1 files changed, 19 insertions, 17 deletions

diff --git a/drivers/net/wwan/t7xx/t7xx_port_wwan.c b/drivers/net/wwan/t7xx/t7xx_port_wwan.c
index 24bd21942403..17389c8f6600 100644
--- a/drivers/net/wwan/t7xx/t7xx_port_wwan.c
+++ b/drivers/net/wwan/t7xx/t7xx_port_wwan.c
@@ -54,13 +54,13 @@ static void t7xx_port_ctrl_stop(struct wwan_port *port)
 static int t7xx_port_ctrl_tx(struct wwan_port *port, struct sk_buff *skb)
 {
 	struct t7xx_port *port_private = wwan_port_get_drvdata(port);
-	size_t len, offset, chunk_len = 0, txq_mtu = CLDMA_MTU;
 	const struct t7xx_port_conf *port_conf;
+	struct sk_buff *cur = skb, *cloned;
 	struct t7xx_fsm_ctl *ctl;
 	enum md_state md_state;
+	int cnt = 0, ret;
 
-	len = skb->len;
-	if (!len || !port_private->chan_enable)
+	if (!port_private->chan_enable)
 		return -EINVAL;
 
 	port_conf = port_private->port_conf;
@@ -72,23 +72,21 @@ static int t7xx_port_ctrl_tx(struct wwan_port *port, struct sk_buff *skb)
 		return -ENODEV;
 	}
 
-	for (offset = 0; offset < len; offset += chunk_len) {
-		struct sk_buff *skb_ccci;
-		int ret;
-
-		chunk_len = min(len - offset, txq_mtu - sizeof(struct ccci_header));
-		skb_ccci = t7xx_port_alloc_skb(chunk_len);
-		if (!skb_ccci)
-			return -ENOMEM;
-
-		skb_put_data(skb_ccci, skb->data + offset, chunk_len);
-		ret = t7xx_port_send_skb(port_private, skb_ccci, 0, 0);
+	while (cur) {
+		cloned = skb_clone(cur, GFP_KERNEL);
+		cloned->len = skb_headlen(cur);
+		ret = t7xx_port_send_skb(port_private, cloned, 0, 0);
 		if (ret) {
-			dev_kfree_skb_any(skb_ccci);
+			dev_kfree_skb(cloned);
 			dev_err(port_private->dev, "Write error on %s port, %d\n",
 				port_conf->name, ret);
-			return ret;
+			return cnt ? cnt + ret : ret;
 		}
+		cnt += cur->len;
+		if (cur == skb)
+			cur = skb_shinfo(skb)->frag_list;
+		else
+			cur = cur->next;
 	}
 
 	dev_kfree_skb(skb);
@@ -154,13 +152,17 @@ static int t7xx_port_wwan_disable_chl(struct t7xx_port *port)
 static void t7xx_port_wwan_md_state_notify(struct t7xx_port *port, unsigned int state)
 {
 	const struct t7xx_port_conf *port_conf = port->port_conf;
+	unsigned int header_len = sizeof(struct ccci_header);
+	struct wwan_port_caps caps;
 
 	if (state != MD_STATE_READY)
 		return;
 
 	if (!port->wwan.wwan_port) {
+		caps.frag_len = CLDMA_MTU - header_len;
+		caps.headroom_len = header_len;
 		port->wwan.wwan_port = wwan_create_port(port->dev, port_conf->port_type,
-							&wwan_ops, port);
+							&wwan_ops, &caps, port);
 		if (IS_ERR(port->wwan.wwan_port))
 			dev_err(port->dev, "Unable to create WWWAN port %s", port_conf->name);
 	}