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