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net/smc: Add netlink support for SMC fallback statistics

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Add support to collect more detailed SMC fallback reason statistics and
provide these statistics to user space on the netlink interface.

Signed-off-by: Guvenc Gulce <guvenc@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guvenc Gulce 2021-06-16 16:52:57 +02:00 • committed by David S. Miller
parent 8c40602b4b
commit f0dd7bf5e3
5 changed files with 113 additions and 1 deletions
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14
include/uapi/linux/smc.h
View file

@ -48,6 +48,7 @@ enum {
SMC_NETLINK_GET_DEV_SMCD,
SMC_NETLINK_GET_DEV_SMCR,
SMC_NETLINK_GET_STATS,
SMC_NETLINK_GET_FBACK_STATS,
};
/* SMC_GENL_FAMILY top level attributes */
@ -60,6 +61,7 @@ enum {
SMC_GEN_DEV_SMCD, /* nest */
SMC_GEN_DEV_SMCR, /* nest */
SMC_GEN_STATS, /* nest */
SMC_GEN_FBACK_STATS, /* nest */
__SMC_GEN_MAX,
SMC_GEN_MAX = __SMC_GEN_MAX - 1
};
@ -228,4 +230,16 @@ enum {
__SMC_NLA_STATS_MAX,
SMC_NLA_STATS_MAX = __SMC_NLA_STATS_MAX - 1
};
/* SMC_GEN_FBACK_STATS attributes */
enum {
SMC_NLA_FBACK_STATS_PAD,
SMC_NLA_FBACK_STATS_TYPE, /* u8 */
SMC_NLA_FBACK_STATS_SRV_CNT, /* u64 */
SMC_NLA_FBACK_STATS_CLNT_CNT, /* u64 */
SMC_NLA_FBACK_STATS_RSN_CODE, /* u32 */
SMC_NLA_FBACK_STATS_RSN_CNT, /* u16 */
__SMC_NLA_FBACK_STATS_MAX,
SMC_NLA_FBACK_STATS_MAX = __SMC_NLA_FBACK_STATS_MAX - 1
};
#endif /* _UAPI_LINUX_SMC_H */