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datapath: Convert datapath operations to use Netlink framing.

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Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Ben Pfaff
2011-01-26 15:42:00 -08:00
parent 9c52546b52
commit d656937779
6 changed files with 1455 additions and 991 deletions
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120
include/openvswitch/datapath-protocol.h
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@@ -70,14 +70,11 @@
#include <linux/if_link.h>
#include <linux/netlink.h>
#define ODP_MAX 256 /* Maximum number of datapaths. */
#define ODP_DP_CREATE _IO('O', 0)
#define ODP_DP_DESTROY _IO('O', 1)
#define ODP_DP_STATS _IOW('O', 2, struct odp_stats)
#define ODP_GET_DROP_FRAGS _IOW('O', 3, int)
#define ODP_SET_DROP_FRAGS _IOR('O', 4, int)
#define ODP_DP_NEW _IOWR('O', 0, struct odp_datapath)
#define ODP_DP_DEL _IOR('O', 1, struct odp_datapath)
#define ODP_DP_GET _IOWR('O', 2, struct odp_datapath)
#define ODP_DP_SET _IOWR('O', 3, struct odp_datapath)
#define ODP_DP_DUMP _IOWR('O', 4, struct odp_datapath)
#define ODP_GET_LISTEN_MASK _IOW('O', 5, int)
#define ODP_SET_LISTEN_MASK _IOR('O', 6, int)
@@ -88,16 +85,48 @@
#define ODP_VPORT_SET _IOR('O', 22, struct odp_vport)
#define ODP_VPORT_DUMP _IOWR('O', 10, struct odp_vport)
#define ODP_FLOW_GET _IOWR('O', 13, struct odp_flow)
#define ODP_FLOW_PUT _IOWR('O', 14, struct odp_flow)
#define ODP_FLOW_DUMP _IOWR('O', 15, struct odp_flow_dump)
#define ODP_FLOW_FLUSH _IO('O', 16)
#define ODP_FLOW_DEL _IOWR('O', 17, struct odp_flow)
#define ODP_FLOW_NEW _IOWR('O', 13, struct odp_flow)
#define ODP_FLOW_DEL _IOWR('O', 14, struct odp_flow)
#define ODP_FLOW_GET _IOWR('O', 15, struct odp_flow)
#define ODP_FLOW_SET _IOWR('O', 16, struct odp_flow)
#define ODP_FLOW_DUMP _IOWR('O', 17, struct odp_flow)
#define ODP_FLOW_FLUSH _IO('O', 19)
#define ODP_EXECUTE _IOR('O', 18, struct odp_execute)
#define ODP_SET_SFLOW_PROBABILITY _IOR('O', 19, int)
#define ODP_GET_SFLOW_PROBABILITY _IOW('O', 20, int)
/**
* struct odp_datapath - header with basic information about a datapath.
* @dp_idx: Datapath index (-1 to make a request not specific to a datapath).
* @len: Length of this structure plus the Netlink attributes following it.
* @total_len: Total space available for kernel reply to request.
*
* Followed by &struct nlattr attributes, whose types are drawn from
* %ODP_DP_ATTR_*, up to a length of @len bytes including the &struct
* odp_datapath header.
*/
struct odp_datapath {
int32_t dp_idx;
uint32_t len;
uint32_t total_len;
};
enum odp_datapath_type {
ODP_DP_ATTR_UNSPEC,
ODP_DP_ATTR_NAME, /* name of dp_ifidx netdev */
ODP_DP_ATTR_STATS, /* struct odp_stats */
ODP_DP_ATTR_IPV4_FRAGS, /* 32-bit enum odp_frag_handling */
ODP_DP_ATTR_SAMPLING, /* 32-bit fraction of packets to sample. */
__ODP_DP_ATTR_MAX
};
#define ODP_DP_ATTR_MAX (__ODP_DP_ATTR_MAX - 1)
/* Values for ODP_DP_ATTR_IPV4_FRAGS. */
enum odp_frag_handling {
ODP_DP_FRAG_UNSPEC,
ODP_DP_FRAG_ZERO, /* Treat IP fragments as transport port 0. */
ODP_DP_FRAG_DROP /* Drop IP fragments. */
};
struct odp_stats {
uint64_t n_frags; /* Number of dropped IP fragments. */
@@ -210,10 +239,6 @@ enum {
struct odp_flow_stats {
uint64_t n_packets; /* Number of matched packets. */
uint64_t n_bytes; /* Number of matched bytes. */
uint64_t used_sec; /* Time last used, in system monotonic time. */
uint32_t used_nsec;
uint8_t tcp_flags;
uint8_t reserved;
};
enum odp_key_type {
@@ -271,42 +296,37 @@ struct odp_key_arp {
ovs_be16 arp_op;
};
struct odp_flow {
uint32_t dp_idx;
struct odp_flow_stats stats;
struct nlattr *key;
uint32_t key_len;
struct nlattr *actions;
uint32_t actions_len;
};
/* Flags for ODP_FLOW_PUT. */
#define ODPPF_CREATE (1 << 0) /* Allow creating a new flow. */
#define ODPPF_MODIFY (1 << 1) /* Allow modifying an existing flow. */
#define ODPPF_ZERO_STATS (1 << 2) /* Zero the stats of an existing flow. */
/* ODP_FLOW_PUT argument. */
struct odp_flow_put {
struct odp_flow flow;
uint32_t flags;
};
/* ODP_FLOW_DUMP argument.
/**
* struct odp_flow - header with basic information about a flow.
* @dp_idx: Datapath index.
* @len: Length of this structure plus the Netlink attributes following it.
* @total_len: Total space available for kernel reply to request.
*
* This is used to iterate through the flow table flow-by-flow. Each
* ODP_FLOW_DUMP call either stores a new odp_flow into 'flow' or stores 0 into
* flow->key_len to indicate that the end of the table has been reached, and
* updates 'state' in-place.
*
* Before the first call, zero 'state'. The format of 'state' is otherwise
* unspecified.
* Followed by &struct nlattr attributes, whose types are drawn from
* %ODP_FLOW_ATTR_*, up to a length of @len bytes including the &struct
* odp_flow header.
*/
struct odp_flow_dump {
struct odp_flow {
uint32_t nlmsg_flags;
uint32_t dp_idx;
struct odp_flow *flow;
uint32_t state[2];
uint32_t len;
uint32_t total_len;
};
enum odp_flow_type {
ODP_FLOW_ATTR_UNSPEC,
ODP_FLOW_ATTR_KEY, /* Sequence of ODP_KEY_ATTR_* attributes. */
ODP_FLOW_ATTR_ACTIONS, /* Sequence of nested ODPAT_* attributes. */
ODP_FLOW_ATTR_STATS, /* struct odp_flow_stats. */
ODP_FLOW_ATTR_TCP_FLAGS, /* 8-bit OR'd TCP flags. */
ODP_FLOW_ATTR_USED, /* u64 msecs last used in monotonic time. */
ODP_FLOW_ATTR_CLEAR, /* Flag to clear stats, tcp_flags, used. */
ODP_FLOW_ATTR_STATE, /* u64 state for ODP_FLOW_DUMP. */
__ODP_FLOW_ATTR_MAX
};
#define ODP_FLOW_ATTR_MAX (__ODP_FLOW_ATTR_MAX - 1)
/* Action types. */
enum odp_action_type {
ODPAT_UNSPEC,