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d6832ca48d
linux/drivers
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Nick Child d6832ca48d ibmveth: Copy tx skbs into a premapped buffer 
Rather than DMA mapping and unmapping every outgoing skb, copy the skb
into a buffer that was mapped during the drivers open function. Copying
the skb and its frags have proven to be more time efficient than
mapping and unmapping. As an effect, performance increases by 3-5
Gbits/s.

Allocate and DMA map one continuous 64KB buffer at `ndo_open`. This
buffer is maintained until `ibmveth_close` is called. This buffer is
large enough to hold the largest possible linnear skb. During
`ndo_start_xmit`, copy the skb and all of it's frags into the continuous
buffer. By manually linnearizing all the socket buffers, time is saved
during memcpy as well as more efficient handling in FW.
As a result, we no longer need to worry about the firmware limitation
of handling a max of 6 frags. So, we only need to maintain 1 descriptor
instead of 6 and can hardcode 0 for the other 5 descriptors during
h_send_logical_lan.

Since, DMA allocation/mapping issues can no longer arise in xmit
functions, we can further reduce code size by removing the need for a
bounce buffer on DMA errors.

Signed-off-by: Nick Child <nnac123@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-30 12:40:22 +01:00
..
accessibility TTY / Serial driver changes for 6.0-rc1 2022-08-08 11:31:40 -07:00
acpi * A performance fix for recent large AMD systems that avoids an ancient 2022-09-26 14:53:38 -07:00
amba ARM: 9229/1: amba: Fix use-after-free in amba_read_periphid() 2022-08-30 11:12:52 +01:00
android Char/Misc driver fixes for 6.0-rc4 2022-09-02 10:50:08 -07:00
ata ata: libata-sata: Fix device queue depth control 2022-09-28 20:47:31 +09:00
atm atm: idt77252: fix use-after-free bugs caused by tst_timer 2022-08-08 20:51:59 -07:00
auxdisplay
base Revert "driver core: Set fw_devlink.strict=1 by default" 2022-09-15 12:44:56 +02:00
bcma
block Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-08 18:38:30 +02:00
bluetooth SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
bus bus: mhi: host: pci_generic: Add a secondary AT port to Telit FN990 2022-09-20 16:07:12 -07:00
cdrom
char /dev/null: add IORING_OP_URING_CMD support 2022-08-26 11:19:44 -04:00
clk Revert "clk: core: Honor CLK_OPS_PARENT_ENABLE for clk gate ops" 2022-08-31 12:06:46 -07:00
clocksource RISC-V: Add Sstc extension support 2022-08-11 14:41:52 -07:00
comedi pci-v5.20-changes 2022-08-04 19:30:35 -07:00
connector
counter counter: 104-quad-8: Fix skipped IRQ lines during events configuration 2022-09-22 14:26:37 +02:00
cpufreq cpufreq: check only freq_table in __resolve_freq() 2022-08-23 20:00:52 +02:00
cpuidle More power management updates for 5.20-rc1 2022-08-08 14:29:00 -07:00
crypto This update includes the following changes: 2022-08-02 17:45:14 -07:00
cxl cxl/hdm: Fix skip allocations vs multiple pmem allocations 2022-08-05 16:11:38 -07:00
dax devdax: Fix soft-reservation memory description 2022-09-24 18:05:53 -07:00
dca
devfreq More power management updates for 5.20-rc1 2022-08-08 14:29:00 -07:00
dio
dma dmaengine: zynqmp_dma: Typecast with enum to fix the coverity warning 2022-09-05 11:54:50 +05:30
dma-buf dma-buf/dma-resv: check if the new fence is really later 2022-08-25 13:10:30 +02:00
edac powerpc updates for 6.0 2022-08-06 16:38:17 -07:00
eisa
extcon extcon: Add EXTCON_DISP_CVBS and EXTCON_DISP_EDP 2022-07-15 11:37:41 +09:00
firewire firewire: net: Make use of get_unaligned_be48(), put_unaligned_be48() 2022-07-28 22:21:54 -07:00
firmware Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-29 14:30:51 -07:00
fpga fpga: m10bmc-sec: Fix possible memory leak of flash_buf 2022-09-19 12:58:19 +08:00
fsi
gnss
gpio gpiolib: cdev: Set lineevent_state::irq after IRQ register successfully 2022-09-21 09:32:11 +02:00
gpu Short summary of fixes pull 2022-09-23 13:18:26 +10:00
greybus
hid for-linus-2022083101 2022-08-31 09:54:14 -07:00
hsi
hte
hv Drivers: hv: Never allocate anything besides framebuffer from framebuffer memory region 2022-09-05 17:02:15 +00:00
hwmon hwmon: (asus-ec-sensors) autoload module via DMI data 2022-09-09 10:45:08 -07:00
hwspinlock hwspinlock: qcom: Add support for mmio usage to sfpb-mutex 2022-07-16 21:47:44 -05:00
hwtracing asm-generic: updates for 6.0 2022-08-05 10:07:23 -07:00
i2c i2c: mux: harden i2c_mux_alloc() against integer overflows 2022-09-21 22:12:06 +02:00
i3c
idle Power management updates for 5.20-rc1 2022-08-02 11:17:00 -07:00
iio iio: light: cm32181: make cm32181_pm_ops static 2022-08-21 18:24:16 +01:00
infiniband Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux 2022-09-28 19:20:49 -07:00
input Input updates for v6.0-rc7 2022-09-29 08:22:53 -07:00
interconnect Merge branch 'icc-rpm' into icc-next 2022-07-15 17:56:31 +03:00
iommu iommu/vt-d: Check correct capability for sagaw determination 2022-09-21 10:22:54 +02:00
ipack
irqchip irqchip/loongson-pch-lpc: Add dependence on LoongArch 2022-09-16 09:25:51 +01:00
isdn isdn: move from strlcpy with unused retval to strscpy 2022-08-22 17:54:03 -07:00
leds LED updates for 5.20: new driver for bcm63138, is31fl319x updates, 2022-08-08 11:36:21 -07:00
macintosh macintosh/adb: fix oob read in do_adb_query() function 2022-07-20 22:06:30 +10:00
mailbox - mtk: use rx_callback instead of cmdq_task_cb. 2022-08-08 10:19:40 -07:00
mcb drivers: mcb: directly use ida_alloc()/free() 2022-07-12 09:04:55 +02:00
md block-6.0-2022-08-26 2022-08-26 11:05:54 -07:00
media media: flexcop-usb: fix endpoint type check 2022-09-22 10:40:57 +02:00
memory More power management updates for 5.20-rc1 2022-08-08 14:29:00 -07:00
memstick MMC core: 2022-08-04 19:41:09 -07:00
message
mfd mfd: ocelot: Add support for the vsc7512 chip via spi 2022-09-09 07:54:47 +01:00
misc misc: fastrpc: increase maximum session count 2022-09-01 16:13:07 +02:00
mmc mmc: hsq: Fix data stomping during mmc recovery 2022-09-27 12:38:29 +02:00
most
mtd MTD core changes: 2022-08-05 14:13:45 -07:00
mux
net ibmveth: Copy tx skbs into a premapped buffer 2022-09-30 12:40:22 +01:00
nfc nfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout 2022-08-22 14:51:30 +01:00
ntb NTB: epf: Allow more flexibility in the memory BAR map method 2022-08-09 17:54:03 -04:00
nubus
nvdimm Merge branch 'for-6.0/dax' into libnvdimm-fixes 2022-09-24 18:14:12 -07:00
nvme block-6.0-2022-09-09 2022-09-09 15:03:08 -04:00
nvmem SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-22 13:02:10 -07:00
opp OPP: Fix an un-initialized variable usage 2022-08-16 10:48:08 +05:30
parisc parisc: remove obsolete manual allocation aligning in iosapic 2022-09-15 07:33:26 +02:00
parport
pci Fix of heap data and clang warnings, support for a new Intel NTB device, 2022-08-13 14:00:45 -07:00
pcmcia
peci peci: cpu: Fix use-after-free in adev_release() 2022-08-15 20:31:35 +02:00
perf arm64 fixes for -rc7 2022-09-23 15:28:51 -07:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-29 14:30:51 -07:00
pinctrl Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-22 13:02:10 -07:00
platform platform-drivers-x86 for v6.0-2 2022-09-02 10:35:51 -07:00
pnp PCI: Remove pci_get_legacy_ide_irq() and asm-generic/pci.h 2022-07-22 17:23:45 -05:00
power power supply and reset changes for the v6.0 series 2022-08-12 09:37:33 -07:00
powercap Power management updates for 5.20-rc1 2022-08-02 11:17:00 -07:00
pps
ps3
ptp ptp: Remove usage of the deprecated ida_simple_xxx API 2022-09-27 17:33:11 -07:00
pwm SPDX changes for 6.0-rc1 2022-08-04 12:12:54 -07:00
rapidio
ras
regulator regulator: Fixes for v6.0 2022-09-08 12:56:20 -04:00
remoteproc virtio: Revert "virtio: find_vqs() add arg sizes" 2022-08-16 01:40:24 -04:00
reset reset: npcm: fix iprst2 and iprst4 setting 2022-09-22 17:48:35 +02:00
rpmsg rpmsg: convert sysfs snprintf to sysfs_emit 2022-07-16 23:08:47 -05:00
rtc rtc: spear: set range max 2022-08-09 00:56:41 +02:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-29 14:30:51 -07:00
sbus
scsi ATA fixes for 6.0-rc7 2022-09-29 05:40:59 -07:00
sh genirq: Add and use an irq_data_update_affinity helper 2022-07-07 09:38:04 +01:00
siox
slimbus slimbus: messaging: fix typos in comments 2022-07-08 15:43:42 +02:00
soc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-29 14:30:51 -07:00
soundwire soundwire: qcom: fix device status array range 2022-09-01 14:26:44 +05:30
spi spi: Fixes for v6.0 2022-09-08 13:13:47 -04:00
spmi
ssb
staging net: drop the weight argument from netif_napi_add 2022-09-28 18:57:14 -07:00
target genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
tc
tee tee: fix compiler warning in tee_shm_register() 2022-08-25 11:40:06 +02:00
thermal Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-01 12:58:02 -07:00
thunderbolt Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-29 14:30:51 -07:00
tty serial: sifive: enable clocks for UART when probed 2022-09-22 16:38:18 +02:00
ufs scsi: ufs: core: Reduce the power mode change timeout 2022-08-19 21:34:36 -04:00
uio
usb USB-serial fixes for 6.0-rc7 2022-09-22 15:43:18 +02:00
vdpa genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
vfio VFIO fix for v6.0-rc5 2022-09-09 07:44:33 -04:00
vhost vhost/net: use struct ubuf_info_msgzc 2022-09-28 18:51:24 -07:00
video hyperv-fixes for v6.0-rc6 2022-09-12 18:33:55 -04:00
virt kunit: fix Kconfig for build-in tests USB4 and Nitro Enclaves 2022-09-01 13:00:48 -06:00
virtio virtio: kerneldocs fixes and enhancements 2022-08-16 01:40:24 -04:00
vlynq
w1
watchdog linux-watchdog 5.20-rc1 tag 2022-08-08 15:04:04 -07:00
xen xen: branch for v6.0-rc7 2022-09-23 08:31:24 -07:00
zorro
Kconfig
Makefile Staging driver patches for 6.0-rc1 2022-08-04 12:01:42 -07:00