803 lines
23 KiB
C
803 lines
23 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright 2020 NXP
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*/
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#include <net/tc_act/tc_gate.h>
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#include <linux/dsa/8021q.h>
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#include "sja1105_vl.h"
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#define SJA1105_SIZE_VL_STATUS 8
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/* Insert into the global gate list, sorted by gate action time. */
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static int sja1105_insert_gate_entry(struct sja1105_gating_config *gating_cfg,
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struct sja1105_rule *rule,
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u8 gate_state, s64 entry_time,
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struct netlink_ext_ack *extack)
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{
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struct sja1105_gate_entry *e;
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int rc;
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e = kzalloc(sizeof(*e), GFP_KERNEL);
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if (!e)
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return -ENOMEM;
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e->rule = rule;
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e->gate_state = gate_state;
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e->interval = entry_time;
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if (list_empty(&gating_cfg->entries)) {
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list_add(&e->list, &gating_cfg->entries);
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} else {
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struct sja1105_gate_entry *p;
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list_for_each_entry(p, &gating_cfg->entries, list) {
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if (p->interval == e->interval) {
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NL_SET_ERR_MSG_MOD(extack,
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"Gate conflict");
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rc = -EBUSY;
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goto err;
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}
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if (e->interval < p->interval)
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break;
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}
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list_add(&e->list, p->list.prev);
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}
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gating_cfg->num_entries++;
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return 0;
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err:
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kfree(e);
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return rc;
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}
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/* The gate entries contain absolute times in their e->interval field. Convert
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* that to proper intervals (i.e. "0, 5, 10, 15" to "5, 5, 5, 5").
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*/
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static void
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sja1105_gating_cfg_time_to_interval(struct sja1105_gating_config *gating_cfg,
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u64 cycle_time)
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{
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struct sja1105_gate_entry *last_e;
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struct sja1105_gate_entry *e;
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struct list_head *prev;
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list_for_each_entry(e, &gating_cfg->entries, list) {
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struct sja1105_gate_entry *p;
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prev = e->list.prev;
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if (prev == &gating_cfg->entries)
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continue;
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p = list_entry(prev, struct sja1105_gate_entry, list);
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p->interval = e->interval - p->interval;
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}
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last_e = list_last_entry(&gating_cfg->entries,
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struct sja1105_gate_entry, list);
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last_e->interval = cycle_time - last_e->interval;
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}
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static void sja1105_free_gating_config(struct sja1105_gating_config *gating_cfg)
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{
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struct sja1105_gate_entry *e, *n;
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list_for_each_entry_safe(e, n, &gating_cfg->entries, list) {
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list_del(&e->list);
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kfree(e);
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}
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}
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static int sja1105_compose_gating_subschedule(struct sja1105_private *priv,
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struct netlink_ext_ack *extack)
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{
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struct sja1105_gating_config *gating_cfg = &priv->tas_data.gating_cfg;
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struct sja1105_rule *rule;
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s64 max_cycle_time = 0;
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s64 its_base_time = 0;
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int i, rc = 0;
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sja1105_free_gating_config(gating_cfg);
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list_for_each_entry(rule, &priv->flow_block.rules, list) {
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if (rule->type != SJA1105_RULE_VL)
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continue;
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if (rule->vl.type != SJA1105_VL_TIME_TRIGGERED)
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continue;
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if (max_cycle_time < rule->vl.cycle_time) {
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max_cycle_time = rule->vl.cycle_time;
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its_base_time = rule->vl.base_time;
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}
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}
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if (!max_cycle_time)
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return 0;
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dev_dbg(priv->ds->dev, "max_cycle_time %lld its_base_time %lld\n",
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max_cycle_time, its_base_time);
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gating_cfg->base_time = its_base_time;
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gating_cfg->cycle_time = max_cycle_time;
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gating_cfg->num_entries = 0;
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list_for_each_entry(rule, &priv->flow_block.rules, list) {
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s64 time;
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s64 rbt;
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if (rule->type != SJA1105_RULE_VL)
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continue;
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if (rule->vl.type != SJA1105_VL_TIME_TRIGGERED)
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continue;
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/* Calculate the difference between this gating schedule's
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* base time, and the base time of the gating schedule with the
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* longest cycle time. We call it the relative base time (rbt).
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*/
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rbt = future_base_time(rule->vl.base_time, rule->vl.cycle_time,
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its_base_time);
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rbt -= its_base_time;
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time = rbt;
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for (i = 0; i < rule->vl.num_entries; i++) {
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u8 gate_state = rule->vl.entries[i].gate_state;
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s64 entry_time = time;
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while (entry_time < max_cycle_time) {
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rc = sja1105_insert_gate_entry(gating_cfg, rule,
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gate_state,
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entry_time,
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extack);
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if (rc)
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goto err;
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entry_time += rule->vl.cycle_time;
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}
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time += rule->vl.entries[i].interval;
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}
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}
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sja1105_gating_cfg_time_to_interval(gating_cfg, max_cycle_time);
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return 0;
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err:
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sja1105_free_gating_config(gating_cfg);
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return rc;
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}
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/* The switch flow classification core implements TTEthernet, which 'thinks' in
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* terms of Virtual Links (VL), a concept borrowed from ARINC 664 part 7.
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* However it also has one other operating mode (VLLUPFORMAT=0) where it acts
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* somewhat closer to a pre-standard implementation of IEEE 802.1Qci
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* (Per-Stream Filtering and Policing), which is what the driver is going to be
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* implementing.
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*
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* VL Lookup
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* Key = {DMAC && VLANID +---------+ Key = { (DMAC[47:16] & VLMASK ==
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* && VLAN PCP | | VLMARKER)
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* && INGRESS PORT} +---------+ (both fixed)
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* (exact match, | && DMAC[15:0] == VLID
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* all specified in rule) | (specified in rule)
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* v && INGRESS PORT }
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* ------------
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* 0 (PSFP) / \ 1 (ARINC664)
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* +-----------/ VLLUPFORMAT \----------+
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* | \ (fixed) / |
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* | \ / |
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* 0 (forwarding) v ------------ |
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* ------------ |
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* / \ 1 (QoS classification) |
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* +---/ ISCRITICAL \-----------+ |
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* | \ (per rule) / | |
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* | \ / VLID taken from VLID taken from
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* v ------------ index of rule contents of rule
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* select that matched that matched
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* DESTPORTS | |
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* | +---------+--------+
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* | |
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* | v
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* | VL Forwarding
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* | (indexed by VLID)
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* | +---------+
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* | +--------------| |
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* | | select TYPE +---------+
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* | v
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* | 0 (rate ------------ 1 (time
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* | constrained) / \ triggered)
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* | +------/ TYPE \------------+
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* | | \ (per VLID) / |
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* | v \ / v
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* | VL Policing ------------ VL Policing
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* | (indexed by VLID) (indexed by VLID)
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* | +---------+ +---------+
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* | | TYPE=0 | | TYPE=1 |
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* | +---------+ +---------+
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* | select SHARINDX select SHARINDX to
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* | to rate-limit re-enter VL Forwarding
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* | groups of VL's with new VLID for egress
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* | to same quota |
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* | | |
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* | select MAXLEN -> exceed => drop select MAXLEN -> exceed => drop
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* | | |
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* | v v
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* | VL Forwarding VL Forwarding
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* | (indexed by SHARINDX) (indexed by SHARINDX)
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* | +---------+ +---------+
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* | | TYPE=0 | | TYPE=1 |
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* | +---------+ +---------+
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* | select PRIORITY, select PRIORITY,
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* | PARTITION, DESTPORTS PARTITION, DESTPORTS
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* | | |
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* | v v
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* | VL Policing VL Policing
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* | (indexed by SHARINDX) (indexed by SHARINDX)
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* | +---------+ +---------+
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* | | TYPE=0 | | TYPE=1 |
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* | +---------+ +---------+
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* | | |
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* | v |
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* | select BAG, -> exceed => drop |
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* | JITTER v
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* | | ----------------------------------------------
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* | | / Reception Window is open for this VL \
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* | | / (the Schedule Table executes an entry i \
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* | | / M <= i < N, for which these conditions hold): \ no
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* | | +----/ \-+
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* | | |yes \ WINST[M] == 1 && WINSTINDEX[M] == VLID / |
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* | | | \ WINEND[N] == 1 && WINSTINDEX[N] == VLID / |
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* | | | \ / |
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* | | | \ (the VL window has opened and not yet closed)/ |
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* | | | ---------------------------------------------- |
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* | | v v
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* | | dispatch to DESTPORTS when the Schedule Table drop
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* | | executes an entry i with TXEN == 1 && VLINDEX == i
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* v v
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* dispatch immediately to DESTPORTS
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*
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* The per-port classification key is always composed of {DMAC, VID, PCP} and
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* is non-maskable. This 'looks like' the NULL stream identification function
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* from IEEE 802.1CB clause 6, except for the extra VLAN PCP. When the switch
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* ports operate as VLAN-unaware, we do allow the user to not specify the VLAN
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* ID and PCP, and then the port-based defaults will be used.
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*
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* In TTEthernet, routing is something that needs to be done manually for each
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* Virtual Link. So the flow action must always include one of:
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* a. 'redirect', 'trap' or 'drop': select the egress port list
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* Additionally, the following actions may be applied on a Virtual Link,
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* turning it into 'critical' traffic:
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* b. 'police': turn it into a rate-constrained VL, with bandwidth limitation
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* given by the maximum frame length, bandwidth allocation gap (BAG) and
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* maximum jitter.
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* c. 'gate': turn it into a time-triggered VL, which can be only be received
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* and forwarded according to a given schedule.
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*/
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static bool sja1105_vl_key_lower(struct sja1105_vl_lookup_entry *a,
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struct sja1105_vl_lookup_entry *b)
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{
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if (a->macaddr < b->macaddr)
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return true;
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if (a->macaddr > b->macaddr)
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return false;
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if (a->vlanid < b->vlanid)
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return true;
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if (a->vlanid > b->vlanid)
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return false;
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if (a->port < b->port)
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return true;
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if (a->port > b->port)
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return false;
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if (a->vlanprior < b->vlanprior)
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return true;
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if (a->vlanprior > b->vlanprior)
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return false;
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/* Keys are equal */
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return false;
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}
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/* FIXME: this should change when the bridge upper of the port changes. */
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static u16 sja1105_port_get_tag_8021q_vid(struct dsa_port *dp)
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{
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unsigned long bridge_num;
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if (!dp->bridge)
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return dsa_tag_8021q_standalone_vid(dp);
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bridge_num = dsa_port_bridge_num_get(dp);
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return dsa_tag_8021q_bridge_vid(bridge_num);
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}
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static int sja1105_init_virtual_links(struct sja1105_private *priv,
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struct netlink_ext_ack *extack)
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{
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struct sja1105_vl_policing_entry *vl_policing;
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struct sja1105_vl_forwarding_entry *vl_fwd;
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struct sja1105_vl_lookup_entry *vl_lookup;
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bool have_critical_virtual_links = false;
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struct sja1105_table *table;
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struct sja1105_rule *rule;
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int num_virtual_links = 0;
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int max_sharindx = 0;
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int i, j, k;
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/* Figure out the dimensioning of the problem */
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list_for_each_entry(rule, &priv->flow_block.rules, list) {
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if (rule->type != SJA1105_RULE_VL)
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continue;
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/* Each VL lookup entry matches on a single ingress port */
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num_virtual_links += hweight_long(rule->port_mask);
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if (rule->vl.type != SJA1105_VL_NONCRITICAL)
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have_critical_virtual_links = true;
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if (max_sharindx < rule->vl.sharindx)
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max_sharindx = rule->vl.sharindx;
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}
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if (num_virtual_links > SJA1105_MAX_VL_LOOKUP_COUNT) {
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NL_SET_ERR_MSG_MOD(extack, "Not enough VL entries available");
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return -ENOSPC;
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}
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if (max_sharindx + 1 > SJA1105_MAX_VL_LOOKUP_COUNT) {
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NL_SET_ERR_MSG_MOD(extack, "Policer index out of range");
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return -ENOSPC;
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}
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max_sharindx = max_t(int, num_virtual_links, max_sharindx) + 1;
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/* Discard previous VL Lookup Table */
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table = &priv->static_config.tables[BLK_IDX_VL_LOOKUP];
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if (table->entry_count) {
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kfree(table->entries);
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table->entry_count = 0;
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}
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/* Discard previous VL Policing Table */
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table = &priv->static_config.tables[BLK_IDX_VL_POLICING];
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if (table->entry_count) {
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kfree(table->entries);
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table->entry_count = 0;
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}
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/* Discard previous VL Forwarding Table */
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table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING];
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if (table->entry_count) {
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kfree(table->entries);
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table->entry_count = 0;
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}
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/* Discard previous VL Forwarding Parameters Table */
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table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING_PARAMS];
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if (table->entry_count) {
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kfree(table->entries);
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table->entry_count = 0;
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}
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/* Nothing to do */
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if (!num_virtual_links)
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return 0;
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/* Pre-allocate space in the static config tables */
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/* VL Lookup Table */
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table = &priv->static_config.tables[BLK_IDX_VL_LOOKUP];
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table->entries = kcalloc(num_virtual_links,
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table->ops->unpacked_entry_size,
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GFP_KERNEL);
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if (!table->entries)
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return -ENOMEM;
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table->entry_count = num_virtual_links;
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vl_lookup = table->entries;
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k = 0;
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list_for_each_entry(rule, &priv->flow_block.rules, list) {
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unsigned long port;
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if (rule->type != SJA1105_RULE_VL)
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continue;
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for_each_set_bit(port, &rule->port_mask, SJA1105_MAX_NUM_PORTS) {
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vl_lookup[k].format = SJA1105_VL_FORMAT_PSFP;
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vl_lookup[k].port = port;
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vl_lookup[k].macaddr = rule->key.vl.dmac;
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if (rule->key.type == SJA1105_KEY_VLAN_AWARE_VL) {
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vl_lookup[k].vlanid = rule->key.vl.vid;
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vl_lookup[k].vlanprior = rule->key.vl.pcp;
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} else {
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/* FIXME */
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struct dsa_port *dp = dsa_to_port(priv->ds, port);
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u16 vid = sja1105_port_get_tag_8021q_vid(dp);
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vl_lookup[k].vlanid = vid;
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vl_lookup[k].vlanprior = 0;
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}
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/* For critical VLs, the DESTPORTS mask is taken from
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* the VL Forwarding Table, so no point in putting it
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* in the VL Lookup Table
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*/
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if (rule->vl.type == SJA1105_VL_NONCRITICAL)
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vl_lookup[k].destports = rule->vl.destports;
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else
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vl_lookup[k].iscritical = true;
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vl_lookup[k].flow_cookie = rule->cookie;
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k++;
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}
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}
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/* UM10944.pdf chapter 4.2.3 VL Lookup table:
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* "the entries in the VL Lookup table must be sorted in ascending
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* order (i.e. the smallest value must be loaded first) according to
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* the following sort order: MACADDR, VLANID, PORT, VLANPRIOR."
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*/
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for (i = 0; i < num_virtual_links; i++) {
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struct sja1105_vl_lookup_entry *a = &vl_lookup[i];
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for (j = i + 1; j < num_virtual_links; j++) {
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struct sja1105_vl_lookup_entry *b = &vl_lookup[j];
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if (sja1105_vl_key_lower(b, a)) {
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struct sja1105_vl_lookup_entry tmp = *a;
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*a = *b;
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*b = tmp;
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}
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}
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}
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if (!have_critical_virtual_links)
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return 0;
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/* VL Policing Table */
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table = &priv->static_config.tables[BLK_IDX_VL_POLICING];
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table->entries = kcalloc(max_sharindx, table->ops->unpacked_entry_size,
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GFP_KERNEL);
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if (!table->entries)
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return -ENOMEM;
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table->entry_count = max_sharindx;
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vl_policing = table->entries;
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/* VL Forwarding Table */
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table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING];
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table->entries = kcalloc(max_sharindx, table->ops->unpacked_entry_size,
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GFP_KERNEL);
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if (!table->entries)
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return -ENOMEM;
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table->entry_count = max_sharindx;
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vl_fwd = table->entries;
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/* VL Forwarding Parameters Table */
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table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING_PARAMS];
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table->entries = kcalloc(1, table->ops->unpacked_entry_size,
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GFP_KERNEL);
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if (!table->entries)
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return -ENOMEM;
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table->entry_count = 1;
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for (i = 0; i < num_virtual_links; i++) {
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unsigned long cookie = vl_lookup[i].flow_cookie;
|
|
struct sja1105_rule *rule = sja1105_rule_find(priv, cookie);
|
|
|
|
if (rule->vl.type == SJA1105_VL_NONCRITICAL)
|
|
continue;
|
|
if (rule->vl.type == SJA1105_VL_TIME_TRIGGERED) {
|
|
int sharindx = rule->vl.sharindx;
|
|
|
|
vl_policing[i].type = 1;
|
|
vl_policing[i].sharindx = sharindx;
|
|
vl_policing[i].maxlen = rule->vl.maxlen;
|
|
vl_policing[sharindx].type = 1;
|
|
|
|
vl_fwd[i].type = 1;
|
|
vl_fwd[sharindx].type = 1;
|
|
vl_fwd[sharindx].priority = rule->vl.ipv;
|
|
vl_fwd[sharindx].partition = 0;
|
|
vl_fwd[sharindx].destports = rule->vl.destports;
|
|
}
|
|
}
|
|
|
|
sja1105_frame_memory_partitioning(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int sja1105_vl_redirect(struct sja1105_private *priv, int port,
|
|
struct netlink_ext_ack *extack, unsigned long cookie,
|
|
struct sja1105_key *key, unsigned long destports,
|
|
bool append)
|
|
{
|
|
struct sja1105_rule *rule = sja1105_rule_find(priv, cookie);
|
|
struct dsa_port *dp = dsa_to_port(priv->ds, port);
|
|
bool vlan_aware = dsa_port_is_vlan_filtering(dp);
|
|
int rc;
|
|
|
|
if (!vlan_aware && key->type != SJA1105_KEY_VLAN_UNAWARE_VL) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Can only redirect based on DMAC");
|
|
return -EOPNOTSUPP;
|
|
} else if (vlan_aware && key->type != SJA1105_KEY_VLAN_AWARE_VL) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Can only redirect based on {DMAC, VID, PCP}");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (!rule) {
|
|
rule = kzalloc(sizeof(*rule), GFP_KERNEL);
|
|
if (!rule)
|
|
return -ENOMEM;
|
|
|
|
rule->cookie = cookie;
|
|
rule->type = SJA1105_RULE_VL;
|
|
rule->key = *key;
|
|
list_add(&rule->list, &priv->flow_block.rules);
|
|
}
|
|
|
|
rule->port_mask |= BIT(port);
|
|
if (append)
|
|
rule->vl.destports |= destports;
|
|
else
|
|
rule->vl.destports = destports;
|
|
|
|
rc = sja1105_init_virtual_links(priv, extack);
|
|
if (rc) {
|
|
rule->port_mask &= ~BIT(port);
|
|
if (!rule->port_mask) {
|
|
list_del(&rule->list);
|
|
kfree(rule);
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int sja1105_vl_delete(struct sja1105_private *priv, int port,
|
|
struct sja1105_rule *rule, struct netlink_ext_ack *extack)
|
|
{
|
|
int rc;
|
|
|
|
rule->port_mask &= ~BIT(port);
|
|
if (!rule->port_mask) {
|
|
list_del(&rule->list);
|
|
kfree(rule);
|
|
}
|
|
|
|
rc = sja1105_compose_gating_subschedule(priv, extack);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = sja1105_init_virtual_links(priv, extack);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = sja1105_init_scheduling(priv);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
return sja1105_static_config_reload(priv, SJA1105_VIRTUAL_LINKS);
|
|
}
|
|
|
|
int sja1105_vl_gate(struct sja1105_private *priv, int port,
|
|
struct netlink_ext_ack *extack, unsigned long cookie,
|
|
struct sja1105_key *key, u32 index, s32 prio,
|
|
u64 base_time, u64 cycle_time, u64 cycle_time_ext,
|
|
u32 num_entries, struct action_gate_entry *entries)
|
|
{
|
|
struct sja1105_rule *rule = sja1105_rule_find(priv, cookie);
|
|
struct dsa_port *dp = dsa_to_port(priv->ds, port);
|
|
bool vlan_aware = dsa_port_is_vlan_filtering(dp);
|
|
int ipv = -1;
|
|
int i, rc;
|
|
s32 rem;
|
|
|
|
if (cycle_time_ext) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Cycle time extension not supported");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
div_s64_rem(base_time, sja1105_delta_to_ns(1), &rem);
|
|
if (rem) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Base time must be multiple of 200 ns");
|
|
return -ERANGE;
|
|
}
|
|
|
|
div_s64_rem(cycle_time, sja1105_delta_to_ns(1), &rem);
|
|
if (rem) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Cycle time must be multiple of 200 ns");
|
|
return -ERANGE;
|
|
}
|
|
|
|
if (!vlan_aware && key->type != SJA1105_KEY_VLAN_UNAWARE_VL) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Can only gate based on DMAC");
|
|
return -EOPNOTSUPP;
|
|
} else if (vlan_aware && key->type != SJA1105_KEY_VLAN_AWARE_VL) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Can only gate based on {DMAC, VID, PCP}");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (!rule) {
|
|
rule = kzalloc(sizeof(*rule), GFP_KERNEL);
|
|
if (!rule)
|
|
return -ENOMEM;
|
|
|
|
list_add(&rule->list, &priv->flow_block.rules);
|
|
rule->cookie = cookie;
|
|
rule->type = SJA1105_RULE_VL;
|
|
rule->key = *key;
|
|
rule->vl.type = SJA1105_VL_TIME_TRIGGERED;
|
|
rule->vl.sharindx = index;
|
|
rule->vl.base_time = base_time;
|
|
rule->vl.cycle_time = cycle_time;
|
|
rule->vl.num_entries = num_entries;
|
|
rule->vl.entries = kcalloc(num_entries,
|
|
sizeof(struct action_gate_entry),
|
|
GFP_KERNEL);
|
|
if (!rule->vl.entries) {
|
|
rc = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < num_entries; i++) {
|
|
div_s64_rem(entries[i].interval,
|
|
sja1105_delta_to_ns(1), &rem);
|
|
if (rem) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Interval must be multiple of 200 ns");
|
|
rc = -ERANGE;
|
|
goto out;
|
|
}
|
|
|
|
if (!entries[i].interval) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Interval cannot be zero");
|
|
rc = -ERANGE;
|
|
goto out;
|
|
}
|
|
|
|
if (ns_to_sja1105_delta(entries[i].interval) >
|
|
SJA1105_TAS_MAX_DELTA) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Maximum interval is 52 ms");
|
|
rc = -ERANGE;
|
|
goto out;
|
|
}
|
|
|
|
if (entries[i].maxoctets != -1) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Cannot offload IntervalOctetMax");
|
|
rc = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
if (ipv == -1) {
|
|
ipv = entries[i].ipv;
|
|
} else if (ipv != entries[i].ipv) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Only support a single IPV per VL");
|
|
rc = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
rule->vl.entries[i] = entries[i];
|
|
}
|
|
|
|
if (ipv == -1) {
|
|
if (key->type == SJA1105_KEY_VLAN_AWARE_VL)
|
|
ipv = key->vl.pcp;
|
|
else
|
|
ipv = 0;
|
|
}
|
|
|
|
/* TODO: support per-flow MTU */
|
|
rule->vl.maxlen = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN;
|
|
rule->vl.ipv = ipv;
|
|
}
|
|
|
|
rule->port_mask |= BIT(port);
|
|
|
|
rc = sja1105_compose_gating_subschedule(priv, extack);
|
|
if (rc)
|
|
goto out;
|
|
|
|
rc = sja1105_init_virtual_links(priv, extack);
|
|
if (rc)
|
|
goto out;
|
|
|
|
if (sja1105_gating_check_conflicts(priv, -1, extack)) {
|
|
NL_SET_ERR_MSG_MOD(extack, "Conflict with tc-taprio schedule");
|
|
rc = -ERANGE;
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
if (rc) {
|
|
rule->port_mask &= ~BIT(port);
|
|
if (!rule->port_mask) {
|
|
list_del(&rule->list);
|
|
kfree(rule->vl.entries);
|
|
kfree(rule);
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int sja1105_find_vlid(struct sja1105_private *priv, int port,
|
|
struct sja1105_key *key)
|
|
{
|
|
struct sja1105_vl_lookup_entry *vl_lookup;
|
|
struct sja1105_table *table;
|
|
int i;
|
|
|
|
if (WARN_ON(key->type != SJA1105_KEY_VLAN_AWARE_VL &&
|
|
key->type != SJA1105_KEY_VLAN_UNAWARE_VL))
|
|
return -1;
|
|
|
|
table = &priv->static_config.tables[BLK_IDX_VL_LOOKUP];
|
|
vl_lookup = table->entries;
|
|
|
|
for (i = 0; i < table->entry_count; i++) {
|
|
if (key->type == SJA1105_KEY_VLAN_AWARE_VL) {
|
|
if (vl_lookup[i].port == port &&
|
|
vl_lookup[i].macaddr == key->vl.dmac &&
|
|
vl_lookup[i].vlanid == key->vl.vid &&
|
|
vl_lookup[i].vlanprior == key->vl.pcp)
|
|
return i;
|
|
} else {
|
|
if (vl_lookup[i].port == port &&
|
|
vl_lookup[i].macaddr == key->vl.dmac)
|
|
return i;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int sja1105_vl_stats(struct sja1105_private *priv, int port,
|
|
struct sja1105_rule *rule, struct flow_stats *stats,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
const struct sja1105_regs *regs = priv->info->regs;
|
|
u8 buf[SJA1105_SIZE_VL_STATUS] = {0};
|
|
u64 unreleased;
|
|
u64 timingerr;
|
|
u64 lengtherr;
|
|
int vlid, rc;
|
|
u64 pkts;
|
|
|
|
if (rule->vl.type != SJA1105_VL_TIME_TRIGGERED)
|
|
return 0;
|
|
|
|
vlid = sja1105_find_vlid(priv, port, &rule->key);
|
|
if (vlid < 0)
|
|
return 0;
|
|
|
|
rc = sja1105_xfer_buf(priv, SPI_READ, regs->vl_status + 2 * vlid, buf,
|
|
SJA1105_SIZE_VL_STATUS);
|
|
if (rc) {
|
|
NL_SET_ERR_MSG_MOD(extack, "SPI access failed");
|
|
return rc;
|
|
}
|
|
|
|
sja1105_unpack(buf, &timingerr, 31, 16, SJA1105_SIZE_VL_STATUS);
|
|
sja1105_unpack(buf, &unreleased, 15, 0, SJA1105_SIZE_VL_STATUS);
|
|
sja1105_unpack(buf, &lengtherr, 47, 32, SJA1105_SIZE_VL_STATUS);
|
|
|
|
pkts = timingerr + unreleased + lengtherr;
|
|
|
|
flow_stats_update(stats, 0, pkts - rule->vl.stats.pkts, 0,
|
|
jiffies - rule->vl.stats.lastused,
|
|
FLOW_ACTION_HW_STATS_IMMEDIATE);
|
|
|
|
rule->vl.stats.pkts = pkts;
|
|
rule->vl.stats.lastused = jiffies;
|
|
|
|
return 0;
|
|
}
|