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Message-Id: <20210317020623.1258298-15-jmaloy@redhat.com>
Date: Tue, 16 Mar 2021 22:06:21 -0400
From: jmaloy@...hat.com
To: netdev@...r.kernel.org, davem@...emloft.net
Cc: tipc-discussion@...ts.sourceforge.net,
tung.q.nguyen@...tech.com.au, hoang.h.le@...tech.com.au,
tuong.t.lien@...tech.com.au, jmaloy@...hat.com, maloy@...jonn.com,
xinl@...hat.com, ying.xue@...driver.com,
parthasarathy.bhuvaragan@...il.com
Subject: [net-next 14/16] tipc: simplify api between binding table and topology server
From: Jon Maloy <jmaloy@...hat.com>
The function tipc_report_overlap() is called from the binding table
with numerous parameters taken from an instance of struct publication.
A closer look reveals that it always is safe to send along a pointer
to the instance itself, and hence reduce the call signature. We do
that in this commit.
Signed-off-by: Jon Maloy <jmaloy@...hat.com>
Acked-by: Ying Xue <ying.xue@...driver.com>
Acked-by: Hoang Le <hoang.h.le@...tech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@...tech.com.au>
Acked-by: Xin Long <lucien.xin@...il.com>
---
net/tipc/name_table.c | 21 ++++++---------
net/tipc/subscr.c | 59 +++++++++++++++++++++++--------------------
net/tipc/subscr.h | 11 +++-----
3 files changed, 43 insertions(+), 48 deletions(-)
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 73d9f49662e4..f648feae446f 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -358,9 +358,7 @@ static bool tipc_service_insert_publ(struct net *net,
/* Any subscriptions waiting for notification? */
list_for_each_entry_safe(sub, tmp, &sc->subscriptions, service_list) {
- tipc_sub_report_overlap(sub, p->sr.lower, p->sr.upper,
- TIPC_PUBLISHED, p->sk.ref, p->sk.node,
- p->scope, first);
+ tipc_sub_report_overlap(sub, p, TIPC_PUBLISHED, first);
}
res = true;
exit:
@@ -453,9 +451,7 @@ static void tipc_service_subscribe(struct tipc_service *service,
/* Sort the publications before reporting */
list_sort(NULL, &publ_list, tipc_publ_sort);
list_for_each_entry_safe(p, tmp, &publ_list, list) {
- tipc_sub_report_overlap(sub, p->sr.lower, p->sr.upper,
- TIPC_PUBLISHED, p->sk.ref, p->sk.node,
- p->scope, true);
+ tipc_sub_report_overlap(sub, p, TIPC_PUBLISHED, true);
list_del_init(&p->list);
}
}
@@ -511,8 +507,6 @@ struct publication *tipc_nametbl_remove_publ(struct net *net,
struct publication *p = NULL;
struct service_range *sr;
struct tipc_service *sc;
- u32 upper = ua->sr.upper;
- u32 lower = ua->sr.lower;
bool last;
sc = tipc_service_find(net, ua);
@@ -530,8 +524,7 @@ struct publication *tipc_nametbl_remove_publ(struct net *net,
/* Notify any waiting subscriptions */
last = list_empty(&sr->all_publ);
list_for_each_entry_safe(sub, tmp, &sc->subscriptions, service_list) {
- tipc_sub_report_overlap(sub, lower, upper, TIPC_WITHDRAWN,
- sk->ref, sk->node, ua->scope, last);
+ tipc_sub_report_overlap(sub, p, TIPC_WITHDRAWN, last);
}
/* Remove service range item if this was its last publication */
@@ -540,7 +533,7 @@ struct publication *tipc_nametbl_remove_publ(struct net *net,
kfree(sr);
}
- /* Delete service item if this no more publications and subscriptions */
+ /* Delete service item if no more publications and subscriptions */
if (RB_EMPTY_ROOT(&sc->ranges) && list_empty(&sc->subscriptions)) {
hlist_del_init_rcu(&sc->service_list);
kfree_rcu(sc, rcu);
@@ -839,7 +832,8 @@ bool tipc_nametbl_subscribe(struct tipc_subscription *sub)
struct tipc_uaddr ua;
bool res = true;
- tipc_uaddr(&ua, TIPC_SERVICE_RANGE, TIPC_NODE_SCOPE, type, 0, 0);
+ tipc_uaddr(&ua, TIPC_SERVICE_RANGE, TIPC_NODE_SCOPE, type,
+ tipc_sub_read(s, seq.lower), tipc_sub_read(s, seq.upper));
spin_lock_bh(&tn->nametbl_lock);
sc = tipc_service_find(sub->net, &ua);
if (!sc)
@@ -870,7 +864,8 @@ void tipc_nametbl_unsubscribe(struct tipc_subscription *sub)
struct tipc_service *sc;
struct tipc_uaddr ua;
- tipc_uaddr(&ua, TIPC_SERVICE_RANGE, TIPC_NODE_SCOPE, type, 0, 0);
+ tipc_uaddr(&ua, TIPC_SERVICE_RANGE, TIPC_NODE_SCOPE, type,
+ tipc_sub_read(s, seq.lower), tipc_sub_read(s, seq.upper));
spin_lock_bh(&tn->nametbl_lock);
sc = tipc_service_find(sub->net, &ua);
if (!sc)
diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c
index f6ad0005218c..5f8dc0e7488f 100644
--- a/net/tipc/subscr.c
+++ b/net/tipc/subscr.c
@@ -3,7 +3,7 @@
*
* Copyright (c) 2000-2017, Ericsson AB
* Copyright (c) 2005-2007, 2010-2013, Wind River Systems
- * Copyright (c) 2020, Red Hat Inc
+ * Copyright (c) 2020-2021, Red Hat Inc
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -40,18 +40,26 @@
#include "subscr.h"
static void tipc_sub_send_event(struct tipc_subscription *sub,
- u32 found_lower, u32 found_upper,
- u32 event, u32 port, u32 node)
+ struct publication *p,
+ u32 event)
{
+ struct tipc_subscr *s = &sub->evt.s;
struct tipc_event *evt = &sub->evt;
if (sub->inactive)
return;
tipc_evt_write(evt, event, event);
- tipc_evt_write(evt, found_lower, found_lower);
- tipc_evt_write(evt, found_upper, found_upper);
- tipc_evt_write(evt, port.ref, port);
- tipc_evt_write(evt, port.node, node);
+ if (p) {
+ tipc_evt_write(evt, found_lower, p->sr.lower);
+ tipc_evt_write(evt, found_upper, p->sr.upper);
+ tipc_evt_write(evt, port.ref, p->sk.ref);
+ tipc_evt_write(evt, port.node, p->sk.node);
+ } else {
+ tipc_evt_write(evt, found_lower, s->seq.lower);
+ tipc_evt_write(evt, found_upper, s->seq.upper);
+ tipc_evt_write(evt, port.ref, 0);
+ tipc_evt_write(evt, port.node, 0);
+ }
tipc_topsrv_queue_evt(sub->net, sub->conid, event, evt);
}
@@ -61,24 +69,23 @@ static void tipc_sub_send_event(struct tipc_subscription *sub,
* @found_lower: lower value to test
* @found_upper: upper value to test
*
- * Return: 1 if there is overlap, otherwise 0.
+ * Returns true if there is overlap, otherwise false.
*/
-int tipc_sub_check_overlap(struct tipc_service_range *seq, u32 found_lower,
- u32 found_upper)
+bool tipc_sub_check_overlap(struct tipc_service_range *sr,
+ u32 found_lower, u32 found_upper)
{
- if (found_lower < seq->lower)
- found_lower = seq->lower;
- if (found_upper > seq->upper)
- found_upper = seq->upper;
+ if (found_lower < sr->lower)
+ found_lower = sr->lower;
+ if (found_upper > sr->upper)
+ found_upper = sr->upper;
if (found_lower > found_upper)
- return 0;
- return 1;
+ return false;
+ return true;
}
void tipc_sub_report_overlap(struct tipc_subscription *sub,
- u32 found_lower, u32 found_upper,
- u32 event, u32 port, u32 node,
- u32 scope, int must)
+ struct publication *p,
+ u32 event, bool must)
{
struct tipc_subscr *s = &sub->evt.s;
u32 filter = tipc_sub_read(s, filter);
@@ -88,29 +95,25 @@ void tipc_sub_report_overlap(struct tipc_subscription *sub,
seq.lower = tipc_sub_read(s, seq.lower);
seq.upper = tipc_sub_read(s, seq.upper);
- if (!tipc_sub_check_overlap(&seq, found_lower, found_upper))
+ if (!tipc_sub_check_overlap(&seq, p->sr.lower, p->sr.upper))
return;
-
if (!must && !(filter & TIPC_SUB_PORTS))
return;
- if (filter & TIPC_SUB_CLUSTER_SCOPE && scope == TIPC_NODE_SCOPE)
+ if (filter & TIPC_SUB_CLUSTER_SCOPE && p->scope == TIPC_NODE_SCOPE)
return;
- if (filter & TIPC_SUB_NODE_SCOPE && scope != TIPC_NODE_SCOPE)
+ if (filter & TIPC_SUB_NODE_SCOPE && p->scope != TIPC_NODE_SCOPE)
return;
spin_lock(&sub->lock);
- tipc_sub_send_event(sub, found_lower, found_upper,
- event, port, node);
+ tipc_sub_send_event(sub, p, event);
spin_unlock(&sub->lock);
}
static void tipc_sub_timeout(struct timer_list *t)
{
struct tipc_subscription *sub = from_timer(sub, t, timer);
- struct tipc_subscr *s = &sub->evt.s;
spin_lock(&sub->lock);
- tipc_sub_send_event(sub, s->seq.lower, s->seq.upper,
- TIPC_SUBSCR_TIMEOUT, 0, 0);
+ tipc_sub_send_event(sub, NULL, TIPC_SUBSCR_TIMEOUT);
sub->inactive = true;
spin_unlock(&sub->lock);
}
diff --git a/net/tipc/subscr.h b/net/tipc/subscr.h
index 3ded27391d54..56769ce46e4d 100644
--- a/net/tipc/subscr.h
+++ b/net/tipc/subscr.h
@@ -3,7 +3,7 @@
*
* Copyright (c) 2003-2017, Ericsson AB
* Copyright (c) 2005-2007, 2012-2013, Wind River Systems
- * Copyright (c) 2020, Red Hat Inc
+ * Copyright (c) 2020-2021, Red Hat Inc
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -43,6 +43,7 @@
#define TIPC_MAX_SUBSCR 65535
#define TIPC_MAX_PUBL 65535
+struct publication;
struct tipc_subscription;
struct tipc_conn;
@@ -74,13 +75,9 @@ struct tipc_subscription *tipc_sub_subscribe(struct net *net,
struct tipc_subscr *s,
int conid);
void tipc_sub_unsubscribe(struct tipc_subscription *sub);
-
-int tipc_sub_check_overlap(struct tipc_service_range *seq,
- u32 found_lower, u32 found_upper);
void tipc_sub_report_overlap(struct tipc_subscription *sub,
- u32 found_lower, u32 found_upper,
- u32 event, u32 port, u32 node,
- u32 scope, int must);
+ struct publication *p,
+ u32 event, bool must);
int __net_init tipc_topsrv_init_net(struct net *net);
void __net_exit tipc_topsrv_exit_net(struct net *net);
--
2.29.2
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