mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-08 21:26:39 +07:00
dec1e90e8c
This patch aims to remove struct bonding's first_slave and struct slave's next and prev pointers, and replace them with the standard Linux list API. The old macros are converted to list API as well and some new primitives are available now. The checks if there're slaves that used slave_cnt have been replaced by the list_empty macro. Also a few small style fixes, changing longest -> shortest line in local variable declarations, leaving an empty line before return and removing unnecessary brackets. This is the first step to gradual RCU conversion. Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
293 lines
7.4 KiB
C
293 lines
7.4 KiB
C
#include <linux/proc_fs.h>
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#include <linux/export.h>
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#include <net/net_namespace.h>
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#include <net/netns/generic.h>
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#include "bonding.h"
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static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos)
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__acquires(RCU)
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__acquires(&bond->lock)
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{
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struct bonding *bond = seq->private;
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loff_t off = 0;
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struct slave *slave;
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/* make sure the bond won't be taken away */
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rcu_read_lock();
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read_lock(&bond->lock);
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if (*pos == 0)
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return SEQ_START_TOKEN;
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bond_for_each_slave(bond, slave)
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if (++off == *pos)
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return slave;
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return NULL;
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}
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static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct bonding *bond = seq->private;
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struct slave *slave = v;
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++*pos;
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if (v == SEQ_START_TOKEN)
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return bond_first_slave(bond);
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if (bond_is_last_slave(bond, slave))
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return NULL;
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slave = bond_next_slave(bond, slave);
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return slave;
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}
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static void bond_info_seq_stop(struct seq_file *seq, void *v)
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__releases(&bond->lock)
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__releases(RCU)
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{
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struct bonding *bond = seq->private;
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read_unlock(&bond->lock);
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rcu_read_unlock();
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}
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static void bond_info_show_master(struct seq_file *seq)
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{
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struct bonding *bond = seq->private;
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struct slave *curr;
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int i;
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read_lock(&bond->curr_slave_lock);
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curr = bond->curr_active_slave;
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read_unlock(&bond->curr_slave_lock);
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seq_printf(seq, "Bonding Mode: %s",
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bond_mode_name(bond->params.mode));
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if (bond->params.mode == BOND_MODE_ACTIVEBACKUP &&
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bond->params.fail_over_mac)
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seq_printf(seq, " (fail_over_mac %s)",
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fail_over_mac_tbl[bond->params.fail_over_mac].modename);
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seq_printf(seq, "\n");
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if (bond->params.mode == BOND_MODE_XOR ||
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bond->params.mode == BOND_MODE_8023AD) {
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seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
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xmit_hashtype_tbl[bond->params.xmit_policy].modename,
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bond->params.xmit_policy);
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}
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if (USES_PRIMARY(bond->params.mode)) {
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seq_printf(seq, "Primary Slave: %s",
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(bond->primary_slave) ?
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bond->primary_slave->dev->name : "None");
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if (bond->primary_slave)
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seq_printf(seq, " (primary_reselect %s)",
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pri_reselect_tbl[bond->params.primary_reselect].modename);
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seq_printf(seq, "\nCurrently Active Slave: %s\n",
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(curr) ? curr->dev->name : "None");
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}
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seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
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"up" : "down");
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seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
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seq_printf(seq, "Up Delay (ms): %d\n",
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bond->params.updelay * bond->params.miimon);
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seq_printf(seq, "Down Delay (ms): %d\n",
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bond->params.downdelay * bond->params.miimon);
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/* ARP information */
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if (bond->params.arp_interval > 0) {
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int printed = 0;
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seq_printf(seq, "ARP Polling Interval (ms): %d\n",
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bond->params.arp_interval);
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seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
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for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
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if (!bond->params.arp_targets[i])
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break;
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if (printed)
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seq_printf(seq, ",");
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seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
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printed = 1;
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}
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seq_printf(seq, "\n");
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}
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if (bond->params.mode == BOND_MODE_8023AD) {
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struct ad_info ad_info;
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seq_puts(seq, "\n802.3ad info\n");
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seq_printf(seq, "LACP rate: %s\n",
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(bond->params.lacp_fast) ? "fast" : "slow");
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seq_printf(seq, "Min links: %d\n", bond->params.min_links);
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seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
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ad_select_tbl[bond->params.ad_select].modename);
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if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
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seq_printf(seq, "bond %s has no active aggregator\n",
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bond->dev->name);
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} else {
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seq_printf(seq, "Active Aggregator Info:\n");
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seq_printf(seq, "\tAggregator ID: %d\n",
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ad_info.aggregator_id);
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seq_printf(seq, "\tNumber of ports: %d\n",
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ad_info.ports);
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seq_printf(seq, "\tActor Key: %d\n",
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ad_info.actor_key);
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seq_printf(seq, "\tPartner Key: %d\n",
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ad_info.partner_key);
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seq_printf(seq, "\tPartner Mac Address: %pM\n",
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ad_info.partner_system);
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}
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}
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}
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static const char *bond_slave_link_status(s8 link)
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{
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static const char * const status[] = {
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[BOND_LINK_UP] = "up",
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[BOND_LINK_FAIL] = "going down",
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[BOND_LINK_DOWN] = "down",
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[BOND_LINK_BACK] = "going back",
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};
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return status[link];
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}
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static void bond_info_show_slave(struct seq_file *seq,
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const struct slave *slave)
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{
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struct bonding *bond = seq->private;
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seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
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seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));
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if (slave->speed == SPEED_UNKNOWN)
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seq_printf(seq, "Speed: %s\n", "Unknown");
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else
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seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
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if (slave->duplex == DUPLEX_UNKNOWN)
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seq_printf(seq, "Duplex: %s\n", "Unknown");
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else
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seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
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seq_printf(seq, "Link Failure Count: %u\n",
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slave->link_failure_count);
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seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr);
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if (bond->params.mode == BOND_MODE_8023AD) {
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const struct aggregator *agg
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= SLAVE_AD_INFO(slave).port.aggregator;
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if (agg)
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seq_printf(seq, "Aggregator ID: %d\n",
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agg->aggregator_identifier);
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else
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seq_puts(seq, "Aggregator ID: N/A\n");
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}
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seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
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}
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static int bond_info_seq_show(struct seq_file *seq, void *v)
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{
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if (v == SEQ_START_TOKEN) {
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seq_printf(seq, "%s\n", bond_version);
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bond_info_show_master(seq);
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} else
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bond_info_show_slave(seq, v);
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return 0;
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}
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static const struct seq_operations bond_info_seq_ops = {
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.start = bond_info_seq_start,
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.next = bond_info_seq_next,
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.stop = bond_info_seq_stop,
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.show = bond_info_seq_show,
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};
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static int bond_info_open(struct inode *inode, struct file *file)
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{
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struct seq_file *seq;
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int res;
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res = seq_open(file, &bond_info_seq_ops);
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if (!res) {
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/* recover the pointer buried in proc_dir_entry data */
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seq = file->private_data;
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seq->private = PDE_DATA(inode);
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}
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return res;
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}
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static const struct file_operations bond_info_fops = {
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.owner = THIS_MODULE,
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.open = bond_info_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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void bond_create_proc_entry(struct bonding *bond)
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{
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struct net_device *bond_dev = bond->dev;
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struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
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if (bn->proc_dir) {
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bond->proc_entry = proc_create_data(bond_dev->name,
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S_IRUGO, bn->proc_dir,
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&bond_info_fops, bond);
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if (bond->proc_entry == NULL)
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pr_warning("Warning: Cannot create /proc/net/%s/%s\n",
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DRV_NAME, bond_dev->name);
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else
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memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
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}
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}
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void bond_remove_proc_entry(struct bonding *bond)
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{
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struct net_device *bond_dev = bond->dev;
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struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
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if (bn->proc_dir && bond->proc_entry) {
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remove_proc_entry(bond->proc_file_name, bn->proc_dir);
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memset(bond->proc_file_name, 0, IFNAMSIZ);
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bond->proc_entry = NULL;
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}
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}
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/* Create the bonding directory under /proc/net, if doesn't exist yet.
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* Caller must hold rtnl_lock.
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*/
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void __net_init bond_create_proc_dir(struct bond_net *bn)
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{
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if (!bn->proc_dir) {
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bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
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if (!bn->proc_dir)
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pr_warning("Warning: cannot create /proc/net/%s\n",
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DRV_NAME);
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}
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}
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/* Destroy the bonding directory under /proc/net, if empty.
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* Caller must hold rtnl_lock.
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*/
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void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
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{
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if (bn->proc_dir) {
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remove_proc_entry(DRV_NAME, bn->net->proc_net);
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bn->proc_dir = NULL;
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}
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}
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