blob: d6eefbbf163fa1517fe9137be9bb73e1df95185b [file] [log] [blame]
// 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;
}