rxrpc: Fix the basic transmit DATA packet content size at 1412 bytes

dhowells · dhowells · commit 182f50562490 · 2016-09-17T10:54:32.000+01:00
Fix the basic transmit DATA packet content size at 1412 bytes so that they
can be arbitrarily assembled into jumbo packets.

In the future, I'm thinking of moving to keeping a jumbo packet header at
the beginning of each packet in the Tx queue and creating the packet header
on the spot when kernel_sendmsg() is invoked.  That way, jumbo packets can
be assembled on the spur of the moment for (re-)transmission.

Signed-off-by: David Howells &lt;dhowells@redhat.com&gt;
diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c
@@ -214,7 +214,7 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
 					goto maybe_error;
 			}
 
-			max = call->conn->params.peer->maxdata;
+			max = RXRPC_JUMBO_DATALEN;
 			max -= call->conn->security_size;
 			max &= ~(call->conn->size_align - 1UL);
 

Original file line number	Diff line number	Diff line change
`@@ -214,7 +214,7 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,`
`214`	`214`	`goto maybe_error;`
`215`	`215`	`}`
`216`	`216`
`217`		`- max = call->conn->params.peer->maxdata;`
	`217`	`+ max = RXRPC_JUMBO_DATALEN;`
`218`	`218`	`max -= call->conn->security_size;`
`219`	`219`	`max &= ~(call->conn->size_align - 1UL);`
`220`	`220`