49da7e64f3
1. Provides infrastructure for vector IO using recvmmsg/sendmmsg.
1.1. Multi-message read.
1.2. Multi-message write.
1.3. Optimized queue support for multi-packet enqueue/dequeue.
1.4. BQL/DQL support.
2. Implements transports for several transports as well support
for direct wiring of PWEs to NIC. Allows direct connection of VMs
to host, other VMs and network devices with no switch in use.
2.1. Raw socket >4 times higher PPS and 10 times higher tcp RX
than existing pcap based transport (> 4Gbit)
2.2. New tap transport using socket RX and tap xmit. Similar
performance improvements (>4Gbit)
2.3. GRE transport - direct wiring to GRE PWE
2.4. L2TPv3 transport - direct wiring to L2TPv3 PWE
3. Tuning, performance and offload related setting support via ethtool.
4. Initial BPF support - used in tap/raw to avoid software looping
5. Scatter Gather support.
6. VNET and checksum offload support for raw socket transport.
7. TSO/GSO support where applicable or available
8. Migrates all error messages to netdevice_*() and rate limits
them where needed.
Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/*
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* Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*/
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#ifndef __UM_NET_KERN_H
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#define __UM_NET_KERN_H
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#include <linux/netdevice.h>
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#include <linux/platform_device.h>
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#include <linux/skbuff.h>
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#include <linux/socket.h>
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#include <linux/list.h>
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#include <linux/workqueue.h>
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struct uml_net {
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struct list_head list;
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struct net_device *dev;
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struct platform_device pdev;
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int index;
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};
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struct uml_net_private {
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struct list_head list;
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spinlock_t lock;
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struct net_device *dev;
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struct timer_list tl;
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struct work_struct work;
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int fd;
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unsigned char mac[ETH_ALEN];
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int max_packet;
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unsigned short (*protocol)(struct sk_buff *);
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int (*open)(void *);
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void (*close)(int, void *);
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void (*remove)(void *);
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int (*read)(int, struct sk_buff *skb, struct uml_net_private *);
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int (*write)(int, struct sk_buff *skb, struct uml_net_private *);
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void (*add_address)(unsigned char *, unsigned char *, void *);
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void (*delete_address)(unsigned char *, unsigned char *, void *);
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char user[0];
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};
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struct net_kern_info {
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void (*init)(struct net_device *, void *);
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unsigned short (*protocol)(struct sk_buff *);
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int (*read)(int, struct sk_buff *skb, struct uml_net_private *);
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int (*write)(int, struct sk_buff *skb, struct uml_net_private *);
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};
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struct transport {
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struct list_head list;
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const char *name;
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int (* const setup)(char *, char **, void *);
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const struct net_user_info *user;
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const struct net_kern_info *kern;
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const int private_size;
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const int setup_size;
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};
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extern struct net_device *ether_init(int);
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extern unsigned short ether_protocol(struct sk_buff *);
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extern int tap_setup_common(char *str, char *type, char **dev_name,
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char **mac_out, char **gate_addr);
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extern void register_transport(struct transport *new);
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extern unsigned short eth_protocol(struct sk_buff *skb);
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extern void uml_net_setup_etheraddr(struct net_device *dev, char *str);
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#endif
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