diff options
| -rw-r--r-- | include/linux/atmlec.h | 119 | ||||
| -rw-r--r-- | net/atm/lec.h | 172 | ||||
| -rw-r--r-- | net/atm/lec_arpc.h | 148 |
3 files changed, 235 insertions, 204 deletions
diff --git a/include/linux/atmlec.h b/include/linux/atmlec.h index f267f24..6f5a1ba 100644 --- a/include/linux/atmlec.h +++ b/include/linux/atmlec.h @@ -1,9 +1,7 @@ /* - * - * ATM Lan Emulation Daemon vs. driver interface - * - * mkiiskila@yahoo.com + * ATM Lan Emulation Daemon driver interface * + * Marko Kiiskila <mkiiskila@yahoo.com> */ #ifndef _ATMLEC_H_ @@ -13,76 +11,87 @@ #include <linux/atmioc.h> #include <linux/atm.h> #include <linux/if_ether.h> + /* ATM lec daemon control socket */ -#define ATMLEC_CTRL _IO('a',ATMIOC_LANE) -#define ATMLEC_DATA _IO('a',ATMIOC_LANE+1) -#define ATMLEC_MCAST _IO('a',ATMIOC_LANE+2) +#define ATMLEC_CTRL _IO('a', ATMIOC_LANE) +#define ATMLEC_DATA _IO('a', ATMIOC_LANE+1) +#define ATMLEC_MCAST _IO('a', ATMIOC_LANE+2) /* Maximum number of LEC interfaces (tweakable) */ #define MAX_LEC_ITF 48 -/* From the total of MAX_LEC_ITF, last NUM_TR_DEVS are reserved for Token Ring. +/* + * From the total of MAX_LEC_ITF, last NUM_TR_DEVS are reserved for Token Ring. * E.g. if MAX_LEC_ITF = 48 and NUM_TR_DEVS = 8, then lec0-lec39 are for * Ethernet ELANs and lec40-lec47 are for Token Ring ELANS. */ #define NUM_TR_DEVS 8 -typedef enum { - l_set_mac_addr, l_del_mac_addr, - l_svc_setup, - l_addr_delete, l_topology_change, - l_flush_complete, l_arp_update, - l_narp_req, /* LANE2 mandates the use of this */ - l_config, l_flush_tran_id, - l_set_lecid, l_arp_xmt, - l_rdesc_arp_xmt, - l_associate_req, - l_should_bridge /* should we bridge this MAC? */ +typedef enum { + l_set_mac_addr, + l_del_mac_addr, + l_svc_setup, + l_addr_delete, + l_topology_change, + l_flush_complete, + l_arp_update, + l_narp_req, /* LANE2 mandates the use of this */ + l_config, + l_flush_tran_id, + l_set_lecid, + l_arp_xmt, + l_rdesc_arp_xmt, + l_associate_req, + l_should_bridge /* should we bridge this MAC? */ } atmlec_msg_type; #define ATMLEC_MSG_TYPE_MAX l_should_bridge struct atmlec_config_msg { - unsigned int maximum_unknown_frame_count; - unsigned int max_unknown_frame_time; - unsigned short max_retry_count; - unsigned int aging_time; - unsigned int forward_delay_time; - unsigned int arp_response_time; - unsigned int flush_timeout; - unsigned int path_switching_delay; - unsigned int lane_version; /* LANE2: 1 for LANEv1, 2 for LANEv2 */ - int mtu; - int is_proxy; + unsigned int maximum_unknown_frame_count; + unsigned int max_unknown_frame_time; + unsigned short max_retry_count; + unsigned int aging_time; + unsigned int forward_delay_time; + unsigned int arp_response_time; + unsigned int flush_timeout; + unsigned int path_switching_delay; + unsigned int lane_version; /* LANE2: 1 for LANEv1, 2 for LANEv2 */ + int mtu; + int is_proxy; }; - + struct atmlec_msg { - atmlec_msg_type type; - int sizeoftlvs; /* LANE2: if != 0, tlvs follow */ - union { - struct { - unsigned char mac_addr[ETH_ALEN]; - unsigned char atm_addr[ATM_ESA_LEN]; - unsigned int flag;/* Topology_change flag, - remoteflag, permanent flag, - lecid, transaction id */ - unsigned int targetless_le_arp; /* LANE2 */ - unsigned int no_source_le_narp; /* LANE2 */ - } normal; - struct atmlec_config_msg config; - struct { - uint16_t lec_id; /* requestor lec_id */ - uint32_t tran_id; /* transaction id */ - unsigned char mac_addr[ETH_ALEN]; /* dst mac addr */ - unsigned char atm_addr[ATM_ESA_LEN]; /* reqestor ATM addr */ - } proxy; - /* For mapping LE_ARP requests to responses. Filled by */ - } content; /* zeppelin, returned by kernel. Used only when proxying */ + atmlec_msg_type type; + int sizeoftlvs; /* LANE2: if != 0, tlvs follow */ + union { + struct { + unsigned char mac_addr[ETH_ALEN]; + unsigned char atm_addr[ATM_ESA_LEN]; + unsigned int flag; /* + * Topology_change flag, + * remoteflag, permanent flag, + * lecid, transaction id + */ + unsigned int targetless_le_arp; /* LANE2 */ + unsigned int no_source_le_narp; /* LANE2 */ + } normal; + struct atmlec_config_msg config; + struct { + uint16_t lec_id; /* requestor lec_id */ + uint32_t tran_id; /* transaction id */ + unsigned char mac_addr[ETH_ALEN]; /* dst mac addr */ + unsigned char atm_addr[ATM_ESA_LEN]; /* reqestor ATM addr */ + } proxy; /* + * For mapping LE_ARP requests to responses. Filled by + * zeppelin, returned by kernel. Used only when proxying + */ + } content; } __ATM_API_ALIGN; struct atmlec_ioc { - int dev_num; - unsigned char atm_addr[ATM_ESA_LEN]; - unsigned char receive; /* 1= receive vcc, 0 = send vcc */ + int dev_num; + unsigned char atm_addr[ATM_ESA_LEN]; + unsigned char receive; /* 1= receive vcc, 0 = send vcc */ }; #endif /* _ATMLEC_H_ */ diff --git a/net/atm/lec.h b/net/atm/lec.h index c22a8bf..c700472 100644 --- a/net/atm/lec.h +++ b/net/atm/lec.h @@ -1,14 +1,13 @@ /* - * * Lan Emulation client header file * - * Marko Kiiskila mkiiskila@yahoo.com - * + * Marko Kiiskila <mkiiskila@yahoo.com> */ #ifndef _LEC_H_ #define _LEC_H_ +#include <linux/config.h> #include <linux/atmdev.h> #include <linux/netdevice.h> #include <linux/atmlec.h> @@ -16,18 +15,18 @@ #define LEC_HEADER_LEN 16 struct lecdatahdr_8023 { - unsigned short le_header; - unsigned char h_dest[ETH_ALEN]; - unsigned char h_source[ETH_ALEN]; - unsigned short h_type; + unsigned short le_header; + unsigned char h_dest[ETH_ALEN]; + unsigned char h_source[ETH_ALEN]; + unsigned short h_type; }; struct lecdatahdr_8025 { - unsigned short le_header; - unsigned char ac_pad; - unsigned char fc; - unsigned char h_dest[ETH_ALEN]; - unsigned char h_source[ETH_ALEN]; + unsigned short le_header; + unsigned char ac_pad; + unsigned char fc; + unsigned char h_dest[ETH_ALEN]; + unsigned char h_source[ETH_ALEN]; }; #define LEC_MINIMUM_8023_SIZE 62 @@ -44,17 +43,18 @@ struct lecdatahdr_8025 { * */ struct lane2_ops { - int (*resolve)(struct net_device *dev, u8 *dst_mac, int force, - u8 **tlvs, u32 *sizeoftlvs); - int (*associate_req)(struct net_device *dev, u8 *lan_dst, - u8 *tlvs, u32 sizeoftlvs); - void (*associate_indicator)(struct net_device *dev, u8 *mac_addr, - u8 *tlvs, u32 sizeoftlvs); + int (*resolve) (struct net_device *dev, u8 *dst_mac, int force, + u8 **tlvs, u32 *sizeoftlvs); + int (*associate_req) (struct net_device *dev, u8 *lan_dst, + u8 *tlvs, u32 sizeoftlvs); + void (*associate_indicator) (struct net_device *dev, u8 *mac_addr, + u8 *tlvs, u32 sizeoftlvs); }; /* * ATM LAN Emulation supports both LLC & Dix Ethernet EtherType * frames. + * * 1. Dix Ethernet EtherType frames encoded by placing EtherType * field in h_type field. Data follows immediatelly after header. * 2. LLC Data frames whose total length, including LLC field and data, @@ -70,72 +70,88 @@ struct lane2_ops { #define LEC_ARP_TABLE_SIZE 16 struct lec_priv { - struct net_device_stats stats; - unsigned short lecid; /* Lecid of this client */ - struct lec_arp_table *lec_arp_empty_ones; - /* Used for storing VCC's that don't have a MAC address attached yet */ - struct lec_arp_table *lec_arp_tables[LEC_ARP_TABLE_SIZE]; - /* Actual LE ARP table */ - struct lec_arp_table *lec_no_forward; - /* Used for storing VCC's (and forward packets from) which are to - age out by not using them to forward packets. - This is because to some LE clients there will be 2 VCCs. Only - one of them gets used. */ - struct lec_arp_table *mcast_fwds; - /* With LANEv2 it is possible that BUS (or a special multicast server) - establishes multiple Multicast Forward VCCs to us. This list - collects all those VCCs. LANEv1 client has only one item in this - list. These entries are not aged out. */ - spinlock_t lec_arp_lock; - struct atm_vcc *mcast_vcc; /* Default Multicast Send VCC */ - struct atm_vcc *lecd; - struct timer_list lec_arp_timer; - /* C10 */ - unsigned int maximum_unknown_frame_count; -/* Within the period of time defined by this variable, the client will send - no more than C10 frames to BUS for a given unicast destination. (C11) */ - unsigned long max_unknown_frame_time; -/* If no traffic has been sent in this vcc for this period of time, - vcc will be torn down (C12)*/ - unsigned long vcc_timeout_period; -/* An LE Client MUST not retry an LE_ARP_REQUEST for a - given frame's LAN Destination more than maximum retry count times, - after the first LEC_ARP_REQUEST (C13)*/ - unsigned short max_retry_count; -/* Max time the client will maintain an entry in its arp cache in - absence of a verification of that relationship (C17)*/ - unsigned long aging_time; -/* Max time the client will maintain an entry in cache when - topology change flag is true (C18) */ - unsigned long forward_delay_time; -/* Topology change flag (C19)*/ - int topology_change; -/* Max time the client expects an LE_ARP_REQUEST/LE_ARP_RESPONSE - cycle to take (C20)*/ - unsigned long arp_response_time; -/* Time limit ot wait to receive an LE_FLUSH_RESPONSE after the - LE_FLUSH_REQUEST has been sent before taking recover action. (C21)*/ - unsigned long flush_timeout; -/* The time since sending a frame to the bus after which the - LE Client may assume that the frame has been either discarded or - delivered to the recipient (C22) */ - unsigned long path_switching_delay; + struct net_device_stats stats; + unsigned short lecid; /* Lecid of this client */ + struct lec_arp_table *lec_arp_empty_ones; + /* Used for storing VCC's that don't have a MAC address attached yet */ + struct lec_arp_table *lec_arp_tables[LEC_ARP_TABLE_SIZE]; + /* Actual LE ARP table */ + struct lec_arp_table *lec_no_forward; + /* + * Used for storing VCC's (and forward packets from) which are to + * age out by not using them to forward packets. + * This is because to some LE clients there will be 2 VCCs. Only + * one of them gets used. + */ + struct lec_arp_table *mcast_fwds; + /* + * With LANEv2 it is possible that BUS (or a special multicast server) + * establishes multiple Multicast Forward VCCs to us. This list + * collects all those VCCs. LANEv1 client has only one item in this + * list. These entries are not aged out. + */ + spinlock_t lec_arp_lock; + struct atm_vcc *mcast_vcc; /* Default Multicast Send VCC */ + struct atm_vcc *lecd; + struct timer_list lec_arp_timer; /* C10 */ + unsigned int maximum_unknown_frame_count; + /* + * Within the period of time defined by this variable, the client will send + * no more than C10 frames to BUS for a given unicast destination. (C11) + */ + unsigned long max_unknown_frame_time; + /* + * If no traffic has been sent in this vcc for this period of time, + * vcc will be torn down (C12) + */ + unsigned long vcc_timeout_period; + /* + * An LE Client MUST not retry an LE_ARP_REQUEST for a + * given frame's LAN Destination more than maximum retry count times, + * after the first LEC_ARP_REQUEST (C13) + */ + unsigned short max_retry_count; + /* + * Max time the client will maintain an entry in its arp cache in + * absence of a verification of that relationship (C17) + */ + unsigned long aging_time; + /* + * Max time the client will maintain an entry in cache when + * topology change flag is true (C18) + */ + unsigned long forward_delay_time; /* Topology change flag (C19) */ + int topology_change; + /* + * Max time the client expects an LE_ARP_REQUEST/LE_ARP_RESPONSE + * cycle to take (C20) + */ + unsigned long arp_response_time; + /* + * Time limit ot wait to receive an LE_FLUSH_RESPONSE after the + * LE_FLUSH_REQUEST has been sent before taking recover action. (C21) + */ + unsigned long flush_timeout; + /* The time since sending a frame to the bus after which the + * LE Client may assume that the frame has been either discarded or + * delivered to the recipient (C22) + */ + unsigned long path_switching_delay; - u8 *tlvs; /* LANE2: TLVs are new */ - u32 sizeoftlvs; /* The size of the tlv array in bytes */ - int lane_version; /* LANE2 */ - int itfnum; /* e.g. 2 for lec2, 5 for lec5 */ - struct lane2_ops *lane2_ops; /* can be NULL for LANE v1 */ - int is_proxy; /* bridge between ATM and Ethernet */ - int is_trdev; /* Device type, 0 = Ethernet, 1 = TokenRing */ + u8 *tlvs; /* LANE2: TLVs are new */ + u32 sizeoftlvs; /* The size of the tlv array in bytes */ + int lane_version; /* LANE2 */ + int itfnum; /* e.g. 2 for lec2, 5 for lec5 */ + struct lane2_ops *lane2_ops; /* can be NULL for LANE v1 */ + int is_proxy; /* bridge between ATM and Ethernet */ + int is_trdev; /* Device type, 0 = Ethernet, 1 = TokenRing */ }; struct lec_vcc_priv { - void (*old_pop)(struct atm_vcc *vcc, struct sk_buff *skb); + void (*old_pop) (struct atm_vcc *vcc, struct sk_buff *skb); int xoff; }; #define LEC_VCC_PRIV(vcc) ((struct lec_vcc_priv *)((vcc)->user_back)) -#endif /* _LEC_H_ */ - +#endif /* _LEC_H_ */ diff --git a/net/atm/lec_arpc.h b/net/atm/lec_arpc.h index 3974480..0230ca1 100644 --- a/net/atm/lec_arpc.h +++ b/net/atm/lec_arpc.h @@ -1,92 +1,98 @@ /* * Lec arp cache - * Marko Kiiskila mkiiskila@yahoo.com * + * Marko Kiiskila <mkiiskila@yahoo.com> */ -#ifndef _LEC_ARP_H -#define _LEC_ARP_H +#ifndef _LEC_ARP_H_ +#define _LEC_ARP_H_ #include <linux/atm.h> #include <linux/atmdev.h> #include <linux/if_ether.h> #include <linux/atmlec.h> struct lec_arp_table { - struct lec_arp_table *next; /* Linked entry list */ - unsigned char atm_addr[ATM_ESA_LEN]; /* Atm address */ - unsigned char mac_addr[ETH_ALEN]; /* Mac address */ - int is_rdesc; /* Mac address is a route descriptor */ - struct atm_vcc *vcc; /* Vcc this entry is attached */ - struct atm_vcc *recv_vcc; /* Vcc we receive data from */ - void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb); - /* Push that leads to daemon */ - void (*old_recv_push)(struct atm_vcc *vcc, struct sk_buff *skb); - /* Push that leads to daemon */ - void (*old_close)(struct atm_vcc *vcc); - /* We want to see when this - * vcc gets closed */ - unsigned long last_used; /* For expiry */ - unsigned long timestamp; /* Used for various timestamping - * things: - * 1. FLUSH started - * (status=ESI_FLUSH_PENDING) - * 2. Counting to - * max_unknown_frame_time - * (status=ESI_ARP_PENDING|| - * status=ESI_VC_PENDING) - */ - unsigned char no_tries; /* No of times arp retry has been - tried */ - unsigned char status; /* Status of this entry */ - unsigned short flags; /* Flags for this entry */ - unsigned short packets_flooded; /* Data packets flooded */ - unsigned long flush_tran_id; /* Transaction id in flush protocol */ - struct timer_list timer; /* Arping timer */ - struct lec_priv *priv; /* Pointer back */ + struct lec_arp_table *next; /* Linked entry list */ + unsigned char atm_addr[ATM_ESA_LEN]; /* Atm address */ + unsigned char mac_addr[ETH_ALEN]; /* Mac address */ + int is_rdesc; /* Mac address is a route descriptor */ + struct atm_vcc *vcc; /* Vcc this entry is attached */ + struct atm_vcc *recv_vcc; /* Vcc we receive data from */ - u8 *tlvs; /* LANE2: Each MAC address can have TLVs */ - u32 sizeoftlvs; /* associated with it. sizeoftlvs tells the */ - /* the length of the tlvs array */ - struct sk_buff_head tx_wait; /* wait queue for outgoing packets */ + void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb); + /* Push that leads to daemon */ + + void (*old_recv_push) (struct atm_vcc *vcc, struct sk_buff *skb); + /* Push that leads to daemon */ + + void (*old_close) (struct atm_vcc *vcc); + /* We want to see when this vcc gets closed */ + + unsigned long last_used; /* For expiry */ + unsigned long timestamp; /* Used for various timestamping things: + * 1. FLUSH started + * (status=ESI_FLUSH_PENDING) + * 2. Counting to + * max_unknown_frame_time + * (status=ESI_ARP_PENDING|| + * status=ESI_VC_PENDING) + */ + unsigned char no_tries; /* No of times arp retry has been tried */ + unsigned char status; /* Status of this entry */ + unsigned short flags; /* Flags for this entry */ + unsigned short packets_flooded; /* Data packets flooded */ + unsigned long flush_tran_id; /* Transaction id in flush protocol */ + struct timer_list timer; /* Arping timer */ + struct lec_priv *priv; /* Pointer back */ + u8 *tlvs; + u32 sizeoftlvs; /* + * LANE2: Each MAC address can have TLVs + * associated with it. sizeoftlvs tells the + * the length of the tlvs array + */ + struct sk_buff_head tx_wait; /* wait queue for outgoing packets */ }; -struct tlv { /* LANE2: Template tlv struct for accessing */ - /* the tlvs in the lec_arp_table->tlvs array*/ - u32 type; - u8 length; - u8 value[255]; +/* + * LANE2: Template tlv struct for accessing + * the tlvs in the lec_arp_table->tlvs array + */ +struct tlv { + u32 type; + u8 length; + u8 value[255]; }; /* Status fields */ -#define ESI_UNKNOWN 0 /* - * Next packet sent to this mac address - * causes ARP-request to be sent - */ -#define ESI_ARP_PENDING 1 /* - * There is no ATM address associated with this - * 48-bit address. The LE-ARP protocol is in - * progress. - */ -#define ESI_VC_PENDING 2 /* - * There is a valid ATM address associated with - * this 48-bit address but there is no VC set - * up to that ATM address. The signaling - * protocol is in process. - */ -#define ESI_FLUSH_PENDING 4 /* - * The LEC has been notified of the FLUSH_START - * status and it is assumed that the flush - * protocol is in process. - */ -#define ESI_FORWARD_DIRECT 5 /* - * Either the Path Switching Delay (C22) has - * elapsed or the LEC has notified the Mapping - * that the flush protocol has completed. In - * either case, it is safe to forward packets - * to this address via the data direct VC. - */ +#define ESI_UNKNOWN 0 /* + * Next packet sent to this mac address + * causes ARP-request to be sent + */ +#define ESI_ARP_PENDING 1 /* + * There is no ATM address associated with this + * 48-bit address. The LE-ARP protocol is in + * progress. + */ +#define ESI_VC_PENDING 2 /* + * There is a valid ATM address associated with + * this 48-bit address but there is no VC set + * up to that ATM address. The signaling + * protocol is in process. + */ +#define ESI_FLUSH_PENDING 4 /* + * The LEC has been notified of the FLUSH_START + * status and it is assumed that the flush + * protocol is in process. + */ +#define ESI_FORWARD_DIRECT 5 /* + * Either the Path Switching Delay (C22) has + * elapsed or the LEC has notified the Mapping + * that the flush protocol has completed. In + * either case, it is safe to forward packets + * to this address via the data direct VC. + */ /* Flag values */ #define LEC_REMOTE_FLAG 0x0001 #define LEC_PERMANENT_FLAG 0x0002 -#endif +#endif /* _LEC_ARP_H_ */ |
