* nla_reserve_nohdr(skb, len) reserve room for an attribute w/o hdr
* nla_put(skb, type, len, data) add attribute to skb
* nla_put_nohdr(skb, len, data) add attribute w/o hdr
+ * nla_append(skb, len, data) append data to skb
*
* Attribute Construction for Basic Types:
* nla_put_u8(skb, type, value) add u8 attribute to skb
* Nested Attributes Construction:
* nla_nest_start(skb, type) start a nested attribute
* nla_nest_end(skb, nla) finalize a nested attribute
- * nla_nest_compat_start(skb, type, start a nested compat attribute
- * len, data)
- * nla_nest_compat_end(skb, type) finalize a nested compat attribute
* nla_nest_cancel(skb, nla) cancel nested attribute construction
*
* Attribute Length Calculations:
* nla_find_nested() find attribute in nested attributes
* nla_parse() parse and validate stream of attrs
* nla_parse_nested() parse nested attribuets
- * nla_parse_nested_compat() parse nested compat attributes
* nla_for_each_attr() loop over all attributes
* nla_for_each_nested() loop over the nested attributes
*=========================================================================
*/
struct nl_info {
struct nlmsghdr *nlh;
+ struct net *nl_net;
u32 pid;
};
extern int nla_parse(struct nlattr *tb[], int maxtype,
struct nlattr *head, int len,
const struct nla_policy *policy);
+extern int nla_policy_len(const struct nla_policy *, int);
extern struct nlattr * nla_find(struct nlattr *head, int len, int attrtype);
extern size_t nla_strlcpy(char *dst, const struct nlattr *nla,
size_t dstsize);
-extern int nla_memcpy(void *dest, struct nlattr *src, int count);
+extern int nla_memcpy(void *dest, const struct nlattr *src, int count);
extern int nla_memcmp(const struct nlattr *nla, const void *data,
size_t size);
extern int nla_strcmp(const struct nlattr *nla, const char *str);
int attrlen, const void *data);
extern int nla_put_nohdr(struct sk_buff *skb, int attrlen,
const void *data);
+extern int nla_append(struct sk_buff *skb, int attrlen,
+ const void *data);
/**************************************************************************
* Netlink Messages
*/
static inline int nlmsg_ok(const struct nlmsghdr *nlh, int remaining)
{
- return (remaining >= sizeof(struct nlmsghdr) &&
+ return (remaining >= (int) sizeof(struct nlmsghdr) &&
nlh->nlmsg_len >= sizeof(struct nlmsghdr) &&
nlh->nlmsg_len <= remaining);
}
* @skb: socket buffer the message is stored in
* @mark: mark to trim to
*
- * Trims the message to the provided mark. Returns -1.
+ * Trims the message to the provided mark.
*/
-static inline int nlmsg_trim(struct sk_buff *skb, const void *mark)
+static inline void nlmsg_trim(struct sk_buff *skb, const void *mark)
{
if (mark)
skb_trim(skb, (unsigned char *) mark - skb->data);
-
- return -1;
}
/**
* @nlh: netlink message header
*
* Removes the complete netlink message including all
- * attributes from the socket buffer again. Returns -1.
+ * attributes from the socket buffer again.
*/
-static inline int nlmsg_cancel(struct sk_buff *skb, struct nlmsghdr *nlh)
+static inline void nlmsg_cancel(struct sk_buff *skb, struct nlmsghdr *nlh)
{
- return nlmsg_trim(skb, nlh);
+ nlmsg_trim(skb, nlh);
}
/**
*/
static inline int nla_ok(const struct nlattr *nla, int remaining)
{
- return remaining >= sizeof(*nla) &&
+ return remaining >= (int) sizeof(*nla) &&
nla->nla_len >= sizeof(*nla) &&
nla->nla_len <= remaining;
}
* See nla_parse()
*/
static inline int nla_parse_nested(struct nlattr *tb[], int maxtype,
- struct nlattr *nla,
+ const struct nlattr *nla,
const struct nla_policy *policy)
{
return nla_parse(tb, maxtype, nla_data(nla), nla_len(nla), policy);
}
/**
- * nla_parse_nested_compat - parse nested compat attributes
- * @tb: destination array with maxtype+1 elements
- * @maxtype: maximum attribute type to be expected
- * @nla: attribute containing the nested attributes
- * @data: pointer to point to contained structure
- * @len: length of contained structure
- * @policy: validation policy
- *
- * Parse a nested compat attribute. The compat attribute contains a structure
- * and optionally a set of nested attributes. On success the data pointer
- * points to the nested data and tb contains the parsed attributes
- * (see nla_parse).
- */
-static inline int __nla_parse_nested_compat(struct nlattr *tb[], int maxtype,
- struct nlattr *nla,
- const struct nla_policy *policy,
- int len)
-{
- if (nla_len(nla) < len)
- return -1;
- if (nla_len(nla) >= NLA_ALIGN(len) + sizeof(struct nlattr))
- return nla_parse_nested(tb, maxtype,
- nla_data(nla) + NLA_ALIGN(len),
- policy);
- memset(tb, 0, sizeof(struct nlattr *) * (maxtype + 1));
- return 0;
-}
-
-#define nla_parse_nested_compat(tb, maxtype, nla, policy, data, len) \
-({ data = nla_len(nla) >= len ? nla_data(nla) : NULL; \
- __nla_parse_nested_compat(tb, maxtype, nla, policy, len); })
-/**
* nla_put_u8 - Add a u8 netlink attribute to a socket buffer
* @skb: socket buffer to add attribute to
* @attrtype: attribute type
#define NLA_PUT_U64(skb, attrtype, value) \
NLA_PUT_TYPE(skb, u64, attrtype, value)
+#define NLA_PUT_BE64(skb, attrtype, value) \
+ NLA_PUT_TYPE(skb, __be64, attrtype, value)
+
#define NLA_PUT_STRING(skb, attrtype, value) \
NLA_PUT(skb, attrtype, strlen(value) + 1, value)
* nla_get_u32 - return payload of u32 attribute
* @nla: u32 netlink attribute
*/
-static inline u32 nla_get_u32(struct nlattr *nla)
+static inline u32 nla_get_u32(const struct nlattr *nla)
{
return *(u32 *) nla_data(nla);
}
* nla_get_be32 - return payload of __be32 attribute
* @nla: __be32 netlink attribute
*/
-static inline __be32 nla_get_be32(struct nlattr *nla)
+static inline __be32 nla_get_be32(const struct nlattr *nla)
{
return *(__be32 *) nla_data(nla);
}
* nla_get_u16 - return payload of u16 attribute
* @nla: u16 netlink attribute
*/
-static inline u16 nla_get_u16(struct nlattr *nla)
+static inline u16 nla_get_u16(const struct nlattr *nla)
{
return *(u16 *) nla_data(nla);
}
* nla_get_be16 - return payload of __be16 attribute
* @nla: __be16 netlink attribute
*/
-static inline __be16 nla_get_be16(struct nlattr *nla)
+static inline __be16 nla_get_be16(const struct nlattr *nla)
{
return *(__be16 *) nla_data(nla);
}
* nla_get_le16 - return payload of __le16 attribute
* @nla: __le16 netlink attribute
*/
-static inline __le16 nla_get_le16(struct nlattr *nla)
+static inline __le16 nla_get_le16(const struct nlattr *nla)
{
return *(__le16 *) nla_data(nla);
}
* nla_get_u8 - return payload of u8 attribute
* @nla: u8 netlink attribute
*/
-static inline u8 nla_get_u8(struct nlattr *nla)
+static inline u8 nla_get_u8(const struct nlattr *nla)
{
return *(u8 *) nla_data(nla);
}
* nla_get_u64 - return payload of u64 attribute
* @nla: u64 netlink attribute
*/
-static inline u64 nla_get_u64(struct nlattr *nla)
+static inline u64 nla_get_u64(const struct nlattr *nla)
{
u64 tmp;
* nla_get_flag - return payload of flag attribute
* @nla: flag netlink attribute
*/
-static inline int nla_get_flag(struct nlattr *nla)
+static inline int nla_get_flag(const struct nlattr *nla)
{
return !!nla;
}
*
* Returns the number of milliseconds in jiffies.
*/
-static inline unsigned long nla_get_msecs(struct nlattr *nla)
+static inline unsigned long nla_get_msecs(const struct nlattr *nla)
{
u64 msecs = nla_get_u64(nla);
}
/**
- * nla_nest_compat_start - Start a new level of nested compat attributes
- * @skb: socket buffer to add attributes to
- * @attrtype: attribute type of container
- * @attrlen: length of structure
- * @data: pointer to structure
- *
- * Start a nested compat attribute that contains both a structure and
- * a set of nested attributes.
- *
- * Returns the container attribute
- */
-static inline struct nlattr *nla_nest_compat_start(struct sk_buff *skb,
- int attrtype, int attrlen,
- const void *data)
-{
- struct nlattr *start = (struct nlattr *)skb_tail_pointer(skb);
-
- if (nla_put(skb, attrtype, attrlen, data) < 0)
- return NULL;
- if (nla_nest_start(skb, attrtype) == NULL) {
- nlmsg_trim(skb, start);
- return NULL;
- }
- return start;
-}
-
-/**
- * nla_nest_compat_end - Finalize nesting of compat attributes
- * @skb: socket buffer the attributes are stored in
- * @start: container attribute
- *
- * Corrects the container attribute header to include the all
- * appeneded attributes.
- *
- * Returns the total data length of the skb.
- */
-static inline int nla_nest_compat_end(struct sk_buff *skb, struct nlattr *start)
-{
- struct nlattr *nest = (void *)start + NLMSG_ALIGN(start->nla_len);
-
- start->nla_len = skb_tail_pointer(skb) - (unsigned char *)start;
- return nla_nest_end(skb, nest);
-}
-
-/**
* nla_nest_cancel - Cancel nesting of attributes
* @skb: socket buffer the message is stored in
* @start: container attribute
*
* Removes the container attribute and including all nested
- * attributes. Returns -1.
+ * attributes. Returns -EMSGSIZE
*/
-static inline int nla_nest_cancel(struct sk_buff *skb, struct nlattr *start)
+static inline void nla_nest_cancel(struct sk_buff *skb, struct nlattr *start)
{
- return nlmsg_trim(skb, start);
+ nlmsg_trim(skb, start);
}
/**
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff