From: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Date: Sat, 18 Jul 2020 00:46:40 +0530
Subject: crypto/chtls: Enable tcp window scaling option
Patch-mainline: v5.9-rc1
Git-commit: c3466a768eaa8d08551dafd552bac2f2698f73cc
References: jsc#SLE-15129

Enable tcp window scaling option in hw based on sysctl settings
and option in connection request.

v1->v2:
- Set window scale option based on option in connection request.

Signed-off-by: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/crypto/chelsio/chtls/chtls_cm.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/crypto/chelsio/chtls/chtls_cm.c
+++ b/drivers/crypto/chelsio/chtls/chtls_cm.c
@@ -1056,6 +1056,7 @@ static void chtls_pass_accept_rpl(struct
 	opt2 |= CONG_CNTRL_V(CONG_ALG_NEWRENO);
 	opt2 |= T5_ISS_F;
 	opt2 |= T5_OPT_2_VALID_F;
+	opt2 |= WND_SCALE_EN_V(WSCALE_OK(tp));
 	rpl5->opt0 = cpu_to_be64(opt0);
 	rpl5->opt2 = cpu_to_be32(opt2);
 	rpl5->iss = cpu_to_be32((prandom_u32() & ~7UL) - 1);