From: Lennert Buytenhek <buytenh@wantstofly.org>
Date: Mon, 25 May 2015 12:38:24 +0000 (+0300)
Subject: ieee802154 socket: Return EMSGSIZE from raw_sendmsg() if packet too big.
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c032705ebfed32a6dcda72d83c54f060d4bf1e6e;p=linux-beck.git

ieee802154 socket: Return EMSGSIZE from raw_sendmsg() if packet too big.

The proper return code for trying to send a packet that exceeds the
outgoing interface's MTU is EMSGSIZE, not EINVAL, so patch ieee802154's
raw_sendmsg() to do the right thing.  (Its dgram_sendmsg() was already
returning EMSGSIZE for this case.)

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
---

diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index e5cc2537c2a3..d9fc5ccb1d0d 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -284,7 +284,7 @@ static int raw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 
 	if (size > mtu) {
 		pr_debug("size = %Zu, mtu = %u\n", size, mtu);
-		err = -EINVAL;
+		err = -EMSGSIZE;
 		goto out_dev;
 	}