projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| be6e6707 DH |
1 | /* Utility routines |
| 2 | * | |
| 3 | * Copyright (C) 2015 Red Hat, Inc. All Rights Reserved. | |
| 4 | * Written by David Howells (dhowells@redhat.com) | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public Licence | |
| 8 | * as published by the Free Software Foundation; either version | |
| 9 | * 2 of the Licence, or (at your option) any later version. | |
| 10 | */ | |
| 11 | ||
| 12 | #include <linux/ip.h> | |
| d991b4a3 | 13 | #include <linux/ipv6.h> |
| be6e6707 DH |
14 | #include <linux/udp.h> |
| 15 | #include "ar-internal.h" | |
| 16 | ||
| d991b4a3 DH |
17 | /* |
| 18 | * Fill out a peer address from a socket buffer containing a packet. | |
| 19 | */ | |
| 20 | int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *srx, struct sk_buff *skb) | |
| 21 | { | |
| 22 | memset(srx, 0, sizeof(*srx)); | |
| 23 | ||
| 24 | switch (ntohs(skb->protocol)) { | |
| 25 | case ETH_P_IP: | |
| 26 | srx->transport_type = SOCK_DGRAM; | |
| 27 | srx->transport_len = sizeof(srx->transport.sin); | |
| 28 | srx->transport.sin.sin_family = AF_INET; | |
| 29 | srx->transport.sin.sin_port = udp_hdr(skb)->source; | |
| 30 | srx->transport.sin.sin_addr.s_addr = ip_hdr(skb)->saddr; | |
| 31 | return 0; | |
| 32 | ||
| 33 | case ETH_P_IPV6: | |
| 34 | srx->transport_type = SOCK_DGRAM; | |
| 35 | srx->transport_len = sizeof(srx->transport.sin6); | |
| 36 | srx->transport.sin6.sin6_family = AF_INET6; | |
| 37 | srx->transport.sin6.sin6_port = udp_hdr(skb)->source; | |
| 38 | srx->transport.sin6.sin6_addr = ipv6_hdr(skb)->saddr; | |
| 39 | return 0; | |
| 40 | ||
| 41 | default: | |
| 42 | pr_warn_ratelimited("AF_RXRPC: Unknown eth protocol %u\n", | |
| 43 | ntohs(skb->protocol)); | |
| 44 | return -EAFNOSUPPORT; | |
| 45 | } | |
| 46 | } |