IB/hfi1: Handle send with invalidate opcode in the RC recv path

As part of enabling extended memory management support, add the processing
of the RC send with invalidate.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/hfi1/rc.c b/drivers/infiniband/hw/hfi1/rc.c
index bd4baa4..cb474a7 100644 (file)
--- a/drivers/infiniband/hw/hfi1/rc.c
+++ b/drivers/infiniband/hw/hfi1/rc.c
@@ -2098,6 +2098,7 @@ void hfi1_rc_rcv(struct hfi1_packet *packet)
        unsigned long flags;
        int ret, is_fecn = 0;
        int copy_last = 0;
+       u32 rkey;
 
        bth0 = be32_to_cpu(ohdr->bth[0]);
        if (hfi1_ruc_check_hdr(ibp, hdr, rcv_flags & HFI1_HAS_GRH, qp, bth0))
@@ -2137,7 +2138,8 @@ void hfi1_rc_rcv(struct hfi1_packet *packet)
        case OP(SEND_MIDDLE):
                if (opcode == OP(SEND_MIDDLE) ||
                    opcode == OP(SEND_LAST) ||
-                   opcode == OP(SEND_LAST_WITH_IMMEDIATE))
+                   opcode == OP(SEND_LAST_WITH_IMMEDIATE) ||
+                   opcode == OP(SEND_LAST_WITH_INVALIDATE))
                        break;
                goto nack_inv;
 
@@ -2153,6 +2155,7 @@ void hfi1_rc_rcv(struct hfi1_packet *packet)
                if (opcode == OP(SEND_MIDDLE) ||
                    opcode == OP(SEND_LAST) ||
                    opcode == OP(SEND_LAST_WITH_IMMEDIATE) ||
+                   opcode == OP(SEND_LAST_WITH_INVALIDATE) ||
                    opcode == OP(RDMA_WRITE_MIDDLE) ||
                    opcode == OP(RDMA_WRITE_LAST) ||
                    opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE))
@@ -2201,6 +2204,7 @@ send_middle:
 
        case OP(SEND_ONLY):
        case OP(SEND_ONLY_WITH_IMMEDIATE):
+       case OP(SEND_ONLY_WITH_INVALIDATE):
                ret = hfi1_rvt_get_rwqe(qp, 0);
                if (ret < 0)
                        goto nack_op_err;
@@ -2209,12 +2213,22 @@ send_middle:
                qp->r_rcv_len = 0;
                if (opcode == OP(SEND_ONLY))
                        goto no_immediate_data;
+               if (opcode == OP(SEND_ONLY_WITH_INVALIDATE))
+                       goto send_last_inv;
                /* FALLTHROUGH for SEND_ONLY_WITH_IMMEDIATE */
        case OP(SEND_LAST_WITH_IMMEDIATE):
 send_last_imm:
                wc.ex.imm_data = ohdr->u.imm_data;
                wc.wc_flags = IB_WC_WITH_IMM;
                goto send_last;
+       case OP(SEND_LAST_WITH_INVALIDATE):
+send_last_inv:
+               rkey = be32_to_cpu(ohdr->u.ieth);
+               if (rvt_invalidate_rkey(qp, rkey))
+                       goto no_immediate_data;
+               wc.ex.invalidate_rkey = rkey;
+               wc.wc_flags = IB_WC_WITH_INVALIDATE;
+               goto send_last;
        case OP(RDMA_WRITE_LAST):
                copy_last = ibpd_to_rvtpd(qp->ibqp.pd)->user;
                /* fall through */

diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c
index a89055f..84cc09a 100644 (file)
--- a/drivers/infiniband/hw/hfi1/verbs.c
+++ b/drivers/infiniband/hw/hfi1/verbs.c
@@ -378,6 +378,8 @@ static const opcode_handler opcode_handler_tbl[256] = {
        [IB_OPCODE_RC_ATOMIC_ACKNOWLEDGE]             = &hfi1_rc_rcv,
        [IB_OPCODE_RC_COMPARE_SWAP]                   = &hfi1_rc_rcv,
        [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,
        /* UC */
        [IB_OPCODE_UC_SEND_FIRST]                     = &hfi1_uc_rcv,
        [IB_OPCODE_UC_SEND_MIDDLE]                    = &hfi1_uc_rcv,