From: Jeffrey Altman <[email protected]>
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 <[email protected]>
Acked-by: David Howells <[email protected]>
Signed-off-by: Marc Dionne <[email protected]>
---
v2: Added Fixes: tag
net/rxrpc/conn_object.c | 9 ++-------
1 file 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
--
2.44.0
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <[email protected]>:
On Fri, 19 Apr 2024 13:30:57 -0300 you wrote:
> From: Jeffrey Altman <[email protected]>
>
> 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, ...).
>
> [...]
Here is the summary with links:
- [net,v2] rxrpc: Clients must accept conn from any address
https://git.kernel.org/netdev/net/c/8953285d7bd6
You are awesome, thank you!
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