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path: root/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
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Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c')
-rw-r--r--drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c307
1 files changed, 307 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
new file mode 100644
index 000000000..7fefe1574
--- /dev/null
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
@@ -0,0 +1,307 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+#include "dpaa2-eth.h"
+/* Copyright 2020 NXP
+ */
+
+#define DPAA2_ETH_TRAP_DROP(_id, _group_id) \
+ DEVLINK_TRAP_GENERIC(DROP, DROP, _id, \
+ DEVLINK_TRAP_GROUP_GENERIC_ID_##_group_id, 0)
+
+static const struct devlink_trap_group dpaa2_eth_trap_groups_arr[] = {
+ DEVLINK_TRAP_GROUP_GENERIC(PARSER_ERROR_DROPS, 0),
+};
+
+static const struct devlink_trap dpaa2_eth_traps_arr[] = {
+ DPAA2_ETH_TRAP_DROP(VXLAN_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(LLC_SNAP_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(VLAN_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(PPPOE_PPP_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(MPLS_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(ARP_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(IP_1_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(IP_N_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(GRE_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(UDP_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(TCP_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(IPSEC_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(SCTP_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(DCCP_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(GTP_PARSING, PARSER_ERROR_DROPS),
+ DPAA2_ETH_TRAP_DROP(ESP_PARSING, PARSER_ERROR_DROPS),
+};
+
+static int dpaa2_eth_dl_info_get(struct devlink *devlink,
+ struct devlink_info_req *req,
+ struct netlink_ext_ack *extack)
+{
+ struct dpaa2_eth_devlink_priv *dl_priv = devlink_priv(devlink);
+ struct dpaa2_eth_priv *priv = dl_priv->dpaa2_priv;
+ char buf[10];
+ int err;
+
+ err = devlink_info_driver_name_put(req, KBUILD_MODNAME);
+ if (err)
+ return err;
+
+ scnprintf(buf, 10, "%d.%d", priv->dpni_ver_major, priv->dpni_ver_minor);
+ err = devlink_info_version_running_put(req, "dpni", buf);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static struct dpaa2_eth_trap_item *
+dpaa2_eth_dl_trap_item_lookup(struct dpaa2_eth_priv *priv, u16 trap_id)
+{
+ struct dpaa2_eth_trap_data *dpaa2_eth_trap_data = priv->trap_data;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(dpaa2_eth_traps_arr); i++) {
+ if (dpaa2_eth_traps_arr[i].id == trap_id)
+ return &dpaa2_eth_trap_data->trap_items_arr[i];
+ }
+
+ return NULL;
+}
+
+struct dpaa2_eth_trap_item *dpaa2_eth_dl_get_trap(struct dpaa2_eth_priv *priv,
+ struct dpaa2_fapr *fapr)
+{
+ static const struct dpaa2_faf_error_bit {
+ int position;
+ enum devlink_trap_generic_id trap_id;
+ } faf_bits[] = {
+ { .position = 5, .trap_id = DEVLINK_TRAP_GENERIC_ID_VXLAN_PARSING },
+ { .position = 20, .trap_id = DEVLINK_TRAP_GENERIC_ID_LLC_SNAP_PARSING },
+ { .position = 24, .trap_id = DEVLINK_TRAP_GENERIC_ID_VLAN_PARSING },
+ { .position = 26, .trap_id = DEVLINK_TRAP_GENERIC_ID_PPPOE_PPP_PARSING },
+ { .position = 29, .trap_id = DEVLINK_TRAP_GENERIC_ID_MPLS_PARSING },
+ { .position = 31, .trap_id = DEVLINK_TRAP_GENERIC_ID_ARP_PARSING },
+ { .position = 52, .trap_id = DEVLINK_TRAP_GENERIC_ID_IP_1_PARSING },
+ { .position = 61, .trap_id = DEVLINK_TRAP_GENERIC_ID_IP_N_PARSING },
+ { .position = 67, .trap_id = DEVLINK_TRAP_GENERIC_ID_GRE_PARSING },
+ { .position = 71, .trap_id = DEVLINK_TRAP_GENERIC_ID_UDP_PARSING },
+ { .position = 76, .trap_id = DEVLINK_TRAP_GENERIC_ID_TCP_PARSING },
+ { .position = 80, .trap_id = DEVLINK_TRAP_GENERIC_ID_IPSEC_PARSING },
+ { .position = 82, .trap_id = DEVLINK_TRAP_GENERIC_ID_SCTP_PARSING },
+ { .position = 84, .trap_id = DEVLINK_TRAP_GENERIC_ID_DCCP_PARSING },
+ { .position = 88, .trap_id = DEVLINK_TRAP_GENERIC_ID_GTP_PARSING },
+ { .position = 90, .trap_id = DEVLINK_TRAP_GENERIC_ID_ESP_PARSING },
+ };
+ u64 faf_word;
+ u64 mask;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(faf_bits); i++) {
+ if (faf_bits[i].position < 32) {
+ /* Low part of FAF.
+ * position ranges from 31 to 0, mask from 0 to 31.
+ */
+ mask = 1ull << (31 - faf_bits[i].position);
+ faf_word = __le32_to_cpu(fapr->faf_lo);
+ } else {
+ /* High part of FAF.
+ * position ranges from 95 to 32, mask from 0 to 63.
+ */
+ mask = 1ull << (63 - (faf_bits[i].position - 32));
+ faf_word = __le64_to_cpu(fapr->faf_hi);
+ }
+ if (faf_word & mask)
+ return dpaa2_eth_dl_trap_item_lookup(priv, faf_bits[i].trap_id);
+ }
+ return NULL;
+}
+
+static int dpaa2_eth_dl_trap_init(struct devlink *devlink,
+ const struct devlink_trap *trap,
+ void *trap_ctx)
+{
+ struct dpaa2_eth_devlink_priv *dl_priv = devlink_priv(devlink);
+ struct dpaa2_eth_priv *priv = dl_priv->dpaa2_priv;
+ struct dpaa2_eth_trap_item *dpaa2_eth_trap_item;
+
+ dpaa2_eth_trap_item = dpaa2_eth_dl_trap_item_lookup(priv, trap->id);
+ if (WARN_ON(!dpaa2_eth_trap_item))
+ return -ENOENT;
+
+ dpaa2_eth_trap_item->trap_ctx = trap_ctx;
+
+ return 0;
+}
+
+static int dpaa2_eth_dl_trap_action_set(struct devlink *devlink,
+ const struct devlink_trap *trap,
+ enum devlink_trap_action action,
+ struct netlink_ext_ack *extack)
+{
+ /* No support for changing the action of an independent packet trap,
+ * only per trap group - parser error drops
+ */
+ NL_SET_ERR_MSG_MOD(extack,
+ "Cannot change trap action independently of group");
+ return -EOPNOTSUPP;
+}
+
+static int dpaa2_eth_dl_trap_group_action_set(struct devlink *devlink,
+ const struct devlink_trap_group *group,
+ enum devlink_trap_action action,
+ struct netlink_ext_ack *extack)
+{
+ struct dpaa2_eth_devlink_priv *dl_priv = devlink_priv(devlink);
+ struct dpaa2_eth_priv *priv = dl_priv->dpaa2_priv;
+ struct net_device *net_dev = priv->net_dev;
+ struct device *dev = net_dev->dev.parent;
+ struct dpni_error_cfg err_cfg = {0};
+ int err;
+
+ if (group->id != DEVLINK_TRAP_GROUP_GENERIC_ID_PARSER_ERROR_DROPS)
+ return -EOPNOTSUPP;
+
+ /* Configure handling of frames marked as errors from the parser */
+ err_cfg.errors = DPAA2_FAS_RX_ERR_MASK;
+ err_cfg.set_frame_annotation = 1;
+
+ switch (action) {
+ case DEVLINK_TRAP_ACTION_DROP:
+ err_cfg.error_action = DPNI_ERROR_ACTION_DISCARD;
+ break;
+ case DEVLINK_TRAP_ACTION_TRAP:
+ err_cfg.error_action = DPNI_ERROR_ACTION_SEND_TO_ERROR_QUEUE;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ err = dpni_set_errors_behavior(priv->mc_io, 0, priv->mc_token, &err_cfg);
+ if (err) {
+ dev_err(dev, "dpni_set_errors_behavior failed\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static const struct devlink_ops dpaa2_eth_devlink_ops = {
+ .info_get = dpaa2_eth_dl_info_get,
+ .trap_init = dpaa2_eth_dl_trap_init,
+ .trap_action_set = dpaa2_eth_dl_trap_action_set,
+ .trap_group_action_set = dpaa2_eth_dl_trap_group_action_set,
+};
+
+int dpaa2_eth_dl_alloc(struct dpaa2_eth_priv *priv)
+{
+ struct net_device *net_dev = priv->net_dev;
+ struct device *dev = net_dev->dev.parent;
+ struct dpaa2_eth_devlink_priv *dl_priv;
+
+ priv->devlink =
+ devlink_alloc(&dpaa2_eth_devlink_ops, sizeof(*dl_priv), dev);
+ if (!priv->devlink) {
+ dev_err(dev, "devlink_alloc failed\n");
+ return -ENOMEM;
+ }
+ dl_priv = devlink_priv(priv->devlink);
+ dl_priv->dpaa2_priv = priv;
+ return 0;
+}
+
+void dpaa2_eth_dl_free(struct dpaa2_eth_priv *priv)
+{
+ devlink_free(priv->devlink);
+}
+
+
+void dpaa2_eth_dl_register(struct dpaa2_eth_priv *priv)
+{
+ devlink_register(priv->devlink);
+}
+
+void dpaa2_eth_dl_unregister(struct dpaa2_eth_priv *priv)
+{
+ devlink_unregister(priv->devlink);
+}
+
+int dpaa2_eth_dl_port_add(struct dpaa2_eth_priv *priv)
+{
+ struct devlink_port *devlink_port = &priv->devlink_port;
+ struct devlink_port_attrs attrs = {};
+ int err;
+
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
+ devlink_port_attrs_set(devlink_port, &attrs);
+
+ err = devlink_port_register(priv->devlink, devlink_port, 0);
+ if (err)
+ return err;
+
+ devlink_port_type_eth_set(devlink_port, priv->net_dev);
+
+ return 0;
+}
+
+void dpaa2_eth_dl_port_del(struct dpaa2_eth_priv *priv)
+{
+ struct devlink_port *devlink_port = &priv->devlink_port;
+
+ devlink_port_type_clear(devlink_port);
+ devlink_port_unregister(devlink_port);
+}
+
+int dpaa2_eth_dl_traps_register(struct dpaa2_eth_priv *priv)
+{
+ struct dpaa2_eth_trap_data *dpaa2_eth_trap_data;
+ struct net_device *net_dev = priv->net_dev;
+ struct device *dev = net_dev->dev.parent;
+ int err;
+
+ dpaa2_eth_trap_data = kzalloc(sizeof(*dpaa2_eth_trap_data), GFP_KERNEL);
+ if (!dpaa2_eth_trap_data)
+ return -ENOMEM;
+ priv->trap_data = dpaa2_eth_trap_data;
+
+ dpaa2_eth_trap_data->trap_items_arr = kcalloc(ARRAY_SIZE(dpaa2_eth_traps_arr),
+ sizeof(struct dpaa2_eth_trap_item),
+ GFP_KERNEL);
+ if (!dpaa2_eth_trap_data->trap_items_arr) {
+ err = -ENOMEM;
+ goto trap_data_free;
+ }
+
+ err = devlink_trap_groups_register(priv->devlink, dpaa2_eth_trap_groups_arr,
+ ARRAY_SIZE(dpaa2_eth_trap_groups_arr));
+ if (err) {
+ dev_err(dev, "devlink_trap_groups_register() = %d\n", err);
+ goto trap_items_arr_free;
+ }
+
+ err = devlink_traps_register(priv->devlink, dpaa2_eth_traps_arr,
+ ARRAY_SIZE(dpaa2_eth_traps_arr), priv);
+ if (err) {
+ dev_err(dev, "devlink_traps_register() = %d\n", err);
+ goto trap_groups_unregiser;
+ }
+
+ return 0;
+
+trap_groups_unregiser:
+ devlink_trap_groups_unregister(priv->devlink, dpaa2_eth_trap_groups_arr,
+ ARRAY_SIZE(dpaa2_eth_trap_groups_arr));
+trap_items_arr_free:
+ kfree(dpaa2_eth_trap_data->trap_items_arr);
+trap_data_free:
+ kfree(dpaa2_eth_trap_data);
+ priv->trap_data = NULL;
+
+ return err;
+}
+
+void dpaa2_eth_dl_traps_unregister(struct dpaa2_eth_priv *priv)
+{
+ devlink_traps_unregister(priv->devlink, dpaa2_eth_traps_arr,
+ ARRAY_SIZE(dpaa2_eth_traps_arr));
+ devlink_trap_groups_unregister(priv->devlink, dpaa2_eth_trap_groups_arr,
+ ARRAY_SIZE(dpaa2_eth_trap_groups_arr));
+ kfree(priv->trap_data->trap_items_arr);
+ kfree(priv->trap_data);
+}