From: Don Hiatt <don.hiatt@intel.com>
Date: Fri, 4 Aug 2017 13:54:04 -0700
Subject: IB/hfi1: Add support to send 16B bypass packets
Patch-mainline: v4.14-rc1
Git-commit: 30e07416cf48801f127019c1dfece8039f1da8e2
References: bsc#1060463 FATE#323043
We introduce struct hfi1_opa_header as a union
of ib (9B) and 16B headers.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/hfi1/rc.c | 33 +++++++++++++++++-------------
drivers/infiniband/hw/hfi1/ruc.c | 17 ++++++++-------
drivers/infiniband/hw/hfi1/trace_ibhdrs.h | 19 +++++++++--------
drivers/infiniband/hw/hfi1/uc.c | 4 +--
drivers/infiniband/hw/hfi1/ud.c | 25 +++++++++++-----------
drivers/infiniband/hw/hfi1/verbs.c | 24 +++++++++++++++++++--
drivers/infiniband/hw/hfi1/verbs.h | 22 +++++++++-----------
7 files changed, 84 insertions(+), 60 deletions(-)
--- a/drivers/infiniband/hw/hfi1/rc.c
+++ b/drivers/infiniband/hw/hfi1/rc.c
@@ -273,9 +273,9 @@ int hfi1_make_rc_req(struct rvt_qp *qp,
if (IS_ERR(ps->s_txreq))
goto bail_no_tx;
- ohdr = &ps->s_txreq->phdr.hdr.u.oth;
+ ohdr = &ps->s_txreq->phdr.hdr.ibh.u.oth;
if (rdma_ah_get_ah_flags(&qp->remote_ah_attr) & IB_AH_GRH)
- ohdr = &ps->s_txreq->phdr.hdr.u.l.oth;
+ ohdr = &ps->s_txreq->phdr.hdr.ibh.u.l.oth;
/* Sending responses has higher priority over sending requests. */
if ((qp->s_flags & RVT_S_RESP_PENDING) &&
@@ -724,7 +724,8 @@ void hfi1_send_rc_ack(struct hfi1_ctxtda
u32 vl, plen;
struct send_context *sc;
struct pio_buf *pbuf;
- struct ib_header hdr;
+ struct hfi1_opa_header opah;
+ struct ib_header *hdr;
struct ib_other_headers *ohdr;
unsigned long flags;
@@ -741,16 +742,19 @@ void hfi1_send_rc_ack(struct hfi1_ctxtda
goto queue_ack;
/* Construct the header */
+ opah.hdr_type = 0;
+ hdr = &opah.ibh;
+
/* header size in 32-bit words LRH+BTH+AETH = (8+12+4)/4 */
hwords = 6;
if (unlikely(rdma_ah_get_ah_flags(&qp->remote_ah_attr) & IB_AH_GRH)) {
- hwords += hfi1_make_grh(ibp, &hdr.u.l.grh,
+ hwords += hfi1_make_grh(ibp, &hdr->u.l.grh,
rdma_ah_read_grh(&qp->remote_ah_attr),
hwords, 0);
- ohdr = &hdr.u.l.oth;
+ ohdr = &hdr->u.l.oth;
lrh0 = HFI1_LRH_GRH;
} else {
- ohdr = &hdr.u.oth;
+ ohdr = &hdr->u.oth;
lrh0 = HFI1_LRH_BTH;
}
/* read pkey_index w/o lock (its atomic) */
@@ -768,11 +772,11 @@ void hfi1_send_rc_ack(struct hfi1_ctxtda
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);
- hdr.lrh[1] = cpu_to_be16(rdma_ah_get_dlid(&qp->remote_ah_attr));
- hdr.lrh[2] = cpu_to_be16(hwords + SIZE_OF_CRC);
- hdr.lrh[3] = cpu_to_be16(ppd->lid |
- rdma_ah_get_path_bits(&qp->remote_ah_attr));
+ hdr->lrh[0] = cpu_to_be16(lrh0);
+ hdr->lrh[1] = cpu_to_be16(rdma_ah_get_dlid(&qp->remote_ah_attr));
+ hdr->lrh[2] = cpu_to_be16(hwords + SIZE_OF_CRC);
+ hdr->lrh[3] = cpu_to_be16(ppd->lid |
+ rdma_ah_get_path_bits(&qp->remote_ah_attr));
ohdr->bth[0] = cpu_to_be32(bth0);
ohdr->bth[1] = cpu_to_be32(qp->remote_qpn);
ohdr->bth[1] |= cpu_to_be32((!!is_fecn) << IB_BECN_SHIFT);
@@ -799,10 +803,10 @@ void hfi1_send_rc_ack(struct hfi1_ctxtda
}
trace_ack_output_ibhdr(dd_from_ibdev(qp->ibqp.device),
- &hdr, ib_is_sc5(sc5));
+ &opah, ib_is_sc5(sc5));
/* write the pbc and data */
- ppd->dd->pio_inline_send(ppd->dd, pbuf, pbc, &hdr, hwords);
+ ppd->dd->pio_inline_send(ppd->dd, pbuf, pbc, hdr, hwords);
return;
@@ -985,9 +989,10 @@ static void reset_sending_psn(struct rvt
/*
* This should be called with the QP s_lock held and interrupts disabled.
*/
-void hfi1_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr)
+void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_opa_header *opah)
{
struct ib_other_headers *ohdr;
+ struct ib_header *hdr = &opah->ibh;
struct rvt_swqe *wqe;
u32 opcode;
u32 psn;
--- a/drivers/infiniband/hw/hfi1/ruc.c
+++ b/drivers/infiniband/hw/hfi1/ruc.c
@@ -668,7 +668,8 @@ u32 hfi1_make_grh(struct hfi1_ibport *ib
return sizeof(struct ib_grh) / sizeof(u32);
}
-#define BTH2_OFFSET (offsetof(struct hfi1_sdma_header, hdr.u.oth.bth[2]) / 4)
+#define BTH2_OFFSET (offsetof(struct hfi1_sdma_header, \
+ hdr.ibh.u.oth.bth[2]) / 4)
/**
* build_ahg - create ahg in s_ahg
@@ -743,8 +744,8 @@ void hfi1_make_ruc_header(struct rvt_qp
if (unlikely(rdma_ah_get_ah_flags(&qp->remote_ah_attr) & IB_AH_GRH)) {
qp->s_hdrwords +=
hfi1_make_grh(ibp,
- &ps->s_txreq->phdr.hdr.u.l.grh,
- rdma_ah_read_grh(&qp->remote_ah_attr),
+ &ps->s_txreq->phdr.hdr.ibh.u.l.grh,
+ &qp->remote_ah_attr.grh,
qp->s_hdrwords, nwords);
lrh0 = HFI1_LRH_GRH;
middle = 0;
@@ -773,14 +774,14 @@ void hfi1_make_ruc_header(struct rvt_qp
build_ahg(qp, bth2);
else
qp->s_flags &= ~RVT_S_AHG_VALID;
- ps->s_txreq->phdr.hdr.lrh[0] = cpu_to_be16(lrh0);
- ps->s_txreq->phdr.hdr.lrh[1] =
+ ps->s_txreq->phdr.hdr.ibh.lrh[0] = cpu_to_be16(lrh0);
+ ps->s_txreq->phdr.hdr.ibh.lrh[1] =
cpu_to_be16(rdma_ah_get_dlid(&qp->remote_ah_attr));
- ps->s_txreq->phdr.hdr.lrh[2] =
+ ps->s_txreq->phdr.hdr.ibh.lrh[2] =
cpu_to_be16(qp->s_hdrwords + nwords + SIZE_OF_CRC);
- ps->s_txreq->phdr.hdr.lrh[3] =
+ ps->s_txreq->phdr.hdr.ibh.lrh[3] =
cpu_to_be16(ppd_from_ibp(ibp)->lid |
- rdma_ah_get_path_bits(&qp->remote_ah_attr));
+ rdma_ah_get_path_bits(&qp->remote_ah_attr));
bth0 |= hfi1_get_pkey(ibp, qp->s_pkey_index);
bth0 |= extra_bytes << 20;
ohdr->bth[0] = cpu_to_be32(bth0);
--- a/drivers/infiniband/hw/hfi1/trace_ibhdrs.h
+++ b/drivers/infiniband/hw/hfi1/trace_ibhdrs.h
@@ -213,9 +213,9 @@ DEFINE_EVENT(hfi1_input_ibhdr_template,
DECLARE_EVENT_CLASS(hfi1_output_ibhdr_template,
TP_PROTO(struct hfi1_devdata *dd,
- struct ib_header *hdr,
+ struct hfi1_opa_header *opah,
bool sc5),
- TP_ARGS(dd, hdr, sc5),
+ TP_ARGS(dd, opah, sc5),
TP_STRUCT__entry(
DD_DEV_ENTRY(dd)
__field(u8, lnh)
@@ -238,10 +238,11 @@ DECLARE_EVENT_CLASS(hfi1_output_ibhdr_te
__field(u32, psn)
/* extended headers */
__dynamic_array(u8, ehdrs,
- hfi1_trace_ib_hdr_len(hdr))
+ hfi1_trace_ib_hdr_len(&opah->ibh))
),
TP_fast_assign(
struct ib_other_headers *ohdr;
+ struct ib_header *hdr = &opah->ibh;
DD_DEV_ASSIGN(dd);
@@ -294,18 +295,18 @@ DECLARE_EVENT_CLASS(hfi1_output_ibhdr_te
DEFINE_EVENT(hfi1_output_ibhdr_template, pio_output_ibhdr,
TP_PROTO(struct hfi1_devdata *dd,
- struct ib_header *hdr, bool sc5),
- TP_ARGS(dd, hdr, sc5));
+ struct hfi1_opa_header *opah, bool sc5),
+ TP_ARGS(dd, opah, sc5));
DEFINE_EVENT(hfi1_output_ibhdr_template, ack_output_ibhdr,
TP_PROTO(struct hfi1_devdata *dd,
- struct ib_header *hdr, bool sc5),
- TP_ARGS(dd, hdr, sc5));
+ struct hfi1_opa_header *opah, bool sc5),
+ TP_ARGS(dd, opah, sc5));
DEFINE_EVENT(hfi1_output_ibhdr_template, sdma_output_ibhdr,
TP_PROTO(struct hfi1_devdata *dd,
- struct ib_header *hdr, bool sc5),
- TP_ARGS(dd, hdr, sc5));
+ struct hfi1_opa_header *opah, bool sc5),
+ TP_ARGS(dd, opah, sc5));
#endif /* __HFI1_TRACE_IBHDRS_H */
--- a/drivers/infiniband/hw/hfi1/uc.c
+++ b/drivers/infiniband/hw/hfi1/uc.c
@@ -93,9 +93,9 @@ int hfi1_make_uc_req(struct rvt_qp *qp,
goto done_free_tx;
}
- ohdr = &ps->s_txreq->phdr.hdr.u.oth;
+ ohdr = &ps->s_txreq->phdr.hdr.ibh.u.oth;
if (rdma_ah_get_ah_flags(&qp->remote_ah_attr) & IB_AH_GRH)
- ohdr = &ps->s_txreq->phdr.hdr.u.l.oth;
+ ohdr = &ps->s_txreq->phdr.hdr.ibh.u.l.oth;
/* Get the next send request. */
wqe = rvt_get_swqe_ptr(qp, qp->s_cur);
--- a/drivers/infiniband/hw/hfi1/ud.c
+++ b/drivers/infiniband/hw/hfi1/ud.c
@@ -357,12 +357,13 @@ int hfi1_make_ud_req(struct rvt_qp *qp,
if (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) {
/* Header size in 32-bit words. */
- qp->s_hdrwords += hfi1_make_grh(ibp,
- &ps->s_txreq->phdr.hdr.u.l.grh,
- rdma_ah_read_grh(ah_attr),
- qp->s_hdrwords, nwords);
+ qp->s_hdrwords +=
+ hfi1_make_grh(ibp,
+ &ps->s_txreq->phdr.hdr.ibh.u.l.grh,
+ rdma_ah_read_grh(ah_attr),
+ qp->s_hdrwords, nwords);
lrh0 = HFI1_LRH_GRH;
- ohdr = &ps->s_txreq->phdr.hdr.u.l.oth;
+ ohdr = &ps->s_txreq->phdr.hdr.ibh.u.l.oth;
/*
* Don't worry about sending to locally attached multicast
* QPs. It is unspecified by the spec. what happens.
@@ -370,7 +371,7 @@ int hfi1_make_ud_req(struct rvt_qp *qp,
} else {
/* Header size in 32-bit words. */
lrh0 = HFI1_LRH_BTH;
- ohdr = &ps->s_txreq->phdr.hdr.u.oth;
+ ohdr = &ps->s_txreq->phdr.hdr.ibh.u.oth;
}
if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) {
qp->s_hdrwords++;
@@ -392,21 +393,21 @@ int hfi1_make_ud_req(struct rvt_qp *qp,
ps->s_txreq->sde = priv->s_sde;
priv->s_sendcontext = qp_to_send_context(qp, priv->s_sc);
ps->s_txreq->psc = priv->s_sendcontext;
- ps->s_txreq->phdr.hdr.lrh[0] = cpu_to_be16(lrh0);
- ps->s_txreq->phdr.hdr.lrh[1] =
+ ps->s_txreq->phdr.hdr.ibh.lrh[0] = cpu_to_be16(lrh0);
+ ps->s_txreq->phdr.hdr.ibh.lrh[1] =
cpu_to_be16(rdma_ah_get_dlid(ah_attr));
- ps->s_txreq->phdr.hdr.lrh[2] =
+ ps->s_txreq->phdr.hdr.ibh.lrh[2] =
cpu_to_be16(qp->s_hdrwords + nwords + SIZE_OF_CRC);
if (rdma_ah_get_dlid(ah_attr) == be16_to_cpu(IB_LID_PERMISSIVE)) {
- ps->s_txreq->phdr.hdr.lrh[3] = IB_LID_PERMISSIVE;
+ ps->s_txreq->phdr.hdr.ibh.lrh[3] = IB_LID_PERMISSIVE;
} else {
lid = ppd->lid;
if (lid) {
lid |= rdma_ah_get_path_bits(ah_attr) &
((1 << ppd->lmc) - 1);
- ps->s_txreq->phdr.hdr.lrh[3] = cpu_to_be16(lid);
+ ps->s_txreq->phdr.hdr.ibh.lrh[3] = cpu_to_be16(lid);
} else {
- ps->s_txreq->phdr.hdr.lrh[3] = IB_LID_PERMISSIVE;
+ ps->s_txreq->phdr.hdr.ibh.lrh[3] = IB_LID_PERMISSIVE;
}
}
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
--- a/drivers/infiniband/hw/hfi1/verbs.c
+++ b/drivers/infiniband/hw/hfi1/verbs.c
@@ -506,6 +506,24 @@ again:
}
}
+static u8 get_opcode(struct hfi1_opa_header *hdr)
+{
+ struct ib_other_headers *ohdr;
+
+ if (hdr->hdr_type) {
+ if (hfi1_16B_get_l4(&hdr->opah) == OPA_16B_L4_IB_LOCAL)
+ ohdr = &hdr->opah.u.oth;
+ else
+ ohdr = &hdr->opah.u.l.oth;
+ } else {
+ if (ib_get_lnh(&hdr->ibh) == HFI1_LRH_BTH)
+ ohdr = &hdr->ibh.u.oth;
+ else
+ ohdr = &hdr->ibh.u.l.oth;
+ }
+ return ib_bth_get_opcode(ohdr);
+}
+
/*
* Make sure the QP is ready and able to accept the given opcode.
*/
@@ -686,7 +704,7 @@ static void verbs_sdma_complete(
if (tx->wqe) {
hfi1_send_complete(qp, tx->wqe, IB_WC_SUCCESS);
} else if (qp->ibqp.qp_type == IB_QPT_RC) {
- struct ib_header *hdr;
+ struct hfi1_opa_header *hdr;
hdr = &tx->phdr.hdr;
hfi1_rc_send_complete(qp, hdr);
@@ -1175,7 +1193,7 @@ static inline send_routine get_send_rout
{
struct hfi1_devdata *dd = dd_from_ibdev(qp->ibqp.device);
struct hfi1_qp_priv *priv = qp->priv;
- struct ib_header *h = &tx->phdr.hdr;
+ struct hfi1_opa_header *h = &tx->phdr.hdr;
if (unlikely(!(dd->flags & HFI1_HAS_SEND_DMA)))
return dd->process_pio_send;
@@ -1221,7 +1239,7 @@ int hfi1_verbs_send(struct rvt_qp *qp, s
int ret;
u8 lnh;
- hdr = &ps->s_txreq->phdr.hdr;
+ hdr = &ps->s_txreq->phdr.hdr.ibh;
/* locate the pkey within the headers */
lnh = ib_get_lnh(hdr);
if (lnh == HFI1_LRH_GRH)
--- a/drivers/infiniband/hw/hfi1/verbs.h
+++ b/drivers/infiniband/hw/hfi1/verbs.h
@@ -115,6 +115,14 @@ struct hfi1_16b_header {
} u;
} __packed;
+struct hfi1_opa_header {
+ union {
+ struct ib_header ibh; /* 9B header */
+ struct hfi1_16b_header opah; /* 16B header */
+ };
+ u8 hdr_type; /* 9B or 16B */
+} __packed;
+
struct hfi1_ahg_info {
u32 ahgdesc[2];
u16 tx_flags;
@@ -124,7 +132,7 @@ struct hfi1_ahg_info {
struct hfi1_sdma_header {
__le64 pbc;
- struct ib_header hdr;
+ struct hfi1_opa_header hdr;
} __packed;
/*
@@ -326,7 +334,7 @@ u8 ah_to_sc(struct ib_device *ibdev, str
struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u16 dlid);
-void hfi1_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr);
+void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_opa_header *opah);
void hfi1_ud_rcv(struct hfi1_packet *packet);
@@ -347,16 +355,6 @@ int hfi1_check_send_wqe(struct rvt_qp *q
extern const u32 rc_only_opcode;
extern const u32 uc_only_opcode;
-static inline u8 get_opcode(struct ib_header *h)
-{
- u16 lnh = be16_to_cpu(h->lrh[0]) & 3;
-
- if (lnh == IB_LNH_IBA_LOCAL)
- return be32_to_cpu(h->u.oth.bth[0]) >> 24;
- else
- return be32_to_cpu(h->u.l.oth.bth[0]) >> 24;
-}
-
int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_packet *packet);
u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr,