iw_cxgb4: use wildcard mapping for getting remote addr info

For listening endpoints bound to the wildcard address, we need to pass
the wildcard address mapping to iwpm_get_remote_info() instead of the
mapped address of the new child connection.

Without this fix, and with iwarp port mapping enabled, each iw_cxgb4
connection that is spawned from a listening endpoint bound to the wildcard
address, will generate an annoying dmesg entry about failing to find
the remote address mapping info, and the connection state displayed in
debugfs under /sys/kernel/debug/iw_cxgb4/<pci-slot-no>/eps  will not have
the peer's address/port mapping info.  The connection still works though.

Fixes: 5b6b8fe ("RDMA/cxgb4: Report the actual address of the remote connecting peer")

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index bb95a6c..3ad8dc7 100644 (file)
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -583,18 +583,18 @@ static void c4iw_record_pm_msg(struct c4iw_ep *ep,
                sizeof(ep->com.mapped_remote_addr));
 }
 
-static int get_remote_addr(struct c4iw_ep *ep)
+static int get_remote_addr(struct c4iw_ep *parent_ep, struct c4iw_ep *child_ep)
 {
        int ret;
 
-       print_addr(&ep->com, __func__, "get_remote_addr");
+       print_addr(&parent_ep->com, __func__, "get_remote_addr parent_ep ");
+       print_addr(&child_ep->com, __func__, "get_remote_addr child_ep ");
 
-       ret = iwpm_get_remote_info(&ep->com.mapped_local_addr,
-                                  &ep->com.mapped_remote_addr,
-                                  &ep->com.remote_addr, RDMA_NL_C4IW);
+       ret = iwpm_get_remote_info(&parent_ep->com.mapped_local_addr,
+                                  &child_ep->com.mapped_remote_addr,
+                                  &child_ep->com.remote_addr, RDMA_NL_C4IW);
        if (ret)
-               pr_info(MOD "Unable to find remote peer addr info - err %d\n",
-                       ret);
+               PDBG("Unable to find remote peer addr info - err %d\n", ret);
 
        return ret;
 }
@@ -2420,7 +2420,7 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
        }
        memcpy(&child_ep->com.remote_addr, &child_ep->com.mapped_remote_addr,
               sizeof(child_ep->com.remote_addr));
-       get_remote_addr(child_ep);
+       get_remote_addr(parent_ep, child_ep);
 
        c4iw_get_ep(&parent_ep->com);
        child_ep->parent_ep = parent_ep;