Merge tag 'v5.3-rc7' into devel

Linux 5.3-rc7

1 files changed, 9 insertions, 0 deletions

diff --git a/net/rxrpc/protocol.h b/net/rxrpc/protocol.h
index 99ce322d7caa..49bb972539aa 100644
--- a/net/rxrpc/protocol.h
+++ b/net/rxrpc/protocol.h
@@ -89,6 +89,15 @@ struct rxrpc_jumbo_header {
 #define RXRPC_JUMBO_DATALEN     1412    /* non-terminal jumbo packet data length */
 #define RXRPC_JUMBO_SUBPKTLEN   (RXRPC_JUMBO_DATALEN + sizeof(struct rxrpc_jumbo_header))
 
+/*
+ * The maximum number of subpackets that can possibly fit in a UDP packet is:
+ *
+ *      ((max_IP - IP_hdr - UDP_hdr) / RXRPC_JUMBO_SUBPKTLEN) + 1
+ *      = ((65535 - 28 - 28) / 1416) + 1
+ *      = 46 non-terminal packets and 1 terminal packet.
+ */
+#define RXRPC_MAX_NR_JUMBO      47
+
 /*****************************************************************************/
 /*
  * on-the-wire Rx ACK packet data payload