linux-kernel - [PATCH net 1/2] net/smc: bugfix for smcr v2 server connect success statistic

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Message-Id: <20230908033143.89489-2-guangguan.wang@linux.alibaba.com>
Date:   Fri,  8 Sep 2023 11:31:42 +0800
From:   Guangguan Wang <guangguan.wang@...ux.alibaba.com>
To:     wenjia@...ux.ibm.com, jaka@...ux.ibm.com, kgraul@...ux.ibm.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Cc:     tonylu@...ux.alibaba.com, alibuda@...ux.alibaba.com,
        guwen@...ux.alibaba.com, linux-s390@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net 1/2] net/smc: bugfix for smcr v2 server connect success statistic

In the macro SMC_STAT_SERV_SUCC_INC, the smcd_version is used
to determin whether to increase the v1 statistic or the v2
statistic. It is correct for SMCD. But for SMCR, smcr_version
should be used.

Signed-off-by: Guangguan Wang <guangguan.wang@...ux.alibaba.com>
---
 net/smc/smc_stats.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/smc/smc_stats.h b/net/smc/smc_stats.h
index b60fe1eb37ab..aa8928975cc6 100644
--- a/net/smc/smc_stats.h
+++ b/net/smc/smc_stats.h
@@ -243,8 +243,9 @@ while (0)
 #define SMC_STAT_SERV_SUCC_INC(net, _ini) \
 do { \
 	typeof(_ini) i = (_ini); \
-	bool is_v2 = (i->smcd_version & SMC_V2); \
 	bool is_smcd = (i->is_smcd); \
+	u8 version = is_smcd ? i->smcd_version : i->smcr_version; \
+	bool is_v2 = (version & SMC_V2); \
 	typeof(net->smc.smc_stats) smc_stats = (net)->smc.smc_stats; \
 	if (is_v2 && is_smcd) \
 		this_cpu_inc(smc_stats->smc[SMC_TYPE_D].srv_v2_succ_cnt); \
-- 
2.24.3 (Apple Git-128)