| /* |
| * 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/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/ll_poll.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" |
| |
| 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) |
| return -EINVAL; |
| |
| netdev_set_num_tc(dev, up); |
| |
| /* 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; |
| } |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_NET_LL_RX_POLL |
| /* must be called with local_bh_disable()d */ |
| static int mlx4_en_low_latency_recv(struct napi_struct *napi) |
| { |
| struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi); |
| struct net_device *dev = cq->dev; |
| struct mlx4_en_priv *priv = netdev_priv(dev); |
| struct mlx4_en_rx_ring *rx_ring = &priv->rx_ring[cq->ring]; |
| int done; |
| |
| if (!priv->port_up) |
| return LL_FLUSH_FAILED; |
| |
| if (!mlx4_en_cq_lock_poll(cq)) |
| return LL_FLUSH_BUSY; |
| |
| done = mlx4_en_process_rx_cq(dev, cq, 4); |
| if (likely(done)) |
| rx_ring->cleaned += done; |
| else |
| rx_ring->misses++; |
| |
| mlx4_en_cq_unlock_poll(cq); |
| |
| return done; |
| } |
| #endif /* CONFIG_NET_LL_RX_POLL */ |
| |
| #ifdef CONFIG_RFS_ACCEL |
| |
| struct mlx4_en_filter { |
| struct list_head next; |
| struct work_struct work; |
| |
| __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 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 = { |
| .id = MLX4_NET_TRANS_RULE_ID_TCP, |
| { |
| .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); |
| |
| list_add_tail(&spec_eth.list, &rule.list); |
| list_add_tail(&spec_ip.list, &rule.list); |
| list_add_tail(&spec_tcp.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); |
| |
| 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, __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->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, |
| __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->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; |
| __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; |
| |
| ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl); |
| |
| src_ip = ip->saddr; |
| dst_ip = ip->daddr; |
| src_port = ports[0]; |
| dst_port = ports[1]; |
| |
| if (ip->protocol != IPPROTO_TCP) |
| return -EPROTONOSUPPORT; |
| |
| spin_lock_bh(&priv->filters_lock); |
| filter = mlx4_en_filter_find(priv, src_ip, dst_ip, 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, |
| 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_rx_ring *rx_ring) |
| { |
| 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"); |
| } |
| if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx)) |
| en_err(priv, "failed adding vlan %d\n", vid); |
| mutex_unlock(&mdev->state_lock); |
| |
| return 0; |
| } |
| |
| 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; |
| int idx; |
| |
| 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); |
| if (!mlx4_find_cached_vlan(mdev->dev, priv->port, vid, &idx)) |
| mlx4_unregister_vlan(mdev->dev, priv->port, idx); |
| else |
| en_err(priv, "could not find vid %d in cache\n", 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 0; |
| } |
| |
| 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_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; |
| struct mlx4_mac_entry *entry; |
| int index = 0; |
| int err = 0; |
| u64 reg_id; |
| int *qpn = &priv->base_qpn; |
| u64 mac = mlx4_en_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; |
| } |
| |
| 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); |
| en_dbg(DRV, priv, "Reserved qp %d\n", *qpn); |
| if (err) { |
| en_err(priv, "Failed to reserve qp for mac registration\n"); |
| goto qp_err; |
| } |
| |
| err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, ®_id); |
| if (err) |
| goto steer_err; |
| |
| entry = kmalloc(sizeof(*entry), GFP_KERNEL); |
| if (!entry) { |
| err = -ENOMEM; |
| goto alloc_err; |
| } |
| memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->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: |
| mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id); |
| |
| steer_err: |
| mlx4_qp_release_range(dev, *qpn, 1); |
| |
| qp_err: |
| mlx4_unregister_mac(dev, priv->port, mac); |
| return err; |
| } |
| |
| 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; |
| u64 mac; |
| |
| if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { |
| mac = mlx4_en_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 { |
| struct mlx4_mac_entry *entry; |
| struct hlist_node *tmp; |
| struct hlist_head *bucket; |
| unsigned int i; |
| |
| 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_en_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(dev, priv->port, mac); |
| hlist_del_rcu(&entry->hlist); |
| kfree_rcu(entry, rcu); |
| } |
| } |
| |
| 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_en_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_en_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); |
| return err; |
| } |
| } |
| return -EINVAL; |
| } |
| |
| return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64); |
| } |
| |
| u64 mlx4_en_mac_to_u64(u8 *addr) |
| { |
| u64 mac = 0; |
| int i; |
| |
| for (i = 0; i < ETH_ALEN; i++) { |
| mac <<= 8; |
| mac |= addr[i]; |
| } |
| return mac; |
| } |
| |
| static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv) |
| { |
| int err = 0; |
| |
| if (priv->port_up) { |
| /* Remove old MAC and insert the new one */ |
| err = mlx4_en_replace_mac(priv, priv->base_qpn, |
| priv->dev->dev_addr, priv->prev_mac); |
| if (err) |
| en_err(priv, "Failed changing HW MAC address\n"); |
| memcpy(priv->prev_mac, priv->dev->dev_addr, |
| sizeof(priv->prev_mac)); |
| } else |
| en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); |
| |
| 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; |
| int err; |
| |
| if (!is_valid_ether_addr(saddr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); |
| |
| mutex_lock(&mdev->state_lock); |
| err = mlx4_en_do_set_mac(priv); |
| 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 (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) { |
| 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 (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) { |
| 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"); |
| |
| /* Disable port VLAN filter */ |
| err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); |
| if (err) |
| en_err(priv, "Failed disabling VLAN 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; |
| } |
| |
| /* Enable port VLAN filter */ |
| err = mlx4_SET_VLAN_FLTR(mdev->dev, priv); |
| if (err) |
| en_err(priv, "Failed enabling VLAN filter\n"); |
| } |
| |
| 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_en_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"); |
| |
| /* 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"); |
| |
| } |
| } |
| } |
| } |
| |
| 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, dev->dev_addr)) |
| found = true; |
| |
| if (!found) { |
| mac = mlx4_en_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_en_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; |
| unsigned long flags; |
| int i; |
| |
| for (i = 0; i < priv->rx_ring_num; i++) { |
| cq = &priv->rx_cq[i]; |
| spin_lock_irqsave(&cq->lock, flags); |
| napi_synchronize(&cq->napi); |
| mlx4_en_process_rx_cq(dev, cq, 0); |
| spin_unlock_irqrestore(&cq->lock, flags); |
| } |
| } |
| #endif |
| |
| 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; |
| |
| if (netif_msg_timer(priv)) |
| en_warn(priv, "Tx timeout called on port:%d\n", priv->port); |
| |
| priv->port_stats.tx_timeout++; |
| en_dbg(DRV, priv, "Scheduling watchdog\n"); |
| queue_work(mdev->workqueue, &priv->watchdog_task); |
| } |
| |
| |
| static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev) |
| { |
| struct mlx4_en_priv *priv = netdev_priv(dev); |
| |
| spin_lock_bh(&priv->stats_lock); |
| memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats)); |
| spin_unlock_bh(&priv->stats_lock); |
| |
| return &priv->ret_stats; |
| } |
| |
| static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv) |
| { |
| struct mlx4_en_cq *cq; |
| int i; |
| |
| /* 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 coalesing 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 (i = 0; i < priv->tx_ring_num; i++) { |
| cq = &priv->tx_cq[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); |
| 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; |
| |
| for (ring = 0; ring < priv->rx_ring_num; ring++) { |
| spin_lock_bh(&priv->stats_lock); |
| rx_packets = priv->rx_ring[ring].packets; |
| rx_bytes = priv->rx_ring[ring].bytes; |
| spin_unlock_bh(&priv->stats_lock); |
| |
| rx_pkt_diff = ((unsigned long) (rx_packets - |
| priv->last_moder_packets[ring])); |
| packets = rx_pkt_diff; |
| rate = packets * HZ / period; |
| avg_pkt_size = packets ? ((unsigned long) (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 < priv->pkt_rate_low) |
| moder_time = priv->rx_usecs_low; |
| else if (rate > priv->pkt_rate_high) |
| moder_time = priv->rx_usecs_high; |
| else |
| moder_time = (rate - priv->pkt_rate_low) * |
| (priv->rx_usecs_high - priv->rx_usecs_low) / |
| (priv->pkt_rate_high - priv->pkt_rate_low) + |
| priv->rx_usecs_low; |
| } else { |
| moder_time = priv->rx_usecs_low; |
| } |
| |
| if (moder_time != priv->last_moder_time[ring]) { |
| priv->last_moder_time[ring] = moder_time; |
| cq = &priv->rx_cq[ring]; |
| 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) { |
| err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0); |
| if (err) |
| en_dbg(HW, priv, "Could not update stats\n"); |
| |
| if (priv->port_up) |
| 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); |
| 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); |
| |
| 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); |
| } |
| |
| |
| 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 tx_index = 0; |
| int err = 0; |
| int i; |
| 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]; |
| |
| mlx4_en_cq_init_lock(cq); |
| |
| err = mlx4_en_activate_cq(priv, cq, i); |
| if (err) { |
| en_err(priv, "Failed activating Rx CQ\n"); |
| goto cq_err; |
| } |
| for (j = 0; j < cq->size; j++) |
| cq->buf[j].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"); |
| mlx4_en_deactivate_cq(priv, cq); |
| 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; |
| |
| 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 (i = 0; i < priv->tx_ring_num; i++) { |
| /* Configure cq */ |
| cq = &priv->tx_cq[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"); |
| 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[i]; |
| err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn, |
| i / priv->num_tx_rings_p_up); |
| if (err) { |
| en_err(priv, "Failed allocating Tx ring\n"); |
| mlx4_en_deactivate_cq(priv, cq); |
| goto tx_err; |
| } |
| tx_ring->tx_queue = netdev_get_tx_queue(dev, i); |
| |
| /* Arm CQ for TX completions */ |
| mlx4_en_arm_cq(priv, cq); |
| |
| /* 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; |
| ++tx_index; |
| } |
| |
| /* 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; |
| } |
| /* 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; |
| } |
| |
| /* 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; |
| } |
| |
| /* Attach rx QP to bradcast address */ |
| memset(&mc_list[10], 0xff, ETH_ALEN); |
| 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); |
| |
| mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap); |
| |
| priv->port_up = true; |
| netif_tx_start_all_queues(dev); |
| netif_device_attach(dev); |
| |
| return 0; |
| |
| tx_err: |
| while (tx_index--) { |
| mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]); |
| mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]); |
| } |
| 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]); |
| 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; |
| u8 mc_list[16] = {0}; |
| |
| if (!priv->port_up) { |
| en_dbg(DRV, priv, "stop port called while port already down\n"); |
| return; |
| } |
| |
| /* 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); |
| |
| /* Set port as not active */ |
| priv->port_up = false; |
| |
| /* 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 */ |
| memset(&mc_list[10], 0xff, ETH_ALEN); |
| 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); |
| } |
| 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 (i = 0; i < priv->tx_ring_num; i++) { |
| mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]); |
| mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]); |
| } |
| msleep(10); |
| |
| for (i = 0; i < priv->tx_ring_num; i++) |
| mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]); |
| |
| /* 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_FLAGS2_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]; |
| |
| local_bh_disable(); |
| while (!mlx4_en_cq_lock_napi(cq)) { |
| pr_info("CQ %d locked\n", i); |
| mdelay(1); |
| } |
| local_bh_enable(); |
| |
| mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]); |
| while (test_bit(NAPI_STATE_SCHED, &cq->napi.state)) |
| msleep(1); |
| mlx4_en_deactivate_cq(priv, cq); |
| } |
| |
| /* close port*/ |
| mlx4_CLOSE_PORT(mdev->dev, priv->port); |
| } |
| |
| 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); |
| |
| 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); |
| } |
| |
| 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; |
| int i; |
| |
| if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1)) |
| en_dbg(HW, priv, "Failed dumping statistics\n"); |
| |
| memset(&priv->stats, 0, sizeof(priv->stats)); |
| memset(&priv->pstats, 0, sizeof(priv->pstats)); |
| memset(&priv->pkstats, 0, sizeof(priv->pkstats)); |
| memset(&priv->port_stats, 0, sizeof(priv->port_stats)); |
| |
| for (i = 0; i < priv->tx_ring_num; i++) { |
| priv->tx_ring[i].bytes = 0; |
| priv->tx_ring[i].packets = 0; |
| priv->tx_ring[i].tx_csum = 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; |
| } |
| } |
| |
| 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; |
| } |
| |
| void mlx4_en_free_resources(struct mlx4_en_priv *priv) |
| { |
| int i; |
| |
| #ifdef CONFIG_RFS_ACCEL |
| free_irq_cpu_rmap(priv->dev->rx_cpu_rmap); |
| priv->dev->rx_cpu_rmap = NULL; |
| #endif |
| |
| for (i = 0; i < priv->tx_ring_num; i++) { |
| if (priv->tx_ring[i].tx_info) |
| mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]); |
| if (priv->tx_cq[i].buf) |
| mlx4_en_destroy_cq(priv, &priv->tx_cq[i]); |
| } |
| |
| for (i = 0; i < priv->rx_ring_num; i++) { |
| if (priv->rx_ring[i].rx_info) |
| mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i], |
| priv->prof->rx_ring_size, priv->stride); |
| if (priv->rx_cq[i].buf) |
| mlx4_en_destroy_cq(priv, &priv->rx_cq[i]); |
| } |
| |
| if (priv->base_tx_qpn) { |
| mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num); |
| priv->base_tx_qpn = 0; |
| } |
| } |
| |
| int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) |
| { |
| struct mlx4_en_port_profile *prof = priv->prof; |
| int i; |
| int err; |
| |
| err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn); |
| if (err) { |
| en_err(priv, "failed reserving range for TX rings\n"); |
| return err; |
| } |
| |
| /* Create tx Rings */ |
| for (i = 0; i < priv->tx_ring_num; i++) { |
| if (mlx4_en_create_cq(priv, &priv->tx_cq[i], |
| prof->tx_ring_size, i, TX)) |
| goto err; |
| |
| if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], priv->base_tx_qpn + i, |
| prof->tx_ring_size, TXBB_SIZE)) |
| goto err; |
| } |
| |
| /* Create rx Rings */ |
| for (i = 0; i < priv->rx_ring_num; i++) { |
| if (mlx4_en_create_cq(priv, &priv->rx_cq[i], |
| prof->rx_ring_size, i, RX)) |
| goto err; |
| |
| if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i], |
| prof->rx_ring_size, priv->stride)) |
| goto err; |
| } |
| |
| #ifdef CONFIG_RFS_ACCEL |
| if (priv->mdev->dev->caps.comp_pool) { |
| priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); |
| if (!priv->dev->rx_cpu_rmap) |
| goto err; |
| } |
| #endif |
| |
| return 0; |
| |
| err: |
| en_err(priv, "Failed to allocate NIC resources\n"); |
| return -ENOMEM; |
| } |
| |
| |
| 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) |
| 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); |
| |
| /* Detach the netdev so tasks would not attempt to access it */ |
| mutex_lock(&mdev->state_lock); |
| mdev->pndev[priv->port] = NULL; |
| mutex_unlock(&mdev->state_lock); |
| |
| mlx4_en_free_resources(priv); |
| |
| kfree(priv->tx_ring); |
| kfree(priv->tx_cq); |
| |
| free_netdev(dev); |
| } |
| |
| 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 ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) { |
| en_err(priv, "Bad MTU size:%d.\n", new_mtu); |
| return -EPERM; |
| } |
| 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_ioctl(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: |
| config.rx_filter = HWTSTAMP_FILTER_ALL; |
| break; |
| default: |
| return -ERANGE; |
| } |
| |
| if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) { |
| 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_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| { |
| switch (cmd) { |
| case SIOCSHWTSTAMP: |
| return mlx4_en_hwtstamp_ioctl(dev, ifr); |
| default: |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| static int mlx4_en_set_features(struct net_device *netdev, |
| netdev_features_t features) |
| { |
| struct mlx4_en_priv *priv = netdev_priv(netdev); |
| |
| if (features & NETIF_F_LOOPBACK) |
| priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK); |
| else |
| priv->ctrl_flags &= |
| cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK); |
| |
| mlx4_en_update_loopback_state(netdev, features); |
| |
| 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; |
| u64 mac_u64 = mlx4_en_mac_to_u64(mac); |
| |
| if (!is_valid_ether_addr(mac)) |
| return -EINVAL; |
| |
| return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64); |
| } |
| |
| static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos) |
| { |
| 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); |
| } |
| |
| 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 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_stats = mlx4_en_get_stats, |
| .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, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = mlx4_en_netpoll, |
| #endif |
| .ndo_set_features = mlx4_en_set_features, |
| .ndo_setup_tc = mlx4_en_setup_tc, |
| #ifdef CONFIG_RFS_ACCEL |
| .ndo_rx_flow_steer = mlx4_en_filter_rfs, |
| #endif |
| #ifdef CONFIG_NET_LL_RX_POLL |
| .ndo_ll_poll = mlx4_en_low_latency_recv, |
| #endif |
| }; |
| |
| 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_stats = mlx4_en_get_stats, |
| .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_spoofchk = mlx4_en_set_vf_spoofchk, |
| .ndo_set_vf_link_state = mlx4_en_set_vf_link_state, |
| .ndo_get_vf_config = mlx4_en_get_vf_config, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = mlx4_en_netpoll, |
| #endif |
| .ndo_set_features = mlx4_en_set_features, |
| .ndo_setup_tc = mlx4_en_setup_tc, |
| #ifdef CONFIG_RFS_ACCEL |
| .ndo_rx_flow_steer = mlx4_en_filter_rfs, |
| #endif |
| }; |
| |
| 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; |
| int err; |
| u64 mac_u64; |
| |
| 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); |
| netif_set_real_num_rx_queues(dev, prof->rx_ring_num); |
| |
| SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev); |
| dev->dev_id = port - 1; |
| |
| /* |
| * Initialize driver private data |
| */ |
| |
| priv = netdev_priv(dev); |
| memset(priv, 0, sizeof(struct mlx4_en_priv)); |
| 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->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE | |
| MLX4_WQE_CTRL_SOLICITED); |
| priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up; |
| priv->tx_ring_num = prof->tx_ring_num; |
| |
| priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring) * MAX_TX_RINGS, |
| GFP_KERNEL); |
| if (!priv->tx_ring) { |
| err = -ENOMEM; |
| goto out; |
| } |
| priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq) * MAX_TX_RINGS, |
| GFP_KERNEL); |
| if (!priv->tx_cq) { |
| err = -ENOMEM; |
| goto out; |
| } |
| priv->rx_ring_num = prof->rx_ring_num; |
| priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0; |
| priv->mac_index = -1; |
| priv->msg_enable = MLX4_EN_MSG_LEVEL; |
| spin_lock_init(&priv->stats_lock); |
| INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); |
| INIT_WORK(&priv->watchdog_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); |
| #ifdef CONFIG_MLX4_EN_DCB |
| if (!mlx4_is_slave(priv->mdev->dev)) { |
| if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) { |
| 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]; |
| |
| /* 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)) { |
| if (mlx4_is_slave(priv->mdev->dev)) { |
| eth_hw_addr_random(dev); |
| en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr); |
| mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr); |
| mdev->dev->caps.def_mac[priv->port] = mac_u64; |
| } else { |
| en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n", |
| priv->port, dev->dev_addr); |
| err = -EINVAL; |
| goto out; |
| } |
| } |
| |
| memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_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; |
| |
| #ifdef CONFIG_RFS_ACCEL |
| INIT_LIST_HEAD(&priv->filters); |
| spin_lock_init(&priv->filters_lock); |
| #endif |
| |
| /* 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, 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); |
| netif_set_real_num_rx_queues(dev, priv->rx_ring_num); |
| |
| SET_ETHTOOL_OPS(dev, &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; |
| |
| if (mdev->dev->caps.steering_mode == |
| MLX4_STEERING_MODE_DEVICE_MANAGED) |
| dev->hw_features |= NETIF_F_NTUPLE; |
| |
| if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0) |
| dev->priv_flags |= IFF_UNICAST_FLT; |
| |
| mdev->pndev[port] = dev; |
| |
| netif_carrier_off(dev); |
| err = register_netdev(dev); |
| if (err) { |
| en_err(priv, "Netdev registration failed for port %d\n", port); |
| goto out; |
| } |
| priv->registered = 1; |
| |
| en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num); |
| 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; |
| } |
| |
| /* 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; |
| } |
| mlx4_en_set_default_moderation(priv); |
| queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); |
| |
| if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) |
| queue_delayed_work(mdev->workqueue, &priv->service_task, |
| SERVICE_TASK_DELAY); |
| |
| return 0; |
| |
| out: |
| mlx4_en_destroy_netdev(dev); |
| return err; |
| } |
| |