====================
nfp: protect from theoretical size overflows and SR-IOV errors
This small set changes the handling of pci_sriov_set_totalvfs() errors.
nfp is the only driver which fails probe on pci_sriov_set_totalvfs()
errors. It turns out some BIOS configurations may break SR-IOV and
users who don't use that feature should not suffer.
Remaining patches makes sure we use overflow-safe function for ring
allocation, even though ring sizes are limited. It won't hurt and
we can also enable fallback to vmalloc() if memory is tight while
at it.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 26 Jul 2018 02:40:37 +0000 (19:40 -0700)]
nfp: protect from theoretical size overflows on HW descriptor ring
Use array_size() and store the size as full size_t to protect from
theoretical size overflow when handling HW descriptor rings.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 26 Jul 2018 02:40:36 +0000 (19:40 -0700)]
nfp: restore correct ordering of fields in rx ring structure
Commit 7f1c684a8966 ("nfp: setup xdp_rxq_info") mixed the cache
cold and cache hot data in the nfp_net_rx_ring structure (ignoring
the feedback), to try to fit the structure into 2 cache lines
after struct xdp_rxq_info was added. Now that we are about to add
a new field the structure will grow back to 3 cache lines, so
order the members correctly.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 26 Jul 2018 02:40:35 +0000 (19:40 -0700)]
nfp: use kvcalloc() to allocate SW buffer descriptor arrays
Use kvcalloc() instead of tmp variable + kzalloc() when allocating
SW buffer information to allow falling back to vmalloc and to protect
from theoretical integer overflow.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 26 Jul 2018 02:40:34 +0000 (19:40 -0700)]
nfp: don't fail probe on pci_sriov_set_totalvfs() errors
On machines with buggy ACPI tables or when SR-IOV is already enabled
we may not be able to set the SR-IOV VF limit in sysfs, it's not fatal
because the limit is imposed by the driver anyway. Only the sysfs
'sriov_totalvfs' attribute will be too high. Print an error to inform
user about the failure but allow probe to continue.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
mlxsw: Introduce algorithmic TCAM support
The Spectrum-2 ASIC uses an algorithmic TCAM (A-TCAM) where multiple
exact matches lookups are performed instead of a single lookup as with
standard circuit TCAM (C-TCAM) memory. This allows for higher scale and
reduced power consumption.
The lookups are performed by masking a packet using different masks
(e.g., {dst_ip/24, ethtype}) defined for the region and looking for an
exact match. Eventually, the rule with the highest priority will be
picked.
Since the number of masks per-region is limited, the ASIC includes a
C-TCAM that can be used as a spill area for rules that do not fit into
the A-TCAM.
The driver currently uses a C-TCAM only mode which is similar to
Spectrum-1. However, this mode severely limits both the number of
supported ACL rules and the performance of the ACL lookup.
This patch set introduces initial support for the A-TCAM mode where the
C-TCAM is only used for rule spillage.
The first five patches add the registers and ASIC resources needed in
order to make use of the A-TCAM.
Next three patches are the "meat" and add the eRP core which is used to
manage the masks used by each ACL region. The individual commit messages
are lengthy and aim to thoroughly explain the subject.
The next seven patches perform small adjustments in the code and the
related data structures and are meant to prepare the code base to the
introduction of the A-TCAM in the last two patches.
Various A-TCAM optimization will be the focus of follow-up patch sets:
* Pruning - Used to reduce the number of lookups. Each rule will include
a prune vector that indicates which masks should not be considered for
further lookups as they cannot result in a higher priority match
* Bloom filter - Used to reduce the number of lookups. Before performing
a lookup with a given mask the ASIC will consult a bloom filter
(managed by the driver) that indicates whether a match might exist using
the considered mask
* Masks aggregation - Used to increase scale and reduce lookups. Masks
that only differ by up to eight consecutive bits (delta bits) can be
aggregated into a single mask. The delta bits then become a part of the
rule's key. For example, dst_ip/16 and dst_ip/17 can be represented as
dst_ip/16 with a delta bit of one. Rules using the aggregated mask then
specify whether the 17-th bit should be masked or not and its value
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that all the pieces are in place we can start using the A-TCAM
instead of only using the C-TCAM. This allows for much higher scale and
better performance (to be improved further by follow-up patch sets).
Perform the integration with the A-TCAM and the eRP core by reverting
the changes introduced by "mlxsw: spectrum_acl: Enable C-TCAM only mode
in eRP core" and add calls from the C-TCAM code into the eRP core.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mlxsw: spectrum_acl: Add A-TCAM rule insertion and deletion
Implement rule insertion and deletion into the A-TCAM before we flip the
driver to start using the A-TCAM.
Rule insertion into the A-TCAM is very similar to C-TCAM, but there are
subtle differences between regions of different sizes (i.e., different
number of key blocks).
Specifically, as explained in "mlxsw: spectrum_acl: Allow encoding a
partial key", in 12 key blocks regions a rule is split into two and the
two halves of the rule are linked using a "large entry key ID".
Such differences are abstracted away by using different region
operations per region type.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mlxsw: spectrum_acl: Pass C-TCAM region and entry to insert function
When A-TCAM will be used together with C-TCAM, the C-TCAM code will need
to call into the eRP core in order to get an eRP for an inserted entry.
The eRP core takes an A-TCAM region as one of its arguments, so pass the
C-TCAM region to the insertion function which will later allow us to
derive the A-TCAM region, given it contains the C-TCAM one.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mlxsw: spectrum_acl: Encapsulate C-TCAM region in A-TCAM region
In Spectrum-2 the C-TCAM is only used for rules that can't fit in the
A-TCAM due to a limited number of masks per A-TCAM region.
In addition, rules inserted into the C-TCAM may affect rules residing in
the A-TCAM, by clearing their C-TCAM prune bit.
The two regions are thus closely related and can be thought of as if the
C-TCAM region is encapsulated in the A-TCAM one.
Change the data structures to reflect that before introducing A-TCAM
support and make C-TCAM region initialization part of the A-TCAM region
initialization sequence.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Initialize the A-TCAM as part of the driver's initialization routine.
Specifically, initialize the eRP tables so that A-TCAM regions will be
able to perform allocations of eRP tables upon rule insertion in
subsequent patches.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
When working with 12 key blocks in the A-TCAM, rules are split into two
records, which constitute two lookups. The two records are linked using
a "large entry key ID". The ID is assigned to key blocks 6 to 11 and
resolved during the first lookup. The second lookup is performed using
the ID and the remaining key blocks.
Allow encoding a partial key so that it can be later used to check if an
ID can be reused.
This is done by adding two arguments to the existing encode function
that specify the range of the block indexes we would like to encode. The
key and mask arguments become optional, as we will not need to encode
both of them all the time.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The number of eRPs that can be used by a single A-TCAM region is limited
to 16. When more eRPs are needed, an ordinary circuit TCAM (C-TCAM) can
be used to hold the extra eRPs.
Unlike the A-TCAM, only a single (last) lookup is performed in the
C-TCAM and not a lookup per-eRP. However, modeling the C-TCAM as extra
eRPs will allow us to easily introduce support for pruning in a
follow-up patch set and is also logically correct.
The following diagram depicts the relation between both TCAMs:
C-TCAM
+-------------------+ +--------------------+ +-----------+
| | | | | |
| eRP #1 (A-TCAM) +----> ... +----+ eRP #16 (A-TCAM) +----+ eRP #17 |
| | | | | ... |
+-------------------+ +--------------------+ | eRP #N |
| |
+-----------+
Lookup order is from left to right.
Extend the eRP core APIs with a C-TCAM parameter which indicates whether
the requested eRP is to be used with the C-TCAM or not.
Since the C-TCAM is only meant to absorb rules that can't fit in the
A-TCAM due to exceeded number of eRPs or key collision, an error is
returned when a C-TCAM eRP needs to be created when the eRP state
machine is in its initial state (i.e., 'no masks'). This should only
happen in the face of very unlikely errors when trying to push rules
into the A-TCAM.
In order not to perform unnecessary lookups, the eRP core will only
enable a C-TCAM lookup for a given region if it knows there are C-TCAM
eRPs present.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mlxsw: spectrum_acl: Enable C-TCAM only mode in eRP core
Currently, no calls are performed into the eRP core, but in order to
make review easier we would like to gradually add these calls.
Have the eRP core initialize a region's master mask to all ones and
allow it to use an empty eRP table. This directs the lookup to the
C-TCAM and allows the C-TCAM only mode to continue working.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
When rules are inserted into the A-TCAM they are associated with a mask,
which is part of the lookup key: { masked key, mask ID, region ID }.
These masks are called rule patterns (RP) and the aggregation of several
masks into one (to be introduced in follow-up patch sets) is called an
extended RP (eRP).
When a packet undergoes a lookup in an ACL region it is masked by the
current set of eRPs used by the region, looking for an exact match.
Eventually, the rule with the highest priority is picked.
These eRPs are stored in several global banks to allow for lookup to
occur using several eRPs simultaneously.
At first, an ACL region will only require a single mask - upon the
insertion of the first rule. In this case, the region can use the
"master RP" which is composed by OR-ing all the masks used by the
region. This mask is a property of the region and thus there is no need
to use the above mentioned banks.
At some point, a second mask will be needed. In this case, the region
will need to allocate an eRP table from the above mentioned banks and
insert its masks there.
>From now on, upon lookup, the eRP table used by the region will be
fetched from the eRP banks - using {eRP bank, Index within the bank} -
and the eRPs present in the table will be used to mask the packet. Note
that masks with consecutive indexes are inserted into consecutive banks.
When rules are deleted and a region only needs a single mask once again
it can free its eRP table and use the master RP.
The above logic is implemented in the eRP core and represented using the
following state machine:
+------------+ create mask - as master RP +---------------+
| +--------------------------------> |
| no masks | | single mask |
| <--------------------------------+ |
+------------+ delete mask +-----+--^------+
| |
| |
create mask - | | delete mask -
create mask transition to use eRP | | transition to
+--------+ table | | use master RP
| | | |
| | | |
+----v--------+----+ create mask +----v--+-----+
| <-------------------------------+ |
| multiple masks | | two masks |
| +-------------------------------> |
+------------------+ delete mask - if two +-------------+
remaining
The code that actually configures rules in the A-TCAM will interface
with the eRP core by getting or putting an eRP based on the required
mask used by the rule.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Add the following resources to be used by A-TCAM code:
* Maximum number of eRP banks
* Maximum size of eRP bank
* Number of eRP entries required for a 2/4/8/12 key blocks mask
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mlxsw: reg: Prepare PERERP register for A-TCAM usage
Before introducing A-TCAM support we need to make sure all the necessary
fields are configurable and not hard coded to values that worked for the
C-TCAM only use case.
This includes - for example - the ability to configure the eRP table
used by the TCAM region.
Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/microchip/lan743x_main.c:2944:25: warning:
symbol 'lan743x_pm_ops' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Bryan Whitehead <Bryan.Whitehead@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jianbo Liu [Wed, 25 Jul 2018 02:31:25 +0000 (02:31 +0000)]
net/sched: cls_flower: Use correct inline function for assignment of vlan tpid
This fixes the following sparse warning:
net/sched/cls_flower.c:1356:36: warning: incorrect type in argument 3 (different base types)
net/sched/cls_flower.c:1356:36: expected unsigned short [unsigned] [usertype] value
net/sched/cls_flower.c:1356:36: got restricted __be16 [usertype] vlan_tpid
Signed-off-by: Jianbo Liu <jianbol@mellanox.com> Reported-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Allow obtaining MTTs starting at any index,
thus give a better cache utilization.
For this, allow setting log_mtts_per_seg to 0, and use
this in default.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Anaty Rahamim Bar Kat <anaty@mellanox.com> Reviewed-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
Or Gerlitz [Tue, 24 Jul 2018 10:59:33 +0000 (13:59 +0300)]
net/mlx5e: Use ttl from route lookup on tc encap offload only if needed
Currnetly, the ttl for the encapsulation headers is taken from the
route lookup result. As a pre-step to allow for an offload case when
the user specifies the ttl, take it from the route lookup only if
not zero. While here, also move to use u8 instead int for the ttl.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: ethernet: fs-enet: Use generic CRC32 implementation
Use generic kernel CRC32 implementation because it:
1. Should be faster (uses lookup tables),
2. Removes duplicated CRC generation code,
3. Uses well-proven algorithm instead of coding it one more time.
Suggested-by: Eric Biggers <ebiggers3@gmail.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
net: ethernet: freescale: Use generic CRC32 implementation
Use generic kernel CRC32 implementation because it:
1. Should be faster (uses lookup tables),
2. Removes duplicated CRC generation code,
3. Uses well-proven algorithm instead of coding it one more time.
Suggested-by: Eric Biggers <ebiggers3@gmail.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
genphy_config_aneg() should be called only by PHYs that implement
the Clause 22 register set. Prevent Clause 45 PHYs that don't implement
the register set from calling the genphy function.
Signed-off-by: Camelia Groza <camelia.groza@nxp.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 25 Jul 2018 19:53:38 +0000 (12:53 -0700)]
Merge branch 'virtio_net-Add-ethtool-stat-items'
Toshiaki Makita says:
====================
virtio_net: Add ethtool stat items
Add some ethtool stat items useful for performance analysis.
====================
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Add counters below:
* Tx
- xdp_tx: frames sent by ndo_xdp_xmit or XDP_TX.
- xdp_tx_drops: dropped frames out of xdp_tx ones.
* Rx
- xdp_packets: frames went through xdp program.
- xdp_tx: XDP_TX frames.
- xdp_redirects: XDP_REDIRECT frames.
- xdp_drops: any dropped frames out of xdp_packets ones.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
Since when XDP was introduced, drop counter has been able to be updated
much more frequently than before, as XDP_DROP increments the counter.
Thus for performance analysis per-queue drop counter would be useful.
Also this avoids cache contention and race on updating the counter. It
is currently racy because napi handlers read-modify-write it without any
locks.
There are more counters in dev->stats that are racy, but I left them
per-device, because they are rarely updated and does not worth being
per-queue counters IMHO. To fix them we need atomic ops or some kind of
locks.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
virtio_net: Use temporary storage for accounting rx stats
The purpose is to keep receive_buf arguments simple when more per-queue
counter items are added later.
Also XDP_TX related sq counters will be updated in the following changes
so create a container struct virtnet_rx_stats which will includes both
rq and sq statistics. For now it only covers rq stats.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
virtio_net: Fix incosistent received bytes counter
When received packets are dropped in virtio_net driver, received packets
counter is incremented but bytes counter is not.
As a result, for instance if we drop all packets by XDP, only received
is counted and bytes stays 0, which looks inconsistent.
IMHO received packets/bytes should be counted if packets are produced by
the hypervisor, like what common NICs on physical machines are doing.
So fix the bytes counter.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
Merge tag 'mips_fixes_4.18_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Paul Burton:
"A couple more MIPS fixes for 4.18:
- Fix an off-by-one in reporting PCI resource sizes to userland which
regressed in v3.12.
- Fix writes to DDR controller registers used to flush write buffers,
which regressed with some refactoring in v4.2"
* tag 'mips_fixes_4.18_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: ath79: fix register address in ath79_ddr_wb_flush()
MIPS: Fix off-by-one in pci_resource_to_user()
1) Handle stations tied to AP_VLANs properly during mac80211 hw
reconfig. From Manikanta Pubbisetty.
2) Fix jump stack depth validation in nf_tables, from Taehee Yoo.
3) Fix quota handling in aRFS flow expiration of mlx5 driver, from Eran
Ben Elisha.
4) Exit path handling fix in powerpc64 BPF JIT, from Daniel Borkmann.
5) Use ptr_ring_consume_bh() in page pool code, from Tariq Toukan.
6) Fix cached netdev name leak in nf_tables, from Florian Westphal.
7) Fix memory leaks on chain rename, also from Florian Westphal.
8) Several fixes to DCTCP congestion control ACK handling, from Yuchunk
Cheng.
9) Missing rcu_read_unlock() in CAIF protocol code, from Yue Haibing.
10) Fix link local address handling with VRF, from David Ahern.
11) Don't clobber 'err' on a successful call to __skb_linearize() in
skb_segment(). From Eric Dumazet.
12) Fix vxlan fdb notification races, from Roopa Prabhu.
13) Hash UDP fragments consistently, from Paolo Abeni.
14) If TCP receives lots of out of order tiny packets, we do really
silly stuff. Make the out-of-order queue ending more robust to this
kind of behavior, from Eric Dumazet.
15) Don't leak netlink dump state in nf_tables, from Florian Westphal.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (76 commits)
net: axienet: Fix double deregister of mdio
qmi_wwan: fix interface number for DW5821e production firmware
ip: in cmsg IP(V6)_ORIGDSTADDR call pskb_may_pull
bnx2x: Fix invalid memory access in rss hash config path.
net/mlx4_core: Save the qpn from the input modifier in RST2INIT wrapper
r8169: restore previous behavior to accept BIOS WoL settings
cfg80211: never ignore user regulatory hint
sock: fix sg page frag coalescing in sk_alloc_sg
netfilter: nf_tables: move dumper state allocation into ->start
tcp: add tcp_ooo_try_coalesce() helper
tcp: call tcp_drop() from tcp_data_queue_ofo()
tcp: detect malicious patterns in tcp_collapse_ofo_queue()
tcp: avoid collapses in tcp_prune_queue() if possible
tcp: free batches of packets in tcp_prune_ofo_queue()
ip: hash fragments consistently
ipv6: use fib6_info_hold_safe() when necessary
can: xilinx_can: fix power management handling
can: xilinx_can: fix incorrect clear of non-processed interrupts
can: xilinx_can: fix RX overflow interrupt not being enabled
can: xilinx_can: keep only 1-2 frames in TX FIFO to fix TX accounting
...
qmi_wwan: fix interface number for DW5821e production firmware
The original mapping for the DW5821e was done using a development
version of the firmware. Confirmed with the vendor that the final
USB layout ends up exposing the QMI control/data ports in USB
config #1, interface #0, not in interface #1 (which is now a HID
interface).
Fixes: e7e197edd09c25 ("qmi_wwan: add support for the Dell Wireless 5821e module") Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
This logic and its ipv4 counterpart read the destination port from
the packet at skb_transport_offset(skb) + 4.
With MSG_MORE and a local SOCK_RAW sender, syzbot was able to cook a
packet that stores headers exactly up to skb_transport_offset(skb) in
the head and the remainder in a frag.
Call pskb_may_pull before accessing the pointer to ensure that it lies
in skb head.
bnx2x: Fix invalid memory access in rss hash config path.
Rx hash/filter table configuration uses rss_conf_obj to configure filters
in the hardware. This object is initialized only when the interface is
brought up.
This patch adds driver changes to configure rss params only when the device
is in opened state. In port disabled case, the config will be cached in the
driver structure which will be applied in the successive load path.
Please consider applying it to 'net' branch.
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jack Morgenstein [Tue, 24 Jul 2018 11:27:55 +0000 (14:27 +0300)]
net/mlx4_core: Save the qpn from the input modifier in RST2INIT wrapper
Function mlx4_RST2INIT_QP_wrapper saved the qp number passed in the qp
context, rather than the one passed in the input modifier.
However, the qp number in the qp context is not defined as a
required parameter by the FW. Therefore, drivers may choose to not
specify the qp number in the qp context for the reset-to-init transition.
Thus, we must save the qp number passed in the command input modifier --
which is always present. (This saved qp number is used as the input
modifier for command 2RST_QP when a slave's qp's are destroyed).
Fixes: c82e9aa0a8bc ("mlx4_core: resource tracking for HCA resources used by guests") Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Skbprio (SKB Priority Queue) is a queueing discipline that prioritizes packets
according to their skb->priority field. Under congestion, already-enqueued lower
priority packets will be dropped to make space available for higher priority
packets. Skbprio was conceived as a solution for denial-of-service defenses that
need to route packets with different priorities as a means to overcome DoS
attacks.
v5
*Do not reference qdisc_dev(sch)->tx_queue_len for setting limit. Instead set
default sch->limit to 64.
v4
*Drop Documentation/networking/sch_skbprio.txt doc file to move it to tc man
page for Skbprio, in iproute2.
v3
*Drop max_limit parameter in struct skbprio_sched_data and instead use
sch->limit.
*Reference qdisc_dev(sch)->tx_queue_len only once, during initialisation for
qdisc (previously being referenced every time qdisc changes).
*Move qdisc's detailed description from in-code to Documentation/networking.
*When qdisc is saturated, enqueue incoming packet first before dequeueing
lowest priority packet in queue - improves usage of call stack registers.
*Introduce and use overlimit stat to keep track of number of dropped packets.
v2
*Use skb->priority field rather than DS field. Rename queueing discipline as
SKB Priority Queue (previously Gatekeeper Priority Queue).
*Queueing discipline is made classful to expose Skbprio's internal priority
queues.
Signed-off-by: Nishanth Devarajan <ndev2021@gmail.com> Reviewed-by: Sachin Paryani <sachin.paryani@gmail.com> Reviewed-by: Cody Doucette <doucette@bu.edu> Reviewed-by: Michel Machado <michel@digirati.com.br> Acked-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Certain PHY's have issues when operating in GBit slave mode and can
be forced to master mode. Examples are RTL8211C, also the Micrel PHY
driver has a DT setting to force master mode.
If two such chips are link partners the autonegotiation will fail.
Standard defines a self-clearing on read, latched-high bit to
indicate this error. Check this bit to inform the user.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 24 Jul 2018 21:10:43 +0000 (14:10 -0700)]
Merge branch 'net-whitespace-cleanups'
Stephen Hemminger says:
====================
net whitespace cleanups
Ran script that I use to check for trailing whitespace and
blank lines at end of files across all files in net/ directory.
These are errors that checkpatch reports and git flags.
These are the resulting fixes broken up mostly by subsystem.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
r8169: restore previous behavior to accept BIOS WoL settings
Commit 7edf6d314cd0 tried to resolve an inconsistency (BIOS WoL
settings are accepted, but device isn't wakeup-enabled) resulting
from a previous broken-BIOS workaround by making disabled WoL the
default.
This however had some side effects, most likely due to a broken BIOS
some systems don't properly resume from suspend when the MagicPacket
WoL bit isn't set in the chip, see
https://bugzilla.kernel.org/show_bug.cgi?id=200195
Therefore restore the WoL behavior from 4.16.
Reported-by: Albert Astals Cid <aacid@kde.org> Fixes: 7edf6d314cd0 ("r8169: disable WOL per default") Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: remove redundant input checks in SIOCSIFTXQLEN case of dev_ifsioc
The cited patch added a call to dev_change_tx_queue_len in
SIOCSIFTXQLEN case.
This obsoletes the new len comparison check done before the function call.
Remove it here.
For the desicion of keep/remove the negative value check, we examine the
range check in dev_change_tx_queue_len.
On 64-bit we will fail with -ERANGE. The 32-bit int ifr_qlen will be sign
extended to 64-bits when it is passed into dev_change_tx_queue_len(). And
then for negative values this test triggers:
if (new_len != (unsigned int)new_len)
return -ERANGE;
because:
if (0xffffffffWHATEVER != 0x00000000WHATEVER)
On 32-bit the signed value will be accepted, changing behavior.
Therefore, the negative value check is kept.
Fixes: 3f76df198288 ("net: use dev_change_tx_queue_len() for SIOCSIFTXQLEN") Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com> Cc: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fix from Martin Schwidefsky.
Guenter Roeck reports that the s390 allmodconfig build fails because of
a gcc plugin problem. The fix won't be in-tree until 4.19, so for now
disable the gcc plugins on s390.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: disable gcc plugins
media: staging: omap4iss: Include asm/cacheflush.h after generic includes
Including asm/cacheflush.h first results in the following build error
when trying to build sparc32:allmodconfig, because 'struct page' has not
been declared, and the function declaration ends up creating a separate
(private) declaration of struct page (as a result of function arguments
being in the scope of the function declaration and definition, not in
global scope).
The C scoping rules do not just affect variable visibility, they also
affect type declaration visibility.
The end result is that when the actual call site is seen in
<linux/highmem.h>, the 'struct page' type in the caller is not the same
'struct page' that the function was declared with, resulting in:
In file included from arch/sparc/include/asm/page.h:10:0,
...
from drivers/staging/media/omap4iss/iss_video.c:15:
include/linux/highmem.h: In function 'clear_user_highpage':
include/linux/highmem.h:137:31: error:
passing argument 1 of 'sparc_flush_page_to_ram' from incompatible
pointer type
Include generic includes files first to fix the problem.
Fixes: fc96d58c10162 ("[media] v4l: omap4iss: Add support for OMAP4 camera interface - Video devices") Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: David S. Miller <davem@davemloft.net> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[ Added explanation of C scope rules - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
====================
cxgb4: collect free Tx/Rx pages and page pointers
Patch 1 collects number of free PSTRUCT page pointers in context
memory.
Patch 2 moves the collection logic for Tx/Rx free pages to common
code, since this information needs to be collected in vmcore device
dump as well.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
cxgb4: move Tx/Rx free pages collection to common code
This information needs to be collected in vmcore device dump as well.
So, move to common code.
Fixes: fa145d5dfd61 ("cxgb4: display number of rx and tx pages free") Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
cxgb4: collect number of free PSTRUCT page pointers
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
mlxsw: Add extack messages for tc flower
Nir says:
This patch set adds extack messages support to tc flower part of mlxsw.
The messages provide clear reasoning to failures, as some of the available
actions and keys are not supported in driver or HW and resources may get
exhausted.
The first patch deals with propagation of the extack pointer among the functions
dealing with key parsing and action sets handling.
Following patches 2-4 add appropriate messages across the different layers of
mlxsw tc flower implementation.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 24 Jul 2018 17:00:54 +0000 (10:00 -0700)]
Merge tag 'mac80211-next-for-davem-2018-07-24' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Only a few things:
* HE (802.11ax) support in HWSIM
* bypass TXQ with NDP frames as they're special
* convert ahash -> shash in lib80211 TKIP
* avoid playing with tailroom counter defer unless
needed to avoid issues in some cases
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 24 Jul 2018 16:38:50 +0000 (09:38 -0700)]
Merge tag 'mac80211-for-davem-2018-07-24' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
Only a few fixes:
* always keep regulatory user hint
* add missing break statement in station flags parsing
* fix non-linear SKBs in port-control-over-nl80211
* reconfigure VLAN stations during HW restart
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
As explained in ieee80211_delayed_tailroom_dec(), during roam,
keys of the old AP will be destroyed and new keys will be
installed. Deletion of the old key causes
crypto_tx_tailroom_needed_cnt to go from 1 to 0 and the new key
installation causes a transition from 0 to 1.
Whenever crypto_tx_tailroom_needed_cnt transitions from 0 to 1,
we invoke synchronize_net(); the reason for doing this is to avoid
a race in the TX path as explained in increment_tailroom_need_count().
This synchronize_net() operation can be slow and can affect the station
roam time. To avoid this, decrementing the crypto_tx_tailroom_needed_cnt
is delayed for a while so that upon installation of new key the
transition would be from 1 to 2 instead of 0 to 1 and thereby
improving the roam time.
This is all correct for a STA iftype, but deferring the tailroom_needed
decrement for other iftypes may be unnecessary.
For example, let's consider the case of a 4-addr client connecting to
an AP for which AP_VLAN interface is also created, let the initial
value for tailroom_needed on the AP be 1.
* 4-addr client connects to the AP (AP: tailroom_needed = 1)
* AP will clear old keys, delay decrement of tailroom_needed count
* AP_VLAN is created, it takes the tailroom count from master
(AP_VLAN: tailroom_needed = 1, AP: tailroom_needed = 1)
* Install new key for the station, assume key is plumbed in the HW,
there won't be any change in tailroom_needed count on AP iface
* Delayed decrement of tailroom_needed count on AP
(AP: tailroom_needed = 0, AP_VLAN: tailroom_needed = 1)
Because of the delayed decrement on AP iface, tailroom_needed count goes
out of sync between AP(master iface) and AP_VLAN(slave iface) and
there would be unnecessary tailroom created for the packets going
through AP_VLAN iface.
Also, WARN_ONs were observed while trying to bring down the AP_VLAN
interface:
(warn_slowpath_common) (warn_slowpath_null+0x18/0x20)
(warn_slowpath_null) (ieee80211_free_keys+0x114/0x1e4)
(ieee80211_free_keys) (ieee80211_del_virtual_monitor+0x51c/0x850)
(ieee80211_del_virtual_monitor) (ieee80211_stop+0x30/0x3c)
(ieee80211_stop) (__dev_close_many+0x94/0xb8)
(__dev_close_many) (dev_close_many+0x5c/0xc8)
Restricting delayed decrement to station interface alone fixes the problem
and it makes sense to do so because delayed decrement is done to improve
roam time which is applicable only for client devices.
Signed-off-by: Manikanta Pubbisetty <mpubbise@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In preparing to remove all stack VLA usage from the kernel[1], this
removes the discouraged use of AHASH_REQUEST_ON_STACK in favor of
the smaller SHASH_DESC_ON_STACK by converting from ahash-wrapped-shash
to direct shash. The stack allocation will be made a fixed size in a
later patch to the crypto subsystem.
Currently user regulatory hint is ignored if all wiphys
in the system are self managed. But the hint is not ignored
if there is no wiphy in the system. This affects the global
regulatory setting. Global regulatory setting needs to be
maintained so that it can be applied to a new wiphy entering
the system. Therefore, do not ignore user regulatory setting
even if all wiphys in the system are self managed.
Signed-off-by: Amar Singhal <asinghal@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
David S. Miller [Tue, 24 Jul 2018 04:30:03 +0000 (21:30 -0700)]
Merge tag 'wireless-drivers-next-for-davem-2018-07-23' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
wireless-drivers-next patches for 4.19
The first set of patches for 4.19. Only smaller features and bug
fixes, not really anything major. Also included are changes to
include/linux/bitfield.h, we agreed with Johannes that it makes sense
to apply them via wireless-drivers-next.
Major changes:
ath10k
* support channel 173
* fix spectral scan for QCA9984 and QCA9888 chipsets
ath6kl
* add support for Dell Wireless 1537
ti wlcore
* add support for runtime PM
* enable runtime PM autosuspend support
qtnfmac
* support changing MAC address
* enable source MAC address randomization support
libertas
* fix suspend and resume for SDIO cards
mt76
* add software DFS radar pattern detector for mt76x2 based devices
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Mon, 23 Jul 2018 20:37:54 +0000 (22:37 +0200)]
sock: fix sg page frag coalescing in sk_alloc_sg
Current sg coalescing logic in sk_alloc_sg() (latter is used by tls and
sockmap) is not quite correct in that we do fetch the previous sg entry,
however the subsequent check whether the refilled page frag from the
socket is still the same as from the last entry with prior offset and
length matching the start of the current buffer is comparing always the
first sg list entry instead of the prior one.
Fixes: 3c4d7559159b ("tls: kernel TLS support") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Dave Watson <davejwatson@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 24 Jul 2018 04:17:44 +0000 (21:17 -0700)]
Merge branch 'rds-ipv6'
Ka-Cheong Poon says:
====================
rds: IPv6 support
This patch set adds IPv6 support to the kernel RDS and related
modules. Existing RDS apps using IPv4 address continue to run without
any problem. New RDS apps which want to use IPv6 address can do so by
passing the address in struct sockaddr_in6 to bind(), connect() or
sendmsg(). And those apps also need to use the new IPv6 equivalents
of some of the existing socket options as the existing options use a
32 bit integer to store IP address.
All RDS code now use struct in6_addr to store IP address. IPv4
address is stored as an IPv4 mapped address.
Header file changes
There are many data structures (RDS socket options) used by RDS apps
which use a 32 bit integer to store IP address. To support IPv6,
struct in6_addr needs to be used. To ensure backward compatibility, a
new data structure is introduced for each of those data structures
which use a 32 bit integer to represent an IP address. And new socket
options are introduced to use those new structures. This means that
existing apps should work without a problem with the new RDS module.
For apps which want to use IPv6, those new data structures and socket
options can be used. IPv4 mapped address is used to represent IPv4
address in the new data structures.
Internally, all RDS data structures which contain an IP address are
changed to use struct in6_addr to store the address. IPv4 address is
stored as an IPv4 mapped address. All the functions which take an IP
address as argument are also changed to use struct in6_addr.
RDS/RDMA/IB uses a private data (struct rds_ib_connect_private)
exchange between endpoints at RDS connection establishment time to
support RDMA. This private data exchange uses a 32 bit integer to
represent an IP address. This needs to be changed in order to support
IPv6. A new private data struct rds6_ib_connect_private is introduced
to handle this. To ensure backward compatibility, an IPv6 capable RDS
stack uses another RDMA listener port (RDS_CM_PORT) to accept IPv6
connection. And it continues to use the original RDS_PORT for IPv4 RDS
connections. When it needs to communicate with an IPv6 peer, it uses
the RDS_TCP_PORT to send the connection set up request.
RDS/TCP changes
TCP related code is changed to support IPv6. Note that only an IPv6
TCP listener on port RDS_TCP_PORT is created as it can accept both
IPv4 and IPv6 connection requests.
IB/RDMA changes
The initial private data exchange between IB endpoints using RDMA is
changed to support IPv6 address instead, if the peer address is IPv6.
To ensure backward compatibility, annother RDMA listener port
(RDS_CM_PORT) is used to accept IPv6 connection. An IPv6 capable RDS
module continues to use the original RDS_PORT for IPv4 RDS
connections. When it needs to communicate with an IPv6 peer, it uses
the RDS_CM_PORT to send the connection set up request.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
There are many data structures (RDS socket options) used by RDS apps
which use a 32 bit integer to store IP address. To support IPv6,
struct in6_addr needs to be used. To ensure backward compatibility, a
new data structure is introduced for each of those data structures
which use a 32 bit integer to represent an IP address. And new socket
options are introduced to use those new structures. This means that
existing apps should work without a problem with the new RDS module.
For apps which want to use IPv6, those new data structures and socket
options can be used. IPv4 mapped address is used to represent IPv4
address in the new data structures.
v4: Revert changes to SO_RDS_TRANSPORT
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch enables RDS to use IPv6 addresses. For RDS/TCP, the
listener is now an IPv6 endpoint which accepts both IPv4 and IPv6
connection requests. RDS/RDMA/IB uses a private data (struct
rds_ib_connect_private) exchange between endpoints at RDS connection
establishment time to support RDMA. This private data exchange uses a
32 bit integer to represent an IP address. This needs to be changed in
order to support IPv6. A new private data struct
rds6_ib_connect_private is introduced to handle this. To ensure
backward compatibility, an IPv6 capable RDS stack uses another RDMA
listener port (RDS_CM_PORT) to accept IPv6 connection. And it
continues to use the original RDS_PORT for IPv4 RDS connections. When
it needs to communicate with an IPv6 peer, it uses the RDS_CM_PORT to
send the connection set up request.
v5: Fixed syntax problem (David Miller).
v4: Changed port history comments in rds.h (Sowmini Varadhan).
v3: Added support to set up IPv4 connection using mapped address
(David Miller).
Added support to set up connection between link local and non-link
addresses.
Various review comments from Santosh Shilimkar and Sowmini Varadhan.
v2: Fixed bound and peer address scope mismatched issue.
Added back rds_connect() IPv6 changes.
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
rds: Changing IP address internal representation to struct in6_addr
This patch changes the internal representation of an IP address to use
struct in6_addr. IPv4 address is stored as an IPv4 mapped address.
All the functions which take an IP address as argument are also
changed to use struct in6_addr. But RDS socket layer is not modified
such that it still does not accept IPv6 address from an application.
And RDS layer does not accept nor initiate IPv6 connections.
v2: Fixed sparse warnings.
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
sched: introduce chain templates support with offloading to mlxsw
For the TC clsact offload these days, some of HW drivers need
to hold a magic ball. The reason is, with the first inserted rule inside
HW they need to guess what fields will be used for the matching. If
later on this guess proves to be wrong and user adds a filter with a
different field to match, there's a problem. Mlxsw resolves it now with
couple of patterns. Those try to cover as many match fields as possible.
This aproach is far from optimal, both performance-wise and scale-wise.
Also, there is a combination of filters that in certain order won't
succeed.
Most of the time, when user inserts filters in chain, he knows right away
how the filters are going to look like - what type and option will they
have. For example, he knows that he will only insert filters of type
flower matching destination IP address. He can specify a template that
would cover all the filters in the chain.
This patchset is providing the possibility to user to provide such
template to kernel and propagate it all the way down to device
drivers.
See the examples below.
Create dummy device with clsact first:
There is no chain present by by default:
Add chain number 11 by explicit command:
chain parent ffff: chain 11
Add filter to chain number 12 which does not exist. That will create
implicit chain 12:
chain parent ffff: chain 11
chain parent ffff: chain 12
Delete both chains:
Add a chain with template of type flower allowing to insert rules matching
on last 2 bytes of destination mac address:
The chain with template is now showed in the list:
chain parent ffff: flower chain 0
dst_mac 00:00:00:00:00:00/00:00:00:00:ff:ff
eth_type ipv4
Addition of filters that does not fit the template would fail:
Error: cls_flower: Mask does not fit the template.
We have an error talking to the kernel, -1
Error: cls_flower: Mask does not fit the template.
We have an error talking to the kernel, -1
Additions of filters to chain 22:
Error: cls_flower: Mask does not fit the template.
We have an error talking to the kernel, -1
Error: cls_flower: Mask does not fit the template.
We have an error talking to the kernel, -1
---
v3->v4:
- patch 2:
- new patch
- patch 3:
- new patch, derived from the previous v3 chaintemplate obj patch
- patch 4:
- only templates part as chains creation/deletion is now a separate patch
- don't pass template priv as arg of "change" op
- patch 6:
- rebased on top of flower cvlan patch and ip tos/ttl patch
- patch 7:
- templave priv is no longer passed as an arg to "change" op
- patch 11:
- split from the originally single patch
- patch 12:
- split from the originally single patch
v2->v3:
- patch 7:
- rebase on top of the reoffload patchset
- patch 8:
- rebase on top of the reoffload patchset
v1->v2:
- patch 8:
- remove leftover extack arg in fl_hw_create_tmplt()
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
projects / mirror_ubuntu-kernels.git / log