From 22fb85ffaefb80a22c815008a500273b3f61bba3 Mon Sep 17 00:00:00 2001 From: Geliang Tang Date: Wed, 9 Dec 2020 15:51:20 -0800 Subject: mptcp: add port support for ADD_ADDR suboption writing In rfc8684, the length of ADD_ADDR suboption with IPv4 address and port is 18 octets, but mptcp_write_options is 32-bit aligned, so we need to pad it to 20 octets. All the other port related option lengths need to be added up 2 octets similarly. This patch added a new field 'port' in mptcp_out_options. When this field is set with a port number, we need to add up 4 octets for the ADD_ADDR suboption, and put the port number into the suboption. Signed-off-by: Geliang Tang Signed-off-by: Mat Martineau Signed-off-by: David S. Miller --- include/net/mptcp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net/mptcp.h') diff --git a/include/net/mptcp.h b/include/net/mptcp.h index b6cf07143a8a..5694370be3d4 100644 --- a/include/net/mptcp.h +++ b/include/net/mptcp.h @@ -46,6 +46,7 @@ struct mptcp_out_options { #endif }; u8 addr_id; + u16 port; u64 ahmac; u8 rm_id; u8 join_id; -- cgit