From 7dafbab3753fcf59bc81748e5b2c5bf04e1c62c7 Mon Sep 17 00:00:00 2001 From: Don Hiatt Date: Fri, 12 May 2017 09:19:55 -0700 Subject: [PATCH] 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 Reviewed-by: Dasaratharaman Chandramouli Reviewed-by: Dennis Dalessandro Signed-off-by: Don Hiatt Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford --- drivers/infiniband/hw/hfi1/driver.c | 6 +-- drivers/infiniband/hw/hfi1/rc.c | 8 +-- drivers/infiniband/hw/hfi1/uc.c | 2 +- drivers/infiniband/hw/hfi1/ud.c | 6 +-- drivers/infiniband/hw/hfi1/verbs.c | 6 +-- include/rdma/ib_hdrs.h | 84 +++++++++++++++++++++++++++++ include/rdma/ib_verbs.h | 2 + include/rdma/rdmavt_qp.h | 2 +- 8 files changed, 101 insertions(+), 15 deletions(-) diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c index a50870e455a3..0583479f2576 100644 --- a/drivers/infiniband/hw/hfi1/driver.c +++ b/drivers/infiniband/hw/hfi1/driver.c @@ -286,7 +286,7 @@ static void rcv_hdrerr(struct hfi1_ctxtdata *rcd, struct hfi1_pportdata *ppd, goto drop; } /* Get the destination QP number. */ - qp_num = be32_to_cpu(ohdr->bth[1]) & RVT_QPN_MASK; + qp_num = ib_bth_get_qpn(ohdr); if (lid < be16_to_cpu(IB_MULTICAST_LID_BASE)) { struct rvt_qp *qp; unsigned long flags; @@ -438,7 +438,7 @@ void hfi1_process_ecn_slowpath(struct rvt_qp *qp, struct hfi1_packet *pkt, case IB_QPT_GSI: case IB_QPT_UD: rlid = ib_get_slid(hdr); - rqpn = be32_to_cpu(ohdr->u.ud.deth[1]) & RVT_QPN_MASK; + rqpn = ib_get_sqpn(ohdr); svc_type = IB_CC_SVCTYPE_UD; is_mcast = (dlid > be16_to_cpu(IB_MULTICAST_LID_BASE)) && (dlid != be16_to_cpu(IB_LID_PERMISSIVE)); @@ -461,7 +461,7 @@ void hfi1_process_ecn_slowpath(struct rvt_qp *qp, struct hfi1_packet *pkt, bth1 = be32_to_cpu(ohdr->bth[1]); if (do_cnp && (bth1 & IB_FECN_SMASK)) { - u16 pkey = (u16)be32_to_cpu(ohdr->bth[0]); + u16 pkey = ib_bth_get_pkey(ohdr); return_cnp(ibp, qp, rqpn, pkey, dlid, rlid, sc, grh); } diff --git a/drivers/infiniband/hw/hfi1/rc.c b/drivers/infiniband/hw/hfi1/rc.c index 1080778a1f7c..66e6843aab48 100644 --- a/drivers/infiniband/hw/hfi1/rc.c +++ b/drivers/infiniband/hw/hfi1/rc.c @@ -765,7 +765,7 @@ void hfi1_send_rc_ack(struct hfi1_ctxtdata *rcd, struct rvt_qp *qp, ohdr->u.aeth = rvt_compute_aeth(qp); sc5 = ibp->sl_to_sc[rdma_ah_get_sl(&qp->remote_ah_attr)]; /* set PBC_DC_INFO bit (aka SC[4]) in pbc_flags */ - pbc_flags |= ((!!(sc5 & 0x10)) << PBC_DC_INFO_SHIFT); + pbc_flags |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT); lrh0 |= (sc5 & 0xf) << 12 | (rdma_ah_get_sl(&qp->remote_ah_attr) & 0xf) << 4; hdr.lrh[0] = cpu_to_be16(lrh0); @@ -1009,7 +1009,7 @@ void hfi1_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr) return; } - psn = be32_to_cpu(ohdr->bth[2]); + psn = ib_bth_get_psn(ohdr); reset_sending_psn(qp, psn); /* @@ -1943,7 +1943,7 @@ void hfi1_rc_rcv(struct hfi1_packet *packet) is_fecn = process_ecn(qp, packet, false); - psn = be32_to_cpu(ohdr->bth[2]); + psn = ib_bth_get_psn(ohdr); opcode = ib_bth_get_opcode(ohdr); /* @@ -2388,7 +2388,7 @@ void hfi1_rc_hdrerr( if (hfi1_ruc_check_hdr(ibp, hdr, has_grh, qp, bth0)) return; - psn = be32_to_cpu(ohdr->bth[2]); + psn = ib_bth_get_psn(ohdr); opcode = ib_bth_get_opcode(ohdr); /* Only deal with RDMA Writes for now */ diff --git a/drivers/infiniband/hw/hfi1/uc.c b/drivers/infiniband/hw/hfi1/uc.c index 5da1e4546543..2a5650f8aee0 100644 --- a/drivers/infiniband/hw/hfi1/uc.c +++ b/drivers/infiniband/hw/hfi1/uc.c @@ -319,7 +319,7 @@ void hfi1_uc_rcv(struct hfi1_packet *packet) process_ecn(qp, packet, true); - psn = be32_to_cpu(ohdr->bth[2]); + psn = ib_bth_get_psn(ohdr); opcode = ib_bth_get_opcode(ohdr); /* Compare the PSN verses the expected PSN. */ diff --git a/drivers/infiniband/hw/hfi1/ud.c b/drivers/infiniband/hw/hfi1/ud.c index 6a4e95cefae5..49fe179ad3ae 100644 --- a/drivers/infiniband/hw/hfi1/ud.c +++ b/drivers/infiniband/hw/hfi1/ud.c @@ -549,7 +549,7 @@ void return_cnp(struct hfi1_ibport *ibp, struct rvt_qp *qp, u32 remote_qpn, hdr.lrh[3] = cpu_to_be16(slid); plen = 2 /* PBC */ + hwords; - pbc_flags |= (!!(sc5 & 0x10)) << PBC_DC_INFO_SHIFT; + pbc_flags |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT); vl = sc_to_vlt(ppd->dd, sc5); pbc = create_pbc(ppd, pbc_flags, qp->srate_mbps, vl, plen); if (ctxt) { @@ -689,8 +689,8 @@ void hfi1_ud_rcv(struct hfi1_packet *packet) u16 slid; u8 extra_bytes; - qkey = be32_to_cpu(ohdr->u.ud.deth[0]); - src_qp = be32_to_cpu(ohdr->u.ud.deth[1]) & RVT_QPN_MASK; + qkey = ib_get_qkey(ohdr); + src_qp = ib_get_sqpn(ohdr); dlid = ib_get_dlid(hdr); bth1 = be32_to_cpu(ohdr->bth[1]); slid = ib_get_slid(hdr); diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c index 90e7b77d68e8..128d2917a2d9 100644 --- a/drivers/infiniband/hw/hfi1/verbs.c +++ b/drivers/infiniband/hw/hfi1/verbs.c @@ -595,7 +595,7 @@ void hfi1_ib_rcv(struct hfi1_packet *packet) inc_opstats(tlen, &rcd->opstats->stats[opcode]); /* Get the destination QP number. */ - qp_num = be32_to_cpu(packet->ohdr->bth[1]) & RVT_QPN_MASK; + qp_num = ib_bth_get_qpn(packet->ohdr); lid = ib_get_dlid(hdr); if (unlikely((lid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) && (lid != be16_to_cpu(IB_LID_PERMISSIVE)))) { @@ -863,7 +863,7 @@ int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps, /* No vl15 here */ /* set PBC_DC_INFO bit (aka SC[4]) in pbc_flags */ - pbc |= (!!(sc5 & 0x10)) << PBC_DC_INFO_SHIFT; + pbc |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT); if (unlikely(hfi1_dbg_fault_opcode(qp, opcode, false))) pbc = hfi1_fault_tx(qp, opcode, pbc); @@ -999,7 +999,7 @@ int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps, u8 opcode = get_opcode(&tx->phdr.hdr); /* set PBC_DC_INFO bit (aka SC[4]) in pbc_flags */ - pbc |= (!!(sc5 & 0x10)) << PBC_DC_INFO_SHIFT; + pbc |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT); if (unlikely(hfi1_dbg_fault_opcode(qp, opcode, false))) pbc = hfi1_fault_tx(qp, opcode, pbc); pbc = create_pbc(ppd, pbc, qp->srate_mbps, vl, plen); 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 */ diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index ba8314ec5768..8f1ce4e27bbd 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -664,6 +664,8 @@ union rdma_network_hdr { }; }; +#define IB_QPN_MASK 0xFFFFFF + enum { IB_MULTICAST_QPN = 0xffffff }; diff --git a/include/rdma/rdmavt_qp.h b/include/rdma/rdmavt_qp.h index be6472e5b06b..13f43b3527a8 100644 --- a/include/rdma/rdmavt_qp.h +++ b/include/rdma/rdmavt_qp.h @@ -396,7 +396,7 @@ struct rvt_srq { #define RVT_QPNMAP_ENTRIES (RVT_QPN_MAX / PAGE_SIZE / BITS_PER_BYTE) #define RVT_BITS_PER_PAGE (PAGE_SIZE * BITS_PER_BYTE) #define RVT_BITS_PER_PAGE_MASK (RVT_BITS_PER_PAGE - 1) -#define RVT_QPN_MASK 0xFFFFFF +#define RVT_QPN_MASK IB_QPN_MASK /* * QPN-map pages start out as NULL, they get allocated upon -- 2.20.1