File net-smc-add-support-for-user-defined-EIDs of Package linux-glibc-devel

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File net-smc-add-support-for-user-defined-EIDs of Package linux-glibc-devel

From: Karsten Graul <kgraul@linux.ibm.com>
Date: Tue, 14 Sep 2021 10:35:05 +0200
Subject: net/smc: add support for user defined EIDs
Git-commit: fa0866625543b4d8b3d026e4e0ef5ec25a453920
Patch-mainline: v5.16-rc1
References: jsc#SLE-18331

SMC-Dv2 allows users to define EIDs which allows to create separate
name spaces enabling users to cluster their SMC-Dv2 connections.
Add support for user defined EIDs and extent the generic netlink
interface so users can add, remove and dump EIDs.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Reviewed-by: Guvenc Gulce  <guvenc@linux.ibm.com>
Signed-off-by: Guvenc Gulce <guvenc@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 include/uapi/linux/smc.h |   15 ++
 net/smc/af_smc.c         |   34 +++---
 net/smc/smc.h            |    3 
 net/smc/smc_clc.c        |  263 ++++++++++++++++++++++++++++++++++++++++++++---
 net/smc/smc_clc.h        |   16 ++
 net/smc/smc_core.h       |    1 
 net/smc/smc_netlink.c    |   32 +++++
 net/smc/smc_netlink.h    |    2 
 8 files changed, 335 insertions(+), 31 deletions(-)

--- a/include/linux/smc.h
+++ b/include/linux/smc.h
@@ -38,6 +38,9 @@ enum {				/* SMC PNET Table commands */
 #define SMC_GENL_FAMILY_VERSION		1
 
 #define SMC_PCI_ID_STR_LEN		16 /* Max length of pci id string */
+#define SMC_MAX_HOSTNAME_LEN		32 /* Max length of the hostname */
+#define SMC_MAX_UEID			4  /* Max number of user EIDs */
+#define SMC_MAX_EID_LEN			32 /* Max length of an EID */
 
 /* SMC_GENL_FAMILY commands */
 enum {
@@ -49,6 +52,10 @@ enum {
 	SMC_NETLINK_GET_DEV_SMCR,
 	SMC_NETLINK_GET_STATS,
 	SMC_NETLINK_GET_FBACK_STATS,
+	SMC_NETLINK_DUMP_UEID,
+	SMC_NETLINK_ADD_UEID,
+	SMC_NETLINK_REMOVE_UEID,
+	SMC_NETLINK_FLUSH_UEID,
 };
 
 /* SMC_GENL_FAMILY top level attributes */
@@ -242,4 +249,12 @@ enum {
 	__SMC_NLA_FBACK_STATS_MAX,
 	SMC_NLA_FBACK_STATS_MAX = __SMC_NLA_FBACK_STATS_MAX - 1
 };
+
+/* SMC_NETLINK_UEID attributes */
+enum {
+	SMC_NLA_EID_TABLE_UNSPEC,
+	SMC_NLA_EID_TABLE_ENTRY,	/* string */
+	__SMC_NLA_EID_TABLE_MAX,
+	SMC_NLA_EID_TABLE_MAX = __SMC_NLA_EID_TABLE_MAX - 1
+};
 #endif /* _LINUX_SMC_H */

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