[PATCH 3/6] libxl: Add a helper function to unprepare network devices

[Jano Tomko]

On a %A in %Y, Jim Fehlig wrote:
> Move network device cleanup code from libxlDomainCleanup to a helper
> function for use in a subsequent patch.
> 
> Signed-off-by: Jim Fehlig <jfehlig at suse.com>
> ---
>  src/libxl/libxl_domain.c | 49 +++++++++++++++++++++++-----------------
>  1 file changed, 28 insertions(+), 21 deletions(-)
> 
> diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c
> index e906495b64..f957c29d0d 100644
> --- a/src/libxl/libxl_domain.c
> +++ b/src/libxl/libxl_domain.c

> @@ -923,29 +950,9 @@ libxlDomainCleanup(libxlDriverPrivate *driver,
>          }
>      }
>  
> -    if ((vm->def->nnets)) {
> -        size_t i;
> -
> -        for (i = 0; i < vm->def->nnets; i++) {
> -            virDomainNetDef *net = vm->def->nets[i];
> -
> -            if (net->ifname &&
> -                STRPREFIX(net->ifname, LIBXL_GENERATED_PREFIX_XEN))
> -                VIR_FREE(net->ifname);
> -
> -            /* cleanup actual device */
> -            virDomainNetRemoveHostdev(vm->def, net);
> -            if (net->type == VIR_DOMAIN_NET_TYPE_NETWORK) {
> -                if (conn || (conn = virGetConnectNetwork()))
> -                    virDomainNetReleaseActualDevice(conn, vm->def, net);

This removes the last use of 'conn' from this function:
../src/libxl/libxl_domain.c:919:27: error: unused variable 'conn'
[-Werror,-Wunused-variable]
    g_autoptr(virConnect) conn = NULL;
                          ^
Jano

> -                else
> -                    VIR_WARN("Unable to release network device '%s'", NULLSTR(net->ifname));
> -            }
> -        }
> -    }
> +    libxlNetworkUnwindDevices(vm->def);
>  
>      file = g_strdup_printf("%s/%s.xml", cfg->stateDir, vm->def->name);
> -
>      if (unlink(file) < 0 && errno != ENOENT && errno != ENOTDIR)
>          VIR_DEBUG("Failed to remove domain XML for %s", vm->def->name);
>      VIR_FREE(file);
>