From 4caba0afd9f43ace17cb573891840b3091ed00f2 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Mon, 3 Jul 2006 10:02:51 +0200
Subject: [PATCH] --- yaml --- r: 31966 b: refs/heads/master c:
 7c2660b00fae0575dd4ce5c7b6bf30762b632045 h: refs/heads/master v: v3

---
 [refs]                            |  2 +-
 trunk/net/bluetooth/rfcomm/core.c | 18 +++++++++++++-----
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/[refs] b/[refs]
index 89f9942c0153..75302cf4c01e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0139418c943c3389cf75afc4f4d2b2fa52bbf7c9
+refs/heads/master: 7c2660b00fae0575dd4ce5c7b6bf30762b632045
diff --git a/trunk/net/bluetooth/rfcomm/core.c b/trunk/net/bluetooth/rfcomm/core.c
index 6de33fe7bf5b..fe18dc2dd3c1 100644
--- a/trunk/net/bluetooth/rfcomm/core.c
+++ b/trunk/net/bluetooth/rfcomm/core.c
@@ -52,8 +52,9 @@
 #define BT_DBG(D...)
 #endif
 
-#define VERSION "1.7"
+#define VERSION "1.8"
 
+static int disable_cfc = 0;
 static unsigned int l2cap_mtu = RFCOMM_MAX_L2CAP_MTU;
 
 static struct task_struct *rfcomm_thread;
@@ -533,7 +534,7 @@ static struct rfcomm_session *rfcomm_session_add(struct socket *sock, int state)
 	s->sock  = sock;
 
 	s->mtu = RFCOMM_DEFAULT_MTU;
-	s->cfc = RFCOMM_CFC_UNKNOWN;
+	s->cfc = disable_cfc ? RFCOMM_CFC_DISABLED : RFCOMM_CFC_UNKNOWN;
 
 	/* Do not increment module usage count for listening sessions.
 	 * Otherwise we won't be able to unload the module. */
@@ -1222,14 +1223,18 @@ static int rfcomm_apply_pn(struct rfcomm_dlc *d, int cr, struct rfcomm_pn *pn)
 	BT_DBG("dlc %p state %ld dlci %d mtu %d fc 0x%x credits %d", 
 			d, d->state, d->dlci, pn->mtu, pn->flow_ctrl, pn->credits);
 
-	if (pn->flow_ctrl == 0xf0 || pn->flow_ctrl == 0xe0) {
-		d->cfc = s->cfc = RFCOMM_CFC_ENABLED;
+	if ((pn->flow_ctrl == 0xf0 && s->cfc != RFCOMM_CFC_DISABLED) ||
+						pn->flow_ctrl == 0xe0) {
+		d->cfc = RFCOMM_CFC_ENABLED;
 		d->tx_credits = pn->credits;
 	} else {
-		d->cfc = s->cfc = RFCOMM_CFC_DISABLED;
+		d->cfc = RFCOMM_CFC_DISABLED;
 		set_bit(RFCOMM_TX_THROTTLED, &d->flags);
 	}
 
+	if (s->cfc == RFCOMM_CFC_UNKNOWN)
+		s->cfc = d->cfc;
+
 	d->priority = pn->priority;
 
 	d->mtu = s->mtu = btohs(pn->mtu);
@@ -2073,6 +2078,9 @@ static void __exit rfcomm_exit(void)
 module_init(rfcomm_init);
 module_exit(rfcomm_exit);
 
+module_param(disable_cfc, bool, 0644);
+MODULE_PARM_DESC(disable_cfc, "Disable credit based flow control");
+
 module_param(l2cap_mtu, uint, 0644);
 MODULE_PARM_DESC(l2cap_mtu, "Default MTU for the L2CAP connection");