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BACKPORT: nl80211: add handling for BSS color

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This patch adds the attributes, policy and parsing code to allow userland
to send the info about the BSS coloring settings to the kernel.

Bug: 154782456
Signed-off-by: John Crispin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[johannes: remove the strict policy parsing, that was a misunderstanding]
Signed-off-by: Johannes Berg <[email protected]>
Change-Id: Ib24133d6825ef455819f697de6d9d67c856c315e
(cherry picked from commit 5c5e52d1bb962510fecdc1ebecdde89694d1b223)
Signed-off-by: Vamsi Krishna <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
John Crispin 2019-12-17 15:19:18 +01:00 • committed by Greg Kroah-Hartman
commit 92a63a3d99
3 changed files with 81 additions and 0 deletions
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40
net/wireless/nl80211.c
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@ -321,6 +321,13 @@ he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
NLA_POLICY_RANGE(NLA_U8, 1, 20),
};
static const struct nla_policy
he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
[NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
[NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
[NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
};
const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
@ -629,6 +636,7 @@ const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
[NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
[NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
[NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
};
/* policy for the key attributes */
@ -4515,6 +4523,30 @@ static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
return 0;
}
static int nl80211_parse_he_bss_color(struct nlattr *attrs,
struct cfg80211_he_bss_color *he_bss_color)
{
struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
int err;
err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
he_bss_color_policy, NULL);
if (err)
return err;
if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
return -EINVAL;
he_bss_color->color =
nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
he_bss_color->disabled =
nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
he_bss_color->partial =
nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
return 0;
}
static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
const u8 *rates)
{
@ -4806,6 +4838,14 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
goto out;
}
if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
err = nl80211_parse_he_bss_color(
info->attrs[NL80211_ATTR_HE_BSS_COLOR],
&params.he_bss_color);
if (err)
return err;
}
nl80211_calculate_ap_params(&params);
if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])