diff options
Diffstat (limited to 'include/net/netlabel.h')
-rw-r--r-- | include/net/netlabel.h | 49 |
1 files changed, 2 insertions, 47 deletions
diff --git a/include/net/netlabel.h b/include/net/netlabel.h index bf7b564e3540..6692430063fd 100644 --- a/include/net/netlabel.h +++ b/include/net/netlabel.h | |||
@@ -57,9 +57,8 @@ | |||
57 | * The payload is dependent on the subsystem specified in the | 57 | * The payload is dependent on the subsystem specified in the |
58 | * 'nlmsghdr->nlmsg_type' and should be defined below, supporting functions | 58 | * 'nlmsghdr->nlmsg_type' and should be defined below, supporting functions |
59 | * should be defined in the corresponding net/netlabel/netlabel_<subsys>.h|c | 59 | * should be defined in the corresponding net/netlabel/netlabel_<subsys>.h|c |
60 | * file. All of the fields in the NetLabel payload are NETLINK attributes, the | 60 | * file. All of the fields in the NetLabel payload are NETLINK attributes, see |
61 | * length of each field is the length of the NETLINK attribute payload, see | 61 | * the include/net/netlink.h file for more information on NETLINK attributes. |
62 | * include/net/netlink.h for more information on NETLINK attributes. | ||
63 | * | 62 | * |
64 | */ | 63 | */ |
65 | 64 | ||
@@ -82,50 +81,6 @@ | |||
82 | #define NETLBL_NLTYPE_UNLABELED 5 | 81 | #define NETLBL_NLTYPE_UNLABELED 5 |
83 | #define NETLBL_NLTYPE_UNLABELED_NAME "NLBL_UNLBL" | 82 | #define NETLBL_NLTYPE_UNLABELED_NAME "NLBL_UNLBL" |
84 | 83 | ||
85 | /* NetLabel return codes */ | ||
86 | #define NETLBL_E_OK 0 | ||
87 | |||
88 | /* | ||
89 | * Helper functions | ||
90 | */ | ||
91 | |||
92 | #define NETLBL_LEN_U8 nla_total_size(sizeof(u8)) | ||
93 | #define NETLBL_LEN_U16 nla_total_size(sizeof(u16)) | ||
94 | #define NETLBL_LEN_U32 nla_total_size(sizeof(u32)) | ||
95 | |||
96 | /** | ||
97 | * netlbl_netlink_alloc_skb - Allocate a NETLINK message buffer | ||
98 | * @head: the amount of headroom in bytes | ||
99 | * @body: the desired size (minus headroom) in bytes | ||
100 | * @gfp_flags: the alloc flags to pass to alloc_skb() | ||
101 | * | ||
102 | * Description: | ||
103 | * Allocate a NETLINK message buffer based on the sizes given in @head and | ||
104 | * @body. If @head is greater than zero skb_reserve() is called to reserve | ||
105 | * @head bytes at the start of the buffer. Returns a valid sk_buff pointer on | ||
106 | * success, NULL on failure. | ||
107 | * | ||
108 | */ | ||
109 | static inline struct sk_buff *netlbl_netlink_alloc_skb(size_t head, | ||
110 | size_t body, | ||
111 | gfp_t gfp_flags) | ||
112 | { | ||
113 | struct sk_buff *skb; | ||
114 | |||
115 | skb = alloc_skb(NLMSG_ALIGN(head + body), gfp_flags); | ||
116 | if (skb == NULL) | ||
117 | return NULL; | ||
118 | if (head > 0) { | ||
119 | skb_reserve(skb, head); | ||
120 | if (skb_tailroom(skb) < body) { | ||
121 | kfree_skb(skb); | ||
122 | return NULL; | ||
123 | } | ||
124 | } | ||
125 | |||
126 | return skb; | ||
127 | } | ||
128 | |||
129 | /* | 84 | /* |
130 | * NetLabel - Kernel API for accessing the network packet label mappings. | 85 | * NetLabel - Kernel API for accessing the network packet label mappings. |
131 | * | 86 | * |