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The module prints a warning when the MTU on the hard interface is too
small to transfer payload traffic without fragmentation. The required
MTU is calculated based on the encapsulation header size. If network
coding is compild into the module its header size is taken into
account as well.
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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the icmp and the icmp_rr packets share the same initial
fields since they use the same code to be processed and
forwarded.
Extract the common fields and put them into a separate
struct so that future ICMP packets can be easily added
without bloating the packet definition.
However, keep the seqno field outside of the newly created
common header because future ICMP types may require a
bigger sequence number space.
This change breaks compatibility due to fields reordering
in the ICMP headers.
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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The PSM 0x0021 is dedicated to the 3D profile and has permission to
use security mode 4 level 0 for L2CAP connectionless unicast data
transfers.
When establishing a L2CAP connectionless channel on PSM 0x0021, it
will no longer force Secure Simple Pairing.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The exception for certain PSM channels when it comes to security
mode 4 level 0 should only be checked when actually a connection
oriented channel is established.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The put_unaligned() for setting the PSM is missing the (__le16 *)
cast. Without this, the PSM information transmitted over the air
are bogus.
In addition, print the used PSM value in the debug message so this
becomes easier to debug in the future.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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When comparing a network ordered value with a constant, it
is better to convert the constant at compile time by means
of htons() instead of converting the value at runtime using
ntohs().
This refactoring may slightly improve the code performance.
Moreover substitute __constant_htons() with htons() since
the latter increase readability and it is smart enough to be
as efficient as the former
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
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Non-broadcast packets larger than MTU are fragmented and sent with
an encapsulating header. Up to 16 fragments are supported, which are
sent in reverse order on the wire to allow minimal memory copying when
creating fragments.
Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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Fragments arriving at their destination are buffered for later merge.
Merged packets are passed to the main receive function as had they never
been fragmented.
Fragments are forwarded without merging if the MTU of the outgoing
interface is smaller than the size of the merged packet.
Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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Remove the existing fragmentation code before adding the new version
and delete unicast.{h,c}.
batadv_unicast_send_skb() is moved to send.c and renamed to
batadv_send_skb_unicast().
fragmentation entry in sysfs (bat_priv->fragmentation) is kept for use in
the new fragmentation code.
BATADV_UNICAST_FRAG packet type is renamed to BATADV_FRAG for use in the
new fragmentation code.
Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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In case of a VLAN tagged frame the ethhdr pointer is
moved forward by 4 bytes so that the offset of h_proto
in struct ethhdr matches the real
h_vlan_encapsulated_proto address in the skb. While this
trickery is correct it makes the code harder to understand
and may lead to bugs in case of re-use of ethhdr for other
purposes.
This patch introduces a proto variable to make things
cleaner and easier to understand.
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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batadv_tt_global_entry_free_ref uses call_rcu to schedule a
function which will only free the global entry itself.
For this reason call_rcu is useless and kfree_rcu can be
used to simplify the code.
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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batadv_tt_global_add_orig is neither used nor implemented
anymore, therefore it is possible to remove its declaration
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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batadv_tt_global_add is not used anymore outside of the TT
code thanks to the TVLV implementation. It can therefore be
declared as static
Last user has been removed by 3de4e64df0f1326db7cc0ef25f5af8522850252d
("batman-adv: tvlv - convert roaming adv packet to use tvlv unicast packets")
Moreover make it return bool since its result can be either 0 or 1.
Reported-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
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Adding host information for record route is only required for ICMP
requests and replys, and should not be added to just any (future?)
packet type.
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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The 1st generation of BlueFRITZ! devices from AVM Berlin pretend
to be HCI version 1.2 controllers, but they are not. They are simple
Bluetooth 1.1 devices.
Since this company never created any newer controllers, it is safe
to use the manufacturer ID instead of an USB quirk.
< HCI Command: Read Page Scan Activity (0x03|0x001b) plen 0
> HCI Event: Command Complete (0x0e) plen 8
Read Page Scan Activity (0x03|0x001b) ncmd 1
Status: Success (0x00)
Interval: 1280.000 msec (0x0800)
Window: 21.250 msec (0x0022)
< HCI Command: Read Page Scan Type (0x03|0x0046) plen 0
> HCI Event: Command Status (0x0f) plen 4
Read Page Scan Type (0x03|0x0046) ncmd 1
Status: Unknown HCI Command (0x01)
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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When adding support for MGMT_OP_SET_SCAN_PARAMS command the addition
to the supported commands list has been forgotten. This is needed
for userspace to detect if the command is supported or not.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The ip6_tnl.hlen (gre and ipv6 headers length) is independent from the
outgoing interface, so it would be better to initialize it even when no
route is found, otherwise its value will be zero.
While I'm not sure if this could happen in real life, but doing that
will avoid to call the skb_push function with a zero in ip6gre_header
function.
Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Oussama Ghorbel <ou.ghorbel@gmail.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1) We need to take a timestamp only for skb that should be cloned.
Other skbs are not in write queue and no rtt estimation is done on them.
2) the unlikely() hint is wrong for receivers (they send pure ACK)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: MF Nowlan <fitz@cs.yale.edu>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-By: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Netem can leak memory because packets get stored in red-black
tree and it is not cleared on reset.
Reported by: Сергеев Сергей <adron@yapic.net>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When packet is dropped from rb-tree netem the backlog statistic should
also be updated.
Reported-by: Сергеев Сергей <adron@yapic.net>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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François Cachereul made a very nice bug report and suspected
the bh_lock_sock() / bh_unlok_sock() pair used in l2tp_xmit_skb() from
process context was not good.
This problem was added by commit 6af88da14ee284aaad6e4326da09a89191ab6165
("l2tp: Fix locking in l2tp_core.c").
l2tp_eth_dev_xmit() runs from BH context, so we must disable BH
from other l2tp_xmit_skb() users.
[ 452.060011] BUG: soft lockup - CPU#1 stuck for 23s! [accel-pppd:6662]
[ 452.061757] Modules linked in: l2tp_ppp l2tp_netlink l2tp_core pppoe pppox
ppp_generic slhc ipv6 ext3 mbcache jbd virtio_balloon xfs exportfs dm_mod
virtio_blk ata_generic virtio_net floppy ata_piix libata virtio_pci virtio_ring virtio [last unloaded: scsi_wait_scan]
[ 452.064012] CPU 1
[ 452.080015] BUG: soft lockup - CPU#2 stuck for 23s! [accel-pppd:6643]
[ 452.080015] CPU 2
[ 452.080015]
[ 452.080015] Pid: 6643, comm: accel-pppd Not tainted 3.2.46.mini #1 Bochs Bochs
[ 452.080015] RIP: 0010:[<ffffffff81059f6c>] [<ffffffff81059f6c>] do_raw_spin_lock+0x17/0x1f
[ 452.080015] RSP: 0018:ffff88007125fc18 EFLAGS: 00000293
[ 452.080015] RAX: 000000000000aba9 RBX: ffffffff811d0703 RCX: 0000000000000000
[ 452.080015] RDX: 00000000000000ab RSI: ffff8800711f6896 RDI: ffff8800745c8110
[ 452.080015] RBP: ffff88007125fc18 R08: 0000000000000020 R09: 0000000000000000
[ 452.080015] R10: 0000000000000000 R11: 0000000000000280 R12: 0000000000000286
[ 452.080015] R13: 0000000000000020 R14: 0000000000000240 R15: 0000000000000000
[ 452.080015] FS: 00007fdc0cc24700(0000) GS:ffff8800b6f00000(0000) knlGS:0000000000000000
[ 452.080015] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 452.080015] CR2: 00007fdb054899b8 CR3: 0000000074404000 CR4: 00000000000006a0
[ 452.080015] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 452.080015] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 452.080015] Process accel-pppd (pid: 6643, threadinfo ffff88007125e000, task ffff8800b27e6dd0)
[ 452.080015] Stack:
[ 452.080015] ffff88007125fc28 ffffffff81256559 ffff88007125fc98 ffffffffa01b2bd1
[ 452.080015] ffff88007125fc58 000000000000000c 00000000029490d0 0000009c71dbe25e
[ 452.080015] 000000000000005c 000000080000000e 0000000000000000 ffff880071170600
[ 452.080015] Call Trace:
[ 452.080015] [<ffffffff81256559>] _raw_spin_lock+0xe/0x10
[ 452.080015] [<ffffffffa01b2bd1>] l2tp_xmit_skb+0x189/0x4ac [l2tp_core]
[ 452.080015] [<ffffffffa01c2d36>] pppol2tp_sendmsg+0x15e/0x19c [l2tp_ppp]
[ 452.080015] [<ffffffff811c7872>] __sock_sendmsg_nosec+0x22/0x24
[ 452.080015] [<ffffffff811c83bd>] sock_sendmsg+0xa1/0xb6
[ 452.080015] [<ffffffff81254e88>] ? __schedule+0x5c1/0x616
[ 452.080015] [<ffffffff8103c7c6>] ? __dequeue_signal+0xb7/0x10c
[ 452.080015] [<ffffffff810bbd21>] ? fget_light+0x75/0x89
[ 452.080015] [<ffffffff811c8444>] ? sockfd_lookup_light+0x20/0x56
[ 452.080015] [<ffffffff811c9b34>] sys_sendto+0x10c/0x13b
[ 452.080015] [<ffffffff8125cac2>] system_call_fastpath+0x16/0x1b
[ 452.080015] Code: 81 48 89 e5 72 0c 31 c0 48 81 ff 45 66 25 81 0f 92 c0 5d c3 55 b8 00 01 00 00 48 89 e5 f0 66 0f c1 07 0f b6 d4 38 d0 74 06 f3 90 <8a> 07 eb f6 5d c3 90 90 55 48 89 e5 9c 58 0f 1f 44 00 00 5d c3
[ 452.080015] Call Trace:
[ 452.080015] [<ffffffff81256559>] _raw_spin_lock+0xe/0x10
[ 452.080015] [<ffffffffa01b2bd1>] l2tp_xmit_skb+0x189/0x4ac [l2tp_core]
[ 452.080015] [<ffffffffa01c2d36>] pppol2tp_sendmsg+0x15e/0x19c [l2tp_ppp]
[ 452.080015] [<ffffffff811c7872>] __sock_sendmsg_nosec+0x22/0x24
[ 452.080015] [<ffffffff811c83bd>] sock_sendmsg+0xa1/0xb6
[ 452.080015] [<ffffffff81254e88>] ? __schedule+0x5c1/0x616
[ 452.080015] [<ffffffff8103c7c6>] ? __dequeue_signal+0xb7/0x10c
[ 452.080015] [<ffffffff810bbd21>] ? fget_light+0x75/0x89
[ 452.080015] [<ffffffff811c8444>] ? sockfd_lookup_light+0x20/0x56
[ 452.080015] [<ffffffff811c9b34>] sys_sendto+0x10c/0x13b
[ 452.080015] [<ffffffff8125cac2>] system_call_fastpath+0x16/0x1b
[ 452.064012]
[ 452.064012] Pid: 6662, comm: accel-pppd Not tainted 3.2.46.mini #1 Bochs Bochs
[ 452.064012] RIP: 0010:[<ffffffff81059f6e>] [<ffffffff81059f6e>] do_raw_spin_lock+0x19/0x1f
[ 452.064012] RSP: 0018:ffff8800b6e83ba0 EFLAGS: 00000297
[ 452.064012] RAX: 000000000000aaa9 RBX: ffff8800b6e83b40 RCX: 0000000000000002
[ 452.064012] RDX: 00000000000000aa RSI: 000000000000000a RDI: ffff8800745c8110
[ 452.064012] RBP: ffff8800b6e83ba0 R08: 000000000000c802 R09: 000000000000001c
[ 452.064012] R10: ffff880071096c4e R11: 0000000000000006 R12: ffff8800b6e83b18
[ 452.064012] R13: ffffffff8125d51e R14: ffff8800b6e83ba0 R15: ffff880072a589c0
[ 452.064012] FS: 00007fdc0b81e700(0000) GS:ffff8800b6e80000(0000) knlGS:0000000000000000
[ 452.064012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 452.064012] CR2: 0000000000625208 CR3: 0000000074404000 CR4: 00000000000006a0
[ 452.064012] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 452.064012] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 452.064012] Process accel-pppd (pid: 6662, threadinfo ffff88007129a000, task ffff8800744f7410)
[ 452.064012] Stack:
[ 452.064012] ffff8800b6e83bb0 ffffffff81256559 ffff8800b6e83bc0 ffffffff8121c64a
[ 452.064012] ffff8800b6e83bf0 ffffffff8121ec7a ffff880072a589c0 ffff880071096c62
[ 452.064012] 0000000000000011 ffffffff81430024 ffff8800b6e83c80 ffffffff8121f276
[ 452.064012] Call Trace:
[ 452.064012] <IRQ>
[ 452.064012] [<ffffffff81256559>] _raw_spin_lock+0xe/0x10
[ 452.064012] [<ffffffff8121c64a>] spin_lock+0x9/0xb
[ 452.064012] [<ffffffff8121ec7a>] udp_queue_rcv_skb+0x186/0x269
[ 452.064012] [<ffffffff8121f276>] __udp4_lib_rcv+0x297/0x4ae
[ 452.064012] [<ffffffff8121c178>] ? raw_rcv+0xe9/0xf0
[ 452.064012] [<ffffffff8121f4a7>] udp_rcv+0x1a/0x1c
[ 452.064012] [<ffffffff811fe385>] ip_local_deliver_finish+0x12b/0x1a5
[ 452.064012] [<ffffffff811fe54e>] ip_local_deliver+0x53/0x84
[ 452.064012] [<ffffffff811fe1d0>] ip_rcv_finish+0x2bc/0x2f3
[ 452.064012] [<ffffffff811fe78f>] ip_rcv+0x210/0x269
[ 452.064012] [<ffffffff8101911e>] ? kvm_clock_get_cycles+0x9/0xb
[ 452.064012] [<ffffffff811d88cd>] __netif_receive_skb+0x3a5/0x3f7
[ 452.064012] [<ffffffff811d8eba>] netif_receive_skb+0x57/0x5e
[ 452.064012] [<ffffffff811cf30f>] ? __netdev_alloc_skb+0x1f/0x3b
[ 452.064012] [<ffffffffa0049126>] virtnet_poll+0x4ba/0x5a4 [virtio_net]
[ 452.064012] [<ffffffff811d9417>] net_rx_action+0x73/0x184
[ 452.064012] [<ffffffffa01b2cc2>] ? l2tp_xmit_skb+0x27a/0x4ac [l2tp_core]
[ 452.064012] [<ffffffff810343b9>] __do_softirq+0xc3/0x1a8
[ 452.064012] [<ffffffff81013b56>] ? ack_APIC_irq+0x10/0x12
[ 452.064012] [<ffffffff81256559>] ? _raw_spin_lock+0xe/0x10
[ 452.064012] [<ffffffff8125e0ac>] call_softirq+0x1c/0x26
[ 452.064012] [<ffffffff81003587>] do_softirq+0x45/0x82
[ 452.064012] [<ffffffff81034667>] irq_exit+0x42/0x9c
[ 452.064012] [<ffffffff8125e146>] do_IRQ+0x8e/0xa5
[ 452.064012] [<ffffffff8125676e>] common_interrupt+0x6e/0x6e
[ 452.064012] <EOI>
[ 452.064012] [<ffffffff810b82a1>] ? kfree+0x8a/0xa3
[ 452.064012] [<ffffffffa01b2cc2>] ? l2tp_xmit_skb+0x27a/0x4ac [l2tp_core]
[ 452.064012] [<ffffffffa01b2c25>] ? l2tp_xmit_skb+0x1dd/0x4ac [l2tp_core]
[ 452.064012] [<ffffffffa01c2d36>] pppol2tp_sendmsg+0x15e/0x19c [l2tp_ppp]
[ 452.064012] [<ffffffff811c7872>] __sock_sendmsg_nosec+0x22/0x24
[ 452.064012] [<ffffffff811c83bd>] sock_sendmsg+0xa1/0xb6
[ 452.064012] [<ffffffff81254e88>] ? __schedule+0x5c1/0x616
[ 452.064012] [<ffffffff8103c7c6>] ? __dequeue_signal+0xb7/0x10c
[ 452.064012] [<ffffffff810bbd21>] ? fget_light+0x75/0x89
[ 452.064012] [<ffffffff811c8444>] ? sockfd_lookup_light+0x20/0x56
[ 452.064012] [<ffffffff811c9b34>] sys_sendto+0x10c/0x13b
[ 452.064012] [<ffffffff8125cac2>] system_call_fastpath+0x16/0x1b
[ 452.064012] Code: 89 e5 72 0c 31 c0 48 81 ff 45 66 25 81 0f 92 c0 5d c3 55 b8 00 01 00 00 48 89 e5 f0 66 0f c1 07 0f b6 d4 38 d0 74 06 f3 90 8a 07 <eb> f6 5d c3 90 90 55 48 89 e5 9c 58 0f 1f 44 00 00 5d c3 55 48
[ 452.064012] Call Trace:
[ 452.064012] <IRQ> [<ffffffff81256559>] _raw_spin_lock+0xe/0x10
[ 452.064012] [<ffffffff8121c64a>] spin_lock+0x9/0xb
[ 452.064012] [<ffffffff8121ec7a>] udp_queue_rcv_skb+0x186/0x269
[ 452.064012] [<ffffffff8121f276>] __udp4_lib_rcv+0x297/0x4ae
[ 452.064012] [<ffffffff8121c178>] ? raw_rcv+0xe9/0xf0
[ 452.064012] [<ffffffff8121f4a7>] udp_rcv+0x1a/0x1c
[ 452.064012] [<ffffffff811fe385>] ip_local_deliver_finish+0x12b/0x1a5
[ 452.064012] [<ffffffff811fe54e>] ip_local_deliver+0x53/0x84
[ 452.064012] [<ffffffff811fe1d0>] ip_rcv_finish+0x2bc/0x2f3
[ 452.064012] [<ffffffff811fe78f>] ip_rcv+0x210/0x269
[ 452.064012] [<ffffffff8101911e>] ? kvm_clock_get_cycles+0x9/0xb
[ 452.064012] [<ffffffff811d88cd>] __netif_receive_skb+0x3a5/0x3f7
[ 452.064012] [<ffffffff811d8eba>] netif_receive_skb+0x57/0x5e
[ 452.064012] [<ffffffff811cf30f>] ? __netdev_alloc_skb+0x1f/0x3b
[ 452.064012] [<ffffffffa0049126>] virtnet_poll+0x4ba/0x5a4 [virtio_net]
[ 452.064012] [<ffffffff811d9417>] net_rx_action+0x73/0x184
[ 452.064012] [<ffffffffa01b2cc2>] ? l2tp_xmit_skb+0x27a/0x4ac [l2tp_core]
[ 452.064012] [<ffffffff810343b9>] __do_softirq+0xc3/0x1a8
[ 452.064012] [<ffffffff81013b56>] ? ack_APIC_irq+0x10/0x12
[ 452.064012] [<ffffffff81256559>] ? _raw_spin_lock+0xe/0x10
[ 452.064012] [<ffffffff8125e0ac>] call_softirq+0x1c/0x26
[ 452.064012] [<ffffffff81003587>] do_softirq+0x45/0x82
[ 452.064012] [<ffffffff81034667>] irq_exit+0x42/0x9c
[ 452.064012] [<ffffffff8125e146>] do_IRQ+0x8e/0xa5
[ 452.064012] [<ffffffff8125676e>] common_interrupt+0x6e/0x6e
[ 452.064012] <EOI> [<ffffffff810b82a1>] ? kfree+0x8a/0xa3
[ 452.064012] [<ffffffffa01b2cc2>] ? l2tp_xmit_skb+0x27a/0x4ac [l2tp_core]
[ 452.064012] [<ffffffffa01b2c25>] ? l2tp_xmit_skb+0x1dd/0x4ac [l2tp_core]
[ 452.064012] [<ffffffffa01c2d36>] pppol2tp_sendmsg+0x15e/0x19c [l2tp_ppp]
[ 452.064012] [<ffffffff811c7872>] __sock_sendmsg_nosec+0x22/0x24
[ 452.064012] [<ffffffff811c83bd>] sock_sendmsg+0xa1/0xb6
[ 452.064012] [<ffffffff81254e88>] ? __schedule+0x5c1/0x616
[ 452.064012] [<ffffffff8103c7c6>] ? __dequeue_signal+0xb7/0x10c
[ 452.064012] [<ffffffff810bbd21>] ? fget_light+0x75/0x89
[ 452.064012] [<ffffffff811c8444>] ? sockfd_lookup_light+0x20/0x56
[ 452.064012] [<ffffffff811c9b34>] sys_sendto+0x10c/0x13b
[ 452.064012] [<ffffffff8125cac2>] system_call_fastpath+0x16/0x1b
Reported-by: François Cachereul <f.cachereul@alphalink.fr>
Tested-by: François Cachereul <f.cachereul@alphalink.fr>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Included changes:
- update emails for A. Quartulli and M. Lindner in MAINTAINERS
- switch to the next on-the-wire protocol version
- introduce the T(ype) V(ersion) L(ength) V(alue) framework
- adjust the existing components to make them use the new TVLV code
- make the TT component use CRC32 instead of CRC16
- totally remove the VIS functionality (has been moved to userspace)
- reorder packet types and flags
- add static checks on packet format
- remove __packed from batadv_ogm_packet
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This patch fixes and improves the use of vti interfaces (while
lightly changing the way of configuring them).
Currently:
- it is necessary to identify and mark inbound IPsec
packets destined to each vti interface, via netfilter rules in
the mangle table at prerouting hook.
- the vti module cannot retrieve the right tunnel in input since
commit b9959fd3: vti tunnels all have an i_key, but the tunnel lookup
is done with flag TUNNEL_NO_KEY, so there no chance to retrieve them.
- the i_key is used by the outbound processing as a mark to lookup
for the right SP and SA bundle.
This patch uses the o_key to store the vti mark (instead of i_key) and
enables:
- to avoid the need for previously marking the inbound skbuffs via a
netfilter rule.
- to properly retrieve the right tunnel in input, only based on the IPsec
packet outer addresses.
- to properly perform an inbound policy check (using the tunnel o_key
as a mark).
- to properly perform an outbound SPD and SAD lookup (using the tunnel
o_key as a mark).
- to keep the current mark of the skbuff. The skbuff mark is neither
used nor changed by the vti interface. Only the vti interface o_key
is used.
SAs have a wildcard mark.
SPs have a mark equal to the vti interface o_key.
The vti interface must be created as follows (i_key = 0, o_key = mark):
ip link add vti1 mode vti local 1.1.1.1 remote 2.2.2.2 okey 1
The SPs attached to vti1 must be created as follows (mark = vti1 o_key):
ip xfrm policy add dir out mark 1 tmpl src 1.1.1.1 dst 2.2.2.2 \
proto esp mode tunnel
ip xfrm policy add dir in mark 1 tmpl src 2.2.2.2 dst 1.1.1.1 \
proto esp mode tunnel
The SAs are created with the default wildcard mark. There is no
distinction between global vs. vti SAs. Just their addresses will
possibly link them to a vti interface:
ip xfrm state add src 1.1.1.1 dst 2.2.2.2 proto esp spi 1000 mode tunnel \
enc "cbc(aes)" "azertyuiopqsdfgh"
ip xfrm state add src 2.2.2.2 dst 1.1.1.1 proto esp spi 2000 mode tunnel \
enc "cbc(aes)" "sqbdhgqsdjqjsdfh"
To avoid matching "global" (not vti) SPs in vti interfaces, global SPs
should no use the default wildcard mark, but explicitly match mark 0.
To avoid a double SPD lookup in input and output (in global and vti SPDs),
the NOPOLICY and NOXFRM options should be set on the vti interfaces:
echo 1 > /proc/sys/net/ipv4/conf/vti1/disable_policy
echo 1 > /proc/sys/net/ipv4/conf/vti1/disable_xfrm
The outgoing traffic is steered to vti1 by a route via the vti interface:
ip route add 192.168.0.0/16 dev vti1
The incoming IPsec traffic is steered to vti1 because its outer addresses
match the vti1 tunnel configuration.
Signed-off-by: Christophe Gouault <christophe.gouault@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is not allowed to enable high speed support when Secure Simple
Pairing is not available or disabled.
However the support for high speed gets advertised on a controller
that does not even support Secure Simple Pairing. Since there is
no way to enable high speed support on such a controller, do not
even advertise its support.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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Really early versions of the Bluetooth specification were unclear
with the behavior of HCI Reset for USB devices. They assumed that
also an USB reset needs to be issued. Later Bluetooth specifications
cleared this out and it is safe to call HCI Reset without affecting
the transport.
For old devices that misbehave, the HCI_QUIRK_RESET_ON_CLOSE quirk
was introduced to postpone the HCI Reset until the device was no
longer in use.
One of these devices is the Digianswer BPA-105 Bluetooth Protocol
Analyzer. The only problem now is that with the quirk set, the
HCI Reset is also executed at the end of the setup phase. So the
controller gets configured and then it disconnects from the USB
bus, connects again, gets configured and of course disconnects
again. This game goes on forever.
For devices that need HCI_QUIRK_RESET_ON_CLOSE it is important
that the HCI Reset is not executed after the setup phase. In
specific when HCI_AUTO_OFF is set, do not call HCI Reset when
closing the device.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The scan interval and window parameters are used for LE passive
background scanning and connection establishment. This allows
userspace to change the values.
These two values should be kept in sync with whatever is used for
the scan parameters service on remote devices. And it puts the
controlling daemon (for example bluetoothd) in charge of setting
the values.
Main use case would be to switch between two sets of values. One
for foreground applications and one for background applications.
At this moment, the values are only used for manual connection
establishment, but soon that should be extended to background
scanning and automatic connection establishment.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The scan interval and window for LE passive scanning and connection
establishment should be configurable on a per controller basis. So
introduce a setting that later on will allow modifying it.
This setting does not affect LE active scanning during device
discovery phase. As long as that phase uses interleaved discovery,
it will continuously scan.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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Use the generic CCM aead chaining mode driver rather than a local
implementation that sits right on top of the core AES cipher.
This allows the use of accelerated implementations of either
CCM as a whole or the CTR mode which it encapsulates.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This makes it easier to read.
Cc: smihir@qti.qualcomm.com
Cc: tushnimb@qca.qualcomm.com
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If we have a wiphy with an ISO3166-alpha2 regulatory domain
programmed with the strict flag set we wait until the wiphy
gets its wiphy->regd programmed before allowing regulatory
domains hints other than country IE hints from processing
on the wiphy. The existing check however discards the
possibility of custom regulatory domains having also used
the strict flag and these will not have the wiphy->regd
set. Custom strict regulatory domains never set the wiphy->regd
though as such currently all regulatory hints other than
country IE hints are being ignored on these wiphys.
All custom strict regulatory domains set the wiphy with the
WIPHY_FLAG_CUSTOM_REGULATORY and use wiphy_apply_custom_regulatory().
Enhance the check for the strict ISO3166-alpha2 regulatory domain
case by exempting the WIPHY_FLAG_CUSTOM_REGULATORY case. This
will enable other regulatory hints to be processed now for
these strict custom regulatory domains.
Cc: smihir@qti.qualcomm.com
Cc: tushnimb@qca.qualcomm.com
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Instead of masking hdev inside the skb->dev parameter, hand it
directly to the driver as a parameter to hdev->send. This makes
the driver interface more clear and simpler.
This patch fixes all drivers to accept and handle the new parameter
of hdev->send callback. Special care has been taken for bpa10x
and btusb drivers that require having skb->dev set to hdev for
the URB transmit complete handlers.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The information of the peer's supported channels and supported operating
classes are required for the driver to perform TDLS off channel
operations. This commit enhances the function nl80211_(new)set_station
to pass this information of the peer to the driver.
Signed-off-by: Sunil Dutt <c_duttus@qti.qualcomm.com>
[return errors for malformed tuples]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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To avoid casting skb->dev into hdev, just let the drivers provide
the hdev directly when calling hci_recv_frame() function.
This patch also fixes up all drivers to provide the hdev.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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commit 9f00b2e7cf241fa389733d41b615efdaa2cb0f5b
bridge: only expire the mdb entry when query is received
changed the mdb expiration timer to be armed only when QUERY is
received. Howerver, this causes issues in an environment where
the multicast server socket comes and goes very fast while a client
is trying to send traffic to it.
The root cause is a race where a sequence of LEAVE followed by REPORT
messages can race against QUERY messages generated in response to LEAVE.
The QUERY ends up starting the expiration timer, and that timer can
potentially expire after the new REPORT message has been received signaling
the new join operation. This leads to a significant drop in multicast
traffic and possible complete stall.
The solution is to have REPORT messages update the expiration timer
on entries that already exist.
CC: Cong Wang <xiyou.wangcong@gmail.com>
CC: Herbert Xu <herbert@gondor.apana.org.au>
CC: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The return value of hci_send_frame() is never checked. So just make
this function void and print an error when the hdev->send driver
callback returns a negative value.
Having the error printed is actually an improvement over the
current situation where any driver error just gets ignored.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The hdev parameter of hci_send_frame must be always valid. If the hdev
is not valid, it would not even make it to this stage. The callers
will have already accessed hdev at that point many times.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The assignement of skb->dev is done all over the place. So it makes it
hard to eventually get rid of it. Move it all in one central place so
it gets assigned right before calling hdev->send driver callback.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The smp.h header file is only used internally by the bluetooth.ko
module and is not a public API. So make it local to the core
Bluetooth module.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The a2mp.h header file is only used internally by the bluetooth.ko
module and is not a public API. So make it local to the core
Bluetooth module.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The amp.h header file is only used internally by the bluetooth.ko
module and is not a public API. So make it local to the core
Bluetooth module.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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Since there is no use of hdev->ioctl by any Bluetooth driver since
ever, so just lets remove it.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The legacy ioctls for device specific commands including inquiry are
not support by AMP controllers. So just reject them right away instead
of trying to send the HCI command and wait for failure from the
actual hardware.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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When checking for the current number of LE connections, use
hci_conn_num() function instead of a full blown lookup within
the connection hash or direct access of the counters.
In the case of re-enabling advertising, it is more useful to
check for any connection attempt or existing connection.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The function declaration goes over 80 characters, so break it down.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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In commit 634fb979e8f ("inet: includes a sock_common in request_sock")
I forgot that the two ports in sock_common do not have same byte order :
skc_dport is __be16 (network order), but skc_num is __u16 (host order)
So sparse complains because ir_loc_port (mapped into skc_num) is
considered as __u16 while it should be __be16
Let rename ir_loc_port to ireq->ir_num (analogy with inet->inet_num),
and perform appropriate htons/ntohs conversions.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
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When the HCI_SETUP flag is set the controller has not yet been announced
over mgmt and therefore doesn't exist from that perspective. If we
nevertheless get a mgmt command for it we should respond with the
appropriate INVALID_INDEX error.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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A couple times recently somebody has noticed that we're ignoring a
sequence number here and wondered whether there's a bug.
In fact, there's not. Thanks to Andy Adamson for pointing out a useful
explanation in rfc 2203. Add comments citing that rfc, and remove
"seqnum" to prevent static checkers complaining about unused variables.
Reported-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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