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44 lines
1.2 KiB
44 lines
1.2 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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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 ([email protected]) |
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*/ |
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#include <linux/ip.h> |
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#include <linux/ipv6.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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* Fill out a peer address from a socket buffer containing a packet. |
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*/ |
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int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *srx, struct sk_buff *skb) |
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{ |
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memset(srx, 0, sizeof(*srx)); |
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switch (ntohs(skb->protocol)) { |
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case ETH_P_IP: |
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srx->transport_type = SOCK_DGRAM; |
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srx->transport_len = sizeof(srx->transport.sin); |
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srx->transport.sin.sin_family = AF_INET; |
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srx->transport.sin.sin_port = udp_hdr(skb)->source; |
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srx->transport.sin.sin_addr.s_addr = ip_hdr(skb)->saddr; |
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return 0; |
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#ifdef CONFIG_AF_RXRPC_IPV6 |
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case ETH_P_IPV6: |
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srx->transport_type = SOCK_DGRAM; |
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srx->transport_len = sizeof(srx->transport.sin6); |
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srx->transport.sin6.sin6_family = AF_INET6; |
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srx->transport.sin6.sin6_port = udp_hdr(skb)->source; |
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srx->transport.sin6.sin6_addr = ipv6_hdr(skb)->saddr; |
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return 0; |
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#endif |
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default: |
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pr_warn_ratelimited("AF_RXRPC: Unknown eth protocol %u\n", |
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ntohs(skb->protocol)); |
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return -EAFNOSUPPORT; |
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} |
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}
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