checksum feature is no longer (partly) supported, we can remove them as
well.

Signed-off-by: Matthieu Baerts <matthieu.baerts(a)tessares.net>
---

Notes:
    To be squashed in "mptcp: Implement MPTCP receive path"

 include/linux/tcp.h | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 3b69ab99e666..58902cea4a26 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -103,7 +103,6 @@ struct tcp_options_received {
 		u64	data_seq;
 		u32	subflow_seq;
 		u16	data_len;
-		__sum16	checksum;
 		u8      mp_capable : 1,
 			mp_join : 1,
 			dss : 1,
@@ -118,11 +117,10 @@ struct tcp_options_received {
 		u8	dss_flags;
 		u8	use_map:1,
 			dsn64:1,
-			use_checksum:1,
 			data_fin:1,
 			use_ack:1,
 			ack64:1,
-			__unused:2;
+			__unused:3;
 		u8	add_addr : 1,
 			rm_addr : 1,
 			family : 4;
-- 
2.20.1