as variable IEs rather than fixed to make it extensible. Unify the code and process them just like CSA in beacons to make it easier to extend for HT/VHT. Signed-off-by: Johannes Berg <[email protected]>
2013-04-16mac80211: use second center_freq segment only in 80+80Johannes Berg1-6/+4
The field is otherwise reserved, so we shouldn't read and reject it, though any sane system will probably have to set it to 0 anyway. Signed-off-by: Johannes Berg <[email protected]>
2013-04-16wireless: regulatory: fix channel disabling race conditionJohannes Berg1-1/+1
When a full scan 2.4 and 5 GHz scan is scheduled, but then the 2.4 GHz part of the scan disables a 5.2 GHz channel due to, e.g. receiving country or frequency information, that 5.2 GHz channel might already be in the list of channels to scan next. Then, when the driver checks if it should do a passive scan, that will return false and attempt an active scan. This is not only wrong but can also lead to the iwlwifi device firmware crashing since it checks regulatory as well. Fix this by not setting the channel flags to just disabled but rather OR'ing in the disabled flag. That way, even if the race happens, the channel will be scanned passively which is still (mostly) correct. Cc: [email protected] Signed-off-by: Johannes Berg <[email protected]>
2013-04-15openvswitch: Use generic struct pcpu_tstats.Pravin B Shelar2-20/+13
Rather than defining ovs specific stats struct (vport_percpu_stats), we can use existing pcpu_tstats to achieve exactly same functionality. Signed-off-by: Pravin B Shelar <[email protected]> Signed-off-by: Jesse Gross <[email protected]>
2013-04-15openvswitch: Simplify datapath locking.Pravin B Shelar7-167/+298
Currently OVS uses combination of genl and rtnl lock to protect datapath state. This was done due to networking stack locking. But this has complicated locking and there are few lock ordering issues with new tunneling protocols. Following patch simplifies locking by introducing new ovs mutex and now this lock is used to protect entire ovs state. Signed-off-by: Pravin B Shelar <[email protected]> Signed-off-by: Jesse Gross <[email protected]>
2013-04-15net: add dev_uc_sync_multiple() and dev_mc_sync_multiple() apiVlad Yasevich1-42/+168
The current implementation of dev_uc_sync/unsync() assumes that there is a strict 1-to-1 relationship between the source and destination of the sync. In other words, once an address has been synced to a destination device, it will not be synced to any other device through the sync API. However, there are some virtual devices that aggreate a number of lower devices and need to sync addresses to all of them. The current API falls short there. This patch introduces a new dev_uc_sync_multiple() api that can be called in the above circumstances and allows sync to work for every invocation. CC: Jiri Pirko <[email protected]> Signed-off-by: Vlad Yasevich <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-15net: sctp: minor: make sctp_ep_common's member 'dead' a boolDaniel Borkmann2-4/+4
Since dead only holds two states (0,1), make it a bool instead of a 'char', which is more appropriate for its purpose. Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Vlad Yasevich <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-15net: sctp: remove sctp_ep_common struct member 'malloced'Daniel Borkmann2-13/+5
There is actually no need to keep this member in the structure, because after init it's always 1 anyway, thus always kfree called. This seems to be an ancient leftover from the very initial implementation from 2.5 times. Only in case the initialization of an association fails, we leave base.malloced as 0, but we nevertheless kfree it in the error path in sctp_association_new(). Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Vlad Yasevich <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-15esp4: fix error return code in esp_output()Wei Yongjun1-3/+3
Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Signed-off-by: Wei Yongjun <[email protected]> Acked-by: Steffen Klassert <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-15bridge: make user modified path cost stickystephen hemminger3-1/+4
Keep a STP port path cost value if it was set by a user. Don't replace it with the link-speed based path cost whenever the link goes down and comes back up. Reported-by: Roopa Prabhu <[email protected]> Signed-off-by: Stephen Hemminger <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-14Merge 3.9-rc7 intp tty-nextGreg Kroah-Hartman56-193/+462
We want the fixes here. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2013-04-14net: tcp_memcontrol: minor: remove unused variableDaniel Borkmann1-1/+0
Commit 10b96f7306e5 (``tcp_memcontrol: remove a redundant statement in tcp_destroy_cgroup()'') says ``We read the value but make no use of it.'', but forgot to remove the variable declaration as well. This was a follow-up commit of 3f1346193 (``memcg: decrement static keys at real destroy time'') that removed the read of variable 'val'. This fixes therefore: CC net/ipv4/tcp_memcontrol.o net/ipv4/tcp_memcontrol.c: In function ‘tcp_destroy_cgroup’: net/ipv4/tcp_memcontrol.c:67:6: warning: unused variable ‘val’ [-Wunused-variable] Signed-off-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-14net: sock: make sock_tx_timestamp voidDaniel Borkmann6-22/+14
Currently, sock_tx_timestamp() always returns 0. The comment that describes the sock_tx_timestamp() function wrongly says that it returns an error when an invalid argument is passed (from commit 20d4947353be, ``net: socket infrastructure for SO_TIMESTAMPING''). Make the function void, so that we can also remove all the unneeded if conditions that check for such a _non-existant_ error case in the output path. Signed-off-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-14ipv6: statically link register_inet6addr_notifier()Cong Wang2-21/+22
Tomas reported the following build error: net/built-in.o: In function `ieee80211_unregister_hw': (.text+0x10f0e1): undefined reference to `unregister_inet6addr_notifier' net/built-in.o: In function `ieee80211_register_hw': (.text+0x10f610): undefined reference to `register_inet6addr_notifier' make: *** [vmlinux] Error 1 when built IPv6 as a module. So we have to statically link these symbols. Reported-by: Tomas Melin <[email protected]> Cc: Tomas Melin <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: YOSHIFUJI Hidaki <[email protected]> Signed-off-by: Cong Wang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-14SUNRPC: Allow rpc_create() to request that TCP slots be unlimitedTrond Myklebust2-1/+7
This is mainly for use by NFSv4.1, where the session negotiation ultimately wants to decide how many RPC slots we can fill. Signed-off-by: Trond Myklebust <[email protected]>
2013-04-14SUNRPC: Fix a livelock problem in the xprt->backlog queueTrond Myklebust2-4/+74
This patch ensures that we throttle new RPC requests if there are requests already waiting in the xprt->backlog queue. The reason for doing this is to fix livelock issues that can occur when an existing (high priority) task is waiting in the backlog queue, gets woken up by xprt_free_slot(), but a new task then steals the slot. Signed-off-by: Trond Myklebust <[email protected]>
2013-04-13tcp: tcp_tso_segment() small optimizationEric Dumazet1-2/+5
We can move th->check computation out of the loop, as compiler doesn't know each skb initially share same tcp headers after skb_segment() Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-12tcp: GSO should be TSQ friendlyEric Dumazet2-1/+13
I noticed that TSQ (TCP Small queues) was less effective when TSO is turned off, and GSO is on. If BQL is not enabled, TSQ has then no effect. It turns out the GSO engine frees the original gso_skb at the time the fragments are generated and queued to the NIC. We should instead call the tcp_wfree() destructor for the last fragment, to keep the flow control as intended in TSQ. This effectively limits the number of queued packets on qdisc + NIC layers. Signed-off-by: Eric Dumazet <[email protected]> Cc: Tom Herbert <[email protected]> Cc: Yuchung Cheng <[email protected]> Cc: Nandita Dukkipati <[email protected]> Cc: Neal Cardwell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-12TTY: ircomm: fix DTR being raised on hang upJohan Hovold1-1/+1
Make sure to check ASYNC_INITIALISED before raising DTR when waking up from blocked open in ircomm_tty_block_til_ready. Currently DTR could get raised at hang up as a blocked process would raise DTR unconditionally before checking for hang up and returning. Signed-off-by: Johan Hovold <[email protected]> Acked-by: David S. Miller <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2013-04-12act_csum: fix possible use after freeEric Dumazet1-14/+25
tcf_csum_skb_nextlayer() / pskb_may_pull() can change skb->head, so we must be careful not keeping pointers to previous headers. Signed-off-by: Eric Dumazet <[email protected]> Cc: Jamal Hadi Salim <[email protected]> Cc: Grégoire Baron <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-12net/802/mrp: fix possible race condition when calling mrp_pdu_queue()David Ward1-0/+4
(Adapted from a very similar change to net/802/garp.c by Cong Wang.) mrp_pdu_queue() should ways be called with the applicant spin lock. mrp_uninit_applicant() only holds the rtnl lock which is not enough; a race is possible because mrp_rcv() is called in BH context: mrp_rcv() |->mrp_pdu_parse_msg() |->mrp_pdu_parse_vecattr() |->mrp_pdu_parse_vecattr_event() |-> mrp_attr_event() |-> mrp_pdu_append_vecattr_event() |-> mrp_pdu_queue() Cc: Cong Wang <[email protected]> Cc: Eric Dumazet <[email protected]> Signed-off-by: David Ward <[email protected]> Acked-by: Cong Wang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-12Merge branch 'master' of ↵David S. Miller7-44/+92
git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf into netfilter Pablo Neira Ayuso says: ==================== The following patchset contains late netfilter fixes for your net tree, they are: * Don't drop segmented TCP packets in the SIP helper, we've got reports from users that this was breaking communications when the SIP phone messages are larger than the MTU, from Patrick McHardy. * Fix refcount leak in the ipset list set, from Jozsef Kadlecsik. * On hash set resizing, the nomatch flag was lost, thus entirely inverting the logic of the set matching, from Jozsef Kadlecsik. * Fix crash on NAT modules removal. Timer expiration may race with the module cleanup exit path while deleting conntracks, from Florian Westphal. ==================== Signed-off-by: David S. Miller <[email protected]>
2013-04-12Merge branch 'for-john' of ↵John W. Linville1-4/+20
git://x-git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
2013-04-12NFC: RFKILL supportSamuel Ortiz1-0/+38
All NFC devices will now get proper RFKILL support as long as they provide some dev_up and dev_down hooks. Rfkilling an NFC device will bring it down while it is left to userspace to bring it back up when being rfkill unblocked. This is very similar to what Bluetooth does. Acked-by: Marcel Holtmann <[email protected]> Signed-off-by: Samuel Ortiz <[email protected]>
2013-04-12rfkill: Add NFC to the list of supported radiosSamuel Ortiz1-1/+3
And return the proper string for it. Acked-by: Johannes Berg <[email protected]> Acked-by: Marcel Holtmann <[email protected]> Signed-off-by: Samuel Ortiz <[email protected]>
2013-04-12netfilter: nf_nat: fix race when unloading protocol modulesFlorian Westphal1-33/+7
following oops was reported: RIP: 0010:[<ffffffffa03227f2>] [<ffffffffa03227f2>] nf_nat_cleanup_conntrack+0x42/0x70 [nf_nat] RSP: 0018:ffff880202c63d40 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801ac7bec28 RCX: ffff8801d0eedbe0 RDX: dead000000200200 RSI: 0000000000000011 RDI: ffffffffa03265b8 [..] Call Trace: [..] [<ffffffffa02febed>] destroy_conntrack+0xbd/0x110 [nf_conntrack] Happens when a conntrack timeout expires right after first part of the nat cleanup has completed (bysrc hash removal), but before part 2 has completed (re-initialization of nat area). [ destroy callback tries to delete bysrc again ] Patrick suggested to just remove the affected conntracks -- the connections won't work properly anyway without nat transformation. So, lets do that. Reported-by: CAI Qian <[email protected]> Cc: Patrick McHardy <[email protected]> Signed-off-by: Florian Westphal <[email protected]> Acked-by: Patrick McHardy <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
2013-04-12Revert "netprio_cgroup: make local table static"David S. Miller1-1/+1
This reverts commit 763eff57de893a27f8f18855f17033c92598c423. It causes build regressions, as per Stephen Rothwell: ==================== After merging the final tree, today's linux-next build (powerpc allyesconfig) failed like this: net/core/netprio_cgroup.c:250:29: error: static declaration of 'net_prio_subsys' follows non-static declaration include/linux/cgroup_subsys.h:71:1: note: previous declaration of 'net_prio_subsys' was here ==================== Reported-by: Stephen Rothwell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-11tcp: Reallocate headroom if it would overflow csum_startThomas Graf1-2/+6
If a TCP retransmission gets partially ACKed and collapsed multiple times it is possible for the headroom to grow beyond 64K which will overflow the 16bit skb->csum_start which is based on the start of the headroom. It has been observed rarely in the wild with IPoIB due to the 64K MTU. Verify if the acking and collapsing resulted in a headroom exceeding what csum_start can cover and reallocate the headroom if so. A big thank you to Jim Foraker <[email protected]> and the team at LLNL for helping out with the investigation and testing. Reported-by: Jim Foraker <[email protected]> Signed-off-by: Thomas Graf <[email protected]> Acked-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-11Merge branch 'master' of ↵David S. Miller5-6/+28
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next Steffen Klassert says: ==================== 1) Allow to avoid copying DSCP during encapsulation by setting a SA flag. From Nicolas Dichtel. 2) Constify the netlink dispatch table, no need to modify it at runtime. From Mathias Krause. ==================== Signed-off-by: David S. Miller <[email protected]>
2013-04-11tcp: incoming connections might use wrong route under synfloodDmitry Popov1-2/+2
There is a bug in cookie_v4_check (net/ipv4/syncookies.c): flowi4_init_output(&fl4, 0, sk->sk_mark, RT_CONN_FLAGS(sk), RT_SCOPE_UNIVERSE, IPPROTO_TCP, inet_sk_flowi_flags(sk), (opt && opt->srr) ? opt->faddr : ireq->rmt_addr, ireq->loc_addr, th->source, th->dest); Here we do not respect sk->sk_bound_dev_if, therefore wrong dst_entry may be taken. This dst_entry is used by new socket (get_cookie_sock -> tcp_v4_syn_recv_sock), so its packets may take the wrong path. Signed-off-by: Dmitry Popov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2013-04-11Bluetooth: Reject SCO when hci connection timeoutsClaudio Takahasi1-0/+12
This patch sends Reject Synchronous Connection Request Command when hci_conn_timeout is triggered, and the SCO connection is in BT_CONNECT2 state. It prevents inconsistency if the remote host doesn't implement properly the timeout for the connection request, and it removes the connection reference left when the socket is closed for incoming SCO connections. [ 2650.129080] sco_sock_release: sock ffff8801ca417400, sk ffff88020c408800 [ 2650.129092] sco_sock_clear_timer: sock ffff88020c408800 state 6 [ 2650.129101] __sco_sock_close: sk ffff88020c408800 state 6 socket ffff8801ca417400 [ 2650.129108] sco_chan_del: sk ffff88020c408800, conn ffff8801c650ea20, err 104 [ 2650.129114] hci_conn_put: hcon ffff88020c40a800 orig refcnt 1 [ 2650.129128] sco_sock_kill: sk ffff88020c408800 state 9 [ 2650.129135] sco_sock_destruct: sk ffff88020c408800 [ 2650.138468] hci_conn_timeout: hcon ffff88020c40a800 state BT_CONNECT2 Signed-off-by: Claudio Takahasi <[email protected]> Signed-off-by: Vinicius Costa Gomes <[email protected]> Signed-off-by: Gustavo Padovan <[email protected]>
2013-04-11Bluetooth: Remove unneeded parameterClaudio Takahasi1-5/+5
This patch removes the status parameter of the l2cap_conn_add function. The parameter 'status' is always 0. Signed-off-by: Claudio Takahasi <[email protected]> Signed-off-by: Gustavo Padovan <[email protected]>
2013-04-11Bluetooth: Minor coding style fixClaudio Takahasi1-2/+1
This patch removes unneeded initialization and empty line. Signed-off-by: Claudio Takahasi <[email protected]> Signed-off-by: Gustavo Padovan <[email protected]>
2013-04-11Bluetooth: Use GFP_KERNEL in sco_conn_addClaudio Takahasi1-1/+1
This patch changes the memory allocation flags in the sco_conn_add function, replacing the type to GFP_KERNEL. This function is executed in process context and it is not called inside an atomic section. Signed-off-by: Claudio Takahasi <[email protected]> Signed-off-by: Gustavo Padovan <[email protected]>
2013-04-11Bluetooth: Fix SCO connection referenceClaudio Takahasi1-1/+0
This patch fixes decrementing SCO connection reference right after stablishing the SCO connection with defer setup enabled. The dump below shows a disconnection command with handle 0, the connection is still in BT_CONNECT2 state and there isn't a handle associated with it. < HCI Command: Accept Synchronous Connection (0x01|0x0029) plen 21 bdaddr 78:47:1D:B3:72:6C > HCI Event: Command Status (0x0f) plen 4 Accept Synchronous Connection (0x01|0x0029) status 0x00 ncmd 1 < HCI Command: Disconnect (0x01|0x0006) plen 3 handle 0 reason 0x13 Reason: Remote User Terminated Connection > HCI Event: Command Status (0x0f) plen 4 Disconnect (0x01|0x0006) status 0x00 ncmd 1 > HCI Event: Synchronous Connect Complete (0x2c) plen 17 status 0x00 handle 46 bdaddr 78:47:1D:B3:72:6C type eSCO Air mode: CVSD < SCO data: handle 46 flags 0x00 dlen 48 Signed-off-by: Claudio Takahasi <[email protected]> Signed-off-by: Vinicius Costa Gomes <[email protected]> Signed-off-by: Gustavo Padovan <[email protected]>
2013-04-11Bluetooth: rename hci_conn_put to hci_conn_dropDavid Herrmann6-31/+31
We use _get() and _put() for device ref-counting in the kernel. However, hci_conn_put() is _not_ used for ref-counting, hence, rename it to hci_conn_drop() so we can later fix ref-counting and introduce hci_conn_put(). hci_conn_hold() and hci_conn_put() are currently used to manage how long a connection should be held alive. When the last user drops the connection, we spawn a delayed work that performs the disconnect. Obviously, this has nothing to do with ref-counting for the _object_ but rather for the keep-alive of the connection. But we really _need_ proper ref-counting for the _object_ to allow connection-users like rfcomm-tty, HIDP or others. Signed-off-by: David Herrmann <[email protected]> Acked-by: Marcel Holtmann <[email protected]> Signed-off-by: Gustavo Padovan <[email protected]>
2013-04-11NFC: Prevent polling when device is downSamuel Ortiz1-0/+5
Some devices turn radio on whenever they're asked to start a poll. To prevent that from happening, we just don't call into the driver start_poll hook when the NFC device is down. Signed-off-by: Samuel Ortiz <[email protected]>
2013-04-11NFC: llcp: Terminate connection when receiving a DISC on (0,0)Samuel Ortiz1-0/+6
According to the LLCP specs, we must terminate the LLCP link when receiving a DISC with both ssap and dsap set to 0. Signed-off-by: Samuel Ortiz <[email protected]>
2013-04-11NFC: llcp: Remove local_cleanup last argumentSamuel Ortiz1-4/+4
local_cleanup is always called with device set to false as it means the local LLCP is going away. So no need to pass this switch as an argument. Signed-off-by: Samuel Ortiz <[email protected]>
2013-04-11NFC: llcp: Only keep raw sockets alive when the LLCP local leavesSamuel Ortiz1-23/+3
When the MAC goes down, connected and connection less sockets should be notified, but raw sockets should be kept alive. They will get notified only when the physical devices goes away. Signed-off-by: Samuel Ortiz <[email protected]>
2013-04-11NFC: llcp: Add support in getsockopt for RW, LTO, and MIU remote parametersThierry Escande1-1/+22
Useful for LLCP validation tests. Signed-off-by: Thierry Escande <[email protected]> Signed-off-by: Samuel Ortiz <[email protected]>
2013-04-11NFC: llcp: Reset RW, LTO, and MIU remote parameters when link goes downThierry Escande3-2/+13
This resets remote parameters in both local and socket llcp structures when the link goes down. That way, nfc_llcp_getsockopt won't return values corresponding to the previous link parameters. Signed-off-by: Thierry Escande <[email protected]> Signed-off-by: Samuel Ortiz <[email protected]>
2013-04-11NFC: llcp: Use localy stored remote_miu value if not set at socket levelThierry Escande3-3/+12
If remote_miu value is not set in the socket (i.e. connection-less socket) the value stored in the local is used. Signed-off-by: Thierry Escande <[email protected]> Signed-off-by: Samuel Ortiz <[email protected]>
2013-04-11NFC: llcp: Aggregated frames supportThierry Escande2-12/+69
This adds support for AGF PDUs. For each PDU contained in the AGF, a new sk_buff is allocated and dispatched to its corresponding handler. Signed-off-by: Thierry Escande <[email protected]> Signed-off-by: Samuel Ortiz <[email protected]>
2013-04-11NFC: llcp: Fix zero octets length SDU handlingOlivier Guiter1-8/+8
LLCP Validation test #2 (Connection-less information transfer) send a service data unit of zero octets length. This is now handled correctly. Signed-off-by: Olivier Guiter <[email protected]> Signed-off-by: Samuel Ortiz <[email protected]>
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