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Commit 6364e6ee authored by Stephen Röttger's avatar Stephen Röttger Committed by David S. Miller
Browse files

ieee802154/dgram: Pass source address in dgram_recvmsg 



This patch lets dgram_recvmsg fill in the sockaddr struct in
msg->msg_name with the source address of the packet.
This is used by the userland functions recvmsg and recvfrom to get the
senders address.

[Stefan: Changed from old zigbee legacy tree to mainline]

Signed-off-by: default avatarStephen Röttger <stephen.roettger@zero-entropy.de>
Signed-off-by: default avatarStefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5abb0029

net/ieee802154/dgram.c

+10 −0
Original line number Diff line number Diff line
@@ -291,6 +291,9 @@ static int dgram_recvmsg(struct kiocb *iocb, struct sock *sk, 
	size_t copied = 0;

	int err = -EOPNOTSUPP;

	struct sk_buff *skb;

	struct sockaddr_ieee802154 *saddr;



	saddr = (struct sockaddr_ieee802154 *)msg->msg_name;



	skb = skb_recv_datagram(sk, flags, noblock, &err);

	if (!skb)
@@ -309,6 +312,13 @@ static int dgram_recvmsg(struct kiocb *iocb, struct sock *sk, 


	sock_recv_ts_and_drops(msg, sk, skb);



	if (saddr) {

		saddr->family = AF_IEEE802154;

		saddr->addr = mac_cb(skb)->sa;

	}

	if (addr_len)

		*addr_len = sizeof(*saddr);



	if (flags & MSG_TRUNC)

		copied = skb->len;

done: