From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Smith Subject: [PATCH 4/5] Add loopback checkpoint support Date: Tue, 16 Feb 2010 08:03:06 -0800 Message-ID: <1266336187-19105-5-git-send-email-danms@us.ibm.com> References: <1266336187-19105-1-git-send-email-danms@us.ibm.com> To: containers@lists.osdl.org, netdev@vger.kernel.org Return-path: Received: from stein.danplanet.com ([71.245.107.83]:60639 "EHLO stein.danplanet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932756Ab0BPQFH (ORCPT ); Tue, 16 Feb 2010 11:05:07 -0500 In-Reply-To: <1266336187-19105-1-git-send-email-danms@us.ibm.com> Sender: netdev-owner@vger.kernel.org List-ID: Adds a small ndo_checkpoint() handler for loopback devices to write the name and addresses like other interfaces. Signed-off-by: Dan Smith --- 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 #include #include +#include +#include #include struct pcpu_lstats { @@ -153,10 +155,43 @@ static void loopback_dev_free(struct net_device *dev) free_netdev(dev); } +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, }; /* -- 1.6.2.5