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freebsd-dev/sys/ofed/drivers/net/mlx4/en_netdev.c
Hans Petter Selasky 2404bdddf1 Merge LinuxKPI changes from DragonflyBSD: 
- Add more list related functions and macros.
- Update the hlist_for_each_entry() macro to take one less argument.

Sponsored by:	Mellanox Technologies
2015-10-19 11:57:33 +00:00

2624 lines
76 KiB
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/*
* Copyright (c) 2007, 2014 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/delay.h>
#include <linux/slab.h>
#ifdef CONFIG_NET_RX_BUSY_POLL
#include <net/busy_poll.h>
#endif
#include <linux/list.h>
#include <linux/if_ether.h>
#include <linux/mlx4/driver.h>
#include <linux/mlx4/device.h>
#include <linux/mlx4/cmd.h>
#include <linux/mlx4/cq.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include "mlx4_en.h"
#include "en_port.h"
static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv);
static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv);
static int mlx4_en_unit;
#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);
#ifdef LL_EXTENDED_STATS
if (done)
rx_ring->cleaned += done;
else
rx_ring->misses++;
#endif
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 -EPROTONOSUPPORT;
}
};
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 < 0) {
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_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 void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
int err;
int idx;
if (arg != priv)
return;
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);
}
static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
int err;
if (arg != priv)
return;
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);
}
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_mac_to_u64(IF_LLADDR(priv->dev));
en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
IF_LLADDR(priv->dev));
index = mlx4_register_mac(dev, priv->port, mac);
if (index < 0) {
err = index;
en_err(priv, "Failed adding MAC: %pM\n",
IF_LLADDR(priv->dev));
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, 0);
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, IF_LLADDR(priv->dev), qpn, &reg_id);
if (err)
goto steer_err;
entry = kmalloc(sizeof(*entry), GFP_KERNEL);
if (!entry) {
err = -ENOMEM;
goto alloc_err;
}
memcpy(entry->mac, IF_LLADDR(priv->dev), sizeof(entry->mac));
entry->reg_id = reg_id;
hlist_add_head(&entry->hlist,
&priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
return 0;
alloc_err:
mlx4_en_uc_steer_release(priv, IF_LLADDR(priv->dev), *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(IF_LLADDR(priv->dev));
en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
IF_LLADDR(priv->dev));
mlx4_unregister_mac(dev, priv->port, mac);
} else {
struct mlx4_mac_entry *entry;
struct hlist_node *n, *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, n, 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(&entry->hlist);
kfree(entry);
}
}
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 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 ifmultiaddr *ifma;
struct mlx4_en_mc_list *tmp;
struct mlx4_en_priv *priv = netdev_priv(dev);
if_maddr_rlock(dev);
TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
ETHER_ADDR_LEN)
continue;
/* Make sure the list didn't grow. */
tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
if (tmp == NULL)
break;
memcpy(tmp->addr,
LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETH_ALEN);
list_add_tail(&tmp->list, &priv->mc_list);
}
if_maddr_runlock(dev);
}
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 = kmalloc(sizeof(struct mlx4_en_mc_list),
GFP_KERNEL);
if (!new_mc) {
en_err(priv, "Failed to allocate current multicast list\n");
return;
}
memcpy(new_mc, src_tmp,
sizeof(struct mlx4_en_mc_list));
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)) {
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;
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;
u8 mc_list[16] = {0};
int err = 0;
u64 mcast_addr = 0;
/* Enable/disable the multicast filter according to IFF_ALLMULTI */
if (dev->if_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 */
mlx4_en_cache_mclist(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");
/* 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_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 (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
if (priv->port_state.link_state) {
priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
/* Important note: the following call for if_link_state_change
* is needed for interface up scenario (start port, link state
* change) */
/* update netif baudrate */
priv->dev->if_baudrate =
IF_Mbps(priv->port_state.link_speed);
if_link_state_change(priv->dev, LINK_STATE_UP);
en_dbg(HW, priv, "Link Up\n");
}
}
/* Promsicuous mode: disable all filters */
if ((dev->if_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_watchdog_timeout(void *arg)
{
struct mlx4_en_priv *priv = arg;
struct mlx4_en_dev *mdev = priv->mdev;
en_dbg(DRV, priv, "Scheduling watchdog\n");
queue_work(mdev->workqueue, &priv->watchdog_task);
if (priv->port_up)
callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
mlx4_en_watchdog_timeout, priv);
}
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 coelsing target.
* - moder_time is set to a fixed value.
*/
priv->rx_frames = MLX4_EN_RX_COAL_TARGET / priv->dev->if_mtu + 1;
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: %u - "
"rx_frames:%d rx_usecs:%d\n",
(unsigned)priv->dev->if_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(&priv->stats_lock);
rx_packets = priv->rx_ring[ring]->packets;
rx_bytes = priv->rx_ring[ring]->bytes;
spin_unlock(&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;
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);
}
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) {
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");
if_link_state_change(priv->dev, LINK_STATE_DOWN);
/* update netif baudrate */
priv->dev->if_baudrate = 0;
/* make sure the port is up before notifying the OS.
* This is tricky since we get here on INIT_PORT and
* in such case we can't tell the OS the port is up.
* To solve this there is a call to if_link_state_change
* in set_rx_mode.
* */
} else if (priv->port_up && (linkstate == MLX4_DEV_EVENT_PORT_UP)){
if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
en_info(priv, "Query port failed\n");
priv->dev->if_baudrate =
IF_Mbps(priv->port_state.link_speed);
en_info(priv, "Link Up\n");
if_link_state_change(priv->dev, LINK_STATE_UP);
}
}
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);
/* Calculate Rx buf size */
dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
mlx4_en_calc_rx_buf(dev);
priv->rx_alloc_size = max_t(int, 2 * roundup_pow_of_two(priv->rx_mb_size),
PAGE_SIZE);
priv->rx_alloc_order = get_order(priv->rx_alloc_size);
priv->rx_buf_size = roundup_pow_of_two(priv->rx_mb_size);
priv->log_rx_info = ROUNDUP_LOG2(sizeof(struct mlx4_en_rx_buf));
en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_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;
/* gets default allocated counter index from func cap */
/* or sink counter index if no resources */
priv->counter_index = mdev->dev->caps.def_counter_index[priv->port - 1];
en_dbg(DRV, priv, "%s: default counter index %d for port %d\n",
__func__, priv->counter_index, priv->port);
err = mlx4_en_config_rss_steer(priv);
if (err) {
en_err(priv, "Failed configuring rss steering\n");
goto mac_err;
}
err = mlx4_en_create_drop_qp(priv);
if (err)
goto rss_err;
/* Configure tx cq's and rings */
for (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 activating 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 activating Tx ring %d\n", i);
mlx4_en_deactivate_cq(priv, cq);
goto tx_err;
}
/* 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_mb_size,
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;
/* Enable the queues. */
dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
dev->if_drv_flags |= IFF_DRV_RUNNING;
#ifdef CONFIG_DEBUG_FS
mlx4_en_create_debug_files(priv);
#endif
callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
mlx4_en_watchdog_timeout, priv);
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)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
struct mlx4_en_mc_list *mclist, *tmp;
int i;
u8 mc_list[16] = {0};
if (!priv->port_up) {
en_dbg(DRV, priv, "stop port called while port already down\n");
return;
}
#ifdef CONFIG_DEBUG_FS
mlx4_en_delete_debug_files(priv);
#endif
/* close port*/
mlx4_CLOSE_PORT(mdev->dev, priv->port);
/* Set port as not active */
priv->port_up = false;
if (priv->counter_index != 0xff) {
mlx4_counter_free(mdev->dev, priv->port, priv->counter_index);
priv->counter_index = 0xff;
}
/* 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);
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);
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];
mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
mlx4_en_deactivate_cq(priv, cq);
}
callout_stop(&priv->watchdog_timer);
dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
}
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;
struct mlx4_en_tx_ring *ring;
int i;
if (priv->blocked == 0 || priv->port_up == 0)
return;
for (i = 0; i < priv->tx_ring_num; i++) {
ring = priv->tx_ring[i];
if (ring->blocked &&
ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
goto reset;
}
return;
reset:
priv->port_stats.tx_timeout++;
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);
//for (i = 0; i < priv->tx_ring_num; i++)
// netdev_tx_reset_queue(priv->tx_ring[i]->tx_queue);
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_is_slave(mdev->dev))
if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
en_dbg(HW, priv, "Failed dumping statistics\n");
memset(&priv->pstats, 0, sizeof(priv->pstats));
memset(&priv->pkstats, 0, sizeof(priv->pkstats));
memset(&priv->port_stats, 0, sizeof(priv->port_stats));
memset(&priv->vport_stats, 0, sizeof(priv->vport_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 void mlx4_en_open(void* arg)
{
struct mlx4_en_priv *priv;
struct mlx4_en_dev *mdev;
struct net_device *dev;
int err = 0;
priv = arg;
mdev = priv->mdev;
dev = priv->dev;
mutex_lock(&mdev->state_lock);
if (!mdev->device_up) {
en_err(priv, "Cannot open - device down/disabled\n");
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;
}
void mlx4_en_free_resources(struct mlx4_en_priv *priv)
{
int i;
#ifdef CONFIG_RFS_ACCEL
if (priv->dev->rx_cpu_rmap) {
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]);
}
if (priv->sysctl)
sysctl_ctx_free(&priv->stat_ctx);
}
int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
{
struct mlx4_en_port_profile *prof = priv->prof;
int i;
int node = 0;
/* 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, node))
goto err;
if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
prof->rx_ring_size, node))
goto 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, node))
goto err;
if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
prof->tx_ring_size, TXBB_SIZE, node, i))
goto err;
}
#ifdef CONFIG_RFS_ACCEL
priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->rx_ring_num);
if (!priv->dev->rx_cpu_rmap)
goto err;
#endif
/* Re-create stat sysctls in case the number of rings changed. */
mlx4_en_sysctl_stat(priv);
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]);
}
priv->port_up = false;
return -ENOMEM;
}
struct en_port_attribute {
struct attribute attr;
ssize_t (*show)(struct en_port *, struct en_port_attribute *, char *buf);
ssize_t (*store)(struct en_port *, struct en_port_attribute *, char *buf, size_t count);
};
#define PORT_ATTR_RO(_name) \
struct en_port_attribute en_port_attr_##_name = __ATTR_RO(_name)
#define EN_PORT_ATTR(_name, _mode, _show, _store) \
struct en_port_attribute en_port_attr_##_name = __ATTR(_name, _mode, _show, _store)
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);
if (priv->vlan_attach != NULL)
EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
if (priv->vlan_detach != NULL)
EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
/* Unregister device - this will close the port if it was up */
if (priv->registered)
ether_ifdetach(dev);
if (priv->allocated)
mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
mutex_lock(&mdev->state_lock);
mlx4_en_stop_port(dev);
mutex_unlock(&mdev->state_lock);
cancel_delayed_work(&priv->stats_task);
cancel_delayed_work(&priv->service_task);
/* flush any pending task for this netdev */
flush_workqueue(mdev->workqueue);
callout_drain(&priv->watchdog_timer);
/* 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);
/* freeing the sysctl conf cannot be called from within mlx4_en_free_resources */
if (priv->sysctl)
sysctl_ctx_free(&priv->conf_ctx);
kfree(priv->tx_ring);
kfree(priv->tx_cq);
kfree(priv);
if_free(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:%u new:%u\n",
(unsigned)dev->if_mtu, (unsigned)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;
}
mutex_lock(&mdev->state_lock);
dev->if_mtu = new_mtu;
if (dev->if_drv_flags & IFF_DRV_RUNNING) {
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);
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_calc_media(struct mlx4_en_priv *priv)
{
int trans_type;
int active;
active = IFM_ETHER;
if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
return (active);
/*
* [ShaharK] mlx4_en_QUERY_PORT sleeps and cannot be called under a
* non-sleepable lock.
* I moved it to the periodic mlx4_en_do_get_stats.
if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
return (active);
*/
active |= IFM_FDX;
trans_type = priv->port_state.transciver;
/* XXX I don't know all of the transceiver values. */
switch (priv->port_state.link_speed) {
case 1000:
active |= IFM_1000_T;
break;
case 10000:
if (trans_type > 0 && trans_type <= 0xC)
active |= IFM_10G_SR;
else if (trans_type == 0x80 || trans_type == 0)
active |= IFM_10G_CX4;
break;
case 40000:
active |= IFM_40G_CR4;
break;
}
if (priv->prof->tx_pause)
active |= IFM_ETH_TXPAUSE;
if (priv->prof->rx_pause)
active |= IFM_ETH_RXPAUSE;
return (active);
}
static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
{
struct mlx4_en_priv *priv;
priv = dev->if_softc;
ifmr->ifm_status = IFM_AVALID;
if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
ifmr->ifm_status |= IFM_ACTIVE;
ifmr->ifm_active = mlx4_en_calc_media(priv);
return;
}
static int mlx4_en_media_change(struct ifnet *dev)
{
struct mlx4_en_priv *priv;
struct ifmedia *ifm;
int rxpause;
int txpause;
int error;
priv = dev->if_softc;
ifm = &priv->media;
rxpause = txpause = 0;
error = 0;
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return (EINVAL);
switch (IFM_SUBTYPE(ifm->ifm_media)) {
case IFM_AUTO:
break;
case IFM_10G_SR:
case IFM_10G_CX4:
case IFM_1000_T:
case IFM_40G_CR4:
if ((IFM_SUBTYPE(ifm->ifm_media)
== IFM_SUBTYPE(mlx4_en_calc_media(priv)))
&& (ifm->ifm_media & IFM_FDX))
break;
/* Fallthrough */
default:
printf("%s: Only auto media type\n", if_name(dev));
return (EINVAL);
}
/* Allow user to set/clear pause */
if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
rxpause = 1;
if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
txpause = 1;
if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
priv->prof->tx_pause = txpause;
priv->prof->rx_pause = rxpause;
error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
priv->prof->tx_ppp, priv->prof->rx_pause,
priv->prof->rx_ppp);
}
return (error);
}
static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
{
struct mlx4_en_priv *priv;
struct mlx4_en_dev *mdev;
struct ifreq *ifr;
int error;
int mask;
error = 0;
mask = 0;
priv = dev->if_softc;
mdev = priv->mdev;
ifr = (struct ifreq *) data;
switch (command) {
case SIOCSIFMTU:
error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
break;
case SIOCSIFFLAGS:
if (dev->if_flags & IFF_UP) {
if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) {
mutex_lock(&mdev->state_lock);
mlx4_en_start_port(dev);
mutex_unlock(&mdev->state_lock);
} else {
mlx4_en_set_rx_mode(dev);
}
} else {
mutex_lock(&mdev->state_lock);
if (dev->if_drv_flags & IFF_DRV_RUNNING) {
mlx4_en_stop_port(dev);
if_link_state_change(dev, LINK_STATE_DOWN);
}
mutex_unlock(&mdev->state_lock);
}
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
mlx4_en_set_rx_mode(dev);
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(dev, ifr, &priv->media, command);
break;
case SIOCSIFCAP:
mutex_lock(&mdev->state_lock);
mask = ifr->ifr_reqcap ^ dev->if_capenable;
if (mask & IFCAP_HWCSUM)
dev->if_capenable ^= IFCAP_HWCSUM;
if (mask & IFCAP_TSO4)
dev->if_capenable ^= IFCAP_TSO4;
if (mask & IFCAP_TSO6)
dev->if_capenable ^= IFCAP_TSO6;
if (mask & IFCAP_LRO)
dev->if_capenable ^= IFCAP_LRO;
if (mask & IFCAP_VLAN_HWTAGGING)
dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
if (mask & IFCAP_VLAN_HWFILTER)
dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
if (mask & IFCAP_WOL_MAGIC)
dev->if_capenable ^= IFCAP_WOL_MAGIC;
if (dev->if_drv_flags & IFF_DRV_RUNNING)
mlx4_en_start_port(dev);
mutex_unlock(&mdev->state_lock);
VLAN_CAPABILITIES(dev);
break;
case SIOCGI2C: {
struct ifi2creq i2c;
error = copyin(ifr->ifr_data, &i2c, sizeof(i2c));
if (error)
break;
if (i2c.len > sizeof(i2c.data)) {
error = EINVAL;
break;
}
/*
* Note that we ignore i2c.addr here. The driver hardcodes
* the address to 0x50, while standard expects it to be 0xA0.
*/
error = mlx4_get_module_info(mdev->dev, priv->port,
i2c.offset, i2c.len, i2c.data);
if (error < 0) {
error = -error;
break;
}
error = copyout(&i2c, ifr->ifr_data, sizeof(i2c));
break;
}
default:
error = ether_ioctl(dev, command, data);
break;
}
return (error);
}
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;
uint8_t dev_addr[ETHER_ADDR_LEN];
int err;
int i;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
dev = priv->dev = if_alloc(IFT_ETHER);
if (dev == NULL) {
en_err(priv, "Net device allocation failed\n");
kfree(priv);
return -ENOMEM;
}
dev->if_softc = priv;
if_initname(dev, "mlxen", atomic_fetchadd_int(&mlx4_en_unit, 1));
dev->if_mtu = ETHERMTU;
dev->if_init = mlx4_en_open;
dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
dev->if_ioctl = mlx4_en_ioctl;
dev->if_transmit = mlx4_en_transmit;
dev->if_qflush = mlx4_en_qflush;
dev->if_snd.ifq_maxlen = prof->tx_ring_size;
/*
* Initialize driver private data
*/
priv->counter_index = 0xff;
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);
callout_init(&priv->watchdog_timer, 1);
#ifdef CONFIG_RFS_ACCEL
INIT_LIST_HEAD(&priv->filters);
spin_lock_init(&priv->filters_lock);
#endif
priv->msg_enable = MLX4_EN_MSG_LEVEL;
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 = kcalloc(MAX_TX_RINGS,
sizeof(struct mlx4_en_tx_ring *), GFP_KERNEL);
if (!priv->tx_ring) {
err = -ENOMEM;
goto out;
}
priv->tx_cq = kcalloc(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->last_ifq_jiffies = 0;
priv->if_counters_rx_errors = 0;
priv->if_counters_rx_no_buffer = 0;
#ifdef CONFIG_MLX4_EN_DCB
if (!mlx4_is_slave(priv->mdev->dev)) {
priv->dcbx_cap = DCB_CAP_DCBX_HOST;
priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
} else {
en_info(priv, "QoS disabled - no HW support\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];
priv->mac = mdev->dev->caps.def_mac[priv->port];
if (ILLEGAL_MAC(priv->mac)) {
#if BITS_PER_LONG == 64
en_err(priv, "Port: %d, invalid mac burned: 0x%lx, quiting\n",
priv->port, priv->mac);
#elif BITS_PER_LONG == 32
en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
priv->port, priv->mac);
#endif
err = -EINVAL;
goto out;
}
priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
DS_SIZE);
mlx4_en_sysctl_conf(priv);
err = mlx4_en_alloc_resources(priv);
if (err)
goto out;
/* 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;
/*
* Set driver features
*/
dev->if_capabilities |= IFCAP_RXCSUM | IFCAP_TXCSUM;
dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
dev->if_capabilities |= IFCAP_LRO;
if (mdev->LSO_support)
dev->if_capabilities |= IFCAP_TSO4 | IFCAP_TSO6 | IFCAP_VLAN_HWTSO;
/* set TSO limits so that we don't have to drop TX packets */
dev->if_hw_tsomax = 65536 - (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN);
dev->if_hw_tsomaxsegcount = 16;
dev->if_hw_tsomaxsegsize = 65536; /* XXX can do up to 4GByte */
dev->if_capenable = dev->if_capabilities;
dev->if_hwassist = 0;
if (dev->if_capenable & (IFCAP_TSO4 | IFCAP_TSO6))
dev->if_hwassist |= CSUM_TSO;
if (dev->if_capenable & IFCAP_TXCSUM)
dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
/* Register for VLAN events */
priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
mdev->pndev[priv->port] = dev;
priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
mlx4_en_set_default_moderation(priv);
/* Set default MAC */
for (i = 0; i < ETHER_ADDR_LEN; i++)
dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
ether_ifattach(dev, dev_addr);
if_link_state_change(dev, LINK_STATE_DOWN);
ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
mlx4_en_media_change, mlx4_en_media_status);
ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_40G_CR4, 0, NULL);
ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
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);
priv->rx_mb_size = dev->if_mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
err = mlx4_SET_PORT_general(mdev->dev, priv->port,
priv->rx_mb_size,
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;
}
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;
}
static int mlx4_en_set_ring_size(struct net_device *dev,
int rx_size, int tx_size)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
int port_up = 0;
int err = 0;
rx_size = roundup_pow_of_two(rx_size);
rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
tx_size = roundup_pow_of_two(tx_size);
tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
if (rx_size == (priv->port_up ?
priv->rx_ring[0]->actual_size : priv->rx_ring[0]->size) &&
tx_size == priv->tx_ring[0]->size)
return 0;
mutex_lock(&mdev->state_lock);
if (priv->port_up) {
port_up = 1;
mlx4_en_stop_port(dev);
}
mlx4_en_free_resources(priv);
priv->prof->tx_ring_size = tx_size;
priv->prof->rx_ring_size = rx_size;
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);
return err;
}
static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
{
struct mlx4_en_priv *priv;
int size;
int error;
priv = arg1;
size = priv->prof->rx_ring_size;
error = sysctl_handle_int(oidp, &size, 0, req);
if (error || !req->newptr)
return (error);
error = -mlx4_en_set_ring_size(priv->dev, size,
priv->prof->tx_ring_size);
return (error);
}
static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
{
struct mlx4_en_priv *priv;
int size;
int error;
priv = arg1;
size = priv->prof->tx_ring_size;
error = sysctl_handle_int(oidp, &size, 0, req);
if (error || !req->newptr)
return (error);
error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
size);
return (error);
}
static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
{
struct mlx4_en_priv *priv;
int ppp;
int error;
priv = arg1;
ppp = priv->prof->tx_ppp;
error = sysctl_handle_int(oidp, &ppp, 0, req);
if (error || !req->newptr)
return (error);
if (ppp > 0xff || ppp < 0)
return (-EINVAL);
priv->prof->tx_ppp = ppp;
error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
priv->rx_mb_size + ETHER_CRC_LEN,
priv->prof->tx_pause,
priv->prof->tx_ppp,
priv->prof->rx_pause,
priv->prof->rx_ppp);
return (error);
}
static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
{
struct mlx4_en_priv *priv;
struct mlx4_en_dev *mdev;
int ppp;
int error;
int port_up;
port_up = 0;
priv = arg1;
mdev = priv->mdev;
ppp = priv->prof->rx_ppp;
error = sysctl_handle_int(oidp, &ppp, 0, req);
if (error || !req->newptr)
return (error);
if (ppp > 0xff || ppp < 0)
return (-EINVAL);
/* See if we have to change the number of tx queues. */
if (!ppp != !priv->prof->rx_ppp) {
mutex_lock(&mdev->state_lock);
if (priv->port_up) {
port_up = 1;
mlx4_en_stop_port(priv->dev);
}
mlx4_en_free_resources(priv);
priv->prof->rx_ppp = ppp;
error = -mlx4_en_alloc_resources(priv);
if (error)
en_err(priv, "Failed reallocating port resources\n");
if (error == 0 && port_up) {
error = -mlx4_en_start_port(priv->dev);
if (error)
en_err(priv, "Failed starting port\n");
}
mutex_unlock(&mdev->state_lock);
return (error);
}
priv->prof->rx_ppp = ppp;
error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
priv->rx_mb_size + ETHER_CRC_LEN,
priv->prof->tx_pause,
priv->prof->tx_ppp,
priv->prof->rx_pause,
priv->prof->rx_ppp);
return (error);
}
static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
{
struct net_device *dev;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *node;
struct sysctl_oid_list *node_list;
struct sysctl_oid *coal;
struct sysctl_oid_list *coal_list;
const char *pnameunit;
dev = priv->dev;
ctx = &priv->conf_ctx;
pnameunit = device_get_nameunit(priv->mdev->pdev->dev.bsddev);
sysctl_ctx_init(ctx);
priv->sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
"conf", CTLFLAG_RD, NULL, "Configuration");
node_list = SYSCTL_CHILDREN(node);
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
CTLFLAG_RW, &priv->msg_enable, 0,
"Driver message enable bitfield");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
CTLFLAG_RD, &priv->rx_ring_num, 0,
"Number of receive rings");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
CTLFLAG_RD, &priv->tx_ring_num, 0,
"Number of transmit rings");
SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
mlx4_en_set_rx_ring_size, "I", "Receive ring size");
SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "port_num",
CTLFLAG_RD, &priv->port, 0,
"Port Number");
SYSCTL_ADD_STRING(ctx, node_list, OID_AUTO, "device_name",
CTLFLAG_RD, __DECONST(void *, pnameunit), 0,
"PCI device name");
/* Add coalescer configuration. */
coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
"coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
coal_list = SYSCTL_CHILDREN(node);
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
CTLFLAG_RW, &priv->pkt_rate_low, 0,
"Packets per-second for minimum delay");
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
CTLFLAG_RW, &priv->rx_usecs_low, 0,
"Minimum RX delay in micro-seconds");
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
CTLFLAG_RW, &priv->pkt_rate_high, 0,
"Packets per-second for maximum delay");
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
CTLFLAG_RW, &priv->rx_usecs_high, 0,
"Maximum RX delay in micro-seconds");
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
CTLFLAG_RW, &priv->sample_interval, 0,
"adaptive frequency in units of HZ ticks");
SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
"Enable adaptive rx coalescing");
}
static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
{
struct net_device *dev;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *node;
struct sysctl_oid_list *node_list;
struct sysctl_oid *ring_node;
struct sysctl_oid_list *ring_list;
struct mlx4_en_tx_ring *tx_ring;
struct mlx4_en_rx_ring *rx_ring;
char namebuf[128];
int i;
dev = priv->dev;
ctx = &priv->stat_ctx;
sysctl_ctx_init(ctx);
node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->sysctl), OID_AUTO,
"stat", CTLFLAG_RD, NULL, "Statistics");
node_list = SYSCTL_CHILDREN(node);
#ifdef MLX4_EN_PERF_STAT
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
&priv->pstats.tx_poll, "TX Poll calls");
SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
&priv->pstats.tx_pktsz_avg, "TX average packet size");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
&priv->pstats.inflight_avg, "TX average packets in-flight");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
&priv->pstats.tx_coal_avg, "TX average coalesced completions");
SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
&priv->pstats.rx_coal_avg, "RX average coalesced completions");
#endif
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
&priv->port_stats.tso_packets, "TSO packets sent");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
&priv->port_stats.queue_stopped, "Queue full");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
&priv->port_stats.wake_queue, "Queue resumed after full");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
&priv->port_stats.tx_timeout, "Transmit timeouts");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
&priv->port_stats.rx_alloc_failed, "RX failed to allocate mbuf");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
&priv->port_stats.rx_chksum_good, "RX checksum offload success");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
&priv->port_stats.rx_chksum_none, "RX without checksum offload");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_chksum_offload",
CTLFLAG_RD, &priv->port_stats.tx_chksum_offload,
"TX checksum offloads");
/* Could strdup the names and add in a loop. This is simpler. */
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
&priv->pkstats.rx_bytes, "RX Bytes");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
&priv->pkstats.rx_packets, "RX packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_multicast_packets", CTLFLAG_RD,
&priv->pkstats.rx_multicast_packets, "RX Multicast Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_broadcast_packets", CTLFLAG_RD,
&priv->pkstats.rx_broadcast_packets, "RX Broadcast Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_errors", CTLFLAG_RD,
&priv->pkstats.rx_errors, "RX Errors");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_dropped", CTLFLAG_RD,
&priv->pkstats.rx_dropped, "RX Dropped");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_length_errors", CTLFLAG_RD,
&priv->pkstats.rx_length_errors, "RX Length Errors");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_over_errors", CTLFLAG_RD,
&priv->pkstats.rx_over_errors, "RX Over Errors");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_crc_errors", CTLFLAG_RD,
&priv->pkstats.rx_crc_errors, "RX CRC Errors");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_jabbers", CTLFLAG_RD,
&priv->pkstats.rx_jabbers, "RX Jabbers");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_in_range_length_error", CTLFLAG_RD,
&priv->pkstats.rx_in_range_length_error, "RX IN_Range Length Error");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_out_range_length_error",
CTLFLAG_RD, &priv->pkstats.rx_out_range_length_error,
"RX Out Range Length Error");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_lt_64_bytes_packets", CTLFLAG_RD,
&priv->pkstats.rx_lt_64_bytes_packets, "RX Lt 64 Bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_127_bytes_packets", CTLFLAG_RD,
&priv->pkstats.rx_127_bytes_packets, "RX 127 bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_255_bytes_packets", CTLFLAG_RD,
&priv->pkstats.rx_255_bytes_packets, "RX 255 bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_511_bytes_packets", CTLFLAG_RD,
&priv->pkstats.rx_511_bytes_packets, "RX 511 bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1023_bytes_packets", CTLFLAG_RD,
&priv->pkstats.rx_1023_bytes_packets, "RX 1023 bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1518_bytes_packets", CTLFLAG_RD,
&priv->pkstats.rx_1518_bytes_packets, "RX 1518 bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1522_bytes_packets", CTLFLAG_RD,
&priv->pkstats.rx_1522_bytes_packets, "RX 1522 bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1548_bytes_packets", CTLFLAG_RD,
&priv->pkstats.rx_1548_bytes_packets, "RX 1548 bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_gt_1548_bytes_packets", CTLFLAG_RD,
&priv->pkstats.rx_gt_1548_bytes_packets,
"RX Greater Then 1548 bytes Packets");
struct mlx4_en_pkt_stats {
unsigned long tx_packets;
unsigned long tx_bytes;
unsigned long tx_multicast_packets;
unsigned long tx_broadcast_packets;
unsigned long tx_errors;
unsigned long tx_dropped;
unsigned long tx_lt_64_bytes_packets;
unsigned long tx_127_bytes_packets;
unsigned long tx_255_bytes_packets;
unsigned long tx_511_bytes_packets;
unsigned long tx_1023_bytes_packets;
unsigned long tx_1518_bytes_packets;
unsigned long tx_1522_bytes_packets;
unsigned long tx_1548_bytes_packets;
unsigned long tx_gt_1548_bytes_packets;
unsigned long rx_prio[NUM_PRIORITIES][NUM_PRIORITY_STATS];
unsigned long tx_prio[NUM_PRIORITIES][NUM_PRIORITY_STATS];
#define NUM_PKT_STATS 72
};
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
&priv->pkstats.tx_packets, "TX packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
&priv->pkstats.tx_packets, "TX Bytes");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_multicast_packets", CTLFLAG_RD,
&priv->pkstats.tx_multicast_packets, "TX Multicast Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_broadcast_packets", CTLFLAG_RD,
&priv->pkstats.tx_broadcast_packets, "TX Broadcast Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_errors", CTLFLAG_RD,
&priv->pkstats.tx_errors, "TX Errors");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_dropped", CTLFLAG_RD,
&priv->pkstats.tx_dropped, "TX Dropped");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_lt_64_bytes_packets", CTLFLAG_RD,
&priv->pkstats.tx_lt_64_bytes_packets, "TX Less Then 64 Bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_127_bytes_packets", CTLFLAG_RD,
&priv->pkstats.tx_127_bytes_packets, "TX 127 Bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_255_bytes_packets", CTLFLAG_RD,
&priv->pkstats.tx_255_bytes_packets, "TX 255 Bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_511_bytes_packets", CTLFLAG_RD,
&priv->pkstats.tx_511_bytes_packets, "TX 511 Bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1023_bytes_packets", CTLFLAG_RD,
&priv->pkstats.tx_1023_bytes_packets, "TX 1023 Bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1518_bytes_packets", CTLFLAG_RD,
&priv->pkstats.tx_1518_bytes_packets, "TX 1518 Bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1522_bytes_packets", CTLFLAG_RD,
&priv->pkstats.tx_1522_bytes_packets, "TX 1522 Bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1548_bytes_packets", CTLFLAG_RD,
&priv->pkstats.tx_1548_bytes_packets, "TX 1548 Bytes Packets");
SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_gt_1548_bytes_packets", CTLFLAG_RD,
&priv->pkstats.tx_gt_1548_bytes_packets,
"TX Greater Then 1548 Bytes Packets");
for (i = 0; i < priv->tx_ring_num; i++) {
tx_ring = priv->tx_ring[i];
snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
CTLFLAG_RD, NULL, "TX Ring");
ring_list = SYSCTL_CHILDREN(ring_node);
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
CTLFLAG_RD, &tx_ring->packets, "TX packets");
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
CTLFLAG_RD, &tx_ring->bytes, "TX bytes");
}
for (i = 0; i < priv->rx_ring_num; i++) {
rx_ring = priv->rx_ring[i];
snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
CTLFLAG_RD, NULL, "RX Ring");
ring_list = SYSCTL_CHILDREN(ring_node);
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
CTLFLAG_RD, &rx_ring->packets, "RX packets");
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
CTLFLAG_RD, &rx_ring->bytes, "RX bytes");
SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
CTLFLAG_RD, &rx_ring->errors, "RX soft errors");
}
}
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