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2012-03-06netfilter: ebtables: fix wrong name length while copying to user-spaceSantosh Nayak1-3/+13
user-space ebtables expects 32 bytes-long names, but xt_match names use 29 bytes. We have to copy less 29 bytes and then, make sure we fill the remaining bytes with zeroes. Signed-off-by: Santosh Nayak <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-03-06tcp: fix tcp_shift_skb_data() to not shift SACKed data below snd_unaNeal Cardwell1-0/+4
This commit fixes tcp_shift_skb_data() so that it does not shift SACKed data below snd_una. This fixes an issue whose symptoms exactly match reports showing tp->sacked_out going negative since 3.3.0-rc4 (see "WARNING: at net/ipv4/tcp_input.c:3418" thread on netdev). Since 2008 (832d11c5cd076abc0aa1eaf7be96c81d1a59ce41) tcp_shift_skb_data() had been shifting SACKed ranges that were below snd_una. It checked that the *end* of the skb it was about to shift from was above snd_una, but did not check that the end of the actual shifted range was above snd_una; this commit adds that check. Shifting SACKed ranges below snd_una is problematic because for such ranges tcp_sacktag_one() short-circuits: it does not declare anything as SACKed and does not increase sacked_out. Before the fixes in commits cc9a672ee522d4805495b98680f4a3db5d0a0af9 and daef52bab1fd26e24e8e9578f8fb33ba1d0cb412, shifting SACKed ranges below snd_una happened to work because tcp_shifted_skb() was always (incorrectly) passing in to tcp_sacktag_one() an skb whose end_seq tcp_shift_skb_data() had already guaranteed was beyond snd_una. Hence tcp_sacktag_one() never short-circuited and always increased tp->sacked_out in this case. After those two fixes, my testing has verified that shifting SACKed ranges below snd_una could cause tp->sacked_out to go negative with the following sequence of events: (1) tcp_shift_skb_data() sees an skb whose end_seq is beyond snd_una, then shifts a prefix of that skb that is below snd_una (2) tcp_shifted_skb() increments the packet count of the already-SACKed prev sk_buff (3) tcp_sacktag_one() sees the end of the new SACKed range is below snd_una, so it short-circuits and doesn't increase tp->sacked_out (5) tcp_clean_rtx_queue() sees the SACKed skb has been ACKed, decrements tp->sacked_out by this "inflated" pcount that was missing a matching increase in tp->sacked_out, and hence tp->sacked_out underflows to a u32 like 0xFFFFFFFF, which casted to s32 is negative. (6) this leads to the warnings seen in the recent "WARNING: at net/ipv4/tcp_input.c:3418" thread on the netdev list; e.g.: tcp_input.c:3418 WARN_ON((int)tp->sacked_out < 0); More generally, I think this bug can be tickled in some cases where two or more ACKs from the receiver are lost and then a DSACK arrives that is immediately above an existing SACKed skb in the write queue. This fix changes tcp_shift_skb_data() to abort this sequence at step (1) in the scenario above by noticing that the bytes are below snd_una and not shifting them. Signed-off-by: Neal Cardwell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-03-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller4-13/+19
Conflicts: drivers/net/vmxnet3/vmxnet3_drv.c Small vmxnet3 conflict with header size bug fix in 'net'. Signed-off-by: David S. Miller <[email protected]>
2012-03-05bridge: check return value of ipv6_dev_get_saddr()Ulrich Weber1-2/+5
otherwise source IPv6 address of ICMPV6_MGM_QUERY packet might be random junk if IPv6 is disabled on interface or link-local address is not yet ready (DAD). Signed-off-by: Ulrich Weber <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-03-05Merge branch 'for-davem' of ↵David S. Miller17-316/+365
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
2012-03-05mac80211: combine QoS with other BSS changesJohannes Berg4-9/+17
When associating and particularly when disassociating there's no need to notify the driver about changes with multiple calls to bss_info_changed, we should combine the QoS enabling/disabling into the same call as otherwise the driver could get confused about QoS suddenly getting disabled while connected. Signed-off-by: Johannes Berg <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2012-03-05mac80211: use common radiotap code for cooked monitorsJohannes Berg1-30/+9
There's no need to hardcode a subset of the radiotap header for cooked monitor receive, we can just reuse the normal monitor mode radiotap code. This simplifies the code and extends the information available on cooked monitor interfaces. Signed-off-by: Johannes Berg <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2012-03-05cfg80211: Add an attribute to set inactivity timeout in AP modeVasanthakumar Thiagarajan1-0/+8
This patch adds an attribute, NL80211_ATTR_INACTIVITY_TIMEOUT, to set the inactivity timeout which can be used to remove the station in AP mode. This can be passed in NL80211_CMD_START_AP and used by the drivers which have AP MLME in firmware but don't support get_station() properly. To disable inactivity timer in userspace, wpa_s for example, there is a new flag, NL80211_FEATURE_INACTIVITY_TIMER, in nl80211_feature_flags through which drivers can register their capability to use the inactivity timeout to free the stations. Signed-off-by: Vasanthakumar Thiagarajan <[email protected]> Acked-by: Johannes Berg <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2012-03-05mac80211: fix the support of setting non-forwarding entity in MeshChun-Yeow Yeoh2-1/+11
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 <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2012-03-05net: export netdev_stats_to_stats64Eric Dumazet1-4/+5
Some drivers use internal netdev stats member to store part of their stats, yet advertize ndo_get_stats64() to implement some 64bit fields. Allow them to use netdev_stats_to_stats64() helper to make the copy of netdev stats before they compute their 64bit counters. Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-03-05mac80211: add an rx flag for ignoring a packet's signal strengthFelix Fietkau1-3/+6
For A-MPDU rx it makes sense to only process the signal strength once per aggregate instead of once per subframe. Additonally, some hardware (e.g. Atheros) only provides valid signal strength information for the last subframe. Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2012-03-05mac80211: use compare_ether_addr on MAC addresses instead of memcmpFelix Fietkau10-42/+53
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 <[email protected]> Acked-by: Johannes Berg <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2012-03-05mac80211: use 16 bit alignment for the if_ibss bssid fieldFelix Fietkau1-1/+1
Several MAC address comparison functions assume 16 bit alignment for pointers passed to them. Since the addition of the control_port field, alignment for the IBSS bssid was off by one, causing a severe performance hit on architectures without efficient unaligned access (e.g. MIPS). Signed-off-by: Felix Fietkau <[email protected]> Acked-by: Johannes Berg <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2012-03-05{nl,cfg,mac}80211: Implement RSSI threshold for mesh peeringAshok Nagarajan5-1/+33
Mesh peer links are established only if average rssi of the peer candidate satisfies the threshold. This is not in 802.11s specification but was requested by David Fulgham, an open80211s user. This is a way to avoid marginal peer links with stations that are barely within range. This patch adds a new mesh configuration parameter, mesh_rssi_threshold. This feature is supported only for hardwares that report signal in dBm. Signed-off-by: Ashok Nagarajan <[email protected]> Signed-off-by: Javier Cardona <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2012-03-05mac80211: Fix the generation of PREQs in proactive RANN mechanism of HWMPChun-Yeow Yeoh2-5/+19
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 <[email protected]> Signed-off-by: Javier Cardona <[email protected]> Signed-off-by: Thomas Pedersen <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2012-03-05Merge branch 'master' of ↵John W. Linville17-316/+365
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
2012-03-05Merge branch 'perf/urgent' into perf/coreIngo Molnar49-210/+316
Conflicts: tools/perf/builtin-record.c tools/perf/builtin-top.c tools/perf/perf.h tools/perf/util/top.h Merge reason: resolve these cherry-picking conflicts. Signed-off-by: Ingo Molnar <[email protected]>
2012-03-04rtnetlink: fix rtnl_calcit() and rtnl_dump_ifinfo()Eric Dumazet1-8/+10
nlmsg_parse() might return an error, so test its return value before potential random memory accesses. Errors introduced in commit 115c9b81928 (rtnetlink: Fix problem with buffer allocation) Signed-off-by: Eric Dumazet <[email protected]> Cc: Greg Rose <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-03-04bridge: message age needs to increase, not decrease.Joakim Tjernlund1-1/+1
commit bridge: send proper message_age in config BPDU added this gem: bpdu.message_age = (jiffies - root->designated_age) p->designated_age = jiffies + bpdu->message_age; Notice how bpdu->message_age is negated when reassigned to bpdu.message_age. This causes message age to decrease breaking the STP protocol. Signed-off-by: Joakim Tjernlund <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-03-04bridge: Adjust min age inc for HZ > 256Joakim Tjernlund1-2/+2
min age increment needs to round up its min age tick for all HZ values to guarantee message age is increasing. Signed-off-by: Joakim Tjernlund <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-03-04ppp: Replace uses of <linux/if_ppp.h> with <linux/ppp-ioctl.h>Paul Mackerras3-3/+3
Since all that include/linux/if_ppp.h does is #include <linux/ppp-ioctl.h>, this replaces the occurrences of #include <linux/if_ppp.h> with #include <linux/ppp-ioctl.h>. It also corrects an error in Documentation/networking/l2tp.txt, where it referenced include/linux/if_ppp.h as the source of some definitions that are actually now defined in include/linux/if_pppol2tp.h. Signed-off-by: Paul Mackerras <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-03-03Merge commit 'nfs-for-3.3-4' into nfs-for-nextTrond Myklebust2-3/+12
Conflicts: fs/nfs/nfs4proc.c Back-merge of the upstream kernel in order to fix a conflict with the slotid type conversion and implementation id patches...
2012-03-03tcp: don't fragment SACKed skbs in tcp_mark_head_lost()Neal Cardwell1-0/+1
In tcp_mark_head_lost() we should not attempt to fragment a SACKed skb to mark the first portion as lost. This is for two primary reasons: (1) tcp_shifted_skb() coalesces adjacent regions of SACKed skbs. When doing this, it preserves the sum of their packet counts in order to reflect the real-world dynamics on the wire. But given that skbs can have remainders that do not align to MSS boundaries, this packet count preservation means that for SACKed skbs there is not necessarily a direct linear relationship between tcp_skb_pcount(skb) and skb->len. Thus tcp_mark_head_lost()'s previous attempts to fragment off and mark as lost a prefix of length (packets - oldcnt)*mss from SACKed skbs were leading to occasional failures of the WARN_ON(len > skb->len) in tcp_fragment() (which used to be a BUG_ON(); see the recent "crash in tcp_fragment" thread on netdev). (2) there is no real point in fragmenting off part of a SACKed skb and calling tcp_skb_mark_lost() on it, since tcp_skb_mark_lost() is a NOP for SACKed skbs. Signed-off-by: Neal Cardwell <[email protected]> Acked-by: Ilpo Järvinen <[email protected]> Acked-by: Yuchung Cheng <[email protected]> Acked-by: Nandita Dukkipati <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-03-03dccp: fix bug in sequence number validation during connection setupSamuel Jero4-18/+26
This fixes a bug in the sequence number validation during the initial handshake. The code did not treat the initial sequence numbers ISS and ISR as read-only and did not keep state for GSR and GSS as required by the specification. This causes problems with retransmissions during the initial handshake, causing the budding connection to be reset. This patch now treats ISS/ISR as read-only and tracks GSS/GSR as required. Signed-off-by: Samuel Jero <[email protected]> Signed-off-by: Gerrit Renker <[email protected]>
2012-03-03dccp ccid-3: replace incorrect BUG_ONGerrit Renker1-2/+1
This replaces an unjustified BUG_ON(), which could get triggered under normal conditions: X_calc can be 0 when p > 0. X would in this case be set to the minimum, s/t_mbi. Its replacement avoids t_ipi = 0 (unbounded sending rate). Thanks to Jordi, Victor and Xavier who reported this. Signed-off-by: Gerrit Renker <[email protected]> Acked-by: Ian McDonald <[email protected]>
2012-03-03Bluetooth: Don't force DISCOVERY_STOPPED state in inquiry_cache_flushAndre Guedes1-1/+0
We are not supposed to force DISCOVERY_STOPPED in inquiry_cache_flush because we may break the discovery state machine. For instance, during interleaved discovery, when we are about to start inquiry, the state machine forcibly goes to DISCOVERY_STOPPED while it should stay in DISCOVERY_FINDING state. This problem results in unexpected behaviors such as sending two mgmt_discovering events to userspace (when only one event is expected) and Stop Discovery failures. Signed-off-by: Andre Guedes <[email protected]> Signed-off-by: Johan Hedberg <[email protected]>
2012-03-03Bluetooth: mgmt: Fix updating local name when powering onJohan Hedberg2-16/+14
When powering on we need to apply whatever name has been set through mgmt_set_local_name. The appropriate place for this is mgmt_powered() and not hci_setup() since this needs to be applied also if the HCI init sequence was already completed but the adapter was still "powered off" from a mgmt perspective due the the HCI_AUTO_OFF still being set. Signed-off-by: Johan Hedberg <[email protected]> Acked-by: Marcel Holtmann <[email protected]>
2012-03-03Bluetooth: Remove HCI_PI_MGMT_INIT flag for socketsJohan Hedberg2-11/+8
This flag is of no use right now and is in fact harmful in that it prevents the HCI_MGMT flag to be set for any controllers that may need it after the first one that bluetoothd takes into use (the flag is cleared for the first controller so any subsequent ones through the same bluetoothd mgmt socket never get the HCI_MGMT flag set). Signed-off-by: Johan Hedberg <[email protected]> Acked-by: Marcel Holtmann <[email protected]>
2012-03-02SUNRPC: Add API to acquire source addressChuck Lever1-0/+149
NFSv4.0 clients must send endpoint information for their callback service to NFSv4.0 servers during their first contact with a server. Traditionally on Linux, user space provides the callback endpoint IP address via the "clientaddr=" mount option. During an NFSv4 migration event, it is possible that an FSID may be migrated to a destination server that is accessible via a different source IP address than the source server was. The client must update callback endpoint information on the destination server so that it can maintain leases and allow delegation. Without a new "clientaddr=" option from user space, however, the kernel itself must construct an appropriate IP address for the callback update. Provide an API in the RPC client for upper layer RPC consumers to acquire a source address for a remote. The mechanism used by the mount.nfs command is copied: set up a connected UDP socket to the designated remote, then scrape the source address off the socket. We are careful to select the correct network namespace when setting up the temporary UDP socket. Signed-off-by: Chuck Lever <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-03-02SUNRPC: Move clnt->cl_server into struct rpc_xprtTrond Myklebust4-49/+61
When the cl_xprt field is updated, the cl_server field will also have to change. Since the contents of cl_server follow the remote endpoint of cl_xprt, just move that field to the rpc_xprt. Signed-off-by: Trond Myklebust <[email protected]> [ cel: simplify check_gss_callback_principal(), whitespace changes ] [ cel: forward ported to 3.4 ] Signed-off-by: Chuck Lever <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-03-02SUNRPC: Use RCU to dereference the rpc_clnt.cl_xprt fieldTrond Myklebust5-28/+110
A migration event will replace the rpc_xprt used by an rpc_clnt. To ensure this can be done safely, all references to cl_xprt must now use a form of rcu_dereference(). Special care is taken with rpc_peeraddr2str(), which returns a pointer to memory whose lifetime is the same as the rpc_xprt. Signed-off-by: Trond Myklebust <[email protected]> [ cel: fix lockdep splats and layering violations ] [ cel: forward ported to 3.4 ] [ cel: remove rpc_max_reqs(), add rpc_net_ns() ] Signed-off-by: Chuck Lever <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-03-02Bluetooth: mgmt: Add new error code for invalid indexJohan Hedberg1-3/+3
The index is part of the command header and not its parameters so it makes sense to distinguish this from the invalid parameters error. Signed-off-by: Johan Hedberg <[email protected]> Acked-by: Marcel Holtmann <[email protected]>
2012-03-02Bluetooth: mgmt: Fix command status error code valuesJohan Hedberg1-2/+2
Error codes in the command status should always be from the set of values defined for mgmt and never e.g. POSIX error codes. Signed-off-by: Johan Hedberg <[email protected]> Acked-by: Marcel Holtmann <[email protected]>
2012-03-02Bluetooth: Fix clearing of HCI_PENDING_CLASS flagJohan Hedberg1-1/+1
When doing reset HCI_PENDING_CLASS is one of the flags that should be cleared (since it's used for a pending HCI command and a reset clear all pending commands). Signed-off-by: Johan Hedberg <[email protected]> Acked-by: Marcel Holtmann <[email protected]>
2012-03-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller4-17/+16
Conflicts: drivers/net/ethernet/broadcom/tg3.c Conflicts in the statistics regression bug fix from 'net', but happily Matt Carlson originally posted the fix against 'net-next' so I used that to resolve this. Signed-off-by: David S. Miller <[email protected]>
2012-03-02Bluetooth: Update MGMT and SMP timeout constants to use msecs_to_jiffiesMarcel Holtmann2-6/+4
The MGMT and SMP timeout constants are always used in form of jiffies. So just include the conversion from msecs in the define itself. This has the advantage of making the code where the timeout is used more readable. Signed-off-by: Marcel Holtmann <[email protected]> Signed-off-by: Johan Hedberg <[email protected]>
2012-03-02Bluetooth: Update L2CAP timeout constants to use msecs_to_jiffiesMarcel Holtmann2-13/+7
The L2CAP timeout constants are always used in form of jiffies. So just include the conversion from msecs in the define itself. This has the advantage of making the code where the timeout is used more readable. Signed-off-by: Marcel Holtmann <[email protected]> Signed-off-by: Johan Hedberg <[email protected]>
2012-03-01Bluetooth: mgmt: Centralize message length checksJohan Hedberg1-168/+52
This patch moves the command length information into the command handler table allowing the removal of length checks from the handler functions and doing the check in a single place before calling the handler function. Signed-off-by: Johan Hedberg <[email protected]> Acked-by: Marcel Holtmann <[email protected]>
2012-03-01Bluetooth: mgmt: Move command handlers into a tableJohan Hedberg1-140/+79
By moving the command handlers into a table (the index being equal to the opcode) the lookup is made a bit more efficient. Having a struct to describe each handler also paves the way to add more meta-data for each handler, e.g. the minimum message size for the command and allow handling of common tasks like this in a centralized place. Signed-off-by: Johan Hedberg <[email protected]> Acked-by: Marcel Holtmann <[email protected]>
2012-03-01Bluetooth: mgmt: Initialize HCI_MGMT flag for any commandJohan Hedberg1-4/+6
The read_controller_info is typically the first command that user space sends when taking a controller into use. This is also the reason why this command has been used as the trigger to set the HCI_MGMT flag. However, when not running the user-space daemon and using command line tools it is possible that read_controller_info is not the first controller specific command. This patch moves the HCI_MGMT initialization to a generic place where it will be set for whatever happens to be the first mgmt command targetting a specific controller. Signed-off-by: Johan Hedberg <[email protected]> Acked-by: Marcel Holtmann <[email protected]>
2012-03-01Bluetooth: mgmt: Refactor hci_dev lookup for commandsJohan Hedberg1-490/+274
Almost all mgmt commands need to lookup a struct hci_dev based on the index received within the mgmt headers. It makese therefore sense to look this up in a single place and then just pass the hdev pointer to each command handler function. Signed-off-by: Johan Hedberg <[email protected]> Acked-by: Marcel Holtmann <[email protected]>
2012-03-01Merge branch 'master' of git://1984.lsi.us.es/netDavid S. Miller1-8/+2
2012-03-01Bluetooth: Fix init sequence for some CSR based controllersJohan Hedberg1-1/+21
Some CSR controllers will generate a spontaneous reset during init and just eat up any pending command without sending a command complete for it. This patch solves the issue by just resending whatever was the last sent command. hci_send_cmd is not used since we need to bypass all other commands in the send queue. Signed-off-by: Johan Hedberg <[email protected]> Acked-by: Marcel Holtmann <[email protected]>
2012-03-01Bluetooth: Check capabilities in BR/EDR and LE-Only discoveryAndre Guedes1-2/+8
This patch add an extra check for BR/EDR and LE-Only discovery. This way, we are able to return error immediately if the discovery type requested is not supported by the device. Signed-off-by: Andre Guedes <[email protected]> Acked-by: Marcel Holtmann <[email protected]> Signed-off-by: Johan Hedberg <[email protected]>
2012-02-29rtnetlink: Fix VF IFLA policyGreg Rose1-0/+2
Add VF spoof check to IFLA policy. The original patch I submitted to add the spoof checking feature to rtnl failed to add the proper policy rule that identifies the data type and len. This patch corrects that oversight. No bugs have been reported against this but it may cause some problem for the netlink message parsing that uses the policy table. CC: [email protected] Signed-off-by: Greg Rose <[email protected]> Tested-by: Sibai Li <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]>
2012-02-29Merge branch 'tipc_net-next' of ↵David S. Miller20-349/+288
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
2012-03-01Bluetooth: mgmt: Add missing hci_dev locking to set_le()Johan Hedberg1-7/+10
The set_le() function was missing hci_dev locking which is e.g. critical for the mgmt pending command adding/removing. Acked-by: Gustavo F. Padovan <[email protected]> Signed-off-by: Johan Hedberg <[email protected]>
2012-03-01Bluetooth: Fix coding style with breaking linesGustavo F. Padovan2-3/+3
Our limit is 80 and broken lines should as right as possible. Signed-off-by: Gustavo F. Padovan <[email protected]>
2012-02-29Merge branch 'master' of ↵John W. Linville2-1/+4
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2012-02-29mac80211: handle non-bufferable MMPDUs correctlyJohannes Berg2-8/+13
This renames the IEEE80211_TX_CTL_POLL_RESPONSE TX flag to IEEE80211_TX_CTL_NO_PS_BUFFER and also uses it for non-bufferable MMPDUs (all MMPDUs but deauth, disassoc and action frames.) Previously, mac80211 would let the MMPDU through but not set the flag so drivers supporting some hardware aids for avoiding the PS races would then reject the frame. Signed-off-by: Johannes Berg <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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