netdev - [PATCH net-next 4/4] net/smc: Enable module load on netlink usage

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Date:   Mon, 25 Jul 2022 16:10:00 +0200
From:   Wenjia Zhang <wenjia@...ux.ibm.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, linux-s390@...r.kernel.org,
        Heiko Carstens <hca@...ux.ibm.com>,
        Karsten Graul <kgraul@...ux.ibm.com>,
        Alexandra Winter <wintera@...ux.ibm.com>,
        Stefan Raspl <raspl@...ux.ibm.com>,
        Wenjia Zhang <wenjia@...ux.ibm.com>
Subject: [PATCH net-next 4/4] net/smc: Enable module load on netlink usage

From: Stefan Raspl <raspl@...ux.ibm.com>

Previously, the smc and smc_diag modules were automatically loaded as
dependencies of the ism module whenever an ISM device was present.
With the pending rework of the ISM API, the smc module will no longer
automatically be loaded in presence of an ISM device. Usage of an AF_SMC
socket will still trigger loading of the smc modules, but usage of a
netlink socket will not.
This is addressed by setting the correct module aliases.

Signed-off-by: Stefan Raspl <raspl@...ux.ibm.com>
Signed-off-by: Wenjia Zhang < wenjia@...ux.ibm.com>
---
 net/smc/af_smc.c   | 1 +
 net/smc/smc_diag.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 6e70d9c10b78..79c1318af1fe 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -3515,3 +3515,4 @@ MODULE_DESCRIPTION("smc socket address family");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_NETPROTO(PF_SMC);
 MODULE_ALIAS_TCP_ULP("smc");
+MODULE_ALIAS_GENL_FAMILY(SMC_GENL_FAMILY_NAME);
diff --git a/net/smc/smc_diag.c b/net/smc/smc_diag.c
index 1fca2f90a9c7..80ea7d954ece 100644
--- a/net/smc/smc_diag.c
+++ b/net/smc/smc_diag.c
@@ -268,3 +268,4 @@ module_init(smc_diag_init);
 module_exit(smc_diag_exit);
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 43 /* AF_SMC */);
+MODULE_ALIAS_GENL_FAMILY(SMCR_GENL_FAMILY_NAME);
-- 
2.35.2