549705 Commits

Author SHA1 Message Date
Yuval Mintz
fe56b9e6a8 qed: Add module with basic common support
The Qlogic Everest Driver is the backend module for the QL4xxx ethernet
products by Qlogic.

This module serves two main purposes:
 1. It's responsible to contain all the common code that will be shared
    between the various drivers that would be used with said line of
    products. Flows such as chip initialization and de-initialization
    fall under this category.

 2. It would abstract the protocol-specific HW & FW components, allowing
    the protocol drivers to have a clean APIs which is detached in its
    slowpath configuration from the actual HSI.

This adds a very basic module without any protocol-specific bits.
I.e., this adds a basic implementation that almost entirely falls under
the first category.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-27 19:34:42 -07:00
emmanuel.grumbach@intel.com
8941faa161 net: tso: add support for IPv6
Adding IPv6 for the TSO helper API is trivial:
* Don't play with the id (which doesn't exist in IPv6)
* Correctly update the payload_len (don't include the
  length of the IP header itself)

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-26 22:24:22 -07:00
David S. Miller
61b9da925a This series includes code simplifaction. The main changes are the correct
xceiver handling (enable/disable) of the com20020 cards. The driver now handles
 link status change detection. The EAE PCI-ARCNET cards now make use of the
 rotary encoded subdevice indexing and got support for led triggers on transmit
 and reconnection events.
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Merge tag 'arcnet-for-4.4-rc1' of git://git.pengutronix.de/git/mgr/linux

Michael Grzeschik says:

====================
This series includes code simplifaction. The main changes are the correct
xceiver handling (enable/disable) of the com20020 cards. The driver now handles
link status change detection. The EAE PCI-ARCNET cards now make use of the
rotary encoded subdevice indexing and got support for led triggers on transmit
and reconnection events.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-26 22:16:02 -07:00
Bjørn Mork
4b3418fba0 ipv6: icmp: include addresses in debug messages
Messages like "icmp6_send: no reply to icmp error" are close
to useless. Adding source and destination addresses to provide
some more clue.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-26 21:59:42 -07:00
Alexei Starovoitov
1075ef5950 bpf: make tracing helpers gpl only
exported perf symbols are GPL only, mark eBPF helper functions
used in tracing as GPL only as well.

Suggested-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-26 21:53:34 -07:00
Alexei Starovoitov
62544ce8e0 bpf: fix bpf_perf_event_read() helper
Fix safety checks for bpf_perf_event_read():
- only non-inherited events can be added to perf_event_array map
  (do this check statically at map insertion time)
- dynamically check that event is local and !pmu->count
Otherwise buggy bpf program can cause kernel splat.

Also fix error path after perf_event_attrs()
and remove redundant 'extern'.

Fixes: 35578d798400 ("bpf: Implement function bpf_perf_event_read() that get the selected hardware PMU conuter")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-26 21:49:26 -07:00
Florian Fainelli
8b7c94e347 net: dsa: bcm_sf2: Unhardcode port numbers
While the current driver mostly supports BCM7445 which has a hardcoded
location for its MoCA port on port 7 and port 0 for its internal PHY,
this is not necessarily true for all other chips out there such as
BCM3390 for instance.

Walk the list of ports from Device Tree, get their port number ("reg"
property), and then parse the "phy-mode" property and initialize two
internal variables: moca_port and a bitmask of internal PHYs. Since we
use interrupts for the MoCA port, we introduce two helper functions to
enable/disable interrupts and do this at the appropriate bank (INTRL2_0
or INTRL2_1).

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-26 18:23:59 -07:00
Florian Fainelli
680060d3e0 net: dsa: bcm_sf2: Implement FDB operations
Add support for the FDB add, delete, and dump operations. The add and
delete operations are implemented using directed ARL operations using
the specified MAC address and consist in a read operation, write and
readback operation.

The dump operation consists in using the ARL search and software
filtering entries which are not for the desired port.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-26 18:14:02 -07:00
Kalle Valo
c0963772cb rtl8xxxu: fix unused rtl8192cu_fops compiler warning
kbuild reported:

rtl8xxxu.c:5786:32: warning: ‘rtl8192cu_fops’ defined but not used [-Wunused-variable]

Fix it by adding temporary ifdefs around the static functions.

Fixes: 033695bdf6d7 ("rtl8xxxu: move devices supported by rtlwifi under UNTESTED config")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-10-26 18:06:10 +02:00
Michael Grzeschik
59fbcbc61e arcnet: add netif_carrier_on/off for reconnect
The arcnet device has no interrupt to detect if the link has changed
from disconnected to connected. This patch adds an timer to toggle the
link detection. The timer will get retriggered as long as the
reconnection interrupts accure. If the recon interrupts hold off
for >1s we define the connection stable again.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
2015-10-26 09:10:56 +01:00
Michael Grzeschik
8890624a4e arcnet: com20020-pci: add led trigger support
The EAE PLX-PCI card has special leds on the the main io pci resource
bar. This patch adds support to trigger the conflict and data leds with
the packages.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
2015-10-26 09:10:56 +01:00
Michael Grzeschik
5ef216c1f8 arcnet: com20020-pci: add rotary index support
The EAE PLX-PCI card has a special rotary encoder
to configure the address of every card individually.
We take this information for the initial setup of
the cards dev_id.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
2015-10-26 09:10:56 +01:00
Michael Grzeschik
ae8ede6a0c arcnet: com20020-pci: set dev_port to the subdevice index
This patch sets the dev_port according to the index of
the card. This can be used by udev to name the ports
in userspace.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
2015-10-26 09:10:56 +01:00
Michael Grzeschik
27daf6ed5c arcnet: com20020: add enable and disable device on open/close
This patch changes the driver to properly work with the linux netif
interface. The controller gets enabled on open and disabled on close.
Therefor it removes every bogus start of the xceiver. It only gets
enabled on com20020_open and disabled on com20020_close.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
2015-10-26 09:10:56 +01:00
Michael Grzeschik
b82de0e28c arcnet: move dev_free_skb to its only user
The call for dev_free_skb is done only once. This patch
moves its call to its only user and removes the obsolete
condition variable.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
2015-10-26 09:10:56 +01:00
Michael Chan
d1611c3aba bnxt_en: Fix compile warnings when CONFIG_INET is not set.
bnxt_gro_skb() has unused variables when CONFIG_INET is not set.  We
really cannot support hardware GRO if CONFIG_INET is not set, so
compile out bnxt_gro_skb() completely and define BNXT_FLAG_GRO to be 0
if CONFIG_INET is not set.  This will effectively always disable
hardware GRO if CONFIG_INET is not set.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-25 22:36:15 -07:00
Jon Ringle
3ed770f603 net: encx24j600: Fix mask to update LED configuration
This fixes the mask used to update the LED configuration so that it clears
the necessary bits as well as setting the bits according to the mask.
Also reverse the LED configuration to show the Link state + collisions in
LEDA and the Link state + TX/RX events in LEDB.

Signed-off-by: Jon Ringle <jringle@gridpoint.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-25 18:23:45 -07:00
David S. Miller
da92bf99dd Merge branch 'mvneta-ethtool-stats'
Russell King says:

====================
mvneta ethtool statistics

Sorry for v3 - I forgot to update the commit message on patch 1 as
requested by Marcin.

This short series adds ethtool statistics reporting to mvneta.  Having
discussed with Andrew on IRC, we decided I'd pick up his patch into my
series.

My change for patch 1 compared to the previous RFC splits out the
reading of the statistics from the hardware into a separate function,
in order to facilitate work going on elsewhere to arrange for the
statistics to be preserved across a suspend/resume cycle.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-25 18:20:41 -07:00
Andrew Lunn
e483911f9f net: mvneta: Fix clearing of MIB statistics
The existing function to clear the MIB statatistics was using the
wrong address for the registers. Also, the counters would of been
cleared when the interface was brought up, not during the
probe. Fix both of these.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-25 18:20:35 -07:00
Russell King
9b0cdefa4c net: mvneta: add ethtool statistics
Add support for the ethtool statistic interface, returning the full set
of statistics which both Armada 370, 38x and Armada XP can support.

Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-25 18:20:33 -07:00
Eric Dumazet
1586a5877d af_unix: do not report POLLOUT on listeners
poll(POLLOUT) on a listener should not report fd is ready for
a write().

This would break some applications using poll() and pfd.events = -1,
as they would not block in poll()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Alan Burlison <Alan.Burlison@oracle.com>
Tested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-25 06:37:45 -07:00
Wu Fengguang
742e038330 tipc: link_is_bc_sndlink() can be static
TO: "David S. Miller" <davem@davemloft.net>
CC: netdev@vger.kernel.org
CC: Jon Maloy <jon.maloy@ericsson.com>
CC: Ying Xue <ying.xue@windriver.com>
CC: tipc-discussion@lists.sourceforge.net
CC: linux-kernel@vger.kernel.org

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-25 06:31:52 -07:00
Moshe Harel
2edb7a3372 iwlwifi: nvm: free old section data when reading nvm file
When reading external NVM file, if a section exists both in OTP
and in the external file, the memory that was allocated at OTP
reading is not freed.
This is possible only on systems that have an external NVM
file which is typically the case on embedded systems.

Signed-off-by: Moshe Harel <moshe.harel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:09 +02:00
Arik Nemtsov
06ecdba319 iwlwifi: mvm: disable TDLS ac queues correctly
The iwl_mvm_disable_queue function requires the TID to be set to
IWL_MAX_TID_COUNT when disabling an AC queue. Call it correctly for TDLS
scenarios.

Fixes: 4ecafae9e568 ("iwlwifi: mvm: support using multiple ACs on single HW queue")
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:08 +02:00
Eliad Peller
78ba82f777 iwlwifi: mvm: take scan ref only on success
In some cases, scan reference was taken, but wasn't
released even though scan command wasn't actually issued.

Change the current code to simply take the reference
only on success.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:08 +02:00
Johannes Berg
c8f423159e iwlwifi: mvm: remove pointless scan plan checks
As cfg80211 already enforces these limits, there's little point
in having them again here in our code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:07 +02:00
Johannes Berg
46eebec979 iwlwifi: mvm: clean up some whitespace in scan code
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:06 +02:00
Andrei Otcheretianski
effd19298c iwlwifi: mvm: Implement per vif frame registration API
Implement config_iface_filter() driver op. Currently support only
probe request registration for p2p client vifs, by setting
MAC_FILTER_IN_PROBE_REQUEST flag in MAC_CONTEXT_CMD.
This is needed since WFDS spec and certification require a P2P client
to be discoverable on its operating channel.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:06 +02:00
Eliad Peller
053225de12 iwlwifi: avoid read/write operations if the bus is dead
Recovery takes too much time if the bus is dead (each timeout
is 2000ms, etc.).
Explicitly skip fw dump in this case, as it will result in
garbage data (and might take signifcant time)

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:05 +02:00
Avraham Stern
cd55ccea59 iwlwifi: mvm: Add support for two scheduled scan plans
Add support for two scan plans for scheduled scan. The first plan
will run for a limited number of iterations, then the second plan
will run infinitely.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:05 +02:00
Luca Coelho
5888a40c50 iwlwifi: mvm: let any command flag be passed to iwl_mvm_flushtx_path()
Instead of only allowing the caller to decide whether the CMD_ASYNC
flag is set, let it pass the entire flags bitmask.  This allows more
flexibility and will be needed when we call this function in the
suspend flow (where other flags are needed).

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:04 +02:00
Assaf Krauss
c84af35de6 iwlwifi: mvm: Allow setting ctrl-chnl-position in FTM responder
This patch enables the debugfs user to configure an FTM responder
with the appropriate control channel position.

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:04 +02:00
Johannes Berg
b08dbed71a iwlwifi: mvm: use short timeouts in P2P low latency if supported
Those timeouts are used for AM-to-PSM transition.
We already have those pairs defined for default and WOWLAN use cases.
We expect that by using shorter threshold for low latency P2P,
e.g. for Miracast video scenario, we might save a considerable amount of power.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:03 +02:00
Johannes Berg
9645edb607 iwlwifi: mvm: use wowlan RX/TX timeouts in D0i3
In "hostless" mode (D3 or D0i3) the same parameters were intended
to be used, but the code doesn't do that properly. Fix it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:03 +02:00
Arik Nemtsov
78efc702c8 iwlwifi: mvm: correctly request DTS-measure for new cards
Since the 8000 series, the DTS measurement request command has been
changed. Use an ucode capability flag to determine which version is
supported and send the extended command when needed.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:02 +02:00
Emmanuel Grumbach
03a19cbb91 iwlwifi: pcie: fix (again) prepare card flow
The hardware bug in the commit mentioned below forces us
not to re-enable the clock gating in the Host Cluster.
The impact on the power consumption is minimal and it allows
the WAKE_ME interrupt to propagate.

CC: <stable@vger.kernel.org> [4.1+]
Fixes: c9fdec9f3970 ("iwlwifi: pcie: fix prepare card flow")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:01 +02:00
Matti Gottlieb
f0afea54ee iwlwifi: mvm: Dump FW's virtual image in the case of a NIC error
When paging is enabled the driver stores part of the FW's
image in the DRAM.

Dump FW's virtual image in the case of a NIC error.

Signed-off-by: Golan Ben-Ami <golan.ben.ami@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:01 +02:00
Alexander Bondar
e621c2282e iwlwifi: rs: Remove workaround that disables MIMO on P2P
Remove an old workaround that's no longer needed and
enable MIMO on P2P interfaces.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2015-10-25 13:45:00 +02:00
Emmanuel Grumbach
10d15322ed Merge remote-tracking branch 'mac80211-next/master' into next 2015-10-25 12:38:20 +02:00
David S. Miller
687f079add Merge branch 'tipc-next'
Jon Maloy says:

====================
tipc: improve broadcast implementation

The TIPC broadcast link implementation is currently complex and hard to
follow. It also incurs some amount of code and structure duplication,
something that can be reduced significantly with a little effort.

This commit series introduces a number of improvements which address
both the locking structure, the code/structure duplication issue, and
the overall readbility of the code.

The series consists of three main parts:

1-7: Adaptation to the new link structure, and preparation for the next
     step. In particular, we want the broadcast transmission link to
     have a life cycle that is longer than any of its potential (unicast
     and broadcast receive links) users. This eliminates the need to
     always test for the presence of this link before accessing it.

8-10: This is what is really new in this series. Commit #9 is by far
      the largest and most important one, because it moves most of
      the broadcast functionality into link.c, partially reusing the
      fields and functionality of the unicast link. The removal of
      the "node_map" infrastructure in commit #10 is also an important
      achievement.

11-16: Some improvements leveraging the changes made in the previous
       commits.

The series needs commit 53387c4e22ac ("tipc: extend broadcast link window size")
and commit e53567948f82 ("tipc: conditionally expand buffer headroom over udp tunnel")
which are both present in 'net' but not yet in 'net-next', to apply cleanly.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:54 -07:00
Jon Paul Maloy
2af5ae372a tipc: clean up unused code and structures
After the previous changes in this series, we can now remove some
unused code and structures, both in the broadcast, link aggregation
and link code.

There are no functional changes in this commit.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:47 -07:00
Jon Paul Maloy
c49a0a8439 tipc: ensure binding table initial distribution is sent via first link
Correct synchronization of the broadcast link at first contact between
two nodes is dependent on the assumption that the binding table "bulk"
update passes via the same link as the initial broadcast syncronization
message, i.e., via the first link that is established.

This is not guaranteed in the current implementation. If two link
come up very close to each other in time, the "bulk" may quite well
pass via the second link, and hence void the guarantee of a correct
initial synchronization before the broadcast link is opened.

This commit makes two small changes to strengthen this guarantee.

1) We let the second established link occupy slot 1 of the
   "active_links" array, while the first link will retain slot 0.
   (This is in reality a cosmetic change, we could just as well keep
    the current, opposite order)

2) We let the name distributor always use link selector/slot 0 when
   it sends it binding table updates.

The extra traffic bias on the first link caused by this change should
be negligible, since binding table updates constitutes a very small
fraction of the total traffic.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:46 -07:00
Jon Paul Maloy
c72fa872a2 tipc: eliminate link's reference to owner node
With the recent commit series, we have established a one-way dependency
between the link aggregation (struct tipc_node) instances and their
pertaining tipc_link instances. This has enabled quite significant code
and structure simplifications.

In this commit, we eliminate the field 'owner', which points to an
instance of struct tipc_node, from struct tipc_link, and replace it with
a pointer to struct net, which is the only external reference now needed
by a link instance.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:45 -07:00
Jon Paul Maloy
7214bcf875 tipc: eliminate redundant buffer cloning at transmission
Since all packet transmitters (link, bcast, discovery) are now sending
consumable buffer clones to the bearer layer, we can remove the
redundant buffer cloning that is perfomed in the lower level functions
tipc_l2_send_msg() and tipc_udp_send_msg().

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:44 -07:00
Jon Paul Maloy
60852d6795 tipc: let neighbor discoverer tranmsit consumable buffers
The neighbor discovery function currently uses the function
tipc_bearer_send() for transmitting packets, assuming that the
sent buffers are not consumed by the called function.

We want to change this, in order to avoid unnecessary buffer cloning
elswhere in the code.

This commit introduces a new function tipc_bearer_skb() which consumes
the sent buffers, and let the discoverer functions use this new call
instead. The discoverer does now itself perform the cloning when
that is necessary.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:44 -07:00
Jon Paul Maloy
959e1781aa tipc: introduce jumbo frame support for broadcast
Until now, we have only been supporting a fix MTU size of 1500 bytes
for all broadcast media, irrespective of their actual capability.

We now make the broadcast MTU adaptable to the carrying media, i.e.,
we use the smallest MTU supported by any of the interfaces attached
to TIPC.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:40 -07:00
Jon Paul Maloy
b06b281e79 tipc: simplify bearer level broadcast
Until now, we have been keeping track of the exact set of broadcast
destinations though the help structure tipc_node_map. This leads us to
have to maintain a whole infrastructure for supporting this, including
a pseudo-bearer and a number of functions to manipulate both the bearers
and the node map correctly. Apart from the complexity, this approach is
also limiting, as struct tipc_node_map only can support cluster local
broadcast if we want to avoid it becoming excessively large. We want to
eliminate this limitation, in order to enable introduction of scoped
multicast in the future.

A closer analysis reveals that it is unnecessary maintaining this "full
set" overview; it is sufficient to keep a counter per bearer, indicating
how many nodes can be reached via this bearer at the moment. The protocol
is now robust enough to handle transitional discrepancies between the
nominal number of reachable destinations, as expected by the broadcast
protocol itself, and the number which is actually reachable at the
moment. The initial broadcast synchronization, in conjunction with the
retransmission mechanism, ensures that all packets will eventually be
acknowledged by the correct set of destinations.

This commit introduces these changes.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:39 -07:00
Jon Paul Maloy
5266698661 tipc: let broadcast packet reception use new link receive function
The code path for receiving broadcast packets is currently distinct
from the unicast path. This leads to unnecessary code and data
duplication, something that can be avoided with some effort.

We now introduce separate per-peer tipc_link instances for handling
broadcast packet reception. Each receive link keeps a pointer to the
common, single, broadcast link instance, and can hence handle release
and retransmission of send buffers as if they belonged to the own
instance.

Furthermore, we let each unicast link instance keep a reference to both
the pertaining broadcast receive link, and to the common send link.
This makes it possible for the unicast links to easily access data for
broadcast link synchronization, as well as for carrying acknowledges for
received broadcast packets.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:37 -07:00
Jon Paul Maloy
fd556f209a tipc: introduce capability bit for broadcast synchronization
Until now, we have tried to support both the newer, dedicated broadcast
synchronization mechanism along with the older, less safe, RESET_MSG/
ACTIVATE_MSG based one. The latter method has turned out to be a hazard
in a highly dynamic cluster, so we find it safer to disable it completely
when we find that the former mechanism is supported by the peer node.

For this purpose, we now introduce a new capabability bit,
TIPC_BCAST_SYNCH, to inform any peer nodes that dedicated broadcast
syncronization is supported by the present node. The new bit is conveyed
between peers in the 'capabilities' field of neighbor discovery messages.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:35 -07:00
Jon Paul Maloy
2f56612457 tipc: let broadcast transmission use new link transmit function
This commit simplifies the broadcast link transmission function, by
leveraging previous changes to the link transmission function and the
broadcast transmission link life cycle.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-24 06:56:32 -07:00