diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/en_netdev.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 3686 |
1 files changed, 3686 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c new file mode 100644 index 000000000..14d46afd2 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -0,0 +1,3686 @@ +/* + * Copyright (c) 2007 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 <linux/bpf.h> +#include <linux/etherdevice.h> +#include <linux/tcp.h> +#include <linux/if_vlan.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/hash.h> +#include <net/ip.h> +#include <net/busy_poll.h> +#include <net/vxlan.h> +#include <net/devlink.h> + +#include <linux/mlx4/driver.h> +#include <linux/mlx4/device.h> +#include <linux/mlx4/cmd.h> +#include <linux/mlx4/cq.h> + +#include "mlx4_en.h" +#include "en_port.h" + +#define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \ + XDP_PACKET_HEADROOM)) + +int mlx4_en_setup_tc(struct net_device *dev, u8 up) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + int i; + unsigned int offset = 0; + + if (up && up != MLX4_EN_NUM_UP_HIGH) + return -EINVAL; + + netdev_set_num_tc(dev, up); + netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]); + /* Partition Tx queues evenly amongst UP's */ + for (i = 0; i < up; i++) { + netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset); + offset += priv->num_tx_rings_p_up; + } + +#ifdef CONFIG_MLX4_EN_DCB + if (!mlx4_is_slave(priv->mdev->dev)) { + if (up) { + if (priv->dcbx_cap) + priv->flags |= MLX4_EN_FLAG_DCB_ENABLED; + } else { + priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED; + priv->cee_config.pfc_state = false; + } + } +#endif /* CONFIG_MLX4_EN_DCB */ + + return 0; +} + +int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_en_port_profile new_prof; + struct mlx4_en_priv *tmp; + int total_count; + int port_up = 0; + int err = 0; + + tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + mutex_lock(&mdev->state_lock); + memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile)); + new_prof.num_up = (tc == 0) ? MLX4_EN_NUM_UP_LOW : + MLX4_EN_NUM_UP_HIGH; + new_prof.tx_ring_num[TX] = new_prof.num_tx_rings_p_up * + new_prof.num_up; + total_count = new_prof.tx_ring_num[TX] + new_prof.tx_ring_num[TX_XDP]; + if (total_count > MAX_TX_RINGS) { + err = -EINVAL; + en_err(priv, + "Total number of TX and XDP rings (%d) exceeds the maximum supported (%d)\n", + total_count, MAX_TX_RINGS); + goto out; + } + err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true); + if (err) + goto out; + + if (priv->port_up) { + port_up = 1; + mlx4_en_stop_port(dev, 1); + } + + mlx4_en_safe_replace_resources(priv, tmp); + if (port_up) { + err = mlx4_en_start_port(dev); + if (err) { + en_err(priv, "Failed starting port for setup TC\n"); + goto out; + } + } + + err = mlx4_en_setup_tc(dev, tc); +out: + mutex_unlock(&mdev->state_lock); + kfree(tmp); + return err; +} + +static int __mlx4_en_setup_tc(struct net_device *dev, enum tc_setup_type type, + void *type_data) +{ + struct tc_mqprio_qopt *mqprio = type_data; + + if (type != TC_SETUP_QDISC_MQPRIO) + return -EOPNOTSUPP; + + if (mqprio->num_tc && mqprio->num_tc != MLX4_EN_NUM_UP_HIGH) + return -EINVAL; + + mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; + + return mlx4_en_alloc_tx_queue_per_tc(dev, mqprio->num_tc); +} + +#ifdef CONFIG_RFS_ACCEL + +struct mlx4_en_filter { + struct list_head next; + struct work_struct work; + + u8 ip_proto; + __be32 src_ip; + __be32 dst_ip; + __be16 src_port; + __be16 dst_port; + + int rxq_index; + struct mlx4_en_priv *priv; + u32 flow_id; /* RFS infrastructure id */ + int id; /* mlx4_en driver id */ + u64 reg_id; /* Flow steering API id */ + u8 activated; /* Used to prevent expiry before filter + * is attached + */ + struct hlist_node filter_chain; +}; + +static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv); + +static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto) +{ + switch (ip_proto) { + case IPPROTO_UDP: + return MLX4_NET_TRANS_RULE_ID_UDP; + case IPPROTO_TCP: + return MLX4_NET_TRANS_RULE_ID_TCP; + default: + return MLX4_NET_TRANS_RULE_NUM; + } +}; + +/* Must not acquire state_lock, as its corresponding work_sync + * is done under it. + */ +static void mlx4_en_filter_work(struct work_struct *work) +{ + struct mlx4_en_filter *filter = container_of(work, + struct mlx4_en_filter, + work); + struct mlx4_en_priv *priv = filter->priv; + struct mlx4_spec_list spec_tcp_udp = { + .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto), + { + .tcp_udp = { + .dst_port = filter->dst_port, + .dst_port_msk = (__force __be16)-1, + .src_port = filter->src_port, + .src_port_msk = (__force __be16)-1, + }, + }, + }; + struct mlx4_spec_list spec_ip = { + .id = MLX4_NET_TRANS_RULE_ID_IPV4, + { + .ipv4 = { + .dst_ip = filter->dst_ip, + .dst_ip_msk = (__force __be32)-1, + .src_ip = filter->src_ip, + .src_ip_msk = (__force __be32)-1, + }, + }, + }; + struct mlx4_spec_list spec_eth = { + .id = MLX4_NET_TRANS_RULE_ID_ETH, + }; + struct mlx4_net_trans_rule rule = { + .list = LIST_HEAD_INIT(rule.list), + .queue_mode = MLX4_NET_TRANS_Q_LIFO, + .exclusive = 1, + .allow_loopback = 1, + .promisc_mode = MLX4_FS_REGULAR, + .port = priv->port, + .priority = MLX4_DOMAIN_RFS, + }; + int rc; + __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); + + if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) { + en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n", + filter->ip_proto); + goto ignore; + } + list_add_tail(&spec_eth.list, &rule.list); + list_add_tail(&spec_ip.list, &rule.list); + list_add_tail(&spec_tcp_udp.list, &rule.list); + + rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn; + memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN); + memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); + + filter->activated = 0; + + if (filter->reg_id) { + rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); + if (rc && rc != -ENOENT) + en_err(priv, "Error detaching flow. rc = %d\n", rc); + } + + rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id); + if (rc) + en_err(priv, "Error attaching flow. err = %d\n", rc); + +ignore: + mlx4_en_filter_rfs_expire(priv); + + filter->activated = 1; +} + +static inline struct hlist_head * +filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, + __be16 src_port, __be16 dst_port) +{ + unsigned long l; + int bucket_idx; + + l = (__force unsigned long)src_port | + ((__force unsigned long)dst_port << 2); + l ^= (__force unsigned long)(src_ip ^ dst_ip); + + bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT); + + return &priv->filter_hash[bucket_idx]; +} + +static struct mlx4_en_filter * +mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip, + __be32 dst_ip, u8 ip_proto, __be16 src_port, + __be16 dst_port, u32 flow_id) +{ + struct mlx4_en_filter *filter = NULL; + + filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC); + if (!filter) + return NULL; + + filter->priv = priv; + filter->rxq_index = rxq_index; + INIT_WORK(&filter->work, mlx4_en_filter_work); + + filter->src_ip = src_ip; + filter->dst_ip = dst_ip; + filter->ip_proto = ip_proto; + filter->src_port = src_port; + filter->dst_port = dst_port; + + filter->flow_id = flow_id; + + filter->id = priv->last_filter_id++ % RPS_NO_FILTER; + + list_add_tail(&filter->next, &priv->filters); + hlist_add_head(&filter->filter_chain, + filter_hash_bucket(priv, src_ip, dst_ip, src_port, + dst_port)); + + return filter; +} + +static void mlx4_en_filter_free(struct mlx4_en_filter *filter) +{ + struct mlx4_en_priv *priv = filter->priv; + int rc; + + list_del(&filter->next); + + rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id); + if (rc && rc != -ENOENT) + en_err(priv, "Error detaching flow. rc = %d\n", rc); + + kfree(filter); +} + +static inline struct mlx4_en_filter * +mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip, + u8 ip_proto, __be16 src_port, __be16 dst_port) +{ + struct mlx4_en_filter *filter; + struct mlx4_en_filter *ret = NULL; + + hlist_for_each_entry(filter, + filter_hash_bucket(priv, src_ip, dst_ip, + src_port, dst_port), + filter_chain) { + if (filter->src_ip == src_ip && + filter->dst_ip == dst_ip && + filter->ip_proto == ip_proto && + filter->src_port == src_port && + filter->dst_port == dst_port) { + ret = filter; + break; + } + } + + return ret; +} + +static int +mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, + u16 rxq_index, u32 flow_id) +{ + struct mlx4_en_priv *priv = netdev_priv(net_dev); + struct mlx4_en_filter *filter; + const struct iphdr *ip; + const __be16 *ports; + u8 ip_proto; + __be32 src_ip; + __be32 dst_ip; + __be16 src_port; + __be16 dst_port; + int nhoff = skb_network_offset(skb); + int ret = 0; + + if (skb->encapsulation) + return -EPROTONOSUPPORT; + + if (skb->protocol != htons(ETH_P_IP)) + return -EPROTONOSUPPORT; + + ip = (const struct iphdr *)(skb->data + nhoff); + if (ip_is_fragment(ip)) + return -EPROTONOSUPPORT; + + if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP)) + return -EPROTONOSUPPORT; + ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); + + ip_proto = ip->protocol; + src_ip = ip->saddr; + dst_ip = ip->daddr; + src_port = ports[0]; + dst_port = ports[1]; + + spin_lock_bh(&priv->filters_lock); + filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto, + src_port, dst_port); + if (filter) { + if (filter->rxq_index == rxq_index) + goto out; + + filter->rxq_index = rxq_index; + } else { + filter = mlx4_en_filter_alloc(priv, rxq_index, + src_ip, dst_ip, ip_proto, + src_port, dst_port, flow_id); + if (!filter) { + ret = -ENOMEM; + goto err; + } + } + + queue_work(priv->mdev->workqueue, &filter->work); + +out: + ret = filter->id; +err: + spin_unlock_bh(&priv->filters_lock); + + return ret; +} + +void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv) +{ + struct mlx4_en_filter *filter, *tmp; + LIST_HEAD(del_list); + + spin_lock_bh(&priv->filters_lock); + list_for_each_entry_safe(filter, tmp, &priv->filters, next) { + list_move(&filter->next, &del_list); + hlist_del(&filter->filter_chain); + } + spin_unlock_bh(&priv->filters_lock); + + list_for_each_entry_safe(filter, tmp, &del_list, next) { + cancel_work_sync(&filter->work); + mlx4_en_filter_free(filter); + } +} + +static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv) +{ + struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL; + LIST_HEAD(del_list); + int i = 0; + + spin_lock_bh(&priv->filters_lock); + list_for_each_entry_safe(filter, tmp, &priv->filters, next) { + if (i > MLX4_EN_FILTER_EXPIRY_QUOTA) + break; + + if (filter->activated && + !work_pending(&filter->work) && + rps_may_expire_flow(priv->dev, + filter->rxq_index, filter->flow_id, + filter->id)) { + list_move(&filter->next, &del_list); + hlist_del(&filter->filter_chain); + } else + last_filter = filter; + + i++; + } + + if (last_filter && (&last_filter->next != priv->filters.next)) + list_move(&priv->filters, &last_filter->next); + + spin_unlock_bh(&priv->filters_lock); + + list_for_each_entry_safe(filter, tmp, &del_list, next) + mlx4_en_filter_free(filter); +} +#endif + +static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, + __be16 proto, u16 vid) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int err; + int idx; + + en_dbg(HW, priv, "adding VLAN:%d\n", vid); + + set_bit(vid, priv->active_vlans); + + /* Add VID to port VLAN filter */ + mutex_lock(&mdev->state_lock); + if (mdev->device_up && priv->port_up) { + err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); + if (err) { + en_err(priv, "Failed configuring VLAN filter\n"); + goto out; + } + } + err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx); + if (err) + en_dbg(HW, priv, "Failed adding vlan %d\n", vid); + +out: + mutex_unlock(&mdev->state_lock); + return err; +} + +static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, + __be16 proto, u16 vid) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int err = 0; + + en_dbg(HW, priv, "Killing VID:%d\n", vid); + + clear_bit(vid, priv->active_vlans); + + /* Remove VID from port VLAN filter */ + mutex_lock(&mdev->state_lock); + mlx4_unregister_vlan(mdev->dev, priv->port, vid); + + if (mdev->device_up && priv->port_up) { + err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); + if (err) + en_err(priv, "Failed configuring VLAN filter\n"); + } + mutex_unlock(&mdev->state_lock); + + return err; +} + +static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) +{ + int i; + for (i = ETH_ALEN - 1; i >= 0; --i) { + dst_mac[i] = src_mac & 0xff; + src_mac >>= 8; + } + memset(&dst_mac[ETH_ALEN], 0, 2); +} + + +static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr, + int qpn, u64 *reg_id) +{ + int err; + + if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN || + priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC) + return 0; /* do nothing */ + + err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn, + MLX4_DOMAIN_NIC, reg_id); + if (err) { + en_err(priv, "failed to add vxlan steering rule, err %d\n", err); + return err; + } + en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id); + return 0; +} + + +static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv, + unsigned char *mac, int *qpn, u64 *reg_id) +{ + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_dev *dev = mdev->dev; + int err; + + switch (dev->caps.steering_mode) { + case MLX4_STEERING_MODE_B0: { + struct mlx4_qp qp; + u8 gid[16] = {0}; + + qp.qpn = *qpn; + memcpy(&gid[10], mac, ETH_ALEN); + gid[5] = priv->port; + + err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH); + break; + } + case MLX4_STEERING_MODE_DEVICE_MANAGED: { + struct mlx4_spec_list spec_eth = { {NULL} }; + __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16); + + struct mlx4_net_trans_rule rule = { + .queue_mode = MLX4_NET_TRANS_Q_FIFO, + .exclusive = 0, + .allow_loopback = 1, + .promisc_mode = MLX4_FS_REGULAR, + .priority = MLX4_DOMAIN_NIC, + }; + + rule.port = priv->port; + rule.qpn = *qpn; + INIT_LIST_HEAD(&rule.list); + + spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH; + memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN); + memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN); + list_add_tail(&spec_eth.list, &rule.list); + + err = mlx4_flow_attach(dev, &rule, reg_id); + break; + } + default: + return -EINVAL; + } + if (err) + en_warn(priv, "Failed Attaching Unicast\n"); + + return err; +} + +static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv, + unsigned char *mac, int qpn, u64 reg_id) +{ + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_dev *dev = mdev->dev; + + switch (dev->caps.steering_mode) { + case MLX4_STEERING_MODE_B0: { + struct mlx4_qp qp; + u8 gid[16] = {0}; + + qp.qpn = qpn; + memcpy(&gid[10], mac, ETH_ALEN); + gid[5] = priv->port; + + mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH); + break; + } + case MLX4_STEERING_MODE_DEVICE_MANAGED: { + mlx4_flow_detach(dev, reg_id); + break; + } + default: + en_err(priv, "Invalid steering mode.\n"); + } +} + +static int mlx4_en_get_qp(struct mlx4_en_priv *priv) +{ + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_dev *dev = mdev->dev; + int index = 0; + int err = 0; + int *qpn = &priv->base_qpn; + u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); + + en_dbg(DRV, priv, "Registering MAC: %pM for adding\n", + priv->dev->dev_addr); + index = mlx4_register_mac(dev, priv->port, mac); + if (index < 0) { + err = index; + en_err(priv, "Failed adding MAC: %pM\n", + priv->dev->dev_addr); + return err; + } + + en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode); + + if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { + int base_qpn = mlx4_get_base_qpn(dev, priv->port); + *qpn = base_qpn + index; + return 0; + } + + err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP, + MLX4_RES_USAGE_DRIVER); + en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); + if (err) { + en_err(priv, "Failed to reserve qp for mac registration\n"); + mlx4_unregister_mac(dev, priv->port, mac); + return err; + } + + return 0; +} + +static void mlx4_en_put_qp(struct mlx4_en_priv *priv) +{ + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_dev *dev = mdev->dev; + int qpn = priv->base_qpn; + + if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { + u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr); + en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", + priv->dev->dev_addr); + mlx4_unregister_mac(dev, priv->port, mac); + } else { + en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", + priv->port, qpn); + mlx4_qp_release_range(dev, qpn, 1); + priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; + } +} + +static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn, + unsigned char *new_mac, unsigned char *prev_mac) +{ + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_dev *dev = mdev->dev; + int err = 0; + u64 new_mac_u64 = mlx4_mac_to_u64(new_mac); + + if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { + struct hlist_head *bucket; + unsigned int mac_hash; + struct mlx4_mac_entry *entry; + struct hlist_node *tmp; + u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac); + + bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]]; + hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { + if (ether_addr_equal_64bits(entry->mac, prev_mac)) { + mlx4_en_uc_steer_release(priv, entry->mac, + qpn, entry->reg_id); + mlx4_unregister_mac(dev, priv->port, + prev_mac_u64); + hlist_del_rcu(&entry->hlist); + synchronize_rcu(); + memcpy(entry->mac, new_mac, ETH_ALEN); + entry->reg_id = 0; + mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX]; + hlist_add_head_rcu(&entry->hlist, + &priv->mac_hash[mac_hash]); + mlx4_register_mac(dev, priv->port, new_mac_u64); + err = mlx4_en_uc_steer_add(priv, new_mac, + &qpn, + &entry->reg_id); + if (err) + return err; + if (priv->tunnel_reg_id) { + mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); + priv->tunnel_reg_id = 0; + } + err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn, + &priv->tunnel_reg_id); + return err; + } + } + return -EINVAL; + } + + return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); +} + +static void mlx4_en_update_user_mac(struct mlx4_en_priv *priv, + unsigned char new_mac[ETH_ALEN + 2]) +{ + struct mlx4_en_dev *mdev = priv->mdev; + int err; + + if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_USER_MAC_EN)) + return; + + err = mlx4_SET_PORT_user_mac(mdev->dev, priv->port, new_mac); + if (err) + en_err(priv, "Failed to pass user MAC(%pM) to Firmware for port %d, with error %d\n", + new_mac, priv->port, err); +} + +static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv, + unsigned char new_mac[ETH_ALEN + 2]) +{ + int err = 0; + + if (priv->port_up) { + /* Remove old MAC and insert the new one */ + err = mlx4_en_replace_mac(priv, priv->base_qpn, + new_mac, priv->current_mac); + if (err) + en_err(priv, "Failed changing HW MAC address\n"); + } else + en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); + + if (!err) + memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac)); + + return err; +} + +static int mlx4_en_set_mac(struct net_device *dev, void *addr) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct sockaddr *saddr = addr; + unsigned char new_mac[ETH_ALEN + 2]; + int err; + + if (!is_valid_ether_addr(saddr->sa_data)) + return -EADDRNOTAVAIL; + + mutex_lock(&mdev->state_lock); + memcpy(new_mac, saddr->sa_data, ETH_ALEN); + err = mlx4_en_do_set_mac(priv, new_mac); + if (err) + goto out; + + memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); + mlx4_en_update_user_mac(priv, new_mac); +out: + mutex_unlock(&mdev->state_lock); + + return err; +} + +static void mlx4_en_clear_list(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_mc_list *tmp, *mc_to_del; + + list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) { + list_del(&mc_to_del->list); + kfree(mc_to_del); + } +} + +static void mlx4_en_cache_mclist(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct netdev_hw_addr *ha; + struct mlx4_en_mc_list *tmp; + + mlx4_en_clear_list(dev); + netdev_for_each_mc_addr(ha, dev) { + tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC); + if (!tmp) { + mlx4_en_clear_list(dev); + return; + } + memcpy(tmp->addr, ha->addr, ETH_ALEN); + list_add_tail(&tmp->list, &priv->mc_list); + } +} + +static void update_mclist_flags(struct mlx4_en_priv *priv, + struct list_head *dst, + struct list_head *src) +{ + struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc; + bool found; + + /* Find all the entries that should be removed from dst, + * These are the entries that are not found in src + */ + list_for_each_entry(dst_tmp, dst, list) { + found = false; + list_for_each_entry(src_tmp, src, list) { + if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { + found = true; + break; + } + } + if (!found) + dst_tmp->action = MCLIST_REM; + } + + /* Add entries that exist in src but not in dst + * mark them as need to add + */ + list_for_each_entry(src_tmp, src, list) { + found = false; + list_for_each_entry(dst_tmp, dst, list) { + if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) { + dst_tmp->action = MCLIST_NONE; + found = true; + break; + } + } + if (!found) { + new_mc = kmemdup(src_tmp, + sizeof(struct mlx4_en_mc_list), + GFP_KERNEL); + if (!new_mc) + return; + + new_mc->action = MCLIST_ADD; + list_add_tail(&new_mc->list, dst); + } + } +} + +static void mlx4_en_set_rx_mode(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + + if (!priv->port_up) + return; + + queue_work(priv->mdev->workqueue, &priv->rx_mode_task); +} + +static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv, + struct mlx4_en_dev *mdev) +{ + int err = 0; + + if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) { + if (netif_msg_rx_status(priv)) + en_warn(priv, "Entering promiscuous mode\n"); + priv->flags |= MLX4_EN_FLAG_PROMISC; + + /* Enable promiscouos mode */ + switch (mdev->dev->caps.steering_mode) { + case MLX4_STEERING_MODE_DEVICE_MANAGED: + err = mlx4_flow_steer_promisc_add(mdev->dev, + priv->port, + priv->base_qpn, + MLX4_FS_ALL_DEFAULT); + if (err) + en_err(priv, "Failed enabling promiscuous mode\n"); + priv->flags |= MLX4_EN_FLAG_MC_PROMISC; + break; + + case MLX4_STEERING_MODE_B0: + err = mlx4_unicast_promisc_add(mdev->dev, + priv->base_qpn, + priv->port); + if (err) + en_err(priv, "Failed enabling unicast promiscuous mode\n"); + + /* Add the default qp number as multicast + * promisc + */ + if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { + err = mlx4_multicast_promisc_add(mdev->dev, + priv->base_qpn, + priv->port); + if (err) + en_err(priv, "Failed enabling multicast promiscuous mode\n"); + priv->flags |= MLX4_EN_FLAG_MC_PROMISC; + } + break; + + case MLX4_STEERING_MODE_A0: + err = mlx4_SET_PORT_qpn_calc(mdev->dev, + priv->port, + priv->base_qpn, + 1); + if (err) + en_err(priv, "Failed enabling promiscuous mode\n"); + break; + } + + /* Disable port multicast filter (unconditionally) */ + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_DISABLE); + if (err) + en_err(priv, "Failed disabling multicast filter\n"); + } +} + +static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv, + struct mlx4_en_dev *mdev) +{ + int err = 0; + + if (netif_msg_rx_status(priv)) + en_warn(priv, "Leaving promiscuous mode\n"); + priv->flags &= ~MLX4_EN_FLAG_PROMISC; + + /* Disable promiscouos mode */ + switch (mdev->dev->caps.steering_mode) { + case MLX4_STEERING_MODE_DEVICE_MANAGED: + err = mlx4_flow_steer_promisc_remove(mdev->dev, + priv->port, + MLX4_FS_ALL_DEFAULT); + if (err) + en_err(priv, "Failed disabling promiscuous mode\n"); + priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; + break; + + case MLX4_STEERING_MODE_B0: + err = mlx4_unicast_promisc_remove(mdev->dev, + priv->base_qpn, + priv->port); + if (err) + en_err(priv, "Failed disabling unicast promiscuous mode\n"); + /* Disable Multicast promisc */ + if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { + err = mlx4_multicast_promisc_remove(mdev->dev, + priv->base_qpn, + priv->port); + if (err) + en_err(priv, "Failed disabling multicast promiscuous mode\n"); + priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; + } + break; + + case MLX4_STEERING_MODE_A0: + err = mlx4_SET_PORT_qpn_calc(mdev->dev, + priv->port, + priv->base_qpn, 0); + if (err) + en_err(priv, "Failed disabling promiscuous mode\n"); + break; + } +} + +static void mlx4_en_do_multicast(struct mlx4_en_priv *priv, + struct net_device *dev, + struct mlx4_en_dev *mdev) +{ + struct mlx4_en_mc_list *mclist, *tmp; + u64 mcast_addr = 0; + u8 mc_list[16] = {0}; + int err = 0; + + /* Enable/disable the multicast filter according to IFF_ALLMULTI */ + if (dev->flags & IFF_ALLMULTI) { + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_DISABLE); + if (err) + en_err(priv, "Failed disabling multicast filter\n"); + + /* Add the default qp number as multicast promisc */ + if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) { + switch (mdev->dev->caps.steering_mode) { + case MLX4_STEERING_MODE_DEVICE_MANAGED: + err = mlx4_flow_steer_promisc_add(mdev->dev, + priv->port, + priv->base_qpn, + MLX4_FS_MC_DEFAULT); + break; + + case MLX4_STEERING_MODE_B0: + err = mlx4_multicast_promisc_add(mdev->dev, + priv->base_qpn, + priv->port); + break; + + case MLX4_STEERING_MODE_A0: + break; + } + if (err) + en_err(priv, "Failed entering multicast promisc mode\n"); + priv->flags |= MLX4_EN_FLAG_MC_PROMISC; + } + } else { + /* Disable Multicast promisc */ + if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { + switch (mdev->dev->caps.steering_mode) { + case MLX4_STEERING_MODE_DEVICE_MANAGED: + err = mlx4_flow_steer_promisc_remove(mdev->dev, + priv->port, + MLX4_FS_MC_DEFAULT); + break; + + case MLX4_STEERING_MODE_B0: + err = mlx4_multicast_promisc_remove(mdev->dev, + priv->base_qpn, + priv->port); + break; + + case MLX4_STEERING_MODE_A0: + break; + } + if (err) + en_err(priv, "Failed disabling multicast promiscuous mode\n"); + priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; + } + + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_DISABLE); + if (err) + en_err(priv, "Failed disabling multicast filter\n"); + + /* Flush mcast filter and init it with broadcast address */ + mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST, + 1, MLX4_MCAST_CONFIG); + + /* Update multicast list - we cache all addresses so they won't + * change while HW is updated holding the command semaphor */ + netif_addr_lock_bh(dev); + mlx4_en_cache_mclist(dev); + netif_addr_unlock_bh(dev); + list_for_each_entry(mclist, &priv->mc_list, list) { + mcast_addr = mlx4_mac_to_u64(mclist->addr); + mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, + mcast_addr, 0, MLX4_MCAST_CONFIG); + } + err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, + 0, MLX4_MCAST_ENABLE); + if (err) + en_err(priv, "Failed enabling multicast filter\n"); + + update_mclist_flags(priv, &priv->curr_list, &priv->mc_list); + list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { + if (mclist->action == MCLIST_REM) { + /* detach this address and delete from list */ + memcpy(&mc_list[10], mclist->addr, ETH_ALEN); + mc_list[5] = priv->port; + err = mlx4_multicast_detach(mdev->dev, + priv->rss_map.indir_qp, + mc_list, + MLX4_PROT_ETH, + mclist->reg_id); + if (err) + en_err(priv, "Fail to detach multicast address\n"); + + if (mclist->tunnel_reg_id) { + err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id); + if (err) + en_err(priv, "Failed to detach multicast address\n"); + } + + /* remove from list */ + list_del(&mclist->list); + kfree(mclist); + } else if (mclist->action == MCLIST_ADD) { + /* attach the address */ + memcpy(&mc_list[10], mclist->addr, ETH_ALEN); + /* needed for B0 steering support */ + mc_list[5] = priv->port; + err = mlx4_multicast_attach(mdev->dev, + priv->rss_map.indir_qp, + mc_list, + priv->port, 0, + MLX4_PROT_ETH, + &mclist->reg_id); + if (err) + en_err(priv, "Fail to attach multicast address\n"); + + err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn, + &mclist->tunnel_reg_id); + if (err) + en_err(priv, "Failed to attach multicast address\n"); + } + } + } +} + +static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv, + struct net_device *dev, + struct mlx4_en_dev *mdev) +{ + struct netdev_hw_addr *ha; + struct mlx4_mac_entry *entry; + struct hlist_node *tmp; + bool found; + u64 mac; + int err = 0; + struct hlist_head *bucket; + unsigned int i; + int removed = 0; + u32 prev_flags; + + /* Note that we do not need to protect our mac_hash traversal with rcu, + * since all modification code is protected by mdev->state_lock + */ + + /* find what to remove */ + for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { + bucket = &priv->mac_hash[i]; + hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { + found = false; + netdev_for_each_uc_addr(ha, dev) { + if (ether_addr_equal_64bits(entry->mac, + ha->addr)) { + found = true; + break; + } + } + + /* MAC address of the port is not in uc list */ + if (ether_addr_equal_64bits(entry->mac, + priv->current_mac)) + found = true; + + if (!found) { + mac = mlx4_mac_to_u64(entry->mac); + mlx4_en_uc_steer_release(priv, entry->mac, + priv->base_qpn, + entry->reg_id); + mlx4_unregister_mac(mdev->dev, priv->port, mac); + + hlist_del_rcu(&entry->hlist); + kfree_rcu(entry, rcu); + en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n", + entry->mac, priv->port); + ++removed; + } + } + } + + /* if we didn't remove anything, there is no use in trying to add + * again once we are in a forced promisc mode state + */ + if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed) + return; + + prev_flags = priv->flags; + priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; + + /* find what to add */ + netdev_for_each_uc_addr(ha, dev) { + found = false; + bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]]; + hlist_for_each_entry(entry, bucket, hlist) { + if (ether_addr_equal_64bits(entry->mac, ha->addr)) { + found = true; + break; + } + } + + if (!found) { + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) { + en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n", + ha->addr, priv->port); + priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; + break; + } + mac = mlx4_mac_to_u64(ha->addr); + memcpy(entry->mac, ha->addr, ETH_ALEN); + err = mlx4_register_mac(mdev->dev, priv->port, mac); + if (err < 0) { + en_err(priv, "Failed registering MAC %pM on port %d: %d\n", + ha->addr, priv->port, err); + kfree(entry); + priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; + break; + } + err = mlx4_en_uc_steer_add(priv, ha->addr, + &priv->base_qpn, + &entry->reg_id); + if (err) { + en_err(priv, "Failed adding MAC %pM on port %d: %d\n", + ha->addr, priv->port, err); + mlx4_unregister_mac(mdev->dev, priv->port, mac); + kfree(entry); + priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC; + break; + } else { + unsigned int mac_hash; + en_dbg(DRV, priv, "Added MAC %pM on port:%d\n", + ha->addr, priv->port); + mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX]; + bucket = &priv->mac_hash[mac_hash]; + hlist_add_head_rcu(&entry->hlist, bucket); + } + } + } + + if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) { + en_warn(priv, "Forcing promiscuous mode on port:%d\n", + priv->port); + } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) { + en_warn(priv, "Stop forcing promiscuous mode on port:%d\n", + priv->port); + } +} + +static void mlx4_en_do_set_rx_mode(struct work_struct *work) +{ + struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, + rx_mode_task); + struct mlx4_en_dev *mdev = priv->mdev; + struct net_device *dev = priv->dev; + + mutex_lock(&mdev->state_lock); + if (!mdev->device_up) { + en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n"); + goto out; + } + if (!priv->port_up) { + en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n"); + goto out; + } + + if (!netif_carrier_ok(dev)) { + if (!mlx4_en_QUERY_PORT(mdev, priv->port)) { + if (priv->port_state.link_state) { + priv->last_link_state = MLX4_DEV_EVENT_PORT_UP; + netif_carrier_on(dev); + en_dbg(LINK, priv, "Link Up\n"); + } + } + } + + if (dev->priv_flags & IFF_UNICAST_FLT) + mlx4_en_do_uc_filter(priv, dev, mdev); + + /* Promsicuous mode: disable all filters */ + if ((dev->flags & IFF_PROMISC) || + (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) { + mlx4_en_set_promisc_mode(priv, mdev); + goto out; + } + + /* Not in promiscuous mode */ + if (priv->flags & MLX4_EN_FLAG_PROMISC) + mlx4_en_clear_promisc_mode(priv, mdev); + + mlx4_en_do_multicast(priv, dev, mdev); +out: + mutex_unlock(&mdev->state_lock); +} + +static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv) +{ + u64 reg_id; + int err = 0; + int *qpn = &priv->base_qpn; + struct mlx4_mac_entry *entry; + + err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); + if (err) + return err; + + err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn, + &priv->tunnel_reg_id); + if (err) + goto tunnel_err; + + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) { + err = -ENOMEM; + goto alloc_err; + } + + memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac)); + memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac)); + entry->reg_id = reg_id; + hlist_add_head_rcu(&entry->hlist, + &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]); + + return 0; + +alloc_err: + if (priv->tunnel_reg_id) + mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); + +tunnel_err: + mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); + return err; +} + +static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv) +{ + u64 mac; + unsigned int i; + int qpn = priv->base_qpn; + struct hlist_head *bucket; + struct hlist_node *tmp; + struct mlx4_mac_entry *entry; + + for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { + bucket = &priv->mac_hash[i]; + hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { + mac = mlx4_mac_to_u64(entry->mac); + en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n", + entry->mac); + mlx4_en_uc_steer_release(priv, entry->mac, + qpn, entry->reg_id); + + mlx4_unregister_mac(priv->mdev->dev, priv->port, mac); + hlist_del_rcu(&entry->hlist); + kfree_rcu(entry, rcu); + } + } + + if (priv->tunnel_reg_id) { + mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id); + priv->tunnel_reg_id = 0; + } +} + +static void mlx4_en_tx_timeout(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int i; + + if (netif_msg_timer(priv)) + en_warn(priv, "Tx timeout called on port:%d\n", priv->port); + + for (i = 0; i < priv->tx_ring_num[TX]; i++) { + struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][i]; + + if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i))) + continue; + en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n", + i, tx_ring->qpn, tx_ring->sp_cqn, + tx_ring->cons, tx_ring->prod); + } + + priv->port_stats.tx_timeout++; + if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state)) { + en_dbg(DRV, priv, "Scheduling port restart\n"); + queue_work(mdev->workqueue, &priv->restart_task); + } +} + + +static void +mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + + spin_lock_bh(&priv->stats_lock); + mlx4_en_fold_software_stats(dev); + netdev_stats_to_stats64(stats, &dev->stats); + spin_unlock_bh(&priv->stats_lock); +} + +static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) +{ + struct mlx4_en_cq *cq; + int i, t; + + /* If we haven't received a specific coalescing setting + * (module param), we set the moderation parameters as follows: + * - moder_cnt is set to the number of mtu sized packets to + * satisfy our coalescing target. + * - moder_time is set to a fixed value. + */ + priv->rx_frames = MLX4_EN_RX_COAL_TARGET; + priv->rx_usecs = MLX4_EN_RX_COAL_TIME; + priv->tx_frames = MLX4_EN_TX_COAL_PKTS; + priv->tx_usecs = MLX4_EN_TX_COAL_TIME; + en_dbg(INTR, priv, "Default coalescing params for mtu:%d - rx_frames:%d rx_usecs:%d\n", + priv->dev->mtu, priv->rx_frames, priv->rx_usecs); + + /* Setup cq moderation params */ + for (i = 0; i < priv->rx_ring_num; i++) { + cq = priv->rx_cq[i]; + cq->moder_cnt = priv->rx_frames; + cq->moder_time = priv->rx_usecs; + priv->last_moder_time[i] = MLX4_EN_AUTO_CONF; + priv->last_moder_packets[i] = 0; + priv->last_moder_bytes[i] = 0; + } + + for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) { + for (i = 0; i < priv->tx_ring_num[t]; i++) { + cq = priv->tx_cq[t][i]; + cq->moder_cnt = priv->tx_frames; + cq->moder_time = priv->tx_usecs; + } + } + + /* Reset auto-moderation params */ + priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW; + priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW; + priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH; + priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH; + priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL; + priv->adaptive_rx_coal = 1; + priv->last_moder_jiffies = 0; + priv->last_moder_tx_packets = 0; +} + +static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv) +{ + unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies); + u32 pkt_rate_high, pkt_rate_low; + struct mlx4_en_cq *cq; + unsigned long packets; + unsigned long rate; + unsigned long avg_pkt_size; + unsigned long rx_packets; + unsigned long rx_bytes; + unsigned long rx_pkt_diff; + int moder_time; + int ring, err; + + if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ) + return; + + pkt_rate_low = READ_ONCE(priv->pkt_rate_low); + pkt_rate_high = READ_ONCE(priv->pkt_rate_high); + + for (ring = 0; ring < priv->rx_ring_num; ring++) { + rx_packets = READ_ONCE(priv->rx_ring[ring]->packets); + rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes); + + rx_pkt_diff = rx_packets - priv->last_moder_packets[ring]; + packets = rx_pkt_diff; + rate = packets * HZ / period; + avg_pkt_size = packets ? (rx_bytes - + priv->last_moder_bytes[ring]) / packets : 0; + + /* Apply auto-moderation only when packet rate + * exceeds a rate that it matters */ + if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) && + avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) { + if (rate <= pkt_rate_low) + moder_time = priv->rx_usecs_low; + else if (rate >= pkt_rate_high) + moder_time = priv->rx_usecs_high; + else + moder_time = (rate - pkt_rate_low) * + (priv->rx_usecs_high - priv->rx_usecs_low) / + (pkt_rate_high - pkt_rate_low) + + priv->rx_usecs_low; + } else { + moder_time = priv->rx_usecs_low; + } + + cq = priv->rx_cq[ring]; + if (moder_time != priv->last_moder_time[ring] || + cq->moder_cnt != priv->rx_frames) { + priv->last_moder_time[ring] = moder_time; + cq->moder_time = moder_time; + cq->moder_cnt = priv->rx_frames; + err = mlx4_en_set_cq_moder(priv, cq); + if (err) + en_err(priv, "Failed modifying moderation for cq:%d\n", + ring); + } + priv->last_moder_packets[ring] = rx_packets; + priv->last_moder_bytes[ring] = rx_bytes; + } + + priv->last_moder_jiffies = jiffies; +} + +static void mlx4_en_do_get_stats(struct work_struct *work) +{ + struct delayed_work *delay = to_delayed_work(work); + struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, + stats_task); + struct mlx4_en_dev *mdev = priv->mdev; + int err; + + mutex_lock(&mdev->state_lock); + if (mdev->device_up) { + if (priv->port_up) { + err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); + if (err) + en_dbg(HW, priv, "Could not update stats\n"); + + mlx4_en_auto_moderation(priv); + } + + queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); + } + if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { + mlx4_en_do_set_mac(priv, priv->current_mac); + mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; + } + mutex_unlock(&mdev->state_lock); +} + +/* mlx4_en_service_task - Run service task for tasks that needed to be done + * periodically + */ +static void mlx4_en_service_task(struct work_struct *work) +{ + struct delayed_work *delay = to_delayed_work(work); + struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv, + service_task); + struct mlx4_en_dev *mdev = priv->mdev; + + mutex_lock(&mdev->state_lock); + if (mdev->device_up) { + if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) + mlx4_en_ptp_overflow_check(mdev); + + mlx4_en_recover_from_oom(priv); + queue_delayed_work(mdev->workqueue, &priv->service_task, + SERVICE_TASK_DELAY); + } + mutex_unlock(&mdev->state_lock); +} + +static void mlx4_en_linkstate(struct work_struct *work) +{ + struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, + linkstate_task); + struct mlx4_en_dev *mdev = priv->mdev; + int linkstate = priv->link_state; + + mutex_lock(&mdev->state_lock); + /* If observable port state changed set carrier state and + * report to system log */ + if (priv->last_link_state != linkstate) { + if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) { + en_info(priv, "Link Down\n"); + netif_carrier_off(priv->dev); + } else { + en_info(priv, "Link Up\n"); + netif_carrier_on(priv->dev); + } + } + priv->last_link_state = linkstate; + mutex_unlock(&mdev->state_lock); +} + +static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) +{ + struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx]; + int numa_node = priv->mdev->dev->numa_node; + + if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL)) + return -ENOMEM; + + cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node), + ring->affinity_mask); + return 0; +} + +static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx) +{ + free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask); +} + +static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv, + int tx_ring_idx) +{ + struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx]; + int rr_index = tx_ring_idx; + + tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc; + tx_ring->recycle_ring = priv->rx_ring[rr_index]; + en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n", + TX_XDP, tx_ring_idx, rr_index); +} + +int mlx4_en_start_port(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_en_cq *cq; + struct mlx4_en_tx_ring *tx_ring; + int rx_index = 0; + int err = 0; + int i, t; + int j; + u8 mc_list[16] = {0}; + + if (priv->port_up) { + en_dbg(DRV, priv, "start port called while port already up\n"); + return 0; + } + + INIT_LIST_HEAD(&priv->mc_list); + INIT_LIST_HEAD(&priv->curr_list); + INIT_LIST_HEAD(&priv->ethtool_list); + memset(&priv->ethtool_rules[0], 0, + sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES); + + /* Calculate Rx buf size */ + dev->mtu = min(dev->mtu, priv->max_mtu); + mlx4_en_calc_rx_buf(dev); + en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size); + + /* Configure rx cq's and rings */ + err = mlx4_en_activate_rx_rings(priv); + if (err) { + en_err(priv, "Failed to activate RX rings\n"); + return err; + } + for (i = 0; i < priv->rx_ring_num; i++) { + cq = priv->rx_cq[i]; + + err = mlx4_en_init_affinity_hint(priv, i); + if (err) { + en_err(priv, "Failed preparing IRQ affinity hint\n"); + goto cq_err; + } + + err = mlx4_en_activate_cq(priv, cq, i); + if (err) { + en_err(priv, "Failed activating Rx CQ\n"); + mlx4_en_free_affinity_hint(priv, i); + goto cq_err; + } + + for (j = 0; j < cq->size; j++) { + struct mlx4_cqe *cqe = NULL; + + cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) + + priv->cqe_factor; + cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK; + } + + err = mlx4_en_set_cq_moder(priv, cq); + if (err) { + en_err(priv, "Failed setting cq moderation parameters\n"); + mlx4_en_deactivate_cq(priv, cq); + mlx4_en_free_affinity_hint(priv, i); + goto cq_err; + } + mlx4_en_arm_cq(priv, cq); + priv->rx_ring[i]->cqn = cq->mcq.cqn; + ++rx_index; + } + + /* Set qp number */ + en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port); + err = mlx4_en_get_qp(priv); + if (err) { + en_err(priv, "Failed getting eth qp\n"); + goto cq_err; + } + mdev->mac_removed[priv->port] = 0; + + priv->counter_index = + mlx4_get_default_counter_index(mdev->dev, priv->port); + + err = mlx4_en_config_rss_steer(priv); + if (err) { + en_err(priv, "Failed configuring rss steering\n"); + goto mac_err; + } + + err = mlx4_en_create_drop_qp(priv); + if (err) + goto rss_err; + + /* Configure tx cq's and rings */ + for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) { + u8 num_tx_rings_p_up = t == TX ? + priv->num_tx_rings_p_up : priv->tx_ring_num[t]; + + for (i = 0; i < priv->tx_ring_num[t]; i++) { + /* Configure cq */ + cq = priv->tx_cq[t][i]; + err = mlx4_en_activate_cq(priv, cq, i); + if (err) { + en_err(priv, "Failed allocating Tx CQ\n"); + goto tx_err; + } + err = mlx4_en_set_cq_moder(priv, cq); + if (err) { + en_err(priv, "Failed setting cq moderation parameters\n"); + mlx4_en_deactivate_cq(priv, cq); + goto tx_err; + } + en_dbg(DRV, priv, + "Resetting index of collapsed CQ:%d to -1\n", i); + cq->buf->wqe_index = cpu_to_be16(0xffff); + + /* Configure ring */ + tx_ring = priv->tx_ring[t][i]; + err = mlx4_en_activate_tx_ring(priv, tx_ring, + cq->mcq.cqn, + i / num_tx_rings_p_up); + if (err) { + en_err(priv, "Failed allocating Tx ring\n"); + mlx4_en_deactivate_cq(priv, cq); + goto tx_err; + } + clear_bit(MLX4_EN_TX_RING_STATE_RECOVERING, &tx_ring->state); + if (t != TX_XDP) { + tx_ring->tx_queue = netdev_get_tx_queue(dev, i); + tx_ring->recycle_ring = NULL; + + /* Arm CQ for TX completions */ + mlx4_en_arm_cq(priv, cq); + + } else { + mlx4_en_init_tx_xdp_ring_descs(priv, tx_ring); + mlx4_en_init_recycle_ring(priv, i); + /* XDP TX CQ should never be armed */ + } + + /* Set initial ownership of all Tx TXBBs to SW (1) */ + for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE) + *((u32 *)(tx_ring->buf + j)) = 0xffffffff; + } + } + + /* Configure port */ + err = mlx4_SET_PORT_general(mdev->dev, priv->port, + priv->rx_skb_size + ETH_FCS_LEN, + priv->prof->tx_pause, + priv->prof->tx_ppp, + priv->prof->rx_pause, + priv->prof->rx_ppp); + if (err) { + en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", + priv->port, err); + goto tx_err; + } + + err = mlx4_SET_PORT_user_mtu(mdev->dev, priv->port, dev->mtu); + if (err) { + en_err(priv, "Failed to pass user MTU(%d) to Firmware for port %d, with error %d\n", + dev->mtu, priv->port, err); + goto tx_err; + } + + /* Set default qp number */ + err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0); + if (err) { + en_err(priv, "Failed setting default qp numbers\n"); + goto tx_err; + } + + if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { + err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); + if (err) { + en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", + err); + goto tx_err; + } + } + + /* Init port */ + en_dbg(HW, priv, "Initializing port\n"); + err = mlx4_INIT_PORT(mdev->dev, priv->port); + if (err) { + en_err(priv, "Failed Initializing port\n"); + goto tx_err; + } + + /* Set Unicast and VXLAN steering rules */ + if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 && + mlx4_en_set_rss_steer_rules(priv)) + mlx4_warn(mdev, "Failed setting steering rules\n"); + + /* Attach rx QP to bradcast address */ + eth_broadcast_addr(&mc_list[10]); + mc_list[5] = priv->port; /* needed for B0 steering support */ + if (mlx4_multicast_attach(mdev->dev, priv->rss_map.indir_qp, mc_list, + priv->port, 0, MLX4_PROT_ETH, + &priv->broadcast_id)) + mlx4_warn(mdev, "Failed Attaching Broadcast\n"); + + /* Must redo promiscuous mode setup. */ + priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC); + + /* Schedule multicast task to populate multicast list */ + queue_work(mdev->workqueue, &priv->rx_mode_task); + + if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) + udp_tunnel_get_rx_info(dev); + + priv->port_up = true; + + /* Process all completions if exist to prevent + * the queues freezing if they are full + */ + for (i = 0; i < priv->rx_ring_num; i++) { + local_bh_disable(); + napi_schedule(&priv->rx_cq[i]->napi); + local_bh_enable(); + } + + clear_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state); + netif_tx_start_all_queues(dev); + netif_device_attach(dev); + + return 0; + +tx_err: + if (t == MLX4_EN_NUM_TX_TYPES) { + t--; + i = priv->tx_ring_num[t]; + } + while (t >= 0) { + while (i--) { + mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]); + mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]); + } + if (!t--) + break; + i = priv->tx_ring_num[t]; + } + mlx4_en_destroy_drop_qp(priv); +rss_err: + mlx4_en_release_rss_steer(priv); +mac_err: + mlx4_en_put_qp(priv); +cq_err: + while (rx_index--) { + mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]); + mlx4_en_free_affinity_hint(priv, rx_index); + } + for (i = 0; i < priv->rx_ring_num; i++) + mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); + + return err; /* need to close devices */ +} + + +void mlx4_en_stop_port(struct net_device *dev, int detach) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_en_mc_list *mclist, *tmp; + struct ethtool_flow_id *flow, *tmp_flow; + int i, t; + u8 mc_list[16] = {0}; + + if (!priv->port_up) { + en_dbg(DRV, priv, "stop port called while port already down\n"); + return; + } + + /* close port*/ + mlx4_CLOSE_PORT(mdev->dev, priv->port); + + /* Synchronize with tx routine */ + netif_tx_lock_bh(dev); + if (detach) + netif_device_detach(dev); + netif_tx_stop_all_queues(dev); + netif_tx_unlock_bh(dev); + + netif_tx_disable(dev); + + spin_lock_bh(&priv->stats_lock); + mlx4_en_fold_software_stats(dev); + /* Set port as not active */ + priv->port_up = false; + spin_unlock_bh(&priv->stats_lock); + + priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); + + /* Promsicuous mode */ + if (mdev->dev->caps.steering_mode == + MLX4_STEERING_MODE_DEVICE_MANAGED) { + priv->flags &= ~(MLX4_EN_FLAG_PROMISC | + MLX4_EN_FLAG_MC_PROMISC); + mlx4_flow_steer_promisc_remove(mdev->dev, + priv->port, + MLX4_FS_ALL_DEFAULT); + mlx4_flow_steer_promisc_remove(mdev->dev, + priv->port, + MLX4_FS_MC_DEFAULT); + } else if (priv->flags & MLX4_EN_FLAG_PROMISC) { + priv->flags &= ~MLX4_EN_FLAG_PROMISC; + + /* Disable promiscouos mode */ + mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn, + priv->port); + + /* Disable Multicast promisc */ + if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) { + mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn, + priv->port); + priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC; + } + } + + /* Detach All multicasts */ + eth_broadcast_addr(&mc_list[10]); + mc_list[5] = priv->port; /* needed for B0 steering support */ + mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, mc_list, + MLX4_PROT_ETH, priv->broadcast_id); + list_for_each_entry(mclist, &priv->curr_list, list) { + memcpy(&mc_list[10], mclist->addr, ETH_ALEN); + mc_list[5] = priv->port; + mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, + mc_list, MLX4_PROT_ETH, mclist->reg_id); + if (mclist->tunnel_reg_id) + mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id); + } + mlx4_en_clear_list(dev); + list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) { + list_del(&mclist->list); + kfree(mclist); + } + + /* Flush multicast filter */ + mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); + + /* Remove flow steering rules for the port*/ + if (mdev->dev->caps.steering_mode == + MLX4_STEERING_MODE_DEVICE_MANAGED) { + ASSERT_RTNL(); + list_for_each_entry_safe(flow, tmp_flow, + &priv->ethtool_list, list) { + mlx4_flow_detach(mdev->dev, flow->id); + list_del(&flow->list); + } + } + + mlx4_en_destroy_drop_qp(priv); + + /* Free TX Rings */ + for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { + for (i = 0; i < priv->tx_ring_num[t]; i++) { + mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]); + mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]); + } + } + msleep(10); + + for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) + for (i = 0; i < priv->tx_ring_num[t]; i++) + mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]); + + if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) + mlx4_en_delete_rss_steer_rules(priv); + + /* Free RSS qps */ + mlx4_en_release_rss_steer(priv); + + /* Unregister Mac address for the port */ + mlx4_en_put_qp(priv); + if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN)) + mdev->mac_removed[priv->port] = 1; + + /* Free RX Rings */ + for (i = 0; i < priv->rx_ring_num; i++) { + struct mlx4_en_cq *cq = priv->rx_cq[i]; + + napi_synchronize(&cq->napi); + mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]); + mlx4_en_deactivate_cq(priv, cq); + + mlx4_en_free_affinity_hint(priv, i); + } +} + +static void mlx4_en_restart(struct work_struct *work) +{ + struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, + restart_task); + struct mlx4_en_dev *mdev = priv->mdev; + struct net_device *dev = priv->dev; + + en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port); + + rtnl_lock(); + mutex_lock(&mdev->state_lock); + if (priv->port_up) { + mlx4_en_stop_port(dev, 1); + if (mlx4_en_start_port(dev)) + en_err(priv, "Failed restarting port %d\n", priv->port); + } + mutex_unlock(&mdev->state_lock); + rtnl_unlock(); +} + +static void mlx4_en_clear_stats(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_en_tx_ring **tx_ring; + int i; + + if (!mlx4_is_slave(mdev->dev)) + if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) + en_dbg(HW, priv, "Failed dumping statistics\n"); + + memset(&priv->pstats, 0, sizeof(priv->pstats)); + memset(&priv->pkstats, 0, sizeof(priv->pkstats)); + memset(&priv->port_stats, 0, sizeof(priv->port_stats)); + memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats)); + memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats)); + memset(&priv->rx_priority_flowstats, 0, + sizeof(priv->rx_priority_flowstats)); + memset(&priv->tx_priority_flowstats, 0, + sizeof(priv->tx_priority_flowstats)); + memset(&priv->pf_stats, 0, sizeof(priv->pf_stats)); + + tx_ring = priv->tx_ring[TX]; + for (i = 0; i < priv->tx_ring_num[TX]; i++) { + tx_ring[i]->bytes = 0; + tx_ring[i]->packets = 0; + tx_ring[i]->tx_csum = 0; + tx_ring[i]->tx_dropped = 0; + tx_ring[i]->queue_stopped = 0; + tx_ring[i]->wake_queue = 0; + tx_ring[i]->tso_packets = 0; + tx_ring[i]->xmit_more = 0; + } + for (i = 0; i < priv->rx_ring_num; i++) { + priv->rx_ring[i]->bytes = 0; + priv->rx_ring[i]->packets = 0; + priv->rx_ring[i]->csum_ok = 0; + priv->rx_ring[i]->csum_none = 0; + priv->rx_ring[i]->csum_complete = 0; + } +} + +static int mlx4_en_open(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int err = 0; + + mutex_lock(&mdev->state_lock); + + if (!mdev->device_up) { + en_err(priv, "Cannot open - device down/disabled\n"); + err = -EBUSY; + goto out; + } + + /* Reset HW statistics and SW counters */ + mlx4_en_clear_stats(dev); + + err = mlx4_en_start_port(dev); + if (err) + en_err(priv, "Failed starting port:%d\n", priv->port); + +out: + mutex_unlock(&mdev->state_lock); + return err; +} + + +static int mlx4_en_close(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + + en_dbg(IFDOWN, priv, "Close port called\n"); + + mutex_lock(&mdev->state_lock); + + mlx4_en_stop_port(dev, 0); + netif_carrier_off(dev); + + mutex_unlock(&mdev->state_lock); + return 0; +} + +static void mlx4_en_free_resources(struct mlx4_en_priv *priv) +{ + int i, t; + +#ifdef CONFIG_RFS_ACCEL + priv->dev->rx_cpu_rmap = NULL; +#endif + + for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { + for (i = 0; i < priv->tx_ring_num[t]; i++) { + if (priv->tx_ring[t] && priv->tx_ring[t][i]) + mlx4_en_destroy_tx_ring(priv, + &priv->tx_ring[t][i]); + if (priv->tx_cq[t] && priv->tx_cq[t][i]) + mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]); + } + kfree(priv->tx_ring[t]); + kfree(priv->tx_cq[t]); + } + + for (i = 0; i < priv->rx_ring_num; i++) { + if (priv->rx_ring[i]) + mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], + priv->prof->rx_ring_size, priv->stride); + if (priv->rx_cq[i]) + mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); + } + +} + +static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) +{ + struct mlx4_en_port_profile *prof = priv->prof; + int i, t; + int node; + + /* Create tx Rings */ + for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { + for (i = 0; i < priv->tx_ring_num[t]; i++) { + node = cpu_to_node(i % num_online_cpus()); + if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i], + prof->tx_ring_size, i, t, node)) + goto err; + + if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i], + prof->tx_ring_size, + TXBB_SIZE, node, i)) + goto err; + } + } + + /* Create rx Rings */ + for (i = 0; i < priv->rx_ring_num; i++) { + node = cpu_to_node(i % num_online_cpus()); + if (mlx4_en_create_cq(priv, &priv->rx_cq[i], + prof->rx_ring_size, i, RX, node)) + goto err; + + if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], + prof->rx_ring_size, priv->stride, + node, i)) + goto err; + + } + +#ifdef CONFIG_RFS_ACCEL + priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port); +#endif + + return 0; + +err: + en_err(priv, "Failed to allocate NIC resources\n"); + for (i = 0; i < priv->rx_ring_num; i++) { + if (priv->rx_ring[i]) + mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], + prof->rx_ring_size, + priv->stride); + if (priv->rx_cq[i]) + mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); + } + for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { + for (i = 0; i < priv->tx_ring_num[t]; i++) { + if (priv->tx_ring[t][i]) + mlx4_en_destroy_tx_ring(priv, + &priv->tx_ring[t][i]); + if (priv->tx_cq[t][i]) + mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]); + } + } + return -ENOMEM; +} + + +static int mlx4_en_copy_priv(struct mlx4_en_priv *dst, + struct mlx4_en_priv *src, + struct mlx4_en_port_profile *prof) +{ + int t; + + memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config, + sizeof(dst->hwtstamp_config)); + dst->num_tx_rings_p_up = prof->num_tx_rings_p_up; + dst->rx_ring_num = prof->rx_ring_num; + dst->flags = prof->flags; + dst->mdev = src->mdev; + dst->port = src->port; + dst->dev = src->dev; + dst->prof = prof; + dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + + DS_SIZE * MLX4_EN_MAX_RX_FRAGS); + + for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { + dst->tx_ring_num[t] = prof->tx_ring_num[t]; + if (!dst->tx_ring_num[t]) + continue; + + dst->tx_ring[t] = kcalloc(MAX_TX_RINGS, + sizeof(struct mlx4_en_tx_ring *), + GFP_KERNEL); + if (!dst->tx_ring[t]) + goto err_free_tx; + + dst->tx_cq[t] = kcalloc(MAX_TX_RINGS, + sizeof(struct mlx4_en_cq *), + GFP_KERNEL); + if (!dst->tx_cq[t]) { + kfree(dst->tx_ring[t]); + goto err_free_tx; + } + } + + return 0; + +err_free_tx: + while (t--) { + kfree(dst->tx_ring[t]); + kfree(dst->tx_cq[t]); + } + return -ENOMEM; +} + +static void mlx4_en_update_priv(struct mlx4_en_priv *dst, + struct mlx4_en_priv *src) +{ + int t; + memcpy(dst->rx_ring, src->rx_ring, + sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num); + memcpy(dst->rx_cq, src->rx_cq, + sizeof(struct mlx4_en_cq *) * src->rx_ring_num); + memcpy(&dst->hwtstamp_config, &src->hwtstamp_config, + sizeof(dst->hwtstamp_config)); + for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { + dst->tx_ring_num[t] = src->tx_ring_num[t]; + dst->tx_ring[t] = src->tx_ring[t]; + dst->tx_cq[t] = src->tx_cq[t]; + } + dst->num_tx_rings_p_up = src->num_tx_rings_p_up; + dst->rx_ring_num = src->rx_ring_num; + memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile)); +} + +int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv, + struct mlx4_en_priv *tmp, + struct mlx4_en_port_profile *prof, + bool carry_xdp_prog) +{ + struct bpf_prog *xdp_prog; + int i, t, ret; + + ret = mlx4_en_copy_priv(tmp, priv, prof); + if (ret) { + en_warn(priv, "%s: mlx4_en_copy_priv() failed, return\n", + __func__); + return ret; + } + + if (mlx4_en_alloc_resources(tmp)) { + en_warn(priv, + "%s: Resource allocation failed, using previous configuration\n", + __func__); + for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { + kfree(tmp->tx_ring[t]); + kfree(tmp->tx_cq[t]); + } + return -ENOMEM; + } + + /* All rx_rings has the same xdp_prog. Pick the first one. */ + xdp_prog = rcu_dereference_protected( + priv->rx_ring[0]->xdp_prog, + lockdep_is_held(&priv->mdev->state_lock)); + + if (xdp_prog && carry_xdp_prog) { + xdp_prog = bpf_prog_add(xdp_prog, tmp->rx_ring_num); + if (IS_ERR(xdp_prog)) { + mlx4_en_free_resources(tmp); + return PTR_ERR(xdp_prog); + } + for (i = 0; i < tmp->rx_ring_num; i++) + rcu_assign_pointer(tmp->rx_ring[i]->xdp_prog, + xdp_prog); + } + + return 0; +} + +void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv, + struct mlx4_en_priv *tmp) +{ + mlx4_en_free_resources(priv); + mlx4_en_update_priv(priv, tmp); +} + +void mlx4_en_destroy_netdev(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + + en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port); + + /* Unregister device - this will close the port if it was up */ + if (priv->registered) { + devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev, + priv->port)); + unregister_netdev(dev); + } + + if (priv->allocated) + mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE); + + cancel_delayed_work(&priv->stats_task); + cancel_delayed_work(&priv->service_task); + /* flush any pending task for this netdev */ + flush_workqueue(mdev->workqueue); + + if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) + mlx4_en_remove_timestamp(mdev); + + /* Detach the netdev so tasks would not attempt to access it */ + mutex_lock(&mdev->state_lock); + mdev->pndev[priv->port] = NULL; + mdev->upper[priv->port] = NULL; + +#ifdef CONFIG_RFS_ACCEL + mlx4_en_cleanup_filters(priv); +#endif + + mlx4_en_free_resources(priv); + mutex_unlock(&mdev->state_lock); + + free_netdev(dev); +} + +static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + + if (mtu > MLX4_EN_MAX_XDP_MTU) { + en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n", + mtu, MLX4_EN_MAX_XDP_MTU); + return false; + } + + return true; +} + +static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + int err = 0; + + en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n", + dev->mtu, new_mtu); + + if (priv->tx_ring_num[TX_XDP] && + !mlx4_en_check_xdp_mtu(dev, new_mtu)) + return -EOPNOTSUPP; + + dev->mtu = new_mtu; + + if (netif_running(dev)) { + mutex_lock(&mdev->state_lock); + if (!mdev->device_up) { + /* NIC is probably restarting - let restart task reset + * the port */ + en_dbg(DRV, priv, "Change MTU called with card down!?\n"); + } else { + mlx4_en_stop_port(dev, 1); + err = mlx4_en_start_port(dev); + if (err) { + en_err(priv, "Failed restarting port:%d\n", + priv->port); + if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, + &priv->state)) + queue_work(mdev->workqueue, &priv->restart_task); + } + } + mutex_unlock(&mdev->state_lock); + } + return 0; +} + +static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct hwtstamp_config config; + + if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) + return -EFAULT; + + /* reserved for future extensions */ + if (config.flags) + return -EINVAL; + + /* device doesn't support time stamping */ + if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)) + return -EINVAL; + + /* TX HW timestamp */ + switch (config.tx_type) { + case HWTSTAMP_TX_OFF: + case HWTSTAMP_TX_ON: + break; + default: + return -ERANGE; + } + + /* RX HW timestamp */ + switch (config.rx_filter) { + case HWTSTAMP_FILTER_NONE: + break; + case HWTSTAMP_FILTER_ALL: + case HWTSTAMP_FILTER_SOME: + case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: + case HWTSTAMP_FILTER_NTP_ALL: + config.rx_filter = HWTSTAMP_FILTER_ALL; + break; + default: + return -ERANGE; + } + + if (mlx4_en_reset_config(dev, config, dev->features)) { + config.tx_type = HWTSTAMP_TX_OFF; + config.rx_filter = HWTSTAMP_FILTER_NONE; + } + + return copy_to_user(ifr->ifr_data, &config, + sizeof(config)) ? -EFAULT : 0; +} + +static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + + return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config, + sizeof(priv->hwtstamp_config)) ? -EFAULT : 0; +} + +static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +{ + switch (cmd) { + case SIOCSHWTSTAMP: + return mlx4_en_hwtstamp_set(dev, ifr); + case SIOCGHWTSTAMP: + return mlx4_en_hwtstamp_get(dev, ifr); + default: + return -EOPNOTSUPP; + } +} + +static netdev_features_t mlx4_en_fix_features(struct net_device *netdev, + netdev_features_t features) +{ + struct mlx4_en_priv *en_priv = netdev_priv(netdev); + struct mlx4_en_dev *mdev = en_priv->mdev; + + /* Since there is no support for separate RX C-TAG/S-TAG vlan accel + * enable/disable make sure S-TAG flag is always in same state as + * C-TAG. + */ + if (features & NETIF_F_HW_VLAN_CTAG_RX && + !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) + features |= NETIF_F_HW_VLAN_STAG_RX; + else + features &= ~NETIF_F_HW_VLAN_STAG_RX; + + return features; +} + +static int mlx4_en_set_features(struct net_device *netdev, + netdev_features_t features) +{ + struct mlx4_en_priv *priv = netdev_priv(netdev); + bool reset = false; + int ret = 0; + + if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) { + en_info(priv, "Turn %s RX-FCS\n", + (features & NETIF_F_RXFCS) ? "ON" : "OFF"); + reset = true; + } + + if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) { + u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0; + + en_info(priv, "Turn %s RX-ALL\n", + ignore_fcs_value ? "ON" : "OFF"); + ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev, + priv->port, ignore_fcs_value); + if (ret) + return ret; + } + + if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) { + en_info(priv, "Turn %s RX vlan strip offload\n", + (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF"); + reset = true; + } + + if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX)) + en_info(priv, "Turn %s TX vlan strip offload\n", + (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF"); + + if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX)) + en_info(priv, "Turn %s TX S-VLAN strip offload\n", + (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF"); + + if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) { + en_info(priv, "Turn %s loopback\n", + (features & NETIF_F_LOOPBACK) ? "ON" : "OFF"); + mlx4_en_update_loopback_state(netdev, features); + } + + if (reset) { + ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config, + features); + if (ret) + return ret; + } + + return 0; +} + +static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac) +{ + struct mlx4_en_priv *en_priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = en_priv->mdev; + + return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac); +} + +static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos, + __be16 vlan_proto) +{ + struct mlx4_en_priv *en_priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = en_priv->mdev; + + return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos, + vlan_proto); +} + +static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, + int max_tx_rate) +{ + struct mlx4_en_priv *en_priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = en_priv->mdev; + + return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate, + max_tx_rate); +} + +static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting) +{ + struct mlx4_en_priv *en_priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = en_priv->mdev; + + return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting); +} + +static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf) +{ + struct mlx4_en_priv *en_priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = en_priv->mdev; + + return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf); +} + +static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state) +{ + struct mlx4_en_priv *en_priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = en_priv->mdev; + + return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state); +} + +static int mlx4_en_get_vf_stats(struct net_device *dev, int vf, + struct ifla_vf_stats *vf_stats) +{ + struct mlx4_en_priv *en_priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = en_priv->mdev; + + return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats); +} + +#define PORT_ID_BYTE_LEN 8 +static int mlx4_en_get_phys_port_id(struct net_device *dev, + struct netdev_phys_item_id *ppid) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_dev *mdev = priv->mdev->dev; + int i; + u64 phys_port_id = mdev->caps.phys_port_id[priv->port]; + + if (!phys_port_id) + return -EOPNOTSUPP; + + ppid->id_len = sizeof(phys_port_id); + for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) { + ppid->id[i] = phys_port_id & 0xff; + phys_port_id >>= 8; + } + return 0; +} + +static void mlx4_en_add_vxlan_offloads(struct work_struct *work) +{ + int ret; + struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, + vxlan_add_task); + + ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port); + if (ret) + goto out; + + ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, + VXLAN_STEER_BY_OUTER_MAC, 1); +out: + if (ret) { + en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); + return; + } + + /* set offloads */ + priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_RXCSUM | + NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_GSO_UDP_TUNNEL_CSUM | + NETIF_F_GSO_PARTIAL; +} + +static void mlx4_en_del_vxlan_offloads(struct work_struct *work) +{ + int ret; + struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, + vxlan_del_task); + /* unset offloads */ + priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_RXCSUM | + NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_GSO_UDP_TUNNEL_CSUM | + NETIF_F_GSO_PARTIAL); + + ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port, + VXLAN_STEER_BY_OUTER_MAC, 0); + if (ret) + en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret); + + priv->vxlan_port = 0; +} + +static void mlx4_en_add_vxlan_port(struct net_device *dev, + struct udp_tunnel_info *ti) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + __be16 port = ti->port; + __be16 current_port; + + if (ti->type != UDP_TUNNEL_TYPE_VXLAN) + return; + + if (ti->sa_family != AF_INET) + return; + + if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) + return; + + current_port = priv->vxlan_port; + if (current_port && current_port != port) { + en_warn(priv, "vxlan port %d configured, can't add port %d\n", + ntohs(current_port), ntohs(port)); + return; + } + + priv->vxlan_port = port; + queue_work(priv->mdev->workqueue, &priv->vxlan_add_task); +} + +static void mlx4_en_del_vxlan_port(struct net_device *dev, + struct udp_tunnel_info *ti) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + __be16 port = ti->port; + __be16 current_port; + + if (ti->type != UDP_TUNNEL_TYPE_VXLAN) + return; + + if (ti->sa_family != AF_INET) + return; + + if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) + return; + + current_port = priv->vxlan_port; + if (current_port != port) { + en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port)); + return; + } + + queue_work(priv->mdev->workqueue, &priv->vxlan_del_task); +} + +static netdev_features_t mlx4_en_features_check(struct sk_buff *skb, + struct net_device *dev, + netdev_features_t features) +{ + features = vlan_features_check(skb, features); + features = vxlan_features_check(skb, features); + + /* The ConnectX-3 doesn't support outer IPv6 checksums but it does + * support inner IPv6 checksums and segmentation so we need to + * strip that feature if this is an IPv6 encapsulated frame. + */ + if (skb->encapsulation && + (skb->ip_summed == CHECKSUM_PARTIAL)) { + struct mlx4_en_priv *priv = netdev_priv(dev); + + if (!priv->vxlan_port || + (ip_hdr(skb)->version != 4) || + (udp_hdr(skb)->dest != priv->vxlan_port)) + features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); + } + + return features; +} + +static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index]; + struct mlx4_update_qp_params params; + int err; + + if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT)) + return -EOPNOTSUPP; + + /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */ + if (maxrate >> 12) { + params.rate_unit = MLX4_QP_RATE_LIMIT_GBS; + params.rate_val = maxrate / 1000; + } else if (maxrate) { + params.rate_unit = MLX4_QP_RATE_LIMIT_MBS; + params.rate_val = maxrate; + } else { /* zero serves to revoke the QP rate-limitation */ + params.rate_unit = 0; + params.rate_val = 0; + } + + err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT, + ¶ms); + return err; +} + +static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_en_port_profile new_prof; + struct bpf_prog *old_prog; + struct mlx4_en_priv *tmp; + int tx_changed = 0; + int xdp_ring_num; + int port_up = 0; + int err; + int i; + + xdp_ring_num = prog ? priv->rx_ring_num : 0; + + /* No need to reconfigure buffers when simply swapping the + * program for a new one. + */ + if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) { + if (prog) { + prog = bpf_prog_add(prog, priv->rx_ring_num - 1); + if (IS_ERR(prog)) + return PTR_ERR(prog); + } + mutex_lock(&mdev->state_lock); + for (i = 0; i < priv->rx_ring_num; i++) { + old_prog = rcu_dereference_protected( + priv->rx_ring[i]->xdp_prog, + lockdep_is_held(&mdev->state_lock)); + rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog); + if (old_prog) + bpf_prog_put(old_prog); + } + mutex_unlock(&mdev->state_lock); + return 0; + } + + if (!mlx4_en_check_xdp_mtu(dev, dev->mtu)) + return -EOPNOTSUPP; + + tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + if (prog) { + prog = bpf_prog_add(prog, priv->rx_ring_num - 1); + if (IS_ERR(prog)) { + err = PTR_ERR(prog); + goto out; + } + } + + mutex_lock(&mdev->state_lock); + memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile)); + new_prof.tx_ring_num[TX_XDP] = xdp_ring_num; + + if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) { + tx_changed = 1; + new_prof.tx_ring_num[TX] = + MAX_TX_RINGS - ALIGN(xdp_ring_num, priv->prof->num_up); + en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n"); + } + + err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, false); + if (err) { + if (prog) + bpf_prog_sub(prog, priv->rx_ring_num - 1); + goto unlock_out; + } + + if (priv->port_up) { + port_up = 1; + mlx4_en_stop_port(dev, 1); + } + + mlx4_en_safe_replace_resources(priv, tmp); + if (tx_changed) + netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]); + + for (i = 0; i < priv->rx_ring_num; i++) { + old_prog = rcu_dereference_protected( + priv->rx_ring[i]->xdp_prog, + lockdep_is_held(&mdev->state_lock)); + rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog); + if (old_prog) + bpf_prog_put(old_prog); + } + + if (port_up) { + err = mlx4_en_start_port(dev); + if (err) { + en_err(priv, "Failed starting port %d for XDP change\n", + priv->port); + if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state)) + queue_work(mdev->workqueue, &priv->restart_task); + } + } + +unlock_out: + mutex_unlock(&mdev->state_lock); +out: + kfree(tmp); + return err; +} + +static u32 mlx4_xdp_query(struct net_device *dev) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + const struct bpf_prog *xdp_prog; + u32 prog_id = 0; + + if (!priv->tx_ring_num[TX_XDP]) + return prog_id; + + mutex_lock(&mdev->state_lock); + xdp_prog = rcu_dereference_protected( + priv->rx_ring[0]->xdp_prog, + lockdep_is_held(&mdev->state_lock)); + if (xdp_prog) + prog_id = xdp_prog->aux->id; + mutex_unlock(&mdev->state_lock); + + return prog_id; +} + +static int mlx4_xdp(struct net_device *dev, struct netdev_bpf *xdp) +{ + switch (xdp->command) { + case XDP_SETUP_PROG: + return mlx4_xdp_set(dev, xdp->prog); + case XDP_QUERY_PROG: + xdp->prog_id = mlx4_xdp_query(dev); + return 0; + default: + return -EINVAL; + } +} + +static const struct net_device_ops mlx4_netdev_ops = { + .ndo_open = mlx4_en_open, + .ndo_stop = mlx4_en_close, + .ndo_start_xmit = mlx4_en_xmit, + .ndo_select_queue = mlx4_en_select_queue, + .ndo_get_stats64 = mlx4_en_get_stats64, + .ndo_set_rx_mode = mlx4_en_set_rx_mode, + .ndo_set_mac_address = mlx4_en_set_mac, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = mlx4_en_change_mtu, + .ndo_do_ioctl = mlx4_en_ioctl, + .ndo_tx_timeout = mlx4_en_tx_timeout, + .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, + .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, + .ndo_set_features = mlx4_en_set_features, + .ndo_fix_features = mlx4_en_fix_features, + .ndo_setup_tc = __mlx4_en_setup_tc, +#ifdef CONFIG_RFS_ACCEL + .ndo_rx_flow_steer = mlx4_en_filter_rfs, +#endif + .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, + .ndo_udp_tunnel_add = mlx4_en_add_vxlan_port, + .ndo_udp_tunnel_del = mlx4_en_del_vxlan_port, + .ndo_features_check = mlx4_en_features_check, + .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, + .ndo_bpf = mlx4_xdp, +}; + +static const struct net_device_ops mlx4_netdev_ops_master = { + .ndo_open = mlx4_en_open, + .ndo_stop = mlx4_en_close, + .ndo_start_xmit = mlx4_en_xmit, + .ndo_select_queue = mlx4_en_select_queue, + .ndo_get_stats64 = mlx4_en_get_stats64, + .ndo_set_rx_mode = mlx4_en_set_rx_mode, + .ndo_set_mac_address = mlx4_en_set_mac, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = mlx4_en_change_mtu, + .ndo_tx_timeout = mlx4_en_tx_timeout, + .ndo_vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid, + .ndo_vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid, + .ndo_set_vf_mac = mlx4_en_set_vf_mac, + .ndo_set_vf_vlan = mlx4_en_set_vf_vlan, + .ndo_set_vf_rate = mlx4_en_set_vf_rate, + .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk, + .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, + .ndo_get_vf_stats = mlx4_en_get_vf_stats, + .ndo_get_vf_config = mlx4_en_get_vf_config, + .ndo_set_features = mlx4_en_set_features, + .ndo_fix_features = mlx4_en_fix_features, + .ndo_setup_tc = __mlx4_en_setup_tc, +#ifdef CONFIG_RFS_ACCEL + .ndo_rx_flow_steer = mlx4_en_filter_rfs, +#endif + .ndo_get_phys_port_id = mlx4_en_get_phys_port_id, + .ndo_udp_tunnel_add = mlx4_en_add_vxlan_port, + .ndo_udp_tunnel_del = mlx4_en_del_vxlan_port, + .ndo_features_check = mlx4_en_features_check, + .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate, + .ndo_bpf = mlx4_xdp, +}; + +struct mlx4_en_bond { + struct work_struct work; + struct mlx4_en_priv *priv; + int is_bonded; + struct mlx4_port_map port_map; +}; + +static void mlx4_en_bond_work(struct work_struct *work) +{ + struct mlx4_en_bond *bond = container_of(work, + struct mlx4_en_bond, + work); + int err = 0; + struct mlx4_dev *dev = bond->priv->mdev->dev; + + if (bond->is_bonded) { + if (!mlx4_is_bonded(dev)) { + err = mlx4_bond(dev); + if (err) + en_err(bond->priv, "Fail to bond device\n"); + } + if (!err) { + err = mlx4_port_map_set(dev, &bond->port_map); + if (err) + en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n", + bond->port_map.port1, + bond->port_map.port2, + err); + } + } else if (mlx4_is_bonded(dev)) { + err = mlx4_unbond(dev); + if (err) + en_err(bond->priv, "Fail to unbond device\n"); + } + dev_put(bond->priv->dev); + kfree(bond); +} + +static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded, + u8 v2p_p1, u8 v2p_p2) +{ + struct mlx4_en_bond *bond = NULL; + + bond = kzalloc(sizeof(*bond), GFP_ATOMIC); + if (!bond) + return -ENOMEM; + + INIT_WORK(&bond->work, mlx4_en_bond_work); + bond->priv = priv; + bond->is_bonded = is_bonded; + bond->port_map.port1 = v2p_p1; + bond->port_map.port2 = v2p_p2; + dev_hold(priv->dev); + queue_work(priv->mdev->workqueue, &bond->work); + return 0; +} + +int mlx4_en_netdev_event(struct notifier_block *this, + unsigned long event, void *ptr) +{ + struct net_device *ndev = netdev_notifier_info_to_dev(ptr); + u8 port = 0; + struct mlx4_en_dev *mdev; + struct mlx4_dev *dev; + int i, num_eth_ports = 0; + bool do_bond = true; + struct mlx4_en_priv *priv; + u8 v2p_port1 = 0; + u8 v2p_port2 = 0; + + if (!net_eq(dev_net(ndev), &init_net)) + return NOTIFY_DONE; + + mdev = container_of(this, struct mlx4_en_dev, nb); + dev = mdev->dev; + + /* Go into this mode only when two network devices set on two ports + * of the same mlx4 device are slaves of the same bonding master + */ + mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) { + ++num_eth_ports; + if (!port && (mdev->pndev[i] == ndev)) + port = i; + mdev->upper[i] = mdev->pndev[i] ? + netdev_master_upper_dev_get(mdev->pndev[i]) : NULL; + /* condition not met: network device is a slave */ + if (!mdev->upper[i]) + do_bond = false; + if (num_eth_ports < 2) + continue; + /* condition not met: same master */ + if (mdev->upper[i] != mdev->upper[i-1]) + do_bond = false; + } + /* condition not met: 2 salves */ + do_bond = (num_eth_ports == 2) ? do_bond : false; + + /* handle only events that come with enough info */ + if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port) + return NOTIFY_DONE; + + priv = netdev_priv(ndev); + if (do_bond) { + struct netdev_notifier_bonding_info *notifier_info = ptr; + struct netdev_bonding_info *bonding_info = + ¬ifier_info->bonding_info; + + /* required mode 1, 2 or 4 */ + if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) && + (bonding_info->master.bond_mode != BOND_MODE_XOR) && + (bonding_info->master.bond_mode != BOND_MODE_8023AD)) + do_bond = false; + + /* require exactly 2 slaves */ + if (bonding_info->master.num_slaves != 2) + do_bond = false; + + /* calc v2p */ + if (do_bond) { + if (bonding_info->master.bond_mode == + BOND_MODE_ACTIVEBACKUP) { + /* in active-backup mode virtual ports are + * mapped to the physical port of the active + * slave */ + if (bonding_info->slave.state == + BOND_STATE_BACKUP) { + if (port == 1) { + v2p_port1 = 2; + v2p_port2 = 2; + } else { + v2p_port1 = 1; + v2p_port2 = 1; + } + } else { /* BOND_STATE_ACTIVE */ + if (port == 1) { + v2p_port1 = 1; + v2p_port2 = 1; + } else { + v2p_port1 = 2; + v2p_port2 = 2; + } + } + } else { /* Active-Active */ + /* in active-active mode a virtual port is + * mapped to the native physical port if and only + * if the physical port is up */ + __s8 link = bonding_info->slave.link; + + if (port == 1) + v2p_port2 = 2; + else + v2p_port1 = 1; + if ((link == BOND_LINK_UP) || + (link == BOND_LINK_FAIL)) { + if (port == 1) + v2p_port1 = 1; + else + v2p_port2 = 2; + } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */ + if (port == 1) + v2p_port1 = 2; + else + v2p_port2 = 1; + } + } + } + } + + mlx4_en_queue_bond_work(priv, do_bond, + v2p_port1, v2p_port2); + + return NOTIFY_DONE; +} + +void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev, + struct mlx4_en_stats_bitmap *stats_bitmap, + u8 rx_ppp, u8 rx_pause, + u8 tx_ppp, u8 tx_pause) +{ + int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS; + + if (!mlx4_is_slave(dev) && + (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) { + mutex_lock(&stats_bitmap->mutex); + bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS); + + if (rx_ppp) + bitmap_set(stats_bitmap->bitmap, last_i, + NUM_FLOW_PRIORITY_STATS_RX); + last_i += NUM_FLOW_PRIORITY_STATS_RX; + + if (rx_pause && !(rx_ppp)) + bitmap_set(stats_bitmap->bitmap, last_i, + NUM_FLOW_STATS_RX); + last_i += NUM_FLOW_STATS_RX; + + if (tx_ppp) + bitmap_set(stats_bitmap->bitmap, last_i, + NUM_FLOW_PRIORITY_STATS_TX); + last_i += NUM_FLOW_PRIORITY_STATS_TX; + + if (tx_pause && !(tx_ppp)) + bitmap_set(stats_bitmap->bitmap, last_i, + NUM_FLOW_STATS_TX); + last_i += NUM_FLOW_STATS_TX; + + mutex_unlock(&stats_bitmap->mutex); + } +} + +void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev, + struct mlx4_en_stats_bitmap *stats_bitmap, + u8 rx_ppp, u8 rx_pause, + u8 tx_ppp, u8 tx_pause) +{ + int last_i = 0; + + mutex_init(&stats_bitmap->mutex); + bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS); + + if (mlx4_is_slave(dev)) { + bitmap_set(stats_bitmap->bitmap, last_i + + MLX4_FIND_NETDEV_STAT(rx_packets), 1); + bitmap_set(stats_bitmap->bitmap, last_i + + MLX4_FIND_NETDEV_STAT(tx_packets), 1); + bitmap_set(stats_bitmap->bitmap, last_i + + MLX4_FIND_NETDEV_STAT(rx_bytes), 1); + bitmap_set(stats_bitmap->bitmap, last_i + + MLX4_FIND_NETDEV_STAT(tx_bytes), 1); + bitmap_set(stats_bitmap->bitmap, last_i + + MLX4_FIND_NETDEV_STAT(rx_dropped), 1); + bitmap_set(stats_bitmap->bitmap, last_i + + MLX4_FIND_NETDEV_STAT(tx_dropped), 1); + } else { + bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS); + } + last_i += NUM_MAIN_STATS; + + bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS); + last_i += NUM_PORT_STATS; + + if (mlx4_is_master(dev)) + bitmap_set(stats_bitmap->bitmap, last_i, + NUM_PF_STATS); + last_i += NUM_PF_STATS; + + mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap, + rx_ppp, rx_pause, + tx_ppp, tx_pause); + last_i += NUM_FLOW_STATS; + + if (!mlx4_is_slave(dev)) + bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS); + last_i += NUM_PKT_STATS; + + bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS); + last_i += NUM_XDP_STATS; + + if (!mlx4_is_slave(dev)) + bitmap_set(stats_bitmap->bitmap, last_i, NUM_PHY_STATS); + last_i += NUM_PHY_STATS; +} + +int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, + struct mlx4_en_port_profile *prof) +{ + struct net_device *dev; + struct mlx4_en_priv *priv; + int i, t; + int err; + + dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv), + MAX_TX_RINGS, MAX_RX_RINGS); + if (dev == NULL) + return -ENOMEM; + + netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]); + netif_set_real_num_rx_queues(dev, prof->rx_ring_num); + + SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev); + dev->dev_port = port - 1; + + /* + * Initialize driver private data + */ + + priv = netdev_priv(dev); + memset(priv, 0, sizeof(struct mlx4_en_priv)); + priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev); + spin_lock_init(&priv->stats_lock); + INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); + INIT_WORK(&priv->restart_task, mlx4_en_restart); + INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); + INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); + INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task); + INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads); + INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads); +#ifdef CONFIG_RFS_ACCEL + INIT_LIST_HEAD(&priv->filters); + spin_lock_init(&priv->filters_lock); +#endif + + priv->dev = dev; + priv->mdev = mdev; + priv->ddev = &mdev->pdev->dev; + priv->prof = prof; + priv->port = port; + priv->port_up = false; + priv->flags = prof->flags; + priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME; + priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | + MLX4_WQE_CTRL_SOLICITED); + priv->num_tx_rings_p_up = mdev->profile.max_num_tx_rings_p_up; + priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK; + netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key)); + + for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) { + priv->tx_ring_num[t] = prof->tx_ring_num[t]; + if (!priv->tx_ring_num[t]) + continue; + + priv->tx_ring[t] = kcalloc(MAX_TX_RINGS, + sizeof(struct mlx4_en_tx_ring *), + GFP_KERNEL); + if (!priv->tx_ring[t]) { + err = -ENOMEM; + goto out; + } + priv->tx_cq[t] = kcalloc(MAX_TX_RINGS, + sizeof(struct mlx4_en_cq *), + GFP_KERNEL); + if (!priv->tx_cq[t]) { + err = -ENOMEM; + goto out; + } + } + priv->rx_ring_num = prof->rx_ring_num; + priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; + priv->cqe_size = mdev->dev->caps.cqe_size; + priv->mac_index = -1; + priv->msg_enable = MLX4_EN_MSG_LEVEL; +#ifdef CONFIG_MLX4_EN_DCB + if (!mlx4_is_slave(priv->mdev->dev)) { + u8 prio; + + for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) { + priv->ets.prio_tc[prio] = prio; + priv->ets.tc_tsa[prio] = IEEE_8021QAZ_TSA_VENDOR; + } + + priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST | + DCB_CAP_DCBX_VER_IEEE; + priv->flags |= MLX4_EN_DCB_ENABLED; + priv->cee_config.pfc_state = false; + + for (i = 0; i < MLX4_EN_NUM_UP_HIGH; i++) + priv->cee_config.dcb_pfc[i] = pfc_disabled; + + if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) { + dev->dcbnl_ops = &mlx4_en_dcbnl_ops; + } else { + en_info(priv, "enabling only PFC DCB ops\n"); + dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops; + } + } +#endif + + for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) + INIT_HLIST_HEAD(&priv->mac_hash[i]); + + /* Query for default mac and max mtu */ + priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port]; + + if (mdev->dev->caps.rx_checksum_flags_port[priv->port] & + MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP) + priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP; + + /* Set default MAC */ + dev->addr_len = ETH_ALEN; + mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]); + if (!is_valid_ether_addr(dev->dev_addr)) { + en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", + priv->port, dev->dev_addr); + err = -EINVAL; + goto out; + } else if (mlx4_is_slave(priv->mdev->dev) && + (priv->mdev->dev->port_random_macs & 1 << priv->port)) { + /* Random MAC was assigned in mlx4_slave_cap + * in mlx4_core module + */ + dev->addr_assign_type |= NET_ADDR_RANDOM; + en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); + } + + memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac)); + + priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) + + DS_SIZE * MLX4_EN_MAX_RX_FRAGS); + err = mlx4_en_alloc_resources(priv); + if (err) + goto out; + + /* Initialize time stamping config */ + priv->hwtstamp_config.flags = 0; + priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF; + priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; + + /* Allocate page for receive rings */ + err = mlx4_alloc_hwq_res(mdev->dev, &priv->res, + MLX4_EN_PAGE_SIZE); + if (err) { + en_err(priv, "Failed to allocate page for rx qps\n"); + goto out; + } + priv->allocated = 1; + + /* + * Initialize netdev entry points + */ + if (mlx4_is_master(priv->mdev->dev)) + dev->netdev_ops = &mlx4_netdev_ops_master; + else + dev->netdev_ops = &mlx4_netdev_ops; + dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT; + netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]); + netif_set_real_num_rx_queues(dev, priv->rx_ring_num); + + dev->ethtool_ops = &mlx4_en_ethtool_ops; + + /* + * Set driver features + */ + dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; + if (mdev->LSO_support) + dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; + + dev->vlan_features = dev->hw_features; + + dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH; + dev->features = dev->hw_features | NETIF_F_HIGHDMA | + NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | + NETIF_F_HW_VLAN_CTAG_FILTER; + dev->hw_features |= NETIF_F_LOOPBACK | + NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; + + if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) { + dev->features |= NETIF_F_HW_VLAN_STAG_RX | + NETIF_F_HW_VLAN_STAG_FILTER; + dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX; + } + + if (mlx4_is_slave(mdev->dev)) { + bool vlan_offload_disabled; + int phv; + + err = get_phv_bit(mdev->dev, port, &phv); + if (!err && phv) { + dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; + priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV; + } + err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port, + &vlan_offload_disabled); + if (!err && vlan_offload_disabled) { + dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_HW_VLAN_CTAG_RX | + NETIF_F_HW_VLAN_STAG_TX | + NETIF_F_HW_VLAN_STAG_RX); + dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_HW_VLAN_CTAG_RX | + NETIF_F_HW_VLAN_STAG_TX | + NETIF_F_HW_VLAN_STAG_RX); + } + } else { + if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN && + !(mdev->dev->caps.flags2 & + MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) + dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX; + } + + if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP) + dev->hw_features |= NETIF_F_RXFCS; + + if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS) + dev->hw_features |= NETIF_F_RXALL; + + if (mdev->dev->caps.steering_mode == + MLX4_STEERING_MODE_DEVICE_MANAGED && + mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC) + dev->hw_features |= NETIF_F_NTUPLE; + + if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) + dev->priv_flags |= IFF_UNICAST_FLT; + + /* Setting a default hash function value */ + if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) { + priv->rss_hash_fn = ETH_RSS_HASH_TOP; + } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) { + priv->rss_hash_fn = ETH_RSS_HASH_XOR; + } else { + en_warn(priv, + "No RSS hash capabilities exposed, using Toeplitz\n"); + priv->rss_hash_fn = ETH_RSS_HASH_TOP; + } + + if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { + dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_GSO_UDP_TUNNEL_CSUM | + NETIF_F_GSO_PARTIAL; + dev->features |= NETIF_F_GSO_UDP_TUNNEL | + NETIF_F_GSO_UDP_TUNNEL_CSUM | + NETIF_F_GSO_PARTIAL; + dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM; + } + + /* MTU range: 68 - hw-specific max */ + dev->min_mtu = ETH_MIN_MTU; + dev->max_mtu = priv->max_mtu; + + mdev->pndev[port] = dev; + mdev->upper[port] = NULL; + + netif_carrier_off(dev); + mlx4_en_set_default_moderation(priv); + + en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]); + en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num); + + mlx4_en_update_loopback_state(priv->dev, priv->dev->features); + + /* Configure port */ + mlx4_en_calc_rx_buf(dev); + err = mlx4_SET_PORT_general(mdev->dev, priv->port, + priv->rx_skb_size + ETH_FCS_LEN, + prof->tx_pause, prof->tx_ppp, + prof->rx_pause, prof->rx_ppp); + if (err) { + en_err(priv, "Failed setting port general configurations for port %d, with error %d\n", + priv->port, err); + goto out; + } + + if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) { + err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1); + if (err) { + en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n", + err); + goto out; + } + } + + /* Init port */ + en_warn(priv, "Initializing port\n"); + err = mlx4_INIT_PORT(mdev->dev, priv->port); + if (err) { + en_err(priv, "Failed Initializing port\n"); + goto out; + } + queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); + + /* Initialize time stamp mechanism */ + if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) + mlx4_en_init_timestamp(mdev); + + queue_delayed_work(mdev->workqueue, &priv->service_task, + SERVICE_TASK_DELAY); + + mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap, + mdev->profile.prof[priv->port].rx_ppp, + mdev->profile.prof[priv->port].rx_pause, + mdev->profile.prof[priv->port].tx_ppp, + mdev->profile.prof[priv->port].tx_pause); + + err = register_netdev(dev); + if (err) { + en_err(priv, "Netdev registration failed for port %d\n", port); + goto out; + } + + priv->registered = 1; + devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port), + dev); + + return 0; + +out: + mlx4_en_destroy_netdev(dev); + return err; +} + +int mlx4_en_reset_config(struct net_device *dev, + struct hwtstamp_config ts_config, + netdev_features_t features) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct mlx4_en_port_profile new_prof; + struct mlx4_en_priv *tmp; + int port_up = 0; + int err = 0; + + if (priv->hwtstamp_config.tx_type == ts_config.tx_type && + priv->hwtstamp_config.rx_filter == ts_config.rx_filter && + !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && + !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) + return 0; /* Nothing to change */ + + if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) && + (features & NETIF_F_HW_VLAN_CTAG_RX) && + (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) { + en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n"); + return -EINVAL; + } + + tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + mutex_lock(&mdev->state_lock); + + memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile)); + memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config)); + + err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true); + if (err) + goto out; + + if (priv->port_up) { + port_up = 1; + mlx4_en_stop_port(dev, 1); + } + + mlx4_en_safe_replace_resources(priv, tmp); + + if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) { + if (features & NETIF_F_HW_VLAN_CTAG_RX) + dev->features |= NETIF_F_HW_VLAN_CTAG_RX; + else + dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; + } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) { + /* RX time-stamping is OFF, update the RX vlan offload + * to the latest wanted state + */ + if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX) + dev->features |= NETIF_F_HW_VLAN_CTAG_RX; + else + dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; + } + + if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) { + if (features & NETIF_F_RXFCS) + dev->features |= NETIF_F_RXFCS; + else + dev->features &= ~NETIF_F_RXFCS; + } + + /* RX vlan offload and RX time-stamping can't co-exist ! + * Regardless of the caller's choice, + * Turn Off RX vlan offload in case of time-stamping is ON + */ + if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) { + if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) + en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n"); + dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX; + } + + if (port_up) { + err = mlx4_en_start_port(dev); + if (err) + en_err(priv, "Failed starting port\n"); + } + + if (!err) + err = mlx4_en_moderation_update(priv); +out: + mutex_unlock(&mdev->state_lock); + kfree(tmp); + if (!err) + netdev_features_change(dev); + return err; +} |