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[NETLINK]: Extend netlink messaging interface

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Adds:
 nlmsg_get_pos()                 return current position in message
 nlmsg_trim()                    trim part of message
 nla_reserve_nohdr(skb, len)     reserve room for an attribute w/o hdr
 nla_put_nohdr(skb, len, data)   add attribute w/o hdr
 nla_find_nested()               find attribute in nested attributes

Fixes nlmsg_new() to take allocation flags and consider size.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf
2006-08-04 23:03:05 -07:00
committed by David S. Miller
parent e1ef4bf23b
commit fe4944e59c
4 changed files with 141 additions and 12 deletions
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2
net/netlink/genetlink.c
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@@ -440,7 +440,7 @@ static struct sk_buff *ctrl_build_msg(struct genl_family *family, u32 pid,
struct sk_buff *skb;
int err;
skb = nlmsg_new(NLMSG_GOODSIZE);
skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (skb == NULL)
return ERR_PTR(-ENOBUFS);