diff options
Diffstat (limited to 'include/net/br.h')
| -rw-r--r-- | include/net/br.h | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/include/net/br.h b/include/net/br.h deleted file mode 100644 index bfa25b645..000000000 --- a/include/net/br.h +++ /dev/null @@ -1,330 +0,0 @@ -#include <linux/config.h> -/* - * Constants and structure definitions for the bridging code - */ - -#if !defined(One) -#define Zero 0 -#define One 1 -#endif /* !defined(One) */ - -#if !defined(TRUE) -#define FALSE 0 -#define TRUE 1 -#endif /* !defined(TRUE) */ - -/** port states. **/ -#define Disabled 0 /* (4.4 5) */ -#define Listening 1 /* (4.4.2) */ -#define Learning 2 /* (4.4.3) */ -#define Forwarding 3 /* (4 4 4) */ -#define Blocking 4 /* (4.4.1) */ - - -/* MAG Yich! Easiest way of giving a configurable number of ports - * If you want more than 32, change BR_MAX_PORTS and recompile brcfg! - */ -#define BR_MAX_PORTS (32) -#if CONFIG_BRIDGE_NUM_PORTS > BR_MAX_PORTS -#undef CONFIG_BRIDGE_NUM_PORTS -#define CONFIG_BRIDGE_NUM_PORTS BR_MAX_PORTS -#endif -#define No_of_ports CONFIG_BRIDGE_NUM_PORTS -/* arbitrary choice, to allow the code below to compile */ - -#define All_ports (No_of_ports + 1) - -/* - * We time out our entries in the FDB after this many seconds. - */ -#define FDB_TIMEOUT 20 /* JRP: 20s as NSC bridge code, was 300 for Linux */ - -/* - * the following defines are the initial values used when the - * bridge is booted. These may be overridden when this bridge is - * not the root bridge. These are the recommended default values - * from the 802.1d specification. - */ -#define BRIDGE_MAX_AGE 20 -#define BRIDGE_HELLO_TIME 2 -#define BRIDGE_FORWARD_DELAY 15 -#define HOLD_TIME 1 - -/* broacast/multicast storm limitation. This per source. */ -#define MAX_MCAST_PER_PERIOD 4 -#define MCAST_HOLD_TIME (10*HZ/100) - -#define Default_path_cost 10 - -/* - * minimum increment possible to avoid underestimating age, allows for BPDU - * transmission time - */ -#define Message_age_increment 1 - -#define No_port 0 -/* - * reserved value for Bridge's root port parameter indicating no root port, - * used when Bridge is the root - also used to indicate the source when - * a frame is being generated by a higher layer protocol on this host - */ - -/** Configuration BPDU Parameters (4.5.1) **/ - -typedef struct { - union { - struct { - unsigned short priority; - unsigned char ula[6]; - } p_u; - unsigned int id[2]; - } bi; -} bridge_id_t; - -#define BRIDGE_PRIORITY bi.p_u.priority -#define BRIDGE_ID_ULA bi.p_u.ula -#define BRIDGE_ID bi.id - -/* JRP: on the network the flags field is between "type" and "root_id" - * this is unfortunated! To make the code portable to a RISC machine - * the pdus are now massaged a little bit for processing - */ -#define TOPOLOGY_CHANGE 0x01 -#define TOPOLOGY_CHANGE_ACK 0x80 -#define BRIDGE_BPDU_8021_CONFIG_SIZE 35 /* real size */ -#define BRIDGE_BPDU_8021_CONFIG_FLAG_OFFSET 4 -#define BRIDGE_BPDU_8021_PROTOCOL_ID 0 -#define BRIDGE_BPDU_8021_PROTOCOL_VERSION_ID 0 -#define BRIDGE_LLC1_HS 3 -#define BRIDGE_LLC1_DSAP 0x42 -#define BRIDGE_LLC1_SSAP 0x42 -#define BRIDGE_LLC1_CTRL 0x03 - -typedef struct { - unsigned short protocol_id; - unsigned char protocol_version_id; - unsigned char type; - bridge_id_t root_id; /* (4.5.1.1) */ - unsigned int root_path_cost; /* (4.5.1.2) */ - bridge_id_t bridge_id; /* (4.5.1.3) */ - unsigned short port_id; /* (4.5.1.4) */ - unsigned short message_age; /* (4.5.1.5) */ - unsigned short max_age; /* (4.5.1.6) */ - unsigned short hello_time; /* (4.5.1.7) */ - unsigned short forward_delay; /* (4.5.1.8) */ - unsigned char top_change_ack; - unsigned char top_change; -} Config_bpdu; - -#ifdef __LITTLE_ENDIAN -#define config_bpdu_hton(config_bpdu) \ - (config_bpdu)->root_path_cost = htonl((config_bpdu)->root_path_cost); \ - (config_bpdu)->port_id = htons((config_bpdu)->port_id); \ - (config_bpdu)->message_age = htons((config_bpdu)->message_age); \ - (config_bpdu)->max_age = htons((config_bpdu)->max_age); \ - (config_bpdu)->hello_time = htons((config_bpdu)->hello_time); \ - (config_bpdu)->forward_delay = htons((config_bpdu)->forward_delay); -#else -#define config_bpdu_hton(config_bpdu) -#endif -#define config_bpdu_ntoh config_bpdu_hton - - -/** Topology Change Notification BPDU Parameters (4.5.2) **/ - -typedef struct { - unsigned short protocol_id; - unsigned char protocol_version_id; - unsigned char type; -} Tcn_bpdu; - -#define BPDU_TYPE_CONFIG 0 -#define BPDU_TYPE_TOPO_CHANGE 128 - -/** Bridge Parameters (4.5.3) **/ -typedef struct { - bridge_id_t designated_root; /* (4.5.3.1) */ - unsigned int root_path_cost; /* (4.5.3.2) */ - unsigned int root_port; /* (4.5.3.3) */ - unsigned short max_age; /* (4.5.3.4) */ - unsigned short hello_time; /* (4.5.3.5) */ - unsigned short forward_delay; /* (4.5.3.6) */ - bridge_id_t bridge_id; /* (4.5.3.7) */ - unsigned short bridge_max_age; /* (4.5.3.8) */ - unsigned short bridge_hello_time; /* (4.5.3.9) */ - unsigned short bridge_forward_delay; /* (4.5.3.10) */ - unsigned int top_change_detected; /* (4.5.3.11) */ - unsigned int top_change; /* (4.5.3.12) */ - unsigned short topology_change_time; /* (4.5.3.13) */ - unsigned short hold_time; /* (4.5.3.14) */ - unsigned int instance; -} Bridge_data; - -/** Port Parameters (4.5.5) **/ -typedef struct { - unsigned short port_id; /* (4.5.5.1) */ - unsigned int state; /* (4.5.5.2) */ - unsigned int path_cost; /* (4.5.5.3) */ - bridge_id_t designated_root; /* (4.5.5.4) */ - unsigned int designated_cost; /* (4.5.5.5) */ - bridge_id_t designated_bridge; /* (4.5.5.6) */ - unsigned short designated_port; /* (4.5.5.7) */ - unsigned int top_change_ack; /* (4.5.5.8) */ - unsigned int config_pending; /* (4.5.5.9) */ - bridge_id_t ifmac; - char ifname[IFNAMSIZ]; /* Make life easier for brcfg */ - struct net_device *dev; - struct fdb *fdb; /* head of per port fdb chain */ -} Port_data; - - - -/** types to support timers for this pseudo-implementation. **/ -typedef struct { - unsigned int active; /* timer in use. */ - unsigned int value; /* current value of timer, - * counting up. */ -} Timer; - -struct fdb { - unsigned char ula[6]; - unsigned char pad[2]; - unsigned short port; - unsigned int timer; - unsigned short flags; -#define FDB_ENT_VALID 0x01 - unsigned short mcast_count; - unsigned int mcast_timer; /* oldest xxxxxcast */ - -/* AVL tree of all addresses, sorted by address */ - short fdb_avl_height; - struct fdb *fdb_avl_left; - struct fdb *fdb_avl_right; -/* linked list of addresses for each port */ - struct fdb *fdb_next; -}; - -/* data returned on BRCMD_DISPLAY_FDB */ -struct fdb_info { - unsigned char ula[6]; - unsigned char port; - unsigned char flags; - unsigned int timer; -}; -struct fdb_info_hdr { - int copied; /* nb of entries copied to user */ - int not_copied; /* when user buffer is too small */ - int cmd_time; -}; - -#define IS_BRIDGED 0x2e - - -#define BR_MAX_PROTOCOLS 32 -#define BR_MAX_PROT_STATS BR_MAX_PROTOCOLS - -/* policy values for policy field */ -#define BR_ACCEPT 1 -#define BR_REJECT 0 - -/* JRP: extra statistics for debug */ -typedef struct { - /* br_receive_frame counters */ - int port_disable_up_stack; - int rcv_bpdu; - int notForwarding; - int forwarding_up_stack; - int unknown_state; - - /* br_tx_frame counters */ - int port_disable; - int port_not_disable; - - /* br_forward counters */ - int local_multicast; - int forwarded_multicast; /* up stack as well */ - int flood_unicast; - int aged_flood_unicast; - int forwarded_unicast; - int forwarded_unicast_up_stack; - int forwarded_ip_up_stack; - int forwarded_ip_up_stack_lie; /* received on alternate device */ - int arp_for_local_mac; - int drop_same_port; - int drop_same_port_aged; - int drop_multicast; -} br_stats_counter; - -struct br_stat { - unsigned int flags; - Bridge_data bridge_data; - unsigned int policy; - unsigned int exempt_protocols; - unsigned short protocols[BR_MAX_PROTOCOLS]; - unsigned short prot_id[BR_MAX_PROT_STATS]; /* Protocol encountered */ - unsigned int prot_counter[BR_MAX_PROT_STATS]; /* How many packets ? */ - br_stats_counter packet_cnts; - unsigned int num_ports; - Port_data port_data[BR_MAX_PORTS + 1]; -}; - -/* defined flags for br_stat.flags */ -#define BR_UP 0x0001 /* bridging enabled */ -#define BR_DEBUG 0x0002 /* debugging enabled */ -#define BR_PROT_STATS 0x0004 /* protocol statistics enabled */ -#define BR_STP_DISABLED 0x0008 /* Spanning tree protocol disabled */ - -struct br_cf { - unsigned int cmd; - unsigned int arg1; - unsigned int arg2; -}; - -/* defined cmds */ -#define BRCMD_BRIDGE_ENABLE 1 -#define BRCMD_BRIDGE_DISABLE 2 -#define BRCMD_PORT_ENABLE 3 /* arg1 = port */ -#define BRCMD_PORT_DISABLE 4 /* arg1 = port */ -#define BRCMD_SET_BRIDGE_PRIORITY 5 /* arg1 = priority */ -#define BRCMD_SET_PORT_PRIORITY 6 /* arg1 = port, arg2 = priority */ -#define BRCMD_SET_PATH_COST 7 /* arg1 = port, arg2 = cost */ -#define BRCMD_DISPLAY_FDB 8 -#define BRCMD_ENABLE_DEBUG 9 -#define BRCMD_DISABLE_DEBUG 10 -#define BRCMD_SET_POLICY 11 /* arg1 = default policy (1==bridge all) */ -#define BRCMD_EXEMPT_PROTOCOL 12 /* arg1 = protocol (see net/if_ether.h) */ -#define BRCMD_ENABLE_PROT_STATS 13 -#define BRCMD_DISABLE_PROT_STATS 14 -#define BRCMD_ZERO_PROT_STATS 15 -#define BRCMD_TOGGLE_STP 16 -#define BRCMD_IF_ENABLE 17 /* arg1 = if_index */ -#define BRCMD_IF_DISABLE 18 /* arg1 = if_index */ -#define BRCMD_SET_IF_PRIORITY 19 /* arg1 = if_index, arg2 = priority */ -#define BRCMD_SET_IF_PATH_COST 20 /* arg1 = if_index, arg2 = cost */ - -/* prototypes of exported bridging functions... */ - -#ifdef __KERNEL__ -void br_init(void); -int br_receive_frame(struct sk_buff *skb); /* 3.5 */ -int br_tx_frame(struct sk_buff *skb); -int brg_init(void); -int br_ioctl(unsigned int cmd, void *arg); -void requeue_fdb(struct fdb *node, int new_port); - -struct fdb *br_avl_find_addr(unsigned char addr[6]); -struct fdb *br_avl_insert (struct fdb * new_node); -void sprintf_avl (char **pbuffer, struct fdb * tree, off_t *pos,int* len, off_t offset, int length); -void br_avl_delete_by_port(int port); -int br_call_bridge(struct sk_buff *skb, unsigned short type); -void br_spacedevice_register(void); - -/* externs */ - -extern struct br_stat br_stats; -extern Port_data port_info[]; - -#endif - - - |