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linux / linux / kernel / git / torvalds / linux / 61231eb8113ce47991f35024f9c20810b37996bf / . / drivers / net / ethernet / marvell / octeontx2 / nic / otx2_tc.c
blob: 87bdb93cb066e9afba84e5a93556c1efa0d780d9 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/* Marvell RVU Ethernet driver
*
* Copyright (C) 2021 Marvell.
*
*/
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/inetdevice.h>
#include <linux/rhashtable.h>
#include <linux/bitfield.h>
#include <net/flow_dissector.h>
#include <net/pkt_cls.h>
#include <net/tc_act/tc_gact.h>
#include <net/tc_act/tc_mirred.h>
#include <net/tc_act/tc_vlan.h>
#include <net/ipv6.h>
#include "cn10k.h"
#include "otx2_common.h"
#include "qos.h"
#define CN10K_MAX_BURST_MANTISSA 0x7FFFULL
#define CN10K_MAX_BURST_SIZE 8453888ULL
#define CN10K_TLX_BURST_MANTISSA GENMASK_ULL(43, 29)
#define CN10K_TLX_BURST_EXPONENT GENMASK_ULL(47, 44)
#define OTX2_UNSUPP_LSE_DEPTH GENMASK(6, 4)
#define MCAST_INVALID_GRP (-1U)
struct otx2_tc_flow_stats {
u64 bytes;
u64 pkts;
u64 used;
};
struct otx2_tc_flow {
struct list_head list;
unsigned long cookie;
struct rcu_head rcu;
struct otx2_tc_flow_stats stats;
spinlock_t lock; /* lock for stats */
u16 rq;
u16 entry;
u16 leaf_profile;
bool is_act_police;
u32 prio;
struct npc_install_flow_req req;
u32 mcast_grp_idx;
u64 rate;
u32 burst;
bool is_pps;
};
static void otx2_get_egress_burst_cfg(struct otx2_nic *nic, u32 burst,
u32 *burst_exp, u32 *burst_mantissa)
{
int max_burst, max_mantissa;
unsigned int tmp;
if (is_dev_otx2(nic->pdev)) {
max_burst = MAX_BURST_SIZE;
max_mantissa = MAX_BURST_MANTISSA;
} else {
max_burst = CN10K_MAX_BURST_SIZE;
max_mantissa = CN10K_MAX_BURST_MANTISSA;
}
/* Burst is calculated as
* ((256 + BURST_MANTISSA) << (1 + BURST_EXPONENT)) / 256
* Max supported burst size is 130,816 bytes.
*/
burst = min_t(u32, burst, max_burst);
if (burst) {
*burst_exp = ilog2(burst) ? ilog2(burst) - 1 : 0;
tmp = burst - rounddown_pow_of_two(burst);
if (burst < max_mantissa)
*burst_mantissa = tmp * 2;
else
*burst_mantissa = tmp / (1ULL << (*burst_exp - 7));
} else {
*burst_exp = MAX_BURST_EXPONENT;
*burst_mantissa = max_mantissa;
}
}
static void otx2_get_egress_rate_cfg(u64 maxrate, u32 *exp,
u32 *mantissa, u32 *div_exp)
{
u64 tmp;
/* Rate calculation by hardware
*
* PIR_ADD = ((256 + mantissa) << exp) / 256
* rate = (2 * PIR_ADD) / ( 1 << div_exp)
* The resultant rate is in Mbps.
*/
/* 2Mbps to 100Gbps can be expressed with div_exp = 0.
* Setting this to '0' will ease the calculation of
* exponent and mantissa.
*/
*div_exp = 0;
if (maxrate) {
*exp = ilog2(maxrate) ? ilog2(maxrate) - 1 : 0;
tmp = maxrate - rounddown_pow_of_two(maxrate);
if (maxrate < MAX_RATE_MANTISSA)
*mantissa = tmp * 2;
else
*mantissa = tmp / (1ULL << (*exp - 7));
} else {
/* Instead of disabling rate limiting, set all values to max */
*exp = MAX_RATE_EXPONENT;
*mantissa = MAX_RATE_MANTISSA;
}
}
u64 otx2_get_txschq_rate_regval(struct otx2_nic *nic,
u64 maxrate, u32 burst)
{
u32 burst_exp, burst_mantissa;
u32 exp, mantissa, div_exp;
u64 regval = 0;
/* Get exponent and mantissa values from the desired rate */
otx2_get_egress_burst_cfg(nic, burst, &burst_exp, &burst_mantissa);
otx2_get_egress_rate_cfg(maxrate, &exp, &mantissa, &div_exp);
if (is_dev_otx2(nic->pdev)) {
regval = FIELD_PREP(TLX_BURST_EXPONENT, (u64)burst_exp) |
FIELD_PREP(TLX_BURST_MANTISSA, (u64)burst_mantissa) |
FIELD_PREP(TLX_RATE_DIVIDER_EXPONENT, div_exp) |
FIELD_PREP(TLX_RATE_EXPONENT, exp) |
FIELD_PREP(TLX_RATE_MANTISSA, mantissa) | BIT_ULL(0);
} else {
regval = FIELD_PREP(CN10K_TLX_BURST_EXPONENT, (u64)burst_exp) |
FIELD_PREP(CN10K_TLX_BURST_MANTISSA, (u64)burst_mantissa) |
FIELD_PREP(TLX_RATE_DIVIDER_EXPONENT, div_exp) |
FIELD_PREP(TLX_RATE_EXPONENT, exp) |
FIELD_PREP(TLX_RATE_MANTISSA, mantissa) | BIT_ULL(0);
}
return regval;
}
static int otx2_set_matchall_egress_rate(struct otx2_nic *nic,
u32 burst, u64 maxrate)
{
struct otx2_hw *hw = &nic->hw;
struct nix_txschq_config *req;
int txschq, err;
/* All SQs share the same TL4, so pick the first scheduler */
txschq = hw->txschq_list[NIX_TXSCH_LVL_TL4][0];
mutex_lock(&nic->mbox.lock);
req = otx2_mbox_alloc_msg_nix_txschq_cfg(&nic->mbox);
if (!req) {
mutex_unlock(&nic->mbox.lock);
return -ENOMEM;
}
req->lvl = NIX_TXSCH_LVL_TL4;
req->num_regs = 1;
req->reg[0] = NIX_AF_TL4X_PIR(txschq);
req->regval[0] = otx2_get_txschq_rate_regval(nic, maxrate, burst);
err = otx2_sync_mbox_msg(&nic->mbox);
mutex_unlock(&nic->mbox.lock);
return err;
}
static int otx2_tc_validate_flow(struct otx2_nic *nic,
struct flow_action *actions,
struct netlink_ext_ack *extack)
{
if (nic->flags & OTX2_FLAG_INTF_DOWN) {
NL_SET_ERR_MSG_MOD(extack, "Interface not initialized");
return -EINVAL;
}
if (!flow_action_has_entries(actions)) {
NL_SET_ERR_MSG_MOD(extack, "MATCHALL offload called with no action");
return -EINVAL;
}
if (!flow_offload_has_one_action(actions)) {
NL_SET_ERR_MSG_MOD(extack,
"Egress MATCHALL offload supports only 1 policing action");
return -EINVAL;
}
return 0;
}
static int otx2_policer_validate(const struct flow_action *action,
const struct flow_action_entry *act,
struct netlink_ext_ack *extack)
{
if (act->police.exceed.act_id != FLOW_ACTION_DROP) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when exceed action is not drop");
return -EOPNOTSUPP;
}
if (act->police.notexceed.act_id != FLOW_ACTION_PIPE &&
act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when conform action is not pipe or ok");
return -EOPNOTSUPP;
}
if (act->police.notexceed.act_id == FLOW_ACTION_ACCEPT &&
!flow_action_is_last_entry(action, act)) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when conform action is ok, but action is not last");
return -EOPNOTSUPP;
}
if (act->police.peakrate_bytes_ps ||
act->police.avrate || act->police.overhead) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when peakrate/avrate/overhead is configured");
return -EOPNOTSUPP;
}
return 0;
}
static int otx2_tc_egress_matchall_install(struct otx2_nic *nic,
struct tc_cls_matchall_offload *cls)
{
struct netlink_ext_ack *extack = cls->common.extack;
struct flow_action *actions = &cls->rule->action;
struct flow_action_entry *entry;
int err;
err = otx2_tc_validate_flow(nic, actions, extack);
if (err)
return err;
if (nic->flags & OTX2_FLAG_TC_MATCHALL_EGRESS_ENABLED) {
NL_SET_ERR_MSG_MOD(extack,
"Only one Egress MATCHALL ratelimiter can be offloaded");
return -ENOMEM;
}
entry = &cls->rule->action.entries[0];
switch (entry->id) {
case FLOW_ACTION_POLICE:
err = otx2_policer_validate(&cls->rule->action, entry, extack);
if (err)
return err;
if (entry->police.rate_pkt_ps) {
NL_SET_ERR_MSG_MOD(extack, "QoS offload not support packets per second");
return -EOPNOTSUPP;
}
err = otx2_set_matchall_egress_rate(nic, entry->police.burst,
otx2_convert_rate(entry->police.rate_bytes_ps));
if (err)
return err;
nic->flags |= OTX2_FLAG_TC_MATCHALL_EGRESS_ENABLED;
break;
default:
NL_SET_ERR_MSG_MOD(extack,
"Only police action is supported with Egress MATCHALL offload");
return -EOPNOTSUPP;
}
return 0;
}
static int otx2_tc_egress_matchall_delete(struct otx2_nic *nic,
struct tc_cls_matchall_offload *cls)
{
struct netlink_ext_ack *extack = cls->common.extack;
int err;
if (nic->flags & OTX2_FLAG_INTF_DOWN) {
NL_SET_ERR_MSG_MOD(extack, "Interface not initialized");
return -EINVAL;
}
err = otx2_set_matchall_egress_rate(nic, 0, 0);
nic->flags &= ~OTX2_FLAG_TC_MATCHALL_EGRESS_ENABLED;
return err;
}
static int otx2_tc_act_set_hw_police(struct otx2_nic *nic,
struct otx2_tc_flow *node)
{
int rc;
mutex_lock(&nic->mbox.lock);
rc = cn10k_alloc_leaf_profile(nic, &node->leaf_profile);
if (rc) {
mutex_unlock(&nic->mbox.lock);
return rc;
}
rc = cn10k_set_ipolicer_rate(nic, node->leaf_profile,
node->burst, node->rate, node->is_pps);
if (rc)
goto free_leaf;
rc = cn10k_map_unmap_rq_policer(nic, node->rq, node->leaf_profile, true);
if (rc)
goto free_leaf;
mutex_unlock(&nic->mbox.lock);
return 0;
free_leaf:
if (cn10k_free_leaf_profile(nic, node->leaf_profile))
netdev_err(nic->netdev,
"Unable to free leaf bandwidth profile(%d)\n",
node->leaf_profile);
mutex_unlock(&nic->mbox.lock);
return rc;
}
static int otx2_tc_act_set_police(struct otx2_nic *nic,
struct otx2_tc_flow *node,
struct flow_cls_offload *f,
u64 rate, u32 burst, u32 mark,
struct npc_install_flow_req *req, bool pps)
{
struct netlink_ext_ack *extack = f->common.extack;
struct otx2_hw *hw = &nic->hw;
int rq_idx, rc;
rq_idx = find_first_zero_bit(&nic->rq_bmap, hw->rx_queues);
if (rq_idx >= hw->rx_queues) {
NL_SET_ERR_MSG_MOD(extack, "Police action rules exceeded");
return -EINVAL;
}
req->match_id = mark & 0xFFFFULL;
req->index = rq_idx;
req->op = NIX_RX_ACTIONOP_UCAST;
node->is_act_police = true;
node->rq = rq_idx;
node->burst = burst;
node->rate = rate;
node->is_pps = pps;
rc = otx2_tc_act_set_hw_police(nic, node);
if (!rc)
set_bit(rq_idx, &nic->rq_bmap);
return rc;
}
static int otx2_tc_update_mcast(struct otx2_nic *nic,
struct npc_install_flow_req *req,
struct netlink_ext_ack *extack,
struct otx2_tc_flow *node,
struct nix_mcast_grp_update_req *ureq,
u8 num_intf)
{
struct nix_mcast_grp_update_req *grp_update_req;
struct nix_mcast_grp_create_req *creq;
struct nix_mcast_grp_create_rsp *crsp;
u32 grp_index;
int rc;
mutex_lock(&nic->mbox.lock);
creq = otx2_mbox_alloc_msg_nix_mcast_grp_create(&nic->mbox);
if (!creq) {
rc = -ENOMEM;
goto error;
}
creq->dir = NIX_MCAST_INGRESS;
/* Send message to AF */
rc = otx2_sync_mbox_msg(&nic->mbox);
if (rc) {
NL_SET_ERR_MSG_MOD(extack, "Failed to create multicast group");
goto error;
}
crsp = (struct nix_mcast_grp_create_rsp *)otx2_mbox_get_rsp(&nic->mbox.mbox,
0,
&creq->hdr);
if (IS_ERR(crsp)) {
rc = PTR_ERR(crsp);
goto error;
}
grp_index = crsp->mcast_grp_idx;
grp_update_req = otx2_mbox_alloc_msg_nix_mcast_grp_update(&nic->mbox);
if (!grp_update_req) {
NL_SET_ERR_MSG_MOD(extack, "Failed to update multicast group");
rc = -ENOMEM;
goto error;
}
ureq->op = NIX_MCAST_OP_ADD_ENTRY;
ureq->mcast_grp_idx = grp_index;
ureq->num_mce_entry = num_intf;
ureq->pcifunc[0] = nic->pcifunc;
ureq->channel[0] = nic->hw.tx_chan_base;
ureq->dest_type[0] = NIX_RX_RSS;
ureq->rq_rss_index[0] = 0;
memcpy(&ureq->hdr, &grp_update_req->hdr, sizeof(struct mbox_msghdr));
memcpy(grp_update_req, ureq, sizeof(struct nix_mcast_grp_update_req));
/* Send message to AF */
rc = otx2_sync_mbox_msg(&nic->mbox);
if (rc) {
NL_SET_ERR_MSG_MOD(extack, "Failed to update multicast group");
goto error;
}
mutex_unlock(&nic->mbox.lock);
req->op = NIX_RX_ACTIONOP_MCAST;
req->index = grp_index;
node->mcast_grp_idx = grp_index;
return 0;
error:
mutex_unlock(&nic->mbox.lock);
return rc;
}
static int otx2_tc_parse_actions(struct otx2_nic *nic,
struct flow_action *flow_action,
struct npc_install_flow_req *req,
struct flow_cls_offload *f,
struct otx2_tc_flow *node)
{
struct nix_mcast_grp_update_req dummy_grp_update_req = { 0 };
struct netlink_ext_ack *extack = f->common.extack;
bool pps = false, mcast = false;
struct flow_action_entry *act;
struct net_device *target;
struct otx2_nic *priv;
u32 burst, mark = 0;
u8 nr_police = 0;
u8 num_intf = 1;
int err, i;
u64 rate;
if (!flow_action_has_entries(flow_action)) {
NL_SET_ERR_MSG_MOD(extack, "no tc actions specified");
return -EINVAL;
}
flow_action_for_each(i, act, flow_action) {
switch (act->id) {
case FLOW_ACTION_DROP:
req->op = NIX_RX_ACTIONOP_DROP;
return 0;
case FLOW_ACTION_ACCEPT:
req->op = NIX_RX_ACTION_DEFAULT;
return 0;
case FLOW_ACTION_REDIRECT_INGRESS:
target = act->dev;
priv = netdev_priv(target);
/* npc_install_flow_req doesn't support passing a target pcifunc */
if (rvu_get_pf(nic->pcifunc) != rvu_get_pf(priv->pcifunc)) {
NL_SET_ERR_MSG_MOD(extack,
"can't redirect to other pf/vf");
return -EOPNOTSUPP;
}
req->vf = priv->pcifunc & RVU_PFVF_FUNC_MASK;
/* if op is already set; avoid overwriting the same */
if (!req->op)
req->op = NIX_RX_ACTION_DEFAULT;
break;
case FLOW_ACTION_VLAN_POP:
req->vtag0_valid = true;
/* use RX_VTAG_TYPE7 which is initialized to strip vlan tag */
req->vtag0_type = NIX_AF_LFX_RX_VTAG_TYPE7;
break;
case FLOW_ACTION_POLICE:
/* Ingress ratelimiting is not supported on OcteonTx2 */
if (is_dev_otx2(nic->pdev)) {
NL_SET_ERR_MSG_MOD(extack,
"Ingress policing not supported on this platform");
return -EOPNOTSUPP;
}
err = otx2_policer_validate(flow_action, act, extack);
if (err)
return err;
if (act->police.rate_bytes_ps > 0) {
rate = act->police.rate_bytes_ps * 8;
burst = act->police.burst;
} else if (act->police.rate_pkt_ps > 0) {
/* The algorithm used to calculate rate
* mantissa, exponent values for a given token
* rate (token can be byte or packet) requires
* token rate to be mutiplied by 8.
*/
rate = act->police.rate_pkt_ps * 8;
burst = act->police.burst_pkt;
pps = true;
}
nr_police++;
break;
case FLOW_ACTION_MARK:
mark = act->mark;
break;
case FLOW_ACTION_RX_QUEUE_MAPPING:
req->op = NIX_RX_ACTIONOP_UCAST;
req->index = act->rx_queue;
break;
case FLOW_ACTION_MIRRED_INGRESS:
target = act->dev;
priv = netdev_priv(target);
dummy_grp_update_req.pcifunc[num_intf] = priv->pcifunc;
dummy_grp_update_req.channel[num_intf] = priv->hw.tx_chan_base;
dummy_grp_update_req.dest_type[num_intf] = NIX_RX_RSS;
dummy_grp_update_req.rq_rss_index[num_intf] = 0;
mcast = true;
num_intf++;
break;
default:
return -EOPNOTSUPP;
}
}
if (mcast) {
err = otx2_tc_update_mcast(nic, req, extack, node,
&dummy_grp_update_req,
num_intf);
if (err)
return err;
}
if (nr_police > 1) {
NL_SET_ERR_MSG_MOD(extack,
"rate limit police offload requires a single action");
return -EOPNOTSUPP;
}
if (nr_police)
return otx2_tc_act_set_police(nic, node, f, rate, burst,
mark, req, pps);
return 0;
}
static int otx2_tc_process_vlan(struct otx2_nic *nic, struct flow_msg *flow_spec,
struct flow_msg *flow_mask, struct flow_rule *rule,
struct npc_install_flow_req *req, bool is_inner)
{
struct flow_match_vlan match;
u16 vlan_tci, vlan_tci_mask;
if (is_inner)
flow_rule_match_cvlan(rule, &match);
else
flow_rule_match_vlan(rule, &match);
if (!eth_type_vlan(match.key->vlan_tpid)) {
netdev_err(nic->netdev, "vlan tpid 0x%x not supported\n",
ntohs(match.key->vlan_tpid));
return -EOPNOTSUPP;
}
if (!match.mask->vlan_id) {
struct flow_action_entry *act;
int i;
flow_action_for_each(i, act, &rule->action) {
if (act->id == FLOW_ACTION_DROP) {
netdev_err(nic->netdev,
"vlan tpid 0x%x with vlan_id %d is not supported for DROP rule.\n",
ntohs(match.key->vlan_tpid), match.key->vlan_id);
return -EOPNOTSUPP;
}
}
}
if (match.mask->vlan_id ||
match.mask->vlan_dei ||
match.mask->vlan_priority) {
vlan_tci = match.key->vlan_id |
match.key->vlan_dei << 12 |
match.key->vlan_priority << 13;
vlan_tci_mask = match.mask->vlan_id |
match.mask->vlan_dei << 12 |
match.mask->vlan_priority << 13;
if (is_inner) {
flow_spec->vlan_itci = htons(vlan_tci);
flow_mask->vlan_itci = htons(vlan_tci_mask);
req->features |= BIT_ULL(NPC_INNER_VID);
} else {
flow_spec->vlan_tci = htons(vlan_tci);
flow_mask->vlan_tci = htons(vlan_tci_mask);
req->features |= BIT_ULL(NPC_OUTER_VID);
}
}
return 0;
}
static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
struct flow_cls_offload *f,
struct npc_install_flow_req *req)
{
struct netlink_ext_ack *extack = f->common.extack;
struct flow_msg *flow_spec = &req->packet;
struct flow_msg *flow_mask = &req->mask;
struct flow_dissector *dissector;
struct flow_rule *rule;
u8 ip_proto = 0;
rule = flow_cls_offload_flow_rule(f);
dissector = rule->match.dissector;
if ((dissector->used_keys &
~(BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL) |
BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) |
BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_VLAN) |
BIT(FLOW_DISSECTOR_KEY_CVLAN) |
BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) |
BIT(FLOW_DISSECTOR_KEY_IPSEC) |
BIT_ULL(FLOW_DISSECTOR_KEY_MPLS) |
BIT_ULL(FLOW_DISSECTOR_KEY_ICMP) |
BIT_ULL(FLOW_DISSECTOR_KEY_TCP) |
BIT_ULL(FLOW_DISSECTOR_KEY_IP)))) {
netdev_info(nic->netdev, "unsupported flow used key 0x%llx",
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);
/* All EtherTypes can be matched, no hw limitation */
flow_spec->etype = match.key->n_proto;
flow_mask->etype = match.mask->n_proto;
req->features |= BIT_ULL(NPC_ETYPE);
if (match.mask->ip_proto &&
(match.key->ip_proto != IPPROTO_TCP &&
match.key->ip_proto != IPPROTO_UDP &&
match.key->ip_proto != IPPROTO_SCTP &&
match.key->ip_proto != IPPROTO_ICMP &&
match.key->ip_proto != IPPROTO_ESP &&
match.key->ip_proto != IPPROTO_AH &&
match.key->ip_proto != IPPROTO_ICMPV6)) {
netdev_info(nic->netdev,
"ip_proto=0x%x not supported\n",
match.key->ip_proto);
return -EOPNOTSUPP;
}
if (match.mask->ip_proto)
ip_proto = match.key->ip_proto;
if (ip_proto == IPPROTO_UDP)
req->features |= BIT_ULL(NPC_IPPROTO_UDP);
else if (ip_proto == IPPROTO_TCP)
req->features |= BIT_ULL(NPC_IPPROTO_TCP);
else if (ip_proto == IPPROTO_SCTP)
req->features |= BIT_ULL(NPC_IPPROTO_SCTP);
else if (ip_proto == IPPROTO_ICMP)
req->features |= BIT_ULL(NPC_IPPROTO_ICMP);
else if (ip_proto == IPPROTO_ICMPV6)
req->features |= BIT_ULL(NPC_IPPROTO_ICMP6);
else if (ip_proto == IPPROTO_ESP)
req->features |= BIT_ULL(NPC_IPPROTO_ESP);
else if (ip_proto == IPPROTO_AH)
req->features |= BIT_ULL(NPC_IPPROTO_AH);
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
struct flow_match_control match;
flow_rule_match_control(rule, &match);
if (match.mask->flags & FLOW_DIS_FIRST_FRAG) {
NL_SET_ERR_MSG_MOD(extack, "HW doesn't support frag first/later");
return -EOPNOTSUPP;
}
if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) {
if (ntohs(flow_spec->etype) == ETH_P_IP) {
flow_spec->ip_flag = IPV4_FLAG_MORE;
flow_mask->ip_flag = IPV4_FLAG_MORE;
req->features |= BIT_ULL(NPC_IPFRAG_IPV4);
} else if (ntohs(flow_spec->etype) == ETH_P_IPV6) {
flow_spec->next_header = IPPROTO_FRAGMENT;
flow_mask->next_header = 0xff;
req->features |= BIT_ULL(NPC_IPFRAG_IPV6);
} else {
NL_SET_ERR_MSG_MOD(extack, "flow-type should be either IPv4 and IPv6");
return -EOPNOTSUPP;
}
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
struct flow_match_eth_addrs match;
flow_rule_match_eth_addrs(rule, &match);
if (!is_zero_ether_addr(match.mask->src)) {
NL_SET_ERR_MSG_MOD(extack, "src mac match not supported");
return -EOPNOTSUPP;
}
if (!is_zero_ether_addr(match.mask->dst)) {
ether_addr_copy(flow_spec->dmac, (u8 *)&match.key->dst);
ether_addr_copy(flow_mask->dmac,
(u8 *)&match.mask->dst);
req->features |= BIT_ULL(NPC_DMAC);
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPSEC)) {
struct flow_match_ipsec match;
flow_rule_match_ipsec(rule, &match);
if (!match.mask->spi) {
NL_SET_ERR_MSG_MOD(extack, "spi index not specified");
return -EOPNOTSUPP;
}
if (ip_proto != IPPROTO_ESP &&
ip_proto != IPPROTO_AH) {
NL_SET_ERR_MSG_MOD(extack,
"SPI index is valid only for ESP/AH proto");
return -EOPNOTSUPP;
}
flow_spec->spi = match.key->spi;
flow_mask->spi = match.mask->spi;
req->features |= BIT_ULL(NPC_IPSEC_SPI);
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
struct flow_match_ip match;
flow_rule_match_ip(rule, &match);
if ((ntohs(flow_spec->etype) != ETH_P_IP) &&
match.mask->tos) {
NL_SET_ERR_MSG_MOD(extack, "tos not supported");
return -EOPNOTSUPP;
}
if (match.mask->ttl) {
NL_SET_ERR_MSG_MOD(extack, "ttl not supported");
return -EOPNOTSUPP;
}
flow_spec->tos = match.key->tos;
flow_mask->tos = match.mask->tos;
req->features |= BIT_ULL(NPC_TOS);
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
int ret;
ret = otx2_tc_process_vlan(nic, flow_spec, flow_mask, rule, req, false);
if (ret)
return ret;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
int ret;
ret = otx2_tc_process_vlan(nic, flow_spec, flow_mask, rule, req, true);
if (ret)
return ret;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV4_ADDRS)) {
struct flow_match_ipv4_addrs match;
flow_rule_match_ipv4_addrs(rule, &match);
flow_spec->ip4dst = match.key->dst;
flow_mask->ip4dst = match.mask->dst;
req->features |= BIT_ULL(NPC_DIP_IPV4);
flow_spec->ip4src = match.key->src;
flow_mask->ip4src = match.mask->src;
req->features |= BIT_ULL(NPC_SIP_IPV4);
} else if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV6_ADDRS)) {
struct flow_match_ipv6_addrs match;
flow_rule_match_ipv6_addrs(rule, &match);
if (ipv6_addr_loopback(&match.key->dst) ||
ipv6_addr_loopback(&match.key->src)) {
NL_SET_ERR_MSG_MOD(extack,
"Flow matching IPv6 loopback addr not supported");
return -EOPNOTSUPP;
}
if (!ipv6_addr_any(&match.mask->dst)) {
memcpy(&flow_spec->ip6dst,
(struct in6_addr *)&match.key->dst,
sizeof(flow_spec->ip6dst));
memcpy(&flow_mask->ip6dst,
(struct in6_addr *)&match.mask->dst,
sizeof(flow_spec->ip6dst));
req->features |= BIT_ULL(NPC_DIP_IPV6);
}
if (!ipv6_addr_any(&match.mask->src)) {
memcpy(&flow_spec->ip6src,
(struct in6_addr *)&match.key->src,
sizeof(flow_spec->ip6src));
memcpy(&flow_mask->ip6src,
(struct in6_addr *)&match.mask->src,
sizeof(flow_spec->ip6src));
req->features |= BIT_ULL(NPC_SIP_IPV6);
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
struct flow_match_ports match;
flow_rule_match_ports(rule, &match);
flow_spec->dport = match.key->dst;
flow_mask->dport = match.mask->dst;
if (flow_mask->dport) {
if (ip_proto == IPPROTO_UDP)
req->features |= BIT_ULL(NPC_DPORT_UDP);
else if (ip_proto == IPPROTO_TCP)
req->features |= BIT_ULL(NPC_DPORT_TCP);
else if (ip_proto == IPPROTO_SCTP)
req->features |= BIT_ULL(NPC_DPORT_SCTP);
}
flow_spec->sport = match.key->src;
flow_mask->sport = match.mask->src;
if (flow_mask->sport) {
if (ip_proto == IPPROTO_UDP)
req->features |= BIT_ULL(NPC_SPORT_UDP);
else if (ip_proto == IPPROTO_TCP)
req->features |= BIT_ULL(NPC_SPORT_TCP);
else if (ip_proto == IPPROTO_SCTP)
req->features |= BIT_ULL(NPC_SPORT_SCTP);
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) {
struct flow_match_tcp match;
flow_rule_match_tcp(rule, &match);
flow_spec->tcp_flags = match.key->flags;
flow_mask->tcp_flags = match.mask->flags;
req->features |= BIT_ULL(NPC_TCP_FLAGS);
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS)) {
struct flow_match_mpls match;
u8 bit;
flow_rule_match_mpls(rule, &match);
if (match.mask->used_lses & OTX2_UNSUPP_LSE_DEPTH) {
NL_SET_ERR_MSG_MOD(extack,
"unsupported LSE depth for MPLS match offload");
return -EOPNOTSUPP;
}
for_each_set_bit(bit, (unsigned long *)&match.mask->used_lses,
FLOW_DIS_MPLS_MAX) {
/* check if any of the fields LABEL,TC,BOS are set */
if (*((u32 *)&match.mask->ls[bit]) &
OTX2_FLOWER_MASK_MPLS_NON_TTL) {
/* Hardware will capture 4 byte MPLS header into
* two fields NPC_MPLSX_LBTCBOS and NPC_MPLSX_TTL.
* Derive the associated NPC key based on header
* index and offset.
*/
req->features |= BIT_ULL(NPC_MPLS1_LBTCBOS +
2 * bit);
flow_spec->mpls_lse[bit] =
FIELD_PREP(OTX2_FLOWER_MASK_MPLS_LB,
match.key->ls[bit].mpls_label) |
FIELD_PREP(OTX2_FLOWER_MASK_MPLS_TC,
match.key->ls[bit].mpls_tc) |
FIELD_PREP(OTX2_FLOWER_MASK_MPLS_BOS,
match.key->ls[bit].mpls_bos);
flow_mask->mpls_lse[bit] =
FIELD_PREP(OTX2_FLOWER_MASK_MPLS_LB,
match.mask->ls[bit].mpls_label) |
FIELD_PREP(OTX2_FLOWER_MASK_MPLS_TC,
match.mask->ls[bit].mpls_tc) |
FIELD_PREP(OTX2_FLOWER_MASK_MPLS_BOS,
match.mask->ls[bit].mpls_bos);
}
if (match.mask->ls[bit].mpls_ttl) {
req->features |= BIT_ULL(NPC_MPLS1_TTL +
2 * bit);
flow_spec->mpls_lse[bit] |=
FIELD_PREP(OTX2_FLOWER_MASK_MPLS_TTL,
match.key->ls[bit].mpls_ttl);
flow_mask->mpls_lse[bit] |=
FIELD_PREP(OTX2_FLOWER_MASK_MPLS_TTL,
match.mask->ls[bit].mpls_ttl);
}
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ICMP)) {
struct flow_match_icmp match;
flow_rule_match_icmp(rule, &match);
flow_spec->icmp_type = match.key->type;
flow_mask->icmp_type = match.mask->type;
req->features |= BIT_ULL(NPC_TYPE_ICMP);
flow_spec->icmp_code = match.key->code;
flow_mask->icmp_code = match.mask->code;
req->features |= BIT_ULL(NPC_CODE_ICMP);
}
return otx2_tc_parse_actions(nic, &rule->action, req, f, node);
}
static void otx2_destroy_tc_flow_list(struct otx2_nic *pfvf)
{
struct otx2_flow_config *flow_cfg = pfvf->flow_cfg;
struct otx2_tc_flow *iter, *tmp;
if (!(pfvf->flags & OTX2_FLAG_MCAM_ENTRIES_ALLOC))
return;
list_for_each_entry_safe(iter, tmp, &flow_cfg->flow_list_tc, list) {
list_del(&iter->list);
kfree(iter);
flow_cfg->nr_flows--;
}
}
static struct otx2_tc_flow *otx2_tc_get_entry_by_cookie(struct otx2_flow_config *flow_cfg,
unsigned long cookie)
{
struct otx2_tc_flow *tmp;
list_for_each_entry(tmp, &flow_cfg->flow_list_tc, list) {
if (tmp->cookie == cookie)
return tmp;
}
return NULL;
}
static struct otx2_tc_flow *otx2_tc_get_entry_by_index(struct otx2_flow_config *flow_cfg,
int index)
{
struct otx2_tc_flow *tmp;
int i = 0;
list_for_each_entry(tmp, &flow_cfg->flow_list_tc, list) {
if (i == index)
return tmp;
i++;
}
return NULL;
}
static void otx2_tc_del_from_flow_list(struct otx2_flow_config *flow_cfg,
struct otx2_tc_flow *node)
{
struct list_head *pos, *n;
struct otx2_tc_flow *tmp;
list_for_each_safe(pos, n, &flow_cfg->flow_list_tc) {
tmp = list_entry(pos, struct otx2_tc_flow, list);
if (node == tmp) {
list_del(&node->list);
return;
}
}
}
static int otx2_tc_add_to_flow_list(struct otx2_flow_config *flow_cfg,
struct otx2_tc_flow *node)
{
struct list_head *pos, *n;
struct otx2_tc_flow *tmp;
int index = 0;
/* If the flow list is empty then add the new node */
if (list_empty(&flow_cfg->flow_list_tc)) {
list_add(&node->list, &flow_cfg->flow_list_tc);
return index;
}
list_for_each_safe(pos, n, &flow_cfg->flow_list_tc) {
tmp = list_entry(pos, struct otx2_tc_flow, list);
if (node->prio < tmp->prio)
break;
index++;
}
list_add(&node->list, pos->prev);
return index;
}
static int otx2_add_mcam_flow_entry(struct otx2_nic *nic, struct npc_install_flow_req *req)
{
struct npc_install_flow_req *tmp_req;
int err;
mutex_lock(&nic->mbox.lock);
tmp_req = otx2_mbox_alloc_msg_npc_install_flow(&nic->mbox);
if (!tmp_req) {
mutex_unlock(&nic->mbox.lock);
return -ENOMEM;
}
memcpy(tmp_req, req, sizeof(struct npc_install_flow_req));
/* Send message to AF */
err = otx2_sync_mbox_msg(&nic->mbox);
if (err) {
netdev_err(nic->netdev, "Failed to install MCAM flow entry %d\n",
req->entry);
mutex_unlock(&nic->mbox.lock);
return -EFAULT;
}
mutex_unlock(&nic->mbox.lock);
return 0;
}
static int otx2_del_mcam_flow_entry(struct otx2_nic *nic, u16 entry, u16 *cntr_val)
{
struct npc_delete_flow_rsp *rsp;
struct npc_delete_flow_req *req;
int err;
mutex_lock(&nic->mbox.lock);
req = otx2_mbox_alloc_msg_npc_delete_flow(&nic->mbox);
if (!req) {
mutex_unlock(&nic->mbox.lock);
return -ENOMEM;
}
req->entry = entry;
/* Send message to AF */
err = otx2_sync_mbox_msg(&nic->mbox);
if (err) {
netdev_err(nic->netdev, "Failed to delete MCAM flow entry %d\n",
entry);
mutex_unlock(&nic->mbox.lock);
return -EFAULT;
}
if (cntr_val) {
rsp = (struct npc_delete_flow_rsp *)otx2_mbox_get_rsp(&nic->mbox.mbox,
0, &req->hdr);
if (IS_ERR(rsp)) {
netdev_err(nic->netdev, "Failed to get MCAM delete response for entry %d\n",
entry);
mutex_unlock(&nic->mbox.lock);
return -EFAULT;
}
*cntr_val = rsp->cntr_val;
}
mutex_unlock(&nic->mbox.lock);
return 0;
}
static int otx2_tc_update_mcam_table_del_req(struct otx2_nic *nic,
struct otx2_flow_config *flow_cfg,
struct otx2_tc_flow *node)
{
struct list_head *pos, *n;
struct otx2_tc_flow *tmp;
int i = 0, index = 0;
u16 cntr_val = 0;
/* Find and delete the entry from the list and re-install
* all the entries from beginning to the index of the
* deleted entry to higher mcam indexes.
*/
list_for_each_safe(pos, n, &flow_cfg->flow_list_tc) {
tmp = list_entry(pos, struct otx2_tc_flow, list);
if (node == tmp) {
list_del(&tmp->list);
break;
}
otx2_del_mcam_flow_entry(nic, tmp->entry, &cntr_val);
tmp->entry++;
tmp->req.entry = tmp->entry;
tmp->req.cntr_val = cntr_val;
index++;
}
list_for_each_safe(pos, n, &flow_cfg->flow_list_tc) {
if (i == index)
break;
tmp = list_entry(pos, struct otx2_tc_flow, list);
otx2_add_mcam_flow_entry(nic, &tmp->req);
i++;
}
return 0;
}
static int otx2_tc_update_mcam_table_add_req(struct otx2_nic *nic,
struct otx2_flow_config *flow_cfg,
struct otx2_tc_flow *node)
{
int mcam_idx = flow_cfg->max_flows - flow_cfg->nr_flows - 1;
struct otx2_tc_flow *tmp;
int list_idx, i;
u16 cntr_val = 0;
/* Find the index of the entry(list_idx) whose priority
* is greater than the new entry and re-install all
* the entries from beginning to list_idx to higher
* mcam indexes.
*/
list_idx = otx2_tc_add_to_flow_list(flow_cfg, node);
for (i = 0; i < list_idx; i++) {
tmp = otx2_tc_get_entry_by_index(flow_cfg, i);
if (!tmp)
return -ENOMEM;
otx2_del_mcam_flow_entry(nic, tmp->entry, &cntr_val);
tmp->entry = flow_cfg->flow_ent[mcam_idx];
tmp->req.entry = tmp->entry;
tmp->req.cntr_val = cntr_val;
otx2_add_mcam_flow_entry(nic, &tmp->req);
mcam_idx++;
}
return mcam_idx;
}
static int otx2_tc_update_mcam_table(struct otx2_nic *nic,
struct otx2_flow_config *flow_cfg,
struct otx2_tc_flow *node,
bool add_req)
{
if (add_req)
return otx2_tc_update_mcam_table_add_req(nic, flow_cfg, node);
return otx2_tc_update_mcam_table_del_req(nic, flow_cfg, node);
}
static int otx2_tc_del_flow(struct otx2_nic *nic,
struct flow_cls_offload *tc_flow_cmd)
{
struct otx2_flow_config *flow_cfg = nic->flow_cfg;
struct nix_mcast_grp_destroy_req *grp_destroy_req;
struct otx2_tc_flow *flow_node;
int err;
flow_node = otx2_tc_get_entry_by_cookie(flow_cfg, tc_flow_cmd->cookie);
if (!flow_node) {
netdev_err(nic->netdev, "tc flow not found for cookie 0x%lx\n",
tc_flow_cmd->cookie);
return -EINVAL;
}
if (flow_node->is_act_police) {
__clear_bit(flow_node->rq, &nic->rq_bmap);
if (nic->flags & OTX2_FLAG_INTF_DOWN)
goto free_mcam_flow;
mutex_lock(&nic->mbox.lock);
err = cn10k_map_unmap_rq_policer(nic, flow_node->rq,
flow_node->leaf_profile, false);
if (err)
netdev_err(nic->netdev,
"Unmapping RQ %d & profile %d failed\n",
flow_node->rq, flow_node->leaf_profile);
err = cn10k_free_leaf_profile(nic, flow_node->leaf_profile);
if (err)
netdev_err(nic->netdev,
"Unable to free leaf bandwidth profile(%d)\n",
flow_node->leaf_profile);
mutex_unlock(&nic->mbox.lock);
}
/* Remove the multicast/mirror related nodes */
if (flow_node->mcast_grp_idx != MCAST_INVALID_GRP) {
mutex_lock(&nic->mbox.lock);
grp_destroy_req = otx2_mbox_alloc_msg_nix_mcast_grp_destroy(&nic->mbox);
grp_destroy_req->mcast_grp_idx = flow_node->mcast_grp_idx;
otx2_sync_mbox_msg(&nic->mbox);
mutex_unlock(&nic->mbox.lock);
}
free_mcam_flow:
otx2_del_mcam_flow_entry(nic, flow_node->entry, NULL);
otx2_tc_update_mcam_table(nic, flow_cfg, flow_node, false);
kfree_rcu(flow_node, rcu);
flow_cfg->nr_flows--;
return 0;
}
static int otx2_tc_add_flow(struct otx2_nic *nic,
struct flow_cls_offload *tc_flow_cmd)
{
struct netlink_ext_ack *extack = tc_flow_cmd->common.extack;
struct otx2_flow_config *flow_cfg = nic->flow_cfg;
struct otx2_tc_flow *new_node, *old_node;
struct npc_install_flow_req *req, dummy;
int rc, err, mcam_idx;
if (!(nic->flags & OTX2_FLAG_TC_FLOWER_SUPPORT))
return -ENOMEM;
if (nic->flags & OTX2_FLAG_INTF_DOWN) {
NL_SET_ERR_MSG_MOD(extack, "Interface not initialized");
return -EINVAL;
}
if (flow_cfg->nr_flows == flow_cfg->max_flows) {
NL_SET_ERR_MSG_MOD(extack,
"Free MCAM entry not available to add the flow");
return -ENOMEM;
}
/* allocate memory for the new flow and it's node */
new_node = kzalloc(sizeof(*new_node), GFP_KERNEL);
if (!new_node)
return -ENOMEM;
spin_lock_init(&new_node->lock);
new_node->cookie = tc_flow_cmd->cookie;
new_node->prio = tc_flow_cmd->common.prio;
new_node->mcast_grp_idx = MCAST_INVALID_GRP;
memset(&dummy, 0, sizeof(struct npc_install_flow_req));
rc = otx2_tc_prepare_flow(nic, new_node, tc_flow_cmd, &dummy);
if (rc) {
kfree_rcu(new_node, rcu);
return rc;
}
/* If a flow exists with the same cookie, delete it */
old_node = otx2_tc_get_entry_by_cookie(flow_cfg, tc_flow_cmd->cookie);
if (old_node)
otx2_tc_del_flow(nic, tc_flow_cmd);
mcam_idx = otx2_tc_update_mcam_table(nic, flow_cfg, new_node, true);
mutex_lock(&nic->mbox.lock);
req = otx2_mbox_alloc_msg_npc_install_flow(&nic->mbox);
if (!req) {
mutex_unlock(&nic->mbox.lock);
rc = -ENOMEM;
goto free_leaf;
}
memcpy(&dummy.hdr, &req->hdr, sizeof(struct mbox_msghdr));
memcpy(req, &dummy, sizeof(struct npc_install_flow_req));
req->channel = nic->hw.rx_chan_base;
req->entry = flow_cfg->flow_ent[mcam_idx];
req->intf = NIX_INTF_RX;
req->set_cntr = 1;
new_node->entry = req->entry;
/* Send message to AF */
rc = otx2_sync_mbox_msg(&nic->mbox);
if (rc) {
NL_SET_ERR_MSG_MOD(extack, "Failed to install MCAM flow entry");
mutex_unlock(&nic->mbox.lock);
goto free_leaf;
}
mutex_unlock(&nic->mbox.lock);
memcpy(&new_node->req, req, sizeof(struct npc_install_flow_req));
flow_cfg->nr_flows++;
return 0;
free_leaf:
otx2_tc_del_from_flow_list(flow_cfg, new_node);
kfree_rcu(new_node, rcu);
if (new_node->is_act_police) {
mutex_lock(&nic->mbox.lock);
err = cn10k_map_unmap_rq_policer(nic, new_node->rq,
new_node->leaf_profile, false);
if (err)
netdev_err(nic->netdev,
"Unmapping RQ %d & profile %d failed\n",
new_node->rq, new_node->leaf_profile);
err = cn10k_free_leaf_profile(nic, new_node->leaf_profile);
if (err)
netdev_err(nic->netdev,
"Unable to free leaf bandwidth profile(%d)\n",
new_node->leaf_profile);
__clear_bit(new_node->rq, &nic->rq_bmap);
mutex_unlock(&nic->mbox.lock);
}
return rc;
}
static int otx2_tc_get_flow_stats(struct otx2_nic *nic,
struct flow_cls_offload *tc_flow_cmd)
{
struct npc_mcam_get_stats_req *req;
struct npc_mcam_get_stats_rsp *rsp;
struct otx2_tc_flow_stats *stats;
struct otx2_tc_flow *flow_node;
int err;
flow_node = otx2_tc_get_entry_by_cookie(nic->flow_cfg, tc_flow_cmd->cookie);
if (!flow_node) {
netdev_info(nic->netdev, "tc flow not found for cookie %lx",
tc_flow_cmd->cookie);
return -EINVAL;
}
mutex_lock(&nic->mbox.lock);
req = otx2_mbox_alloc_msg_npc_mcam_entry_stats(&nic->mbox);
if (!req) {
mutex_unlock(&nic->mbox.lock);
return -ENOMEM;
}
req->entry = flow_node->entry;
err = otx2_sync_mbox_msg(&nic->mbox);
if (err) {
netdev_err(nic->netdev, "Failed to get stats for MCAM flow entry %d\n",
req->entry);
mutex_unlock(&nic->mbox.lock);
return -EFAULT;
}
rsp = (struct npc_mcam_get_stats_rsp *)otx2_mbox_get_rsp
(&nic->mbox.mbox, 0, &req->hdr);
if (IS_ERR(rsp)) {
mutex_unlock(&nic->mbox.lock);
return PTR_ERR(rsp);
}
mutex_unlock(&nic->mbox.lock);
if (!rsp->stat_ena)
return -EINVAL;
stats = &flow_node->stats;
spin_lock(&flow_node->lock);
flow_stats_update(&tc_flow_cmd->stats, 0x0, rsp->stat - stats->pkts, 0x0, 0x0,
FLOW_ACTION_HW_STATS_IMMEDIATE);
stats->pkts = rsp->stat;
spin_unlock(&flow_node->lock);
return 0;
}
static int otx2_setup_tc_cls_flower(struct otx2_nic *nic,
struct flow_cls_offload *cls_flower)
{
switch (cls_flower->command) {
case FLOW_CLS_REPLACE:
return otx2_tc_add_flow(nic, cls_flower);
case FLOW_CLS_DESTROY:
return otx2_tc_del_flow(nic, cls_flower);
case FLOW_CLS_STATS:
return otx2_tc_get_flow_stats(nic, cls_flower);
default:
return -EOPNOTSUPP;
}
}
static int otx2_tc_ingress_matchall_install(struct otx2_nic *nic,
struct tc_cls_matchall_offload *cls)
{
struct netlink_ext_ack *extack = cls->common.extack;
struct flow_action *actions = &cls->rule->action;
struct flow_action_entry *entry;
u64 rate;
int err;
err = otx2_tc_validate_flow(nic, actions, extack);
if (err)
return err;
if (nic->flags & OTX2_FLAG_TC_MATCHALL_INGRESS_ENABLED) {
NL_SET_ERR_MSG_MOD(extack,
"Only one ingress MATCHALL ratelimitter can be offloaded");
return -ENOMEM;
}
entry = &cls->rule->action.entries[0];
switch (entry->id) {
case FLOW_ACTION_POLICE:
/* Ingress ratelimiting is not supported on OcteonTx2 */
if (is_dev_otx2(nic->pdev)) {
NL_SET_ERR_MSG_MOD(extack,
"Ingress policing not supported on this platform");
return -EOPNOTSUPP;
}
err = cn10k_alloc_matchall_ipolicer(nic);
if (err)
return err;
/* Convert to bits per second */
rate = entry->police.rate_bytes_ps * 8;
err = cn10k_set_matchall_ipolicer_rate(nic, entry->police.burst, rate);
if (err)
return err;
nic->flags |= OTX2_FLAG_TC_MATCHALL_INGRESS_ENABLED;
break;
default:
NL_SET_ERR_MSG_MOD(extack,
"Only police action supported with Ingress MATCHALL offload");
return -EOPNOTSUPP;
}
return 0;
}
static int otx2_tc_ingress_matchall_delete(struct otx2_nic *nic,
struct tc_cls_matchall_offload *cls)
{
struct netlink_ext_ack *extack = cls->common.extack;
int err;
if (nic->flags & OTX2_FLAG_INTF_DOWN) {
NL_SET_ERR_MSG_MOD(extack, "Interface not initialized");
return -EINVAL;
}
err = cn10k_free_matchall_ipolicer(nic);
nic->flags &= ~OTX2_FLAG_TC_MATCHALL_INGRESS_ENABLED;
return err;
}
static int otx2_setup_tc_ingress_matchall(struct otx2_nic *nic,
struct tc_cls_matchall_offload *cls_matchall)
{
switch (cls_matchall->command) {
case TC_CLSMATCHALL_REPLACE:
return otx2_tc_ingress_matchall_install(nic, cls_matchall);
case TC_CLSMATCHALL_DESTROY:
return otx2_tc_ingress_matchall_delete(nic, cls_matchall);
case TC_CLSMATCHALL_STATS:
default:
break;
}
return -EOPNOTSUPP;
}
static int otx2_setup_tc_block_ingress_cb(enum tc_setup_type type,
void *type_data, void *cb_priv)
{
struct otx2_nic *nic = cb_priv;
bool ntuple;
if (!tc_cls_can_offload_and_chain0(nic->netdev, type_data))
return -EOPNOTSUPP;
ntuple = nic->netdev->features & NETIF_F_NTUPLE;
switch (type) {
case TC_SETUP_CLSFLOWER:
if (ntuple) {
netdev_warn(nic->netdev,
"Can't install TC flower offload rule when NTUPLE is active");
return -EOPNOTSUPP;
}
return otx2_setup_tc_cls_flower(nic, type_data);
case TC_SETUP_CLSMATCHALL:
return otx2_setup_tc_ingress_matchall(nic, type_data);
default:
break;
}
return -EOPNOTSUPP;
}
static int otx2_setup_tc_egress_matchall(struct otx2_nic *nic,
struct tc_cls_matchall_offload *cls_matchall)
{
switch (cls_matchall->command) {
case TC_CLSMATCHALL_REPLACE:
return otx2_tc_egress_matchall_install(nic, cls_matchall);
case TC_CLSMATCHALL_DESTROY:
return otx2_tc_egress_matchall_delete(nic, cls_matchall);
case TC_CLSMATCHALL_STATS:
default:
break;
}
return -EOPNOTSUPP;
}
static int otx2_setup_tc_block_egress_cb(enum tc_setup_type type,
void *type_data, void *cb_priv)
{
struct otx2_nic *nic = cb_priv;
if (!tc_cls_can_offload_and_chain0(nic->netdev, type_data))
return -EOPNOTSUPP;
switch (type) {
case TC_SETUP_CLSMATCHALL:
return otx2_setup_tc_egress_matchall(nic, type_data);
default:
break;
}
return -EOPNOTSUPP;
}
static LIST_HEAD(otx2_block_cb_list);
static int otx2_setup_tc_block(struct net_device *netdev,
struct flow_block_offload *f)
{
struct otx2_nic *nic = netdev_priv(netdev);
flow_setup_cb_t *cb;
bool ingress;
if (f->block_shared)
return -EOPNOTSUPP;
if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS) {
cb = otx2_setup_tc_block_ingress_cb;
ingress = true;
} else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS) {
cb = otx2_setup_tc_block_egress_cb;
ingress = false;
} else {
return -EOPNOTSUPP;
}
return flow_block_cb_setup_simple(f, &otx2_block_cb_list, cb,
nic, nic, ingress);
}
int otx2_setup_tc(struct net_device *netdev, enum tc_setup_type type,
void *type_data)
{
switch (type) {
case TC_SETUP_BLOCK:
return otx2_setup_tc_block(netdev, type_data);
case TC_SETUP_QDISC_HTB:
return otx2_setup_tc_htb(netdev, type_data);
default:
return -EOPNOTSUPP;
}
}
EXPORT_SYMBOL(otx2_setup_tc);
int otx2_init_tc(struct otx2_nic *nic)
{
/* Exclude receive queue 0 being used for police action */
set_bit(0, &nic->rq_bmap);
if (!nic->flow_cfg) {
netdev_err(nic->netdev,
"Can't init TC, nic->flow_cfg is not setup\n");
return -EINVAL;
}
return 0;
}
EXPORT_SYMBOL(otx2_init_tc);
void otx2_shutdown_tc(struct otx2_nic *nic)
{
otx2_destroy_tc_flow_list(nic);
}
EXPORT_SYMBOL(otx2_shutdown_tc);
static void otx2_tc_config_ingress_rule(struct otx2_nic *nic,
struct otx2_tc_flow *node)
{
struct npc_install_flow_req *req;
if (otx2_tc_act_set_hw_police(nic, node))
return;
mutex_lock(&nic->mbox.lock);
req = otx2_mbox_alloc_msg_npc_install_flow(&nic->mbox);
if (!req)
goto err;
memcpy(req, &node->req, sizeof(struct npc_install_flow_req));
if (otx2_sync_mbox_msg(&nic->mbox))
netdev_err(nic->netdev,
"Failed to install MCAM flow entry for ingress rule");
err:
mutex_unlock(&nic->mbox.lock);
}
void otx2_tc_apply_ingress_police_rules(struct otx2_nic *nic)
{
struct otx2_flow_config *flow_cfg = nic->flow_cfg;
struct otx2_tc_flow *node;
/* If any ingress policer rules exist for the interface then
* apply those rules. Ingress policer rules depend on bandwidth
* profiles linked to the receive queues. Since no receive queues
* exist when interface is down, ingress policer rules are stored
* and configured in hardware after all receive queues are allocated
* in otx2_open.
*/
list_for_each_entry(node, &flow_cfg->flow_list_tc, list) {
if (node->is_act_police)
otx2_tc_config_ingress_rule(nic, node);
}
}
EXPORT_SYMBOL(otx2_tc_apply_ingress_police_rules);