Remove unnecessary debug logs and add some to more centralized places.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This patch takes into use the delayed initialization feature that the
Bluetooth UART framework provides.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This patch makes it possible to have UART drivers perform an internal
initialization before calling hci_register_dev. This allows moving a lot
of init code from user space (hciattach) to the kernel side, thereby
creating a more controlled/robust initialization process.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This patch cleans up and reduces indentation in the hci_uart_tty_close
function.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
These patches implement the final mechanism necessary to really allow
us to go without the route cache in ipv4.
We need a place to have long-term storage of PMTU/redirect information
which is independent of the routes themselves, yet does not get us
back into a situation where we have to write to metrics or anything
like that.
For this we use an "next-hop exception" table in the FIB nexthops.
The one thing I desperately want to avoid is having to create clone
routes in the FIB trie for this purpose, because that is very
expensive. However, I'm willing to entertain such an idea later
if this current scheme proves to have downsides that the FIB trie
variant would not have.
In order to accomodate this any such scheme, we need to be able to
produce a full flow key at PMTU/redirect time. That required an
adjustment of the interface call-sites used to propagate these events.
For a PMTU/redirect with a fully specified socket, we pass that socket
and use it to produce the flow key.
Otherwise we use a passed in SKB to formulate the key. There are two
cases that need to be distinguished, ICMP message processing (in which
case the IP header is at skb->data) and output packet processing
(mostly tunnels, and in all such cases the IP header is at ip_hdr(skb)).
We also have to make the code able to handle the case where the dst
itself passed into the dst_ops->{update_pmtu,redirect} method is
invalidated. This matters for calls from sockets that have cached
that route. We provide a inet{,6} helper function for this purpose,
and edit SCTP specially since it caches routes at the transport rather
than socket level.
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds basic support for parsing and sending Three-wire UART
Link Control packets.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This patch should complete the necessary code for sending reliable
Three-wire packets.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This patch adds convenience macros for reading Three-wire header values.
This will help make the code more readable.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This patch adds initial packed encoding and sending support to the
Three-wire UART HCI transport driver.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This patch adds basic packet parsing to the Three-wire UART HCI driver
for packets received from the controller.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This patch adds initial support for reliable packets along with the
necessary retransmission timer for the Three-wire UART HCI driver.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This patch adds basic state tracking and socket buffer handling to the
Three-wire UART (H5) HCI driver.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This patch adds the initial skeleton for Three-wire UART (H5) support
and hooks it up to the HCI UART framework.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
It's done in very similar way this is done in bonding and bridge.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
In a regime where we have subnetted route entries, we need a way to
store persistent storage about destination specific learned values
such as redirects and PMTU values.
This is implemented here via nexthop exceptions.
The initial implementation is a 2048 entry hash table with relaiming
starting at chain length 5. A more sophisticated scheme can be
devised if that proves necessary.
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
1) IPVS oops'ers:
a) Should not reset skb->nf_bridge in forwarding hook (Lin Ming)
b) 3.4 commit can cause ip_vs_control_cleanup to be invoked after
the ipvs_core_ops are unregistered during rmmod (Julian ANastasov)
2) ixgbevf bringup failure can crash in TX descriptor cleanup
(Alexander Duyck)
3) AX25 switch missing break statement hoses ROSE sockets (Alan Cox)
4) CAIF accesses freed per-net memory (Sjur Brandeland)
5) Network cgroup code has out-or-bounds accesses (Eric DUmazet), and
accesses freed memory (Gao Feng)
6) Fix a crash in SCTP reported by Dave Jones caused by freeing an
association still on a list (Neil HOrman)
7) __netdev_alloc_skb() regresses on GFP_DMA using drivers because that
GFP flag is not being retained for the allocation (Eric Dumazet).
8) Missing NULL hceck in sch_sfb netlink message parsing (Alan Cox)
9) bnx2 crashes because TX index iteration is not bounded correctly
(Michael Chan)
10) IPoIB generates warnings in TCP queue collapsing (via
skb_try_coalesce) because it does not set skb->truesize correctly
(Eric Dumazet)
11) vlan_info objects leak for the implicit vlan with ID 0 (Amir
Hanania)
12) A fix for TX time stamp handling in gianfar does not transfer socket
ownership from one packet to another correctly, resulting in a
socket write space imbalance (Eric Dumazet)
13) Julia Lawall found several cases where we do a list iteration, and
then at the loop termination unconditionally assume we ended up with
real list object, rather than the list head itself (CNIC, RXRPC,
mISDN).
14) The bonding driver handles procfs moving incorrectly when a device
it manages is moved from one namespace to another (Eric Biederman)
15) Missing memory barriers in stmmac descriptor accesses result in
various crashes (Deepak Sikri)
16) Fix handling of broadcast packets in batman-adv (Simon Wunderlich)
17) Properly check the sanity of sendmsg() lengths in ieee802154's
dgram_sendmsg(). Dave Jones and others have hit and reported this
bug (Sasha Levin)
18) Some drivers (b44 and b43legacy) on 64-bit machines stopped working
because of how netdev_alloc_skb() was adjusted. Such drivers should
now use alloc_skb() for obtaining bounce buffers. (Eric Dumazet)
19) atl1c mis-managed it's link state in that it stops the queue by hand
on link down. The generic networking takes care of that and this
double stop locks the queue down. So simply removing the driver's
queue stop call fixes the problem (Cloud Ren)
20) Fix out-of-memory due to mis-accounting in net_em packet scheduler
(Eric Dumazet)
21) If DCB and SR-IOV are configured at the same time in IXGBE the chip
will hang because this is not supported (Alexander Duyck)
22) A commit to stop drivers using netdev->base_addr broke the CNIC
driver (Michael Chan)
23) Timeout regression in ipset caused by an attempt to fix an overflow
bug (Jozsef Kadlecsik).
24) mac80211 minstrel code allocates memory using incorrect size
(Thomas Huehn)
25) llcp_sock_getname() needs to check for a NULL device otherwise we
OOPS (Sasha Levin)
26) mwifiex leaks memory (Bing Zhao)
27) Propagate iwlwifi fix to iwlegacy, even when we're not associated
we need to monitor for stuck queues in the watchdog handler
(Stanislaw Geuszka)
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
ipvs: fix oops in ip_vs_dst_event on rmmod
ipvs: fix oops on NAT reply in br_nf context
ixgbevf: Fix panic when loading driver
ax25: Fix missing break
MAINTAINERS: reflect actual changes in IEEE 802.15.4 maintainership
caif: Fix access to freed pernet memory
net: cgroup: fix access the unallocated memory in netprio cgroup
ixgbevf: Prevent RX/TX statistics getting reset to zero
sctp: Fix list corruption resulting from freeing an association on a list
net: respect GFP_DMA in __netdev_alloc_skb()
e1000e: fix test for PHY being accessible on 82577/8/9 and I217
e1000e: Correct link check logic for 82571 serdes
sch_sfb: Fix missing NULL check
bnx2: Fix bug in bnx2_free_tx_skbs().
IPoIB: fix skb truesize underestimatiom
net: Fix memory leak - vlan_info struct
gianfar: fix potential sk_wmem_alloc imbalance
drivers/net/ethernet/broadcom/cnic.c: remove invalid reference to list iterator variable
net/rxrpc/ar-peer.c: remove invalid reference to list iterator variable
drivers/isdn/mISDN/stack.c: remove invalid reference to list iterator variable
...
eliminates the dependency on arbitrary initialization orders.
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Merge tag 'single-rpmsg-3.5-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/rpmsg
Pull rpmsg fix from Ohad Ben-Cohen:
"A single rpmsg fix for 3.5, coming from Federico Fuga, which
eliminates the dependency on arbitrary initialization orders."
* tag 'single-rpmsg-3.5-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/rpmsg:
rpmsg: fix dependency on initialization order
Pull CMA and DMA-mapping fixes from Marek Szyprowski:
"Another set of minor fixups for recently merged Contiguous Memory
Allocator and ARM DMA-mapping changes. Those patches fix mysterious
crashes on systems with CMA and Himem enabled as well as some corner
cases caused by typical off-by-one bug."
* 'fixes-for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
ARM: dma-mapping: modify condition check while freeing pages
mm: cma: fix condition check when setting global cma area
mm: cma: don't replace lowmem pages with highmem
Some interface statistics are computed in such a way that they can
sometimes decrease (and even underflow). Since the computed value
will never be greater than the true value, we fix this by only storing
the computed value when it increases.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Currently VF queues and drivers may remain active during this test.
This could cause memory corruption or spurious test failures.
Therefore we reset the port/function before running these tests on
Siena.
On Falcon this doesn't work: we have to do some additional
initialisation before some blocks will work again. So refactor the
reset/register-test sequence into an efx_nic_type method so
efx_selftest() doesn't have to consider such quirks.
In the process, fix another minor bug: Siena does not have an
'invisible' reset and the self-test currently fails to push the PHY
configuration after resetting. Passing RESET_TYPE_ALL to
efx_reset_{down,up}() fixes this.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Fix CID 113952 in Coverity report on Linux.
This is the one instance where we don't, and shouldn't, check the
return code from efx_mcdi_rpc(). It wasn't immediately obvious to me
why we didn't, so I think an explanation is in order.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Fix CID 102619 in the Coverity report on Linux.
efx_end_loopback() iterates over an array of skb pointers of which
some may be null (if efx_begin_loopback() failed). It should not use
dev_kfree_skb_irq(), which requires non-null pointers. In practice
this is safe because it does not run in interrupt context and
therefore always ends up calling dev_kfree_skb(), which does allow
null pointers. But we should make that explicit.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Fix CID 113703 in the Coverity report on Linux.
ethtool stats names are limited to 32 bytes including a null
terminator. Use strlcpy() to ensure that we will always include the
null terminator even if a source string becomes longer than this.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
There is nothing in the VLAN driver or core VLAN support that
invalidates the TCP and IP header offsets.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
tso_state::packet_space is always set in tso_start_packet(); the
value set in tso_start() is not used, and is also incorrect.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
With some gcc versions & optimisations, the compiler will warn that
'depth' in efx_filter_insert_filter() may be used without being
initialised, although this is not the case.
This is related to inlining of efx_filter_search(), which only has
one caller since commit 8db182f4a8
('sfc: Remove now-unused filter function').
Shut the compiler up by initialising it to 0.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Implement the RFC 5691 mitigation against Blind
Reset attack using SYN bit.
Section 4.2 of RFC 5961 advises to send a Challenge ACK and drop
incoming packet, instead of resetting the session.
Add a new SNMP counter to count number of challenge acks sent
in response to SYN packets.
(netstat -s | grep TCPSYNChallenge)
Remove obsolete TCPAbortOnSyn, since we no longer abort a TCP session
because of a SYN flag.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Kiran Kumar Kella <kkiran@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This will be used so that we can compose a full flow key.
Even though we have a route in this context, we need more. In the
future the routes will be without destination address, source address,
etc. keying. One ipv4 route will cover entire subnets, etc.
In this environment we have to have a way to possess persistent storage
for redirects and PMTU information. This persistent storage will exist
in the FIB tables, and that's why we'll need to be able to rebuild a
full lookup flow key here. Using that flow key will do a fib_lookup()
and create/update the persistent entry.
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
I know that we're in fairly late stage to request pulls, but the IPVS people
pinged me with little patches with oops fixes last week.
One of them was recently introduced (during the 3.4 development cycle) while
cleaning up the IPVS netns support. They are:
* Fix one regression introduced in 3.4 while cleaning up the
netns support for IPVS, from Julian Anastasov.
* Fix one oops triggered due to resetting the conntrack attached to the skb
instead of just putting it in the forward hook, from Lin Ming. This problem
seems to be there since 2.6.37 according to Simon Horman.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
on disassoc, ieee80211_set_disassoc() goes out of PS
before indicating BSS_CHANGED_ASSOC (not sure why this
is needed, but some drivers might count on the current
behavior).
However, it does it after sending the disassoc
frame, which results in null-data frame being sent
(in order to go out of ps) after we were already sent
the disassoc, which is invalid.
Fix it by going out of ps before sending the disassoc.
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
regulatory_update() just calls wiphy_update_regulatory().
wiphy_update_regulatory() assumes you already have
the reg_mutex held so just move the call within locking
context and kill the superfluous regulatory_update().
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Now that we have wiphy_regulatory_register() we can
tuck away the core's regulatory_update() call there
and make it static.
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This makes it clearer what we're doing. This now makes a bit
more sense given that regardless of the wiphy if the cell
base station hint feature is supported we will be modifying the
way the regulatory core behaves.
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cellular base stations can provide hints to cfg80211 about
where they think we are. This can be done for example on
a cell phone. To enable these hints we simply allow them
through as user regulatory hints but we allow userspace
to clasify the hint as either coming directly from the
user or coming from a cellular base station. This option
is only available when you enable
CONFIG_CFG80211_CERTIFICATION_ONUS.
The base station hints themselves will not be processed
by the core unless at least one device on the system
supports this feature.
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This adds CONFIG_CFG80211_CERTIFICATION_ONUS which is to
be used for features / code which require a bit of work on
the system integrator's part to ensure that the system will
still pass 802.11 regulatory certification. This option is
also usable for researchers and experimenters looking to add
code in the kernel without impacting compliant code.
We'd use CONFIG_EXPERT alone but it seems that most standard
Linux distributions are enabling CONFIG_EXPERT already. This
allows us to define 802.11 specific kernel features under a
flag that is intended by design to be disabled by standard
Linux distributions, and only enabled by system integrators
or distributions that have done work to ensure regulatory
certification on the system with the enabled features.
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When rpmsg drivers are built into the kernel, they must not initialize
before the rpmsg bus does, otherwise they'd trigger a BUG() in
drivers/base/driver.c line 169 (driver_register()).
To fix that, and to stop depending on arbitrary linkage ordering of
those built-in rpmsg drivers, we make the rpmsg bus initialize at
subsys_initcall.
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Federico Fuga <fuga@studiofuga.com>
[ohad: rewrite the commit log]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
The interrupt registers accessed in ixgbevf are more similar to the igb
style registers than they are to the ixgbe style registers. As such we
would be better off setting up the code for the EICS, EIMS, EICS, EIAM, and
EIAC like we do in igb instead of ixgbe.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Currently the VF driver is processing all of the transmits in interrupt
context. This can be messy since the Rx is all handled in NAPI and this
may result in interrupts being disabled. In order to resolve this move all
of the Tx packet processing into NAPI and combine all of the interrupt and
polling routines into just a pair of functions.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
For most cases the ixgbevf driver will only ever contain a single Tx and
single Rx queue. In order to track that it makes more sense to use a
pointer instead of using a bitmap which must be search in order to locate
the ring on an adapter index. As such I am changing the code to use
pointers and an iterator to access all rings on a given q_vector.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
After commit 39f618b4fd (3.4)
"ipvs: reset ipvs pointer in netns" we can oops in
ip_vs_dst_event on rmmod ip_vs because ip_vs_control_cleanup
is called after the ipvs_core_ops subsys is unregistered and
net->ipvs is NULL. Fix it by exiting early from ip_vs_dst_event
if ipvs is NULL. It is safe because all services and dests
for the net are already freed.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
While adding regulatory support to ath6kl I noticed that I easily
got the regulatory code confused. The way to reproduce the bug was:
1. iw reg set FI (in userspace)
2. cfg80211 calls ath6kl_reg_notify(FI)
3. ath6kl sets regdomain in firmware
4. firmware sends regdomain event to notify about the new regdomain (FI)
5. ath6kl calls regulatory_hint(FI)
And this (from FI to FI transition) confuses cfg80211 and after that I
only get "Pending regulatory request, waiting for it to be
processed...." messages and regdomain changes won't work anymore.
The reason why ath6kl calls regulatory_hint() is that firmware can change
the regulatory domain by it's own, for example due to 11d IEs. I could
of course workaround this in ath6kl but I think it's better to handle
the case in cfg80211.
The fix is pretty simple, use a different error code if the regdomain is
same and then just set the request processed so that it doesn't block new
requests.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Let the user configure serveral TX error conection quality monitoring
parameters: % error rate, survey interval, and # of attempted packets.
On exceeding the TX failure rate over the given interval, the driver
will send a CQM notify event with the actual TX failure rate and
packets attempted.
Signed-off-by: Thomas Pedersen <c_tpeder@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This patch addresses a kernel panic seen when setting up the interface.
Specifically we see a NULL pointer dereference on the Tx descriptor cleanup
path when enabling interrupts. This change corrects that so it cannot
occur.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In one of my previous patches I erroneously
used nla_put_u32 for the wdev_id, fix that
to use nla_put_u64.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This change cleans up the accounting needed at the start of xmit_frame so
that we can avoid doing too much work to determine how many descriptors we
will need.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This patch drops the use of eitr_low and eitr_high as values being stored
in the adapter structure. Since the values have no external way to be
changed they might as well just be hard coded values and save us the space
on the adapter structure.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Johan Hedberg