diff options
| author | Don Hiatt <don.hiatt@intel.com> | 2017-05-12 19:19:55 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-06-27 23:56:33 +0300 |
| commit | 7dafbab3753fcf59bc81748e5b2c5bf04e1c62c7 (patch) | |
| tree | 5770099bfb9f0e2e920a934a945a5b5f9ac92ca8 /include/rdma/ib_hdrs.h | |
| parent | aa560df381f7199fafa4e7f71382de28f0400270 (diff) | |
| download | linux-7dafbab3753fcf59bc81748e5b2c5bf04e1c62c7.tar.xz | |
IB/hfi1: Add functions to parse BTH/IB headers
Improve code readablity by adding inline functions
to read specific BTH/IB fields without knowledge of
byte offsets.
Reviewed-by: Brian Welty <brian.welty@intel.com>
Reviewed-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma/ib_hdrs.h')
| -rw-r--r-- | include/rdma/ib_hdrs.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/include/rdma/ib_hdrs.h b/include/rdma/ib_hdrs.h index 5519f31f043a..c124d515f7d5 100644 --- a/include/rdma/ib_hdrs.h +++ b/include/rdma/ib_hdrs.h @@ -193,8 +193,12 @@ static inline void put_ib_ateth_compare(u64 val, struct ib_atomic_eth *ateth) #define IB_LNH_MASK 3 #define IB_SC_MASK 0xf #define IB_SC_SHIFT 12 +#define IB_SC5_MASK 0x10 #define IB_SL_MASK 0xf #define IB_SL_SHIFT 4 +#define IB_SL_SHIFT 4 +#define IB_LVER_MASK 0xf +#define IB_LVER_SHIFT 8 static inline u8 ib_get_lnh(struct ib_header *hdr) { @@ -206,6 +210,11 @@ 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 bool ib_is_sc5(u16 sc5) +{ + return !!(sc5 & IB_SC5_MASK); +} + static inline u8 ib_get_sl(struct ib_header *hdr) { return ((be16_to_cpu(hdr->lrh[0]) >> IB_SL_SHIFT) & IB_SL_MASK); @@ -221,6 +230,27 @@ static inline u16 ib_get_slid(struct ib_header *hdr) return (be16_to_cpu(hdr->lrh[3])); } +static inline u8 ib_get_lver(struct ib_header *hdr) +{ + return (u8)((be16_to_cpu(hdr->lrh[0]) >> IB_LVER_SHIFT) & + IB_LVER_MASK); +} + +static inline u16 ib_get_len(struct ib_header *hdr) +{ + return (u16)(be16_to_cpu(hdr->lrh[2])); +} + +static inline u32 ib_get_qkey(struct ib_other_headers *ohdr) +{ + return be32_to_cpu(ohdr->u.ud.deth[0]); +} + +static inline u32 ib_get_sqpn(struct ib_other_headers *ohdr) +{ + return ((be32_to_cpu(ohdr->u.ud.deth[1])) & IB_QPN_MASK); +} + /* * BTH */ @@ -229,6 +259,14 @@ static inline u16 ib_get_slid(struct ib_header *hdr) #define IB_BTH_PAD_MASK 3 #define IB_BTH_PKEY_MASK 0xffff #define IB_BTH_PAD_SHIFT 20 +#define IB_BTH_A_MASK 1 +#define IB_BTH_A_SHIFT 31 +#define IB_BTH_M_MASK 1 +#define IB_BTH_M_SHIFT 22 +#define IB_BTH_SE_MASK 1 +#define IB_BTH_SE_SHIFT 23 +#define IB_BTH_TVER_MASK 0xf +#define IB_BTH_TVER_SHIFT 16 static inline u8 ib_bth_get_pad(struct ib_other_headers *ohdr) { @@ -247,4 +285,50 @@ static inline u8 ib_bth_get_opcode(struct ib_other_headers *ohdr) IB_BTH_OPCODE_MASK); } +static inline u8 ib_bth_get_ackreq(struct ib_other_headers *ohdr) +{ + return (u8)((be32_to_cpu(ohdr->bth[2]) >> IB_BTH_A_SHIFT) & + IB_BTH_A_MASK); +} + +static inline u8 ib_bth_get_migreq(struct ib_other_headers *ohdr) +{ + return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_M_SHIFT) & + IB_BTH_M_MASK); +} + +static inline u8 ib_bth_get_se(struct ib_other_headers *ohdr) +{ + return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_SE_SHIFT) & + IB_BTH_SE_MASK); +} + +static inline u32 ib_bth_get_psn(struct ib_other_headers *ohdr) +{ + return (u32)(be32_to_cpu(ohdr->bth[2])); +} + +static inline u32 ib_bth_get_qpn(struct ib_other_headers *ohdr) +{ + return (u32)((be32_to_cpu(ohdr->bth[1])) & IB_QPN_MASK); +} + +static inline u8 ib_bth_get_becn(struct ib_other_headers *ohdr) +{ + return (u8)((be32_to_cpu(ohdr->bth[1]) >> IB_BECN_SHIFT) & + IB_BECN_MASK); +} + +static inline u8 ib_bth_get_fecn(struct ib_other_headers *ohdr) +{ + return (u8)((be32_to_cpu(ohdr->bth[1]) >> IB_FECN_SHIFT) & + IB_FECN_MASK); +} + +static inline u8 ib_bth_get_tver(struct ib_other_headers *ohdr) +{ + return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_TVER_SHIFT) & + IB_BTH_TVER_MASK); +} + #endif /* IB_HDRS_H */ |