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Date: Wed, 28 Sep 2022 02:47:46 +0300 From: Vladimir Oltean <vladimir.oltean@....com> To: netdev@...r.kernel.org Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Xiaoliang Yang <xiaoliang.yang_1@....com>, Rui Sousa <rui.sousa@....com>, Claudiu Manoil <claudiu.manoil@....com>, Alexandre Belloni <alexandre.belloni@...tlin.com>, UNGLinuxDriver@...rochip.com, Horatiu Vultur <horatiu.vultur@...rochip.com>, Andrew Lunn <andrew@...n.ch>, Vivien Didelot <vivien.didelot@...il.com>, Florian Fainelli <f.fainelli@...il.com>, Michael Walle <michael@...le.cc>, Vinicius Costa Gomes <vinicius.gomes@...el.com>, Maxim Kochetkov <fido_max@...ox.ru>, Colin Foster <colin.foster@...advantage.com>, Richie Pearn <richard.pearn@....com>, Kurt Kanzenbach <kurt@...utronix.de>, Vladimir Oltean <olteanv@...il.com>, Jamal Hadi Salim <jhs@...atatu.com>, Cong Wang <xiyou.wangcong@...il.com>, Jiri Pirko <jiri@...nulli.us>, linux-kernel@...r.kernel.org Subject: [PATCH v3 net-next 8/8] net: enetc: offload per-tc max SDU from tc-taprio The driver currently sets the PTCMSDUR register statically to the max MTU supported by the interface. Keep this logic if tc-taprio is absent or if the max_sdu for a traffic class is 0, and follow the requested max SDU size otherwise. Signed-off-by: Vladimir Oltean <vladimir.oltean@....com> --- v1->v2: none v2->v3: implement TC_QUERY_CAPS with TC_SETUP_QDISC_TAPRIO drivers/net/ethernet/freescale/enetc/enetc.h | 5 +++ .../net/ethernet/freescale/enetc/enetc_pf.c | 27 ++++++++++++++-- .../net/ethernet/freescale/enetc/enetc_qos.c | 31 +++++++++++++++++-- 3 files changed, 57 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h index 748677b2ce1f..161930a65f61 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc.h +++ b/drivers/net/ethernet/freescale/enetc/enetc.h @@ -453,7 +453,11 @@ static inline void enetc_cbd_free_data_mem(struct enetc_si *si, int size, data, *dma); } +void enetc_reset_ptcmsdur(struct enetc_hw *hw); +void enetc_set_ptcmsdur(struct enetc_hw *hw, u32 *queue_max_sdu); + #ifdef CONFIG_FSL_ENETC_QOS +int enetc_qos_query_caps(struct net_device *ndev, void *type_data); int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data); void enetc_sched_speed_set(struct enetc_ndev_priv *priv, int speed); int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data); @@ -521,6 +525,7 @@ static inline int enetc_psfp_disable(struct enetc_ndev_priv *priv) } #else +#define enetc_qos_query_caps(ndev, type_data) -EOPNOTSUPP #define enetc_setup_tc_taprio(ndev, type_data) -EOPNOTSUPP #define enetc_sched_speed_set(priv, speed) (void)0 #define enetc_setup_tc_cbs(ndev, type_data) -EOPNOTSUPP diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c index bb7750222691..bdf94335ee99 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c @@ -516,15 +516,34 @@ static void enetc_port_si_configure(struct enetc_si *si) enetc_port_wr(hw, ENETC_PSIVLANFMR, ENETC_PSIVLANFMR_VS); } -static void enetc_configure_port_mac(struct enetc_hw *hw) +void enetc_set_ptcmsdur(struct enetc_hw *hw, u32 *max_sdu) { int tc; - enetc_port_wr(hw, ENETC_PM0_MAXFRM, - ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE)); + for (tc = 0; tc < 8; tc++) { + u32 val = ENETC_MAC_MAXFRM_SIZE; + + if (max_sdu[tc]) + val = max_sdu[tc] + VLAN_ETH_HLEN; + + enetc_port_wr(hw, ENETC_PTCMSDUR(tc), val); + } +} + +void enetc_reset_ptcmsdur(struct enetc_hw *hw) +{ + int tc; for (tc = 0; tc < 8; tc++) enetc_port_wr(hw, ENETC_PTCMSDUR(tc), ENETC_MAC_MAXFRM_SIZE); +} + +static void enetc_configure_port_mac(struct enetc_hw *hw) +{ + enetc_port_wr(hw, ENETC_PM0_MAXFRM, + ENETC_SET_MAXFRM(ENETC_RX_MAXFRM_SIZE)); + + enetc_reset_ptcmsdur(hw); enetc_port_wr(hw, ENETC_PM0_CMD_CFG, ENETC_PM0_CMD_PHY_TX_EN | ENETC_PM0_CMD_TXP | ENETC_PM0_PROMISC); @@ -738,6 +757,8 @@ static int enetc_pf_setup_tc(struct net_device *ndev, enum tc_setup_type type, void *type_data) { switch (type) { + case TC_QUERY_CAPS: + return enetc_qos_query_caps(ndev, type_data); case TC_SETUP_QDISC_MQPRIO: return enetc_setup_tc_mqprio(ndev, type_data); case TC_SETUP_QDISC_TAPRIO: diff --git a/drivers/net/ethernet/freescale/enetc/enetc_qos.c b/drivers/net/ethernet/freescale/enetc/enetc_qos.c index ee28cb62afe8..e6416332ec79 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_qos.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_qos.c @@ -7,6 +7,7 @@ #include <linux/math64.h> #include <linux/refcount.h> #include <net/pkt_cls.h> +#include <net/pkt_sched.h> #include <net/tc_act/tc_gate.h> static u16 enetc_get_max_gcl_len(struct enetc_hw *hw) @@ -67,6 +68,7 @@ static int enetc_setup_taprio(struct net_device *ndev, tge = enetc_rd(hw, ENETC_PTGCR); if (!admin_conf->enable) { enetc_wr(hw, ENETC_PTGCR, tge & ~ENETC_PTGCR_TGE); + enetc_reset_ptcmsdur(hw); priv->active_offloads &= ~ENETC_F_QBV; @@ -122,10 +124,13 @@ static int enetc_setup_taprio(struct net_device *ndev, enetc_cbd_free_data_mem(priv->si, data_size, tmp, &dma); - if (!err) - priv->active_offloads |= ENETC_F_QBV; + if (err) + return err; - return err; + enetc_set_ptcmsdur(hw, admin_conf->max_sdu); + priv->active_offloads |= ENETC_F_QBV; + + return 0; } int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data) @@ -1594,3 +1599,23 @@ int enetc_setup_tc_psfp(struct net_device *ndev, void *type_data) return 0; } + +int enetc_qos_query_caps(struct net_device *ndev, void *type_data) +{ + struct enetc_ndev_priv *priv = netdev_priv(ndev); + struct tc_query_caps_base *base = type_data; + struct enetc_si *si = priv->si; + + switch (base->type) { + case TC_SETUP_QDISC_TAPRIO: { + struct tc_taprio_caps *caps = base->caps; + + if (si->hw_features & ENETC_SI_F_QBV) + caps->supports_queue_max_sdu = true; + + return 0; + } + default: + return -EOPNOTSUPP; + } +} -- 2.34.1
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