mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 10:39:04 +00:00
910bdda6af
All patches automatically rebased. Build system: x86_64 Build-tested: bcm2711/RPi4B, mt7622/RT3200 Run-tested: bcm2711/RPi4B, mt7622/RT3200 Signed-off-by: John Audia <therealgraysky@proton.me>
116 lines
4.5 KiB
Diff
116 lines
4.5 KiB
Diff
From 001f4261fe4d5ae710cf1f445b6cae6d9d3ae26e Mon Sep 17 00:00:00 2001
|
|
From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
|
|
Date: Thu, 9 Dec 2021 13:11:48 +0000
|
|
Subject: [PATCH] net: phylink: use legacy_pre_march2020
|
|
|
|
Use the legacy flag to indicate whether we should operate in legacy
|
|
mode. This allows us to stop using the presence of a PCS as an
|
|
indicator to the age of the phylink user, and make PCS presence
|
|
optional.
|
|
|
|
Legacy mode involves:
|
|
1) calling mac_config() whenever the link comes up
|
|
2) calling mac_config() whenever the inband advertisement changes,
|
|
possibly followed by a call to mac_an_restart()
|
|
3) making use of mac_an_restart()
|
|
4) making use of mac_pcs_get_state()
|
|
|
|
All the above functionality was moved to a seperate "PCS" block of
|
|
operations in March 2020.
|
|
|
|
Update the documents to indicate that the differences that this flag
|
|
makes.
|
|
|
|
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
|
|
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
---
|
|
drivers/net/phy/phylink.c | 12 ++++++------
|
|
include/linux/phylink.h | 17 +++++++++++++++++
|
|
2 files changed, 23 insertions(+), 6 deletions(-)
|
|
|
|
--- a/drivers/net/phy/phylink.c
|
|
+++ b/drivers/net/phy/phylink.c
|
|
@@ -777,7 +777,7 @@ static void phylink_mac_pcs_an_restart(s
|
|
phylink_autoneg_inband(pl->cur_link_an_mode)) {
|
|
if (pl->pcs_ops)
|
|
pl->pcs_ops->pcs_an_restart(pl->pcs);
|
|
- else
|
|
+ else if (pl->config->legacy_pre_march2020)
|
|
pl->mac_ops->mac_an_restart(pl->config);
|
|
}
|
|
}
|
|
@@ -855,7 +855,7 @@ static int phylink_change_inband_advert(
|
|
if (test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state))
|
|
return 0;
|
|
|
|
- if (!pl->pcs_ops) {
|
|
+ if (!pl->pcs_ops && pl->config->legacy_pre_march2020) {
|
|
/* Legacy method */
|
|
phylink_mac_config(pl, &pl->link_config);
|
|
phylink_mac_pcs_an_restart(pl);
|
|
@@ -900,7 +900,8 @@ static void phylink_mac_pcs_get_state(st
|
|
|
|
if (pl->pcs_ops)
|
|
pl->pcs_ops->pcs_get_state(pl->pcs, state);
|
|
- else if (pl->mac_ops->mac_pcs_get_state)
|
|
+ else if (pl->mac_ops->mac_pcs_get_state &&
|
|
+ pl->config->legacy_pre_march2020)
|
|
pl->mac_ops->mac_pcs_get_state(pl->config, state);
|
|
else
|
|
state->link = 0;
|
|
@@ -1094,12 +1095,11 @@ static void phylink_resolve(struct work_
|
|
}
|
|
phylink_major_config(pl, false, &link_state);
|
|
pl->link_config.interface = link_state.interface;
|
|
- } else if (!pl->pcs_ops) {
|
|
+ } else if (!pl->pcs_ops && pl->config->legacy_pre_march2020) {
|
|
/* The interface remains unchanged, only the speed,
|
|
* duplex or pause settings have changed. Call the
|
|
* old mac_config() method to configure the MAC/PCS
|
|
- * only if we do not have a PCS installed (an
|
|
- * unconverted user.)
|
|
+ * only if we do not have a legacy MAC driver.
|
|
*/
|
|
phylink_mac_config(pl, &link_state);
|
|
}
|
|
--- a/include/linux/phylink.h
|
|
+++ b/include/linux/phylink.h
|
|
@@ -210,6 +210,10 @@ struct phylink_pcs *mac_select_pcs(struc
|
|
* negotiation completion state in @state->an_complete, and link up state
|
|
* in @state->link. If possible, @state->lp_advertising should also be
|
|
* populated.
|
|
+ *
|
|
+ * Note: This is a legacy method. This function will not be called unless
|
|
+ * legacy_pre_march2020 is set in &struct phylink_config and there is no
|
|
+ * PCS attached.
|
|
*/
|
|
void mac_pcs_get_state(struct phylink_config *config,
|
|
struct phylink_link_state *state);
|
|
@@ -250,6 +254,15 @@ int mac_prepare(struct phylink_config *c
|
|
* guaranteed to be correct, and so any mac_config() implementation must
|
|
* never reference these fields.
|
|
*
|
|
+ * Note: For legacy March 2020 drivers (drivers with legacy_pre_march2020 set
|
|
+ * in their &phylnk_config and which don't have a PCS), this function will be
|
|
+ * called on each link up event, and to also change the in-band advert. For
|
|
+ * non-legacy drivers, it will only be called to reconfigure the MAC for a
|
|
+ * "major" change in e.g. interface mode. It will not be called for changes
|
|
+ * in speed, duplex or pause modes or to change the in-band advertisement.
|
|
+ * In any case, it is strongly preferred that speed, duplex and pause settings
|
|
+ * are handled in the mac_link_up() method and not in this method.
|
|
+ *
|
|
* (this requires a rewrite - please refer to mac_link_up() for situations
|
|
* where the PCS and MAC are not tightly integrated.)
|
|
*
|
|
@@ -334,6 +347,10 @@ int mac_finish(struct phylink_config *co
|
|
/**
|
|
* mac_an_restart() - restart 802.3z BaseX autonegotiation
|
|
* @config: a pointer to a &struct phylink_config.
|
|
+ *
|
|
+ * Note: This is a legacy method. This function will not be called unless
|
|
+ * legacy_pre_march2020 is set in &struct phylink_config and there is no
|
|
+ * PCS attached.
|
|
*/
|
|
void mac_an_restart(struct phylink_config *config);
|
|
|