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>

1 files changed, 11 insertions, 10 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_uc.c b/drivers/infiniband/hw/ipath/ipath_uc.c
index 767beb903c25..2dd8de20d221 100644
--- 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):