This flag indicates whether fragmentation of segments is allowed.

Formerly this policy was hardcoded according to IPSKB_FORWARDED (set by
either ip_forward or ipmr_forward).

Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Florian Westphal <fw@strlen.de>
Signed-off-by: NShmulik Ladkani <shmulik.ladkani@gmail.com>
Acked-by: NHannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Michael Chan says:

====================
bnxt_en: Add support for NS2 Nitro.

This series adds support for the embedded version of the
ethernet controller (Nitro) in the North Star 2 SoC.  There are a number
of features not supported and a software workaround for a hardware rx
bug is required for Nitro A0.  Please review.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

A bridge device in NS2 has the same device ID as the ethernet controller.
Add check to avoid probing the bridge device.
Signed-off-by: NPrashant Sreedharan <prashant.sreedharan@broadcom.com>
Signed-off-by: NVasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Allocate special vnic for dropping packets not matching the RX filters.
First vnic is for normal RX packets and the driver will drop all
packets on the 2nd vnic.
Signed-off-by: NPrashant Sreedharan <prashant.sreedharan@broadcom.com>
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Allocate napi for special vnic, packets arriving on this
napi will simply be dropped and the buffers will be replenished back
to the HW.
Signed-off-by: NPrashant Sreedharan <prashant.sreedharan@broadcom.com>
Signed-off-by: NVasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The hardware is unable to drop rx packets not matching the RX filters.  To
workaround it, we create a special VNIC and configure the hardware to
direct all packets not matching the filters to it.  We then setup the
driver to drop packets received on this VNIC.

This patch creates the infrastructure for this VNIC, reserves a
completion ring, and rx rings.  Only shared completion ring mode is
supported.  The next 2 patches add a NAPI to handle packets from this
VNIC and the setup of the VNIC.
Signed-off-by: NPrashant Sreedharan <prashant.sreedharan@broadcom.com>
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Nitro A0 has a hardware bug in the rx path.  The workaround is to create
a special COS context as a path for non-RSS (non-IP) packets.  Without this
workaround, the chip may stall when receiving RSS and non-RSS packets.

Add infrastructure to allow 2 contexts (RSS and CoS) per VNIC.  Allocate
and configure the CoS context for Nitro A0.
Signed-off-by: NPrashant Sreedharan <prashant.sreedharan@broadcom.com>
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Nitro is the embedded version of the ethernet controller in the North
Star 2 SoC.  Add basic code to recognize the chip ID and disable
the features (ntuple, TPA, ring and port statistics) not supported on
Nitro A0.
Signed-off-by: NPrashant Sreedharan <prashant.sreedharan@broadcom.com>
Signed-off-by: NVasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Charles-Antoine Couret says:

====================
Marvell phy: fiber interface configuration

Another patchset to manage correctly the fiber link for some concerned Marvell's
phy like 88E1512.

This patchset fixed the commit log for the third and last commits and a comment
in the first commit.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

These functions used standards registers in a different page
for both interfaces: copper and fiber.
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NCharles-Antoine Couret <charles-antoine.couret@nexvision.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

To be correctly initilized, the fiber interface needs
to be configured via autonegociation registers which use
some customs options or registers.
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NCharles-Antoine Couret <charles-antoine.couret@nexvision.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for the fiber receiver error counter in the
statistics. Rename the current counter which is for copper errors to
phy_receive_errors_copper, so it is easy to distinguish copper from
fiber.
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NCharles-Antoine Couret <charles-antoine.couret@nexvision.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

For concerned phy, the fiber link is checked before the copper link.
According to datasheet, the link which is up is enabled.

If both links are down, copper link would be used.
To detect fiber link status, we used the real time status
because of troubles with the copper method.

Tested with Marvell 88E1512.
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NCharles-Antoine Couret <charles-antoine.couret@nexvision.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Sergei Shtylyov says:

====================
Fix DMA channel misreporting for the Renesas Ethernet drivers

Here's a set of 2 patches against DaveM's 'net.git' repo fixing up the DMA
channel reporting by 'ifconfig'...
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently 'ifconfig' for the Ethernet devices handled by this driver  shows
"DMA chan: ff" while the driver doesn't use any DMA channels. Not assigning
a value to 'net_device::dma' causes 'ifconfig'  to  correctly not report  a
DMA channel.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently 'ifconfig' for the Ethernet devices handled by this driver  shows
"DMA chan: ff" while the driver doesn't use any DMA channels. Not assigning
a value to 'net_device::dma' causes 'ifconfig'  to  correctly not report  a
DMA channel.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In 'get_scq', 'dma_alloc_coherent' has been used to allocate some
resources, so we need to free them using 'dma_free_coherent' instead
of 'kfree'.
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In 'cpmac_open', 'dma_alloc_coherent' has been used to allocate some
resources, so we need to free them using 'dma_free_coherent' instead
of 'kfree'.

Also, we don't need to free these resources if the allocation has failed.
So I have slighly modified the goto label in this case.
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We should use kfree_skb() instead of kfree() to free an skb.

Fixes: 362899b8 ("macvtap: switch to use skb array")
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NJason Wang <jasowang@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.
Signed-off-by: NPhilippe Reynes <tremyfr@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.
Signed-off-by: NPhilippe Reynes <tremyfr@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.

There was a check on CAP_NET_ADMIN in bfin_mac_ethtool_setsettings,
but this check is already done in dev_ethtool, so no need to repeat
it before calling the generic function.
Signed-off-by: NPhilippe Reynes <tremyfr@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phydev in the private structure, and update the driver to use the
one contained in struct net_device.
Signed-off-by: NPhilippe Reynes <tremyfr@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

alloc_workqueue replaces deprecated create_singlethread_workqueue().

A dedicated workqueue has been used since the workitem viz
lp->txtimeout_reinit is involved in reinitialization if a TX timeout
occurs, which is necessary to guarantee forward progress in packet
processing. As a network device can be used during memory reclaim, the
workqueue needs forward progress guarantee under memory pressure.
WQ_MEM_RECLAIM has been set to ensure this.

Since there is only a single work item, explicit concurrency limit is
unnecessary here.
Signed-off-by: NBhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Should have been obvious, only called from bpf() syscall via map_update_elem()
that calls bpf_fd_array_map_update_elem() under RCU read lock and thus this
must also be in GFP_ATOMIC, of course.

Fixes: 3b1efb19 ("bpf, maps: flush own entries on perf map release")
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

commit 90017acc ("sctp: Add GSO support") didn't register SCTP GSO
offloading for IPv6 and yet didn't put any restrictions on generating
GSO packets while in IPv6, which causes all IPv6 GSO'ed packets to be
silently dropped.

The fix is to properly register the offload this time.

Fixes: 90017acc ("sctp: Add GSO support")
Signed-off-by: NMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Commit d46e416c missed to update some other places which checked for
the socket being TCP-style AND Established state, as Closing state has
some overlapping with the previous understanding of Established.

Without this fix, one of the effects is that some already queued rx
messages may not be readable anymore depending on how the association
teared down, and sending may also not be possible if peer initiated the
shutdown.

Also merge two if() blocks into one condition on sctp_sendmsg().

Cc: Xin Long <lucien.xin@gmail.com>
Fixes: d46e416c ("sctp: sctp should change socket state when shutdown is received")
Signed-off-by: NMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There are two generics functions phy_ethtool_{get|set}_link_ksettings,
so we can use them instead of defining the same code in the driver.
Signed-off-by: NPhilippe Reynes <tremyfr@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Dongpo Li says:

====================
Add Hisilicon MDIO bus driver and FEMAC driver

This patch set adds a Hisilicon MDIO bus driver and
a Fast Ethernet MAC(FEMAC) driver.
We also abstract a general interface "of_phy_get_and_connect"
for PHY connect. User will have no bother with getting
"phy-mode" and "phy-handle" any more.

Changes in v1:
- Pass private data structure instead of struct mii_bus
  in MDIO read and write operation.
- Return the error which devm_clk_get() gives when MDIO probe.
- Leave the clock unprepared and disabled on error when MDIO probe.
- Abstract a general interface "of_phy_get_and_connect" for PHY connect.
- Remove the "_reset" suffixes in "reset-names" property.
- Enable tx per-packet interrupt when tx fifo full.
- Remove pointless compatible and add SoC specific compatible.
- Declare only one clock in MAC dts documentation.
- Add standard unit suffixes for "phy-reset-delays".
- Use a smaller NAPI poll weight 16 for our Fast Ethernet MAC.
- Use phy_ethtool_{get|set}_link_ksettings for ethtool ops.
- Use phydev from struct net_device in MAC driver.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds the Hisilicon Fast Ethernet MAC(FEMAC) driver.
The FEMAC supports max speed 100Mbps and has been used in many
Hisilicon SoC.
Signed-off-by: NDongpo Li <lidongpo@hisilicon.com>
Reviewed-by: NJiancheng Xue <xuejiancheng@hisilicon.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Abstract a general interface "of_phy_get_and_connect"
for PHY connect. User will have no bother with getting
"phy-mode" and "phy-handle" any more.
Suggested-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDongpo Li <lidongpo@hisilicon.com>
Reviewed-by: NJiancheng Xue <xuejiancheng@hisilicon.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds a separate driver for the MDIO interface of the
Hisilicon Fast Ethernet MAC.
Signed-off-by: NDongpo Li <lidongpo@hisilicon.com>
Reviewed-by: NJiancheng Xue <xuejiancheng@hisilicon.com>
Acked-by: NRob Herring <robh@kernel.org>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

TI_CPSW_PHY_SEL depended on TI_CPSW and was selected by the latter. So
there is no reason to have this symbol visible.

A further optimisation would be to put the code for both symbols into a
single module which would allow to not export at least cpsw_phy_sel()
and simplify the module load process.
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

It was used err_xxx for labeled statement, it is
not easy to understand, now use free_xxx for labeled
statement.
Signed-off-by: NZhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

'uhdlc_priv' has freed twice, drop the first one.
Signed-off-by: NZhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In preparation for hardware offloading of ipmr/ip6mr we need an
interface that allows to check (and later update) the age of entries.
Relying on stats alone can show activity but not actual age of the entry,
furthermore when there're tens of thousands of entries a lot of the
hardware implementations only support "hit" bits which are cleared on
read to denote that the entry was active and shouldn't be aged out,
these can then be naturally translated into age timestamp and will be
compatible with the software forwarding age. Using a lastuse entry doesn't
affect performance because the members in that cache line are written to
along with the age.
Since all new users are encouraged to use ipmr via netlink, this is
exported via the RTA_EXPIRES attribute.
Also do a minor local variable declaration style adjustment - arrange them
longest to shortest.
Signed-off-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com>
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
CC: Shrijeet Mukherjee <shm@cumulusnetworks.com>
CC: Satish Ashok <sashok@cumulusnetworks.com>
CC: Donald Sharp <sharpd@cumulusnetworks.com>
CC: David S. Miller <davem@davemloft.net>
CC: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
CC: James Morris <jmorris@namei.org>
CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
CC: Patrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Some devices of the same type all export the same, random MAC address. This
behavior has been seen on the ZTE MF910, MF823 and MF831, and there are
probably more devices out there. Fix this by generating a valid random MAC
address if we read a random MAC from device.

Also, changed the memcpy() to ether_addr_copy(), as pointed out by
checkpatch.
Suggested-by: NBjørn Mork <bjorn@mork.no>
Signed-off-by: NKristian Evensen <kristian.evensen@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Nikolay Aleksandrov says:

====================
net: bridge: simplify receive path and consolidate forwarding paths

This set tries to simplify the receive and forwarding paths. Patch 01 is
a trivial style adjustment, patch 02 removes one conditional from the
unicast fast path, patch 03 removes another conditional and more imporantly
removes the skb0/skb2 ambiguity about locally receiving the skb and
switches to a boolean called "local_rcv".
Patch 04 is the most important change which consolidates the forwarding
paths for locally originated and forwarded packets into __br_forward. This
allows us to remove the function pointers giving a minor performance boost,
more importantly it makes it much easier to reason about the forwarding
path and reduces the code duplication that was needed when making changes.
Also it allows the receive path to fully setup the environment prior to
calling any forwarding functions (i.e. to properly set unicast, local_rcv
and search for unicast/mcast dst).
Functionally everything should stay the same after this set.

I've done basic tests with unicast/multicast/broadcast Tx/Rx. Please
review carefully.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Before this patch we had two flavors of most forwarding functions -
_forward and _deliver, the difference being that the latter are used
when the packets are locally originated. Instead of all this function
pointer passing and code duplication, we can just pass a boolean noting
that the packet was locally originated and use that to perform the
necessary checks in __br_forward. This gives a minor performance
improvement but more importantly consolidates the forwarding paths.
Also add a kernel doc comment to explain the exported br_forward()'s
arguments.
Signed-off-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently if the packet is going to be received locally we set skb0 or
sometimes called skb2 variables to the original skb. This can get
confusing and also we can avoid one conditional on the fast path by
simply using a boolean and passing it around. Thanks to Roopa for the
name suggestion.
Signed-off-by: NNikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>