22 Nov, 2011
1 commit
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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
Acked-by: Sjur Brændeland
Signed-off-by: David S. Miller
01 Nov, 2011
2 commits
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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
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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
26 Oct, 2011
1 commit
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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
Acked-by: Sjur Brændeland
Signed-off-by: David S. Miller
04 Oct, 2011
1 commit
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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
Acked-by: Sjur Brændeland
Signed-off-by: David S. Miller
22 Sep, 2011
1 commit
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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
17 Sep, 2011
1 commit
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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
CC: Sjur Brændeland
Acked-by: Sjur Brændeland
Signed-off-by: David S. Miller
29 Aug, 2011
1 commit
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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
Signed-off-by: David S. Miller
02 Aug, 2011
1 commit
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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)//
Signed-off-by: Stephen Hemminger
Acked-by: Paul E. McKenney
Signed-off-by: David S. Miller
22 Jun, 2011
1 commit
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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
Acked-by: Jozsef Kadlecsik
Signed-off-by: David S. Miller
21 Jun, 2011
1 commit
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Conflicts:
drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
drivers/net/wireless/rtlwifi/pci.c
net/netfilter/ipvs/ip_vs_core.c
17 Jun, 2011
1 commit
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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
Signed-off-by: David S. Miller
07 Jun, 2011
1 commit
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* 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
Signed-off-by: David S. Miller
02 Jun, 2011
1 commit
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Take the RTNL lock unconditionally when calling dev_close.
Taking the lock conditionally may cause race conditions.Signed-off-by: Sjur Brændeland
Signed-off-by: David S. Miller
23 May, 2011
4 commits
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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
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
Add check on layer->dn != NULL before calling functions in
layer below.Signed-off-by: Sjur Brændeland
Signed-off-by: David S. Miller
16 May, 2011
10 commits
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Signed-off-by: Sjur Brændeland
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller
18 Apr, 2011
1 commit
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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
12 Apr, 2011
5 commits
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Signed-off-by: Sjur Brændeland
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
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
consistentCompile tested only.
Signed-off-by: Stephen Hemminger
Acked-by: Sjur Brændeland
Signed-off-by: David S. Miller -
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
Signed-off-by: David S. Miller -
Signed-off-by: Sjur Brændeland
Signed-off-by: David S. Miller
31 Mar, 2011
1 commit
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
09 Feb, 2011
2 commits
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Conflicts:
drivers/net/e1000e/netdev.c -
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
20 Jan, 2011
1 commit
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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
Acked-by: Sjur Braendeland
Signed-off-by: David S. Miller
16 Jan, 2011
1 commit
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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
Acked-by: Sjur Braendeland
Signed-off-by: David S. Miller
11 Jan, 2011
1 commit
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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
Signed-off-by: David S. Miller
