snort: fix descriptor offset may be truncated if buffers num too large

Type: fix
Signed-off-by: jiangxiaoming <jiangxiaoming@outlook.com>
Change-Id: I9694f7d8aad8868b11e08fabe179fd51c14dfcdb
diff --git a/src/plugins/snort/daq_vpp.h b/src/plugins/snort/daq_vpp.h
index 3b875aa..ebec554 100644
--- a/src/plugins/snort/daq_vpp.h
+++ b/src/plugins/snort/daq_vpp.h
@@ -67,7 +67,7 @@
 
 typedef struct
 {
-  uint32_t offset;
+  uint64_t offset;
   uint16_t length;
   uint16_t address_space_id;
   uint8_t buffer_pool;