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dpif-netdev: Add command to get dpif implementations.

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This commit adds a new command to retrieve the list of available
DPIF implementations. This can be used by to check what implementations
of the DPIF are available in any given OVS binary. It also returns which
implementations are in use by the OVS PMD threads.

Usage:
 $ ovs-appctl dpif-netdev/dpif-impl-get

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Co-authored-by: Cian Ferriter <cian.ferriter@intel.com>
Signed-off-by: Cian Ferriter <cian.ferriter@intel.com>
Acked-by: Flavio Leitner <fbl@sysclose.org>
Signed-off-by: Ian Stokes <ian.stokes@intel.com>
This commit is contained in:
Harry van Haaren
2021-07-09 15:58:19 +00:00
committed by Ian Stokes
parent abb807e27d
commit 3f86fdf5ce
6 changed files with 75 additions and 0 deletions
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26
lib/dpif-netdev.c
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@@ -965,6 +965,29 @@ dpif_netdev_subtable_lookup_set(struct unixctl_conn *conn, int argc OVS_UNUSED,
ds_destroy(&reply);
}
static void
dpif_netdev_impl_get(struct unixctl_conn *conn, int argc OVS_UNUSED,
const char *argv[] OVS_UNUSED, void *aux OVS_UNUSED)
{
struct ds reply = DS_EMPTY_INITIALIZER;
struct shash_node *node;
ovs_mutex_lock(&dp_netdev_mutex);
SHASH_FOR_EACH (node, &dp_netdevs) {
struct dp_netdev_pmd_thread **pmd_list;
struct dp_netdev *dp = node->data;
size_t n;
/* Get PMD threads list, required to get the DPIF impl used by each PMD
* thread. */
sorted_poll_thread_list(dp, &pmd_list, &n);
dp_netdev_impl_get(&reply, pmd_list, n);
}
ovs_mutex_unlock(&dp_netdev_mutex);
unixctl_command_reply(conn, ds_cstr(&reply));
ds_destroy(&reply);
}
static void
dpif_netdev_impl_set(struct unixctl_conn *conn, int argc OVS_UNUSED,
const char *argv[], void *aux OVS_UNUSED)
@@ -1251,6 +1274,9 @@ dpif_netdev_init(void)
"dpif_implementation_name",
1, 1, dpif_netdev_impl_set,
NULL);
unixctl_command_register("dpif-netdev/dpif-impl-get", "",
0, 0, dpif_netdev_impl_get,
NULL);
return 0;
}