diff options
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_hdrs.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/include/rdma/ib_hdrs.h b/include/rdma/ib_hdrs.h index c755325f0831..9cf42bcc8317 100644 --- a/include/rdma/ib_hdrs.h +++ b/include/rdma/ib_hdrs.h @@ -181,4 +181,64 @@ static inline void put_ib_ateth_compare(u64 val, struct ib_atomic_eth *ateth) ib_u64_put(val, &ateth->compare_data); } +/* + * 9B/IB Packet Format + */ +#define IB_LNH_MASK 3 +#define IB_SC_MASK 0xf +#define IB_SC_SHIFT 12 +#define IB_SL_MASK 0xf +#define IB_SL_SHIFT 4 + +static inline u8 ib_get_lnh(struct ib_header *hdr) +{ + return (be16_to_cpu(hdr->lrh[0]) & IB_LNH_MASK); +} + +static inline u8 ib_get_sc(struct ib_header *hdr) +{ + return ((be16_to_cpu(hdr->lrh[0]) >> IB_SC_SHIFT) & IB_SC_MASK); +} + +static inline u8 ib_get_sl(struct ib_header *hdr) +{ + return ((be16_to_cpu(hdr->lrh[0]) >> IB_SL_SHIFT) & IB_SL_MASK); +} + +static inline u16 ib_get_dlid(struct ib_header *hdr) +{ + return (be16_to_cpu(hdr->lrh[1])); +} + +static inline u16 ib_get_slid(struct ib_header *hdr) +{ + return (be16_to_cpu(hdr->lrh[3])); +} + +/* + * BTH + */ +#define IB_BTH_OPCODE_MASK 0xff +#define IB_BTH_OPCODE_SHIFT 24 +#define IB_BTH_PAD_MASK 3 +#define IB_BTH_PKEY_MASK 0xffff +#define IB_BTH_PAD_SHIFT 20 + +static inline u8 ib_bth_get_pad(struct ib_other_headers *ohdr) +{ + return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_PAD_SHIFT) & + IB_BTH_PAD_MASK); +} + +static inline u16 ib_bth_get_pkey(struct ib_other_headers *ohdr) +{ + return (be32_to_cpu(ohdr->bth[0]) & IB_BTH_PKEY_MASK); +} + +static inline u8 ib_bth_get_opcode(struct ib_other_headers *ohdr) +{ + return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_OPCODE_SHIFT) & + IB_BTH_OPCODE_MASK); +} + #endif /* IB_HDRS_H */ |