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linux-stable/include/linux/if_link.h
Sridhar Samudrala eb06acdc85 macvlan: Introduce 'passthru' mode to takeover the underlying device 
With the current default 'vepa' mode, a KVM guest using virtio with
macvtap backend has the following limitations.
- cannot change/add a mac address on the guest virtio-net
- cannot create a vlan device on the guest virtio-net
- cannot enable promiscuous mode on guest virtio-net

To address these limitations, this patch introduces a new mode called
'passthru' when creating a macvlan device which allows takeover of the
underlying device and passing it to a guest using virtio with macvtap
backend.

Only one macvlan device is allowed in passthru mode and it inherits
the mac address from the underlying device and sets it in promiscuous
mode to receive and forward all the packets.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>

-------------------------------------------------------------------------
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-22 08:24:29 -08:00

381 lines
8.9 KiB
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#ifndef _LINUX_IF_LINK_H
#define _LINUX_IF_LINK_H
#include <linux/types.h>
#include <linux/netlink.h>
/* This struct should be in sync with struct rtnl_link_stats64 */
struct rtnl_link_stats {
__u32 rx_packets; /* total packets received */
__u32 tx_packets; /* total packets transmitted */
__u32 rx_bytes; /* total bytes received */
__u32 tx_bytes; /* total bytes transmitted */
__u32 rx_errors; /* bad packets received */
__u32 tx_errors; /* packet transmit problems */
__u32 rx_dropped; /* no space in linux buffers */
__u32 tx_dropped; /* no space available in linux */
__u32 multicast; /* multicast packets received */
__u32 collisions;
/* detailed rx_errors: */
__u32 rx_length_errors;
__u32 rx_over_errors; /* receiver ring buff overflow */
__u32 rx_crc_errors; /* recved pkt with crc error */
__u32 rx_frame_errors; /* recv'd frame alignment error */
__u32 rx_fifo_errors; /* recv'r fifo overrun */
__u32 rx_missed_errors; /* receiver missed packet */
/* detailed tx_errors */
__u32 tx_aborted_errors;
__u32 tx_carrier_errors;
__u32 tx_fifo_errors;
__u32 tx_heartbeat_errors;
__u32 tx_window_errors;
/* for cslip etc */
__u32 rx_compressed;
__u32 tx_compressed;
};
/* The main device statistics structure */
struct rtnl_link_stats64 {
__u64 rx_packets; /* total packets received */
__u64 tx_packets; /* total packets transmitted */
__u64 rx_bytes; /* total bytes received */
__u64 tx_bytes; /* total bytes transmitted */
__u64 rx_errors; /* bad packets received */
__u64 tx_errors; /* packet transmit problems */
__u64 rx_dropped; /* no space in linux buffers */
__u64 tx_dropped; /* no space available in linux */
__u64 multicast; /* multicast packets received */
__u64 collisions;
/* detailed rx_errors: */
__u64 rx_length_errors;
__u64 rx_over_errors; /* receiver ring buff overflow */
__u64 rx_crc_errors; /* recved pkt with crc error */
__u64 rx_frame_errors; /* recv'd frame alignment error */
__u64 rx_fifo_errors; /* recv'r fifo overrun */
__u64 rx_missed_errors; /* receiver missed packet */
/* detailed tx_errors */
__u64 tx_aborted_errors;
__u64 tx_carrier_errors;
__u64 tx_fifo_errors;
__u64 tx_heartbeat_errors;
__u64 tx_window_errors;
/* for cslip etc */
__u64 rx_compressed;
__u64 tx_compressed;
};
/* The struct should be in sync with struct ifmap */
struct rtnl_link_ifmap {
__u64 mem_start;
__u64 mem_end;
__u64 base_addr;
__u16 irq;
__u8 dma;
__u8 port;
};
/*
* IFLA_AF_SPEC
* Contains nested attributes for address family specific attributes.
* Each address family may create a attribute with the address family
* number as type and create its own attribute structure in it.
*
* Example:
* [IFLA_AF_SPEC] = {
* [AF_INET] = {
* [IFLA_INET_CONF] = ...,
* },
* [AF_INET6] = {
* [IFLA_INET6_FLAGS] = ...,
* [IFLA_INET6_CONF] = ...,
* }
* }
*/
enum {
IFLA_UNSPEC,
IFLA_ADDRESS,
IFLA_BROADCAST,
IFLA_IFNAME,
IFLA_MTU,
IFLA_LINK,
IFLA_QDISC,
IFLA_STATS,
IFLA_COST,
#define IFLA_COST IFLA_COST
IFLA_PRIORITY,
#define IFLA_PRIORITY IFLA_PRIORITY
IFLA_MASTER,
#define IFLA_MASTER IFLA_MASTER
IFLA_WIRELESS, /* Wireless Extension event - see wireless.h */
#define IFLA_WIRELESS IFLA_WIRELESS
IFLA_PROTINFO, /* Protocol specific information for a link */
#define IFLA_PROTINFO IFLA_PROTINFO
IFLA_TXQLEN,
#define IFLA_TXQLEN IFLA_TXQLEN
IFLA_MAP,
#define IFLA_MAP IFLA_MAP
IFLA_WEIGHT,
#define IFLA_WEIGHT IFLA_WEIGHT
IFLA_OPERSTATE,
IFLA_LINKMODE,
IFLA_LINKINFO,
#define IFLA_LINKINFO IFLA_LINKINFO
IFLA_NET_NS_PID,
IFLA_IFALIAS,
IFLA_NUM_VF, /* Number of VFs if device is SR-IOV PF */
IFLA_VFINFO_LIST,
IFLA_STATS64,
IFLA_VF_PORTS,
IFLA_PORT_SELF,
IFLA_AF_SPEC,
__IFLA_MAX
};
#define IFLA_MAX (__IFLA_MAX - 1)
/* backwards compatibility for userspace */
#ifndef __KERNEL__
#define IFLA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
#endif
enum {
IFLA_INET_UNSPEC,
IFLA_INET_CONF,
__IFLA_INET_MAX,
};
#define IFLA_INET_MAX (__IFLA_INET_MAX - 1)
/* ifi_flags.
IFF_* flags.
The only change is:
IFF_LOOPBACK, IFF_BROADCAST and IFF_POINTOPOINT are
more not changeable by user. They describe link media
characteristics and set by device driver.
Comments:
- Combination IFF_BROADCAST|IFF_POINTOPOINT is invalid
- If neither of these three flags are set;
the interface is NBMA.
- IFF_MULTICAST does not mean anything special:
multicasts can be used on all not-NBMA links.
IFF_MULTICAST means that this media uses special encapsulation
for multicast frames. Apparently, all IFF_POINTOPOINT and
IFF_BROADCAST devices are able to use multicasts too.
*/
/* IFLA_LINK.
For usual devices it is equal ifi_index.
If it is a "virtual interface" (f.e. tunnel), ifi_link
can point to real physical interface (f.e. for bandwidth calculations),
or maybe 0, what means, that real media is unknown (usual
for IPIP tunnels, when route to endpoint is allowed to change)
*/
/* Subtype attributes for IFLA_PROTINFO */
enum {
IFLA_INET6_UNSPEC,
IFLA_INET6_FLAGS, /* link flags */
IFLA_INET6_CONF, /* sysctl parameters */
IFLA_INET6_STATS, /* statistics */
IFLA_INET6_MCAST, /* MC things. What of them? */
IFLA_INET6_CACHEINFO, /* time values and max reasm size */
IFLA_INET6_ICMP6STATS, /* statistics (icmpv6) */
__IFLA_INET6_MAX
};
#define IFLA_INET6_MAX (__IFLA_INET6_MAX - 1)
struct ifla_cacheinfo {
__u32 max_reasm_len;
__u32 tstamp; /* ipv6InterfaceTable updated timestamp */
__u32 reachable_time;
__u32 retrans_time;
};
enum {
IFLA_INFO_UNSPEC,
IFLA_INFO_KIND,
IFLA_INFO_DATA,
IFLA_INFO_XSTATS,
__IFLA_INFO_MAX,
};
#define IFLA_INFO_MAX (__IFLA_INFO_MAX - 1)
/* VLAN section */
enum {
IFLA_VLAN_UNSPEC,
IFLA_VLAN_ID,
IFLA_VLAN_FLAGS,
IFLA_VLAN_EGRESS_QOS,
IFLA_VLAN_INGRESS_QOS,
__IFLA_VLAN_MAX,
};
#define IFLA_VLAN_MAX (__IFLA_VLAN_MAX - 1)
struct ifla_vlan_flags {
__u32 flags;
__u32 mask;
};
enum {
IFLA_VLAN_QOS_UNSPEC,
IFLA_VLAN_QOS_MAPPING,
__IFLA_VLAN_QOS_MAX
};
#define IFLA_VLAN_QOS_MAX (__IFLA_VLAN_QOS_MAX - 1)
struct ifla_vlan_qos_mapping {
__u32 from;
__u32 to;
};
/* MACVLAN section */
enum {
IFLA_MACVLAN_UNSPEC,
IFLA_MACVLAN_MODE,
__IFLA_MACVLAN_MAX,
};
#define IFLA_MACVLAN_MAX (__IFLA_MACVLAN_MAX - 1)
enum macvlan_mode {
MACVLAN_MODE_PRIVATE = 1, /* don't talk to other macvlans */
MACVLAN_MODE_VEPA = 2, /* talk to other ports through ext bridge */
MACVLAN_MODE_BRIDGE = 4, /* talk to bridge ports directly */
MACVLAN_MODE_PASSTHRU = 8,/* take over the underlying device */
};
/* SR-IOV virtual function management section */
enum {
IFLA_VF_INFO_UNSPEC,
IFLA_VF_INFO,
__IFLA_VF_INFO_MAX,
};
#define IFLA_VF_INFO_MAX (__IFLA_VF_INFO_MAX - 1)
enum {
IFLA_VF_UNSPEC,
IFLA_VF_MAC, /* Hardware queue specific attributes */
IFLA_VF_VLAN,
IFLA_VF_TX_RATE, /* TX Bandwidth Allocation */
__IFLA_VF_MAX,
};
#define IFLA_VF_MAX (__IFLA_VF_MAX - 1)
struct ifla_vf_mac {
__u32 vf;
__u8 mac[32]; /* MAX_ADDR_LEN */
};
struct ifla_vf_vlan {
__u32 vf;
__u32 vlan; /* 0 - 4095, 0 disables VLAN filter */
__u32 qos;
};
struct ifla_vf_tx_rate {
__u32 vf;
__u32 rate; /* Max TX bandwidth in Mbps, 0 disables throttling */
};
struct ifla_vf_info {
__u32 vf;
__u8 mac[32];
__u32 vlan;
__u32 qos;
__u32 tx_rate;
};
/* VF ports management section
*
* Nested layout of set/get msg is:
*
* [IFLA_NUM_VF]
* [IFLA_VF_PORTS]
* [IFLA_VF_PORT]
* [IFLA_PORT_*], ...
* [IFLA_VF_PORT]
* [IFLA_PORT_*], ...
* ...
* [IFLA_PORT_SELF]
* [IFLA_PORT_*], ...
*/
enum {
IFLA_VF_PORT_UNSPEC,
IFLA_VF_PORT, /* nest */
__IFLA_VF_PORT_MAX,
};
#define IFLA_VF_PORT_MAX (__IFLA_VF_PORT_MAX - 1)
enum {
IFLA_PORT_UNSPEC,
IFLA_PORT_VF, /* __u32 */
IFLA_PORT_PROFILE, /* string */
IFLA_PORT_VSI_TYPE, /* 802.1Qbg (pre-)standard VDP */
IFLA_PORT_INSTANCE_UUID, /* binary UUID */
IFLA_PORT_HOST_UUID, /* binary UUID */
IFLA_PORT_REQUEST, /* __u8 */
IFLA_PORT_RESPONSE, /* __u16, output only */
__IFLA_PORT_MAX,
};
#define IFLA_PORT_MAX (__IFLA_PORT_MAX - 1)
#define PORT_PROFILE_MAX 40
#define PORT_UUID_MAX 16
#define PORT_SELF_VF -1
enum {
PORT_REQUEST_PREASSOCIATE = 0,
PORT_REQUEST_PREASSOCIATE_RR,
PORT_REQUEST_ASSOCIATE,
PORT_REQUEST_DISASSOCIATE,
};
enum {
PORT_VDP_RESPONSE_SUCCESS = 0,
PORT_VDP_RESPONSE_INVALID_FORMAT,
PORT_VDP_RESPONSE_INSUFFICIENT_RESOURCES,
PORT_VDP_RESPONSE_UNUSED_VTID,
PORT_VDP_RESPONSE_VTID_VIOLATION,
PORT_VDP_RESPONSE_VTID_VERSION_VIOALTION,
PORT_VDP_RESPONSE_OUT_OF_SYNC,
/* 0x08-0xFF reserved for future VDP use */
PORT_PROFILE_RESPONSE_SUCCESS = 0x100,
PORT_PROFILE_RESPONSE_INPROGRESS,
PORT_PROFILE_RESPONSE_INVALID,
PORT_PROFILE_RESPONSE_BADSTATE,
PORT_PROFILE_RESPONSE_INSUFFICIENT_RESOURCES,
PORT_PROFILE_RESPONSE_ERROR,
};
struct ifla_port_vsi {
__u8 vsi_mgr_id;
__u8 vsi_type_id[3];
__u8 vsi_type_version;
__u8 pad[3];
};
#endif /* _LINUX_IF_LINK_H */
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