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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/ethernet/intel/ice/ice_repr.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_repr.c')
-rw-r--r--drivers/net/ethernet/intel/ice/ice_repr.c467
1 files changed, 467 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_repr.c b/drivers/net/ethernet/intel/ice/ice_repr.c
new file mode 100644
index 000000000..bd31748aa
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_repr.c
@@ -0,0 +1,467 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2019-2021, Intel Corporation. */
+
+#include "ice.h"
+#include "ice_eswitch.h"
+#include "ice_devlink.h"
+#include "ice_sriov.h"
+#include "ice_tc_lib.h"
+
+/**
+ * ice_repr_get_sw_port_id - get port ID associated with representor
+ * @repr: pointer to port representor
+ */
+static int ice_repr_get_sw_port_id(struct ice_repr *repr)
+{
+ return repr->vf->pf->hw.port_info->lport;
+}
+
+/**
+ * ice_repr_get_phys_port_name - get phys port name
+ * @netdev: pointer to port representor netdev
+ * @buf: write here port name
+ * @len: max length of buf
+ */
+static int
+ice_repr_get_phys_port_name(struct net_device *netdev, char *buf, size_t len)
+{
+ struct ice_netdev_priv *np = netdev_priv(netdev);
+ struct ice_repr *repr = np->repr;
+ int res;
+
+ /* Devlink port is registered and devlink core is taking care of name formatting. */
+ if (repr->vf->devlink_port.devlink)
+ return -EOPNOTSUPP;
+
+ res = snprintf(buf, len, "pf%dvfr%d", ice_repr_get_sw_port_id(repr),
+ repr->vf->vf_id);
+ if (res <= 0)
+ return -EOPNOTSUPP;
+ return 0;
+}
+
+/**
+ * ice_repr_get_stats64 - get VF stats for VFPR use
+ * @netdev: pointer to port representor netdev
+ * @stats: pointer to struct where stats can be stored
+ */
+static void
+ice_repr_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
+{
+ struct ice_netdev_priv *np = netdev_priv(netdev);
+ struct ice_eth_stats *eth_stats;
+ struct ice_vsi *vsi;
+
+ if (ice_is_vf_disabled(np->repr->vf))
+ return;
+ vsi = np->repr->src_vsi;
+
+ ice_update_vsi_stats(vsi);
+ eth_stats = &vsi->eth_stats;
+
+ stats->tx_packets = eth_stats->tx_unicast + eth_stats->tx_broadcast +
+ eth_stats->tx_multicast;
+ stats->rx_packets = eth_stats->rx_unicast + eth_stats->rx_broadcast +
+ eth_stats->rx_multicast;
+ stats->tx_bytes = eth_stats->tx_bytes;
+ stats->rx_bytes = eth_stats->rx_bytes;
+ stats->multicast = eth_stats->rx_multicast;
+ stats->tx_errors = eth_stats->tx_errors;
+ stats->tx_dropped = eth_stats->tx_discards;
+ stats->rx_dropped = eth_stats->rx_discards;
+}
+
+/**
+ * ice_netdev_to_repr - Get port representor for given netdevice
+ * @netdev: pointer to port representor netdev
+ */
+struct ice_repr *ice_netdev_to_repr(struct net_device *netdev)
+{
+ struct ice_netdev_priv *np = netdev_priv(netdev);
+
+ return np->repr;
+}
+
+/**
+ * ice_repr_open - Enable port representor's network interface
+ * @netdev: network interface device structure
+ *
+ * The open entry point is called when a port representor's network
+ * interface is made active by the system (IFF_UP). Corresponding
+ * VF is notified about link status change.
+ *
+ * Returns 0 on success
+ */
+static int ice_repr_open(struct net_device *netdev)
+{
+ struct ice_repr *repr = ice_netdev_to_repr(netdev);
+ struct ice_vf *vf;
+
+ vf = repr->vf;
+ vf->link_forced = true;
+ vf->link_up = true;
+ ice_vc_notify_vf_link_state(vf);
+
+ netif_carrier_on(netdev);
+ netif_tx_start_all_queues(netdev);
+
+ return 0;
+}
+
+/**
+ * ice_repr_stop - Disable port representor's network interface
+ * @netdev: network interface device structure
+ *
+ * The stop entry point is called when a port representor's network
+ * interface is de-activated by the system. Corresponding
+ * VF is notified about link status change.
+ *
+ * Returns 0 on success
+ */
+static int ice_repr_stop(struct net_device *netdev)
+{
+ struct ice_repr *repr = ice_netdev_to_repr(netdev);
+ struct ice_vf *vf;
+
+ vf = repr->vf;
+ vf->link_forced = true;
+ vf->link_up = false;
+ ice_vc_notify_vf_link_state(vf);
+
+ netif_carrier_off(netdev);
+ netif_tx_stop_all_queues(netdev);
+
+ return 0;
+}
+
+static struct devlink_port *
+ice_repr_get_devlink_port(struct net_device *netdev)
+{
+ struct ice_repr *repr = ice_netdev_to_repr(netdev);
+
+ return &repr->vf->devlink_port;
+}
+
+/**
+ * ice_repr_sp_stats64 - get slow path stats for port representor
+ * @dev: network interface device structure
+ * @stats: netlink stats structure
+ *
+ * RX/TX stats are being swapped here to be consistent with VF stats. In slow
+ * path, port representor receives data when the corresponding VF is sending it
+ * (and vice versa), TX and RX bytes/packets are effectively swapped on port
+ * representor.
+ */
+static int
+ice_repr_sp_stats64(const struct net_device *dev,
+ struct rtnl_link_stats64 *stats)
+{
+ struct ice_netdev_priv *np = netdev_priv(dev);
+ int vf_id = np->repr->vf->vf_id;
+ struct ice_tx_ring *tx_ring;
+ struct ice_rx_ring *rx_ring;
+ u64 pkts, bytes;
+
+ tx_ring = np->vsi->tx_rings[vf_id];
+ ice_fetch_u64_stats_per_ring(&tx_ring->syncp, tx_ring->stats,
+ &pkts, &bytes);
+ stats->rx_packets = pkts;
+ stats->rx_bytes = bytes;
+
+ rx_ring = np->vsi->rx_rings[vf_id];
+ ice_fetch_u64_stats_per_ring(&rx_ring->syncp, rx_ring->stats,
+ &pkts, &bytes);
+ stats->tx_packets = pkts;
+ stats->tx_bytes = bytes;
+ stats->tx_dropped = rx_ring->rx_stats.alloc_page_failed +
+ rx_ring->rx_stats.alloc_buf_failed;
+
+ return 0;
+}
+
+static bool
+ice_repr_ndo_has_offload_stats(const struct net_device *dev, int attr_id)
+{
+ return attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT;
+}
+
+static int
+ice_repr_ndo_get_offload_stats(int attr_id, const struct net_device *dev,
+ void *sp)
+{
+ if (attr_id == IFLA_OFFLOAD_XSTATS_CPU_HIT)
+ return ice_repr_sp_stats64(dev, (struct rtnl_link_stats64 *)sp);
+
+ return -EINVAL;
+}
+
+static int
+ice_repr_setup_tc_cls_flower(struct ice_repr *repr,
+ struct flow_cls_offload *flower)
+{
+ switch (flower->command) {
+ case FLOW_CLS_REPLACE:
+ return ice_add_cls_flower(repr->netdev, repr->src_vsi, flower);
+ case FLOW_CLS_DESTROY:
+ return ice_del_cls_flower(repr->src_vsi, flower);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int
+ice_repr_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
+ void *cb_priv)
+{
+ struct flow_cls_offload *flower = (struct flow_cls_offload *)type_data;
+ struct ice_netdev_priv *np = (struct ice_netdev_priv *)cb_priv;
+
+ switch (type) {
+ case TC_SETUP_CLSFLOWER:
+ return ice_repr_setup_tc_cls_flower(np->repr, flower);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static LIST_HEAD(ice_repr_block_cb_list);
+
+static int
+ice_repr_setup_tc(struct net_device *netdev, enum tc_setup_type type,
+ void *type_data)
+{
+ struct ice_netdev_priv *np = netdev_priv(netdev);
+
+ switch (type) {
+ case TC_SETUP_BLOCK:
+ return flow_block_cb_setup_simple((struct flow_block_offload *)
+ type_data,
+ &ice_repr_block_cb_list,
+ ice_repr_setup_tc_block_cb,
+ np, np, true);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static const struct net_device_ops ice_repr_netdev_ops = {
+ .ndo_get_phys_port_name = ice_repr_get_phys_port_name,
+ .ndo_get_stats64 = ice_repr_get_stats64,
+ .ndo_open = ice_repr_open,
+ .ndo_stop = ice_repr_stop,
+ .ndo_start_xmit = ice_eswitch_port_start_xmit,
+ .ndo_get_devlink_port = ice_repr_get_devlink_port,
+ .ndo_setup_tc = ice_repr_setup_tc,
+ .ndo_has_offload_stats = ice_repr_ndo_has_offload_stats,
+ .ndo_get_offload_stats = ice_repr_ndo_get_offload_stats,
+};
+
+/**
+ * ice_is_port_repr_netdev - Check if a given netdevice is a port representor netdev
+ * @netdev: pointer to netdev
+ */
+bool ice_is_port_repr_netdev(struct net_device *netdev)
+{
+ return netdev && (netdev->netdev_ops == &ice_repr_netdev_ops);
+}
+
+/**
+ * ice_repr_reg_netdev - register port representor netdev
+ * @netdev: pointer to port representor netdev
+ */
+static int
+ice_repr_reg_netdev(struct net_device *netdev)
+{
+ eth_hw_addr_random(netdev);
+ netdev->netdev_ops = &ice_repr_netdev_ops;
+ ice_set_ethtool_repr_ops(netdev);
+
+ netdev->hw_features |= NETIF_F_HW_TC;
+
+ netif_carrier_off(netdev);
+ netif_tx_stop_all_queues(netdev);
+
+ return register_netdev(netdev);
+}
+
+/**
+ * ice_repr_add - add representor for VF
+ * @vf: pointer to VF structure
+ */
+static int ice_repr_add(struct ice_vf *vf)
+{
+ struct ice_q_vector *q_vector;
+ struct ice_netdev_priv *np;
+ struct ice_repr *repr;
+ struct ice_vsi *vsi;
+ int err;
+
+ vsi = ice_get_vf_vsi(vf);
+ if (!vsi)
+ return -EINVAL;
+
+ repr = kzalloc(sizeof(*repr), GFP_KERNEL);
+ if (!repr)
+ return -ENOMEM;
+
+#ifdef CONFIG_ICE_SWITCHDEV
+ repr->mac_rule = kzalloc(sizeof(*repr->mac_rule), GFP_KERNEL);
+ if (!repr->mac_rule) {
+ err = -ENOMEM;
+ goto err_alloc_rule;
+ }
+#endif
+
+ repr->netdev = alloc_etherdev(sizeof(struct ice_netdev_priv));
+ if (!repr->netdev) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ repr->src_vsi = vsi;
+ repr->vf = vf;
+ vf->repr = repr;
+ np = netdev_priv(repr->netdev);
+ np->repr = repr;
+
+ q_vector = kzalloc(sizeof(*q_vector), GFP_KERNEL);
+ if (!q_vector) {
+ err = -ENOMEM;
+ goto err_alloc_q_vector;
+ }
+ repr->q_vector = q_vector;
+
+ err = ice_devlink_create_vf_port(vf);
+ if (err)
+ goto err_devlink;
+
+ repr->netdev->min_mtu = ETH_MIN_MTU;
+ repr->netdev->max_mtu = ICE_MAX_MTU;
+
+ SET_NETDEV_DEV(repr->netdev, ice_pf_to_dev(vf->pf));
+ err = ice_repr_reg_netdev(repr->netdev);
+ if (err)
+ goto err_netdev;
+
+ devlink_port_type_eth_set(&vf->devlink_port, repr->netdev);
+
+ ice_virtchnl_set_repr_ops(vf);
+
+ return 0;
+
+err_netdev:
+ ice_devlink_destroy_vf_port(vf);
+err_devlink:
+ kfree(repr->q_vector);
+ vf->repr->q_vector = NULL;
+err_alloc_q_vector:
+ free_netdev(repr->netdev);
+ repr->netdev = NULL;
+err_alloc:
+#ifdef CONFIG_ICE_SWITCHDEV
+ kfree(repr->mac_rule);
+ repr->mac_rule = NULL;
+err_alloc_rule:
+#endif
+ kfree(repr);
+ vf->repr = NULL;
+ return err;
+}
+
+/**
+ * ice_repr_rem - remove representor from VF
+ * @vf: pointer to VF structure
+ */
+static void ice_repr_rem(struct ice_vf *vf)
+{
+ if (!vf->repr)
+ return;
+
+ kfree(vf->repr->q_vector);
+ vf->repr->q_vector = NULL;
+ unregister_netdev(vf->repr->netdev);
+ ice_devlink_destroy_vf_port(vf);
+ free_netdev(vf->repr->netdev);
+ vf->repr->netdev = NULL;
+#ifdef CONFIG_ICE_SWITCHDEV
+ kfree(vf->repr->mac_rule);
+ vf->repr->mac_rule = NULL;
+#endif
+ kfree(vf->repr);
+ vf->repr = NULL;
+
+ ice_virtchnl_set_dflt_ops(vf);
+}
+
+/**
+ * ice_repr_rem_from_all_vfs - remove port representor for all VFs
+ * @pf: pointer to PF structure
+ */
+void ice_repr_rem_from_all_vfs(struct ice_pf *pf)
+{
+ struct ice_vf *vf;
+ unsigned int bkt;
+
+ lockdep_assert_held(&pf->vfs.table_lock);
+
+ ice_for_each_vf(pf, bkt, vf)
+ ice_repr_rem(vf);
+}
+
+/**
+ * ice_repr_add_for_all_vfs - add port representor for all VFs
+ * @pf: pointer to PF structure
+ */
+int ice_repr_add_for_all_vfs(struct ice_pf *pf)
+{
+ struct ice_vf *vf;
+ unsigned int bkt;
+ int err;
+
+ lockdep_assert_held(&pf->vfs.table_lock);
+
+ ice_for_each_vf(pf, bkt, vf) {
+ err = ice_repr_add(vf);
+ if (err)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ ice_repr_rem_from_all_vfs(pf);
+
+ return err;
+}
+
+/**
+ * ice_repr_start_tx_queues - start Tx queues of port representor
+ * @repr: pointer to repr structure
+ */
+void ice_repr_start_tx_queues(struct ice_repr *repr)
+{
+ netif_carrier_on(repr->netdev);
+ netif_tx_start_all_queues(repr->netdev);
+}
+
+/**
+ * ice_repr_stop_tx_queues - stop Tx queues of port representor
+ * @repr: pointer to repr structure
+ */
+void ice_repr_stop_tx_queues(struct ice_repr *repr)
+{
+ netif_carrier_off(repr->netdev);
+ netif_tx_stop_all_queues(repr->netdev);
+}
+
+/**
+ * ice_repr_set_traffic_vsi - set traffic VSI for port representor
+ * @repr: repr on with VSI will be set
+ * @vsi: pointer to VSI that will be used by port representor to pass traffic
+ */
+void ice_repr_set_traffic_vsi(struct ice_repr *repr, struct ice_vsi *vsi)
+{
+ struct ice_netdev_priv *np = netdev_priv(repr->netdev);
+
+ np->vsi = vsi;
+}