From 33bf1e86231dbd62f06f0ca3cdf5995eb7d077d5 Mon Sep 17 00:00:00 2001 From: Michal Swiatkowski Date: Fri, 1 Mar 2024 12:54:11 +0100 Subject: ice: remove switchdev control plane VSI For slow-path Rx and Tx PF VSI is used. There is no need to have control plane VSI. Remove all code related to it. Eswitch rebuild can't fail without rebuilding control plane VSI. Return void from ice_eswitch_rebuild(). Reviewed-by: Marcin Szycik Signed-off-by: Michal Swiatkowski Tested-by: Sujai Buvaneswaran Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/ice/ice_base.c | 36 +------------------------------ 1 file changed, 1 insertion(+), 35 deletions(-) (limited to 'drivers/net/ethernet/intel/ice/ice_base.c') diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c index d2fd315556a3..8ffae7fe894f 100644 --- a/drivers/net/ethernet/intel/ice/ice_base.c +++ b/drivers/net/ethernet/intel/ice/ice_base.c @@ -263,30 +263,6 @@ static u16 ice_calc_txq_handle(struct ice_vsi *vsi, struct ice_tx_ring *ring, u8 return ring->q_index - vsi->tc_cfg.tc_info[tc].qoffset; } -/** - * ice_eswitch_calc_txq_handle - * @ring: pointer to ring which unique index is needed - * - * To correctly work with many netdevs ring->q_index of Tx rings on switchdev - * VSI can repeat. Hardware ring setup requires unique q_index. Calculate it - * here by finding index in vsi->tx_rings of this ring. - * - * Return ICE_INVAL_Q_INDEX when index wasn't found. Should never happen, - * because VSI is get from ring->vsi, so it has to be present in this VSI. - */ -static u16 ice_eswitch_calc_txq_handle(struct ice_tx_ring *ring) -{ - const struct ice_vsi *vsi = ring->vsi; - int i; - - ice_for_each_txq(vsi, i) { - if (vsi->tx_rings[i] == ring) - return i; - } - - return ICE_INVAL_Q_INDEX; -} - /** * ice_cfg_xps_tx_ring - Configure XPS for a Tx ring * @ring: The Tx ring to configure @@ -353,9 +329,6 @@ ice_setup_tx_ctx(struct ice_tx_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf tlan_ctx->vmvf_num = hw->func_caps.vf_base_id + vsi->vf->vf_id; tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VF; break; - case ICE_VSI_SWITCHDEV_CTRL: - tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VMQ; - break; default: return; } @@ -919,14 +892,7 @@ ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_tx_ring *ring, /* Add unique software queue handle of the Tx queue per * TC into the VSI Tx ring */ - if (vsi->type == ICE_VSI_SWITCHDEV_CTRL) { - ring->q_handle = ice_eswitch_calc_txq_handle(ring); - - if (ring->q_handle == ICE_INVAL_Q_INDEX) - return -ENODEV; - } else { - ring->q_handle = ice_calc_txq_handle(vsi, ring, tc); - } + ring->q_handle = ice_calc_txq_handle(vsi, ring, tc); if (ch) status = ice_ena_vsi_txq(vsi->port_info, ch->ch_vsi->idx, 0, -- cgit v1.2.3 From 44ba608db50970dbb7eae1dca13ebcbf9485b4e7 Mon Sep 17 00:00:00 2001 From: Michal Swiatkowski Date: Fri, 1 Mar 2024 12:54:13 +0100 Subject: ice: do switchdev slow-path Rx using PF VSI Add an ICE_RX_FLAG_MULTIDEV flag to Rx ring. If it is set try to find correct port representor. Do it based on src_vsi value stored in flex descriptor. Ids of representor pointers stored in xarray are equal to corresponding src_vsi value. Thanks to that we can directly get correct representor if we have src_vsi value. Set multidev flag during ring configuration. If the mode is switchdev, change the ring descriptor to the one that contains src_vsi value. PF netdev should be reconfigured, do it by calling ice_down() and ice_up() if the netdev was up before configuring switchdev. Reviewed-by: Marcin Szycik Signed-off-by: Michal Swiatkowski Tested-by: Sujai Buvaneswaran Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/ice/ice_base.c | 8 ++++++ drivers/net/ethernet/intel/ice/ice_eswitch.c | 36 +++++++++++++++++++++++++++ drivers/net/ethernet/intel/ice/ice_eswitch.h | 9 +++++++ drivers/net/ethernet/intel/ice/ice_txrx.h | 1 + drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 9 ++++++- 5 files changed, 62 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet/intel/ice/ice_base.c') diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c index 8ffae7fe894f..662fc395edcc 100644 --- a/drivers/net/ethernet/intel/ice/ice_base.c +++ b/drivers/net/ethernet/intel/ice/ice_base.c @@ -452,6 +452,14 @@ static int ice_setup_rx_ctx(struct ice_rx_ring *ring) /* Rx queue threshold in units of 64 */ rlan_ctx.lrxqthresh = 1; + /* PF acts as uplink for switchdev; set flex descriptor with src_vsi + * metadata and flags to allow redirecting to PR netdev + */ + if (ice_is_eswitch_mode_switchdev(vsi->back)) { + ring->flags |= ICE_RX_FLAGS_MULTIDEV; + rxdid = ICE_RXDID_FLEX_NIC_2; + } + /* Enable Flexible Descriptors in the queue context which * allows this driver to select a specific receive descriptor format * increasing context priority to pick up profile ID; default is 0x01; diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch.c b/drivers/net/ethernet/intel/ice/ice_eswitch.c index 5eba8dec9f94..86a6d58ad3ec 100644 --- a/drivers/net/ethernet/intel/ice/ice_eswitch.c +++ b/drivers/net/ethernet/intel/ice/ice_eswitch.c @@ -21,8 +21,13 @@ static int ice_eswitch_setup_env(struct ice_pf *pf) { struct ice_vsi *uplink_vsi = pf->eswitch.uplink_vsi; struct net_device *netdev = uplink_vsi->netdev; + bool if_running = netif_running(netdev); struct ice_vsi_vlan_ops *vlan_ops; + if (if_running && !test_and_set_bit(ICE_VSI_DOWN, uplink_vsi->state)) + if (ice_down(uplink_vsi)) + return -ENODEV; + ice_remove_vsi_fltr(&pf->hw, uplink_vsi->idx); netif_addr_lock_bh(netdev); @@ -51,8 +56,13 @@ static int ice_eswitch_setup_env(struct ice_pf *pf) if (ice_vsi_update_local_lb(uplink_vsi, true)) goto err_override_local_lb; + if (if_running && ice_up(uplink_vsi)) + goto err_up; + return 0; +err_up: + ice_vsi_update_local_lb(uplink_vsi, false); err_override_local_lb: ice_vsi_update_security(uplink_vsi, ice_vsi_ctx_clear_allow_override); err_override_uplink: @@ -69,6 +79,9 @@ err_vlan_zero: ice_fltr_add_mac_and_broadcast(uplink_vsi, uplink_vsi->port_info->mac.perm_addr, ICE_FWD_TO_VSI); + if (if_running) + ice_up(uplink_vsi); + return -ENODEV; } @@ -493,3 +506,26 @@ void ice_eswitch_rebuild(struct ice_pf *pf) xa_for_each(&pf->eswitch.reprs, id, repr) ice_eswitch_detach(pf, repr->vf); } + +/** + * ice_eswitch_get_target - get netdev based on src_vsi from descriptor + * @rx_ring: ring used to receive the packet + * @rx_desc: descriptor used to get src_vsi value + * + * Get src_vsi value from descriptor and load correct representor. If it isn't + * found return rx_ring->netdev. + */ +struct net_device *ice_eswitch_get_target(struct ice_rx_ring *rx_ring, + union ice_32b_rx_flex_desc *rx_desc) +{ + struct ice_eswitch *eswitch = &rx_ring->vsi->back->eswitch; + struct ice_32b_rx_flex_desc_nic_2 *desc; + struct ice_repr *repr; + + desc = (struct ice_32b_rx_flex_desc_nic_2 *)rx_desc; + repr = xa_load(&eswitch->reprs, le16_to_cpu(desc->src_vsi)); + if (!repr) + return rx_ring->netdev; + + return repr->netdev; +} diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch.h b/drivers/net/ethernet/intel/ice/ice_eswitch.h index baad68507471..e2e5c0c75e7d 100644 --- a/drivers/net/ethernet/intel/ice/ice_eswitch.h +++ b/drivers/net/ethernet/intel/ice/ice_eswitch.h @@ -26,6 +26,8 @@ void ice_eswitch_set_target_vsi(struct sk_buff *skb, struct ice_tx_offload_params *off); netdev_tx_t ice_eswitch_port_start_xmit(struct sk_buff *skb, struct net_device *netdev); +struct net_device *ice_eswitch_get_target(struct ice_rx_ring *rx_ring, + union ice_32b_rx_flex_desc *rx_desc); #else /* CONFIG_ICE_SWITCHDEV */ static inline void ice_eswitch_detach(struct ice_pf *pf, struct ice_vf *vf) { } @@ -76,5 +78,12 @@ ice_eswitch_port_start_xmit(struct sk_buff *skb, struct net_device *netdev) { return NETDEV_TX_BUSY; } + +static inline struct net_device * +ice_eswitch_get_target(struct ice_rx_ring *rx_ring, + union ice_32b_rx_flex_desc *rx_desc) +{ + return rx_ring->netdev; +} #endif /* CONFIG_ICE_SWITCHDEV */ #endif /* _ICE_ESWITCH_H_ */ diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.h b/drivers/net/ethernet/intel/ice/ice_txrx.h index af955b0e5dc5..feba314a3fe4 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx.h +++ b/drivers/net/ethernet/intel/ice/ice_txrx.h @@ -365,6 +365,7 @@ struct ice_rx_ring { u8 ptp_rx; #define ICE_RX_FLAGS_RING_BUILD_SKB BIT(1) #define ICE_RX_FLAGS_CRC_STRIP_DIS BIT(2) +#define ICE_RX_FLAGS_MULTIDEV BIT(3) u8 flags; /* CL5 - 5th cacheline starts here */ struct xdp_rxq_info xdp_rxq; diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c index f8f1d2bdc1be..676c00e1554c 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c @@ -236,7 +236,14 @@ ice_process_skb_fields(struct ice_rx_ring *rx_ring, ice_rx_hash_to_skb(rx_ring, rx_desc, skb, ptype); /* modifies the skb - consumes the enet header */ - skb->protocol = eth_type_trans(skb, rx_ring->netdev); + if (unlikely(rx_ring->flags & ICE_RX_FLAGS_MULTIDEV)) { + struct net_device *netdev = ice_eswitch_get_target(rx_ring, + rx_desc); + + skb->protocol = eth_type_trans(skb, netdev); + } else { + skb->protocol = eth_type_trans(skb, rx_ring->netdev); + } ice_rx_csum(rx_ring, skb, rx_desc, ptype); -- cgit v1.2.3