/*
* Copyright (c) 2016, Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <generated/utsrelease.h>
#include <linux/mlx5/fs.h>
#include <net/switchdev.h>
#include <net/pkt_cls.h>
#include <net/act_api.h>
#include <net/netevent.h>
#include <net/arp.h>
#include <net/devlink.h>
#include <net/ipv6_stubs.h>
#include "eswitch.h"
#include "en.h"
#include "en_rep.h"
#include "en_tc.h"
#include "en/tc_tun.h"
#include "fs_core.h"
#include "lib/port_tun.h"
#define CREATE_TRACE_POINTS
#include "diag/en_rep_tracepoint.h"
#define MLX5E_REP_PARAMS_DEF_LOG_SQ_SIZE \
max(0x7, MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE)
#define MLX5E_REP_PARAMS_DEF_NUM_CHANNELS 1
static const char mlx5e_rep_driver_name[] = "mlx5e_rep";
struct mlx5e_rep_indr_block_priv {
struct net_device *netdev;
struct mlx5e_rep_priv *rpriv;
struct list_head list;
};
static void mlx5e_rep_indr_unregister_block(struct mlx5e_rep_priv *rpriv,
struct net_device *netdev);
static void mlx5e_rep_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *drvinfo)
{
struct mlx5e_priv *priv = netdev_priv(dev);
struct mlx5_core_dev *mdev = priv->mdev;
strlcpy(drvinfo->driver, mlx5e_rep_driver_name,
sizeof(drvinfo->driver));
strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
"%d.%d.%04d (%.16s)",
fw_rev_maj(mdev), fw_rev_min(mdev),
fw_rev_sub(mdev), mdev->board_id);
}
static void mlx5e_uplink_rep_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *drvinfo)
{
struct mlx5e_priv *priv = netdev_priv(dev);
mlx5e_rep_get_drvinfo(dev, drvinfo);
strlcpy(drvinfo->bus_info, pci_name(priv->mdev->pdev),
sizeof(drvinfo->bus_info));
}
static const struct counter_desc sw_rep_stats_desc[] = {
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_packets) },
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_bytes) },
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_packets) },
{ MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_bytes) },
};
struct vport_stats {
u64 vport_rx_packets;
u64 vport_tx_packets;
u64 vport_rx_bytes;
u64 vport_tx_bytes;
};
static const struct counter_desc vport_rep_stats_desc[] = {
{ MLX5E_DECLARE_STAT(struct vport_stats, vport_rx_packets) },
{ MLX5E_DECLARE_STAT(struct vport_stats, vport_rx_bytes) },
{ MLX5E_DECLARE_STAT(struct vport_stats, vport_tx_packets) },
{ MLX5E_DECLARE_STAT(struct vport_stats, vport_tx_bytes) },
};
#define NUM_VPORT_REP_SW_COUNTERS ARRAY_SIZE(sw_rep_stats_desc)
#define NUM_VPORT_REP_HW_COUNTERS ARRAY_SIZE(vport_rep_stats_desc)
static void mlx5e_rep_get_strings(struct net_device *dev,
u32 stringset, uint8_t *data)
{
int i, j;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < NUM_VPORT_REP_SW_COUNTERS; i++)
strcpy(data + (i * ETH_GSTRING_LEN),
sw_rep_stats_desc[i].format);
for (j = 0; j < NUM_VPORT_REP_HW_COUNTERS; j++, i++)
strcpy(data + (i * ETH_GSTRING_LEN),
vport_rep_stats_desc[j].format);
break;
}
}
static void mlx5e_rep_update_hw_counters(struct mlx5e_priv *priv)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep = rpriv->rep;
struct rtnl_link_stats64 *vport_stats;
struct ifla_vf_stats vf_stats;
int err;
err = mlx5_eswitch_get_vport_stats(esw, rep->vport, &vf_stats);
if (err) {
pr_warn("vport %d error %d reading stats\n", rep->vport, err);
return;
}
vport_stats = &priv->stats.vf_vport;
/* flip tx/rx as we are reporting the counters for the switch vport */
vport_stats->rx_packets = vf_stats.tx_packets;
vport_stats->rx_bytes = vf_stats.tx_bytes;
vport_stats->tx_packets = vf_stats.rx_packets;
vport_stats->tx_bytes = vf_stats.rx_bytes;
}
static void mlx5e_uplink_rep_update_hw_counters(struct mlx5e_priv *priv)
{
struct mlx5e_pport_stats *pstats = &priv->stats.pport;
struct rtnl_link_stats64 *vport_stats;
mlx5e_grp_802_3_update_stats(priv);
vport_stats = &priv->stats.vf_vport;
vport_stats->rx_packets = PPORT_802_3_GET(pstats, a_frames_received_ok);
vport_stats->rx_bytes = PPORT_802_3_GET(pstats, a_octets_received_ok);
vport_stats->tx_packets = PPORT_802_3_GET(pstats, a_frames_transmitted_ok);
vport_stats->tx_bytes = PPORT_802_3_GET(pstats, a_octets_transmitted_ok);
}
static void mlx5e_rep_update_sw_counters(struct mlx5e_priv *priv)
{
struct mlx5e_sw_stats *s = &priv->stats.sw;
struct rtnl_link_stats64 stats64 = {};
memset(s, 0, sizeof(*s));
mlx5e_fold_sw_stats64(priv, &stats64);
s->rx_packets = stats64.rx_packets;
s->rx_bytes = stats64.rx_bytes;
s->tx_packets = stats64.tx_packets;
s->tx_bytes = stats64.tx_bytes;
s->tx_queue_dropped = stats64.tx_dropped;
}
static void mlx5e_rep_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
struct mlx5e_priv *priv = netdev_priv(dev);
int i, j;
if (!data)
return;
mutex_lock(&priv->state_lock);
mlx5e_rep_update_sw_counters(priv);
priv->profile->update_stats(priv);
mutex_unlock(&priv->state_lock);
for (i = 0; i < NUM_VPORT_REP_SW_COUNTERS; i++)
data[i] = MLX5E_READ_CTR64_CPU(&priv->stats.sw,
sw_rep_stats_desc, i);
for (j = 0; j < NUM_VPORT_REP_HW_COUNTERS; j++, i++)
data[i] = MLX5E_READ_CTR64_CPU(&priv->stats.vf_vport,
vport_rep_stats_desc, j);
}
static int mlx5e_rep_get_sset_count(struct net_device *dev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return NUM_VPORT_REP_SW_COUNTERS + NUM_VPORT_REP_HW_COUNTERS;
default:
return -EOPNOTSUPP;
}
}
static void mlx5e_rep_get_ringparam(struct net_device *dev,
struct ethtool_ringparam *param)
{
struct mlx5e_priv *priv = netdev_priv(dev);
mlx5e_ethtool_get_ringparam(priv, param);
}
static int mlx5e_rep_set_ringparam(struct net_device *dev,
struct ethtool_ringparam *param)
{
struct mlx5e_priv *priv = netdev_priv(dev);
return mlx5e_ethtool_set_ringparam(priv, param);
}
static int mlx5e_replace_rep_vport_rx_rule(struct mlx5e_priv *priv,
struct mlx5_flow_destination *dest)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep = rpriv->rep;
struct mlx5_flow_handle *flow_rule;
flow_rule = mlx5_eswitch_create_vport_rx_rule(esw,
rep->vport,
dest);
if (IS_ERR(flow_rule))
return PTR_ERR(flow_rule);
mlx5_del_flow_rules(rpriv->vport_rx_rule);
rpriv->vport_rx_rule = flow_rule;
return 0;
}
static void mlx5e_rep_get_channels(struct net_device *dev,
struct ethtool_channels *ch)
{
struct mlx5e_priv *priv = netdev_priv(dev);
mlx5e_ethtool_get_channels(priv, ch);
}
static int mlx5e_rep_set_channels(struct net_device *dev,
struct ethtool_channels *ch)
{
struct mlx5e_priv *priv = netdev_priv(dev);
u16 curr_channels_amount = priv->channels.params.num_channels;
u32 new_channels_amount = ch->combined_count;
struct mlx5_flow_destination new_dest;
int err = 0;
err = mlx5e_ethtool_set_channels(priv, ch);
if (err)
return err;
if (curr_channels_amount == 1 && new_channels_amount > 1) {
new_dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
new_dest.ft = priv->fs.ttc.ft.t;
} else if (new_channels_amount == 1 && curr_channels_amount > 1) {
new_dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
new_dest.tir_num = priv->direct_tir[0].tirn;
} else {
return 0;
}
err = mlx5e_replace_rep_vport_rx_rule(priv, &new_dest);
if (err) {
netdev_warn(priv->netdev, "Failed to update vport rx rule, when going from (%d) channels to (%d) channels\n",
curr_channels_amount, new_channels_amount);
return err;
}
return 0;
}
static int mlx5e_rep_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *coal)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
return mlx5e_ethtool_get_coalesce(priv, coal);
}
static int mlx5e_rep_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *coal)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
return mlx5e_ethtool_set_coalesce(priv, coal);
}
static u32 mlx5e_rep_get_rxfh_key_size(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
return mlx5e_ethtool_get_rxfh_key_size(priv);
}
static u32 mlx5e_rep_get_rxfh_indir_size(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
return mlx5e_ethtool_get_rxfh_indir_size(priv);
}
static void mlx5e_uplink_rep_get_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *pauseparam)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
mlx5e_ethtool_get_pauseparam(priv, pauseparam);
}
static int mlx5e_uplink_rep_set_pauseparam(struct net_device *netdev,
struct ethtool_pauseparam *pauseparam)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
return mlx5e_ethtool_set_pauseparam(priv, pauseparam);
}
static int mlx5e_uplink_rep_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *link_ksettings)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
return mlx5e_ethtool_get_link_ksettings(priv, link_ksettings);
}
static int mlx5e_uplink_rep_set_link_ksettings(struct net_device *netdev,
const struct ethtool_link_ksettings *link_ksettings)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
return mlx5e_ethtool_set_link_ksettings(priv, link_ksettings);
}
static const struct ethtool_ops mlx5e_rep_ethtool_ops = {
.get_drvinfo = mlx5e_rep_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_strings = mlx5e_rep_get_strings,
.get_sset_count = mlx5e_rep_get_sset_count,
.get_ethtool_stats = mlx5e_rep_get_ethtool_stats,
.get_ringparam = mlx5e_rep_get_ringparam,
.set_ringparam = mlx5e_rep_set_ringparam,
.get_channels = mlx5e_rep_get_channels,
.set_channels = mlx5e_rep_set_channels,
.get_coalesce = mlx5e_rep_get_coalesce,
.set_coalesce = mlx5e_rep_set_coalesce,
.get_rxfh_key_size = mlx5e_rep_get_rxfh_key_size,
.get_rxfh_indir_size = mlx5e_rep_get_rxfh_indir_size,
};
static const struct ethtool_ops mlx5e_uplink_rep_ethtool_ops = {
.get_drvinfo = mlx5e_uplink_rep_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_strings = mlx5e_rep_get_strings,
.get_sset_count = mlx5e_rep_get_sset_count,
.get_ethtool_stats = mlx5e_rep_get_ethtool_stats,
.get_ringparam = mlx5e_rep_get_ringparam,
.set_ringparam = mlx5e_rep_set_ringparam,
.get_channels = mlx5e_rep_get_channels,
.set_channels = mlx5e_rep_set_channels,
.get_coalesce = mlx5e_rep_get_coalesce,
.set_coalesce = mlx5e_rep_set_coalesce,
.get_link_ksettings = mlx5e_uplink_rep_get_link_ksettings,
.set_link_ksettings = mlx5e_uplink_rep_set_link_ksettings,
.get_rxfh_key_size = mlx5e_rep_get_rxfh_key_size,
.get_rxfh_indir_size = mlx5e_rep_get_rxfh_indir_size,
.get_pauseparam = mlx5e_uplink_rep_get_pauseparam,
.set_pauseparam = mlx5e_uplink_rep_set_pauseparam,
};
static void mlx5e_rep_get_port_parent_id(struct net_device *dev,
struct netdev_phys_item_id *ppid)
{
struct mlx5e_priv *priv;
u64 parent_id;
priv = netdev_priv(dev);
parent_id = mlx5_query_nic_system_image_guid(priv->mdev);
ppid->id_len = sizeof(parent_id);
memcpy(ppid->id, &parent_id, sizeof(parent_id));
}
static void mlx5e_sqs2vport_stop(struct mlx5_eswitch *esw,
struct mlx5_eswitch_rep *rep)
{
struct mlx5e_rep_sq *rep_sq, *tmp;
struct mlx5e_rep_priv *rpriv;
if (esw->mode != MLX5_ESWITCH_OFFLOADS)
return;
rpriv = mlx5e_rep_to_rep_priv(rep);
list_for_each_entry_safe(rep_sq, tmp, &rpriv->vport_sqs_list, list) {
mlx5_eswitch_del_send_to_vport_rule(rep_sq->send_to_vport_rule);
list_del(&rep_sq->list);
kfree(rep_sq);
}
}
static int mlx5e_sqs2vport_start(struct mlx5_eswitch *esw,
struct mlx5_eswitch_rep *rep,
u32 *sqns_array, int sqns_num)
{
struct mlx5_flow_handle *flow_rule;
struct mlx5e_rep_priv *rpriv;
struct mlx5e_rep_sq *rep_sq;
int err;
int i;
if (esw->mode != MLX5_ESWITCH_OFFLOADS)
return 0;
rpriv = mlx5e_rep_to_rep_priv(rep);
for (i = 0; i < sqns_num; i++) {
rep_sq = kzalloc(sizeof(*rep_sq), GFP_KERNEL);
if (!rep_sq) {
err = -ENOMEM;
goto out_err;
}
/* Add re-inject rule to the PF/representor sqs */
flow_rule = mlx5_eswitch_add_send_to_vport_rule(esw,
rep->vport,
sqns_array[i]);
if (IS_ERR(flow_rule)) {
err = PTR_ERR(flow_rule);
kfree(rep_sq);
goto out_err;
}
rep_sq->send_to_vport_rule = flow_rule;
list_add(&rep_sq->list, &rpriv->vport_sqs_list);
}
return 0;
out_err:
mlx5e_sqs2vport_stop(esw, rep);
return err;
}
int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep = rpriv->rep;
struct mlx5e_channel *c;
int n, tc, num_sqs = 0;
int err = -ENOMEM;
u32 *sqs;
sqs = kcalloc(priv->channels.num * priv->channels.params.num_tc, sizeof(*sqs), GFP_KERNEL);
if (!sqs)
goto out;
for (n = 0; n < priv->channels.num; n++) {
c = priv->channels.c[n];
for (tc = 0; tc < c->num_tc; tc++)
sqs[num_sqs++] = c->sq[tc].sqn;
}
err = mlx5e_sqs2vport_start(esw, rep, sqs, num_sqs);
kfree(sqs);
out:
if (err)
netdev_warn(priv->netdev, "Failed to add SQs FWD rules %d\n", err);
return err;
}
void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep = rpriv->rep;
mlx5e_sqs2vport_stop(esw, rep);
}
static unsigned long mlx5e_rep_ipv6_interval(void)
{
if (IS_ENABLED([31mCONFIG_IPV6[0m) && ipv6_stub->nd_tbl)
return NEIGH_VAR(&ipv6_stub->nd_tbl->parms, DELAY_PROBE_TIME);
return ~0UL;
}
static void mlx5e_rep_neigh_update_init_interval(struct mlx5e_rep_priv *rpriv)
{
unsigned long ipv4_interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME);
unsigned long ipv6_interval = mlx5e_rep_ipv6_interval();
struct net_device *netdev = rpriv->netdev;
struct mlx5e_priv *priv = netdev_priv(netdev);
rpriv->neigh_update.min_interval = min_t(unsigned long, ipv6_interval, ipv4_interval);
mlx5_fc_update_sampling_interval(priv->mdev, rpriv->neigh_update.min_interval);
}
void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5e_neigh_update_table *neigh_update = &rpriv->neigh_update;
mlx5_fc_queue_stats_work(priv->mdev,
&neigh_update->neigh_stats_work,
neigh_update->min_interval);
}
static bool mlx5e_rep_neigh_entry_hold(struct mlx5e_neigh_hash_entry *nhe)
{
return refcount_inc_not_zero(&nhe->refcnt);
}
static void mlx5e_rep_neigh_entry_remove(struct mlx5e_neigh_hash_entry *nhe);
static void mlx5e_rep_neigh_entry_release(struct mlx5e_neigh_hash_entry *nhe)
{
if (refcount_dec_and_test(&nhe->refcnt)) {
mlx5e_rep_neigh_entry_remove(nhe);
kfree_rcu(nhe, rcu);
}
}
static struct mlx5e_neigh_hash_entry *
mlx5e_get_next_nhe(struct mlx5e_rep_priv *rpriv,
struct mlx5e_neigh_hash_entry *nhe)
{
struct mlx5e_neigh_hash_entry *next = NULL;
rcu_read_lock();
for (next = nhe ?
list_next_or_null_rcu(&rpriv->neigh_update.neigh_list,
&nhe->neigh_list,
struct mlx5e_neigh_hash_entry,
neigh_list) :
list_first_or_null_rcu(&rpriv->neigh_update.neigh_list,
struct mlx5e_neigh_hash_entry,
neigh_list);
next;
next = list_next_or_null_rcu(&rpriv->neigh_update.neigh_list,
&next->neigh_list,
struct mlx5e_neigh_hash_entry,
neigh_list))
if (mlx5e_rep_neigh_entry_hold(next))
break;
rcu_read_unlock();
if (nhe)
mlx5e_rep_neigh_entry_release(nhe);
return next;
}
static void mlx5e_rep_neigh_stats_work(struct work_struct *work)
{
struct mlx5e_rep_priv *rpriv = container_of(work, struct mlx5e_rep_priv,
neigh_update.neigh_stats_work.work);
struct net_device *netdev = rpriv->netdev;
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5e_neigh_hash_entry *nhe = NULL;
rtnl_lock();
if (!list_empty(&rpriv->neigh_update.neigh_list))
mlx5e_rep_queue_neigh_stats_work(priv);
while ((nhe = mlx5e_get_next_nhe(rpriv, nhe)) != NULL)
mlx5e_tc_update_neigh_used_value(nhe);
rtnl_unlock();
}
static void mlx5e_rep_update_flows(struct mlx5e_priv *priv,
struct mlx5e_encap_entry *e,
bool neigh_connected,
unsigned char ha[ETH_ALEN])
{
struct ethhdr *eth = (struct ethhdr *)e->encap_header;
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
bool encap_connected;
LIST_HEAD(flow_list);
ASSERT_RTNL();
/* wait for encap to be fully initialized */
wait_for_completion(&e->res_ready);
mutex_lock(&esw->offloads.encap_tbl_lock);
encap_connected = !!(e->flags & MLX5_ENCAP_ENTRY_VALID);
if (e->compl_result < 0 || (encap_connected == neigh_connected &&
ether_addr_equal(e->h_dest, ha)))
goto unlock;
mlx5e_take_all_encap_flows(e, &flow_list);
if ((e->flags & MLX5_ENCAP_ENTRY_VALID) &&
(!neigh_connected || !ether_addr_equal(e->h_dest, ha)))
mlx5e_tc_encap_flows_del(priv, e, &flow_list);
if (neigh_connected && !(e->flags & MLX5_ENCAP_ENTRY_VALID)) {
ether_addr_copy(e->h_dest, ha);
ether_addr_copy(eth->h_dest, ha);
/* Update the encap source mac, in case that we delete
* the flows when encap source mac changed.
*/
ether_addr_copy(eth->h_source, e->route_dev->dev_addr);
mlx5e_tc_encap_flows_add(priv, e, &flow_list);
}
unlock:
mutex_unlock(&esw->offloads.encap_tbl_lock);
mlx5e_put_encap_flow_list(priv, &flow_list);
}
static void mlx5e_rep_neigh_update(struct work_struct *work)
{
struct mlx5e_neigh_hash_entry *nhe =
container_of(work, struct mlx5e_neigh_hash_entry, neigh_update_work);
struct neighbour *n = nhe->n;
struct mlx5e_encap_entry *e;
unsigned char ha[ETH_ALEN];
struct mlx5e_priv *priv;
bool neigh_connected;
u8 nud_state, dead;
rtnl_lock();
/* If these parameters are changed after we release the lock,
* we'll receive another event letting us know about it.
* We use this lock to avoid inconsistency between the neigh validity
* and it's hw address.
*/
read_lock_bh(&n->lock);
memcpy(ha, n->ha, ETH_ALEN);
nud_state = n->nud_state;
dead = n->dead;
read_unlock_bh(&n->lock);
neigh_connected = (nud_state & NUD_VALID) && !dead;
trace_mlx5e_rep_neigh_update(nhe, ha, neigh_connected);
list_for_each_entry(e, &nhe->encap_list, encap_list) {
if (!mlx5e_encap_take(e))
continue;
priv = netdev_priv(e->out_dev);
mlx5e_rep_update_flows(priv, e, neigh_connected, ha);
mlx5e_encap_put(priv, e);
}
mlx5e_rep_neigh_entry_release(nhe);
rtnl_unlock();
neigh_release(n);
}
static struct mlx5e_rep_indr_block_priv *
mlx5e_rep_indr_block_priv_lookup(struct mlx5e_rep_priv *rpriv,
struct net_device *netdev)
{
struct mlx5e_rep_indr_block_priv *cb_priv;
/* All callback list access should be protected by RTNL. */
ASSERT_RTNL();
list_for_each_entry(cb_priv,
&rpriv->uplink_priv.tc_indr_block_priv_list,
list)
if (cb_priv->netdev == netdev)
return cb_priv;
return NULL;
}
static void mlx5e_rep_indr_clean_block_privs(struct mlx5e_rep_priv *rpriv)
{
struct mlx5e_rep_indr_block_priv *cb_priv, *temp;
struct list_head *head = &rpriv->uplink_priv.tc_indr_block_priv_list;
list_for_each_entry_safe(cb_priv, temp, head, list) {
mlx5e_rep_indr_unregister_block(rpriv, cb_priv->netdev);
kfree(cb_priv);
}
}
static int
mlx5e_rep_indr_offload(struct net_device *netdev,
struct flow_cls_offload *flower,
struct mlx5e_rep_indr_block_priv *indr_priv)
{
unsigned long flags = MLX5_TC_FLAG(EGRESS) | MLX5_TC_FLAG(ESW_OFFLOAD);
struct mlx5e_priv *priv = netdev_priv(indr_priv->rpriv->netdev);
int err = 0;
switch (flower->command) {
case FLOW_CLS_REPLACE:
err = mlx5e_configure_flower(netdev, priv, flower, flags);
break;
case FLOW_CLS_DESTROY:
err = mlx5e_delete_flower(netdev, priv, flower, flags);
break;
case FLOW_CLS_STATS:
err = mlx5e_stats_flower(netdev, priv, flower, flags);
break;
default:
err = -EOPNOTSUPP;
}
return err;
}
static int mlx5e_rep_indr_setup_block_cb(enum tc_setup_type type,
void *type_data, void *indr_priv)
{
struct mlx5e_rep_indr_block_priv *priv = indr_priv;
switch (type) {
case TC_SETUP_CLSFLOWER:
return mlx5e_rep_indr_offload(priv->netdev, type_data, priv);
default:
return -EOPNOTSUPP;
}
}
static void mlx5e_rep_indr_tc_block_unbind(void *cb_priv)
{
struct mlx5e_rep_indr_block_priv *indr_priv = cb_priv;
list_del(&indr_priv->list);
kfree(indr_priv);
}
static LIST_HEAD(mlx5e_block_cb_list);
static int
mlx5e_rep_indr_setup_tc_block(struct net_device *netdev,
struct mlx5e_rep_priv *rpriv,
struct flow_block_offload *f)
{
struct mlx5e_rep_indr_block_priv *indr_priv;
struct flow_block_cb *block_cb;
if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
return -EOPNOTSUPP;
f->unlocked_driver_cb = true;
f->driver_block_list = &mlx5e_block_cb_list;
switch (f->command) {
case FLOW_BLOCK_BIND:
indr_priv = mlx5e_rep_indr_block_priv_lookup(rpriv, netdev);
if (indr_priv)
return -EEXIST;
indr_priv = kmalloc(sizeof(*indr_priv), GFP_KERNEL);
if (!indr_priv)
return -ENOMEM;
indr_priv->netdev = netdev;
indr_priv->rpriv = rpriv;
list_add(&indr_priv->list,
&rpriv->uplink_priv.tc_indr_block_priv_list);
block_cb = flow_block_cb_alloc(mlx5e_rep_indr_setup_block_cb,
indr_priv, indr_priv,
mlx5e_rep_indr_tc_block_unbind);
if (IS_ERR(block_cb)) {
list_del(&indr_priv->list);
kfree(indr_priv);
return PTR_ERR(block_cb);
}
flow_block_cb_add(block_cb, f);
list_add_tail(&block_cb->driver_list, &mlx5e_block_cb_list);
return 0;
case FLOW_BLOCK_UNBIND:
indr_priv = mlx5e_rep_indr_block_priv_lookup(rpriv, netdev);
if (!indr_priv)
return -ENOENT;
block_cb = flow_block_cb_lookup(f->block,
mlx5e_rep_indr_setup_block_cb,
indr_priv);
if (!block_cb)
return -ENOENT;
flow_block_cb_remove(block_cb, f);
list_del(&block_cb->driver_list);
return 0;
default:
return -EOPNOTSUPP;
}
return 0;
}
static
int mlx5e_rep_indr_setup_tc_cb(struct net_device *netdev, void *cb_priv,
enum tc_setup_type type, void *type_data)
{
switch (type) {
case TC_SETUP_BLOCK:
return mlx5e_rep_indr_setup_tc_block(netdev, cb_priv,
type_data);
default:
return -EOPNOTSUPP;
}
}
static int mlx5e_rep_indr_register_block(struct mlx5e_rep_priv *rpriv,
struct net_device *netdev)
{
int err;
err = __flow_indr_block_cb_register(netdev, rpriv,
mlx5e_rep_indr_setup_tc_cb,
rpriv);
if (err) {
struct mlx5e_priv *priv = netdev_priv(rpriv->netdev);
mlx5_core_err(priv->mdev, "Failed to register remote block notifier for %s err=%d\n",
netdev_name(netdev), err);
}
return err;
}
static void mlx5e_rep_indr_unregister_block(struct mlx5e_rep_priv *rpriv,
struct net_device *netdev)
{
__flow_indr_block_cb_unregister(netdev, mlx5e_rep_indr_setup_tc_cb,
rpriv);
}
static int mlx5e_nic_rep_netdevice_event(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct mlx5e_rep_priv *rpriv = container_of(nb, struct mlx5e_rep_priv,
uplink_priv.netdevice_nb);
struct mlx5e_priv *priv = netdev_priv(rpriv->netdev);
struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
if (!mlx5e_tc_tun_device_to_offload(priv, netdev) &&
!(is_vlan_dev(netdev) && vlan_dev_real_dev(netdev) == rpriv->netdev))
return NOTIFY_OK;
switch (event) {
case NETDEV_REGISTER:
mlx5e_rep_indr_register_block(rpriv, netdev);
break;
case NETDEV_UNREGISTER:
mlx5e_rep_indr_unregister_block(rpriv, netdev);
break;
}
return NOTIFY_OK;
}
static void
mlx5e_rep_queue_neigh_update_work(struct mlx5e_priv *priv,
struct mlx5e_neigh_hash_entry *nhe,
struct neighbour *n)
{
/* Take a reference to ensure the neighbour and mlx5 encap
* entry won't be destructed until we drop the reference in
* delayed work.
*/
neigh_hold(n);
/* This assignment is valid as long as the the neigh reference
* is taken
*/
nhe->n = n;
if (!queue_work(priv->wq, &nhe->neigh_update_work)) {
mlx5e_rep_neigh_entry_release(nhe);
neigh_release(n);
}
}
static struct mlx5e_neigh_hash_entry *
mlx5e_rep_neigh_entry_lookup(struct mlx5e_priv *priv,
struct mlx5e_neigh *m_neigh);
static int mlx5e_rep_netevent_event(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct mlx5e_rep_priv *rpriv = container_of(nb, struct mlx5e_rep_priv,
neigh_update.netevent_nb);
struct mlx5e_neigh_update_table *neigh_update = &rpriv->neigh_update;
struct net_device *netdev = rpriv->netdev;
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5e_neigh_hash_entry *nhe = NULL;
struct mlx5e_neigh m_neigh = {};
struct neigh_parms *p;
struct neighbour *n;
bool found = false;
switch (event) {
case NETEVENT_NEIGH_UPDATE:
n = ptr;
#if IS_ENABLED([31mCONFIG_IPV6[0m)
if (n->tbl != ipv6_stub->nd_tbl && n->tbl != &arp_tbl)
#else
if (n->tbl != &arp_tbl)
#endif
return NOTIFY_DONE;
m_neigh.dev = n->dev;
m_neigh.family = n->ops->family;
memcpy(&m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
rcu_read_lock();
nhe = mlx5e_rep_neigh_entry_lookup(priv, &m_neigh);
rcu_read_unlock();
if (!nhe)
return NOTIFY_DONE;
mlx5e_rep_queue_neigh_update_work(priv, nhe, n);
break;
case NETEVENT_DELAY_PROBE_TIME_UPDATE:
p = ptr;
/* We check the device is present since we don't care about
* changes in the default table, we only care about changes
* done per device delay prob time parameter.
*/
#if IS_ENABLED([31mCONFIG_IPV6[0m)
if (!p->dev || (p->tbl != ipv6_stub->nd_tbl && p->tbl != &arp_tbl))
#else
if (!p->dev || p->tbl != &arp_tbl)
#endif
return NOTIFY_DONE;
rcu_read_lock();
list_for_each_entry_rcu(nhe, &neigh_update->neigh_list,
neigh_list) {
if (p->dev == nhe->m_neigh.dev) {
found = true;
break;
}
}
rcu_read_unlock();
if (!found)
return NOTIFY_DONE;
neigh_update->min_interval = min_t(unsigned long,
NEIGH_VAR(p, DELAY_PROBE_TIME),
neigh_update->min_interval);
mlx5_fc_update_sampling_interval(priv->mdev,
neigh_update->min_interval);
break;
}
return NOTIFY_DONE;
}
static const struct rhashtable_params mlx5e_neigh_ht_params = {
.head_offset = offsetof(struct mlx5e_neigh_hash_entry, rhash_node),
.key_offset = offsetof(struct mlx5e_neigh_hash_entry, m_neigh),
.key_len = sizeof(struct mlx5e_neigh),
.automatic_shrinking = true,
};
static int mlx5e_rep_neigh_init(struct mlx5e_rep_priv *rpriv)
{
struct mlx5e_neigh_update_table *neigh_update = &rpriv->neigh_update;
int err;
err = rhashtable_init(&neigh_update->neigh_ht, &mlx5e_neigh_ht_params);
if (err)
return err;
INIT_LIST_HEAD(&neigh_update->neigh_list);
mutex_init(&neigh_update->encap_lock);
INIT_DELAYED_WORK(&neigh_update->neigh_stats_work,
mlx5e_rep_neigh_stats_work);
mlx5e_rep_neigh_update_init_interval(rpriv);
rpriv->neigh_update.netevent_nb.notifier_call = mlx5e_rep_netevent_event;
err = register_netevent_notifier(&rpriv->neigh_update.netevent_nb);
if (err)
goto out_err;
return 0;
out_err:
rhashtable_destroy(&neigh_update->neigh_ht);
return err;
}
static void mlx5e_rep_neigh_cleanup(struct mlx5e_rep_priv *rpriv)
{
struct mlx5e_neigh_update_table *neigh_update = &rpriv->neigh_update;
struct mlx5e_priv *priv = netdev_priv(rpriv->netdev);
unregister_netevent_notifier(&neigh_update->netevent_nb);
flush_workqueue(priv->wq); /* flush neigh update works */
cancel_delayed_work_sync(&rpriv->neigh_update.neigh_stats_work);
mutex_destroy(&neigh_update->encap_lock);
rhashtable_destroy(&neigh_update->neigh_ht);
}
static int mlx5e_rep_neigh_entry_insert(struct mlx5e_priv *priv,
struct mlx5e_neigh_hash_entry *nhe)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
int err;
err = rhashtable_insert_fast(&rpriv->neigh_update.neigh_ht,
&nhe->rhash_node,
mlx5e_neigh_ht_params);
if (err)
return err;
list_add_rcu(&nhe->neigh_list, &rpriv->neigh_update.neigh_list);
return err;
}
static void mlx5e_rep_neigh_entry_remove(struct mlx5e_neigh_hash_entry *nhe)
{
struct mlx5e_rep_priv *rpriv = nhe->priv->ppriv;
mutex_lock(&rpriv->neigh_update.encap_lock);
list_del_rcu(&nhe->neigh_list);
rhashtable_remove_fast(&rpriv->neigh_update.neigh_ht,
&nhe->rhash_node,
mlx5e_neigh_ht_params);
mutex_unlock(&rpriv->neigh_update.encap_lock);
}
/* This function must only be called under the representor's encap_lock or
* inside rcu read lock section.
*/
static struct mlx5e_neigh_hash_entry *
mlx5e_rep_neigh_entry_lookup(struct mlx5e_priv *priv,
struct mlx5e_neigh *m_neigh)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5e_neigh_update_table *neigh_update = &rpriv->neigh_update;
struct mlx5e_neigh_hash_entry *nhe;
nhe = rhashtable_lookup_fast(&neigh_update->neigh_ht, m_neigh,
mlx5e_neigh_ht_params);
return nhe && mlx5e_rep_neigh_entry_hold(nhe) ? nhe : NULL;
}
static int mlx5e_rep_neigh_entry_create(struct mlx5e_priv *priv,
struct mlx5e_encap_entry *e,
struct mlx5e_neigh_hash_entry **nhe)
{
int err;
*nhe = kzalloc(sizeof(**nhe), GFP_KERNEL);
if (!*nhe)
return -ENOMEM;
(*nhe)->priv = priv;
memcpy(&(*nhe)->m_neigh, &e->m_neigh, sizeof(e->m_neigh));
INIT_WORK(&(*nhe)->neigh_update_work, mlx5e_rep_neigh_update);
spin_lock_init(&(*nhe)->encap_list_lock);
INIT_LIST_HEAD(&(*nhe)->encap_list);
refcount_set(&(*nhe)->refcnt, 1);
err = mlx5e_rep_neigh_entry_insert(priv, *nhe);
if (err)
goto out_free;
return 0;
out_free:
kfree(*nhe);
return err;
}
int mlx5e_rep_encap_entry_attach(struct mlx5e_priv *priv,
struct mlx5e_encap_entry *e)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_rep_uplink_priv *uplink_priv = &rpriv->uplink_priv;
struct mlx5_tun_entropy *tun_entropy = &uplink_priv->tun_entropy;
struct mlx5e_neigh_hash_entry *nhe;
int err;
err = mlx5_tun_entropy_refcount_inc(tun_entropy, e->reformat_type);
if (err)
return err;
mutex_lock(&rpriv->neigh_update.encap_lock);
nhe = mlx5e_rep_neigh_entry_lookup(priv, &e->m_neigh);
if (!nhe) {
err = mlx5e_rep_neigh_entry_create(priv, e, &nhe);
if (err) {
mutex_unlock(&rpriv->neigh_update.encap_lock);
mlx5_tun_entropy_refcount_dec(tun_entropy,
e->reformat_type);
return err;
}
}
e->nhe = nhe;
spin_lock(&nhe->encap_list_lock);
list_add_rcu(&e->encap_list, &nhe->encap_list);
spin_unlock(&nhe->encap_list_lock);
mutex_unlock(&rpriv->neigh_update.encap_lock);
return 0;
}
void mlx5e_rep_encap_entry_detach(struct mlx5e_priv *priv,
struct mlx5e_encap_entry *e)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_rep_uplink_priv *uplink_priv = &rpriv->uplink_priv;
struct mlx5_tun_entropy *tun_entropy = &uplink_priv->tun_entropy;
if (!e->nhe)
return;
spin_lock(&e->nhe->encap_list_lock);
list_del_rcu(&e->encap_list);
spin_unlock(&e->nhe->encap_list_lock);
mlx5e_rep_neigh_entry_release(e->nhe);
e->nhe = NULL;
mlx5_tun_entropy_refcount_dec(tun_entropy, e->reformat_type);
}
static int mlx5e_rep_open(struct net_device *dev)
{
struct mlx5e_priv *priv = netdev_priv(dev);
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep = rpriv->rep;
int err;
mutex_lock(&priv->state_lock);
err = mlx5e_open_locked(dev);
if (err)
goto unlock;
if (!mlx5_modify_vport_admin_state(priv->mdev,
MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
rep->vport, 1,
MLX5_VPORT_ADMIN_STATE_UP))
netif_carrier_on(dev);
unlock:
mutex_unlock(&priv->state_lock);
return err;
}
static int mlx5e_rep_close(struct net_device *dev)
{
struct mlx5e_priv *priv = netdev_priv(dev);
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep = rpriv->rep;
int ret;
mutex_lock(&priv->state_lock);
mlx5_modify_vport_admin_state(priv->mdev,
MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
rep->vport, 1,
MLX5_VPORT_ADMIN_STATE_DOWN);
ret = mlx5e_close_locked(dev);
mutex_unlock(&priv->state_lock);
return ret;
}
static int
mlx5e_rep_setup_tc_cls_flower(struct mlx5e_priv *priv,
struct flow_cls_offload *cls_flower, int flags)
{
switch (cls_flower->command) {
case FLOW_CLS_REPLACE:
return mlx5e_configure_flower(priv->netdev, priv, cls_flower,
flags);
case FLOW_CLS_DESTROY:
return mlx5e_delete_flower(priv->netdev, priv, cls_flower,
flags);
case FLOW_CLS_STATS:
return mlx5e_stats_flower(priv->netdev, priv, cls_flower,
flags);
default:
return -EOPNOTSUPP;
}
}
static
int mlx5e_rep_setup_tc_cls_matchall(struct mlx5e_priv *priv,
struct tc_cls_matchall_offload *ma)
{
switch (ma->command) {
case TC_CLSMATCHALL_REPLACE:
return mlx5e_tc_configure_matchall(priv, ma);
case TC_CLSMATCHALL_DESTROY:
return mlx5e_tc_delete_matchall(priv, ma);
case TC_CLSMATCHALL_STATS:
mlx5e_tc_stats_matchall(priv, ma);
return 0;
default:
return -EOPNOTSUPP;
}
}
static int mlx5e_rep_setup_tc_cb(enum tc_setup_type type, void *type_data,
void *cb_priv)
{
unsigned long flags = MLX5_TC_FLAG(INGRESS) | MLX5_TC_FLAG(ESW_OFFLOAD);
struct mlx5e_priv *priv = cb_priv;
switch (type) {
case TC_SETUP_CLSFLOWER:
return mlx5e_rep_setup_tc_cls_flower(priv, type_data, flags);
case TC_SETUP_CLSMATCHALL:
return mlx5e_rep_setup_tc_cls_matchall(priv, type_data);
default:
return -EOPNOTSUPP;
}
}
static LIST_HEAD(mlx5e_rep_block_cb_list);
static int mlx5e_rep_setup_tc(struct net_device *dev, enum tc_setup_type type,
void *type_data)
{
struct mlx5e_priv *priv = netdev_priv(dev);
struct flow_block_offload *f = type_data;
switch (type) {
case TC_SETUP_BLOCK:
f->unlocked_driver_cb = true;
return flow_block_cb_setup_simple(type_data,
&mlx5e_rep_block_cb_list,
mlx5e_rep_setup_tc_cb,
priv, priv, true);
default:
return -EOPNOTSUPP;
}
}
bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep;
if (!MLX5_ESWITCH_MANAGER(priv->mdev))
return false;
if (!rpriv) /* non vport rep mlx5e instances don't use this field */
return false;
rep = rpriv->rep;
return (rep->vport == MLX5_VPORT_UPLINK);
}
static bool mlx5e_rep_has_offload_stats(const struct net_device *dev, int attr_id)
{
switch (attr_id) {
case IFLA_OFFLOAD_XSTATS_CPU_HIT:
return true;
}
return false;
}
static int
mlx5e_get_sw_stats64(const struct net_device *dev,
struct rtnl_link_stats64 *stats)
{
struct mlx5e_priv *priv = netdev_priv(dev);
mlx5e_fold_sw_stats64(priv, stats);
return 0;
}
static int mlx5e_rep_get_offload_stats(int attr_id, const struct net_device *dev,
void *sp)
{
switch (attr_id) {
case IFLA_OFFLOAD_XSTATS_CPU_HIT:
return mlx5e_get_sw_stats64(dev, sp);
}
return -EINVAL;
}
static void
mlx5e_rep_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)
{
struct mlx5e_priv *priv = netdev_priv(dev);
/* update HW stats in background for next time */
mlx5e_queue_update_stats(priv);
memcpy(stats, &priv->stats.vf_vport, sizeof(*stats));
}
static int mlx5e_rep_change_mtu(struct net_device *netdev, int new_mtu)
{
return mlx5e_change_mtu(netdev, new_mtu, NULL);
}
static int mlx5e_uplink_rep_change_mtu(struct net_device *netdev, int new_mtu)
{
return mlx5e_change_mtu(netdev, new_mtu, mlx5e_set_dev_port_mtu);
}
static int mlx5e_uplink_rep_set_mac(struct net_device *netdev, void *addr)
{
struct sockaddr *saddr = addr;
if (!is_valid_ether_addr(saddr->sa_data))
return -EADDRNOTAVAIL;
ether_addr_copy(netdev->dev_addr, saddr->sa_data);
return 0;
}
static int mlx5e_uplink_rep_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
__be16 vlan_proto)
{
netdev_warn_once(dev, "legacy vf vlan setting isn't supported in switchdev mode\n");
if (vlan != 0)
return -EOPNOTSUPP;
/* allow setting 0-vid for compatibility with libvirt */
return 0;
}
static struct devlink_port *mlx5e_get_devlink_port(struct net_device *dev)
{
struct mlx5e_priv *priv = netdev_priv(dev);
struct mlx5e_rep_priv *rpriv = priv->ppriv;
return &rpriv->dl_port;
}
static const struct net_device_ops mlx5e_netdev_ops_rep = {
.ndo_open = mlx5e_rep_open,
.ndo_stop = mlx5e_rep_close,
.ndo_start_xmit = mlx5e_xmit,
.ndo_setup_tc = mlx5e_rep_setup_tc,
.ndo_get_devlink_port = mlx5e_get_devlink_port,
.ndo_get_stats64 = mlx5e_rep_get_stats,
.ndo_has_offload_stats = mlx5e_rep_has_offload_stats,
.ndo_get_offload_stats = mlx5e_rep_get_offload_stats,
.ndo_change_mtu = mlx5e_rep_change_mtu,
};
static const struct net_device_ops mlx5e_netdev_ops_uplink_rep = {
.ndo_open = mlx5e_open,
.ndo_stop = mlx5e_close,
.ndo_start_xmit = mlx5e_xmit,
.ndo_set_mac_address = mlx5e_uplink_rep_set_mac,
.ndo_setup_tc = mlx5e_rep_setup_tc,
.ndo_get_devlink_port = mlx5e_get_devlink_port,
.ndo_get_stats64 = mlx5e_get_stats,
.ndo_has_offload_stats = mlx5e_rep_has_offload_stats,
.ndo_get_offload_stats = mlx5e_rep_get_offload_stats,
.ndo_change_mtu = mlx5e_uplink_rep_change_mtu,
.ndo_udp_tunnel_add = mlx5e_add_vxlan_port,
.ndo_udp_tunnel_del = mlx5e_del_vxlan_port,
.ndo_features_check = mlx5e_features_check,
.ndo_set_vf_mac = mlx5e_set_vf_mac,
.ndo_set_vf_rate = mlx5e_set_vf_rate,
.ndo_get_vf_config = mlx5e_get_vf_config,
.ndo_get_vf_stats = mlx5e_get_vf_stats,
.ndo_set_vf_vlan = mlx5e_uplink_rep_set_vf_vlan,
.ndo_set_features = mlx5e_set_features,
};
bool mlx5e_eswitch_rep(struct net_device *netdev)
{
if (netdev->netdev_ops == &mlx5e_netdev_ops_rep ||
netdev->netdev_ops == &mlx5e_netdev_ops_uplink_rep)
return true;
return false;
}
static void mlx5e_build_rep_params(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep = rpriv->rep;
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5e_params *params;
u8 cq_period_mode = MLX5_CAP_GEN(mdev, cq_period_start_from_cqe) ?
MLX5_CQ_PERIOD_MODE_START_FROM_CQE :
MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
params = &priv->channels.params;
params->hard_mtu = MLX5E_ETH_HARD_MTU;
params->sw_mtu = netdev->mtu;
/* SQ */
if (rep->vport == MLX5_VPORT_UPLINK)
params->log_sq_size = MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE;
else
params->log_sq_size = MLX5E_REP_PARAMS_DEF_LOG_SQ_SIZE;
/* RQ */
mlx5e_build_rq_params(mdev, params);
/* CQ moderation params */
params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
mlx5e_set_rx_cq_mode_params(params, cq_period_mode);
params->num_tc = 1;
params->tunneled_offload_en = false;
mlx5_query_min_inline(mdev, ¶ms->tx_min_inline_mode);
/* RSS */
mlx5e_build_rss_params(&priv->rss_params, params->num_channels);
}
static void mlx5e_build_rep_netdev(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep = rpriv->rep;
struct mlx5_core_dev *mdev = priv->mdev;
if (rep->vport == MLX5_VPORT_UPLINK) {
SET_NETDEV_DEV(netdev, mdev->device);
netdev->netdev_ops = &mlx5e_netdev_ops_uplink_rep;
/* we want a persistent mac for the uplink rep */
mlx5_query_mac_address(mdev, netdev->dev_addr);
netdev->ethtool_ops = &mlx5e_uplink_rep_ethtool_ops;
#ifdef [31mCONFIG_MLX5_CORE_EN_DCB[0m
if (MLX5_CAP_GEN(mdev, qos))
netdev->dcbnl_ops = &mlx5e_dcbnl_ops;
#endif
} else {
netdev->netdev_ops = &mlx5e_netdev_ops_rep;
eth_hw_addr_random(netdev);
netdev->ethtool_ops = &mlx5e_rep_ethtool_ops;
}
netdev->watchdog_timeo = 15 * HZ;
netdev->features |= NETIF_F_NETNS_LOCAL;
netdev->hw_features |= NETIF_F_HW_TC;
netdev->hw_features |= NETIF_F_SG;
netdev->hw_features |= NETIF_F_IP_CSUM;
netdev->hw_features |= NETIF_F_IPV6_CSUM;
netdev->hw_features |= NETIF_F_GRO;
netdev->hw_features |= NETIF_F_TSO;
netdev->hw_features |= NETIF_F_TSO6;
netdev->hw_features |= NETIF_F_RXCSUM;
if (rep->vport == MLX5_VPORT_UPLINK)
netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
else
netdev->features |= NETIF_F_VLAN_CHALLENGED;
netdev->features |= netdev->hw_features;
}
static int mlx5e_init_rep(struct mlx5_core_dev *mdev,
struct net_device *netdev,
const struct mlx5e_profile *profile,
void *ppriv)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
int err;
err = mlx5e_netdev_init(netdev, priv, mdev, profile, ppriv);
if (err)
return err;
priv->channels.params.num_channels = MLX5E_REP_PARAMS_DEF_NUM_CHANNELS;
mlx5e_build_rep_params(netdev);
mlx5e_build_rep_netdev(netdev);
mlx5e_timestamp_init(priv);
return 0;
}
static void mlx5e_cleanup_rep(struct mlx5e_priv *priv)
{
mlx5e_netdev_cleanup(priv->netdev, priv);
}
static int mlx5e_create_rep_ttc_table(struct mlx5e_priv *priv)
{
struct ttc_params ttc_params = {};
int tt, err;
priv->fs.ns = mlx5_get_flow_namespace(priv->mdev,
MLX5_FLOW_NAMESPACE_KERNEL);
/* The inner_ttc in the ttc params is intentionally not set */
ttc_params.any_tt_tirn = priv->direct_tir[0].tirn;
mlx5e_set_ttc_ft_params(&ttc_params);
for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
ttc_params.indir_tirn[tt] = priv->indir_tir[tt].tirn;
err = mlx5e_create_ttc_table(priv, &ttc_params, &priv->fs.ttc);
if (err) {
netdev_err(priv->netdev, "Failed to create rep ttc table, err=%d\n", err);
return err;
}
return 0;
}
static int mlx5e_create_rep_vport_rx_rule(struct mlx5e_priv *priv)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep = rpriv->rep;
struct mlx5_flow_handle *flow_rule;
struct mlx5_flow_destination dest;
dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
dest.tir_num = priv->direct_tir[0].tirn;
flow_rule = mlx5_eswitch_create_vport_rx_rule(esw,
rep->vport,
&dest);
if (IS_ERR(flow_rule))
return PTR_ERR(flow_rule);
rpriv->vport_rx_rule = flow_rule;
return 0;
}
static int mlx5e_init_rep_rx(struct mlx5e_priv *priv)
{
struct mlx5_core_dev *mdev = priv->mdev;
int err;
mlx5e_init_l2_addr(priv);
err = mlx5e_open_drop_rq(priv, &priv->drop_rq);
if (err) {
mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
return err;
}
err = mlx5e_create_indirect_rqt(priv);
if (err)
goto err_close_drop_rq;
err = mlx5e_create_direct_rqts(priv, priv->direct_tir);
if (err)
goto err_destroy_indirect_rqts;
err = mlx5e_create_indirect_tirs(priv, false);
if (err)
goto err_destroy_direct_rqts;
err = mlx5e_create_direct_tirs(priv, priv->direct_tir);
if (err)
goto err_destroy_indirect_tirs;
err = mlx5e_create_rep_ttc_table(priv);
if (err)
goto err_destroy_direct_tirs;
err = mlx5e_create_rep_vport_rx_rule(priv);
if (err)
goto err_destroy_ttc_table;
return 0;
err_destroy_ttc_table:
mlx5e_destroy_ttc_table(priv, &priv->fs.ttc);
err_destroy_direct_tirs:
mlx5e_destroy_direct_tirs(priv, priv->direct_tir);
err_destroy_indirect_tirs:
mlx5e_destroy_indirect_tirs(priv, false);
err_destroy_direct_rqts:
mlx5e_destroy_direct_rqts(priv, priv->direct_tir);
err_destroy_indirect_rqts:
mlx5e_destroy_rqt(priv, &priv->indir_rqt);
err_close_drop_rq:
mlx5e_close_drop_rq(&priv->drop_rq);
return err;
}
static void mlx5e_cleanup_rep_rx(struct mlx5e_priv *priv)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
mlx5_del_flow_rules(rpriv->vport_rx_rule);
mlx5e_destroy_ttc_table(priv, &priv->fs.ttc);
mlx5e_destroy_direct_tirs(priv, priv->direct_tir);
mlx5e_destroy_indirect_tirs(priv, false);
mlx5e_destroy_direct_rqts(priv, priv->direct_tir);
mlx5e_destroy_rqt(priv, &priv->indir_rqt);
mlx5e_close_drop_rq(&priv->drop_rq);
}
static int mlx5e_init_rep_tx(struct mlx5e_priv *priv)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_rep_uplink_priv *uplink_priv;
int err;
err = mlx5e_create_tises(priv);
if (err) {
mlx5_core_warn(priv->mdev, "create tises failed, %d\n", err);
return err;
}
if (rpriv->rep->vport == MLX5_VPORT_UPLINK) {
uplink_priv = &rpriv->uplink_priv;
mutex_init(&uplink_priv->unready_flows_lock);
INIT_LIST_HEAD(&uplink_priv->unready_flows);
/* init shared tc flow table */
err = mlx5e_tc_esw_init(&uplink_priv->tc_ht);
if (err)
goto destroy_tises;
mlx5_init_port_tun_entropy(&uplink_priv->tun_entropy, priv->mdev);
/* init indirect block notifications */
INIT_LIST_HEAD(&uplink_priv->tc_indr_block_priv_list);
uplink_priv->netdevice_nb.notifier_call = mlx5e_nic_rep_netdevice_event;
err = register_netdevice_notifier(&uplink_priv->netdevice_nb);
if (err) {
mlx5_core_err(priv->mdev, "Failed to register netdev notifier\n");
goto tc_esw_cleanup;
}
}
return 0;
tc_esw_cleanup:
mlx5e_tc_esw_cleanup(&uplink_priv->tc_ht);
destroy_tises:
mlx5e_destroy_tises(priv);
return err;
}
static void mlx5e_cleanup_rep_tx(struct mlx5e_priv *priv)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
mlx5e_destroy_tises(priv);
if (rpriv->rep->vport == MLX5_VPORT_UPLINK) {
/* clean indirect TC block notifications */
unregister_netdevice_notifier(&rpriv->uplink_priv.netdevice_nb);
mlx5e_rep_indr_clean_block_privs(rpriv);
/* delete shared tc flow table */
mlx5e_tc_esw_cleanup(&rpriv->uplink_priv.tc_ht);
mutex_destroy(&rpriv->uplink_priv.unready_flows_lock);
}
}
static void mlx5e_rep_enable(struct mlx5e_priv *priv)
{
mlx5e_set_netdev_mtu_boundaries(priv);
}
static int mlx5e_update_rep_rx(struct mlx5e_priv *priv)
{
return 0;
}
static int uplink_rep_async_event(struct notifier_block *nb, unsigned long event, void *data)
{
struct mlx5e_priv *priv = container_of(nb, struct mlx5e_priv, events_nb);
if (event == MLX5_EVENT_TYPE_PORT_CHANGE) {
struct mlx5_eqe *eqe = data;
switch (eqe->sub_type) {
case MLX5_PORT_CHANGE_SUBTYPE_DOWN:
case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE:
queue_work(priv->wq, &priv->update_carrier_work);
break;
default:
return NOTIFY_DONE;
}
return NOTIFY_OK;
}
if (event == MLX5_DEV_EVENT_PORT_AFFINITY) {
struct mlx5e_rep_priv *rpriv = priv->ppriv;
queue_work(priv->wq, &rpriv->uplink_priv.reoffload_flows_work);
return NOTIFY_OK;
}
return NOTIFY_DONE;
}
static void mlx5e_uplink_rep_enable(struct mlx5e_priv *priv)
{
struct net_device *netdev = priv->netdev;
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5e_rep_priv *rpriv = priv->ppriv;
u16 max_mtu;
netdev->min_mtu = ETH_MIN_MTU;
mlx5_query_port_max_mtu(priv->mdev, &max_mtu, 1);
netdev->max_mtu = MLX5E_HW2SW_MTU(&priv->channels.params, max_mtu);
mlx5e_set_dev_port_mtu(priv);
INIT_WORK(&rpriv->uplink_priv.reoffload_flows_work,
mlx5e_tc_reoffload_flows_work);
mlx5_lag_add(mdev, netdev);
priv->events_nb.notifier_call = uplink_rep_async_event;
mlx5_notifier_register(mdev, &priv->events_nb);
#ifdef [31mCONFIG_MLX5_CORE_EN_DCB[0m
mlx5e_dcbnl_initialize(priv);
mlx5e_dcbnl_init_app(priv);
#endif
}
static void mlx5e_uplink_rep_disable(struct mlx5e_priv *priv)
{
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5e_rep_priv *rpriv = priv->ppriv;
#ifdef [31mCONFIG_MLX5_CORE_EN_DCB[0m
mlx5e_dcbnl_delete_app(priv);
#endif
mlx5_notifier_unregister(mdev, &priv->events_nb);
cancel_work_sync(&rpriv->uplink_priv.reoffload_flows_work);
mlx5_lag_remove(mdev);
}
static const struct mlx5e_profile mlx5e_rep_profile = {
.init = mlx5e_init_rep,
.cleanup = mlx5e_cleanup_rep,
.init_rx = mlx5e_init_rep_rx,
.cleanup_rx = mlx5e_cleanup_rep_rx,
.init_tx = mlx5e_init_rep_tx,
.cleanup_tx = mlx5e_cleanup_rep_tx,
.enable = mlx5e_rep_enable,
.update_rx = mlx5e_update_rep_rx,
.update_stats = mlx5e_rep_update_hw_counters,
.rx_handlers.handle_rx_cqe = mlx5e_handle_rx_cqe_rep,
.rx_handlers.handle_rx_cqe_mpwqe = mlx5e_handle_rx_cqe_mpwrq,
.max_tc = 1,
.rq_groups = MLX5E_NUM_RQ_GROUPS(REGULAR),
};
static const struct mlx5e_profile mlx5e_uplink_rep_profile = {
.init = mlx5e_init_rep,
.cleanup = mlx5e_cleanup_rep,
.init_rx = mlx5e_init_rep_rx,
.cleanup_rx = mlx5e_cleanup_rep_rx,
.init_tx = mlx5e_init_rep_tx,
.cleanup_tx = mlx5e_cleanup_rep_tx,
.enable = mlx5e_uplink_rep_enable,
.disable = mlx5e_uplink_rep_disable,
.update_rx = mlx5e_update_rep_rx,
.update_stats = mlx5e_uplink_rep_update_hw_counters,
.update_carrier = mlx5e_update_carrier,
.rx_handlers.handle_rx_cqe = mlx5e_handle_rx_cqe_rep,
.rx_handlers.handle_rx_cqe_mpwqe = mlx5e_handle_rx_cqe_mpwrq,
.max_tc = MLX5E_MAX_NUM_TC,
.rq_groups = MLX5E_NUM_RQ_GROUPS(REGULAR),
};
static bool
is_devlink_port_supported(const struct mlx5_core_dev *dev,
const struct mlx5e_rep_priv *rpriv)
{
return rpriv->rep->vport == MLX5_VPORT_UPLINK ||
rpriv->rep->vport == MLX5_VPORT_PF ||
mlx5_eswitch_is_vf_vport(dev->priv.eswitch, rpriv->rep->vport);
}
static unsigned int
vport_to_devlink_port_index(const struct mlx5_core_dev *dev, u16 vport_num)
{
return (MLX5_CAP_GEN(dev, vhca_id) << 16) | vport_num;
}
static int register_devlink_port(struct mlx5_core_dev *dev,
struct mlx5e_rep_priv *rpriv)
{
struct devlink *devlink = priv_to_devlink(dev);
struct mlx5_eswitch_rep *rep = rpriv->rep;
struct netdev_phys_item_id ppid = {};
unsigned int dl_port_index = 0;
if (!is_devlink_port_supported(dev, rpriv))
return 0;
mlx5e_rep_get_port_parent_id(rpriv->netdev, &ppid);
if (rep->vport == MLX5_VPORT_UPLINK) {
devlink_port_attrs_set(&rpriv->dl_port,
DEVLINK_PORT_FLAVOUR_PHYSICAL,
PCI_FUNC(dev->pdev->devfn), false, 0,
&ppid.id[0], ppid.id_len);
dl_port_index = vport_to_devlink_port_index(dev, rep->vport);
} else if (rep->vport == MLX5_VPORT_PF) {
devlink_port_attrs_pci_pf_set(&rpriv->dl_port,
&ppid.id[0], ppid.id_len,
dev->pdev->devfn);
dl_port_index = rep->vport;
} else if (mlx5_eswitch_is_vf_vport(dev->priv.eswitch,
rpriv->rep->vport)) {
devlink_port_attrs_pci_vf_set(&rpriv->dl_port,
&ppid.id[0], ppid.id_len,
dev->pdev->devfn,
rep->vport - 1);
dl_port_index = vport_to_devlink_port_index(dev, rep->vport);
}
return devlink_port_register(devlink, &rpriv->dl_port, dl_port_index);
}
static void unregister_devlink_port(struct mlx5_core_dev *dev,
struct mlx5e_rep_priv *rpriv)
{
if (is_devlink_port_supported(dev, rpriv))
devlink_port_unregister(&rpriv->dl_port);
}
/* e-Switch vport representors */
static int
mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
{
const struct mlx5e_profile *profile;
struct mlx5e_rep_priv *rpriv;
struct net_device *netdev;
int nch, err;
rpriv = kzalloc(sizeof(*rpriv), GFP_KERNEL);
if (!rpriv)
return -ENOMEM;
/* rpriv->rep to be looked up when profile->init() is called */
rpriv->rep = rep;
nch = mlx5e_get_max_num_channels(dev);
profile = (rep->vport == MLX5_VPORT_UPLINK) ?
&mlx5e_uplink_rep_profile : &mlx5e_rep_profile;
netdev = mlx5e_create_netdev(dev, profile, nch, rpriv);
if (!netdev) {
pr_warn("Failed to create representor netdev for vport %d\n",
rep->vport);
kfree(rpriv);
return -EINVAL;
}
rpriv->netdev = netdev;
rep->rep_data[REP_ETH].priv = rpriv;
INIT_LIST_HEAD(&rpriv->vport_sqs_list);
if (rep->vport == MLX5_VPORT_UPLINK) {
err = mlx5e_create_mdev_resources(dev);
if (err)
goto err_destroy_netdev;
}
err = mlx5e_attach_netdev(netdev_priv(netdev));
if (err) {
pr_warn("Failed to attach representor netdev for vport %d\n",
rep->vport);
goto err_destroy_mdev_resources;
}
err = mlx5e_rep_neigh_init(rpriv);
if (err) {
pr_warn("Failed to initialized neighbours handling for vport %d\n",
rep->vport);
goto err_detach_netdev;
}
err = register_devlink_port(dev, rpriv);
if (err) {
esw_warn(dev, "Failed to register devlink port %d\n",
rep->vport);
goto err_neigh_cleanup;
}
err = register_netdev(netdev);
if (err) {
pr_warn("Failed to register representor netdev for vport %d\n",
rep->vport);
goto err_devlink_cleanup;
}
if (is_devlink_port_supported(dev, rpriv))
devlink_port_type_eth_set(&rpriv->dl_port, netdev);
return 0;
err_devlink_cleanup:
unregister_devlink_port(dev, rpriv);
err_neigh_cleanup:
mlx5e_rep_neigh_cleanup(rpriv);
err_detach_netdev:
mlx5e_detach_netdev(netdev_priv(netdev));
err_destroy_mdev_resources:
if (rep->vport == MLX5_VPORT_UPLINK)
mlx5e_destroy_mdev_resources(dev);
err_destroy_netdev:
mlx5e_destroy_netdev(netdev_priv(netdev));
kfree(rpriv);
return err;
}
static void
mlx5e_vport_rep_unload(struct mlx5_eswitch_rep *rep)
{
struct mlx5e_rep_priv *rpriv = mlx5e_rep_to_rep_priv(rep);
struct net_device *netdev = rpriv->netdev;
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5_core_dev *dev = priv->mdev;
void *ppriv = priv->ppriv;
if (is_devlink_port_supported(dev, rpriv))
devlink_port_type_clear(&rpriv->dl_port);
unregister_netdev(netdev);
unregister_devlink_port(dev, rpriv);
mlx5e_rep_neigh_cleanup(rpriv);
mlx5e_detach_netdev(priv);
if (rep->vport == MLX5_VPORT_UPLINK)
mlx5e_destroy_mdev_resources(priv->mdev);
mlx5e_destroy_netdev(priv);
kfree(ppriv); /* mlx5e_rep_priv */
}
static void *mlx5e_vport_rep_get_proto_dev(struct mlx5_eswitch_rep *rep)
{
struct mlx5e_rep_priv *rpriv;
rpriv = mlx5e_rep_to_rep_priv(rep);
return rpriv->netdev;
}
static const struct mlx5_eswitch_rep_ops rep_ops = {
.load = mlx5e_vport_rep_load,
.unload = mlx5e_vport_rep_unload,
.get_proto_dev = mlx5e_vport_rep_get_proto_dev
};
void mlx5e_rep_register_vport_reps(struct mlx5_core_dev *mdev)
{
struct mlx5_eswitch *esw = mdev->priv.eswitch;
mlx5_eswitch_register_vport_reps(esw, &rep_ops, REP_ETH);
}
void mlx5e_rep_unregister_vport_reps(struct mlx5_core_dev *mdev)
{
struct mlx5_eswitch *esw = mdev->priv.eswitch;
mlx5_eswitch_unregister_vport_reps(esw, REP_ETH);
}