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2012-04-15virtio-net: send gratuitous packets when neededJason Wang2-5/+73
As hypervior does not have the knowledge of guest network configuration, it's better to ask guest to send gratuitous packets when needed. This patch implements VIRTIO_NET_F_GUEST_ANNOUNCE feature: hypervisor would notice the guest when it thinks it's time for guest to announce the link presnece. Guest tests VIRTIO_NET_S_ANNOUNCE bit during config change interrupt and woule send gratuitous packets through netif_notify_peers() and ack the notification through ctrl vq. We need to make sure the atomicy of read and ack in guest otherwise we may ack more times than being notified. This is done through handling the whole config change interrupt in an non-reentrant workqueue. Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-15isdn/hysdn: Convert to kstrtoul_from_userPeter Hüwe1-9/+1
This patch replaces the code for getting an number from a userspace buffer by a simple call to kstroul_from_user. This makes it easier to read and less error prone. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-14ipv6: Remove unused argument to addrconf_dad_start().David S. Miller1-6/+6
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-14net: Fix spelling typo in netMasanari Iida11-12/+12
Correct spelling typo within drivers/net. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-14tcp: Remove redundant code entering quickack modeVijay Subramanian1-2/+0
tcp_enter_quickack_mode() already calls tcp_incr_quickack() and sets icsk->icsk_ack.ato to TCP_ATO_MIN. This patch removes the duplication. Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com> Reviewed-by: Flavio Leitner <fbl@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-14tcp: bind() use stronger condition for bind_conflictAlex Copot4-8/+18
We must try harder to get unique (addr, port) pairs when doing port autoselection for sockets with SO_REUSEADDR option set. We achieve this by adding a relaxation parameter to inet_csk_bind_conflict. When 'relax' parameter is off we return a conflict whenever the current searched pair (addr, port) is not unique. This tries to address the problems reported in patch: 8d238b25b1ec22a73b1c2206f111df2faaff8285 Revert "tcp: bind() fix when many ports are bound" Tests where ran for creating and binding(0) many sockets on 100 IPs. The results are, on average: * 60000 sockets, 600 ports / IP: * 0.210 s, 620 (IP, port) duplicates without patch * 0.219 s, no duplicates with patch * 100000 sockets, 1000 ports / IP: * 0.371 s, 1720 duplicates without patch * 0.373 s, no duplicates with patch * 200000 sockets, 2000 ports / IP: * 0.766 s, 6900 duplicates without patch * 0.768 s, no duplicates with patch * 500000 sockets, 5000 ports / IP: * 2.227 s, 41500 duplicates without patch * 2.284 s, no duplicates with patch Signed-off-by: Alex Copot <alex.mihai.c@gmail.com> Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-14inet: makes syn_ack_timeout mandatoryEric Dumazet4-2/+10
There are two struct request_sock_ops providers, tcp and dccp. inet_csk_reqsk_queue_prune() can avoid testing syn_ack_timeout being NULL if we make it non NULL like syn_ack_timeout Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Gerrit Renker <gerrit@erg.abdn.ac.uk> Cc: dccp@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-14tcp: RFC6298 supersedes RFC2988bisEric Dumazet3-4/+4
Updates some comments to track RFC6298 Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: H.K. Jerry Chu <hkchu@google.com> Cc: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-14net/wan: use module_pci_driverAxel Lin2-24/+2
This patch converts the drivers in drivers/net/wan/* to use module_pci_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: Francois Romieu <romieu@fr.zoreil.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-14net/tokenring: use module_pci_driverAxel Lin4-48/+4
This patch converts the drivers in drivers/net/tokenring/* to use module_pci_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-14tunnel: implement 64 bits statisticsstephen hemminger4-55/+111
Convert the per-cpu statistics kept for GRE, IPIP, and SIT tunnels to use 64 bit statistics. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-14ixgbe: add I2C clock stretchingDon Skidmore2-6/+15
This patch adds support for I2C clock stretching which is required per SFF-8636. Customers with passive DA cables implement clock stretching would fail without this patch. Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-04-14igb: Update version to 3.4.7.Carolyn Wyborny1-2/+2
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-04-14e1000e: cleanup boolean logicBruce Allan6-35/+31
Replace occurrences of 'if (<bool expr> == <1|0>)' with 'if ([!]<bool expr>)' Replace occurrences of '<bool var> = (<non-bool expr>) ? true : false' with '<bool var> = <non-bool expr>'. Replace occurrence of '<bool var> = <non-bool expr>' with '<bool var> = !!<non-bool expr>' While the latter replacement is not really necessary, it is done here for consistency and clarity. No functional changes. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-04-14e1000e: cleanup remaining strings split across multiple linesBruce Allan2-15/+12
Now that split strings generate checkpatch warnings (per Chapter 2 of Documentation/CodingStyle to make it easier to grep the code for the string) cleanup the remaining instances of them in the driver. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-04-14e100: enable transmit time stamping.Richard Cochran1-0/+1
This patch enables software (and phy device) transmit time stamping. Tested on an old PIII laptop with built in NIC. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-04-14e100: Support the get_ts_info ethtool method.Richard Cochran1-0/+1
Signed-off-by: Richard Cochran <richardcochran@gmail.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-04-13bonding: Fixup get_tx_queue() op second arg type.David S. Miller1-1/+1
I missed this when fixing up the warning in the previous commit. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13rtnetlink: ops->get_tx_queue() cannot take a const 'tb'.David S. Miller1-1/+1
net/core/rtnetlink.c: In function ‘rtnl_create_link’: net/core/rtnetlink.c:1645:3: warning: passing argument 2 of ‘ops->get_tx_queues’ from incompatible pointer type [enabled by default] net/core/rtnetlink.c:1645:3: note: expected ‘const struct nlattr **’ but argument is of type ‘struct nlattr **’ Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13Phonet: change maintainer addressRémi Denis-Courmont1-1/+1
nokia.com MX does not cope well with kernel.org. Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13Phonet: missing headers (sparse)Rémi Denis-Courmont1-0/+4
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13Phonet: phonet_net_id can be static (sparse)Rémi Denis-Courmont1-1/+1
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13neighbour: Make neigh_table_init_no_netlink() static.Hiroaki SHIMODA2-3/+1
neigh_table_init_no_netlink() is only used in net/core/neighbour.c file. Signed-off-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13udp: intoduce udp_encap_needed static_keyEric Dumazet3-1/+13
Most machines dont use UDP encapsulation (L2TP) Adds a static_key so that udp_queue_rcv_skb() doesnt have to perform a test if L2TP never setup the encap_rcv on a socket. Idea of this patch came after Simon Horman proposal to add a hook on TCP as well. If static_key is not yet enabled, the fast path does a single JMP . When static_key is enabled, JMP destination is patched to reach the real encap_type/encap_rcv logic, possibly adding cache misses. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Simon Horman <horms@verge.net.au> Cc: dev@openvswitch.org Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13net: WIZnet drivers: fix possible NULL dereferenceMike Sinkovsky2-2/+2
This fixes possible null dereference in probe() function: when both .mac_addr and .link_gpio are unknown, dev.platform_data may be NULL Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mike Sinkovsky <msink@permonline.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13rtnetlink: fix commentsstephen hemminger1-2/+4
Fix spelling and references in rtnetlink. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13rtnetlink & bonding: change args got get_tx_queuesstephen hemminger3-12/+8
Change get_tx_queues, drop unsused arg/return value real_tx_queues, and use return by value (with error) rather than call by reference. Probably bonding should just change to LLTX and the whole get_tx_queues API could disappear! Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13ethernet: replace open-coded ARRAY_SIZE with macroJim Cromie1-1/+1
Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13enic: replace open-coded ARRAY_SIZE with macroJim Cromie1-1/+1
Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13broadcom: replace open-coded ARRAY_SIZE with macroJim Cromie1-2/+1
Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13net: Remove redundant spi driver bus initializationLars-Peter Clausen1-1/+0
In ancient times it was necessary to manually initialize the bus field of an spi_driver to spi_bus_type. These days this is done in spi_driver_register() so we can drop the manual assignment. The patch was generated using the following coccinelle semantic patch: // <smpl> @@ identifier _driver; @@ struct spi_driver _driver = { .driver = { - .bus = &spi_bus_type, }, }; // </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Gabor Juhos <juhosg@openwrt.org> Cc: Frederic Lambert <frdrc66@gmail.com> Cc: netdev@vger.kernel.org Acked-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13net/garp: fix GID rbtree orderingDavid Ward1-4/+4
The comparison operators were backwards in both garp_attr_lookup and garp_attr_create, so the entire GID rbtree was in reverse order. (There was no practical side effect to this though, except that PDUs were sent with attributes listed in reverse order, which is still valid by the protocol. This change is only for clarity.) Signed-off-by: David Ward <david.ward@ll.mit.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13pppoatm: Fix excessive queue bloatDavid Woodhouse1-10/+85
We discovered that PPPoATM has an excessively deep transmit queue. A queue the size of the default socket send buffer (wmem_default) is maintained between the PPP generic core and the ATM device. Fix it to queue a maximum of *two* packets. The one the ATM device is currently working on, and one more for the ATM driver to process immediately in its TX done interrupt handler. The PPP core is designed to feed packets to the channel with minimal latency, so that really ought to be enough to keep the ATM device busy. While we're at it, fix the fact that we were triggering the wakeup tasklet on *every* pppoatm_pop() call. The comment saying "this is inefficient, but doing it right is too hard" turns out to be overly pessimistic... I think :) On machines like the Traverse Geos, with a slow Geode CPU and two high-speed ADSL2+ interfaces, there were reports of extremely high CPU usage which could partly be attributed to the extra wakeups. (The wakeup handling could actually be made a whole lot easier if we stop checking sk->sk_sndbuf altogether. Given that we now only queue *two* packets ever, one wonders what the point is. As it is, you could already deadlock the thing by setting the sk_sndbuf to a value lower than the MTU of the device, and it'd just block for ever.) Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif-hsi: Postpone init of HSI until open()sjur.brandeland@stericsson.com1-52/+45
Do the initialization of the HSI interface when the interface is opened, instead of upon registration. When the interface is closed the HSI interface is de-initialized, allowing other modules to use the HSI interface. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif-hsi: Remove stop/start of queue.sjur.brandeland@stericsson.com1-10/+0
CAIF HSI is currently a virtual device. Stopping/starting the queues is wrong on a virtual device. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif-hsi: robust frame aggregation for HSIDmitry Tarnyagin2-57/+205
Implement aggregation algorithm, combining more data into a single HSI transfer. 4 different traffic categories are supported: 1. TC_PRIO_CONTROL .. TC_PRIO_MAX (CTL) 2. TC_PRIO_INTERACTIVE (VO) 3. TC_PRIO_INTERACTIVE_BULK (VI) 4. TC_PRIO_BESTEFFORT, TC_PRIO_BULK, TC_PRIO_FILLER (BEBK) Signed-off-by: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif: set traffic class for caif packetsDmitry Tarnyagin5-3/+36
Set traffic class for CAIF packets, based on socket priority, CAIF protocol type, or type of message. Traffic class mapping for different packet types: - control: TC_PRIO_CONTROL; - flow control: TC_PRIO_CONTROL; - at: TC_PRIO_CONTROL; - rfm: TC_PRIO_INTERACTIVE_BULK; - other sockets: equals to socket's TC; - network data: no change. Signed-off-by: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif_hsi: use dev_dbg not dev_err for reportingKim Lilliestierna XX1-2/+2
Use dev_dbg instead of dev_err for reporting in cfhsi_wakeup_cb. Signed-off-by: Kim Lilliestierna <kim.xx.lilliestierna@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif-hsi: Free flip_buffer at shutdownsjur.brandeland@stericsson.com1-2/+3
Fix memory leak of RX flip-buffer. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif: Fix memory leakage in the chnl_net.c.Tomasz Gregorek1-3/+6
Added kfree_skb() calls in the chnk_net.c file on the error paths. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13l2tp: don't overwrite source address in l2tp_ip_bind()James Chapman1-1/+2
Applications using L2TP/IP sockets want to be able to bind() an L2TP/IP socket to set the local tunnel id while leaving the auto-assigned source address alone. So if no source address is supplied, don't overwrite the address already stored in the socket. Signed-off-by: James Chapman <jchapman@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13l2tp: fix refcount leak in l2tp_ip socketsJames Chapman1-1/+1
The l2tp_ip socket close handler does not update the module refcount correctly which prevents module unload after the first bind() call on an L2TPv3 IP encapulation socket. Signed-off-by: James Chapman <jchapman@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13net: Fix misplaced parenthesis in virtio_net.cTorsten Kaiser1-3/+2
Commit 2e57b79ccef1ff1422fdf45a9b28fe60f8f084f7 misplaced its parenthesis and now tx_fifo_errors will only be incremented if an ENOMEM error is not written to the syslog. Correct the parenthesis and indentation to the original goal of counting all non ENOMEM errors and ratelimiting only the messages. Signed-of-by: Torsten Kaiser <just.for.lkml@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13net/key/af_key.c: add missing kfree_skbJulia Lawall1-1/+1
At the point of this error-handling code, alloc_skb has succeded, so free the resulting skb by jumping to the err label. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13phonet: Sort out initiailziation and cleanup code.Eric W. Biederman1-19/+2
Recently an oops was reported in phonet if there was a failure during network namespace creation. [ 163.733755] ------------[ cut here ]------------ [ 163.734501] kernel BUG at include/net/netns/generic.h:45! [ 163.734501] invalid opcode: 0000 [#1] PREEMPT SMP [ 163.734501] CPU 2 [ 163.734501] Pid: 19145, comm: trinity Tainted: G W 3.4.0-rc1-next-20120405-sasha-dirty #57 [ 163.734501] RIP: 0010:[<ffffffff824d6062>] [<ffffffff824d6062>] phonet_pernet+0x182/0x1a0 [ 163.734501] RSP: 0018:ffff8800674d5ca8 EFLAGS: 00010246 [ 163.734501] RAX: 000000003fffffff RBX: 0000000000000000 RCX: ffff8800678c88d8 [ 163.734501] RDX: 00000000003f4000 RSI: ffff8800678c8910 RDI: 0000000000000282 [ 163.734501] RBP: ffff8800674d5cc8 R08: 0000000000000000 R09: 0000000000000000 [ 163.734501] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880068bec920 [ 163.734501] R13: ffffffff836b90c0 R14: 0000000000000000 R15: 0000000000000000 [ 163.734501] FS: 00007f055e8de700(0000) GS:ffff88007d000000(0000) knlGS:0000000000000000 [ 163.734501] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 163.734501] CR2: 00007f055e6bb518 CR3: 0000000070c16000 CR4: 00000000000406e0 [ 163.734501] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 163.734501] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 163.734501] Process trinity (pid: 19145, threadinfo ffff8800674d4000, task ffff8800678c8000) [ 163.734501] Stack: [ 163.734501] ffffffff824d5f00 ffffffff810e2ec1 ffff880067ae0000 00000000ffffffd4 [ 163.734501] ffff8800674d5cf8 ffffffff824d667a ffff880067ae0000 00000000ffffffd4 [ 163.734501] ffffffff836b90c0 0000000000000000 ffff8800674d5d18 ffffffff824d707d [ 163.734501] Call Trace: [ 163.734501] [<ffffffff824d5f00>] ? phonet_pernet+0x20/0x1a0 [ 163.734501] [<ffffffff810e2ec1>] ? get_parent_ip+0x11/0x50 [ 163.734501] [<ffffffff824d667a>] phonet_device_destroy+0x1a/0x100 [ 163.734501] [<ffffffff824d707d>] phonet_device_notify+0x3d/0x50 [ 163.734501] [<ffffffff810dd96e>] notifier_call_chain+0xee/0x130 [ 163.734501] [<ffffffff810dd9d1>] raw_notifier_call_chain+0x11/0x20 [ 163.734501] [<ffffffff821cce12>] call_netdevice_notifiers+0x52/0x60 [ 163.734501] [<ffffffff821cd235>] rollback_registered_many+0x185/0x270 [ 163.734501] [<ffffffff821cd334>] unregister_netdevice_many+0x14/0x60 [ 163.734501] [<ffffffff823123e3>] ipip_exit_net+0x1b3/0x1d0 [ 163.734501] [<ffffffff82312230>] ? ipip_rcv+0x420/0x420 [ 163.734501] [<ffffffff821c8515>] ops_exit_list+0x35/0x70 [ 163.734501] [<ffffffff821c911b>] setup_net+0xab/0xe0 [ 163.734501] [<ffffffff821c9416>] copy_net_ns+0x76/0x100 [ 163.734501] [<ffffffff810dc92b>] create_new_namespaces+0xfb/0x190 [ 163.734501] [<ffffffff810dca21>] unshare_nsproxy_namespaces+0x61/0x80 [ 163.734501] [<ffffffff810afd1f>] sys_unshare+0xff/0x290 [ 163.734501] [<ffffffff8187622e>] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 163.734501] [<ffffffff82665539>] system_call_fastpath+0x16/0x1b [ 163.734501] Code: e0 c3 fe 66 0f 1f 44 00 00 48 c7 c2 40 60 4d 82 be 01 00 00 00 48 c7 c7 80 d1 23 83 e8 48 2a c4 fe e8 73 06 c8 fe 48 85 db 75 0e <0f> 0b 0f 1f 40 00 eb fe 66 0f 1f 44 00 00 48 83 c4 10 48 89 d8 [ 163.734501] RIP [<ffffffff824d6062>] phonet_pernet+0x182/0x1a0 [ 163.734501] RSP <ffff8800674d5ca8> [ 163.861289] ---[ end trace fb5615826c548066 ]--- After investigation it turns out there were two issues. 1) Phonet was not implementing network devices but was using register_pernet_device instead of register_pernet_subsys. This was allowing there to be cases when phonenet was not initialized and the phonet net_generic was not set for a network namespace when network device events were being reported on the netdevice_notifier for a network namespace leading to the oops above. 2) phonet_exit_net was implementing a confusing and special case of handling all network devices from going away that it was hard to see was correct, and would only occur when the phonet module was removed. Now that unregister_netdevice_notifier has been modified to synthesize unregistration events for the network devices that are extant when called this confusing special case in phonet_exit_net is no longer needed. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13net: In unregister_netdevice_notifier unregister the netdevices.Eric W. Biederman1-0/+20
We already synthesize events in register_netdevice_notifier and synthesizing events in unregister_netdevice_notifier allows to us remove the need for special case cleanup code. This change should be safe as it adds no new cases for existing callers of unregiser_netdevice_notifier to handle. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-12net/ipv6/exthdrs.c: Strict PadN option checkingEldad Zack1-0/+16
Added strict checking of PadN, as PadN can be used to increase header size and thus push the protocol header into the 2nd fragment. PadN is used to align the options within the Hop-by-Hop or Destination Options header to 64-bit boundaries. The maximum valid size is thus 7 bytes. RFC 4942 recommends to actively check the "payload" itself and ensure that it contains only zeroes. See also RFC 4942 section 2.1.9.5. Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-12net: Fixed coding style issues relating to braces.Jeffrin Jose1-6/+3
Fixed coding style issues in net/core/utils.c in relation with braces placement. Signed-off-by: Jeffrin Jose <ahiliation@yahoo.co.in> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-12net/ipv6/ipv6_sockglue.c: Removed redundant externEldad Zack1-1/+0
extern int sysctl_mld_max_msf is already defined in linux/ipv6.h. Signed-off-by: Eldad Zack <eldad@fogrefinery.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-12panic: fix stack dump print on direct call to panic()Jason Wessel1-1/+1
Commit 6e6f0a1f0fa6 ("panic: don't print redundant backtraces on oops") causes a regression where no stack trace will be printed at all for the case where kernel code calls panic() directly while not processing an oops, and of course there are 100's of instances of this type of call. The original commit executed the check (!oops_in_progress), but this will always be false because just before the dump_stack() there is a call to bust_spinlocks(1), which does the following: void __attribute__((weak)) bust_spinlocks(int yes) { if (yes) { ++oops_in_progress; The proper way to resolve the problem that original commit tried to solve is to avoid printing a stack dump from panic() when the either of the following conditions is true: 1) TAINT_DIE has been set (this is done by oops_end()) This indicates and oops has already been printed. 2) oops_in_progress > 1 This guards against the rare case where panic() is invoked a second time, or in between oops_begin() and oops_end() Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: <stable@vger.kernel.org> [3.3+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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