netbuf: correctly reset netbuf checksum for LWIP_CHECKSUM_ON_COPY==1

9 years ago · 194803a3a7
1 changed files with 4 additions and 0 deletions
--- a/src/api/netbuf.c
+++ b/src/api/netbuf.c
@ -131,6 +131,10 @@ netbuf_free(struct netbuf *buf)
    pbuf_free(buf->p);
  }
  buf->p = buf->ptr = NULL;
+#if LWIP_CHECKSUM_ON_COPY
+  buf->flags = 0;
+  buf->toport_chksum = 0;
+#endif /* LWIP_CHECKSUM_ON_COPY */
 }

 /**