diff options
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 390e6e0f23ac..7db6079fab04 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -399,6 +399,18 @@ nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + .len = IEEE80211_MAX_DATA_LEN } }; +static const struct nla_policy +sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = { + [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 }, + [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 }, +}; + +static const struct nla_policy +sar_policy[NL80211_SAR_ATTR_MAX + 1] = { + [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE), + [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy), +}; + 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 }, @@ -719,6 +731,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK, NL80211_SAE_PWE_BOTH), [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT }, + [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy), }; /* policy for the key attributes */ @@ -2095,6 +2108,56 @@ fail: return -ENOBUFS; } +static int +nl80211_put_sar_specs(struct cfg80211_registered_device *rdev, + struct sk_buff *msg) +{ + struct nlattr *sar_capa, *specs, *sub_freq_range; + u8 num_freq_ranges; + int i; + + if (!rdev->wiphy.sar_capa) + return 0; + + num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges; + + sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC); + if (!sar_capa) + return -ENOSPC; + + if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type)) + goto fail; + + specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS); + if (!specs) + goto fail; + + /* report supported freq_ranges */ + for (i = 0; i < num_freq_ranges; i++) { + sub_freq_range = nla_nest_start(msg, i + 1); + if (!sub_freq_range) + goto fail; + + if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ, + rdev->wiphy.sar_capa->freq_ranges[i].start_freq)) + goto fail; + + if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ, + rdev->wiphy.sar_capa->freq_ranges[i].end_freq)) + goto fail; + + nla_nest_end(msg, sub_freq_range); + } + + nla_nest_end(msg, specs); + nla_nest_end(msg, sar_capa); + + return 0; +fail: + nla_nest_cancel(msg, sar_capa); + return -ENOBUFS; +} + struct nl80211_dump_wiphy_state { s64 filter_wiphy; long start; @@ -2344,6 +2407,8 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST); CMD(update_connect_params, UPDATE_CONNECT_PARAMS); CMD(update_ft_ies, UPDATE_FT_IES); + if (rdev->wiphy.sar_capa) + CMD(set_sar_specs, SET_SAR_SPECS); } #undef CMD @@ -2669,6 +2734,11 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, if (nl80211_put_tid_config_support(rdev, msg)) goto nla_put_failure; + state->split_start++; + break; + case 16: + if (nl80211_put_sar_specs(rdev, msg)) + goto nla_put_failure; /* done */ state->split_start = 0; @@ -14668,6 +14738,111 @@ static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, } } +static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev, + struct cfg80211_sar_specs *sar_specs, + struct nlattr *spec[], int index) +{ + u32 range_index, i; + + if (!sar_specs || !spec) + return -EINVAL; + + if (!spec[NL80211_SAR_ATTR_SPECS_POWER] || + !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]) + return -EINVAL; + + range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]); + + /* check if range_index exceeds num_freq_ranges */ + if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges) + return -EINVAL; + + /* check if range_index duplicates */ + for (i = 0; i < index; i++) { + if (sar_specs->sub_specs[i].freq_range_index == range_index) + return -EINVAL; + } + + sar_specs->sub_specs[index].power = + nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]); + + sar_specs->sub_specs[index].freq_range_index = range_index; + + return 0; +} + +static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1]; + struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1]; + struct cfg80211_sar_specs *sar_spec; + enum nl80211_sar_type type; + struct nlattr *spec_list; + u32 specs; + int rem, err; + + if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs) + return -EOPNOTSUPP; + + if (!info->attrs[NL80211_ATTR_SAR_SPEC]) + return -EINVAL; + + nla_parse_nested(tb, NL80211_SAR_ATTR_MAX, + info->attrs[NL80211_ATTR_SAR_SPEC], + NULL, NULL); + + if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS]) + return -EINVAL; + + type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]); + if (type != rdev->wiphy.sar_capa->type) + return -EINVAL; + + specs = 0; + nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) + specs++; + + if (specs > rdev->wiphy.sar_capa->num_freq_ranges) + return -EINVAL; + + sar_spec = kzalloc(sizeof(*sar_spec) + + specs * sizeof(struct cfg80211_sar_sub_specs), + GFP_KERNEL); + if (!sar_spec) + return -ENOMEM; + + sar_spec->type = type; + specs = 0; + nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) { + nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX, + spec_list, NULL, NULL); + + switch (type) { + case NL80211_SAR_TYPE_POWER: + if (nl80211_set_sar_sub_specs(rdev, sar_spec, + spec, specs)) { + err = -EINVAL; + goto error; + } + break; + default: + err = -EINVAL; + goto error; + } + specs++; + } + + sar_spec->num_sub_specs = specs; + + rdev->cur_cmd_info = info; + err = rdev_set_sar_specs(rdev, sar_spec); + rdev->cur_cmd_info = NULL; +error: + kfree(sar_spec); + return err; +} + static const struct genl_ops nl80211_ops[] = { { .cmd = NL80211_CMD_GET_WIPHY, @@ -15521,6 +15696,14 @@ static const struct genl_small_ops nl80211_small_ops[] = { .internal_flags = NL80211_FLAG_NEED_NETDEV | NL80211_FLAG_NEED_RTNL, }, + { + .cmd = NL80211_CMD_SET_SAR_SPECS, + .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, + .doit = nl80211_set_sar_specs, + .flags = GENL_UNS_ADMIN_PERM, + .internal_flags = NL80211_FLAG_NEED_WIPHY | + NL80211_FLAG_NEED_RTNL, + }, }; static struct genl_family nl80211_fam __ro_after_init = { |