@@ -1549,25 +1549,32 @@ static int hfi1_setup_bypass_packet(struct hfi1_packet *packet)
return -EINVAL;
}
-void handle_eflags(struct hfi1_packet *packet)
+static void show_eflags_errs(struct hfi1_packet *packet)
{
struct hfi1_ctxtdata *rcd = packet->rcd;
u32 rte = rhf_rcv_type_err(packet->rhf);
+ dd_dev_err(rcd->dd,
+ "receive context %d: rhf 0x%016llx, errs [ %s%s%s%s%s%s%s%s] rte 0x%x\n",
+ rcd->ctxt, packet->rhf,
+ packet->rhf & RHF_K_HDR_LEN_ERR ? "k_hdr_len " : "",
+ packet->rhf & RHF_DC_UNC_ERR ? "dc_unc " : "",
+ packet->rhf & RHF_DC_ERR ? "dc " : "",
+ packet->rhf & RHF_TID_ERR ? "tid " : "",
+ packet->rhf & RHF_LEN_ERR ? "len " : "",
+ packet->rhf & RHF_ECC_ERR ? "ecc " : "",
+ packet->rhf & RHF_VCRC_ERR ? "vcrc " : "",
+ packet->rhf & RHF_ICRC_ERR ? "icrc " : "",
+ rte);
+}
+
+void handle_eflags(struct hfi1_packet *packet)
+{
+ struct hfi1_ctxtdata *rcd = packet->rcd;
+
rcv_hdrerr(rcd, rcd->ppd, packet);
if (rhf_err_flags(packet->rhf))
- dd_dev_err(rcd->dd,
- "receive context %d: rhf 0x%016llx, errs [ %s%s%s%s%s%s%s%s] rte 0x%x\n",
- rcd->ctxt, packet->rhf,
- packet->rhf & RHF_K_HDR_LEN_ERR ? "k_hdr_len " : "",
- packet->rhf & RHF_DC_UNC_ERR ? "dc_unc " : "",
- packet->rhf & RHF_DC_ERR ? "dc " : "",
- packet->rhf & RHF_TID_ERR ? "tid " : "",
- packet->rhf & RHF_LEN_ERR ? "len " : "",
- packet->rhf & RHF_ECC_ERR ? "ecc " : "",
- packet->rhf & RHF_VCRC_ERR ? "vcrc " : "",
- packet->rhf & RHF_ICRC_ERR ? "icrc " : "",
- rte);
+ show_eflags_errs(packet);
}
/*
@@ -1673,11 +1680,14 @@ static int kdeth_process_expected(struct hfi1_packet *packet)
if (unlikely(hfi1_dbg_should_fault_rx(packet)))
return RHF_RCV_CONTINUE;
- if (unlikely(rhf_err_flags(packet->rhf)))
- handle_eflags(packet);
+ if (unlikely(rhf_err_flags(packet->rhf))) {
+ struct hfi1_ctxtdata *rcd = packet->rcd;
- dd_dev_err(packet->rcd->dd,
- "Unhandled expected packet received. Dropping.\n");
+ if (hfi1_handle_kdeth_eflags(rcd, rcd->ppd, packet))
+ return RHF_RCV_CONTINUE;
+ }
+
+ hfi1_kdeth_expected_rcv(packet);
return RHF_RCV_CONTINUE;
}
@@ -1686,11 +1696,17 @@ static int kdeth_process_eager(struct hfi1_packet *packet)
hfi1_setup_9B_packet(packet);
if (unlikely(hfi1_dbg_should_fault_rx(packet)))
return RHF_RCV_CONTINUE;
- if (unlikely(rhf_err_flags(packet->rhf)))
- handle_eflags(packet);
- dd_dev_err(packet->rcd->dd,
- "Unhandled eager packet received. Dropping.\n");
+ trace_hfi1_rcvhdr(packet);
+ if (unlikely(rhf_err_flags(packet->rhf))) {
+ struct hfi1_ctxtdata *rcd = packet->rcd;
+
+ show_eflags_errs(packet);
+ if (hfi1_handle_kdeth_eflags(rcd, rcd->ppd, packet))
+ return RHF_RCV_CONTINUE;
+ }
+
+ hfi1_kdeth_eager_rcv(packet);
return RHF_RCV_CONTINUE;
}
@@ -2097,7 +2097,7 @@ static inline u64 hfi1_pkt_default_send_ctxt_mask(struct hfi1_devdata *dd,
SEND_CTXT_CHECK_ENABLE_DISALLOW_PBC_TEST_SMASK |
#endif
HFI1_PKT_USER_SC_INTEGRITY;
- else
+ else if (ctxt_type != SC_KERNEL)
base_sc_integrity |= HFI1_PKT_KERNEL_SC_INTEGRITY;
/* turn on send-side job key checks if !A0 */
@@ -299,6 +299,21 @@ void hfi1_rc_rcv_tid_rdma_read_resp(struct hfi1_packet *packet)
{
}
+void hfi1_rc_rcv_tid_rdma_resync(struct hfi1_packet *packet)
+{
+}
+
+void hfi1_rc_rcv_tid_rdma_ack(struct hfi1_packet *packet)
+{
+}
+
+bool hfi1_handle_kdeth_eflags(struct hfi1_ctxtdata *rcd,
+ struct hfi1_pportdata *ppd,
+ struct hfi1_packet *packet)
+{
+ return true;
+}
+
/**
* qp_to_rcd - determine the receive context used by a qp
* @qp - the qp
@@ -271,6 +271,14 @@ struct trdma_flow_state {
void hfi1_rc_rcv_tid_rdma_read_resp(struct hfi1_packet *packet);
+void hfi1_rc_rcv_tid_rdma_resync(struct hfi1_packet *packet);
+
+void hfi1_rc_rcv_tid_rdma_ack(struct hfi1_packet *packet);
+
+bool hfi1_handle_kdeth_eflags(struct hfi1_ctxtdata *rcd,
+ struct hfi1_pportdata *ppd,
+ struct hfi1_packet *packet);
+
int hfi1_qp_priv_init(struct rvt_dev_info *rdi, struct rvt_qp *qp,
struct ib_qp_init_attr *init_attr);
void hfi1_qp_priv_tid_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);
@@ -47,6 +47,7 @@
#include <rdma/ib_mad.h>
#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_hdrs.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/utsname.h>
@@ -349,6 +350,14 @@ static inline bool wss_exceeds_threshold(void)
[IB_OPCODE_RC_FETCH_ADD] = 12 + 8 + 28,
[IB_OPCODE_RC_SEND_LAST_WITH_INVALIDATE] = 12 + 8 + 4,
[IB_OPCODE_RC_SEND_ONLY_WITH_INVALIDATE] = 12 + 8 + 4,
+ [IB_OPCODE_TID_RDMA_WRITE_REQ] = 12 + 8 + 36,
+ [IB_OPCODE_TID_RDMA_WRITE_RESP] = 12 + 8 + 36,
+ [IB_OPCODE_TID_RDMA_WRITE_DATA] = 12 + 8 + 36,
+ [IB_OPCODE_TID_RDMA_WRITE_DATA_LAST] = 12 + 8 + 36,
+ [IB_OPCODE_TID_RDMA_READ_REQ] = 12 + 8 + 36,
+ [IB_OPCODE_TID_RDMA_READ_RESP] = 12 + 8 + 36,
+ [IB_OPCODE_TID_RDMA_ACK] = 12 + 8 + 36,
+ [IB_OPCODE_TID_RDMA_RESYNC] = 12 + 8 + 36,
/* UC */
[IB_OPCODE_UC_SEND_FIRST] = 12 + 8,
[IB_OPCODE_UC_SEND_MIDDLE] = 12 + 8,
@@ -392,6 +401,21 @@ static inline bool wss_exceeds_threshold(void)
[IB_OPCODE_RC_FETCH_ADD] = &hfi1_rc_rcv,
[IB_OPCODE_RC_SEND_LAST_WITH_INVALIDATE] = &hfi1_rc_rcv,
[IB_OPCODE_RC_SEND_ONLY_WITH_INVALIDATE] = &hfi1_rc_rcv,
+
+ /*
+ * TID RDMA has separate handlers for different opcodes.
+ * However, TID RDMA opcodes can be handled by a single handler
+ * just like all the RC opcodes.
+ */
+ [IB_OPCODE_TID_RDMA_WRITE_REQ] = &hfi1_rc_rcv_tid_rdma_write_req,
+ [IB_OPCODE_TID_RDMA_WRITE_RESP] = &hfi1_rc_rcv_tid_rdma_write_resp,
+ [IB_OPCODE_TID_RDMA_WRITE_DATA] = &hfi1_rc_rcv_tid_rdma_write_data,
+ [IB_OPCODE_TID_RDMA_WRITE_DATA_LAST] = &hfi1_rc_rcv_tid_rdma_write_data,
+ [IB_OPCODE_TID_RDMA_READ_REQ] = &hfi1_rc_rcv_tid_rdma_read_req,
+ [IB_OPCODE_TID_RDMA_READ_RESP] = &hfi1_rc_rcv_tid_rdma_read_resp,
+ [IB_OPCODE_TID_RDMA_RESYNC] = &hfi1_rc_rcv_tid_rdma_resync,
+ [IB_OPCODE_TID_RDMA_ACK] = &hfi1_rc_rcv_tid_rdma_ack,
+
/* UC */
[IB_OPCODE_UC_SEND_FIRST] = &hfi1_uc_rcv,
[IB_OPCODE_UC_SEND_MIDDLE] = &hfi1_uc_rcv,
@@ -556,6 +580,124 @@ static u64 hfi1_fault_tx(struct rvt_qp *qp, u8 opcode, u64 pbc)
return pbc;
}
+static opcode_handler tid_qp_ok(int opcode, struct hfi1_packet *packet)
+{
+ if (packet->qp->ibqp.qp_type != IB_QPT_RC ||
+ !(ib_rvt_state_ops[packet->qp->state] & RVT_PROCESS_RECV_OK))
+ return NULL;
+ if ((opcode & RVT_OPCODE_QP_MASK) == IB_OPCODE_TID_RDMA)
+ return opcode_handler_tbl[opcode];
+ return NULL;
+}
+
+void hfi1_kdeth_eager_rcv(struct hfi1_packet *packet)
+{
+ struct hfi1_ctxtdata *rcd = packet->rcd;
+ struct ib_header *hdr = packet->hdr;
+ u32 tlen = packet->tlen;
+ struct hfi1_pportdata *ppd = rcd->ppd;
+ struct hfi1_ibport *ibp = &ppd->ibport_data;
+ struct rvt_dev_info *rdi = &ppd->dd->verbs_dev.rdi;
+ opcode_handler opcode_handler;
+ unsigned long flags;
+ u32 qp_num;
+ int lnh;
+ u8 opcode;
+
+ /* DW == LRH (2) + BTH (3) + KDETH (9) + CRC (1) */
+ if (unlikely(tlen < 15 * sizeof(u32)))
+ goto drop;
+
+ lnh = be16_to_cpu(hdr->lrh[0]) & 3;
+ if (lnh != HFI1_LRH_BTH)
+ goto drop;
+
+ packet->ohdr = &hdr->u.oth;
+ trace_input_ibhdr(rcd->dd, packet, !!(rhf_dc_info(packet->rhf)));
+
+ opcode = (be32_to_cpu(packet->ohdr->bth[0]) >> 24);
+ inc_opstats(tlen, &rcd->opstats->stats[opcode]);
+
+ /* verbs_qp can be picked up from any tid_rdma header struct */
+ qp_num = be32_to_cpu(packet->ohdr->u.tid_rdma.w_data.verbs_qp) &
+ RVT_QPN_MASK;
+
+ rcu_read_lock();
+ packet->qp = rvt_lookup_qpn(rdi, &ibp->rvp, qp_num);
+ if (!packet->qp)
+ goto drop_rcu;
+ spin_lock_irqsave(&packet->qp->r_lock, flags);
+ opcode_handler = tid_qp_ok(opcode, packet);
+ if (likely(opcode_handler))
+ opcode_handler(packet);
+ else
+ goto drop_unlock;
+ spin_unlock_irqrestore(&packet->qp->r_lock, flags);
+ rcu_read_unlock();
+
+ return;
+drop_unlock:
+ spin_unlock_irqrestore(&packet->qp->r_lock, flags);
+drop_rcu:
+ rcu_read_unlock();
+drop:
+ ibp->rvp.n_pkt_drops++;
+}
+
+void hfi1_kdeth_expected_rcv(struct hfi1_packet *packet)
+{
+ struct hfi1_ctxtdata *rcd = packet->rcd;
+ struct ib_header *hdr = packet->hdr;
+ u32 tlen = packet->tlen;
+ struct hfi1_pportdata *ppd = rcd->ppd;
+ struct hfi1_ibport *ibp = &ppd->ibport_data;
+ struct rvt_dev_info *rdi = &ppd->dd->verbs_dev.rdi;
+ opcode_handler opcode_handler;
+ unsigned long flags;
+ u32 qp_num;
+ int lnh;
+ u8 opcode;
+
+ /* DW == LRH (2) + BTH (3) + KDETH (9) + CRC (1) */
+ if (unlikely(tlen < 15 * sizeof(u32)))
+ goto drop;
+
+ lnh = be16_to_cpu(hdr->lrh[0]) & 3;
+ if (lnh != HFI1_LRH_BTH)
+ goto drop;
+
+ packet->ohdr = &hdr->u.oth;
+ trace_input_ibhdr(rcd->dd, packet, !!(rhf_dc_info(packet->rhf)));
+
+ opcode = (be32_to_cpu(packet->ohdr->bth[0]) >> 24);
+ inc_opstats(tlen, &rcd->opstats->stats[opcode]);
+
+ /* verbs_qp can be picked up from any tid_rdma header struct */
+ qp_num = be32_to_cpu(packet->ohdr->u.tid_rdma.w_data.verbs_qp) &
+ RVT_QPN_MASK;
+
+ rcu_read_lock();
+ packet->qp = rvt_lookup_qpn(rdi, &ibp->rvp, qp_num);
+ if (!packet->qp)
+ goto drop_rcu;
+ spin_lock_irqsave(&packet->qp->r_lock, flags);
+ opcode_handler = tid_qp_ok(opcode, packet);
+ if (likely(opcode_handler))
+ opcode_handler(packet);
+ else
+ goto drop_unlock;
+ spin_unlock_irqrestore(&packet->qp->r_lock, flags);
+ rcu_read_unlock();
+
+ return;
+drop_unlock:
+ spin_unlock_irqrestore(&packet->qp->r_lock, flags);
+drop_rcu:
+ rcu_read_unlock();
+drop:
+ ibp->rvp.n_pkt_drops++;
+}
+
static int hfi1_do_pkey_check(struct hfi1_packet *packet)
{
struct hfi1_ctxtdata *rcd = packet->rcd;
@@ -408,6 +408,10 @@ void hfi1_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
void hfi1_unregister_ib_device(struct hfi1_devdata *);
+void hfi1_kdeth_eager_rcv(struct hfi1_packet *packet);
+
+void hfi1_kdeth_expected_rcv(struct hfi1_packet *packet);
+
void hfi1_ib_rcv(struct hfi1_packet *packet);
void hfi1_16B_rcv(struct hfi1_packet *packet);
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2016 Intel Corporation.
+ * Copyright(c) 2016 - 2018 Intel Corporation.
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
@@ -100,6 +100,8 @@ struct ib_atomic_eth {
__be64 compare_data; /* potentially unaligned */
} __packed;
+#include <rdma/tid_rdma_defs.h>
+
union ib_ehdrs {
struct {
__be32 deth[2];
@@ -117,6 +119,16 @@ struct ib_atomic_eth {
__be32 aeth;
__be32 ieth;
struct ib_atomic_eth atomic_eth;
+ /* TID RDMA headers */
+ union {
+ struct tid_rdma_write_req w_req;
+ struct tid_rdma_write_resp w_rsp;
+ struct tid_rdma_write_data w_data;
+ struct tid_rdma_read_req r_req;
+ struct tid_rdma_read_resp r_rsp;
+ struct tid_rdma_resync resync;
+ struct tid_rdma_ack ack;
+ } tid_rdma;
} __packed;
struct ib_other_headers {