From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D2703396B8C; Tue, 7 Jul 2026 09:22:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=211.75.126.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783416164; cv=none; b=kunemKKQjFoB0kdBHvQ0rWsWJsZRwLVPUDMN9XbG05xhOOt9yGM7UHVVeIHq1O310zB6n4PFwL+9tZ8BHQkaPRkNO0AyqCBWpztEdwh+AUKFafrohUgzA9GDZMOVnuLtVIwwJvIBkyXmUQFT8mUPxDAR9VfGaodu0PGQTk2SUhk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783416164; c=relaxed/simple; bh=zEW02xdNxdxtVLbHHrXCgDgvPJRsJc476xqLIoKrsU0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=atnUNTeFEBQjaLHTh3sG/pYMKoVAssXvJC8oyPU6qROfVSTgSFWeJAz+fK0nUIEnVo334fSkQt0WoVAiHzTM98aaOGyw8pICYA/Bmkk7isWrZYDNTNk5URbUy2+MDLDM8/azhF+cX07jDwLDOYGGuXE8sXzvmPnULYOgk+FHML8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=realsil.com.cn; spf=pass smtp.mailfrom=realsil.com.cn; dkim=pass (2048-bit key) header.d=realsil.com.cn header.i=@realsil.com.cn header.b=BOuJ6arj; arc=none smtp.client-ip=211.75.126.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=realsil.com.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=realsil.com.cn Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=realsil.com.cn header.i=@realsil.com.cn header.b="BOuJ6arj" X-SpamFilter-By: ArmorX SpamTrap 5.80 with qID 6679GdowE1361138, This message is accepted by code: ctloc85258 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=realsil.com.cn; s=dkim; t=1783415800; bh=0/u5yFqgeBiCDpXpLLiaSBsrFkSiy48Oz+dvZzdt/JE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding:Content-Type; b=BOuJ6arjyg69wMdxMLtoeab7IBCca9VU/LksXB9cv4scxZS4kmv+K8Bw7+/P/Nygb TiVXuG4CCTLSiL8zj4ZxboxK/QXMk7ZJ8v8w0JmWq2zNHayshEcKV2pkVAAVzRYhGt WiMHv+ZRFKfjM6qkFtLgFaqFUKkchVzi8hx6FXN0dD7houdEZsdbtS6ZR/2ccmYiow MTA/QQ0Tbi89IbXv7MW4DQ8pDwPlywUkveAmkI1YL2mPIRSQQ6l/JvbNRyvH97shwy 6Zgs/kHcu5liCDuL4JOXlAGiuysc7h+lY9zl3KlES9rT4oOo0jx7WrtIOcVyzJkrd/ oYzmXIl2hjWIQ== Received: from RS-EX-MBS2.realsil.com.cn ([172.29.17.102]) by rtits2.realtek.com.tw (8.15.2/3.29/5.94) with ESMTPS id 6679GdowE1361138 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 7 Jul 2026 17:16:39 +0800 Received: from RS-EX-MBS1.realsil.com.cn (172.29.17.101) by RS-EX-MBS2.realsil.com.cn (172.29.17.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Tue, 7 Jul 2026 17:16:39 +0800 Received: from 172.29.37.154 (172.29.37.152) by RS-EX-MBS1.realsil.com.cn (172.29.17.101) with Microsoft SMTP Server id 15.2.2562.17 via Frontend Transport; Tue, 7 Jul 2026 17:16:39 +0800 From: javen To: , , , , , , , , CC: , , , , , , Javen Xu Subject: [PATCH net-next v5 2/8] net: phy: phylink: add helper to modify pause Date: Tue, 7 Jul 2026 17:16:30 +0800 Message-ID: <20260707091637.371-3-javen_xu@realsil.com.cn> X-Mailer: git-send-email 2.50.1.windows.1 In-Reply-To: <20260707091637.371-1-javen_xu@realsil.com.cn> References: <20260707091637.371-1-javen_xu@realsil.com.cn> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain From: Javen Xu For Realtek nics, when we enable jumbo, pause are not supported. So we must check the pause capabilities from ourself and lp. Signed-off-by: Javen Xu --- Changes in v5: - no changes, new file --- drivers/net/phy/phylink.c | 66 +++++++++++++++++++++++++++++++++++++++ include/linux/phylink.h | 2 ++ 2 files changed, 68 insertions(+) diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index 59dfe35afa54..c450ee33b75c 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -1828,6 +1828,72 @@ int phylink_set_fixed_link(struct phylink *pl, } EXPORT_SYMBOL_GPL(phylink_set_fixed_link); +/** + * phylink_set_mac_capabilities() - Dynamically update MAC capabilities + * @pl: a pointer to a &struct phylink returned from phylink_create() + * @mac_capabilities: the new MAC capabilities mask + * + * This function allows a MAC driver to dynamically change its capabilities, + * such as losing/gaining Pause frame support based on MTU size. + * It recalculates supported link modes and triggers renegotiation if needed. + */ +void phylink_set_mac_capabilities(struct phylink *pl, unsigned long mac_capabilities) +{ + struct phylink_link_state *config = &pl->link_config; + unsigned long caps_added, caps_removed; + + ASSERT_RTNL(); + + caps_added = mac_capabilities & ~pl->config->mac_capabilities; + caps_removed = pl->config->mac_capabilities & ~mac_capabilities; + + if (!caps_added && !caps_removed) + return; + + mutex_lock(&pl->state_mutex); + + pl->config->mac_capabilities = mac_capabilities; + + if (caps_removed & MAC_SYM_PAUSE) + linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT, pl->supported); + if (caps_removed & MAC_ASYM_PAUSE) + linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, pl->supported); + + linkmode_and(config->advertising, config->advertising, pl->supported); + + if (caps_added & MAC_SYM_PAUSE) { + linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, pl->supported); + if (pl->phydev && !phylink_test(pl->phydev->supported, Pause)) + linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT, pl->supported); + } + if (caps_added & MAC_ASYM_PAUSE) { + linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, pl->supported); + if (pl->phydev && !phylink_test(pl->phydev->supported, Asym_Pause)) + linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, pl->supported); + } + + linkmode_and(config->advertising, config->advertising, pl->supported); + + if (config->pause & MLO_PAUSE_AN) { + if (phylink_test(pl->supported, Pause)) + linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, config->advertising); + + if (phylink_test(pl->supported, Asym_Pause)) + linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, config->advertising); + } + + if (!pl->phydev) + phylink_change_inband_advert(pl); + + mutex_unlock(&pl->state_mutex); + + if (pl->phydev) { + linkmode_copy(pl->phydev->advertising, config->advertising); + phy_start_aneg(pl->phydev); + } +} +EXPORT_SYMBOL_GPL(phylink_set_mac_capabilities); + /** * phylink_create() - create a phylink instance * @config: a pointer to the target &struct phylink_config diff --git a/include/linux/phylink.h b/include/linux/phylink.h index 2bc0db3d52ac..56642ab961a7 100644 --- a/include/linux/phylink.h +++ b/include/linux/phylink.h @@ -842,4 +842,6 @@ void phylink_replay_link_begin(struct phylink *pl); void phylink_replay_link_end(struct phylink *pl); +void phylink_set_mac_capabilities(struct phylink *pl, unsigned long mac_capabilities); + #endif -- 2.43.0