tipc: make link implementation independent from struct tipc_bearer
In reality, the link implementation is already independent from
struct tipc_bearer, in that it doesn't store any reference to it.
However, we still pass on a pointer to a bearer instance in the
function tipc_link_create(), just to have it extract some
initialization information from it.
I later commits, we need to create instances of tipc_link without
having any associated struct tipc_bearer. To facilitate this, we
want to extract the initialization data already in the creator
function in node.c, before calling tipc_link_create(), and pass
this info on as individual parameters in the call.
This commit introduces this change.
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/tipc/link.c b/net/tipc/link.c
index ff9b0b9..0d8fdc8 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -165,9 +165,16 @@
/**
* tipc_link_create - create a new link
* @n: pointer to associated node
- * @b: pointer to associated bearer
+ * @if_name: associated interface name
+ * @bearer_id: id (index) of associated bearer
+ * @tolerance: link tolerance to be used by link
+ * @net_plane: network plane (A,B,c..) this link belongs to
+ * @mtu: mtu to be advertised by link
+ * @priority: priority to be used by link
+ * @window: send window to be used by link
+ * @session: session to be used by link
* @ownnode: identity of own node
- * @peer: identity of peer node
+ * @peer: node id of peer node
* @maddr: media address to be used
* @inputq: queue to put messages ready for delivery
* @namedq: queue to put binding table update messages ready for delivery
@@ -175,47 +182,47 @@
*
* Returns true if link was created, otherwise false
*/
-bool tipc_link_create(struct tipc_node *n, struct tipc_bearer *b, u32 session,
- u32 ownnode, u32 peer, struct tipc_media_addr *maddr,
+bool tipc_link_create(struct tipc_node *n, char *if_name, int bearer_id,
+ int tolerance, char net_plane, u32 mtu, int priority,
+ int window, u32 session, u32 ownnode, u32 peer,
+ struct tipc_media_addr *maddr,
struct sk_buff_head *inputq, struct sk_buff_head *namedq,
struct tipc_link **link)
{
struct tipc_link *l;
struct tipc_msg *hdr;
- char *if_name;
l = kzalloc(sizeof(*l), GFP_ATOMIC);
if (!l)
return false;
*link = l;
-
- /* Note: peer i/f name is completed by reset/activate message */
- if_name = strchr(b->name, ':') + 1;
- sprintf(l->name, "%u.%u.%u:%s-%u.%u.%u:unknown",
- tipc_zone(ownnode), tipc_cluster(ownnode), tipc_node(ownnode),
- if_name, tipc_zone(peer), tipc_cluster(peer), tipc_node(peer));
-
- l->addr = peer;
- l->media_addr = maddr;
- l->owner = n;
- l->peer_session = WILDCARD_SESSION;
- l->bearer_id = b->identity;
- l->tolerance = b->tolerance;
- l->net_plane = b->net_plane;
- l->advertised_mtu = b->mtu;
- l->mtu = b->mtu;
- l->priority = b->priority;
- tipc_link_set_queue_limits(l, b->window);
- l->inputq = inputq;
- l->namedq = namedq;
- l->state = LINK_RESETTING;
l->pmsg = (struct tipc_msg *)&l->proto_msg;
hdr = l->pmsg;
tipc_msg_init(ownnode, hdr, LINK_PROTOCOL, RESET_MSG, INT_H_SIZE, peer);
msg_set_size(hdr, sizeof(l->proto_msg));
msg_set_session(hdr, session);
msg_set_bearer_id(hdr, l->bearer_id);
+
+ /* Note: peer i/f name is completed by reset/activate message */
+ sprintf(l->name, "%u.%u.%u:%s-%u.%u.%u:unknown",
+ tipc_zone(ownnode), tipc_cluster(ownnode), tipc_node(ownnode),
+ if_name, tipc_zone(peer), tipc_cluster(peer), tipc_node(peer));
strcpy((char *)msg_data(hdr), if_name);
+
+ l->addr = peer;
+ l->media_addr = maddr;
+ l->owner = n;
+ l->peer_session = WILDCARD_SESSION;
+ l->bearer_id = bearer_id;
+ l->tolerance = tolerance;
+ l->net_plane = net_plane;
+ l->advertised_mtu = mtu;
+ l->mtu = mtu;
+ l->priority = priority;
+ tipc_link_set_queue_limits(l, window);
+ l->inputq = inputq;
+ l->namedq = namedq;
+ l->state = LINK_RESETTING;
__skb_queue_head_init(&l->transmq);
__skb_queue_head_init(&l->backlogq);
__skb_queue_head_init(&l->deferdq);
diff --git a/net/tipc/link.h b/net/tipc/link.h
index 0201212..06bf66d 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -205,8 +205,10 @@
struct tipc_stats stats;
};
-bool tipc_link_create(struct tipc_node *n, struct tipc_bearer *b, u32 session,
- u32 ownnode, u32 peer, struct tipc_media_addr *maddr,
+bool tipc_link_create(struct tipc_node *n, char *if_name, int bearer_id,
+ int tolerance, char net_plane, u32 mtu, int priority,
+ int window, u32 session, u32 ownnode, u32 peer,
+ struct tipc_media_addr *maddr,
struct sk_buff_head *inputq, struct sk_buff_head *namedq,
struct tipc_link **link);
void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl,
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 2670751..d3f7ca2 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -493,6 +493,7 @@
bool link_up = false;
bool accept_addr = false;
bool reset = true;
+ char *if_name;
*dupl_addr = false;
*respond = false;
@@ -579,7 +580,10 @@
pr_warn("Cannot establish 3rd link to %x\n", n->addr);
goto exit;
}
- if (!tipc_link_create(n, b, mod(tipc_net(net)->random),
+ if_name = strchr(b->name, ':') + 1;
+ if (!tipc_link_create(n, if_name, b->identity, b->tolerance,
+ b->net_plane, b->mtu, b->priority,
+ b->window, mod(tipc_net(net)->random),
tipc_own_addr(net), onode, &le->maddr,
&le->inputq, &n->bclink.namedq, &l)) {
*respond = false;