Initialization now occurs in the calling thread of control,
rather than being deferred to the TIPC tasklet. With the
current codebase, the deferral is no longer necessary.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Streamlines the job of re-initializing TIPC's network topology service
when a node's network address is first assigned. Rather than destroying
the topology server port and breaking its connections to existing
subscribers, TIPC now simply lets the service continue running (since
the change to the port identifier of each port used by the topology
service no longer impacts the flow of messages between the service and
its subscribers).
This enhancement means that applications that utilize the topology
service prior to the assignment of TIPC's network address no longer need
to re-establish their subscriptions when the address is finally assigned.
However, it is worth noting that any subsequent events for existing
subscriptions report the new port identifier of the publishing port,
rather than the original port identifier. (For example, a name that was
previously reported as being published by <0.0.0:ref> may be subsequently
withdrawn by <Z.C.N:ref>.)
This doesn't impact any of the existing known userspace in tipc-utils,
since (a) TIPC continues to treat references to the original port ID
correctly and (b) normal use cases assign an address before active use.
However if there does happen to be some rare/custom application out
there that was relying on this, they can simply bypass the enhancement
by issuing a subscription to {0,0} and break its connection to the
topology service, if an associated withdrawal event occurs.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Termination no longer tests to see if the configuration service
port was successfully created or not. In the unlikely event that the
port was not created, attempting to delete the non-existent port is
detected gracefully and causes no harm.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Initialization now occurs in the calling thread of control,
rather than being deferred to the TIPC tasklet. With the
current codebase, the deferral is no longer necessary.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Streamlines the job of re-initializing TIPC's configuration service
when a node's network address is first assigned. Rather than destroying
the configuration server port and then recreating it, TIPC now simply
withdraws the existing {0,<0.0.0>} name publication and creates a new
{0,<Z.C.N>} name publication that identifies the node's network address
to interested subscribers.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Don't pick __u8/__u16 values directly from raw pointers, but instead use
an array of structures of code:value pairs. This is OK, since the buffer
we take options from is not an skb memory, but a user-to-kernel one.
For those options which don't require any value now, require this to be
zero (for potential future extension of this API).
v2: Changed tcp_repair_opt to use two __u32-s as spotted by David Laight.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The same macros is defined in 'include/net/af_ieee802154.h' and is called
IEEE802154_ADDR_LEN. No need another one, so remove it.
Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Separate frame allocation routine from data processing function.
This makes code more human readable and easier for understanding.
Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add missing spin_lock_init() for frames list lock.
Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Clean all the pending fragments and relative timers if 6lowpan link
is going to be deleted.
Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add nescesary mlme callbacks to satisfy "iz list" request from user space.
Due to 6lowpan device doesn't have its own phy, mlme implemented as a pipe
to a real phy to which 6lowpan is attached.
Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure net->ipvs is reset on netns cleanup or failed
initialization. It is needed for IPVS applications to know that
IPVS core is not loaded in netns.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Avoid crash when registering ip_vs_ftp after
the IPVS core initialization for netns fails. Do this by
checking for present core (net->ipvs).
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Highlights include:
- Fix NFSv4 infinite loops on open(O_TRUNC)
- Fix an Oops and an infinite loop in the NFSv4 flock code
- Don't register the PipeFS filesystem until it has been set up
- Fix an Oops in nfs_try_to_update_request
- Don't reuse NFSv4 open owners: fixes a bad sequence id storm.
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Merge tag 'nfs-for-3.4-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
- Fix NFSv4 infinite loops on open(O_TRUNC)
- Fix an Oops and an infinite loop in the NFSv4 flock code
- Don't register the PipeFS filesystem until it has been set up
- Fix an Oops in nfs_try_to_update_request
- Don't reuse NFSv4 open owners: fixes a bad sequence id storm.
* tag 'nfs-for-3.4-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv4: Keep dropped state owners on the LRU list for a while
NFSv4: Ensure that we don't drop a state owner more than once
NFSv4: Ensure we do not reuse open owner names
nfs: Enclose hostname in brackets when needed in nfs_do_root_mount
NFS: put open context on error in nfs_flush_multi
NFS: put open context on error in nfs_pagein_multi
NFSv4: Fix open(O_TRUNC) and ftruncate() error handling
NFSv4: Ensure that we check lock exclusive/shared type against open modes
NFSv4: Ensure that the LOCK code sets exception->inode
NFS: check for req==NULL in nfs_try_to_update_request cleanup
SUNRPC: register PipeFS file system after pernet sybsystem
read only, so change it to const.
Signed-off-by: Shan Wei <davidshan@tencent.com>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When we use netlink to monitor queue information for udp socket,
idiag_rqueue and idiag_wqueue of inet_diag_msg are returned with 0.
Keep consistent with netstat, just return back allocated rmem/wmem size.
Signed-off-by: Shan Wei <davidshan@tencent.com>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some kfree_skb() calls should be replaced by consume_skb() to avoid
drop_monitor/dropwatch false positives.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This adds code to trigger CEE events when an APP change or setall
command is made from user space. This simplifies user space code
significantly by creating a single interface to listen on that
works with both firmware and userland agents.
And if we end up with multiple agents this keeps every thing in
sync userland agents, firmware agents, and kernel notifier consumers.
For an example agent that listens for these events see:
https://github.com/jrfastab/cgdcbxd
cgdcbxd is a daemon used to monitor DCB netlink events and manage
the net_prio control group sub-system.
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Shmulik Ravid <shmulikr@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is needed to share code between the current server upcall mechanism
and the new gssproxy upcall mechanism introduced in a following patch.
Signed-off-by: Simo Sorce <simo@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
commit 14e405461e (2.6.39)
("Add __ip_vs_control_{init,cleanup}_sysctl()")
introduced regression due to wrong __net_init for
__ip_vs_control_cleanup_sysctl. This leads to crash when
the ip_vs module is unloaded.
Fix it by changing __net_init to __net_exit for
the function that is already renamed to ip_vs_control_net_cleanup_sysctl.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Hans Schillstrom <hans@schillstrom.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Adds hepler to clean sdata ieee80211_clean_sdata similar way as
ieee80211_setup_sdata is implemented. The function will be used by other
interfaces later.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Moving a STA to an AP VLAN prevents num_mcast_sta from being decremented
once the STA leaves, because sta->sdata changes. Fix this by checking
for AP VLANs as well.
Also exclude 4-addr VLAN stations from num_mcast_sta - remote 4-addr
stations ignore 3-address multicast frames anyway. In a typical bridge
configuration they receive the same packets as 4-address unicast.
This patch also fixes clearing the sdata->u.vlan.sta pointer when the
STA is removed from a 4-addr VLAN.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
It is only used to test for BSS multicast receivers.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Average beacon signal only keep tracked by managed interface,
give warning and return 0 for the others.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Command complete event for HCI_OP_USER_PASSKEY_NEG_REPLY would result
in calling handler function also for HCI_OP_LE_SET_SCAN_PARAM. This
could result in undefined behaviour.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Untie gcc's hands and let it do what it wants within the
individual source files. There are two files, node.c and
port.c -- only the latter effectively changes (gcc-4.5.2).
Objdump shows gcc deciding to not inline port_peernode().
Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Need to consume_skb() instead of kfree_skb() in netlink_dump() and
netlink_unicast_kernel() to avoid false dropwatch positives.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
netlink_destroy_callback() move to avoid forward reference
CodingStyle cleanups
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
bridge: set fake_rtable's dst to NULL to avoid kernel Oops
when bridge is deleted before tap/vif device's delete, kernel may
encounter an oops because of NULL reference to fake_rtable's dst.
Set fake_rtable's dst to NULL before sending packets out can solve
this problem.
v4 reformat, change br_drop_fake_rtable(skb) to {}
v3 enrich commit header
v2 introducing new flag DST_FAKE_RTABLE to dst_entry struct.
[ Use "do { } while (0)" for nop br_drop_fake_rtable()
implementation -DaveM ]
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Peter Huang <peter.huangpeng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This clarifies code intention, as suggested by David.
Suggested-by: David Miller <davem@davemloft.net>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix merge between commit 3adadc08cc ("net ax25: Reorder ax25_exit to
remove races") and commit 0ca7a4c87d ("net ax25: Simplify and
cleanup the ax25 sysctl handling")
The former moved around the sysctl register/unregister calls, the
later simply removed them.
With help from Stephen Rothwell.
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 35f3d14db (pipe: add support for shrinking and growing pipes)
added a slowdown for splice(socket -> pipe), as we might grow the spd
used in skb_splice_bits() for each skb we process in splice() syscall.
Its not needed since skb lengths are capped. The default on-stack arrays
are more than enough.
Use MAX_SKB_FRAGS instead of PIPE_DEF_BUFFERS to describe the reasonable
limit per skb.
Add coalescing support to help splicing of GRO skbs built from linear
skbs (linked into frag_list)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
commit c8628155ec (tcp: reduce out_of_order memory use) took care of
coalescing tcp segments provided by legacy devices (linear skbs)
We extend this idea to fragged skbs, as their truesize can be heavy.
ixgbe for example uses 256+1024+PAGE_SIZE/2 = 3328 bytes per segment.
Use this coalescing strategy for receive queue too.
This contributes to reduce number of tcp collapses, at minimal cost, and
reduces memory overhead and packets drops.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
While investigating TCP performance problems on 10Gb+ links, we found a
tcp sender was dropping lot of incoming ACKS because of sk_rcvbuf limit
in sk_add_backlog(), especially if receiver doesnt use GRO/LRO and sends
one ACK every two MSS segments.
A sender usually tweaks sk_sndbuf, but sk_rcvbuf stays at its default
value (87380), allowing a too small backlog.
A TCP ACK, even being small, can consume nearly same truesize space than
outgoing packets. Using sk_rcvbuf + sk_sndbuf as a limit makes sense and
is fast to compute.
Performance results on netperf, single flow, receiver with disabled
GRO/LRO : 7500 Mbits instead of 6050 Mbits, no more TCPBacklogDrop
increments at sender.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Cc: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sk_add_backlog() & sk_rcvqueues_full() hard coded sk_rcvbuf as the
memory limit. We need to make this limit a parameter for TCP use.
No functional change expected in this patch, all callers still using the
old sk_rcvbuf limit.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Cc: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Legacy rates are not validated while configuring
tx rateset using iw. So below cmd is accepted by nl80211.
sudo iw wlan2 set bitrates legacy-2.4 1 2 3
Validate legacy rates and return
error if any rate in the rateset is not valid.
Signed-off-by: Bala Shanmugam <bkamatch@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
ieee80211_ave_rssi need to be declare as export for driver to use it.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The original patch defined the correction margin but did not apply it.
Signed-off-by: Shinichi Hotori <hotorinn@gmail.com>
Signed-off-by: Yu Niiro <yu.niiro@gmail.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
According to IEEE 802.11 8.4.2.59, set the "STA channel width" bit to 0
if transmitting STA is using a 20mhz channel.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Blindly setting ht caps on a mesh peer's station entry would result in
MCS rates being used by the rate control algorithm even if no ht had
been configured. Fix this by checking the channel type before assigning
ht capabilites.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
To avoid passing supp_rates and basic_rates around all the time, just
derive these when needed in mesh_matches_local() and mesh_peer_init().
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch unifies the previous two paths toward mesh peer creation a
bit. It also fixes a bug where a peer's changing rates or HT mode
wouldn't register on leaving and then returning to the mesh with a sta
entry still present.
Also clean up locking and clear possibly stale ht cap.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
