| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * DPAA2 Ethernet Switch flower support |
| * |
| * Copyright 2021 NXP |
| * |
| */ |
| |
| #include "dpaa2-switch.h" |
| |
| static int dpaa2_switch_flower_parse_key(struct flow_cls_offload *cls, |
| struct dpsw_acl_key *acl_key) |
| { |
| struct flow_rule *rule = flow_cls_offload_flow_rule(cls); |
| struct flow_dissector *dissector = rule->match.dissector; |
| struct netlink_ext_ack *extack = cls->common.extack; |
| struct dpsw_acl_fields *acl_h, *acl_m; |
| |
| if (dissector->used_keys & |
| ~(BIT(FLOW_DISSECTOR_KEY_BASIC) | |
| BIT(FLOW_DISSECTOR_KEY_CONTROL) | |
| BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | |
| BIT(FLOW_DISSECTOR_KEY_VLAN) | |
| BIT(FLOW_DISSECTOR_KEY_PORTS) | |
| BIT(FLOW_DISSECTOR_KEY_IP) | |
| BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | |
| BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS))) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Unsupported keys used"); |
| return -EOPNOTSUPP; |
| } |
| |
| acl_h = &acl_key->match; |
| acl_m = &acl_key->mask; |
| |
| if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { |
| struct flow_match_basic match; |
| |
| flow_rule_match_basic(rule, &match); |
| acl_h->l3_protocol = match.key->ip_proto; |
| acl_h->l2_ether_type = be16_to_cpu(match.key->n_proto); |
| acl_m->l3_protocol = match.mask->ip_proto; |
| acl_m->l2_ether_type = be16_to_cpu(match.mask->n_proto); |
| } |
| |
| if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { |
| struct flow_match_eth_addrs match; |
| |
| flow_rule_match_eth_addrs(rule, &match); |
| ether_addr_copy(acl_h->l2_dest_mac, &match.key->dst[0]); |
| ether_addr_copy(acl_h->l2_source_mac, &match.key->src[0]); |
| ether_addr_copy(acl_m->l2_dest_mac, &match.mask->dst[0]); |
| ether_addr_copy(acl_m->l2_source_mac, &match.mask->src[0]); |
| } |
| |
| if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { |
| struct flow_match_vlan match; |
| |
| flow_rule_match_vlan(rule, &match); |
| acl_h->l2_vlan_id = match.key->vlan_id; |
| acl_h->l2_tpid = be16_to_cpu(match.key->vlan_tpid); |
| acl_h->l2_pcp_dei = match.key->vlan_priority << 1 | |
| match.key->vlan_dei; |
| |
| acl_m->l2_vlan_id = match.mask->vlan_id; |
| acl_m->l2_tpid = be16_to_cpu(match.mask->vlan_tpid); |
| acl_m->l2_pcp_dei = match.mask->vlan_priority << 1 | |
| match.mask->vlan_dei; |
| } |
| |
| if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV4_ADDRS)) { |
| struct flow_match_ipv4_addrs match; |
| |
| flow_rule_match_ipv4_addrs(rule, &match); |
| acl_h->l3_source_ip = be32_to_cpu(match.key->src); |
| acl_h->l3_dest_ip = be32_to_cpu(match.key->dst); |
| acl_m->l3_source_ip = be32_to_cpu(match.mask->src); |
| acl_m->l3_dest_ip = be32_to_cpu(match.mask->dst); |
| } |
| |
| if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { |
| struct flow_match_ports match; |
| |
| flow_rule_match_ports(rule, &match); |
| acl_h->l4_source_port = be16_to_cpu(match.key->src); |
| acl_h->l4_dest_port = be16_to_cpu(match.key->dst); |
| acl_m->l4_source_port = be16_to_cpu(match.mask->src); |
| acl_m->l4_dest_port = be16_to_cpu(match.mask->dst); |
| } |
| |
| if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) { |
| struct flow_match_ip match; |
| |
| flow_rule_match_ip(rule, &match); |
| if (match.mask->ttl != 0) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Matching on TTL not supported"); |
| return -EOPNOTSUPP; |
| } |
| |
| if ((match.mask->tos & 0x3) != 0) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Matching on ECN not supported, only DSCP"); |
| return -EOPNOTSUPP; |
| } |
| |
| acl_h->l3_dscp = match.key->tos >> 2; |
| acl_m->l3_dscp = match.mask->tos >> 2; |
| } |
| |
| return 0; |
| } |
| |
| int dpaa2_switch_acl_entry_add(struct dpaa2_switch_filter_block *filter_block, |
| struct dpaa2_switch_acl_entry *entry) |
| { |
| struct dpsw_acl_entry_cfg *acl_entry_cfg = &entry->cfg; |
| struct ethsw_core *ethsw = filter_block->ethsw; |
| struct dpsw_acl_key *acl_key = &entry->key; |
| struct device *dev = ethsw->dev; |
| u8 *cmd_buff; |
| int err; |
| |
| cmd_buff = kzalloc(DPAA2_ETHSW_PORT_ACL_CMD_BUF_SIZE, GFP_KERNEL); |
| if (!cmd_buff) |
| return -ENOMEM; |
| |
| dpsw_acl_prepare_entry_cfg(acl_key, cmd_buff); |
| |
| acl_entry_cfg->key_iova = dma_map_single(dev, cmd_buff, |
| DPAA2_ETHSW_PORT_ACL_CMD_BUF_SIZE, |
| DMA_TO_DEVICE); |
| if (unlikely(dma_mapping_error(dev, acl_entry_cfg->key_iova))) { |
| dev_err(dev, "DMA mapping failed\n"); |
| return -EFAULT; |
| } |
| |
| err = dpsw_acl_add_entry(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| filter_block->acl_id, acl_entry_cfg); |
| |
| dma_unmap_single(dev, acl_entry_cfg->key_iova, sizeof(cmd_buff), |
| DMA_TO_DEVICE); |
| if (err) { |
| dev_err(dev, "dpsw_acl_add_entry() failed %d\n", err); |
| return err; |
| } |
| |
| kfree(cmd_buff); |
| |
| return 0; |
| } |
| |
| static int |
| dpaa2_switch_acl_entry_remove(struct dpaa2_switch_filter_block *block, |
| struct dpaa2_switch_acl_entry *entry) |
| { |
| struct dpsw_acl_entry_cfg *acl_entry_cfg = &entry->cfg; |
| struct dpsw_acl_key *acl_key = &entry->key; |
| struct ethsw_core *ethsw = block->ethsw; |
| struct device *dev = ethsw->dev; |
| u8 *cmd_buff; |
| int err; |
| |
| cmd_buff = kzalloc(DPAA2_ETHSW_PORT_ACL_CMD_BUF_SIZE, GFP_KERNEL); |
| if (!cmd_buff) |
| return -ENOMEM; |
| |
| dpsw_acl_prepare_entry_cfg(acl_key, cmd_buff); |
| |
| acl_entry_cfg->key_iova = dma_map_single(dev, cmd_buff, |
| DPAA2_ETHSW_PORT_ACL_CMD_BUF_SIZE, |
| DMA_TO_DEVICE); |
| if (unlikely(dma_mapping_error(dev, acl_entry_cfg->key_iova))) { |
| dev_err(dev, "DMA mapping failed\n"); |
| return -EFAULT; |
| } |
| |
| err = dpsw_acl_remove_entry(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| block->acl_id, acl_entry_cfg); |
| |
| dma_unmap_single(dev, acl_entry_cfg->key_iova, sizeof(cmd_buff), |
| DMA_TO_DEVICE); |
| if (err) { |
| dev_err(dev, "dpsw_acl_remove_entry() failed %d\n", err); |
| return err; |
| } |
| |
| kfree(cmd_buff); |
| |
| return 0; |
| } |
| |
| static int |
| dpaa2_switch_acl_entry_add_to_list(struct dpaa2_switch_filter_block *block, |
| struct dpaa2_switch_acl_entry *entry) |
| { |
| struct dpaa2_switch_acl_entry *tmp; |
| struct list_head *pos, *n; |
| int index = 0; |
| |
| if (list_empty(&block->acl_entries)) { |
| list_add(&entry->list, &block->acl_entries); |
| return index; |
| } |
| |
| list_for_each_safe(pos, n, &block->acl_entries) { |
| tmp = list_entry(pos, struct dpaa2_switch_acl_entry, list); |
| if (entry->prio < tmp->prio) |
| break; |
| index++; |
| } |
| list_add(&entry->list, pos->prev); |
| return index; |
| } |
| |
| static struct dpaa2_switch_acl_entry* |
| dpaa2_switch_acl_entry_get_by_index(struct dpaa2_switch_filter_block *block, |
| int index) |
| { |
| struct dpaa2_switch_acl_entry *tmp; |
| int i = 0; |
| |
| list_for_each_entry(tmp, &block->acl_entries, list) { |
| if (i == index) |
| return tmp; |
| ++i; |
| } |
| |
| return NULL; |
| } |
| |
| static int |
| dpaa2_switch_acl_entry_set_precedence(struct dpaa2_switch_filter_block *block, |
| struct dpaa2_switch_acl_entry *entry, |
| int precedence) |
| { |
| int err; |
| |
| err = dpaa2_switch_acl_entry_remove(block, entry); |
| if (err) |
| return err; |
| |
| entry->cfg.precedence = precedence; |
| return dpaa2_switch_acl_entry_add(block, entry); |
| } |
| |
| static int |
| dpaa2_switch_acl_tbl_add_entry(struct dpaa2_switch_filter_block *block, |
| struct dpaa2_switch_acl_entry *entry) |
| { |
| struct dpaa2_switch_acl_entry *tmp; |
| int index, i, precedence, err; |
| |
| /* Add the new ACL entry to the linked list and get its index */ |
| index = dpaa2_switch_acl_entry_add_to_list(block, entry); |
| |
| /* Move up in priority the ACL entries to make space |
| * for the new filter. |
| */ |
| precedence = DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES - block->num_acl_rules - 1; |
| for (i = 0; i < index; i++) { |
| tmp = dpaa2_switch_acl_entry_get_by_index(block, i); |
| |
| err = dpaa2_switch_acl_entry_set_precedence(block, tmp, |
| precedence); |
| if (err) |
| return err; |
| |
| precedence++; |
| } |
| |
| /* Add the new entry to hardware */ |
| entry->cfg.precedence = precedence; |
| err = dpaa2_switch_acl_entry_add(block, entry); |
| block->num_acl_rules++; |
| |
| return err; |
| } |
| |
| static struct dpaa2_switch_acl_entry * |
| dpaa2_switch_acl_tbl_find_entry_by_cookie(struct dpaa2_switch_filter_block *block, |
| unsigned long cookie) |
| { |
| struct dpaa2_switch_acl_entry *tmp, *n; |
| |
| list_for_each_entry_safe(tmp, n, &block->acl_entries, list) { |
| if (tmp->cookie == cookie) |
| return tmp; |
| } |
| return NULL; |
| } |
| |
| static int |
| dpaa2_switch_acl_entry_get_index(struct dpaa2_switch_filter_block *block, |
| struct dpaa2_switch_acl_entry *entry) |
| { |
| struct dpaa2_switch_acl_entry *tmp, *n; |
| int index = 0; |
| |
| list_for_each_entry_safe(tmp, n, &block->acl_entries, list) { |
| if (tmp->cookie == entry->cookie) |
| return index; |
| index++; |
| } |
| return -ENOENT; |
| } |
| |
| static struct dpaa2_switch_mirror_entry * |
| dpaa2_switch_mirror_find_entry_by_cookie(struct dpaa2_switch_filter_block *block, |
| unsigned long cookie) |
| { |
| struct dpaa2_switch_mirror_entry *tmp, *n; |
| |
| list_for_each_entry_safe(tmp, n, &block->mirror_entries, list) { |
| if (tmp->cookie == cookie) |
| return tmp; |
| } |
| return NULL; |
| } |
| |
| static int |
| dpaa2_switch_acl_tbl_remove_entry(struct dpaa2_switch_filter_block *block, |
| struct dpaa2_switch_acl_entry *entry) |
| { |
| struct dpaa2_switch_acl_entry *tmp; |
| int index, i, precedence, err; |
| |
| index = dpaa2_switch_acl_entry_get_index(block, entry); |
| |
| /* Remove from hardware the ACL entry */ |
| err = dpaa2_switch_acl_entry_remove(block, entry); |
| if (err) |
| return err; |
| |
| block->num_acl_rules--; |
| |
| /* Remove it from the list also */ |
| list_del(&entry->list); |
| |
| /* Move down in priority the entries over the deleted one */ |
| precedence = entry->cfg.precedence; |
| for (i = index - 1; i >= 0; i--) { |
| tmp = dpaa2_switch_acl_entry_get_by_index(block, i); |
| err = dpaa2_switch_acl_entry_set_precedence(block, tmp, |
| precedence); |
| if (err) |
| return err; |
| |
| precedence--; |
| } |
| |
| kfree(entry); |
| |
| return 0; |
| } |
| |
| static int dpaa2_switch_tc_parse_action_acl(struct ethsw_core *ethsw, |
| struct flow_action_entry *cls_act, |
| struct dpsw_acl_result *dpsw_act, |
| struct netlink_ext_ack *extack) |
| { |
| int err = 0; |
| |
| switch (cls_act->id) { |
| case FLOW_ACTION_TRAP: |
| dpsw_act->action = DPSW_ACL_ACTION_REDIRECT_TO_CTRL_IF; |
| break; |
| case FLOW_ACTION_REDIRECT: |
| if (!dpaa2_switch_port_dev_check(cls_act->dev)) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Destination not a DPAA2 switch port"); |
| return -EOPNOTSUPP; |
| } |
| |
| dpsw_act->if_id = dpaa2_switch_get_index(ethsw, cls_act->dev); |
| dpsw_act->action = DPSW_ACL_ACTION_REDIRECT; |
| break; |
| case FLOW_ACTION_DROP: |
| dpsw_act->action = DPSW_ACL_ACTION_DROP; |
| break; |
| default: |
| NL_SET_ERR_MSG_MOD(extack, |
| "Action not supported"); |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| out: |
| return err; |
| } |
| |
| static int |
| dpaa2_switch_block_add_mirror(struct dpaa2_switch_filter_block *block, |
| struct dpaa2_switch_mirror_entry *entry, |
| u16 to, struct netlink_ext_ack *extack) |
| { |
| unsigned long block_ports = block->ports; |
| struct ethsw_core *ethsw = block->ethsw; |
| struct ethsw_port_priv *port_priv; |
| unsigned long ports_added = 0; |
| u16 vlan = entry->cfg.vlan_id; |
| bool mirror_port_enabled; |
| int err, port; |
| |
| /* Setup the mirroring port */ |
| mirror_port_enabled = (ethsw->mirror_port != ethsw->sw_attr.num_ifs); |
| if (!mirror_port_enabled) { |
| err = dpsw_set_reflection_if(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, to); |
| if (err) |
| return err; |
| ethsw->mirror_port = to; |
| } |
| |
| /* Setup the same egress mirroring configuration on all the switch |
| * ports that share the same filter block. |
| */ |
| for_each_set_bit(port, &block_ports, ethsw->sw_attr.num_ifs) { |
| port_priv = ethsw->ports[port]; |
| |
| /* We cannot add a per VLAN mirroring rule if the VLAN in |
| * question is not installed on the switch port. |
| */ |
| if (entry->cfg.filter == DPSW_REFLECTION_FILTER_INGRESS_VLAN && |
| !(port_priv->vlans[vlan] & ETHSW_VLAN_MEMBER)) { |
| NL_SET_ERR_MSG(extack, |
| "VLAN must be installed on the switch port"); |
| err = -EINVAL; |
| goto err_remove_filters; |
| } |
| |
| err = dpsw_if_add_reflection(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, |
| port, &entry->cfg); |
| if (err) |
| goto err_remove_filters; |
| |
| ports_added |= BIT(port); |
| } |
| |
| list_add(&entry->list, &block->mirror_entries); |
| |
| return 0; |
| |
| err_remove_filters: |
| for_each_set_bit(port, &ports_added, ethsw->sw_attr.num_ifs) { |
| dpsw_if_remove_reflection(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| port, &entry->cfg); |
| } |
| |
| if (!mirror_port_enabled) |
| ethsw->mirror_port = ethsw->sw_attr.num_ifs; |
| |
| return err; |
| } |
| |
| static int |
| dpaa2_switch_block_remove_mirror(struct dpaa2_switch_filter_block *block, |
| struct dpaa2_switch_mirror_entry *entry) |
| { |
| struct dpsw_reflection_cfg *cfg = &entry->cfg; |
| unsigned long block_ports = block->ports; |
| struct ethsw_core *ethsw = block->ethsw; |
| int port; |
| |
| /* Remove this mirroring configuration from all the ports belonging to |
| * the filter block. |
| */ |
| for_each_set_bit(port, &block_ports, ethsw->sw_attr.num_ifs) |
| dpsw_if_remove_reflection(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| port, cfg); |
| |
| /* Also remove it from the list of mirror filters */ |
| list_del(&entry->list); |
| kfree(entry); |
| |
| /* If this was the last mirror filter, then unset the mirror port */ |
| if (list_empty(&block->mirror_entries)) |
| ethsw->mirror_port = ethsw->sw_attr.num_ifs; |
| |
| return 0; |
| } |
| |
| static int |
| dpaa2_switch_cls_flower_replace_acl(struct dpaa2_switch_filter_block *block, |
| struct flow_cls_offload *cls) |
| { |
| struct flow_rule *rule = flow_cls_offload_flow_rule(cls); |
| struct netlink_ext_ack *extack = cls->common.extack; |
| struct dpaa2_switch_acl_entry *acl_entry; |
| struct ethsw_core *ethsw = block->ethsw; |
| struct flow_action_entry *act; |
| int err; |
| |
| if (dpaa2_switch_acl_tbl_is_full(block)) { |
| NL_SET_ERR_MSG(extack, "Maximum filter capacity reached"); |
| return -ENOMEM; |
| } |
| |
| acl_entry = kzalloc(sizeof(*acl_entry), GFP_KERNEL); |
| if (!acl_entry) |
| return -ENOMEM; |
| |
| err = dpaa2_switch_flower_parse_key(cls, &acl_entry->key); |
| if (err) |
| goto free_acl_entry; |
| |
| act = &rule->action.entries[0]; |
| err = dpaa2_switch_tc_parse_action_acl(ethsw, act, |
| &acl_entry->cfg.result, extack); |
| if (err) |
| goto free_acl_entry; |
| |
| acl_entry->prio = cls->common.prio; |
| acl_entry->cookie = cls->cookie; |
| |
| err = dpaa2_switch_acl_tbl_add_entry(block, acl_entry); |
| if (err) |
| goto free_acl_entry; |
| |
| return 0; |
| |
| free_acl_entry: |
| kfree(acl_entry); |
| |
| return err; |
| } |
| |
| static int dpaa2_switch_flower_parse_mirror_key(struct flow_cls_offload *cls, |
| u16 *vlan) |
| { |
| struct flow_rule *rule = flow_cls_offload_flow_rule(cls); |
| struct flow_dissector *dissector = rule->match.dissector; |
| struct netlink_ext_ack *extack = cls->common.extack; |
| |
| if (dissector->used_keys & |
| ~(BIT(FLOW_DISSECTOR_KEY_BASIC) | |
| BIT(FLOW_DISSECTOR_KEY_CONTROL) | |
| BIT(FLOW_DISSECTOR_KEY_VLAN))) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Mirroring is supported only per VLAN"); |
| return -EOPNOTSUPP; |
| } |
| |
| if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { |
| struct flow_match_vlan match; |
| |
| flow_rule_match_vlan(rule, &match); |
| |
| if (match.mask->vlan_priority != 0 || |
| match.mask->vlan_dei != 0) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Only matching on VLAN ID supported"); |
| return -EOPNOTSUPP; |
| } |
| |
| if (match.mask->vlan_id != 0xFFF) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Masked matching not supported"); |
| return -EOPNOTSUPP; |
| } |
| |
| *vlan = (u16)match.key->vlan_id; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| dpaa2_switch_cls_flower_replace_mirror(struct dpaa2_switch_filter_block *block, |
| struct flow_cls_offload *cls) |
| { |
| struct netlink_ext_ack *extack = cls->common.extack; |
| struct dpaa2_switch_mirror_entry *mirror_entry; |
| struct ethsw_core *ethsw = block->ethsw; |
| struct dpaa2_switch_mirror_entry *tmp; |
| struct flow_action_entry *cls_act; |
| struct list_head *pos, *n; |
| bool mirror_port_enabled; |
| u16 if_id, vlan; |
| int err; |
| |
| mirror_port_enabled = (ethsw->mirror_port != ethsw->sw_attr.num_ifs); |
| cls_act = &cls->rule->action.entries[0]; |
| |
| /* Offload rules only when the destination is a DPAA2 switch port */ |
| if (!dpaa2_switch_port_dev_check(cls_act->dev)) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Destination not a DPAA2 switch port"); |
| return -EOPNOTSUPP; |
| } |
| if_id = dpaa2_switch_get_index(ethsw, cls_act->dev); |
| |
| /* We have a single mirror port but can configure egress mirroring on |
| * all the other switch ports. We need to allow mirroring rules only |
| * when the destination port is the same. |
| */ |
| if (mirror_port_enabled && ethsw->mirror_port != if_id) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Multiple mirror ports not supported"); |
| return -EBUSY; |
| } |
| |
| /* Parse the key */ |
| err = dpaa2_switch_flower_parse_mirror_key(cls, &vlan); |
| if (err) |
| return err; |
| |
| /* Make sure that we don't already have a mirror rule with the same |
| * configuration. |
| */ |
| list_for_each_safe(pos, n, &block->mirror_entries) { |
| tmp = list_entry(pos, struct dpaa2_switch_mirror_entry, list); |
| |
| if (tmp->cfg.filter == DPSW_REFLECTION_FILTER_INGRESS_VLAN && |
| tmp->cfg.vlan_id == vlan) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "VLAN mirror filter already installed"); |
| return -EBUSY; |
| } |
| } |
| |
| mirror_entry = kzalloc(sizeof(*mirror_entry), GFP_KERNEL); |
| if (!mirror_entry) |
| return -ENOMEM; |
| |
| mirror_entry->cfg.filter = DPSW_REFLECTION_FILTER_INGRESS_VLAN; |
| mirror_entry->cfg.vlan_id = vlan; |
| mirror_entry->cookie = cls->cookie; |
| |
| return dpaa2_switch_block_add_mirror(block, mirror_entry, if_id, |
| extack); |
| } |
| |
| int dpaa2_switch_cls_flower_replace(struct dpaa2_switch_filter_block *block, |
| struct flow_cls_offload *cls) |
| { |
| struct flow_rule *rule = flow_cls_offload_flow_rule(cls); |
| struct netlink_ext_ack *extack = cls->common.extack; |
| struct flow_action_entry *act; |
| |
| if (!flow_offload_has_one_action(&rule->action)) { |
| NL_SET_ERR_MSG(extack, "Only singular actions are supported"); |
| return -EOPNOTSUPP; |
| } |
| |
| act = &rule->action.entries[0]; |
| switch (act->id) { |
| case FLOW_ACTION_REDIRECT: |
| case FLOW_ACTION_TRAP: |
| case FLOW_ACTION_DROP: |
| return dpaa2_switch_cls_flower_replace_acl(block, cls); |
| case FLOW_ACTION_MIRRED: |
| return dpaa2_switch_cls_flower_replace_mirror(block, cls); |
| default: |
| NL_SET_ERR_MSG_MOD(extack, "Action not supported"); |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| int dpaa2_switch_cls_flower_destroy(struct dpaa2_switch_filter_block *block, |
| struct flow_cls_offload *cls) |
| { |
| struct dpaa2_switch_mirror_entry *mirror_entry; |
| struct dpaa2_switch_acl_entry *acl_entry; |
| |
| /* If this filter is a an ACL one, remove it */ |
| acl_entry = dpaa2_switch_acl_tbl_find_entry_by_cookie(block, |
| cls->cookie); |
| if (acl_entry) |
| return dpaa2_switch_acl_tbl_remove_entry(block, acl_entry); |
| |
| /* If not, then it has to be a mirror */ |
| mirror_entry = dpaa2_switch_mirror_find_entry_by_cookie(block, |
| cls->cookie); |
| if (mirror_entry) |
| return dpaa2_switch_block_remove_mirror(block, |
| mirror_entry); |
| |
| return 0; |
| } |
| |
| static int |
| dpaa2_switch_cls_matchall_replace_acl(struct dpaa2_switch_filter_block *block, |
| struct tc_cls_matchall_offload *cls) |
| { |
| struct netlink_ext_ack *extack = cls->common.extack; |
| struct ethsw_core *ethsw = block->ethsw; |
| struct dpaa2_switch_acl_entry *acl_entry; |
| struct flow_action_entry *act; |
| int err; |
| |
| if (dpaa2_switch_acl_tbl_is_full(block)) { |
| NL_SET_ERR_MSG(extack, "Maximum filter capacity reached"); |
| return -ENOMEM; |
| } |
| |
| acl_entry = kzalloc(sizeof(*acl_entry), GFP_KERNEL); |
| if (!acl_entry) |
| return -ENOMEM; |
| |
| act = &cls->rule->action.entries[0]; |
| err = dpaa2_switch_tc_parse_action_acl(ethsw, act, |
| &acl_entry->cfg.result, extack); |
| if (err) |
| goto free_acl_entry; |
| |
| acl_entry->prio = cls->common.prio; |
| acl_entry->cookie = cls->cookie; |
| |
| err = dpaa2_switch_acl_tbl_add_entry(block, acl_entry); |
| if (err) |
| goto free_acl_entry; |
| |
| return 0; |
| |
| free_acl_entry: |
| kfree(acl_entry); |
| |
| return err; |
| } |
| |
| static int |
| dpaa2_switch_cls_matchall_replace_mirror(struct dpaa2_switch_filter_block *block, |
| struct tc_cls_matchall_offload *cls) |
| { |
| struct netlink_ext_ack *extack = cls->common.extack; |
| struct dpaa2_switch_mirror_entry *mirror_entry; |
| struct ethsw_core *ethsw = block->ethsw; |
| struct dpaa2_switch_mirror_entry *tmp; |
| struct flow_action_entry *cls_act; |
| struct list_head *pos, *n; |
| bool mirror_port_enabled; |
| u16 if_id; |
| |
| mirror_port_enabled = (ethsw->mirror_port != ethsw->sw_attr.num_ifs); |
| cls_act = &cls->rule->action.entries[0]; |
| |
| /* Offload rules only when the destination is a DPAA2 switch port */ |
| if (!dpaa2_switch_port_dev_check(cls_act->dev)) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Destination not a DPAA2 switch port"); |
| return -EOPNOTSUPP; |
| } |
| if_id = dpaa2_switch_get_index(ethsw, cls_act->dev); |
| |
| /* We have a single mirror port but can configure egress mirroring on |
| * all the other switch ports. We need to allow mirroring rules only |
| * when the destination port is the same. |
| */ |
| if (mirror_port_enabled && ethsw->mirror_port != if_id) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Multiple mirror ports not supported"); |
| return -EBUSY; |
| } |
| |
| /* Make sure that we don't already have a mirror rule with the same |
| * configuration. One matchall rule per block is the maximum. |
| */ |
| list_for_each_safe(pos, n, &block->mirror_entries) { |
| tmp = list_entry(pos, struct dpaa2_switch_mirror_entry, list); |
| |
| if (tmp->cfg.filter == DPSW_REFLECTION_FILTER_INGRESS_ALL) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Matchall mirror filter already installed"); |
| return -EBUSY; |
| } |
| } |
| |
| mirror_entry = kzalloc(sizeof(*mirror_entry), GFP_KERNEL); |
| if (!mirror_entry) |
| return -ENOMEM; |
| |
| mirror_entry->cfg.filter = DPSW_REFLECTION_FILTER_INGRESS_ALL; |
| mirror_entry->cookie = cls->cookie; |
| |
| return dpaa2_switch_block_add_mirror(block, mirror_entry, if_id, |
| extack); |
| } |
| |
| int dpaa2_switch_cls_matchall_replace(struct dpaa2_switch_filter_block *block, |
| struct tc_cls_matchall_offload *cls) |
| { |
| struct netlink_ext_ack *extack = cls->common.extack; |
| struct flow_action_entry *act; |
| |
| if (!flow_offload_has_one_action(&cls->rule->action)) { |
| NL_SET_ERR_MSG(extack, "Only singular actions are supported"); |
| return -EOPNOTSUPP; |
| } |
| |
| act = &cls->rule->action.entries[0]; |
| switch (act->id) { |
| case FLOW_ACTION_REDIRECT: |
| case FLOW_ACTION_TRAP: |
| case FLOW_ACTION_DROP: |
| return dpaa2_switch_cls_matchall_replace_acl(block, cls); |
| case FLOW_ACTION_MIRRED: |
| return dpaa2_switch_cls_matchall_replace_mirror(block, cls); |
| default: |
| NL_SET_ERR_MSG_MOD(extack, "Action not supported"); |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| int dpaa2_switch_block_offload_mirror(struct dpaa2_switch_filter_block *block, |
| struct ethsw_port_priv *port_priv) |
| { |
| struct ethsw_core *ethsw = port_priv->ethsw_data; |
| struct dpaa2_switch_mirror_entry *tmp; |
| int err; |
| |
| list_for_each_entry(tmp, &block->mirror_entries, list) { |
| err = dpsw_if_add_reflection(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, |
| port_priv->idx, &tmp->cfg); |
| if (err) |
| goto unwind_add; |
| } |
| |
| return 0; |
| |
| unwind_add: |
| list_for_each_entry(tmp, &block->mirror_entries, list) |
| dpsw_if_remove_reflection(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, |
| port_priv->idx, &tmp->cfg); |
| |
| return err; |
| } |
| |
| int dpaa2_switch_block_unoffload_mirror(struct dpaa2_switch_filter_block *block, |
| struct ethsw_port_priv *port_priv) |
| { |
| struct ethsw_core *ethsw = port_priv->ethsw_data; |
| struct dpaa2_switch_mirror_entry *tmp; |
| int err; |
| |
| list_for_each_entry(tmp, &block->mirror_entries, list) { |
| err = dpsw_if_remove_reflection(ethsw->mc_io, 0, |
| ethsw->dpsw_handle, |
| port_priv->idx, &tmp->cfg); |
| if (err) |
| goto unwind_remove; |
| } |
| |
| return 0; |
| |
| unwind_remove: |
| list_for_each_entry(tmp, &block->mirror_entries, list) |
| dpsw_if_add_reflection(ethsw->mc_io, 0, ethsw->dpsw_handle, |
| port_priv->idx, &tmp->cfg); |
| |
| return err; |
| } |
| |
| int dpaa2_switch_cls_matchall_destroy(struct dpaa2_switch_filter_block *block, |
| struct tc_cls_matchall_offload *cls) |
| { |
| struct dpaa2_switch_mirror_entry *mirror_entry; |
| struct dpaa2_switch_acl_entry *acl_entry; |
| |
| /* If this filter is a an ACL one, remove it */ |
| acl_entry = dpaa2_switch_acl_tbl_find_entry_by_cookie(block, |
| cls->cookie); |
| if (acl_entry) |
| return dpaa2_switch_acl_tbl_remove_entry(block, |
| acl_entry); |
| |
| /* If not, then it has to be a mirror */ |
| mirror_entry = dpaa2_switch_mirror_find_entry_by_cookie(block, |
| cls->cookie); |
| if (mirror_entry) |
| return dpaa2_switch_block_remove_mirror(block, |
| mirror_entry); |
| |
| return 0; |
| } |