GitHub/LineageOS/android_kernel_motorola_exynos9610.git
8 years agobpf, perf: delay release of BPF prog after grace period
Daniel Borkmann [Mon, 27 Jun 2016 19:38:11 +0000 (21:38 +0200)]
bpf, perf: delay release of BPF prog after grace period

Commit dead9f29ddcc ("perf: Fix race in BPF program unregister") moved
destruction of BPF program from free_event_rcu() callback to __free_event(),
which is problematic if used with tail calls: if prog A is attached as
trace event directly, but at the same time present in a tail call map used
by another trace event program elsewhere, then we need to delay destruction
via RCU grace period since it can still be in use by the program doing the
tail call (the prog first needs to be dropped from the tail call map, then
trace event with prog A attached destroyed, so we get immediate destruction).

Fixes: dead9f29ddcc ("perf: Fix race in BPF program unregister")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Jann Horn <jann@thejh.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: bridge: fix vlan stats continue counter
Nikolay Aleksandrov [Mon, 27 Jun 2016 16:34:42 +0000 (18:34 +0200)]
net: bridge: fix vlan stats continue counter

I made a dumb off-by-one mistake when I added the vlan stats counter
dumping code. The increment should happen before the check, not after
otherwise we miss one entry when we continue dumping.

Fixes: a60c090361ea ("bridge: netlink: export per-vlan stats")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotcp: do not send too big packets at retransmit time
Eric Dumazet [Mon, 27 Jun 2016 15:38:50 +0000 (17:38 +0200)]
tcp: do not send too big packets at retransmit time

Arjun reported a bug in TCP stack and bisected it to a recent commit.

In case where we process SACK, we can coalesce multiple skbs
into fat ones (tcp_shift_skb_data()), to lower write queue
overhead, because we do not expect to retransmit these packets.

However, SACK reneging can happen, forcing the sender to retransmit
all these packets. If skb->len is above 64KB, we then send buggy
IP packets that could hang TSO engine on cxgb4.

Neal suggested to use tcp_tso_autosize() instead of tp->gso_segs
so that we cook packets of optimal size vs TCP/pacing.

Thanks to Arjun for reporting the bug and running the tests !

Fixes: 10d3be569243 ("tcp-tso: do not split TSO packets at retransmit time")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Arjun V <arjun@chelsio.com>
Tested-by: Arjun V <arjun@chelsio.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoibmvnic: fix to use list_for_each_safe() when delete items
Wei Yongjun [Mon, 27 Jun 2016 12:48:53 +0000 (20:48 +0800)]
ibmvnic: fix to use list_for_each_safe() when delete items

Since we will remove items off the list using list_del() we need
to use a safe version of the list_for_each() macro aptly named
list_for_each_safe().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'thunderx-fixes'
David S. Miller [Wed, 29 Jun 2016 09:14:19 +0000 (05:14 -0400)]
Merge branch 'thunderx-fixes'

Sunil Goutham says:

====================
net: thunderx: Miscellaneous fixes

This 2 patch series fixes issues w.r.t physical link status
reporting and transmit datapath configuration for
secondary qsets.

Changes from v1:
Fixed lmac disable sequence for interfaces of type SGMII.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: thunderx: Fix TL4 configuration for secondary Qsets
Sunil Goutham [Mon, 27 Jun 2016 10:00:03 +0000 (15:30 +0530)]
net: thunderx: Fix TL4 configuration for secondary Qsets

TL4 calculation for a given SQ of secondary Qsets is incorrect
and goes out of bounds and also for some SQ's TL4 chosen will
transmit data via a different BGX interface and not same as
primary Qset's interface.

This patch fixes this issue.

Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: thunderx: Fix link status reporting
Sunil Goutham [Mon, 27 Jun 2016 10:00:02 +0000 (15:30 +0530)]
net: thunderx: Fix link status reporting

Check for SMU RX local/remote faults along with SPU LINK
status. Otherwise at times link is UP at our end but DOWN
at link partner's side. Also due to an issue in BGX it's
rarely seen that initialization doesn't happen properly
and SMU RX reports faults with everything fine at SPU.
This patch tries to reinitialize LMAC to fix it.

Also fixed LMAC disable sequence to properly bring down link.

Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: Tao Wang <tao.wang@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'mlx5-100G-fixes'
David S. Miller [Wed, 29 Jun 2016 08:28:59 +0000 (04:28 -0400)]
Merge branch 'mlx5-100G-fixes'

Saeed Mahameed says:

====================
Mellanox 100G mlx5 fixes#2 for 4.7-rc

The following series provides one-liners fixes for mlx5 driver plus one
medium patch to reorganize ethtool counters reporting.

Highlights:
- Added MODIFY_FLOW_TABLE to command strings table
- Add ConnectX-5 PCIe 4.0 to list of supported devices
- Rename ASYNC_EVENTS enum
- Enable BlueFlame only when supported by device
- Avoid adding same vxlan port twice
- Report the correct number of PFC counters
- Reorganize ethtool reported counters and remove duplications
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Reorganize ethtool statistics
Gal Pressman [Mon, 27 Jun 2016 09:08:38 +0000 (12:08 +0300)]
net/mlx5e: Reorganize ethtool statistics

Categorize and reorganize ethtool statistics counters by renaming to
"rx_*" and "tx_*" and removing redundant and duplicated counters, this
way they are easier to grasp and more user friendly.

Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Fix number of PFC counters reported to ethtool
Gal Pressman [Mon, 27 Jun 2016 09:08:37 +0000 (12:08 +0300)]
net/mlx5e: Fix number of PFC counters reported to ethtool

Number of PFC counters used to count only number of priorities with PFC
enabled, but each priority has more than one counter, hence the need to
multiply it by the number of PFC counters per priority.

Fixes: cf678570d5a1 ('net/mlx5e: Add per priority group to PPort counters')
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Prevent adding the same vxlan port
Matthew Finlay [Mon, 27 Jun 2016 09:08:36 +0000 (12:08 +0300)]
net/mlx5e: Prevent adding the same vxlan port

Do not allow the same vxlan udp port to be added to the device more than
once.

Fixes: b3f63c3d5e2c ("net/mlx5e: Add netdev support for VXLAN tunneling")
Signed-off-by: Matthew Finlay <matt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Check for BlueFlame capability before allocating SQ uar
Gal Pressman [Mon, 27 Jun 2016 09:08:35 +0000 (12:08 +0300)]
net/mlx5e: Check for BlueFlame capability before allocating SQ uar

Previous to this patch mapping was always set to write combining without
checking whether BlueFlame is supported in the device.

Fixes: 0ba422410bbf ('net/mlx5: Fix global UAR mapping')
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5e: Change enum to better reflect usage
Eli Cohen [Mon, 27 Jun 2016 09:08:34 +0000 (12:08 +0300)]
net/mlx5e: Change enum to better reflect usage

Change MLX5E_STATE_ASYNC_EVENTS_ENABLE to
MLX5E_STATE_ASYNC_EVENTS_ENABLED since it represent a state and not an
operation.

Fixes: acff797cd1874 ('net/mlx5: Extend mlx5_core to support ConnectX-4 Ethernet functionality')
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5: Add ConnectX-5 PCIe 4.0 to list of supported devices
Majd Dibbiny [Mon, 27 Jun 2016 09:08:33 +0000 (12:08 +0300)]
net/mlx5: Add ConnectX-5 PCIe 4.0 to list of supported devices

Add the upcoming ConnectX-5 PCIe 4.0 device to the list of
supported devices by the mlx5 driver.

Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5: Update command strings
Eli Cohen [Mon, 27 Jun 2016 09:08:32 +0000 (12:08 +0300)]
net/mlx5: Update command strings

Add command string for MODIFY_FLOW_TABLE which is used by the driver.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: marvell: Add separate config ANEG function for Marvell 88E1111
Harini Katakam [Mon, 27 Jun 2016 07:39:59 +0000 (13:09 +0530)]
net: marvell: Add separate config ANEG function for Marvell 88E1111

Marvell 88E1111 currently uses the generic marvell config ANEG function.
This function has a sequence accessing Page 5 and Register 31,
both of which are not defined or reserved for this PHY.
Hence this patch adds a new config ANEG function for Marvell 88E1111
without these erroneous accesses.

Signed-off-by: Harini Katakam <harinik@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'batman-adv-fixes'
David S. Miller [Wed, 29 Jun 2016 08:01:53 +0000 (04:01 -0400)]
Merge branch 'batman-adv-fixes'

Sven Eckelmann says:

====================
batman-adv: Fixes for Linux 4.7

Antonio currently seems to be occupied. This is currently rather unfortunate
because there are patches waiting in the batman-adv development repository
maint(enance) branch [1] since up to 6 weeks. I am now getting asked when
these patches will hit the distribution kernels and therefore decided to
submit these patches directly to netdev.

The patch from Simon works around the problem that warnings could be triggered
in the translation table code via packets using a VLAN not configured on the
target host. This warning was replaced with a rate limited info message.

Ben Hutchings found an superfluous batadv_softif_vlan_put in the error
handling code of the translation table while he backported the "batman-adv:
Fix reference counting of vlan object for tt_local_entry" patch to the stable
kernels. He noticed correctly that this batadv_softif_vlan_put should also
have been removed by the said patch.

The most requested fix at the moment is related to a double free in the
translation table code. It is a race condition which mostly happens on systems
with multiple cores and multiple network interface attached to batman-adv. Two
Freifunk communities which were haunted by weird crashes (with backtraces
reporting problems in other parts of the kernel) were kind enough to test this
patch. They reported that there systems are now running stable after applying
this patch.

An invalid memory access was detected in the batadv_icmp_packet_rr handling
code when receiving a skbuff with fragments. The last patch is fixing a memory
leak when the interface is removed via .dellink. The code to fix it was copied
from the code handling the legacy sysfs interface to remove netdevices from a
batman-adv netdevice.

There are still 28 patches in the development tree for v4.8 but I will leave
them to Antonio because these are cleanups and features and therefore for net-
next.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobatman-adv: Clean up untagged vlan when destroying via rtnl-link
Sven Eckelmann [Sun, 26 Jun 2016 09:16:13 +0000 (11:16 +0200)]
batman-adv: Clean up untagged vlan when destroying via rtnl-link

The untagged vlan object is only destroyed when the interface is removed
via the legacy sysfs interface. But it also has to be destroyed when the
standard rtnl-link interface is used.

Fixes: 5d2c05b21337 ("batman-adv: add per VLAN interface attribute framework")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobatman-adv: Fix ICMP RR ethernet access after skb_linearize
Sven Eckelmann [Sun, 26 Jun 2016 09:16:12 +0000 (11:16 +0200)]
batman-adv: Fix ICMP RR ethernet access after skb_linearize

The skb_linearize may reallocate the skb. This makes the calculated pointer
for ethhdr invalid. But it the pointer is used later to fill in the RR
field of the batadv_icmp_packet_rr packet.

Instead re-evaluate eth_hdr after the skb_linearize+skb_cow to fix the
pointer and avoid the invalid read.

Fixes: da6b8c20a5b8 ("batman-adv: generalize batman-adv icmp packet handling")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobatman-adv: Fix double-put of vlan object
Ben Hutchings [Sun, 26 Jun 2016 09:16:11 +0000 (11:16 +0200)]
batman-adv: Fix double-put of vlan object

Each batadv_tt_local_entry hold a single reference to a
batadv_softif_vlan.  In case a new entry cannot be added to the hash
table, the error path puts the reference, but the reference will also
now be dropped by batadv_tt_local_entry_release().

Fixes: a33d970d0b54 ("batman-adv: Fix reference counting of vlan object for tt_local_entry")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobatman-adv: Fix use-after-free/double-free of tt_req_node
Sven Eckelmann [Sun, 26 Jun 2016 09:16:10 +0000 (11:16 +0200)]
batman-adv: Fix use-after-free/double-free of tt_req_node

The tt_req_node is added and removed from a list inside a spinlock. But the
locking is sometimes removed even when the object is still referenced and
will be used later via this reference. For example batadv_send_tt_request
can create a new tt_req_node (including add to a list) and later
re-acquires the lock to remove it from the list and to free it. But at this
time another context could have already removed this tt_req_node from the
list and freed it.

CPU#0

    batadv_batman_skb_recv from net_device 0
    -> batadv_iv_ogm_receive
      -> batadv_iv_ogm_process
        -> batadv_iv_ogm_process_per_outif
          -> batadv_tvlv_ogm_receive
            -> batadv_tvlv_ogm_receive
              -> batadv_tvlv_containers_process
                -> batadv_tvlv_call_handler
                  -> batadv_tt_tvlv_ogm_handler_v1
                    -> batadv_tt_update_orig
                      -> batadv_send_tt_request
                        -> batadv_tt_req_node_new
                           spin_lock(...)
                           allocates new tt_req_node and adds it to list
                           spin_unlock(...)
                           return tt_req_node

CPU#1

    batadv_batman_skb_recv from net_device 1
    -> batadv_recv_unicast_tvlv
      -> batadv_tvlv_containers_process
        -> batadv_tvlv_call_handler
          -> batadv_tt_tvlv_unicast_handler_v1
            -> batadv_handle_tt_response
               spin_lock(...)
               tt_req_node gets removed from list and is freed
               spin_unlock(...)

CPU#0

                      <- returned to batadv_send_tt_request
                         spin_lock(...)
                         tt_req_node gets removed from list and is freed
                         MEMORY CORRUPTION/SEGFAULT/...
                         spin_unlock(...)

This can only be solved via reference counting to allow multiple contexts
to handle the list manipulation while making sure that only the last
context holding a reference will free the object.

Fixes: a73105b8d4c7 ("batman-adv: improved client announcement mechanism")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Tested-by: Martin Weinelt <martin@darmstadt.freifunk.net>
Tested-by: Amadeus Alfa <amadeus@chemnitz.freifunk.net>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobatman-adv: replace WARN with rate limited output on non-existing VLAN
Simon Wunderlich [Sun, 26 Jun 2016 09:16:09 +0000 (11:16 +0200)]
batman-adv: replace WARN with rate limited output on non-existing VLAN

If a VLAN tagged frame is received and the corresponding VLAN is not
configured on the soft interface, it will splat a WARN on every packet
received. This is a quite annoying behaviour for some scenarios, e.g. if
bat0 is bridged with eth0, and there are arbitrary VLAN tagged frames
from Ethernet coming in without having any VLAN configuration on bat0.

The code should probably create vlan objects on the fly and
transparently transport these VLAN-tagged Ethernet frames, but until
this is done, at least the WARN splat should be replaced by a rate
limited output.

Fixes: 354136bcc3c4 ("batman-adv: fix kernel crash due to missing NULL checks")
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: phy: Manage fixed PHY address space using IDA
Florian Fainelli [Fri, 24 Jun 2016 23:25:24 +0000 (16:25 -0700)]
net: phy: Manage fixed PHY address space using IDA

If we have a system which uses fixed PHY devices and calls
fixed_phy_register() then fixed_phy_unregister() we can exhaust the
number of fixed PHYs available after a while, since we keep incrementing
the variable phy_fixed_addr, but we never decrement it.

This patch fixes that by converting the fixed PHY allocation to using
IDA, which takes care of the allocation/dealloaction of the PHY
addresses for us.

Fixes: a75951217472 ("net: phy: extend fixed driver with fixed_phy_register()")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosock_diag: do not broadcast raw socket destruction
Willem de Bruijn [Fri, 24 Jun 2016 20:02:35 +0000 (16:02 -0400)]
sock_diag: do not broadcast raw socket destruction

Diag intends to broadcast tcp_sk and udp_sk socket destruction.
Testing sk->sk_protocol for IPPROTO_TCP/IPPROTO_UDP alone is not
sufficient for this. Raw sockets can have the same type.

Add a test for sk->sk_type.

Fixes: eb4cb008529c ("sock_diag: define destruction multicast groups")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoconnector: fix out-of-order cn_proc netlink message delivery
Aaron Campbell [Fri, 24 Jun 2016 13:05:32 +0000 (10:05 -0300)]
connector: fix out-of-order cn_proc netlink message delivery

The proc connector messages include a sequence number, allowing userspace
programs to detect lost messages.  However, performing this detection is
currently more difficult than necessary, since netlink messages can be
delivered to the application out-of-order.  To fix this, leave pre-emption
disabled during cn_netlink_send(), and use GFP_NOWAIT.

The following was written as a test case.  Building the kernel w/ make -j32
proved a reliable way to generate out-of-order cn_proc messages.

int
main(int argc, char *argv[])
{
static uint32_t last_seq[CPU_SETSIZE], seq;
int cpu, fd;
struct sockaddr_nl sa;
struct __attribute__((aligned(NLMSG_ALIGNTO))) {
struct nlmsghdr nl_hdr;
struct __attribute__((__packed__)) {
struct cn_msg cn_msg;
struct proc_event cn_proc;
};
} rmsg;
struct __attribute__((aligned(NLMSG_ALIGNTO))) {
struct nlmsghdr nl_hdr;
struct __attribute__((__packed__)) {
struct cn_msg cn_msg;
enum proc_cn_mcast_op cn_mcast;
};
} smsg;

fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
if (fd < 0) {
perror("socket");
}

sa.nl_family = AF_NETLINK;
sa.nl_groups = CN_IDX_PROC;
sa.nl_pid = getpid();
if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
perror("bind");
}

memset(&smsg, 0, sizeof(smsg));
smsg.nl_hdr.nlmsg_len = sizeof(smsg);
smsg.nl_hdr.nlmsg_pid = getpid();
smsg.nl_hdr.nlmsg_type = NLMSG_DONE;
smsg.cn_msg.id.idx = CN_IDX_PROC;
smsg.cn_msg.id.val = CN_VAL_PROC;
smsg.cn_msg.len = sizeof(enum proc_cn_mcast_op);
smsg.cn_mcast = PROC_CN_MCAST_LISTEN;
if (send(fd, &smsg, sizeof(smsg), 0) != sizeof(smsg)) {
perror("send");
}

while (recv(fd, &rmsg, sizeof(rmsg), 0) == sizeof(rmsg)) {
cpu = rmsg.cn_proc.cpu;
if (cpu < 0) {
continue;
}
seq = rmsg.cn_msg.seq;
if ((last_seq[cpu] != 0) && (seq != last_seq[cpu] + 1)) {
printf("out-of-order seq=%d on cpu=%d\n", seq, cpu);
}
last_seq[cpu] = seq;
}

/* NOTREACHED */

perror("recv");

return -1;
}

Signed-off-by: Aaron Campbell <aaron@monkey.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoBridge: Fix ipv6 mc snooping if bridge has no ipv6 address
daniel [Fri, 24 Jun 2016 10:35:18 +0000 (12:35 +0200)]
Bridge: Fix ipv6 mc snooping if bridge has no ipv6 address

The bridge is falsly dropping ipv6 mulitcast packets if there is:
 1. No ipv6 address assigned on the brigde.
 2. No external mld querier present.
 3. The internal querier enabled.

When the bridge fails to build mld queries, because it has no
ipv6 address, it slilently returns, but keeps the local querier enabled.
This specific case causes confusing packet loss.

Ipv6 multicast snooping can only work if:
 a) An external querier is present
 OR
 b) The bridge has an ipv6 address an is capable of sending own queries

Otherwise it has to forward/flood the ipv6 multicast traffic,
because snooping cannot work.

This patch fixes the issue by adding a flag to the bridge struct that
indicates that there is currently no ipv6 address assinged to the bridge
and returns a false state for the local querier in
__br_multicast_querier_exists().

Special thanks to Linus Lüssing.

Fixes: d1d81d4c3dd8 ("bridge: check return value of ipv6_dev_get_saddr()")
Signed-off-by: Daniel Danzberger <daniel@dd-wrt.com>
Acked-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx5: use mlx5_buf_alloc_node instead of mlx5_buf_alloc in mlx5_wq_ll_create
Wang Sheng-Hui [Fri, 24 Jun 2016 00:52:11 +0000 (08:52 +0800)]
net/mlx5: use mlx5_buf_alloc_node instead of mlx5_buf_alloc in mlx5_wq_ll_create

Commit 311c7c71c9bb ("net/mlx5e: Allocate DMA coherent memory on
reader NUMA node") introduced mlx5_*_alloc_node() but missed changing
some calling and warn messages. This patch introduces 2 changes:
* Use mlx5_buf_alloc_node() instead of mlx5_buf_alloc() in
  mlx5_wq_ll_create()
* Update the failure warn messages with _node postfix for
  mlx5_*_alloc function names

Fixes: 311c7c71c9bb ("net/mlx5e: Allocate DMA coherent memory on reader NUMA node")
Signed-off-by: Wang Sheng-Hui <shhuiw@foxmail.com>
Acked-By: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'bgmac-fixes'
David S. Miller [Tue, 28 Jun 2016 08:22:25 +0000 (04:22 -0400)]
Merge branch 'bgmac-fixes'

Florian Fainelli says:

====================
net: bgmac: Random fixes

This patch series fixes a few issues spotted by code inspection and
actual testing.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: bgmac: Remove superflous netif_carrier_on()
Florian Fainelli [Thu, 23 Jun 2016 21:25:33 +0000 (14:25 -0700)]
net: bgmac: Remove superflous netif_carrier_on()

bgmac_open() calls phy_start() to initialize the PHY state machine,
which will set the interface's carrier state accordingly, no need to
force that as this could be conflicting with the PHY state determined by
PHYLIB.

Fixes: dd4544f05469 ("bgmac: driver for GBit MAC core on BCMA bus")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: bgmac: Start transmit queue in bgmac_open
Florian Fainelli [Thu, 23 Jun 2016 21:25:32 +0000 (14:25 -0700)]
net: bgmac: Start transmit queue in bgmac_open

The driver does not start the transmit queue in bgmac_open(). If the
queue was stopped prior to closing then re-opening the interface, we
would never be able to wake-up again.

Fixes: dd4544f05469 ("bgmac: driver for GBit MAC core on BCMA bus")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: bgmac: Fix SOF bit checking
Florian Fainelli [Thu, 23 Jun 2016 21:23:12 +0000 (14:23 -0700)]
net: bgmac: Fix SOF bit checking

We are checking for the Start of Frame bit in the ctl1 word, while this
bit is set in the ctl0 word instead. Read the ctl0 word and update the
check to verify that.

Fixes: 9cde94506eac ("bgmac: implement scatter/gather support")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobonding: fix 802.3ad aggregator reselection
Jay Vosburgh [Thu, 23 Jun 2016 21:20:51 +0000 (14:20 -0700)]
bonding: fix 802.3ad aggregator reselection

Since commit 7bb11dc9f59d ("bonding: unify all places where
actor-oper key needs to be updated."), the logic in bonding to handle
selection between multiple aggregators has not functioned.

This affects only configurations wherein the bonding slaves
connect to two discrete aggregators (e.g., two independent switches, each
with LACP enabled), thus creating two separate aggregation groups within a
single bond.

The cause is a change in 7bb11dc9f59d to no longer set
AD_PORT_BEGIN on a port after a link state change, which would cause the
port to be reselected for attachment to an aggregator as if were newly
added to the bond.  We cannot restore the prior behavior, as it
contradicts IEEE 802.1AX 5.4.12, which requires ports that "become
inoperable" (lose carrier, setting port_enabled=false as per 802.1AX
5.4.7) to remain selected (i.e., assigned to the aggregator).  As the port
now remains selected, the aggregator selection logic is not invoked.

A side effect of this change is that aggregators in bonding will
now contain ports that are link down.  The aggregator selection logic
does not currently handle this situation correctly, causing incorrect
aggregator selection.

This patch makes two changes to repair the aggregator selection
logic in bonding to function as documented and within the confines of the
standard:

First, the aggregator selection and related logic now utilizes the
number of active ports per aggregator, not the number of selected ports
(as some selected ports may be down).  The ad_select "bandwidth" and
"count" options only consider ports that are link up.

Second, on any carrier state change of any slave, the aggregator
selection logic is explicitly called to insure the correct aggregator is
active.

Reported-by: Veli-Matti Lintu <veli-matti.lintu@opinsys.fi>
Fixes: 7bb11dc9f59d ("bonding: unify all places where actor-oper key needs to be updated.")
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoipmr/ip6mr: Initialize the last assert time of mfc entries.
Tom Goff [Thu, 23 Jun 2016 20:11:57 +0000 (16:11 -0400)]
ipmr/ip6mr: Initialize the last assert time of mfc entries.

This fixes wrong-interface signaling on 32-bit platforms for entries
created when jiffies > 2^31 + MFC_ASSERT_THRESH.

Signed-off-by: Tom Goff <thomas.goff@ll.mit.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agovsock: make listener child lock ordering explicit
Stefan Hajnoczi [Thu, 23 Jun 2016 15:28:58 +0000 (16:28 +0100)]
vsock: make listener child lock ordering explicit

There are several places where the listener and pending or accept queue
child sockets are accessed at the same time.  Lockdep is unhappy that
two locks from the same class are held.

Tell lockdep that it is safe and document the lock ordering.

Originally Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> sent a similar
patch asking whether this is safe.  I have audited the code and also
covered the vsock_pending_work() function.

Suggested-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoipv6: enforce egress device match in per table nexthop lookups
Paolo Abeni [Thu, 23 Jun 2016 13:25:09 +0000 (15:25 +0200)]
ipv6: enforce egress device match in per table nexthop lookups

with the commit 8c14586fc320 ("net: ipv6: Use passed in table for
nexthop lookups"), net hop lookup is first performed on route creation
in the passed-in table.
However device match is not enforced in table lookup, so the found
route can be later discarded due to egress device mismatch and no
global lookup will be performed.
This cause the following to fail:

ip link add dummy1 type dummy
ip link add dummy2 type dummy
ip link set dummy1 up
ip link set dummy2 up
ip route add 2001:db8:8086::/48 dev dummy1 metric 20
ip route add 2001:db8:d34d::/64 via 2001:db8:8086::2 dev dummy1 metric 20
ip route add 2001:db8:8086::/48 dev dummy2 metric 21
ip route add 2001:db8:d34d::/64 via 2001:db8:8086::2 dev dummy2 metric 21
RTNETLINK answers: No route to host

This change fixes the issue enforcing device lookup in
ip6_nh_lookup_table()

v1->v2: updated commit message title

Fixes: 8c14586fc320 ("net: ipv6: Use passed in table for nexthop lookups")
Reported-and-tested-by: Beniamino Galvani <bgalvani@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'linux-can-fixes-for-4.7-20160623' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Mon, 27 Jun 2016 14:05:55 +0000 (10:05 -0400)]
Merge tag 'linux-can-fixes-for-4.7-20160623' of git://git./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2016-06-23

this is a pull request of 3 patches for the upcoming linux-4.7 release.

The first two patches are by Oliver Hartkopp fixing oopes in the generic CAN
device netlink handling. Jimmy Assarsson's patch for the kvaser_usb driver adds
support for more devices by adding their USB product ids.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: smsc911x: Fix bug where PHY interrupts are overwritten by 0
Jeremy Linton [Wed, 22 Jun 2016 17:40:50 +0000 (12:40 -0500)]
net: smsc911x: Fix bug where PHY interrupts are overwritten by 0

By default, mdiobus_alloc() sets the PHYs to polling mode, but a
pointer size memcpy means that a couple IRQs end up being overwritten
with a value of 0. This means that PHY_POLL is disabled and results
in unpredictable behavior depending on the PHY's location on the
MDIO bus. Remove that memcpy and the now unused phy_irq member to
force the SMSC911x PHYs into polling mode 100% of the time.

Fixes: e7f4dc3536a4 ("mdio: Move allocation of interrupts into core")
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMAINTAINERS: Update Mellanox's mlx4 Eth NIC driver entry
Or Gerlitz [Tue, 21 Jun 2016 13:36:06 +0000 (16:36 +0300)]
MAINTAINERS: Update Mellanox's mlx4 Eth NIC driver entry

Tariq Toukan is replacing Eugenia (Jenny) Emantayev as the mlx4
Ethernet driver maintainer, thanks to Jenny and good luck to him.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'wireless-drivers-for-davem-2016-06-21' of git://git.kernel.org/pub/scm...
David S. Miller [Thu, 23 Jun 2016 19:22:31 +0000 (15:22 -0400)]
Merge tag 'wireless-drivers-for-davem-2016-06-21' of git://git./linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for 4.7

iwlwifi

* fix the scan timeout for long scans
* fix an RCU splat caused when updating the TKIP key
* fix a potential NULL-derefence introduced recently
* fix a IGTK key bug that has existed since the MVM driver was introduced
* fix some fw capabilities checks that got accidentally inverted

rtl8xxxu

* fix typo on variable name

ath10k

* fix deadlock when peer cannot be created
* fix crash related to printing features
* fix deadlock while processing rx_in_ord_ind

ath9k

* fix GPIO mask regression for AR9462 and AR9565
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agogeneve: fix tx_errors statistics
Haishuang Yan [Tue, 21 Jun 2016 08:26:49 +0000 (16:26 +0800)]
geneve: fix tx_errors statistics

Tx errors present summation of errors encountered while transmitting
packets.

Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: vrf: replace hard tab with space in assignment
Chris Packham [Tue, 21 Jun 2016 03:39:43 +0000 (15:39 +1200)]
net: vrf: replace hard tab with space in assignment

The assignment of rth->dst.output in vrf_rt6_create() and
vrf_rtable_create() used a hard tab before the '='. The neighboring
assignments did not. Make the assignment of rth->dst.output consistent
with the surrounding code.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonetem: fix a use after free
Eric Dumazet [Mon, 20 Jun 2016 22:00:43 +0000 (15:00 -0700)]
netem: fix a use after free

If the packet was dropped by lower qdisc, then we must not
access it later.

Save qdisc_pkt_len(skb) in a temp variable.

Fixes: 2ccccf5fb43f ("net_sched: update hierarchical backlog too")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoact_ife: acquire ife_mod_lock before reading ifeoplist
WANG Cong [Mon, 20 Jun 2016 20:37:19 +0000 (13:37 -0700)]
act_ife: acquire ife_mod_lock before reading ifeoplist

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoact_ife: only acquire tcf_lock for existing actions
WANG Cong [Mon, 20 Jun 2016 20:37:18 +0000 (13:37 -0700)]
act_ife: only acquire tcf_lock for existing actions

Alexey reported that we have GFP_KERNEL allocation when
holding the spinlock tcf_lock. Actually we don't have
to take that spinlock for all the cases, especially
for the new one we just create. To modify the existing
actions, we still need this spinlock to make sure
the whole update is atomic.

For net-next, we can get rid of this spinlock because
we already hold the RTNL lock on slow path, and on fast
path we can use RCU to protect the metalist.

Joint work with Jamal.

Reported-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoesp: Fix ESN generation under UDP encapsulation
Herbert Xu [Sat, 18 Jun 2016 05:03:36 +0000 (13:03 +0800)]
esp: Fix ESN generation under UDP encapsulation

Blair Steven noticed that ESN in conjunction with UDP encapsulation
is broken because we set the temporary ESP header to the wrong spot.

This patch fixes this by first of all using the right spot, i.e.,
4 bytes off the real ESP header, and then saving this information
so that after encryption we can restore it properly.

Fixes: 7021b2e1cddd ("esp4: Switch to new AEAD interface")
Reported-by: Blair Steven <Blair.Steven@alliedtelesis.co.nz>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agocan: kvaser_usb: Add support for more Kvaser Leaf v2 devices
Jimmy Assarsson [Thu, 23 Jun 2016 05:57:21 +0000 (07:57 +0200)]
can: kvaser_usb: Add support for more Kvaser Leaf v2 devices

This patch adds support for Kvaser Leaf Light HS v2 OEM, Mini PCI
Express 2xHS and USBcan Light 2xHS.

Signed-off-by: Jimmy Assarsson <jimmyassarsson@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
8 years agocan: fix oops caused by wrong rtnl dellink usage
Oliver Hartkopp [Tue, 21 Jun 2016 13:45:47 +0000 (15:45 +0200)]
can: fix oops caused by wrong rtnl dellink usage

For 'real' hardware CAN devices the netlink interface is used to set CAN
specific communication parameters. Real CAN hardware can not be created nor
removed with the ip tool ...

This patch adds a private dellink function for the CAN device driver interface
that does just nothing.

It's a follow up to commit 993e6f2fd ("can: fix oops caused by wrong rtnl
newlink usage") but for dellink.

Reported-by: ajneu <ajneu1@gmail.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
8 years agocan: fix handling of unmodifiable configuration options fix
Oliver Hartkopp [Tue, 21 Jun 2016 10:14:07 +0000 (12:14 +0200)]
can: fix handling of unmodifiable configuration options fix

With upstream commit bb208f144cf3f59 (can: fix handling of unmodifiable
configuration options) a new can_validate() function was introduced.

When invoking 'ip link set can0 type can' without any configuration data
can_validate() tries to validate the content without taking into account that
there's totally no content. This patch adds a check for missing content.

Reported-by: ajneu <ajneu1@gmail.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
8 years agoMerge branch 'mlx4-fixes'
David S. Miller [Wed, 22 Jun 2016 20:38:17 +0000 (16:38 -0400)]
Merge branch 'mlx4-fixes'

Tariq Toukan says:

====================
mlx4_en fixes for 4.7-rc

This small patchset includes two small fixes for mlx4_en driver.

One allows a clean shutdown even when clients do not release their
netdev reference.
The other adds error return values to the VLAN VID add/kill functions.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx4_en: Avoid unregister_netdev at shutdown flow
Eran Ben Elisha [Tue, 21 Jun 2016 11:20:03 +0000 (14:20 +0300)]
net/mlx4_en: Avoid unregister_netdev at shutdown flow

This allows a clean shutdown, even if some netdev clients do not
release their reference from this netdev. It is enough to release
the HW resources only as the kernel is shutting down.

Fixes: 2ba5fbd62b25 ('net/mlx4_core: Handle AER flow properly')
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet/mlx4_en: Fix the return value of a failure in VLAN VID add/kill
Kamal Heib [Tue, 21 Jun 2016 11:20:02 +0000 (14:20 +0300)]
net/mlx4_en: Fix the return value of a failure in VLAN VID add/kill

Modify mlx4_en_vlan_rx_[add/kill]_vid to return error value in case of
failure.

Fixes: 8e586137e6b6 ('net: make vlan ndo_vlan_rx_[add/kill]_vid return error value')
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotipc: unclone unbundled buffers before forwarding
Jon Paul Maloy [Mon, 20 Jun 2016 13:20:46 +0000 (09:20 -0400)]
tipc: unclone unbundled buffers before forwarding

When extracting an individual message from a received "bundle" buffer,
we just create a clone of the base buffer, and adjust it to point into
the right position of the linearized data area of the latter. This works
well for regular message reception, but during periods of extremely high
load it may happen that an extracted buffer, e.g, a connection probe, is
reversed and forwarded through an external interface while the preceding
extracted message is still unhandled. When this happens, the header or
data area of the preceding message will be partially overwritten by a
MAC header, leading to unpredicatable consequences, such as a link
reset.

We now fix this by ensuring that the msg_reverse() function never
returns a cloned buffer, and that the returned buffer always contains
sufficient valid head and tail room to be forwarded.

Reported-by: Erik Hugne <erik.hugne@gmail.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agokcm: fix /proc memory leak
Jiri Slaby [Mon, 20 Jun 2016 09:36:28 +0000 (11:36 +0200)]
kcm: fix /proc memory leak

Every open of /proc/net/kcm leaks 16 bytes of memory as is reported by
kmemleak:
unreferenced object 0xffff88059c0e3458 (size 192):
  comm "cat", pid 1401, jiffies 4294935742 (age 310.720s)
  hex dump (first 32 bytes):
    28 45 71 96 05 88 ff ff 00 10 00 00 00 00 00 00  (Eq.............
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8156a2de>] kmem_cache_alloc_trace+0x16e/0x230
    [<ffffffff8162a479>] seq_open+0x79/0x1d0
    [<ffffffffa0578510>] kcm_seq_open+0x0/0x30 [kcm]
    [<ffffffff8162a479>] seq_open+0x79/0x1d0
    [<ffffffff8162a8cf>] __seq_open_private+0x2f/0xa0
    [<ffffffff81712548>] seq_open_net+0x38/0xa0
...

It is caused by a missing free in the ->release path. So fix it by
providing seq_release_net as the ->release method.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Fixes: cd6e111bf5 (kcm: Add statistics and proc interfaces)
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Tom Herbert <tom@herbertland.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoteam: Fix possible deadlock during team enslave
Ido Schimmel [Mon, 20 Jun 2016 08:53:20 +0000 (11:53 +0300)]
team: Fix possible deadlock during team enslave

Both dev_uc_sync_multiple() and dev_mc_sync_multiple() require the
source device to be locked by netif_addr_lock_bh(), but this is missing
in team's enslave function, so add it.

This fixes the following lockdep warning:

Possible interrupt unsafe locking scenario:

        CPU0                    CPU1
        ----                    ----
   lock(_xmit_ETHER/1);
                                local_irq_disable();
                                lock(&(&mc->mca_lock)->rlock);
                                lock(&team_netdev_addr_lock_key);
   <Interrupt>
     lock(&(&mc->mca_lock)->rlock);

  *** DEADLOCK ***

Fixes: cb41c997d444 ("team: team should sync the port's uc/mc addrs when add a port")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge tag 'linux-can-fixes-for-4.7-20160620' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Wed, 22 Jun 2016 20:29:17 +0000 (16:29 -0400)]
Merge tag 'linux-can-fixes-for-4.7-20160620' of git://git./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2016-06-20

this is a pull request of 3 patches for the upcoming linux-4.7 release.

The first patch is by Thor Thayer for the c_can/d_can driver. It fixes the
registar access on Altera Cyclone devices, which caused CAN frames to have 0x0
in the first two bytes incorrectly. Wolfgang Grandegger's patch for the at91
driver fixes a hanging driver under high bus load situations. A patch for the
gs_usb driver by Maximilian Schneider adds support for the bytewerk.org
candleLight interface.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agocan: gs_usb: Add Basic support for the bytewerk.org candleLight interface
Maximilian Schneider [Wed, 8 Jun 2016 18:00:26 +0000 (18:00 +0000)]
can: gs_usb: Add Basic support for the bytewerk.org candleLight interface

This patchs adds basic support for the bytewerk.org candleLight interface,
a open hardware (CERN OHL) USB CAN adapter.

Signed-off-by: Hubert Denkmair <hubert@denkmair.de>
Signed-off-by: Maximilian Schneider <max@schneidersoft.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
8 years agocan: at91_can: RX queue could get stuck at high bus load
Wolfgang Grandegger [Mon, 13 Jun 2016 13:44:19 +0000 (15:44 +0200)]
can: at91_can: RX queue could get stuck at high bus load

At high bus load it could happen that "at91_poll()" enters with all RX
message boxes filled up. If then at the end the "quota" is exceeded as
well, "rx_next" will not be reset to the first RX mailbox and hence the
interrupts remain disabled.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Tested-by: Amr Bekhit <amrbekhit@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
8 years agocan: c_can: Update D_CAN TX and RX functions to 32 bit - fix Altera Cyclone access
Thor Thayer [Thu, 16 Jun 2016 16:10:19 +0000 (11:10 -0500)]
can: c_can: Update D_CAN TX and RX functions to 32 bit - fix Altera Cyclone access

When testing CAN write floods on Altera's CycloneV, the first 2 bytes
are sometimes 0x00, 0x00 or corrupted instead of the values sent. Also
observed bytes 4 & 5 were corrupted in some cases.

The D_CAN Data registers are 32 bits and changing from 16 bit writes to
32 bit writes fixes the problem.

Testing performed on Altera CycloneV (D_CAN).  Requesting tests on other
C_CAN & D_CAN platforms.

Reported-by: Richard Andrysek <richard.andrysek@gomtec.de>
Signed-off-by: Thor Thayer <tthayer@opensource.altera.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
8 years agoMerge branch 'qed-fixes'
David S. Miller [Sun, 19 Jun 2016 17:47:33 +0000 (10:47 -0700)]
Merge branch 'qed-fixes'

Yuval Mintz says:

====================
qed*: Fixes series

This series contains several small fixes to driver behavior
[4th patch is the only one containing a 'fatal' fix, but the error
is only theoretical for qede; if would require another protocol
driver yet unsubmitted to reach it].
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Add missing port-mode
Yuval Mintz [Sun, 19 Jun 2016 12:18:15 +0000 (15:18 +0300)]
qed: Add missing port-mode

The 'MODULE_FIBER' value replaced several other FIBER values
in newer management firmware images, so existing code would
fail to properly reflect its mode.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Fix returning unlimited SPQ entries
Yuval Mintz [Sun, 19 Jun 2016 12:18:14 +0000 (15:18 +0300)]
qed: Fix returning unlimited SPQ entries

Driver has 2 sets of entries for handling ramrod configurations
toward firmware - a regular pre-allocated set of entires and a
possible 'unlimited' list of additional pending entries.

In most scenarios the 'unlimited' list would not be used, but
when it does the handling of the ramrod completion doesn't
properly handle the release of the entry.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed*: Don't reset statistics on inner reload
Yuval Mintz [Sun, 19 Jun 2016 12:18:13 +0000 (15:18 +0300)]
qed*: Don't reset statistics on inner reload

Several user APIs can cause driver to perform an inner-reload.
Currently, doing this would cause the HW/FW statistics of the
adapter to reset, which isn't the expected behavior [statistics
should only reset on explicit unloads].

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Prevent VF from Tx-switching 'promisc'
Yuval Mintz [Sun, 19 Jun 2016 12:18:12 +0000 (15:18 +0300)]
qed: Prevent VF from Tx-switching 'promisc'

Internal loopback in driver is based on two things - first
is the willingness of transmitter to use it [in case of VFs,
this can be forced based on VEPA/VEB] and secondly on another
vport classification configuration which should match the
packet's destination.

Current code allows non-linux VFs to configure a 'promisc'
mode on Tx, meaning all traffic sent by VF would be loopbacked
internally by firmware; This isn't considered a valid mode and
as such should be prevented by PF.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoqed: Correct default vlan behavior
Yuval Mintz [Sun, 19 Jun 2016 12:18:11 +0000 (15:18 +0300)]
qed: Correct default vlan behavior

When no vlan filter is configured, firmware has a configurable
default on whether to pass only untagged packets or all packets
regardless of their tagging. Driver currently doesn't set this
field in the necessary ramrod, causing the default to always be
'receive all'.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: rds: fix coding style issues
Joshua Houghton [Sat, 18 Jun 2016 15:46:31 +0000 (15:46 +0000)]
net: rds: fix coding style issues

Fix coding style issues in the following files:

ib_cm.c:      add space
loop.c:       convert spaces to tabs
sysctl.c:     add space
tcp.h:        convert spaces to tabs
tcp_connect.c:remove extra indentation in switch statement
tcp_recv.c:   convert spaces to tabs
tcp_send.c:   convert spaces to tabs
transport.c:  move brace up one line on for statement

Signed-off-by: Joshua Houghton <josh@awful.name>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoAX.25: Close socket connection on session completion
Basil Gunn [Thu, 16 Jun 2016 16:42:30 +0000 (09:42 -0700)]
AX.25: Close socket connection on session completion

A socket connection made in ax.25 is not closed when session is
completed.  The heartbeat timer is stopped prematurely and this is
where the socket gets closed. Allow heatbeat timer to run to close
socket. Symptom occurs in kernels >= 4.2.0

Originally sent 6/15/2016. Resend with distribution list matching
scripts/maintainer.pl output.

Signed-off-by: Basil Gunn <basil@pacabunga.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoRDS: TCP: rds_tcp_accept_one() should transition socket from RESETTING to UP
Sowmini Varadhan [Fri, 17 Jun 2016 20:12:12 +0000 (16:12 -0400)]
RDS: TCP: rds_tcp_accept_one() should transition socket from RESETTING to UP

The state of the rds_connection after rds_tcp_reset_callbacks() would
be RDS_CONN_RESETTING and this is the value that should be passed
by rds_tcp_accept_one()  to rds_connect_path_complete() to transition
the socket to RDS_CONN_UP.

Fixes: b5c21c0947c1 ("RDS: TCP: fix race windows in send-path quiescence
by rds_tcp_accept_one()")
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: tilegx: use correct timespec64 type
Arnd Bergmann [Fri, 17 Jun 2016 16:15:30 +0000 (18:15 +0200)]
net: tilegx: use correct timespec64 type

The conversion to the 64-bit time based ptp methods left two instances
of 'struct timespec' in place. This is harmless because 64-bit
architectures define timespec64 as timespec, and this driver is
not used on 32-bit machines.

However, using 'struct timespec64' directly is obviously the right
thing to do, and will help us remove 'struct timespec' in the future.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: b9acf24f779c ("ptp: tilegx: convert to the 64 bit get/set time methods.")
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'mlxsw-fixes'
David S. Miller [Sat, 18 Jun 2016 04:57:54 +0000 (21:57 -0700)]
Merge branch 'mlxsw-fixes'

Jiri Pirko says:

====================
mlxsw: couple of fixes

Couple of slowpath tx stats fixes for Spectrum and SwitchX-2.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: switchx2: Don't count internal TX header bytes to stats
Nogah Frankel [Fri, 17 Jun 2016 13:09:06 +0000 (15:09 +0200)]
mlxsw: switchx2: Don't count internal TX header bytes to stats

Stop the SW TX counter from counting the TX header bytes
since they are not being sent out.

Fixes: e577516b9db3 ("mlxsw: Fix use-after-free bug in mlxsw_sx_port_xmit")
Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlxsw: spectrum: Don't count internal TX header bytes to stats
Nogah Frankel [Fri, 17 Jun 2016 13:09:05 +0000 (15:09 +0200)]
mlxsw: spectrum: Don't count internal TX header bytes to stats

Stop the SW TX counter from counting the TX header bytes
since they are not being sent out.

Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotipc: fix socket timer deadlock
Jon Paul Maloy [Fri, 17 Jun 2016 10:35:57 +0000 (06:35 -0400)]
tipc: fix socket timer deadlock

We sometimes observe a 'deadly embrace' type deadlock occurring
between mutually connected sockets on the same node. This happens
when the one-hour peer supervision timers happen to expire
simultaneously in both sockets.

The scenario is as follows:

CPU 1:                          CPU 2:
--------                        --------
tipc_sk_timeout(sk1)            tipc_sk_timeout(sk2)
  lock(sk1.slock)                 lock(sk2.slock)
  msg_create(probe)               msg_create(probe)
  unlock(sk1.slock)               unlock(sk2.slock)
  tipc_node_xmit_skb()            tipc_node_xmit_skb()
    tipc_node_xmit()                tipc_node_xmit()
      tipc_sk_rcv(sk2)                tipc_sk_rcv(sk1)
        lock(sk2.slock)                 lock((sk1.slock)
        filter_rcv()                    filter_rcv()
          tipc_sk_proto_rcv()             tipc_sk_proto_rcv()
            msg_create(probe_rsp)           msg_create(probe_rsp)
            tipc_sk_respond()               tipc_sk_respond()
              tipc_node_xmit_skb()            tipc_node_xmit_skb()
                tipc_node_xmit()                tipc_node_xmit()
                  tipc_sk_rcv(sk1)                tipc_sk_rcv(sk2)
                    lock((sk1.slock)                lock((sk2.slock)
                    ===> DEADLOCK                   ===> DEADLOCK

Further analysis reveals that there are three different locations in the
socket code where tipc_sk_respond() is called within the context of the
socket lock, with ensuing risk of similar deadlocks.

We now solve this by passing a buffer queue along with all upcalls where
sk_lock.slock may potentially be held. Response or rejected message
buffers are accumulated into this queue instead of being sent out
directly, and only sent once we know we are safely outside the slock
context.

Reported-by: GUNA <gbalasun@gmail.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
David S. Miller [Sat, 18 Jun 2016 02:50:04 +0000 (19:50 -0700)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for your net tree,
they are rather small patches but fixing several outstanding bugs in
nf_conntrack and nf_tables, as well as minor problems with missing
SYNPROXY header uapi installation:

1) Oneliner not to leak conntrack kmemcache on module removal, this
   problem was introduced in the previous merge window, patch from
   Florian Westphal.

2) Two fixes for insufficient ruleset loop validation, one due to
   incorrect flag check in nf_tables_bind_set() and another related to
   silly wrong generation mask logic from the walk path, from Liping
   Zhang.

3) Fix double-free of anonymous sets on error, this fix simplifies the
   code to let the abort path take care of releasing the set object,
   also from Liping Zhang.

4) The introduction of helper function for transactions broke the skip
   inactive rules logic from the nft_do_chain(), again from Liping
   Zhang.

5) Two patches to install uapi xt_SYNPROXY.h header and calm down
   kbuild robot due to missing #include <linux/types.h>.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonetfilter: xt_SYNPROXY: include missing <linux/types.h>
Pablo Neira Ayuso [Fri, 17 Jun 2016 10:54:18 +0000 (12:54 +0200)]
netfilter: xt_SYNPROXY: include missing <linux/types.h>

./usr/include/linux/netfilter/xt_SYNPROXY.h:11: found __[us]{8,16,32,64} type without #include <linux/types.h>

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agonetfilter: xt_SYNPROXY: add missing header to Kbuild
Pablo Neira Ayuso [Fri, 17 Jun 2016 10:54:18 +0000 (12:54 +0200)]
netfilter: xt_SYNPROXY: add missing header to Kbuild

Matt Whitlock says:

 Without this line, the file xt_SYNPROXY.h does not get installed in
 /usr/include/linux/netfilter/, and thus user-space programs cannot make
 use of it.

Reported-by: Matt Whitlock <kernel@mattwhitlock.name>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8 years agonfp: use correct index to mask link state irq
Jakub Kicinski [Thu, 16 Jun 2016 13:42:50 +0000 (14:42 +0100)]
nfp: use correct index to mask link state irq

We were using an incorrect define to get the irq vector number.
NFP_NET_CFG_LSC is a control BAR offset, LSC interrupt vector
index is called NFP_NET_IRQ_LSC_IDX.  For machines with less
than 30 CPUs this meant that we were disabling/enabling IRQ 0.
For bigger hosts we were just playing with the 31st RX/TX
interrupt.

Fixes: 0ba40af963f0 ("nfp: move link state interrupt request/free calls")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agosit: correct IP protocol used in ipip6_err
Simon Horman [Thu, 16 Jun 2016 08:06:19 +0000 (17:06 +0900)]
sit: correct IP protocol used in ipip6_err

Since 32b8a8e59c9c ("sit: add IPv4 over IPv4 support")
ipip6_err() may be called for packets whose IP protocol is
IPPROTO_IPIP as well as those whose IP protocol is IPPROTO_IPV6.

In the case of IPPROTO_IPIP packets the correct protocol value is not
passed to ipv4_update_pmtu() or ipv4_redirect().

This patch resolves this problem by using the IP protocol of the packet
rather than a hard-coded value. This appears to be consistent
with the usage of the protocol of a packet by icmp_socket_deliver()
the caller of ipip6_err().

I was able to exercise the redirect case by using a setup where an ICMP
redirect was received for the destination of the encapsulated packet.
However, it appears that although incorrect the protocol field is not used
in this case and thus no problem manifests.  On inspection it does not
appear that a problem will manifest in the fragmentation needed/update pmtu
case either.

In short I believe this is a cosmetic fix. None the less, the use of
IPPROTO_IPV6 seems wrong and confusing.

Reviewed-by: Dinan Gunawardena <dinan.gunawardena@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomlx4e: Do not attempt to offload VXLAN ports that are unrecognized
Alexander Duyck [Wed, 15 Jun 2016 21:42:11 +0000 (14:42 -0700)]
mlx4e: Do not attempt to offload VXLAN ports that are unrecognized

The mlx4e driver does not support more than one port for VXLAN offload.  As
such expecting the hardware to offload other ports is invalid since it
appears the parsing logic is used to perform Tx checksum and segmentation
offloads.  Use the vxlan_port number to determine in which cases we can
apply the offload and in which cases we can not.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: sfc: avoid -Wtype-limits warning
Arnd Bergmann [Wed, 15 Jun 2016 20:31:10 +0000 (22:31 +0200)]
net: sfc: avoid -Wtype-limits warning

When building with -Wextra, we get a harmless warning from the
EFX_EXTRACT_OWORD32 macro:

ethernet/sfc/farch.c: In function 'efx_farch_test_registers':
ethernet/sfc/farch.c:119:30: error: comparison of unsigned expression < 0 is always false [-Werror=type-limits]
ethernet/sfc/farch.c:124:144: error: comparison of unsigned expression < 0 is always false [-Werror=type-limits]
ethernet/sfc/farch.c:124:392: error: comparison of unsigned expression < 0 is always false [-Werror=type-limits]
ethernet/sfc/farch.c:124:731: error: comparison of unsigned expression < 0 is always false [-Werror=type-limits]

The macro and the caller are both correct, but we can avoid the
warning by changing the index variable to a signed type.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge ath-current from ath.git
Kalle Valo [Thu, 16 Jun 2016 14:55:19 +0000 (17:55 +0300)]
Merge ath-current from ath.git

ath.git fixes for 4.7. Major changes:

ath9k

* fix GPIO mask regression with AR9462 and AR9565

ath10k

* fix deadlock while processing rx_in_ord_ind
* fix crash related to printing firmware features in debug mode
* fix deadlock when peer cannot be created

8 years agortl8xxxu: fix typo on variable name, compare against correct variable
Colin Ian King [Thu, 9 Jun 2016 18:38:50 +0000 (14:38 -0400)]
rtl8xxxu: fix typo on variable name, compare against correct variable

path_b_ok is being assigned but immediately after path_a_ok is being
compared to the value 0x03.  This appears to be a typo on the
variable name, compare path_b_ok instead.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8 years agoMerge branch 'r8152-fixes'
David S. Miller [Thu, 16 Jun 2016 06:39:18 +0000 (23:39 -0700)]
Merge branch 'r8152-fixes'

Hayes Wang says:

====================
r8152: fix known issues

These patches fix some known issues.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agor8152: correct the rx early size
hayeswang [Thu, 16 Jun 2016 02:55:19 +0000 (10:55 +0800)]
r8152: correct the rx early size

The rx early size should be

(agg_buf_sz - packet size) / 8

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agor8152: reset the bmu
hayeswang [Thu, 16 Jun 2016 02:55:18 +0000 (10:55 +0800)]
r8152: reset the bmu

Reset the BMU to clear the rx/tx fifo. This avoids that the unexpected
data remains in the hw.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agor8152: disable MAC clock speed down
hayeswang [Thu, 16 Jun 2016 02:55:17 +0000 (10:55 +0800)]
r8152: disable MAC clock speed down

Disable MAC clock speed down. It may casue the first control
transfer to contain the wrong data, when the power state change
from U1 to U0.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'bpf-fixes'
David S. Miller [Thu, 16 Jun 2016 06:37:55 +0000 (23:37 -0700)]
Merge branch 'bpf-fixes'

Alexei Starovoitov says:

====================
bpf fixes

Fixes for two bpf bugs:
1st bug reported by Sasha Goldshtein here:
https://github.com/iovisor/bcc/issues/570
2nd discovered by Daniel Borkmann by manual code analysis.
See patches for details.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf, trace: check event type in bpf_perf_event_read
Alexei Starovoitov [Thu, 16 Jun 2016 01:25:39 +0000 (18:25 -0700)]
bpf, trace: check event type in bpf_perf_event_read

similar to bpf_perf_event_output() the bpf_perf_event_read() helper
needs to check the type of the perf_event before reading the counter.

Fixes: a43eec304259 ("bpf: introduce bpf_perf_event_output() helper")
Reported-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agobpf: fix matching of data/data_end in verifier
Alexei Starovoitov [Thu, 16 Jun 2016 01:25:38 +0000 (18:25 -0700)]
bpf: fix matching of data/data_end in verifier

The ctx structure passed into bpf programs is different depending on bpf
program type. The verifier incorrectly marked ctx->data and ctx->data_end
access based on ctx offset only. That caused loads in tracing programs
int bpf_prog(struct pt_regs *ctx) { .. ctx->ax .. }
to be incorrectly marked as PTR_TO_PACKET which later caused verifier
to reject the program that was actually valid in tracing context.
Fix this by doing program type specific matching of ctx offsets.

Fixes: 969bf05eb3ce ("bpf: direct packet access")
Reported-by: Sasha Goldshtein <goldshtn@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agogre: fix error handler
Eric Dumazet [Wed, 15 Jun 2016 13:24:00 +0000 (06:24 -0700)]
gre: fix error handler

1) gre_parse_header() can be called from gre_err()

   At this point transport header points to ICMP header, not the inner
header.

2) We can not really change transport header as ipgre_err() will later
assume transport header still points to ICMP header (using icmp_hdr())

3) pskb_may_pull() logic in gre_parse_header() really works
  if we are interested at zone pointed by skb->data

4) As Jiri explained in commit b7f8fe251e46 ("gre: do not pull header in
ICMP error processing") we should not pull headers in error handler.

So this fix :

A) changes gre_parse_header() to use skb->data instead of
skb_transport_header()

B) Adds a nhs parameter to gre_parse_header() so that we can skip the
not pulled IP header from error path.
  This offset is 0 for normal receive path.

C) remove obsolete IPV6 includes

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <tom@herbertland.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: Don't forget pr_fmt on net_dbg_ratelimited for CONFIG_DYNAMIC_DEBUG
Jason A. Donenfeld [Wed, 15 Jun 2016 09:14:53 +0000 (11:14 +0200)]
net: Don't forget pr_fmt on net_dbg_ratelimited for CONFIG_DYNAMIC_DEBUG

The implementation of net_dbg_ratelimited in the CONFIG_DYNAMIC_DEBUG
case was added with 2c94b5373 ("net: Implement net_dbg_ratelimited() for
CONFIG_DYNAMIC_DEBUG case"). The implementation strategy was to take the
usual definition of the dynamic_pr_debug macro, but alter it by adding a
call to "net_ratelimit()" in the if statement. This is, in fact, the
correct approach.

However, while doing this, the author of the commit forgot to surround
fmt by pr_fmt, resulting in unprefixed log messages appearing in the
console. So, this commit adds back the pr_fmt(fmt) invocation, making
net_dbg_ratelimited properly consistent across DEBUG, no DEBUG, and
DYNAMIC_DEBUG cases, and bringing parity with the behavior of
dynamic_pr_debug as well.

Fixes: 2c94b5373 ("net: Implement net_dbg_ratelimited() for CONFIG_DYNAMIC_DEBUG case")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Tim Bingham <tbingham@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet: skfb: remove obsolete -I cflag
Arnd Bergmann [Wed, 15 Jun 2016 15:45:51 +0000 (17:45 +0200)]
net: skfb: remove obsolete -I cflag

The skfp driver has been moved to drivers/net/fddi/skfp a long time
ago, but we still attempt to include headers from the old location,
which causes a warning when building with W=1:

cc1: error: /git/arm-soc/drivers/net/skfp: No such file or directory [-Werror=missing-include-dirs]
cc1: error: drivers/net/skfp: No such file or directory [-Werror=missing-include-dirs]

Clearly this include directive is not needed any more, so we can
just remove it now.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotipc: eliminate uninitialized variable warning
Ying Xue [Wed, 15 Jun 2016 06:11:31 +0000 (14:11 +0800)]
tipc: eliminate uninitialized variable warning

net/tipc/link.c: In function ‘tipc_link_timeout’:
net/tipc/link.c:744:28: warning: ‘mtyp’ may be used uninitialized in this function [-Wuninitialized]

Fixes: 42b18f605fea ("tipc: refactor function tipc_link_timeout()")
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agotipc: fix suspicious RCU usage
Ying Xue [Wed, 15 Jun 2016 06:10:57 +0000 (14:10 +0800)]
tipc: fix suspicious RCU usage

When run tipcTS&tipcTC test suite, the following complaint appears:

[   56.926168] ===============================
[   56.926169] [ INFO: suspicious RCU usage. ]
[   56.926171] 4.7.0-rc1+ #160 Not tainted
[   56.926173] -------------------------------
[   56.926174] net/tipc/bearer.c:408 suspicious rcu_dereference_protected() usage!
[   56.926175]
[   56.926175] other info that might help us debug this:
[   56.926175]
[   56.926177]
[   56.926177] rcu_scheduler_active = 1, debug_locks = 1
[   56.926179] 3 locks held by swapper/4/0:
[   56.926180]  #0:  (((&req->timer))){+.-...}, at: [<ffffffff810e79b5>] call_timer_fn+0x5/0x340
[   56.926203]  #1:  (&(&req->lock)->rlock){+.-...}, at: [<ffffffffa000c29b>] disc_timeout+0x1b/0xd0 [tipc]
[   56.926212]  #2:  (rcu_read_lock){......}, at: [<ffffffffa00055e0>] tipc_bearer_xmit_skb+0xb0/0x2e0 [tipc]
[   56.926218]
[   56.926218] stack backtrace:
[   56.926221] CPU: 4 PID: 0 Comm: swapper/4 Not tainted 4.7.0-rc1+ #160
[   56.926222] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
[   56.926224]  0000000000000000 ffff880016803d28 ffffffff813c4423 ffff8800154252c0
[   56.926227]  0000000000000001 ffff880016803d58 ffffffff810b7512 ffff8800124d8120
[   56.926230]  ffff880013f8a160 ffff8800132b5ccc ffff8800124d8120 ffff880016803d88
[   56.926234] Call Trace:
[   56.926235]  <IRQ>  [<ffffffff813c4423>] dump_stack+0x67/0x94
[   56.926250]  [<ffffffff810b7512>] lockdep_rcu_suspicious+0xe2/0x120
[   56.926256]  [<ffffffffa00051f1>] tipc_l2_send_msg+0x131/0x1c0 [tipc]
[   56.926261]  [<ffffffffa000567c>] tipc_bearer_xmit_skb+0x14c/0x2e0 [tipc]
[   56.926266]  [<ffffffffa00055e0>] ? tipc_bearer_xmit_skb+0xb0/0x2e0 [tipc]
[   56.926273]  [<ffffffffa000c280>] ? tipc_disc_init_msg+0x1f0/0x1f0 [tipc]
[   56.926278]  [<ffffffffa000c280>] ? tipc_disc_init_msg+0x1f0/0x1f0 [tipc]
[   56.926283]  [<ffffffffa000c2d6>] disc_timeout+0x56/0xd0 [tipc]
[   56.926288]  [<ffffffff810e7a68>] call_timer_fn+0xb8/0x340
[   56.926291]  [<ffffffff810e79b5>] ? call_timer_fn+0x5/0x340
[   56.926296]  [<ffffffffa000c280>] ? tipc_disc_init_msg+0x1f0/0x1f0 [tipc]
[   56.926300]  [<ffffffff810e8f4a>] run_timer_softirq+0x23a/0x390
[   56.926306]  [<ffffffff810f89ff>] ? clockevents_program_event+0x7f/0x130
[   56.926316]  [<ffffffff819727c3>] __do_softirq+0xc3/0x4a2
[   56.926323]  [<ffffffff8106ba5a>] irq_exit+0x8a/0xb0
[   56.926327]  [<ffffffff81972456>] smp_apic_timer_interrupt+0x46/0x60
[   56.926331]  [<ffffffff81970a49>] apic_timer_interrupt+0x89/0x90
[   56.926333]  <EOI>  [<ffffffff81027fda>] ? default_idle+0x2a/0x1a0
[   56.926340]  [<ffffffff81027fd8>] ? default_idle+0x28/0x1a0
[   56.926342]  [<ffffffff810289cf>] arch_cpu_idle+0xf/0x20
[   56.926345]  [<ffffffff810adf0f>] default_idle_call+0x2f/0x50
[   56.926347]  [<ffffffff810ae145>] cpu_startup_entry+0x215/0x3e0
[   56.926353]  [<ffffffff81040ad9>] start_secondary+0xf9/0x100

The warning appears as rtnl_dereference() is wrongly used in
tipc_l2_send_msg() under RCU read lock protection. Instead the proper
usage should be that rcu_dereference_rtnl() is called here.

Fixes: 5b7066c3dd24 ("tipc: stricter filtering of packets in bearer layer")
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoMerge branch 'macsec-fixes'
David S. Miller [Wed, 15 Jun 2016 21:47:46 +0000 (14:47 -0700)]
Merge branch 'macsec-fixes'

Sabrina Dubroca says:

====================
macsec fixes

Patch 1 adds rcu_barrier() during module unload to prevent possible
panics.

Patch 2 allocates memory for scattergather lists and the IV on the
heap, since they can escape the current function's context during
crypto callbacks.

Patch 3 fixes a failure to create secure associations.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomacsec: fix SA initialization
Sabrina Dubroca [Tue, 14 Jun 2016 13:25:16 +0000 (15:25 +0200)]
macsec: fix SA initialization

The ASYNC flag prevents initialization on some physical machines.

Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomacsec: allocate sg and iv on the heap
Sabrina Dubroca [Tue, 14 Jun 2016 13:25:15 +0000 (15:25 +0200)]
macsec: allocate sg and iv on the heap

For the crypto callbacks to work properly, we cannot have sg and iv on
the stack.  Use kmalloc instead, with a single allocation for
aead_request + scatterlist + iv.

Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agomacsec: add rcu_barrier() on module exit
Sabrina Dubroca [Tue, 14 Jun 2016 13:25:14 +0000 (15:25 +0200)]
macsec: add rcu_barrier() on module exit

Without this, the various uses of call_rcu could cause a kernel panic.

Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agohtb: call qdisc_root with rcu read lock held
Florian Westphal [Tue, 14 Jun 2016 04:16:27 +0000 (06:16 +0200)]
htb: call qdisc_root with rcu read lock held

saw a debug splat:
net/include/net/sch_generic.h:287 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
 2 locks held by kworker/2:1/710:
  #0:  ("events"){.+.+.+}, at: [<ffffffff8106ca1d>]
  #1:  ((&q->work)){+.+...}, at: [<ffffffff8106ca1d>] process_one_work+0x14d/0x690
Workqueue: events htb_work_func
Call Trace:
 [<ffffffff812dc763>] dump_stack+0x85/0xc2
 [<ffffffff8109fee7>] lockdep_rcu_suspicious+0xe7/0x120
 [<ffffffff814ced47>] htb_work_func+0x67/0x70

Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agonet sched actions: bug fix dumping actions directly didnt produce NLMSG_DONE
Jamal Hadi Salim [Mon, 13 Jun 2016 22:08:42 +0000 (18:08 -0400)]
net sched actions: bug fix dumping actions directly didnt produce NLMSG_DONE

This refers to commands to direct action access as follows:

sudo tc actions add action drop index 12
sudo tc actions add action pipe index 10

And then dumping them like so:
sudo tc actions ls action gact

iproute2 worked because it depended on absence of TCA_ACT_TAB TLV
as end of message.
This fix has been tested with iproute2 and is backward compatible.

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
8 years agoact_ipt: fix a bind refcnt leak
WANG Cong [Mon, 13 Jun 2016 20:44:14 +0000 (13:44 -0700)]
act_ipt: fix a bind refcnt leak

And avoid calling tcf_hash_check() twice.

Fixes: a57f19d30b2d ("net sched: ipt action fix late binding")
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>