[Xen-devel] [PATCH 1 of 3] blktap3/libxl: add new device kind and disk back-end

[Thanos Makatos <thanos.makatos@xxxxxxxxxx>]

We use new identifiers so that blktap2 and blktap3 can co-exist.

Signed-off-by: Thanos Makatos <thanos.makatos@xxxxxxxxxx>

diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -58,6 +58,7 @@ libxl_disk_backend = Enumeration("disk_b
     (1, "PHY"),
     (2, "TAP"),
     (3, "QDISK"),
+    (4, "TAP3"),
     ])
 
 libxl_nic_type = Enumeration("nic_type", [
diff --git a/tools/libxl/libxl_types_internal.idl 
b/tools/libxl/libxl_types_internal.idl
--- a/tools/libxl/libxl_types_internal.idl
+++ b/tools/libxl/libxl_types_internal.idl
@@ -20,6 +20,7 @@ libxl__device_kind = Enumeration("device
     (6, "VKBD"),
     (7, "CONSOLE"),
     (8, "VTPM"),
+    (9, "VBD3"),
     ])
 
 libxl__console_backend = Enumeration("console_backend", [
diff --git a/tools/libxl/libxlu_disk_l.c b/tools/libxl/libxlu_disk_l.c
--- a/tools/libxl/libxlu_disk_l.c
+++ b/tools/libxl/libxlu_disk_l.c
@@ -859,6 +859,7 @@ static void setformat(DiskParseContext *
 static void setbackendtype(DiskParseContext *dpc, const char *str) {
     if (     !strcmp(str,"phy"))   DSET(dpc,backend,BACKEND,str,PHY);
     else if (!strcmp(str,"tap"))   DSET(dpc,backend,BACKEND,str,TAP);
+    else if (!strcmp(str,"tap3"))   DSET(dpc,backend,BACKEND,str,TAP3);
     else if (!strcmp(str,"qdisk")) DSET(dpc,backend,BACKEND,str,QDISK);
     else xlu__disk_err(dpc,str,"unknown value for backendtype");
 }
diff --git a/tools/libxl/libxlu_disk_l.l b/tools/libxl/libxlu_disk_l.l
--- a/tools/libxl/libxlu_disk_l.l
+++ b/tools/libxl/libxlu_disk_l.l
@@ -109,6 +109,7 @@ static void setformat(DiskParseContext *
 static void setbackendtype(DiskParseContext *dpc, const char *str) {
     if (     !strcmp(str,"phy"))   DSET(dpc,backend,BACKEND,str,PHY);
     else if (!strcmp(str,"tap"))   DSET(dpc,backend,BACKEND,str,TAP);
+    else if (!strcmp(str,"tap3"))   DSET(dpc,backend,BACKEND,str,TAP3);
     else if (!strcmp(str,"qdisk")) DSET(dpc,backend,BACKEND,str,QDISK);
     else xlu__disk_err(dpc,str,"unknown value for backendtype");
 }

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