| Message ID | 20240828091901.3120935-4-danishanwar@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce HSR offload support for ICSSG | expand |
On 28/08/2024 12:18, MD Danish Anwar wrote: > Add support for offloading HSR port-to-port frame forward to hardware. > When the slave interfaces are added to the HSR interface, the PRU cores > will be stopped and ICSSG HSR firmwares will be loaded to them. > > Similarly, when HSR interface is deleted, the PRU cores will be stopped > and dual EMAC firmware will be loaded to them. And what happens if we first started with switch mode and then switched to HSR mode? Is this case possible and if yes should it revert to the last used mode instead of forcing to dual EMAC mode? > > This commit also renames some APIs that are common between switch and > hsr mode with '_fw_offload' suffix. > > Signed-off-by: MD Danish Anwar <danishanwar@ti.com> > --- > .../net/ethernet/ti/icssg/icssg_classifier.c | 1 + > drivers/net/ethernet/ti/icssg/icssg_config.c | 18 +-- > drivers/net/ethernet/ti/icssg/icssg_prueth.c | 117 +++++++++++++++++- > drivers/net/ethernet/ti/icssg/icssg_prueth.h | 6 + > 4 files changed, 130 insertions(+), 12 deletions(-) > > diff --git a/drivers/net/ethernet/ti/icssg/icssg_classifier.c b/drivers/net/ethernet/ti/icssg/icssg_classifier.c > index 9ec504d976d6..833ca86d0b71 100644 > --- a/drivers/net/ethernet/ti/icssg/icssg_classifier.c > +++ b/drivers/net/ethernet/ti/icssg/icssg_classifier.c > @@ -290,6 +290,7 @@ void icssg_class_set_host_mac_addr(struct regmap *miig_rt, const u8 *mac) > mac[2] << 16 | mac[3] << 24)); > regmap_write(miig_rt, MAC_INTERFACE_1, (u32)(mac[4] | mac[5] << 8)); > } > +EXPORT_SYMBOL_GPL(icssg_class_set_host_mac_addr); > > void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac) > { > diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.c b/drivers/net/ethernet/ti/icssg/icssg_config.c > index dae52a83a378..7b2e6c192ff3 100644 > --- a/drivers/net/ethernet/ti/icssg/icssg_config.c > +++ b/drivers/net/ethernet/ti/icssg/icssg_config.c > @@ -107,7 +107,7 @@ static const struct map hwq_map[2][ICSSG_NUM_OTHER_QUEUES] = { > }, > }; > > -static void icssg_config_mii_init_switch(struct prueth_emac *emac) > +static void icssg_config_mii_init_fw_offload(struct prueth_emac *emac) > { > struct prueth *prueth = emac->prueth; > int mii = prueth_emac_slice(emac); > @@ -278,7 +278,7 @@ static int emac_r30_is_done(struct prueth_emac *emac) > return 1; > } > > -static int prueth_switch_buffer_setup(struct prueth_emac *emac) > +static int prueth_fw_offload_buffer_setup(struct prueth_emac *emac) > { > struct icssg_buffer_pool_cfg __iomem *bpool_cfg; > struct icssg_rxq_ctx __iomem *rxq_ctx; > @@ -424,7 +424,7 @@ static void icssg_init_emac_mode(struct prueth *prueth) > icssg_class_set_host_mac_addr(prueth->miig_rt, mac); > } > > -static void icssg_init_switch_mode(struct prueth *prueth) > +static void icssg_init_fw_offload_mode(struct prueth *prueth) > { > u32 addr = prueth->shram.pa + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET; > int i; > @@ -455,8 +455,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) > struct icssg_flow_cfg __iomem *flow_cfg; > int ret; > > - if (prueth->is_switch_mode) > - icssg_init_switch_mode(prueth); > + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) > + icssg_init_fw_offload_mode(prueth); > else > icssg_init_emac_mode(prueth); > > @@ -472,8 +472,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) > regmap_update_bits(prueth->miig_rt, ICSSG_CFG_OFFSET, > ICSSG_CFG_DEFAULT, ICSSG_CFG_DEFAULT); > icssg_miig_set_interface_mode(prueth->miig_rt, slice, emac->phy_if); > - if (prueth->is_switch_mode) > - icssg_config_mii_init_switch(emac); > + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) > + icssg_config_mii_init_fw_offload(emac); > else > icssg_config_mii_init(emac); > icssg_config_ipg(emac); > @@ -498,8 +498,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) > writeb(0, config + SPL_PKT_DEFAULT_PRIORITY); > writeb(0, config + QUEUE_NUM_UNTAGGED); > > - if (prueth->is_switch_mode) > - ret = prueth_switch_buffer_setup(emac); > + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) > + ret = prueth_fw_offload_buffer_setup(emac); > else > ret = prueth_emac_buffer_setup(emac); > if (ret) > diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c > index 641e54849762..f4fd346fe6f5 100644 > --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c > +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c > @@ -13,6 +13,7 @@ > #include <linux/dma/ti-cppi5.h> > #include <linux/etherdevice.h> > #include <linux/genalloc.h> > +#include <linux/if_hsr.h> > #include <linux/if_vlan.h> > #include <linux/interrupt.h> > #include <linux/kernel.h> > @@ -40,6 +41,8 @@ > #define DEFAULT_PORT_MASK 1 > #define DEFAULT_UNTAG_MASK 1 > > +#define NETIF_PRUETH_HSR_OFFLOAD_FEATURES NETIF_F_HW_HSR_FWD > + > /* CTRLMMR_ICSSG_RGMII_CTRL register bits */ > #define ICSSG_CTRL_RGMII_ID_MODE BIT(24) > > @@ -118,6 +121,19 @@ static irqreturn_t prueth_tx_ts_irq(int irq, void *dev_id) > return IRQ_HANDLED; > } > > +static struct icssg_firmwares icssg_hsr_firmwares[] = { > + { > + .pru = "ti-pruss/am65x-sr2-pru0-pruhsr-fw.elf", > + .rtu = "ti-pruss/am65x-sr2-rtu0-pruhsr-fw.elf", > + .txpru = "ti-pruss/am65x-sr2-txpru0-pruhsr-fw.elf", > + }, > + { > + .pru = "ti-pruss/am65x-sr2-pru1-pruhsr-fw.elf", > + .rtu = "ti-pruss/am65x-sr2-rtu1-pruhsr-fw.elf", > + .txpru = "ti-pruss/am65x-sr2-txpru1-pruhsr-fw.elf", > + } > +}; > + > static struct icssg_firmwares icssg_switch_firmwares[] = { > { > .pru = "ti-pruss/am65x-sr2-pru0-prusw-fw.elf", > @@ -152,6 +168,8 @@ static int prueth_emac_start(struct prueth *prueth, struct prueth_emac *emac) > > if (prueth->is_switch_mode) > firmwares = icssg_switch_firmwares; > + else if (prueth->is_hsr_offload_mode) > + firmwares = icssg_hsr_firmwares; > else > firmwares = icssg_emac_firmwares; > > @@ -726,6 +744,19 @@ static void emac_ndo_set_rx_mode(struct net_device *ndev) > queue_work(emac->cmd_wq, &emac->rx_mode_work); > } > > +static int emac_ndo_set_features(struct net_device *ndev, > + netdev_features_t features) > +{ > + netdev_features_t hsr_feature_present = ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; > + netdev_features_t hsr_feature_wanted = features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; > + bool hsr_change_request = ((hsr_feature_wanted ^ hsr_feature_present) != 0); This is quite hard to read for me. why not just do this instead? netdev_features_t changed = netdev->features ^ feattures; Then check and ack on individual features that you want to act upon. if (changed & NETIF_F_HW_HSR_FWD) { if (features & NETIF_F_HW_HSR_FWD) /* enable HSR FWD feature */ else /* disable HSR FWD feature */ } if (changed) { ndev->features = features; return 1; } From include/linux/netdevice.h * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); * Called to update device configuration to new features. Passed * feature set might be less than what was returned by ndo_fix_features()). * Must return >0 or -errno if it changed dev->features itself. Can you please check that if we are not in dual emac mode then we should error out if any HSR feature is requested to be set. > + > + if (hsr_change_request) > + ndev->features = features; > + > + return 0; You may also want to check out * netdev_features_t (*ndo_fix_features)(struct net_device *dev, * netdev_features_t features); * Adjusts the requested feature flags according to device-specific * constraints, and returns the resulting flags. Must not modify * the device state. As you mentioned there are some contstraints on what HSR features can be enabled individually. "2) Inorder to enable hsr-tag-ins-offload, hsr-dup-offload must also be enabled as these are tightly coupled in the firmware implementation." You could do this check there by setting/clearing both features in tandem if either one was set/cleared. > +} > + > static const struct net_device_ops emac_netdev_ops = { > .ndo_open = emac_ndo_open, > .ndo_stop = emac_ndo_stop, > @@ -737,6 +768,7 @@ static const struct net_device_ops emac_netdev_ops = { > .ndo_eth_ioctl = icssg_ndo_ioctl, > .ndo_get_stats64 = icssg_ndo_get_stats64, > .ndo_get_phys_port_name = icssg_ndo_get_phys_port_name, > + .ndo_set_features = emac_ndo_set_features, > }; > > static int prueth_netdev_init(struct prueth *prueth, > @@ -865,6 +897,7 @@ static int prueth_netdev_init(struct prueth *prueth, > ndev->ethtool_ops = &icssg_ethtool_ops; > ndev->hw_features = NETIF_F_SG; > ndev->features = ndev->hw_features; > + ndev->hw_features |= NETIF_F_HW_HSR_FWD; > > netif_napi_add(ndev, &emac->napi_rx, icssg_napi_rx_poll); > hrtimer_init(&emac->rx_hrtimer, CLOCK_MONOTONIC, > @@ -953,7 +986,7 @@ static void prueth_emac_restart(struct prueth *prueth) > netif_device_attach(emac1->ndev); > } > > -static void icssg_enable_switch_mode(struct prueth *prueth) > +static void icssg_change_mode(struct prueth *prueth) > { > struct prueth_emac *emac; > int mac; > @@ -973,8 +1006,12 @@ static void icssg_enable_switch_mode(struct prueth *prueth) > BIT(emac->port_id) | DEFAULT_PORT_MASK, > BIT(emac->port_id) | DEFAULT_UNTAG_MASK, > true); > + if (prueth->is_hsr_offload_mode) > + icssg_vtbl_modify(emac, DEFAULT_VID, DEFAULT_PORT_MASK, > + DEFAULT_UNTAG_MASK, true); > icssg_set_pvid(prueth, emac->port_vlan, emac->port_id); > - icssg_set_port_state(emac, ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE); > + if (prueth->is_switch_mode) > + icssg_set_port_state(emac, ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE); > } > } > } > @@ -1012,7 +1049,7 @@ static int prueth_netdevice_port_link(struct net_device *ndev, > prueth->is_switch_mode = true; > prueth->default_vlan = 1; > emac->port_vlan = prueth->default_vlan; > - icssg_enable_switch_mode(prueth); > + icssg_change_mode(prueth); > } > } > > @@ -1040,6 +1077,59 @@ static void prueth_netdevice_port_unlink(struct net_device *ndev) > prueth->hw_bridge_dev = NULL; > } > > +static int prueth_hsr_port_link(struct net_device *ndev) > +{ > + struct prueth_emac *emac = netdev_priv(ndev); > + struct prueth *prueth = emac->prueth; > + struct prueth_emac *emac0; > + struct prueth_emac *emac1; > + > + emac0 = prueth->emac[PRUETH_MAC0]; > + emac1 = prueth->emac[PRUETH_MAC1]; > + > + if (prueth->is_switch_mode) > + return -EOPNOTSUPP; > + > + prueth->hsr_members |= BIT(emac->port_id); > + if (!prueth->is_switch_mode && !prueth->is_hsr_offload_mode) { you already checked that is_switch_mode is not set earlier. No need to check again. > + if (prueth->hsr_members & BIT(PRUETH_PORT_MII0) && > + prueth->hsr_members & BIT(PRUETH_PORT_MII1)) { > + if (!(emac0->ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) && > + !(emac1->ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES)) > + return -EOPNOTSUPP; > + prueth->is_hsr_offload_mode = true; > + prueth->default_vlan = 1; > + emac0->port_vlan = prueth->default_vlan; > + emac1->port_vlan = prueth->default_vlan; > + icssg_change_mode(prueth); > + dev_dbg(prueth->dev, "Enabling HSR offload mode\n"); > + } > + } > + > + return 0; > +} > + > +static void prueth_hsr_port_unlink(struct net_device *ndev) > +{ > + struct prueth_emac *emac = netdev_priv(ndev); > + struct prueth *prueth = emac->prueth; > + struct prueth_emac *emac0; > + struct prueth_emac *emac1; > + > + emac0 = prueth->emac[PRUETH_MAC0]; > + emac1 = prueth->emac[PRUETH_MAC1]; > + > + prueth->hsr_members &= ~BIT(emac->port_id); > + if (prueth->is_hsr_offload_mode) { > + prueth->is_hsr_offload_mode = false; > + emac0->port_vlan = 0; > + emac1->port_vlan = 0; > + prueth->hsr_dev = NULL; > + prueth_emac_restart(prueth); > + dev_dbg(prueth->dev, "Enabling Dual EMAC mode\n"); > + } > +} > + > /* netdev notifier */ > static int prueth_netdevice_event(struct notifier_block *unused, > unsigned long event, void *ptr) > @@ -1047,6 +1137,8 @@ static int prueth_netdevice_event(struct notifier_block *unused, > struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr); > struct net_device *ndev = netdev_notifier_info_to_dev(ptr); > struct netdev_notifier_changeupper_info *info; > + struct prueth_emac *emac = netdev_priv(ndev); > + struct prueth *prueth = emac->prueth; > int ret = NOTIFY_DONE; > > if (ndev->netdev_ops != &emac_netdev_ops) > @@ -1056,6 +1148,25 @@ static int prueth_netdevice_event(struct notifier_block *unused, > case NETDEV_CHANGEUPPER: > info = ptr; > > + if ((ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) && > + is_hsr_master(info->upper_dev)) { > + if (info->linking) { > + if (!prueth->hsr_dev) { > + prueth->hsr_dev = info->upper_dev; > + icssg_class_set_host_mac_addr(prueth->miig_rt, > + prueth->hsr_dev->dev_addr); > + } else { > + if (prueth->hsr_dev != info->upper_dev) { > + dev_dbg(prueth->dev, "Both interfaces must be linked to same upper device\n"); > + return -EOPNOTSUPP; > + } > + } > + prueth_hsr_port_link(ndev); > + } else { > + prueth_hsr_port_unlink(ndev); > + } > + } > + > if (netif_is_bridge_master(info->upper_dev)) { > if (info->linking) > ret = prueth_netdevice_port_link(ndev, info->upper_dev, extack); > diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h > index 786bd1ba34ab..a4b025fae797 100644 > --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h > +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h > @@ -243,11 +243,14 @@ struct icssg_firmwares { > * @iep1: pointer to IEP1 device > * @vlan_tbl: VLAN-FID table pointer > * @hw_bridge_dev: pointer to HW bridge net device > + * @hsr_dev: pointer to the HSR net device > * @br_members: bitmask of bridge member ports > + * @hsr_members: bitmask of hsr member ports > * @prueth_netdevice_nb: netdevice notifier block > * @prueth_switchdev_nb: switchdev notifier block > * @prueth_switchdev_bl_nb: switchdev blocking notifier block > * @is_switch_mode: flag to indicate if device is in Switch mode > + * @is_hsr_offload_mode: flag to indicate if device is in hsr offload mode > * @is_switchmode_supported: indicates platform support for switch mode > * @switch_id: ID for mapping switch ports to bridge > * @default_vlan: Default VLAN for host > @@ -279,11 +282,14 @@ struct prueth { > struct prueth_vlan_tbl *vlan_tbl; > > struct net_device *hw_bridge_dev; > + struct net_device *hsr_dev; > u8 br_members; > + u8 hsr_members; > struct notifier_block prueth_netdevice_nb; > struct notifier_block prueth_switchdev_nb; > struct notifier_block prueth_switchdev_bl_nb; > bool is_switch_mode; > + bool is_hsr_offload_mode; > bool is_switchmode_supported; > unsigned char switch_id[MAX_PHYS_ITEM_ID_LEN]; > int default_vlan;
On Fri, Aug 30, 2024 at 04:27:34PM +0300, Roger Quadros wrote: > > > On 28/08/2024 12:18, MD Danish Anwar wrote: > > Add support for offloading HSR port-to-port frame forward to hardware. > > When the slave interfaces are added to the HSR interface, the PRU cores > > will be stopped and ICSSG HSR firmwares will be loaded to them. > > > > Similarly, when HSR interface is deleted, the PRU cores will be stopped > > and dual EMAC firmware will be loaded to them. > > And what happens if we first started with switch mode and then switched to HSR mode? > Is this case possible and if yes should it revert to the last used mode > instead of forcing to dual EMAC mode? > > > > > This commit also renames some APIs that are common between switch and > > hsr mode with '_fw_offload' suffix. > > > > Signed-off-by: MD Danish Anwar <danishanwar@ti.com> > > --- > > .../net/ethernet/ti/icssg/icssg_classifier.c | 1 + > > drivers/net/ethernet/ti/icssg/icssg_config.c | 18 +-- > > drivers/net/ethernet/ti/icssg/icssg_prueth.c | 117 +++++++++++++++++- > > drivers/net/ethernet/ti/icssg/icssg_prueth.h | 6 + > > 4 files changed, 130 insertions(+), 12 deletions(-) > > > > diff --git a/drivers/net/ethernet/ti/icssg/icssg_classifier.c b/drivers/net/ethernet/ti/icssg/icssg_classifier.c > > index 9ec504d976d6..833ca86d0b71 100644 > > --- a/drivers/net/ethernet/ti/icssg/icssg_classifier.c > > +++ b/drivers/net/ethernet/ti/icssg/icssg_classifier.c > > @@ -290,6 +290,7 @@ void icssg_class_set_host_mac_addr(struct regmap *miig_rt, const u8 *mac) > > mac[2] << 16 | mac[3] << 24)); > > regmap_write(miig_rt, MAC_INTERFACE_1, (u32)(mac[4] | mac[5] << 8)); > > } > > +EXPORT_SYMBOL_GPL(icssg_class_set_host_mac_addr); > > > > void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac) > > { > > diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.c b/drivers/net/ethernet/ti/icssg/icssg_config.c > > index dae52a83a378..7b2e6c192ff3 100644 > > --- a/drivers/net/ethernet/ti/icssg/icssg_config.c > > +++ b/drivers/net/ethernet/ti/icssg/icssg_config.c > > @@ -107,7 +107,7 @@ static const struct map hwq_map[2][ICSSG_NUM_OTHER_QUEUES] = { > > }, > > }; > > > > -static void icssg_config_mii_init_switch(struct prueth_emac *emac) > > +static void icssg_config_mii_init_fw_offload(struct prueth_emac *emac) > > { > > struct prueth *prueth = emac->prueth; > > int mii = prueth_emac_slice(emac); > > @@ -278,7 +278,7 @@ static int emac_r30_is_done(struct prueth_emac *emac) > > return 1; > > } > > > > -static int prueth_switch_buffer_setup(struct prueth_emac *emac) > > +static int prueth_fw_offload_buffer_setup(struct prueth_emac *emac) > > { > > struct icssg_buffer_pool_cfg __iomem *bpool_cfg; > > struct icssg_rxq_ctx __iomem *rxq_ctx; > > @@ -424,7 +424,7 @@ static void icssg_init_emac_mode(struct prueth *prueth) > > icssg_class_set_host_mac_addr(prueth->miig_rt, mac); > > } > > > > -static void icssg_init_switch_mode(struct prueth *prueth) > > +static void icssg_init_fw_offload_mode(struct prueth *prueth) > > { > > u32 addr = prueth->shram.pa + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET; > > int i; > > @@ -455,8 +455,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) > > struct icssg_flow_cfg __iomem *flow_cfg; > > int ret; > > > > - if (prueth->is_switch_mode) > > - icssg_init_switch_mode(prueth); > > + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) > > + icssg_init_fw_offload_mode(prueth); > > else > > icssg_init_emac_mode(prueth); > > > > @@ -472,8 +472,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) > > regmap_update_bits(prueth->miig_rt, ICSSG_CFG_OFFSET, > > ICSSG_CFG_DEFAULT, ICSSG_CFG_DEFAULT); > > icssg_miig_set_interface_mode(prueth->miig_rt, slice, emac->phy_if); > > - if (prueth->is_switch_mode) > > - icssg_config_mii_init_switch(emac); > > + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) > > + icssg_config_mii_init_fw_offload(emac); > > else > > icssg_config_mii_init(emac); > > icssg_config_ipg(emac); > > @@ -498,8 +498,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) > > writeb(0, config + SPL_PKT_DEFAULT_PRIORITY); > > writeb(0, config + QUEUE_NUM_UNTAGGED); > > > > - if (prueth->is_switch_mode) > > - ret = prueth_switch_buffer_setup(emac); > > + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) > > + ret = prueth_fw_offload_buffer_setup(emac); > > else > > ret = prueth_emac_buffer_setup(emac); > > if (ret) > > diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c > > index 641e54849762..f4fd346fe6f5 100644 > > --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c > > +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c > > @@ -13,6 +13,7 @@ > > #include <linux/dma/ti-cppi5.h> > > #include <linux/etherdevice.h> > > #include <linux/genalloc.h> > > +#include <linux/if_hsr.h> > > #include <linux/if_vlan.h> > > #include <linux/interrupt.h> > > #include <linux/kernel.h> > > @@ -40,6 +41,8 @@ > > #define DEFAULT_PORT_MASK 1 > > #define DEFAULT_UNTAG_MASK 1 > > > > +#define NETIF_PRUETH_HSR_OFFLOAD_FEATURES NETIF_F_HW_HSR_FWD > > + > > /* CTRLMMR_ICSSG_RGMII_CTRL register bits */ > > #define ICSSG_CTRL_RGMII_ID_MODE BIT(24) > > > > @@ -118,6 +121,19 @@ static irqreturn_t prueth_tx_ts_irq(int irq, void *dev_id) > > return IRQ_HANDLED; > > } > > > > +static struct icssg_firmwares icssg_hsr_firmwares[] = { > > + { > > + .pru = "ti-pruss/am65x-sr2-pru0-pruhsr-fw.elf", > > + .rtu = "ti-pruss/am65x-sr2-rtu0-pruhsr-fw.elf", > > + .txpru = "ti-pruss/am65x-sr2-txpru0-pruhsr-fw.elf", > > + }, > > + { > > + .pru = "ti-pruss/am65x-sr2-pru1-pruhsr-fw.elf", > > + .rtu = "ti-pruss/am65x-sr2-rtu1-pruhsr-fw.elf", > > + .txpru = "ti-pruss/am65x-sr2-txpru1-pruhsr-fw.elf", > > + } > > +}; > > + > > static struct icssg_firmwares icssg_switch_firmwares[] = { > > { > > .pru = "ti-pruss/am65x-sr2-pru0-prusw-fw.elf", > > @@ -152,6 +168,8 @@ static int prueth_emac_start(struct prueth *prueth, struct prueth_emac *emac) > > > > if (prueth->is_switch_mode) > > firmwares = icssg_switch_firmwares; > > + else if (prueth->is_hsr_offload_mode) > > + firmwares = icssg_hsr_firmwares; > > else > > firmwares = icssg_emac_firmwares; > > > > @@ -726,6 +744,19 @@ static void emac_ndo_set_rx_mode(struct net_device *ndev) > > queue_work(emac->cmd_wq, &emac->rx_mode_work); > > } > > > > +static int emac_ndo_set_features(struct net_device *ndev, > > + netdev_features_t features) > > +{ > > + netdev_features_t hsr_feature_present = ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; > > + netdev_features_t hsr_feature_wanted = features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; > > + bool hsr_change_request = ((hsr_feature_wanted ^ hsr_feature_present) != 0); > > This is quite hard to read for me. > why not just do this instead? > > netdev_features_t changed = netdev->features ^ feattures; > > Then check and ack on individual features that you want to act upon. > > if (changed & NETIF_F_HW_HSR_FWD) { > if (features & NETIF_F_HW_HSR_FWD) > /* enable HSR FWD feature */ > else > /* disable HSR FWD feature */ > } > > if (changed) { > ndev->features = features; > return 1; > } > > >From include/linux/netdevice.h > > * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); > * Called to update device configuration to new features. Passed > * feature set might be less than what was returned by ndo_fix_features()). > * Must return >0 or -errno if it changed dev->features itself. > > Can you please check that if we are not in dual emac mode then we should > error out if any HSR feature is requested to be set. This is where all the shenanigans with firmware makes things complex. One of these options say 'If the interface is used for HSR, offload it to hardware if possible'. You should be able to set this flag anytime. It only has any effect when an interface is put into HSR mode, or if it is already in HSR mode. Hence, the firmware running right now should not matter. I suspect the same is true for many of these flags. > As you mentioned there are some contstraints on what HSR features can be > enabled individually. > "2) Inorder to enable hsr-tag-ins-offload, hsr-dup-offload > must also be enabled as these are tightly coupled in > the firmware implementation." > You could do this check there by setting/clearing both features in tandem > if either one was set/cleared. Software HSR should always work. Offloading is generally thought as accelerating this, if the hardware supports the current configuration. When offloading, if the hardware cannot support the current configuration, in general it should return -EOPNOTSUPP, and the software will keep doing the work. It is not particularly friendly, more of a documentation issue, but the user needs to set the options the correct way for offload to work. Otherwise it keeps chugging along in software. I would not expect to see any error messages when offload is not possible. Andrew
From: Md Danish Anwar <danishanwar@ti.com> Date: Wed, 28 Aug 2024 14:48:58 +0530 > Add support for offloading HSR port-to-port frame forward to hardware. > When the slave interfaces are added to the HSR interface, the PRU cores > will be stopped and ICSSG HSR firmwares will be loaded to them. > > Similarly, when HSR interface is deleted, the PRU cores will be stopped > and dual EMAC firmware will be loaded to them. > > This commit also renames some APIs that are common between switch and > hsr mode with '_fw_offload' suffix. [...] > @@ -726,6 +744,19 @@ static void emac_ndo_set_rx_mode(struct net_device *ndev) > queue_work(emac->cmd_wq, &emac->rx_mode_work); > } > > +static int emac_ndo_set_features(struct net_device *ndev, > + netdev_features_t features) > +{ > + netdev_features_t hsr_feature_present = ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; Maybe you could give this definition and/or this variable shorter names, so that you won't cross 80 cols? > + netdev_features_t hsr_feature_wanted = features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; (same) > + bool hsr_change_request = ((hsr_feature_wanted ^ hsr_feature_present) != 0); You don't need to compare with zero. Just = a ^ b. Type `bool` takes care of this. > + > + if (hsr_change_request) > + ndev->features = features; Does it mean you reject any feature change except HSR? > + > + return 0; > +} > + > static const struct net_device_ops emac_netdev_ops = { > .ndo_open = emac_ndo_open, > .ndo_stop = emac_ndo_stop, > @@ -737,6 +768,7 @@ static const struct net_device_ops emac_netdev_ops = { > .ndo_eth_ioctl = icssg_ndo_ioctl, > .ndo_get_stats64 = icssg_ndo_get_stats64, > .ndo_get_phys_port_name = icssg_ndo_get_phys_port_name, > + .ndo_set_features = emac_ndo_set_features, > }; > > static int prueth_netdev_init(struct prueth *prueth, > @@ -865,6 +897,7 @@ static int prueth_netdev_init(struct prueth *prueth, > ndev->ethtool_ops = &icssg_ethtool_ops; > ndev->hw_features = NETIF_F_SG; > ndev->features = ndev->hw_features; > + ndev->hw_features |= NETIF_F_HW_HSR_FWD; Why not HSR_OFFLOAD right away, so that you wouldn't need to replace this line with the mentioned def a commit later? > > netif_napi_add(ndev, &emac->napi_rx, icssg_napi_rx_poll); > hrtimer_init(&emac->rx_hrtimer, CLOCK_MONOTONIC, [...] > + prueth->hsr_members |= BIT(emac->port_id); > + if (!prueth->is_switch_mode && !prueth->is_hsr_offload_mode) { > + if (prueth->hsr_members & BIT(PRUETH_PORT_MII0) && > + prueth->hsr_members & BIT(PRUETH_PORT_MII1)) { > + if (!(emac0->ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) && > + !(emac1->ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES)) > + return -EOPNOTSUPP; > + prueth->is_hsr_offload_mode = true; > + prueth->default_vlan = 1; > + emac0->port_vlan = prueth->default_vlan; > + emac1->port_vlan = prueth->default_vlan; > + icssg_change_mode(prueth); > + dev_dbg(prueth->dev, "Enabling HSR offload mode\n"); netdev_dbg()? > + } > + } > + > + return 0; > +} > + > +static void prueth_hsr_port_unlink(struct net_device *ndev) > +{ > + struct prueth_emac *emac = netdev_priv(ndev); > + struct prueth *prueth = emac->prueth; > + struct prueth_emac *emac0; > + struct prueth_emac *emac1; > + > + emac0 = prueth->emac[PRUETH_MAC0]; > + emac1 = prueth->emac[PRUETH_MAC1]; > + > + prueth->hsr_members &= ~BIT(emac->port_id); > + if (prueth->is_hsr_offload_mode) { > + prueth->is_hsr_offload_mode = false; > + emac0->port_vlan = 0; > + emac1->port_vlan = 0; > + prueth->hsr_dev = NULL; > + prueth_emac_restart(prueth); > + dev_dbg(prueth->dev, "Enabling Dual EMAC mode\n"); (same here and in all the places below) > + } > +} Thanks, Olek
Hi Roger, On 8/30/2024 6:57 PM, Roger Quadros wrote: > > > On 28/08/2024 12:18, MD Danish Anwar wrote: >> Add support for offloading HSR port-to-port frame forward to hardware. >> When the slave interfaces are added to the HSR interface, the PRU cores >> will be stopped and ICSSG HSR firmwares will be loaded to them. >> >> Similarly, when HSR interface is deleted, the PRU cores will be stopped >> and dual EMAC firmware will be loaded to them. > > And what happens if we first started with switch mode and then switched to HSR mode? > Is this case possible and if yes should it revert to the last used mode > instead of forcing to dual EMAC mode? > That is not supported by the firmware. In prueth_hsr_port_link() + if (prueth->is_switch_mode) + return -EOPNOTSUPP; We will not change the prueth->mode or the firmware settings, driver will return -EOPNOTSUPP and the offloading will happen in software as suggested by Andrew L in v2 [1] . HW offloading is only supported from dual EMAC mode to HSR. Perhaps the commit message here is misleading, I will update the commit message. >> >> This commit also renames some APIs that are common between switch and >> hsr mode with '_fw_offload' suffix. >> >> Signed-off-by: MD Danish Anwar <danishanwar@ti.com> >> --- >> .../net/ethernet/ti/icssg/icssg_classifier.c | 1 + >> drivers/net/ethernet/ti/icssg/icssg_config.c | 18 +-- >> drivers/net/ethernet/ti/icssg/icssg_prueth.c | 117 +++++++++++++++++- >> drivers/net/ethernet/ti/icssg/icssg_prueth.h | 6 + >> 4 files changed, 130 insertions(+), 12 deletions(-) >> >> diff --git a/drivers/net/ethernet/ti/icssg/icssg_classifier.c b/drivers/net/ethernet/ti/icssg/icssg_classifier.c >> index 9ec504d976d6..833ca86d0b71 100644 >> --- a/drivers/net/ethernet/ti/icssg/icssg_classifier.c >> +++ b/drivers/net/ethernet/ti/icssg/icssg_classifier.c >> @@ -290,6 +290,7 @@ void icssg_class_set_host_mac_addr(struct regmap *miig_rt, const u8 *mac) >> mac[2] << 16 | mac[3] << 24)); >> regmap_write(miig_rt, MAC_INTERFACE_1, (u32)(mac[4] | mac[5] << 8)); >> } >> +EXPORT_SYMBOL_GPL(icssg_class_set_host_mac_addr); >> >> void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac) >> { >> diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.c b/drivers/net/ethernet/ti/icssg/icssg_config.c >> index dae52a83a378..7b2e6c192ff3 100644 >> --- a/drivers/net/ethernet/ti/icssg/icssg_config.c >> +++ b/drivers/net/ethernet/ti/icssg/icssg_config.c >> @@ -107,7 +107,7 @@ static const struct map hwq_map[2][ICSSG_NUM_OTHER_QUEUES] = { >> }, >> }; >> >> -static void icssg_config_mii_init_switch(struct prueth_emac *emac) >> +static void icssg_config_mii_init_fw_offload(struct prueth_emac *emac) >> { >> struct prueth *prueth = emac->prueth; >> int mii = prueth_emac_slice(emac); >> @@ -278,7 +278,7 @@ static int emac_r30_is_done(struct prueth_emac *emac) >> return 1; >> } >> >> -static int prueth_switch_buffer_setup(struct prueth_emac *emac) >> +static int prueth_fw_offload_buffer_setup(struct prueth_emac *emac) >> { >> struct icssg_buffer_pool_cfg __iomem *bpool_cfg; >> struct icssg_rxq_ctx __iomem *rxq_ctx; >> @@ -424,7 +424,7 @@ static void icssg_init_emac_mode(struct prueth *prueth) >> icssg_class_set_host_mac_addr(prueth->miig_rt, mac); >> } >> >> -static void icssg_init_switch_mode(struct prueth *prueth) >> +static void icssg_init_fw_offload_mode(struct prueth *prueth) >> { >> u32 addr = prueth->shram.pa + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET; >> int i; >> @@ -455,8 +455,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) >> struct icssg_flow_cfg __iomem *flow_cfg; >> int ret; >> >> - if (prueth->is_switch_mode) >> - icssg_init_switch_mode(prueth); >> + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) >> + icssg_init_fw_offload_mode(prueth); >> else >> icssg_init_emac_mode(prueth); >> >> @@ -472,8 +472,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) >> regmap_update_bits(prueth->miig_rt, ICSSG_CFG_OFFSET, >> ICSSG_CFG_DEFAULT, ICSSG_CFG_DEFAULT); >> icssg_miig_set_interface_mode(prueth->miig_rt, slice, emac->phy_if); >> - if (prueth->is_switch_mode) >> - icssg_config_mii_init_switch(emac); >> + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) >> + icssg_config_mii_init_fw_offload(emac); >> else >> icssg_config_mii_init(emac); >> icssg_config_ipg(emac); >> @@ -498,8 +498,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) >> writeb(0, config + SPL_PKT_DEFAULT_PRIORITY); >> writeb(0, config + QUEUE_NUM_UNTAGGED); >> >> - if (prueth->is_switch_mode) >> - ret = prueth_switch_buffer_setup(emac); >> + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) >> + ret = prueth_fw_offload_buffer_setup(emac); >> else >> ret = prueth_emac_buffer_setup(emac); >> if (ret) >> diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c >> index 641e54849762..f4fd346fe6f5 100644 >> --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c >> +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c >> @@ -13,6 +13,7 @@ >> #include <linux/dma/ti-cppi5.h> >> #include <linux/etherdevice.h> >> #include <linux/genalloc.h> >> +#include <linux/if_hsr.h> >> #include <linux/if_vlan.h> >> #include <linux/interrupt.h> >> #include <linux/kernel.h> >> @@ -40,6 +41,8 @@ >> #define DEFAULT_PORT_MASK 1 >> #define DEFAULT_UNTAG_MASK 1 >> >> +#define NETIF_PRUETH_HSR_OFFLOAD_FEATURES NETIF_F_HW_HSR_FWD >> + >> /* CTRLMMR_ICSSG_RGMII_CTRL register bits */ >> #define ICSSG_CTRL_RGMII_ID_MODE BIT(24) >> >> @@ -118,6 +121,19 @@ static irqreturn_t prueth_tx_ts_irq(int irq, void *dev_id) >> return IRQ_HANDLED; >> } >> >> +static struct icssg_firmwares icssg_hsr_firmwares[] = { >> + { >> + .pru = "ti-pruss/am65x-sr2-pru0-pruhsr-fw.elf", >> + .rtu = "ti-pruss/am65x-sr2-rtu0-pruhsr-fw.elf", >> + .txpru = "ti-pruss/am65x-sr2-txpru0-pruhsr-fw.elf", >> + }, >> + { >> + .pru = "ti-pruss/am65x-sr2-pru1-pruhsr-fw.elf", >> + .rtu = "ti-pruss/am65x-sr2-rtu1-pruhsr-fw.elf", >> + .txpru = "ti-pruss/am65x-sr2-txpru1-pruhsr-fw.elf", >> + } >> +}; >> + >> static struct icssg_firmwares icssg_switch_firmwares[] = { >> { >> .pru = "ti-pruss/am65x-sr2-pru0-prusw-fw.elf", >> @@ -152,6 +168,8 @@ static int prueth_emac_start(struct prueth *prueth, struct prueth_emac *emac) >> >> if (prueth->is_switch_mode) >> firmwares = icssg_switch_firmwares; >> + else if (prueth->is_hsr_offload_mode) >> + firmwares = icssg_hsr_firmwares; >> else >> firmwares = icssg_emac_firmwares; >> >> @@ -726,6 +744,19 @@ static void emac_ndo_set_rx_mode(struct net_device *ndev) >> queue_work(emac->cmd_wq, &emac->rx_mode_work); >> } >> >> +static int emac_ndo_set_features(struct net_device *ndev, >> + netdev_features_t features) >> +{ >> + netdev_features_t hsr_feature_present = ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; >> + netdev_features_t hsr_feature_wanted = features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; >> + bool hsr_change_request = ((hsr_feature_wanted ^ hsr_feature_present) != 0); > > This is quite hard to read for me. > why not just do this instead? > > netdev_features_t changed = netdev->features ^ feattures; > > Then check and ack on individual features that you want to act upon. > Sure Roger, I will modfiy this function and implement it as you have suggested below. > if (changed & NETIF_F_HW_HSR_FWD) { > if (features & NETIF_F_HW_HSR_FWD) > /* enable HSR FWD feature */ > else > /* disable HSR FWD feature */ > } > Roger, there is no action needed here. In this function we should just set / unset features related to HSR in ndev->features. We don't need to do any action in if / else. Based on which HSR features are set / unset, the different APIs will perform different actions. Perhaps we can do something like below, if (changed & NETIF_F_HW_HSR_FWD) if (features & NETIF_F_HW_HSR_FWD) ndev->features |= NETIF_F_HW_HSR_FWD; else ndev->features &= ~NETIF_F_HW_HSR_FWD; We can do this for all HSR related features. This will also elimnate below if check and we can just `return changed`. > if (changed) { > ndev->features = features; > return 1; > } > > From include/linux/netdevice.h > > * int (*ndo_set_features)(struct net_device *dev, netdev_features_t features); > * Called to update device configuration to new features. Passed > * feature set might be less than what was returned by ndo_fix_features()). > * Must return >0 or -errno if it changed dev->features itself. > > Can you please check that if we are not in dual emac mode then we should > error out if any HSR feature is requested to be set. > Yes, the ndev->features should only be changed when we are in dual EMAC mode / HSR offload mode. If we are in swicth mode these features shouldn't be changed as hardware offloading is not supported in switch mode. >> + >> + if (hsr_change_request) >> + ndev->features = features; >> + >> + return 0; > > > You may also want to check out > > * netdev_features_t (*ndo_fix_features)(struct net_device *dev, > * netdev_features_t features); > * Adjusts the requested feature flags according to device-specific > * constraints, and returns the resulting flags. Must not modify > * the device state. > > As you mentioned there are some contstraints on what HSR features can be > enabled individually. > "2) Inorder to enable hsr-tag-ins-offload, hsr-dup-offload > must also be enabled as these are tightly coupled in > the firmware implementation." > You could do this check there by setting/clearing both features in tandem > if either one was set/cleared. > Sure I will look into that. >> +} >> + >> static const struct net_device_ops emac_netdev_ops = { >> .ndo_open = emac_ndo_open, >> .ndo_stop = emac_ndo_stop, >> @@ -737,6 +768,7 @@ static const struct net_device_ops emac_netdev_ops = { >> .ndo_eth_ioctl = icssg_ndo_ioctl, >> .ndo_get_stats64 = icssg_ndo_get_stats64, >> .ndo_get_phys_port_name = icssg_ndo_get_phys_port_name, >> + .ndo_set_features = emac_ndo_set_features, >> }; >> >> static int prueth_netdev_init(struct prueth *prueth, >> @@ -865,6 +897,7 @@ static int prueth_netdev_init(struct prueth *prueth, >> ndev->ethtool_ops = &icssg_ethtool_ops; >> ndev->hw_features = NETIF_F_SG; >> ndev->features = ndev->hw_features; >> + ndev->hw_features |= NETIF_F_HW_HSR_FWD; >> >> netif_napi_add(ndev, &emac->napi_rx, icssg_napi_rx_poll); >> hrtimer_init(&emac->rx_hrtimer, CLOCK_MONOTONIC, >> @@ -953,7 +986,7 @@ static void prueth_emac_restart(struct prueth *prueth) >> netif_device_attach(emac1->ndev); >> } >> >> -static void icssg_enable_switch_mode(struct prueth *prueth) >> +static void icssg_change_mode(struct prueth *prueth) >> { >> struct prueth_emac *emac; >> int mac; >> @@ -973,8 +1006,12 @@ static void icssg_enable_switch_mode(struct prueth *prueth) >> BIT(emac->port_id) | DEFAULT_PORT_MASK, >> BIT(emac->port_id) | DEFAULT_UNTAG_MASK, >> true); >> + if (prueth->is_hsr_offload_mode) >> + icssg_vtbl_modify(emac, DEFAULT_VID, DEFAULT_PORT_MASK, >> + DEFAULT_UNTAG_MASK, true); >> icssg_set_pvid(prueth, emac->port_vlan, emac->port_id); >> - icssg_set_port_state(emac, ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE); >> + if (prueth->is_switch_mode) >> + icssg_set_port_state(emac, ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE); >> } >> } >> } >> @@ -1012,7 +1049,7 @@ static int prueth_netdevice_port_link(struct net_device *ndev, >> prueth->is_switch_mode = true; >> prueth->default_vlan = 1; >> emac->port_vlan = prueth->default_vlan; >> - icssg_enable_switch_mode(prueth); >> + icssg_change_mode(prueth); >> } >> } >> >> @@ -1040,6 +1077,59 @@ static void prueth_netdevice_port_unlink(struct net_device *ndev) >> prueth->hw_bridge_dev = NULL; >> } >> >> +static int prueth_hsr_port_link(struct net_device *ndev) >> +{ >> + struct prueth_emac *emac = netdev_priv(ndev); >> + struct prueth *prueth = emac->prueth; >> + struct prueth_emac *emac0; >> + struct prueth_emac *emac1; >> + >> + emac0 = prueth->emac[PRUETH_MAC0]; >> + emac1 = prueth->emac[PRUETH_MAC1]; >> + >> + if (prueth->is_switch_mode) >> + return -EOPNOTSUPP; >> + >> + prueth->hsr_members |= BIT(emac->port_id); >> + if (!prueth->is_switch_mode && !prueth->is_hsr_offload_mode) { > > you already checked that is_switch_mode is not set earlier. No need to check again. > Sure. Will remove this. >> + if (prueth->hsr_members & BIT(PRUETH_PORT_MII0) && >> + prueth->hsr_members & BIT(PRUETH_PORT_MII1)) { >> + if (!(emac0->ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) && >> + !(emac1->ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES)) >> + return -EOPNOTSUPP; >> + prueth->is_hsr_offload_mode = true; >> + prueth->default_vlan = 1; >> + emac0->port_vlan = prueth->default_vlan; >> + emac1->port_vlan = prueth->default_vlan; >> + icssg_change_mode(prueth); >> + dev_dbg(prueth->dev, "Enabling HSR offload mode\n"); >> + } >> + } >> + >> + return 0; >> +} >> + >> +static void prueth_hsr_port_unlink(struct net_device *ndev) >> +{ >> + struct prueth_emac *emac = netdev_priv(ndev); >> + struct prueth *prueth = emac->prueth; >> + struct prueth_emac *emac0; >> + struct prueth_emac *emac1; >> + >> + emac0 = prueth->emac[PRUETH_MAC0]; >> + emac1 = prueth->emac[PRUETH_MAC1]; >> + >> + prueth->hsr_members &= ~BIT(emac->port_id); >> + if (prueth->is_hsr_offload_mode) { >> + prueth->is_hsr_offload_mode = false; >> + emac0->port_vlan = 0; >> + emac1->port_vlan = 0; >> + prueth->hsr_dev = NULL; >> + prueth_emac_restart(prueth); >> + dev_dbg(prueth->dev, "Enabling Dual EMAC mode\n"); >> + } >> +} >> + [...] [1] https://lore.kernel.org/all/082f81fc-c9ad-40d7-8172-440765350b48@lunn.ch/
On 8/30/2024 7:30 PM, Andrew Lunn wrote: > On Fri, Aug 30, 2024 at 04:27:34PM +0300, Roger Quadros wrote: >> >> >> On 28/08/2024 12:18, MD Danish Anwar wrote: >>> Add support for offloading HSR port-to-port frame forward to hardware. >>> When the slave interfaces are added to the HSR interface, the PRU cores >>> will be stopped and ICSSG HSR firmwares will be loaded to them. >>> >>> Similarly, when HSR interface is deleted, the PRU cores will be stopped >>> and dual EMAC firmware will be loaded to them. >> >> And what happens if we first started with switch mode and then switched to HSR mode? >> Is this case possible and if yes should it revert to the last used mode >> instead of forcing to dual EMAC mode? >> >>> >>> This commit also renames some APIs that are common between switch and >>> hsr mode with '_fw_offload' suffix. >>> >>> Signed-off-by: MD Danish Anwar <danishanwar@ti.com> >>> --- [...] >> >> Can you please check that if we are not in dual emac mode then we should >> error out if any HSR feature is requested to be set. > > This is where all the shenanigans with firmware makes things complex. > > One of these options say 'If the interface is used for HSR, offload it > to hardware if possible'. You should be able to set this flag > anytime. It only has any effect when an interface is put into HSR > mode, or if it is already in HSR mode. Hence, the firmware running > right now should not matter. > > I suspect the same is true for many of these flags. > Andrew that is correct. Ideally the current running firmware should not matter. But the firmware team only recommends dual EMAC -> HSR offload and vise versa transitions. They suspect some configuration issues when switch -> HSR transition happen. That is why they have recommended not to do HSR hw offloading from switch mode. We can however keep doing SW offload as suggested by you in v2. >> As you mentioned there are some contstraints on what HSR features can be >> enabled individually. >> "2) Inorder to enable hsr-tag-ins-offload, hsr-dup-offload >> must also be enabled as these are tightly coupled in >> the firmware implementation." >> You could do this check there by setting/clearing both features in tandem >> if either one was set/cleared. > > Software HSR should always work. Offloading is generally thought as > accelerating this, if the hardware supports the current > configuration. When offloading, if the hardware cannot support the > current configuration, in general it should return -EOPNOTSUPP, and > the software will keep doing the work. > > It is not particularly friendly, more of a documentation issue, but > the user needs to set the options the correct way for offload to > work. Otherwise it keeps chugging along in software. I would not > expect to see any error messages when offload is not possible. > Yes, and I have already added this in this series based on your feedback on v2. I have one question though, in emac_ndo_set_features() should I change these HSR related features irrespective of the current mode? AFAIK, if NETIF_F_HW_HSR_FWD is set, the forwarding is offloaded to HW. If NETIF_F_HW_HSR_FWD is not set the forwarding is not offloaded to HW and is done in SW. So, I don't see any need to enable this features if we are currently in switch mode. Let me know what do you think. Should I still enable this feature irrespective of current mode and later handle this in prueth_hsr_port_link / unlink()? > Andrew
> Yes, and I have already added this in this series based on your feedback > on v2. > > I have one question though, in emac_ndo_set_features() should I change > these HSR related features irrespective of the current mode? > > AFAIK, if NETIF_F_HW_HSR_FWD is set, the forwarding is offloaded to HW. > If NETIF_F_HW_HSR_FWD is not set the forwarding is not offloaded to HW > and is done in SW. > > So, I don't see any need to enable this features if we are currently in > switch mode. Let me know what do you think. Should I still enable this > feature irrespective of current mode and later handle this in > prueth_hsr_port_link / unlink()? The user should not need to know about the different firmwares. So i would allow NETIF_F_HW_HSR_FWD at any time. The exception would be, if you look at all the other drivers which implement HSR offload, if they all return an error if the offloading cannot be enabled, then you should do the same. Andrew
On 02/09/24 6:32 pm, Andrew Lunn wrote: >> Yes, and I have already added this in this series based on your feedback >> on v2. >> >> I have one question though, in emac_ndo_set_features() should I change >> these HSR related features irrespective of the current mode? >> >> AFAIK, if NETIF_F_HW_HSR_FWD is set, the forwarding is offloaded to HW. >> If NETIF_F_HW_HSR_FWD is not set the forwarding is not offloaded to HW >> and is done in SW. >> >> So, I don't see any need to enable this features if we are currently in >> switch mode. Let me know what do you think. Should I still enable this >> feature irrespective of current mode and later handle this in >> prueth_hsr_port_link / unlink()? > > The user should not need to know about the different firmwares. So i > would allow NETIF_F_HW_HSR_FWD at any time. > > The exception would be, if you look at all the other drivers which > implement HSR offload, if they all return an error if the offloading > cannot be enabled, then you should do the same. > Andrew, I looked at xrs700x dsa and microchip ksz dsa driver as an example. The drivers return -EOPNOTSUPP whenever offloading is not possible in the xrs700x_hsr_join / ksz_hsr_join api. I think the same should be okay for ICSSG driver as well. ICSSG drivers equivalent API is prueth_hsr_port_link() where I will return -EOPNOTSUPP whenever offloading is not possible. So in the .ndo_set_features() I will not add any check so that the user wouldn't know about the current firmware and whether offloading is supported or not. In the prueth_hsr_port_link() based on firmware limitation we will error out. Andrew, Roger, Let me know if this sounds good. > Andrew
Hi Alexander On 30/08/24 7:37 pm, Alexander Lobakin wrote: > From: Md Danish Anwar <danishanwar@ti.com> > Date: Wed, 28 Aug 2024 14:48:58 +0530 > >> Add support for offloading HSR port-to-port frame forward to hardware. >> When the slave interfaces are added to the HSR interface, the PRU cores >> will be stopped and ICSSG HSR firmwares will be loaded to them. >> >> Similarly, when HSR interface is deleted, the PRU cores will be stopped >> and dual EMAC firmware will be loaded to them. >> >> This commit also renames some APIs that are common between switch and >> hsr mode with '_fw_offload' suffix. > > [...] > >> @@ -726,6 +744,19 @@ static void emac_ndo_set_rx_mode(struct net_device *ndev) >> queue_work(emac->cmd_wq, &emac->rx_mode_work); >> } >> >> +static int emac_ndo_set_features(struct net_device *ndev, >> + netdev_features_t features) >> +{ >> + netdev_features_t hsr_feature_present = ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; > > Maybe you could give this definition and/or this variable shorter names, > so that you won't cross 80 cols? > I will use Roger's feedback here [1] and modify this API. This will contain this line within 80 cols. I will try to containig line length within 80 cols wherever possible. There are however some instances where line length of 80 cols is not possible. There the line length will exceed. >> + netdev_features_t hsr_feature_wanted = features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; > > (same) > >> + bool hsr_change_request = ((hsr_feature_wanted ^ hsr_feature_present) != 0); > > You don't need to compare with zero. Just = a ^ b. Type `bool` takes > care of this. > Sure. >> + >> + if (hsr_change_request) >> + ndev->features = features; > > Does it mean you reject any feature change except HSR? > Currently only HSR features are supported. So we will modify ndev->features only for HSR features request. For any other feature request ndev->features will not be modified. >> + >> + return 0; >> +} >> + >> static const struct net_device_ops emac_netdev_ops = { >> .ndo_open = emac_ndo_open, >> .ndo_stop = emac_ndo_stop, >> @@ -737,6 +768,7 @@ static const struct net_device_ops emac_netdev_ops = { >> .ndo_eth_ioctl = icssg_ndo_ioctl, >> .ndo_get_stats64 = icssg_ndo_get_stats64, >> .ndo_get_phys_port_name = icssg_ndo_get_phys_port_name, >> + .ndo_set_features = emac_ndo_set_features, >> }; >> >> static int prueth_netdev_init(struct prueth *prueth, >> @@ -865,6 +897,7 @@ static int prueth_netdev_init(struct prueth *prueth, >> ndev->ethtool_ops = &icssg_ethtool_ops; >> ndev->hw_features = NETIF_F_SG; >> ndev->features = ndev->hw_features; >> + ndev->hw_features |= NETIF_F_HW_HSR_FWD; > > Why not HSR_OFFLOAD right away, so that you wouldn't need to replace > this line with the mentioned def a commit later? > Sure Will do that. >> >> netif_napi_add(ndev, &emac->napi_rx, icssg_napi_rx_poll); >> hrtimer_init(&emac->rx_hrtimer, CLOCK_MONOTONIC, > > [...] > >> + prueth->hsr_members |= BIT(emac->port_id); >> + if (!prueth->is_switch_mode && !prueth->is_hsr_offload_mode) { >> + if (prueth->hsr_members & BIT(PRUETH_PORT_MII0) && >> + prueth->hsr_members & BIT(PRUETH_PORT_MII1)) { >> + if (!(emac0->ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) && >> + !(emac1->ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES)) >> + return -EOPNOTSUPP; >> + prueth->is_hsr_offload_mode = true; >> + prueth->default_vlan = 1; >> + emac0->port_vlan = prueth->default_vlan; >> + emac1->port_vlan = prueth->default_vlan; >> + icssg_change_mode(prueth); >> + dev_dbg(prueth->dev, "Enabling HSR offload mode\n"); > > netdev_dbg()? > >> + } >> + } >> + >> + return 0; >> +} >> + >> +static void prueth_hsr_port_unlink(struct net_device *ndev) >> +{ >> + struct prueth_emac *emac = netdev_priv(ndev); >> + struct prueth *prueth = emac->prueth; >> + struct prueth_emac *emac0; >> + struct prueth_emac *emac1; >> + >> + emac0 = prueth->emac[PRUETH_MAC0]; >> + emac1 = prueth->emac[PRUETH_MAC1]; >> + >> + prueth->hsr_members &= ~BIT(emac->port_id); >> + if (prueth->is_hsr_offload_mode) { >> + prueth->is_hsr_offload_mode = false; >> + emac0->port_vlan = 0; >> + emac1->port_vlan = 0; >> + prueth->hsr_dev = NULL; >> + prueth_emac_restart(prueth); >> + dev_dbg(prueth->dev, "Enabling Dual EMAC mode\n"); > > (same here and in all the places below) > Sure will use netdev_dbg instead of dev_dbg. >> + } >> +} > > Thanks, > Olek [1] https://lore.kernel.org/all/22f5442b-62e6-42d0-8bf8-163d2c4ea4bd@kernel.org/
diff --git a/drivers/net/ethernet/ti/icssg/icssg_classifier.c b/drivers/net/ethernet/ti/icssg/icssg_classifier.c index 9ec504d976d6..833ca86d0b71 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_classifier.c +++ b/drivers/net/ethernet/ti/icssg/icssg_classifier.c @@ -290,6 +290,7 @@ void icssg_class_set_host_mac_addr(struct regmap *miig_rt, const u8 *mac) mac[2] << 16 | mac[3] << 24)); regmap_write(miig_rt, MAC_INTERFACE_1, (u32)(mac[4] | mac[5] << 8)); } +EXPORT_SYMBOL_GPL(icssg_class_set_host_mac_addr); void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac) { diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.c b/drivers/net/ethernet/ti/icssg/icssg_config.c index dae52a83a378..7b2e6c192ff3 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_config.c +++ b/drivers/net/ethernet/ti/icssg/icssg_config.c @@ -107,7 +107,7 @@ static const struct map hwq_map[2][ICSSG_NUM_OTHER_QUEUES] = { }, }; -static void icssg_config_mii_init_switch(struct prueth_emac *emac) +static void icssg_config_mii_init_fw_offload(struct prueth_emac *emac) { struct prueth *prueth = emac->prueth; int mii = prueth_emac_slice(emac); @@ -278,7 +278,7 @@ static int emac_r30_is_done(struct prueth_emac *emac) return 1; } -static int prueth_switch_buffer_setup(struct prueth_emac *emac) +static int prueth_fw_offload_buffer_setup(struct prueth_emac *emac) { struct icssg_buffer_pool_cfg __iomem *bpool_cfg; struct icssg_rxq_ctx __iomem *rxq_ctx; @@ -424,7 +424,7 @@ static void icssg_init_emac_mode(struct prueth *prueth) icssg_class_set_host_mac_addr(prueth->miig_rt, mac); } -static void icssg_init_switch_mode(struct prueth *prueth) +static void icssg_init_fw_offload_mode(struct prueth *prueth) { u32 addr = prueth->shram.pa + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET; int i; @@ -455,8 +455,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) struct icssg_flow_cfg __iomem *flow_cfg; int ret; - if (prueth->is_switch_mode) - icssg_init_switch_mode(prueth); + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) + icssg_init_fw_offload_mode(prueth); else icssg_init_emac_mode(prueth); @@ -472,8 +472,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) regmap_update_bits(prueth->miig_rt, ICSSG_CFG_OFFSET, ICSSG_CFG_DEFAULT, ICSSG_CFG_DEFAULT); icssg_miig_set_interface_mode(prueth->miig_rt, slice, emac->phy_if); - if (prueth->is_switch_mode) - icssg_config_mii_init_switch(emac); + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) + icssg_config_mii_init_fw_offload(emac); else icssg_config_mii_init(emac); icssg_config_ipg(emac); @@ -498,8 +498,8 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice) writeb(0, config + SPL_PKT_DEFAULT_PRIORITY); writeb(0, config + QUEUE_NUM_UNTAGGED); - if (prueth->is_switch_mode) - ret = prueth_switch_buffer_setup(emac); + if (prueth->is_switch_mode || prueth->is_hsr_offload_mode) + ret = prueth_fw_offload_buffer_setup(emac); else ret = prueth_emac_buffer_setup(emac); if (ret) diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c index 641e54849762..f4fd346fe6f5 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c @@ -13,6 +13,7 @@ #include <linux/dma/ti-cppi5.h> #include <linux/etherdevice.h> #include <linux/genalloc.h> +#include <linux/if_hsr.h> #include <linux/if_vlan.h> #include <linux/interrupt.h> #include <linux/kernel.h> @@ -40,6 +41,8 @@ #define DEFAULT_PORT_MASK 1 #define DEFAULT_UNTAG_MASK 1 +#define NETIF_PRUETH_HSR_OFFLOAD_FEATURES NETIF_F_HW_HSR_FWD + /* CTRLMMR_ICSSG_RGMII_CTRL register bits */ #define ICSSG_CTRL_RGMII_ID_MODE BIT(24) @@ -118,6 +121,19 @@ static irqreturn_t prueth_tx_ts_irq(int irq, void *dev_id) return IRQ_HANDLED; } +static struct icssg_firmwares icssg_hsr_firmwares[] = { + { + .pru = "ti-pruss/am65x-sr2-pru0-pruhsr-fw.elf", + .rtu = "ti-pruss/am65x-sr2-rtu0-pruhsr-fw.elf", + .txpru = "ti-pruss/am65x-sr2-txpru0-pruhsr-fw.elf", + }, + { + .pru = "ti-pruss/am65x-sr2-pru1-pruhsr-fw.elf", + .rtu = "ti-pruss/am65x-sr2-rtu1-pruhsr-fw.elf", + .txpru = "ti-pruss/am65x-sr2-txpru1-pruhsr-fw.elf", + } +}; + static struct icssg_firmwares icssg_switch_firmwares[] = { { .pru = "ti-pruss/am65x-sr2-pru0-prusw-fw.elf", @@ -152,6 +168,8 @@ static int prueth_emac_start(struct prueth *prueth, struct prueth_emac *emac) if (prueth->is_switch_mode) firmwares = icssg_switch_firmwares; + else if (prueth->is_hsr_offload_mode) + firmwares = icssg_hsr_firmwares; else firmwares = icssg_emac_firmwares; @@ -726,6 +744,19 @@ static void emac_ndo_set_rx_mode(struct net_device *ndev) queue_work(emac->cmd_wq, &emac->rx_mode_work); } +static int emac_ndo_set_features(struct net_device *ndev, + netdev_features_t features) +{ + netdev_features_t hsr_feature_present = ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; + netdev_features_t hsr_feature_wanted = features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES; + bool hsr_change_request = ((hsr_feature_wanted ^ hsr_feature_present) != 0); + + if (hsr_change_request) + ndev->features = features; + + return 0; +} + static const struct net_device_ops emac_netdev_ops = { .ndo_open = emac_ndo_open, .ndo_stop = emac_ndo_stop, @@ -737,6 +768,7 @@ static const struct net_device_ops emac_netdev_ops = { .ndo_eth_ioctl = icssg_ndo_ioctl, .ndo_get_stats64 = icssg_ndo_get_stats64, .ndo_get_phys_port_name = icssg_ndo_get_phys_port_name, + .ndo_set_features = emac_ndo_set_features, }; static int prueth_netdev_init(struct prueth *prueth, @@ -865,6 +897,7 @@ static int prueth_netdev_init(struct prueth *prueth, ndev->ethtool_ops = &icssg_ethtool_ops; ndev->hw_features = NETIF_F_SG; ndev->features = ndev->hw_features; + ndev->hw_features |= NETIF_F_HW_HSR_FWD; netif_napi_add(ndev, &emac->napi_rx, icssg_napi_rx_poll); hrtimer_init(&emac->rx_hrtimer, CLOCK_MONOTONIC, @@ -953,7 +986,7 @@ static void prueth_emac_restart(struct prueth *prueth) netif_device_attach(emac1->ndev); } -static void icssg_enable_switch_mode(struct prueth *prueth) +static void icssg_change_mode(struct prueth *prueth) { struct prueth_emac *emac; int mac; @@ -973,8 +1006,12 @@ static void icssg_enable_switch_mode(struct prueth *prueth) BIT(emac->port_id) | DEFAULT_PORT_MASK, BIT(emac->port_id) | DEFAULT_UNTAG_MASK, true); + if (prueth->is_hsr_offload_mode) + icssg_vtbl_modify(emac, DEFAULT_VID, DEFAULT_PORT_MASK, + DEFAULT_UNTAG_MASK, true); icssg_set_pvid(prueth, emac->port_vlan, emac->port_id); - icssg_set_port_state(emac, ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE); + if (prueth->is_switch_mode) + icssg_set_port_state(emac, ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE); } } } @@ -1012,7 +1049,7 @@ static int prueth_netdevice_port_link(struct net_device *ndev, prueth->is_switch_mode = true; prueth->default_vlan = 1; emac->port_vlan = prueth->default_vlan; - icssg_enable_switch_mode(prueth); + icssg_change_mode(prueth); } } @@ -1040,6 +1077,59 @@ static void prueth_netdevice_port_unlink(struct net_device *ndev) prueth->hw_bridge_dev = NULL; } +static int prueth_hsr_port_link(struct net_device *ndev) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + struct prueth_emac *emac0; + struct prueth_emac *emac1; + + emac0 = prueth->emac[PRUETH_MAC0]; + emac1 = prueth->emac[PRUETH_MAC1]; + + if (prueth->is_switch_mode) + return -EOPNOTSUPP; + + prueth->hsr_members |= BIT(emac->port_id); + if (!prueth->is_switch_mode && !prueth->is_hsr_offload_mode) { + if (prueth->hsr_members & BIT(PRUETH_PORT_MII0) && + prueth->hsr_members & BIT(PRUETH_PORT_MII1)) { + if (!(emac0->ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) && + !(emac1->ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES)) + return -EOPNOTSUPP; + prueth->is_hsr_offload_mode = true; + prueth->default_vlan = 1; + emac0->port_vlan = prueth->default_vlan; + emac1->port_vlan = prueth->default_vlan; + icssg_change_mode(prueth); + dev_dbg(prueth->dev, "Enabling HSR offload mode\n"); + } + } + + return 0; +} + +static void prueth_hsr_port_unlink(struct net_device *ndev) +{ + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; + struct prueth_emac *emac0; + struct prueth_emac *emac1; + + emac0 = prueth->emac[PRUETH_MAC0]; + emac1 = prueth->emac[PRUETH_MAC1]; + + prueth->hsr_members &= ~BIT(emac->port_id); + if (prueth->is_hsr_offload_mode) { + prueth->is_hsr_offload_mode = false; + emac0->port_vlan = 0; + emac1->port_vlan = 0; + prueth->hsr_dev = NULL; + prueth_emac_restart(prueth); + dev_dbg(prueth->dev, "Enabling Dual EMAC mode\n"); + } +} + /* netdev notifier */ static int prueth_netdevice_event(struct notifier_block *unused, unsigned long event, void *ptr) @@ -1047,6 +1137,8 @@ static int prueth_netdevice_event(struct notifier_block *unused, struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr); struct net_device *ndev = netdev_notifier_info_to_dev(ptr); struct netdev_notifier_changeupper_info *info; + struct prueth_emac *emac = netdev_priv(ndev); + struct prueth *prueth = emac->prueth; int ret = NOTIFY_DONE; if (ndev->netdev_ops != &emac_netdev_ops) @@ -1056,6 +1148,25 @@ static int prueth_netdevice_event(struct notifier_block *unused, case NETDEV_CHANGEUPPER: info = ptr; + if ((ndev->features & NETIF_PRUETH_HSR_OFFLOAD_FEATURES) && + is_hsr_master(info->upper_dev)) { + if (info->linking) { + if (!prueth->hsr_dev) { + prueth->hsr_dev = info->upper_dev; + icssg_class_set_host_mac_addr(prueth->miig_rt, + prueth->hsr_dev->dev_addr); + } else { + if (prueth->hsr_dev != info->upper_dev) { + dev_dbg(prueth->dev, "Both interfaces must be linked to same upper device\n"); + return -EOPNOTSUPP; + } + } + prueth_hsr_port_link(ndev); + } else { + prueth_hsr_port_unlink(ndev); + } + } + if (netif_is_bridge_master(info->upper_dev)) { if (info->linking) ret = prueth_netdevice_port_link(ndev, info->upper_dev, extack); diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h index 786bd1ba34ab..a4b025fae797 100644 --- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h +++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h @@ -243,11 +243,14 @@ struct icssg_firmwares { * @iep1: pointer to IEP1 device * @vlan_tbl: VLAN-FID table pointer * @hw_bridge_dev: pointer to HW bridge net device + * @hsr_dev: pointer to the HSR net device * @br_members: bitmask of bridge member ports + * @hsr_members: bitmask of hsr member ports * @prueth_netdevice_nb: netdevice notifier block * @prueth_switchdev_nb: switchdev notifier block * @prueth_switchdev_bl_nb: switchdev blocking notifier block * @is_switch_mode: flag to indicate if device is in Switch mode + * @is_hsr_offload_mode: flag to indicate if device is in hsr offload mode * @is_switchmode_supported: indicates platform support for switch mode * @switch_id: ID for mapping switch ports to bridge * @default_vlan: Default VLAN for host @@ -279,11 +282,14 @@ struct prueth { struct prueth_vlan_tbl *vlan_tbl; struct net_device *hw_bridge_dev; + struct net_device *hsr_dev; u8 br_members; + u8 hsr_members; struct notifier_block prueth_netdevice_nb; struct notifier_block prueth_switchdev_nb; struct notifier_block prueth_switchdev_bl_nb; bool is_switch_mode; + bool is_hsr_offload_mode; bool is_switchmode_supported; unsigned char switch_id[MAX_PHYS_ITEM_ID_LEN]; int default_vlan;
Add support for offloading HSR port-to-port frame forward to hardware. When the slave interfaces are added to the HSR interface, the PRU cores will be stopped and ICSSG HSR firmwares will be loaded to them. Similarly, when HSR interface is deleted, the PRU cores will be stopped and dual EMAC firmware will be loaded to them. This commit also renames some APIs that are common between switch and hsr mode with '_fw_offload' suffix. Signed-off-by: MD Danish Anwar <danishanwar@ti.com> --- .../net/ethernet/ti/icssg/icssg_classifier.c | 1 + drivers/net/ethernet/ti/icssg/icssg_config.c | 18 +-- drivers/net/ethernet/ti/icssg/icssg_prueth.c | 117 +++++++++++++++++- drivers/net/ethernet/ti/icssg/icssg_prueth.h | 6 + 4 files changed, 130 insertions(+), 12 deletions(-)