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Diffstat (limited to 'net')
-rw-r--r--net/tipc/link.c81
-rw-r--r--net/tipc/link.h2
2 files changed, 22 insertions, 61 deletions
diff --git a/net/tipc/link.c b/net/tipc/link.c
index c39543e..a5ea19e 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -86,7 +86,7 @@ static const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = {
*/
#define STARTING_EVT 856384768 /* link processing trigger */
#define TRAFFIC_MSG_EVT 560815u /* rx'd ??? */
-#define TIMEOUT_EVT 560817u /* link timer expired */
+#define SILENCE_EVT 560817u /* timer dicovered silence from peer */
/*
* State value stored in 'failover_pkts'
@@ -106,6 +106,7 @@ static void tipc_link_sync_rcv(struct tipc_node *n, struct sk_buff *buf);
static void tipc_link_input(struct tipc_link *l, struct sk_buff *skb);
static bool tipc_data_input(struct tipc_link *l, struct sk_buff *skb);
static bool tipc_link_failover_rcv(struct tipc_link *l, struct sk_buff **skb);
+static void link_set_timer(struct tipc_link *link, unsigned long time);
/*
* Simple link routines
*/
@@ -197,11 +198,12 @@ static void link_timeout(unsigned long data)
}
/* do all other link processing performed on a periodic basis */
- link_state_event(l_ptr, TIMEOUT_EVT);
-
+ if (l_ptr->silent_intv_cnt || tipc_bclink_acks_missing(l_ptr->owner))
+ link_state_event(l_ptr, SILENCE_EVT);
+ l_ptr->silent_intv_cnt++;
if (skb_queue_len(&l_ptr->backlogq))
tipc_link_push_packets(l_ptr);
-
+ link_set_timer(l_ptr, l_ptr->keepalive_intv);
tipc_node_unlock(l_ptr->owner);
tipc_link_put(l_ptr);
}
@@ -261,7 +263,6 @@ struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
/* note: peer i/f name is updated by reset/activate message */
memcpy(&l_ptr->media_addr, media_addr, sizeof(*media_addr));
l_ptr->owner = n_ptr;
- l_ptr->checkpoint = 1;
l_ptr->peer_session = INVALID_SESSION;
l_ptr->bearer_id = b_ptr->identity;
link_set_supervision_props(l_ptr, b_ptr->tolerance);
@@ -468,7 +469,6 @@ void tipc_link_reset(struct tipc_link *l_ptr)
tipc_link_purge_backlog(l_ptr);
l_ptr->reasm_buf = NULL;
l_ptr->rcv_unacked = 0;
- l_ptr->checkpoint = 1;
l_ptr->snd_nxt = 1;
l_ptr->silent_intv_cnt = 0;
l_ptr->stale_count = 0;
@@ -481,6 +481,7 @@ static void link_activate(struct tipc_link *link)
link->rcv_nxt = 1;
link->stats.recv_info = 1;
+ link->silent_intv_cnt = 0;
tipc_node_link_up(node, link);
tipc_bearer_add_dest(node->net, link->bearer_id, link->addr);
}
@@ -501,45 +502,33 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
if (!(l_ptr->flags & LINK_STARTED) && (event != STARTING_EVT))
return; /* Not yet. */
- if (l_ptr->flags & LINK_FAILINGOVER) {
- if (event == TIMEOUT_EVT)
- link_set_timer(l_ptr, timer_intv);
+ if (l_ptr->flags & LINK_FAILINGOVER)
return;
- }
switch (l_ptr->state) {
case WORKING_WORKING:
switch (event) {
case TRAFFIC_MSG_EVT:
case ACTIVATE_MSG:
+ l_ptr->silent_intv_cnt = 0;
break;
- case TIMEOUT_EVT:
- if (l_ptr->rcv_nxt != l_ptr->checkpoint) {
- l_ptr->checkpoint = l_ptr->rcv_nxt;
- if (tipc_bclink_acks_missing(l_ptr->owner)) {
+ case SILENCE_EVT:
+ if (!l_ptr->silent_intv_cnt) {
+ if (tipc_bclink_acks_missing(l_ptr->owner))
tipc_link_proto_xmit(l_ptr, STATE_MSG,
0, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
- }
- link_set_timer(l_ptr, timer_intv);
break;
}
l_ptr->state = WORKING_UNKNOWN;
- l_ptr->silent_intv_cnt = 0;
tipc_link_proto_xmit(l_ptr, STATE_MSG, 1, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
- link_set_timer(l_ptr, timer_intv);
break;
case RESET_MSG:
pr_debug("%s<%s>, requested by peer\n",
link_rst_msg, l_ptr->name);
tipc_link_reset(l_ptr);
l_ptr->state = RESET_RESET;
- l_ptr->silent_intv_cnt = 0;
tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
0, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
- link_set_timer(l_ptr, timer_intv);
break;
default:
pr_debug("%s%u in WW state\n", link_unk_evt, event);
@@ -551,46 +540,32 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
case ACTIVATE_MSG:
l_ptr->state = WORKING_WORKING;
l_ptr->silent_intv_cnt = 0;
- link_set_timer(l_ptr, timer_intv);
break;
case RESET_MSG:
pr_debug("%s<%s>, requested by peer while probing\n",
link_rst_msg, l_ptr->name);
tipc_link_reset(l_ptr);
l_ptr->state = RESET_RESET;
- l_ptr->silent_intv_cnt = 0;
tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
0, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
- link_set_timer(l_ptr, timer_intv);
break;
- case TIMEOUT_EVT:
- if (l_ptr->rcv_nxt != l_ptr->checkpoint) {
+ case SILENCE_EVT:
+ if (!l_ptr->silent_intv_cnt) {
l_ptr->state = WORKING_WORKING;
- l_ptr->silent_intv_cnt = 0;
- l_ptr->checkpoint = l_ptr->rcv_nxt;
- if (tipc_bclink_acks_missing(l_ptr->owner)) {
+ if (tipc_bclink_acks_missing(l_ptr->owner))
tipc_link_proto_xmit(l_ptr, STATE_MSG,
0, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
- }
- link_set_timer(l_ptr, timer_intv);
} else if (l_ptr->silent_intv_cnt <
l_ptr->abort_limit) {
tipc_link_proto_xmit(l_ptr, STATE_MSG,
1, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
- link_set_timer(l_ptr, timer_intv);
} else { /* Link has failed */
pr_debug("%s<%s>, peer not responding\n",
link_rst_msg, l_ptr->name);
tipc_link_reset(l_ptr);
l_ptr->state = RESET_UNKNOWN;
- l_ptr->silent_intv_cnt = 0;
tipc_link_proto_xmit(l_ptr, RESET_MSG,
0, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
- link_set_timer(l_ptr, timer_intv);
}
break;
default:
@@ -606,31 +581,22 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
if (other && link_working_unknown(other))
break;
l_ptr->state = WORKING_WORKING;
- l_ptr->silent_intv_cnt = 0;
link_activate(l_ptr);
tipc_link_proto_xmit(l_ptr, STATE_MSG, 1, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
if (l_ptr->owner->working_links == 1)
tipc_link_sync_xmit(l_ptr);
- link_set_timer(l_ptr, timer_intv);
break;
case RESET_MSG:
l_ptr->state = RESET_RESET;
- l_ptr->silent_intv_cnt = 0;
tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
1, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
- link_set_timer(l_ptr, timer_intv);
break;
case STARTING_EVT:
l_ptr->flags |= LINK_STARTED;
- l_ptr->silent_intv_cnt++;
link_set_timer(l_ptr, timer_intv);
break;
- case TIMEOUT_EVT:
+ case SILENCE_EVT:
tipc_link_proto_xmit(l_ptr, RESET_MSG, 0, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
- link_set_timer(l_ptr, timer_intv);
break;
default:
pr_err("%s%u in RU state\n", link_unk_evt, event);
@@ -644,21 +610,16 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
if (other && link_working_unknown(other))
break;
l_ptr->state = WORKING_WORKING;
- l_ptr->silent_intv_cnt = 0;
link_activate(l_ptr);
tipc_link_proto_xmit(l_ptr, STATE_MSG, 1, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
if (l_ptr->owner->working_links == 1)
tipc_link_sync_xmit(l_ptr);
- link_set_timer(l_ptr, timer_intv);
break;
case RESET_MSG:
break;
- case TIMEOUT_EVT:
+ case SILENCE_EVT:
tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
0, 0, 0, 0);
- l_ptr->silent_intv_cnt++;
- link_set_timer(l_ptr, timer_intv);
break;
default:
pr_err("%s%u in RR state\n", link_unk_evt, event);
@@ -1126,6 +1087,8 @@ void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b_ptr)
skb = NULL;
goto unlock;
}
+ l_ptr->silent_intv_cnt = 0;
+
/* Synchronize with parallel link if applicable */
if (unlikely((l_ptr->flags & LINK_SYNCHING) && !msg_dup(msg))) {
if (!link_synch(l_ptr))
@@ -1295,8 +1258,8 @@ static void link_handle_out_of_seq_msg(struct tipc_link *l_ptr,
return;
}
- /* Record OOS packet arrival (force mismatch on next timeout) */
- l_ptr->checkpoint--;
+ /* Record OOS packet arrival */
+ l_ptr->silent_intv_cnt = 0;
/*
* Discard packet if a duplicate; otherwise add it to deferred queue
@@ -1480,7 +1443,7 @@ static void tipc_link_proto_rcv(struct tipc_link *l_ptr,
}
/* Record reception; force mismatch at next timeout: */
- l_ptr->checkpoint--;
+ l_ptr->silent_intv_cnt = 0;
link_state_event(l_ptr, TRAFFIC_MSG_EVT);
l_ptr->stats.recv_states++;
diff --git a/net/tipc/link.h b/net/tipc/link.h
index 74d2d12..0c02c97 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -107,7 +107,6 @@ struct tipc_stats {
* @owner: pointer to peer node
* @refcnt: reference counter for permanent references (owner node & timer)
* @flags: execution state flags for link endpoint instance
- * @checkpoint: reference point for triggering link continuity checking
* @peer_session: link session # being used by peer end of link
* @peer_bearer_id: bearer id used by link's peer endpoint
* @bearer_id: local bearer id used by link
@@ -151,7 +150,6 @@ struct tipc_link {
/* Management and link supervision data */
unsigned int flags;
- u16 checkpoint;
u32 peer_session;
u32 peer_bearer_id;
u32 bearer_id;
generated by cgit v0.10.2 at 2024-07-24 09:21:28 (GMT)