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authorDavid Howells <dhowells@redhat.com>2016-06-29 14:40:39 +0100
committerDavid Howells <dhowells@redhat.com>2016-07-06 10:49:57 +0100
commitd991b4a32f65076efaf78739c4a46406ca8c7e79 (patch)
treee300115d7a3a8fcd6c35eab1b409b81f6719cedd /net/rxrpc/utils.c
parent7877a4a4bdf0d782276f1cba868878aee77718ee (diff)
rxrpc: Move peer lookup from call-accept to new-incoming-conn
Move the lookup of a peer from a call that's being accepted into the function that creates a new incoming connection. This will allow us to avoid incrementing the peer's usage count in some cases in future. Note that I haven't bother to integrate rxrpc_get_addr_from_skb() with rxrpc_extract_addr_from_skb() as I'm going to delete the former in the very near future. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc/utils.c')
-rw-r--r--net/rxrpc/utils.c32
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;
+ }
+}