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net: hsr: Send supervisory frames to HSR network with ProxyNodeTable data

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This patch provides support for sending supervision HSR frames with
MAC addresses stored in ProxyNodeTable when RedBox (i.e. HSR-SAN) is
enabled.

Supervision frames with RedBox MAC address (appended as second TLV)
are only send for ProxyNodeTable nodes.

This patch series shall be tested with hsr_redbox.sh script.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lukasz Majewski 2024-06-10 15:39:14 +02:00 committed by David S. Miller
parent 6e7e2e7e63
commit 5f703ce5c9
6 changed files with 105 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
net/hsr/hsr_device.c
View File

@ -73,9 +73,15 @@ static void hsr_check_announce(struct net_device *hsr_dev)
mod_timer(&hsr->announce_timer, jiffies +
msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL));
}
if (hsr->redbox && !timer_pending(&hsr->announce_proxy_timer))
mod_timer(&hsr->announce_proxy_timer, jiffies +
msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL) / 2);
} else {
/* Deactivate the announce timer */
timer_delete(&hsr->announce_timer);
if (hsr->redbox)
timer_delete(&hsr->announce_proxy_timer);
}
}
@ -279,10 +285,11 @@ out:
return NULL;
}
static void send_hsr_supervision_frame(struct hsr_port *master,
unsigned long *interval)
static void send_hsr_supervision_frame(struct hsr_port *port,
unsigned long *interval,
const unsigned char *addr)
{
struct hsr_priv *hsr = master->hsr;
struct hsr_priv *hsr = port->hsr;
__u8 type = HSR_TLV_LIFE_CHECK;
struct hsr_sup_payload *hsr_sp;
struct hsr_sup_tlv *hsr_stlv;
@ -296,9 +303,9 @@ static void send_hsr_supervision_frame(struct hsr_port *master,
hsr->announce_count++;
}
skb = hsr_init_skb(master);
skb = hsr_init_skb(port);
if (!skb) {
netdev_warn_once(master->dev, "HSR: Could not send supervision frame\n");
netdev_warn_once(port->dev, "HSR: Could not send supervision frame\n");
return;
}
@ -321,11 +328,12 @@ static void send_hsr_supervision_frame(struct hsr_port *master,
hsr_stag->tlv.HSR_TLV_length = hsr->prot_version ?
sizeof(struct hsr_sup_payload) : 12;
/* Payload: MacAddressA */
/* Payload: MacAddressA / SAN MAC from ProxyNodeTable */
hsr_sp = skb_put(skb, sizeof(struct hsr_sup_payload));
ether_addr_copy(hsr_sp->macaddress_A, master->dev->dev_addr);
ether_addr_copy(hsr_sp->macaddress_A, addr);
if (hsr->redbox) {
if (hsr->redbox &&
hsr_is_node_in_db(&hsr->proxy_node_db, addr)) {
hsr_stlv = skb_put(skb, sizeof(struct hsr_sup_tlv));
hsr_stlv->HSR_TLV_type = PRP_TLV_REDBOX_MAC;
hsr_stlv->HSR_TLV_length = sizeof(struct hsr_sup_payload);
@ -340,13 +348,14 @@ static void send_hsr_supervision_frame(struct hsr_port *master,
return;
}
hsr_forward_skb(skb, master);
hsr_forward_skb(skb, port);
spin_unlock_bh(&hsr->seqnr_lock);
return;
}
static void send_prp_supervision_frame(struct hsr_port *master,
unsigned long *interval)
unsigned long *interval,
const unsigned char *addr)
{
struct hsr_priv *hsr = master->hsr;
struct hsr_sup_payload *hsr_sp;
@ -396,7 +405,7 @@ static void hsr_announce(struct timer_list *t)
rcu_read_lock();
master = hsr_port_get_hsr(hsr, HSR_PT_MASTER);
hsr->proto_ops->send_sv_frame(master, &interval);
hsr->proto_ops->send_sv_frame(master, &interval, master->dev->dev_addr);
if (is_admin_up(master->dev))
mod_timer(&hsr->announce_timer, jiffies + interval);
@ -404,6 +413,37 @@ static void hsr_announce(struct timer_list *t)
rcu_read_unlock();
}
/* Announce (supervision frame) timer function for RedBox
*/
static void hsr_proxy_announce(struct timer_list *t)
{
struct hsr_priv *hsr = from_timer(hsr, t, announce_proxy_timer);
struct hsr_port *interlink;
unsigned long interval = 0;
struct hsr_node *node;
rcu_read_lock();
/* RedBOX sends supervisory frames to HSR network with MAC addresses
* of SAN nodes stored in ProxyNodeTable.
*/
interlink = hsr_port_get_hsr(hsr, HSR_PT_INTERLINK);
list_for_each_entry_rcu(node, &hsr->proxy_node_db, mac_list) {
if (hsr_addr_is_redbox(hsr, node->macaddress_A))
continue;
hsr->proto_ops->send_sv_frame(interlink, &interval,
node->macaddress_A);
}
if (is_admin_up(interlink->dev)) {
if (!interval)
interval = msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL);
mod_timer(&hsr->announce_proxy_timer, jiffies + interval);
}
rcu_read_unlock();
}
void hsr_del_ports(struct hsr_priv *hsr)
{
struct hsr_port *port;
@ -590,6 +630,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
timer_setup(&hsr->announce_timer, hsr_announce, 0);
timer_setup(&hsr->prune_timer, hsr_prune_nodes, 0);
timer_setup(&hsr->prune_proxy_timer, hsr_prune_proxy_nodes, 0);
timer_setup(&hsr->announce_proxy_timer, hsr_proxy_announce, 0);
ether_addr_copy(hsr->sup_multicast_addr, def_multicast_addr);
hsr->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;

37
net/hsr/hsr_forward.c
View File

@ -117,6 +117,35 @@ static bool is_supervision_frame(struct hsr_priv *hsr, struct sk_buff *skb)
return true;
}
static bool is_proxy_supervision_frame(struct hsr_priv *hsr,
struct sk_buff *skb)
{
struct hsr_sup_payload *payload;
struct ethhdr *eth_hdr;
u16 total_length = 0;
eth_hdr = (struct ethhdr *)skb_mac_header(skb);
/* Get the HSR protocol revision. */
if (eth_hdr->h_proto == htons(ETH_P_HSR))
total_length = sizeof(struct hsrv1_ethhdr_sp);
else
total_length = sizeof(struct hsrv0_ethhdr_sp);
if (!pskb_may_pull(skb, total_length + sizeof(struct hsr_sup_payload)))
return false;
skb_pull(skb, total_length);
payload = (struct hsr_sup_payload *)skb->data;
skb_push(skb, total_length);
/* For RedBox (HSR-SAN) check if we have received the supervision
* frame with MAC addresses from own ProxyNodeTable.
*/
return hsr_is_node_in_db(&hsr->proxy_node_db,
payload->macaddress_A);
}
static struct sk_buff *create_stripped_skb_hsr(struct sk_buff *skb_in,
struct hsr_frame_info *frame)
{
@ -499,7 +528,8 @@ static void hsr_forward_do(struct hsr_frame_info *frame)
frame->sequence_nr))
continue;
if (frame->is_supervision && port->type == HSR_PT_MASTER) {
if (frame->is_supervision && port->type == HSR_PT_MASTER &&
!frame->is_proxy_supervision) {
hsr_handle_sup_frame(frame);
continue;
}
@ -637,6 +667,9 @@ static int fill_frame_info(struct hsr_frame_info *frame,
memset(frame, 0, sizeof(*frame));
frame->is_supervision = is_supervision_frame(port->hsr, skb);
if (frame->is_supervision && hsr->redbox)
frame->is_proxy_supervision =
is_proxy_supervision_frame(port->hsr, skb);
n_db = &hsr->node_db;
if (port->type == HSR_PT_INTERLINK)
@ -688,7 +721,7 @@ void hsr_forward_skb(struct sk_buff *skb, struct hsr_port *port)
/* Gets called for ingress frames as well as egress from master port.
* So check and increment stats for master port only here.
*/
if (port->type == HSR_PT_MASTER) {
if (port->type == HSR_PT_MASTER || port->type == HSR_PT_INTERLINK) {
port->dev->stats.tx_packets++;
port->dev->stats.tx_bytes += skb->len;
}

12
net/hsr/hsr_framereg.c
View File

@ -36,6 +36,14 @@ static bool seq_nr_after(u16 a, u16 b)
#define seq_nr_before(a, b) seq_nr_after((b), (a))
#define seq_nr_before_or_eq(a, b) (!seq_nr_after((a), (b)))
bool hsr_addr_is_redbox(struct hsr_priv *hsr, unsigned char *addr)
{
if (!hsr->redbox || !is_valid_ether_addr(hsr->macaddress_redbox))
return false;
return ether_addr_equal(addr, hsr->macaddress_redbox);
}
bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr)
{
struct hsr_self_node *sn;
@ -591,6 +599,10 @@ void hsr_prune_proxy_nodes(struct timer_list *t)
spin_lock_bh(&hsr->list_lock);
list_for_each_entry_safe(node, tmp, &hsr->proxy_node_db, mac_list) {
/* Don't prune RedBox node. */
if (hsr_addr_is_redbox(hsr, node->macaddress_A))
continue;
timestamp = node->time_in[HSR_PT_INTERLINK];
/* Prune old entries */

2
net/hsr/hsr_framereg.h
View File

@ -22,6 +22,7 @@ struct hsr_frame_info {
struct hsr_node *node_src;
u16 sequence_nr;
bool is_supervision;
bool is_proxy_supervision;
bool is_vlan;
bool is_local_dest;
bool is_local_exclusive;
@ -35,6 +36,7 @@ struct hsr_node *hsr_get_node(struct hsr_port *port, struct list_head *node_db,
enum hsr_port_type rx_port);
void hsr_handle_sup_frame(struct hsr_frame_info *frame);
bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr);
bool hsr_addr_is_redbox(struct hsr_priv *hsr, unsigned char *addr);
void hsr_addr_subst_source(struct hsr_node *node, struct sk_buff *skb);
void hsr_addr_subst_dest(struct hsr_node *node_src, struct sk_buff *skb,

4
net/hsr/hsr_main.h
View File

@ -170,7 +170,8 @@ struct hsr_node;
struct hsr_proto_ops {
/* format and send supervision frame */
void (*send_sv_frame)(struct hsr_port *port, unsigned long *interval);
void (*send_sv_frame)(struct hsr_port *port, unsigned long *interval,
const unsigned char addr[ETH_ALEN]);
void (*handle_san_frame)(bool san, enum hsr_port_type port,
struct hsr_node *node);
bool (*drop_frame)(struct hsr_frame_info *frame, struct hsr_port *port);
@ -197,6 +198,7 @@ struct hsr_priv {
struct list_head proxy_node_db; /* RedBox HSR proxy nodes */
struct hsr_self_node __rcu *self_node; /* MACs of slaves */
struct timer_list announce_timer; /* Supervision frame dispatch */
struct timer_list announce_proxy_timer;
struct timer_list prune_timer;
struct timer_list prune_proxy_timer;
int announce_count;

1
net/hsr/hsr_netlink.c
View File

@ -131,6 +131,7 @@ static void hsr_dellink(struct net_device *dev, struct list_head *head)
del_timer_sync(&hsr->prune_timer);
del_timer_sync(&hsr->prune_proxy_timer);
del_timer_sync(&hsr->announce_timer);
timer_delete_sync(&hsr->announce_proxy_timer);
hsr_debugfs_term(hsr);
hsr_del_ports(hsr);