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mac80211_hwsim: allow setting iftype support
The mac80211_hwsim driver hard codes its supported interface types. For testing purposes it would be valuable to allow changing these supported types in order to simulate actual drivers than support a limited set of iftypes. A new attribute was added to allow this: - HWSIM_ATTR_IFTYPE_SUPPORT A u32 bit field of supported NL80211_IFTYPE_* bits This will only enable/disable iftypes that mac80211_hwsim already supports. In order to accomplish this, the ieee80211_iface_limit structure needed to be built dynamically to only include limit rules for iftypes that the user requested to enable. Signed-off-by: James Prestwood <james.prestwood@linux.intel.com> [fix some indentation, add netlink error string] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
James Prestwood
Johannes Berg
parent
2f98abb17d
commit
99e3a44bac
@ -451,48 +451,6 @@ static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
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{ .vendor_id = OUI_QCA, .subcmd = 1 },
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};
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static const struct ieee80211_iface_limit hwsim_if_limits[] = {
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{ .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
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{ .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
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BIT(NL80211_IFTYPE_P2P_CLIENT) |
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#ifdef CONFIG_MAC80211_MESH
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BIT(NL80211_IFTYPE_MESH_POINT) |
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#endif
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BIT(NL80211_IFTYPE_AP) |
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BIT(NL80211_IFTYPE_P2P_GO) },
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/* must be last, see hwsim_if_comb */
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{ .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
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};
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static const struct ieee80211_iface_combination hwsim_if_comb[] = {
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{
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.limits = hwsim_if_limits,
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/* remove the last entry which is P2P_DEVICE */
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.n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
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.max_interfaces = 2048,
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.num_different_channels = 1,
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.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
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BIT(NL80211_CHAN_WIDTH_20) |
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BIT(NL80211_CHAN_WIDTH_40) |
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BIT(NL80211_CHAN_WIDTH_80) |
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BIT(NL80211_CHAN_WIDTH_160),
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},
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};
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static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
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{
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.limits = hwsim_if_limits,
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.n_limits = ARRAY_SIZE(hwsim_if_limits),
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.max_interfaces = 2048,
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.num_different_channels = 1,
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.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
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BIT(NL80211_CHAN_WIDTH_20) |
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BIT(NL80211_CHAN_WIDTH_40) |
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BIT(NL80211_CHAN_WIDTH_80) |
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BIT(NL80211_CHAN_WIDTH_160),
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},
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};
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static spinlock_t hwsim_radio_lock;
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static LIST_HEAD(hwsim_radios);
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static struct rhashtable hwsim_radios_rht;
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@ -515,6 +473,8 @@ struct mac80211_hwsim_data {
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struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
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struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
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struct ieee80211_iface_combination if_combination;
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struct ieee80211_iface_limit if_limits[3];
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int n_if_limits;
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struct mac_address addresses[2];
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int channels, idx;
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@ -642,6 +602,7 @@ static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
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[HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
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[HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
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[HWSIM_ATTR_PERM_ADDR] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
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[HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
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};
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static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
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@ -2414,6 +2375,7 @@ struct hwsim_new_radio_params {
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const char *hwname;
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bool no_vif;
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const u8 *perm_addr;
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u32 iftypes;
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};
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static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
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@ -2630,6 +2592,27 @@ static void mac80211_hswim_he_capab(struct ieee80211_supported_band *sband)
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sband->n_iftype_data = 1;
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}
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#ifdef CONFIG_MAC80211_MESH
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#define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
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#else
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#define HWSIM_MESH_BIT 0
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#endif
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#define HWSIM_DEFAULT_IF_LIMIT \
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(BIT(NL80211_IFTYPE_STATION) | \
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BIT(NL80211_IFTYPE_P2P_CLIENT) | \
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BIT(NL80211_IFTYPE_AP) | \
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BIT(NL80211_IFTYPE_P2P_GO) | \
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HWSIM_MESH_BIT)
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#define HWSIM_IFTYPE_SUPPORT_MASK \
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(BIT(NL80211_IFTYPE_STATION) | \
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BIT(NL80211_IFTYPE_AP) | \
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BIT(NL80211_IFTYPE_P2P_CLIENT) | \
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BIT(NL80211_IFTYPE_P2P_GO) | \
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BIT(NL80211_IFTYPE_ADHOC) | \
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BIT(NL80211_IFTYPE_MESH_POINT))
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static int mac80211_hwsim_new_radio(struct genl_info *info,
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struct hwsim_new_radio_params *param)
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{
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@ -2641,6 +2624,7 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
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const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
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struct net *net;
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int idx;
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int n_limits = 0;
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if (WARN_ON(param->channels > 1 && !param->use_chanctx))
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return -EINVAL;
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@ -2716,43 +2700,60 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
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if (info)
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data->portid = info->snd_portid;
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/* setup interface limits, only on interface types we support */
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if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
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data->if_limits[n_limits].max = 1;
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data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
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n_limits++;
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}
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if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
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data->if_limits[n_limits].max = 2048;
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/*
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* For this case, we may only support a subset of
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* HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
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* bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
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*/
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data->if_limits[n_limits].types =
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HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
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n_limits++;
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}
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if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
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data->if_limits[n_limits].max = 1;
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data->if_limits[n_limits].types =
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BIT(NL80211_IFTYPE_P2P_DEVICE);
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n_limits++;
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}
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if (data->use_chanctx) {
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hw->wiphy->max_scan_ssids = 255;
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hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
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hw->wiphy->max_remain_on_channel_duration = 1000;
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hw->wiphy->iface_combinations = &data->if_combination;
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if (param->p2p_device)
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data->if_combination = hwsim_if_comb_p2p_dev[0];
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else
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data->if_combination = hwsim_if_comb[0];
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hw->wiphy->n_iface_combinations = 1;
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/* For channels > 1 DFS is not allowed */
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data->if_combination.radar_detect_widths = 0;
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data->if_combination.num_different_channels = data->channels;
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} else if (param->p2p_device) {
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hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
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hw->wiphy->n_iface_combinations =
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ARRAY_SIZE(hwsim_if_comb_p2p_dev);
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} else {
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hw->wiphy->iface_combinations = hwsim_if_comb;
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hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
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}
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data->if_combination.n_limits = n_limits;
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data->if_combination.max_interfaces = 2048;
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data->if_combination.num_different_channels = 1;
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data->if_combination.radar_detect_widths =
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BIT(NL80211_CHAN_WIDTH_20_NOHT) |
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BIT(NL80211_CHAN_WIDTH_20) |
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BIT(NL80211_CHAN_WIDTH_40) |
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BIT(NL80211_CHAN_WIDTH_80) |
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BIT(NL80211_CHAN_WIDTH_160);
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data->if_combination.limits = data->if_limits;
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hw->wiphy->iface_combinations = &data->if_combination;
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hw->wiphy->n_iface_combinations = 1;
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INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
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INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
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INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
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hw->queues = 5;
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hw->offchannel_tx_hw_queue = 4;
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hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
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BIT(NL80211_IFTYPE_AP) |
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BIT(NL80211_IFTYPE_P2P_CLIENT) |
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BIT(NL80211_IFTYPE_P2P_GO) |
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BIT(NL80211_IFTYPE_ADHOC) |
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BIT(NL80211_IFTYPE_MESH_POINT);
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if (param->p2p_device)
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hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
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ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
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ieee80211_hw_set(hw, CHANCTX_STA_CSA);
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@ -2778,6 +2779,8 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
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NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
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wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
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hw->wiphy->interface_modes = param->iftypes;
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/* ask mac80211 to reserve space for magic */
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hw->vif_data_size = sizeof(struct hwsim_vif_priv);
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hw->sta_data_size = sizeof(struct hwsim_sta_priv);
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@ -3350,10 +3353,30 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
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return -EINVAL;
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}
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param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
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}
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if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
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param.iftypes =
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nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
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if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
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NL_SET_ERR_MSG_ATTR(info->extack,
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info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
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"cannot support more iftypes than kernel");
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return -EINVAL;
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}
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} else {
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param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
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}
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/* ensure both flag and iftype support is honored */
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if (param.p2p_device ||
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param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
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param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
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param.p2p_device = true;
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}
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if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
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hwname = kasprintf(GFP_KERNEL, "%.*s",
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nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
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@ -132,6 +132,7 @@ enum {
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* @HWSIM_ATTR_TX_INFO_FLAGS: additional flags for corresponding
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* rates of %HWSIM_ATTR_TX_INFO
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* @HWSIM_ATTR_PERM_ADDR: permanent mac address of new radio
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* @HWSIM_ATTR_IFTYPE_SUPPORT: u32 attribute of supported interface types bits
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* @__HWSIM_ATTR_MAX: enum limit
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*/
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@ -160,6 +161,7 @@ enum {
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HWSIM_ATTR_PAD,
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HWSIM_ATTR_TX_INFO_FLAGS,
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HWSIM_ATTR_PERM_ADDR,
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HWSIM_ATTR_IFTYPE_SUPPORT,
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__HWSIM_ATTR_MAX,
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};
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#define HWSIM_ATTR_MAX (__HWSIM_ATTR_MAX - 1)
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