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Only when BR/EDR is supported and enabled, allow changing of the SSP
setting. Just checking if the hardware supports SSP is not enough
since it might be the case that BR/EDR is disabled.
In the case that BR/EDR is disabled, but SSP supported by the
controller the not supported error message is now returned.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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IPv4 mapped addresses cause kernel panic.
The patch juste check whether the IPv6 address is an IPv4 mapped
address. If so, use IPv4 API instead of IPv6.
[ 940.026915] general protection fault: 0000 [#1]
[ 940.026915] Modules linked in: l2tp_ppp l2tp_netlink l2tp_core pppox ppp_generic slhc loop psmouse
[ 940.026915] CPU: 0 PID: 3184 Comm: memcheck-amd64- Not tainted 3.11.0+ #1
[ 940.026915] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
[ 940.026915] task: ffff880007130e20 ti: ffff88000737e000 task.ti: ffff88000737e000
[ 940.026915] RIP: 0010:[<ffffffff81333780>] [<ffffffff81333780>] ip6_xmit+0x276/0x326
[ 940.026915] RSP: 0018:ffff88000737fd28 EFLAGS: 00010286
[ 940.026915] RAX: c748521a75ceff48 RBX: ffff880000c30800 RCX: 0000000000000000
[ 940.026915] RDX: ffff88000075cc4e RSI: 0000000000000028 RDI: ffff8800060e5a40
[ 940.026915] RBP: ffff8800060e5a40 R08: 0000000000000000 R09: ffff88000075cc90
[ 940.026915] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88000737fda0
[ 940.026915] R13: 0000000000000000 R14: 0000000000002000 R15: ffff880005d3b580
[ 940.026915] FS: 00007f163dc5e800(0000) GS:ffffffff81623000(0000) knlGS:0000000000000000
[ 940.026915] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 940.026915] CR2: 00000004032dc940 CR3: 0000000005c25000 CR4: 00000000000006f0
[ 940.026915] Stack:
[ 940.026915] ffff88000075cc4e ffffffff81694e90 ffff880000c30b38 0000000000000020
[ 940.026915] 11000000523c4bac ffff88000737fdb4 0000000000000000 ffff880000c30800
[ 940.026915] ffff880005d3b580 ffff880000c30b38 ffff8800060e5a40 0000000000000020
[ 940.026915] Call Trace:
[ 940.026915] [<ffffffff81356cc3>] ? inet6_csk_xmit+0xa4/0xc4
[ 940.026915] [<ffffffffa0038535>] ? l2tp_xmit_skb+0x503/0x55a [l2tp_core]
[ 940.026915] [<ffffffff812b8d3b>] ? pskb_expand_head+0x161/0x214
[ 940.026915] [<ffffffffa003e91d>] ? pppol2tp_xmit+0xf2/0x143 [l2tp_ppp]
[ 940.026915] [<ffffffffa00292e0>] ? ppp_channel_push+0x36/0x8b [ppp_generic]
[ 940.026915] [<ffffffffa00293fe>] ? ppp_write+0xaf/0xc5 [ppp_generic]
[ 940.026915] [<ffffffff8110ead4>] ? vfs_write+0xa2/0x106
[ 940.026915] [<ffffffff8110edd6>] ? SyS_write+0x56/0x8a
[ 940.026915] [<ffffffff81378ac0>] ? system_call_fastpath+0x16/0x1b
[ 940.026915] Code: 00 49 8b 8f d8 00 00 00 66 83 7c 11 02 00 74 60 49
8b 47 58 48 83 e0 fe 48 8b 80 18 01 00 00 48 85 c0 74 13 48 8b 80 78 02
00 00 <48> ff 40 28 41 8b 57 68 48 01 50 30 48 8b 54 24 08 49 c7 c1 51
[ 940.026915] RIP [<ffffffff81333780>] ip6_xmit+0x276/0x326
[ 940.026915] RSP <ffff88000737fd28>
[ 940.057945] ---[ end trace be8aba9a61c8b7f3 ]---
[ 940.058583] Kernel panic - not syncing: Fatal exception in interrupt
Signed-off-by: François CACHEREUL <f.cachereul@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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commit 3ab5aee7fe84 ("net: Convert TCP & DCCP hash tables to use RCU /
hlist_nulls") incorrectly used sock_put() on TIMEWAIT sockets.
We should instead use inet_twsk_put()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert the memset/memcpy uses of 6 to ETH_ALEN
where appropriate.
Also convert some struct definitions and u8 array
declarations of [6] to ETH_ALEN.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tcp_fixup_sndbuf() is underestimating initial send buffer requirements.
It was not noticed because big GSO packets were escaping the limitation,
but with smaller TSO packets (or TSO/GSO/SG off), application hits
sk_sndbuf before having a chance to fill enough packets in socket write
queue.
- initial cwnd can be bigger than 10 for specific routes
- SKB_TRUESIZE() is a bit under real needs in some cases,
because of power-of-two rounding in kmalloc()
- Fast Recovery (RFC 5681 3.2) : Cubic needs 70% factor
- Extra cushion (application might react slowly to POLLOUT)
tcp_v4_conn_req_fastopen() needs to call tcp_init_metrics() before
calling tcp_init_buffer_space()
Then we realize tcp_new_space() should call tcp_fixup_sndbuf()
instead of duplicating this stuff.
Rename tcp_fixup_sndbuf() to tcp_sndbuf_expand() to be more
descriptive.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Because 'node' is the i'st child of 'oldnode',
thus, here 'i' equals
tkey_extract_bits(node->key, oldtnode->pos, oldtnode->bits)
we just get 1 more bit,
and need not care the detail value of this bits.
I apologize for the mistake.
I generated the patch on a branch version,
and did not notice the put_child has been changed.
I have redone the test on HEAD version with my patch.
two cases are used.
case 1. inflate a node which has a leaf child node.
case 2: inflate a node which has a an child node with skipped bits
test env:
ip link set eth0 up
ip a add dev eth0 192.168.11.1/32
here, we just focus on route table(MAIN),
so I use a "192.168.11.1/32" address to simplify the test case.
call trace:
+ fib_insert_node
+ + trie_rebalance
+ + + resize
+ + + + inflate
Test case 1: inflate a node which has a leaf child node.
===========================================================
step 1. prepare a fib trie
------------------------------------------
ip r a 192.168.0.0/24 via 192.168.11.1
ip r a 192.168.1.0/24 via 192.168.11.1
we get a fib trie.
root@baker:~# cat /proc/net/fib_trie
Main:
+-- 192.168.0.0/23 1 0 0
|-- 192.168.0.0
/24 universe UNICAST
|-- 192.168.1.0
/24 universe UNICAST
Local:
.....
step 2. Add the third route
------------------------------------------
root@baker:~# ip r a 192.168.2.0/24 via 192.168.11.1
A fib_trie leaf will be inserted in fib_insert_node before trie_rebalance.
For function 'inflate':
'inflate' is called with following trie.
+-- 192.168.0.0/22 1 1 0 <=== tn node
+-- 192.168.0.0/23 1 0 0 <== node a
|-- 192.168.0.0
/24 universe UNICAST
|-- 192.168.1.0
/24 universe UNICAST
|-- 192.168.2.0 <== leaf(node b)
When process node b, which is a leaf. here:
i is 1,
node key "192.168.2.0"
oldnode is (pos:22, bits:1)
unpatch source:
tkey_extract_bits(node->key, oldtnode->pos + oldtnode->bits, 1)
it equals:
tkey_extract_bits("192.168,2,0", 22 + 1, 1)
thus got 0, and call put_child(tn, 2*i, node); <== 2*i=2.
patched source:
tkey_extract_bits(node->key, oldtnode->pos, oldtnode->bits + 1),
tkey_extract_bits("192.168,2,0", 22, 1 + 1) <== get 2.
Test case 2: inflate a node which has a an child node with skipped bits
==========================================================================
step 1. prepare a fib trie.
ip link set eth0 up
ip a add dev eth0 192.168.11.1/32
ip r a 192.168.128.0/24 via 192.168.11.1
ip r a 192.168.0.0/24 via 192.168.11.1
ip r a 192.168.16.0/24 via 192.168.11.1
ip r a 192.168.32.0/24 via 192.168.11.1
ip r a 192.168.48.0/24 via 192.168.11.1
ip r a 192.168.144.0/24 via 192.168.11.1
ip r a 192.168.160.0/24 via 192.168.11.1
ip r a 192.168.176.0/24 via 192.168.11.1
check:
root@baker:~# cat /proc/net/fib_trie
Main:
+-- 192.168.0.0/16 1 0 0
+-- 192.168.0.0/18 2 0 0
|-- 192.168.0.0
/24 universe UNICAST
|-- 192.168.16.0
/24 universe UNICAST
|-- 192.168.32.0
/24 universe UNICAST
|-- 192.168.48.0
/24 universe UNICAST
+-- 192.168.128.0/18 2 0 0
|-- 192.168.128.0
/24 universe UNICAST
|-- 192.168.144.0
/24 universe UNICAST
|-- 192.168.160.0
/24 universe UNICAST
|-- 192.168.176.0
/24 universe UNICAST
Local:
...
step 2. add a route to trigger inflate.
ip r a 192.168.96.0/24 via 192.168.11.1
This command will call serveral times inflate.
In the first time, the fib_trie is:
________________________
+-- 192.168.128.0/(16, 1) <== tn node
+-- 192.168.0.0/(17, 1) <== node a
+-- 192.168.0.0/(18, 2)
|-- 192.168.0.0
|-- 192.168.16.0
|-- 192.168.32.0
|-- 192.168.48.0
|-- 192.168.96.0
+-- 192.168.128.0/(18, 2) <== node b.
|-- 192.168.128.0
|-- 192.168.144.0
|-- 192.168.160.0
|-- 192.168.176.0
NOTE: node b is a interal node with skipped bits.
here,
i:1,
node->key "192.168.128.0",
oldnode:(pos:16, bits:1)
so
tkey_extract_bits(node->key, oldtnode->pos + oldtnode->bits, 1)
it equals:
tkey_extract_bits("192.168,128,0", 16 + 1, 1) <=== 0
tkey_extract_bits(node->key, oldtnode->pos, oldtnode->bits, 1)
it equals:
tkey_extract_bits("192.168,128,0", 16, 1+1) <=== 2
2*i + 0 == 2, so the result is same.
Signed-off-by: baker.zhang <baker.kernel@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tcp_established_options assumes opts->options is 0 before calling,
as it read modify writes it.
For the tcp_current_mss() case the opts structure is not zeroed,
so this can be done with uninitialized values.
This is ok, because ->options is not read in this path.
But it's still better to avoid the operation on the uninitialized
field. This shuts up a static code analyzer, and presumably
may help the optimizer.
Cc: netdev@vger.kernel.org
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The wrong type of L2CAP signalling packets on the wrong type of
either BR/EDR or LE links need to be dropped. When that happens
the packet is dropped, but the memory not freed. So actually
free the memory as well.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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When filling the netlink message we miss to wipe the pad field,
therefore leak one byte of heap memory to userland. Fix this by
setting pad to 0.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch increments the management interface revision due to the
various fixes, improvements and other changes that have gone in
lately.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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We shouldn't include the simultaneous LE & BR/EDR flags in the LE
advertising data if BR/EDR is disabled on a dual-mode controller. This
patch fixes this issue and ensures that the create_ad function generates
the correct flags when BR/EDR is disabled.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The REJECTED management response should mainly be used when the adapter
is in a state where we cannot accept some command or a specific
parameter value. The NOT_SUPPORTED response in turn means that the
adapter really cannot support the command or parameter value.
This patch fixes this distinction and adds two helper functions to
easily get the appropriate LE or BR/EDR related status response.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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On dual-mode BR/EDR/LE and LE only controllers it is possible
to configure a random address. There are two types or random
addresses, one is static and the other private. Since the
random private addresses require special privacy feature to
be supported, the configuration of these two are kept separate.
This command allows for setting the static random address. It is
only supported on controllers with LE support. The static random
address is suppose to be valid for the lifetime of the controller
or at least until the next power cycle. To ensure such behavior,
setting of the address is limited to when the controller is
powered off.
The special BDADDR_ANY address (00:00:00:00:00:00) can be used to
disable the static address. This is also the default value.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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batman-adv saves its table of packet handlers as a global state, so handlers
must be set up only once (and setting them up a second time will fail).
The recently-added network coding support tries to set up its handler each time
a new softif is registered, which obviously fails when more that one softif is
used (and in consequence, the softif creation fails).
Fix this by splitting up batadv_nc_init into batadv_nc_init (which is called
only once) and batadv_nc_mesh_init (which is called for each softif); in
addition batadv_nc_free is renamed to batadv_nc_mesh_free to keep naming
consistent.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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Disabling the high speed setting when the controller is powered on has
too many side effects that are not taken care of. And in general it
is not an useful operation anyway. So just make such a command fail
with a rejection error message.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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This patch introduces a new mgmt command for enabling/disabling BR/EDR
functionality. This can be convenient when one wants to make a dual-mode
controller behave like a single-mode one. The command is only available
for dual-mode controllers and requires that LE is enabled before using
it. The BR/EDR setting can be enabled at any point, however disabling it
requires the controller to be powered off (otherwise a "rejected"
response will be sent).
Disabling the BR/EDR setting will automatically disable all other BR/EDR
related settings.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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To allow treating dual-mode (BR/EDR/LE) controllers as single-mode ones
(LE-only) we want to introduce a new HCI_BREDR_ENABLED flag to track
whether BR/EDR is enabled or not (previously we simply looked at the
feature bit with lmp_bredr_enabled).
This patch add the new flag and updates the relevant places to test
against it instead of using lmp_bredr_enabled. The flag is by default
enabled when registering an adapter and only cleared if necessary once
the local features have been read during the HCI init procedure.
We cannot completely block BR/EDR usage in case user space uses raw HCI
sockets but the patch tries to block this in places where possible, such
as the various BR/EDR specific ioctls.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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When hci_sock.c calls hci_dev_open it needs to ensure that there isn't
pending work in progress, such as that which is scheduled for the
initial setup procedure or the one for automatically powering off after
the setup procedure. This adds the necessary calls to ensure that any
previously scheduled work is completed before attempting to call
hci_dev_do_open.
This patch fixes a race with old user space versions where we might
receive a HCIDEVUP ioctl before the setup procedure has been completed.
When that happens the setup procedures callback may fail early and leave
the device in an inconsistent state, causing e.g. the setup callback to
be (incorrectly) called more than once.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The requirements of an external call to hci_dev_open from hci_sock.c are
different to that from within hci_core.c. In the former case we want to
flush any pending work in hdev->req_workqueue whereas in the latter we
don't (since there we are already calling from within the workqueue
itself). This patch does the necessary refactoring to a separate
hci_dev_do_open function (analogous to hci_dev_do_close) but does not
yet introduce the synchronizations relating to the workqueue usage.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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The Bluetooth protocol and hardware is pretty much all little endian
and so when running sparse via "make C=2" for example, enable the
endian checks by default.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The HCI User Channel operation is an admin operation that puts the
device into promiscuous mode for single use. It is more suitable
to require CAP_NET_ADMIN than CAP_NET_RAW.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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When enabling or disabling high speed setting it is required to send
a new settings event to inform other management interface users about
the changed settings.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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Hiding the Bluetooth high speed support behind a module parameter is
not really useful. This can be enabled and disabled at runtime via
the management interface. This also has the advantage that this can
now be changed per controller and not just global.
This patch removes the module parameter and exposes the high speed
setting of the management interface to all controllers.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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The controller type is limited to BR/EDR/LE and AMP controllers. This
can be easily encoded with just 2 bits and still leave enough room
for future controller types.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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Conflicts:
drivers/net/ethernet/emulex/benet/be.h
drivers/net/usb/qmi_wwan.c
drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h
include/net/netfilter/nf_conntrack_synproxy.h
include/net/secure_seq.h
The conflicts are of two varieties:
1) Conflicts with Joe Perches's 'extern' removal from header file
function declarations. Usually it's an argument signature change
or a function being added/removed. The resolutions are trivial.
2) Some overlapping changes in qmi_wwan.c and be.h, one commit adds
a new value, another changes an existing value. That sort of
thing.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull networking changes from David Miller:
1) Multiply in netfilter IPVS can overflow when calculating destination
weight. From Simon Kirby.
2) Use after free fixes in IPVS from Julian Anastasov.
3) SFC driver bug fixes from Daniel Pieczko.
4) Memory leak in pcan_usb_core failure paths, from Alexey Khoroshilov.
5) Locking and encapsulation fixes to serial line CAN driver, from
Andrew Naujoks.
6) Duplex and VF handling fixes to bnx2x driver from Yaniv Rosner,
Eilon Greenstein, and Ariel Elior.
7) In lapb, if no other packets are outstanding, T1 timeouts actually
stall things and no packet gets sent. Fix from Josselin Costanzi.
8) ICMP redirects should not make it to the socket error queues, from
Duan Jiong.
9) Fix bugs in skge DMA mapping error handling, from Nikulas Patocka.
10) Fix setting of VLAN priority field on via-rhine driver, from Roget
Luethi.
11) Fix TX stalls and VLAN promisc programming in be2net driver from
Ajit Khaparde.
12) Packet padding doesn't get handled correctly in new usbnet SG
support code, from Ming Lei.
13) Fix races in netdevice teardown wrt. network namespace closing.
From Eric W. Biederman.
14) Fix potential missed initialization of net_secret if not TCP
connections are openned. From Eric Dumazet.
15) Cinterion PLXX product ID in qmi_wwan driver is wrong, from
Aleksander Morgado.
16) skb_cow_head() can change skb->data and thus packet header pointers,
don't use stale ip_hdr reference in ip_tunnel code.
17) Backend state transition handling fixes in xen-netback, from Paul
Durrant.
18) Packet offset for AH protocol is handled wrong in flow dissector,
from Eric Dumazet.
19) Taking down an fq packet scheduler instance can leave stale packets
in the queues, fix from Eric Dumazet.
20) Fix performance regressions introduced by TCP Small Queues. From
Eric Dumazet.
21) IPV6 GRE tunneling code calculates max_headroom incorrectly, from
Hannes Frederic Sowa.
22) Multicast timer handlers in ipv4 and ipv6 can be the last and final
reference to the ipv4/ipv6 specific network device state, so use the
reference put that will check and release the object if the
reference hits zero. From Salam Noureddine.
23) Fix memory corruption in ip_tunnel driver, and use skb_push()
instead of __skb_push() so that similar bugs are less hard to find.
From Steffen Klassert.
24) Add forgotten hookup of rtnl_ops in SIT and ip6tnl drivers, from
Nicolas Dichtel.
25) fq scheduler doesn't accurately rate limit in certain circumstances,
from Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (103 commits)
pkt_sched: fq: rate limiting improvements
ip6tnl: allow to use rtnl ops on fb tunnel
sit: allow to use rtnl ops on fb tunnel
ip_tunnel: Remove double unregister of the fallback device
ip_tunnel_core: Change __skb_push back to skb_push
ip_tunnel: Add fallback tunnels to the hash lists
ip_tunnel: Fix a memory corruption in ip_tunnel_xmit
qlcnic: Fix SR-IOV configuration
ll_temac: Reset dma descriptors indexes on ndo_open
skbuff: size of hole is wrong in a comment
ipv6 mcast: use in6_dev_put in timer handlers instead of __in6_dev_put
ipv4 igmp: use in_dev_put in timer handlers instead of __in_dev_put
ethernet: moxa: fix incorrect placement of __initdata tag
ipv6: gre: correct calculation of max_headroom
powerpc/83xx: gianfar_ptp: select 1588 clock source through dts file
Revert "powerpc/83xx: gianfar_ptp: select 1588 clock source through dts file"
bonding: Fix broken promiscuity reference counting issue
tcp: TSQ can use a dynamic limit
dm9601: fix IFF_ALLMULTI handling
pkt_sched: fq: qdisc dismantle fixes
...
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FQ rate limiting suffers from two problems, reported
by Steinar :
1) FQ enforces a delay when flow quantum is exhausted in order
to reduce cpu overhead. But if packets are small, current
delay computation is slightly wrong, and observed rates can
be too high.
Steinar had this problem because he disabled TSO and GSO,
and default FQ quantum is 2*1514.
(Of course, I wish recent TSO auto sizing changes will help
to not having to disable TSO in the first place)
2) maxrate was not used for forwarded flows (skbs not attached
to a socket)
Tested:
tc qdisc add dev eth0 root est 1sec 4sec fq maxrate 8Mbit
netperf -H lpq84 -l 1000 &
sleep 10 ; tc -s qdisc show dev eth0
qdisc fq 8003: root refcnt 32 limit 10000p flow_limit 100p buckets 1024
quantum 3028 initial_quantum 15140 maxrate 8000Kbit
Sent 16819357 bytes 11258 pkt (dropped 0, overlimits 0 requeues 0)
rate 7831Kbit 653pps backlog 7570b 5p requeues 0
44 flows (43 inactive, 1 throttled), next packet delay 2977352 ns
0 gc, 0 highprio, 5545 throttled
lpq83:~# tcpdump -p -i eth0 host lpq84 -c 12
09:02:52.079484 IP lpq83 > lpq84: . 1389536928:1389538376(1448) ack 3808678021 win 457 <nop,nop,timestamp 961812 572609068>
09:02:52.079499 IP lpq83 > lpq84: . 1448:2896(1448) ack 1 win 457 <nop,nop,timestamp 961812 572609068>
09:02:52.079906 IP lpq84 > lpq83: . ack 2896 win 16384 <nop,nop,timestamp 572609080 961812>
09:02:52.082568 IP lpq83 > lpq84: . 2896:4344(1448) ack 1 win 457 <nop,nop,timestamp 961815 572609071>
09:02:52.082581 IP lpq83 > lpq84: . 4344:5792(1448) ack 1 win 457 <nop,nop,timestamp 961815 572609071>
09:02:52.083017 IP lpq84 > lpq83: . ack 5792 win 16384 <nop,nop,timestamp 572609083 961815>
09:02:52.085678 IP lpq83 > lpq84: . 5792:7240(1448) ack 1 win 457 <nop,nop,timestamp 961818 572609074>
09:02:52.085693 IP lpq83 > lpq84: . 7240:8688(1448) ack 1 win 457 <nop,nop,timestamp 961818 572609074>
09:02:52.086117 IP lpq84 > lpq83: . ack 8688 win 16384 <nop,nop,timestamp 572609086 961818>
09:02:52.088792 IP lpq83 > lpq84: . 8688:10136(1448) ack 1 win 457 <nop,nop,timestamp 961821 572609077>
09:02:52.088806 IP lpq83 > lpq84: . 10136:11584(1448) ack 1 win 457 <nop,nop,timestamp 961821 572609077>
09:02:52.089217 IP lpq84 > lpq83: . ack 11584 win 16384 <nop,nop,timestamp 572609090 961821>
Reported-by: Steinar H. Gunderson <sesse@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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rtnl ops where introduced by c075b13098b3 ("ip6tnl: advertise tunnel param via
rtnl"), but I forget to assign rtnl ops to fb tunnels.
Now that it is done, we must remove the explicit call to
unregister_netdevice_queue(), because the fallback tunnel is added to the queue
in ip6_tnl_destroy_tunnels() when checking rtnl_link_ops of all netdevices (this
is valid since commit 0bd8762824e7 ("ip6tnl: add x-netns support")).
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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rtnl ops where introduced by ba3e3f50a0e5 ("sit: advertise tunnel param via
rtnl"), but I forget to assign rtnl ops to fb tunnels.
Now that it is done, we must remove the explicit call to
unregister_netdevice_queue(), because the fallback tunnel is added to the queue
in sit_destroy_tunnels() when checking rtnl_link_ops of all netdevices (this
is valid since commit 5e6700b3bf98 ("sit: add support of x-netns")).
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When queueing the netdevices for removal, we queue the
fallback device twice in ip_tunnel_destroy(). The first
time when we queue all netdevices in the namespace and
then again explicitly. Fix this by removing the explicit
queueing of the fallback device.
Bug was introduced when network namespace support was added
with commit 6c742e714d8 ("ipip: add x-netns support").
Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Git commit 0e6fbc5b ("ip_tunnels: extend iptunnel_xmit()")
moved the IP header installation to iptunnel_xmit() and
changed skb_push() to __skb_push(). This makes possible
bugs hard to track down, so change it back to skb_push().
Cc: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently we can not update the tunnel parameters of
the fallback tunnels because we don't find them in the
hash lists. Fix this by adding them on initialization.
Bug was introduced with commit c544193214
("GRE: Refactor GRE tunneling code.")
Cc: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We might extend the used aera of a skb beyond the total
headroom when we install the ipip header. Fix this by
calling skb_cow_head() unconditionally.
Bug was introduced with commit c544193214
("GRE: Refactor GRE tunneling code.")
Cc: Pravin Shelar <pshelar@nicira.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pablo Neira Ayuso says:
====================
The following patchset contains Netfilter/IPVS fixes for your net
tree, they are:
* Fix BUG_ON splat due to malformed TCP packets seen by synproxy, from
Patrick McHardy.
* Fix possible weight overflow in lblc and lblcr schedulers due to
32-bits arithmetics, from Simon Kirby.
* Fix possible memory access race in the lblc and lblcr schedulers,
introduced when it was converted to use RCU, two patches from
Julian Anastasov.
* Fix hard dependency on CPU 0 when reading per-cpu stats in the
rate estimator, from Julian Anastasov.
* Fix race that may lead to object use after release, when invoking
ipvsadm -C && ipvsadm -R, introduced when adding RCU, from Julian
Anastasov.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Default timeouts are currently set via proc/sysctl interface, the
typical pattern is a file name like:
/proc/sys/net/netfilter/nf_conntrack_PROTOCOL_timeout_STATE
This results in one entry per default protocol state timeout.
This patch simplifies this by allowing to set default protocol
timeouts via cttimeout netlink interface.
This should allow us to get rid of the existing proc/sysctl code
in the midterm.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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There are currently seven different NAT hooks used in both
nf_conntrack_sip and nf_nat_sip, each of the hooks is exported in
nf_conntrack_sip, then set from the nf_nat_sip NAT helper.
And because each of them is exported there is quite some overhead
introduced due of this.
By introducing nf_nat_sip_hooks I am able to reduce both text/data
somewhat. For nf_conntrack_sip e. g. I get
text data bss dec
old 15243 5256 32 20531
new 15010 5192 32 20234
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Use proper net struct to allocate skb, otherwise
netlink mmap will be of no effect.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Use proper net struct to allocate skb, otherwise netlink mmap
will have no effect.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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It is possible for the timer handlers to run after the call to
ipv6_mc_down so use in6_dev_put instead of __in6_dev_put in the
handler function in order to do proper cleanup when the refcnt
reaches 0. Otherwise, the refcnt can reach zero without the
inet6_dev being destroyed and we end up leaking a reference to
the net_device and see messages like the following,
unregister_netdevice: waiting for eth0 to become free. Usage count = 1
Tested on linux-3.4.43.
Signed-off-by: Salam Noureddine <noureddine@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is possible for the timer handlers to run after the call to
ip_mc_down so use in_dev_put instead of __in_dev_put in the handler
function in order to do proper cleanup when the refcnt reaches 0.
Otherwise, the refcnt can reach zero without the in_device being
destroyed and we end up leaking a reference to the net_device and
see messages like the following,
unregister_netdevice: waiting for eth0 to become free. Usage count = 1
Tested on linux-3.4.43.
Signed-off-by: Salam Noureddine <noureddine@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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gre_hlen already accounts for sizeof(struct ipv6_hdr) + gre header,
so initialize max_headroom to zero. Otherwise the
if (encap_limit >= 0) {
max_headroom += 8;
mtu -= 8;
}
increments an uninitialized variable before max_headroom was reset.
Found with coverity: 728539
Cc: Dmitry Kozlov <xeb@mail.ru>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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- Move sysctl_local_ports from a global variable into struct netns_ipv4.
- Modify inet_get_local_port_range to take a struct net, and update all
of the callers.
- Move the initialization of sysctl_local_ports into
sysctl_net_ipv4.c:ipv4_sysctl_init_net from inet_connection_sock.c
v2:
- Ensure indentation used tabs
- Fixed ip.h so it applies cleanly to todays net-next
v3:
- Compile fixes of strange callers of inet_get_local_port_range.
This patch now successfully passes an allmodconfig build.
Removed manual inlining of inet_get_local_port_range in ipv4_local_port_range
Originally-by: Samya <samya@twitter.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Mark code path's likely/unlikely based on most common usage.
* Very few devices use dsa tags.
* Most traffic is Ethernet (not 802.2)
* No sane person uses trailer type or Novell encapsulation
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove old legacy comment and weird if condition.
The comment has outlived it's stay and is throwback to some
early net code (before my time). Maybe Dave remembers what it meant.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When TCP Small Queues was added, we used a sysctl to limit amount of
packets queues on Qdisc/device queues for a given TCP flow.
Problem is this limit is either too big for low rates, or too small
for high rates.
Now TCP stack has rate estimation in sk->sk_pacing_rate, and TSO
auto sizing, it can better control number of packets in Qdisc/device
queues.
New limit is two packets or at least 1 to 2 ms worth of packets.
Low rates flows benefit from this patch by having even smaller
number of packets in queues, allowing for faster recovery,
better RTT estimations.
High rates flows benefit from this patch by allowing more than 2 packets
in flight as we had reports this was a limiting factor to reach line
rate. [ In particular if TX completion is delayed because of coalescing
parameters ]
Example for a single flow on 10Gbp link controlled by FQ/pacing
14 packets in flight instead of 2
$ tc -s -d qd
qdisc fq 8001: dev eth0 root refcnt 32 limit 10000p flow_limit 100p
buckets 1024 quantum 3028 initial_quantum 15140
Sent 1168459366606 bytes 771822841 pkt (dropped 0, overlimits 0
requeues 6822476)
rate 9346Mbit 771713pps backlog 953820b 14p requeues 6822476
2047 flow, 2046 inactive, 1 throttled, delay 15673 ns
2372 gc, 0 highprio, 0 retrans, 9739249 throttled, 0 flows_plimit
Note that sk_pacing_rate is currently set to twice the actual rate, but
this might be refined in the future when a flow is in congestion
avoidance.
Additional change : skb->destructor should be set to tcp_wfree().
A future patch (for linux 3.13+) might remove tcp_limit_output_bytes
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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setting fl6.flowi6_flags as zero after memset is redundant, Remove it.
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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fq_reset() should drops all packets in queue, including
throttled flows.
This patch moves code from fq_destroy() to fq_reset()
to do the cleaning.
fq_change() must stop calling fq_dequeue() if all remaining
packets are from throttled flows.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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err is set once, then first code resets it.
err = tcf_exts_validate(...)
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Jamal Hadi Salim <hadi@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Rather than returning earlier value (EINVAL), return ENOMEM if
kzalloc fails. Found while reviewing to find another EINVAL condition.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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