Messages in this thread | | | Date | Fri, 22 Sep 2023 01:32:33 +0200 | From | Wenjia Zhang <> | Subject | Re: [PATCH net-next v3 05/18] net/smc: reserve CHID range for SMC-D virtual device |
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On 21.09.23 15:19, Wen Gu wrote: > This patch reserve CHID range from 0xFF00 to 0xFFFF for SMC-D virtual > device and introduces helpers to identify them. > > Signed-off-by: Wen Gu <guwen@linux.alibaba.com> > --- > net/smc/smc_ism.h | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > > diff --git a/net/smc/smc_ism.h b/net/smc/smc_ism.h > index 14d2e77..2ecc8de 100644 > --- a/net/smc/smc_ism.h > +++ b/net/smc/smc_ism.h > @@ -15,6 +15,9 @@ > > #include "smc.h" > > +#define SMC_VIRT_ISM_CHID_MAX 0xFFFF > +#define SMC_VIRT_ISM_CHID_MIN 0xFF00 > + > struct smcd_dev_list { /* List of SMCD devices */ > struct list_head list; > struct mutex mutex; /* Protects list of devices */ > @@ -57,4 +60,16 @@ static inline int smc_ism_write(struct smcd_dev *smcd, u64 dmb_tok, > return rc < 0 ? rc : 0; > } > > +static inline bool __smc_ism_is_virtdev(u16 chid) > +{ > + return (chid >= SMC_VIRT_ISM_CHID_MIN && chid <= SMC_VIRT_ISM_CHID_MAX); > +} > + > +static inline bool smc_ism_is_virtdev(struct smcd_dev *smcd) > +{ > + u16 chid = smcd->ops->get_chid(smcd); > + > + return __smc_ism_is_virtdev(chid); > +} > + I'm wondering if barrier is needed here. > #endif
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