diff options
Diffstat (limited to 'net/dccp/feat.h')
-rw-r--r-- | net/dccp/feat.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/net/dccp/feat.h b/net/dccp/feat.h index f5e99b39712a..232c653e69c5 100644 --- a/net/dccp/feat.h +++ b/net/dccp/feat.h | |||
@@ -14,6 +14,15 @@ | |||
14 | #include <linux/types.h> | 14 | #include <linux/types.h> |
15 | #include "dccp.h" | 15 | #include "dccp.h" |
16 | 16 | ||
17 | /* | ||
18 | * Known limit values | ||
19 | */ | ||
20 | /* Ack Ratio takes 2-byte integer values (11.3) */ | ||
21 | #define DCCPF_ACK_RATIO_MAX 0xFFFF | ||
22 | /* Wmin=32 and Wmax=2^46-1 from 7.5.2 */ | ||
23 | #define DCCPF_SEQ_WMIN 32 | ||
24 | #define DCCPF_SEQ_WMAX 0x3FFFFFFFFFFFull | ||
25 | |||
17 | enum dccp_feat_type { | 26 | enum dccp_feat_type { |
18 | FEAT_AT_RX = 1, /* located at RX side of half-connection */ | 27 | FEAT_AT_RX = 1, /* located at RX side of half-connection */ |
19 | FEAT_AT_TX = 2, /* located at TX side of half-connection */ | 28 | FEAT_AT_TX = 2, /* located at TX side of half-connection */ |
@@ -75,6 +84,20 @@ static inline u8 dccp_feat_genopt(struct dccp_feat_entry *entry) | |||
75 | return entry->is_local ? DCCPO_CHANGE_L : DCCPO_CHANGE_R; | 84 | return entry->is_local ? DCCPO_CHANGE_L : DCCPO_CHANGE_R; |
76 | } | 85 | } |
77 | 86 | ||
87 | /** | ||
88 | * struct ccid_dependency - Track changes resulting from choosing a CCID | ||
89 | * @dependent_feat: one of %dccp_feature_numbers | ||
90 | * @is_local: local (1) or remote (0) @dependent_feat | ||
91 | * @is_mandatory: whether presence of @dependent_feat is mission-critical or not | ||
92 | * @val: corresponding default value for @dependent_feat (u8 is sufficient here) | ||
93 | */ | ||
94 | struct ccid_dependency { | ||
95 | u8 dependent_feat; | ||
96 | bool is_local:1, | ||
97 | is_mandatory:1; | ||
98 | u8 val; | ||
99 | }; | ||
100 | |||
78 | #ifdef CONFIG_IP_DCCP_DEBUG | 101 | #ifdef CONFIG_IP_DCCP_DEBUG |
79 | extern const char *dccp_feat_typename(const u8 type); | 102 | extern const char *dccp_feat_typename(const u8 type); |
80 | extern const char *dccp_feat_name(const u8 feat); | 103 | extern const char *dccp_feat_name(const u8 feat); |
@@ -97,6 +120,6 @@ extern int dccp_feat_confirm_recv(struct sock *sk, u8 type, u8 feature, | |||
97 | extern void dccp_feat_clean(struct dccp_minisock *dmsk); | 120 | extern void dccp_feat_clean(struct dccp_minisock *dmsk); |
98 | extern int dccp_feat_clone(struct sock *oldsk, struct sock *newsk); | 121 | extern int dccp_feat_clone(struct sock *oldsk, struct sock *newsk); |
99 | extern int dccp_feat_clone_list(struct list_head const *, struct list_head *); | 122 | extern int dccp_feat_clone_list(struct list_head const *, struct list_head *); |
100 | extern int dccp_feat_init(struct dccp_minisock *dmsk); | 123 | extern int dccp_feat_init(struct sock *sk); |
101 | 124 | ||
102 | #endif /* _DCCP_FEAT_H */ | 125 | #endif /* _DCCP_FEAT_H */ |