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In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Warning level 2 was used: -Wimplicit-fallthrough=2
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Warning level 2 was used: -Wimplicit-fallthrough=2
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use 'chip_ver' rather than 'chip' to check if the card
is T5.
Fixes: e8d452923a ("cxgb4: clean up init_one")
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variables adv and lpa are being assigned but are never used hence they
are redundant and can be removed. Also remove the unncessary mii_reads
too.
Cleans up clang warnings:
warning: variable 'lpa' set but not used [-Wunused-but-set-variable]
warning: variable 'adv' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Geert Uytterhoeven says:
====================
net: ethernet: Miscellaneous Kconfig and Makefile cleanups
This patch series contains a few Kconfig and Makefile cleanups w.r.t.
Ethernet vendors.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Both SFC and SFC_FALCON depend on NET_VENDOR_SOLARFLARE, hence use the
latter to decide whether to descend into the sfc subdirectory.
Move the rule to descend into sfc/falcon to the sfc subdirectory.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Martin Habets <mhabets@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The vendor guard Kconfig symbols for Cadence and Packet Engines use a
"NET_" prefix, while all other vendor guards use a "NET_VENDOR_"
prefix. Hence make them consistent with the rest, and add the missing
trailing "S" for Packet Engines while at it.
As these options don't directly affect the kernel build, and default to
"y", this change has no impact on kernels built with existing
(def)configs.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enabling NET_VENDOR_* Kconfig options does not directly affect the
kernel build. Hence NET_VENDOR_AURORA should default to yes, like other
NET_VENDOR_* options.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variables consumer, cmd_desc, end_cnt and no_of_desc are being assigned
but are never used hence they are redundant and can be removed.
Cleans up clang warnings:
warning: variable 'consumer' set but not used [-Wunused-but-set-variable]
warning: variable 'cmd_desc' set but not used [-Wunused-but-set-variable]
warning: variable 'end_cnt' set but not used [-Wunused-but-set-variable]
warning: variable 'no_of_desc' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Moshe Shemesh says:
====================
Add configuration parameters support
Add configuration parameters setting through devlink.
Each device registers supported configuration parameters table.
Each parameter can be either generic or driver specific.
The user can retrieve data on these parameters by "devlink param show"
command and can set new value to a parameter by "devlink param set"
command.
The parameters can be set in different configuration modes:
runtime - set while driver is running, no reset required.
driverinit - applied while driver initializes, requires restart
driver by devlink reload command.
permanent - written to device's non-volatile memory, hard reset required.
The patches at the end of the patchset introduce few params that are using
the introduced infrastructure on mlx4 and bnxt.
Command examples and output:
pci/0000:81:00.0:
name internal_error_reset type generic
values:
cmode runtime value true
cmode driverinit value true
name max_macs type generic
values:
cmode driverinit value 128
name enable_64b_cqe_eqe type driver-specific
values:
cmode driverinit value true
name enable_4k_uar type driver-specific
values:
cmode driverinit value false
pci/0000:81:00.0:
name internal_error_reset type generic
values:
cmode runtime value false
cmode driverinit value true
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Create initial devlink parameters table for bnxt_en.
Table consists of a permanent generic parameter.
enable_sriov - Enables Single-Root Input/Output Virtualization(SR-IOV)
characteristic of the device.
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
enable_sriov - Enables Single-Root Input/Output Virtualization(SR-IOV)
characteristic of the device.
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add mlx4_devlink_reload() to support devlink reload operation.
Add mlx4_devlink_param_load_driverinit_values() to load values which
were set using driverinit configuration mode.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Create initial parameters table for mlx4.
The table consists of two generic parameters and two driver-specific
parameters.
Generic:
internal_err_reset - Enable reset device on internal errors. This
parameter can be configured on mlx4 either on runtime or during driver
initialization.
max_macs - Max number of MACs per ETH port. For mlx4 this parameter
value range is between 1 and 128. This parameter can be configured on
mlx4 only during driver initialization.
Driver specific:
enable_64b_cqe_eqe - Enable 64 byte CQEs/EQEs when the FW supports it.
This parameter can be configured on mlx4 only during driver
initialization.
enable_4k_uar - Enable using 4K UAR. This parameter can be configured on
mlx4 only during driver initialization.
Register the parameters table on mlx4_init_one() and unregister on
mlx4_remove_one().
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add 2 first generic parameters to devlink configuration parameters set:
internal_err_reset - When set enables reset device on internal errors.
max_macs - max number of MACs per ETH port.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add devlink_param_notify() function to support devlink param notifications.
Add notification call to devlink param set, register and unregister
functions.
Add devlink_param_value_changed() function to enable the driver notify
devlink on value change. Driver should use this function after value was
changed on any configuration mode part to driverinit.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
"driverinit" configuration mode value is held by devlink to enable
the driver query the value after reload. Two additional functions
added to help the driver get/set the value from/to devlink:
devlink_param_driverinit_value_set() and
devlink_param_driverinit_value_get().
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add param set command to set value for a parameter.
Value can be set to any of the supported configuration modes.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add param get command which gets data per parameter.
Option to dump the parameters data per device.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Define configuration parameters data structure.
Add functions to register and unregister the driver supported
configuration parameters table.
For each parameter registered, the driver should fill all the parameter's
fields. In case the only supported configuration mode is "driverinit"
the parameter's get()/set() functions are not required and should be set
to NULL, for any other configuration mode, these functions are required
and should be set by the driver.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variable channel is being assigned but is never used hence it is
redundant and can be removed.
Cleans up two clang warnings:
warning: variable 'channel' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variables my_epid and max_epid are currently assigned and not being
used - however, I suspect they were intended to be used in the for-loops
to reduce the dereferencing of hw. Replace hw->my_epid and hw->max_epid
with these variables.
Cleans up clang warnings:
warning: variable 'my_epid' set but not used [-Wunused-but-set-variable]
variable 'max_epid' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pointer skb is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'skb' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pointer ndev is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'ndev' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes the following sparse warnings:
drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c:525:5: warning:
symbol 'hw_atl_utils_mpi_set_speed' was not declared. Should it be static?
drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c:536:5: warning:
symbol 'hw_atl_utils_mpi_set_state' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes the following sparse warnings:
drivers/net/dsa/vitesse-vsc73xx.c:1054:6: warning:
symbol 'vsc73xx_get_strings' was not declared. Should it be static?
drivers/net/dsa/vitesse-vsc73xx.c:1113:5: warning:
symbol 'vsc73xx_get_sset_count' was not declared. Should it be static?
drivers/net/dsa/vitesse-vsc73xx.c:1122:6: warning:
symbol 'vsc73xx_get_ethtool_stats' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Trivial fix to spelling mistake in dev_err error message.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
After commit 07d78363dc ("net: Convert NAPI gro list into a small hash
table.")' there is 8 hash buckets, which allows more flows to be held for
merging. but MAX_GRO_SKBS, the total held skb for merging, is 8 skb still,
limit the hash table performance.
keep MAX_GRO_SKBS as 8 skb, but limit each hash list length to 8 skb, not
the total 8 skb
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When runtime-suspending we configure WoL w/o touching saved_wolopts.
If saved_wolopts == 0 we would power down the PHY in this case what's
wrong. Therefore we have to check the actual chip WoL settings here.
Fixes: 433f9d0ddc ("r8169: improve saved_wolopts handling")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since callees (ip_rcv_core() and ip_rcv_finish_core()) might free or steal
the skb, we can't use the list_cut_before() method; we can't even do a
list_del(&skb->list) in the drop case, because skb might have already been
freed and reused.
So instead, take each skb off the source list before processing, and add it
to the sublist afterwards if it wasn't freed or stolen.
Fixes: 5fa12739a5 net: ipv4: listify ip_rcv_finish
Fixes: 17266ee939 net: ipv4: listified version of ip_rcv
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In highly constrained resources environments (like the 124VF
T5 and 248VF T6 configurations), PF4 may not have very many
resources at all and we need to adapt to whatever we've been
allocated, this patch adds support to get the provisioned
resources.
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variable 'irq' is being assigned but is never used hence it is
and can be removed.
Cleans up clang warning:
warning: variable 'irq' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variable old_vlan is being assigned but is never used hence it is
and can be removed.
Cleans up clang warning:
warning: variable 'old_vlan' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pointer 'name' is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'name' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pointer 'info' is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'info' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pointer pfhwdev is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'pfhwdev' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variable 'protocol' is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'protocol' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variable last_rule_idx is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'last_rule_idx' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variable 'inc' is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'inc' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pointer req and variable func are being assigned but are never used
hence they are redundant and can be removed.
Cleans up clang warnings:
warning: variable 'req' set but not used [-Wunused-but-set-variable]
warning: variable 'func' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variable 'freed' is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'freed' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pointer rxd is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'rxb' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variable old_duplex is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'old_duplex' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pointer rxdesc is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'rxdesc' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Variable 'off' is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'off' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jesus Sanchez-Palencia says:
====================
Scheduled packet Transmission: ETF
Changes since v1:
- moved struct sock_txtime from socket.h to uapi net_tstamp.h;
- sk_clockid was changed from u16 to u8;
- sk_txtime_flags was changed from u16 to a u8 bit field in struct sock;
- the socket option flags are now validated in sock_setsockopt();
- added SO_EE_ORIGIN_TXTIME;
- sockc.transmit_time is now initialized from all IPv4 Tx paths;
- added support for the IPv6 Tx path;
Overview
========
This work consists of a set of kernel interfaces that can be used by
applications that require (time-based) Scheduled Tx of packets.
It is comprised by 3 new components to the kernel:
- SO_TXTIME: socket option + cmsg programming interfaces.
- etf: the "earliest txtime first" qdisc, that provides per-queue
TxTime-based scheduling. This has been renamed from 'tbs' to
'etf' to better describe its functionality.
- taprio: the "time-aware priority scheduler" qdisc, that provides
per-port Time-Aware scheduling;
This patchset is providing the first 2 components, which have been
developed for longer. The taprio qdisc will be shared as an RFC separately
(shortly).
Note that this series is a follow up of the "Time based packet
transmission" RFCv3 [1].
etf (formerly known as 'tbs')
=============================
For applications/systems that the concept of time slices isn't precise
enough, the etf qdisc allows applications to control the instant when
a packet should leave the network controller. When used in conjunction
with taprio, it can also be used in case the application needs to
control with greater guarantee the offset into each time slice a packet
will be sent. Another use case of etf, is when only a small number of
applications on a system are time sensitive, so it can then be used
with a more traditional root qdisc (like mqprio).
The etf qdisc is designed so it buffers packets until a configurable
time before their deadline (Tx time). The qdisc uses a rbtree internally
so the buffered packets are always 'ordered' by their txtime (deadline)
and will be dequeued following the earliest txtime first.
It relies on the SO_TXTIME API set for receiving the per-packet timestamp
(txtime) as well as the config flags for each socket: the clockid to be
used as a reference, if the expected mode of txtime for that socket is
deadline or strict mode, and if packet drops should be reported on the
socket's error queue or not.
The qdisc will drop any packets with a Tx time in the past, or if a
packet expires while waiting for being dequeued. Drops can be reported
as errors back to userspace through the socket's error queue.
Example configuration:
$ tc qdisc add dev enp2s0 parent 100:1 etf offload delta 200000 \
clockid CLOCK_TAI
Here, the Qdisc will use HW offload for the txtime control.
Packets will be dequeued by the qdisc "delta" (200000) nanoseconds before
their transmission time. Because this will be using HW offload and
since dynamic clocks are not supported by hrtimers, the system clock
and the PHC clock must be synchronized for this mode to behave as expected.
A more complete example can be found here, with instructions of how to
test it:
https://gist.github.com/jeez/bd3afeff081ba64a695008dd8215866f [2]
Note that we haven't modified the qdisc so it uses a timerqueue because
the modification needed was increasing the number of cachelines of a sk_buff.
This series is also hosted on github and can be found at [3].
The companion iproute2 patches can be found at [4].
[1] https://patchwork.ozlabs.org/cover/882342/
[2] github doesn't make it clear, but the gist can be cloned like this:
$ git clone https://gist.github.com/jeez/bd3afeff081ba64a695008dd8215866f scheduled-tx-tests
[3] https://github.com/jeez/linux/tree/etf-v2
[4] https://github.com/jeez/iproute2/tree/etf-v2
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Use the socket error queue for reporting dropped packets if the
socket has enabled that feature through the SO_TXTIME API.
Packets are dropped either on enqueue() if they aren't accepted by the
qdisc or on dequeue() if the system misses their deadline. Those are
reported as different errors so applications can react accordingly.
Userspace can retrieve the errors through the socket error queue and the
corresponding cmsg interfaces. A struct sock_extended_err* is used for
returning the error data, and the packet's timestamp can be retrieved by
adding both ee_data and ee_info fields as e.g.:
((__u64) serr->ee_data << 32) + serr->ee_info
This feature is disabled by default and must be explicitly enabled by
applications. Enabling it can bring some overhead for the Tx cycles
of the application.
Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement HW offload support for SO_TXTIME through igb's Launchtime
feature. This is done by extending igb_setup_tc() so it supports
TC_SETUP_QDISC_ETF and configuring i210 so time based transmit
arbitration is enabled.
The FQTSS transmission mode added before is extended so strict
priority (SP) queues wait for stream reservation (SR) ones.
igb_config_tx_modes() is extended so it can support enabling/disabling
Launchtime following the previous approach used for the credit-based
shaper (CBS).
As the previous flow, FQTSS transmission mode is enabled automatically
by the driver once Launchtime (or CBS, as before) is enabled.
Similarly, it's automatically disabled when the feature is disabled
for the last queue that had it setup on.
The driver just consumes the transmit times from the skbuffs directly,
so no special handling is done in case an 'invalid' time is provided.
We assume this has been handled by the ETF qdisc already.
Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, skb_tx_timestamp() is being called before the Tx
descriptors are prepared in igb_xmit_frame_ring(), which happens
during either the igb_tso() or igb_tx_csum() calls.
Given that now the skb->tstamp might be used to carry the timestamp
for SO_TXTIME, we must only call skb_tx_timestamp() after the
information has been copied into the Tx descriptors.
Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
