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net/hsr: Better variable names and update of contact info.

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Signed-off-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arvid Brodin 2014-07-04 23:34:38 +02:00 committed by David S. Miller
parent b8125404c2
commit 70ebe4a471
8 changed files with 304 additions and 305 deletions
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207
net/hsr/hsr_device.c
View File

@ -1,4 +1,4 @@
/* 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
@ -6,7 +6,7 @@
* 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.
@ -71,49 +71,49 @@ void hsr_set_carrier(struct net_device *hsr_dev, struct net_device *slave1,
void hsr_check_announce(struct net_device *hsr_dev, int 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)
int hsr_get_max_mtu(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;
if (hsr->slave[0] && hsr->slave[1])
mtu_max = min(hsr->slave[0]->mtu, hsr->slave[1]->mtu);
else if (hsr->slave[0])
mtu_max = hsr->slave[0]->mtu;
else if (hsr->slave[1])
mtu_max = hsr->slave[1]->mtu;
else
mtu_max = HSR_TAGLEN;
mtu_max = HSR_HLEN;
return mtu_max - HSR_TAGLEN;
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;
hsr_priv = netdev_priv(dev);
hsr = netdev_priv(dev);
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(hsr->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;
}
@ -124,19 +124,19 @@ static int hsr_dev_change_mtu(struct net_device *dev, int new_mtu)
static int hsr_dev_open(struct net_device *dev)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
int i;
char *slave_name;
hsr_priv = netdev_priv(dev);
hsr = netdev_priv(dev);
for (i = 0; i < HSR_MAX_SLAVE; i++) {
if (hsr_priv->slave[i])
slave_name = hsr_priv->slave[i]->name;
if (hsr->slave[i])
slave_name = hsr->slave[i]->name;
else
slave_name = "null";
if (!is_slave_up(hsr_priv->slave[i]))
if (!is_slave_up(hsr->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);
}
@ -156,7 +156,7 @@ static int hsr_dev_close(struct net_device *dev)
}
static void hsr_fill_tag(struct hsr_ethhdr *hsr_ethhdr, struct hsr_priv *hsr_priv)
static void hsr_fill_tag(struct hsr_ethhdr *hsr_ethhdr, struct hsr_priv *hsr)
{
unsigned long irqflags;
@ -185,26 +185,26 @@ static void hsr_fill_tag(struct hsr_ethhdr *hsr_ethhdr, struct hsr_priv *hsr_pri
*/
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);
spin_lock_irqsave(&hsr->seqnr_lock, irqflags);
hsr_ethhdr->hsr_tag.sequence_nr = htons(hsr->sequence_nr);
hsr->sequence_nr++;
spin_unlock_irqrestore(&hsr->seqnr_lock, irqflags);
hsr_ethhdr->hsr_tag.encap_proto = hsr_ethhdr->ethhdr.h_proto;
hsr_ethhdr->ethhdr.h_proto = htons(ETH_P_PRP);
}
static int slave_xmit(struct sk_buff *skb, struct hsr_priv *hsr_priv,
static int slave_xmit(struct sk_buff *skb, struct hsr_priv *hsr,
enum hsr_dev_idx dev_idx)
{
struct hsr_ethhdr *hsr_ethhdr;
hsr_ethhdr = (struct hsr_ethhdr *) skb->data;
skb->dev = hsr_priv->slave[dev_idx];
skb->dev = hsr->slave[dev_idx];
hsr_addr_subst_dest(hsr_priv, &hsr_ethhdr->ethhdr, dev_idx);
hsr_addr_subst_dest(hsr, &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.
@ -217,36 +217,36 @@ static int slave_xmit(struct sk_buff *skb, struct hsr_priv *hsr_priv,
static int hsr_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
struct hsr_ethhdr *hsr_ethhdr;
struct sk_buff *skb2;
int res1, res2;
hsr_priv = netdev_priv(dev);
hsr = 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);
hsr_fill_tag(hsr_ethhdr, hsr);
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);
if (likely(hsr->slave[HSR_DEV_SLAVE_A]))
res1 = slave_xmit(skb, hsr, HSR_DEV_SLAVE_A);
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(skb2 && hsr->slave[HSR_DEV_SLAVE_B]))
res2 = slave_xmit(skb2, hsr, 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;
hsr->dev->stats.tx_packets++;
hsr->dev->stats.tx_bytes += skb->len;
} else {
hsr_priv->dev->stats.tx_dropped++;
hsr->dev->stats.tx_dropped++;
}
return NETDEV_TX_OK;
@ -262,21 +262,21 @@ static int hsr_header_create(struct sk_buff *skb, struct net_device *dev,
/* 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)
if (skb_headroom(skb) < HSR_HLEN + ETH_HLEN)
return -ENOBUFS;
skb_push(skb, HSR_TAGLEN);
skb_push(skb, HSR_HLEN);
/* To allow VLAN/HSR combos we should probably use
* res = dev_hard_header(skb, dev, type, daddr, saddr, len + HSR_TAGLEN);
* res = dev_hard_header(skb, dev, type, daddr, saddr, len + HSR_HLEN);
* 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);
res = eth_header(skb, dev, type, daddr, saddr, len + HSR_HLEN);
if (res <= 0)
return res;
skb_reset_mac_header(skb);
return res + HSR_TAGLEN;
return res + HSR_HLEN;
}
@ -291,7 +291,7 @@ static const struct header_ops hsr_header_ops = {
*/
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;
@ -300,7 +300,7 @@ static int hsr_pad(int size)
static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
struct sk_buff *skb;
int hlen, tlen;
struct hsr_sup_tag *hsr_stag;
@ -315,7 +315,7 @@ static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
if (skb == NULL)
return;
hsr_priv = netdev_priv(hsr_dev);
hsr = netdev_priv(hsr_dev);
skb_reserve(skb, hlen);
@ -324,7 +324,7 @@ static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
skb->priority = TC_PRIO_CONTROL;
if (dev_hard_header(skb, skb->dev, ETH_P_PRP,
hsr_priv->sup_multicast_addr,
hsr->sup_multicast_addr,
skb->dev->dev_addr, skb->len) < 0)
goto out;
@ -334,10 +334,10 @@ static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
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(&hsr->seqnr_lock, irqflags);
hsr_stag->sequence_nr = htons(hsr->sequence_nr);
hsr->sequence_nr++;
spin_unlock_irqrestore(&hsr->seqnr_lock, irqflags);
hsr_stag->HSR_TLV_Type = type;
hsr_stag->HSR_TLV_Length = 12;
@ -360,48 +360,48 @@ static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
*/
static void hsr_announce(unsigned long data)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
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++;
if (hsr->announce_count < 3) {
send_hsr_supervision_frame(hsr->dev, HSR_TLV_ANNOUNCE);
hsr->announce_count++;
} else {
send_hsr_supervision_frame(hsr_priv->dev, HSR_TLV_LIFE_CHECK);
send_hsr_supervision_frame(hsr->dev, 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);
if (is_admin_up(hsr->dev))
add_timer(&hsr->announce_timer);
}
static void restore_slaves(struct net_device *hsr_dev)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
int i;
int res;
hsr_priv = netdev_priv(hsr_dev);
hsr = netdev_priv(hsr_dev);
rtnl_lock();
/* Restore promiscuity */
for (i = 0; i < HSR_MAX_SLAVE; i++) {
if (!hsr_priv->slave[i])
if (!hsr->slave[i])
continue;
res = dev_set_promiscuity(hsr_priv->slave[i], -1);
res = dev_set_promiscuity(hsr->slave[i], -1);
if (res)
netdev_info(hsr_dev,
"Cannot restore slave promiscuity (%s, %d)\n",
hsr_priv->slave[i]->name, res);
hsr->slave[i]->name, res);
}
rtnl_unlock();
@ -409,10 +409,10 @@ static void restore_slaves(struct net_device *hsr_dev)
static void reclaim_hsr_dev(struct rcu_head *rh)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
hsr_priv = container_of(rh, struct hsr_priv, rcu_head);
free_netdev(hsr_priv->dev);
hsr = container_of(rh, struct hsr_priv, rcu_head);
free_netdev(hsr->dev);
}
@ -421,14 +421,14 @@ static void reclaim_hsr_dev(struct rcu_head *rh)
*/
static void hsr_dev_destroy(struct net_device *hsr_dev)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
hsr_priv = netdev_priv(hsr_dev);
hsr = netdev_priv(hsr_dev);
del_timer(&hsr_priv->announce_timer);
unregister_hsr_master(hsr_priv); /* calls list_del_rcu on hsr_priv */
del_timer(&hsr->announce_timer);
unregister_hsr_master(hsr); /* calls list_del_rcu on hsr */
restore_slaves(hsr_dev);
call_rcu(&hsr_priv->rcu_head, reclaim_hsr_dev); /* reclaim hsr_priv */
call_rcu(&hsr->rcu_head, reclaim_hsr_dev); /* reclaim hsr */
}
static const struct net_device_ops hsr_device_ops = {
@ -500,27 +500,27 @@ static const unsigned char def_multicast_addr[ETH_ALEN] __aligned(2) = {
int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
unsigned char multicast_spec)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
int i;
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);
hsr = netdev_priv(hsr_dev);
hsr->dev = hsr_dev;
INIT_LIST_HEAD(&hsr->node_db);
INIT_LIST_HEAD(&hsr->self_node_db);
for (i = 0; i < HSR_MAX_SLAVE; i++)
hsr_priv->slave[i] = slave[i];
hsr->slave[i] = slave[i];
spin_lock_init(&hsr_priv->seqnr_lock);
spin_lock_init(&hsr->seqnr_lock);
/* Overflow soon to find bugs easier: */
hsr_priv->sequence_nr = USHRT_MAX - 1024;
hsr->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;
init_timer(&hsr->announce_timer);
hsr->announce_timer.function = hsr_announce;
hsr->announce_timer.data = (unsigned long) hsr;
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->sup_multicast_addr, def_multicast_addr);
hsr->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;
/* FIXME: should I modify the value of these?
*
@ -547,20 +547,20 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
hsr_dev->features |= NETIF_F_VLAN_CHALLENGED;
/* Set hsr_dev's MAC address to that of mac_slave1 */
ether_addr_copy(hsr_dev->dev_addr, hsr_priv->slave[0]->dev_addr);
ether_addr_copy(hsr_dev->dev_addr, hsr->slave[0]->dev_addr);
/* Set required header length */
for (i = 0; i < HSR_MAX_SLAVE; i++) {
if (slave[i]->hard_header_len + HSR_TAGLEN >
if (slave[i]->hard_header_len + HSR_HLEN >
hsr_dev->hard_header_len)
hsr_dev->hard_header_len =
slave[i]->hard_header_len + HSR_TAGLEN;
slave[i]->hard_header_len + HSR_HLEN;
}
/* 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;
if (slave[i]->mtu - HSR_HLEN < hsr_dev->mtu)
hsr_dev->mtu = slave[i]->mtu - HSR_HLEN;
/* Make sure the 1st call to netif_carrier_on() gets through */
netif_carrier_off(hsr_dev);
@ -576,9 +576,8 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
}
/* 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);
res = hsr_create_self_node(&hsr->self_node_db, hsr_dev->dev_addr,
hsr->slave[1]->dev_addr);
if (res < 0)
goto fail;
@ -586,7 +585,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
if (res)
goto fail;
register_hsr_master(hsr_priv);
register_hsr_master(hsr);
return 0;

6
net/hsr/hsr_device.h
View File

@ -1,4 +1,4 @@
/* 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
@ -6,7 +6,7 @@
* any later version.
*
* Author(s):
* 2011-2013 Arvid Brodin, arvid.brodin@xdin.com
* 2011-2014 Arvid Brodin, arvid.brodin@alten.se
*/
#ifndef __HSR_DEVICE_H
@ -24,6 +24,6 @@ void hsr_set_carrier(struct net_device *hsr_dev, struct net_device *slave1,
struct net_device *slave2);
void hsr_check_announce(struct net_device *hsr_dev, int old_operstate);
bool is_hsr_master(struct net_device *dev);
int hsr_get_max_mtu(struct hsr_priv *hsr_priv);
int hsr_get_max_mtu(struct hsr_priv *hsr);
#endif /* __HSR_DEVICE_H */

108
net/hsr/hsr_framereg.c
View File

@ -1,4 +1,4 @@
/* 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
@ -6,7 +6,7 @@
* any later version.
*
* Author(s):
* 2011-2013 Arvid Brodin, arvid.brodin@xdin.com
* 2011-2014 Arvid Brodin, arvid.brodin@alten.se
*
* The HSR spec says never to forward the same frame twice on the same
* interface. A frame is identified by its source MAC address and its HSR
@ -23,17 +23,17 @@
#include "hsr_netlink.h"
struct node_entry {
struct list_head mac_list;
unsigned char MacAddressA[ETH_ALEN];
unsigned char MacAddressB[ETH_ALEN];
enum hsr_dev_idx AddrB_if; /* The local slave through which AddrB
* frames are received from this node
*/
unsigned long time_in[HSR_MAX_SLAVE];
bool time_in_stale[HSR_MAX_SLAVE];
u16 seq_out[HSR_MAX_DEV];
struct rcu_head rcu_head;
struct hsr_node {
struct list_head mac_list;
unsigned char MacAddressA[ETH_ALEN];
unsigned char MacAddressB[ETH_ALEN];
enum hsr_dev_idx AddrB_if;/* The local slave through which AddrB
* frames are received from this node
*/
unsigned long time_in[HSR_MAX_SLAVE];
bool time_in_stale[HSR_MAX_SLAVE];
u16 seq_out[HSR_MAX_DEV];
struct rcu_head rcu_head;
};
/* TODO: use hash lists for mac addresses (linux/jhash.h)? */
@ -42,10 +42,10 @@ struct node_entry {
/* Search for mac entry. Caller must hold rcu read lock.
*/
static struct node_entry *find_node_by_AddrA(struct list_head *node_db,
const unsigned char addr[ETH_ALEN])
static struct hsr_node *find_node_by_AddrA(struct list_head *node_db,
const unsigned char addr[ETH_ALEN])
{
struct node_entry *node;
struct hsr_node *node;
list_for_each_entry_rcu(node, node_db, mac_list) {
if (ether_addr_equal(node->MacAddressA, addr))
@ -58,10 +58,10 @@ static struct node_entry *find_node_by_AddrA(struct list_head *node_db,
/* Search for mac entry. Caller must hold rcu read lock.
*/
static struct node_entry *find_node_by_AddrB(struct list_head *node_db,
const unsigned char addr[ETH_ALEN])
static struct hsr_node *find_node_by_AddrB(struct list_head *node_db,
const unsigned char addr[ETH_ALEN])
{
struct node_entry *node;
struct hsr_node *node;
list_for_each_entry_rcu(node, node_db, mac_list) {
if (ether_addr_equal(node->MacAddressB, addr))
@ -74,9 +74,9 @@ static struct node_entry *find_node_by_AddrB(struct list_head *node_db,
/* Search for mac entry. Caller must hold rcu read lock.
*/
struct node_entry *hsr_find_node(struct list_head *node_db, struct sk_buff *skb)
struct hsr_node *hsr_find_node(struct list_head *node_db, struct sk_buff *skb)
{
struct node_entry *node;
struct hsr_node *node;
struct ethhdr *ethhdr;
if (!skb_mac_header_was_set(skb))
@ -102,7 +102,7 @@ int hsr_create_self_node(struct list_head *self_node_db,
unsigned char addr_a[ETH_ALEN],
unsigned char addr_b[ETH_ALEN])
{
struct node_entry *node, *oldnode;
struct hsr_node *node, *oldnode;
node = kmalloc(sizeof(*node), GFP_KERNEL);
if (!node)
@ -113,7 +113,7 @@ int hsr_create_self_node(struct list_head *self_node_db,
rcu_read_lock();
oldnode = list_first_or_null_rcu(self_node_db,
struct node_entry, mac_list);
struct hsr_node, mac_list);
if (oldnode) {
list_replace_rcu(&oldnode->mac_list, &node->mac_list);
rcu_read_unlock();
@ -154,10 +154,10 @@ int hsr_create_self_node(struct list_head *self_node_db,
* We also need to detect if the sender's SlaveA and SlaveB cables have been
* swapped.
*/
struct node_entry *hsr_merge_node(struct hsr_priv *hsr_priv,
struct node_entry *node,
struct sk_buff *skb,
enum hsr_dev_idx dev_idx)
struct hsr_node *hsr_merge_node(struct hsr_priv *hsr,
struct hsr_node *node,
struct sk_buff *skb,
enum hsr_dev_idx dev_idx)
{
struct hsr_sup_payload *hsr_sp;
struct hsr_ethhdr_sp *hsr_ethsup;
@ -194,7 +194,7 @@ struct node_entry *hsr_merge_node(struct hsr_priv *hsr_priv,
if (node)
return node;
node = find_node_by_AddrA(&hsr_priv->node_db, hsr_sp->MacAddressA);
node = find_node_by_AddrA(&hsr->node_db, hsr_sp->MacAddressA);
if (node) {
/* Node is known, but frame was received from an unknown
* address. Node is PICS_SUBS capable; merge its AddrB.
@ -224,7 +224,7 @@ struct node_entry *hsr_merge_node(struct hsr_priv *hsr_priv,
for (i = 0; i < HSR_MAX_DEV; i++)
node->seq_out[i] = ntohs(hsr_ethsup->hsr_sup.sequence_nr) - 1;
list_add_tail_rcu(&node->mac_list, &hsr_priv->node_db);
list_add_tail_rcu(&node->mac_list, &hsr->node_db);
return node;
}
@ -236,10 +236,10 @@ struct node_entry *hsr_merge_node(struct hsr_priv *hsr_priv,
* address with that node's "official" address (MacAddressA) so that upper
* layers recognize where it came from.
*/
void hsr_addr_subst_source(struct hsr_priv *hsr_priv, struct sk_buff *skb)
void hsr_addr_subst_source(struct hsr_priv *hsr, struct sk_buff *skb)
{
struct ethhdr *ethhdr;
struct node_entry *node;
struct hsr_node *node;
if (!skb_mac_header_was_set(skb)) {
WARN_ONCE(1, "%s: Mac header not set\n", __func__);
@ -248,7 +248,7 @@ void hsr_addr_subst_source(struct hsr_priv *hsr_priv, struct sk_buff *skb)
ethhdr = (struct ethhdr *) skb_mac_header(skb);
rcu_read_lock();
node = find_node_by_AddrB(&hsr_priv->node_db, ethhdr->h_source);
node = find_node_by_AddrB(&hsr->node_db, ethhdr->h_source);
if (node)
ether_addr_copy(ethhdr->h_source, node->MacAddressA);
rcu_read_unlock();
@ -264,13 +264,13 @@ void hsr_addr_subst_source(struct hsr_priv *hsr_priv, struct sk_buff *skb)
* This is needed to keep the packets flowing through switches that learn on
* which "side" the different interfaces are.
*/
void hsr_addr_subst_dest(struct hsr_priv *hsr_priv, struct ethhdr *ethhdr,
void hsr_addr_subst_dest(struct hsr_priv *hsr, struct ethhdr *ethhdr,
enum hsr_dev_idx dev_idx)
{
struct node_entry *node;
struct hsr_node *node;
rcu_read_lock();
node = find_node_by_AddrA(&hsr_priv->node_db, ethhdr->h_dest);
node = find_node_by_AddrA(&hsr->node_db, ethhdr->h_dest);
if (node && (node->AddrB_if == dev_idx))
ether_addr_copy(ethhdr->h_dest, node->MacAddressB);
rcu_read_unlock();
@ -295,7 +295,7 @@ static bool seq_nr_after(u16 a, u16 b)
#define seq_nr_before_or_eq(a, b) (!seq_nr_after((a), (b)))
void hsr_register_frame_in(struct node_entry *node, enum hsr_dev_idx dev_idx)
void hsr_register_frame_in(struct hsr_node *node, enum hsr_dev_idx dev_idx)
{
if ((dev_idx < 0) || (dev_idx >= HSR_MAX_SLAVE)) {
WARN_ONCE(1, "%s: Invalid dev_idx (%d)\n", __func__, dev_idx);
@ -314,7 +314,7 @@ void hsr_register_frame_in(struct node_entry *node, enum hsr_dev_idx dev_idx)
* 0 otherwise, or
* negative error code on error
*/
int hsr_register_frame_out(struct node_entry *node, enum hsr_dev_idx dev_idx,
int hsr_register_frame_out(struct hsr_node *node, enum hsr_dev_idx dev_idx,
struct sk_buff *skb)
{
struct hsr_ethhdr *hsr_ethhdr;
@ -340,7 +340,7 @@ int hsr_register_frame_out(struct node_entry *node, enum hsr_dev_idx dev_idx,
static bool is_late(struct node_entry *node, enum hsr_dev_idx dev_idx)
static bool is_late(struct hsr_node *node, enum hsr_dev_idx dev_idx)
{
enum hsr_dev_idx other;
@ -366,14 +366,14 @@ static bool is_late(struct node_entry *node, enum hsr_dev_idx dev_idx)
/* Remove stale sequence_nr records. Called by timer every
* HSR_LIFE_CHECK_INTERVAL (two seconds or so).
*/
void hsr_prune_nodes(struct hsr_priv *hsr_priv)
void hsr_prune_nodes(struct hsr_priv *hsr)
{
struct node_entry *node;
struct hsr_node *node;
unsigned long timestamp;
unsigned long time_a, time_b;
rcu_read_lock();
list_for_each_entry_rcu(node, &hsr_priv->node_db, mac_list) {
list_for_each_entry_rcu(node, &hsr->node_db, mac_list) {
/* Shorthand */
time_a = node->time_in[HSR_DEV_SLAVE_A];
time_b = node->time_in[HSR_DEV_SLAVE_B];
@ -399,17 +399,17 @@ void hsr_prune_nodes(struct hsr_priv *hsr_priv)
msecs_to_jiffies(1.5*MAX_SLAVE_DIFF))) {
if (is_late(node, HSR_DEV_SLAVE_A))
hsr_nl_ringerror(hsr_priv, node->MacAddressA,
hsr_nl_ringerror(hsr, node->MacAddressA,
HSR_DEV_SLAVE_A);
else if (is_late(node, HSR_DEV_SLAVE_B))
hsr_nl_ringerror(hsr_priv, node->MacAddressA,
hsr_nl_ringerror(hsr, node->MacAddressA,
HSR_DEV_SLAVE_B);
}
/* Prune old entries */
if (time_is_before_jiffies(timestamp +
msecs_to_jiffies(HSR_NODE_FORGET_TIME))) {
hsr_nl_nodedown(hsr_priv, node->MacAddressA);
hsr_nl_nodedown(hsr, node->MacAddressA);
list_del_rcu(&node->mac_list);
/* Note that we need to free this entry later: */
kfree_rcu(node, rcu_head);
@ -419,21 +419,21 @@ void hsr_prune_nodes(struct hsr_priv *hsr_priv)
}
void *hsr_get_next_node(struct hsr_priv *hsr_priv, void *_pos,
void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
unsigned char addr[ETH_ALEN])
{
struct node_entry *node;
struct hsr_node *node;
if (!_pos) {
node = list_first_or_null_rcu(&hsr_priv->node_db,
struct node_entry, mac_list);
node = list_first_or_null_rcu(&hsr->node_db,
struct hsr_node, mac_list);
if (node)
ether_addr_copy(addr, node->MacAddressA);
return node;
}
node = _pos;
list_for_each_entry_continue_rcu(node, &hsr_priv->node_db, mac_list) {
list_for_each_entry_continue_rcu(node, &hsr->node_db, mac_list) {
ether_addr_copy(addr, node->MacAddressA);
return node;
}
@ -442,7 +442,7 @@ void *hsr_get_next_node(struct hsr_priv *hsr_priv, void *_pos,
}
int hsr_get_node_data(struct hsr_priv *hsr_priv,
int hsr_get_node_data(struct hsr_priv *hsr,
const unsigned char *addr,
unsigned char addr_b[ETH_ALEN],
unsigned int *addr_b_ifindex,
@ -451,12 +451,12 @@ int hsr_get_node_data(struct hsr_priv *hsr_priv,
int *if2_age,
u16 *if2_seq)
{
struct node_entry *node;
struct hsr_node *node;
unsigned long tdiff;
rcu_read_lock();
node = find_node_by_AddrA(&hsr_priv->node_db, addr);
node = find_node_by_AddrA(&hsr->node_db, addr);
if (!node) {
rcu_read_unlock();
return -ENOENT; /* No such entry */
@ -488,8 +488,8 @@ int hsr_get_node_data(struct hsr_priv *hsr_priv,
*if1_seq = node->seq_out[HSR_DEV_SLAVE_B];
*if2_seq = node->seq_out[HSR_DEV_SLAVE_A];
if ((node->AddrB_if != HSR_DEV_NONE) && hsr_priv->slave[node->AddrB_if])
*addr_b_ifindex = hsr_priv->slave[node->AddrB_if]->ifindex;
if ((node->AddrB_if != HSR_DEV_NONE) && hsr->slave[node->AddrB_if])
*addr_b_ifindex = hsr->slave[node->AddrB_if]->ifindex;
else
*addr_b_ifindex = -1;

36
net/hsr/hsr_framereg.h
View File

@ -1,4 +1,4 @@
/* 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
@ -6,42 +6,42 @@
* any later version.
*
* Author(s):
* 2011-2013 Arvid Brodin, arvid.brodin@xdin.com
* 2011-2014 Arvid Brodin, arvid.brodin@alten.se
*/
#ifndef _HSR_FRAMEREG_H
#define _HSR_FRAMEREG_H
#ifndef __HSR_FRAMEREG_H
#define __HSR_FRAMEREG_H
#include "hsr_main.h"
struct node_entry;
struct hsr_node;
struct node_entry *hsr_find_node(struct list_head *node_db, struct sk_buff *skb);
struct hsr_node *hsr_find_node(struct list_head *node_db, struct sk_buff *skb);
struct node_entry *hsr_merge_node(struct hsr_priv *hsr_priv,
struct node_entry *node,
struct sk_buff *skb,
enum hsr_dev_idx dev_idx);
struct hsr_node *hsr_merge_node(struct hsr_priv *hsr,
struct hsr_node *node,
struct sk_buff *skb,
enum hsr_dev_idx dev_idx);
void hsr_addr_subst_source(struct hsr_priv *hsr_priv, struct sk_buff *skb);
void hsr_addr_subst_dest(struct hsr_priv *hsr_priv, struct ethhdr *ethhdr,
void hsr_addr_subst_source(struct hsr_priv *hsr, struct sk_buff *skb);
void hsr_addr_subst_dest(struct hsr_priv *hsr, struct ethhdr *ethhdr,
enum hsr_dev_idx dev_idx);
void hsr_register_frame_in(struct node_entry *node, enum hsr_dev_idx dev_idx);
void hsr_register_frame_in(struct hsr_node *node, enum hsr_dev_idx dev_idx);
int hsr_register_frame_out(struct node_entry *node, enum hsr_dev_idx dev_idx,
int hsr_register_frame_out(struct hsr_node *node, enum hsr_dev_idx dev_idx,
struct sk_buff *skb);
void hsr_prune_nodes(struct hsr_priv *hsr_priv);
void hsr_prune_nodes(struct hsr_priv *hsr);
int hsr_create_self_node(struct list_head *self_node_db,
unsigned char addr_a[ETH_ALEN],
unsigned char addr_b[ETH_ALEN]);
void *hsr_get_next_node(struct hsr_priv *hsr_priv, void *_pos,
void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
unsigned char addr[ETH_ALEN]);
int hsr_get_node_data(struct hsr_priv *hsr_priv,
int hsr_get_node_data(struct hsr_priv *hsr,
const unsigned char *addr,
unsigned char addr_b[ETH_ALEN],
unsigned int *addr_b_ifindex,
@ -50,4 +50,4 @@ int hsr_get_node_data(struct hsr_priv *hsr_priv,
int *if2_age,
u16 *if2_seq);
#endif /* _HSR_FRAMEREG_H */
#endif /* __HSR_FRAMEREG_H */

170
net/hsr/hsr_main.c
View File

@ -1,4 +1,4 @@
/* 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
@ -6,7 +6,7 @@
* any later version.
*
* Author(s):
* 2011-2013 Arvid Brodin, arvid.brodin@xdin.com
* 2011-2014 Arvid Brodin, arvid.brodin@alten.se
*
* In addition to routines for registering and unregistering HSR support, this
* file also contains the receive routine that handles all incoming frames with
@ -26,30 +26,30 @@
/* List of all registered virtual HSR devices */
static LIST_HEAD(hsr_list);
void register_hsr_master(struct hsr_priv *hsr_priv)
void register_hsr_master(struct hsr_priv *hsr)
{
list_add_tail_rcu(&hsr_priv->hsr_list, &hsr_list);
list_add_tail_rcu(&hsr->hsr_list, &hsr_list);
}
void unregister_hsr_master(struct hsr_priv *hsr_priv)
void unregister_hsr_master(struct hsr_priv *hsr)
{
struct hsr_priv *hsr_priv_it;
struct hsr_priv *hsr_it;
list_for_each_entry(hsr_priv_it, &hsr_list, hsr_list)
if (hsr_priv_it == hsr_priv) {
list_del_rcu(&hsr_priv_it->hsr_list);
list_for_each_entry(hsr_it, &hsr_list, hsr_list)
if (hsr_it == hsr) {
list_del_rcu(&hsr_it->hsr_list);
return;
}
}
bool is_hsr_slave(struct net_device *dev)
{
struct hsr_priv *hsr_priv_it;
struct hsr_priv *hsr_it;
list_for_each_entry_rcu(hsr_priv_it, &hsr_list, hsr_list) {
if (dev == hsr_priv_it->slave[0])
list_for_each_entry_rcu(hsr_it, &hsr_list, hsr_list) {
if (dev == hsr_it->slave[0])
return true;
if (dev == hsr_priv_it->slave[1])
if (dev == hsr_it->slave[1])
return true;
}
@ -62,14 +62,14 @@ bool is_hsr_slave(struct net_device *dev)
*/
static struct hsr_priv *get_hsr_master(struct net_device *dev)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
rcu_read_lock();
list_for_each_entry_rcu(hsr_priv, &hsr_list, hsr_list)
if ((dev == hsr_priv->slave[0]) ||
(dev == hsr_priv->slave[1])) {
list_for_each_entry_rcu(hsr, &hsr_list, hsr_list)
if ((dev == hsr->slave[0]) ||
(dev == hsr->slave[1])) {
rcu_read_unlock();
return hsr_priv;
return hsr;
}
rcu_read_unlock();
@ -80,13 +80,13 @@ static struct hsr_priv *get_hsr_master(struct net_device *dev)
/* If dev is a HSR slave device, return the other slave device. Return NULL
* otherwise.
*/
static struct net_device *get_other_slave(struct hsr_priv *hsr_priv,
static struct net_device *get_other_slave(struct hsr_priv *hsr,
struct net_device *dev)
{
if (dev == hsr_priv->slave[0])
return hsr_priv->slave[1];
if (dev == hsr_priv->slave[1])
return hsr_priv->slave[0];
if (dev == hsr->slave[0])
return hsr->slave[1];
if (dev == hsr->slave[1])
return hsr->slave[0];
return NULL;
}
@ -96,7 +96,7 @@ static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event,
void *ptr)
{
struct net_device *slave, *other_slave;
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
int old_operstate;
int mtu_max;
int res;
@ -104,68 +104,68 @@ static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event,
dev = netdev_notifier_info_to_dev(ptr);
hsr_priv = get_hsr_master(dev);
if (hsr_priv) {
hsr = get_hsr_master(dev);
if (hsr) {
/* dev is a slave device */
slave = dev;
other_slave = get_other_slave(hsr_priv, slave);
other_slave = get_other_slave(hsr, slave);
} else {
if (!is_hsr_master(dev))
return NOTIFY_DONE;
hsr_priv = netdev_priv(dev);
slave = hsr_priv->slave[0];
other_slave = hsr_priv->slave[1];
hsr = netdev_priv(dev);
slave = hsr->slave[0];
other_slave = hsr->slave[1];
}
switch (event) {
case NETDEV_UP: /* Administrative state DOWN */
case NETDEV_DOWN: /* Administrative state UP */
case NETDEV_CHANGE: /* Link (carrier) state changes */
old_operstate = hsr_priv->dev->operstate;
hsr_set_carrier(hsr_priv->dev, slave, other_slave);
old_operstate = hsr->dev->operstate;
hsr_set_carrier(hsr->dev, slave, other_slave);
/* netif_stacked_transfer_operstate() cannot be used here since
* it doesn't set IF_OPER_LOWERLAYERDOWN (?)
*/
hsr_set_operstate(hsr_priv->dev, slave, other_slave);
hsr_check_announce(hsr_priv->dev, old_operstate);
hsr_set_operstate(hsr->dev, slave, other_slave);
hsr_check_announce(hsr->dev, old_operstate);
break;
case NETDEV_CHANGEADDR:
/* This should not happen since there's no ndo_set_mac_address()
* for HSR devices - i.e. not supported.
*/
if (dev == hsr_priv->dev)
if (dev == hsr->dev)
break;
if (dev == hsr_priv->slave[0])
ether_addr_copy(hsr_priv->dev->dev_addr,
hsr_priv->slave[0]->dev_addr);
if (dev == hsr->slave[0])
ether_addr_copy(hsr->dev->dev_addr,
hsr->slave[0]->dev_addr);
/* Make sure we recognize frames from ourselves in hsr_rcv() */
res = hsr_create_self_node(&hsr_priv->self_node_db,
hsr_priv->dev->dev_addr,
hsr_priv->slave[1] ?
hsr_priv->slave[1]->dev_addr :
hsr_priv->dev->dev_addr);
res = hsr_create_self_node(&hsr->self_node_db,
hsr->dev->dev_addr,
hsr->slave[1] ?
hsr->slave[1]->dev_addr :
hsr->dev->dev_addr);
if (res)
netdev_warn(hsr_priv->dev,
netdev_warn(hsr->dev,
"Could not update HSR node address.\n");
if (dev == hsr_priv->slave[0])
call_netdevice_notifiers(NETDEV_CHANGEADDR, hsr_priv->dev);
if (dev == hsr->slave[0])
call_netdevice_notifiers(NETDEV_CHANGEADDR, hsr->dev);
break;
case NETDEV_CHANGEMTU:
if (dev == hsr_priv->dev)
if (dev == hsr->dev)
break; /* Handled in ndo_change_mtu() */
mtu_max = hsr_get_max_mtu(hsr_priv);
if (hsr_priv->dev->mtu > mtu_max)
dev_set_mtu(hsr_priv->dev, mtu_max);
mtu_max = hsr_get_max_mtu(hsr);
if (hsr->dev->mtu > mtu_max)
dev_set_mtu(hsr->dev, mtu_max);
break;
case NETDEV_UNREGISTER:
if (dev == hsr_priv->slave[0])
hsr_priv->slave[0] = NULL;
if (dev == hsr_priv->slave[1])
hsr_priv->slave[1] = NULL;
if (dev == hsr->slave[0])
hsr->slave[0] = NULL;
if (dev == hsr->slave[1])
hsr->slave[1] = NULL;
/* There should really be a way to set a new slave device... */
@ -185,11 +185,11 @@ static struct timer_list prune_timer;
static void prune_nodes_all(unsigned long data)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
rcu_read_lock();
list_for_each_entry_rcu(hsr_priv, &hsr_list, hsr_list)
hsr_prune_nodes(hsr_priv);
list_for_each_entry_rcu(hsr, &hsr_list, hsr_list)
hsr_prune_nodes(hsr);
rcu_read_unlock();
prune_timer.expires = jiffies + msecs_to_jiffies(PRUNE_PERIOD);
@ -207,12 +207,12 @@ static struct sk_buff *hsr_pull_tag(struct sk_buff *skb)
goto err_free;
skb = skb2;
if (unlikely(!pskb_may_pull(skb, HSR_TAGLEN)))
if (unlikely(!pskb_may_pull(skb, HSR_HLEN)))
goto err_free;
hsr_tag = (struct hsr_tag *) skb->data;
skb->protocol = hsr_tag->encap_proto;
skb_pull(skb, HSR_TAGLEN);
skb_pull(skb, HSR_HLEN);
return skb;
@ -237,12 +237,12 @@ static struct sk_buff *hsr_pull_tag(struct sk_buff *skb)
* 3) Allow different MAC addresses for the two slave interfaces, using the
* MacAddressA field.
*/
static bool is_supervision_frame(struct hsr_priv *hsr_priv, struct sk_buff *skb)
static bool is_supervision_frame(struct hsr_priv *hsr, struct sk_buff *skb)
{
struct hsr_sup_tag *hsr_stag;
if (!ether_addr_equal(eth_hdr(skb)->h_dest,
hsr_priv->sup_multicast_addr))
hsr->sup_multicast_addr))
return false;
hsr_stag = (struct hsr_sup_tag *) skb->data;
@ -263,25 +263,25 @@ static bool is_supervision_frame(struct hsr_priv *hsr_priv, struct sk_buff *skb)
static int hsr_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
struct net_device *other_slave;
struct node_entry *node;
struct hsr_node *node;
bool deliver_to_self;
struct sk_buff *skb_deliver;
enum hsr_dev_idx dev_in_idx, dev_other_idx;
bool dup_out;
int ret;
hsr_priv = get_hsr_master(dev);
hsr = get_hsr_master(dev);
if (!hsr_priv) {
if (!hsr) {
/* Non-HSR-slave device 'dev' is connected to a HSR network */
kfree_skb(skb);
dev->stats.rx_errors++;
return NET_RX_SUCCESS;
}
if (dev == hsr_priv->slave[0]) {
if (dev == hsr->slave[0]) {
dev_in_idx = HSR_DEV_SLAVE_A;
dev_other_idx = HSR_DEV_SLAVE_B;
} else {
@ -289,7 +289,7 @@ static int hsr_rcv(struct sk_buff *skb, struct net_device *dev,
dev_other_idx = HSR_DEV_SLAVE_A;
}
node = hsr_find_node(&hsr_priv->self_node_db, skb);
node = hsr_find_node(&hsr->self_node_db, skb);
if (node) {
/* Always kill frames sent by ourselves */
kfree_skb(skb);
@ -303,22 +303,22 @@ static int hsr_rcv(struct sk_buff *skb, struct net_device *dev,
(skb->pkt_type == PACKET_BROADCAST))
deliver_to_self = true;
else if (ether_addr_equal(eth_hdr(skb)->h_dest,
hsr_priv->dev->dev_addr)) {
hsr->dev->dev_addr)) {
skb->pkt_type = PACKET_HOST;
deliver_to_self = true;
}
rcu_read_lock(); /* node_db */
node = hsr_find_node(&hsr_priv->node_db, skb);
node = hsr_find_node(&hsr->node_db, skb);
if (is_supervision_frame(hsr_priv, skb)) {
if (is_supervision_frame(hsr, skb)) {
skb_pull(skb, sizeof(struct hsr_sup_tag));
node = hsr_merge_node(hsr_priv, node, skb, dev_in_idx);
node = hsr_merge_node(hsr, node, skb, dev_in_idx);
if (!node) {
rcu_read_unlock(); /* node_db */
kfree_skb(skb);
hsr_priv->dev->stats.rx_dropped++;
hsr->dev->stats.rx_dropped++;
return NET_RX_DROP;
}
skb_push(skb, sizeof(struct hsr_sup_tag));
@ -345,7 +345,7 @@ static int hsr_rcv(struct sk_buff *skb, struct net_device *dev,
/* Forward this frame? */
if (!dup_out && (skb->pkt_type != PACKET_HOST))
other_slave = get_other_slave(hsr_priv, dev);
other_slave = get_other_slave(hsr, dev);
else
other_slave = NULL;
@ -368,7 +368,7 @@ static int hsr_rcv(struct sk_buff *skb, struct net_device *dev,
skb_deliver = pskb_copy(skb, GFP_ATOMIC);
if (!skb_deliver) {
deliver_to_self = false;
hsr_priv->dev->stats.rx_dropped++;
hsr->dev->stats.rx_dropped++;
}
}
@ -377,7 +377,7 @@ static int hsr_rcv(struct sk_buff *skb, struct net_device *dev,
skb_deliver = hsr_pull_tag(skb_deliver);
if (!skb_deliver) {
hsr_priv->dev->stats.rx_dropped++;
hsr->dev->stats.rx_dropped++;
goto forward;
}
#if !defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)
@ -386,7 +386,7 @@ static int hsr_rcv(struct sk_buff *skb, struct net_device *dev,
* tag. In practice, this removes/overwrites the HSR tag in
* the header and restores a "standard" packet.
*/
memmove(skb_deliver->data - HSR_TAGLEN, skb_deliver->data,
memmove(skb_deliver->data - HSR_HLEN, skb_deliver->data,
skb_headlen(skb_deliver));
/* Adjust skb members so they correspond with the move above.
@ -397,20 +397,20 @@ static int hsr_rcv(struct sk_buff *skb, struct net_device *dev,
* the mac header nor the head. So we only need to adjust data
* and tail:
*/
skb_deliver->data -= HSR_TAGLEN;
skb_deliver->tail -= HSR_TAGLEN;
skb_deliver->data -= HSR_HLEN;
skb_deliver->tail -= HSR_HLEN;
#endif
skb_deliver->dev = hsr_priv->dev;
hsr_addr_subst_source(hsr_priv, skb_deliver);
skb_deliver->dev = hsr->dev;
hsr_addr_subst_source(hsr, skb_deliver);
multicast_frame = (skb_deliver->pkt_type == PACKET_MULTICAST);
ret = netif_rx(skb_deliver);
if (ret == NET_RX_DROP) {
hsr_priv->dev->stats.rx_dropped++;
hsr->dev->stats.rx_dropped++;
} else {
hsr_priv->dev->stats.rx_packets++;
hsr_priv->dev->stats.rx_bytes += skb->len;
hsr->dev->stats.rx_packets++;
hsr->dev->stats.rx_bytes += skb->len;
if (multicast_frame)
hsr_priv->dev->stats.multicast++;
hsr->dev->stats.multicast++;
}
}
@ -439,7 +439,7 @@ static int __init hsr_init(void)
{
int res;
BUILD_BUG_ON(sizeof(struct hsr_tag) != HSR_TAGLEN);
BUILD_BUG_ON(sizeof(struct hsr_tag) != HSR_HLEN);
dev_add_pack(&hsr_pt);

20
net/hsr/hsr_main.h
View File

@ -1,4 +1,4 @@
/* 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
@ -6,11 +6,11 @@
* any later version.
*
* Author(s):
* 2011-2013 Arvid Brodin, arvid.brodin@xdin.com
* 2011-2014 Arvid Brodin, arvid.brodin@alten.se
*/
#ifndef _HSR_PRIVATE_H
#define _HSR_PRIVATE_H
#ifndef __HSR_PRIVATE_H
#define __HSR_PRIVATE_H
#include <linux/netdevice.h>
#include <linux/list.h>
@ -46,16 +46,16 @@
* path, LSDU_size, sequence Nr }. But we let eth_header() create { h_dest,
* h_source, h_proto = 0x88FB }, and add { path, LSDU_size, sequence Nr,
* encapsulated protocol } instead.
*
* Field names as defined in the IEC:2010 standard for HSR.
*/
#define HSR_TAGLEN 6
/* Field names below as defined in the IEC:2010 standard for HSR. */
struct hsr_tag {
__be16 path_and_LSDU_size;
__be16 sequence_nr;
__be16 encap_proto;
} __packed;
#define HSR_HLEN 6
/* The helper functions below assumes that 'path' occupies the 4 most
* significant bits of the 16-bit field shared by 'path' and 'LSDU_size' (or
@ -159,8 +159,8 @@ struct hsr_priv {
unsigned char sup_multicast_addr[ETH_ALEN];
};
void register_hsr_master(struct hsr_priv *hsr_priv);
void unregister_hsr_master(struct hsr_priv *hsr_priv);
void register_hsr_master(struct hsr_priv *hsr);
void unregister_hsr_master(struct hsr_priv *hsr);
bool is_hsr_slave(struct net_device *dev);
#endif /* _HSR_PRIVATE_H */
#endif /* __HSR_PRIVATE_H */

54
net/hsr/hsr_netlink.c
View File

@ -1,4 +1,4 @@
/* 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
@ -6,7 +6,7 @@
* any later version.
*
* Author(s):
* 2011-2013 Arvid Brodin, arvid.brodin@xdin.com
* 2011-2014 Arvid Brodin, arvid.brodin@alten.se
*
* Routines for handling Netlink messages for HSR.
*/
@ -63,21 +63,21 @@ static int hsr_newlink(struct net *src_net, struct net_device *dev,
static int hsr_fill_info(struct sk_buff *skb, const struct net_device *dev)
{
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
hsr_priv = netdev_priv(dev);
hsr = netdev_priv(dev);
if (hsr_priv->slave[0])
if (nla_put_u32(skb, IFLA_HSR_SLAVE1, hsr_priv->slave[0]->ifindex))
if (hsr->slave[0])
if (nla_put_u32(skb, IFLA_HSR_SLAVE1, hsr->slave[0]->ifindex))
goto nla_put_failure;
if (hsr_priv->slave[1])
if (nla_put_u32(skb, IFLA_HSR_SLAVE2, hsr_priv->slave[1]->ifindex))
if (hsr->slave[1])
if (nla_put_u32(skb, IFLA_HSR_SLAVE2, hsr->slave[1]->ifindex))
goto nla_put_failure;
if (nla_put(skb, IFLA_HSR_SUPERVISION_ADDR, ETH_ALEN,
hsr_priv->sup_multicast_addr) ||
nla_put_u16(skb, IFLA_HSR_SEQ_NR, hsr_priv->sequence_nr))
hsr->sup_multicast_addr) ||
nla_put_u16(skb, IFLA_HSR_SEQ_NR, hsr->sequence_nr))
goto nla_put_failure;
return 0;
@ -128,7 +128,7 @@ static const struct genl_multicast_group hsr_mcgrps[] = {
* over one of the slave interfaces. This would indicate an open network ring
* (i.e. a link has failed somewhere).
*/
void hsr_nl_ringerror(struct hsr_priv *hsr_priv, unsigned char addr[ETH_ALEN],
void hsr_nl_ringerror(struct hsr_priv *hsr, unsigned char addr[ETH_ALEN],
enum hsr_dev_idx dev_idx)
{
struct sk_buff *skb;
@ -148,8 +148,8 @@ void hsr_nl_ringerror(struct hsr_priv *hsr_priv, unsigned char addr[ETH_ALEN],
if (res < 0)
goto nla_put_failure;
if (hsr_priv->slave[dev_idx])
ifindex = hsr_priv->slave[dev_idx]->ifindex;
if (hsr->slave[dev_idx])
ifindex = hsr->slave[dev_idx]->ifindex;
else
ifindex = -1;
res = nla_put_u32(skb, HSR_A_IFINDEX, ifindex);
@ -165,13 +165,13 @@ void hsr_nl_ringerror(struct hsr_priv *hsr_priv, unsigned char addr[ETH_ALEN],
kfree_skb(skb);
fail:
netdev_warn(hsr_priv->dev, "Could not send HSR ring error message\n");
netdev_warn(hsr->dev, "Could not send HSR ring error message\n");
}
/* This is called when we haven't heard from the node with MAC address addr for
* some time (just before the node is removed from the node table/list).
*/
void hsr_nl_nodedown(struct hsr_priv *hsr_priv, unsigned char addr[ETH_ALEN])
void hsr_nl_nodedown(struct hsr_priv *hsr, unsigned char addr[ETH_ALEN])
{
struct sk_buff *skb;
void *msg_head;
@ -199,7 +199,7 @@ void hsr_nl_nodedown(struct hsr_priv *hsr_priv, unsigned char addr[ETH_ALEN])
kfree_skb(skb);
fail:
netdev_warn(hsr_priv->dev, "Could not send HSR node down\n");
netdev_warn(hsr->dev, "Could not send HSR node down\n");
}
@ -220,7 +220,7 @@ static int hsr_get_node_status(struct sk_buff *skb_in, struct genl_info *info)
/* For sending */
struct sk_buff *skb_out;
void *msg_head;
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
unsigned char hsr_node_addr_b[ETH_ALEN];
int hsr_node_if1_age;
u16 hsr_node_if1_seq;
@ -267,8 +267,8 @@ static int hsr_get_node_status(struct sk_buff *skb_in, struct genl_info *info)
if (res < 0)
goto nla_put_failure;
hsr_priv = netdev_priv(hsr_dev);
res = hsr_get_node_data(hsr_priv,
hsr = netdev_priv(hsr_dev);
res = hsr_get_node_data(hsr,
(unsigned char *) nla_data(info->attrs[HSR_A_NODE_ADDR]),
hsr_node_addr_b,
&addr_b_ifindex,
@ -301,9 +301,9 @@ static int hsr_get_node_status(struct sk_buff *skb_in, struct genl_info *info)
res = nla_put_u16(skb_out, HSR_A_IF1_SEQ, hsr_node_if1_seq);
if (res < 0)
goto nla_put_failure;
if (hsr_priv->slave[0])
if (hsr->slave[0])
res = nla_put_u32(skb_out, HSR_A_IF1_IFINDEX,
hsr_priv->slave[0]->ifindex);
hsr->slave[0]->ifindex);
if (res < 0)
goto nla_put_failure;
@ -313,9 +313,9 @@ static int hsr_get_node_status(struct sk_buff *skb_in, struct genl_info *info)
res = nla_put_u16(skb_out, HSR_A_IF2_SEQ, hsr_node_if2_seq);
if (res < 0)
goto nla_put_failure;
if (hsr_priv->slave[1])
if (hsr->slave[1])
res = nla_put_u32(skb_out, HSR_A_IF2_IFINDEX,
hsr_priv->slave[1]->ifindex);
hsr->slave[1]->ifindex);
genlmsg_end(skb_out, msg_head);
genlmsg_unicast(genl_info_net(info), skb_out, info->snd_portid);
@ -345,7 +345,7 @@ static int hsr_get_node_list(struct sk_buff *skb_in, struct genl_info *info)
/* For sending */
struct sk_buff *skb_out;
void *msg_head;
struct hsr_priv *hsr_priv;
struct hsr_priv *hsr;
void *pos;
unsigned char addr[ETH_ALEN];
int res;
@ -385,17 +385,17 @@ static int hsr_get_node_list(struct sk_buff *skb_in, struct genl_info *info)
if (res < 0)
goto nla_put_failure;
hsr_priv = netdev_priv(hsr_dev);
hsr = netdev_priv(hsr_dev);
rcu_read_lock();
pos = hsr_get_next_node(hsr_priv, NULL, addr);
pos = hsr_get_next_node(hsr, NULL, addr);
while (pos) {
res = nla_put(skb_out, HSR_A_NODE_ADDR, ETH_ALEN, addr);
if (res < 0) {
rcu_read_unlock();
goto nla_put_failure;
}
pos = hsr_get_next_node(hsr_priv, pos, addr);
pos = hsr_get_next_node(hsr, pos, addr);
}
rcu_read_unlock();

8
net/hsr/hsr_netlink.h
View File

@ -1,4 +1,4 @@
/* 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
@ -6,7 +6,7 @@
* any later version.
*
* Author(s):
* 2011-2013 Arvid Brodin, arvid.brodin@xdin.com
* 2011-2014 Arvid Brodin, arvid.brodin@alten.se
*/
#ifndef __HSR_NETLINK_H
@ -21,9 +21,9 @@ struct hsr_priv;
int __init hsr_netlink_init(void);
void __exit hsr_netlink_exit(void);
void hsr_nl_ringerror(struct hsr_priv *hsr_priv, unsigned char addr[ETH_ALEN],
void hsr_nl_ringerror(struct hsr_priv *hsr, unsigned char addr[ETH_ALEN],
int dev_idx);
void hsr_nl_nodedown(struct hsr_priv *hsr_priv, unsigned char addr[ETH_ALEN]);
void hsr_nl_nodedown(struct hsr_priv *hsr, unsigned char addr[ETH_ALEN]);
void hsr_nl_framedrop(int dropcount, int dev_idx);
void hsr_nl_linkdown(int dev_idx);