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authorJeffrey Altman <jaltman@auristor.com>2024-04-19 19:30:57 +0300
committerJakub Kicinski <kuba@kernel.org>2024-05-02 00:49:56 +0300
commit8953285d7bd63c12b007432a9b4587fa2fad49fb (patch)
treef872de11c157ce1c2ca4cee062ee2f1e12895e86
parentd091e579b864fa790dd6a0cd537a22c383126681 (diff)
downloadlinux-8953285d7bd63c12b007432a9b4587fa2fad49fb.tar.xz
rxrpc: Clients must accept conn from any address
The find connection logic of Transarc's Rx was modified in the mid-1990s to support multi-homed servers which might send a response packet from an address other than the destination address in the received packet. The rules for accepting a packet by an Rx initiator (RX_CLIENT_CONNECTION) were altered to permit acceptance of a packet from any address provided that the port number was unchanged and all of the connection identifiers matched (Epoch, CID, SecurityClass, ...). This change applies the same rules to the Linux implementation which makes it consistent with IBM AFS 3.6, Arla, OpenAFS and AuriStorFS. Fixes: 17926a79320a ("[AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel both") Signed-off-by: Jeffrey Altman <jaltman@auristor.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Marc Dionne <marc.dionne@auristor.com> Link: https://lore.kernel.org/r/20240419163057.4141728-1-marc.dionne@auristor.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r--net/rxrpc/conn_object.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c
index 0af4642aeec4..1539d315afe7 100644
--- a/net/rxrpc/conn_object.c
+++ b/net/rxrpc/conn_object.c
@@ -119,18 +119,13 @@ struct rxrpc_connection *rxrpc_find_client_connection_rcu(struct rxrpc_local *lo
switch (srx->transport.family) {
case AF_INET:
if (peer->srx.transport.sin.sin_port !=
- srx->transport.sin.sin_port ||
- peer->srx.transport.sin.sin_addr.s_addr !=
- srx->transport.sin.sin_addr.s_addr)
+ srx->transport.sin.sin_port)
goto not_found;
break;
#ifdef CONFIG_AF_RXRPC_IPV6
case AF_INET6:
if (peer->srx.transport.sin6.sin6_port !=
- srx->transport.sin6.sin6_port ||
- memcmp(&peer->srx.transport.sin6.sin6_addr,
- &srx->transport.sin6.sin6_addr,
- sizeof(struct in6_addr)) != 0)
+ srx->transport.sin6.sin6_port)
goto not_found;
break;
#endif