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|
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2018 Mellanox Technologies. All rights reserved */
#include <linux/err.h>
#include <linux/gfp.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/slab.h>
#include <net/inet_ecn.h>
#include <net/ipv6.h>
#include "reg.h"
#include "spectrum.h"
#include "spectrum_nve.h"
const struct mlxsw_sp_nve_ops *mlxsw_sp1_nve_ops_arr[] = {
[MLXSW_SP_NVE_TYPE_VXLAN] = &mlxsw_sp1_nve_vxlan_ops,
};
const struct mlxsw_sp_nve_ops *mlxsw_sp2_nve_ops_arr[] = {
[MLXSW_SP_NVE_TYPE_VXLAN] = &mlxsw_sp2_nve_vxlan_ops,
};
struct mlxsw_sp_nve_mc_entry;
struct mlxsw_sp_nve_mc_record;
struct mlxsw_sp_nve_mc_list;
struct mlxsw_sp_nve_mc_record_ops {
enum mlxsw_reg_tnumt_record_type type;
int (*entry_add)(struct mlxsw_sp_nve_mc_record *mc_record,
struct mlxsw_sp_nve_mc_entry *mc_entry,
const union mlxsw_sp_l3addr *addr);
void (*entry_del)(const struct mlxsw_sp_nve_mc_record *mc_record,
const struct mlxsw_sp_nve_mc_entry *mc_entry);
void (*entry_set)(const struct mlxsw_sp_nve_mc_record *mc_record,
const struct mlxsw_sp_nve_mc_entry *mc_entry,
char *tnumt_pl, unsigned int entry_index);
bool (*entry_compare)(const struct mlxsw_sp_nve_mc_record *mc_record,
const struct mlxsw_sp_nve_mc_entry *mc_entry,
const union mlxsw_sp_l3addr *addr);
};
struct mlxsw_sp_nve_mc_list_key {
u16 fid_index;
};
struct mlxsw_sp_nve_mc_ipv6_entry {
struct in6_addr addr6;
u32 addr6_kvdl_index;
};
struct mlxsw_sp_nve_mc_entry {
union {
__be32 addr4;
struct mlxsw_sp_nve_mc_ipv6_entry ipv6_entry;
};
u8 valid:1;
};
struct mlxsw_sp_nve_mc_record {
struct list_head list;
enum mlxsw_sp_l3proto proto;
unsigned int num_entries;
struct mlxsw_sp *mlxsw_sp;
struct mlxsw_sp_nve_mc_list *mc_list;
const struct mlxsw_sp_nve_mc_record_ops *ops;
u32 kvdl_index;
struct mlxsw_sp_nve_mc_entry entries[0];
};
struct mlxsw_sp_nve_mc_list {
struct list_head records_list;
struct rhash_head ht_node;
struct mlxsw_sp_nve_mc_list_key key;
};
static const struct rhashtable_params mlxsw_sp_nve_mc_list_ht_params = {
.key_len = sizeof(struct mlxsw_sp_nve_mc_list_key),
.key_offset = offsetof(struct mlxsw_sp_nve_mc_list, key),
.head_offset = offsetof(struct mlxsw_sp_nve_mc_list, ht_node),
};
static int
mlxsw_sp_nve_mc_record_ipv4_entry_add(struct mlxsw_sp_nve_mc_record *mc_record,
struct mlxsw_sp_nve_mc_entry *mc_entry,
const union mlxsw_sp_l3addr *addr)
{
mc_entry->addr4 = addr->addr4;
return 0;
}
static void
mlxsw_sp_nve_mc_record_ipv4_entry_del(const struct mlxsw_sp_nve_mc_record *mc_record,
const struct mlxsw_sp_nve_mc_entry *mc_entry)
{
}
static void
mlxsw_sp_nve_mc_record_ipv4_entry_set(const struct mlxsw_sp_nve_mc_record *mc_record,
const struct mlxsw_sp_nve_mc_entry *mc_entry,
char *tnumt_pl, unsigned int entry_index)
{
u32 udip = be32_to_cpu(mc_entry->addr4);
mlxsw_reg_tnumt_udip_set(tnumt_pl, entry_index, udip);
}
static bool
mlxsw_sp_nve_mc_record_ipv4_entry_compare(const struct mlxsw_sp_nve_mc_record *mc_record,
const struct mlxsw_sp_nve_mc_entry *mc_entry,
const union mlxsw_sp_l3addr *addr)
{
return mc_entry->addr4 == addr->addr4;
}
static const struct mlxsw_sp_nve_mc_record_ops
mlxsw_sp_nve_mc_record_ipv4_ops = {
.type = MLXSW_REG_TNUMT_RECORD_TYPE_IPV4,
.entry_add = &mlxsw_sp_nve_mc_record_ipv4_entry_add,
.entry_del = &mlxsw_sp_nve_mc_record_ipv4_entry_del,
.entry_set = &mlxsw_sp_nve_mc_record_ipv4_entry_set,
.entry_compare = &mlxsw_sp_nve_mc_record_ipv4_entry_compare,
};
static int
mlxsw_sp_nve_mc_record_ipv6_entry_add(struct mlxsw_sp_nve_mc_record *mc_record,
struct mlxsw_sp_nve_mc_entry *mc_entry,
const union mlxsw_sp_l3addr *addr)
{
WARN_ON(1);
return -EINVAL;
}
static void
mlxsw_sp_nve_mc_record_ipv6_entry_del(const struct mlxsw_sp_nve_mc_record *mc_record,
const struct mlxsw_sp_nve_mc_entry *mc_entry)
{
}
static void
mlxsw_sp_nve_mc_record_ipv6_entry_set(const struct mlxsw_sp_nve_mc_record *mc_record,
const struct mlxsw_sp_nve_mc_entry *mc_entry,
char *tnumt_pl, unsigned int entry_index)
{
u32 udip_ptr = mc_entry->ipv6_entry.addr6_kvdl_index;
mlxsw_reg_tnumt_udip_ptr_set(tnumt_pl, entry_index, udip_ptr);
}
static bool
mlxsw_sp_nve_mc_record_ipv6_entry_compare(const struct mlxsw_sp_nve_mc_record *mc_record,
const struct mlxsw_sp_nve_mc_entry *mc_entry,
const union mlxsw_sp_l3addr *addr)
{
return ipv6_addr_equal(&mc_entry->ipv6_entry.addr6, &addr->addr6);
}
static const struct mlxsw_sp_nve_mc_record_ops
mlxsw_sp_nve_mc_record_ipv6_ops = {
.type = MLXSW_REG_TNUMT_RECORD_TYPE_IPV6,
.entry_add = &mlxsw_sp_nve_mc_record_ipv6_entry_add,
.entry_del = &mlxsw_sp_nve_mc_record_ipv6_entry_del,
.entry_set = &mlxsw_sp_nve_mc_record_ipv6_entry_set,
.entry_compare = &mlxsw_sp_nve_mc_record_ipv6_entry_compare,
};
static const struct mlxsw_sp_nve_mc_record_ops *
mlxsw_sp_nve_mc_record_ops_arr[] = {
[MLXSW_SP_L3_PROTO_IPV4] = &mlxsw_sp_nve_mc_record_ipv4_ops,
[MLXSW_SP_L3_PROTO_IPV6] = &mlxsw_sp_nve_mc_record_ipv6_ops,
};
int mlxsw_sp_nve_learned_ip_resolve(struct mlxsw_sp *mlxsw_sp, u32 uip,
enum mlxsw_sp_l3proto proto,
union mlxsw_sp_l3addr *addr)
{
switch (proto) {
case MLXSW_SP_L3_PROTO_IPV4:
addr->addr4 = cpu_to_be32(uip);
return 0;
default:
WARN_ON(1);
return -EINVAL;
}
}
static struct mlxsw_sp_nve_mc_list *
mlxsw_sp_nve_mc_list_find(struct mlxsw_sp *mlxsw_sp,
const struct mlxsw_sp_nve_mc_list_key *key)
{
struct mlxsw_sp_nve *nve = mlxsw_sp->nve;
return rhashtable_lookup_fast(&nve->mc_list_ht, key,
mlxsw_sp_nve_mc_list_ht_params);
}
static struct mlxsw_sp_nve_mc_list *
mlxsw_sp_nve_mc_list_create(struct mlxsw_sp *mlxsw_sp,
const struct mlxsw_sp_nve_mc_list_key *key)
{
struct mlxsw_sp_nve *nve = mlxsw_sp->nve;
struct mlxsw_sp_nve_mc_list *mc_list;
int err;
mc_list = kmalloc(sizeof(*mc_list), GFP_KERNEL);
if (!mc_list)
return ERR_PTR(-ENOMEM);
INIT_LIST_HEAD(&mc_list->records_list);
mc_list->key = *key;
err = rhashtable_insert_fast(&nve->mc_list_ht, &mc_list->ht_node,
mlxsw_sp_nve_mc_list_ht_params);
if (err)
goto err_rhashtable_insert;
return mc_list;
err_rhashtable_insert:
kfree(mc_list);
return ERR_PTR(err);
}
static void mlxsw_sp_nve_mc_list_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_nve_mc_list *mc_list)
{
struct mlxsw_sp_nve *nve = mlxsw_sp->nve;
rhashtable_remove_fast(&nve->mc_list_ht, &mc_list->ht_node,
mlxsw_sp_nve_mc_list_ht_params);
WARN_ON(!list_empty(&mc_list->records_list));
kfree(mc_list);
}
static struct mlxsw_sp_nve_mc_list *
mlxsw_sp_nve_mc_list_get(struct mlxsw_sp *mlxsw_sp,
const struct mlxsw_sp_nve_mc_list_key *key)
{
struct mlxsw_sp_nve_mc_list *mc_list;
mc_list = mlxsw_sp_nve_mc_list_find(mlxsw_sp, key);
if (mc_list)
return mc_list;
return mlxsw_sp_nve_mc_list_create(mlxsw_sp, key);
}
static void
mlxsw_sp_nve_mc_list_put(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_nve_mc_list *mc_list)
{
if (!list_empty(&mc_list->records_list))
return;
mlxsw_sp_nve_mc_list_destroy(mlxsw_sp, mc_list);
}
static struct mlxsw_sp_nve_mc_record *
mlxsw_sp_nve_mc_record_create(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_nve_mc_list *mc_list,
enum mlxsw_sp_l3proto proto)
{
unsigned int num_max_entries = mlxsw_sp->nve->num_max_mc_entries[proto];
struct mlxsw_sp_nve_mc_record *mc_record;
int err;
mc_record = kzalloc(struct_size(mc_record, entries, num_max_entries),
GFP_KERNEL);
if (!mc_record)
return ERR_PTR(-ENOMEM);
err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_TNUMT, 1,
&mc_record->kvdl_index);
if (err)
goto err_kvdl_alloc;
mc_record->ops = mlxsw_sp_nve_mc_record_ops_arr[proto];
mc_record->mlxsw_sp = mlxsw_sp;
mc_record->mc_list = mc_list;
mc_record->proto = proto;
list_add_tail(&mc_record->list, &mc_list->records_list);
return mc_record;
err_kvdl_alloc:
kfree(mc_record);
return ERR_PTR(err);
}
static void
mlxsw_sp_nve_mc_record_destroy(struct mlxsw_sp_nve_mc_record *mc_record)
{
struct mlxsw_sp *mlxsw_sp = mc_record->mlxsw_sp;
list_del(&mc_record->list);
mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_TNUMT, 1,
mc_record->kvdl_index);
WARN_ON(mc_record->num_entries);
kfree(mc_record);
}
static struct mlxsw_sp_nve_mc_record *
mlxsw_sp_nve_mc_record_get(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_nve_mc_list *mc_list,
enum mlxsw_sp_l3proto proto)
{
struct mlxsw_sp_nve_mc_record *mc_record;
list_for_each_entry_reverse(mc_record, &mc_list->records_list, list) {
unsigned int num_entries = mc_record->num_entries;
struct mlxsw_sp_nve *nve = mlxsw_sp->nve;
if (mc_record->proto == proto &&
num_entries < nve->num_max_mc_entries[proto])
return mc_record;
}
return mlxsw_sp_nve_mc_record_create(mlxsw_sp, mc_list, proto);
}
static void
mlxsw_sp_nve_mc_record_put(struct mlxsw_sp_nve_mc_record *mc_record)
{
if (mc_record->num_entries != 0)
return;
mlxsw_sp_nve_mc_record_destroy(mc_record);
}
static struct mlxsw_sp_nve_mc_entry *
mlxsw_sp_nve_mc_free_entry_find(struct mlxsw_sp_nve_mc_record *mc_record)
{
struct mlxsw_sp_nve *nve = mc_record->mlxsw_sp->nve;
unsigned int num_max_entries;
int i;
num_max_entries = nve->num_max_mc_entries[mc_record->proto];
for (i = 0; i < num_max_entries; i++) {
if (mc_record->entries[i].valid)
continue;
return &mc_record->entries[i];
}
return NULL;
}
static int
mlxsw_sp_nve_mc_record_refresh(struct mlxsw_sp_nve_mc_record *mc_record)
{
enum mlxsw_reg_tnumt_record_type type = mc_record->ops->type;
struct mlxsw_sp_nve_mc_list *mc_list = mc_record->mc_list;
struct mlxsw_sp *mlxsw_sp = mc_record->mlxsw_sp;
char tnumt_pl[MLXSW_REG_TNUMT_LEN];
unsigned int num_max_entries;
unsigned int num_entries = 0;
u32 next_kvdl_index = 0;
bool next_valid = false;
int i;
if (!list_is_last(&mc_record->list, &mc_list->records_list)) {
struct mlxsw_sp_nve_mc_record *next_record;
next_record = list_next_entry(mc_record, list);
next_kvdl_index = next_record->kvdl_index;
next_valid = true;
}
mlxsw_reg_tnumt_pack(tnumt_pl, type, MLXSW_REG_TNUMT_TUNNEL_PORT_NVE,
mc_record->kvdl_index, next_valid,
next_kvdl_index, mc_record->num_entries);
num_max_entries = mlxsw_sp->nve->num_max_mc_entries[mc_record->proto];
for (i = 0; i < num_max_entries; i++) {
struct mlxsw_sp_nve_mc_entry *mc_entry;
mc_entry = &mc_record->entries[i];
if (!mc_entry->valid)
continue;
mc_record->ops->entry_set(mc_record, mc_entry, tnumt_pl,
num_entries++);
}
WARN_ON(num_entries != mc_record->num_entries);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tnumt), tnumt_pl);
}
static bool
mlxsw_sp_nve_mc_record_is_first(struct mlxsw_sp_nve_mc_record *mc_record)
{
struct mlxsw_sp_nve_mc_list *mc_list = mc_record->mc_list;
struct mlxsw_sp_nve_mc_record *first_record;
first_record = list_first_entry(&mc_list->records_list,
struct mlxsw_sp_nve_mc_record, list);
return mc_record == first_record;
}
static struct mlxsw_sp_nve_mc_entry *
mlxsw_sp_nve_mc_entry_find(struct mlxsw_sp_nve_mc_record *mc_record,
union mlxsw_sp_l3addr *addr)
{
struct mlxsw_sp_nve *nve = mc_record->mlxsw_sp->nve;
unsigned int num_max_entries;
int i;
num_max_entries = nve->num_max_mc_entries[mc_record->proto];
for (i = 0; i < num_max_entries; i++) {
struct mlxsw_sp_nve_mc_entry *mc_entry;
mc_entry = &mc_record->entries[i];
if (!mc_entry->valid)
continue;
if (mc_record->ops->entry_compare(mc_record, mc_entry, addr))
return mc_entry;
}
return NULL;
}
static int
mlxsw_sp_nve_mc_record_ip_add(struct mlxsw_sp_nve_mc_record *mc_record,
union mlxsw_sp_l3addr *addr)
{
struct mlxsw_sp_nve_mc_entry *mc_entry = NULL;
int err;
mc_entry = mlxsw_sp_nve_mc_free_entry_find(mc_record);
if (WARN_ON(!mc_entry))
return -EINVAL;
err = mc_record->ops->entry_add(mc_record, mc_entry, addr);
if (err)
return err;
mc_record->num_entries++;
mc_entry->valid = true;
err = mlxsw_sp_nve_mc_record_refresh(mc_record);
if (err)
goto err_record_refresh;
/* If this is a new record and not the first one, then we need to
* update the next pointer of the previous entry
*/
if (mc_record->num_entries != 1 ||
mlxsw_sp_nve_mc_record_is_first(mc_record))
return 0;
err = mlxsw_sp_nve_mc_record_refresh(list_prev_entry(mc_record, list));
if (err)
goto err_prev_record_refresh;
return 0;
err_prev_record_refresh:
err_record_refresh:
mc_entry->valid = false;
mc_record->num_entries--;
mc_record->ops->entry_del(mc_record, mc_entry);
return err;
}
static void
mlxsw_sp_nve_mc_record_entry_del(struct mlxsw_sp_nve_mc_record *mc_record,
struct mlxsw_sp_nve_mc_entry *mc_entry)
{
struct mlxsw_sp_nve_mc_list *mc_list = mc_record->mc_list;
mc_entry->valid = false;
mc_record->num_entries--;
/* When the record continues to exist we only need to invalidate
* the requested entry
*/
if (mc_record->num_entries != 0) {
mlxsw_sp_nve_mc_record_refresh(mc_record);
mc_record->ops->entry_del(mc_record, mc_entry);
return;
}
/* If the record needs to be deleted, but it is not the first,
* then we need to make sure that the previous record no longer
* points to it. Remove deleted record from the list to reflect
* that and then re-add it at the end, so that it could be
* properly removed by the record destruction code
*/
if (!mlxsw_sp_nve_mc_record_is_first(mc_record)) {
struct mlxsw_sp_nve_mc_record *prev_record;
prev_record = list_prev_entry(mc_record, list);
list_del(&mc_record->list);
mlxsw_sp_nve_mc_record_refresh(prev_record);
list_add_tail(&mc_record->list, &mc_list->records_list);
mc_record->ops->entry_del(mc_record, mc_entry);
return;
}
/* If the first record needs to be deleted, but the list is not
* singular, then the second record needs to be written in the
* first record's address, as this address is stored as a property
* of the FID
*/
if (mlxsw_sp_nve_mc_record_is_first(mc_record) &&
!list_is_singular(&mc_list->records_list)) {
struct mlxsw_sp_nve_mc_record *next_record;
next_record = list_next_entry(mc_record, list);
swap(mc_record->kvdl_index, next_record->kvdl_index);
mlxsw_sp_nve_mc_record_refresh(next_record);
mc_record->ops->entry_del(mc_record, mc_entry);
return;
}
/* This is the last case where the last remaining record needs to
* be deleted. Simply delete the entry
*/
mc_record->ops->entry_del(mc_record, mc_entry);
}
static struct mlxsw_sp_nve_mc_record *
mlxsw_sp_nve_mc_record_find(struct mlxsw_sp_nve_mc_list *mc_list,
enum mlxsw_sp_l3proto proto,
union mlxsw_sp_l3addr *addr,
struct mlxsw_sp_nve_mc_entry **mc_entry)
{
struct mlxsw_sp_nve_mc_record *mc_record;
list_for_each_entry(mc_record, &mc_list->records_list, list) {
if (mc_record->proto != proto)
continue;
*mc_entry = mlxsw_sp_nve_mc_entry_find(mc_record, addr);
if (*mc_entry)
return mc_record;
}
return NULL;
}
static int mlxsw_sp_nve_mc_list_ip_add(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_nve_mc_list *mc_list,
enum mlxsw_sp_l3proto proto,
union mlxsw_sp_l3addr *addr)
{
struct mlxsw_sp_nve_mc_record *mc_record;
int err;
mc_record = mlxsw_sp_nve_mc_record_get(mlxsw_sp, mc_list, proto);
if (IS_ERR(mc_record))
return PTR_ERR(mc_record);
err = mlxsw_sp_nve_mc_record_ip_add(mc_record, addr);
if (err)
goto err_ip_add;
return 0;
err_ip_add:
mlxsw_sp_nve_mc_record_put(mc_record);
return err;
}
static void mlxsw_sp_nve_mc_list_ip_del(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_nve_mc_list *mc_list,
enum mlxsw_sp_l3proto proto,
union mlxsw_sp_l3addr *addr)
{
struct mlxsw_sp_nve_mc_record *mc_record;
struct mlxsw_sp_nve_mc_entry *mc_entry;
mc_record = mlxsw_sp_nve_mc_record_find(mc_list, proto, addr,
&mc_entry);
if (!mc_record)
return;
mlxsw_sp_nve_mc_record_entry_del(mc_record, mc_entry);
mlxsw_sp_nve_mc_record_put(mc_record);
}
static int
mlxsw_sp_nve_fid_flood_index_set(struct mlxsw_sp_fid *fid,
struct mlxsw_sp_nve_mc_list *mc_list)
{
struct mlxsw_sp_nve_mc_record *mc_record;
/* The address of the first record in the list is a property of
* the FID and we never change it. It only needs to be set when
* a new list is created
*/
if (mlxsw_sp_fid_nve_flood_index_is_set(fid))
return 0;
mc_record = list_first_entry(&mc_list->records_list,
struct mlxsw_sp_nve_mc_record, list);
return mlxsw_sp_fid_nve_flood_index_set(fid, mc_record->kvdl_index);
}
static void
mlxsw_sp_nve_fid_flood_index_clear(struct mlxsw_sp_fid *fid,
struct mlxsw_sp_nve_mc_list *mc_list)
{
struct mlxsw_sp_nve_mc_record *mc_record;
/* The address of the first record needs to be invalidated only when
* the last record is about to be removed
*/
if (!list_is_singular(&mc_list->records_list))
return;
mc_record = list_first_entry(&mc_list->records_list,
struct mlxsw_sp_nve_mc_record, list);
if (mc_record->num_entries != 1)
return;
return mlxsw_sp_fid_nve_flood_index_clear(fid);
}
int mlxsw_sp_nve_flood_ip_add(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_fid *fid,
enum mlxsw_sp_l3proto proto,
union mlxsw_sp_l3addr *addr)
{
struct mlxsw_sp_nve_mc_list_key key = { 0 };
struct mlxsw_sp_nve_mc_list *mc_list;
int err;
key.fid_index = mlxsw_sp_fid_index(fid);
mc_list = mlxsw_sp_nve_mc_list_get(mlxsw_sp, &key);
if (IS_ERR(mc_list))
return PTR_ERR(mc_list);
err = mlxsw_sp_nve_mc_list_ip_add(mlxsw_sp, mc_list, proto, addr);
if (err)
goto err_add_ip;
err = mlxsw_sp_nve_fid_flood_index_set(fid, mc_list);
if (err)
goto err_fid_flood_index_set;
return 0;
err_fid_flood_index_set:
mlxsw_sp_nve_mc_list_ip_del(mlxsw_sp, mc_list, proto, addr);
err_add_ip:
mlxsw_sp_nve_mc_list_put(mlxsw_sp, mc_list);
return err;
}
void mlxsw_sp_nve_flood_ip_del(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_fid *fid,
enum mlxsw_sp_l3proto proto,
union mlxsw_sp_l3addr *addr)
{
struct mlxsw_sp_nve_mc_list_key key = { 0 };
struct mlxsw_sp_nve_mc_list *mc_list;
key.fid_index = mlxsw_sp_fid_index(fid);
mc_list = mlxsw_sp_nve_mc_list_find(mlxsw_sp, &key);
if (!mc_list)
return;
mlxsw_sp_nve_fid_flood_index_clear(fid, mc_list);
mlxsw_sp_nve_mc_list_ip_del(mlxsw_sp, mc_list, proto, addr);
mlxsw_sp_nve_mc_list_put(mlxsw_sp, mc_list);
}
static void
mlxsw_sp_nve_mc_record_delete(struct mlxsw_sp_nve_mc_record *mc_record)
{
struct mlxsw_sp_nve *nve = mc_record->mlxsw_sp->nve;
unsigned int num_max_entries;
int i;
num_max_entries = nve->num_max_mc_entries[mc_record->proto];
for (i = 0; i < num_max_entries; i++) {
struct mlxsw_sp_nve_mc_entry *mc_entry = &mc_record->entries[i];
if (!mc_entry->valid)
continue;
mlxsw_sp_nve_mc_record_entry_del(mc_record, mc_entry);
}
WARN_ON(mc_record->num_entries);
mlxsw_sp_nve_mc_record_put(mc_record);
}
static void mlxsw_sp_nve_flood_ip_flush(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_fid *fid)
{
struct mlxsw_sp_nve_mc_record *mc_record, *tmp;
struct mlxsw_sp_nve_mc_list_key key = { 0 };
struct mlxsw_sp_nve_mc_list *mc_list;
if (!mlxsw_sp_fid_nve_flood_index_is_set(fid))
return;
mlxsw_sp_fid_nve_flood_index_clear(fid);
key.fid_index = mlxsw_sp_fid_index(fid);
mc_list = mlxsw_sp_nve_mc_list_find(mlxsw_sp, &key);
if (WARN_ON(!mc_list))
return;
list_for_each_entry_safe(mc_record, tmp, &mc_list->records_list, list)
mlxsw_sp_nve_mc_record_delete(mc_record);
WARN_ON(!list_empty(&mc_list->records_list));
mlxsw_sp_nve_mc_list_put(mlxsw_sp, mc_list);
}
u32 mlxsw_sp_nve_decap_tunnel_index_get(const struct mlxsw_sp *mlxsw_sp)
{
WARN_ON(mlxsw_sp->nve->num_nve_tunnels == 0);
return mlxsw_sp->nve->tunnel_index;
}
bool mlxsw_sp_nve_ipv4_route_is_decap(const struct mlxsw_sp *mlxsw_sp,
u32 tb_id, __be32 addr)
{
struct mlxsw_sp_nve *nve = mlxsw_sp->nve;
struct mlxsw_sp_nve_config *config = &nve->config;
if (nve->num_nve_tunnels &&
config->ul_proto == MLXSW_SP_L3_PROTO_IPV4 &&
config->ul_sip.addr4 == addr && config->ul_tb_id == tb_id)
return true;
return false;
}
static int mlxsw_sp_nve_tunnel_init(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_nve_config *config)
{
struct mlxsw_sp_nve *nve = mlxsw_sp->nve;
const struct mlxsw_sp_nve_ops *ops;
int err;
if (nve->num_nve_tunnels++ != 0)
return 0;
err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1,
&nve->tunnel_index);
if (err)
goto err_kvdl_alloc;
ops = nve->nve_ops_arr[config->type];
err = ops->init(nve, config);
if (err)
goto err_ops_init;
return 0;
err_ops_init:
mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1,
nve->tunnel_index);
err_kvdl_alloc:
nve->num_nve_tunnels--;
return err;
}
static void mlxsw_sp_nve_tunnel_fini(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_nve *nve = mlxsw_sp->nve;
const struct mlxsw_sp_nve_ops *ops;
ops = nve->nve_ops_arr[nve->config.type];
if (mlxsw_sp->nve->num_nve_tunnels == 1) {
ops->fini(nve);
mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1,
nve->tunnel_index);
memset(&nve->config, 0, sizeof(nve->config));
}
nve->num_nve_tunnels--;
}
static void mlxsw_sp_nve_fdb_flush_by_fid(struct mlxsw_sp *mlxsw_sp,
u16 fid_index)
{
char sfdf_pl[MLXSW_REG_SFDF_LEN];
mlxsw_reg_sfdf_pack(sfdf_pl, MLXSW_REG_SFDF_FLUSH_PER_NVE_AND_FID);
mlxsw_reg_sfdf_fid_set(sfdf_pl, fid_index);
mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sfdf), sfdf_pl);
}
static void mlxsw_sp_nve_fdb_clear_offload(struct mlxsw_sp *mlxsw_sp,
const struct mlxsw_sp_fid *fid,
const struct net_device *nve_dev,
__be32 vni)
{
const struct mlxsw_sp_nve_ops *ops;
enum mlxsw_sp_nve_type type;
if (WARN_ON(mlxsw_sp_fid_nve_type(fid, &type)))
return;
ops = mlxsw_sp->nve->nve_ops_arr[type];
ops->fdb_clear_offload(nve_dev, vni);
}
int mlxsw_sp_nve_fid_enable(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fid *fid,
struct mlxsw_sp_nve_params *params,
struct netlink_ext_ack *extack)
{
struct mlxsw_sp_nve *nve = mlxsw_sp->nve;
const struct mlxsw_sp_nve_ops *ops;
struct mlxsw_sp_nve_config config;
int err;
ops = nve->nve_ops_arr[params->type];
if (!ops->can_offload(nve, params->dev, extack))
return -EINVAL;
memset(&config, 0, sizeof(config));
ops->nve_config(nve, params->dev, &config);
if (nve->num_nve_tunnels &&
memcmp(&config, &nve->config, sizeof(config))) {
NL_SET_ERR_MSG_MOD(extack, "Conflicting NVE tunnels configuration");
return -EINVAL;
}
err = mlxsw_sp_nve_tunnel_init(mlxsw_sp, &config);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Failed to initialize NVE tunnel");
return err;
}
err = mlxsw_sp_fid_vni_set(fid, params->type, params->vni,
params->dev->ifindex);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Failed to set VNI on FID");
goto err_fid_vni_set;
}
nve->config = config;
err = ops->fdb_replay(params->dev, params->vni, extack);
if (err)
goto err_fdb_replay;
return 0;
err_fdb_replay:
mlxsw_sp_fid_vni_clear(fid);
err_fid_vni_set:
mlxsw_sp_nve_tunnel_fini(mlxsw_sp);
return err;
}
void mlxsw_sp_nve_fid_disable(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_fid *fid)
{
u16 fid_index = mlxsw_sp_fid_index(fid);
struct net_device *nve_dev;
int nve_ifindex;
__be32 vni;
mlxsw_sp_nve_flood_ip_flush(mlxsw_sp, fid);
mlxsw_sp_nve_fdb_flush_by_fid(mlxsw_sp, fid_index);
if (WARN_ON(mlxsw_sp_fid_nve_ifindex(fid, &nve_ifindex) ||
mlxsw_sp_fid_vni(fid, &vni)))
goto out;
nve_dev = dev_get_by_index(mlxsw_sp_net(mlxsw_sp), nve_ifindex);
if (!nve_dev)
goto out;
mlxsw_sp_nve_fdb_clear_offload(mlxsw_sp, fid, nve_dev, vni);
mlxsw_sp_fid_fdb_clear_offload(fid, nve_dev);
dev_put(nve_dev);
out:
mlxsw_sp_fid_vni_clear(fid);
mlxsw_sp_nve_tunnel_fini(mlxsw_sp);
}
int mlxsw_sp_port_nve_init(struct mlxsw_sp_port *mlxsw_sp_port)
{
struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
char tnqdr_pl[MLXSW_REG_TNQDR_LEN];
mlxsw_reg_tnqdr_pack(tnqdr_pl, mlxsw_sp_port->local_port);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tnqdr), tnqdr_pl);
}
void mlxsw_sp_port_nve_fini(struct mlxsw_sp_port *mlxsw_sp_port)
{
}
static int mlxsw_sp_nve_qos_init(struct mlxsw_sp *mlxsw_sp)
{
char tnqcr_pl[MLXSW_REG_TNQCR_LEN];
mlxsw_reg_tnqcr_pack(tnqcr_pl);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tnqcr), tnqcr_pl);
}
static int mlxsw_sp_nve_ecn_encap_init(struct mlxsw_sp *mlxsw_sp)
{
int i;
/* Iterate over inner ECN values */
for (i = INET_ECN_NOT_ECT; i <= INET_ECN_CE; i++) {
u8 outer_ecn = INET_ECN_encapsulate(0, i);
char tneem_pl[MLXSW_REG_TNEEM_LEN];
int err;
mlxsw_reg_tneem_pack(tneem_pl, i, outer_ecn);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tneem),
tneem_pl);
if (err)
return err;
}
return 0;
}
static int __mlxsw_sp_nve_ecn_decap_init(struct mlxsw_sp *mlxsw_sp,
u8 inner_ecn, u8 outer_ecn)
{
char tndem_pl[MLXSW_REG_TNDEM_LEN];
bool trap_en, set_ce = false;
u8 new_inner_ecn;
trap_en = !!__INET_ECN_decapsulate(outer_ecn, inner_ecn, &set_ce);
new_inner_ecn = set_ce ? INET_ECN_CE : inner_ecn;
mlxsw_reg_tndem_pack(tndem_pl, outer_ecn, inner_ecn, new_inner_ecn,
trap_en, trap_en ? MLXSW_TRAP_ID_DECAP_ECN0 : 0);
return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tndem), tndem_pl);
}
static int mlxsw_sp_nve_ecn_decap_init(struct mlxsw_sp *mlxsw_sp)
{
int i;
/* Iterate over inner ECN values */
for (i = INET_ECN_NOT_ECT; i <= INET_ECN_CE; i++) {
int j;
/* Iterate over outer ECN values */
for (j = INET_ECN_NOT_ECT; j <= INET_ECN_CE; j++) {
int err;
err = __mlxsw_sp_nve_ecn_decap_init(mlxsw_sp, i, j);
if (err)
return err;
}
}
return 0;
}
static int mlxsw_sp_nve_ecn_init(struct mlxsw_sp *mlxsw_sp)
{
int err;
err = mlxsw_sp_nve_ecn_encap_init(mlxsw_sp);
if (err)
return err;
return mlxsw_sp_nve_ecn_decap_init(mlxsw_sp);
}
static int mlxsw_sp_nve_resources_query(struct mlxsw_sp *mlxsw_sp)
{
unsigned int max;
if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_NVE_MC_ENTRIES_IPV4) ||
!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_NVE_MC_ENTRIES_IPV6))
return -EIO;
max = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_NVE_MC_ENTRIES_IPV4);
mlxsw_sp->nve->num_max_mc_entries[MLXSW_SP_L3_PROTO_IPV4] = max;
max = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_NVE_MC_ENTRIES_IPV6);
mlxsw_sp->nve->num_max_mc_entries[MLXSW_SP_L3_PROTO_IPV6] = max;
return 0;
}
int mlxsw_sp_nve_init(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_nve *nve;
int err;
nve = kzalloc(sizeof(*mlxsw_sp->nve), GFP_KERNEL);
if (!nve)
return -ENOMEM;
mlxsw_sp->nve = nve;
nve->mlxsw_sp = mlxsw_sp;
nve->nve_ops_arr = mlxsw_sp->nve_ops_arr;
err = rhashtable_init(&nve->mc_list_ht,
&mlxsw_sp_nve_mc_list_ht_params);
if (err)
goto err_rhashtable_init;
err = mlxsw_sp_nve_qos_init(mlxsw_sp);
if (err)
goto err_nve_qos_init;
err = mlxsw_sp_nve_ecn_init(mlxsw_sp);
if (err)
goto err_nve_ecn_init;
err = mlxsw_sp_nve_resources_query(mlxsw_sp);
if (err)
goto err_nve_resources_query;
return 0;
err_nve_resources_query:
err_nve_ecn_init:
err_nve_qos_init:
rhashtable_destroy(&nve->mc_list_ht);
err_rhashtable_init:
mlxsw_sp->nve = NULL;
kfree(nve);
return err;
}
void mlxsw_sp_nve_fini(struct mlxsw_sp *mlxsw_sp)
{
WARN_ON(mlxsw_sp->nve->num_nve_tunnels);
rhashtable_destroy(&mlxsw_sp->nve->mc_list_ht);
kfree(mlxsw_sp->nve);
mlxsw_sp->nve = NULL;
}
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