linux/drivers/net/phy/stubs.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Stubs for PHY library functionality called by the core network stack.
 * These are necessary because CONFIG_PHYLIB can be a module, and built-in
 * code cannot directly call symbols exported by modules.
 */
#include <linux/phylib_stubs.h>

const struct phylib_stubs *phylib_stubs;
EXPORT_SYMBOL_GPL(phylib_stubs);
net: phy: provide phylib stubs for hardware timestamping operations net/core/dev_ioctl.c (built-in code) will want to call phy_mii_ioctl() for hardware timestamping purposes. This is not directly possible, because phy_mii_ioctl() is a symbol provided under CONFIG_PHYLIB. Do something similar to what was done in DSA in commit 5a17818682cf ("net: dsa: replace NETDEV_PRE_CHANGE_HWTSTAMP notifier with a stub"), and arrange some indirect calls to phy_mii_ioctl() through a stub structure containing function pointers, that's provided by phylib as built-in even when CONFIG_PHYLIB=m, and which phy_init() populates at runtime (module insertion). Note: maybe the ownership of the ethtool_phy_ops singleton is backwards, and the methods exposed by that should be later merged into phylib_stubs. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://lore.kernel.org/r/20230801142824.1772134-12-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 2023-08-01 17:28:23 +03:00			`// SPDX-License-Identifier: GPL-2.0+`
			`/*`
			`* Stubs for PHY library functionality called by the core network stack.`
			`* These are necessary because CONFIG_PHYLIB can be a module, and built-in`
			`* code cannot directly call symbols exported by modules.`
			`*/`
			`#include <linux/phylib_stubs.h>`

			`const struct phylib_stubs *phylib_stubs;`
			`EXPORT_SYMBOL_GPL(phylib_stubs);`