af_xdp: remove the previous program before loading a new one

Otherwise, we will get an error. The program could remain from the previous run.

Type: fix

Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
Change-Id: I68e4072bd3b327592013804d67ccab7eb0ed3a0e

diff --git a/src/plugins/af_xdp/device.c b/src/plugins/af_xdp/device.c
index 570f34c..da8b58c 100644 (file)
--- a/src/plugins/af_xdp/device.c
+++ b/src/plugins/af_xdp/device.c
@@ -650,7 +650,8 @@ af_xdp_create_if (vlib_main_t * vm, af_xdp_create_if_args_t * args)
       goto err1;
     }
 
-  if (args->prog && af_xdp_load_program (args, ad))
+  if (args->prog &&
+      (af_xdp_remove_program (ad) || af_xdp_load_program (args, ad)))
     goto err2;
 
   q_num = clib_max (rxq_num, txq_num);