[PATCH net-next] net: phylink: reimplement population of pl->supported for in-band

[PATCH net-next] net: phylink: reimplement population of pl->supported for in-band

[Vladimir Oltean]

phylink_parse_mode() populates all possible supported link modes for a
given phy_interface_t, for the case where a phylib phy may be absent and
we can't retrieve the supported link modes from that.

Russell points out that since the introduction of the generic validation
helpers phylink_get_capabilities() and phylink_caps_to_linkmodes(), we
can rewrite this procedure to populate the pl->supported mask, so that
instead of spelling out the link modes, we derive an intermediary
mac_capabilities bit field, and we convert that to the equivalent link
modes.

Suggested-by: Russell King (Oracle) <linux@armlinux.org.uk>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 drivers/net/phy/phylink.c | 71 +++------------------------------------
 1 file changed, 5 insertions(+), 66 deletions(-)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 48d3bd3e9fc7..298dfd6982a5 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -883,6 +883,7 @@ static int phylink_parse_mode(struct phylink *pl,
 {
 	struct fwnode_handle *dn;
 	const char *managed;
+	unsigned long caps;
 
 	dn = fwnode_get_named_child_node(fwnode, "fixed-link");
 	if (dn || fwnode_property_present(fwnode, "fixed-link"))
@@ -915,80 +916,18 @@ static int phylink_parse_mode(struct phylink *pl,
 		case PHY_INTERFACE_MODE_RGMII_RXID:
 		case PHY_INTERFACE_MODE_RGMII_TXID:
 		case PHY_INTERFACE_MODE_RTBI:
-			phylink_set(pl->supported, 10baseT_Half);
-			phylink_set(pl->supported, 10baseT_Full);
-			phylink_set(pl->supported, 100baseT_Half);
-			phylink_set(pl->supported, 100baseT_Full);
-			phylink_set(pl->supported, 1000baseT_Half);
-			phylink_set(pl->supported, 1000baseT_Full);
-			break;
-
 		case PHY_INTERFACE_MODE_1000BASEX:
-			phylink_set(pl->supported, 1000baseX_Full);
-			break;
-
 		case PHY_INTERFACE_MODE_2500BASEX:
-			phylink_set(pl->supported, 2500baseX_Full);
-			break;
-
 		case PHY_INTERFACE_MODE_5GBASER:
-			phylink_set(pl->supported, 5000baseT_Full);
-			break;
-
 		case PHY_INTERFACE_MODE_25GBASER:
-			phylink_set(pl->supported, 25000baseCR_Full);
-			phylink_set(pl->supported, 25000baseKR_Full);
-			phylink_set(pl->supported, 25000baseSR_Full);
-			fallthrough;
 		case PHY_INTERFACE_MODE_USXGMII:
 		case PHY_INTERFACE_MODE_10GKR:
 		case PHY_INTERFACE_MODE_10GBASER:
-			phylink_set(pl->supported, 10baseT_Half);
-			phylink_set(pl->supported, 10baseT_Full);
-			phylink_set(pl->supported, 100baseT_Half);
-			phylink_set(pl->supported, 100baseT_Full);
-			phylink_set(pl->supported, 1000baseT_Half);
-			phylink_set(pl->supported, 1000baseT_Full);
-			phylink_set(pl->supported, 1000baseX_Full);
-			phylink_set(pl->supported, 1000baseKX_Full);
-			phylink_set(pl->supported, 2500baseT_Full);
-			phylink_set(pl->supported, 2500baseX_Full);
-			phylink_set(pl->supported, 5000baseT_Full);
-			phylink_set(pl->supported, 10000baseT_Full);
-			phylink_set(pl->supported, 10000baseKR_Full);
-			phylink_set(pl->supported, 10000baseKX4_Full);
-			phylink_set(pl->supported, 10000baseCR_Full);
-			phylink_set(pl->supported, 10000baseSR_Full);
-			phylink_set(pl->supported, 10000baseLR_Full);
-			phylink_set(pl->supported, 10000baseLRM_Full);
-			phylink_set(pl->supported, 10000baseER_Full);
-			break;
-
 		case PHY_INTERFACE_MODE_XLGMII:
-			phylink_set(pl->supported, 25000baseCR_Full);
-			phylink_set(pl->supported, 25000baseKR_Full);
-			phylink_set(pl->supported, 25000baseSR_Full);
-			phylink_set(pl->supported, 40000baseKR4_Full);
-			phylink_set(pl->supported, 40000baseCR4_Full);
-			phylink_set(pl->supported, 40000baseSR4_Full);
-			phylink_set(pl->supported, 40000baseLR4_Full);
-			phylink_set(pl->supported, 50000baseCR2_Full);
-			phylink_set(pl->supported, 50000baseKR2_Full);
-			phylink_set(pl->supported, 50000baseSR2_Full);
-			phylink_set(pl->supported, 50000baseKR_Full);
-			phylink_set(pl->supported, 50000baseSR_Full);
-			phylink_set(pl->supported, 50000baseCR_Full);
-			phylink_set(pl->supported, 50000baseLR_ER_FR_Full);
-			phylink_set(pl->supported, 50000baseDR_Full);
-			phylink_set(pl->supported, 100000baseKR4_Full);
-			phylink_set(pl->supported, 100000baseSR4_Full);
-			phylink_set(pl->supported, 100000baseCR4_Full);
-			phylink_set(pl->supported, 100000baseLR4_ER4_Full);
-			phylink_set(pl->supported, 100000baseKR2_Full);
-			phylink_set(pl->supported, 100000baseSR2_Full);
-			phylink_set(pl->supported, 100000baseCR2_Full);
-			phylink_set(pl->supported, 100000baseLR2_ER2_FR2_Full);
-			phylink_set(pl->supported, 100000baseDR2_Full);
+			caps = ~(MAC_SYM_PAUSE | MAC_ASYM_PAUSE);
+			caps = phylink_get_capabilities(pl->link_config.interface, caps,
+							RATE_MATCH_NONE);
+			phylink_caps_to_linkmodes(pl->supported, caps);
 			break;
 
 		default:
-- 
2.34.1

Re: [PATCH net-next] net: phylink: reimplement population of pl->supported for in-band

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (main)
by David S. Miller <davem@davemloft.net>:

On Wed, 13 Dec 2023 17:51:42 +0200 you wrote:
> phylink_parse_mode() populates all possible supported link modes for a
> given phy_interface_t, for the case where a phylib phy may be absent and
> we can't retrieve the supported link modes from that.
> 
> Russell points out that since the introduction of the generic validation
> helpers phylink_get_capabilities() and phylink_caps_to_linkmodes(), we
> can rewrite this procedure to populate the pl->supported mask, so that
> instead of spelling out the link modes, we derive an intermediary
> mac_capabilities bit field, and we convert that to the equivalent link
> modes.
> 
> [...]

Here is the summary with links:
  - [net-next] net: phylink: reimplement population of pl->supported for in-band
    https://git.kernel.org/netdev/net-next/c/37a8997fc5a5

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html

Re: [PATCH net-next] net: phylink: reimplement population of pl->supported for in-band

[Russell King (Oracle)]

I haven't reviewed this yet, and I said that I probably wouldn't have
time. Do I need to spend time stating this on every email I receive?
Do I have time to do that? No.

On Sun, Dec 17, 2023 at 01:11:52AM +0000, patchwork-bot+netdevbpf@kernel.org wrote:
> Hello:
> 
> This patch was applied to netdev/net-next.git (main)
> by David S. Miller <davem@davemloft.net>:
> 
> On Wed, 13 Dec 2023 17:51:42 +0200 you wrote:
> > phylink_parse_mode() populates all possible supported link modes for a
> > given phy_interface_t, for the case where a phylib phy may be absent and
> > we can't retrieve the supported link modes from that.
> > 
> > Russell points out that since the introduction of the generic validation
> > helpers phylink_get_capabilities() and phylink_caps_to_linkmodes(), we
> > can rewrite this procedure to populate the pl->supported mask, so that
> > instead of spelling out the link modes, we derive an intermediary
> > mac_capabilities bit field, and we convert that to the equivalent link
> > modes.
> > 
> > [...]
> 
> Here is the summary with links:
>   - [net-next] net: phylink: reimplement population of pl->supported for in-band
>     https://git.kernel.org/netdev/net-next/c/37a8997fc5a5
> 
> You are awesome, thank you!
> -- 
> Deet-doot-dot, I am a bot.
> https://korg.docs.kernel.org/patchwork/pwbot.html
> 
> 
> 

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!