-/* Copyright 2011-2013 Autronica Fire and Security AS
+/* Copyright 2011-2014 Autronica Fire and Security AS
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* any later version.
*
* Author(s):
- * 2011-2013 Arvid Brodin, arvid.brodin@xdin.com
+ * 2011-2014 Arvid Brodin, arvid.brodin@alten.se
*
* This file contains device methods for creating, using and destroying
* virtual HSR devices.
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/etherdevice.h>
-#include <linux/if_arp.h>
#include <linux/rtnetlink.h>
#include <linux/pkt_sched.h>
#include "hsr_device.h"
+#include "hsr_slave.h"
#include "hsr_framereg.h"
#include "hsr_main.h"
+#include "hsr_forward.h"
static bool is_admin_up(struct net_device *dev)
}
}
-void hsr_set_operstate(struct net_device *hsr_dev, struct net_device *slave1,
- struct net_device *slave2)
+static void hsr_set_operstate(struct hsr_port *master, bool has_carrier)
{
- if (!is_admin_up(hsr_dev)) {
- __hsr_set_operstate(hsr_dev, IF_OPER_DOWN);
+ if (!is_admin_up(master->dev)) {
+ __hsr_set_operstate(master->dev, IF_OPER_DOWN);
return;
}
- if (is_slave_up(slave1) || is_slave_up(slave2))
- __hsr_set_operstate(hsr_dev, IF_OPER_UP);
+ if (has_carrier)
+ __hsr_set_operstate(master->dev, IF_OPER_UP);
else
- __hsr_set_operstate(hsr_dev, IF_OPER_LOWERLAYERDOWN);
+ __hsr_set_operstate(master->dev, IF_OPER_LOWERLAYERDOWN);
}
-void hsr_set_carrier(struct net_device *hsr_dev, struct net_device *slave1,
- struct net_device *slave2)
+static bool hsr_check_carrier(struct hsr_port *master)
{
- if (is_slave_up(slave1) || is_slave_up(slave2))
- netif_carrier_on(hsr_dev);
+ struct hsr_port *port;
+ bool has_carrier;
+
+ has_carrier = false;
+
+ rcu_read_lock();
+ hsr_for_each_port(master->hsr, port)
+ if ((port->type != HSR_PT_MASTER) && is_slave_up(port->dev)) {
+ has_carrier = true;
+ break;
+ }
+ rcu_read_unlock();
+
+ if (has_carrier)
+ netif_carrier_on(master->dev);
else
- netif_carrier_off(hsr_dev);
+ netif_carrier_off(master->dev);
+
+ return has_carrier;
}
-void hsr_check_announce(struct net_device *hsr_dev, int old_operstate)
+static void hsr_check_announce(struct net_device *hsr_dev,
+ unsigned char old_operstate)
{
- struct hsr_priv *hsr_priv;
+ struct hsr_priv *hsr;
- hsr_priv = netdev_priv(hsr_dev);
+ hsr = netdev_priv(hsr_dev);
if ((hsr_dev->operstate == IF_OPER_UP) && (old_operstate != IF_OPER_UP)) {
/* Went up */
- hsr_priv->announce_count = 0;
- hsr_priv->announce_timer.expires = jiffies +
+ hsr->announce_count = 0;
+ hsr->announce_timer.expires = jiffies +
msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL);
- add_timer(&hsr_priv->announce_timer);
+ add_timer(&hsr->announce_timer);
}
if ((hsr_dev->operstate != IF_OPER_UP) && (old_operstate == IF_OPER_UP))
/* Went down */
- del_timer(&hsr_priv->announce_timer);
+ del_timer(&hsr->announce_timer);
}
-
-int hsr_get_max_mtu(struct hsr_priv *hsr_priv)
+void hsr_check_carrier_and_operstate(struct hsr_priv *hsr)
{
- int mtu_max;
-
- if (hsr_priv->slave[0] && hsr_priv->slave[1])
- mtu_max = min(hsr_priv->slave[0]->mtu, hsr_priv->slave[1]->mtu);
- else if (hsr_priv->slave[0])
- mtu_max = hsr_priv->slave[0]->mtu;
- else if (hsr_priv->slave[1])
- mtu_max = hsr_priv->slave[1]->mtu;
- else
- mtu_max = HSR_TAGLEN;
+ struct hsr_port *master;
+ unsigned char old_operstate;
+ bool has_carrier;
- return mtu_max - HSR_TAGLEN;
+ master = hsr_port_get_hsr(hsr, HSR_PT_MASTER);
+ /* netif_stacked_transfer_operstate() cannot be used here since
+ * it doesn't set IF_OPER_LOWERLAYERDOWN (?)
+ */
+ old_operstate = master->dev->operstate;
+ has_carrier = hsr_check_carrier(master);
+ hsr_set_operstate(master, has_carrier);
+ hsr_check_announce(master->dev, old_operstate);
}
+int hsr_get_max_mtu(struct hsr_priv *hsr)
+{
+ unsigned int mtu_max;
+ struct hsr_port *port;
+
+ mtu_max = ETH_DATA_LEN;
+ rcu_read_lock();
+ hsr_for_each_port(hsr, port)
+ if (port->type != HSR_PT_MASTER)
+ mtu_max = min(port->dev->mtu, mtu_max);
+ rcu_read_unlock();
+
+ if (mtu_max < HSR_HLEN)
+ return 0;
+ return mtu_max - HSR_HLEN;
+}
+
+
static int hsr_dev_change_mtu(struct net_device *dev, int new_mtu)
{
- struct hsr_priv *hsr_priv;
+ struct hsr_priv *hsr;
+ struct hsr_port *master;
- hsr_priv = netdev_priv(dev);
+ hsr = netdev_priv(dev);
+ master = hsr_port_get_hsr(hsr, HSR_PT_MASTER);
- if (new_mtu > hsr_get_max_mtu(hsr_priv)) {
- netdev_info(hsr_priv->dev, "A HSR master's MTU cannot be greater than the smallest MTU of its slaves minus the HSR Tag length (%d octets).\n",
- HSR_TAGLEN);
+ if (new_mtu > hsr_get_max_mtu(hsr)) {
+ netdev_info(master->dev, "A HSR master's MTU cannot be greater than the smallest MTU of its slaves minus the HSR Tag length (%d octets).\n",
+ HSR_HLEN);
return -EINVAL;
}
static int hsr_dev_open(struct net_device *dev)
{
- struct hsr_priv *hsr_priv;
- int i;
- char *slave_name;
+ struct hsr_priv *hsr;
+ struct hsr_port *port;
+ char designation;
- hsr_priv = netdev_priv(dev);
+ hsr = netdev_priv(dev);
+ designation = '\0';
- for (i = 0; i < HSR_MAX_SLAVE; i++) {
- if (hsr_priv->slave[i])
- slave_name = hsr_priv->slave[i]->name;
- else
- slave_name = "null";
-
- if (!is_slave_up(hsr_priv->slave[i]))
- netdev_warn(dev, "Slave %c (%s) is not up; please bring it up to get a working HSR network\n",
- 'A' + i, slave_name);
+ rcu_read_lock();
+ hsr_for_each_port(hsr, port) {
+ if (port->type == HSR_PT_MASTER)
+ continue;
+ switch (port->type) {
+ case HSR_PT_SLAVE_A:
+ designation = 'A';
+ break;
+ case HSR_PT_SLAVE_B:
+ designation = 'B';
+ break;
+ default:
+ designation = '?';
+ }
+ if (!is_slave_up(port->dev))
+ netdev_warn(dev, "Slave %c (%s) is not up; please bring it up to get a fully working HSR network\n",
+ designation, port->dev->name);
}
+ rcu_read_unlock();
+
+ if (designation == '\0')
+ netdev_warn(dev, "No slave devices configured\n");
return 0;
}
+
static int hsr_dev_close(struct net_device *dev)
{
- /* Nothing to do here. We could try to restore the state of the slaves
- * to what they were before being changed by the hsr master dev's state,
- * but they might have been changed manually in the mean time too, so
- * taking them up or down here might be confusing and is probably not a
- * good idea.
- */
+ /* Nothing to do here. */
return 0;
}
-static void hsr_fill_tag(struct hsr_ethhdr *hsr_ethhdr, struct hsr_priv *hsr_priv)
+static netdev_features_t hsr_features_recompute(struct hsr_priv *hsr,
+ netdev_features_t features)
{
- unsigned long irqflags;
+ netdev_features_t mask;
+ struct hsr_port *port;
- /* IEC 62439-1:2010, p 48, says the 4-bit "path" field can take values
- * between 0001-1001 ("ring identifier", for regular HSR frames),
- * or 1111 ("HSR management", supervision frames). Unfortunately, the
- * spec writers forgot to explain what a "ring identifier" is, or
- * how it is used. So we just set this to 0001 for regular frames,
- * and 1111 for supervision frames.
- */
- set_hsr_tag_path(&hsr_ethhdr->hsr_tag, 0x1);
+ mask = features;
- /* IEC 62439-1:2010, p 12: "The link service data unit in an Ethernet
- * frame is the content of the frame located between the Length/Type
- * field and the Frame Check Sequence."
+ /* Mask out all features that, if supported by one device, should be
+ * enabled for all devices (see NETIF_F_ONE_FOR_ALL).
*
- * IEC 62439-3, p 48, specifies the "original LPDU" to include the
- * original "LT" field (what "LT" means is not explained anywhere as
- * far as I can see - perhaps "Length/Type"?). So LSDU_size might
- * equal original length + 2.
- * Also, the fact that this field is not used anywhere (might be used
- * by a RedBox connecting HSR and PRP nets?) means I cannot test its
- * correctness. Instead of guessing, I set this to 0 here, to make any
- * problems immediately apparent. Anyone using this driver with PRP/HSR
- * RedBoxes might need to fix this...
+ * Anything that's off in mask will not be enabled - so only things
+ * that were in features originally, and also is in NETIF_F_ONE_FOR_ALL,
+ * may become enabled.
*/
- set_hsr_tag_LSDU_size(&hsr_ethhdr->hsr_tag, 0);
-
- spin_lock_irqsave(&hsr_priv->seqnr_lock, irqflags);
- hsr_ethhdr->hsr_tag.sequence_nr = htons(hsr_priv->sequence_nr);
- hsr_priv->sequence_nr++;
- spin_unlock_irqrestore(&hsr_priv->seqnr_lock, irqflags);
+ features &= ~NETIF_F_ONE_FOR_ALL;
+ hsr_for_each_port(hsr, port)
+ features = netdev_increment_features(features,
+ port->dev->features,
+ mask);
- hsr_ethhdr->hsr_tag.encap_proto = hsr_ethhdr->ethhdr.h_proto;
-
- hsr_ethhdr->ethhdr.h_proto = htons(ETH_P_PRP);
+ return features;
}
-static int slave_xmit(struct sk_buff *skb, struct hsr_priv *hsr_priv,
- enum hsr_dev_idx dev_idx)
+static netdev_features_t hsr_fix_features(struct net_device *dev,
+ netdev_features_t features)
{
- struct hsr_ethhdr *hsr_ethhdr;
-
- hsr_ethhdr = (struct hsr_ethhdr *) skb->data;
+ struct hsr_priv *hsr = netdev_priv(dev);
- skb->dev = hsr_priv->slave[dev_idx];
-
- hsr_addr_subst_dest(hsr_priv, &hsr_ethhdr->ethhdr, dev_idx);
-
- /* Address substitution (IEC62439-3 pp 26, 50): replace mac
- * address of outgoing frame with that of the outgoing slave's.
- */
- ether_addr_copy(hsr_ethhdr->ethhdr.h_source, skb->dev->dev_addr);
-
- return dev_queue_xmit(skb);
+ return hsr_features_recompute(hsr, features);
}
static int hsr_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
- struct hsr_priv *hsr_priv;
- struct hsr_ethhdr *hsr_ethhdr;
- struct sk_buff *skb2;
- int res1, res2;
-
- hsr_priv = netdev_priv(dev);
- hsr_ethhdr = (struct hsr_ethhdr *) skb->data;
-
- if ((skb->protocol != htons(ETH_P_PRP)) ||
- (hsr_ethhdr->ethhdr.h_proto != htons(ETH_P_PRP))) {
- hsr_fill_tag(hsr_ethhdr, hsr_priv);
- skb->protocol = htons(ETH_P_PRP);
- }
-
- skb2 = pskb_copy(skb, GFP_ATOMIC);
-
- res1 = NET_XMIT_DROP;
- if (likely(hsr_priv->slave[HSR_DEV_SLAVE_A]))
- res1 = slave_xmit(skb, hsr_priv, HSR_DEV_SLAVE_A);
+ struct hsr_priv *hsr = netdev_priv(dev);
+ struct hsr_port *master;
- res2 = NET_XMIT_DROP;
- if (likely(skb2 && hsr_priv->slave[HSR_DEV_SLAVE_B]))
- res2 = slave_xmit(skb2, hsr_priv, HSR_DEV_SLAVE_B);
-
- if (likely(res1 == NET_XMIT_SUCCESS || res1 == NET_XMIT_CN ||
- res2 == NET_XMIT_SUCCESS || res2 == NET_XMIT_CN)) {
- hsr_priv->dev->stats.tx_packets++;
- hsr_priv->dev->stats.tx_bytes += skb->len;
- } else {
- hsr_priv->dev->stats.tx_dropped++;
- }
+ master = hsr_port_get_hsr(hsr, HSR_PT_MASTER);
+ skb->dev = master->dev;
+ hsr_forward_skb(skb, master);
return NETDEV_TX_OK;
}
-static int hsr_header_create(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, const void *daddr,
- const void *saddr, unsigned int len)
-{
- int res;
-
- /* Make room for the HSR tag now. We will fill it in later (in
- * hsr_dev_xmit)
- */
- if (skb_headroom(skb) < HSR_TAGLEN + ETH_HLEN)
- return -ENOBUFS;
- skb_push(skb, HSR_TAGLEN);
-
- /* To allow VLAN/HSR combos we should probably use
- * res = dev_hard_header(skb, dev, type, daddr, saddr, len + HSR_TAGLEN);
- * here instead. It would require other changes too, though - e.g.
- * separate headers for each slave etc...
- */
- res = eth_header(skb, dev, type, daddr, saddr, len + HSR_TAGLEN);
- if (res <= 0)
- return res;
- skb_reset_mac_header(skb);
-
- return res + HSR_TAGLEN;
-}
-
-
static const struct header_ops hsr_header_ops = {
- .create = hsr_header_create,
+ .create = eth_header,
.parse = eth_header_parse,
};
*/
static int hsr_pad(int size)
{
- const int min_size = ETH_ZLEN - HSR_TAGLEN - ETH_HLEN;
+ const int min_size = ETH_ZLEN - HSR_HLEN - ETH_HLEN;
if (size >= min_size)
return size;
return min_size;
}
-static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
+static void send_hsr_supervision_frame(struct hsr_port *master, u8 type)
{
- struct hsr_priv *hsr_priv;
struct sk_buff *skb;
int hlen, tlen;
struct hsr_sup_tag *hsr_stag;
struct hsr_sup_payload *hsr_sp;
unsigned long irqflags;
- hlen = LL_RESERVED_SPACE(hsr_dev);
- tlen = hsr_dev->needed_tailroom;
+ hlen = LL_RESERVED_SPACE(master->dev);
+ tlen = master->dev->needed_tailroom;
skb = alloc_skb(hsr_pad(sizeof(struct hsr_sup_payload)) + hlen + tlen,
GFP_ATOMIC);
if (skb == NULL)
return;
- hsr_priv = netdev_priv(hsr_dev);
-
skb_reserve(skb, hlen);
- skb->dev = hsr_dev;
+ skb->dev = master->dev;
skb->protocol = htons(ETH_P_PRP);
skb->priority = TC_PRIO_CONTROL;
if (dev_hard_header(skb, skb->dev, ETH_P_PRP,
- hsr_priv->sup_multicast_addr,
- skb->dev->dev_addr, skb->len) < 0)
+ master->hsr->sup_multicast_addr,
+ skb->dev->dev_addr, skb->len) <= 0)
goto out;
+ skb_reset_mac_header(skb);
- skb_pull(skb, sizeof(struct ethhdr));
- hsr_stag = (typeof(hsr_stag)) skb->data;
+ hsr_stag = (typeof(hsr_stag)) skb_put(skb, sizeof(*hsr_stag));
set_hsr_stag_path(hsr_stag, 0xf);
set_hsr_stag_HSR_Ver(hsr_stag, 0);
- spin_lock_irqsave(&hsr_priv->seqnr_lock, irqflags);
- hsr_stag->sequence_nr = htons(hsr_priv->sequence_nr);
- hsr_priv->sequence_nr++;
- spin_unlock_irqrestore(&hsr_priv->seqnr_lock, irqflags);
+ spin_lock_irqsave(&master->hsr->seqnr_lock, irqflags);
+ hsr_stag->sequence_nr = htons(master->hsr->sequence_nr);
+ master->hsr->sequence_nr++;
+ spin_unlock_irqrestore(&master->hsr->seqnr_lock, irqflags);
hsr_stag->HSR_TLV_Type = type;
hsr_stag->HSR_TLV_Length = 12;
- skb_push(skb, sizeof(struct ethhdr));
-
/* Payload: MacAddressA */
hsr_sp = (typeof(hsr_sp)) skb_put(skb, sizeof(*hsr_sp));
- ether_addr_copy(hsr_sp->MacAddressA, hsr_dev->dev_addr);
+ ether_addr_copy(hsr_sp->MacAddressA, master->dev->dev_addr);
- dev_queue_xmit(skb);
+ hsr_forward_skb(skb, master);
return;
out:
+ WARN_ON_ONCE("HSR: Could not send supervision frame\n");
kfree_skb(skb);
}
*/
static void hsr_announce(unsigned long data)
{
- struct hsr_priv *hsr_priv;
+ struct hsr_priv *hsr;
+ struct hsr_port *master;
- hsr_priv = (struct hsr_priv *) data;
+ hsr = (struct hsr_priv *) data;
- if (hsr_priv->announce_count < 3) {
- send_hsr_supervision_frame(hsr_priv->dev, HSR_TLV_ANNOUNCE);
- hsr_priv->announce_count++;
+ rcu_read_lock();
+ master = hsr_port_get_hsr(hsr, HSR_PT_MASTER);
+
+ if (hsr->announce_count < 3) {
+ send_hsr_supervision_frame(master, HSR_TLV_ANNOUNCE);
+ hsr->announce_count++;
} else {
- send_hsr_supervision_frame(hsr_priv->dev, HSR_TLV_LIFE_CHECK);
+ send_hsr_supervision_frame(master, HSR_TLV_LIFE_CHECK);
}
- if (hsr_priv->announce_count < 3)
- hsr_priv->announce_timer.expires = jiffies +
+ if (hsr->announce_count < 3)
+ hsr->announce_timer.expires = jiffies +
msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL);
else
- hsr_priv->announce_timer.expires = jiffies +
+ hsr->announce_timer.expires = jiffies +
msecs_to_jiffies(HSR_LIFE_CHECK_INTERVAL);
- if (is_admin_up(hsr_priv->dev))
- add_timer(&hsr_priv->announce_timer);
-}
-
-
-static void restore_slaves(struct net_device *hsr_dev)
-{
- struct hsr_priv *hsr_priv;
- int i;
- int res;
-
- hsr_priv = netdev_priv(hsr_dev);
-
- rtnl_lock();
-
- /* Restore promiscuity */
- for (i = 0; i < HSR_MAX_SLAVE; i++) {
- if (!hsr_priv->slave[i])
- continue;
- res = dev_set_promiscuity(hsr_priv->slave[i], -1);
- if (res)
- netdev_info(hsr_dev,
- "Cannot restore slave promiscuity (%s, %d)\n",
- hsr_priv->slave[i]->name, res);
- }
-
- rtnl_unlock();
-}
-
-static void reclaim_hsr_dev(struct rcu_head *rh)
-{
- struct hsr_priv *hsr_priv;
+ if (is_admin_up(master->dev))
+ add_timer(&hsr->announce_timer);
- hsr_priv = container_of(rh, struct hsr_priv, rcu_head);
- free_netdev(hsr_priv->dev);
+ rcu_read_unlock();
}
*/
static void hsr_dev_destroy(struct net_device *hsr_dev)
{
- struct hsr_priv *hsr_priv;
+ struct hsr_priv *hsr;
+ struct hsr_port *port;
- hsr_priv = netdev_priv(hsr_dev);
+ hsr = netdev_priv(hsr_dev);
+ hsr_for_each_port(hsr, port)
+ hsr_del_port(port);
- del_timer(&hsr_priv->announce_timer);
- unregister_hsr_master(hsr_priv); /* calls list_del_rcu on hsr_priv */
- restore_slaves(hsr_dev);
- call_rcu(&hsr_priv->rcu_head, reclaim_hsr_dev); /* reclaim hsr_priv */
+ del_timer_sync(&hsr->prune_timer);
+ del_timer_sync(&hsr->announce_timer);
+
+ synchronize_rcu();
+ free_netdev(hsr_dev);
}
static const struct net_device_ops hsr_device_ops = {
.ndo_open = hsr_dev_open,
.ndo_stop = hsr_dev_close,
.ndo_start_xmit = hsr_dev_xmit,
+ .ndo_fix_features = hsr_fix_features,
};
+static struct device_type hsr_type = {
+ .name = "hsr",
+};
void hsr_dev_setup(struct net_device *dev)
{
random_ether_addr(dev->dev_addr);
ether_setup(dev);
- dev->header_ops = &hsr_header_ops;
- dev->netdev_ops = &hsr_device_ops;
- dev->tx_queue_len = 0;
+ dev->header_ops = &hsr_header_ops;
+ dev->netdev_ops = &hsr_device_ops;
+ SET_NETDEV_DEVTYPE(dev, &hsr_type);
+ dev->tx_queue_len = 0;
dev->destructor = hsr_dev_destroy;
+
+ dev->hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA |
+ NETIF_F_GSO_MASK | NETIF_F_HW_CSUM |
+ NETIF_F_HW_VLAN_CTAG_TX;
+
+ dev->features = dev->hw_features;
+
+ /* Prevent recursive tx locking */
+ dev->features |= NETIF_F_LLTX;
+ /* VLAN on top of HSR needs testing and probably some work on
+ * hsr_header_create() etc.
+ */
+ dev->features |= NETIF_F_VLAN_CHALLENGED;
+ /* Not sure about this. Taken from bridge code. netdev_features.h says
+ * it means "Does not change network namespaces".
+ */
+ dev->features |= NETIF_F_NETNS_LOCAL;
}
/* Return true if dev is a HSR master; return false otherwise.
*/
-bool is_hsr_master(struct net_device *dev)
+inline bool is_hsr_master(struct net_device *dev)
{
return (dev->netdev_ops->ndo_start_xmit == hsr_dev_xmit);
}
-static int check_slave_ok(struct net_device *dev)
-{
- /* Don't allow HSR on non-ethernet like devices */
- if ((dev->flags & IFF_LOOPBACK) || (dev->type != ARPHRD_ETHER) ||
- (dev->addr_len != ETH_ALEN)) {
- netdev_info(dev, "Cannot use loopback or non-ethernet device as HSR slave.\n");
- return -EINVAL;
- }
-
- /* Don't allow enslaving hsr devices */
- if (is_hsr_master(dev)) {
- netdev_info(dev, "Cannot create trees of HSR devices.\n");
- return -EINVAL;
- }
-
- if (is_hsr_slave(dev)) {
- netdev_info(dev, "This device is already a HSR slave.\n");
- return -EINVAL;
- }
-
- if (dev->priv_flags & IFF_802_1Q_VLAN) {
- netdev_info(dev, "HSR on top of VLAN is not yet supported in this driver.\n");
- return -EINVAL;
- }
-
- /* HSR over bonded devices has not been tested, but I'm not sure it
- * won't work...
- */
-
- return 0;
-}
-
-
/* Default multicast address for HSR Supervision frames */
static const unsigned char def_multicast_addr[ETH_ALEN] __aligned(2) = {
0x01, 0x15, 0x4e, 0x00, 0x01, 0x00
int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
unsigned char multicast_spec)
{
- struct hsr_priv *hsr_priv;
- int i;
+ struct hsr_priv *hsr;
+ struct hsr_port *port;
int res;
- hsr_priv = netdev_priv(hsr_dev);
- hsr_priv->dev = hsr_dev;
- INIT_LIST_HEAD(&hsr_priv->node_db);
- INIT_LIST_HEAD(&hsr_priv->self_node_db);
- for (i = 0; i < HSR_MAX_SLAVE; i++)
- hsr_priv->slave[i] = slave[i];
-
- spin_lock_init(&hsr_priv->seqnr_lock);
- /* Overflow soon to find bugs easier: */
- hsr_priv->sequence_nr = USHRT_MAX - 1024;
-
- init_timer(&hsr_priv->announce_timer);
- hsr_priv->announce_timer.function = hsr_announce;
- hsr_priv->announce_timer.data = (unsigned long) hsr_priv;
+ hsr = netdev_priv(hsr_dev);
+ INIT_LIST_HEAD(&hsr->ports);
+ INIT_LIST_HEAD(&hsr->node_db);
+ INIT_LIST_HEAD(&hsr->self_node_db);
- ether_addr_copy(hsr_priv->sup_multicast_addr, def_multicast_addr);
- hsr_priv->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;
+ ether_addr_copy(hsr_dev->dev_addr, slave[0]->dev_addr);
-/* FIXME: should I modify the value of these?
- *
- * - hsr_dev->flags - i.e.
- * IFF_MASTER/SLAVE?
- * - hsr_dev->priv_flags - i.e.
- * IFF_EBRIDGE?
- * IFF_TX_SKB_SHARING?
- * IFF_HSR_MASTER/SLAVE?
- */
+ /* Make sure we recognize frames from ourselves in hsr_rcv() */
+ res = hsr_create_self_node(&hsr->self_node_db, hsr_dev->dev_addr,
+ slave[1]->dev_addr);
+ if (res < 0)
+ return res;
- for (i = 0; i < HSR_MAX_SLAVE; i++) {
- res = check_slave_ok(slave[i]);
- if (res)
- return res;
- }
+ spin_lock_init(&hsr->seqnr_lock);
+ /* Overflow soon to find bugs easier: */
+ hsr->sequence_nr = HSR_SEQNR_START;
- hsr_dev->features = slave[0]->features & slave[1]->features;
- /* Prevent recursive tx locking */
- hsr_dev->features |= NETIF_F_LLTX;
- /* VLAN on top of HSR needs testing and probably some work on
- * hsr_header_create() etc.
- */
- hsr_dev->features |= NETIF_F_VLAN_CHALLENGED;
+ init_timer(&hsr->announce_timer);
+ hsr->announce_timer.function = hsr_announce;
+ hsr->announce_timer.data = (unsigned long) hsr;
- /* Set hsr_dev's MAC address to that of mac_slave1 */
- ether_addr_copy(hsr_dev->dev_addr, hsr_priv->slave[0]->dev_addr);
+ init_timer(&hsr->prune_timer);
+ hsr->prune_timer.function = hsr_prune_nodes;
+ hsr->prune_timer.data = (unsigned long) hsr;
- /* Set required header length */
- for (i = 0; i < HSR_MAX_SLAVE; i++) {
- if (slave[i]->hard_header_len + HSR_TAGLEN >
- hsr_dev->hard_header_len)
- hsr_dev->hard_header_len =
- slave[i]->hard_header_len + HSR_TAGLEN;
- }
+ ether_addr_copy(hsr->sup_multicast_addr, def_multicast_addr);
+ hsr->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;
- /* MTU */
- for (i = 0; i < HSR_MAX_SLAVE; i++)
- if (slave[i]->mtu - HSR_TAGLEN < hsr_dev->mtu)
- hsr_dev->mtu = slave[i]->mtu - HSR_TAGLEN;
+ /* FIXME: should I modify the value of these?
+ *
+ * - hsr_dev->flags - i.e.
+ * IFF_MASTER/SLAVE?
+ * - hsr_dev->priv_flags - i.e.
+ * IFF_EBRIDGE?
+ * IFF_TX_SKB_SHARING?
+ * IFF_HSR_MASTER/SLAVE?
+ */
/* Make sure the 1st call to netif_carrier_on() gets through */
netif_carrier_off(hsr_dev);
- /* Promiscuity */
- for (i = 0; i < HSR_MAX_SLAVE; i++) {
- res = dev_set_promiscuity(slave[i], 1);
- if (res) {
- netdev_info(hsr_dev, "Cannot set slave promiscuity (%s, %d)\n",
- slave[i]->name, res);
- goto fail;
- }
- }
+ res = hsr_add_port(hsr, hsr_dev, HSR_PT_MASTER);
+ if (res)
+ return res;
- /* Make sure we recognize frames from ourselves in hsr_rcv() */
- res = hsr_create_self_node(&hsr_priv->self_node_db,
- hsr_dev->dev_addr,
- hsr_priv->slave[1]->dev_addr);
- if (res < 0)
+ res = register_netdevice(hsr_dev);
+ if (res)
goto fail;
- res = register_netdevice(hsr_dev);
+ res = hsr_add_port(hsr, slave[0], HSR_PT_SLAVE_A);
+ if (res)
+ goto fail;
+ res = hsr_add_port(hsr, slave[1], HSR_PT_SLAVE_B);
if (res)
goto fail;
- register_hsr_master(hsr_priv);
+ hsr->prune_timer.expires = jiffies + msecs_to_jiffies(PRUNE_PERIOD);
+ add_timer(&hsr->prune_timer);
return 0;
fail:
- restore_slaves(hsr_dev);
+ hsr_for_each_port(hsr, port)
+ hsr_del_port(port);
+
return res;
}
projects / cascardo / linux.git / blobdiff