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tipc: simplify signature of tipc_nametbl_lookup_group() 

We reduce the signature of tipc_nametbl_lookup_group() by using a
struct tipc_uaddr pointer. This entails a couple of minor changes in the
functions tipc_send_group_mcast/anycast/unicast/bcast() in socket.c

Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Maloy 2021-03-16 22:06:18 -04:00 committed by David S. Miller
parent 833f867089
commit 006ed14ef8
3 changed files with 27 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
net/tipc/name_table.c
View File

@ -621,31 +621,31 @@ bool tipc_nametbl_lookup_anycast(struct net *net,
* destination socket/node pairs matching the given address.
* The requester may or may not want to exclude himself from the list.
*/
bool tipc_nametbl_lookup_group(struct net *net, u32 type, u32 instance,
u32 scope, struct list_head *dsts,
int *dstcnt, u32 exclude,
bool mcast)
bool tipc_nametbl_lookup_group(struct net *net, struct tipc_uaddr *ua,
struct list_head *dsts, int *dstcnt,
u32 exclude, bool mcast)
{
u32 self = tipc_own_addr(net);
u32 inst = ua->sa.instance;
struct service_range *sr;
struct tipc_service *sc;
struct publication *p;
*dstcnt = 0;
rcu_read_lock();
sc = tipc_service_find(net, type);
sc = tipc_service_find(net, ua->sa.type);
if (unlikely(!sc))
goto exit;
spin_lock_bh(&sc->lock);
/* Todo: a full search i.e. service_range_foreach_match() instead? */
sr = service_range_match_first(sc->ranges.rb_node, instance, instance);
sr = service_range_match_first(sc->ranges.rb_node, inst, inst);
if (!sr)
goto no_match;
list_for_each_entry(p, &sr->all_publ, all_publ) {
if (p->scope != scope)
if (p->scope != ua->scope)
continue;
if (p->sk.ref == exclude && p->sk.node == self)
continue;

7
net/tipc/name_table.h
View File

@ -116,10 +116,9 @@ void tipc_nametbl_lookup_mcast_sockets(struct net *net, struct tipc_uaddr *ua,
bool exact, struct list_head *dports);
void tipc_nametbl_lookup_mcast_nodes(struct net *net, struct tipc_uaddr *ua,
struct tipc_nlist *nodes);
bool tipc_nametbl_lookup_group(struct net *net, u32 type, u32 instance,
u32 domain, struct list_head *dsts,
int *dstcnt, u32 exclude,
bool all);
bool tipc_nametbl_lookup_group(struct net *net, struct tipc_uaddr *ua,
struct list_head *dsts, int *dstcnt,
u32 exclude, bool mcast);
void tipc_nametbl_build_group(struct net *net, struct tipc_group *grp,
u32 type, u32 domain);
struct publication *tipc_nametbl_publish(struct net *net, struct tipc_uaddr *ua,

42
net/tipc/socket.c
View File

@ -958,7 +958,7 @@ static int tipc_send_group_unicast(struct socket *sock, struct msghdr *m,
int dlen, long timeout)
{
struct sock *sk = sock->sk;
DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
struct tipc_uaddr *ua = (struct tipc_uaddr *)m->msg_name;
int blks = tsk_blocks(GROUP_H_SIZE + dlen);
struct tipc_sock *tsk = tipc_sk(sk);
struct net *net = sock_net(sk);
@ -966,8 +966,8 @@ static int tipc_send_group_unicast(struct socket *sock, struct msghdr *m,
u32 node, port;
int rc;
node = dest->addr.id.node;
port = dest->addr.id.ref;
node = ua->sk.node;
port = ua->sk.ref;
if (!port && !node)
return -EHOSTUNREACH;
@ -1001,7 +1001,7 @@ static int tipc_send_group_unicast(struct socket *sock, struct msghdr *m,
static int tipc_send_group_anycast(struct socket *sock, struct msghdr *m,
int dlen, long timeout)
{
DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
struct tipc_uaddr *ua = (struct tipc_uaddr *)m->msg_name;
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
struct list_head *cong_links = &tsk->cong_links;
@ -1012,16 +1012,13 @@ static int tipc_send_group_anycast(struct socket *sock, struct msghdr *m,
struct net *net = sock_net(sk);
u32 node, port, exclude;
struct list_head dsts;
u32 type, inst, scope;
int lookups = 0;
int dstcnt, rc;
bool cong;
INIT_LIST_HEAD(&dsts);
type = msg_nametype(hdr);
inst = dest->addr.name.name.instance;
scope = msg_lookup_scope(hdr);
ua->sa.type = msg_nametype(hdr);
ua->scope = msg_lookup_scope(hdr);
while (++lookups < 4) {
exclude = tipc_group_exclude(tsk->group);
@ -1030,9 +1027,8 @@ static int tipc_send_group_anycast(struct socket *sock, struct msghdr *m,
/* Look for a non-congested destination member, if any */
while (1) {
if (!tipc_nametbl_lookup_group(net, type, inst, scope,
&dsts, &dstcnt, exclude,
false))
if (!tipc_nametbl_lookup_group(net, ua, &dsts, &dstcnt,
exclude, false))
return -EHOSTUNREACH;
tipc_dest_pop(&dsts, &node, &port);
cong = tipc_group_cong(tsk->group, node, port, blks,
@ -1087,7 +1083,7 @@ static int tipc_send_group_anycast(struct socket *sock, struct msghdr *m,
static int tipc_send_group_bcast(struct socket *sock, struct msghdr *m,
int dlen, long timeout)
{
DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
struct tipc_uaddr *ua = (struct tipc_uaddr *)m->msg_name;
struct sock *sk = sock->sk;
struct net *net = sock_net(sk);
struct tipc_sock *tsk = tipc_sk(sk);
@ -1112,9 +1108,9 @@ static int tipc_send_group_bcast(struct socket *sock, struct msghdr *m,
return -EHOSTUNREACH;
/* Complete message header */
if (dest) {
if (ua) {
msg_set_type(hdr, TIPC_GRP_MCAST_MSG);
msg_set_nameinst(hdr, dest->addr.name.name.instance);
msg_set_nameinst(hdr, ua->sa.instance);
} else {
msg_set_type(hdr, TIPC_GRP_BCAST_MSG);
msg_set_nameinst(hdr, 0);
@ -1161,29 +1157,25 @@ static int tipc_send_group_bcast(struct socket *sock, struct msghdr *m,
static int tipc_send_group_mcast(struct socket *sock, struct msghdr *m,
int dlen, long timeout)
{
struct tipc_uaddr *ua = (struct tipc_uaddr *)m->msg_name;
struct sock *sk = sock->sk;
DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_group *grp = tsk->group;
struct tipc_msg *hdr = &tsk->phdr;
struct net *net = sock_net(sk);
u32 type, inst, scope, exclude;
struct list_head dsts;
u32 dstcnt;
u32 dstcnt, exclude;
INIT_LIST_HEAD(&dsts);
type = msg_nametype(hdr);
inst = dest->addr.name.name.instance;
scope = msg_lookup_scope(hdr);
ua->sa.type = msg_nametype(hdr);
ua->scope = msg_lookup_scope(hdr);
exclude = tipc_group_exclude(grp);
if (!tipc_nametbl_lookup_group(net, type, inst, scope, &dsts,
&dstcnt, exclude, true))
if (!tipc_nametbl_lookup_group(net, ua, &dsts, &dstcnt, exclude, true))
return -EHOSTUNREACH;
if (dstcnt == 1) {
tipc_dest_pop(&dsts, &dest->addr.id.node, &dest->addr.id.ref);
tipc_dest_pop(&dsts, &ua->sk.node, &ua->sk.ref);
return tipc_send_group_unicast(sock, m, dlen, timeout);
}