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