| Message ID | 38fbf05a450b34e939aa1b0f3a5126711990f0cc.1291187695.git.xiaohui.xin@intel.com |
|---|---|
| State | Changes Requested, archived |
| Delegated to: | David Miller |
| Headers | show |
From: xiaohui.xin@intel.com Date: Wed, 1 Dec 2010 16:08:13 +0800 > From: Xin Xiaohui <xiaohui.xin@intel.com> > > Add a structure in structure net_device, the new field is > named as mp_port. It's for mediate passthru (zero-copy). > It contains the capability for the net device driver, > a socket, and an external buffer creator, external means > skb buffer belongs to the device may not be allocated from > kernel space. > > 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> Please eliminate whatever is causing this indentation of your commit messages. There should be no special indentation of the commit message. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 46c36ff..f6b1870 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -325,6 +325,28 @@ enum netdev_state_t { __LINK_STATE_DORMANT, }; +/*The structure for mediate passthru(zero-copy). */ +struct mp_port { + /* the header len */ + int hdr_len; + /* the max payload len for one descriptor */ + int data_len; + /* the pages for DMA in one time */ + int npages; + /* the socket bind to */ + struct socket *sock; + /* the header len for virtio-net */ + int vnet_hlen; + /* the external buffer page creator */ + struct skb_ext_page *(*ctor)(struct mp_port *, + struct sk_buff *, int); + /* the hash function attached to find according + * backend ring descriptor info for one external + * buffer page. + */ + struct skb_ext_page *(*hash)(struct net_device *, + struct page *); +}; /* * This structure holds at boot time configured netdevice settings. They @@ -1045,7 +1067,8 @@ struct net_device { /* GARP */ struct garp_port *garp_port; - + /* mpassthru */ + struct mp_port *mp_port; /* class/net/name entry */ struct device dev; /* space for optional device, statistics, and wireless sysfs groups */