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tipc: rename fields in struct tipc_link 

We rename some fields in struct tipc_link, in order to give them more
descriptive names:

next_in_no -> rcv_nxt
next_out_no-> snd_nxt
fsm_msg_cnt-> silent_intv_cnt
cont_intv  -> keepalive_intv
last_retransmitted -> last_retransm

There are no functional changes in this commit.

Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Paul Maloy 2015-05-14 10:46:15 -04:00 committed by David S. Miller
parent e4bf4f7696
commit a97b9d3fa9
3 changed files with 97 additions and 96 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
net/tipc/bcast.c
View File

@ -118,16 +118,16 @@ static void bclink_set_last_sent(struct net *net)
struct sk_buff *skb = skb_peek(&bcl->backlogq);
if (skb)
bcl->fsm_msg_cnt = mod(buf_seqno(skb) - 1);
bcl->silent_intv_cnt = mod(buf_seqno(skb) - 1);
else
bcl->fsm_msg_cnt = mod(bcl->next_out_no - 1);
bcl->silent_intv_cnt = mod(bcl->snd_nxt - 1);
}
u32 tipc_bclink_get_last_sent(struct net *net)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
return tn->bcl->fsm_msg_cnt;
return tn->bcl->silent_intv_cnt;
}
static void bclink_update_last_sent(struct tipc_node *node, u32 seqno)
@ -212,16 +212,16 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
* or both sent and unsent messages (otherwise)
*/
if (tn->bclink->bcast_nodes.count)
acked = tn->bcl->fsm_msg_cnt;
acked = tn->bcl->silent_intv_cnt;
else
acked = tn->bcl->next_out_no;
acked = tn->bcl->snd_nxt;
} else {
/*
* Bail out if specified sequence number does not correspond
* to a message that has been sent and not yet acknowledged
*/
if (less(acked, buf_seqno(skb)) ||
less(tn->bcl->fsm_msg_cnt, acked) ||
less(tn->bcl->silent_intv_cnt, acked) ||
less_eq(acked, n_ptr->bclink.acked))
goto exit;
}
@ -803,9 +803,9 @@ int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg)
goto attr_msg_full;
if (nla_put_string(msg->skb, TIPC_NLA_LINK_NAME, bcl->name))
goto attr_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_LINK_RX, bcl->next_in_no))
if (nla_put_u32(msg->skb, TIPC_NLA_LINK_RX, bcl->rcv_nxt))
goto attr_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_LINK_TX, bcl->next_out_no))
if (nla_put_u32(msg->skb, TIPC_NLA_LINK_TX, bcl->snd_nxt))
goto attr_msg_full;
prop = nla_nest_start(msg->skb, TIPC_NLA_LINK_PROP);
@ -914,7 +914,7 @@ int tipc_bclink_init(struct net *net)
__skb_queue_head_init(&bcl->backlogq);
__skb_queue_head_init(&bcl->deferdq);
skb_queue_head_init(&bcl->wakeupq);
bcl->next_out_no = 1;
bcl->snd_nxt = 1;
spin_lock_init(&bclink->node.lock);
__skb_queue_head_init(&bclink->arrvq);
skb_queue_head_init(&bclink->inputq);

153
net/tipc/link.c
View File

@ -233,7 +233,7 @@ struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
if (n_ptr->link_cnt >= MAX_BEARERS) {
tipc_addr_string_fill(addr_string, n_ptr->addr);
pr_err("Attempt to establish %uth link to %s. Max %u allowed.\n",
pr_err("Cannot establish %uth link to %s. Max %u allowed.\n",
n_ptr->link_cnt, addr_string, MAX_BEARERS);
return NULL;
}
@ -280,7 +280,7 @@ struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
l_ptr->mtu = l_ptr->advertised_mtu;
l_ptr->priority = b_ptr->priority;
tipc_link_set_queue_limits(l_ptr, b_ptr->window);
l_ptr->next_out_no = 1;
l_ptr->snd_nxt = 1;
__skb_queue_head_init(&l_ptr->transmq);
__skb_queue_head_init(&l_ptr->backlogq);
__skb_queue_head_init(&l_ptr->deferdq);
@ -450,9 +450,9 @@ void tipc_link_reset(struct tipc_link *l_ptr)
if (was_active_link && tipc_node_is_up(l_ptr->owner) && (pl != l_ptr)) {
l_ptr->flags |= LINK_FAILINGOVER;
l_ptr->failover_checkpt = l_ptr->next_in_no;
l_ptr->failover_checkpt = l_ptr->rcv_nxt;
pl->failover_pkts = FIRST_FAILOVER;
pl->failover_checkpt = l_ptr->next_in_no;
pl->failover_checkpt = l_ptr->rcv_nxt;
pl->failover_skb = l_ptr->reasm_buf;
} else {
kfree_skb(l_ptr->reasm_buf);
@ -469,8 +469,8 @@ void tipc_link_reset(struct tipc_link *l_ptr)
l_ptr->reasm_buf = NULL;
l_ptr->rcv_unacked = 0;
l_ptr->checkpoint = 1;
l_ptr->next_out_no = 1;
l_ptr->fsm_msg_cnt = 0;
l_ptr->snd_nxt = 1;
l_ptr->silent_intv_cnt = 0;
l_ptr->stale_count = 0;
link_reset_statistics(l_ptr);
}
@ -479,7 +479,7 @@ static void link_activate(struct tipc_link *link)
{
struct tipc_node *node = link->owner;
link->next_in_no = 1;
link->rcv_nxt = 1;
link->stats.recv_info = 1;
tipc_node_link_up(node, link);
tipc_bearer_add_dest(node->net, link->bearer_id, link->addr);
@ -493,7 +493,7 @@ static void link_activate(struct tipc_link *link)
static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
{
struct tipc_link *other;
unsigned long cont_intv = l_ptr->cont_intv;
unsigned long timer_intv = l_ptr->keepalive_intv;
if (l_ptr->flags & LINK_STOPPED)
return;
@ -503,7 +503,7 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
if (l_ptr->flags & LINK_FAILINGOVER) {
if (event == TIMEOUT_EVT)
link_set_timer(l_ptr, cont_intv);
link_set_timer(l_ptr, timer_intv);
return;
}
@ -514,32 +514,32 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
case ACTIVATE_MSG:
break;
case TIMEOUT_EVT:
if (l_ptr->next_in_no != l_ptr->checkpoint) {
l_ptr->checkpoint = l_ptr->next_in_no;
if (l_ptr->rcv_nxt != l_ptr->checkpoint) {
l_ptr->checkpoint = l_ptr->rcv_nxt;
if (tipc_bclink_acks_missing(l_ptr->owner)) {
tipc_link_proto_xmit(l_ptr, STATE_MSG,
0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
l_ptr->silent_intv_cnt++;
}
link_set_timer(l_ptr, cont_intv);
link_set_timer(l_ptr, timer_intv);
break;
}
l_ptr->state = WORKING_UNKNOWN;
l_ptr->fsm_msg_cnt = 0;
l_ptr->silent_intv_cnt = 0;
tipc_link_proto_xmit(l_ptr, STATE_MSG, 1, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
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->fsm_msg_cnt = 0;
l_ptr->silent_intv_cnt = 0;
tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
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);
@ -550,46 +550,47 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
case TRAFFIC_MSG_EVT:
case ACTIVATE_MSG:
l_ptr->state = WORKING_WORKING;
l_ptr->fsm_msg_cnt = 0;
link_set_timer(l_ptr, cont_intv);
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->fsm_msg_cnt = 0;
l_ptr->silent_intv_cnt = 0;
tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
l_ptr->silent_intv_cnt++;
link_set_timer(l_ptr, timer_intv);
break;
case TIMEOUT_EVT:
if (l_ptr->next_in_no != l_ptr->checkpoint) {
if (l_ptr->rcv_nxt != l_ptr->checkpoint) {
l_ptr->state = WORKING_WORKING;
l_ptr->fsm_msg_cnt = 0;
l_ptr->checkpoint = l_ptr->next_in_no;
l_ptr->silent_intv_cnt = 0;
l_ptr->checkpoint = l_ptr->rcv_nxt;
if (tipc_bclink_acks_missing(l_ptr->owner)) {
tipc_link_proto_xmit(l_ptr, STATE_MSG,
0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
l_ptr->silent_intv_cnt++;
}
link_set_timer(l_ptr, cont_intv);
} else if (l_ptr->fsm_msg_cnt < l_ptr->abort_limit) {
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->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
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->fsm_msg_cnt = 0;
l_ptr->silent_intv_cnt = 0;
tipc_link_proto_xmit(l_ptr, RESET_MSG,
0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
l_ptr->silent_intv_cnt++;
link_set_timer(l_ptr, timer_intv);
}
break;
default:
@ -605,31 +606,31 @@ 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->fsm_msg_cnt = 0;
l_ptr->silent_intv_cnt = 0;
link_activate(l_ptr);
tipc_link_proto_xmit(l_ptr, STATE_MSG, 1, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
l_ptr->silent_intv_cnt++;
if (l_ptr->owner->working_links == 1)
tipc_link_sync_xmit(l_ptr);
link_set_timer(l_ptr, cont_intv);
link_set_timer(l_ptr, timer_intv);
break;
case RESET_MSG:
l_ptr->state = RESET_RESET;
l_ptr->fsm_msg_cnt = 0;
l_ptr->silent_intv_cnt = 0;
tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
1, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
l_ptr->silent_intv_cnt++;
link_set_timer(l_ptr, timer_intv);
break;
case STARTING_EVT:
l_ptr->flags |= LINK_STARTED;
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
l_ptr->silent_intv_cnt++;
link_set_timer(l_ptr, timer_intv);
break;
case TIMEOUT_EVT:
tipc_link_proto_xmit(l_ptr, RESET_MSG, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
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);
@ -643,21 +644,21 @@ 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->fsm_msg_cnt = 0;
l_ptr->silent_intv_cnt = 0;
link_activate(l_ptr);
tipc_link_proto_xmit(l_ptr, STATE_MSG, 1, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
l_ptr->silent_intv_cnt++;
if (l_ptr->owner->working_links == 1)
tipc_link_sync_xmit(l_ptr);
link_set_timer(l_ptr, cont_intv);
link_set_timer(l_ptr, timer_intv);
break;
case RESET_MSG:
break;
case TIMEOUT_EVT:
tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
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);
@ -685,8 +686,8 @@ int __tipc_link_xmit(struct net *net, struct tipc_link *link,
unsigned int maxwin = link->window;
unsigned int imp = msg_importance(msg);
uint mtu = link->mtu;
u16 ack = mod(link->next_in_no - 1);
u16 seqno = link->next_out_no;
u16 ack = mod(link->rcv_nxt - 1);
u16 seqno = link->snd_nxt;
u16 bc_last_in = link->owner->bclink.last_in;
struct tipc_media_addr *addr = &link->media_addr;
struct sk_buff_head *transmq = &link->transmq;
@ -729,7 +730,7 @@ int __tipc_link_xmit(struct net *net, struct tipc_link *link,
link->backlog[imp].len++;
seqno++;
}
link->next_out_no = seqno;
link->snd_nxt = seqno;
return 0;
}
@ -859,7 +860,7 @@ void tipc_link_push_packets(struct tipc_link *link)
{
struct sk_buff *skb;
struct tipc_msg *msg;
u16 ack = mod(link->next_in_no - 1);
u16 ack = mod(link->rcv_nxt - 1);
while (skb_queue_len(&link->transmq) < link->window) {
skb = __skb_dequeue(&link->backlogq);
@ -946,13 +947,13 @@ void tipc_link_retransmit(struct tipc_link *l_ptr, struct sk_buff *skb,
msg = buf_msg(skb);
/* Detect repeated retransmit failures */
if (l_ptr->last_retransmitted == msg_seqno(msg)) {
if (l_ptr->last_retransm == msg_seqno(msg)) {
if (++l_ptr->stale_count > 100) {
link_retransmit_failure(l_ptr, skb);
return;
}
} else {
l_ptr->last_retransmitted = msg_seqno(msg);
l_ptr->last_retransm = msg_seqno(msg);
l_ptr->stale_count = 1;
}
@ -960,7 +961,7 @@ void tipc_link_retransmit(struct tipc_link *l_ptr, struct sk_buff *skb,
if (!retransmits)
break;
msg = buf_msg(skb);
msg_set_ack(msg, mod(l_ptr->next_in_no - 1));
msg_set_ack(msg, mod(l_ptr->rcv_nxt - 1));
msg_set_bcast_ack(msg, l_ptr->owner->bclink.last_in);
tipc_bearer_send(l_ptr->owner->net, l_ptr->bearer_id, skb,
&l_ptr->media_addr);
@ -983,11 +984,11 @@ static bool link_synch(struct tipc_link *l)
goto synched;
/* Was last pre-synch packet added to input queue ? */
if (less_eq(pl->next_in_no, l->synch_point))
if (less_eq(pl->rcv_nxt, l->synch_point))
return false;
/* Is it still in the input queue ? */
post_synch = mod(pl->next_in_no - l->synch_point) - 1;
post_synch = mod(pl->rcv_nxt - l->synch_point) - 1;
if (skb_queue_len(&pl->inputq) > post_synch)
return false;
synched:
@ -1004,7 +1005,7 @@ static void link_retrieve_defq(struct tipc_link *link,
return;
seq_no = buf_seqno(skb_peek(&link->deferdq));
if (seq_no == link->next_in_no)
if (seq_no == link->rcv_nxt)
skb_queue_splice_tail_init(&link->deferdq, list);
}
@ -1119,7 +1120,7 @@ void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b_ptr)
}
/* Link is now in state WORKING_WORKING */
if (unlikely(seq_no != l_ptr->next_in_no)) {
if (unlikely(seq_no != l_ptr->rcv_nxt)) {
link_handle_out_of_seq_msg(l_ptr, skb);
link_retrieve_defq(l_ptr, &head);
skb = NULL;
@ -1130,7 +1131,7 @@ void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b_ptr)
if (!link_synch(l_ptr))
goto unlock;
}
l_ptr->next_in_no++;
l_ptr->rcv_nxt++;
if (unlikely(!skb_queue_empty(&l_ptr->deferdq)))
link_retrieve_defq(l_ptr, &head);
if (unlikely(++l_ptr->rcv_unacked >= TIPC_MIN_LINK_WIN)) {
@ -1301,7 +1302,7 @@ static void link_handle_out_of_seq_msg(struct tipc_link *l_ptr,
* Discard packet if a duplicate; otherwise add it to deferred queue
* and notify peer of gap as per protocol specification
*/
if (less(seq_no, l_ptr->next_in_no)) {
if (less(seq_no, l_ptr->rcv_nxt)) {
l_ptr->stats.duplicates++;
kfree_skb(buf);
return;
@ -1343,7 +1344,7 @@ void tipc_link_proto_xmit(struct tipc_link *l_ptr, u32 msg_typ, int probe_msg,
msg_set_last_bcast(msg, tipc_bclink_get_last_sent(l_ptr->owner->net));
if (msg_typ == STATE_MSG) {
u16 next_sent = l_ptr->next_out_no;
u16 next_sent = l_ptr->snd_nxt;
if (!tipc_link_is_up(l_ptr))
return;
@ -1352,7 +1353,7 @@ void tipc_link_proto_xmit(struct tipc_link *l_ptr, u32 msg_typ, int probe_msg,
msg_set_next_sent(msg, next_sent);
if (!skb_queue_empty(&l_ptr->deferdq)) {
last_rcv = buf_seqno(skb_peek(&l_ptr->deferdq));
gap = mod(last_rcv - l_ptr->next_in_no);
gap = mod(last_rcv - l_ptr->rcv_nxt);
}
msg_set_seq_gap(msg, gap);
if (gap)
@ -1360,7 +1361,7 @@ void tipc_link_proto_xmit(struct tipc_link *l_ptr, u32 msg_typ, int probe_msg,
msg_set_link_tolerance(msg, tolerance);
msg_set_linkprio(msg, priority);
msg_set_max_pkt(msg, l_ptr->mtu);
msg_set_ack(msg, mod(l_ptr->next_in_no - 1));
msg_set_ack(msg, mod(l_ptr->rcv_nxt - 1));
msg_set_probe(msg, probe_msg != 0);
if (probe_msg)
l_ptr->stats.sent_probes++;
@ -1380,7 +1381,7 @@ void tipc_link_proto_xmit(struct tipc_link *l_ptr, u32 msg_typ, int probe_msg,
msg_set_linkprio(msg, l_ptr->priority);
msg_set_size(msg, msg_size);
msg_set_seqno(msg, mod(l_ptr->next_out_no + (0xffff/2)));
msg_set_seqno(msg, mod(l_ptr->snd_nxt + (0xffff / 2)));
buf = tipc_buf_acquire(msg_size);
if (!buf)
@ -1486,8 +1487,8 @@ static void tipc_link_proto_rcv(struct tipc_link *l_ptr,
if (link_reset_unknown(l_ptr))
break;
if (less_eq(l_ptr->next_in_no, msg_next_sent(msg)))
rec_gap = mod(msg_next_sent(msg) - l_ptr->next_in_no);
if (less_eq(l_ptr->rcv_nxt, msg_next_sent(msg)))
rec_gap = mod(msg_next_sent(msg) - l_ptr->rcv_nxt);
if (msg_probe(msg))
l_ptr->stats.recv_probes++;
@ -1634,7 +1635,7 @@ tunnel_queue:
struct tipc_msg *msg = buf_msg(skb);
u32 len = msg_size(msg);
msg_set_ack(msg, mod(link->next_in_no - 1));
msg_set_ack(msg, mod(link->rcv_nxt - 1));
msg_set_bcast_ack(msg, link->owner->bclink.last_in);
msg_set_size(&tnl_hdr, len + INT_H_SIZE);
outskb = tipc_buf_acquire(len + INT_H_SIZE);
@ -1723,8 +1724,8 @@ static void link_set_supervision_props(struct tipc_link *l_ptr, u32 tol)
return;
l_ptr->tolerance = tol;
l_ptr->cont_intv = msecs_to_jiffies(intv);
l_ptr->abort_limit = tol / (jiffies_to_msecs(l_ptr->cont_intv));
l_ptr->keepalive_intv = msecs_to_jiffies(intv);
l_ptr->abort_limit = tol / (jiffies_to_msecs(l_ptr->keepalive_intv));
}
void tipc_link_set_queue_limits(struct tipc_link *l, u32 win)
@ -1784,8 +1785,8 @@ static struct tipc_node *tipc_link_find_owner(struct net *net,
static void link_reset_statistics(struct tipc_link *l_ptr)
{
memset(&l_ptr->stats, 0, sizeof(l_ptr->stats));
l_ptr->stats.sent_info = l_ptr->next_out_no;
l_ptr->stats.recv_info = l_ptr->next_in_no;
l_ptr->stats.sent_info = l_ptr->snd_nxt;
l_ptr->stats.recv_info = l_ptr->rcv_nxt;
}
static void link_print(struct tipc_link *l_ptr, const char *str)
@ -2018,9 +2019,9 @@ static int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg,
goto attr_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_LINK_MTU, link->mtu))
goto attr_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_LINK_RX, link->next_in_no))
if (nla_put_u32(msg->skb, TIPC_NLA_LINK_RX, link->rcv_nxt))
goto attr_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_LINK_TX, link->next_out_no))
if (nla_put_u32(msg->skb, TIPC_NLA_LINK_TX, link->snd_nxt))
goto attr_msg_full;
if (tipc_link_is_up(link))

20
net/tipc/link.h
View File

@ -112,25 +112,25 @@ struct tipc_stats {
* @peer_bearer_id: bearer id used by link's peer endpoint
* @bearer_id: local bearer id used by link
* @tolerance: minimum link continuity loss needed to reset link [in ms]
* @cont_intv: link continuity testing interval
* @keepalive_intv: link keepalive timer interval
* @abort_limit: # of unacknowledged continuity probes needed to reset link
* @state: current state of link FSM
* @fsm_msg_cnt: # of protocol messages link FSM has sent in current state
* @silent_intv_cnt: # of timer intervals without any reception from peer
* @proto_msg: template for control messages generated by link
* @pmsg: convenience pointer to "proto_msg" field
* @priority: current link priority
* @net_plane: current link network plane ('A' through 'H')
* @backlog_limit: backlog queue congestion thresholds (indexed by importance)
* @exp_msg_count: # of tunnelled messages expected during link changeover
* @reset_checkpoint: seq # of last acknowledged message at time of link reset
* @reset_rcv_checkpt: seq # of last acknowledged message at time of link reset
* @mtu: current maximum packet size for this link
* @advertised_mtu: advertised own mtu when link is being established
* @transmitq: queue for sent, non-acked messages
* @backlogq: queue for messages waiting to be sent
* @next_out_no: next sequence number to use for outbound messages
* @snt_nxt: next sequence number to use for outbound messages
* @last_retransmitted: sequence number of most recently retransmitted message
* @stale_count: # of identical retransmit requests made by peer
* @next_in_no: next sequence number to expect for inbound messages
* @rcv_nxt: next sequence number to expect for inbound messages
* @deferred_queue: deferred queue saved OOS b'cast message received from node
* @unacked_window: # of inbound messages rx'd without ack'ing back to peer
* @inputq: buffer queue for messages to be delivered upwards
@ -156,10 +156,10 @@ struct tipc_link {
u32 peer_bearer_id;
u32 bearer_id;
u32 tolerance;
unsigned long cont_intv;
unsigned long keepalive_intv;
u32 abort_limit;
int state;
u32 fsm_msg_cnt;
u32 silent_intv_cnt;
struct {
unchar hdr[INT_H_SIZE];
unchar body[TIPC_MAX_IF_NAME];
@ -185,13 +185,13 @@ struct tipc_link {
u16 len;
u16 limit;
} backlog[5];
u16 next_out_no;
u16 last_retransmitted;
u16 snd_nxt;
u16 last_retransm;
u32 window;
u32 stale_count;
/* Reception */
u16 next_in_no;
u16 rcv_nxt;
u32 rcv_unacked;
struct sk_buff_head deferdq;
struct sk_buff_head inputq;