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/* Utility routines
*
* Copyright (C) 2015 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#include <linux/ip.h>
#include <linux/udp.h>
#include "ar-internal.h"
/*
* Set up an RxRPC address from a socket buffer.
*/
void rxrpc_get_addr_from_skb(struct rxrpc_local *local,
const struct sk_buff *skb,
struct sockaddr_rxrpc *srx)
{
memset(srx, 0, sizeof(*srx));
srx->transport_type = local->srx.transport_type;
srx->transport.family = local->srx.transport.family;
/* Can we see an ipv4 UDP packet on an ipv6 UDP socket? and vice
* versa?
*/
switch (srx->transport.family) {
case AF_INET:
srx->transport.sin.sin_port = udp_hdr(skb)->source;
srx->transport_len = sizeof(struct sockaddr_in);
memcpy(&srx->transport.sin.sin_addr, &ip_hdr(skb)->saddr,
sizeof(struct in_addr));
break;
default:
BUG();
}
}
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