Le mardi 16 février 2010 à 08:03 -0800, Dan Smith a écrit :
> Adds a small ndo_checkpoint() handler for loopback devices to write the
> name and addresses like other interfaces.
>
> Signed-off-by: Dan Smith <danms@xxxxxxxxxx>
> ---
> drivers/net/loopback.c | 41 ++++++++++++++++++++++++++++++++++++++---
> 1 files changed, 38 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
> index b9fcc98..816a527 100644
> --- a/drivers/net/loopback.c
> +++ b/drivers/net/loopback.c
> @@ -57,6 +57,8 @@
> #include <linux/ip.h>
> #include <linux/tcp.h>
> #include <linux/percpu.h>
> +#include <linux/checkpoint.h>
> +#include <linux/checkpoint_hdr.h>
> #include <net/net_namespace.h>
>
> struct pcpu_lstats {
> @@ -153,10 +155,43 @@ static void loopback_dev_free(struct net_device *dev)
> free_netdev(dev);
> }
>
Dont you have a #ifdef CONFIG_CHECKPOINT or something to avoid this for
small machines ?
> +static int loopback_checkpoint(struct ckpt_ctx *ctx, struct net_device *dev)
> +{
> + struct ckpt_hdr_netdev *h;
> + struct ckpt_netdev_addr *addrs;
> + int ret;
> +
> + h = ckpt_netdev_base(ctx, dev, &addrs);
> + if (IS_ERR(h))
> + return PTR_ERR(h);
> +
> + h->type = CKPT_NETDEV_LO;
> +
> + ret = ckpt_write_obj(ctx, (struct ckpt_hdr *)h);
> + if (ret < 0)
> + goto out;
> +
> + ret = ckpt_write_buffer(ctx, dev->name, IFNAMSIZ);
> + if (ret < 0)
> + goto out;
> +
> + if (h->inet_addrs > 0) {
> + int len = (sizeof(struct ckpt_netdev_addr) * h->inet_addrs);
> + ret = ckpt_write_buffer(ctx, addrs, len);
> + }
> +
> + out:
> + ckpt_hdr_put(ctx, h);
> + kfree(addrs);
> +
> + return ret;
> +}
> +
> static const struct net_device_ops loopback_ops = {
> - .ndo_init = loopback_dev_init,
> - .ndo_start_xmit= loopback_xmit,
> - .ndo_get_stats = loopback_get_stats,
> + .ndo_init = loopback_dev_init,
> + .ndo_start_xmit = loopback_xmit,
> + .ndo_get_stats = loopback_get_stats,
> + .ndo_checkpoint = loopback_checkpoint,
> };
>
> /*
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