[PATCH AUTOSEL for 4.14 03/64] net/smc: use sk_rcvbuf as start for rmb creation

[alexander . levin]

From: Ursula Braun <ursula.braun@xxxxxxxxxx>

[ Upstream commit 4e1061f4a2bba1669c7297455c73ddafbebf2b12 ]

Commit 3e034725c0d8 ("net/smc: common functions for RMBs and send buffers")
merged handling of SMC receive and send buffers. It introduced sk_buf_size
as merged start value for size determination. But since sk_buf_size is not
used at all, sk_sndbuf is erroneously used as start for rmb creation.
This patch makes sure, sk_buf_size is really used as intended, and
sk_rcvbuf is used as start value for rmb creation.

Fixes: 3e034725c0d8 ("net/smc: common functions for RMBs and send buffers")
Signed-off-by: Ursula Braun <ubraun@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Hans Wippel <hwippel@xxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
---
 net/smc/smc_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 413e3868fbf3..7166e7ecbe86 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -571,7 +571,7 @@ static int __smc_buf_create(struct smc_sock *smc, bool is_rmb)
 		/* use socket send buffer size (w/o overhead) as start value */
 		sk_buf_size = smc->sk.sk_sndbuf / 2;
 
-	for (bufsize_short = smc_compress_bufsize(smc->sk.sk_sndbuf / 2);
+	for (bufsize_short = smc_compress_bufsize(sk_buf_size);
 	     bufsize_short >= 0; bufsize_short--) {
 
 		if (is_rmb) {
-- 
2.11.0