*/
#include <linux/ip.h>
+#include <linux/ipv6.h>
#include <linux/udp.h>
#include "ar-internal.h"
/*
- * Set up an RxRPC address from a socket buffer.
+ * Fill out a peer address from a socket buffer containing a packet.
*/
-void rxrpc_get_addr_from_skb(struct rxrpc_local *local,
- const struct sk_buff *skb,
- struct sockaddr_rxrpc *srx)
+int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *srx, struct sk_buff *skb)
{
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:
+ switch (ntohs(skb->protocol)) {
+ case ETH_P_IP:
+ srx->transport_type = SOCK_DGRAM;
+ srx->transport_len = sizeof(srx->transport.sin);
+ srx->transport.sin.sin_family = 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;
+ srx->transport.sin.sin_addr.s_addr = ip_hdr(skb)->saddr;
+ return 0;
+
+ case ETH_P_IPV6:
+ srx->transport_type = SOCK_DGRAM;
+ srx->transport_len = sizeof(srx->transport.sin6);
+ srx->transport.sin6.sin6_family = AF_INET6;
+ srx->transport.sin6.sin6_port = udp_hdr(skb)->source;
+ srx->transport.sin6.sin6_addr = ipv6_hdr(skb)->saddr;
+ return 0;
default:
- BUG();
+ pr_warn_ratelimited("AF_RXRPC: Unknown eth protocol %u\n",
+ ntohs(skb->protocol));
+ return -EAFNOSUPPORT;
}
}