1955 lines
47 KiB
C
1955 lines
47 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright Gavin Shan, IBM Corporation 2016.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <net/ncsi.h>
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#include <net/net_namespace.h>
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#include <net/sock.h>
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#include <net/addrconf.h>
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#include <net/ipv6.h>
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#include <net/genetlink.h>
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#include "internal.h"
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#include "ncsi-pkt.h"
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#include "ncsi-netlink.h"
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LIST_HEAD(ncsi_dev_list);
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DEFINE_SPINLOCK(ncsi_dev_lock);
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bool ncsi_channel_has_link(struct ncsi_channel *channel)
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{
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return !!(channel->modes[NCSI_MODE_LINK].data[2] & 0x1);
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}
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bool ncsi_channel_is_last(struct ncsi_dev_priv *ndp,
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struct ncsi_channel *channel)
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{
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struct ncsi_package *np;
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struct ncsi_channel *nc;
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NCSI_FOR_EACH_PACKAGE(ndp, np)
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NCSI_FOR_EACH_CHANNEL(np, nc) {
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if (nc == channel)
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continue;
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if (nc->state == NCSI_CHANNEL_ACTIVE &&
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ncsi_channel_has_link(nc))
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return false;
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}
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return true;
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}
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static void ncsi_report_link(struct ncsi_dev_priv *ndp, bool force_down)
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{
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struct ncsi_dev *nd = &ndp->ndev;
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struct ncsi_package *np;
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struct ncsi_channel *nc;
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unsigned long flags;
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nd->state = ncsi_dev_state_functional;
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if (force_down) {
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nd->link_up = 0;
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goto report;
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}
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nd->link_up = 0;
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NCSI_FOR_EACH_PACKAGE(ndp, np) {
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NCSI_FOR_EACH_CHANNEL(np, nc) {
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spin_lock_irqsave(&nc->lock, flags);
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if (!list_empty(&nc->link) ||
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nc->state != NCSI_CHANNEL_ACTIVE) {
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spin_unlock_irqrestore(&nc->lock, flags);
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continue;
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}
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if (ncsi_channel_has_link(nc)) {
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spin_unlock_irqrestore(&nc->lock, flags);
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nd->link_up = 1;
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goto report;
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}
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spin_unlock_irqrestore(&nc->lock, flags);
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}
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}
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report:
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nd->handler(nd);
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}
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static void ncsi_channel_monitor(struct timer_list *t)
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{
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struct ncsi_channel *nc = from_timer(nc, t, monitor.timer);
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struct ncsi_package *np = nc->package;
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struct ncsi_dev_priv *ndp = np->ndp;
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struct ncsi_channel_mode *ncm;
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struct ncsi_cmd_arg nca;
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bool enabled, chained;
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unsigned int monitor_state;
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unsigned long flags;
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int state, ret;
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spin_lock_irqsave(&nc->lock, flags);
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state = nc->state;
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chained = !list_empty(&nc->link);
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enabled = nc->monitor.enabled;
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monitor_state = nc->monitor.state;
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spin_unlock_irqrestore(&nc->lock, flags);
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if (!enabled)
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return; /* expected race disabling timer */
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if (WARN_ON_ONCE(chained))
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goto bad_state;
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if (state != NCSI_CHANNEL_INACTIVE &&
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state != NCSI_CHANNEL_ACTIVE) {
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bad_state:
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netdev_warn(ndp->ndev.dev,
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"Bad NCSI monitor state channel %d 0x%x %s queue\n",
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nc->id, state, chained ? "on" : "off");
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spin_lock_irqsave(&nc->lock, flags);
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nc->monitor.enabled = false;
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spin_unlock_irqrestore(&nc->lock, flags);
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return;
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}
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switch (monitor_state) {
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case NCSI_CHANNEL_MONITOR_START:
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case NCSI_CHANNEL_MONITOR_RETRY:
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nca.ndp = ndp;
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nca.package = np->id;
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nca.channel = nc->id;
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nca.type = NCSI_PKT_CMD_GLS;
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nca.req_flags = 0;
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ret = ncsi_xmit_cmd(&nca);
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if (ret)
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netdev_err(ndp->ndev.dev, "Error %d sending GLS\n",
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ret);
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break;
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case NCSI_CHANNEL_MONITOR_WAIT ... NCSI_CHANNEL_MONITOR_WAIT_MAX:
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break;
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default:
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netdev_err(ndp->ndev.dev, "NCSI Channel %d timed out!\n",
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nc->id);
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ncsi_report_link(ndp, true);
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ndp->flags |= NCSI_DEV_RESHUFFLE;
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ncm = &nc->modes[NCSI_MODE_LINK];
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spin_lock_irqsave(&nc->lock, flags);
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nc->monitor.enabled = false;
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nc->state = NCSI_CHANNEL_INVISIBLE;
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ncm->data[2] &= ~0x1;
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spin_unlock_irqrestore(&nc->lock, flags);
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spin_lock_irqsave(&ndp->lock, flags);
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nc->state = NCSI_CHANNEL_ACTIVE;
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list_add_tail_rcu(&nc->link, &ndp->channel_queue);
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spin_unlock_irqrestore(&ndp->lock, flags);
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ncsi_process_next_channel(ndp);
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return;
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}
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spin_lock_irqsave(&nc->lock, flags);
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nc->monitor.state++;
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spin_unlock_irqrestore(&nc->lock, flags);
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mod_timer(&nc->monitor.timer, jiffies + HZ);
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}
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void ncsi_start_channel_monitor(struct ncsi_channel *nc)
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{
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unsigned long flags;
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spin_lock_irqsave(&nc->lock, flags);
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WARN_ON_ONCE(nc->monitor.enabled);
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nc->monitor.enabled = true;
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nc->monitor.state = NCSI_CHANNEL_MONITOR_START;
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spin_unlock_irqrestore(&nc->lock, flags);
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mod_timer(&nc->monitor.timer, jiffies + HZ);
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}
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void ncsi_stop_channel_monitor(struct ncsi_channel *nc)
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{
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unsigned long flags;
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spin_lock_irqsave(&nc->lock, flags);
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if (!nc->monitor.enabled) {
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spin_unlock_irqrestore(&nc->lock, flags);
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return;
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}
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nc->monitor.enabled = false;
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spin_unlock_irqrestore(&nc->lock, flags);
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del_timer_sync(&nc->monitor.timer);
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}
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struct ncsi_channel *ncsi_find_channel(struct ncsi_package *np,
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unsigned char id)
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{
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struct ncsi_channel *nc;
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NCSI_FOR_EACH_CHANNEL(np, nc) {
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if (nc->id == id)
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return nc;
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}
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return NULL;
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}
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struct ncsi_channel *ncsi_add_channel(struct ncsi_package *np, unsigned char id)
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{
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struct ncsi_channel *nc, *tmp;
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int index;
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unsigned long flags;
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nc = kzalloc(sizeof(*nc), GFP_ATOMIC);
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if (!nc)
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return NULL;
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nc->id = id;
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nc->package = np;
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nc->state = NCSI_CHANNEL_INACTIVE;
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nc->monitor.enabled = false;
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timer_setup(&nc->monitor.timer, ncsi_channel_monitor, 0);
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spin_lock_init(&nc->lock);
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INIT_LIST_HEAD(&nc->link);
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for (index = 0; index < NCSI_CAP_MAX; index++)
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nc->caps[index].index = index;
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for (index = 0; index < NCSI_MODE_MAX; index++)
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nc->modes[index].index = index;
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spin_lock_irqsave(&np->lock, flags);
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tmp = ncsi_find_channel(np, id);
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if (tmp) {
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spin_unlock_irqrestore(&np->lock, flags);
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kfree(nc);
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return tmp;
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}
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list_add_tail_rcu(&nc->node, &np->channels);
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np->channel_num++;
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spin_unlock_irqrestore(&np->lock, flags);
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return nc;
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}
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static void ncsi_remove_channel(struct ncsi_channel *nc)
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{
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struct ncsi_package *np = nc->package;
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unsigned long flags;
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spin_lock_irqsave(&nc->lock, flags);
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/* Release filters */
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kfree(nc->mac_filter.addrs);
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kfree(nc->vlan_filter.vids);
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nc->state = NCSI_CHANNEL_INACTIVE;
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spin_unlock_irqrestore(&nc->lock, flags);
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ncsi_stop_channel_monitor(nc);
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/* Remove and free channel */
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spin_lock_irqsave(&np->lock, flags);
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list_del_rcu(&nc->node);
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np->channel_num--;
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spin_unlock_irqrestore(&np->lock, flags);
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kfree(nc);
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}
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struct ncsi_package *ncsi_find_package(struct ncsi_dev_priv *ndp,
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unsigned char id)
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{
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struct ncsi_package *np;
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NCSI_FOR_EACH_PACKAGE(ndp, np) {
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if (np->id == id)
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return np;
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}
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return NULL;
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}
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struct ncsi_package *ncsi_add_package(struct ncsi_dev_priv *ndp,
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unsigned char id)
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{
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struct ncsi_package *np, *tmp;
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unsigned long flags;
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np = kzalloc(sizeof(*np), GFP_ATOMIC);
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if (!np)
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return NULL;
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np->id = id;
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np->ndp = ndp;
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spin_lock_init(&np->lock);
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INIT_LIST_HEAD(&np->channels);
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np->channel_whitelist = UINT_MAX;
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spin_lock_irqsave(&ndp->lock, flags);
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tmp = ncsi_find_package(ndp, id);
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if (tmp) {
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spin_unlock_irqrestore(&ndp->lock, flags);
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kfree(np);
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return tmp;
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}
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list_add_tail_rcu(&np->node, &ndp->packages);
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ndp->package_num++;
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spin_unlock_irqrestore(&ndp->lock, flags);
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return np;
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}
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void ncsi_remove_package(struct ncsi_package *np)
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{
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struct ncsi_dev_priv *ndp = np->ndp;
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struct ncsi_channel *nc, *tmp;
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unsigned long flags;
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/* Release all child channels */
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list_for_each_entry_safe(nc, tmp, &np->channels, node)
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ncsi_remove_channel(nc);
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/* Remove and free package */
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spin_lock_irqsave(&ndp->lock, flags);
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list_del_rcu(&np->node);
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ndp->package_num--;
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spin_unlock_irqrestore(&ndp->lock, flags);
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kfree(np);
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}
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void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
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unsigned char id,
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struct ncsi_package **np,
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struct ncsi_channel **nc)
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{
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struct ncsi_package *p;
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struct ncsi_channel *c;
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p = ncsi_find_package(ndp, NCSI_PACKAGE_INDEX(id));
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c = p ? ncsi_find_channel(p, NCSI_CHANNEL_INDEX(id)) : NULL;
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if (np)
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*np = p;
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if (nc)
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*nc = c;
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}
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/* For two consecutive NCSI commands, the packet IDs shouldn't
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* be same. Otherwise, the bogus response might be replied. So
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* the available IDs are allocated in round-robin fashion.
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*/
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struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp,
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unsigned int req_flags)
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{
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struct ncsi_request *nr = NULL;
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int i, limit = ARRAY_SIZE(ndp->requests);
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unsigned long flags;
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/* Check if there is one available request until the ceiling */
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spin_lock_irqsave(&ndp->lock, flags);
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for (i = ndp->request_id; i < limit; i++) {
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if (ndp->requests[i].used)
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continue;
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nr = &ndp->requests[i];
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nr->used = true;
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nr->flags = req_flags;
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ndp->request_id = i + 1;
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goto found;
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}
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/* Fail back to check from the starting cursor */
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for (i = NCSI_REQ_START_IDX; i < ndp->request_id; i++) {
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if (ndp->requests[i].used)
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continue;
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nr = &ndp->requests[i];
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nr->used = true;
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nr->flags = req_flags;
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ndp->request_id = i + 1;
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goto found;
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}
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found:
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spin_unlock_irqrestore(&ndp->lock, flags);
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return nr;
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}
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void ncsi_free_request(struct ncsi_request *nr)
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{
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struct ncsi_dev_priv *ndp = nr->ndp;
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struct sk_buff *cmd, *rsp;
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unsigned long flags;
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bool driven;
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if (nr->enabled) {
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nr->enabled = false;
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del_timer_sync(&nr->timer);
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}
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spin_lock_irqsave(&ndp->lock, flags);
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cmd = nr->cmd;
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rsp = nr->rsp;
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nr->cmd = NULL;
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nr->rsp = NULL;
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nr->used = false;
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driven = !!(nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN);
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spin_unlock_irqrestore(&ndp->lock, flags);
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if (driven && cmd && --ndp->pending_req_num == 0)
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schedule_work(&ndp->work);
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/* Release command and response */
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consume_skb(cmd);
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consume_skb(rsp);
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}
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struct ncsi_dev *ncsi_find_dev(struct net_device *dev)
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{
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struct ncsi_dev_priv *ndp;
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NCSI_FOR_EACH_DEV(ndp) {
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if (ndp->ndev.dev == dev)
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return &ndp->ndev;
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}
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return NULL;
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}
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static void ncsi_request_timeout(struct timer_list *t)
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{
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struct ncsi_request *nr = from_timer(nr, t, timer);
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struct ncsi_dev_priv *ndp = nr->ndp;
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struct ncsi_cmd_pkt *cmd;
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struct ncsi_package *np;
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struct ncsi_channel *nc;
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unsigned long flags;
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/* If the request already had associated response,
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* let the response handler to release it.
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*/
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spin_lock_irqsave(&ndp->lock, flags);
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nr->enabled = false;
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if (nr->rsp || !nr->cmd) {
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spin_unlock_irqrestore(&ndp->lock, flags);
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return;
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}
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spin_unlock_irqrestore(&ndp->lock, flags);
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if (nr->flags == NCSI_REQ_FLAG_NETLINK_DRIVEN) {
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if (nr->cmd) {
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/* Find the package */
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cmd = (struct ncsi_cmd_pkt *)
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skb_network_header(nr->cmd);
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ncsi_find_package_and_channel(ndp,
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cmd->cmd.common.channel,
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&np, &nc);
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ncsi_send_netlink_timeout(nr, np, nc);
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}
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}
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/* Release the request */
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ncsi_free_request(nr);
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}
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static void ncsi_suspend_channel(struct ncsi_dev_priv *ndp)
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{
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struct ncsi_dev *nd = &ndp->ndev;
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struct ncsi_package *np;
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struct ncsi_channel *nc, *tmp;
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struct ncsi_cmd_arg nca;
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unsigned long flags;
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int ret;
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np = ndp->active_package;
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nc = ndp->active_channel;
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nca.ndp = ndp;
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nca.req_flags = NCSI_REQ_FLAG_EVENT_DRIVEN;
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switch (nd->state) {
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case ncsi_dev_state_suspend:
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nd->state = ncsi_dev_state_suspend_select;
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fallthrough;
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case ncsi_dev_state_suspend_select:
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ndp->pending_req_num = 1;
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nca.type = NCSI_PKT_CMD_SP;
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nca.package = np->id;
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nca.channel = NCSI_RESERVED_CHANNEL;
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if (ndp->flags & NCSI_DEV_HWA)
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nca.bytes[0] = 0;
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else
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nca.bytes[0] = 1;
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/* To retrieve the last link states of channels in current
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* package when current active channel needs fail over to
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* another one. It means we will possibly select another
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* channel as next active one. The link states of channels
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* are most important factor of the selection. So we need
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* accurate link states. Unfortunately, the link states on
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* inactive channels can't be updated with LSC AEN in time.
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*/
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if (ndp->flags & NCSI_DEV_RESHUFFLE)
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nd->state = ncsi_dev_state_suspend_gls;
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else
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nd->state = ncsi_dev_state_suspend_dcnt;
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ret = ncsi_xmit_cmd(&nca);
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if (ret)
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goto error;
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break;
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case ncsi_dev_state_suspend_gls:
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ndp->pending_req_num = 1;
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nca.type = NCSI_PKT_CMD_GLS;
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nca.package = np->id;
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nca.channel = ndp->channel_probe_id;
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ret = ncsi_xmit_cmd(&nca);
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if (ret)
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goto error;
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ndp->channel_probe_id++;
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if (ndp->channel_probe_id == ndp->channel_count) {
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ndp->channel_probe_id = 0;
|
|
nd->state = ncsi_dev_state_suspend_dcnt;
|
|
}
|
|
|
|
break;
|
|
case ncsi_dev_state_suspend_dcnt:
|
|
ndp->pending_req_num = 1;
|
|
|
|
nca.type = NCSI_PKT_CMD_DCNT;
|
|
nca.package = np->id;
|
|
nca.channel = nc->id;
|
|
|
|
nd->state = ncsi_dev_state_suspend_dc;
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret)
|
|
goto error;
|
|
|
|
break;
|
|
case ncsi_dev_state_suspend_dc:
|
|
ndp->pending_req_num = 1;
|
|
|
|
nca.type = NCSI_PKT_CMD_DC;
|
|
nca.package = np->id;
|
|
nca.channel = nc->id;
|
|
nca.bytes[0] = 1;
|
|
|
|
nd->state = ncsi_dev_state_suspend_deselect;
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret)
|
|
goto error;
|
|
|
|
NCSI_FOR_EACH_CHANNEL(np, tmp) {
|
|
/* If there is another channel active on this package
|
|
* do not deselect the package.
|
|
*/
|
|
if (tmp != nc && tmp->state == NCSI_CHANNEL_ACTIVE) {
|
|
nd->state = ncsi_dev_state_suspend_done;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case ncsi_dev_state_suspend_deselect:
|
|
ndp->pending_req_num = 1;
|
|
|
|
nca.type = NCSI_PKT_CMD_DP;
|
|
nca.package = np->id;
|
|
nca.channel = NCSI_RESERVED_CHANNEL;
|
|
|
|
nd->state = ncsi_dev_state_suspend_done;
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret)
|
|
goto error;
|
|
|
|
break;
|
|
case ncsi_dev_state_suspend_done:
|
|
spin_lock_irqsave(&nc->lock, flags);
|
|
nc->state = NCSI_CHANNEL_INACTIVE;
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
if (ndp->flags & NCSI_DEV_RESET)
|
|
ncsi_reset_dev(nd);
|
|
else
|
|
ncsi_process_next_channel(ndp);
|
|
break;
|
|
default:
|
|
netdev_warn(nd->dev, "Wrong NCSI state 0x%x in suspend\n",
|
|
nd->state);
|
|
}
|
|
|
|
return;
|
|
error:
|
|
nd->state = ncsi_dev_state_functional;
|
|
}
|
|
|
|
/* Check the VLAN filter bitmap for a set filter, and construct a
|
|
* "Set VLAN Filter - Disable" packet if found.
|
|
*/
|
|
static int clear_one_vid(struct ncsi_dev_priv *ndp, struct ncsi_channel *nc,
|
|
struct ncsi_cmd_arg *nca)
|
|
{
|
|
struct ncsi_channel_vlan_filter *ncf;
|
|
unsigned long flags;
|
|
void *bitmap;
|
|
int index;
|
|
u16 vid;
|
|
|
|
ncf = &nc->vlan_filter;
|
|
bitmap = &ncf->bitmap;
|
|
|
|
spin_lock_irqsave(&nc->lock, flags);
|
|
index = find_first_bit(bitmap, ncf->n_vids);
|
|
if (index >= ncf->n_vids) {
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
return -1;
|
|
}
|
|
vid = ncf->vids[index];
|
|
|
|
clear_bit(index, bitmap);
|
|
ncf->vids[index] = 0;
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
|
|
nca->type = NCSI_PKT_CMD_SVF;
|
|
nca->words[1] = vid;
|
|
/* HW filter index starts at 1 */
|
|
nca->bytes[6] = index + 1;
|
|
nca->bytes[7] = 0x00;
|
|
return 0;
|
|
}
|
|
|
|
/* Find an outstanding VLAN tag and construct a "Set VLAN Filter - Enable"
|
|
* packet.
|
|
*/
|
|
static int set_one_vid(struct ncsi_dev_priv *ndp, struct ncsi_channel *nc,
|
|
struct ncsi_cmd_arg *nca)
|
|
{
|
|
struct ncsi_channel_vlan_filter *ncf;
|
|
struct vlan_vid *vlan = NULL;
|
|
unsigned long flags;
|
|
int i, index;
|
|
void *bitmap;
|
|
u16 vid;
|
|
|
|
if (list_empty(&ndp->vlan_vids))
|
|
return -1;
|
|
|
|
ncf = &nc->vlan_filter;
|
|
bitmap = &ncf->bitmap;
|
|
|
|
spin_lock_irqsave(&nc->lock, flags);
|
|
|
|
rcu_read_lock();
|
|
list_for_each_entry_rcu(vlan, &ndp->vlan_vids, list) {
|
|
vid = vlan->vid;
|
|
for (i = 0; i < ncf->n_vids; i++)
|
|
if (ncf->vids[i] == vid) {
|
|
vid = 0;
|
|
break;
|
|
}
|
|
if (vid)
|
|
break;
|
|
}
|
|
rcu_read_unlock();
|
|
|
|
if (!vid) {
|
|
/* No VLAN ID is not set */
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
return -1;
|
|
}
|
|
|
|
index = find_first_zero_bit(bitmap, ncf->n_vids);
|
|
if (index < 0 || index >= ncf->n_vids) {
|
|
netdev_err(ndp->ndev.dev,
|
|
"Channel %u already has all VLAN filters set\n",
|
|
nc->id);
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
return -1;
|
|
}
|
|
|
|
ncf->vids[index] = vid;
|
|
set_bit(index, bitmap);
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
|
|
nca->type = NCSI_PKT_CMD_SVF;
|
|
nca->words[1] = vid;
|
|
/* HW filter index starts at 1 */
|
|
nca->bytes[6] = index + 1;
|
|
nca->bytes[7] = 0x01;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ncsi_oem_keep_phy_intel(struct ncsi_cmd_arg *nca)
|
|
{
|
|
unsigned char data[NCSI_OEM_INTEL_CMD_KEEP_PHY_LEN];
|
|
int ret = 0;
|
|
|
|
nca->payload = NCSI_OEM_INTEL_CMD_KEEP_PHY_LEN;
|
|
|
|
memset(data, 0, NCSI_OEM_INTEL_CMD_KEEP_PHY_LEN);
|
|
*(unsigned int *)data = ntohl((__force __be32)NCSI_OEM_MFR_INTEL_ID);
|
|
|
|
data[4] = NCSI_OEM_INTEL_CMD_KEEP_PHY;
|
|
|
|
/* PHY Link up attribute */
|
|
data[6] = 0x1;
|
|
|
|
nca->data = data;
|
|
|
|
ret = ncsi_xmit_cmd(nca);
|
|
if (ret)
|
|
netdev_err(nca->ndp->ndev.dev,
|
|
"NCSI: Failed to transmit cmd 0x%x during configure\n",
|
|
nca->type);
|
|
return ret;
|
|
}
|
|
|
|
/* NCSI OEM Command APIs */
|
|
static int ncsi_oem_gma_handler_bcm(struct ncsi_cmd_arg *nca)
|
|
{
|
|
unsigned char data[NCSI_OEM_BCM_CMD_GMA_LEN];
|
|
int ret = 0;
|
|
|
|
nca->payload = NCSI_OEM_BCM_CMD_GMA_LEN;
|
|
|
|
memset(data, 0, NCSI_OEM_BCM_CMD_GMA_LEN);
|
|
*(unsigned int *)data = ntohl((__force __be32)NCSI_OEM_MFR_BCM_ID);
|
|
data[5] = NCSI_OEM_BCM_CMD_GMA;
|
|
|
|
nca->data = data;
|
|
|
|
ret = ncsi_xmit_cmd(nca);
|
|
if (ret)
|
|
netdev_err(nca->ndp->ndev.dev,
|
|
"NCSI: Failed to transmit cmd 0x%x during configure\n",
|
|
nca->type);
|
|
return ret;
|
|
}
|
|
|
|
static int ncsi_oem_gma_handler_mlx(struct ncsi_cmd_arg *nca)
|
|
{
|
|
union {
|
|
u8 data_u8[NCSI_OEM_MLX_CMD_GMA_LEN];
|
|
u32 data_u32[NCSI_OEM_MLX_CMD_GMA_LEN / sizeof(u32)];
|
|
} u;
|
|
int ret = 0;
|
|
|
|
nca->payload = NCSI_OEM_MLX_CMD_GMA_LEN;
|
|
|
|
memset(&u, 0, sizeof(u));
|
|
u.data_u32[0] = ntohl((__force __be32)NCSI_OEM_MFR_MLX_ID);
|
|
u.data_u8[5] = NCSI_OEM_MLX_CMD_GMA;
|
|
u.data_u8[6] = NCSI_OEM_MLX_CMD_GMA_PARAM;
|
|
|
|
nca->data = u.data_u8;
|
|
|
|
ret = ncsi_xmit_cmd(nca);
|
|
if (ret)
|
|
netdev_err(nca->ndp->ndev.dev,
|
|
"NCSI: Failed to transmit cmd 0x%x during configure\n",
|
|
nca->type);
|
|
return ret;
|
|
}
|
|
|
|
static int ncsi_oem_smaf_mlx(struct ncsi_cmd_arg *nca)
|
|
{
|
|
union {
|
|
u8 data_u8[NCSI_OEM_MLX_CMD_SMAF_LEN];
|
|
u32 data_u32[NCSI_OEM_MLX_CMD_SMAF_LEN / sizeof(u32)];
|
|
} u;
|
|
int ret = 0;
|
|
|
|
memset(&u, 0, sizeof(u));
|
|
u.data_u32[0] = ntohl((__force __be32)NCSI_OEM_MFR_MLX_ID);
|
|
u.data_u8[5] = NCSI_OEM_MLX_CMD_SMAF;
|
|
u.data_u8[6] = NCSI_OEM_MLX_CMD_SMAF_PARAM;
|
|
memcpy(&u.data_u8[MLX_SMAF_MAC_ADDR_OFFSET],
|
|
nca->ndp->ndev.dev->dev_addr, ETH_ALEN);
|
|
u.data_u8[MLX_SMAF_MED_SUPPORT_OFFSET] =
|
|
(MLX_MC_RBT_AVL | MLX_MC_RBT_SUPPORT);
|
|
|
|
nca->payload = NCSI_OEM_MLX_CMD_SMAF_LEN;
|
|
nca->data = u.data_u8;
|
|
|
|
ret = ncsi_xmit_cmd(nca);
|
|
if (ret)
|
|
netdev_err(nca->ndp->ndev.dev,
|
|
"NCSI: Failed to transmit cmd 0x%x during probe\n",
|
|
nca->type);
|
|
return ret;
|
|
}
|
|
|
|
static int ncsi_oem_gma_handler_intel(struct ncsi_cmd_arg *nca)
|
|
{
|
|
unsigned char data[NCSI_OEM_INTEL_CMD_GMA_LEN];
|
|
int ret = 0;
|
|
|
|
nca->payload = NCSI_OEM_INTEL_CMD_GMA_LEN;
|
|
|
|
memset(data, 0, NCSI_OEM_INTEL_CMD_GMA_LEN);
|
|
*(unsigned int *)data = ntohl((__force __be32)NCSI_OEM_MFR_INTEL_ID);
|
|
data[4] = NCSI_OEM_INTEL_CMD_GMA;
|
|
|
|
nca->data = data;
|
|
|
|
ret = ncsi_xmit_cmd(nca);
|
|
if (ret)
|
|
netdev_err(nca->ndp->ndev.dev,
|
|
"NCSI: Failed to transmit cmd 0x%x during configure\n",
|
|
nca->type);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* OEM Command handlers initialization */
|
|
static struct ncsi_oem_gma_handler {
|
|
unsigned int mfr_id;
|
|
int (*handler)(struct ncsi_cmd_arg *nca);
|
|
} ncsi_oem_gma_handlers[] = {
|
|
{ NCSI_OEM_MFR_BCM_ID, ncsi_oem_gma_handler_bcm },
|
|
{ NCSI_OEM_MFR_MLX_ID, ncsi_oem_gma_handler_mlx },
|
|
{ NCSI_OEM_MFR_INTEL_ID, ncsi_oem_gma_handler_intel }
|
|
};
|
|
|
|
static int ncsi_gma_handler(struct ncsi_cmd_arg *nca, unsigned int mf_id)
|
|
{
|
|
struct ncsi_oem_gma_handler *nch = NULL;
|
|
int i;
|
|
|
|
/* This function should only be called once, return if flag set */
|
|
if (nca->ndp->gma_flag == 1)
|
|
return -1;
|
|
|
|
/* Find gma handler for given manufacturer id */
|
|
for (i = 0; i < ARRAY_SIZE(ncsi_oem_gma_handlers); i++) {
|
|
if (ncsi_oem_gma_handlers[i].mfr_id == mf_id) {
|
|
if (ncsi_oem_gma_handlers[i].handler)
|
|
nch = &ncsi_oem_gma_handlers[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!nch) {
|
|
netdev_err(nca->ndp->ndev.dev,
|
|
"NCSI: No GMA handler available for MFR-ID (0x%x)\n",
|
|
mf_id);
|
|
return -1;
|
|
}
|
|
|
|
/* Get Mac address from NCSI device */
|
|
return nch->handler(nca);
|
|
}
|
|
|
|
/* Determine if a given channel from the channel_queue should be used for Tx */
|
|
static bool ncsi_channel_is_tx(struct ncsi_dev_priv *ndp,
|
|
struct ncsi_channel *nc)
|
|
{
|
|
struct ncsi_channel_mode *ncm;
|
|
struct ncsi_channel *channel;
|
|
struct ncsi_package *np;
|
|
|
|
/* Check if any other channel has Tx enabled; a channel may have already
|
|
* been configured and removed from the channel queue.
|
|
*/
|
|
NCSI_FOR_EACH_PACKAGE(ndp, np) {
|
|
if (!ndp->multi_package && np != nc->package)
|
|
continue;
|
|
NCSI_FOR_EACH_CHANNEL(np, channel) {
|
|
ncm = &channel->modes[NCSI_MODE_TX_ENABLE];
|
|
if (ncm->enable)
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* This channel is the preferred channel and has link */
|
|
list_for_each_entry_rcu(channel, &ndp->channel_queue, link) {
|
|
np = channel->package;
|
|
if (np->preferred_channel &&
|
|
ncsi_channel_has_link(np->preferred_channel)) {
|
|
return np->preferred_channel == nc;
|
|
}
|
|
}
|
|
|
|
/* This channel has link */
|
|
if (ncsi_channel_has_link(nc))
|
|
return true;
|
|
|
|
list_for_each_entry_rcu(channel, &ndp->channel_queue, link)
|
|
if (ncsi_channel_has_link(channel))
|
|
return false;
|
|
|
|
/* No other channel has link; default to this one */
|
|
return true;
|
|
}
|
|
|
|
/* Change the active Tx channel in a multi-channel setup */
|
|
int ncsi_update_tx_channel(struct ncsi_dev_priv *ndp,
|
|
struct ncsi_package *package,
|
|
struct ncsi_channel *disable,
|
|
struct ncsi_channel *enable)
|
|
{
|
|
struct ncsi_cmd_arg nca;
|
|
struct ncsi_channel *nc;
|
|
struct ncsi_package *np;
|
|
int ret = 0;
|
|
|
|
if (!package->multi_channel && !ndp->multi_package)
|
|
netdev_warn(ndp->ndev.dev,
|
|
"NCSI: Trying to update Tx channel in single-channel mode\n");
|
|
nca.ndp = ndp;
|
|
nca.req_flags = 0;
|
|
|
|
/* Find current channel with Tx enabled */
|
|
NCSI_FOR_EACH_PACKAGE(ndp, np) {
|
|
if (disable)
|
|
break;
|
|
if (!ndp->multi_package && np != package)
|
|
continue;
|
|
|
|
NCSI_FOR_EACH_CHANNEL(np, nc)
|
|
if (nc->modes[NCSI_MODE_TX_ENABLE].enable) {
|
|
disable = nc;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Find a suitable channel for Tx */
|
|
NCSI_FOR_EACH_PACKAGE(ndp, np) {
|
|
if (enable)
|
|
break;
|
|
if (!ndp->multi_package && np != package)
|
|
continue;
|
|
if (!(ndp->package_whitelist & (0x1 << np->id)))
|
|
continue;
|
|
|
|
if (np->preferred_channel &&
|
|
ncsi_channel_has_link(np->preferred_channel)) {
|
|
enable = np->preferred_channel;
|
|
break;
|
|
}
|
|
|
|
NCSI_FOR_EACH_CHANNEL(np, nc) {
|
|
if (!(np->channel_whitelist & 0x1 << nc->id))
|
|
continue;
|
|
if (nc->state != NCSI_CHANNEL_ACTIVE)
|
|
continue;
|
|
if (ncsi_channel_has_link(nc)) {
|
|
enable = nc;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (disable == enable)
|
|
return -1;
|
|
|
|
if (!enable)
|
|
return -1;
|
|
|
|
if (disable) {
|
|
nca.channel = disable->id;
|
|
nca.package = disable->package->id;
|
|
nca.type = NCSI_PKT_CMD_DCNT;
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret)
|
|
netdev_err(ndp->ndev.dev,
|
|
"Error %d sending DCNT\n",
|
|
ret);
|
|
}
|
|
|
|
netdev_info(ndp->ndev.dev, "NCSI: channel %u enables Tx\n", enable->id);
|
|
|
|
nca.channel = enable->id;
|
|
nca.package = enable->package->id;
|
|
nca.type = NCSI_PKT_CMD_ECNT;
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret)
|
|
netdev_err(ndp->ndev.dev,
|
|
"Error %d sending ECNT\n",
|
|
ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void ncsi_configure_channel(struct ncsi_dev_priv *ndp)
|
|
{
|
|
struct ncsi_package *np = ndp->active_package;
|
|
struct ncsi_channel *nc = ndp->active_channel;
|
|
struct ncsi_channel *hot_nc = NULL;
|
|
struct ncsi_dev *nd = &ndp->ndev;
|
|
struct net_device *dev = nd->dev;
|
|
struct ncsi_cmd_arg nca;
|
|
unsigned char index;
|
|
unsigned long flags;
|
|
int ret;
|
|
|
|
nca.ndp = ndp;
|
|
nca.req_flags = NCSI_REQ_FLAG_EVENT_DRIVEN;
|
|
switch (nd->state) {
|
|
case ncsi_dev_state_config:
|
|
case ncsi_dev_state_config_sp:
|
|
ndp->pending_req_num = 1;
|
|
|
|
/* Select the specific package */
|
|
nca.type = NCSI_PKT_CMD_SP;
|
|
if (ndp->flags & NCSI_DEV_HWA)
|
|
nca.bytes[0] = 0;
|
|
else
|
|
nca.bytes[0] = 1;
|
|
nca.package = np->id;
|
|
nca.channel = NCSI_RESERVED_CHANNEL;
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret) {
|
|
netdev_err(ndp->ndev.dev,
|
|
"NCSI: Failed to transmit CMD_SP\n");
|
|
goto error;
|
|
}
|
|
|
|
nd->state = ncsi_dev_state_config_cis;
|
|
break;
|
|
case ncsi_dev_state_config_cis:
|
|
ndp->pending_req_num = 1;
|
|
|
|
/* Clear initial state */
|
|
nca.type = NCSI_PKT_CMD_CIS;
|
|
nca.package = np->id;
|
|
nca.channel = nc->id;
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret) {
|
|
netdev_err(ndp->ndev.dev,
|
|
"NCSI: Failed to transmit CMD_CIS\n");
|
|
goto error;
|
|
}
|
|
|
|
nd->state = IS_ENABLED(CONFIG_NCSI_OEM_CMD_GET_MAC)
|
|
? ncsi_dev_state_config_oem_gma
|
|
: ncsi_dev_state_config_clear_vids;
|
|
break;
|
|
case ncsi_dev_state_config_oem_gma:
|
|
nd->state = ncsi_dev_state_config_clear_vids;
|
|
|
|
nca.type = NCSI_PKT_CMD_OEM;
|
|
nca.package = np->id;
|
|
nca.channel = nc->id;
|
|
ndp->pending_req_num = 1;
|
|
ret = ncsi_gma_handler(&nca, nc->version.mf_id);
|
|
if (ret < 0)
|
|
schedule_work(&ndp->work);
|
|
|
|
break;
|
|
case ncsi_dev_state_config_clear_vids:
|
|
case ncsi_dev_state_config_svf:
|
|
case ncsi_dev_state_config_ev:
|
|
case ncsi_dev_state_config_sma:
|
|
case ncsi_dev_state_config_ebf:
|
|
case ncsi_dev_state_config_dgmf:
|
|
case ncsi_dev_state_config_ecnt:
|
|
case ncsi_dev_state_config_ec:
|
|
case ncsi_dev_state_config_ae:
|
|
case ncsi_dev_state_config_gls:
|
|
ndp->pending_req_num = 1;
|
|
|
|
nca.package = np->id;
|
|
nca.channel = nc->id;
|
|
|
|
/* Clear any active filters on the channel before setting */
|
|
if (nd->state == ncsi_dev_state_config_clear_vids) {
|
|
ret = clear_one_vid(ndp, nc, &nca);
|
|
if (ret) {
|
|
nd->state = ncsi_dev_state_config_svf;
|
|
schedule_work(&ndp->work);
|
|
break;
|
|
}
|
|
/* Repeat */
|
|
nd->state = ncsi_dev_state_config_clear_vids;
|
|
/* Add known VLAN tags to the filter */
|
|
} else if (nd->state == ncsi_dev_state_config_svf) {
|
|
ret = set_one_vid(ndp, nc, &nca);
|
|
if (ret) {
|
|
nd->state = ncsi_dev_state_config_ev;
|
|
schedule_work(&ndp->work);
|
|
break;
|
|
}
|
|
/* Repeat */
|
|
nd->state = ncsi_dev_state_config_svf;
|
|
/* Enable/Disable the VLAN filter */
|
|
} else if (nd->state == ncsi_dev_state_config_ev) {
|
|
if (list_empty(&ndp->vlan_vids)) {
|
|
nca.type = NCSI_PKT_CMD_DV;
|
|
} else {
|
|
nca.type = NCSI_PKT_CMD_EV;
|
|
nca.bytes[3] = NCSI_CAP_VLAN_NO;
|
|
}
|
|
nd->state = ncsi_dev_state_config_sma;
|
|
} else if (nd->state == ncsi_dev_state_config_sma) {
|
|
/* Use first entry in unicast filter table. Note that
|
|
* the MAC filter table starts from entry 1 instead of
|
|
* 0.
|
|
*/
|
|
nca.type = NCSI_PKT_CMD_SMA;
|
|
for (index = 0; index < 6; index++)
|
|
nca.bytes[index] = dev->dev_addr[index];
|
|
nca.bytes[6] = 0x1;
|
|
nca.bytes[7] = 0x1;
|
|
nd->state = ncsi_dev_state_config_ebf;
|
|
} else if (nd->state == ncsi_dev_state_config_ebf) {
|
|
nca.type = NCSI_PKT_CMD_EBF;
|
|
nca.dwords[0] = nc->caps[NCSI_CAP_BC].cap;
|
|
/* if multicast global filtering is supported then
|
|
* disable it so that all multicast packet will be
|
|
* forwarded to management controller
|
|
*/
|
|
if (nc->caps[NCSI_CAP_GENERIC].cap &
|
|
NCSI_CAP_GENERIC_MC)
|
|
nd->state = ncsi_dev_state_config_dgmf;
|
|
else if (ncsi_channel_is_tx(ndp, nc))
|
|
nd->state = ncsi_dev_state_config_ecnt;
|
|
else
|
|
nd->state = ncsi_dev_state_config_ec;
|
|
} else if (nd->state == ncsi_dev_state_config_dgmf) {
|
|
nca.type = NCSI_PKT_CMD_DGMF;
|
|
if (ncsi_channel_is_tx(ndp, nc))
|
|
nd->state = ncsi_dev_state_config_ecnt;
|
|
else
|
|
nd->state = ncsi_dev_state_config_ec;
|
|
} else if (nd->state == ncsi_dev_state_config_ecnt) {
|
|
if (np->preferred_channel &&
|
|
nc != np->preferred_channel)
|
|
netdev_info(ndp->ndev.dev,
|
|
"NCSI: Tx failed over to channel %u\n",
|
|
nc->id);
|
|
nca.type = NCSI_PKT_CMD_ECNT;
|
|
nd->state = ncsi_dev_state_config_ec;
|
|
} else if (nd->state == ncsi_dev_state_config_ec) {
|
|
/* Enable AEN if it's supported */
|
|
nca.type = NCSI_PKT_CMD_EC;
|
|
nd->state = ncsi_dev_state_config_ae;
|
|
if (!(nc->caps[NCSI_CAP_AEN].cap & NCSI_CAP_AEN_MASK))
|
|
nd->state = ncsi_dev_state_config_gls;
|
|
} else if (nd->state == ncsi_dev_state_config_ae) {
|
|
nca.type = NCSI_PKT_CMD_AE;
|
|
nca.bytes[0] = 0;
|
|
nca.dwords[1] = nc->caps[NCSI_CAP_AEN].cap;
|
|
nd->state = ncsi_dev_state_config_gls;
|
|
} else if (nd->state == ncsi_dev_state_config_gls) {
|
|
nca.type = NCSI_PKT_CMD_GLS;
|
|
nd->state = ncsi_dev_state_config_done;
|
|
}
|
|
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret) {
|
|
netdev_err(ndp->ndev.dev,
|
|
"NCSI: Failed to transmit CMD %x\n",
|
|
nca.type);
|
|
goto error;
|
|
}
|
|
break;
|
|
case ncsi_dev_state_config_done:
|
|
netdev_dbg(ndp->ndev.dev, "NCSI: channel %u config done\n",
|
|
nc->id);
|
|
spin_lock_irqsave(&nc->lock, flags);
|
|
nc->state = NCSI_CHANNEL_ACTIVE;
|
|
|
|
if (ndp->flags & NCSI_DEV_RESET) {
|
|
/* A reset event happened during config, start it now */
|
|
nc->reconfigure_needed = false;
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
ncsi_reset_dev(nd);
|
|
break;
|
|
}
|
|
|
|
if (nc->reconfigure_needed) {
|
|
/* This channel's configuration has been updated
|
|
* part-way during the config state - start the
|
|
* channel configuration over
|
|
*/
|
|
nc->reconfigure_needed = false;
|
|
nc->state = NCSI_CHANNEL_INACTIVE;
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
|
|
spin_lock_irqsave(&ndp->lock, flags);
|
|
list_add_tail_rcu(&nc->link, &ndp->channel_queue);
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
|
|
netdev_dbg(dev, "Dirty NCSI channel state reset\n");
|
|
ncsi_process_next_channel(ndp);
|
|
break;
|
|
}
|
|
|
|
if (nc->modes[NCSI_MODE_LINK].data[2] & 0x1) {
|
|
hot_nc = nc;
|
|
} else {
|
|
hot_nc = NULL;
|
|
netdev_dbg(ndp->ndev.dev,
|
|
"NCSI: channel %u link down after config\n",
|
|
nc->id);
|
|
}
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
|
|
/* Update the hot channel */
|
|
spin_lock_irqsave(&ndp->lock, flags);
|
|
ndp->hot_channel = hot_nc;
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
|
|
ncsi_start_channel_monitor(nc);
|
|
ncsi_process_next_channel(ndp);
|
|
break;
|
|
default:
|
|
netdev_alert(dev, "Wrong NCSI state 0x%x in config\n",
|
|
nd->state);
|
|
}
|
|
|
|
return;
|
|
|
|
error:
|
|
ncsi_report_link(ndp, true);
|
|
}
|
|
|
|
static int ncsi_choose_active_channel(struct ncsi_dev_priv *ndp)
|
|
{
|
|
struct ncsi_channel *nc, *found, *hot_nc;
|
|
struct ncsi_channel_mode *ncm;
|
|
unsigned long flags, cflags;
|
|
struct ncsi_package *np;
|
|
bool with_link;
|
|
|
|
spin_lock_irqsave(&ndp->lock, flags);
|
|
hot_nc = ndp->hot_channel;
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
|
|
/* By default the search is done once an inactive channel with up
|
|
* link is found, unless a preferred channel is set.
|
|
* If multi_package or multi_channel are configured all channels in the
|
|
* whitelist are added to the channel queue.
|
|
*/
|
|
found = NULL;
|
|
with_link = false;
|
|
NCSI_FOR_EACH_PACKAGE(ndp, np) {
|
|
if (!(ndp->package_whitelist & (0x1 << np->id)))
|
|
continue;
|
|
NCSI_FOR_EACH_CHANNEL(np, nc) {
|
|
if (!(np->channel_whitelist & (0x1 << nc->id)))
|
|
continue;
|
|
|
|
spin_lock_irqsave(&nc->lock, cflags);
|
|
|
|
if (!list_empty(&nc->link) ||
|
|
nc->state != NCSI_CHANNEL_INACTIVE) {
|
|
spin_unlock_irqrestore(&nc->lock, cflags);
|
|
continue;
|
|
}
|
|
|
|
if (!found)
|
|
found = nc;
|
|
|
|
if (nc == hot_nc)
|
|
found = nc;
|
|
|
|
ncm = &nc->modes[NCSI_MODE_LINK];
|
|
if (ncm->data[2] & 0x1) {
|
|
found = nc;
|
|
with_link = true;
|
|
}
|
|
|
|
/* If multi_channel is enabled configure all valid
|
|
* channels whether or not they currently have link
|
|
* so they will have AENs enabled.
|
|
*/
|
|
if (with_link || np->multi_channel) {
|
|
spin_lock_irqsave(&ndp->lock, flags);
|
|
list_add_tail_rcu(&nc->link,
|
|
&ndp->channel_queue);
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
|
|
netdev_dbg(ndp->ndev.dev,
|
|
"NCSI: Channel %u added to queue (link %s)\n",
|
|
nc->id,
|
|
ncm->data[2] & 0x1 ? "up" : "down");
|
|
}
|
|
|
|
spin_unlock_irqrestore(&nc->lock, cflags);
|
|
|
|
if (with_link && !np->multi_channel)
|
|
break;
|
|
}
|
|
if (with_link && !ndp->multi_package)
|
|
break;
|
|
}
|
|
|
|
if (list_empty(&ndp->channel_queue) && found) {
|
|
netdev_info(ndp->ndev.dev,
|
|
"NCSI: No channel with link found, configuring channel %u\n",
|
|
found->id);
|
|
spin_lock_irqsave(&ndp->lock, flags);
|
|
list_add_tail_rcu(&found->link, &ndp->channel_queue);
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
} else if (!found) {
|
|
netdev_warn(ndp->ndev.dev,
|
|
"NCSI: No channel found to configure!\n");
|
|
ncsi_report_link(ndp, true);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return ncsi_process_next_channel(ndp);
|
|
}
|
|
|
|
static bool ncsi_check_hwa(struct ncsi_dev_priv *ndp)
|
|
{
|
|
struct ncsi_package *np;
|
|
struct ncsi_channel *nc;
|
|
unsigned int cap;
|
|
bool has_channel = false;
|
|
|
|
/* The hardware arbitration is disabled if any one channel
|
|
* doesn't support explicitly.
|
|
*/
|
|
NCSI_FOR_EACH_PACKAGE(ndp, np) {
|
|
NCSI_FOR_EACH_CHANNEL(np, nc) {
|
|
has_channel = true;
|
|
|
|
cap = nc->caps[NCSI_CAP_GENERIC].cap;
|
|
if (!(cap & NCSI_CAP_GENERIC_HWA) ||
|
|
(cap & NCSI_CAP_GENERIC_HWA_MASK) !=
|
|
NCSI_CAP_GENERIC_HWA_SUPPORT) {
|
|
ndp->flags &= ~NCSI_DEV_HWA;
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (has_channel) {
|
|
ndp->flags |= NCSI_DEV_HWA;
|
|
return true;
|
|
}
|
|
|
|
ndp->flags &= ~NCSI_DEV_HWA;
|
|
return false;
|
|
}
|
|
|
|
static void ncsi_probe_channel(struct ncsi_dev_priv *ndp)
|
|
{
|
|
struct ncsi_dev *nd = &ndp->ndev;
|
|
struct ncsi_package *np;
|
|
struct ncsi_cmd_arg nca;
|
|
unsigned char index;
|
|
int ret;
|
|
|
|
nca.ndp = ndp;
|
|
nca.req_flags = NCSI_REQ_FLAG_EVENT_DRIVEN;
|
|
switch (nd->state) {
|
|
case ncsi_dev_state_probe:
|
|
nd->state = ncsi_dev_state_probe_deselect;
|
|
fallthrough;
|
|
case ncsi_dev_state_probe_deselect:
|
|
ndp->pending_req_num = 8;
|
|
|
|
/* Deselect all possible packages */
|
|
nca.type = NCSI_PKT_CMD_DP;
|
|
nca.channel = NCSI_RESERVED_CHANNEL;
|
|
for (index = 0; index < 8; index++) {
|
|
nca.package = index;
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret)
|
|
goto error;
|
|
}
|
|
|
|
nd->state = ncsi_dev_state_probe_package;
|
|
break;
|
|
case ncsi_dev_state_probe_package:
|
|
ndp->pending_req_num = 1;
|
|
|
|
nca.type = NCSI_PKT_CMD_SP;
|
|
nca.bytes[0] = 1;
|
|
nca.package = ndp->package_probe_id;
|
|
nca.channel = NCSI_RESERVED_CHANNEL;
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret)
|
|
goto error;
|
|
nd->state = ncsi_dev_state_probe_channel;
|
|
break;
|
|
case ncsi_dev_state_probe_channel:
|
|
ndp->active_package = ncsi_find_package(ndp,
|
|
ndp->package_probe_id);
|
|
if (!ndp->active_package) {
|
|
/* No response */
|
|
nd->state = ncsi_dev_state_probe_dp;
|
|
schedule_work(&ndp->work);
|
|
break;
|
|
}
|
|
nd->state = ncsi_dev_state_probe_cis;
|
|
if (IS_ENABLED(CONFIG_NCSI_OEM_CMD_GET_MAC) &&
|
|
ndp->mlx_multi_host)
|
|
nd->state = ncsi_dev_state_probe_mlx_gma;
|
|
|
|
schedule_work(&ndp->work);
|
|
break;
|
|
case ncsi_dev_state_probe_mlx_gma:
|
|
ndp->pending_req_num = 1;
|
|
|
|
nca.type = NCSI_PKT_CMD_OEM;
|
|
nca.package = ndp->active_package->id;
|
|
nca.channel = 0;
|
|
ret = ncsi_oem_gma_handler_mlx(&nca);
|
|
if (ret)
|
|
goto error;
|
|
|
|
nd->state = ncsi_dev_state_probe_mlx_smaf;
|
|
break;
|
|
case ncsi_dev_state_probe_mlx_smaf:
|
|
ndp->pending_req_num = 1;
|
|
|
|
nca.type = NCSI_PKT_CMD_OEM;
|
|
nca.package = ndp->active_package->id;
|
|
nca.channel = 0;
|
|
ret = ncsi_oem_smaf_mlx(&nca);
|
|
if (ret)
|
|
goto error;
|
|
|
|
nd->state = ncsi_dev_state_probe_cis;
|
|
break;
|
|
case ncsi_dev_state_probe_keep_phy:
|
|
ndp->pending_req_num = 1;
|
|
|
|
nca.type = NCSI_PKT_CMD_OEM;
|
|
nca.package = ndp->active_package->id;
|
|
nca.channel = 0;
|
|
ret = ncsi_oem_keep_phy_intel(&nca);
|
|
if (ret)
|
|
goto error;
|
|
|
|
nd->state = ncsi_dev_state_probe_gvi;
|
|
break;
|
|
case ncsi_dev_state_probe_cis:
|
|
case ncsi_dev_state_probe_gvi:
|
|
case ncsi_dev_state_probe_gc:
|
|
case ncsi_dev_state_probe_gls:
|
|
np = ndp->active_package;
|
|
ndp->pending_req_num = 1;
|
|
|
|
/* Clear initial state Retrieve version, capability or link status */
|
|
if (nd->state == ncsi_dev_state_probe_cis)
|
|
nca.type = NCSI_PKT_CMD_CIS;
|
|
else if (nd->state == ncsi_dev_state_probe_gvi)
|
|
nca.type = NCSI_PKT_CMD_GVI;
|
|
else if (nd->state == ncsi_dev_state_probe_gc)
|
|
nca.type = NCSI_PKT_CMD_GC;
|
|
else
|
|
nca.type = NCSI_PKT_CMD_GLS;
|
|
|
|
nca.package = np->id;
|
|
nca.channel = ndp->channel_probe_id;
|
|
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret)
|
|
goto error;
|
|
|
|
if (nd->state == ncsi_dev_state_probe_cis) {
|
|
nd->state = ncsi_dev_state_probe_gvi;
|
|
if (IS_ENABLED(CONFIG_NCSI_OEM_CMD_KEEP_PHY) && ndp->channel_probe_id == 0)
|
|
nd->state = ncsi_dev_state_probe_keep_phy;
|
|
} else if (nd->state == ncsi_dev_state_probe_gvi) {
|
|
nd->state = ncsi_dev_state_probe_gc;
|
|
} else if (nd->state == ncsi_dev_state_probe_gc) {
|
|
nd->state = ncsi_dev_state_probe_gls;
|
|
} else {
|
|
nd->state = ncsi_dev_state_probe_cis;
|
|
ndp->channel_probe_id++;
|
|
}
|
|
|
|
if (ndp->channel_probe_id == ndp->channel_count) {
|
|
ndp->channel_probe_id = 0;
|
|
nd->state = ncsi_dev_state_probe_dp;
|
|
}
|
|
break;
|
|
case ncsi_dev_state_probe_dp:
|
|
ndp->pending_req_num = 1;
|
|
|
|
/* Deselect the current package */
|
|
nca.type = NCSI_PKT_CMD_DP;
|
|
nca.package = ndp->package_probe_id;
|
|
nca.channel = NCSI_RESERVED_CHANNEL;
|
|
ret = ncsi_xmit_cmd(&nca);
|
|
if (ret)
|
|
goto error;
|
|
|
|
/* Probe next package */
|
|
ndp->package_probe_id++;
|
|
if (ndp->package_probe_id >= 8) {
|
|
/* Probe finished */
|
|
ndp->flags |= NCSI_DEV_PROBED;
|
|
break;
|
|
}
|
|
nd->state = ncsi_dev_state_probe_package;
|
|
ndp->active_package = NULL;
|
|
break;
|
|
default:
|
|
netdev_warn(nd->dev, "Wrong NCSI state 0x%0x in enumeration\n",
|
|
nd->state);
|
|
}
|
|
|
|
if (ndp->flags & NCSI_DEV_PROBED) {
|
|
/* Check if all packages have HWA support */
|
|
ncsi_check_hwa(ndp);
|
|
ncsi_choose_active_channel(ndp);
|
|
}
|
|
|
|
return;
|
|
error:
|
|
netdev_err(ndp->ndev.dev,
|
|
"NCSI: Failed to transmit cmd 0x%x during probe\n",
|
|
nca.type);
|
|
ncsi_report_link(ndp, true);
|
|
}
|
|
|
|
static void ncsi_dev_work(struct work_struct *work)
|
|
{
|
|
struct ncsi_dev_priv *ndp = container_of(work,
|
|
struct ncsi_dev_priv, work);
|
|
struct ncsi_dev *nd = &ndp->ndev;
|
|
|
|
switch (nd->state & ncsi_dev_state_major) {
|
|
case ncsi_dev_state_probe:
|
|
ncsi_probe_channel(ndp);
|
|
break;
|
|
case ncsi_dev_state_suspend:
|
|
ncsi_suspend_channel(ndp);
|
|
break;
|
|
case ncsi_dev_state_config:
|
|
ncsi_configure_channel(ndp);
|
|
break;
|
|
default:
|
|
netdev_warn(nd->dev, "Wrong NCSI state 0x%x in workqueue\n",
|
|
nd->state);
|
|
}
|
|
}
|
|
|
|
int ncsi_process_next_channel(struct ncsi_dev_priv *ndp)
|
|
{
|
|
struct ncsi_channel *nc;
|
|
int old_state;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ndp->lock, flags);
|
|
nc = list_first_or_null_rcu(&ndp->channel_queue,
|
|
struct ncsi_channel, link);
|
|
if (!nc) {
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
goto out;
|
|
}
|
|
|
|
list_del_init(&nc->link);
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
|
|
spin_lock_irqsave(&nc->lock, flags);
|
|
old_state = nc->state;
|
|
nc->state = NCSI_CHANNEL_INVISIBLE;
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
|
|
ndp->active_channel = nc;
|
|
ndp->active_package = nc->package;
|
|
|
|
switch (old_state) {
|
|
case NCSI_CHANNEL_INACTIVE:
|
|
ndp->ndev.state = ncsi_dev_state_config;
|
|
netdev_dbg(ndp->ndev.dev, "NCSI: configuring channel %u\n",
|
|
nc->id);
|
|
ncsi_configure_channel(ndp);
|
|
break;
|
|
case NCSI_CHANNEL_ACTIVE:
|
|
ndp->ndev.state = ncsi_dev_state_suspend;
|
|
netdev_dbg(ndp->ndev.dev, "NCSI: suspending channel %u\n",
|
|
nc->id);
|
|
ncsi_suspend_channel(ndp);
|
|
break;
|
|
default:
|
|
netdev_err(ndp->ndev.dev, "Invalid state 0x%x on %d:%d\n",
|
|
old_state, nc->package->id, nc->id);
|
|
ncsi_report_link(ndp, false);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out:
|
|
ndp->active_channel = NULL;
|
|
ndp->active_package = NULL;
|
|
if (ndp->flags & NCSI_DEV_RESHUFFLE) {
|
|
ndp->flags &= ~NCSI_DEV_RESHUFFLE;
|
|
return ncsi_choose_active_channel(ndp);
|
|
}
|
|
|
|
ncsi_report_link(ndp, false);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int ncsi_kick_channels(struct ncsi_dev_priv *ndp)
|
|
{
|
|
struct ncsi_dev *nd = &ndp->ndev;
|
|
struct ncsi_channel *nc;
|
|
struct ncsi_package *np;
|
|
unsigned long flags;
|
|
unsigned int n = 0;
|
|
|
|
NCSI_FOR_EACH_PACKAGE(ndp, np) {
|
|
NCSI_FOR_EACH_CHANNEL(np, nc) {
|
|
spin_lock_irqsave(&nc->lock, flags);
|
|
|
|
/* Channels may be busy, mark dirty instead of
|
|
* kicking if;
|
|
* a) not ACTIVE (configured)
|
|
* b) in the channel_queue (to be configured)
|
|
* c) it's ndev is in the config state
|
|
*/
|
|
if (nc->state != NCSI_CHANNEL_ACTIVE) {
|
|
if ((ndp->ndev.state & 0xff00) ==
|
|
ncsi_dev_state_config ||
|
|
!list_empty(&nc->link)) {
|
|
netdev_dbg(nd->dev,
|
|
"NCSI: channel %p marked dirty\n",
|
|
nc);
|
|
nc->reconfigure_needed = true;
|
|
}
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
continue;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
|
|
ncsi_stop_channel_monitor(nc);
|
|
spin_lock_irqsave(&nc->lock, flags);
|
|
nc->state = NCSI_CHANNEL_INACTIVE;
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
|
|
spin_lock_irqsave(&ndp->lock, flags);
|
|
list_add_tail_rcu(&nc->link, &ndp->channel_queue);
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
|
|
netdev_dbg(nd->dev, "NCSI: kicked channel %p\n", nc);
|
|
n++;
|
|
}
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
int ncsi_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
|
|
{
|
|
struct ncsi_dev_priv *ndp;
|
|
unsigned int n_vids = 0;
|
|
struct vlan_vid *vlan;
|
|
struct ncsi_dev *nd;
|
|
bool found = false;
|
|
|
|
if (vid == 0)
|
|
return 0;
|
|
|
|
nd = ncsi_find_dev(dev);
|
|
if (!nd) {
|
|
netdev_warn(dev, "NCSI: No net_device?\n");
|
|
return 0;
|
|
}
|
|
|
|
ndp = TO_NCSI_DEV_PRIV(nd);
|
|
|
|
/* Add the VLAN id to our internal list */
|
|
list_for_each_entry_rcu(vlan, &ndp->vlan_vids, list) {
|
|
n_vids++;
|
|
if (vlan->vid == vid) {
|
|
netdev_dbg(dev, "NCSI: vid %u already registered\n",
|
|
vid);
|
|
return 0;
|
|
}
|
|
}
|
|
if (n_vids >= NCSI_MAX_VLAN_VIDS) {
|
|
netdev_warn(dev,
|
|
"tried to add vlan id %u but NCSI max already registered (%u)\n",
|
|
vid, NCSI_MAX_VLAN_VIDS);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
|
|
if (!vlan)
|
|
return -ENOMEM;
|
|
|
|
vlan->proto = proto;
|
|
vlan->vid = vid;
|
|
list_add_rcu(&vlan->list, &ndp->vlan_vids);
|
|
|
|
netdev_dbg(dev, "NCSI: Added new vid %u\n", vid);
|
|
|
|
found = ncsi_kick_channels(ndp) != 0;
|
|
|
|
return found ? ncsi_process_next_channel(ndp) : 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(ncsi_vlan_rx_add_vid);
|
|
|
|
int ncsi_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
|
|
{
|
|
struct vlan_vid *vlan, *tmp;
|
|
struct ncsi_dev_priv *ndp;
|
|
struct ncsi_dev *nd;
|
|
bool found = false;
|
|
|
|
if (vid == 0)
|
|
return 0;
|
|
|
|
nd = ncsi_find_dev(dev);
|
|
if (!nd) {
|
|
netdev_warn(dev, "NCSI: no net_device?\n");
|
|
return 0;
|
|
}
|
|
|
|
ndp = TO_NCSI_DEV_PRIV(nd);
|
|
|
|
/* Remove the VLAN id from our internal list */
|
|
list_for_each_entry_safe(vlan, tmp, &ndp->vlan_vids, list)
|
|
if (vlan->vid == vid) {
|
|
netdev_dbg(dev, "NCSI: vid %u found, removing\n", vid);
|
|
list_del_rcu(&vlan->list);
|
|
found = true;
|
|
kfree(vlan);
|
|
}
|
|
|
|
if (!found) {
|
|
netdev_err(dev, "NCSI: vid %u wasn't registered!\n", vid);
|
|
return -EINVAL;
|
|
}
|
|
|
|
found = ncsi_kick_channels(ndp) != 0;
|
|
|
|
return found ? ncsi_process_next_channel(ndp) : 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(ncsi_vlan_rx_kill_vid);
|
|
|
|
struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
|
|
void (*handler)(struct ncsi_dev *ndev))
|
|
{
|
|
struct ncsi_dev_priv *ndp;
|
|
struct ncsi_dev *nd;
|
|
struct platform_device *pdev;
|
|
struct device_node *np;
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
/* Check if the device has been registered or not */
|
|
nd = ncsi_find_dev(dev);
|
|
if (nd)
|
|
return nd;
|
|
|
|
/* Create NCSI device */
|
|
ndp = kzalloc(sizeof(*ndp), GFP_ATOMIC);
|
|
if (!ndp)
|
|
return NULL;
|
|
|
|
nd = &ndp->ndev;
|
|
nd->state = ncsi_dev_state_registered;
|
|
nd->dev = dev;
|
|
nd->handler = handler;
|
|
ndp->pending_req_num = 0;
|
|
INIT_LIST_HEAD(&ndp->channel_queue);
|
|
INIT_LIST_HEAD(&ndp->vlan_vids);
|
|
INIT_WORK(&ndp->work, ncsi_dev_work);
|
|
ndp->package_whitelist = UINT_MAX;
|
|
|
|
/* Initialize private NCSI device */
|
|
spin_lock_init(&ndp->lock);
|
|
INIT_LIST_HEAD(&ndp->packages);
|
|
ndp->request_id = NCSI_REQ_START_IDX;
|
|
for (i = 0; i < ARRAY_SIZE(ndp->requests); i++) {
|
|
ndp->requests[i].id = i;
|
|
ndp->requests[i].ndp = ndp;
|
|
timer_setup(&ndp->requests[i].timer, ncsi_request_timeout, 0);
|
|
}
|
|
ndp->channel_count = NCSI_RESERVED_CHANNEL;
|
|
|
|
spin_lock_irqsave(&ncsi_dev_lock, flags);
|
|
list_add_tail_rcu(&ndp->node, &ncsi_dev_list);
|
|
spin_unlock_irqrestore(&ncsi_dev_lock, flags);
|
|
|
|
/* Register NCSI packet Rx handler */
|
|
ndp->ptype.type = cpu_to_be16(ETH_P_NCSI);
|
|
ndp->ptype.func = ncsi_rcv_rsp;
|
|
ndp->ptype.dev = dev;
|
|
dev_add_pack(&ndp->ptype);
|
|
|
|
pdev = to_platform_device(dev->dev.parent);
|
|
if (pdev) {
|
|
np = pdev->dev.of_node;
|
|
if (np && (of_get_property(np, "mellanox,multi-host", NULL) ||
|
|
of_get_property(np, "mlx,multi-host", NULL)))
|
|
ndp->mlx_multi_host = true;
|
|
}
|
|
|
|
return nd;
|
|
}
|
|
EXPORT_SYMBOL_GPL(ncsi_register_dev);
|
|
|
|
int ncsi_start_dev(struct ncsi_dev *nd)
|
|
{
|
|
struct ncsi_dev_priv *ndp = TO_NCSI_DEV_PRIV(nd);
|
|
|
|
if (nd->state != ncsi_dev_state_registered &&
|
|
nd->state != ncsi_dev_state_functional)
|
|
return -ENOTTY;
|
|
|
|
if (!(ndp->flags & NCSI_DEV_PROBED)) {
|
|
ndp->package_probe_id = 0;
|
|
ndp->channel_probe_id = 0;
|
|
nd->state = ncsi_dev_state_probe;
|
|
schedule_work(&ndp->work);
|
|
return 0;
|
|
}
|
|
|
|
return ncsi_reset_dev(nd);
|
|
}
|
|
EXPORT_SYMBOL_GPL(ncsi_start_dev);
|
|
|
|
void ncsi_stop_dev(struct ncsi_dev *nd)
|
|
{
|
|
struct ncsi_dev_priv *ndp = TO_NCSI_DEV_PRIV(nd);
|
|
struct ncsi_package *np;
|
|
struct ncsi_channel *nc;
|
|
bool chained;
|
|
int old_state;
|
|
unsigned long flags;
|
|
|
|
/* Stop the channel monitor on any active channels. Don't reset the
|
|
* channel state so we know which were active when ncsi_start_dev()
|
|
* is next called.
|
|
*/
|
|
NCSI_FOR_EACH_PACKAGE(ndp, np) {
|
|
NCSI_FOR_EACH_CHANNEL(np, nc) {
|
|
ncsi_stop_channel_monitor(nc);
|
|
|
|
spin_lock_irqsave(&nc->lock, flags);
|
|
chained = !list_empty(&nc->link);
|
|
old_state = nc->state;
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
|
|
WARN_ON_ONCE(chained ||
|
|
old_state == NCSI_CHANNEL_INVISIBLE);
|
|
}
|
|
}
|
|
|
|
netdev_dbg(ndp->ndev.dev, "NCSI: Stopping device\n");
|
|
ncsi_report_link(ndp, true);
|
|
}
|
|
EXPORT_SYMBOL_GPL(ncsi_stop_dev);
|
|
|
|
int ncsi_reset_dev(struct ncsi_dev *nd)
|
|
{
|
|
struct ncsi_dev_priv *ndp = TO_NCSI_DEV_PRIV(nd);
|
|
struct ncsi_channel *nc, *active, *tmp;
|
|
struct ncsi_package *np;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ndp->lock, flags);
|
|
|
|
if (!(ndp->flags & NCSI_DEV_RESET)) {
|
|
/* Haven't been called yet, check states */
|
|
switch (nd->state & ncsi_dev_state_major) {
|
|
case ncsi_dev_state_registered:
|
|
case ncsi_dev_state_probe:
|
|
/* Not even probed yet - do nothing */
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
return 0;
|
|
case ncsi_dev_state_suspend:
|
|
case ncsi_dev_state_config:
|
|
/* Wait for the channel to finish its suspend/config
|
|
* operation; once it finishes it will check for
|
|
* NCSI_DEV_RESET and reset the state.
|
|
*/
|
|
ndp->flags |= NCSI_DEV_RESET;
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
return 0;
|
|
}
|
|
} else {
|
|
switch (nd->state) {
|
|
case ncsi_dev_state_suspend_done:
|
|
case ncsi_dev_state_config_done:
|
|
case ncsi_dev_state_functional:
|
|
/* Ok */
|
|
break;
|
|
default:
|
|
/* Current reset operation happening */
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (!list_empty(&ndp->channel_queue)) {
|
|
/* Clear any channel queue we may have interrupted */
|
|
list_for_each_entry_safe(nc, tmp, &ndp->channel_queue, link)
|
|
list_del_init(&nc->link);
|
|
}
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
|
|
active = NULL;
|
|
NCSI_FOR_EACH_PACKAGE(ndp, np) {
|
|
NCSI_FOR_EACH_CHANNEL(np, nc) {
|
|
spin_lock_irqsave(&nc->lock, flags);
|
|
|
|
if (nc->state == NCSI_CHANNEL_ACTIVE) {
|
|
active = nc;
|
|
nc->state = NCSI_CHANNEL_INVISIBLE;
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
ncsi_stop_channel_monitor(nc);
|
|
break;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&nc->lock, flags);
|
|
}
|
|
if (active)
|
|
break;
|
|
}
|
|
|
|
if (!active) {
|
|
/* Done */
|
|
spin_lock_irqsave(&ndp->lock, flags);
|
|
ndp->flags &= ~NCSI_DEV_RESET;
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
return ncsi_choose_active_channel(ndp);
|
|
}
|
|
|
|
spin_lock_irqsave(&ndp->lock, flags);
|
|
ndp->flags |= NCSI_DEV_RESET;
|
|
ndp->active_channel = active;
|
|
ndp->active_package = active->package;
|
|
spin_unlock_irqrestore(&ndp->lock, flags);
|
|
|
|
nd->state = ncsi_dev_state_suspend;
|
|
schedule_work(&ndp->work);
|
|
return 0;
|
|
}
|
|
|
|
void ncsi_unregister_dev(struct ncsi_dev *nd)
|
|
{
|
|
struct ncsi_dev_priv *ndp = TO_NCSI_DEV_PRIV(nd);
|
|
struct ncsi_package *np, *tmp;
|
|
unsigned long flags;
|
|
|
|
dev_remove_pack(&ndp->ptype);
|
|
|
|
list_for_each_entry_safe(np, tmp, &ndp->packages, node)
|
|
ncsi_remove_package(np);
|
|
|
|
spin_lock_irqsave(&ncsi_dev_lock, flags);
|
|
list_del_rcu(&ndp->node);
|
|
spin_unlock_irqrestore(&ncsi_dev_lock, flags);
|
|
|
|
kfree(ndp);
|
|
}
|
|
EXPORT_SYMBOL_GPL(ncsi_unregister_dev);
|