1 files changed, 26 insertions, 7 deletions

diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index ede1475bee0..e28877c4ce1 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -155,20 +155,39 @@ static int iser_create_ib_conn_res(struct iser_conn *ib_conn)
 {
         struct iser_device      *device;
         struct ib_qp_init_attr  init_attr;
-        int                     ret = -ENOMEM;
+        int                     req_err, resp_err, ret = -ENOMEM;
         struct ib_fmr_pool_param params;
 
         BUG_ON(ib_conn->device == NULL);
 
         device = ib_conn->device;
 
-        ib_conn->login_buf = kmalloc(ISER_RX_LOGIN_SIZE, GFP_KERNEL);
+        ib_conn->login_buf = kmalloc(ISCSI_DEF_MAX_RECV_SEG_LEN +
+                                        ISER_RX_LOGIN_SIZE, GFP_KERNEL);
         if (!ib_conn->login_buf)
                 goto out_err;
 
-        ib_conn->login_dma = ib_dma_map_single(ib_conn->device->ib_device,
-                                (void *)ib_conn->login_buf, ISER_RX_LOGIN_SIZE,
-                                DMA_FROM_DEVICE);
+        ib_conn->login_req_buf  = ib_conn->login_buf;
+        ib_conn->login_resp_buf = ib_conn->login_buf + ISCSI_DEF_MAX_RECV_SEG_LEN;
+
+        ib_conn->login_req_dma = ib_dma_map_single(ib_conn->device->ib_device,
+                                (void *)ib_conn->login_req_buf,
+                                ISCSI_DEF_MAX_RECV_SEG_LEN, DMA_TO_DEVICE);
+
+        ib_conn->login_resp_dma = ib_dma_map_single(ib_conn->device->ib_device,
+                                (void *)ib_conn->login_resp_buf,
+                                ISER_RX_LOGIN_SIZE, DMA_FROM_DEVICE);
+
+        req_err  = ib_dma_mapping_error(device->ib_device, ib_conn->login_req_dma);
+        resp_err = ib_dma_mapping_error(device->ib_device, ib_conn->login_resp_dma);
+
+        if (req_err || resp_err) {
+                if (req_err)
+                        ib_conn->login_req_dma = 0;
+                if (resp_err)
+                        ib_conn->login_resp_dma = 0;
+                goto out_err;
+        }
 
         ib_conn->page_vec = kmalloc(sizeof(struct iser_page_vec) +
                                     (sizeof(u64) * (ISCSI_ISER_SG_TABLESIZE +1)),
@@ -658,11 +677,11 @@ int iser_post_recvl(struct iser_conn *ib_conn)
         struct ib_sge     sge;
         int ib_ret;
 
-        sge.addr   = ib_conn->login_dma;
+        sge.addr   = ib_conn->login_resp_dma;
         sge.length = ISER_RX_LOGIN_SIZE;
         sge.lkey   = ib_conn->device->mr->lkey;
 
-        rx_wr.wr_id   = (unsigned long)ib_conn->login_buf;
+        rx_wr.wr_id   = (unsigned long)ib_conn->login_resp_buf;
         rx_wr.sg_list = &sge;
         rx_wr.num_sge = 1;
         rx_wr.next    = NULL;