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[PATCH v2 23/27] failover: split failover_find_primary_device_id()
From: |
Juan Quintela |
Subject: |
[PATCH v2 23/27] failover: split failover_find_primary_device_id() |
Date: |
Wed, 18 Nov 2020 09:37:44 +0100 |
So we can calculate the device id when we need it.
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
hw/net/virtio-net.c | 63 +++++++++++++++++++++++++++++++++------------
1 file changed, 47 insertions(+), 16 deletions(-)
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index b994796734..2c502c13fd 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -788,6 +788,49 @@ static inline uint64_t
virtio_net_supported_guest_offloads(VirtIONet *n)
return virtio_net_guest_offloads_by_features(vdev->guest_features);
}
+typedef struct {
+ VirtIONet *n;
+ char *id;
+} FailoverId;
+
+/**
+ * Set the id of the failover primary device
+ *
+ * @opaque: FailoverId to setup
+ * @opts: opts for device we are handling
+ * @errp: returns an error if this function fails
+ */
+static int failover_set_primary(void *opaque, QemuOpts *opts, Error **errp)
+{
+ FailoverId *fid = opaque;
+ const char *standby_id = qemu_opt_get(opts, "failover_pair_id");
+
+ if (g_strcmp0(standby_id, fid->n->netclient_name) == 0) {
+ fid->id = g_strdup(opts->id);
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
+ * Find the primary device id for this failover virtio-net
+ *
+ * @n: VirtIONet device
+ * @errp: returns an error if this function fails
+ */
+static char *failover_find_primary_device_id(VirtIONet *n)
+{
+ Error *err = NULL;
+ FailoverId fid;
+
+ if (!qemu_opts_foreach(qemu_find_opts("device"),
+ failover_set_primary, &fid, &err)) {
+ return NULL;
+ }
+ return fid.id;
+}
+
static void failover_add_primary(VirtIONet *n, Error **errp)
{
Error *err = NULL;
@@ -812,20 +855,6 @@ static void failover_add_primary(VirtIONet *n, Error
**errp)
error_propagate(errp, err);
}
-static int is_my_primary(void *opaque, QemuOpts *opts, Error **errp)
-{
- VirtIONet *n = opaque;
- int ret = 0;
- const char *standby_id = qemu_opt_get(opts, "failover_pair_id");
-
- if (g_strcmp0(standby_id, n->netclient_name) == 0) {
- n->primary_device_id = g_strdup(opts->id);
- ret = 1;
- }
-
- return ret;
-}
-
/**
* Find the primary device for this failover virtio-net
*
@@ -834,11 +863,13 @@ static int is_my_primary(void *opaque, QemuOpts *opts,
Error **errp)
*/
static DeviceState *failover_find_primary_device(VirtIONet *n)
{
- Error *err = NULL;
+ char *id = failover_find_primary_device_id(n);
- if (!qemu_opts_foreach(qemu_find_opts("device"), is_my_primary, n, &err)) {
+ if (!id) {
return NULL;
}
+ n->primary_device_id = g_strdup(id);
+
return qdev_find_recursive(sysbus_get_default(), n->primary_device_id);
}
--
2.26.2
- [PATCH v2 12/27] failover: Remove primary_device_dict, (continued)
- [PATCH v2 12/27] failover: Remove primary_device_dict, Juan Quintela, 2020/11/18
- [PATCH v2 14/27] failover: simplify virtio_net_find_primary(), Juan Quintela, 2020/11/18
- [PATCH v2 15/27] failover: should_be_hidden() should take a bool, Juan Quintela, 2020/11/18
- [PATCH v2 16/27] failover: Rename function to hide_device(), Juan Quintela, 2020/11/18
- [PATCH v2 17/27] failover: virtio_net_connect_failover_devices() does nothing, Juan Quintela, 2020/11/18
- [PATCH v2 18/27] failover: Rename to failover_find_primary_device(), Juan Quintela, 2020/11/18
- [PATCH v2 19/27] failover: simplify qdev_device_add() failover case, Juan Quintela, 2020/11/18
- [PATCH v2 20/27] failover: simplify qdev_device_add(), Juan Quintela, 2020/11/18
- [PATCH v2 21/27] failover: make sure that id always exist, Juan Quintela, 2020/11/18
- [PATCH v2 22/27] failover: remove failover_find_primary_device() error parameter, Juan Quintela, 2020/11/18
- [PATCH v2 23/27] failover: split failover_find_primary_device_id(),
Juan Quintela <=
- [PATCH v2 24/27] failover: We don't need to cache primary_device_id anymore, Juan Quintela, 2020/11/18
- [PATCH v2 25/27] failover: Caller of this two functions already have primary_dev, Juan Quintela, 2020/11/18
- [PATCH v2 27/27] failover: Remove primary_dev member, Juan Quintela, 2020/11/18
- [PATCH v2 26/27] failover: simplify failover_unplug_primary, Juan Quintela, 2020/11/18
- Re: [PATCH v2 00/27] Virtio net failover fixes, Michael S. Tsirkin, 2020/11/18