Commit Graph

19608 Commits

Author SHA1 Message Date
Daniel F. Dickinson
4b93cbd172 ath79: Port PowerCloud Systems CR5000 support
Add ath79 arch support for PowerCloud Systems CR5000.  Previously
supported under ar71xx (however there are some errors in that support;
to be fixed shortly).

Info:

* This board is based on the Atheros DB120 reference design, but doesn't
  use the on-board switch.  Instead it attachs GMAC0 to an AR8327 switch.
* It only uses GMAC0 and the WAN is simply a VLAN in the stock firmware.
* It has 64MB RAM and 8MB flash.
* In the dts version we get rid of using 'open-drain' for the AR8327
  LED controls.
* As with the platform data version we disable JTAG as this conflicts
  with one of the pair of GPIO's required for the power/status LED
  (GPIO2 and GPIO4 are used for this LED).
* The pcie card wifi has an EEPROM but gets it's MAC address from
  the ART partition.
* The SoC wifi (2.4 GHz) is all from the ART.
* The USB is support comes from the SoC.

NB. This is actually an AR9342 rather than AR9344 but we use the 9344
definitions because there are no relevant differences for this board.

NB: Building only images that don't support reverting to the old
cloud-based firmware as the Skydog cloud service for the CR5000 no
longer exists.

Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>
2018-07-30 10:43:31 +02:00
Thibaut VARÈNE
091e915d99 ar71xx: improve MikroTik wAP R support
81d446b045 introduced incomplete
support for this device.

This patch attempts to correct the situation based on OEM source
code.

LED1-3 are GSM mode on OFW (2G/3G/4G) hence unassigned here.

Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
Tested-by: David Ehrmann <ehrmann@gmail.com>
2018-07-30 10:35:11 +02:00
Thibaut VARÈNE
5c2419b6f8 ar71xx: add missing diag LED support for RB wAP 2nD
3b15eb06c3 did not include diag.sh
edit

Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
2018-07-30 10:35:11 +02:00
Thibaut VARÈNE
e76c048d34 ar71xx: rbspi: mark rb911L user led as active low
The active_low flag was missing for the user LED. This LED is open drain
(confirmed in OEM source) and open drain only makes sense for active low
GPIOs.

The two wireless LEDs mentioned in the comments are also #defined for
future reference.

Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
Tested-by: Ryan Mounce <ryan@mounce.com.au>
2018-07-30 10:35:11 +02:00
Thibaut VARÈNE
e99f760235 ar71xx: rbspi: fix RB wAP AC gpio conflict and LED
e15c63a375 introduced code that was trying
to register GPIO 1 as both an LED and a button. The OEM source makes it
clear that LED1 is not wired to the SoC GPIOs. GPIO 1 is the reset button.

Furthermore the (green) power led default state should also be defined,
(matching OEM source), and it should be used by diag.sh since it's
currently the only software-controllable LED.

This patch fixes these issues and renames the corresponding #defines for
clarity

Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
2018-07-30 10:35:11 +02:00
Thibaut VARÈNE
03562bfcdb ar71xx: rbspi: clarify USB power gpios action
The gpios that control power toggle for USB on the RouterBOARD devices
are active low _off_ switches.

When they are active (low), power is off. When they are inactive
(high), power is on.

Rename GPIO defines, set gpios to GPIOF_ACTIVE_LOW for consistency and
reflect their true action in the display name. This brings openwrt code
in line with OEM.

Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
Tested-by: Ryan Mounce <ryan@mounce.com.au>
2018-07-30 10:35:11 +02:00
Rafał Miłecki
5e8b4be531 kernel: add DT binding support to the mtd redboot parser
It allows using that parser with the "compatible" set in DT.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-07-30 08:39:52 +02:00
Christian Lamparter
b70d3557e0 apm821xx: clean up gpio-hogs
convert the usb and both sata port power related gpio-hogs to
what they really are: fixed-regulators.

The ethernet phy-reset gpio-hog is replaced by a proper
upstream (4.15+) reset-gpios property in the mdio-node.
So this will work eventually.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2018-07-30 08:12:32 +02:00
Christian Lamparter
cff6548948 apm821xx: split MBL's rootfs.img.gz into a sysupgrade and factory image
@vahid-dan reported a issue with extracting the rpi images with
Gnome's Archive Manager:
"Ubuntu Archive Manager cannot extract the file and it just
throws a general error message: "An error occurred while
extracting files".
<https://forum.lede-project.org/t/corrupted-pre-built-v18-06-0-rc2-image-for-rpi>

The MBL's rootfs.img.gz image is generated in much the same way.
Hence this patch preemptively splits the rootfs.img.gz image into
a sysupgrade and a factory image.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2018-07-30 08:12:13 +02:00
Christian Lamparter
aed4799d6d apm821xx: build squashfs-rootfs images for the MBL
This patch adds support for squashfs as the root filesystem.

advantages:
 - migrate from a existing -ext4 installation and back
   with the sysupgrade utility
 - existing partition layout will not be lost during switch
 - slightly smaller image size as compared to the -ext4 image.

disadvantages:
 - needs f2fs + tools. This is because fstools rootdisk.c decides based
   on the partition size (currently root partitions > 100 MiB) f2fs is
   used as the rootfs_data filesystem.
 - rootfs_data is placed into the rootfs partition after the squashfs.
   This makes it difficult for tools that expect a /dev/sda${X} device.
   It also makes it difficult for data recovery tools as they might not
   expect to find a embedded partition or will be slightly confused.
   ... or will not support f2fs.

For people with existing build configurations: make sure to include mkf2fs
and f2fsck packages into the image. Otherwise the new -squashfs image will
only boot from the ram-overlay.

Note:
All overlay data (configurations/all installed packages/...) will be
placed in inside the rootfs partition (i.e. /dev/sda2) just after the
squashfs image.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2018-07-30 08:11:56 +02:00
Christian Lamparter
7516a96011 brcm2708: split sdcard.img.gz into a sysupgrade and factory image
@vahid-dan reported a issue with extracting the rpi images with
Gnome's Archive Manager:
"Ubuntu Archive Manager cannot extract the file and it just
throws a general error message: "An error occurred while
extracting files".
<https://forum.lede-project.org/t/corrupted-pre-built-v18-06-0-rc2-image-for-rpi>

@blogic told me to split the single sdcard.img.gz for the RPi
into a sysupgrade and a factory image for all brcm2708 targets.
The factory images will have no metadata attached, this way
these utilities that can't deal with the attached metadata will
not fail for no reason.

Cc: John Crispin <john@phrozen.org>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2018-07-30 08:11:36 +02:00
Jonas Gorski
7880a6f7fe brcm63xx: drop linux,part-probe usage where possible
It was present as 4.4 compatibility, but since we now use 4.9 or later
with the new upstream solution, we don't need it anymore.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
2018-07-29 15:38:33 +02:00
Jonas Gorski
abb28bec25 brcm63xx: drop own implementation of DT partitions in favour of upstream
The binding works the same, so we can just drop the revert and the patch.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
2018-07-29 15:38:33 +02:00
Rafał Miłecki
0417b08b06 bcm53xx: revert SPI controller commit breaking flash reads
That upstream commit caused instability in flash reads. It was reported
but there isn't any proper fix as for now.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-07-29 11:02:57 +02:00
Rafał Miłecki
a07730472c bcm53xx: backport BCM5301X/BCM53573 dts commits from 4.19+
This includes Linksys EA9500 support, BCM53573 timer fix and
upstream-ready partitions patch that replaces two downstream hacks.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-07-28 21:48:10 +02:00
Rafał Miłecki
8a175ea219 bcm53xx: switch USB 3.0 PHY DT description to use MDIO bus
USB 3.0 PHY is attached to the MDIO bus and should be supported
(accessed) as a MDIO device. This wasn't known initially which resulted
in writing driver that was working with MDIO bus (using some magic
values) without knowing it.

This commit updates DT to properly describe MDIO & USB 3.0 PHY and
enables required kernel drivers.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-07-28 21:46:08 +02:00
Rafał Miłecki
5c8b8a3fd4 bcm53xx: backport DT fix for I2C controller interrupt
Specified interrupt type was incorrect.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-07-28 21:36:33 +02:00
Rafał Miłecki
2a598bbaa3 kernel: backport mtd support for subpartitions in DT
This is a new & warm feature that allows nesting partiitons in DT and
mixing their types (e.g. static vs. dynamic). It's very useful for
boards that have most partitions static but some of them require extra
parsing (e.g. a "firmware" partition).

It's required to successfully backport support for new devices using
that new syntax in their DT files.

Since brcm63xx has a custom alternative patch the upstream one is being
reverted for it. The plan is to make brcm63xx use the upstream
implementation.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-07-27 22:16:24 +02:00
Rafał Miłecki
4c1aa64b4d brcm47xx: revert upstream commit breaking BCM4718A1
This fixes kernel hang when booting on BCM4718A1 (& probably BCM4717A1).

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-07-27 15:58:51 +02:00
Rafał Miłecki
6bcafea2c0 kernel: backport mtd patches with Broadcom of_match_table-s
Two tiny & trivial patches with no regression risk. One simplifies
bcm53xx downstream patch.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-07-27 15:55:01 +02:00
John Crispin
ffc40d2eae ipq40xx: move essedma patches into same range
Signed-off-by: John Crispin <john@phrozen.org>
2018-07-25 12:13:19 +02:00
John Crispin
e725d3080c ipq40xx: sync kernel config
Signed-off-by: John Crispin <john@phrozen.org>
2018-07-25 12:13:18 +02:00
John Crispin
95672e0433 ipq40xx: use patches that were sent upstream
Signed-off-by: John Crispin <john@phrozen.org>
2018-07-25 12:13:18 +02:00
John Crispin
e8c58e7ddd ipq40xx: move dts file patches to end of series
Signed-off-by: John Crispin <john@phrozen.org>
2018-07-25 12:00:21 +02:00
John Crispin
c913288844 ipq40xx: cleanup USB support
remove the 2 USB PHY drivers and add a generic PHY driver instead

Signed-off-by: John Crispin <john@phrozen.org>
2018-07-25 12:00:21 +02:00
John Crispin
3d456a50f4 ipq40xx: drop no-op cpu_idle symbol patch
Signed-off-by: John Crispin <john@phrozen.org>
2018-07-25 12:00:21 +02:00
David Bauer
5409dcffbd ath79: fix OCEDO Raccoon
The OCEDO Raccoon only has one ethernet port, but currently uci sections
for WAN and LAN are created.

Additionally, newer versions of the devices U-Boot (units with SteelWRT)
set the kernel-cmdline and therefore overwrite the partition-layout.
We fix this by overwriting the cmdline supplied by the bootloader.

Signed-off-by: David Bauer <mail@david-bauer.net>
2018-07-25 08:59:33 +02:00
Mathias Kresin
4cbf5601f9 ramips: remove stale get_status_led call
The get_status_led() function was removed due to the convertion to dts
alias based status led.

Since we don't need the boardname any longer, the functions.sh include
isn't required any more.

Fixes: c9c4b2116c ("ramips: Use dts alias based status led")

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-07-25 08:57:17 +02:00
Mathias Kresin
3716b5e4e6 kernel: don't auto attach ubi on read error
With a10a204aab ("kernel: make ubi auto-attach check for a tar file
magic") the check for the magic was added without considering a failing
mtd_read(). If the read fails, no check is done and the mount code is
called straight away.

Failing with an error message for such cases seems to me the cleaner way,
as it would allow to spot hidden/workaround issues.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-07-24 22:24:21 +02:00
Mathias Kresin
0ac91d82ed kernel: handle bad blocks in ubi auto attach code
The first block(s) of the ubi mtd device might be bad. We need to take
care on our own to skip the bad block(s) and read the next one(s).

Don't treat recoverable read errors as fatal and check for the UBI magic
if the data of a block could be recovered using ECC or similar.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-07-24 22:24:21 +02:00
Mathias Kresin
fdf6760cda kernel: improve ubi auto attach code readability
Move the put_mtd_device() called on multiple error conditions to a goto
label to use it later for more error conditions.

The early return on failed open of the mtd device and mismatching mtd
type allows to get rid of one level of indentation. By jumping to the
cleanup code, a refcount bug is fixed for the wrong flash type condition.

While at it, make clear that we only check for the UBI magic if the read
from flash was successful.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2018-07-24 22:24:21 +02:00
John Crispin
1e48e56c50 ipq40xx: drop bus driver, its a no-op and only does lots of alloc/free
Signed-off-by: John Crispin <john@phrozen.org>
2018-07-24 10:50:13 +02:00
Felix Fietkau
7ad20678e5 kernel: backport a change to 4.9 which disables overly aggressive warnings on gcc 8
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-07-22 17:16:35 +02:00
Felix Fietkau
c527d0ec18 kernel: backport fixes for GCC 8 errors in syscall definitions
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-07-22 17:16:30 +02:00
Rosen Penev
e22cc57593 ipq806x: dts: Remove device_type = "ethernet-phy"
device_type is deprecated. Upstream doesn't seem to like it either.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
2018-07-19 18:58:24 +02:00
Christian Lamparter
9b47aa93c7 apm821xx: unify My Book Live Single + Duo images
By takimata:
"Come to think of it, an MBL Single board boots up just fine on an
MBL Duo image, and the MBL Single board identifies completely
identical to the MBL Duo
(Board: Apollo-3G - APM82181 Board, 2*SATA, 1*USB).
I wonder if there is any downside to just using the MBL Duo firmware
on a MBL Single. I wonder if the two firmwares could even be unified."

<https://forum.lede-project.org/t/wd-mybook-live-duo-two-disks/16195/9>

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2018-07-19 18:58:24 +02:00
Thibaut VARÈNE
c4f09fc9f8 ramips: define common MikroTik RouterBOARD image recipe
All these devices share the exact same image format.

The usb3 kmod is added for the rbm11g, as the rbm11g has a mini-pcie
slot like its bigger sibling. The usb kmod is necessary for
usb-over-pcie support, which is mandatory for a lot of LTE modules.

Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
2018-07-19 18:58:24 +02:00
Johann Neuhauser
02d53e6a21 lantiq: add support for FritzBox 7312
The FritzBox 7312 is also known as 1&1 WLAN-MODEM. The device is almost
the same as FB7330, but only one ETH-Port and no USB.

Hardware
SoC: Lantiq Xway ARX188 PSB 50812 EL
RAM: 64MB DDR1 (Zentel A4S12D40FTP-G5)
Ethernet: Atheros 8030
Wireless: Atheros AR9227 b/g/n 2x2
DSL: Lantiq ADSL2+
DECT: Dialog SC14441
Buttons: WiFi, DECT
LEDs: Power/DSL, Fon, DECT, WLAN, Info

LEDs
Power: GPIO#44 (active low)
Internet: GPIO#47 (active low)
DECT: GPIO#38 (active low)
WLAN: GPIO#37 (active low)
Info: GPIO#35 (active low)

The Fon LED is labeled as internet in avm gpl sources.

Buttons
WLAN: GPIO#1 (active low)
DECT: GPIO#2 (active low)

Phy
GPIO#03: 25 MHz
GPIO#34: Reset (active low)
GPIO#39: Int
GPIO#42: MII MDIO
GPIO#43: MII MDC

PCIe
GPIO#21: reset (active low)

Installation:

To install OpenWrt via Eva bootloader, within the first seconds after
power on a ftp connection need to be established to the FRITZ!Box at
192.168.178.1 and the the following ftp commands need to be run:

  ftp> quote USER adam2
  ftp> quote PASS adam2
  ftp> binary
  ftp> debug
  ftp> passive
  ftp> quote MEDIA FLSH
  ftp> put /path/to/openwrt-lantiq-xway-avm_fritz7312-squashfs-sysupgrade.bin mtd1
  ftp> quote REBOOT

Signed-off-by: Johann Neuhauser <johann@it-neuhauser.de>
2018-07-18 19:17:46 +02:00
Johann Neuhauser
f2f7802148 lantiq: etop: pass devicetree node to phy driver
Use of_mdiobus_register() to pass the ethernet phy node to the phy
drivers. This is needed for the at8030 phy driver which needs to know
the GPIO which is connected to the ar8030 reset pin.

This driver expects a child in gsw/etop node named "mdio-bus", which has
the ethernet phys defined:

&gsw {
	phy-mode = "rmii";
	phy-handle = <&phy0>;
	mtd-mac-address = <&ath9k_cal 0xa91>;
	mtd-mac-address-increment = <(-2)>;

	mdio-bus {
		#address-cells = <1>;
		#size-cells = <0>;
		reg = <0>;

		phy0: ethernet-phy@0 {
			reg = <0>;
			reset-gpios = <&gpio 34 GPIO_ACTIVE_LOW>;
		};
	};
};

Fallback to mdiobus_register() if no mdio-bus child node exists. This
way we don't need to touch all xway dts files, for which we don't know
the actual address on the mdio bus.

Signed-off-by: Johann Neuhauser <johann@it-neuhauser.de>
2018-07-18 19:17:46 +02:00
Aleksandr V. Piskunov
290c54473e ath79: fix TP-Link Archer C7 v2 wlan1 MAC address
The mac address for the 2.4 wireless need to be decremented by one.

Correct MAC adress increments for this board are:
wlan0 (5GHz)   : -2
wlan1 (2.4GHz) : -1
eth1  (LAN)    :  0
eth0  (WAN)    :  1

Signed-off-by: Aleksandr V. Piskunov <aleksandr.v.piskunov@gmail.com>
2018-07-18 19:17:46 +02:00
Jo-Philipp Wich
8194f9ef4a mediatek: fix parallel build issues in image build code
Drop the parallel-unsafe custom Build/dtb macro and use the .dtb artifacts
produced by the generic image build code.

Also remove unused .dtb references in the mt7623 subtarget.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
2018-07-17 14:40:04 +02:00
Kin Chan
18b87b10a9 ar71xx: Move F9K1115v2 under ar71xx tiny target
F9K1115v2 has a kernel partition size of 1408 kB.

Since kernel 4.9.x+ the kernel image for this device compiled had exceeded
the kernel partition size limit and thus failing size check.

The kernel image generated for this device
under ar71xx tiny target is 1329.67 kB < 1408 kB.

Signed-off-by: Kin Chan <kcchan1@outlook.com>
2018-07-16 15:12:19 +02:00
Chuanhong Guo
c9c4b2116c ramips: Use dts alias based status led
Also fix several typos in led node name.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
2018-07-16 15:12:18 +02:00
Thibaut VARÈNE
c2d2647c09 ar71xx: add support for MikroTik RB931-2nD
This patch adds support for the MikroTik RB931-2nD (hAP mini):
https://mikrotik.com/product/RB931-2nD

Specifications:
  * SoC: Qualcomm QCA9533 (650MHz)
  * RAM: 32MiB
  * Storage: 16MiB SPI NOR flash
  * Ethernet: 3x100M
  * Wireless: QCA9533 built-in, dual-chain 802.11b/g/n

Installation:

1. Setup a DHCP/BOOTP Server with the following parameters:
   * DHCP-Option 66 (TFTP server name): pointing to a local TFTP
     server within the same subnet of the DHCP range
   * DHCP-Option 67 (Bootfile-Name): matching the initramfs filename
     of the to be booted image. The usable intramfs files are:
       - openwrt-ar71xx-mikrotik-vmlinux-initramfs.elf
       - openwrt-ar71xx-mikrotik-vmlinux-initramfs-lzma.elf
       - openwrt-ar71xx-mikrotik-rb-nor-flash-16M-initramfs-kernel.bin

2. Press the reset button on the board and keep that pressed.

3. Connect the board to your local network via its Internet port.

4. Release the button after the LEDs on the board are turned off.
   Now the board should load and start the initramfs image from
   the TFTP server.

5. Now connect the board via either of its LAN ports (2 or 3).

6. Upload the sysupgrade image to the board with scp:
     $ scp openwrt-ar71xx-mikrotik-rb-nor-flash-16M-squashfs-sysupgrade.bin root@192.168.1.1:/tmp/fw.bin

7. Log in to the running system listening on 192.168.1.1 via ssh
   as root (without password):
     $ ssh root@192.168.1.1

8. Flash the uploaded firmware file from the ssh session via the
   sysupgrade command:
     root@OpenWrt:~# sysupgrade /tmp/fw.bin

Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
2018-07-16 15:12:17 +02:00
Andrius Štikonas
d591260407 brcm63xx: initial support for Sky SR102 router
The sender domain has a DMARC Reject/Quarantine policy which disallows
sending mailing list messages using the original "From" header.

To mitigate this problem, the original message has been wrapped
automatically by the mailing list software.
SOC: 	    BCM63168 (BMIPS4350 V8.0 @400MHz)
Flash size: 16 MiB
RAM size:   128 MiB

Heavily based on patch for OpenWRT Chaos Chalmer.
Original patch and more info can be found at:
https://openwrt.org/toh/sky/sr102

Known issues:
 - Wireless and ADSL modem are not working.

Signed-off-by: Andrius Štikonas <andrius@stikonas.eu>
2018-07-16 15:12:08 +02:00
Christian Lamparter
c3f9a1ac0e apm821xx: attempt to fix sata access freezes
The original vendor's driver programmed the dma controller's
AHB HPROT values to enable bufferable, privileged mode. This
along with the "same priorty for both channels" could very
well fix the freezes that have been reported on the forum by
@ticerex and @takimata.

<https://forum.lede-project.org/t/wd-mybook-live-duo-two-disks/16195/46>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2018-07-16 15:10:21 +02:00
Christian Lamparter
12b80f1cab apm821xx: fix usb-otg on 4.14
Starting with 4.14, the "amcc,dwc-otg" needs to be used
in order to get the usb-otg to work.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
2018-07-16 08:42:21 +02:00
Felix Fietkau
18533ff415 kernel: backport page fragment API changes from 4.10+ to 4.9
mt76 now relies on this API

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-07-14 11:39:00 +02:00
Felix Fietkau
2601e34fad ramips: ethernet: disable fraglist support
The code has some remaining issues that cause ethernet hangs, so
disable it for now until we can get it fixed

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-07-14 08:32:39 +02:00
Felix Fietkau
0c285bd081 ramips: ethernet: use own page_frag_cache
Using the NAPI or netdev frag cache along with other drivers can lead to
32 KiB pages being held for a long time, despite only being used for
very few page fragment.
This can happen if the ethernet driver grabs one or two fragments for rx
ring refill, while other drivers use (and free up) the remaining
fragments. The 32 KiB higher-order page can only be freed once all users
have freed their fragments, which only happens after the rings of all
drivers holding the fragments have wrapped around.

Depending on the traffic patterns, this can waste a lot of memory and
look a lot like a memory leak

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-07-12 18:43:53 +02:00