NetIO (BSD): add txDrops detection if supported

CHANGELOG.md

@@ -13,6 +13,7 @@ Features:
 * Detect WM / DE by enumerating running processes (WM / DE, NetBSD)
 * Generate manual pages from `help.json` (Doc)
 * Detect marketing name of vivo smartphone (Host, Android)
+* Add txDrops detection if supported (NetIO, *BSD)
 * Support percent type config in module level. Example: 
 
 ```json

CMakeLists.txt

@@ -1180,6 +1180,16 @@ elseif(NetBSD)
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-rpath,/usr/X11R7/lib -Wl,-rpath,/usr/pkg/lib") # ditto
 endif()
 
+if(FreeBSD OR OpenBSD OR NetBSD)
+    include(CheckStructHasMember)
+    set(CMAKE_REQUIRED_DEFINITIONS "-D_IFI_OQDROPS=1")
+    CHECK_STRUCT_HAS_MEMBER("struct if_data" ifi_oqdrops net/if.h HAVE_IFI_OQDROPS LANGUAGE C)
+    if(HAVE_IFI_OQDROPS)
+    target_compile_definitions(libfastfetch PUBLIC _IFI_OQDROPS FF_HAVE_IFI_OQDROPS)
+    endif()
+    unset(CMAKE_REQUIRED_DEFINITIONS)
+endif()
+
 if(HAVE_STATX)
     target_compile_definitions(libfastfetch PUBLIC FF_HAVE_STATX)
 endif()

src/detection/netio/netio_bsd.c

@@ -1,8 +1,6 @@
 #include "netio.h"
 
-#include "common/io/io.h"
 #include "common/netif/netif.h"
-#include "util/stringUtils.h"
 #include "util/mallocHelper.h"
 
 #include <net/if.h>
@@ -48,8 +46,8 @@ const char* ffNetIOGetIoCounters(FFlist* result, FFNetIOOptions* options)
             .rxPackets = ifm->ifm_data.ifi_ipackets,
             .txErrors = ifm->ifm_data.ifi_oerrors,
             .rxErrors = ifm->ifm_data.ifi_ierrors,
-            #ifdef _IFI_OQDROPS
-            .txDrops = if2m->ifm_data.ifi_oqdrops,
+            #ifdef FF_HAVE_IFI_OQDROPS
+            .txDrops = ifm->ifm_data.ifi_oqdrops,
             #else
             .txDrops = 0, // unsupported
             #endif