--- /dev/null
+/*
+ * 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/busy_poll.h>
+#include <net/vxlan.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_RX_BUSY_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_RX_BUSY_POLL */
+
+#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;
+ }
+};
+
+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");
+ }
+ if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
+ en_dbg(HW, 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;
+
+ 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 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_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;
+ struct mlx4_mac_entry *entry;
+ int index = 0;
+ int err = 0;
+ u64 reg_id = 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;
+ }
+
+ 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);
+ 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;
+
+ 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);
+
+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_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_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);
+ }
+ }
+
+ if (priv->tunnel_reg_id) {
+ mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
+ priv->tunnel_reg_id = 0;
+ }
+
+ 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 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)
+ memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
+ 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->rx_ring_num; i++) {
+ cq = priv->rx_cq[i];
+ napi_schedule(&cq->napi);
+ }
+}
+#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;
+ 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; 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, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
+ priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
+ }
+
+ 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) {
+ 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);
+}
+
+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_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;
+
+ 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\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[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;
+ }
+
+ 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;
+ }
+
+ /* 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);
+
+#ifdef CONFIG_MLX4_EN_VXLAN
+ if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
+ vxlan_get_rx_port(dev);
+#endif
+ 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]);
+ 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;
+ 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);
+
+ /* 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 */
+ 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 (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_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];
+
+ local_bh_disable();
+ while (!mlx4_en_cq_lock_napi(cq)) {
+ pr_info("CQ %d locked\n", i);
+ mdelay(1);
+ }
+ local_bh_enable();
+
+ 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);
+
+ 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));
+ 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));
+
+ 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;
+ 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;
+}
+
+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 && priv->tx_ring[i])
+ mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
+ if (priv->tx_cq && priv->tx_cq[i])
+ mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
+ }
+
+ 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]);
+ }
+
+}
+
+int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
+{
+ struct mlx4_en_port_profile *prof = priv->prof;
+ int i;
+ int node;
+
+ /* Create tx Rings */
+ for (i = 0; i < priv->tx_ring_num; i++) {
+ node = cpu_to_node(i % num_online_cpus());
+ if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
+ prof->tx_ring_size, i, TX, node))
+ goto err;
+
+ if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[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
+ 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");
+ 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 (i = 0; i < priv->tx_ring_num; i++) {
+ if (priv->tx_ring[i])
+ mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
+ if (priv->tx_cq[i])
+ mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
+ }
+ 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;
+ mdev->upper[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_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:
+ 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 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_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;
+ u64 mac_u64 = mlx4_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_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);
+}
+
+#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;
+}
+
+#ifdef CONFIG_MLX4_EN_VXLAN
+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_RXCSUM |
+ NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
+ priv->dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
+ priv->dev->features |= NETIF_F_GSO_UDP_TUNNEL;
+}
+
+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_RXCSUM |
+ NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL);
+ priv->dev->hw_features &= ~NETIF_F_GSO_UDP_TUNNEL;
+ priv->dev->features &= ~NETIF_F_GSO_UDP_TUNNEL;
+
+ 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,
+ sa_family_t sa_family, __be16 port)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ __be16 current_port;
+
+ if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
+ return;
+
+ if (sa_family == AF_INET6)
+ 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,
+ sa_family_t sa_family, __be16 port)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ __be16 current_port;
+
+ if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
+ return;
+
+ if (sa_family == AF_INET6)
+ 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);
+ return vxlan_features_check(skb, features);
+}
+#endif
+
+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[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 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_RX_BUSY_POLL
+ .ndo_busy_poll = mlx4_en_low_latency_recv,
+#endif
+ .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
+#ifdef CONFIG_MLX4_EN_VXLAN
+ .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
+ .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
+ .ndo_features_check = mlx4_en_features_check,
+#endif
+ .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
+};
+
+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_rate = mlx4_en_set_vf_rate,
+ .ndo_set_vf_spoofchk = mlx4_en_set_vf_spoofchk,
+ .ndo_set_vf_link_state = mlx4_en_set_vf_link_state,
+ .ndo_get_vf_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
+ .ndo_get_phys_port_id = mlx4_en_get_phys_port_id,
+#ifdef CONFIG_MLX4_EN_VXLAN
+ .ndo_add_vxlan_port = mlx4_en_add_vxlan_port,
+ .ndo_del_vxlan_port = mlx4_en_del_vxlan_port,
+ .ndo_features_check = mlx4_en_features_check,
+#endif
+ .ndo_set_tx_maxrate = mlx4_en_set_tx_maxrate,
+};
+
+struct mlx4_en_bond {
+ struct work_struct work;
+ struct mlx4_en_priv *priv;
+ int is_bonded;
+ struct mlx4_port_map port_map;
+};
+
+static void mlx4_en_bond_work(struct work_struct *work)
+{
+ struct mlx4_en_bond *bond = container_of(work,
+ struct mlx4_en_bond,
+ work);
+ int err = 0;
+ struct mlx4_dev *dev = bond->priv->mdev->dev;
+
+ if (bond->is_bonded) {
+ if (!mlx4_is_bonded(dev)) {
+ err = mlx4_bond(dev);
+ if (err)
+ en_err(bond->priv, "Fail to bond device\n");
+ }
+ if (!err) {
+ err = mlx4_port_map_set(dev, &bond->port_map);
+ if (err)
+ en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
+ bond->port_map.port1,
+ bond->port_map.port2,
+ err);
+ }
+ } else if (mlx4_is_bonded(dev)) {
+ err = mlx4_unbond(dev);
+ if (err)
+ en_err(bond->priv, "Fail to unbond device\n");
+ }
+ dev_put(bond->priv->dev);
+ kfree(bond);
+}
+
+static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
+ u8 v2p_p1, u8 v2p_p2)
+{
+ struct mlx4_en_bond *bond = NULL;
+
+ bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
+ if (!bond)
+ return -ENOMEM;
+
+ INIT_WORK(&bond->work, mlx4_en_bond_work);
+ bond->priv = priv;
+ bond->is_bonded = is_bonded;
+ bond->port_map.port1 = v2p_p1;
+ bond->port_map.port2 = v2p_p2;
+ dev_hold(priv->dev);
+ queue_work(priv->mdev->workqueue, &bond->work);
+ return 0;
+}
+
+int mlx4_en_netdev_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
+ u8 port = 0;
+ struct mlx4_en_dev *mdev;
+ struct mlx4_dev *dev;
+ int i, num_eth_ports = 0;
+ bool do_bond = true;
+ struct mlx4_en_priv *priv;
+ u8 v2p_port1 = 0;
+ u8 v2p_port2 = 0;
+
+ if (!net_eq(dev_net(ndev), &init_net))
+ return NOTIFY_DONE;
+
+ mdev = container_of(this, struct mlx4_en_dev, nb);
+ dev = mdev->dev;
+
+ /* Go into this mode only when two network devices set on two ports
+ * of the same mlx4 device are slaves of the same bonding master
+ */
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
+ ++num_eth_ports;
+ if (!port && (mdev->pndev[i] == ndev))
+ port = i;
+ mdev->upper[i] = mdev->pndev[i] ?
+ netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
+ /* condition not met: network device is a slave */
+ if (!mdev->upper[i])
+ do_bond = false;
+ if (num_eth_ports < 2)
+ continue;
+ /* condition not met: same master */
+ if (mdev->upper[i] != mdev->upper[i-1])
+ do_bond = false;
+ }
+ /* condition not met: 2 salves */
+ do_bond = (num_eth_ports == 2) ? do_bond : false;
+
+ /* handle only events that come with enough info */
+ if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
+ return NOTIFY_DONE;
+
+ priv = netdev_priv(ndev);
+ if (do_bond) {
+ struct netdev_notifier_bonding_info *notifier_info = ptr;
+ struct netdev_bonding_info *bonding_info =
+ ¬ifier_info->bonding_info;
+
+ /* required mode 1, 2 or 4 */
+ if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
+ (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
+ (bonding_info->master.bond_mode != BOND_MODE_8023AD))
+ do_bond = false;
+
+ /* require exactly 2 slaves */
+ if (bonding_info->master.num_slaves != 2)
+ do_bond = false;
+
+ /* calc v2p */
+ if (do_bond) {
+ if (bonding_info->master.bond_mode ==
+ BOND_MODE_ACTIVEBACKUP) {
+ /* in active-backup mode virtual ports are
+ * mapped to the physical port of the active
+ * slave */
+ if (bonding_info->slave.state ==
+ BOND_STATE_BACKUP) {
+ if (port == 1) {
+ v2p_port1 = 2;
+ v2p_port2 = 2;
+ } else {
+ v2p_port1 = 1;
+ v2p_port2 = 1;
+ }
+ } else { /* BOND_STATE_ACTIVE */
+ if (port == 1) {
+ v2p_port1 = 1;
+ v2p_port2 = 1;
+ } else {
+ v2p_port1 = 2;
+ v2p_port2 = 2;
+ }
+ }
+ } else { /* Active-Active */
+ /* in active-active mode a virtual port is
+ * mapped to the native physical port if and only
+ * if the physical port is up */
+ __s8 link = bonding_info->slave.link;
+
+ if (port == 1)
+ v2p_port2 = 2;
+ else
+ v2p_port1 = 1;
+ if ((link == BOND_LINK_UP) ||
+ (link == BOND_LINK_FAIL)) {
+ if (port == 1)
+ v2p_port1 = 1;
+ else
+ v2p_port2 = 2;
+ } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
+ if (port == 1)
+ v2p_port1 = 2;
+ else
+ v2p_port2 = 1;
+ }
+ }
+ }
+ }
+
+ mlx4_en_queue_bond_work(priv, do_bond,
+ v2p_port1, v2p_port2);
+
+ return NOTIFY_DONE;
+}
+
+void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
+ struct mlx4_en_stats_bitmap *stats_bitmap,
+ u8 rx_ppp, u8 rx_pause,
+ u8 tx_ppp, u8 tx_pause)
+{
+ int last_i = NUM_MAIN_STATS + NUM_PORT_STATS;
+
+ if (!mlx4_is_slave(dev) &&
+ (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
+ mutex_lock(&stats_bitmap->mutex);
+ bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
+
+ if (rx_ppp)
+ bitmap_set(stats_bitmap->bitmap, last_i,
+ NUM_FLOW_PRIORITY_STATS_RX);
+ last_i += NUM_FLOW_PRIORITY_STATS_RX;
+
+ if (rx_pause && !(rx_ppp))
+ bitmap_set(stats_bitmap->bitmap, last_i,
+ NUM_FLOW_STATS_RX);
+ last_i += NUM_FLOW_STATS_RX;
+
+ if (tx_ppp)
+ bitmap_set(stats_bitmap->bitmap, last_i,
+ NUM_FLOW_PRIORITY_STATS_TX);
+ last_i += NUM_FLOW_PRIORITY_STATS_TX;
+
+ if (tx_pause && !(tx_ppp))
+ bitmap_set(stats_bitmap->bitmap, last_i,
+ NUM_FLOW_STATS_TX);
+ last_i += NUM_FLOW_STATS_TX;
+
+ mutex_unlock(&stats_bitmap->mutex);
+ }
+}
+
+void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
+ struct mlx4_en_stats_bitmap *stats_bitmap,
+ u8 rx_ppp, u8 rx_pause,
+ u8 tx_ppp, u8 tx_pause)
+{
+ int last_i = 0;
+
+ mutex_init(&stats_bitmap->mutex);
+ bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
+
+ if (mlx4_is_slave(dev)) {
+ bitmap_set(stats_bitmap->bitmap, last_i +
+ MLX4_FIND_NETDEV_STAT(rx_packets), 1);
+ bitmap_set(stats_bitmap->bitmap, last_i +
+ MLX4_FIND_NETDEV_STAT(tx_packets), 1);
+ bitmap_set(stats_bitmap->bitmap, last_i +
+ MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
+ bitmap_set(stats_bitmap->bitmap, last_i +
+ MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
+ bitmap_set(stats_bitmap->bitmap, last_i +
+ MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
+ bitmap_set(stats_bitmap->bitmap, last_i +
+ MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
+ } else {
+ bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
+ }
+ last_i += NUM_MAIN_STATS;
+
+ bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
+ last_i += NUM_PORT_STATS;
+
+ mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
+ rx_ppp, rx_pause,
+ tx_ppp, tx_pause);
+ last_i += NUM_FLOW_STATS;
+
+ if (!mlx4_is_slave(dev))
+ bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
+}
+
+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->persist->pdev->dev);
+ dev->dev_port = port - 1;
+
+ /*
+ * Initialize driver private data
+ */
+
+ priv = netdev_priv(dev);
+ memset(priv, 0, sizeof(struct mlx4_en_priv));
+ 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_VXLAN
+ INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
+ INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
+#endif
+#ifdef CONFIG_RFS_ACCEL
+ INIT_LIST_HEAD(&priv->filters);
+ spin_lock_init(&priv->filters_lock);
+#endif
+
+ priv->dev = dev;
+ priv->mdev = mdev;
+ priv->ddev = &mdev->pdev->dev;
+ priv->prof = prof;
+ priv->port = port;
+ priv->port_up = false;
+ priv->flags = prof->flags;
+ priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
+ priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
+ MLX4_WQE_CTRL_SOLICITED);
+ priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
+ priv->tx_ring_num = prof->tx_ring_num;
+ priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
+ netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
+
+ 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->cqe_size = mdev->dev->caps.cqe_size;
+ priv->mac_index = -1;
+ priv->msg_enable = MLX4_EN_MSG_LEVEL;
+#ifdef CONFIG_MLX4_EN_DCB
+ if (!mlx4_is_slave(priv->mdev->dev)) {
+ if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
+ dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
+ } else {
+ en_info(priv, "enabling only PFC DCB ops\n");
+ dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
+ }
+ }
+#endif
+
+ for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
+ INIT_HLIST_HEAD(&priv->mac_hash[i]);
+
+ /* Query for default mac and max mtu */
+ priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
+
+ if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
+ MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
+ priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
+
+ /* Set default MAC */
+ dev->addr_len = ETH_ALEN;
+ mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
+ if (!is_valid_ether_addr(dev->dev_addr)) {
+ 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_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->current_mac, dev->dev_addr, sizeof(priv->current_mac));
+
+ priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
+ DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
+ err = mlx4_en_alloc_resources(priv);
+ if (err)
+ goto out;
+
+ /* Initialize time stamping config */
+ priv->hwtstamp_config.flags = 0;
+ priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
+ priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
+
+ /* Allocate page for receive rings */
+ err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
+ MLX4_EN_PAGE_SIZE, 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);
+
+ dev->ethtool_ops = &mlx4_en_ethtool_ops;
+
+ /*
+ * Set driver features
+ */
+ dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+ if (mdev->LSO_support)
+ dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
+
+ dev->vlan_features = dev->hw_features;
+
+ dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
+ dev->features = dev->hw_features | NETIF_F_HIGHDMA |
+ NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
+ NETIF_F_HW_VLAN_CTAG_FILTER;
+ dev->hw_features |= NETIF_F_LOOPBACK |
+ NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
+
+ if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
+ dev->hw_features |= NETIF_F_RXFCS;
+
+ if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
+ dev->hw_features |= NETIF_F_RXALL;
+
+ if (mdev->dev->caps.steering_mode ==
+ MLX4_STEERING_MODE_DEVICE_MANAGED &&
+ mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
+ dev->hw_features |= NETIF_F_NTUPLE;
+
+ if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
+ dev->priv_flags |= IFF_UNICAST_FLT;
+
+ /* Setting a default hash function value */
+ if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
+ priv->rss_hash_fn = ETH_RSS_HASH_TOP;
+ } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
+ priv->rss_hash_fn = ETH_RSS_HASH_XOR;
+ } else {
+ en_warn(priv,
+ "No RSS hash capabilities exposed, using Toeplitz\n");
+ priv->rss_hash_fn = ETH_RSS_HASH_TOP;
+ }
+
+ mdev->pndev[port] = dev;
+ mdev->upper[port] = NULL;
+
+ netif_carrier_off(dev);
+ mlx4_en_set_default_moderation(priv);
+
+ en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
+ en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
+
+ mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
+
+ /* Configure port */
+ mlx4_en_calc_rx_buf(dev);
+ err = mlx4_SET_PORT_general(mdev->dev, priv->port,
+ priv->rx_skb_size + ETH_FCS_LEN,
+ prof->tx_pause, prof->tx_ppp,
+ prof->rx_pause, prof->rx_ppp);
+ if (err) {
+ en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
+ priv->port, err);
+ goto out;
+ }
+
+ if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
+ err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
+ if (err) {
+ en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
+ err);
+ goto out;
+ }
+ }
+
+ /* Init port */
+ en_warn(priv, "Initializing port\n");
+ err = mlx4_INIT_PORT(mdev->dev, priv->port);
+ if (err) {
+ en_err(priv, "Failed Initializing port\n");
+ goto out;
+ }
+ queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
+
+ if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
+ queue_delayed_work(mdev->workqueue, &priv->service_task,
+ SERVICE_TASK_DELAY);
+
+ mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
+ mdev->profile.prof[priv->port].rx_ppp,
+ mdev->profile.prof[priv->port].rx_pause,
+ mdev->profile.prof[priv->port].tx_ppp,
+ mdev->profile.prof[priv->port].tx_pause);
+
+ err = register_netdev(dev);
+ if (err) {
+ en_err(priv, "Netdev registration failed for port %d\n", port);
+ goto out;
+ }
+
+ priv->registered = 1;
+
+ return 0;
+
+out:
+ mlx4_en_destroy_netdev(dev);
+ return err;
+}
+
+int mlx4_en_reset_config(struct net_device *dev,
+ struct hwtstamp_config ts_config,
+ netdev_features_t features)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int port_up = 0;
+ int err = 0;
+
+ if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
+ priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
+ !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
+ !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
+ return 0; /* Nothing to change */
+
+ if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
+ (features & NETIF_F_HW_VLAN_CTAG_RX) &&
+ (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
+ en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&mdev->state_lock);
+ if (priv->port_up) {
+ port_up = 1;
+ mlx4_en_stop_port(dev, 1);
+ }
+
+ mlx4_en_free_resources(priv);
+
+ en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
+ ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX));
+
+ priv->hwtstamp_config.tx_type = ts_config.tx_type;
+ priv->hwtstamp_config.rx_filter = ts_config.rx_filter;
+
+ if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
+ if (features & NETIF_F_HW_VLAN_CTAG_RX)
+ dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
+ else
+ dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
+ } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
+ /* RX time-stamping is OFF, update the RX vlan offload
+ * to the latest wanted state
+ */
+ if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
+ dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
+ else
+ dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
+ }
+
+ if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
+ if (features & NETIF_F_RXFCS)
+ dev->features |= NETIF_F_RXFCS;
+ else
+ dev->features &= ~NETIF_F_RXFCS;
+ }
+
+ /* RX vlan offload and RX time-stamping can't co-exist !
+ * Regardless of the caller's choice,
+ * Turn Off RX vlan offload in case of time-stamping is ON
+ */
+ if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
+ if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
+ en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
+ dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
+ }
+
+ err = mlx4_en_alloc_resources(priv);
+ if (err) {
+ en_err(priv, "Failed reallocating port resources\n");
+ goto out;
+ }
+ if (port_up) {
+ err = mlx4_en_start_port(dev);
+ if (err)
+ en_err(priv, "Failed starting port\n");
+ }
+
+out:
+ mutex_unlock(&mdev->state_lock);
+ netdev_features_change(dev);
+ return err;
+}
Code Review / kvmfornfv.git / blobdiff