diff options
Diffstat (limited to 'net/smc')
| -rw-r--r-- | net/smc/smc_ism.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/net/smc/smc_ism.h b/net/smc/smc_ism.h index 832b2f42d79f..d1228a615f23 100644 --- a/net/smc/smc_ism.h +++ b/net/smc/smc_ism.h @@ -15,6 +15,8 @@ #include "smc.h" +#define SMC_VIRTUAL_ISM_CHID_MASK 0xFF00 + struct smcd_dev_list { /* List of SMCD devices */ struct list_head list; struct mutex mutex; /* Protects list of devices */ @@ -56,4 +58,22 @@ static inline int smc_ism_write(struct smcd_dev *smcd, u64 dmb_tok, return rc < 0 ? rc : 0; } +static inline bool __smc_ism_is_virtual(u16 chid) +{ + /* CHIDs in range of 0xFF00 to 0xFFFF are reserved + * for virtual ISM device. + * + * loopback-ism: 0xFFFF + * virtio-ism: 0xFF00 ~ 0xFFFE + */ + return ((chid & 0xFF00) == 0xFF00); +} + +static inline bool smc_ism_is_virtual(struct smcd_dev *smcd) +{ + u16 chid = smcd->ops->get_chid(smcd); + + return __smc_ism_is_virtual(chid); +} + #endif |