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net/smc: use sk_rcvbuf as start for rmb creation

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[ Upstream commit 4e1061f4a2 ]

Commit 3e034725c0 ("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: 3e034725c0 ("net/smc: common functions for RMBs and send buffers")
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Hans Wippel <hwippel@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ursula Braun 2017-11-21 13:23:53 +01:00 committed by Greg Kroah-Hartman
parent f0d564230e
commit 4d0d1bc65b
1 changed files with 1 additions and 1 deletions
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2
net/smc/smc_core.c
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@ -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) {