diff options
Diffstat (limited to 'net/rxrpc/utils.c')
| -rw-r--r-- | net/rxrpc/utils.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/net/rxrpc/utils.c b/net/rxrpc/utils.c index f28122a15a24..d3db02ecc37f 100644 --- a/net/rxrpc/utils.c +++ b/net/rxrpc/utils.c @@ -10,6 +10,7 @@ */ #include <linux/ip.h> +#include <linux/ipv6.h> #include <linux/udp.h> #include "ar-internal.h" @@ -39,3 +40,34 @@ void rxrpc_get_addr_from_skb(struct rxrpc_local *local, BUG(); } } + +/* + * Fill out a peer address from a socket buffer containing a packet. + */ +int rxrpc_extract_addr_from_skb(struct sockaddr_rxrpc *srx, struct sk_buff *skb) +{ + memset(srx, 0, sizeof(*srx)); + + 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.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: + pr_warn_ratelimited("AF_RXRPC: Unknown eth protocol %u\n", + ntohs(skb->protocol)); + return -EAFNOSUPPORT; + } +} |