/*
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* This file is part of the Chelsio T4/T5/T6 Ethernet driver for Linux.
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*
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* Copyright (c) 2017 Chelsio Communications, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <net/tc_act/tc_mirred.h>
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#include <net/tc_act/tc_pedit.h>
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#include <net/tc_act/tc_gact.h>
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#include <net/tc_act/tc_vlan.h>
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#include "cxgb4.h"
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#include "cxgb4_filter.h"
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#include "cxgb4_tc_flower.h"
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#define STATS_CHECK_PERIOD (HZ / 2)
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static struct ch_tc_pedit_fields pedits[] = {
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PEDIT_FIELDS(ETH_, DMAC_31_0, 4, dmac, 0),
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PEDIT_FIELDS(ETH_, DMAC_47_32, 2, dmac, 4),
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PEDIT_FIELDS(ETH_, SMAC_15_0, 2, smac, 0),
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PEDIT_FIELDS(ETH_, SMAC_47_16, 4, smac, 2),
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PEDIT_FIELDS(IP4_, SRC, 4, nat_fip, 0),
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PEDIT_FIELDS(IP4_, DST, 4, nat_lip, 0),
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PEDIT_FIELDS(IP6_, SRC_31_0, 4, nat_fip, 0),
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PEDIT_FIELDS(IP6_, SRC_63_32, 4, nat_fip, 4),
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PEDIT_FIELDS(IP6_, SRC_95_64, 4, nat_fip, 8),
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PEDIT_FIELDS(IP6_, SRC_127_96, 4, nat_fip, 12),
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PEDIT_FIELDS(IP6_, DST_31_0, 4, nat_lip, 0),
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PEDIT_FIELDS(IP6_, DST_63_32, 4, nat_lip, 4),
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PEDIT_FIELDS(IP6_, DST_95_64, 4, nat_lip, 8),
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PEDIT_FIELDS(IP6_, DST_127_96, 4, nat_lip, 12),
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};
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static const struct cxgb4_natmode_config cxgb4_natmode_config_array[] = {
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/* Default supported NAT modes */
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{
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.chip = CHELSIO_T5,
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.flags = CXGB4_ACTION_NATMODE_NONE,
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.natmode = NAT_MODE_NONE,
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},
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{
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.chip = CHELSIO_T5,
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.flags = CXGB4_ACTION_NATMODE_DIP,
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.natmode = NAT_MODE_DIP,
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},
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{
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.chip = CHELSIO_T5,
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.flags = CXGB4_ACTION_NATMODE_DIP | CXGB4_ACTION_NATMODE_DPORT,
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.natmode = NAT_MODE_DIP_DP,
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},
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{
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.chip = CHELSIO_T5,
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.flags = CXGB4_ACTION_NATMODE_DIP | CXGB4_ACTION_NATMODE_DPORT |
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CXGB4_ACTION_NATMODE_SIP,
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.natmode = NAT_MODE_DIP_DP_SIP,
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},
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{
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.chip = CHELSIO_T5,
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.flags = CXGB4_ACTION_NATMODE_DIP | CXGB4_ACTION_NATMODE_DPORT |
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CXGB4_ACTION_NATMODE_SPORT,
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.natmode = NAT_MODE_DIP_DP_SP,
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},
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{
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.chip = CHELSIO_T5,
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.flags = CXGB4_ACTION_NATMODE_SIP | CXGB4_ACTION_NATMODE_SPORT,
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.natmode = NAT_MODE_SIP_SP,
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},
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{
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.chip = CHELSIO_T5,
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.flags = CXGB4_ACTION_NATMODE_DIP | CXGB4_ACTION_NATMODE_SIP |
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CXGB4_ACTION_NATMODE_SPORT,
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.natmode = NAT_MODE_DIP_SIP_SP,
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},
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{
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.chip = CHELSIO_T5,
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.flags = CXGB4_ACTION_NATMODE_DIP | CXGB4_ACTION_NATMODE_SIP |
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CXGB4_ACTION_NATMODE_DPORT |
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CXGB4_ACTION_NATMODE_SPORT,
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.natmode = NAT_MODE_ALL,
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},
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/* T6+ can ignore L4 ports when they're disabled. */
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{
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.chip = CHELSIO_T6,
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.flags = CXGB4_ACTION_NATMODE_SIP,
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.natmode = NAT_MODE_SIP_SP,
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},
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{
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.chip = CHELSIO_T6,
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.flags = CXGB4_ACTION_NATMODE_DIP | CXGB4_ACTION_NATMODE_SPORT,
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.natmode = NAT_MODE_DIP_DP_SP,
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},
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{
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.chip = CHELSIO_T6,
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.flags = CXGB4_ACTION_NATMODE_DIP | CXGB4_ACTION_NATMODE_SIP,
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.natmode = NAT_MODE_ALL,
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},
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};
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static void cxgb4_action_natmode_tweak(struct ch_filter_specification *fs,
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u8 natmode_flags)
|
{
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u8 i = 0;
|
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/* Translate the enabled NAT 4-tuple fields to one of the
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* hardware supported NAT mode configurations. This ensures
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* that we pick a valid combination, where the disabled fields
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* do not get overwritten to 0.
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*/
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for (i = 0; i < ARRAY_SIZE(cxgb4_natmode_config_array); i++) {
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if (cxgb4_natmode_config_array[i].flags == natmode_flags) {
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fs->nat_mode = cxgb4_natmode_config_array[i].natmode;
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return;
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}
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}
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}
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static struct ch_tc_flower_entry *allocate_flower_entry(void)
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{
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struct ch_tc_flower_entry *new = kzalloc(sizeof(*new), GFP_KERNEL);
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if (new)
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spin_lock_init(&new->lock);
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return new;
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}
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/* Must be called with either RTNL or rcu_read_lock */
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static struct ch_tc_flower_entry *ch_flower_lookup(struct adapter *adap,
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unsigned long flower_cookie)
|
{
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return rhashtable_lookup_fast(&adap->flower_tbl, &flower_cookie,
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adap->flower_ht_params);
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}
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static void cxgb4_process_flow_match(struct net_device *dev,
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struct flow_rule *rule,
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struct ch_filter_specification *fs)
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{
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u16 addr_type = 0;
|
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
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struct flow_match_control match;
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flow_rule_match_control(rule, &match);
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addr_type = match.key->addr_type;
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} else if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV4_ADDRS)) {
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addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
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} else if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV6_ADDRS)) {
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addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
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}
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
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struct flow_match_basic match;
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u16 ethtype_key, ethtype_mask;
|
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flow_rule_match_basic(rule, &match);
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ethtype_key = ntohs(match.key->n_proto);
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ethtype_mask = ntohs(match.mask->n_proto);
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if (ethtype_key == ETH_P_ALL) {
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ethtype_key = 0;
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ethtype_mask = 0;
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}
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if (ethtype_key == ETH_P_IPV6)
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fs->type = 1;
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fs->val.ethtype = ethtype_key;
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fs->mask.ethtype = ethtype_mask;
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fs->val.proto = match.key->ip_proto;
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fs->mask.proto = match.mask->ip_proto;
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}
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if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
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struct flow_match_ipv4_addrs match;
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flow_rule_match_ipv4_addrs(rule, &match);
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fs->type = 0;
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memcpy(&fs->val.lip[0], &match.key->dst, sizeof(match.key->dst));
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memcpy(&fs->val.fip[0], &match.key->src, sizeof(match.key->src));
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memcpy(&fs->mask.lip[0], &match.mask->dst, sizeof(match.mask->dst));
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memcpy(&fs->mask.fip[0], &match.mask->src, sizeof(match.mask->src));
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/* also initialize nat_lip/fip to same values */
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memcpy(&fs->nat_lip[0], &match.key->dst, sizeof(match.key->dst));
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memcpy(&fs->nat_fip[0], &match.key->src, sizeof(match.key->src));
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}
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if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
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struct flow_match_ipv6_addrs match;
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flow_rule_match_ipv6_addrs(rule, &match);
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fs->type = 1;
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memcpy(&fs->val.lip[0], match.key->dst.s6_addr,
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sizeof(match.key->dst));
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memcpy(&fs->val.fip[0], match.key->src.s6_addr,
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sizeof(match.key->src));
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memcpy(&fs->mask.lip[0], match.mask->dst.s6_addr,
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sizeof(match.mask->dst));
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memcpy(&fs->mask.fip[0], match.mask->src.s6_addr,
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sizeof(match.mask->src));
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/* also initialize nat_lip/fip to same values */
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memcpy(&fs->nat_lip[0], match.key->dst.s6_addr,
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sizeof(match.key->dst));
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memcpy(&fs->nat_fip[0], match.key->src.s6_addr,
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sizeof(match.key->src));
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}
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
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struct flow_match_ports match;
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flow_rule_match_ports(rule, &match);
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fs->val.lport = be16_to_cpu(match.key->dst);
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fs->mask.lport = be16_to_cpu(match.mask->dst);
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fs->val.fport = be16_to_cpu(match.key->src);
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fs->mask.fport = be16_to_cpu(match.mask->src);
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/* also initialize nat_lport/fport to same values */
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fs->nat_lport = fs->val.lport;
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fs->nat_fport = fs->val.fport;
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}
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
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struct flow_match_ip match;
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flow_rule_match_ip(rule, &match);
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fs->val.tos = match.key->tos;
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fs->mask.tos = match.mask->tos;
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}
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
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struct flow_match_enc_keyid match;
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flow_rule_match_enc_keyid(rule, &match);
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fs->val.vni = be32_to_cpu(match.key->keyid);
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fs->mask.vni = be32_to_cpu(match.mask->keyid);
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if (fs->mask.vni) {
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fs->val.encap_vld = 1;
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fs->mask.encap_vld = 1;
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}
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}
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if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
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struct flow_match_vlan match;
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u16 vlan_tci, vlan_tci_mask;
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flow_rule_match_vlan(rule, &match);
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vlan_tci = match.key->vlan_id | (match.key->vlan_priority <<
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VLAN_PRIO_SHIFT);
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vlan_tci_mask = match.mask->vlan_id | (match.mask->vlan_priority <<
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VLAN_PRIO_SHIFT);
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fs->val.ivlan = vlan_tci;
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fs->mask.ivlan = vlan_tci_mask;
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fs->val.ivlan_vld = 1;
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fs->mask.ivlan_vld = 1;
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/* Chelsio adapters use ivlan_vld bit to match vlan packets
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* as 802.1Q. Also, when vlan tag is present in packets,
|
* ethtype match is used then to match on ethtype of inner
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* header ie. the header following the vlan header.
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* So, set the ivlan_vld based on ethtype info supplied by
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* TC for vlan packets if its 802.1Q. And then reset the
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* ethtype value else, hw will try to match the supplied
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* ethtype value with ethtype of inner header.
|
*/
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if (fs->val.ethtype == ETH_P_8021Q) {
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fs->val.ethtype = 0;
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fs->mask.ethtype = 0;
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}
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}
|
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/* Match only packets coming from the ingress port where this
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* filter will be created.
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*/
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fs->val.iport = netdev2pinfo(dev)->port_id;
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fs->mask.iport = ~0;
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}
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static int cxgb4_validate_flow_match(struct net_device *dev,
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struct flow_rule *rule)
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{
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struct flow_dissector *dissector = rule->match.dissector;
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u16 ethtype_mask = 0;
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u16 ethtype_key = 0;
|
|
if (dissector->used_keys &
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~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
|
BIT(FLOW_DISSECTOR_KEY_BASIC) |
|
BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_PORTS) |
|
BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
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BIT(FLOW_DISSECTOR_KEY_VLAN) |
|
BIT(FLOW_DISSECTOR_KEY_IP))) {
|
netdev_warn(dev, "Unsupported key used: 0x%x\n",
|
dissector->used_keys);
|
return -EOPNOTSUPP;
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
|
struct flow_match_basic match;
|
|
flow_rule_match_basic(rule, &match);
|
ethtype_key = ntohs(match.key->n_proto);
|
ethtype_mask = ntohs(match.mask->n_proto);
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
|
u16 eth_ip_type = ethtype_key & ethtype_mask;
|
struct flow_match_ip match;
|
|
if (eth_ip_type != ETH_P_IP && eth_ip_type != ETH_P_IPV6) {
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netdev_err(dev, "IP Key supported only with IPv4/v6");
|
return -EINVAL;
|
}
|
|
flow_rule_match_ip(rule, &match);
|
if (match.mask->ttl) {
|
netdev_warn(dev, "ttl match unsupported for offload");
|
return -EOPNOTSUPP;
|
}
|
}
|
|
return 0;
|
}
|
|
static void offload_pedit(struct ch_filter_specification *fs, u32 val, u32 mask,
|
u8 field)
|
{
|
u32 set_val = val & ~mask;
|
u32 offset = 0;
|
u8 size = 1;
|
int i;
|
|
for (i = 0; i < ARRAY_SIZE(pedits); i++) {
|
if (pedits[i].field == field) {
|
offset = pedits[i].offset;
|
size = pedits[i].size;
|
break;
|
}
|
}
|
memcpy((u8 *)fs + offset, &set_val, size);
|
}
|
|
static void process_pedit_field(struct ch_filter_specification *fs, u32 val,
|
u32 mask, u32 offset, u8 htype,
|
u8 *natmode_flags)
|
{
|
switch (htype) {
|
case FLOW_ACT_MANGLE_HDR_TYPE_ETH:
|
switch (offset) {
|
case PEDIT_ETH_DMAC_31_0:
|
fs->newdmac = 1;
|
offload_pedit(fs, val, mask, ETH_DMAC_31_0);
|
break;
|
case PEDIT_ETH_DMAC_47_32_SMAC_15_0:
|
if (~mask & PEDIT_ETH_DMAC_MASK)
|
offload_pedit(fs, val, mask, ETH_DMAC_47_32);
|
else
|
offload_pedit(fs, val >> 16, mask >> 16,
|
ETH_SMAC_15_0);
|
break;
|
case PEDIT_ETH_SMAC_47_16:
|
fs->newsmac = 1;
|
offload_pedit(fs, val, mask, ETH_SMAC_47_16);
|
}
|
break;
|
case FLOW_ACT_MANGLE_HDR_TYPE_IP4:
|
switch (offset) {
|
case PEDIT_IP4_SRC:
|
offload_pedit(fs, val, mask, IP4_SRC);
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SIP;
|
break;
|
case PEDIT_IP4_DST:
|
offload_pedit(fs, val, mask, IP4_DST);
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DIP;
|
}
|
break;
|
case FLOW_ACT_MANGLE_HDR_TYPE_IP6:
|
switch (offset) {
|
case PEDIT_IP6_SRC_31_0:
|
offload_pedit(fs, val, mask, IP6_SRC_31_0);
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SIP;
|
break;
|
case PEDIT_IP6_SRC_63_32:
|
offload_pedit(fs, val, mask, IP6_SRC_63_32);
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SIP;
|
break;
|
case PEDIT_IP6_SRC_95_64:
|
offload_pedit(fs, val, mask, IP6_SRC_95_64);
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SIP;
|
break;
|
case PEDIT_IP6_SRC_127_96:
|
offload_pedit(fs, val, mask, IP6_SRC_127_96);
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SIP;
|
break;
|
case PEDIT_IP6_DST_31_0:
|
offload_pedit(fs, val, mask, IP6_DST_31_0);
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DIP;
|
break;
|
case PEDIT_IP6_DST_63_32:
|
offload_pedit(fs, val, mask, IP6_DST_63_32);
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DIP;
|
break;
|
case PEDIT_IP6_DST_95_64:
|
offload_pedit(fs, val, mask, IP6_DST_95_64);
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DIP;
|
break;
|
case PEDIT_IP6_DST_127_96:
|
offload_pedit(fs, val, mask, IP6_DST_127_96);
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DIP;
|
}
|
break;
|
case FLOW_ACT_MANGLE_HDR_TYPE_TCP:
|
switch (offset) {
|
case PEDIT_TCP_SPORT_DPORT:
|
if (~mask & PEDIT_TCP_UDP_SPORT_MASK) {
|
fs->nat_fport = val;
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SPORT;
|
} else {
|
fs->nat_lport = val >> 16;
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DPORT;
|
}
|
}
|
break;
|
case FLOW_ACT_MANGLE_HDR_TYPE_UDP:
|
switch (offset) {
|
case PEDIT_UDP_SPORT_DPORT:
|
if (~mask & PEDIT_TCP_UDP_SPORT_MASK) {
|
fs->nat_fport = val;
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SPORT;
|
} else {
|
fs->nat_lport = val >> 16;
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DPORT;
|
}
|
}
|
break;
|
}
|
}
|
|
static int cxgb4_action_natmode_validate(struct adapter *adap, u8 natmode_flags,
|
struct netlink_ext_ack *extack)
|
{
|
u8 i = 0;
|
|
/* Extract the NAT mode to enable based on what 4-tuple fields
|
* are enabled to be overwritten. This ensures that the
|
* disabled fields don't get overwritten to 0.
|
*/
|
for (i = 0; i < ARRAY_SIZE(cxgb4_natmode_config_array); i++) {
|
const struct cxgb4_natmode_config *c;
|
|
c = &cxgb4_natmode_config_array[i];
|
if (CHELSIO_CHIP_VERSION(adap->params.chip) >= c->chip &&
|
natmode_flags == c->flags)
|
return 0;
|
}
|
NL_SET_ERR_MSG_MOD(extack, "Unsupported NAT mode 4-tuple combination");
|
return -EOPNOTSUPP;
|
}
|
|
void cxgb4_process_flow_actions(struct net_device *in,
|
struct flow_action *actions,
|
struct ch_filter_specification *fs)
|
{
|
struct flow_action_entry *act;
|
u8 natmode_flags = 0;
|
int i;
|
|
flow_action_for_each(i, act, actions) {
|
switch (act->id) {
|
case FLOW_ACTION_ACCEPT:
|
fs->action = FILTER_PASS;
|
break;
|
case FLOW_ACTION_DROP:
|
fs->action = FILTER_DROP;
|
break;
|
case FLOW_ACTION_MIRRED:
|
case FLOW_ACTION_REDIRECT: {
|
struct net_device *out = act->dev;
|
struct port_info *pi = netdev_priv(out);
|
|
fs->action = FILTER_SWITCH;
|
fs->eport = pi->port_id;
|
}
|
break;
|
case FLOW_ACTION_VLAN_POP:
|
case FLOW_ACTION_VLAN_PUSH:
|
case FLOW_ACTION_VLAN_MANGLE: {
|
u8 prio = act->vlan.prio;
|
u16 vid = act->vlan.vid;
|
u16 vlan_tci = (prio << VLAN_PRIO_SHIFT) | vid;
|
switch (act->id) {
|
case FLOW_ACTION_VLAN_POP:
|
fs->newvlan |= VLAN_REMOVE;
|
break;
|
case FLOW_ACTION_VLAN_PUSH:
|
fs->newvlan |= VLAN_INSERT;
|
fs->vlan = vlan_tci;
|
break;
|
case FLOW_ACTION_VLAN_MANGLE:
|
fs->newvlan |= VLAN_REWRITE;
|
fs->vlan = vlan_tci;
|
break;
|
default:
|
break;
|
}
|
}
|
break;
|
case FLOW_ACTION_MANGLE: {
|
u32 mask, val, offset;
|
u8 htype;
|
|
htype = act->mangle.htype;
|
mask = act->mangle.mask;
|
val = act->mangle.val;
|
offset = act->mangle.offset;
|
|
process_pedit_field(fs, val, mask, offset, htype,
|
&natmode_flags);
|
}
|
break;
|
case FLOW_ACTION_QUEUE:
|
fs->action = FILTER_PASS;
|
fs->dirsteer = 1;
|
fs->iq = act->queue.index;
|
break;
|
default:
|
break;
|
}
|
}
|
if (natmode_flags)
|
cxgb4_action_natmode_tweak(fs, natmode_flags);
|
|
}
|
|
static bool valid_l4_mask(u32 mask)
|
{
|
u16 hi, lo;
|
|
/* Either the upper 16-bits (SPORT) OR the lower
|
* 16-bits (DPORT) can be set, but NOT BOTH.
|
*/
|
hi = (mask >> 16) & 0xFFFF;
|
lo = mask & 0xFFFF;
|
|
return hi && lo ? false : true;
|
}
|
|
static bool valid_pedit_action(struct net_device *dev,
|
const struct flow_action_entry *act,
|
u8 *natmode_flags)
|
{
|
u32 mask, offset;
|
u8 htype;
|
|
htype = act->mangle.htype;
|
mask = act->mangle.mask;
|
offset = act->mangle.offset;
|
|
switch (htype) {
|
case FLOW_ACT_MANGLE_HDR_TYPE_ETH:
|
switch (offset) {
|
case PEDIT_ETH_DMAC_31_0:
|
case PEDIT_ETH_DMAC_47_32_SMAC_15_0:
|
case PEDIT_ETH_SMAC_47_16:
|
break;
|
default:
|
netdev_err(dev, "%s: Unsupported pedit field\n",
|
__func__);
|
return false;
|
}
|
break;
|
case FLOW_ACT_MANGLE_HDR_TYPE_IP4:
|
switch (offset) {
|
case PEDIT_IP4_SRC:
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SIP;
|
break;
|
case PEDIT_IP4_DST:
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DIP;
|
break;
|
default:
|
netdev_err(dev, "%s: Unsupported pedit field\n",
|
__func__);
|
return false;
|
}
|
break;
|
case FLOW_ACT_MANGLE_HDR_TYPE_IP6:
|
switch (offset) {
|
case PEDIT_IP6_SRC_31_0:
|
case PEDIT_IP6_SRC_63_32:
|
case PEDIT_IP6_SRC_95_64:
|
case PEDIT_IP6_SRC_127_96:
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SIP;
|
break;
|
case PEDIT_IP6_DST_31_0:
|
case PEDIT_IP6_DST_63_32:
|
case PEDIT_IP6_DST_95_64:
|
case PEDIT_IP6_DST_127_96:
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DIP;
|
break;
|
default:
|
netdev_err(dev, "%s: Unsupported pedit field\n",
|
__func__);
|
return false;
|
}
|
break;
|
case FLOW_ACT_MANGLE_HDR_TYPE_TCP:
|
switch (offset) {
|
case PEDIT_TCP_SPORT_DPORT:
|
if (!valid_l4_mask(~mask)) {
|
netdev_err(dev, "%s: Unsupported mask for TCP L4 ports\n",
|
__func__);
|
return false;
|
}
|
if (~mask & PEDIT_TCP_UDP_SPORT_MASK)
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SPORT;
|
else
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DPORT;
|
break;
|
default:
|
netdev_err(dev, "%s: Unsupported pedit field\n",
|
__func__);
|
return false;
|
}
|
break;
|
case FLOW_ACT_MANGLE_HDR_TYPE_UDP:
|
switch (offset) {
|
case PEDIT_UDP_SPORT_DPORT:
|
if (!valid_l4_mask(~mask)) {
|
netdev_err(dev, "%s: Unsupported mask for UDP L4 ports\n",
|
__func__);
|
return false;
|
}
|
if (~mask & PEDIT_TCP_UDP_SPORT_MASK)
|
*natmode_flags |= CXGB4_ACTION_NATMODE_SPORT;
|
else
|
*natmode_flags |= CXGB4_ACTION_NATMODE_DPORT;
|
break;
|
default:
|
netdev_err(dev, "%s: Unsupported pedit field\n",
|
__func__);
|
return false;
|
}
|
break;
|
default:
|
netdev_err(dev, "%s: Unsupported pedit type\n", __func__);
|
return false;
|
}
|
return true;
|
}
|
|
int cxgb4_validate_flow_actions(struct net_device *dev,
|
struct flow_action *actions,
|
struct netlink_ext_ack *extack,
|
u8 matchall_filter)
|
{
|
struct adapter *adap = netdev2adap(dev);
|
struct flow_action_entry *act;
|
bool act_redir = false;
|
bool act_pedit = false;
|
bool act_vlan = false;
|
u8 natmode_flags = 0;
|
int i;
|
|
if (!flow_action_basic_hw_stats_check(actions, extack))
|
return -EOPNOTSUPP;
|
|
flow_action_for_each(i, act, actions) {
|
switch (act->id) {
|
case FLOW_ACTION_ACCEPT:
|
case FLOW_ACTION_DROP:
|
/* Do nothing */
|
break;
|
case FLOW_ACTION_MIRRED:
|
case FLOW_ACTION_REDIRECT: {
|
struct net_device *n_dev, *target_dev;
|
bool found = false;
|
unsigned int i;
|
|
if (act->id == FLOW_ACTION_MIRRED &&
|
!matchall_filter) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Egress mirror action is only supported for tc-matchall");
|
return -EOPNOTSUPP;
|
}
|
|
target_dev = act->dev;
|
for_each_port(adap, i) {
|
n_dev = adap->port[i];
|
if (target_dev == n_dev) {
|
found = true;
|
break;
|
}
|
}
|
|
/* If interface doesn't belong to our hw, then
|
* the provided output port is not valid
|
*/
|
if (!found) {
|
netdev_err(dev, "%s: Out port invalid\n",
|
__func__);
|
return -EINVAL;
|
}
|
act_redir = true;
|
}
|
break;
|
case FLOW_ACTION_VLAN_POP:
|
case FLOW_ACTION_VLAN_PUSH:
|
case FLOW_ACTION_VLAN_MANGLE: {
|
u16 proto = be16_to_cpu(act->vlan.proto);
|
|
switch (act->id) {
|
case FLOW_ACTION_VLAN_POP:
|
break;
|
case FLOW_ACTION_VLAN_PUSH:
|
case FLOW_ACTION_VLAN_MANGLE:
|
if (proto != ETH_P_8021Q) {
|
netdev_err(dev, "%s: Unsupported vlan proto\n",
|
__func__);
|
return -EOPNOTSUPP;
|
}
|
break;
|
default:
|
netdev_err(dev, "%s: Unsupported vlan action\n",
|
__func__);
|
return -EOPNOTSUPP;
|
}
|
act_vlan = true;
|
}
|
break;
|
case FLOW_ACTION_MANGLE: {
|
bool pedit_valid = valid_pedit_action(dev, act,
|
&natmode_flags);
|
|
if (!pedit_valid)
|
return -EOPNOTSUPP;
|
act_pedit = true;
|
}
|
break;
|
case FLOW_ACTION_QUEUE:
|
/* Do nothing. cxgb4_set_filter will validate */
|
break;
|
default:
|
netdev_err(dev, "%s: Unsupported action\n", __func__);
|
return -EOPNOTSUPP;
|
}
|
}
|
|
if ((act_pedit || act_vlan) && !act_redir) {
|
netdev_err(dev, "%s: pedit/vlan rewrite invalid without egress redirect\n",
|
__func__);
|
return -EINVAL;
|
}
|
|
if (act_pedit) {
|
int ret;
|
|
ret = cxgb4_action_natmode_validate(adap, natmode_flags,
|
extack);
|
if (ret)
|
return ret;
|
}
|
|
return 0;
|
}
|
|
static void cxgb4_tc_flower_hash_prio_add(struct adapter *adap, u32 tc_prio)
|
{
|
spin_lock_bh(&adap->tids.ftid_lock);
|
if (adap->tids.tc_hash_tids_max_prio < tc_prio)
|
adap->tids.tc_hash_tids_max_prio = tc_prio;
|
spin_unlock_bh(&adap->tids.ftid_lock);
|
}
|
|
static void cxgb4_tc_flower_hash_prio_del(struct adapter *adap, u32 tc_prio)
|
{
|
struct tid_info *t = &adap->tids;
|
struct ch_tc_flower_entry *fe;
|
struct rhashtable_iter iter;
|
u32 found = 0;
|
|
spin_lock_bh(&t->ftid_lock);
|
/* Bail if the current rule is not the one with the max
|
* prio.
|
*/
|
if (t->tc_hash_tids_max_prio != tc_prio)
|
goto out_unlock;
|
|
/* Search for the next rule having the same or next lower
|
* max prio.
|
*/
|
rhashtable_walk_enter(&adap->flower_tbl, &iter);
|
do {
|
rhashtable_walk_start(&iter);
|
|
fe = rhashtable_walk_next(&iter);
|
while (!IS_ERR_OR_NULL(fe)) {
|
if (fe->fs.hash &&
|
fe->fs.tc_prio <= t->tc_hash_tids_max_prio) {
|
t->tc_hash_tids_max_prio = fe->fs.tc_prio;
|
found++;
|
|
/* Bail if we found another rule
|
* having the same prio as the
|
* current max one.
|
*/
|
if (fe->fs.tc_prio == tc_prio)
|
break;
|
}
|
|
fe = rhashtable_walk_next(&iter);
|
}
|
|
rhashtable_walk_stop(&iter);
|
} while (fe == ERR_PTR(-EAGAIN));
|
rhashtable_walk_exit(&iter);
|
|
if (!found)
|
t->tc_hash_tids_max_prio = 0;
|
|
out_unlock:
|
spin_unlock_bh(&t->ftid_lock);
|
}
|
|
int cxgb4_flow_rule_replace(struct net_device *dev, struct flow_rule *rule,
|
u32 tc_prio, struct netlink_ext_ack *extack,
|
struct ch_filter_specification *fs, u32 *tid)
|
{
|
struct adapter *adap = netdev2adap(dev);
|
struct filter_ctx ctx;
|
u8 inet_family;
|
int fidx, ret;
|
|
if (cxgb4_validate_flow_actions(dev, &rule->action, extack, 0))
|
return -EOPNOTSUPP;
|
|
if (cxgb4_validate_flow_match(dev, rule))
|
return -EOPNOTSUPP;
|
|
cxgb4_process_flow_match(dev, rule, fs);
|
cxgb4_process_flow_actions(dev, &rule->action, fs);
|
|
fs->hash = is_filter_exact_match(adap, fs);
|
inet_family = fs->type ? PF_INET6 : PF_INET;
|
|
/* Get a free filter entry TID, where we can insert this new
|
* rule. Only insert rule if its prio doesn't conflict with
|
* existing rules.
|
*/
|
fidx = cxgb4_get_free_ftid(dev, inet_family, fs->hash,
|
tc_prio);
|
if (fidx < 0) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"No free LETCAM index available");
|
return -ENOMEM;
|
}
|
|
if (fidx < adap->tids.nhpftids) {
|
fs->prio = 1;
|
fs->hash = 0;
|
}
|
|
/* If the rule can be inserted into HASH region, then ignore
|
* the index to normal FILTER region.
|
*/
|
if (fs->hash)
|
fidx = 0;
|
|
fs->tc_prio = tc_prio;
|
|
init_completion(&ctx.completion);
|
ret = __cxgb4_set_filter(dev, fidx, fs, &ctx);
|
if (ret) {
|
netdev_err(dev, "%s: filter creation err %d\n",
|
__func__, ret);
|
return ret;
|
}
|
|
/* Wait for reply */
|
ret = wait_for_completion_timeout(&ctx.completion, 10 * HZ);
|
if (!ret)
|
return -ETIMEDOUT;
|
|
/* Check if hw returned error for filter creation */
|
if (ctx.result)
|
return ctx.result;
|
|
*tid = ctx.tid;
|
|
if (fs->hash)
|
cxgb4_tc_flower_hash_prio_add(adap, tc_prio);
|
|
return 0;
|
}
|
|
int cxgb4_tc_flower_replace(struct net_device *dev,
|
struct flow_cls_offload *cls)
|
{
|
struct flow_rule *rule = flow_cls_offload_flow_rule(cls);
|
struct netlink_ext_ack *extack = cls->common.extack;
|
struct adapter *adap = netdev2adap(dev);
|
struct ch_tc_flower_entry *ch_flower;
|
struct ch_filter_specification *fs;
|
int ret;
|
|
ch_flower = allocate_flower_entry();
|
if (!ch_flower) {
|
netdev_err(dev, "%s: ch_flower alloc failed.\n", __func__);
|
return -ENOMEM;
|
}
|
|
fs = &ch_flower->fs;
|
fs->hitcnts = 1;
|
fs->tc_cookie = cls->cookie;
|
|
ret = cxgb4_flow_rule_replace(dev, rule, cls->common.prio, extack, fs,
|
&ch_flower->filter_id);
|
if (ret)
|
goto free_entry;
|
|
ch_flower->tc_flower_cookie = cls->cookie;
|
ret = rhashtable_insert_fast(&adap->flower_tbl, &ch_flower->node,
|
adap->flower_ht_params);
|
if (ret)
|
goto del_filter;
|
|
return 0;
|
|
del_filter:
|
if (fs->hash)
|
cxgb4_tc_flower_hash_prio_del(adap, cls->common.prio);
|
|
cxgb4_del_filter(dev, ch_flower->filter_id, &ch_flower->fs);
|
|
free_entry:
|
kfree(ch_flower);
|
return ret;
|
}
|
|
int cxgb4_flow_rule_destroy(struct net_device *dev, u32 tc_prio,
|
struct ch_filter_specification *fs, int tid)
|
{
|
struct adapter *adap = netdev2adap(dev);
|
u8 hash;
|
int ret;
|
|
hash = fs->hash;
|
|
ret = cxgb4_del_filter(dev, tid, fs);
|
if (ret)
|
return ret;
|
|
if (hash)
|
cxgb4_tc_flower_hash_prio_del(adap, tc_prio);
|
|
return ret;
|
}
|
|
int cxgb4_tc_flower_destroy(struct net_device *dev,
|
struct flow_cls_offload *cls)
|
{
|
struct adapter *adap = netdev2adap(dev);
|
struct ch_tc_flower_entry *ch_flower;
|
int ret;
|
|
ch_flower = ch_flower_lookup(adap, cls->cookie);
|
if (!ch_flower)
|
return -ENOENT;
|
|
rhashtable_remove_fast(&adap->flower_tbl, &ch_flower->node,
|
adap->flower_ht_params);
|
|
ret = cxgb4_flow_rule_destroy(dev, ch_flower->fs.tc_prio,
|
&ch_flower->fs, ch_flower->filter_id);
|
if (ret)
|
netdev_err(dev, "Flow rule destroy failed for tid: %u, ret: %d",
|
ch_flower->filter_id, ret);
|
|
kfree_rcu(ch_flower, rcu);
|
return ret;
|
}
|
|
static void ch_flower_stats_handler(struct work_struct *work)
|
{
|
struct adapter *adap = container_of(work, struct adapter,
|
flower_stats_work);
|
struct ch_tc_flower_entry *flower_entry;
|
struct ch_tc_flower_stats *ofld_stats;
|
struct rhashtable_iter iter;
|
u64 packets;
|
u64 bytes;
|
int ret;
|
|
rhashtable_walk_enter(&adap->flower_tbl, &iter);
|
do {
|
rhashtable_walk_start(&iter);
|
|
while ((flower_entry = rhashtable_walk_next(&iter)) &&
|
!IS_ERR(flower_entry)) {
|
ret = cxgb4_get_filter_counters(adap->port[0],
|
flower_entry->filter_id,
|
&packets, &bytes,
|
flower_entry->fs.hash);
|
if (!ret) {
|
spin_lock(&flower_entry->lock);
|
ofld_stats = &flower_entry->stats;
|
|
if (ofld_stats->prev_packet_count != packets) {
|
ofld_stats->prev_packet_count = packets;
|
ofld_stats->last_used = jiffies;
|
}
|
spin_unlock(&flower_entry->lock);
|
}
|
}
|
|
rhashtable_walk_stop(&iter);
|
|
} while (flower_entry == ERR_PTR(-EAGAIN));
|
rhashtable_walk_exit(&iter);
|
mod_timer(&adap->flower_stats_timer, jiffies + STATS_CHECK_PERIOD);
|
}
|
|
static void ch_flower_stats_cb(struct timer_list *t)
|
{
|
struct adapter *adap = from_timer(adap, t, flower_stats_timer);
|
|
schedule_work(&adap->flower_stats_work);
|
}
|
|
int cxgb4_tc_flower_stats(struct net_device *dev,
|
struct flow_cls_offload *cls)
|
{
|
struct adapter *adap = netdev2adap(dev);
|
struct ch_tc_flower_stats *ofld_stats;
|
struct ch_tc_flower_entry *ch_flower;
|
u64 packets;
|
u64 bytes;
|
int ret;
|
|
ch_flower = ch_flower_lookup(adap, cls->cookie);
|
if (!ch_flower) {
|
ret = -ENOENT;
|
goto err;
|
}
|
|
ret = cxgb4_get_filter_counters(dev, ch_flower->filter_id,
|
&packets, &bytes,
|
ch_flower->fs.hash);
|
if (ret < 0)
|
goto err;
|
|
spin_lock_bh(&ch_flower->lock);
|
ofld_stats = &ch_flower->stats;
|
if (ofld_stats->packet_count != packets) {
|
if (ofld_stats->prev_packet_count != packets)
|
ofld_stats->last_used = jiffies;
|
flow_stats_update(&cls->stats, bytes - ofld_stats->byte_count,
|
packets - ofld_stats->packet_count, 0,
|
ofld_stats->last_used,
|
FLOW_ACTION_HW_STATS_IMMEDIATE);
|
|
ofld_stats->packet_count = packets;
|
ofld_stats->byte_count = bytes;
|
ofld_stats->prev_packet_count = packets;
|
}
|
spin_unlock_bh(&ch_flower->lock);
|
return 0;
|
|
err:
|
return ret;
|
}
|
|
static const struct rhashtable_params cxgb4_tc_flower_ht_params = {
|
.nelem_hint = 384,
|
.head_offset = offsetof(struct ch_tc_flower_entry, node),
|
.key_offset = offsetof(struct ch_tc_flower_entry, tc_flower_cookie),
|
.key_len = sizeof(((struct ch_tc_flower_entry *)0)->tc_flower_cookie),
|
.max_size = 524288,
|
.min_size = 512,
|
.automatic_shrinking = true
|
};
|
|
int cxgb4_init_tc_flower(struct adapter *adap)
|
{
|
int ret;
|
|
if (adap->tc_flower_initialized)
|
return -EEXIST;
|
|
adap->flower_ht_params = cxgb4_tc_flower_ht_params;
|
ret = rhashtable_init(&adap->flower_tbl, &adap->flower_ht_params);
|
if (ret)
|
return ret;
|
|
INIT_WORK(&adap->flower_stats_work, ch_flower_stats_handler);
|
timer_setup(&adap->flower_stats_timer, ch_flower_stats_cb, 0);
|
mod_timer(&adap->flower_stats_timer, jiffies + STATS_CHECK_PERIOD);
|
adap->tc_flower_initialized = true;
|
return 0;
|
}
|
|
void cxgb4_cleanup_tc_flower(struct adapter *adap)
|
{
|
if (!adap->tc_flower_initialized)
|
return;
|
|
if (adap->flower_stats_timer.function)
|
del_timer_sync(&adap->flower_stats_timer);
|
cancel_work_sync(&adap->flower_stats_work);
|
rhashtable_destroy(&adap->flower_tbl);
|
adap->tc_flower_initialized = false;
|
}
|
