- 23 Aug, 2022 39 commits
-
-
Paolo Abeni authored
Arseniy Krasnov says: ==================== vsock: updates for SO_RCVLOWAT handling This patchset includes some updates for SO_RCVLOWAT: 1) af_vsock: During my experiments with zerocopy receive, i found, that in some cases, poll() implementation violates POSIX: when socket has non- default SO_RCVLOWAT(e.g. not 1), poll() will always set POLLIN and POLLRDNORM bits in 'revents' even number of bytes available to read on socket is smaller than SO_RCVLOWAT value. In this case,user sees POLLIN flag and then tries to read data(for example using 'read()' call), but read call will be blocked, because SO_RCVLOWAT logic is supported in dequeue loop in af_vsock.c. But the same time, POSIX requires that: "POLLIN Data other than high-priority data may be read without blocking. POLLRDNORM Normal data may be read without blocking." See https://www.open-std.org/jtc1/sc22/open/n4217.pdf, page 293. So, we have, that poll() syscall returns POLLIN, but read call will be blocked. Also in man page socket(7) i found that: "Since Linux 2.6.28, select(2), poll(2), and epoll(7) indicate a socket as readable only if at least SO_RCVLOWAT bytes are available." I checked TCP callback for poll()(net/ipv4/tcp.c, tcp_poll()), it uses SO_RCVLOWAT value to set POLLIN bit, also i've tested TCP with this case for TCP socket, it works as POSIX required. I've added some fixes to af_vsock.c and virtio_transport_common.c, test is also implemented. 2) virtio/vsock: It adds some optimization to wake ups, when new data arrived. Now, SO_RCVLOWAT is considered before wake up sleepers who wait new data. There is no sense, to kick waiter, when number of available bytes in socket's queue < SO_RCVLOWAT, because if we wake up reader in this case, it will wait for SO_RCVLOWAT data anyway during dequeue, or in poll() case, POLLIN/POLLRDNORM bits won't be set, so such exit from poll() will be "spurious". This logic is also used in TCP sockets. 3) vmci/vsock: Same as 2), but i'm not sure about this changes. Will be very good, to get comments from someone who knows this code. 4) Hyper-V: As Dexuan Cui mentioned, for Hyper-V transport it is difficult to support SO_RCVLOWAT, so he suggested to disable this feature for Hyper-V. ==================== Link: https://lore.kernel.org/r/de41de4c-0345-34d7-7c36-4345258b7ba8@sberdevices.ruSigned-off-by:Paolo Abeni <pabeni@redhat.com>
-
Arseniy Krasnov authored
This adds test to check, that when poll() returns POLLIN, POLLRDNORM bits, next read call won't block. Signed-off-by:
Arseniy Krasnov <AVKrasnov@sberdevices.ru> Reviewed-by:
Stefano Garzarella <sgarzare@redhat.com> Signed-off-by:
-
Arseniy Krasnov authored
This adds extra condition to wake up data reader: do it only when number of readable bytes >= SO_RCVLOWAT. Otherwise, there is no sense to kick user, because it will wait until SO_RCVLOWAT bytes will be dequeued. This check is performed in vsock_data_ready(). Signed-off-by:
Vishnu Dasa <vdasa@vmware.com> Signed-off-by:
-
Arseniy Krasnov authored
This adds extra condition to wake up data reader: do it only when number of readable bytes >= SO_RCVLOWAT. Otherwise, there is no sense to kick user,because it will wait until SO_RCVLOWAT bytes will be dequeued. This check is performed in vsock_data_ready(). Signed-off-by:
-
Arseniy Krasnov authored
This adds 'vsock_data_ready()' which must be called by transport to kick sleeping data readers. It checks for SO_RCVLOWAT value before waking user, thus preventing spurious wake ups. Based on 'tcp_data_ready()' logic. Signed-off-by:
-
Arseniy Krasnov authored
Passing 1 as the target to notify_poll_in(), we don't honor what the user has set via SO_RCVLOWAT, going to set POLLIN and POLLRDNORM, even if we don't have the amount of bytes expected by the user. Let's use sock_rcvlowat() to get the right target to pass to notify_poll_in(); Signed-off-by:
-
Arseniy Krasnov authored
This callback controls setting of POLLIN, POLLRDNORM output bits of poll() syscall, but in some cases, it is incorrectly to set it, when socket has at least 1 bytes of available data. Use 'target' which is already exists. Signed-off-by:
-
Arseniy Krasnov authored
This callback controls setting of POLLIN, POLLRDNORM output bits of poll() syscall, but in some cases, it is incorrectly to set it, when socket has at least 1 bytes of available data. Use 'target' which is already exists. Signed-off-by:
-
Arseniy Krasnov authored
For Hyper-V it is quiet difficult to support this socket option,due to transport internals, so disable it. Signed-off-by:
Dexuan Cui <decui@microsoft.com> Reviewed-by:
-
Arseniy Krasnov authored
This adds transport specific callback for SO_RCVLOWAT, because in some transports it may be difficult to know current available number of bytes ready to read. Thus, when SO_RCVLOWAT is set, transport may reject it. Signed-off-by:
-
Zhengchao Shao authored
In rtnetlink_rcv_msg function, the permission for all user operations is checked except the GET operation, which is the same as the checking in qdisc. Therefore, remove the user rights check in qdisc. Signed-off-by:
Zhengchao Shao <shaozhengchao@huawei.com> Message-Id: <20220819041854.83372-1-shaozhengchao@huawei.com> Signed-off-by:
-
git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queueJakub Kicinski authored
Tony Nguyen says: ==================== Intel Wired LAN Driver Updates 2022-08-18 (ixgbe) This series contains updates to ixgbe driver only. Fabio M. De Francesco replaces kmap() call to page_address() for rx_buffer->page(). Jeff Daly adds a manual AN-37 restart to help resolve issues with some link partners. * '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue: ixgbe: Manual AN-37 for troublesome link partners for X550 SFI ixgbe: Don't call kmap() on page allocated with GFP_ATOMIC ==================== Link: https://lore.kernel.org/r/20220818223402.1294091-1-anthony.l.nguyen@intel.comSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
-
git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queueJakub Kicinski authored
Tony Nguyen says: ==================== Intel Wired LAN Driver Updates 2022-08-18 (ice) This series contains updates to ice driver only. Jesse and Anatolii add support for controlling FCS/CRC stripping via ethtool. Anirudh allows for 100M speeds on devices which support it. Sylwester removes ucast_shared field and the associated dead code related to it. Mikael removes non-inclusive language from the driver. * '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue: ice: remove non-inclusive language ice: Remove ucast_shared ice: Allow 100M speeds for some devices ice: Implement FCS/CRC and VLAN stripping co-existence policy ice: Implement control of FCS/CRC stripping ==================== Link: https://lore.kernel.org/r/20220818155207.996297-1-anthony.l.nguyen@intel.comSigned-off-by:
-
Vladimir Oltean authored
Since commit 129bd7ca ("net: dsa: Prevent usage of NET_DSA_TAG_8021Q as tagging protocol"), dsa_8021q_netdev_ops no longer exists, so remove the comment that talks about it. Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://lore.kernel.org/r/20220818143808.2808393-1-vladimir.oltean@nxp.comSigned-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Link: https://lore.kernel.org/r/20220818210228.8635-1-wsa+renesas@sang-engineering.comSigned-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20220818210216.8419-1-wsa+renesas@sang-engineering.comSigned-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
Nikolay Aleksandrov <razor@blackwall.org> Link: https://lore.kernel.org/r/20220818210212.8347-1-wsa+renesas@sang-engineering.comSigned-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Wolfram Sang authored
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/Signed-off-by:
-
Jakub Kicinski authored
Vladimir Oltean says: ==================== Validate OF nodes for DSA shared ports This is the first set of measures taken so that more drivers can be transitioned towards phylink on shared (CPU and DSA) ports some time in the future. It consists of: - expanding the DT schema for DSA and related drivers to clarify the new requirements. - introducing warnings for drivers that currently skip phylink due to incomplete DT descriptions. - introducing warning for drivers that currently skip phylink due to using platform data (search for struct dsa_chip_data). - closing the possibility for new(ish) drivers to skip phylink, by validating their DT descriptions. - making the code paths used by shared ports more evident. - preparing the code paths used by shared ports for further work to fake a link description where that is possible. More details in patch 10/10. DT binding (patches 1-6) and kernel (7-10) are in principle separable, but are submitted together since they're part of the same story. Patches 8 and 9 are DSA cleanups, and patch 7 is a dependency for patch 10. v1 at https://patchwork.kernel.org/project/netdevbpf/patch/20220723164635.1621911-1-vladimir.oltean@nxp.com/ v2 at https://patchwork.kernel.org/project/netdevbpf/patch/20220729132119.1191227-5-vladimir.oltean@nxp.com/ v3 at https://patchwork.kernel.org/project/netdevbpf/cover/20220806141059.2498226-1-vladimir.oltean@nxp.com/ ==================== Link: https://lore.kernel.org/r/20220818115500.2592578-1-vladimir.oltean@nxp.comSigned-off-by:
-
Vladimir Oltean authored
Early DSA drivers were kind of simplistic in that they assumed a fairly narrow hardware layout. User ports would have integrated PHYs at an internal MDIO address that is derivable from the port number, and shared (DSA and CPU) ports would have an MII-style (serial or parallel) connection to another MAC. Phylib and then phylink were used to drive the internal PHYs, and this needed little to no description through the platform data structures. Bringing up the shared ports at the maximum supported link speed was the responsibility of the drivers. As a result of this, when these early drivers were converted from platform data to the new DSA OF bindings, there was no link information translated into the first DT bindings. https://lore.kernel.org/all/YtXFtTsf++AeDm1l@lunn.ch/ Later, phylink was adopted for shared ports as well, and today we have a workaround in place, introduced by commit a20f9970 ("net: dsa: Don't instantiate phylink for CPU/DSA ports unless needed"). There, DSA checks for the presence of phy-handle/fixed-link/managed OF properties, and if missing, phylink registration would be skipped. This is because phylink is optional for some drivers (the shared ports already work without it), but the process of starting to register a port with phylink is irreversible: if phylink_create() fails to find the fwnode properties it needs, it bails out and it leaves the ports inoperational (because phylink expects ports to be initially down, so DSA necessarily takes them down, and doesn't know how to put them back up again). DSA being a common framework, new drivers opt into this workaround willy-nilly, but the ideal behavior from the DSA core's side would have been to not interfere with phylink's process of failing at all. This isn't possible because of regression concerns with pre-phylink DT blobs, but at least DSA should put a stop to the proliferation of more of such cases that rely on the workaround to skip phylink registration, and sanitize the environment that new drivers work in. To that end, create a list of compatible strings for which the workaround is preserved, and don't apply the workaround for any drivers outside that list (this includes new drivers). In some cases, we make the assumption that even existing drivers don't rely on DSA's workaround, and we do this by looking at the device trees in which they appear. We can't fully know what is the situation with downstream DT blobs, but we can guess the overall trend by studying the DT blobs that were submitted upstream. If there are upstream blobs that have lacking descriptions, we take it as very likely that there are many more downstream blobs that do so too. If all upstream blobs have complete descriptions, we take that as a hint that the driver is a candidate for enforcing strict DT bindings (considering that most bindings are copy-pasted). If there are no upstream DT blobs, we take the conservative route of allowing the workaround, unless the driver maintainer instructs us otherwise. The driver situation is as follows: ar9331 ~~~~~~ compatible strings: - qca,ar9331-switch 1 occurrence in mainline device trees, part of SoC dtsi (arch/mips/boot/dts/qca/ar9331.dtsi), description is not problematic. Verdict: opt into strict DT bindings and out of workarounds. b53 ~~~ compatible strings: - brcm,bcm5325 - brcm,bcm53115 - brcm,bcm53125 - brcm,bcm53128 - brcm,bcm5365 - brcm,bcm5389 - brcm,bcm5395 - brcm,bcm5397 - brcm,bcm5398 - brcm,bcm53010-srab - brcm,bcm53011-srab - brcm,bcm53012-srab - brcm,bcm53018-srab - brcm,bcm53019-srab - brcm,bcm5301x-srab - brcm,bcm11360-srab - brcm,bcm58522-srab - brcm,bcm58525-srab - brcm,bcm58535-srab - brcm,bcm58622-srab - brcm,bcm58623-srab - brcm,bcm58625-srab - brcm,bcm88312-srab - brcm,cygnus-srab - brcm,nsp-srab - brcm,omega-srab - brcm,bcm3384-switch - brcm,bcm6328-switch - brcm,bcm6368-switch - brcm,bcm63xx-switch I've found at least these mainline DT blobs with problems: arch/arm/boot/dts/bcm47094-linksys-panamera.dts - lacks phy-mode arch/arm/boot/dts/bcm47189-tenda-ac9.dts - lacks phy-mode and fixed-link arch/arm/boot/dts/bcm47081-luxul-xap-1410.dts arch/arm/boot/dts/bcm47081-luxul-xwr-1200.dts arch/arm/boot/dts/bcm47081-buffalo-wzr-600dhp2.dts - lacks phy-mode and fixed-link arch/arm/boot/dts/bcm47094-luxul-xbr-4500.dts arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts arch/arm/boot/dts/bcm4708-luxul-xap-1510.dts arch/arm/boot/dts/bcm953012er.dts arch/arm/boot/dts/bcm4708-netgear-r6250.dts arch/arm/boot/dts/bcm4708-buffalo-wzr-1166dhp-common.dtsi arch/arm/boot/dts/bcm4708-luxul-xwc-1000.dts arch/arm/boot/dts/bcm47094-luxul-abr-4500.dts - lacks phy-mode and fixed-link arch/arm/boot/dts/bcm53016-meraki-mr32.dts - lacks phy-mode Verdict: opt into DSA workarounds. bcm_sf2 ~~~~~~~ compatible strings: - brcm,bcm4908-switch - brcm,bcm7445-switch-v4.0 - brcm,bcm7278-switch-v4.0 - brcm,bcm7278-switch-v4.8 A single occurrence in mainline (arch/arm64/boot/dts/broadcom/bcm4908/bcm4908.dtsi), part of a SoC dtsi, valid description. Florian Fainelli explains that most of the bcm_sf2 device trees lack a full description for the internal IMP ports. Verdict: opt the BCM4908 into strict DT bindings, and opt the rest into the workarounds. Note that even though BCM4908 has strict DT bindings, it still does not register with phylink on the IMP port due to it implementing ->adjust_link(). hellcreek ~~~~~~~~~ compatible strings: - hirschmann,hellcreek-de1soc-r1 No occurrence in mainline device trees. Kurt Kanzenbach explains that the downstream device trees lacked phy-mode and fixed link, and needed work, but were fixed in the meantime. Verdict: opt into strict DT bindings and out of workarounds. lan9303 ~~~~~~~ compatible strings: - smsc,lan9303-mdio - smsc,lan9303-i2c 1 occurrence in mainline device trees: arch/arm/boot/dts/imx53-kp-hsc.dts - no phy-mode, no fixed-link Verdict: opt out of strict DT bindings and into workarounds. lantiq_gswip ~~~~~~~~~~~~ compatible strings: - lantiq,xrx200-gswip - lantiq,xrx300-gswip - lantiq,xrx330-gswip No occurrences in mainline device trees. Martin Blumenstingl confirms that the downstream OpenWrt device trees lack a proper fixed-link and need work, and that the incomplete description can even be seen in the example from Documentation/devicetree/bindings/net/dsa/lantiq-gswip.txt. Verdict: opt out of strict DT bindings and into workarounds. microchip ksz ~~~~~~~~~~~~~ compatible strings: - microchip,ksz8765 - microchip,ksz8794 - microchip,ksz8795 - microchip,ksz8863 - microchip,ksz8873 - microchip,ksz9477 - microchip,ksz9897 - microchip,ksz9893 - microchip,ksz9563 - microchip,ksz8563 - microchip,ksz9567 - microchip,lan9370 - microchip,lan9371 - microchip,lan9372 - microchip,lan9373 - microchip,lan9374 5 occurrences in mainline device trees, all descriptions are valid. But we had a snafu for the ksz8795 and ksz9477 drivers where the phy-mode property would be expected to be located directly under the 'switch' node rather than under a port OF node. It was fixed by commit edecfa98 ("net: dsa: microchip: look for phy-mode in port nodes"). The driver still has compatibility with the old DT blobs. The lan937x support was added later than the above snafu was fixed, and even though it has support for the broken DT blobs by virtue of sharing a common probing function, I'll take it that its DT blobs are correct. Verdict: opt lan937x into strict DT bindings, and the others out. mt7530 ~~~~~~ compatible strings - mediatek,mt7621 - mediatek,mt7530 - mediatek,mt7531 Multiple occurrences in mainline device trees, one is part of an SoC dtsi (arch/mips/boot/dts/ralink/mt7621.dtsi), all descriptions are fine. Verdict: opt into strict DT bindings and out of workarounds. mv88e6060 ~~~~~~~~~ compatible string: - marvell,mv88e6060 no occurrences in mainline, nobody knows anybody who uses it. Verdict: opt out of strict DT bindings and into workarounds. mv88e6xxx ~~~~~~~~~ compatible strings: - marvell,mv88e6085 - marvell,mv88e6190 - marvell,mv88e6250 Device trees that have incomplete descriptions of CPU or DSA ports: arch/arm64/boot/dts/freescale/imx8mq-zii-ultra.dtsi - lacks phy-mode arch/arm64/boot/dts/marvell/cn9130-crb.dtsi - lacks phy-mode and fixed-link arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts - lacks phy-mode arch/arm/boot/dts/kirkwood-mv88f6281gtw-ge.dts - lacks phy-mode arch/arm/boot/dts/vf610-zii-spb4.dts - lacks phy-mode arch/arm/boot/dts/vf610-zii-cfu1.dts - lacks phy-mode arch/arm/boot/dts/vf610-zii-dev-rev-c.dts - lacks phy-mode on CPU port, fixed-link on DSA ports arch/arm/boot/dts/vf610-zii-dev-rev-b.dts - lacks phy-mode on CPU port arch/arm/boot/dts/armada-381-netgear-gs110emx.dts - lacks phy-mode arch/arm/boot/dts/vf610-zii-scu4-aib.dts - lacks fixed-link on xgmii DSA ports and/or in-band-status on 2500base-x DSA ports, and phy-mode on CPU port arch/arm/boot/dts/imx6qdl-gw5904.dtsi - lacks phy-mode and fixed-link arch/arm/boot/dts/armada-385-clearfog-gtr-l8.dts - lacks phy-mode and fixed-link arch/arm/boot/dts/vf610-zii-ssmb-dtu.dts - lacks phy-mode arch/arm/boot/dts/kirkwood-dir665.dts - lacks phy-mode arch/arm/boot/dts/kirkwood-rd88f6281.dtsi - lacks phy-mode arch/arm/boot/dts/orion5x-netgear-wnr854t.dts - lacks phy-mode and fixed-link arch/arm/boot/dts/armada-388-clearfog.dts - lacks phy-mode arch/arm/boot/dts/armada-xp-linksys-mamba.dts - lacks phy-mode arch/arm/boot/dts/armada-385-linksys.dtsi - lacks phy-mode arch/arm/boot/dts/imx6q-b450v3.dts arch/arm/boot/dts/imx6q-b850v3.dts - has a phy-handle but not a phy-mode? arch/arm/boot/dts/armada-370-rd.dts - lacks phy-mode arch/arm/boot/dts/kirkwood-linksys-viper.dts - lacks phy-mode arch/arm/boot/dts/imx51-zii-rdu1.dts - lacks phy-mode arch/arm/boot/dts/imx51-zii-scu2-mezz.dts - lacks phy-mode arch/arm/boot/dts/imx6qdl-zii-rdu2.dtsi - lacks phy-mode arch/arm/boot/dts/armada-385-clearfog-gtr-s4.dts - lacks phy-mode and fixed-link Verdict: opt out of strict DT bindings and into workarounds. ocelot ~~~~~~ compatible strings: - mscc,vsc9953-switch - felix (arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi) is a PCI device, has no compatible string 2 occurrences in mainline, both are part of SoC dtsi and complete. Verdict: opt into strict DT bindings and out of workarounds. qca8k ~~~~~ compatible strings: - qca,qca8327 - qca,qca8328 - qca,qca8334 - qca,qca8337 5 occurrences in mainline device trees, none of the descriptions are problematic. Verdict: opt into strict DT bindings and out of workarounds. realtek ~~~~~~~ compatible strings: - realtek,rtl8366rb - realtek,rtl8365mb 2 occurrences in mainline, both descriptions are fine, additionally rtl8365mb.c has a comment "The device tree firmware should also specify the link partner of the extension port - either via a fixed-link or other phy-handle." Verdict: opt into strict DT bindings and out of workarounds. rzn1_a5psw ~~~~~~~~~~ compatible strings: - renesas,rzn1-a5psw One single occurrence, part of SoC dtsi (arch/arm/boot/dts/r9a06g032.dtsi), description is fine. Verdict: opt into strict DT bindings and out of workarounds. sja1105 ~~~~~~~ Driver already validates its port OF nodes in sja1105_parse_ports_node(). Verdict: opt into strict DT bindings and out of workarounds. vsc73xx ~~~~~~~ compatible strings: - vitesse,vsc7385 - vitesse,vsc7388 - vitesse,vsc7395 - vitesse,vsc7398 2 occurrences in mainline device trees, both descriptions are fine. Verdict: opt into strict DT bindings and out of workarounds. xrs700x ~~~~~~~ compatible strings: - arrow,xrs7003e - arrow,xrs7003f - arrow,xrs7004e - arrow,xrs7004f no occurrences in mainline, we don't know. Verdict: opt out of strict DT bindings and into workarounds. Because there is a pattern where newly added switches reuse existing drivers more often than introducing new ones, I've opted for deciding who gets to opt into the workaround based on an OF compatible match table in the DSA core. The alternative would have been to add another boolean property to struct dsa_switch, like configure_vlan_while_not_filtering. But this avoids situations where sometimes driver maintainers obfuscate what goes on by sharing a common probing function, and therefore making new switches inherit old quirks. Side note, we also warn about missing properties for drivers that rely on the workaround. This isn't an indication that we'll break compatibility with those DT blobs any time soon, but is rather done to raise awareness about the change, for future DT blob authors. Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Acked-by: Alvin Šipraga <alsi@bang-olufsen.dk> # realtek Signed-off-by:
-
Vladimir Oltean authored
There is a subset of functions that applies only to shared (DSA and CPU) ports, yet this is difficult to comprehend by looking at their code alone. These are dsa_port_link_register_of(), dsa_port_link_unregister_of(), and the functions that only these 2 call. Rename this class of functions to dsa_shared_port_* to make this fact more evident, even if this goes against the apparent convention that function names in port.c must start with dsa_port_. Signed-off-by:
-
Vladimir Oltean authored
dsa_port_link_register_of() and dsa_port_link_unregister_of() are not written with the fact in mind that they can be called with a dp->dn that is NULL (as evidenced even by the _of suffix in their name), but this is exactly what happens. How this behaves will differ depending on whether the backing driver implements ->adjust_link() or not. If it doesn't, the "if (of_phy_is_fixed_link(dp->dn) || phy_np)" condition will return false, and dsa_port_link_register_of() will do nothing and return 0. If the driver does implement ->adjust_link(), the "if (of_phy_is_fixed_link(dp->dn))" condition will return false (dp->dn is NULL) and we will call dsa_port_setup_phy_of(). This will call dsa_port_get_phy_device(), which will also return NULL, and we will also do nothing and return 0. It is hard to maintain this code and make future changes to it in this state, so just suppress calls to these 2 functions if dp->dn is NULL. The only functional effect is that if the driver does implement ->adjust_link(), we'll stop printing this to the console: Using legacy PHYLIB callbacks. Please migrate to PHYLINK! but instead we'll always print: [ 8.539848] dsa-loop fixed-0:1f: skipping link registration for CPU port 5 This is for the better anyway, since "using legacy phylib callbacks" was misleading information - we weren't issuing _any_ callbacks due to dsa_port_get_phy_device() returning NULL. Signed-off-by:
-
Vladimir Oltean authored
Modules such as net/dsa/dsa_core.ko might want to iterate through an array of compatible strings for things such as validation (or rather, skipping it for some potentially broken drivers). of_device_is_compatible() is exported, by of_device_compatible_match() isn't. Export the latter as well, so we don't have to open-code the iteration. Cc: Frank Rowand <frowand.list@gmail.com> Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
-
Vladimir Oltean authored
It is desirable that new DSA drivers are written to expect that all their ports register with phylink, and not rely on the DSA core's workarounds to skip this process. To that end, DSA is being changed to warn existing drivers when such DT blobs are in use, and to opt new drivers out of the workarounds. Introduce another layer of validation in the DSA DT schema, and assert that CPU and DSA ports must have phylink-related properties present. Suggested-by:
Rob Herring <robh+dt@kernel.org> Signed-off-by:
-
Vladimir Oltean authored
To prevent warnings during "make dt_bindings_check" after dsa-port.yaml will make phylink properties mandatory, add phy-mode = "internal" to the example. This new property is taken straight out of the SoC dtsi at arch/arm/boot/dts/r9a06g032.dtsi, so it seems likely that only the example needs to be fixed, rather than DT blobs in circulation. Signed-off-by:
-
Vladimir Oltean authored
The ksz_switch_chips[] element for KSZ9477 says that port 5 is an xMII port and it supports speeds of 10/100/1000. The device tree example does declare a fixed-link at 1000, and RGMII is the only one of those modes that supports this speed, so use this phy-mode. The microchip,ksz8565 compatible string is not supported by the microchip driver, however on Microchip's product page it says that there are 5 ports, 4 of which have internal PHYs and the 5th is an MII/RMII/RGMII port. It's a bit strange that this is port@6, but it is probably just the way it is. Select an RGMII phy-mode for this one as well. Signed-off-by:
-
Vladimir Oltean authored
Looking at b53_srab_phylink_get_caps() I get no indication of what PHY modes does port 8 support, since it is implemented circularly based on the p->mode retrieved from the device tree (and in PHY_INTERFACE_MODE_NA it reports nothing to supported_interfaces). However if I look at the b53_switch_chips[] element for BCM58XX_DEVICE_ID, I see that port 8 is the IMP port, and SRAB means the IMP port is internal to the SoC. So use phy-mode = "internal" in the example. Note that this will make b53_srab_phylink_get_caps() go through the "default" case and report PHY_INTERFACE_MODE_INTERNAL to supported_interfaces, which is probably a good thing. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
-
Vladimir Oltean authored
Looking at hellcreek_phylink_get_caps(), I see that depending on whether is_100_mbits is set, speeds of 1G or of 100M will be advertised. The de1soc_r1_pdata sets is_100_mbits to true. The PHY modes declared in the capabilities are MII, RGMII and GMII. GMII doesn't support 100Mbps, and as for RGMII, it would be a bit implausible to me to support this PHY mode but limit it to only 25 MHz. So I've settled on MII as a phy-mode in the example, and a fixed-link of 100Mbps. As a side note, there exists such a thing as "rev-mii", because the MII protocol is asymmetric, and "mii" is the designation for the MAC side (expected to be connected to a PHY), and "rev-mii" is the designation for the PHY side (expected to be connected to a MAC). I wonder whether "mii" or "rev-mii" should actually be used here, since this is a CPU port and presumably connected to another MAC. Signed-off-by:
Kurt Kanzenbach <kurt@linutronix.de> Signed-off-by:
-
Vladimir Oltean authored
Judging by xrs700x_phylink_get_caps(), I deduce that this switch supports the RGMII modes on port 3, so state this phy-mode in the example, such that users are encouraged to not rely on avoiding phylink for this port. Signed-off-by:
-
- 22 Aug, 2022 1 commit
-
-
Maksym Glubokiy authored
Port event data must stored to port-state cache regardless of whether the port uses phylink or not since this data is used by ethtool. Fixes: 52323ef7 ("net: marvell: prestera: add phylink support") Signed-off-by:
Oleksandr Mazur <oleksandr.mazur@plvision.eu> Signed-off-by:
Maksym Glubokiy <maksym.glubokiy@plvision.eu> Signed-off-by:
David S. Miller <davem@davemloft.net>
-
