diff options
Diffstat (limited to 'drivers/net/ethernet/mscc/ocelot_tc.c')
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot_tc.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot_tc.c b/drivers/net/ethernet/mscc/ocelot_tc.c deleted file mode 100644 index b7baf7624e18..000000000000 --- a/drivers/net/ethernet/mscc/ocelot_tc.c +++ /dev/null @@ -1,179 +0,0 @@ -// SPDX-License-Identifier: (GPL-2.0 OR MIT) -/* Microsemi Ocelot Switch TC driver - * - * Copyright (c) 2019 Microsemi Corporation - */ - -#include <soc/mscc/ocelot.h> -#include "ocelot_tc.h" -#include "ocelot_ace.h" -#include <net/pkt_cls.h> - -static int ocelot_setup_tc_cls_matchall(struct ocelot_port_private *priv, - struct tc_cls_matchall_offload *f, - bool ingress) -{ - struct netlink_ext_ack *extack = f->common.extack; - struct ocelot *ocelot = priv->port.ocelot; - struct ocelot_policer pol = { 0 }; - struct flow_action_entry *action; - int port = priv->chip_port; - int err; - - if (!ingress) { - NL_SET_ERR_MSG_MOD(extack, "Only ingress is supported"); - return -EOPNOTSUPP; - } - - switch (f->command) { - case TC_CLSMATCHALL_REPLACE: - if (!flow_offload_has_one_action(&f->rule->action)) { - NL_SET_ERR_MSG_MOD(extack, - "Only one action is supported"); - return -EOPNOTSUPP; - } - - if (priv->tc.block_shared) { - NL_SET_ERR_MSG_MOD(extack, - "Rate limit is not supported on shared blocks"); - return -EOPNOTSUPP; - } - - action = &f->rule->action.entries[0]; - - if (action->id != FLOW_ACTION_POLICE) { - NL_SET_ERR_MSG_MOD(extack, "Unsupported action"); - return -EOPNOTSUPP; - } - - if (priv->tc.police_id && priv->tc.police_id != f->cookie) { - NL_SET_ERR_MSG_MOD(extack, - "Only one policer per port is supported"); - return -EEXIST; - } - - pol.rate = (u32)div_u64(action->police.rate_bytes_ps, 1000) * 8; - pol.burst = (u32)div_u64(action->police.rate_bytes_ps * - PSCHED_NS2TICKS(action->police.burst), - PSCHED_TICKS_PER_SEC); - - err = ocelot_port_policer_add(ocelot, port, &pol); - if (err) { - NL_SET_ERR_MSG_MOD(extack, "Could not add policer"); - return err; - } - - priv->tc.police_id = f->cookie; - priv->tc.offload_cnt++; - return 0; - case TC_CLSMATCHALL_DESTROY: - if (priv->tc.police_id != f->cookie) - return -ENOENT; - - err = ocelot_port_policer_del(ocelot, port); - if (err) { - NL_SET_ERR_MSG_MOD(extack, - "Could not delete policer"); - return err; - } - priv->tc.police_id = 0; - priv->tc.offload_cnt--; - return 0; - case TC_CLSMATCHALL_STATS: /* fall through */ - default: - return -EOPNOTSUPP; - } -} - -static int ocelot_setup_tc_block_cb(enum tc_setup_type type, - void *type_data, - void *cb_priv, bool ingress) -{ - struct ocelot_port_private *priv = cb_priv; - - if (!tc_cls_can_offload_and_chain0(priv->dev, type_data)) - return -EOPNOTSUPP; - - switch (type) { - case TC_SETUP_CLSMATCHALL: - return ocelot_setup_tc_cls_matchall(priv, type_data, ingress); - case TC_SETUP_CLSFLOWER: - return ocelot_setup_tc_cls_flower(priv, type_data, ingress); - default: - return -EOPNOTSUPP; - } -} - -static int ocelot_setup_tc_block_cb_ig(enum tc_setup_type type, - void *type_data, - void *cb_priv) -{ - return ocelot_setup_tc_block_cb(type, type_data, - cb_priv, true); -} - -static int ocelot_setup_tc_block_cb_eg(enum tc_setup_type type, - void *type_data, - void *cb_priv) -{ - return ocelot_setup_tc_block_cb(type, type_data, - cb_priv, false); -} - -static LIST_HEAD(ocelot_block_cb_list); - -static int ocelot_setup_tc_block(struct ocelot_port_private *priv, - struct flow_block_offload *f) -{ - struct flow_block_cb *block_cb; - flow_setup_cb_t *cb; - - if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) { - cb = ocelot_setup_tc_block_cb_ig; - priv->tc.block_shared = f->block_shared; - } else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) { - cb = ocelot_setup_tc_block_cb_eg; - } else { - return -EOPNOTSUPP; - } - - f->driver_block_list = &ocelot_block_cb_list; - - switch (f->command) { - case FLOW_BLOCK_BIND: - if (flow_block_cb_is_busy(cb, priv, &ocelot_block_cb_list)) - return -EBUSY; - - block_cb = flow_block_cb_alloc(cb, priv, priv, NULL); - if (IS_ERR(block_cb)) - return PTR_ERR(block_cb); - - flow_block_cb_add(block_cb, f); - list_add_tail(&block_cb->driver_list, f->driver_block_list); - return 0; - case FLOW_BLOCK_UNBIND: - block_cb = flow_block_cb_lookup(f->block, cb, priv); - if (!block_cb) - return -ENOENT; - - flow_block_cb_remove(block_cb, f); - list_del(&block_cb->driver_list); - return 0; - default: - return -EOPNOTSUPP; - } -} - -int ocelot_setup_tc(struct net_device *dev, enum tc_setup_type type, - void *type_data) -{ - struct ocelot_port_private *priv = netdev_priv(dev); - - switch (type) { - case TC_SETUP_BLOCK: - return ocelot_setup_tc_block(priv, type_data); - default: - return -EOPNOTSUPP; - } - return 0; -} |