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authorPatrick McHardy <kaber@trash.net>2008-07-06 00:26:13 -0400
committerDavid S. Miller <davem@davemloft.net>2008-07-06 00:26:13 -0400
commiteca9ebac651f774d8b10fce7c5d173c3c3d3394f (patch)
tree58b4117a0820dff43d4faa7fdcae5cd7723674c7 /include/net/garp.h
parent7c85fbf0657f216557b0c9c4a2e4e07f37d8bb8c (diff)
net: Add GARP applicant-only participant
Add an implementation of the GARP (Generic Attribute Registration Protocol) applicant-only participant. This will be used by the following patch to add GVRP support to the VLAN code. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/garp.h')
-rw-r--r--include/net/garp.h127
1 files changed, 127 insertions, 0 deletions
diff --git a/include/net/garp.h b/include/net/garp.h
new file mode 100644
index 000000000000..73c772395f5b
--- /dev/null
+++ b/include/net/garp.h
@@ -0,0 +1,127 @@
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
9struct garp_pdu_hdr {
10 __be16 protocol;
11};
12
13struct garp_msg_hdr {
14 u8 attrtype;
15};
16
17enum 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
26struct garp_attr_hdr {
27 u8 len;
28 u8 event;
29 u8 data[];
30};
31
32struct garp_skb_cb {
33 u8 cur_type;
34};
35
36static 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
43enum 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
59enum 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
72enum garp_action {
73 GARP_ACTION_NONE,
74 GARP_ACTION_S_JOIN_IN,
75 GARP_ACTION_S_LEAVE_EMPTY,
76};
77
78struct 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
86enum garp_applications {
87 __GARP_APPLICATION_MAX
88};
89#define GARP_APPLICATION_MAX (__GARP_APPLICATION_MAX - 1)
90
91struct garp_application {
92 enum garp_applications type;
93 unsigned int maxattr;
94 struct stp_proto proto;
95};
96
97struct garp_applicant {
98 struct garp_application *app;
99 struct net_device *dev;
100 struct timer_list join_timer;
101
102 spinlock_t lock;
103 struct sk_buff_head queue;
104 struct sk_buff *pdu;
105 struct rb_root gid;
106};
107
108struct garp_port {
109 struct garp_applicant *applicants[GARP_APPLICATION_MAX + 1];
110};
111
112extern int garp_register_application(struct garp_application *app);
113extern void garp_unregister_application(struct garp_application *app);
114
115extern int garp_init_applicant(struct net_device *dev,
116 struct garp_application *app);
117extern void garp_uninit_applicant(struct net_device *dev,
118 struct garp_application *app);
119
120extern int garp_request_join(const struct net_device *dev,
121 const struct garp_application *app,
122 const void *data, u8 len, u8 type);
123extern void garp_request_leave(const struct net_device *dev,
124 const struct garp_application *app,
125 const void *data, u8 len, u8 type);
126
127#endif /* _NET_GARP_H */