inet6_add_protocol and inet6_del_protocol include casts that remove the
effect of the const annotation on their parameter, leading to possible
runtime crashes.
Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
inet6_add_protocol and inet6_del_protocol include casts that remove the
effect of the const annotation on their parameter, leading to possible
runtime crashes.
Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Sitnicki [Mon, 31 Jul 2017 08:09:41 +0000 (10:09 +0200)]
ipv6: Avoid going through ->sk_net to access the netns
There is no need to go through sk->sk_net to access the net namespace
and its sysctl variables because we allocate the sock and initialize
sk_net just a few lines earlier in the same routine.
Signed-off-by: Jakub Sitnicki <jkbs@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 1 Aug 2017 01:00:24 +0000 (18:00 -0700)]
Merge branch 'marvell-phy-refactor-and-cleanup'
Andrew Lunn says:
====================
More Marvell PHY refactoring and cleanup
Consolidate more duplicated code into helpers, make use of core
helpers, move code into a helper for later adding functionality to add
marvell PHYs, etc.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Sun, 30 Jul 2017 20:41:49 +0000 (22:41 +0200)]
net: phy: marvell: Use the set_polarity helper
Some of the init functions unilaterally enable set auto cross over
without using the helper. Make use of the helper, and respect the
phydev MDI configuration.
Clean up the #define used while setting polarity, and the other
functions of the bits in the register.
Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
The driver needs CONFIG_HAS_IOMEM and OF to be functional, but we still
let it build with COMPILE_TEST. This fixes the unmet dependency after
selecting MDIO_BCM_UNIMAC in commit mentioned below:
warning: (NET_DSA_BCM_SF2 && BCMGENET) selects MDIO_BCM_UNIMAC which has
unmet direct dependencies (NETDEVICES && MDIO_DEVICE && HAS_IOMEM &&
OF_MDIO)
Fixes: 9a4e79697009 ("net: bcmgenet: utilize generic Broadcom UniMAC MDIO controller driver") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Wang [Fri, 28 Jul 2017 17:28:21 +0000 (10:28 -0700)]
tcp: add related fields into SCM_TIMESTAMPING_OPT_STATS
Add the following stats into SCM_TIMESTAMPING_OPT_STATS control msg:
TCP_NLA_PACING_RATE
TCP_NLA_DELIVERY_RATE
TCP_NLA_SND_CWND
TCP_NLA_REORDERING
TCP_NLA_MIN_RTT
TCP_NLA_RECUR_RETRANS
TCP_NLA_DELIVERY_RATE_APP_LMT
Signed-off-by: Wei Wang <weiwan@google.com> Acked-by: Yuchung Cheng <ycheng@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Wang [Fri, 28 Jul 2017 17:28:20 +0000 (10:28 -0700)]
tcp: extract the function to compute delivery rate
Refactor the code to extract the function to compute delivery rate.
This function will be used in later commit.
Signed-off-by: Wei Wang <weiwan@google.com> Acked-by: Yuchung Cheng <ycheng@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 31 Jul 2017 21:44:34 +0000 (14:44 -0700)]
Merge branch 'mlxsw-Various-small-fixes'
Jiri Pirko says:
====================
mlxsw: Various small fixes
This patch series is to contribute several fixes for nits that I noticed while
working on mlxsw. The changes range from typo fixes to local improvements of
the code and have little in common besides being small in scope.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:30 +0000 (09:27 +0200)]
mlxsw: spectrum_router: Simplify a piece of code
Express the same logic more succinctly.
Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:29 +0000 (09:27 +0200)]
mlxsw: spectrum_router: Clarify a piece of code
Prefer logical operator that expresses the intent to bitwise one that
happens to give the same result.
Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:28 +0000 (09:27 +0200)]
mlxsw: spectrum_router: Simplify a piece of code
Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:27 +0000 (09:27 +0200)]
mlxsw: reg.h: Namespace IP2ME registers
This renames IP2ME-specific registers reg_ralue_v and
reg_ralue_tunnel_ptr to reg_ralue_ip2me_*.
Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:25 +0000 (09:27 +0200)]
mlxsw: spectrum_router: Fix a typo
Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:24 +0000 (09:27 +0200)]
mlxsw: reg.h: Fix a typo
Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:23 +0000 (09:27 +0200)]
mlxsw: spectrum_acl: Fix a typo
Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch series migrates the Broadcom GENET driver to use the mdio-bcm-unimac
driver. This MDIO HW is the same as the one GENET internally embedds, yet for
historical reasons the two drivers lived their own lives. Because of the GENET
interrupt situation, we let it specify how it wants to signal MDIO operations
completion using its driver-private waitqueue.
The diffstat is not super impressive, but it's still negative! This would
make it easier in the future to absorb possible workarounds/bugs/features
within the same location.
This was tested on BCM7260 (GENETv5, single instance), BCM7439 (GENETv4, triple
instance) and BCM7445 (bcm_sf2 + mdio-bcm-unimac).
net: bcmgenet: Utilize bcmgenet_mii_exit() for error path
bcmgenet_mii_init() has an error path which is strictly identical to the
unwinding that bcmgenet_mii_exit() does, so have bcmgenet_mii_init()
utilize bcmgenet_mii_exit() for that.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Update the GENET driver to register an UniMAC MDIO bus controller for
the GENET internal MDIO bus, update the platform data code to attach the
PHY to the correct MDIO bus controller.
The Device Tree portion of the code is mostly left unmodified since the
lookup/binding is done via phandles and Device Tree nodes which are much
more flexible in locating and binding PHYs to their respective MDIO bus
controllers.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: phy: mdio-bcm-unimac: Allow specifying platform data
In preparation for having the bcmgenet driver migrate over the
mdio-bcm-unimac driver, add a platform data structure which allows
passing integrating specific details like bus name, wait function to
complete MDIO operations and PHY mask.
We also define what the platform device name contract is by defining
UNIMAC_MDIO_DRV_NAME and moving it to the platform_data header.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: phy: mdio-bcm-unimac: Add debug print for PHY workaround
In order to be stricly identical to what bcmgenet does, add a debug
print when a PHY workaround during bus->reset() is executed. Preliminary
change to moving bcmgenet towards mdio-bcm-unimac.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: phy: mdio-bcm-unimac: create unique bus names
In preparation for having multiple GENET instances in a system (up to
3), make sure that we do include the bus instance number in the name of
the MDIO bus such that we change it from "unimac-mdio" to
"unimac-mdio-0" for instance.
So far, the only user of this driver is using Device Tree, which uses a
lookup/parenting based technique to map PHY devices to their respective
MDIO bus controllers, hence causing no additional changes.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Factor the code that does the busy polling on the MDIO_BUSY bit since we
will have different code-paths for for completion depending on whether
we are using interrupts or polling.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
tcp: remove prequeue and header prediction
During a hallway discussion with Eric Dumazet at Netdev 1.2 in
Tokyo some maybe-not-so-useful-anymore TCP stack features came up,
among these header prediction and prequeueing.
In brief, TCP prequeue assumes a single-process-blocking-read design,
which is not that common anymore. The most frequently used high-performance
networking program that is an excellent fit for these features is netperf.
The idea behind prequeueing is to move part of tcp processing, including
retransmit queue cleaning, to process context.
With (e)poll designs, prequeue is always skipped, so for such programs
this is dead-code removal.
Header prediction is also less useful nowadays.
For packet trains, GRO will do packet aggregation so we do not get the
per-packet benefit that this had before GRO anymore.
Because of SACK, header prediction also will be ineffective once
a connection suffers even light packet losses.
code removal aside, after this change processing always occurs in BH
context, this allows to experiment e.g. with doing bulk freeing of
skb heads when incoming ACKs clean packets from the retransmit queue.
There are no changes since the RFC, except in last patch (i missed
another no-longer-used mib counter). I also edited a few commit messages.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Like prequeue, I am not sure this is overly useful nowadays.
If we receive a train of packets, GRO will aggregate them if the
headers are the same (HP predates GRO by several years) so we don't
get a per-packet benefit, only a per-aggregated-packet one.
Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
prequeue is a tcp receive optimization that moves part of rx processing
from bh to process context.
This only works if the socket being processed belongs to a process that
is blocked in recv on that socket.
In practice, this doesn't happen anymore that often because nowadays
servers tend to use an event driven (epoll) model.
Even normal client applications (web browsers) commonly use many tcp
connections in parallel.
This has measureable impact only in netperf (which uses plain recv and
thus allows prequeue use) from host to locally running vm (~4%), however,
there were no changes when using netperf between two physical hosts with
ixgbe interfaces.
Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
net sched actions: improve dump performance
Changes since v11:
------------------
1) Jiri - renames: nla_value to value and nla_selector to selector
2) Jiri - rename: validate_nla_bitfield_32 to validate_nla_bitfield_32
3) Jiri - rename: NLA_BITFIELD_32 to NLA_BITFIELD32
4) Jiri - remove unnecessary break when we return in case statement
5) Jiri - rename and move nla_get_bitfield_32 to an earlier patch
6) Jiri - xmas tree alignment of var declaration
7) Jiri - rename all declarations of bitfield 32 vars to be consistent ("bf")
8) Jiri - improve validate_nla_bitfield32() validation to disallow valid
bit values that are not selected by the selector
Changes since v10:
-----------------
1) Jiri: move type->validate_content() to its own patch
Jamal: decided to remove it altogether so we can get this patch set in.
2) Change name of NLA_FLAG_BITS to NLA_BITFIELD_32 based on discussions
with D. Ahern and Jiri. D. Ahern suggests to make this a variable bitmap size.
My analysis at this point is it too complex and i only need a few bit
flags. If we run out of bits someone else can create a new NLA_BITFIELD_XXX
and start using that. So please let this go.
3) Jamal - Add Suggested-by: Jiri for type NLA_BITFIELD_32
4) Jiri: Change name allowed_flags to tcaa_root_flags_allowed
5) Jiri: Introduce nla_get_flag_bits_values() helper instead of using
memcpy for retrieving nla_bitfield_32 fields.
Changes since v9:
-----------------
1) General consensus:
- remove again the use of BIT() to maintain uapi consistency ;->
1) Jiri:
- Add a new netlink type NLA_FLAG_BITS to check for valid bits
and use it instead of inline vetting (patch 4/4 now)
Changes since v8:
-----------------
1) Jiri:
- Add back the use of BIT(). Eventually fix iproute2 instead
- Rename VALID_TCA_FLAGS to VALID_TCA_ROOT_FLAGS
Changes since v7:
-----------------
Jamal:
No changes.
Patch 1 went out twice. Resend without two copies of patch 1
changes since v6:
-----------------
1) DaveM:
New rules for netlink messages. From now on we are going to start
checking for bits that are not used and rejecting anything we dont
understand. In the future this is going to require major changes
to user space code (tc etc). This is just a start.
To quote, David:
"
Again, bits you aren't using now, make sure userspace doesn't
set them. And if it does, reject.
"
Added checks for ensuring things work as above.
2) Jiri:
a)Fix the commit message to properly use "Fixes" description
b)Align assignments for nla_policy
Changes since v5:
----------------
0)
Remove use of BIT() because it is kernel specific. Requires a separate
patch (Jiri can submit that in his cleanups)
1)To paraphrase Eric D.
"memcpy(nla_data(count_attr), &cb->args[1], sizeof(u32));
wont work on 64bit BE machines because cb->args[1]
(which is 64 bit is larger in size than sizeof(u32))"
Fixed
2) Jiri Pirko
i) Spotted a bug fix mixed in the patch for wrong TLV
fix. Add patch 1/3 to address this. Make part of this
series because of dependencies.
net sched actions: add time filter for action dumping
This patch adds support for filtering based on time since last used.
When we are dumping a large number of actions it is useful to
have the option of filtering based on when the action was last
used to reduce the amount of data crossing to user space.
With this patch the user space app sets the TCA_ROOT_TIME_DELTA
attribute with the value in milliseconds with "time of interest
since now". The kernel converts this to jiffies and does the
filtering comparison matching entries that have seen activity
since then and returns them to user space.
Old kernels and old tc continue to work in legacy mode since
they dont specify this attribute.
Some example (we have 400 actions bound to 400 filters); at
installation time. Using updated when tc setting the time of
interest to 120 seconds earlier (we see 400 actions):
prompt$ hackedtc actions ls action gact since 120000| grep index | wc -l
400
go get some coffee and wait for > 120 seconds and try again:
prompt$ hackedtc actions ls action gact since 120000 | grep index | wc -l
0
Lets see a filter bound to one of these actions:
....
filter pref 10 u32
filter pref 10 u32 fh 800: ht divisor 1
filter pref 10 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:10 (rule hit 2 success 1)
match 7f000002/ffffffff at 12 (success 1 )
action order 1: gact action pass
random type none pass val 0
index 23 ref 2 bind 1 installed 1145 sec used 802 sec
Action statistics:
Sent 84 bytes 1 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
....
that coffee took long, no? It was good.
Now lets ping -c 1 127.0.0.2, then run the actions again:
prompt$ hackedtc actions ls action gact since 120 | grep index | wc -l
1
More details please:
prompt$ hackedtc -s actions ls action gact since 120000
action order 0: gact action pass
random type none pass val 0
index 23 ref 2 bind 1 installed 1270 sec used 30 sec
Action statistics:
Sent 168 bytes 2 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
And the filter?
filter pref 10 u32
filter pref 10 u32 fh 800: ht divisor 1
filter pref 10 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:10 (rule hit 4 success 2)
match 7f000002/ffffffff at 12 (success 2 )
action order 1: gact action pass
random type none pass val 0
index 23 ref 2 bind 1 installed 1324 sec used 84 sec
Action statistics:
Sent 168 bytes 2 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net sched actions: dump more than TCA_ACT_MAX_PRIO actions per batch
When you dump hundreds of thousands of actions, getting only 32 per
dump batch even when the socket buffer and memory allocations allow
is inefficient.
With this change, the user will get as many as possibly fitting
within the given constraints available to the kernel.
The top level action TLV space is extended. An attribute
TCA_ROOT_FLAGS is used to carry flags; flag TCA_FLAG_LARGE_DUMP_ON
is set by the user indicating the user is capable of processing
these large dumps. Older user space which doesnt set this flag
doesnt get the large (than 32) batches.
The kernel uses the TCA_ROOT_COUNT attribute to tell the user how many
actions are put in a single batch. As such user space app knows how long
to iterate (independent of the type of action being dumped)
instead of hardcoded maximum of 32 thus maintaining backward compat.
Some results dumping 1.5M actions below:
first an unpatched tc which doesnt understand these features...
prompt$ time -p tc actions ls action gact | grep index | wc -l 1500000
real 1388.43
user 2.07
sys 1386.79
Now lets see a patched tc which sets the correct flags when requesting
a dump:
prompt$ time -p updatedtc actions ls action gact | grep index | wc -l 1500000
real 178.13
user 2.02
sys 176.96
That is about 8x performance improvement for tc app which sets its
receive buffer to about 32K.
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net sched actions: Use proper root attribute table for actions
Bug fix for an issue which has been around for about a decade.
We got away with it because the enumeration was larger than needed.
Fixes: 7ba699c604ab ("[NET_SCHED]: Convert actions from rtnetlink to new netlink API") Suggested-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Generic bitflags attribute content sent to the kernel by user.
With this netlink attr type the user can either set or unset a
flag in the kernel.
The value is a bitmap that defines the bit values being set
The selector is a bitmask that defines which value bit is to be
considered.
A check is made to ensure the rules that a kernel subsystem always
conforms to bitflags the kernel already knows about. i.e
if the user tries to set a bit flag that is not understood then
the _it will be rejected_.
In the most basic form, the user specifies the attribute policy as:
[ATTR_GOO] = { .type = NLA_BITFIELD32, .validation_data = &myvalidflags },
where myvalidflags is the bit mask of the flags the kernel understands.
If the user _does not_ provide myvalidflags then the attribute will
also be rejected.
Examples:
value = 0x0, and selector = 0x1
implies we are selecting bit 1 and we want to set its value to 0.
value = 0x2, and selector = 0x2
implies we are selecting bit 2 and we want to set its value to 1.
Suggested-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Sun, 30 Jul 2017 17:36:05 +0000 (19:36 +0200)]
net: fec: Allow reception of frames bigger than 1522 bytes
The FEC Receive Control Register has a 14 bit field indicating the
longest frame that may be received. It is being set to 1522. Frames
longer than this are discarded, but counted as being in error.
When using DSA, frames from the switch has an additional header,
either 4 or 8 bytes if a Marvell switch is used. Thus a full MTU frame
of 1522 bytes received by the switch on a port becomes 1530 bytes when
passed to the host via the FEC interface.
Change the maximum receive size to 2048 - 64, where 64 is the maximum
rx_alignment applied on the receive buffer for AVB capable FEC
cores. Use this value also for the maximum receive buffer size. The
driver is already allocating a receive SKB of 2048 bytes, so this
change should not have any significant effects.
Tested on imx51, imx6, vf610.
Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
This series fix the MDIO interface for the lan9303 DSA driver.
Bugs found after testing on actual HW.
This series is extracted from the first patch of my first large
series. Significant changes from that version are:
- use mdiobus_write_nested, mdiobus_read_nested.
- EXPORT lan9303_indirect_phy_ops
Unfortunately I do not have access to i2c based system for
testing.
Changes from first version:
- Change EXPORT_SYMBOL to EXPORT_SYMBOL_GPL
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Indirect access (PMI) to phy register only work in I2C mode. In
MDIO mode phy registers must be accessed directly. Introduced
struct lan9303_phy_ops to handle the two modes.
Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Preparing for the following fix of MDIO phy access:
Renamed functions that access PHY 1 and 2 indirectly through PMI
registers.
lan9303_port_phy_reg_wait_for_completion() to
lan9303_indirect_phy_wait_for_completion()
lan9303_port_phy_reg_read() to
lan9303_indirect_phy_read()
lan9303_port_phy_reg_write() to
lan9303_indirect_phy_write()
Also changed "val" parameter of lan9303_indirect_phy_write() to u16,
for clarity.
Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: dsa: lan9303: Multiply by 4 to get MDIO register
lan9303_mdio_write()/_read() must multiply register number by 4 to get
offset.
Added some commments to the register definitions.
Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: dsa: lan9303: Fix lan9303_detect_phy_setup() for MDIO
Handle that MDIO read with no response return 0xffff.
Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 30 Jul 2017 06:23:45 +0000 (23:23 -0700)]
Merge branch 'ethtool-fec'
Roopa Prabhu says:
====================
ethtool: support for forward error correction mode setting on a link
Forward Error Correction (FEC) modes i.e Base-R
and Reed-Solomon modes are introduced in 25G/40G/100G standards
for providing good BER at high speeds. Various networking devices
which support 25G/40G/100G provides ability to manage supported FEC
modes and the lack of FEC encoding control and reporting today is a
source for interoperability issues for many vendors.
FEC capability as well as specific FEC mode i.e. Base-R
or RS modes can be requested or advertised through bits D44:47 of base link
codeword.
This patch set intends to provide option under ethtool to manage and
report FEC encoding settings for networking devices as per IEEE 802.3
bj, bm and by specs.
v2 :
- minor patch format fixes and typos pointed out by Andrew
- there was a pending discussion on the use of 'auto' vs
'automatic' for fec settings. I have left it as 'auto'
because in most cases today auto is used in place of
automatic to represent automatically generated values.
We use it in other networking config too. I would prefer
leaving it as auto.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ethtool: add support for forward error correction modes
Forward Error Correction (FEC) modes i.e Base-R
and Reed-Solomon modes are introduced in 25G/40G/100G standards
for providing good BER at high speeds. Various networking devices
which support 25G/40G/100G provides ability to manage supported FEC
modes and the lack of FEC encoding control and reporting today is a
source for interoperability issues for many vendors.
FEC capability as well as specific FEC mode i.e. Base-R
or RS modes can be requested or advertised through bits D44:47 of
base link codeword.
This patch set intends to provide option under ethtool to manage
and report FEC encoding settings for networking devices as per
IEEE 802.3 bj, bm and by specs.
set-fec/show-fec option(s) are designed to provide control and
report the FEC encoding on the link.
Encoding: Types of encoding
Off : Turning off any encoding
RS : enforcing RS-FEC encoding on supported speeds
BaseR : enforcing Base R encoding on supported speeds
Auto : IEEE defaults for the speed/medium combination
Here are a few examples of what we would expect if encoding=auto:
- if autoneg is on, we are expecting FEC to be negotiated as on or off
as long as protocol supports it
- if the hardware is capable of detecting the FEC encoding on it's
receiver it will reconfigure its encoder to match
- in absence of the above, the configuration would be set to IEEE
defaults.
>From our understanding , this is essentially what most hardware/driver
combinations are doing today in the absence of a way for users to
control the behavior.
SHOW FEC option:
root@tor: ethtool --show-fec swp1
FEC parameters for swp1:
Active FEC encodings: RS
Configured FEC encodings: RS | BaseR
ETHTOOL DEVNAME output modification:
ethtool devname output:
root@tor:~# ethtool swp1
Settings for swp1:
root@hpe-7712-03:~# ethtool swp18
Settings for swp18:
Supported ports: [ FIBRE ]
Supported link modes: 40000baseCR4/Full
40000baseSR4/Full
40000baseLR4/Full
100000baseSR4/Full
100000baseCR4/Full
100000baseLR4_ER4/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: [RS | BaseR | None | Not reported]
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Advertised FEC modes: [RS | BaseR | None | Not reported]
<<<< One or more FEC modes
Speed: 100000Mb/s
Duplex: Full
Port: FIBRE
PHYAD: 106
Transceiver: internal
Auto-negotiation: off
Link detected: yes
This patch includes following changes
a) New ETHTOOL_SFECPARAM/SFECPARAM API, handled by
the new get_fecparam/set_fecparam callbacks, provides support
for configuration of forward error correction modes.
b) Link mode bits for FEC modes i.e. None (No FEC mode), RS, BaseR/FC
are defined so that users can configure these fec modes for supported
and advertising fields as part of link autonegotiation.
Signed-off-by: Vidya Sagar Ravipati <vidya.chowdary@gmail.com> Signed-off-by: Dustin Byford <dustin@cumulusnetworks.com> Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
netvsc: minor fixes and optimization
This is a subset of earlier submission with a few more fixes
found during testing. The are two small optimizations, one is to
better manage the receive completion ring, and the other is removing
one unneeded level of indirection.
Will submit the improved VF support and buffer sizing in a later
patch so they get more review.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
If setting receive buffer fails, the error unwind would cause
kernel panic because it was not correctly doing RCU and NAPI
unwind. RCU'd pointer needs to be reset to NULL, and NAPI needs
to be disabled not deleted.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Optimize how receive completion ring are managed.
* Allocate only as many slots as needed for all buffers from host
* Allocate before setting up sub channel for better error detection
* Don't need to keep copy of initial receive section message
* Precompute the watermark for when receive flushing is needed
* Replace division with conditional test
* Replace atomic per-device variable with per-channel check.
* Handle corner case where receive completion send
fails if ring buffer to host is full.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This includes a bunch of fixups for issues reported by
lockdep.
* ethtool routines can assume RTNL
* send is done with RCU lock (and BH disable)
* avoid refetching internal device struct (netvsc)
instead pass it as a parameter.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Felix Manlunas [Thu, 27 Jul 2017 19:32:28 +0000 (12:32 -0700)]
liquidio: bump up driver version to match newer NIC firmware
Bump up driver version to match newer NIC firmware. Also update
nic_rx_stats (a struct common to host driver and firmware) by adding a new
field: fw_total_fwd_bytes.
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
bnxt_en depends on MAY_USE_DEVLINK; this is used to force bnxt_en
to be =m when DEVLINK is =m.
Now, bnxt_re selects bnxt_en. Unless bnxt_re also explicitly calls
out dependency on MAY_USE_DEVLINK, Kconfig does not force bnxt_re
to be =m when DEVLINK is =m, causing the following error:
drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.o: In function
`bnxt_dl_register':
bnxt_vfr.c:(.text+0x1440): undefined reference to `devlink_alloc'
bnxt_vfr.c:(.text+0x14c0): undefined reference to `devlink_register'
bnxt_vfr.c:(.text+0x14e0): undefined reference to `devlink_free'
drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.o: In function
`bnxt_dl_unregister':
bnxt_vfr.c:(.text+0x1534): undefined reference to `devlink_unregister'
bnxt_vfr.c:(.text+0x153c): undefined reference to `devlink_free'
Fix this by adding MAY_USE_DEVLINK dependency in bnxt_re.
Fixes: 4ab0c6a8ffd7 ("bnxt_en: add support to enable VF-representors") Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sathya Perla <sathya.perla@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
John Fastabend [Thu, 27 Jul 2017 00:32:07 +0000 (17:32 -0700)]
bpf: testing: fix devmap tests
Apparently through one of my revisions of the initial patches
series I lost the devmap test. We can add more testing later but
for now lets fix the simple one we have.
Fixes: 546ac1ffb70d "bpf: add devmap, a map for storing net device references" Reported-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 29 Jul 2017 18:22:58 +0000 (11:22 -0700)]
Merge branch 'smc-get-rid-of-unsafe_global_rkey'
Ursula Braun says:
====================
net/smc: get rid of unsafe_global_rkey
The smc code uses the unsafe_global_rkey, exposing all memory for
remote reads and writes once a connection is established.
Here is now a patch series to get rid of unsafe_global_rkey usage.
Main idea is to switch to SG-logic and separate memory regions for RMBs.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
net/smc: common functions for RMBs and send buffers
Creation and deletion of SMC receive and send buffers shares a high
amount of common code . This patch introduces common functions to get
rid of duplicate code.
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Now separate memory regions are created and registered for separate
RMBs. The unsafe_global_rkey of the protection domain is no longer
used. Thus the exposing memory warning can be removed.
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
SMC currently uses the unsafe_global_rkey of the protection domain,
which exposes all memory for remote reads and writes once a connection
is established. This patch introduces separate memory regions with
separate rkeys for every RMB. Now the unsafe_global_rkey of the
protection domain is no longer needed.
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The follow-on patch makes use of ib_map_mr_sg() when introducing
separate memory regions for RMBs. This function is based on
scatterlists; thus this patch introduces scatterlists for RMBs.
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net/smc: serialize connection creation in all cases
If a link group for a new server connection exists already, the mutex
serializing the determination of link groups is given up early.
The coming registration of memory regions benefits from the serialization
as well, if the mutex is held till connection creation is finished.
This patch postpones the unlocking of the link group creation mutex.
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The inet6_protocol structure is only passed as the first argument to
inet6_add_protocol or inet6_del_protocol, both of which are declared as
const. Thus the inet6_protocol structure itself can be const.
Done with the help of Coccinelle.
// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct inet6_protocol i@p = { ... };
@ok1@
identifier r.i;
expression e1;
position p;
@@
Julia Lawall [Fri, 28 Jul 2017 20:18:58 +0000 (22:18 +0200)]
l2tp: constify inet6_protocol structures
The inet6_protocol structure is only passed as the first argument to
inet6_add_protocol or inet6_del_protocol, both of which are declared as
const. Thus the inet6_protocol structure itself can be const.
Also drop __read_mostly on the newly const structure.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Fri, 28 Jul 2017 20:18:57 +0000 (22:18 +0200)]
ipv6: constify inet6_protocol structures
The inet6_protocol structure is only passed as the first argument to
inet6_add_protocol or inet6_del_protocol, both of which are declared as
const. Thus the inet6_protocol structure itself can be const.
Also drop __read_mostly where present on the newly const structures.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Rick Farrington [Wed, 26 Jul 2017 19:11:09 +0000 (12:11 -0700)]
liquidio: cleanup: removed cryptic and misleading macro
Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Rick Farrington [Wed, 26 Jul 2017 19:10:48 +0000 (12:10 -0700)]
liquidio: standardization: use min_t instead of custom macro
Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Since commit a390d1f379cf ("phylib: convert state_queue work to
delayed_work"), the PHYLIB state machine was converted to use delayed
workqueues, yet some functions were still referencing the PHY library
timer in their comments, fix that and remove the now unused
linux/timer.h include.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
We have been pondering for some time how to support loading different
application firmwares onto NFP. We want to support both users selecting
one of the firmware images provided by Netronome (which are optimized
for different use cases each) as well as firmware images created by
users themselves or other companies.
In the end we decided to go with the simplest solution - depending on
the right firmware image being placed in /lib/firmware. This vastly
simplifies driver logic and also doesn't require any new API.
Different NICs on one system may want to run different applications
therefore we first try to load firmware specific to the device (by
serial number of PCI slot) and if not present try the device model
based name we have been using so far.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Wed, 26 Jul 2017 18:09:48 +0000 (11:09 -0700)]
nfp: only use direct firmware requests
request_firmware() will fallback to user space helper and may cause
long delays when driver is loaded if udev doesn't correctly handle
FW requests. Since we never really made use of the user space
helper functionality switch to the simpler request_firmware_direct()
call. The side effect of this change is that no warning will be
printed when the FW image does not exists. To help users figure
out which FW file is missing print a info message when we request
each file.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Wed, 26 Jul 2017 18:09:47 +0000 (11:09 -0700)]
nfp: look for firmware image by device serial number and PCI name
We generally look up firmware by card type, but that doesn't allow
users who have more than one card of the same type in their system
to select firmware per adapter.
Unfortunately user space firmware helper seems fraught with
difficulties and to be on its way out. In particular support for
handling firmware uevents have been dropped from systemd and most
distributions don't enable the FW fallback by default any more.
To allow users selecting firmware for a particular device look up
firmware names by serial and pci_name(). Use the direct lookup to
disable generating uevents when enabled in Kconfig and not print
any warnings to logs if adapter-specific files are missing. Users
can place in /lib/firmware/netronome files named:
Jakub Kicinski [Wed, 26 Jul 2017 18:09:46 +0000 (11:09 -0700)]
nfp: remove the probe deferral when FW not present
We use a hack to defer probe when firmware was not pre-loaded
or found on disk. This helps in case users forgot to include
firmware in initramfs, the driver will most likely get another
shot at probing after real root is mounted.
This is not for what EPROBE_DEFER is supposed to be used, and
when FW is completely missing every time new device is probed
NFP will reprobe spamming kernel logs.
Remove this hack, users will now have to make sure the right
firmware image is present in initramfs if nfp.ko is placed
there or built in.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 27 Jul 2017 07:05:23 +0000 (00:05 -0700)]
Merge branch 'qed-next'
Manish Chopra says:
====================
qed/qede: Enhancements
This patch series adds these below features support in qed/qede
1) Ntuple filter configuration [via ethtool -n/N]
2) EEE (energy efficient ethernet) support [ethtool --set-eee/show-eee]
3) Coalescing configuration support for VFs [via ethtool -c/C]
Please consider applying this to "net-next"
V1->V2:
* Fixes below Kbuild test robot warning.
drivers/net//ethernet/qlogic/qed/qed_l2.c:
In function 'qed_get_queue_coalesce':
drivers/net//ethernet/qlogic/qed/qed_l2.c:2137:8: error:
implicit declaration of function 'qed_vf_pf_get_coalesce'
[-Werror=implicit-function-declaration]
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Maximum coalesce per Rx/Tx queue is extended from
255 to 511.
Signed-off-by: Rahul Verma <rahul.verma@cavium.com> Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Retrieve the actual coalesce value from hardware for every Rx/Tx
queue, instead of Rx/Tx coalesce value cached during set coalesce.
Signed-off-by: Rahul Verma <Rahul.Verma@cavium.com> Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch add the ethtool support to set RX/Tx coalesce
value to the VF associated Rx/Tx queues.
Signed-off-by: Rahul Verma <Rahul.Verma@cavium.com> Signed-off-by: Yuval Mintz <yuval.mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
qede: Add ethtool support for Energy efficient ethernet.
The patch adds ethtool callback implementations for querying/configuring
the Energy Efficient Ethernet (EEE) parameters.
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>
projects / mirror_ubuntu-jammy-kernel.git / log