[PATCH net-next 4/5] tun: Add support for SCTP checksum offload

[Vladislav Yasevich]

Adds a new tun offload flag to allow for SCTP checksum offload.
The flag has to be set by the user and defaults to "no offload".

Signed-off-by: Vladislav Yasevich <vyase...@redhat.com>
---
 drivers/net/tun.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index a1ba262..263bcbe 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -2719,6 +2719,11 @@ static int set_offload(struct tun_struct *tun, unsigned 
long arg)
                arg &= ~TUN_F_UFO;
        }
 
+       if (arg & TUN_F_SCTP_CSUM) {
+               features |= NETIF_F_SCTP_CRC;
+               arg &= ~TUN_F_SCTP_CSUM;
+       }
+
        /* This gives the user a way to test for new features in future by
         * trying to set them. */
        if (arg)
-- 
2.9.5