1 #ifndef _NET_GARP_H 2 #define _NET_GARP_H 3 4 #include <net/stp.h> 5 6 #define GARP_PROTOCOL_ID 0x1 7 #define GARP_END_MARK 0x0 8 9 struct garp_pdu_hdr { 10 __be16 protocol; 11 }; 12 13 struct garp_msg_hdr { 14 u8 attrtype; 15 }; 16 17 enum garp_attr_event { 18 GARP_LEAVE_ALL, 19 GARP_JOIN_EMPTY, 20 GARP_JOIN_IN, 21 GARP_LEAVE_EMPTY, 22 GARP_LEAVE_IN, 23 GARP_EMPTY, 24 }; 25 26 struct garp_attr_hdr { 27 u8 len; 28 u8 event; 29 u8 data[]; 30 }; 31 32 struct garp_skb_cb { 33 u8 cur_type; 34 }; 35 36 static inline struct garp_skb_cb *garp_cb(struct sk_buff *skb) 37 { 38 BUILD_BUG_ON(sizeof(struct garp_skb_cb) > 39 FIELD_SIZEOF(struct sk_buff, cb)); 40 return (struct garp_skb_cb *)skb->cb; 41 } 42 43 enum garp_applicant_state { 44 GARP_APPLICANT_INVALID, 45 GARP_APPLICANT_VA, 46 GARP_APPLICANT_AA, 47 GARP_APPLICANT_QA, 48 GARP_APPLICANT_LA, 49 GARP_APPLICANT_VP, 50 GARP_APPLICANT_AP, 51 GARP_APPLICANT_QP, 52 GARP_APPLICANT_VO, 53 GARP_APPLICANT_AO, 54 GARP_APPLICANT_QO, 55 __GARP_APPLICANT_MAX 56 }; 57 #define GARP_APPLICANT_MAX (__GARP_APPLICANT_MAX - 1) 58 59 enum garp_event { 60 GARP_EVENT_REQ_JOIN, 61 GARP_EVENT_REQ_LEAVE, 62 GARP_EVENT_R_JOIN_IN, 63 GARP_EVENT_R_JOIN_EMPTY, 64 GARP_EVENT_R_EMPTY, 65 GARP_EVENT_R_LEAVE_IN, 66 GARP_EVENT_R_LEAVE_EMPTY, 67 GARP_EVENT_TRANSMIT_PDU, 68 __GARP_EVENT_MAX 69 }; 70 #define GARP_EVENT_MAX (__GARP_EVENT_MAX - 1) 71 72 enum garp_action { 73 GARP_ACTION_NONE, 74 GARP_ACTION_S_JOIN_IN, 75 GARP_ACTION_S_LEAVE_EMPTY, 76 }; 77 78 struct garp_attr { 79 struct rb_node node; 80 enum garp_applicant_state state; 81 u8 type; 82 u8 dlen; 83 unsigned char data[]; 84 }; 85 86 enum garp_applications { 87 GARP_APPLICATION_GVRP, 88 __GARP_APPLICATION_MAX 89 }; 90 #define GARP_APPLICATION_MAX (__GARP_APPLICATION_MAX - 1) 91 92 struct garp_application { 93 enum garp_applications type; 94 unsigned int maxattr; 95 struct stp_proto proto; 96 }; 97 98 struct garp_applicant { 99 struct garp_application *app; 100 struct net_device *dev; 101 struct timer_list join_timer; 102 103 spinlock_t lock; 104 struct sk_buff_head queue; 105 struct sk_buff *pdu; 106 struct rb_root gid; 107 struct rcu_head rcu; 108 }; 109 110 struct garp_port { 111 struct garp_applicant __rcu *applicants[GARP_APPLICATION_MAX + 1]; 112 struct rcu_head rcu; 113 }; 114 115 int garp_register_application(struct garp_application *app); 116 void garp_unregister_application(struct garp_application *app); 117 118 int garp_init_applicant(struct net_device *dev, struct garp_application *app); 119 void garp_uninit_applicant(struct net_device *dev, 120 struct garp_application *app); 121 122 int garp_request_join(const struct net_device *dev, 123 const struct garp_application *app, const void *data, 124 u8 len, u8 type); 125 void garp_request_leave(const struct net_device *dev, 126 const struct garp_application *app, 127 const void *data, u8 len, u8 type); 128 129 #endif /* _NET_GARP_H */ 130