From: xiaohui.xin@intel.com To: netdev@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mst@redhat.com, mingo@elte.hu, davem@davemloft.net, herbert@gondor.hengli.com.au, jdike@linux.intel.com Cc: Xin Xiaohui <xiaohui.xin@intel.com> Subject: [RFC PATCH v9 07/16] Modify netdev_alloc_page() to get external buffer Date: Fri, 6 Aug 2010 17:23:35 +0800 [thread overview] Message-ID: <1281086624-5765-8-git-send-email-xiaohui.xin@intel.com> (raw) In-Reply-To: <1281086624-5765-7-git-send-email-xiaohui.xin@intel.com> From: Xin Xiaohui <xiaohui.xin@intel.com> Currently, it can get external buffers from mp device. Signed-off-by: Xin Xiaohui <xiaohui.xin@intel.com> Signed-off-by: Zhao Yu <yzhao81new@gmail.com> Reviewed-by: Jeff Dike <jdike@linux.intel.com> --- net/core/skbuff.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 117d82b..1a61e2b 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -269,11 +269,38 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev, } EXPORT_SYMBOL(__netdev_alloc_skb); +struct page *netdev_alloc_ext_pages(struct net_device *dev, int npages) +{ + struct mpassthru_port *port; + struct skb_ext_page *ext_page = NULL; + + port = dev->mp_port; + if (!port) + goto out; + ext_page = port->ctor(port, NULL, npages); + if (ext_page) + return ext_page->page; +out: + return NULL; + +} +EXPORT_SYMBOL(netdev_alloc_ext_pages); + +struct page *netdev_alloc_ext_page(struct net_device *dev) +{ + return netdev_alloc_ext_pages(dev, 1); + +} +EXPORT_SYMBOL(netdev_alloc_ext_page); + struct page *__netdev_alloc_page(struct net_device *dev, gfp_t gfp_mask) { int node = dev->dev.parent ? dev_to_node(dev->dev.parent) : -1; struct page *page; + if (dev_is_mpassthru(dev)) + return netdev_alloc_ext_page(dev); + page = alloc_pages_node(node, gfp_mask, 0); return page; } -- 1.5.4.4
WARNING: multiple messages have this Message-ID (diff)
From: xiaohui.xin@intel.com To: netdev@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mst@redhat.com, mingo@elte.hu, davem@davemloft.net, herbert@gondor.apana.org.au, jdike@linux.intel.com Cc: Xin Xiaohui <xiaohui.xin@intel.com> Subject: [RFC PATCH v9 07/16] Modify netdev_alloc_page() to get external buffer Date: Fri, 6 Aug 2010 17:23:35 +0800 [thread overview] Message-ID: <1281086624-5765-8-git-send-email-xiaohui.xin@intel.com> (raw) In-Reply-To: <1281086624-5765-7-git-send-email-xiaohui.xin@intel.com> From: Xin Xiaohui <xiaohui.xin@intel.com> Currently, it can get external buffers from mp device. Signed-off-by: Xin Xiaohui <xiaohui.xin@intel.com> Signed-off-by: Zhao Yu <yzhao81new@gmail.com> Reviewed-by: Jeff Dike <jdike@linux.intel.com> --- net/core/skbuff.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 117d82b..1a61e2b 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -269,11 +269,38 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev, } EXPORT_SYMBOL(__netdev_alloc_skb); +struct page *netdev_alloc_ext_pages(struct net_device *dev, int npages) +{ + struct mpassthru_port *port; + struct skb_ext_page *ext_page = NULL; + + port = dev->mp_port; + if (!port) + goto out; + ext_page = port->ctor(port, NULL, npages); + if (ext_page) + return ext_page->page; +out: + return NULL; + +} +EXPORT_SYMBOL(netdev_alloc_ext_pages); + +struct page *netdev_alloc_ext_page(struct net_device *dev) +{ + return netdev_alloc_ext_pages(dev, 1); + +} +EXPORT_SYMBOL(netdev_alloc_ext_page); + struct page *__netdev_alloc_page(struct net_device *dev, gfp_t gfp_mask) { int node = dev->dev.parent ? dev_to_node(dev->dev.parent) : -1; struct page *page; + if (dev_is_mpassthru(dev)) + return netdev_alloc_ext_page(dev); + page = alloc_pages_node(node, gfp_mask, 0); return page; } -- 1.5.4.4
next prev parent reply other threads:[~2010-08-06 9:11 UTC|newest] Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-08-06 9:23 [RFC PATCH v9 00/16] Provide a zero-copy method on KVM virtio-net xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 01/16] Add a new structure for skb buffer from external xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 02/16] Add a new struct for device to manipulate external buffer xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 03/16] Add a ndo_mp_port_prep func to net_device_ops xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 04/16] Add a function make external buffer owner to query capability xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 05/16] Add a function to indicate if device use external buffer xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 06/16] Use callback to deal with skb_release_data() specially xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin [this message] 2010-08-06 9:23 ` [RFC PATCH v9 07/16] Modify netdev_alloc_page() to get external buffer xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 08/16] Modify netdev_free_page() to release " xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 09/16] Don't do skb recycle, if device use " xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 10/16] Add a hook to intercept external buffers from NIC driver xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 11/16] Add header file for mp device xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 13/16] Add a kconfig entry and make entry " xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 12/16] Add mp(mediate passthru) device xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 14/16] Provides multiple submits and asynchronous notifications xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 15/16] An example how to modifiy NIC driver to use napi_gro_frags() interface xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-08-06 9:23 ` [RFC PATCH v9 16/16] An example how to alloc user buffer based on " xiaohui.xin 2010-08-06 9:23 ` xiaohui.xin 2010-09-06 11:11 ` [RFC PATCH v9 12/16] Add mp(mediate passthru) device Michael S. Tsirkin 2010-09-10 13:40 ` Xin, Xiaohui 2010-09-11 7:41 ` Xin, Xiaohui 2010-09-12 13:37 ` Michael S. Tsirkin 2010-09-15 3:13 ` Xin, Xiaohui 2010-09-15 11:28 ` Michael S. Tsirkin 2010-09-17 3:16 ` Xin, Xiaohui 2010-09-20 8:08 ` xiaohui.xin 2010-09-20 11:36 ` Michael S. Tsirkin 2010-09-21 1:39 ` Xin, Xiaohui 2010-09-21 13:14 ` Michael S. Tsirkin 2010-09-22 11:41 ` Xin, Xiaohui 2010-09-22 11:55 ` Michael S. Tsirkin 2010-09-23 12:56 ` Xin, Xiaohui 2010-09-26 11:50 ` Michael S. Tsirkin 2010-09-27 0:42 ` Xin, Xiaohui 2010-09-11 9:42 ` Xin, Xiaohui 2010-08-11 1:23 ` [RFC PATCH v9 00/16] Provide a zero-copy method on KVM virtio-net Shirley Ma 2010-08-11 1:23 ` Shirley Ma 2010-08-11 1:43 ` Shirley Ma 2010-08-11 1:43 ` Shirley Ma 2010-08-11 6:01 ` Shirley Ma 2010-08-11 6:01 ` Shirley Ma 2010-08-11 6:55 ` Shirley Ma 2010-08-11 6:55 ` Shirley Ma 2010-09-03 10:52 ` Michael S. Tsirkin 2010-09-13 18:48 ` Shirley Ma 2010-09-13 21:35 ` Shirley Ma 2010-09-03 10:14 ` Michael S. Tsirkin 2010-09-03 20:29 ` Sridhar Samudrala
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