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nl80211: refactor mesh parameter parsing 

I'm going to need this in a new place later.

Tested-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2010-12-03 09:20:43 +01:00 committed by John W. Linville
parent f9e10ce4cf
commit bd90fdcc5f
1 changed files with 38 additions and 23 deletions
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61
net/wireless/nl80211.c
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@ -2613,14 +2613,6 @@ static int nl80211_get_mesh_params(struct sk_buff *skb,
return -ENOBUFS;
}
#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
do {\
if (table[attr_num]) {\
cfg.param = nla_fn(table[attr_num]); \
mask |= (1 << (attr_num - 1)); \
} \
} while (0);\
static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
[NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
[NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
@ -2639,31 +2631,34 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
[NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
};
static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
static int nl80211_parse_mesh_params(struct genl_info *info,
struct mesh_config *cfg,
u32 *mask_out)
{
u32 mask;
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct mesh_config cfg;
struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
struct nlattr *parent_attr;
u32 mask = 0;
parent_attr = info->attrs[NL80211_ATTR_MESH_PARAMS];
if (!parent_attr)
#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
do {\
if (table[attr_num]) {\
cfg->param = nla_fn(table[attr_num]); \
mask |= (1 << (attr_num - 1)); \
} \
} while (0);\
if (!info->attrs[NL80211_ATTR_MESH_PARAMS])
return -EINVAL;
if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
parent_attr, nl80211_meshconf_params_policy))
info->attrs[NL80211_ATTR_MESH_PARAMS],
nl80211_meshconf_params_policy))
return -EINVAL;
if (!rdev->ops->set_mesh_params)
return -EOPNOTSUPP;
/* This makes sure that there aren't more than 32 mesh config
* parameters (otherwise our bitfield scheme would not work.) */
BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
/* Fill in the params struct */
mask = 0;
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
mask, NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
@ -2703,12 +2698,32 @@ static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
NL80211_MESHCONF_HWMP_ROOTMODE,
nla_get_u8);
if (mask_out)
*mask_out = mask;
return 0;
#undef FILL_IN_MESH_PARAM_IF_SET
}
static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct mesh_config cfg;
u32 mask;
int err;
if (!rdev->ops->set_mesh_params)
return -EOPNOTSUPP;
err = nl80211_parse_mesh_params(info, &cfg, &mask);
if (err)
return err;
/* Apply changes */
return rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
}
#undef FILL_IN_MESH_PARAM_IF_SET
static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
{
struct sk_buff *msg;