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path: root/drivers/net/phy/phylink.c
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2019-12-08net: phylink: update to use phy_support_asym_pause()Russell King
Use phy_support_asym_pause() rather than open-coding it. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-11-25net: sfp: rework upstream interfaceRussell King
The current upstream interface is an all-or-nothing, which is sub-optimal for future changes, as it doesn't allow the upstream driver to prepare for the SFP module becoming available, as it is at boot. Switch to a find-sfp-bus, add-upstream, del-upstream, put-sfp-bus interface structure instead, which allows the upstream driver to prepare for a module being available as soon as add-upstream is called. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-11-25net: sfp: move fwnode parsing into sfp-bus layerRussell King
Rather than parsing the sfp firmware node in phylink, parse it in the sfp-bus code, so we can re-use this code for PHYs without having to duplicate the parsing. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-11-25net: phylink: use more linkmode_*Russell King
Use more linkmode_* helpers rather than open-coding the bitmap operations. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-11-19net: phylink: fix link mode modification in PHY modeRussell King
Modifying the link settings via phylink_ethtool_ksettings_set() and phylink_ethtool_set_pauseparam() didn't always work as intended for PHY based setups, as calling phylink_mac_config() would result in the unresolved configuration being committed to the MAC, rather than the configuration with the speed and duplex setting. This would work fine if the update caused the link to renegotiate, but if no settings have changed, phylib won't trigger a renegotiation cycle, and the MAC will be left incorrectly configured. Avoid calling phylink_mac_config() unless we are using an inband mode in phylink_ethtool_ksettings_set(), and use phy_set_asym_pause() as introduced in 4.20 to set the PHY settings in phylink_ethtool_set_pauseparam(). Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-19net: phylink: update documentation on create and destroyRussell King
Update the documentation on phylink's create and destroy functions to explicitly state that the rtnl lock must not be held while calling these. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-01net: phylink: Fix phylink_dbg() macroFlorian Fainelli
The phylink_dbg() macro does not follow dynamic debug or defined(DEBUG) and as a result, it spams the kernel log since a PR_DEBUG level is currently used. Fix it to be defined appropriately whether CONFIG_DYNAMIC_DEBUG or defined(DEBUG) are set. Fixes: 17091180b152 ("net: phylink: Add phylink_{printk, err, warn, info, dbg} macros") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-09phylink: fix kernel-doc warningsRandy Dunlap
Fix kernel-doc warnings in phylink.c: ../drivers/net/phy/phylink.c:595: warning: Function parameter or member 'config' not described in 'phylink_create' ../drivers/net/phy/phylink.c:595: warning: Excess function parameter 'ndev' description in 'phylink_create' Fixes: 8796c8923d9c ("phylink: add documentation for kernel APIs") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
2019-09-07net: phylink: Fix flow control resolutionStefan Chulski
Regarding to IEEE 802.3-2015 standard section 2 28B.3 Priority resolution - Table 28-3 - Pause resolution In case of Local device Pause=1 AsymDir=0, Link partner Pause=1 AsymDir=1, Local device resolution should be enable PAUSE transmit, disable PAUSE receive. And in case of Local device Pause=1 AsymDir=1, Link partner Pause=1 AsymDir=0, Local device resolution should be enable PAUSE receive, disable PAUSE transmit. Fixes: 9525ae83959b ("phylink: add phylink infrastructure") Signed-off-by: Stefan Chulski <stefanc@marvell.com> Reported-by: Shaul Ben-Mayor <shaulb@marvell.com> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-27net: phylink: Fix flow control for fixed-linkRené van Dorst
In phylink_parse_fixedlink() the pl->link_config.advertising bits are AND with pl->supported, pl->supported is zeroed and only the speed/duplex modes and MII bits are set. So pl->link_config.advertising always loses the flow control/pause bits. By setting Pause and Asym_Pause bits in pl->supported, the flow control work again when devicetree "pause" is set in fixes-link node and the MAC advertise that is supports pause. Results with this patch. Legend: - DT = 'Pause' is set in the fixed-link in devicetree. - validate() = ‘Yes’ means phylink_set(mask, Pause) is set in the validate(). - flow = results reported my link is Up line. +-----+------------+-------+ | DT | validate() | flow | +-----+------------+-------+ | Yes | Yes | rx/tx | | No | Yes | off | | Yes | No | off | +-----+------------+-------+ Fixes: 9525ae83959b ("phylink: add phylink infrastructure") Signed-off-by: René van Dorst <opensource@vdorst.com> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-24net: phylink: don't start and stop SGMII PHYs in SFP modules twiceArseny Solokha
SFP modules connected using the SGMII interface have their own PHYs which are handled by the struct phylink's phydev field. On the other hand, for the modules connected using 1000Base-X interface that field is not set. Since commit ce0aa27ff3f6 ("sfp: add sfp-bus to bridge between network devices and sfp cages") phylink_start() ends up setting the phydev field using the sfp-bus infrastructure, which eventually calls phy_start() on it, and then calling phy_start() again on the same phydev from phylink_start() itself. Similar call sequence holds for phylink_stop(), only in the reverse order. This results in WARNs during network interface bringup and shutdown when a copper SFP module is connected, as phy_start() and phy_stop() are called twice in a row for the same phy_device: % ip link set up dev eth0 ------------[ cut here ]------------ called from state UP WARNING: CPU: 1 PID: 155 at drivers/net/phy/phy.c:895 phy_start+0x74/0xc0 Modules linked in: CPU: 1 PID: 155 Comm: backend Not tainted 5.2.0+ #1 NIP: c0227bf0 LR: c0227bf0 CTR: c004d224 REGS: df547720 TRAP: 0700 Not tainted (5.2.0+) MSR: 00029000 <CE,EE,ME> CR: 24002822 XER: 00000000 GPR00: c0227bf0 df5477d8 df5d7080 00000014 df9d2370 df9d5ac4 1f4eb000 00000001 GPR08: c061fe58 00000000 00000000 df5477d8 0000003c 100c8768 00000000 00000000 GPR16: df486a00 c046f1c8 c046eea0 00000000 c046e904 c0239604 db68449c 00000000 GPR24: e9083204 00000000 00000001 db684460 e9083404 00000000 db6dce00 db6dcc00 NIP [c0227bf0] phy_start+0x74/0xc0 LR [c0227bf0] phy_start+0x74/0xc0 Call Trace: [df5477d8] [c0227bf0] phy_start+0x74/0xc0 (unreliable) [df5477e8] [c023cad0] startup_gfar+0x398/0x3f4 [df547828] [c023cf08] gfar_enet_open+0x364/0x374 [df547898] [c029d870] __dev_open+0xe4/0x140 [df5478c8] [c029db70] __dev_change_flags+0xf0/0x188 [df5478f8] [c029dc28] dev_change_flags+0x20/0x54 [df547918] [c02ae304] do_setlink+0x310/0x818 [df547a08] [c02b1eb8] __rtnl_newlink+0x384/0x6b0 [df547c28] [c02b222c] rtnl_newlink+0x48/0x68 [df547c48] [c02ad7c8] rtnetlink_rcv_msg+0x240/0x27c [df547c98] [c02cc068] netlink_rcv_skb+0x8c/0xf0 [df547cd8] [c02cba3c] netlink_unicast+0x114/0x19c [df547d08] [c02cbd74] netlink_sendmsg+0x2b0/0x2c0 [df547d58] [c027b668] sock_sendmsg_nosec+0x20/0x40 [df547d68] [c027d080] ___sys_sendmsg+0x17c/0x1dc [df547e98] [c027df7c] __sys_sendmsg+0x68/0x84 [df547ef8] [c027e430] sys_socketcall+0x1a0/0x204 [df547f38] [c000d1d8] ret_from_syscall+0x0/0x38 --- interrupt: c01 at 0xfd4e030 LR = 0xfd4e010 Instruction dump: 813f0188 38800000 2b890005 419d0014 3d40c046 5529103a 394aa208 7c8a482e 3c60c046 3863a1b8 4cc63182 4be009a1 <0fe00000> 48000030 3c60c046 3863a1d0 ---[ end trace d4c095aeaf6ea998 ]--- and % ip link set down dev eth0 ------------[ cut here ]------------ called from state HALTED WARNING: CPU: 1 PID: 184 at drivers/net/phy/phy.c:858 phy_stop+0x3c/0x88 <...> Call Trace: [df581788] [c0228450] phy_stop+0x3c/0x88 (unreliable) [df581798] [c022d548] sfp_sm_phy_detach+0x1c/0x44 [df5817a8] [c022e8cc] sfp_sm_event+0x4b0/0x87c [df581848] [c022f04c] sfp_upstream_stop+0x34/0x44 [df581858] [c0225608] phylink_stop+0x7c/0xe4 [df581868] [c023c57c] stop_gfar+0x7c/0x94 [df581888] [c023c5b8] gfar_close+0x24/0x94 [df5818a8] [c0298688] __dev_close_many+0xdc/0xf8 [df5818c8] [c029db58] __dev_change_flags+0xd8/0x188 [df5818f8] [c029dc28] dev_change_flags+0x20/0x54 [df581918] [c02ae304] do_setlink+0x310/0x818 [df581a08] [c02b1eb8] __rtnl_newlink+0x384/0x6b0 [df581c28] [c02b222c] rtnl_newlink+0x48/0x68 [df581c48] [c02ad7c8] rtnetlink_rcv_msg+0x240/0x27c [df581c98] [c02cc068] netlink_rcv_skb+0x8c/0xf0 [df581cd8] [c02cba3c] netlink_unicast+0x114/0x19c [df581d08] [c02cbd74] netlink_sendmsg+0x2b0/0x2c0 [df581d58] [c027b668] sock_sendmsg_nosec+0x20/0x40 [df581d68] [c027d080] ___sys_sendmsg+0x17c/0x1dc [df581e98] [c027df7c] __sys_sendmsg+0x68/0x84 [df581ef8] [c027e430] sys_socketcall+0x1a0/0x204 [df581f38] [c000d1d8] ret_from_syscall+0x0/0x38 <...> ---[ end trace d4c095aeaf6ea999 ]--- SFP modules with the 1000Base-X interface are not affected. Place explicit calls to phy_start() and phy_stop() before enabling or after disabling an attached SFP module, where phydev is not yet set (or is already unset), so they will be made only from the inside of sfp-bus, if needed. Fixes: 217962615662 ("net: phy: warn if phy_start is called from invalid state") Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Some ISDN files that got removed in net-next had some changes done in mainline, take the removals. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-04net: phylink: avoid reducing support maskRussell King
Avoid reducing the support mask as a result of the interface type selected for SFP modules, or when setting the link settings through ethtool - this should only change when the supported link modes of the hardware combination change. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-31net: sfp: remove sfp-bus use of netdevsRussell King
The sfp-bus code now no longer has any use for the network device structure, so remove its use. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-31net: sfp: add mandatory attach/detach methods for sfp busesRussell King
Add attach and detach methods for SFP buses, which will allow us to get rid of the netdev storage in sfp-bus. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-31net: phylink: support for link gpio interruptRussell King
Add support for using GPIO interrupts with a fixed-link GPIO rather than polling the GPIO every second and invoking the phylink resolution. This avoids unnecessary calls to mac_config(). Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-31net: phylink: remove netdev from phylink mii ioctl emulationRussell King
The netdev used in the phylink ioctl emulation is never used, so let's remove it. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
The phylink conflict was between a bug fix by Russell King to make sure we have a consistent PHY interface mode, and a change in net-next to pull some code in phylink_resolve() into the helper functions phylink_mac_link_{up,down}() On the dp83867 side it's mostly overlapping changes, with the 'net' side removing a condition that was supposed to trigger for RGMII but because of how it was coded never actually could trigger. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-29net: phylink: Add phylink_{printk, err, warn, info, dbg} macrosIoana Ciornei
With the latest addition to the PHYLINK infrastructure, we are faced with a decision on when to print necessary info using the struct net_device and when with the struct device. Add a series of macros that encapsulate this decision and replace all uses of netdev_err&co with phylink_err. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-29net: phylink: Add PHYLINK_DEV operation typeIoana Ciornei
In the PHYLINK_DEV operation type, the PHYLINK infrastructure can work without an attached net_device. For printing usecases, instead, a struct device * should be passed to PHYLINK using the phylink_config structure. Also, netif_carrier_* calls ar guarded by the presence of a valid net_device. When using the PHYLINK_DEV operation type, we cannot check link status using the netif_carrier_ok() API so instead, keep an internal state of the MAC and call mac_link_{down,up} only when the link changed. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-29net: phylink: Add struct phylink_config to PHYLINK APIIoana Ciornei
The phylink_config structure will encapsulate a pointer to a struct device and the operation type requested for this instance of PHYLINK. This patch does not make any functional changes, it just transitions the PHYLINK internals and all its users to the new API. A pointer to a phylink_config structure will be passed to phylink_create() instead of the net_device directly. Also, the same phylink_config pointer will be passed back to all phylink_mac_ops callbacks instead of the net_device. Using this mechanism, a PHYLINK user can get the original net_device using a structure such as 'to_net_dev(config->dev)' or directly the structure containing the phylink_config using a container_of call. At the moment, only the PHYLINK_NETDEV is defined as a valid operation type for PHYLINK. In this mode, a valid reference to a struct device linked to the original net_device should be passed to PHYLINK through the phylink_config structure. This API changes is mainly driven by the necessity of adding a new operation type in PHYLINK that disconnects the phy_device from the net_device and also works when the net_device is lacking. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-29net: phylink: Add phylink_mac_link_{up, down} wrapper functionsIoana Ciornei
This is a cosmetic patch that reduces the clutter in phylink_resolve around calling the .mac_link_up/.mac_link_down driver callbacks. In a further patch this logic will be extended to emit notifications in case a net device does not exist. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-29net: phylink: ensure consistent phy interface modeRussell King
Ensure that we supply the same phy interface mode to mac_link_down() as we did for the corresponding mac_link_up() call. This ensures that MAC drivers that use the phy interface mode in these methods can depend on mac_link_down() always corresponding to a mac_link_up() call for the same interface mode. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-21net: phylink: ensure inband AN works correctlyRussell King
Do not update the link interface mode while the link is down to avoid spurious link interface changes. Always call mac_config if we have a PHY to propagate the pause mode settings to the MAC. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
2019-03-01net: phy: phylink: fix uninitialized variable in phylink_get_mac_stateHeiner Kallweit
When debugging an issue I found implausible values in state->pause. Reason in that state->pause isn't initialized and later only single bits are changed. Also the struct itself isn't initialized in phylink_resolve(). So better initialize state->pause and other not yet initialized fields. v2: - use right function name in subject v3: - initialize additional fields Fixes: 9525ae83959b ("phylink: add phylink infrastructure") Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
The netfilter conflicts were rather simple overlapping changes. However, the cls_tcindex.c stuff was a bit more complex. On the 'net' side, Cong is fixing several races and memory leaks. Whilst on the 'net-next' side we have Vlad adding the rtnl-ness support. What I've decided to do, in order to resolve this, is revert the conversion over to using a workqueue that Cong did, bringing us back to pure RCU. I did it this way because I believe that either Cong's races don't apply with have Vlad did things, or Cong will have to implement the race fix slightly differently. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-12net: phylink: avoid resolving link state too earlyRussell King
During testing on Armada 388 platforms, it was found with a certain module configuration that it was possible to trigger a kernel oops during the module load process, caused by the phylink resolver being triggered for a currently disabled interface. This problem was introduced by changing the way the SFP registration works, which now can result in the sfp link down notification being called during phylink_create(). Fixes: b5bfc21af5cb ("net: sfp: do not probe SFP module before we're attached") Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-12net: phylink: add phylink_init_eee() helperRussell King
Provide phylink_init_eee() to allow MAC drivers to initialise PHY EEE from within the ethtool set_eee() method. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-12net: phylink: only call mac_config() during resolve when link is upRussell King
There's little point calling mac_config() when the link is down. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-24net: phy: change phy_start_interrupts to phy_request_interruptHeiner Kallweit
Now that we enable the interrupts in phy_start() we don't have to do it before. Therefore remove enabling interrupts from phy_start_interrupts() and rename this function to reflect the changed functionality. v2: - improve warning to clearly state that we fall back to polling Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-24net: phy: start state machine in phy_start onlyHeiner Kallweit
The state machine is a no-op before phy_start() has been called. Therefore let's enable it in phy_start() only. In phy_start() let's call phy_start_machine() instead of phy_trigger_machine(). phy_start_machine is an alias for phy_trigger_machine but it makes clearer that we start the state machine here instead of just triggering a run. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-22net: phy: Fixup GPLv2 SPDX tags based on license textAndrew Lunn
A few PHY drivers have the GPLv2 license text. They then either have a MODULE_LICENSE() of GPLv2+, or an SPDX tag of GPLv2+. Since the license text is much easier to understand than either the SPDX tag or the MODULE_LICENSE, use it as the definitive source of the licence, and fixup with others when there are contradictions. Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Jonas Jensen <jonas.jensen@gmail.com> Cc: Laurent Pinchart <laurentp@cse-semaphore.com> Cc: Paulius Zaleckas <paulius.zaleckas@teltonika.lt> Cc: Scott Wood <scottwood@freescale.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Andrew F. Davis <afd@ti.com> Acked-by: Dan Murphy <dmurphy@ti.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-11net: ethernet: Convert phydev advertize and supported from u32 to link modeAndrew Lunn
There are a few MAC/PHYs combinations which now support > 1Gbps. These may need to make use of link modes with bits > 31. Thus their supported PHY features or advertised features cannot be implemented using the current bitmap in a u32. Convert to using a linkmode bitmap, which can support all the currently devices link modes, and is future proof as more modes are added. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
2018-10-05net: phy: phylink: fix SFP interface autodetectionBaruch Siach
When connecting SFP PHY to phylink use the detected interface. Otherwise, the link fails to come up when the configured 'phy-mode' differs from the SFP detected mode. Move most of phylink_connect_phy() into __phylink_connect_phy(), and leave phylink_connect_phy() as a wrapper. phylink_sfp_connect_phy() can now pass the SFP detected PHY interface to __phylink_connect_phy(). This fixes 1GB SFP module link up on eth3 of the Macchiatobin board that is configured in the DT to "2500base-x" phy-mode. Fixes: 9525ae83959b6 ("phylink: add phylink infrastructure") Suggested-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-01net: phy: Move linkmode helpers to somewhere publicAndrew Lunn
phylink has some useful helpers to working with linkmode bitmaps. Move them to there own header so other code can use them. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-19net: phy: phylink: ensure the carrier is off when starting phylinkAntoine Tenart
Phylink made an assumption about the carrier state being down when calling phylink_start(). If this assumption isn't satisfied, the internal phylink state could misbehave and a net device could end up not being functional. This patch fixes this by explicitly calling netif_carrier_off() in phylink_start(). Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09phylink: add helper for configuring 2500BaseX modesRussell King
Add a helper for MAC drivers to use in their validate callback to deal with 2500BaseX vs 1000BaseX modes, where the hardware supports both but it is not possible to automatically select between them. This helper defaults to 1000BaseX, as that is the 802.3 standard, and will allow users to select 2500BaseX either by forcing the speed if AN is disabled, or by changing the advertising mask if AN is enabled. Disabling AN is not recommended as it is only the speed that we're interested in controlling, not the duplex or pause mode parameters. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-21net: phy: phylink: Don't release NULL GPIOFlorian Fainelli
If CONFIG_GPIOLIB is disabled, gpiod_put() becomes a stub that produces a warning, this helped identify that we could be attempting to release a NULL pl->link_gpio GPIO descriptor, so guard against that. Fixes: daab3349ad1a ("net: phy: phylink: Release link GPIO") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-11net: phy: phylink: Poll link GPIOsRussell King
When using a fixed link with a link GPIO, we need to poll that GPIO to determine link state changes. This is consistent with what fixed_phy.c does. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-11net: phy: phylink: Release link GPIOFlorian Fainelli
We are not releasing the link GPIO descriptor with gpiod_put() which results in subsequent probing to get -EBUSY when calling fwnode_get_named_gpiod(). Fix this by doing the release in phylink_destroy(). Fixes: 9525ae83959b ("phylink: add phylink infrastructure") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-11net: phy: phylink: Use gpiod_get_value_cansleep()Florian Fainelli
The GPIO provider for the link GPIO line might require the use of the _cansleep() API, utilize that. This is safe to do since we run in workqueue context. Fixes: 9525ae83959b ("phylink: add phylink infrastructure") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30sfp/phylink: move module EEPROM ethtool access into netdev core ethtoolRussell King
Provide a pointer to the SFP bus in struct net_device, so that the ethtool module EEPROM methods can access the SFP directly, rather than needing every user to provide a hook for it. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-30net: phy: phylink: Provide PHY interface to mac_link_{up, down}Florian Fainelli
In preparation for having DSA transition entirely to PHYLINK, we need to pass a PHY interface type to the mac_link_{up,down} callbacks because we may have to make decisions on that (e.g: turn on/off RGMII interfaces etc.). We do not pass an entire phylink_link_state because not all parameters (pause, duplex etc.) are defined when the link is down, only link and interface are. Update mvneta accordingly since it currently implements phylink_mac_ops. Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-04net: phy: Fix spelling mistake: "advertisment"-> "advertisement"Colin Ian King
Trivial fix to spelling mistake in comments and error message text. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-01net: phylink: Remove redundant netdev.phydev assignmentRichard Cochran
As a part of working on MII time stamping infrastructure, I was trying to figure out how netdev->phydev gets assigned, and I stumbled across this. Ever since the new phylink code came in, the field is assigned twice. The function, phylink_connect_phy(), calls phy_attach_direct() phylink_bringup_phy() and phy_attach_direct() sets dev->phydev = phydev; but phylink_bringup_phy() then sets the same field again: pl->netdev->phydev = phy; Similarly, the function, phylink_of_phy_connect(), calls of_phy_attach() phy_attach_direct() phylink_bringup_phy() The removal code is also duplicated: phylink_disconnect_phy() pl->netdev->phydev = NULL; phy_disconnect() phy_detach() phydev->attached_dev->phydev = NULL; This patch removes the redundant assignments, restricting manipulation of the netdev.phydev field to phy_attach_direct() and phy_detach(). Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-28phylink,sfp: negotiate interface format with MACRussell King
Negotiate the interface format with the MAC rather than requiring it to be a fixed type specified solely by the SFP module. This allows modules that can work with several different interface signalling formats to select a format compatible with the MAC - for example, a Fiber module supporing Gigabit ethernet and faster connected to a Gigabit only MAC needs to select the 1000BASE-X mode. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
2018-01-08phylink: mark expected switch fall-throughs in phylink_mii_ioctlGustavo A. R. Silva
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Addresses-Coverity-ID: 1463447 ("Missing break in switch") Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: David S. Miller <davem@davemloft.net>