// SPDX-License-Identifier: (GPL-2.0 OR MIT)
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/* Microsemi Ocelot Switch driver
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* Copyright (c) 2019 Microsemi Corporation
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*/
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#include <net/pkt_cls.h>
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#include <net/tc_act/tc_gact.h>
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#include <soc/mscc/ocelot_vcap.h>
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#include "ocelot_vcap.h"
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/* Arbitrarily chosen constants for encoding the VCAP block and lookup number
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* into the chain number. This is UAPI.
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*/
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#define VCAP_BLOCK 10000
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#define VCAP_LOOKUP 1000
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#define VCAP_IS1_NUM_LOOKUPS 3
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#define VCAP_IS2_NUM_LOOKUPS 2
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#define VCAP_IS2_NUM_PAG 256
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#define VCAP_IS1_CHAIN(lookup) \
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(1 * VCAP_BLOCK + (lookup) * VCAP_LOOKUP)
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#define VCAP_IS2_CHAIN(lookup, pag) \
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(2 * VCAP_BLOCK + (lookup) * VCAP_LOOKUP + (pag))
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static int ocelot_chain_to_block(int chain, bool ingress)
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{
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int lookup, pag;
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if (!ingress) {
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if (chain == 0)
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return VCAP_ES0;
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return -EOPNOTSUPP;
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}
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/* Backwards compatibility with older, single-chain tc-flower
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* offload support in Ocelot
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*/
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if (chain == 0)
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return VCAP_IS2;
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for (lookup = 0; lookup < VCAP_IS1_NUM_LOOKUPS; lookup++)
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if (chain == VCAP_IS1_CHAIN(lookup))
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return VCAP_IS1;
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for (lookup = 0; lookup < VCAP_IS2_NUM_LOOKUPS; lookup++)
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for (pag = 0; pag < VCAP_IS2_NUM_PAG; pag++)
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if (chain == VCAP_IS2_CHAIN(lookup, pag))
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return VCAP_IS2;
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return -EOPNOTSUPP;
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}
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/* Caller must ensure this is a valid IS1 or IS2 chain first,
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* by calling ocelot_chain_to_block.
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*/
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static int ocelot_chain_to_lookup(int chain)
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{
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/* Backwards compatibility with older, single-chain tc-flower
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* offload support in Ocelot
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*/
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if (chain == 0)
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return 0;
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return (chain / VCAP_LOOKUP) % 10;
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}
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/* Caller must ensure this is a valid IS2 chain first,
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* by calling ocelot_chain_to_block.
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*/
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static int ocelot_chain_to_pag(int chain)
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{
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int lookup;
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/* Backwards compatibility with older, single-chain tc-flower
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* offload support in Ocelot
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*/
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if (chain == 0)
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return 0;
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lookup = ocelot_chain_to_lookup(chain);
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/* calculate PAG value as chain index relative to the first PAG */
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return chain - VCAP_IS2_CHAIN(lookup, 0);
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}
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static bool ocelot_is_goto_target_valid(int goto_target, int chain,
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bool ingress)
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{
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int pag;
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/* Can't offload GOTO in VCAP ES0 */
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if (!ingress)
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return (goto_target < 0);
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/* Non-optional GOTOs */
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if (chain == 0)
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/* VCAP IS1 can be skipped, either partially or completely */
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return (goto_target == VCAP_IS1_CHAIN(0) ||
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goto_target == VCAP_IS1_CHAIN(1) ||
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goto_target == VCAP_IS1_CHAIN(2) ||
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goto_target == VCAP_IS2_CHAIN(0, 0) ||
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goto_target == VCAP_IS2_CHAIN(1, 0));
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if (chain == VCAP_IS1_CHAIN(0))
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return (goto_target == VCAP_IS1_CHAIN(1));
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if (chain == VCAP_IS1_CHAIN(1))
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return (goto_target == VCAP_IS1_CHAIN(2));
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/* Lookup 2 of VCAP IS1 can really support non-optional GOTOs,
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* using a Policy Association Group (PAG) value, which is an 8-bit
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* value encoding a VCAP IS2 target chain.
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*/
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if (chain == VCAP_IS1_CHAIN(2)) {
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for (pag = 0; pag < VCAP_IS2_NUM_PAG; pag++)
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if (goto_target == VCAP_IS2_CHAIN(0, pag))
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return true;
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return false;
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}
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/* Non-optional GOTO from VCAP IS2 lookup 0 to lookup 1.
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* We cannot change the PAG at this point.
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*/
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for (pag = 0; pag < VCAP_IS2_NUM_PAG; pag++)
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if (chain == VCAP_IS2_CHAIN(0, pag))
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return (goto_target == VCAP_IS2_CHAIN(1, pag));
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/* VCAP IS2 lookup 1 cannot jump anywhere */
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return false;
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}
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static struct ocelot_vcap_filter *
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ocelot_find_vcap_filter_that_points_at(struct ocelot *ocelot, int chain)
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{
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struct ocelot_vcap_filter *filter;
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struct ocelot_vcap_block *block;
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int block_id;
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block_id = ocelot_chain_to_block(chain, true);
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if (block_id < 0)
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return NULL;
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if (block_id == VCAP_IS2) {
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block = &ocelot->block[VCAP_IS1];
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list_for_each_entry(filter, &block->rules, list)
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if (filter->type == OCELOT_VCAP_FILTER_PAG &&
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filter->goto_target == chain)
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return filter;
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}
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list_for_each_entry(filter, &ocelot->dummy_rules, list)
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if (filter->goto_target == chain)
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return filter;
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return NULL;
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}
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static int ocelot_flower_parse_action(struct ocelot *ocelot, int port,
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bool ingress, struct flow_cls_offload *f,
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struct ocelot_vcap_filter *filter)
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{
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struct ocelot_port *ocelot_port = ocelot->ports[port];
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struct netlink_ext_ack *extack = f->common.extack;
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bool allow_missing_goto_target = false;
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const struct flow_action_entry *a;
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enum ocelot_tag_tpid_sel tpid;
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int i, chain, egress_port;
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u64 rate;
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if (!flow_action_basic_hw_stats_check(&f->rule->action,
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f->common.extack))
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return -EOPNOTSUPP;
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chain = f->common.chain_index;
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filter->block_id = ocelot_chain_to_block(chain, ingress);
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if (filter->block_id < 0) {
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NL_SET_ERR_MSG_MOD(extack, "Cannot offload to this chain");
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return -EOPNOTSUPP;
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}
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if (filter->block_id == VCAP_IS1 || filter->block_id == VCAP_IS2)
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filter->lookup = ocelot_chain_to_lookup(chain);
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if (filter->block_id == VCAP_IS2)
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filter->pag = ocelot_chain_to_pag(chain);
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filter->goto_target = -1;
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filter->type = OCELOT_VCAP_FILTER_DUMMY;
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flow_action_for_each(i, a, &f->rule->action) {
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switch (a->id) {
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case FLOW_ACTION_DROP:
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if (filter->block_id != VCAP_IS2) {
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NL_SET_ERR_MSG_MOD(extack,
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"Drop action can only be offloaded to VCAP IS2");
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return -EOPNOTSUPP;
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}
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if (filter->goto_target != -1) {
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NL_SET_ERR_MSG_MOD(extack,
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"Last action must be GOTO");
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return -EOPNOTSUPP;
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}
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filter->action.mask_mode = OCELOT_MASK_MODE_PERMIT_DENY;
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filter->action.port_mask = 0;
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filter->action.police_ena = true;
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filter->action.pol_ix = OCELOT_POLICER_DISCARD;
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filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
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break;
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case FLOW_ACTION_TRAP:
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if (filter->block_id != VCAP_IS2 ||
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filter->lookup != 0) {
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NL_SET_ERR_MSG_MOD(extack,
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"Trap action can only be offloaded to VCAP IS2 lookup 0");
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return -EOPNOTSUPP;
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}
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if (filter->goto_target != -1) {
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NL_SET_ERR_MSG_MOD(extack,
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"Last action must be GOTO");
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return -EOPNOTSUPP;
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}
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filter->action.mask_mode = OCELOT_MASK_MODE_PERMIT_DENY;
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filter->action.port_mask = 0;
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filter->action.cpu_copy_ena = true;
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filter->action.cpu_qu_num = 0;
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filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
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break;
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case FLOW_ACTION_POLICE:
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if (filter->block_id != VCAP_IS2 ||
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filter->lookup != 0) {
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NL_SET_ERR_MSG_MOD(extack,
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"Police action can only be offloaded to VCAP IS2 lookup 0");
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return -EOPNOTSUPP;
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}
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if (filter->goto_target != -1) {
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NL_SET_ERR_MSG_MOD(extack,
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"Last action must be GOTO");
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return -EOPNOTSUPP;
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}
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filter->action.police_ena = true;
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rate = a->police.rate_bytes_ps;
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filter->action.pol.rate = div_u64(rate, 1000) * 8;
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filter->action.pol.burst = a->police.burst;
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filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
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break;
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case FLOW_ACTION_REDIRECT:
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if (filter->block_id != VCAP_IS2) {
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NL_SET_ERR_MSG_MOD(extack,
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"Redirect action can only be offloaded to VCAP IS2");
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return -EOPNOTSUPP;
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}
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if (filter->goto_target != -1) {
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NL_SET_ERR_MSG_MOD(extack,
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"Last action must be GOTO");
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return -EOPNOTSUPP;
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}
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egress_port = ocelot->ops->netdev_to_port(a->dev);
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if (egress_port < 0) {
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NL_SET_ERR_MSG_MOD(extack,
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"Destination not an ocelot port");
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return -EOPNOTSUPP;
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}
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filter->action.mask_mode = OCELOT_MASK_MODE_REDIRECT;
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filter->action.port_mask = BIT(egress_port);
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filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
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break;
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case FLOW_ACTION_VLAN_POP:
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if (filter->block_id != VCAP_IS1) {
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NL_SET_ERR_MSG_MOD(extack,
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"VLAN pop action can only be offloaded to VCAP IS1");
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return -EOPNOTSUPP;
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}
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if (filter->goto_target != -1) {
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NL_SET_ERR_MSG_MOD(extack,
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"Last action must be GOTO");
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return -EOPNOTSUPP;
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}
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filter->action.vlan_pop_cnt_ena = true;
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filter->action.vlan_pop_cnt++;
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if (filter->action.vlan_pop_cnt > 2) {
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NL_SET_ERR_MSG_MOD(extack,
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"Cannot pop more than 2 VLAN headers");
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return -EOPNOTSUPP;
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}
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filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
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break;
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case FLOW_ACTION_VLAN_MANGLE:
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if (filter->block_id != VCAP_IS1) {
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NL_SET_ERR_MSG_MOD(extack,
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"VLAN modify action can only be offloaded to VCAP IS1");
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return -EOPNOTSUPP;
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}
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if (filter->goto_target != -1) {
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NL_SET_ERR_MSG_MOD(extack,
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"Last action must be GOTO");
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return -EOPNOTSUPP;
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}
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if (!ocelot_port->vlan_aware) {
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NL_SET_ERR_MSG_MOD(extack,
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"Can only modify VLAN under VLAN aware bridge");
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return -EOPNOTSUPP;
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}
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filter->action.vid_replace_ena = true;
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filter->action.pcp_dei_ena = true;
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filter->action.vid = a->vlan.vid;
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filter->action.pcp = a->vlan.prio;
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filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
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break;
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case FLOW_ACTION_PRIORITY:
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if (filter->block_id != VCAP_IS1) {
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NL_SET_ERR_MSG_MOD(extack,
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"Priority action can only be offloaded to VCAP IS1");
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return -EOPNOTSUPP;
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}
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if (filter->goto_target != -1) {
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NL_SET_ERR_MSG_MOD(extack,
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"Last action must be GOTO");
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return -EOPNOTSUPP;
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}
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filter->action.qos_ena = true;
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filter->action.qos_val = a->priority;
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filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
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break;
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case FLOW_ACTION_GOTO:
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filter->goto_target = a->chain_index;
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if (filter->block_id == VCAP_IS1 && filter->lookup == 2) {
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int pag = ocelot_chain_to_pag(filter->goto_target);
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filter->action.pag_override_mask = 0xff;
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filter->action.pag_val = pag;
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filter->type = OCELOT_VCAP_FILTER_PAG;
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}
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break;
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case FLOW_ACTION_VLAN_PUSH:
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if (filter->block_id != VCAP_ES0) {
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NL_SET_ERR_MSG_MOD(extack,
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"VLAN push action can only be offloaded to VCAP ES0");
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return -EOPNOTSUPP;
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}
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switch (ntohs(a->vlan.proto)) {
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case ETH_P_8021Q:
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tpid = OCELOT_TAG_TPID_SEL_8021Q;
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break;
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case ETH_P_8021AD:
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tpid = OCELOT_TAG_TPID_SEL_8021AD;
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break;
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default:
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NL_SET_ERR_MSG_MOD(extack,
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"Cannot push custom TPID");
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return -EOPNOTSUPP;
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}
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filter->action.tag_a_tpid_sel = tpid;
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filter->action.push_outer_tag = OCELOT_ES0_TAG;
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filter->action.tag_a_vid_sel = 1;
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filter->action.vid_a_val = a->vlan.vid;
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filter->action.pcp_a_val = a->vlan.prio;
|
filter->type = OCELOT_VCAP_FILTER_OFFLOAD;
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break;
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default:
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NL_SET_ERR_MSG_MOD(extack, "Cannot offload action");
|
return -EOPNOTSUPP;
|
}
|
}
|
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if (filter->goto_target == -1) {
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if ((filter->block_id == VCAP_IS2 && filter->lookup == 1) ||
|
chain == 0) {
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allow_missing_goto_target = true;
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} else {
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NL_SET_ERR_MSG_MOD(extack, "Missing GOTO action");
|
return -EOPNOTSUPP;
|
}
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}
|
|
if (!ocelot_is_goto_target_valid(filter->goto_target, chain, ingress) &&
|
!allow_missing_goto_target) {
|
NL_SET_ERR_MSG_MOD(extack, "Cannot offload this GOTO target");
|
return -EOPNOTSUPP;
|
}
|
|
return 0;
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}
|
|
static int ocelot_flower_parse_indev(struct ocelot *ocelot, int port,
|
struct flow_cls_offload *f,
|
struct ocelot_vcap_filter *filter)
|
{
|
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
|
const struct vcap_props *vcap = &ocelot->vcap[VCAP_ES0];
|
int key_length = vcap->keys[VCAP_ES0_IGR_PORT].length;
|
struct netlink_ext_ack *extack = f->common.extack;
|
struct net_device *dev, *indev;
|
struct flow_match_meta match;
|
int ingress_port;
|
|
flow_rule_match_meta(rule, &match);
|
|
if (!match.mask->ingress_ifindex)
|
return 0;
|
|
if (match.mask->ingress_ifindex != 0xFFFFFFFF) {
|
NL_SET_ERR_MSG_MOD(extack, "Unsupported ingress ifindex mask");
|
return -EOPNOTSUPP;
|
}
|
|
dev = ocelot->ops->port_to_netdev(ocelot, port);
|
if (!dev)
|
return -EINVAL;
|
|
indev = __dev_get_by_index(dev_net(dev), match.key->ingress_ifindex);
|
if (!indev) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Can't find the ingress port to match on");
|
return -ENOENT;
|
}
|
|
ingress_port = ocelot->ops->netdev_to_port(indev);
|
if (ingress_port < 0) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Can only offload an ocelot ingress port");
|
return -EOPNOTSUPP;
|
}
|
if (ingress_port == port) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Ingress port is equal to the egress port");
|
return -EINVAL;
|
}
|
|
filter->ingress_port.value = ingress_port;
|
filter->ingress_port.mask = GENMASK(key_length - 1, 0);
|
|
return 0;
|
}
|
|
static int
|
ocelot_flower_parse_key(struct ocelot *ocelot, int port, bool ingress,
|
struct flow_cls_offload *f,
|
struct ocelot_vcap_filter *filter)
|
{
|
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
|
struct flow_dissector *dissector = rule->match.dissector;
|
struct netlink_ext_ack *extack = f->common.extack;
|
u16 proto = ntohs(f->common.protocol);
|
bool match_protocol = true;
|
int ret;
|
|
if (dissector->used_keys &
|
~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
|
BIT(FLOW_DISSECTOR_KEY_BASIC) |
|
BIT(FLOW_DISSECTOR_KEY_META) |
|
BIT(FLOW_DISSECTOR_KEY_PORTS) |
|
BIT(FLOW_DISSECTOR_KEY_VLAN) |
|
BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS))) {
|
return -EOPNOTSUPP;
|
}
|
|
/* For VCAP ES0 (egress rewriter) we can match on the ingress port */
|
if (!ingress) {
|
ret = ocelot_flower_parse_indev(ocelot, port, f, filter);
|
if (ret)
|
return ret;
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
|
struct flow_match_control match;
|
|
flow_rule_match_control(rule, &match);
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
|
struct flow_match_eth_addrs match;
|
|
if (filter->block_id == VCAP_ES0) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"VCAP ES0 cannot match on MAC address");
|
return -EOPNOTSUPP;
|
}
|
|
/* The hw support mac matches only for MAC_ETYPE key,
|
* therefore if other matches(port, tcp flags, etc) are added
|
* then just bail out
|
*/
|
if ((dissector->used_keys &
|
(BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_BASIC) |
|
BIT(FLOW_DISSECTOR_KEY_CONTROL))) !=
|
(BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_BASIC) |
|
BIT(FLOW_DISSECTOR_KEY_CONTROL)))
|
return -EOPNOTSUPP;
|
|
flow_rule_match_eth_addrs(rule, &match);
|
|
if (filter->block_id == VCAP_IS1 &&
|
!is_zero_ether_addr(match.mask->dst)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Key type S1_NORMAL cannot match on destination MAC");
|
return -EOPNOTSUPP;
|
}
|
|
filter->key_type = OCELOT_VCAP_KEY_ETYPE;
|
ether_addr_copy(filter->key.etype.dmac.value,
|
match.key->dst);
|
ether_addr_copy(filter->key.etype.smac.value,
|
match.key->src);
|
ether_addr_copy(filter->key.etype.dmac.mask,
|
match.mask->dst);
|
ether_addr_copy(filter->key.etype.smac.mask,
|
match.mask->src);
|
goto finished_key_parsing;
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
|
struct flow_match_basic match;
|
|
flow_rule_match_basic(rule, &match);
|
if (ntohs(match.key->n_proto) == ETH_P_IP) {
|
if (filter->block_id == VCAP_ES0) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"VCAP ES0 cannot match on IP protocol");
|
return -EOPNOTSUPP;
|
}
|
|
filter->key_type = OCELOT_VCAP_KEY_IPV4;
|
filter->key.ipv4.proto.value[0] =
|
match.key->ip_proto;
|
filter->key.ipv4.proto.mask[0] =
|
match.mask->ip_proto;
|
match_protocol = false;
|
}
|
if (ntohs(match.key->n_proto) == ETH_P_IPV6) {
|
if (filter->block_id == VCAP_ES0) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"VCAP ES0 cannot match on IP protocol");
|
return -EOPNOTSUPP;
|
}
|
|
filter->key_type = OCELOT_VCAP_KEY_IPV6;
|
filter->key.ipv6.proto.value[0] =
|
match.key->ip_proto;
|
filter->key.ipv6.proto.mask[0] =
|
match.mask->ip_proto;
|
match_protocol = false;
|
}
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV4_ADDRS) &&
|
proto == ETH_P_IP) {
|
struct flow_match_ipv4_addrs match;
|
u8 *tmp;
|
|
if (filter->block_id == VCAP_ES0) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"VCAP ES0 cannot match on IP address");
|
return -EOPNOTSUPP;
|
}
|
|
flow_rule_match_ipv4_addrs(rule, &match);
|
|
if (filter->block_id == VCAP_IS1 && *(u32 *)&match.mask->dst) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Key type S1_NORMAL cannot match on destination IP");
|
return -EOPNOTSUPP;
|
}
|
|
tmp = &filter->key.ipv4.sip.value.addr[0];
|
memcpy(tmp, &match.key->src, 4);
|
|
tmp = &filter->key.ipv4.sip.mask.addr[0];
|
memcpy(tmp, &match.mask->src, 4);
|
|
tmp = &filter->key.ipv4.dip.value.addr[0];
|
memcpy(tmp, &match.key->dst, 4);
|
|
tmp = &filter->key.ipv4.dip.mask.addr[0];
|
memcpy(tmp, &match.mask->dst, 4);
|
match_protocol = false;
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV6_ADDRS) &&
|
proto == ETH_P_IPV6) {
|
return -EOPNOTSUPP;
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
|
struct flow_match_ports match;
|
|
if (filter->block_id == VCAP_ES0) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"VCAP ES0 cannot match on L4 ports");
|
return -EOPNOTSUPP;
|
}
|
|
flow_rule_match_ports(rule, &match);
|
filter->key.ipv4.sport.value = ntohs(match.key->src);
|
filter->key.ipv4.sport.mask = ntohs(match.mask->src);
|
filter->key.ipv4.dport.value = ntohs(match.key->dst);
|
filter->key.ipv4.dport.mask = ntohs(match.mask->dst);
|
match_protocol = false;
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
|
struct flow_match_vlan match;
|
|
flow_rule_match_vlan(rule, &match);
|
filter->key_type = OCELOT_VCAP_KEY_ANY;
|
filter->vlan.vid.value = match.key->vlan_id;
|
filter->vlan.vid.mask = match.mask->vlan_id;
|
filter->vlan.pcp.value[0] = match.key->vlan_priority;
|
filter->vlan.pcp.mask[0] = match.mask->vlan_priority;
|
match_protocol = false;
|
}
|
|
finished_key_parsing:
|
if (match_protocol && proto != ETH_P_ALL) {
|
if (filter->block_id == VCAP_ES0) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"VCAP ES0 cannot match on L2 proto");
|
return -EOPNOTSUPP;
|
}
|
|
/* TODO: support SNAP, LLC etc */
|
if (proto < ETH_P_802_3_MIN)
|
return -EOPNOTSUPP;
|
filter->key_type = OCELOT_VCAP_KEY_ETYPE;
|
*(__be16 *)filter->key.etype.etype.value = htons(proto);
|
*(__be16 *)filter->key.etype.etype.mask = htons(0xffff);
|
}
|
/* else, a filter of type OCELOT_VCAP_KEY_ANY is implicitly added */
|
|
return 0;
|
}
|
|
static int ocelot_flower_parse(struct ocelot *ocelot, int port, bool ingress,
|
struct flow_cls_offload *f,
|
struct ocelot_vcap_filter *filter)
|
{
|
int ret;
|
|
filter->prio = f->common.prio;
|
filter->id = f->cookie;
|
|
ret = ocelot_flower_parse_action(ocelot, port, ingress, f, filter);
|
if (ret)
|
return ret;
|
|
return ocelot_flower_parse_key(ocelot, port, ingress, f, filter);
|
}
|
|
static struct ocelot_vcap_filter
|
*ocelot_vcap_filter_create(struct ocelot *ocelot, int port, bool ingress,
|
struct flow_cls_offload *f)
|
{
|
struct ocelot_vcap_filter *filter;
|
|
filter = kzalloc(sizeof(*filter), GFP_KERNEL);
|
if (!filter)
|
return NULL;
|
|
if (ingress) {
|
filter->ingress_port_mask = BIT(port);
|
} else {
|
const struct vcap_props *vcap = &ocelot->vcap[VCAP_ES0];
|
int key_length = vcap->keys[VCAP_ES0_EGR_PORT].length;
|
|
filter->egress_port.value = port;
|
filter->egress_port.mask = GENMASK(key_length - 1, 0);
|
}
|
|
return filter;
|
}
|
|
static int ocelot_vcap_dummy_filter_add(struct ocelot *ocelot,
|
struct ocelot_vcap_filter *filter)
|
{
|
list_add(&filter->list, &ocelot->dummy_rules);
|
|
return 0;
|
}
|
|
static int ocelot_vcap_dummy_filter_del(struct ocelot *ocelot,
|
struct ocelot_vcap_filter *filter)
|
{
|
list_del(&filter->list);
|
kfree(filter);
|
|
return 0;
|
}
|
|
int ocelot_cls_flower_replace(struct ocelot *ocelot, int port,
|
struct flow_cls_offload *f, bool ingress)
|
{
|
struct netlink_ext_ack *extack = f->common.extack;
|
struct ocelot_vcap_filter *filter;
|
int chain = f->common.chain_index;
|
int ret;
|
|
if (chain && !ocelot_find_vcap_filter_that_points_at(ocelot, chain)) {
|
NL_SET_ERR_MSG_MOD(extack, "No default GOTO action points to this chain");
|
return -EOPNOTSUPP;
|
}
|
|
filter = ocelot_vcap_filter_create(ocelot, port, ingress, f);
|
if (!filter)
|
return -ENOMEM;
|
|
ret = ocelot_flower_parse(ocelot, port, ingress, f, filter);
|
if (ret) {
|
kfree(filter);
|
return ret;
|
}
|
|
/* The non-optional GOTOs for the TCAM skeleton don't need
|
* to be actually offloaded.
|
*/
|
if (filter->type == OCELOT_VCAP_FILTER_DUMMY)
|
return ocelot_vcap_dummy_filter_add(ocelot, filter);
|
|
return ocelot_vcap_filter_add(ocelot, filter, f->common.extack);
|
}
|
EXPORT_SYMBOL_GPL(ocelot_cls_flower_replace);
|
|
int ocelot_cls_flower_destroy(struct ocelot *ocelot, int port,
|
struct flow_cls_offload *f, bool ingress)
|
{
|
struct ocelot_vcap_filter *filter;
|
struct ocelot_vcap_block *block;
|
int block_id;
|
|
block_id = ocelot_chain_to_block(f->common.chain_index, ingress);
|
if (block_id < 0)
|
return 0;
|
|
block = &ocelot->block[block_id];
|
|
filter = ocelot_vcap_block_find_filter_by_id(block, f->cookie);
|
if (!filter)
|
return 0;
|
|
if (filter->type == OCELOT_VCAP_FILTER_DUMMY)
|
return ocelot_vcap_dummy_filter_del(ocelot, filter);
|
|
return ocelot_vcap_filter_del(ocelot, filter);
|
}
|
EXPORT_SYMBOL_GPL(ocelot_cls_flower_destroy);
|
|
int ocelot_cls_flower_stats(struct ocelot *ocelot, int port,
|
struct flow_cls_offload *f, bool ingress)
|
{
|
struct ocelot_vcap_filter *filter;
|
struct ocelot_vcap_block *block;
|
int block_id, ret;
|
|
block_id = ocelot_chain_to_block(f->common.chain_index, ingress);
|
if (block_id < 0)
|
return 0;
|
|
block = &ocelot->block[block_id];
|
|
filter = ocelot_vcap_block_find_filter_by_id(block, f->cookie);
|
if (!filter || filter->type == OCELOT_VCAP_FILTER_DUMMY)
|
return 0;
|
|
ret = ocelot_vcap_filter_stats_update(ocelot, filter);
|
if (ret)
|
return ret;
|
|
flow_stats_update(&f->stats, 0x0, filter->stats.pkts, 0, 0x0,
|
FLOW_ACTION_HW_STATS_IMMEDIATE);
|
return 0;
|
}
|
EXPORT_SYMBOL_GPL(ocelot_cls_flower_stats);
|
