cxgb3 - Expose HW memory page info

A HW issue requires limiting the receive window size
to 23 pages of internal memory.
These pages can be configured to different sizes,
thus the RDMA driver needs to know the
page size to enforce the upper limit.

Also assign explicit enum values.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/net/cxgb3/cxgb3_offload.c b/drivers/net/cxgb3/cxgb3_offload.c
index bdff7baeb59d..bac9214170ae 100644
--- a/drivers/net/cxgb3/cxgb3_offload.c
+++ b/drivers/net/cxgb3/cxgb3_offload.c
@@ -317,6 +317,8 @@ static int cxgb_offload_ctl(struct t3cdev *tdev, unsigned int req, void *data)
         struct iff_mac *iffmacp;
         struct ddp_params *ddpp;
         struct adap_ports *ports;
+        struct ofld_page_info *rx_page_info;
+        struct tp_params *tp = &adapter->params.tp;
         int i;
 
         switch (req) {
@@ -382,6 +384,11 @@ static int cxgb_offload_ctl(struct t3cdev *tdev, unsigned int req, void *data)
                 if (!offload_running(adapter))
                         return -EAGAIN;
                 return cxgb_rdma_ctl(adapter, req, data);
+        case GET_RX_PAGE_INFO:
+                rx_page_info = data;
+                rx_page_info->page_size = tp->rx_pg_size;
+                rx_page_info->num = tp->rx_num_pgs;
+                break;
         default:
                 return -EOPNOTSUPP;
         }