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dummy: Introduce new --enable-dummy=system option.

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Until now there have been two variants for --enable-dummy:

    * --enable-dummy: This adds support for "dummy" dpif and netdev.

    * --enable-dummy=override: In addition, this replaces *every* existing
      dpif and netdev by the dummy type.

The latter is useful for testing but it defeats the possibility of using
the userspace native tunneling implementation (because all the tunnel
netdevs get replaced by dummy netdevs).  Thus, this commit adds a third
variant:

    * --enable-dummy=system: This replaces the "system" dpif and netdev
      by dummies but leaves the others untouched.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
This commit is contained in:
Ben Pfaff
2015-06-13 16:58:49 -07:00
parent 7a82d30569
commit 8420c7ad4e
5 changed files with 76 additions and 39 deletions
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20
lib/dpif-netdev.c
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@@ -3688,21 +3688,29 @@ dpif_dummy_register__(const char *type)
dp_register_provider(class);
}
void
dpif_dummy_register(bool override)
static void
dpif_dummy_override(const char *type)
{
if (override) {
if (!dp_unregister_provider(type)) {
dpif_dummy_register__(type);
}
}
void
dpif_dummy_register(enum dummy_level level)
{
if (level == DUMMY_OVERRIDE_ALL) {
struct sset types;
const char *type;
sset_init(&types);
dp_enumerate_types(&types);
SSET_FOR_EACH (type, &types) {
if (!dp_unregister_provider(type)) {
dpif_dummy_register__(type);
}
dpif_dummy_override(type);
}
sset_destroy(&types);
} else if (level == DUMMY_OVERRIDE_SYSTEM) {
dpif_dummy_override("system");
}
dpif_dummy_register__("dummy");