diff options
author | Don Hiatt <don.hiatt@intel.com> | 2018-05-15 18:28:15 -0700 |
---|---|---|
committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-05-24 09:39:25 -0600 |
commit | 81cd3891f021b88319f7243715c30945aaabe9ea (patch) | |
tree | f2294c283df333a48f45285928d779528b85c8f2 /drivers/infiniband/hw/hfi1/verbs.c | |
parent | IB/hfi1: Define 16B Management Packets (diff) | |
download | linux-dev-81cd3891f021b88319f7243715c30945aaabe9ea.tar.xz linux-dev-81cd3891f021b88319f7243715c30945aaabe9ea.zip |
IB/hfi1: Add support for 16B Management Packets
16B Management Packets (L4=0x08) replace the BTH and DETH
of normal MAD packet packets with a header containing the
the source and destination queue pair numbers; fields that
were originally retrieved from the BTH/DETH are now populated
from this header as well as from the 16B LRH (e.g. pkey).
16B Management Packets are used as an optimized management
format on 16B fabrics.
These management packets have an opcode of IB_OPCODE_UD_SEND_ONLY,
a fixed 3Byte pad, and a header length of 24Bytes.
The decision as to when we send a management packet is based
upon either the source or destination queue pair number being
0 or 1.
Reviewed-by: Ira Weiny <ira.weiny@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 'drivers/infiniband/hw/hfi1/verbs.c')
-rw-r--r-- | drivers/infiniband/hw/hfi1/verbs.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c index fc2e44cde161..08991874c0e2 100644 --- a/drivers/infiniband/hw/hfi1/verbs.c +++ b/drivers/infiniband/hw/hfi1/verbs.c @@ -617,7 +617,12 @@ static inline void hfi1_handle_packet(struct hfi1_packet *packet, wake_up(&mcast->wait); } else { /* Get the destination QP number. */ - qp_num = ib_bth_get_qpn(packet->ohdr); + if (packet->etype == RHF_RCV_TYPE_BYPASS && + hfi1_16B_get_l4(packet->hdr) == OPA_16B_L4_FM) + qp_num = hfi1_16B_get_dest_qpn(packet->mgmt); + else + qp_num = ib_bth_get_qpn(packet->ohdr); + rcu_read_lock(); packet->qp = rvt_lookup_qpn(rdi, &ibp->rvp, qp_num); if (!packet->qp) @@ -1308,21 +1313,23 @@ int hfi1_verbs_send(struct rvt_qp *qp, struct hfi1_pkt_state *ps) { struct hfi1_devdata *dd = dd_from_ibdev(qp->ibqp.device); struct hfi1_qp_priv *priv = qp->priv; - struct ib_other_headers *ohdr; + struct ib_other_headers *ohdr = NULL; send_routine sr; int ret; u16 pkey; u32 slid; + u8 l4 = 0; /* locate the pkey within the headers */ if (ps->s_txreq->phdr.hdr.hdr_type) { struct hfi1_16b_header *hdr = &ps->s_txreq->phdr.hdr.opah; - u8 l4 = hfi1_16B_get_l4(hdr); - if (l4 == OPA_16B_L4_IB_GLOBAL) - ohdr = &hdr->u.l.oth; - else + l4 = hfi1_16B_get_l4(hdr); + if (l4 == OPA_16B_L4_IB_LOCAL) ohdr = &hdr->u.oth; + else if (l4 == OPA_16B_L4_IB_GLOBAL) + ohdr = &hdr->u.l.oth; + slid = hfi1_16B_get_slid(hdr); pkey = hfi1_16B_get_pkey(hdr); } else { @@ -1337,7 +1344,11 @@ int hfi1_verbs_send(struct rvt_qp *qp, struct hfi1_pkt_state *ps) pkey = ib_bth_get_pkey(ohdr); } - ps->opcode = ib_bth_get_opcode(ohdr); + if (likely(l4 != OPA_16B_L4_FM)) + ps->opcode = ib_bth_get_opcode(ohdr); + else + ps->opcode = IB_OPCODE_UD_SEND_ONLY; + sr = get_send_routine(qp, ps); ret = egress_pkey_check(dd->pport, slid, pkey, priv->s_sc, qp->s_pkey_index); |