mirror of
https://github.com/Ysurac/openmptcprouter-feeds.git
synced 2025-03-09 15:40:03 +00:00
331 lines
9.3 KiB
C
331 lines
9.3 KiB
C
/*
|
|
* sfe.h
|
|
* Shortcut forwarding engine.
|
|
*
|
|
* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
|
|
* Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifndef __SFE_H
|
|
#define __SFE_H
|
|
|
|
/*
|
|
* Maximum number of accelerated IPv4 or IPv6 connections
|
|
*/
|
|
#if defined(SFE_MEM_PROFILE_LOW)
|
|
#define SFE_MAX_CONNECTION_NUM 512
|
|
#elif defined(SFE_MEM_PROFILE_MEDIUM)
|
|
#define SFE_MAX_CONNECTION_NUM 2048
|
|
#else
|
|
#define SFE_MAX_CONNECTION_NUM 4096
|
|
#endif
|
|
|
|
#define SFE_L2_PARSE_FLAGS_PPPOE_INGRESS 0x01 /* Indicates presence of a valid PPPoE header */
|
|
|
|
/**
|
|
* SAWF_metadata information placement in mark field.
|
|
*/
|
|
#define SFE_SAWF_VALID_TAG 0xAA
|
|
#define SFE_SAWF_TAG_SHIFT 0x18
|
|
#define SFE_SAWF_SERVICE_CLASS_SHIFT 0x10
|
|
#define SFE_SAWF_SERVICE_CLASS_MASK 0xff
|
|
#define SFE_SAWF_MSDUQ_MASK 0xffff
|
|
|
|
/**
|
|
* SAWF_metadata extraction.
|
|
*/
|
|
#define SFE_GET_SAWF_TAG(x) (x>>SFE_SAWF_TAG_SHIFT)
|
|
#define SFE_GET_SAWF_SERVICE_CLASS(x) ((x>>SFE_SAWF_SERVICE_CLASS_SHIFT) & SFE_SAWF_SERVICE_CLASS_MASK)
|
|
#define SFE_GET_SAWF_MSDUQ(x) (x & SFE_SAWF_MSDUQ_MASK)
|
|
#define SFE_SAWF_TAG_IS_VALID(x) ((x == SFE_SAWF_VALID_TAG) ? true : false)
|
|
|
|
/*
|
|
* IPv6 address structure
|
|
*/
|
|
struct sfe_ipv6_addr {
|
|
__be32 addr[4];
|
|
};
|
|
|
|
typedef union {
|
|
__be32 ip;
|
|
struct sfe_ipv6_addr ip6[1];
|
|
} sfe_ip_addr_t;
|
|
|
|
typedef enum sfe_sync_reason {
|
|
SFE_SYNC_REASON_STATS, /* Sync is to synchronize stats */
|
|
SFE_SYNC_REASON_FLUSH, /* Sync is to flush a entry */
|
|
SFE_SYNC_REASON_DESTROY /* Sync is to destroy a entry(requested by connection manager) */
|
|
} sfe_sync_reason_t;
|
|
|
|
/*
|
|
* VLAN header (aka VLAN tag)
|
|
*/
|
|
struct sfe_vlan_hdr {
|
|
u16 tpid; /* Tag Protocol Identifier */
|
|
u16 tci; /* Tag Control Information */
|
|
};
|
|
|
|
/*
|
|
* Structure used to store L2 information
|
|
*/
|
|
struct sfe_l2_info {
|
|
u16 parse_flags; /* Flags indicating L2.5 headers presence */
|
|
u16 pppoe_session_id; /* PPPOE header offset */
|
|
u16 protocol; /* L3 Protocol */
|
|
struct sfe_vlan_hdr vlan_hdr[SFE_MAX_VLAN_DEPTH];
|
|
/* VLAN tag(s) of ingress packet */
|
|
u8 vlan_hdr_cnt; /* Number of VLAN tags in the ingress packet */
|
|
};
|
|
|
|
/*
|
|
* Structure used to sync connection stats/state back within the system.
|
|
*
|
|
* NOTE: The addresses here are NON-NAT addresses, i.e. the true endpoint addressing.
|
|
* 'src' is the creator of the connection.
|
|
*/
|
|
struct sfe_connection_sync {
|
|
struct net_device *src_dev;
|
|
struct net_device *dest_dev;
|
|
int is_v6; /* Is it for ipv6? */
|
|
int protocol; /* IP protocol number (IPPROTO_...) */
|
|
sfe_ip_addr_t src_ip; /* Non-NAT source address, i.e. the creator of the connection */
|
|
sfe_ip_addr_t src_ip_xlate; /* NATed source address */
|
|
__be16 src_port; /* Non-NAT source port */
|
|
__be16 src_port_xlate; /* NATed source port */
|
|
sfe_ip_addr_t dest_ip; /* Non-NAT destination address, i.e. to whom the connection was created */
|
|
sfe_ip_addr_t dest_ip_xlate; /* NATed destination address */
|
|
__be16 dest_port; /* Non-NAT destination port */
|
|
__be16 dest_port_xlate; /* NATed destination port */
|
|
u32 src_td_max_window;
|
|
u32 src_td_end;
|
|
u32 src_td_max_end;
|
|
u64 src_packet_count;
|
|
u64 src_byte_count;
|
|
u32 src_new_packet_count;
|
|
u32 src_new_byte_count;
|
|
u32 dest_td_max_window;
|
|
u32 dest_td_end;
|
|
u32 dest_td_max_end;
|
|
u64 dest_packet_count;
|
|
u64 dest_byte_count;
|
|
u32 dest_new_packet_count;
|
|
u32 dest_new_byte_count;
|
|
u32 reason; /* reason for stats sync message, i.e. destroy, flush, period sync */
|
|
u64 delta_jiffies; /* Time to be added to the current timeout to keep the connection alive */
|
|
};
|
|
|
|
/*
|
|
* Expose the hook for the receive processing.
|
|
*/
|
|
extern int (*athrs_fast_nat_recv)(struct sk_buff *skb);
|
|
|
|
/*
|
|
* Expose what should be a static flag in the TCP connection tracker.
|
|
*/
|
|
extern int nf_ct_tcp_no_window_check;
|
|
|
|
/*
|
|
* Check the fast transmit feasibility.
|
|
*/
|
|
bool sfe_fast_xmit_check(struct sk_buff *skb, netdev_features_t features);
|
|
|
|
/*
|
|
* This callback will be called in a timer
|
|
* at 100 times per second to sync stats back to
|
|
* Linux connection track.
|
|
*
|
|
* A RCU lock is taken to prevent this callback
|
|
* from unregistering.
|
|
*/
|
|
typedef void (*sfe_sync_rule_callback_t)(struct sfe_connection_sync *);
|
|
typedef void (*sfe_ipv4_many_sync_callback_t)(struct sfe_ipv4_msg *msg);
|
|
typedef void (*sfe_ipv6_many_sync_callback_t)(struct sfe_ipv6_msg *msg);
|
|
|
|
/*
|
|
* IPv4 APIs used by connection manager
|
|
*/
|
|
int sfe_ipv4_recv(struct net_device *dev, struct sk_buff *skb, struct sfe_l2_info *l2_info, bool tun_outer);
|
|
int sfe_ipv4_create_rule(struct sfe_ipv4_rule_create_msg *msg);
|
|
void sfe_ipv4_destroy_rule(struct sfe_ipv4_rule_destroy_msg *msg);
|
|
void sfe_ipv4_destroy_all_rules_for_dev(struct net_device *dev);
|
|
void sfe_ipv4_register_sync_rule_callback(sfe_sync_rule_callback_t callback);
|
|
void sfe_ipv4_update_rule(struct sfe_ipv4_rule_create_msg *msg);
|
|
bool sfe_dev_has_hw_csum(struct net_device *dev);
|
|
|
|
bool sfe_ipv4_sync_invoke(uint16_t index);
|
|
void sfe_ipv4_register_many_sync_callback(sfe_ipv4_many_sync_callback_t cb);
|
|
void sfe_ipv4_stats_convert(struct sfe_ipv4_conn_sync *sync_msg, struct sfe_connection_sync *sis);
|
|
#ifdef SFE_SUPPORT_IPV6
|
|
/*
|
|
* IPv6 APIs used by connection manager
|
|
*/
|
|
int sfe_ipv6_recv(struct net_device *dev, struct sk_buff *skb, struct sfe_l2_info *l2_info, bool tun_outer);
|
|
int sfe_ipv6_create_rule(struct sfe_ipv6_rule_create_msg *msg);
|
|
void sfe_ipv6_destroy_rule(struct sfe_ipv6_rule_destroy_msg *msg);
|
|
void sfe_ipv6_destroy_all_rules_for_dev(struct net_device *dev);
|
|
void sfe_ipv6_register_sync_rule_callback(sfe_sync_rule_callback_t callback);
|
|
void sfe_ipv6_update_rule(struct sfe_ipv6_rule_create_msg *msg);
|
|
bool sfe_ipv6_sync_invoke(uint16_t index);
|
|
void sfe_ipv6_register_many_sync_callback(sfe_ipv6_many_sync_callback_t cb);
|
|
void sfe_ipv6_stats_convert(struct sfe_ipv6_conn_sync *sync_msg, struct sfe_connection_sync *sis);
|
|
#else
|
|
static inline int sfe_ipv6_recv(struct net_device *dev, struct sk_buff *skb, struct sfe_l2_info *l2_info, bool tun_outer)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sfe_ipv6_create_rule(struct sfe_ipv6_rule_create_msg *msg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sfe_ipv6_destroy_rule(struct sfe_ipv6_rule_destroy_msg *msg)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline void sfe_ipv6_destroy_all_rules_for_dev(struct net_device *dev)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline void sfe_ipv6_register_sync_rule_callback(sfe_sync_rule_callback_t callback)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline void sfe_ipv6_update_rule(struct sfe_ipv6_rule_create_msg *msg)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline bool sfe_ipv6_sync_invoke(uint16_t index)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline void sfe_ipv6_register_many_sync_callback(sfe_ipv6_many_sync_callback_t cb)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline void sfe_ipv6_stats_convert(struct sfe_ipv6_conn_sync *sync_msg, struct sfe_connection_sync *sis)
|
|
{
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* sfe_ipv6_addr_equal()
|
|
* compare ipv6 address
|
|
*
|
|
* return: 1, equal; 0, no equal
|
|
*/
|
|
static inline int sfe_ipv6_addr_equal(struct sfe_ipv6_addr *a,
|
|
struct sfe_ipv6_addr *b)
|
|
{
|
|
return a->addr[0] == b->addr[0] &&
|
|
a->addr[1] == b->addr[1] &&
|
|
a->addr[2] == b->addr[2] &&
|
|
a->addr[3] == b->addr[3];
|
|
}
|
|
|
|
/*
|
|
* sfe_ipv4_addr_equal()
|
|
* compare ipv4 address
|
|
*
|
|
* return: 1, equal; 0, no equal
|
|
*/
|
|
#define sfe_ipv4_addr_equal(a, b) ((u32)(a) == (u32)(b))
|
|
|
|
/*
|
|
* sfe_addr_equal()
|
|
* compare ipv4 or ipv6 address
|
|
*
|
|
* return: 1, equal; 0, no equal
|
|
*/
|
|
static inline int sfe_addr_equal(sfe_ip_addr_t *a,
|
|
sfe_ip_addr_t *b, int is_v4)
|
|
{
|
|
return is_v4 ? sfe_ipv4_addr_equal(a->ip, b->ip) : sfe_ipv6_addr_equal(a->ip6, b->ip6);
|
|
}
|
|
|
|
/*
|
|
* sfe_l2_parse_flag_set()
|
|
* Set L2 parse flag
|
|
*/
|
|
static inline void sfe_l2_parse_flag_set(struct sfe_l2_info *l2_info, u16 flag)
|
|
{
|
|
l2_info->parse_flags |= flag;
|
|
}
|
|
|
|
/*
|
|
* sfe_l2_parse_flag_get()
|
|
* Get L2 parse flag
|
|
*/
|
|
static inline u16 sfe_l2_parse_flag_get(struct sfe_l2_info *l2_info)
|
|
{
|
|
return l2_info->parse_flags;
|
|
}
|
|
|
|
/*
|
|
* sfe_l2_parse_flag_check()
|
|
* Check L2 parse flag
|
|
*/
|
|
static inline bool sfe_l2_parse_flag_check(struct sfe_l2_info *l2_info, u16 flag)
|
|
{
|
|
return !!(l2_info->parse_flags & flag);
|
|
}
|
|
|
|
/*
|
|
* sfe_l2_pppoe_session_id_get()
|
|
* Get PPPPoE session ID from l2_info
|
|
*/
|
|
static inline u16 sfe_l2_pppoe_session_id_get(struct sfe_l2_info *l2_info)
|
|
{
|
|
return l2_info->pppoe_session_id;
|
|
}
|
|
|
|
/*
|
|
* sfe_l2_pppoe_session_id_set()
|
|
* Set PPPoE session ID to l2_info
|
|
*/
|
|
static inline void sfe_l2_pppoe_session_id_set(struct sfe_l2_info *l2_info, u16 session_id)
|
|
{
|
|
l2_info->pppoe_session_id = session_id;
|
|
}
|
|
|
|
/*
|
|
* sfe_l2_protocol_get()
|
|
* Get L2 protocol
|
|
*/
|
|
static inline u16 sfe_l2_protocol_get(struct sfe_l2_info *l2_info)
|
|
{
|
|
return l2_info->protocol;
|
|
}
|
|
|
|
/*
|
|
* sfe_l2_protocol_set()
|
|
* Set L2 protocol
|
|
*/
|
|
static inline void sfe_l2_protocol_set(struct sfe_l2_info *l2_info, u16 proto)
|
|
{
|
|
l2_info->protocol = proto;
|
|
}
|
|
|
|
int sfe_init_if(void);
|
|
void sfe_exit_if(void);
|
|
|
|
#endif /* __SFE_H */
|