aboutsummaryrefslogtreecommitdiffstats
path: root/src/plugins/af_xdp/device.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/plugins/af_xdp/device.c')
-rw-r--r--src/plugins/af_xdp/device.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/plugins/af_xdp/device.c b/src/plugins/af_xdp/device.c
index d107a39b199..5a16ede1323 100644
--- a/src/plugins/af_xdp/device.c
+++ b/src/plugins/af_xdp/device.c
@@ -33,6 +33,10 @@
#include <vnet/interface/tx_queue_funcs.h>
#include "af_xdp.h"
+#ifndef XDP_UMEM_MIN_CHUNK_SIZE
+#define XDP_UMEM_MIN_CHUNK_SIZE 2048
+#endif
+
af_xdp_main_t af_xdp_main;
typedef struct
@@ -272,8 +276,18 @@ af_xdp_create_queue (vlib_main_t *vm, af_xdp_create_if_args_t *args,
(umem, uword_to_pointer (vm->buffer_main->buffer_mem_start, void *),
vm->buffer_main->buffer_mem_size, fq, cq, &umem_config))
{
+ uword sys_page_size = clib_mem_get_page_size ();
args->rv = VNET_API_ERROR_SYSCALL_ERROR_1;
args->error = clib_error_return_unix (0, "xsk_umem__create() failed");
+ /* this should mimic the Linux kernel net/xdp/xdp_umem.c:xdp_umem_reg()
+ * check */
+ if (umem_config.frame_size < XDP_UMEM_MIN_CHUNK_SIZE ||
+ umem_config.frame_size > sys_page_size)
+ args->error = clib_error_return (
+ args->error,
+ "(unsupported data-size? (should be between %d and %d))",
+ XDP_UMEM_MIN_CHUNK_SIZE - sizeof (vlib_buffer_t),
+ sys_page_size - sizeof (vlib_buffer_t));
goto err0;
}