From 93dc338dfd719f02290639394ad7bd1800b971e4 Mon Sep 17 00:00:00 2001
From: Frederic Robra
Date: Tue, 3 Sep 2019 11:25:19 +0200
Subject: added support to requeue busy requests

---
 src/kernel/net-txrx.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/kernel/net-txrx.c')

diff --git a/src/kernel/net-txrx.c b/src/kernel/net-txrx.c
index d905ce9..7226a3e 100644
--- a/src/kernel/net-txrx.c
+++ b/src/kernel/net-txrx.c
@@ -183,6 +183,8 @@ error:
  * dnbd3_send_request_cmd - send a dndb3 cmd
  * @sock: the socket where the request is send
  * @dnbd3_cmd: the dnbd3 cmd to send
+ *
+ * the tx_lock of the socket must be held
  */
 int dnbd3_send_request_cmd(struct dnbd3_sock *sock, uint16_t dnbd3_cmd)
 {
@@ -211,10 +213,12 @@ int dnbd3_send_request_cmd(struct dnbd3_sock *sock, uint16_t dnbd3_cmd)
 		goto error;
 	}
 
-	mutex_lock(&sock->tx_lock);
+	if (unlikely(!sock->sock)) {
+		result = -EIO;
+		goto error;
+	}
 	sock->pending = req;
 	result = dnbd3_send_request(sock, req, NULL);
-	mutex_unlock(&sock->tx_lock);
 
 error:
 	if (req) {
-- 
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