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net: hsr: add support for EntryForgetTime

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commit f176411401127a07a9360dec14eca448eb2e9d45 upstream.

In IEC 62439-3 EntryForgetTime is defined with a value of 400 ms. When a
node does not send any frame within this time, the sequence number check
for can be ignored. This solves communication issues with Cisco IE 2000
in Redbox mode.

Fixes: f421436a59 ("net/hsr: Add support for the High-availability Seamless Redundancy protocol (HSRv0)")
Signed-off-by: Marco Wenzel <marco.wenzel@a-eberle.de>
Reviewed-by: George McCollister <george.mccollister@gmail.com>
Tested-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210224094653.1440-1-marco.wenzel@a-eberle.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Marco Wenzel 2021-02-24 10:46:49 +01:00 committed by Greg Kroah-Hartman
parent a31cb3072d
commit daea772346
3 changed files with 9 additions and 2 deletions
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9
net/hsr/hsr_framereg.c
View File

@ -164,8 +164,10 @@ static struct hsr_node *hsr_add_node(struct hsr_priv *hsr,
* as initialization. (0 could trigger an spurious ring error warning).
*/
now = jiffies;
for (i = 0; i < HSR_PT_PORTS; i++)
for (i = 0; i < HSR_PT_PORTS; i++) {
new_node->time_in[i] = now;
new_node->time_out[i] = now;
}
for (i = 0; i < HSR_PT_PORTS; i++)
new_node->seq_out[i] = seq_out;
@ -411,9 +413,12 @@ void hsr_register_frame_in(struct hsr_node *node, struct hsr_port *port,
int hsr_register_frame_out(struct hsr_port *port, struct hsr_node *node,
u16 sequence_nr)
{
if (seq_nr_before_or_eq(sequence_nr, node->seq_out[port->type]))
if (seq_nr_before_or_eq(sequence_nr, node->seq_out[port->type]) &&
time_is_after_jiffies(node->time_out[port->type] +
msecs_to_jiffies(HSR_ENTRY_FORGET_TIME)))
return 1;
node->time_out[port->type] = jiffies;
node->seq_out[port->type] = sequence_nr;
return 0;
}

1
net/hsr/hsr_framereg.h
View File

@ -75,6 +75,7 @@ struct hsr_node {
enum hsr_port_type addr_B_port;
unsigned long time_in[HSR_PT_PORTS];
bool time_in_stale[HSR_PT_PORTS];
unsigned long time_out[HSR_PT_PORTS];
/* if the node is a SAN */
bool san_a;
bool san_b;

1
net/hsr/hsr_main.h
View File

@ -21,6 +21,7 @@
#define HSR_LIFE_CHECK_INTERVAL 2000 /* ms */
#define HSR_NODE_FORGET_TIME 60000 /* ms */
#define HSR_ANNOUNCE_INTERVAL 100 /* ms */
#define HSR_ENTRY_FORGET_TIME 400 /* ms */
/* By how much may slave1 and slave2 timestamps of latest received frame from
* each node differ before we notify of communication problem?