From: Jeffrey Altman Date: Fri, 19 Apr 2024 16:30:57 +0000 (-0300) Subject: rxrpc: Clients must accept conn from any address X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8953285d7bd63c12b007432a9b4587fa2fad49fb;p=linux.git 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 Acked-by: David Howells Signed-off-by: Marc Dionne Link: https://lore.kernel.org/r/20240419163057.4141728-1-marc.dionne@auristor.com Signed-off-by: Jakub Kicinski --- diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c index 0af4642aeec4b..1539d315afe74 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