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2011-11-30caif: Allow cfpkt_extr_head to process empty messagesjur.brandeland@stericsson.com1-1/+2
Allow NULL pointer in cfpkt_extr_head in order to skip past header data. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-21caif: fix endian conversion in cffrml_transmit()Dan Carpenter1-5/+6
The "tmp" variable here is used to store the result of cpu_to_le16() so it should be an __le16 instead of an int. We want the high bits set and the current code works on little endian systems but not on big endian systems. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-31net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modulesPaul Gortmaker1-0/+1
These files are non modular, but need to export symbols using the macros now living in export.h -- call out the include so that things won't break when we remove the implicit presence of module.h from everywhere. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31net: Fix files explicitly needing to include module.hPaul Gortmaker1-0/+1
With calls to modular infrastructure, these files really needs the full module.h header. Call it out so some of the cleanups of implicit and unrequired includes elsewhere can be cleaned up. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-25caif: Fix BUG() with network namespacesDavid Woodhouse1-2/+3
The caif code will register its own pernet_operations, and then register a netdevice_notifier. Each time the netdevice_notifier is triggered, it'll do some stuff... including a lookup of its own pernet stuff with net_generic(). If the net_generic() call ever returns NULL, the caif code will BUG(). That doesn't seem *so* unreasonable, I suppose — it does seem like it should never happen. However, it *does* happen. When we clone a network namespace, setup_net() runs through all the pernet_operations one at a time. It gets to loopback before it gets to caif. And loopback_net_init() registers a netdevice... while caif hasn't been initialised. So the caif netdevice notifier triggers, and immediately goes BUG(). We could imagine a complex and overengineered solution to this generic class of problems, but this patch takes the simple approach. It just makes caif_device_notify() *not* go looking for its pernet data structures if the device it's being notified about isn't a caif device in the first place. Cc: stable@kernel.org Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-03caif: add error handling for allocationDan Carpenter1-9/+14
The allocation of "phyinfo" wasn't checked, and also the allocation wasn't freed on error paths. Sjur Brændeland pointed out as well that "phy_driver" should be freed on the error path too. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-09-22Merge branch 'master' of github.com:davem330/netDavid S. Miller1-1/+5
Conflicts: MAINTAINERS drivers/net/Kconfig drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c drivers/net/ethernet/broadcom/tg3.c drivers/net/wireless/iwlwifi/iwl-pci.c drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c drivers/net/wireless/rt2x00/rt2800usb.c drivers/net/wireless/wl12xx/main.c
2011-09-16caif: fix a potential NULL dereferenceEric Dumazet1-1/+5
Commit bd30ce4bc0b7 (caif: Use RCU instead of spin-lock in caif_dev.c) added a potential NULL dereference in case alloc_percpu() fails. caif_device_alloc() can also use GFP_KERNEL instead of GFP_ATOMIC. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Sjur Brændeland <sjur.brandeland@stericsson.com> Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-28caif: Remove OOM messages, use kzallocJoe Perches11-75/+27
Remove per site OOM messages because they duplicate the generic mm subsystem OOM message. Use kzalloc instead of kmalloc/memset when next to the OOM message removals. Reduces object size (allyesconfig ~2%) $ size -t drivers/net/caif/built-in.o.old net/caif/built-in.o.old text data bss dec hex filename 32297 700 8224 41221 a105 drivers/net/caif/built-in.o.old 72159 1317 20552 94028 16f4c net/caif/built-in.o.old 104456 2017 28776 135249 21051 (TOTALS) $ size -t drivers/net/caif/built-in.o.new net/caif/built-in.o.new text data bss dec hex filename 31975 700 8184 40859 9f9b drivers/net/caif/built-in.o.new 70748 1317 20152 92217 16839 net/caif/built-in.o.new 102723 2017 28336 133076 207d4 (TOTALS) Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-02rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTERStephen Hemminger1-3/+3
When assigning a NULL value to an RCU protected pointer, no barrier is needed. The rcu_assign_pointer, used to handle that but will soon change to not handle the special case. Convert all rcu_assign_pointer of NULL value. //smpl @@ expression P; @@ - rcu_assign_pointer(P, NULL) + RCU_INIT_POINTER(P, NULL) // </smpl> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-21Remove redundant linux/version.h includes from net/Jesper Juhl2-2/+0
It was suggested by "make versioncheck" that the follwing includes of linux/version.h are redundant: /home/jj/src/linux-2.6/net/caif/caif_dev.c: 14 linux/version.h not needed. /home/jj/src/linux-2.6/net/caif/chnl_net.c: 10 linux/version.h not needed. /home/jj/src/linux-2.6/net/ipv4/gre.c: 19 linux/version.h not needed. /home/jj/src/linux-2.6/net/netfilter/ipset/ip_set_core.c: 20 linux/version.h not needed. /home/jj/src/linux-2.6/net/netfilter/xt_set.c: 16 linux/version.h not needed. and it seems that it is right. Beyond manually inspecting the source files I also did a few build tests with various configs to confirm that including the header in those files is indeed not needed. Here's a patch to remove the pointless includes. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-20Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6David S. Miller1-1/+1
Conflicts: drivers/net/wireless/iwlwifi/iwl-agn-rxon.c drivers/net/wireless/rtlwifi/pci.c net/netfilter/ipvs/ip_vs_core.c
2011-06-16caif: Bugfix - XOFF removed channel from caif-muxsjur.brandeland@stericsson.com1-1/+1
XOFF was mixed up with DOWN indication, causing causing CAIF channel to be removed from mux and all incoming traffic to be lost after receiving flow-off. Fix this by replacing FLOW_OFF with DOWN notification. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-06net: remove interrupt.h inclusion from netdevice.hAlexey Dobriyan1-0/+1
* remove interrupt.g inclusion from netdevice.h -- not needed * fixup fallout, add interrupt.h and hardirq.h back where needed. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-01caif: Fix race when conditionally taking rtnl locksjur.brandeland@stericsson.com1-6/+3
Take the RTNL lock unconditionally when calling dev_close. Taking the lock conditionally may cause race conditions. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-22caif: Plug memory leak for checksum errorsjur.brandeland@stericsson.com1-1/+6
In case of checksum error, the framing layer returns -EILSEQ, but does not free the packet. Plug this hole by freeing the packet if -EILSEQ is returned. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-22caif: Fix freezes when running CAIF loopback devicesjur.brandeland@stericsson.com1-4/+5
Fix spinlock bugs when running out of link-ids in loopback tests and avoid allocating link-id when error is set in link-setup-response. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-22caif: Fixes freeze on Link layer removal.sjur.brandeland@stericsson.com3-44/+62
CAIF Socket layer - caif_socket.c: - Plug mem-leak at reconnect. - Always call disconnect to cleanup CAIF stack. - Disconnect will always report success. CAIF configuration layer - cfcnfg.c - Disconnect must dismantle the caif stack correctly - Protect against faulty removals (check on id zero) CAIF mux layer - cfmuxl.c - When inserting new service layer in the MUX remove any old entries with the same ID. - When removing CAIF Link layer, remove the associated service layers before notifying service layers. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-22caif: Bugfix add check NULL pointer before calling functions.sjur.brandeland@stericsson.com1-9/+26
Add check on layer->dn != NULL before calling functions in layer below. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-15caif: remove unesesarry exportssjur.brandeland@stericsson.com4-24/+13
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-15caif: Bugfix debugfs directory name must be unique.sjur.brandeland@stericsson.com1-12/+22
Race condition caused debugfs_create_dir() to fail due to duplicate name. Use atomic counter to create unique directory name. net_ratelimit() is introduced to limit debug printouts. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-15caif: Handle dev_queue_xmit errors.sjur.brandeland@stericsson.com6-46/+117
Do proper handling of dev_queue_xmit errors in order to avoid double free of skb and leaks in error conditions. In cfctrl pending requests are removed when CAIF Link layer goes down. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-15caif: prepare support for namespacessjur.brandeland@stericsson.com6-180/+162
Use struct net to reference CAIF configuration object instead of static variables. Refactor functions caif_connect_client, caif_disconnect_client and squach files cfcnfg.c and caif_config_utils. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-15caif: Protected in-flight packets using dev or sock refcont.sjur.brandeland@stericsson.com2-4/+43
CAIF Socket Layer and ip-interface registers reference counters in CAIF service layer. The functions sock_hold, sock_put and dev_hold, dev_put are used by CAIF Stack to protect from freeing memory while packets are in-flight. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-15caif: Move refcount from service layer to sock and dev.sjur.brandeland@stericsson.com2-8/+31
Instead of having reference counts in caif service layers, we hook into existing refcount handling in socket layer and netdevice. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-15caif: Add ref-count to framing layersjur.brandeland@stericsson.com2-1/+39
Introduce Per-cpu reference for lower part of CAIF Stack. Before freeing payload is disabled, synchronize_rcu() is called, and then ref-count verified to be zero. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-15caif: Use RCU and lists in cfcnfg.c for managing caif link layerssjur.brandeland@stericsson.com1-160/+213
RCU lists are used for handling the link layers instead of array. When generating CAIF phy-id, ifindex is used as base. Legal range is 1-6. Introduced set_phy_state() for managing CAIF Link layer state. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-15caif: Use RCU instead of spin-lock in caif_dev.csjur.brandeland@stericsson.com1-118/+159
RCU read_lock and refcount is used to protect in-flight packets. Use RCU and counters to manage freeing lower part of the CAIF stack if CAIF-link layer is removed. Old solution based on delaying removal of device is removed. When CAIF link layer goes down the use of CAIF link layer is disabled (by calling caif_set_phy_state()), but removal and freeing of the lower part of the CAIF stack is done when Link layer is unregistered. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-15caif: Use rcu_read_lock in CAIF mux layer.sjur.brandeland@stericsson.com2-44/+83
Replace spin_lock with rcu_read_lock when accessing lists to layers and cache. While packets are in flight rcu_read_lock should not be held, instead ref-counters are used in combination with RCU. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-17caif: Fix set-but-unused variables.David S. Miller1-9/+2
The variable 'caifdef' is set but unused in modemcmd(). Similarly for 'net' in receive(), and 'res' in caif_device_notify() and caif_exit_net(). Just kill them off. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-11caif: Add BUG_ON if dev_info is missing in packetSjur Brændeland1-1/+2
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-11caif: Don't resend if dev_queue_xmit fails.Sjur Brændeland9-88/+14
If CAIF Link Layer returns an error, we no longer try to re-build the CAIF packet and resend it. Instead, we simply return any transmission errors to the socket client. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-11caif: code cleanupStephen Hemminger7-304/+23
Cleanup of new CAIF code. * make local functions static * remove code that is never used * expand get_caif_conf() since wrapper is no longer needed * make args to comparison functions const * rename connect_req_to_link_param to keep exported names consistent Compile tested only. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-11caif: performance bugfix - allow radio stack to prioritize packets.Sjur Brændeland1-1/+5
In the CAIF Payload message the Packet Type indication must be set to UNCLASSIFIED in order to allow packet prioritization in the modem's network stack. Otherwise TCP-Ack is not prioritized in the modems transmit queue. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-11caif: Bugfix use for_each_safe when removing list nodes.Sjur Brændeland1-2/+2
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-31Fix common misspellingsLucas De Marchi1-1/+1
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-02-08Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6David S. Miller1-2/+2
Conflicts: drivers/net/e1000e/netdev.c
2011-02-08net/caif: Fix dangling list pointer in freed object on error.David S. Miller1-2/+2
rtnl_link_ops->setup(), and the "setup" callback passed to alloc_netdev*(), cannot make state changes which need to be undone on failure. There is no cleanup mechanism available at this point. So we have to add the caif private instance to the global list once we are sure that register_netdev() has succedded in ->newlink(). Otherwise, if register_netdev() fails, the caller will invoke free_netdev() and we will have a reference to freed up memory on the chnl_net_list. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-19net: cleanup unused macros in net directoryShan Wei5-6/+2
Clean up some unused macros in net/*. 1. be left for code change. e.g. PGV_FROM_VMALLOC, PGV_FROM_VMALLOC, KMEM_SAFETYZONE. 2. never be used since introduced to kernel. e.g. P9_RDMA_MAX_SGE, UTIL_CTRL_PKT_SIZE. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Acked-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-15caif: checking the wrong variableDan Carpenter1-4/+5
In the original code we check if (servl == NULL) twice. The first time should print the message that cfmuxl_remove_uplayer() failed and set "ret" correctly, but instead it just returns success. The second check should be checking the value of "ret" instead of "servl". Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-10CAIF: Fix IPv6 support in receive path for GPRS/3GKumar Sanghvi1-1/+17
Checks version field of IP in the receive path for GPRS/3G data and appropriately sets the value of skb->protocol. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-10caif: don't set connection request param size before copying dataDan Rosenberg1-1/+1
The size field should not be set until after the data is successfully copied in. Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-22Net: caif: Makefile: Remove deprecated itemsTracey Dent1-5/+3
Changed Makefile to use <modules>-y instead of <modules>-objs because -objs is deprecated and not mentioned in Documentation/kbuild/makefiles.txt. Also, use the ccflags-$ flag instead of EXTRA_CFLAGS because EXTRA_CFLAGS is deprecated and should now be switched. Last but not least, took out if-conditionals. Signed-off-by: Tracey Dent <tdent48227@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-03caif: Remove noisy printout when disconnecting caif socketsjur.brandeland@stericsson.com1-2/+1
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-03caif: Bugfix for socket priority, bindtodev and dbg channel.André Carvalho de Matos6-44/+49
Changes: o Bugfix: SO_PRIORITY for SOL_SOCKET could not be handled in caif's setsockopt, using the struct sock attribute priority instead. o Bugfix: SO_BINDTODEVICE for SOL_SOCKET could not be handled in caif's setsockopt, using the struct sock attribute ifindex instead. o Wrong assert statement for RFM layer segmentation. o CAIF Debug channels was not working over SPI, caif_payload_info containing padding info must be initialized. o Check on pointer before dereferencing when unregister dev in caif_dev.c Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-06Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6David S. Miller1-4/+13
Conflicts: drivers/net/pcmcia/pcnet_cs.c net/caif/caif_socket.c
2010-10-05caif: fix two caif_connect() bugsEric Dumazet1-6/+15
caif_connect() might dereference a netdevice after dev_put() it. It also doesnt check dev_get_by_index() return value and could dereference a NULL pointer. Fix it, using RCU to avoid taking a reference. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05caif: remove duplicated includeNicolas Kaiser1-1/+0
Remove duplicated include. Signed-off-by: Nicolas Kaiser <nikai@nikai.net> Acked-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-21caif: Use default send and receive buffer size in caif_socket.Sjur Braendeland1-7/+0
CAIF sockets should use socket's default send and receive buffers sizes. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-21caif: Fix function NULL pointer check.Sjur Braendeland1-1/+1
Check that receive function pointer is not null before calling it. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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