[SK_BUFF]: Convert skb->tail to sk_buff_data_t

[mirror_ubuntu-bionic-kernel.git] / include / net / netlink.h

diff --git a/include/net/netlink.h b/include/net/netlink.h
index 4ab68a7a636a927e915a66139ace5737cab78ed7..2c7ab107f20d4d27e48253e51020b4e63781f4c2 100644 (file)
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -3,6 +3,7 @@
 
 #include <linux/types.h>
 #include <linux/netlink.h>
+#include <linux/jiffies.h>
 
 /* ========================================================================
  *         Netlink Messages and Attributes Interface (As Seen On TV)
@@ -500,14 +501,15 @@ static inline struct nlmsghdr *nlmsg_put_answer(struct sk_buff *skb,
 
 /**
  * nlmsg_new - Allocate a new netlink message
- * @size: maximum size of message
+ * @payload: size of the message payload
  * @flags: the type of memory to allocate.
  *
- * Use NLMSG_GOODSIZE if size isn't know and you need a good default size.
+ * Use NLMSG_DEFAULT_SIZE if the size of the payload isn't known
+ * and a good default is needed.
  */
-static inline struct sk_buff *nlmsg_new(int size, gfp_t flags)
+static inline struct sk_buff *nlmsg_new(size_t payload, gfp_t flags)
 {
-       return alloc_skb(size, flags);
+       return alloc_skb(nlmsg_total_size(payload), flags);
 }
 
 /**
@@ -523,7 +525,7 @@ static inline struct sk_buff *nlmsg_new(int size, gfp_t flags)
  */
 static inline int nlmsg_end(struct sk_buff *skb, struct nlmsghdr *nlh)
 {
-       nlh->nlmsg_len = skb->tail - (unsigned char *) nlh;
+       nlh->nlmsg_len = skb_tail_pointer(skb) - (unsigned char *)nlh;
 
        return skb->len;
 }
@@ -536,7 +538,7 @@ static inline int nlmsg_end(struct sk_buff *skb, struct nlmsghdr *nlh)
  */
 static inline void *nlmsg_get_pos(struct sk_buff *skb)
 {
-       return skb->tail;
+       return skb_tail_pointer(skb);
 }
 
 /**
@@ -828,9 +830,15 @@ static inline int nla_put_msecs(struct sk_buff *skb, int attrtype,
 #define NLA_PUT_U16(skb, attrtype, value) \
        NLA_PUT_TYPE(skb, u16, attrtype, value)
 
+#define NLA_PUT_LE16(skb, attrtype, value) \
+       NLA_PUT_TYPE(skb, __le16, attrtype, value)
+
 #define NLA_PUT_U32(skb, attrtype, value) \
        NLA_PUT_TYPE(skb, u32, attrtype, value)
 
+#define NLA_PUT_BE32(skb, attrtype, value) \
+       NLA_PUT_TYPE(skb, __be32, attrtype, value)
+
 #define NLA_PUT_U64(skb, attrtype, value) \
        NLA_PUT_TYPE(skb, u64, attrtype, value)
 
@@ -852,6 +860,15 @@ static inline u32 nla_get_u32(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)
+{
+       return *(__be32 *) nla_data(nla);
+}
+
 /**
  * nla_get_u16 - return payload of u16 attribute
  * @nla: u16 netlink attribute
@@ -861,6 +878,15 @@ static inline u16 nla_get_u16(struct nlattr *nla)
        return *(u16 *) nla_data(nla);
 }
 
+/**
+ * nla_get_le16 - return payload of __le16 attribute
+ * @nla: __le16 netlink attribute
+ */
+static inline __le16 nla_get_le16(struct nlattr *nla)
+{
+       return *(__le16 *) nla_data(nla);
+}
+
 /**
  * nla_get_u8 - return payload of u8 attribute
  * @nla: u8 netlink attribute
@@ -914,7 +940,7 @@ static inline unsigned long nla_get_msecs(struct nlattr *nla)
  */
 static inline struct nlattr *nla_nest_start(struct sk_buff *skb, int attrtype)
 {
-       struct nlattr *start = (struct nlattr *) skb->tail;
+       struct nlattr *start = (struct nlattr *)skb_tail_pointer(skb);
 
        if (nla_put(skb, attrtype, 0, NULL) < 0)
                return NULL;
@@ -934,7 +960,7 @@ static inline struct nlattr *nla_nest_start(struct sk_buff *skb, int attrtype)
  */
 static inline int nla_nest_end(struct sk_buff *skb, struct nlattr *start)
 {
-       start->nla_len = skb->tail - (unsigned char *) start;
+       start->nla_len = skb_tail_pointer(skb) - (unsigned char *)start;
        return skb->len;
 }