Create a common routine for setting the link state for the vnic adapter.
This update moves the sending of the crq and waiting for the link state
response to a common place. The new routine also adds handling of
resending the crq in cases of getting a partial success response.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We should be initializing the stats token in the same place we
initialize the other resources for the driver.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When handling a fatal error in the driver, there can be additional
error information provided by the vios. This information is not
always present, so only retrieve the additional error information
when present.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch addresses a modification in the PAPR+ specification which now
defines a previously reserved value for vNIC capabilities. It indicates
whether the system firmware performs a VLAN header stripping on all VLAN
tagged received frames, in case it does, the behavior expected is for
the ibmvnic driver to be responsible for inserting the VLAN header.
Reported-by: Manvanthara B. Puttashankar <mputtash@in.ibm.com>
Signed-off-by: Murilo Fossa Vicentini <muvic@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Along with 5 TX queues, 5 RX queues are allocated at the beginning of
device probe. However, only the real number of TX queues is set. Configure
the real number of RX queues as well.
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David reported that doing the following:
ip li add red type vrf table 10
ip link set dev eth1 vrf red
ip addr add 127.0.0.1/8 dev red
ip link set dev eth1 up
ip li set red up
ping -c1 -w1 -I red 127.0.0.1
ip li del red
when either policy routing IP rules are present or the local table
lookup ip rule is before the l3mdev lookup results in a hang with
these messages:
unregister_netdevice: waiting for red to become free. Usage count = 1
The problem is caused by caching the dst used for sending the packet
out of the specified interface on a local route with a different
nexthop interface. Thus the dst could stay around until the route in
the table the lookup was done is deleted which may be never.
Address the problem by not forcing output device to be the l3mdev in
the flow's output interface if the lookup didn't use the l3mdev. This
then results in the dst using the right device according to the route.
Changes in v2:
- make the dev_out passed in by __ip_route_output_key_hash correct
instead of checking the nh dev if FLOWI_FLAG_SKIP_NH_OIF is set as
suggested by David.
Fixes: 5f02ce24c2 ("net: l3mdev: Allow the l3mdev to be a loopback")
Reported-by: David Ahern <dsa@cumulusnetworks.com>
Suggested-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: Robert Shearman <rshearma@brocade.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Tested-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mike Maloney says:
====================
packet: Add option to create new fanout group with unique id.
Fanout uses a per net global namespace. A process that intends to create a
new fanout group can accidentally join an existing group. It is
not possible to detect this.
Add a socket option to specify on the first call to
setsockopt(..., PACKET_FANOUT, ...) to ensure that a new group is created.
Also add tests.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Create two groups with PACKET_FANOUT_FLAG_UNIQUEID, add a socket to one.
Ensure that the groups can only be joined if all options are consistent
with the original except for this flag.
Signed-off-by: Mike Maloney <maloney@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fanout uses a per net global namespace. A process that intends to create
a new fanout group can accidentally join an existing group. It is not
possible to detect this.
Add socket option PACKET_FANOUT_FLAG_UNIQUEID. When specified the
supplied fanout group id must be set to 0, and the kernel chooses an id
that is not already in use. This is an ephemeral flag so that
other sockets can be added to this group using setsockopt, but NOT
specifying this flag. The current getsockopt(..., PACKET_FANOUT, ...)
can be used to retrieve the new group id.
We assume that there are not a lot of fanout groups and that this is not
a high frequency call.
The method assigns ids starting at zero and increases until it finds an
unused id. It keeps track of the last assigned id, and uses it as a
starting point to find new ids.
Signed-off-by: Mike Maloney <maloney@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sock_fanout_open no longer sets the size of packet_socket ring, so stop
passing the parameter.
Signed-off-by: Mike Maloney <maloney@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some boards [1] leave the PHYs at an invalid state
during system power-up or reset thus causing unreliability
issues with the PHY which manifests as PHY not being detected
or link not functional. To fix this, these PHYs need to be RESET
via a GPIO connected to the PHY's RESET pin.
Some boards have a single GPIO controlling the PHY RESET pin of all
PHYs on the bus whereas some others have separate GPIOs controlling
individual PHY RESETs.
In both cases, the RESET de-assertion cannot be done in the PHY driver
as the PHY will not probe till its reset is de-asserted.
So do the RESET de-assertion in the MDIO bus driver.
[1] - am572x-idk, am571x-idk, a437x-idk
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We dereference "skb" to get "skb->len" so we should probably do that
step before freeing the skb.
Fixes: eea221ce48 ("tc35815 driver update (take 2)")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stefan Hajnoczi says:
====================
VSOCK: vsockmon virtual device to monitor AF_VSOCK sockets.
v5:
* Change vsock_deliver_tap() API to avoid unnecessary skb creation
[Jorgen]
* Fix skb leak when no taps are registered [Jorgen]
* s/cpu_to_le16(pkt->hdr.op)/le16_to_cpu(pkt->hdr.op)/ [Michael]
* Add af_vsock_tap.c and vsockmon.[ch] to MAINTAINERS
* checkpatch.pl and sparse fixes
v4:
* Add explicit reserved padding field to struct af_vsockmon_hdr and
drop __attribute__((packed)) [Michael, DaveM]
* Call synchronize_net() before module_put() [Michael]
v3:
* Hook virtio_transport.c (guest driver), not just drivers/vhost/vsock.c (host
driver)
* Fix DEFAULT_MTU macro definition [Zhu Yanjun]
* Rename af_vsockmon_hdr->t field ->transport for clarity
* Update .ndo_get_stats64() return type since it has changed
* Include missing <linux/module.h> header in af_vsock_tap.c
This is a continuation of Gerard Garcia's work on the vsockmon packet capture
interface for AF_VSOCK. Packet capture is an essential feature for network
communication. Gerard began addressing this feature gap in his Google Summer
of Code 2016 project. I have cleaned up, rebased, and retested the v2 series
he posted previously.
The design follows the nlmon packet capture interface closely. This is because
vsock has the same problem as netlink: there is no netdev on which packets can
be captured. The nlmon driver is a synthetic netdev purely for the purpose of
enabling packet capture. We follow the same approach here with vsockmon.
See include/uapi/linux/vsockmon.h in this series for details on the packet
layout.
How to try it:
1. Build tcpdump with vsockmon patches:
$ git clone -b vsock https://github.com/stefanha/libpcap
$ (cd libcap && ./configure && make)
$ git clone -b vsock https://github.com/stefanha/tcpdump
$ (cd tcpdump && ./configure && make)
2. Build nc-vsock (a netcat-like tool):
$ git clone https://github.com/stefanha/nc-vsock
$ (cd nc-vsock && make)
3. Launch a virtual machine:
# modprobe vhost_vsock
# qemu-system-x86_64 -M accel=kvm -m 1024 -cpu host \
-drive if=virtio,file=test.img,format=raw \
-device vhost-vsock-pci,guest-cid=3
(Assumes guest is running a kernel with this patch)
4. Capture AF_VSOCK traffic in guest and/or host:
# modprobe vsockmon
# ip link add type vsockmon
# ip link set vsockmon0 up
# tcpdump -i vsockmon0 -vvv
5. Communicate!
(host)$ nc-vsock -l 1234
(guest)$ nc-vsock 2 1234
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The virtio drivers deal with struct virtio_vsock_pkt. Add
virtio_transport_deliver_tap_pkt(pkt) for handing packets to the
vsockmon device.
We call virtio_transport_deliver_tap_pkt(pkt) from
net/vmw_vsock/virtio_transport.c and drivers/vhost/vsock.c instead of
common code. This is because the drivers may drop packets before
handing them to common code - we still want to capture them.
Signed-off-by: Gerard Garcia <ggarcia@deic.uab.cat>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add vsockmon virtual network device that receives packets from the vsock
transports and exposes them to user space.
Based on the nlmon device.
Signed-off-by: Gerard Garcia <ggarcia@deic.uab.cat>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add tap functions that can be used by the vsock transports to
deliver packets to vsockmon virtual network devices.
Signed-off-by: Gerard Garcia <ggarcia@deic.uab.cat>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Quite a lot of patches for rtlwifi and iwlwifi this time, but changes
also for other active wireless drivers.
Major changes:
ath9k
* add support for Dell Wireless 1601 PCI device
* add debugfs file to manually override noise floor
ath10k
* bump up FW API to 6 for a new QCA6174 firmware branch
wil6210
* support 8 kB RX buffers
iwlwifi
* work to support A000 devices continues
* add support for FW API 30
* add Geographical and Dynamic Specific Absorption Rate (SAR) support
* support a few new PCI device IDs
rtlwifi
* work on adding Bluetooth coexistance support, not finished yet
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Merge tag 'wireless-drivers-next-for-davem-2017-04-21' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
wireless-drivers-next patches for 4.12
Quite a lot of patches for rtlwifi and iwlwifi this time, but changes
also for other active wireless drivers.
Major changes:
ath9k
* add support for Dell Wireless 1601 PCI device
* add debugfs file to manually override noise floor
ath10k
* bump up FW API to 6 for a new QCA6174 firmware branch
wil6210
* support 8 kB RX buffers
iwlwifi
* work to support A000 devices continues
* add support for FW API 30
* add Geographical and Dynamic Specific Absorption Rate (SAR) support
* support a few new PCI device IDs
rtlwifi
* work on adding Bluetooth coexistance support, not finished yet
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sudarsana Reddy Kalluru says:
====================
qed*: Dcbx/dcbnl enhancements.
The series has set of enhancements for dcbx/dcbnl implementation of
qed/qede drivers.
- Patches (1) & (3) capture the sematic and debug changes.
- Patch (2) adds the driver support for populating RoCEv2 dcb data.
- Patch (4) adds the required support for reading/configuring the
IEEE selection field (SF).
- Patch (5) adds the support for configuring the static dcbx mode.
Please consider applying this to 'net-next' branch.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The patch adds driver support for static/local dcbx mode. In this mode
adapter brings up the dcbx link with locally configured parameters
instead of performing the dcbx negotiation with the peer. The feature
is useful when peer device/switch doesn't support dcbx.
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In the older firmware there was no distinction between RoCE and RoCEv2
whereas the newer firmware (8.15.3.0) allows us to configure each
independently. Driver need to populate the RoCEv2 data in its specific
structure.
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We have observed a sudden spike in rx/tx_packets and rx/tx_bytes
reported under /proc/net/dev. There is a race in mlx5e_update_stats()
and some of the get-stats functions (the one that we hit is the
mlx5e_get_stats() which is called by ndo_get_stats64()).
In particular, the very first thing mlx5e_update_sw_counters()
does is 'memset(s, 0, sizeof(*s))'. For example, if mlx5e_get_stats()
is unlucky at one point, rx_bytes and rx_packets could be 0. One second
later, a normal (and much bigger than 0) value will be reported.
This patch is to use a 'struct mlx5e_sw_stats temp' to avoid
a direct memset zero on priv->stats.sw.
mlx5e_update_vport_counters() has a similar race. Hence, addressed
together. However, memset zero is removed instead because
it is not needed.
I am lucky enough to catch this 0-reset in rx multicast:
eth0: 41457665 76804 70 0 0 70 0 47085 15586634 87502 3 0 0 0 3 0
eth0: 41459860 76815 70 0 0 70 0 47094 15588376 87516 3 0 0 0 3 0
eth0: 41460577 76822 70 0 0 70 0 0 15589083 87521 3 0 0 0 3 0
eth0: 41463293 76838 70 0 0 70 0 47108 15595872 87538 3 0 0 0 3 0
eth0: 41463379 76839 70 0 0 70 0 47116 15596138 87539 3 0 0 0 3 0
v2: Remove memset zero from mlx5e_update_vport_counters()
v1: Use temp and memcpy
Fixes: 9218b44dcc ("net/mlx5e: Statistics handling refactoring")
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Suggested-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Kirsher says:
====================
1GbE Intel Wired LAN Driver Updates 2017-04-20
This series contains updates to e1000, e1000e, igb/vf and ixgb.
Tobias Klauser cleans up e1000, ixgb and igbvf from having a local
function or structure for netdev stats.
Bernd Faust fixes an issue for 82579 devices, where the clock frequency
was being incorrectly set for these devices. These devices only support
96MHz, so make sure they are set to use only that.
Yury Kylulin extends the work Jake and Alex did for ixgbe in MAC filter
handling into the igb driver.
Kim Tatt Chuah enables igb to wake up by packet and to read the necessary
Wake Up Status (WUS) and Wake Up Packet Memory (WUPM) registers.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
- More O_TMPFILE fallout
- RENAME_WHITEOUT regression due to a mis-merge
- Memory leak in ubifs_mknod()
- Power-cut problem in UBI's update volume feature
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Merge tag 'upstream-4.11-rc7' of git://git.infradead.org/linux-ubifs
Pull UBI/UBIFS fixes from Richard Weinberger:
"This contains fixes for issues in both UBI and UBIFS:
- more O_TMPFILE fallout
- RENAME_WHITEOUT regression due to a mis-merge
- memory leak in ubifs_mknod()
- power-cut problem in UBI's update volume feature"
* tag 'upstream-4.11-rc7' of git://git.infradead.org/linux-ubifs:
ubifs: Fix O_TMPFILE corner case in ubifs_link()
ubifs: Fix RENAME_WHITEOUT support
ubifs: Fix debug messages for an invalid filename in ubifs_dump_inode
ubifs: Fix debug messages for an invalid filename in ubifs_dump_node
ubifs: Remove filename from debug messages in ubifs_readdir
ubifs: Fix memory leak in error path in ubifs_mknod
ubi/upd: Always flush after prepared for an update
update the list and remove 'in the future' statement,
since all still alive 64-bit architectures now do eBPF JIT.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull RAS fix from Thomas Gleixner:
"The MCE atomic notifier callchain invokes callbacks which might sleep.
Convert it to a blocking notifier and prevent calls from atomic
context"
* 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Make the MCE notifier a blocking one
Pull irq fix from Thomas Gleixner:
"The (hopefully) final fix for the irq affinity spreading logic"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/affinity: Fix calculating vectors to assign
This is an eBPF JIT for sparc64. All major features are supported.
All tests under tools/testing/selftests/bpf/ pass.
Signed-off-by: David S. Miller <davem@davemloft.net>
Handler for ETHTOOL_GRXCLSRLALL must set info->data to the size
of the table, regardless of the amount of entries in it.
Existing code does not do that, and this breaks all usage of ethtool -N
or -n without explicit location, with this error:
rmgr: Invalid RX class rules table size: Success
Set info->data to the table size.
Tested:
ethtool -n ens8
ethtool -N ens8 flow-type ip4 src-ip 1.1.1.1 dst-ip 2.2.2.2 action 1
ethtool -N ens8 flow-type ip4 src-ip 1.1.1.1 dst-ip 2.2.2.2 action 1 loc 55
ethtool -n ens8
ethtool -N ens8 delete 1023
ethtool -N ens8 delete 55
Fixes: f913a72aa0 ("net/mlx5e: Add support to get ethtool flow rules")
Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
RX packet headers are meant to be contained in SKB linear part,
and chose a threshold of 128.
It turns out this is not enough, i.e. for IPv6 packet over VxLAN.
In this case, UDP/IPv4 needs 42 bytes, GENEVE header is 8 bytes,
and 86 bytes for TCP/IPv6. In total 136 bytes that is more than
current 128 bytes. In this case expand header flow is reached.
The warning in skb_try_coalesce() caused by a wrong truesize
was already fixed here:
commit 158f323b98 ("net: adjust skb->truesize in pskb_expand_head()").
Still, we prefer to totally avoid the expand header flow for performance reasons.
Tested regular TCP_STREAM with iperf for 1 and 8 streams, no degradation was found.
Fixes: 461017cb00 ("net/mlx5e: Support RX multi-packet WQE (Striding RQ)")
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
When UAR is released, we deallocate the device resource, but
don't unmmap the UAR mapping memory.
Fix the leak by unmapping this memory.
Fixes: a6d51b6861 ('net/mlx5: Introduce blue flame register allocator)
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Otherwise the code that fills the ipv6 encapsulation headers could be writing
beyond the allocated headers buffer.
Fixes: ce99f6b97f ('net/mlx5e: Support SRIOV TC encapsulation offloads for IPv6 tunnels')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Otherwise the code that fills the ipv4 encapsulation headers could be writing
beyond the allocated headers buffer.
Fixes: a54e20b4fc ('net/mlx5e: Add basic TC tunnel set action for SRIOV offloads')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
On ConnectX5 the wqe inline mode is "none" and hence the FW
reports MLX5_CAP_INLINE_MODE_NOT_REQUIRED.
Fix our devlink callbacks to deal with that on get and set.
Also fix the tc flow parsing code not to fail anything when
inline isn't required.
Fixes: bffaa91658 ('net/mlx5: E-Switch, Add control for inline mode')
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
If FW is stuck in initializing state we will skip the driver load, but
current error handling flow doesn't clean previously allocated command
interface resources.
Fixes: e3297246c2 ('net/mlx5_core: Wait for FW readiness on startup')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Fix sparse warning about missing prototypes. The rx/tx code path
defines functions with prototypes in ipoib.h.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Fix sparse warnings in recent ipoib support.
The RDMA functions are not used yet, hide behind #ifdef.
Based on comment, they will eventually be local so make static.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Implement the devlink e-switch encapsulation control set and get
callbacks. Apply the value set by the user on the switchdev offloads
mode when creating the fast FDB table where offloaded rules will be set.
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Refactor the creation of the fast path FDB table that holds the
offloaded rules in SRIOV switchdev mode into it's own function.
This will be used in the next patch to be able and re-create the
table under different settings without going through legacy mode.
This patch doesn't change any functionality.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This is an e-switch global knob to enable HW support for applying
encapsulation/decapsulation to VF traffic as part of SRIOV e-switch offloading.
The actual encap/decap is carried out (along with the matching and other actions)
per offloaded e-switch rules, e.g as done when offloading the TC tunnel key action.
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Ensure that HCI_UART_PROTO_READY is cleared before close(hu) is
called which closes the Data Link protocol layer.
Therefore, add the missing bit clear of HCI_UART_PROTO_READY to
hci_uart_init_work() so that the flag is cleared when
hci_register_dev fails.
Without the fix, the functions of the Data Link protocol layer could
potentially be accessed after that layer has been closed. This
could lead to a crash as memory would have been freed in that layer.
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
When hci_register_dev() fails, hu->hdev should be set to NULL before
freeing hdev. This avoids potential use of hu->hdev after it has been
freed.
This commit sets hu->hdev to NULL before calling hci_free_dev() in error
handling scenarios in hci_uart_init_work() and hci_uart_register_dev().
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
If hci_register_dev() returns an error in hci_uart_init_work()
then the HCI_UART_REGISTERED bit gets erroneously set due to
a missing return statement. Therefore, add the missing return
statement.
The consequence of the missing return is that the HCI UART is not
registered but HCI_UART_REGISTERED is set which allows the code
to think that hu->hdev is safe to access but hu->hdev has been
freed so could lead to a crash.
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Nathan Fontenot
Murilo Fossa Vicentini
Thomas Falcon
Robert Shearman
David S. Miller
Mike Maloney
Roger Quadros
Dan Carpenter
Gerard Garcia
sudarsana.kalluru@cavium.com
Martin KaFai Lau
Linus Torvalds
Alexei Starovoitov
Ilan Tayari
Eugenia Emantayev
Maor Gottlieb
Or Gerlitz
Mohamad Haj Yahia
Stephen Hemminger
Roi Dayan
Dean Jenkins