netdev - [PATCH net-next 19/21] tipc: Enhance sending of discovery object link request messages

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 10 May 2011 16:44:35 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, Allan.Stephens@...driver.com,
	Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [PATCH net-next 19/21] tipc: Enhance sending of discovery object link request messages

From: Allan Stephens <Allan.Stephens@...driver.com>

Augments TIPC's discovery object to send its initial neighbor discovery
request message as soon as the associated bearer is created, rather than
waiting for its first periodic timeout to occur, thereby speeding up the
discovery process. Also adds a check to suppress the initial request or
subsequent requests if the bearer is blocked at the time the request is
scheduled for transmission.

Signed-off-by: Allan Stephens <Allan.Stephens@...driver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 net/tipc/discover.c |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index 6acf32a..dba4767 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -241,6 +241,17 @@ void tipc_disc_update_link_req(struct link_req *req)
 }
 
 /**
+ * disc_send_msg - send link setup request message
+ * @req: ptr to link request structure
+ */
+
+static void disc_send_msg(struct link_req *req)
+{
+	if (!req->bearer->blocked)
+		tipc_bearer_send(req->bearer, req->buf, &req->dest);
+}
+
+/**
  * disc_timeout - send a periodic link setup request
  * @req: ptr to link request structure
  *
@@ -251,7 +262,7 @@ static void disc_timeout(struct link_req *req)
 {
 	spin_lock_bh(&req->bearer->lock);
 
-	req->bearer->media->send_msg(req->buf, req->bearer, &req->dest);
+	disc_send_msg(req);
 
 	if ((req->timer_intv == TIPC_LINK_REQ_SLOW) ||
 	    (req->timer_intv == TIPC_LINK_REQ_FAST)) {
@@ -300,6 +311,7 @@ int tipc_disc_create(struct tipc_bearer *b_ptr,
 	k_init_timer(&req->timer, (Handler)disc_timeout, (unsigned long)req);
 	k_start_timer(&req->timer, req->timer_intv);
 	b_ptr->link_req = req;
+	disc_send_msg(req);
 	return 0;
 }
 
-- 
1.7.4.4

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html