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authorHolger Schurig <holgerschurig@gmail.com>2009-11-11 11:30:02 +0100
committerJohn W. Linville <linville@tuxdriver.com>2009-11-13 17:43:58 -0500
commita043897a314e8bcfc821d54fe4e591efed5936a3 (patch)
tree2abcf1d0626c29920462876bec427fb64fc4729c /net/wireless
parentf273fe55e3f3f0b66b7624c0102d3ef44bbdfe6a (diff)
cfg80211: introduce nl80211_get_ifidx()
... which get's rid of three indentical cut-n-paste sections. Signed-off-by: Holger Schurig <holgerschurig@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/nl80211.c76
1 files changed, 33 insertions, 43 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 17bcad69428..4dc139cdba5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -152,6 +152,26 @@ nl80211_key_policy[NL80211_KEY_MAX + 1] __read_mostly = {
[NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
};
+/* ifidx get helper */
+static int nl80211_get_ifidx(struct netlink_callback *cb)
+{
+ int res;
+
+ res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
+ nl80211_fam.attrbuf, nl80211_fam.maxattr,
+ nl80211_policy);
+ if (res)
+ return res;
+
+ if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
+ return -EINVAL;
+
+ res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
+ if (!res)
+ return -EINVAL;
+ return res;
+}
+
/* IE validation */
static bool is_valid_ie_attr(const struct nlattr *attr)
{
@@ -1693,20 +1713,10 @@ static int nl80211_dump_station(struct sk_buff *skb,
int sta_idx = cb->args[1];
int err;
- if (!ifidx) {
- err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
- nl80211_fam.attrbuf, nl80211_fam.maxattr,
- nl80211_policy);
- if (err)
- return err;
-
- if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
- return -EINVAL;
-
- ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
- if (!ifidx)
- return -EINVAL;
- }
+ if (!ifidx)
+ ifidx = nl80211_get_ifidx(cb);
+ if (ifidx < 0)
+ return ifidx;
rtnl_lock();
@@ -2156,20 +2166,10 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
int path_idx = cb->args[1];
int err;
- if (!ifidx) {
- err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
- nl80211_fam.attrbuf, nl80211_fam.maxattr,
- nl80211_policy);
- if (err)
- return err;
-
- if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
- return -EINVAL;
-
- ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
- if (!ifidx)
- return -EINVAL;
- }
+ if (!ifidx)
+ ifidx = nl80211_get_ifidx(cb);
+ if (ifidx < 0)
+ return ifidx;
rtnl_lock();
@@ -3198,21 +3198,11 @@ static int nl80211_dump_scan(struct sk_buff *skb,
int start = cb->args[1], idx = 0;
int err;
- if (!ifidx) {
- err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
- nl80211_fam.attrbuf, nl80211_fam.maxattr,
- nl80211_policy);
- if (err)
- return err;
-
- if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
- return -EINVAL;
-
- ifidx = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
- if (!ifidx)
- return -EINVAL;
- cb->args[0] = ifidx;
- }
+ if (!ifidx)
+ ifidx = nl80211_get_ifidx(cb);
+ if (ifidx < 0)
+ return ifidx;
+ cb->args[0] = ifidx;
dev = dev_get_by_index(sock_net(skb->sk), ifidx);
if (!dev)