| Age | Commit message (Collapse) | Author |
|---|
|
MGMT_EV_DEVICE_DISCONNECTED will now expose the disconnection reason to
userland, distinguishing four possible values:
0x00 Reason not known or unspecified
0x01 Connection timeout
0x02 Connection terminated by local host
0x03 Connection terminated by remote host
Note that the local/remote distinction just determines which side
terminated the low-level connection, regardless of the disconnection of
the higher-level profiles.
This can sometimes be misleading and thus must be used with care. For
example, some hardware combinations would report a locally initiated
disconnection even if the user turned Bluetooth off in the remote side.
Signed-off-by: Mikel Astiz <mikel.astiz@bmw-carit.de>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
|
|
Add more HCI error codes as defined in the specification.
Signed-off-by: Mikel Astiz <mikel.astiz@bmw-carit.de>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
|
|
Some devices like the current iwlwifi implementation
require that the P2P interface address match the P2P
Device address (only one P2P interface is supported.)
Add the HW flag IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF
that allows drivers to request that P2P Interfaces
added while a P2P Device is active get the same MAC
address by default.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
|
In order to support using a different MAC address
for the P2P Device address we must first have a
P2P Device abstraction that can be assigned a MAC
address.
This abstraction will also be useful to support
offloading P2P operations to the device, e.g.
periodic listen for discoverability.
Currently, the driver is responsible for assigning
a MAC address to the P2P Device, but this could be
changed by allowing a MAC address to be given to
the NEW_INTERFACE command.
As it has no associated netdev, a P2P Device can
only be identified by its wdev identifier but the
previous patches allowed using the wdev identifier
in various APIs, e.g. remain-on-channel.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
|
Support getting A-MPDU status information from the
drivers and reporting it to userspace via radiotap
in the standard fields.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
|
Define the A-MPDU status field in radiotap, also
update the radiotap parser for it and the MCS field
that was apparently missed last time.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
|
In IBSS it is possible that the supported rates set for a station changes over
time (e.g. it gets first initialised as an empty set because of no available
information about rates and updated later). In this case the driver has to be
notified about the change in order to update its internal table accordingly (if
needed).
This behaviour is needed by all those drivers that handle rc internally but
leave stations management to mac80211
Reported-by: Gui Iribarren <gui@altermundi.net>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
[Johannes - add docs, validate IBSS mode only, fix compilation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
|
Commit 97bab73f (inet: Hide route peer accesses behind helpers.) introduced
a bug in xfrm6_policy_destroy(). The xfrm_dst's _rt6i_peer member is not
initialized, causing a false positive result from inetpeer_ptr_is_peer(),
which in turn causes a NULL pointer dereference in inet_putpeer().
Pid: 314, comm: kworker/0:1 Not tainted 3.6.0-rc1+ #17 To Be Filled By O.E.M. To Be Filled By O.E.M./P4S800D-X
EIP: 0060:[<c03abf93>] EFLAGS: 00010246 CPU: 0
EIP is at inet_putpeer+0xe/0x16
EAX: 00000000 EBX: f3481700 ECX: 00000000 EDX: 000dd641
ESI: f3481700 EDI: c05e949c EBP: f551def4 ESP: f551def4
DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
CR0: 8005003b CR2: 00000070 CR3: 3243d000 CR4: 00000750
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff0ff0 DR7: 00000400
f551df04 c0423de1 00000000 f3481700 f551df18 c038d5f7 f254b9f8 f551df28
f34f85d8 f551df20 c03ef48d f551df3c c0396870 f30697e8 f24e1738 c05e98f4
f5509540 c05cd2b4 f551df7c c0142d2b c043feb5 f5509540 00000000 c05cd2e8
[<c0423de1>] xfrm6_dst_destroy+0x42/0xdb
[<c038d5f7>] dst_destroy+0x1d/0xa4
[<c03ef48d>] xfrm_bundle_flo_delete+0x2b/0x36
[<c0396870>] flow_cache_gc_task+0x85/0x9f
[<c0142d2b>] process_one_work+0x122/0x441
[<c043feb5>] ? apic_timer_interrupt+0x31/0x38
[<c03967eb>] ? flow_cache_new_hashrnd+0x2b/0x2b
[<c0143e2d>] worker_thread+0x113/0x3cc
Fix by adding a init_dst() callback to struct xfrm_policy_afinfo to
properly initialize the dst's peer pointer.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
John W. Linville says:
====================
This is a batch of updates intended for 3.7. The ath9k, mwifiex,
and b43 drivers get the bulk of the commits this time, with a handful
of other driver bits thrown-in. It is mostly just minor fixes and
cleanups, etc.
Also included is a Bluetooth pull, with a lot of refactoring.
Gustavo says:
"These are the changes I queued for 3.7. There are a many
small fixes/improvements by Andre Guedes. A l2cap channel
refcounting refactor by Jaganath. Bluetooth sockets now
appears in /proc/net, by Masatake Yamato and Sachin Kamat
changes ours drivers to use devm_kzalloc()."
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Sematically speaking, xfrm_mgr.acquire is called when kernel intends to ask
user space IKE daemon to negotiate SAs with peers. IOW the direction will
*always* be XFRM_POLICY_OUT, so remove int dir for clarity.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
|
|
I got the following compile error:
In file included from include/net/sctp/checksum.h:46:0,
from net/ipv4/netfilter/nf_nat_proto_sctp.c:14:
include/net/sctp/sctp.h: In function ‘sctp_dbg_objcnt_init’:
include/net/sctp/sctp.h:370:88: error: parameter name omitted
include/net/sctp/sctp.h: In function ‘sctp_dbg_objcnt_exit’:
include/net/sctp/sctp.h:371:88: error: parameter name omitted
which is caused by
commit 13d782f6b4fbbaf9d0380a9947deb45a9de46ae7
Author: Eric W. Biederman <ebiederm@xmission.com>
Date: Mon Aug 6 08:45:15 2012 +0000
sctp: Make the proc files per network namespace.
This patch could fix it.
Cc: David S. Miller <davem@davemloft.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Add struct net as a parameter to sctp_verify_param so it can be passed
to sctp_verify_ext_param where struct net will be needed when the sctp
tunables become per net tunables.
Add struct net as a parameter to sctp_verify_init so struct net can be
passed to sctp_verify_param.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
There are a handle of state machine functions primarily those dealing
with processing INIT packets where there is neither a valid endpoint nor
a valid assoication from which to derive a struct net. Therefore add
struct net * to the parameter list of sctp_state_fn_t and update all of
the state machine functions.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
struct net will be needed shortly when the tunables are made per network
namespace.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
This trickles up through sctp_sm_lookup_event up to sctp_do_sm
and up further into sctp_primitiv_NAME before the code reaches
places where struct net can be reliably found.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Start with an empty sctp_net_table that will be populated as the various
tunable sysctls are made per net.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
- Convert all of the files under /proc/net/sctp to be per
network namespace.
- Don't print anything for /proc/net/sctp/snmp except in
the initial network namespaces as the snmp counters still
have to be converted to be per network namespace.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
- Kill sctp_get_ctl_sock, it is useless now.
- Pass struct net where needed so net->sctp.ctl_sock is accessible.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
- Move the address lists into struct net
- Add per network namespace initialization and cleanup
- Pass around struct net so it is everywhere I need it.
- Rename all of the global variable references into references
to the variables moved into struct net
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
- Use struct net in the hash calculation
- Use sock_net(association.base.sk) in the association lookups.
- On receive calculate the network namespace from skb->dev.
- Pass struct net from receive down to the functions that actually
do the association lookup.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
- Use struct net in the hash calculation
- Use sock_net(endpoint.base.sk) in the endpoint lookups.
- On receive calculate the network namespace from skb->dev.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
- Add struct net into the port hash table hash calculation
- Add struct net inot the struct sctp_bind_bucket so there
is a memory of which network namespace a port is allocated in.
No need for a ref count because sctp_bind_bucket only exists
when there are sockets in the hash table and sockets can not
change their network namspace, and sockets already ref count
their network namespace.
- Add struct net into the key comparison when we are testing
to see if we have found the port hash table entry we are
looking for.
With these changes lookups in the port hash table becomes
safe to use in multiple network namespaces.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
cls_flow.c plays with uids and gids. Unless I misread that
code it is possible for classifiers to depend on the specific uid and
gid values. Therefore I need to know the user namespace of the
netlink socket that is installing the packet classifiers. Pass
in the rtnetlink skb so I can access the NETLINK_CB of the passed
packet. In particular I want access to sk_user_ns(NETLINK_CB(in_skb).ssk).
Pass in not the user namespace but the incomming rtnetlink skb into
the the classifier change routines as that is generally the more useful
parameter.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
|
|
Add a helper sk_user_ns to make it easy to find the user namespace
of the process that opened a socket.
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
|
|
Cc: Ralf Baechle <ralf@linux-mips.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
|
|
Correct a long standing omission and use struct pid in the owner
field of struct ip6_flowlabel when the share type is IPV6_FL_S_PROCESS.
This guarantees we don't have issues when pid wraparound occurs.
Use a kuid_t in the owner field of struct ip6_flowlabel when the
share type is IPV6_FL_S_USER to add user namespace support.
In /proc/net/ip6_flowlabel capture the current pid namespace when
opening the file and release the pid namespace when the file is
closed ensuring we print the pid owner value that is meaning to
the reader of the file. Similarly use from_kuid_munged to print
uid values that are meaningful to the reader of the file.
This requires exporting pid_nr_ns so that ipv6 can continue to built
as a module. Yoiks what silliness
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
|
|
- Store sysctl_ping_group_range as a paire of kgid_t values
instead of a pair of gid_t values.
- Move the kgid conversion work from ping_init_sock into ipv4_ping_group_range
- For invalid cases reset to the default disabled state.
With the kgid_t conversion made part of the original value sanitation
from userspace understand how the code will react becomes clearer
and it becomes possible to set the sysctl ping group range from
something other than the initial user namespace.
Cc: Vasiliy Kulikov <segoon@openwall.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
|
|
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
|
|
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
|
|
Some connection related functions are only used inside hci_conn.c
so no need to have them exported.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
|
|
llc_station_init() creates and processes an event skb with no effect
other than to change the state from DOWN to UP. Allocation failure is
reported, but then ignored by its caller, llc2_init(). Remove this
possibility by simply initialising the state as UP.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
GRE over IPv6 implementation.
Signed-off-by: Dmitry Kozlov <xeb@mail.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
One condition before codel_Newton_step() was not good if
we never left the dropping state for a flow. As a result
rec_inv_sqrt was 0, instead of the ~0 initial value.
codel control law was then set to a very aggressive mode, dropping
many packets before reaching 'target' and recovering from this problem.
To keep codel_vars_init() as efficient as possible, refine
the condition to make sure rec_inv_sqrt initial value is correct
Many thanks to Anton Mich for discovering the issue and suggesting
a fix.
Reported-by: Anton Mich <lp2s1h@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
ip_send_skb() can send orphaned skb, so we must pass the net pointer to
avoid possible NULL dereference in error path.
Bug added by commit 3a7c384ffd57 (ipv4: tcp: unicast_sock should not
land outside of TCP stack)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
|
|
commit 5d299f3d3c8a2fb (net: ipv6: fix TCP early demux) added a
regression for ipv6_mapped case.
[ 67.422369] SELinux: initialized (dev autofs, type autofs), uses
genfs_contexts
[ 67.449678] SELinux: initialized (dev autofs, type autofs), uses
genfs_contexts
[ 92.631060] BUG: unable to handle kernel NULL pointer dereference at
(null)
[ 92.631435] IP: [< (null)>] (null)
[ 92.631645] PGD 0
[ 92.631846] Oops: 0010 [#1] SMP
[ 92.632095] Modules linked in: autofs4 sunrpc ipv6 dm_mirror
dm_region_hash dm_log dm_multipath dm_mod video sbs sbshc battery ac lp
parport sg snd_hda_intel snd_hda_codec snd_seq_oss snd_seq_midi_event
snd_seq snd_seq_device pcspkr snd_pcm_oss snd_mixer_oss snd_pcm
snd_timer serio_raw button floppy snd i2c_i801 i2c_core soundcore
snd_page_alloc shpchp ide_cd_mod cdrom microcode ehci_hcd ohci_hcd
uhci_hcd
[ 92.634294] CPU 0
[ 92.634294] Pid: 4469, comm: sendmail Not tainted 3.6.0-rc1 #3
[ 92.634294] RIP: 0010:[<0000000000000000>] [< (null)>]
(null)
[ 92.634294] RSP: 0018:ffff880245fc7cb0 EFLAGS: 00010282
[ 92.634294] RAX: ffffffffa01985f0 RBX: ffff88024827ad00 RCX:
0000000000000000
[ 92.634294] RDX: 0000000000000218 RSI: ffff880254735380 RDI:
ffff88024827ad00
[ 92.634294] RBP: ffff880245fc7cc8 R08: 0000000000000001 R09:
0000000000000000
[ 92.634294] R10: 0000000000000000 R11: ffff880245fc7bf8 R12:
ffff880254735380
[ 92.634294] R13: ffff880254735380 R14: 0000000000000000 R15:
7fffffffffff0218
[ 92.634294] FS: 00007f4516ccd6f0(0000) GS:ffff880256600000(0000)
knlGS:0000000000000000
[ 92.634294] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 92.634294] CR2: 0000000000000000 CR3: 0000000245ed1000 CR4:
00000000000007f0
[ 92.634294] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 92.634294] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 92.634294] Process sendmail (pid: 4469, threadinfo ffff880245fc6000,
task ffff880254b8cac0)
[ 92.634294] Stack:
[ 92.634294] ffffffff813837a7 ffff88024827ad00 ffff880254b6b0e8
ffff880245fc7d68
[ 92.634294] ffffffff81385083 00000000001d2680 ffff8802547353a8
ffff880245fc7d18
[ 92.634294] ffffffff8105903a ffff88024827ad60 0000000000000002
00000000000000ff
[ 92.634294] Call Trace:
[ 92.634294] [<ffffffff813837a7>] ? tcp_finish_connect+0x2c/0xfa
[ 92.634294] [<ffffffff81385083>] tcp_rcv_state_process+0x2b6/0x9c6
[ 92.634294] [<ffffffff8105903a>] ? sched_clock_cpu+0xc3/0xd1
[ 92.634294] [<ffffffff81059073>] ? local_clock+0x2b/0x3c
[ 92.634294] [<ffffffff8138caf3>] tcp_v4_do_rcv+0x63a/0x670
[ 92.634294] [<ffffffff8133278e>] release_sock+0x128/0x1bd
[ 92.634294] [<ffffffff8139f060>] __inet_stream_connect+0x1b1/0x352
[ 92.634294] [<ffffffff813325f5>] ? lock_sock_nested+0x74/0x7f
[ 92.634294] [<ffffffff8104b333>] ? wake_up_bit+0x25/0x25
[ 92.634294] [<ffffffff813325f5>] ? lock_sock_nested+0x74/0x7f
[ 92.634294] [<ffffffff8139f223>] ? inet_stream_connect+0x22/0x4b
[ 92.634294] [<ffffffff8139f234>] inet_stream_connect+0x33/0x4b
[ 92.634294] [<ffffffff8132e8cf>] sys_connect+0x78/0x9e
[ 92.634294] [<ffffffff813fd407>] ? sysret_check+0x1b/0x56
[ 92.634294] [<ffffffff81088503>] ? __audit_syscall_entry+0x195/0x1c8
[ 92.634294] [<ffffffff811cc26e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[ 92.634294] [<ffffffff813fd3e2>] system_call_fastpath+0x16/0x1b
[ 92.634294] Code: Bad RIP value.
[ 92.634294] RIP [< (null)>] (null)
[ 92.634294] RSP <ffff880245fc7cb0>
[ 92.634294] CR2: 0000000000000000
[ 92.648982] ---[ end trace 24e2bed94314c8d9 ]---
[ 92.649146] Kernel panic - not syncing: Fatal exception in interrupt
Fix this using inet_sk_rx_dst_set(), and export this function in case
IPv6 is modular.
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Disabling PMTU discovery can increase the output packet
rate but some users have enough resources and prefer to fragment
than to drop traffic. By default, we copy the DF bit but if
pmtu_disc is disabled we do not send FRAG_NEEDED messages anymore.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
|
|
Get rid of the ftp_app pointer and allow applications
to be registered without adding fields in the netns_ipvs structure.
v2: fix coding style as suggested by Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
|
|
As pointed out, there are places, that access net->loopback_dev->ifindex
and after ifindex generation is made per-net this value becomes constant
equals 1. So go ahead and introduce the LOOPBACK_IFINDEX constant and use
it where appropriate.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Strictly speaking this is only _really_ required for checkpoint-restore to
make loopback device always have the same index.
This change appears to be safe wrt "ifindex should be unique per-system"
concept, as all the ifindex usage is either already made per net namespace
of is explicitly limited with init_net only.
There are two cool side effects of this. The first one -- ifindices of
devices in container are always small, regardless of how many containers
we've started (and re-started) so far. The second one is -- we can speed
up the loopback ifidex access as shown in the next patch.
v2: Place ifindex right after dev_base_seq : avoid two holes and use the
same cache line, dirtied in list_netdevice()/unlist_netdevice()
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Eric noticed, that when there will be devices with equal indices, some
hash functions that use them will become less effective as they could.
Fix this in advance by mixing the net_device address into the hash value
instead of the device index.
This is true for arp and ndisc hash fns. The netlabel, can and llc ones
are also ifindex-based, but that three are init_net-only, thus will not
be affected.
Many thanks to David and Eric for the hash32_ptr implementation!
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
While investigating on network performance problems, I found this little
gem :
$ nm -v vmlinux | grep -1 dst_default_metrics
ffffffff82736540 b busy.46605
ffffffff82736560 B dst_default_metrics
ffffffff82736598 b dst_busy_list
Apparently, declaring a const array without initializer put it in
(writeable) bss section, in middle of possibly often dirtied cache
lines.
Since we really want dst_default_metrics be const to avoid any possible
false sharing and catch any buggy writes, I force a null initializer.
ffffffff818a4c20 R dst_default_metrics
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
1) Avoid dirtying neighbour's confirmed field.
TCP workloads hits this cache line for each incoming ACK.
Lets write n->confirmed only if there is a jiffie change.
2) Optimize neigh_hh_output() for the common Ethernet case, were
hh_len is less than 16 bytes. Replace the memcpy() call
by two inlined 64bit load/stores on x86_64.
Bench results using udpflood test, with -C option (MSG_CONFIRM flag
added to sendto(), to reproduce the n->confirmed dirtying on UDP)
24 threads doing 1.000.000 UDP sendto() on dummy device, 4 runs.
before : 2.247s, 2.235s, 2.247s, 2.318s
after : 1.884s, 1.905s, 1.891s, 1.895s
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Avoid two instructions to reload dev->nd_net->mib.ip_statistics pointer,
unsing a temp variable, in ip_rcv(), ip_output() paths for example.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
IPv6 needs a cookie in dst_check() call.
We need to add rx_dst_cookie and provide a family independent
sk_rx_dst_set(sk, skb) method to properly support IPv6 TCP early demux.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
We need to check the 'Role' parameter from the LE Connection
Complete Event in order to properly set 'out' and 'link_mode'
fields from hci_conn structure.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
|
