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d8eb7ad5e4
linux/drivers/net/ethernet
History
Jesse Brandeburg d8eb7ad5e4 ice: update dim usage and moderation 
The driver was having trouble with unreliable latency when doing single
threaded ping-pong tests. This was root caused to the DIM algorithm
landing on a too slow interrupt value, which caused high latency, and it
was especially present when queues were being switched frequently by the
scheduler as happens on default setups today.

In attempting to improve this, we allow the upper rate limit for
interrupts to move to rate limit of 4 microseconds as a max, which means
that no vector can generate more than 250,000 interrupts per second. The
old config was up to 100,000. The driver previously tried to program the
rate limit too frequently and if the receive and transmit side were both
active on the same vector, the INTRL would be set incorrectly, and this
change fixes that issue as a side effect of the redesign.

This driver will operate from now on with a slightly changed DIM table
with more emphasis towards latency sensitivity by having more table
entries with lower latency than with high latency (high being >= 64
microseconds).

The driver also resets the DIM algorithm state with a new stats set when
there is no work done and the data becomes stale (older than 1 second),
for the respective receive or transmit portion of the interrupt.

Add a new helper for setting rate limit, which will be used more
in a followup patch.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-10-19 10:45:16 -07:00
..
3com ethernet: replace netdev->dev_addr 16bit writes 2021-10-14 09:22:27 -07:00
8390 ethernet: 8390: remove direct netdev->dev_addr writes 2021-10-09 11:46:57 +01:00
actions ethernet: constify references to netdev->dev_addr in drivers 2021-10-14 09:22:11 -07:00
adaptec ethernet: adaptec: use eth_hw_addr_set() 2021-10-16 08:53:45 +01:00
aeroflex ethernet: aeroflex: use eth_hw_addr_set() 2021-10-16 08:53:45 +01:00
agere ethernet: use eth_hw_addr_set() instead of ether_addr_copy() 2021-10-02 14:18:25 +01:00
alacritech ethernet: constify references to netdev->dev_addr in drivers 2021-10-14 09:22:11 -07:00
allwinner ethernet: use of_get_ethdev_address() 2021-10-07 13:39:51 +01:00
alteon ethernet: alteon: use eth_hw_addr_set() 2021-10-16 08:53:46 +01:00
altera ethernet: constify references to netdev->dev_addr in drivers 2021-10-14 09:22:11 -07:00
amazon ethernet: use eth_hw_addr_set() instead of ether_addr_copy() 2021-10-02 14:18:25 +01:00
amd ethernet: amd: use eth_hw_addr_set() 2021-10-16 08:53:46 +01:00
apm ethernet: constify references to netdev->dev_addr in drivers 2021-10-14 09:22:11 -07:00
apple ethernet: replace netdev->dev_addr assignment loops 2021-10-14 09:22:25 -07:00
aquantia ethernet: aquantia: use eth_hw_addr_set() 2021-10-16 08:53:46 +01:00
arc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-10-14 16:50:14 -07:00
atheros ethernet: make use of eth_hw_addr_random() where appropriate 2021-10-14 09:22:15 -07:00
broadcom ethernet: Remove redundant statement 2021-10-19 13:10:44 +01:00
brocade ethernet: Remove redundant 'flush_workqueue()' calls 2021-10-10 11:33:15 +01:00
cadence ethernet: manually convert memcpy(dev_addr,..., sizeof(addr)) 2021-10-14 09:22:19 -07:00
calxeda ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
cavium ethernet: Remove redundant 'flush_workqueue()' calls 2021-10-10 11:33:15 +01:00
chelsio tcp: switch orphan_count to bare per-cpu counters 2021-10-15 11:28:34 +01:00
cirrus ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
cisco ethernet: enic: use eth_hw_addr_set() 2021-10-16 08:53:46 +01:00
cortina ethernet: make use of eth_hw_addr_random() where appropriate 2021-10-14 09:22:15 -07:00
davicom ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
dec net: tulip: winbond-840: fix build for UML 2021-10-14 19:18:53 -07:00
dlink ethernet: replace netdev->dev_addr 16bit writes 2021-10-14 09:22:27 -07:00
emulex ethernet: constify references to netdev->dev_addr in drivers 2021-10-14 09:22:11 -07:00
ezchip ethernet: use of_get_ethdev_address() 2021-10-07 13:39:51 +01:00
faraday ethernet: make more use of device_get_ethdev_address() 2021-10-07 13:39:51 +01:00
freescale ethernet: fec: use eth_hw_addr_gen() 2021-10-19 12:46:25 +01:00
fujitsu ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
google gve: Track RX buffer allocation failures 2021-10-11 23:25:36 +01:00
hisilicon ethernet: make use of eth_hw_addr_random() where appropriate 2021-10-14 09:22:15 -07:00
huawei ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
i825xx ethernet: replace netdev->dev_addr assignment loops 2021-10-14 09:22:25 -07:00
ibm ethernet: ibmveth: use ether_addr_to_u64() 2021-10-16 08:53:46 +01:00
intel ice: update dim usage and moderation 2021-10-19 10:45:16 -07:00
litex ethernet: use of_get_ethdev_address() 2021-10-07 13:39:51 +01:00
marvell ethernet: prestera: use eth_hw_addr_gen() 2021-10-19 12:46:24 +01:00
mediatek ethernet: constify references to netdev->dev_addr in drivers 2021-10-14 09:22:11 -07:00
mellanox ethernet: mlxsw: use eth_hw_addr_gen() 2021-10-19 12:46:25 +01:00
micrel ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
microchip ethernet: sparx5: use eth_hw_addr_gen() 2021-10-19 12:46:25 +01:00
microsoft Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-10-14 16:50:14 -07:00
moxa ethernet: use eth_hw_addr_set() for dev->addr_len cases 2021-10-05 13:16:48 +01:00
mscc ethernet: ocelot: use eth_hw_addr_gen() 2021-10-19 12:46:24 +01:00
myricom ethernet: replace netdev->dev_addr assignment loops 2021-10-14 09:22:25 -07:00
natsemi ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
neterion Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-10-14 16:50:14 -07:00
netronome net: sched: Merge Qdisc::bstats and Qdisc::cpu_bstats data types 2021-10-18 12:54:41 +01:00
ni ethernet: use eth_hw_addr_set() instead of ether_addr_copy() 2021-10-02 14:18:25 +01:00
nvidia ethernet: forcedeth: remove direct netdev->dev_addr writes 2021-10-09 11:46:56 +01:00
nxp ethernet: lpc: use eth_hw_addr_set() 2021-10-19 12:41:47 +01:00
oki-semi ethernet: use eth_hw_addr_set() for dev->addr_len cases 2021-10-05 13:16:48 +01:00
packetengines ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
pasemi ethernet: manually convert memcpy(dev_addr,..., sizeof(addr)) 2021-10-14 09:22:19 -07:00
pensando Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-10-14 16:50:14 -07:00
qlogic ethernet: netxen: use eth_hw_addr_set() 2021-10-19 12:41:47 +01:00
qualcomm ethernet: make use of eth_hw_addr_random() where appropriate 2021-10-14 09:22:15 -07:00
rdc ethernet: replace netdev->dev_addr 16bit writes 2021-10-14 09:22:27 -07:00
realtek ethernet: r8169: use eth_hw_addr_set() 2021-10-19 12:41:47 +01:00
renesas ethernet: renesas: use eth_hw_addr_set() 2021-10-19 12:41:47 +01:00
rocker ethernet: rocker: use eth_hw_addr_set() 2021-10-19 12:41:47 +01:00
samsung ethernet: sxgbe: use eth_hw_addr_set() 2021-10-19 12:41:48 +01:00
seeq ethernet: use eth_hw_addr_set() for dev->addr_len cases 2021-10-05 13:16:48 +01:00
sfc sfc: Fix reading non-legacy supported link modes 2021-10-18 14:28:02 +01:00
sgi ethernet: use eth_hw_addr_set() for dev->addr_len cases 2021-10-05 13:16:48 +01:00
silan ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
sis ethernet: sis900: use eth_hw_addr_set() 2021-10-19 12:41:48 +01:00
smsc ethernet: smsc: use eth_hw_addr_set() 2021-10-19 12:41:48 +01:00
socionext net: ethernet: ave: Add compatible string and SoC-dependent data for NX1 SoC 2021-10-18 13:10:08 +01:00
stmicro Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-10-14 16:50:14 -07:00
sun ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
synopsys ethernet: constify references to netdev->dev_addr in drivers 2021-10-14 09:22:11 -07:00
tehuti ethernet: use eth_hw_addr_set() for dev->addr_len cases 2021-10-05 13:16:48 +01:00
ti ethernet: remove random_ether_addr() 2021-10-14 09:24:09 -07:00
toshiba ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
tundra dev_ioctl: split out ndo_eth_ioctl 2021-07-27 20:11:45 +01:00
via ethtool: extend coalesce setting uAPI with CQE mode 2021-08-24 07:38:29 -07:00
wiznet net: w5100: Make w5100_remove() return void 2021-10-18 12:59:12 +01:00
xilinx ethernet: constify references to netdev->dev_addr in drivers 2021-10-14 09:22:11 -07:00
xircom ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
xscale net: ethernet: ixp4xx: Make use of dma_pool_zalloc() instead of dma_pool_alloc/memset() 2021-10-19 13:24:26 +01:00
dnet.c ethernet: manually convert memcpy(dev_addr,..., sizeof(addr)) 2021-10-14 09:22:19 -07:00
dnet.h
ec_bhf.c ethernet: ec_bhf: use eth_hw_addr_set() 2021-10-16 08:53:46 +01:00
ethoc.c ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
fealnx.c ethernet: use eth_hw_addr_set() in unmaintained drivers 2021-10-18 13:20:38 +01:00
jme.c ethernet: use eth_hw_addr_set() for dev->addr_len cases 2021-10-05 13:16:48 +01:00
jme.h
Kconfig net: korina: select CRC32 2021-10-13 13:28:35 -07:00
korina.c ethernet: use of_get_ethdev_address() 2021-10-07 13:39:51 +01:00
lantiq_etop.c net: lantiq: configure the burst length in ethernet drivers 2021-09-15 11:02:01 +01:00
lantiq_xrx200.c ethernet: use of_get_ethdev_address() 2021-10-07 13:39:51 +01:00
Makefile net: Add driver for LiteX's LiteETH network interface 2021-08-26 12:13:52 +01:00