IB/ipath: UC RDMA WRITE with IMMEDIATE doesn't send the immediate

This patch fixes a bug in the receive processing for UC RDMA WRITE with
immediate which caused the last packet to be dropped.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/infiniband/hw/ipath/ipath_uc.c b/drivers/infiniband/hw/ipath/ipath_uc.c
index 767beb9..2dd8de2 100644 (file)
--- a/drivers/infiniband/hw/ipath/ipath_uc.c
+++ b/drivers/infiniband/hw/ipath/ipath_uc.c
@@ -464,6 +464,16 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
 
        case OP(RDMA_WRITE_LAST_WITH_IMMEDIATE):
        rdma_last_imm:
+               if (header_in_data) {
+                       wc.imm_data = *(__be32 *) data;
+                       data += sizeof(__be32);
+               } else {
+                       /* Immediate data comes after BTH */
+                       wc.imm_data = ohdr->u.imm_data;
+               }
+               hdrsize += 4;
+               wc.wc_flags = IB_WC_WITH_IMM;
+
                /* Get the number of bytes the message was padded by. */
                pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3;
                /* Check for invalid length. */
@@ -484,16 +494,7 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
                        dev->n_pkt_drops++;
                        goto done;
                }
-               if (header_in_data) {
-                       wc.imm_data = *(__be32 *) data;
-                       data += sizeof(__be32);
-               } else {
-                       /* Immediate data comes after BTH */
-                       wc.imm_data = ohdr->u.imm_data;
-               }
-               hdrsize += 4;
-               wc.wc_flags = IB_WC_WITH_IMM;
-               wc.byte_len = 0;
+               wc.byte_len = qp->r_len;
                goto last_imm;
 
        case OP(RDMA_WRITE_LAST):