This patch adds support for DMA_ATTR_SKIP_CPU_SYNC and
DMA_ATTR_WEAK_ORDERING.  By enabling both of these for the Rx path we are
able to see performance improvements on architectures that implement either
one due to the fact that page mapping and unmapping only has to sync what
is actually being used instead of the entire buffer.  In addition by
enabling the weak ordering attribute enables a performance improvement for
architectures that can associate a memory ordering with a DMA buffer such
as Sparc.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

On some platforms, syncing a buffer for DMA is expensive. Rather than
sync the whole 2K receive buffer, only synchronise the length of the
frame, which will typically be the MTU, or a much smaller TCP ACK.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

This patch consolidates the code for the ixgbe driver so that it is more
inline with what is already in igb.  The general idea is to just
consolidate functions that represent logical steps in the Rx process so we
can later update them more easily.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Update the driver version to reflect the new devices that it
supports.
Signed-off-by: NMark Rustad <mark.d.rustad@intel.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Since dcbnl_ops is global, it should be prefixed by ixgbe_
Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Though not advertised through ethtool, if the link partner advertises a
2.5Gb or 5Gb connection, and the adapter supports it, allow the speed to be
used.
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: NKrishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

Stop accessing timer struct members directly and use setup_timer and
mod_timer helpers intended for that use. It makes the code cleaner and
will allow for easier change of the timer struct internals.
Signed-off-by: NJan Koniarik <jan.koniarik@trustica.cz>
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Cc: Chas Williams <3chas3@gmail.com>
Cc: <linux-atm-general@lists.sourceforge.net>
Cc: <netdev@vger.kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Current behaviour of "mirred redirect" action (forward) offload is a bit
odd. For matched packets the action forwards them to the desired
destination, but it also lets the packet duplicates to go the original
way down (bridge, router, etc). That is more like "mirred mirror".
Fix this by using PBS type which behaves exactly like "mirred redirect".
Note that PBS does not support loopback mode.

Fixes: 4cda7d8d ("mlxsw: core: Introduce flexible actions support")
Signed-off-by: NJiri Pirko <jiri@mellanox.com>
Reviewed-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Corentin Labbe says:

====================
stmmac: misc patchs

This is a follow up of my previous stmmac serie which address some comment
done in v2.
====================
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

It is easier to follow the logic by removing the not operator
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

As suggested by Joe Perches, replacing the "if phydev" logic permit to
reduce indentation in the for loop.
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The 10/100 case have too many ifcase.
This patch split it for removing an if.
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch mutualise a bit by running stmmac_hw_fix_mac_speed() after
the switch in case of valid speed.
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In case of invalid speed given, stmmac_adjust_link() still record it as
current speed.
This patch modify the default case to set speed as SPEED_UNKNOWN if not
10/100/1000.
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

It is better to use DUPLEX_UNKNOWN instead of just "-1".
Using 0 for an invalid speed is bad since 0 is a valid value for speed.
So this patch replace 0 by SPEED_UNKNOWN.
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The stmmac_adjust_link() function is called too rarely for having
likely() macros being useful.
Just remove likely annotation in it.
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch remove some useless parenthesis.
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: NGiuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

pci_enable_msix has been long deprecated, but this driver adds a new
instance.  Convert it to pci_alloc_irq_vectors so that no new instance
of the deprecated function reaches mainline.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Tested-by: NPavel Belous <pavel.belous@aquantia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Yuval Mintz says:

====================
qed*: Add support for PTP

This patch series adds required changes for qed/qede drivers for
supporting the IEEE Precision Time Protocol (PTP).

Changes from previous versions:
v7: Fixed Kbuild robot warnings.

v6: Corrected broken loop iteration in previous version.
    Reduced approximation error of adjfreq.

v5: Removed two divisions from the adjust-frequency loop.
    Resulting logic would use 8 divisions [instead of 24].

v4: Remove the loop iteration for value '0' in the qed_ptp_hw_adjfreq()
    implementation.

v3: Use div_s64 for 64-bit divisions as do_div gives error for signed
    types.
    Incorporated review comments from Richard Cochran.
      - Clear timestamp resgisters as soon as timestamp is read.
      - Use shift operation in the place of 'divide by 16'.

v2: Use do_div for 64-bit divisions.
====================
Acked-by: NRichard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds the driver support for,
  - Registering the ptp clock functionality with the OS.
  - Timestamping the Rx/Tx PTP packets.
  - Ethtool callbacks related to PTP.
Signed-off-by: NSudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: NYuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The patch adds the required qed interfaces for configuring/reading
the PTP clock on the adapter.
Signed-off-by: NSudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: NYuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Count buffer group drops or truncates as rx drops rather than
rx errors in netdev stats.
Signed-off-by: NGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: NArjun V <arjun@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Commit 91572088 ("net: use core MTU range checking in core net
infra") changed the openvswitch internal device to use the core net
infra for controlling the MTU range, but failed to actually set the
max_mtu as described in the commit message, which now defaults to
ETH_DATA_LEN.

This patch fixes this by setting max_mtu to ETH_MAX_MTU after
ether_setup() call.

Fixes: 91572088 ("net: use core MTU range checking in core net infra")
Signed-off-by: NJarno Rajahalme <jarno@ovn.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This fixes broken build for !NET_CLS:

net/built-in.o: In function `fq_codel_destroy':
/home/sab/linux/net-next/net/sched/sch_fq_codel.c:468: undefined reference to `tcf_destroy_chain'

Fixes: cf1facda ("sched: move tcf_proto_destroy and tcf_destroy_chain helpers into cls_api")
Reported-by: NSabrina Dubroca <sd@queasysnail.net>
Signed-off-by: NJiri Pirko <jiri@mellanox.com>
Tested-by: NSabrina Dubroca <sd@queasysnail.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This is needed to force a rebuild of bpf.o when one of its dependencies
(e.g. uapi/linux/bpf.h) is updated.

Add a phony target.
Signed-off-by: NMickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove a useless ifdef __NR_bpf as requested by Wang Nan.

Inline one-line static functions as it was in the bpf_sys.h file.
Signed-off-by: NMickaël Salaün <mic@digikod.net>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/r/828ab1ff-4dcf-53ff-c97b-074adb895006@huawei.comAcked-by: NWang Nan <wangnan0@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Using a reader-writer lock in fast path is silly, when we can
instead use RCU or a seqlock.

For mlx4 hwstamp clock, a seqlock is the way to go, removing
two atomic operations and false sharing.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: NTariq Toukan <tariqt@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The usage count function is based on ndev_running flag that is
updated before calling ndo_open/close, but if ndo is called in
another place, as with suspend/resume, the counter is not changed,
that breaks sus/resume. For common resource no difference which
device is using it, does matter only device count. So, replace
usage count function on var and inc and dec it in ndo_open/close.
Signed-off-by: NIvan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

pch_gbe_get_stats() just returns dev->stats so we can leave it out
altogether and let dev_get_stats() do the job.
Signed-off-by: NTobias Klauser <tklauser@distanz.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

hip04_get_stats() just returns dev->stats so we can leave it
out altogether and let dev_get_stats() do the job.
Signed-off-by: NTobias Klauser <tklauser@distanz.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fixes the following sparse warning:

net/sched/act_api.c:532:5: warning:
 symbol 'nla_memdup_cookie' was not declared. Should it be static?
Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

remove useless ioport.h include.
Signed-off-by: NManuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

remove the unused timer.  I suppose it was intended as a timeout
detector, but never properly implemented.
Signed-off-by: NManuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fixes the following warnings:

kernel/bpf/verifier.c: In function ‘may_access_direct_pkt_data’:
kernel/bpf/verifier.c:702:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (t == BPF_WRITE)
      ^
kernel/bpf/verifier.c:704:2: note: here
  case BPF_PROG_TYPE_SCHED_CLS:
  ^~~~
kernel/bpf/verifier.c: In function ‘reg_set_min_max_inv’:
kernel/bpf/verifier.c:2057:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
   true_reg->min_value = 0;
   ~~~~~~~~~~~~~~~~~~~~^~~
kernel/bpf/verifier.c:2058:2: note: here
  case BPF_JSGT:
  ^~~~
kernel/bpf/verifier.c:2068:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
   true_reg->min_value = 0;
   ~~~~~~~~~~~~~~~~~~~~^~~
kernel/bpf/verifier.c:2069:2: note: here
  case BPF_JSGE:
  ^~~~
kernel/bpf/verifier.c: In function ‘reg_set_min_max’:
kernel/bpf/verifier.c:2009:24: warning: this statement may fall through [-Wimplicit-fallthrough=]
   false_reg->min_value = 0;
   ~~~~~~~~~~~~~~~~~~~~~^~~
kernel/bpf/verifier.c:2010:2: note: here
  case BPF_JSGT:
  ^~~~
kernel/bpf/verifier.c:2019:24: warning: this statement may fall through [-Wimplicit-fallthrough=]
   false_reg->min_value = 0;
   ~~~~~~~~~~~~~~~~~~~~~^~~
kernel/bpf/verifier.c:2020:2: note: here
  case BPF_JSGE:
  ^~~~
Reported-by: NDavid Binderman <dcb314@hotmail.com>
Signed-off-by: NAlexander Alemayhu <alexander@alemayhu.com>
Acked-by: NDaniel Borkmann <daniel@iogearbox.net>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Even though the port autoselection is enabled by default on AM79C970A,
BNC/AUI port does not work because the link is always reported to be
down. The link state reported by the chip belongs only to the TP port
but the driver uses it regardless of the port used. The chip can't
detect BNC/AUI link state.

Disable port autoselection and use TP port by default to keep current
behavior (link detection works on TP port, BNC/AUI port does not work).

Implement ethtool autoneg, port and duplex configuration to allow
using the BNC/AUI port.

Report the TP link state only if the TP port is selected. When the
port autoselection is enabled or AUI port is selected, report the link
as always up.

Move pcnet32_suspend() and pcnet32_clr_suspend() functions to avoid
forward declarations.
Signed-off-by: NOndrej Zary <linux@rainbow-software.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Move the code to clear SUSPEND flag to a separate function to simplify
code.
Signed-off-by: NOndrej Zary <linux@rainbow-software.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Point back the unregister IPv6 mc table to the bc table.
It is done since IPv6 mcast snooping is not supported for Spectrum yet.
Reported-by: NJiri Pirko <jiri@mellanox.com>
Fixes: 71c365bd ("mlxsw: spectrum: Separate bc and mc floods")
Signed-off-by: NNogah Frankel <nogahf@mellanox.com>
Signed-off-by: NYotam Gigi <yotamg@mellanox.com>
Tested-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Shannon Nelson says:

====================
sunvnet driver updates

The sunvnet ldom virtual network driver was due for some updates and
a bugfix or two.  These patches address a few items left over from
last year's make-over.

v2:
 - changed memory barrier fix to use smp_wmb
 - put NETIF_F_SG back into the advertised ldmvsw hw_features

v3:
 - the sunvnet_common module doesn't need module_init or _exit

v4:
 - dropped the statistics patch
 - fixed up "default" tag for SUNVNET_COMMON
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The ldmvsw driver is specifically for supporting the ldom virtual
networking by running in the primary ldom and using the LDC to connect
the remaining ldoms to the outside world via a bridge.  With TSO and GSO
supported while connected the bridge, things tend to misbehave as seen
in our case by delayed packets, enough to begin triggering retransmits
and affecting overall throughput.  By turning off advertised support for
TSO and GSO we restore stable traffic flow through the bridge.

Orabug: 23293104
Signed-off-by: NShannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

New version and simplify the print code.
Signed-off-by: NShannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>