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| author | Aloka Dixit <alokad@codeaurora.org> | 2020-09-11 03:05:29 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2020-09-18 15:06:19 +0300 |
| commit | 291c49ded2fda1fd0d7bd6056de99fe47d2332e6 (patch) | |
| tree | 3c9a4d42c6c260520b06bf676c826f3f16dabae5 /net/wireless/nl80211.c | |
| parent | 5595870f77c7f9de3481b0c0d5ad03176586556e (diff) | |
| download | linux-291c49ded2fda1fd0d7bd6056de99fe47d2332e6.tar.xz | |
nl80211: Add FILS discovery support
FILS discovery attribute, NL80211_ATTR_FILS_DISCOVERY, is nested which
supports following parameters as given in IEEE Std 802.11ai-2016,
Annex C.3 MIB detail:
(1) NL80211_FILS_DISCOVERY_ATTR_INT_MIN - Minimum packet interval
(2) NL80211_FILS_DISCOVERY_ATTR_INT_MAX - Maximum packet interval
(3) NL80211_FILS_DISCOVERY_ATTR_TMPL - Template data
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
Link: https://lore.kernel.org/r/20200805011838.28166-2-alokad@codeaurora.org
[fix attribute and other names, use NLA_RANGE(), use policy only once]
Link: https://lore.kernel.org/r/010101747a7b38a8-306f06b2-9061-4baf-81c1-054a42a18e22-000000@us-west-2.amazonses.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 5d9d51cfc653..afe782887ca9 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -376,6 +376,15 @@ nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = { NLA_POLICY_NESTED(nl80211_txattr_policy), }; +static const struct nla_policy +nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = { + [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000), + [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000), + NLA_POLICY_RANGE(NLA_BINARY, + NL80211_FILS_DISCOVERY_TMPL_MIN_LEN, + IEEE80211_MAX_DATA_LEN), +}; + static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD }, [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, @@ -684,6 +693,8 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED }, [NL80211_ATTR_HE_6GHZ_CAPABILITY] = NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)), + [NL80211_ATTR_FILS_DISCOVERY] = + NLA_POLICY_NESTED(nl80211_fils_discovery_policy), }; /* policy for the key attributes */ @@ -4874,6 +4885,36 @@ static int nl80211_parse_he_bss_color(struct nlattr *attrs, return 0; } +static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev, + struct nlattr *attrs, + struct cfg80211_ap_settings *params) +{ + struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1]; + int ret; + struct cfg80211_fils_discovery *fd = ¶ms->fils_discovery; + + if (!wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_FILS_DISCOVERY)) + return -EINVAL; + + ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs, + NULL, NULL); + if (ret) + return ret; + + if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] || + !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] || + !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]) + return -EINVAL; + + fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]); + fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]); + fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]); + fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]); + + return 0; +} + static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params, const u8 *rates) { @@ -5182,6 +5223,14 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) goto out; } + if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) { + err = nl80211_parse_fils_discovery(rdev, + info->attrs[NL80211_ATTR_FILS_DISCOVERY], + ¶ms); + if (err) + goto out; + } + nl80211_calculate_ap_params(¶ms); if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT]) |