linux-kernel - [PATCH] net: add pf_family_names[] for protocol family

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Date:   Fri, 18 Jun 2021 22:32:47 +0800
From:   Yejune Deng <yejune.deng@...il.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yejune Deng <yejune.deng@...il.com>
Subject: [PATCH] net: add pf_family_names[] for protocol family

Modify the pr_info content from int to char *, this looks more readable.

Signed-off-by: Yejune Deng <yejune.deng@...il.com>
---
 include/uapi/linux/net.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 net/socket.c             |  2 +-
 2 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/net.h b/include/uapi/linux/net.h
index 4dabec6..a28caaf 100644
--- a/include/uapi/linux/net.h
+++ b/include/uapi/linux/net.h
@@ -55,4 +55,52 @@ typedef enum {
 
 #define __SO_ACCEPTCON	(1 << 16)	/* performed a listen		*/
 
+static const char * const pf_family_names[] = {
+	[PF_UNSPEC]	= "PF_UNSPEC",
+	[PF_UNIX]	= "PF_UNIX/PF_LOCAL",
+	[PF_INET]	= "PF_INET",
+	[PF_AX25]	= "PF_AX25",
+	[PF_IPX]	= "PF_IPX",
+	[PF_APPLETALK]	= "PF_APPLETALK",
+	[PF_NETROM]	= "PF_NETROM",
+	[PF_BRIDGE]	= "PF_BRIDGE",
+	[PF_ATMPVC]	= "PF_ATMPVC",
+	[PF_X25]	= "PF_X25",
+	[PF_INET6]	= "PF_INET6",
+	[PF_ROSE]	= "PF_ROSE",
+	[PF_DECnet]	= "PF_DECnet",
+	[PF_NETBEUI]	= "PF_NETBEUI",
+	[PF_SECURITY]	= "PF_SECURITY",
+	[PF_KEY]	= "PF_KEY",
+	[PF_NETLINK]	= "PF_NETLINK/PF_ROUTE",
+	[PF_PACKET]	= "PF_PACKET",
+	[PF_ASH]	= "PF_ASH",
+	[PF_ECONET]	= "PF_ECONET",
+	[PF_ATMSVC]	= "PF_ATMSVC",
+	[PF_RDS]	= "PF_RDS",
+	[PF_SNA]	= "PF_SNA",
+	[PF_IRDA]	= "PF_IRDA",
+	[PF_PPPOX]	= "PF_PPPOX",
+	[PF_WANPIPE]	= "PF_WANPIPE",
+	[PF_LLC]	= "PF_LLC",
+	[PF_IB]		= "PF_IB",
+	[PF_MPLS]	= "PF_MPLS",
+	[PF_CAN]	= "PF_CAN",
+	[PF_TIPC]	= "PF_TIPC",
+	[PF_BLUETOOTH]	= "PF_BLUETOOTH",
+	[PF_IUCV]	= "PF_IUCV",
+	[PF_RXRPC]	= "PF_RXRPC",
+	[PF_ISDN]	= "PF_ISDN",
+	[PF_PHONET]	= "PF_PHONET",
+	[PF_IEEE802154]	= "PF_IEEE802154",
+	[PF_CAIF]	= "PF_CAIF",
+	[PF_ALG]	= "PF_ALG",
+	[PF_NFC]	= "PF_NFC",
+	[PF_VSOCK]	= "PF_VSOCK",
+	[PF_KCM]	= "PF_KCM",
+	[PF_QIPCRTR]	= "PF_QIPCRTR",
+	[PF_SMC]	= "PF_SMC",
+	[PF_XDP]	= "PF_XDP",
+};
+
 #endif /* _UAPI_LINUX_NET_H */
diff --git a/net/socket.c b/net/socket.c
index 27e3e7d..ff544cf 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2988,7 +2988,7 @@ int sock_register(const struct net_proto_family *ops)
 	}
 	spin_unlock(&net_family_lock);
 
-	pr_info("NET: Registered protocol family %d\n", ops->family);
+	pr_info("NET: Registered %s protocol family\n", pf_family_names[ops->family]);
 	return err;
 }
 EXPORT_SYMBOL(sock_register);
-- 
2.7.4