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-rw-r--r--include/net/netlabel.h49
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 */
109static 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 *