| /* |
| * 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 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; |
| 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_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->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); |
| } |
| |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| static void mlx4_en_netpoll(struct net_device *dev) |
| { |
| struct mlx4_en_priv *priv = netdev_priv(dev); |
| struct mlx4_en_cq *cq; |
| int i; |
| |
| for (i = 0; i < priv->tx_ring_num[TX]; i++) { |
| cq = priv->tx_cq[TX][i]; |
| napi_schedule(&cq->napi); |
| } |
| } |
| #endif |
| |
| 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++; |
| en_dbg(DRV, priv, "Scheduling watchdog\n"); |
| queue_work(mdev->workqueue, &priv->watchdog_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; |
| } |
| 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_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(); |
| } |
| |
| 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, |
| watchdog_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)) |
| 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] = kzalloc(sizeof(struct mlx4_en_tx_ring *) * |
| MAX_TX_RINGS, GFP_KERNEL); |
| if (!dst->tx_ring[t]) |
| goto err_free_tx; |
| |
| dst->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) * |
| MAX_TX_RINGS, 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; |
| |
| mlx4_en_copy_priv(tmp, priv, prof); |
| |
| 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 watchdog 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); |
| queue_work(mdev->workqueue, &priv->watchdog_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); |
| queue_work(mdev->workqueue, &priv->watchdog_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_xdp *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); |
| xdp->prog_attached = !!xdp |