diff options
Diffstat (limited to 'include/net/netlink.h')
| -rw-r--r-- | include/net/netlink.h | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/include/net/netlink.h b/include/net/netlink.h index 23f27b0b3cef..1f18b47f41b4 100644 --- a/include/net/netlink.h +++ b/include/net/netlink.h @@ -1415,13 +1415,18 @@ static inline void *nla_memdup(const struct nlattr *src, gfp_t gfp) } /** - * nla_nest_start - Start a new level of nested attributes + * nla_nest_start_noflag - Start a new level of nested attributes * @skb: socket buffer to add attributes to * @attrtype: attribute type of container * - * Returns the container attribute + * This function exists for backward compatibility to use in APIs which never + * marked their nest attributes with NLA_F_NESTED flag. New APIs should use + * nla_nest_start() which sets the flag. + * + * Returns the container attribute or NULL on error */ -static inline struct nlattr *nla_nest_start(struct sk_buff *skb, int attrtype) +static inline struct nlattr *nla_nest_start_noflag(struct sk_buff *skb, + int attrtype) { struct nlattr *start = (struct nlattr *)skb_tail_pointer(skb); @@ -1432,6 +1437,21 @@ static inline struct nlattr *nla_nest_start(struct sk_buff *skb, int attrtype) } /** + * nla_nest_start - Start a new level of nested attributes, with NLA_F_NESTED + * @skb: socket buffer to add attributes to + * @attrtype: attribute type of container + * + * Unlike nla_nest_start_noflag(), mark the nest attribute with NLA_F_NESTED + * flag. This is the preferred function to use in new code. + * + * Returns the container attribute or NULL on error + */ +static inline struct nlattr *nla_nest_start(struct sk_buff *skb, int attrtype) +{ + return nla_nest_start_noflag(skb, attrtype | NLA_F_NESTED); +} + +/** * nla_nest_end - Finalize nesting of attributes * @skb: socket buffer the attributes are stored in * @start: container attribute |