From ee688b000d35f413f33561ec9c7d3355be561e2f Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 24 Jan 2008 19:38:39 +0100 Subject: nl80211: export hardware bitrate/channel capabilities This makes nl80211 export the hardware bitrate/channel capabilities as registered in a wiphy. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) (limited to 'net/wireless/nl80211.c') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index e3a214f63f9..b123f58d390 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -98,6 +98,13 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, struct cfg80211_registered_device *dev) { void *hdr; + struct nlattr *nl_bands, *nl_band; + struct nlattr *nl_freqs, *nl_freq; + struct nlattr *nl_rates, *nl_rate; + enum ieee80211_band band; + struct ieee80211_channel *chan; + struct ieee80211_rate *rate; + int i; hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); if (!hdr) @@ -105,6 +112,73 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx); NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); + + nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); + if (!nl_bands) + goto nla_put_failure; + + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + if (!dev->wiphy.bands[band]) + continue; + + nl_band = nla_nest_start(msg, band); + if (!nl_band) + goto nla_put_failure; + + /* add frequencies */ + nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS); + if (!nl_freqs) + goto nla_put_failure; + + for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) { + nl_freq = nla_nest_start(msg, i); + if (!nl_freq) + goto nla_put_failure; + + chan = &dev->wiphy.bands[band]->channels[i]; + NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_FREQ, + chan->center_freq); + + if (chan->flags & IEEE80211_CHAN_DISABLED) + NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_DISABLED); + if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) + NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN); + if (chan->flags & IEEE80211_CHAN_NO_IBSS) + NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_NO_IBSS); + if (chan->flags & IEEE80211_CHAN_RADAR) + NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR); + + nla_nest_end(msg, nl_freq); + } + + nla_nest_end(msg, nl_freqs); + + /* add bitrates */ + nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); + if (!nl_rates) + goto nla_put_failure; + + for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) { + nl_rate = nla_nest_start(msg, i); + if (!nl_rate) + goto nla_put_failure; + + rate = &dev->wiphy.bands[band]->bitrates[i]; + NLA_PUT_U32(msg, NL80211_BITRATE_ATTR_RATE, + rate->bitrate); + if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) + NLA_PUT_FLAG(msg, + NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE); + + nla_nest_end(msg, nl_rate); + } + + nla_nest_end(msg, nl_rates); + + nla_nest_end(msg, nl_band); + } + nla_nest_end(msg, nl_bands); + return genlmsg_end(msg, hdr); nla_put_failure: -- cgit v1.2.3 From 66f7ac50ed7cc5c19a62bc97e8f6e7891004a03a Mon Sep 17 00:00:00 2001 From: Michael Wu Date: Thu, 31 Jan 2008 19:48:22 +0100 Subject: nl80211: Add monitor interface configuration flags This allows precise control over what a monitor interface shows. Signed-off-by: Michael Wu Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 44 ++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 42 insertions(+), 2 deletions(-) (limited to 'net/wireless/nl80211.c') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index b123f58d390..5b3474798b8 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -82,6 +82,7 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, .len = NL80211_MAX_SUPP_RATES }, [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, + [NL80211_ATTR_MNTR_FLAGS] = { .type = NLA_NESTED }, }; /* message building helper */ @@ -336,12 +337,42 @@ static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) return -ENOBUFS; } +static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { + [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, + [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, + [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, + [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, + [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, +}; + +static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) +{ + struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; + int flag; + + *mntrflags = 0; + + if (!nla) + return -EINVAL; + + if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, + nla, mntr_flags_policy)) + return -EINVAL; + + for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) + if (flags[flag]) + *mntrflags |= (1<attrs[NL80211_ATTR_IFTYPE]) { type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); @@ -362,7 +393,11 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) } rtnl_lock(); - err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, type); + err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? + info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, + &flags); + err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex, + type, err ? NULL : &flags); rtnl_unlock(); unlock: @@ -375,6 +410,7 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) struct cfg80211_registered_device *drv; int err; enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; + u32 flags; if (!info->attrs[NL80211_ATTR_IFNAME]) return -EINVAL; @@ -395,8 +431,12 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) } rtnl_lock(); + err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? + info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, + &flags); err = drv->ops->add_virtual_intf(&drv->wiphy, - nla_data(info->attrs[NL80211_ATTR_IFNAME]), type); + nla_data(info->attrs[NL80211_ATTR_IFNAME]), + type, err ? NULL : &flags); rtnl_unlock(); unlock: -- cgit v1.2.3