Return-path: Received: from smtp3-g21.free.fr ([212.27.42.3]:53948 "EHLO smtp3-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757814Ab0ELVQJ (ORCPT ); Wed, 12 May 2010 17:16:09 -0400 From: Benoit Papillault To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Benoit Papillault Subject: [PATCH] mac80211: Move part of the MLME code to helper functions Date: Wed, 12 May 2010 23:07:38 +0200 Message-Id: <1273698460-18061-2-git-send-email-benoit.papillault@free.fr> In-Reply-To: <1273698460-18061-1-git-send-email-benoit.papillault@free.fr> References: <1273698460-18061-1-git-send-email-benoit.papillault@free.fr> Sender: linux-wireless-owner@vger.kernel.org List-ID: We moved code parsing the HT Operation IE to get the associated channel type and the HT Capabilities IE generation code to util.c. This is a preliminary step that will be used by HT IBSS code later. Signed-off-by: Benoit Papillault --- net/mac80211/ieee80211_i.h | 12 +++ net/mac80211/mlme.c | 20 +----- net/mac80211/util.c | 179 ++++++++++++++++++++++++++++++++++++++------ net/mac80211/work.c | 96 ----------------------- 4 files changed, 170 insertions(+), 137 deletions(-) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 69e7f41..742e12b 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1215,6 +1215,18 @@ size_t ieee80211_ie_split(const u8 *ies, size_t ielen, const u8 *ids, int n_ids, size_t offset); size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); +enum nl80211_channel_type ieee80211_channel_type_from_ht_info( + struct ieee80211_local *local, + struct ieee80211_ht_info *hti, u16 ap_ht_cap_flags); + +void ieee80211_add_ht_ie(struct sk_buff *skb, const u8 *ht_info_ie, + struct ieee80211_supported_band *sband, + struct ieee80211_channel *channel, + enum ieee80211_smps_mode smps); + +u8 *ieee80211_add_ht_cap(u8 *pos, + struct ieee80211_supported_band *sband); + /* internal work items */ void ieee80211_work_init(struct ieee80211_local *local); void ieee80211_add_work(struct ieee80211_work *wk); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 3093e46..55d96a6 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -155,24 +155,8 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, enable_ht = false; if (enable_ht) { - channel_type = NL80211_CHAN_HT20; - - if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) && - (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) && - (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { - switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { - case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: - if (!(local->hw.conf.channel->flags & - IEEE80211_CHAN_NO_HT40PLUS)) - channel_type = NL80211_CHAN_HT40PLUS; - break; - case IEEE80211_HT_PARAM_CHA_SEC_BELOW: - if (!(local->hw.conf.channel->flags & - IEEE80211_CHAN_NO_HT40MINUS)) - channel_type = NL80211_CHAN_HT40MINUS; - break; - } - } + channel_type = ieee80211_channel_type_from_ht_info(local, + hti, ap_ht_cap_flags); } if (local->tmp_channel) diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 5b79d55..4a76fa5 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -965,29 +965,7 @@ int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, offset = noffset; } - if (sband->ht_cap.ht_supported) { - u16 cap = sband->ht_cap.cap; - __le16 tmp; - - if (ieee80211_disable_40mhz_24ghz && - sband->band == IEEE80211_BAND_2GHZ) { - cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; - cap &= ~IEEE80211_HT_CAP_SGI_40; - } - - *pos++ = WLAN_EID_HT_CAPABILITY; - *pos++ = sizeof(struct ieee80211_ht_cap); - memset(pos, 0, sizeof(struct ieee80211_ht_cap)); - tmp = cpu_to_le16(cap); - memcpy(pos, &tmp, sizeof(u16)); - pos += sizeof(u16); - *pos++ = sband->ht_cap.ampdu_factor | - (sband->ht_cap.ampdu_density << - IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); - memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); - pos += sizeof(sband->ht_cap.mcs); - pos += 2 + 4 + 1; /* ext info, BF cap, antsel */ - } + pos = ieee80211_add_ht_cap(pos, sband); /* * If adding more here, adjust code in main.c @@ -1389,3 +1367,158 @@ size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset) return pos; } + +enum nl80211_channel_type ieee80211_channel_type_from_ht_info( + struct ieee80211_local *local, + struct ieee80211_ht_info *hti, u16 ap_ht_cap_flags) +{ + struct ieee80211_supported_band *sband; + enum nl80211_channel_type channel_type = NL80211_CHAN_HT20; + + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + + if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) && + (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) && + (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { + switch (hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { + case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: + if (!(local->hw.conf.channel->flags & + IEEE80211_CHAN_NO_HT40PLUS)) + channel_type = NL80211_CHAN_HT40PLUS; + break; + case IEEE80211_HT_PARAM_CHA_SEC_BELOW: + if (!(local->hw.conf.channel->flags & + IEEE80211_CHAN_NO_HT40MINUS)) + channel_type = NL80211_CHAN_HT40MINUS; + break; + } + } + + return channel_type; +} + +u8 *ieee80211_add_ht_cap(u8 *pos, + struct ieee80211_supported_band *sband) +{ + if (sband->ht_cap.ht_supported) { + u16 cap = sband->ht_cap.cap; + __le16 tmp; + + if (ieee80211_disable_40mhz_24ghz && + sband->band == IEEE80211_BAND_2GHZ) { + cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; + cap &= ~IEEE80211_HT_CAP_SGI_40; + } + + *pos++ = WLAN_EID_HT_CAPABILITY; + *pos++ = sizeof(struct ieee80211_ht_cap); + memset(pos, 0, sizeof(struct ieee80211_ht_cap)); + tmp = cpu_to_le16(cap); + memcpy(pos, &tmp, sizeof(u16)); + pos += sizeof(u16); + *pos++ = sband->ht_cap.ampdu_factor | + (sband->ht_cap.ampdu_density << + IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); + memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); + pos += sizeof(sband->ht_cap.mcs); + pos += 2 + 4 + 1; /* ext info, BF cap, antsel */ + } + + return pos; +} + +void ieee80211_add_ht_ie(struct sk_buff *skb, const u8 *ht_info_ie, + struct ieee80211_supported_band *sband, + struct ieee80211_channel *channel, + enum ieee80211_smps_mode smps) +{ + struct ieee80211_ht_info *ht_info; + u8 *pos; + u32 flags = channel->flags; + u16 cap = sband->ht_cap.cap; + __le16 tmp; + + if (!sband->ht_cap.ht_supported) + return; + + if (!ht_info_ie) + return; + + if (ht_info_ie[1] < sizeof(struct ieee80211_ht_info)) + return; + + ht_info = (struct ieee80211_ht_info *)(ht_info_ie + 2); + + /* determine capability flags */ + + if (ieee80211_disable_40mhz_24ghz && + sband->band == IEEE80211_BAND_2GHZ) { + cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; + cap &= ~IEEE80211_HT_CAP_SGI_40; + } + + switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { + case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: + if (flags & IEEE80211_CHAN_NO_HT40PLUS) { + cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; + cap &= ~IEEE80211_HT_CAP_SGI_40; + } + break; + case IEEE80211_HT_PARAM_CHA_SEC_BELOW: + if (flags & IEEE80211_CHAN_NO_HT40MINUS) { + cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; + cap &= ~IEEE80211_HT_CAP_SGI_40; + } + break; + } + + /* set SM PS mode properly */ + cap &= ~IEEE80211_HT_CAP_SM_PS; + switch (smps) { + case IEEE80211_SMPS_AUTOMATIC: + case IEEE80211_SMPS_NUM_MODES: + WARN_ON(1); + case IEEE80211_SMPS_OFF: + cap |= WLAN_HT_CAP_SM_PS_DISABLED << + IEEE80211_HT_CAP_SM_PS_SHIFT; + break; + case IEEE80211_SMPS_STATIC: + cap |= WLAN_HT_CAP_SM_PS_STATIC << + IEEE80211_HT_CAP_SM_PS_SHIFT; + break; + case IEEE80211_SMPS_DYNAMIC: + cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << + IEEE80211_HT_CAP_SM_PS_SHIFT; + break; + } + + /* reserve and fill IE */ + + pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); + *pos++ = WLAN_EID_HT_CAPABILITY; + *pos++ = sizeof(struct ieee80211_ht_cap); + memset(pos, 0, sizeof(struct ieee80211_ht_cap)); + + /* capability flags */ + tmp = cpu_to_le16(cap); + memcpy(pos, &tmp, sizeof(u16)); + pos += sizeof(u16); + + /* AMPDU parameters */ + *pos++ = sband->ht_cap.ampdu_factor | + (sband->ht_cap.ampdu_density << + IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); + + /* MCS set */ + memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); + pos += sizeof(sband->ht_cap.mcs); + + /* extended capabilities */ + pos += sizeof(__le16); + + /* BF capabilities */ + pos += sizeof(__le32); + + /* antenna selection */ + pos += sizeof(u8); +} diff --git a/net/mac80211/work.c b/net/mac80211/work.c index 3dd0760..df6940d 100644 --- a/net/mac80211/work.c +++ b/net/mac80211/work.c @@ -101,102 +101,6 @@ static int ieee80211_compatible_rates(const u8 *supp_rates, int supp_rates_len, /* frame sending functions */ -static void ieee80211_add_ht_ie(struct sk_buff *skb, const u8 *ht_info_ie, - struct ieee80211_supported_band *sband, - struct ieee80211_channel *channel, - enum ieee80211_smps_mode smps) -{ - struct ieee80211_ht_info *ht_info; - u8 *pos; - u32 flags = channel->flags; - u16 cap = sband->ht_cap.cap; - __le16 tmp; - - if (!sband->ht_cap.ht_supported) - return; - - if (!ht_info_ie) - return; - - if (ht_info_ie[1] < sizeof(struct ieee80211_ht_info)) - return; - - ht_info = (struct ieee80211_ht_info *)(ht_info_ie + 2); - - /* determine capability flags */ - - if (ieee80211_disable_40mhz_24ghz && - sband->band == IEEE80211_BAND_2GHZ) { - cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; - cap &= ~IEEE80211_HT_CAP_SGI_40; - } - - switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { - case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: - if (flags & IEEE80211_CHAN_NO_HT40PLUS) { - cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; - cap &= ~IEEE80211_HT_CAP_SGI_40; - } - break; - case IEEE80211_HT_PARAM_CHA_SEC_BELOW: - if (flags & IEEE80211_CHAN_NO_HT40MINUS) { - cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; - cap &= ~IEEE80211_HT_CAP_SGI_40; - } - break; - } - - /* set SM PS mode properly */ - cap &= ~IEEE80211_HT_CAP_SM_PS; - switch (smps) { - case IEEE80211_SMPS_AUTOMATIC: - case IEEE80211_SMPS_NUM_MODES: - WARN_ON(1); - case IEEE80211_SMPS_OFF: - cap |= WLAN_HT_CAP_SM_PS_DISABLED << - IEEE80211_HT_CAP_SM_PS_SHIFT; - break; - case IEEE80211_SMPS_STATIC: - cap |= WLAN_HT_CAP_SM_PS_STATIC << - IEEE80211_HT_CAP_SM_PS_SHIFT; - break; - case IEEE80211_SMPS_DYNAMIC: - cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << - IEEE80211_HT_CAP_SM_PS_SHIFT; - break; - } - - /* reserve and fill IE */ - - pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); - *pos++ = WLAN_EID_HT_CAPABILITY; - *pos++ = sizeof(struct ieee80211_ht_cap); - memset(pos, 0, sizeof(struct ieee80211_ht_cap)); - - /* capability flags */ - tmp = cpu_to_le16(cap); - memcpy(pos, &tmp, sizeof(u16)); - pos += sizeof(u16); - - /* AMPDU parameters */ - *pos++ = sband->ht_cap.ampdu_factor | - (sband->ht_cap.ampdu_density << - IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT); - - /* MCS set */ - memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); - pos += sizeof(sband->ht_cap.mcs); - - /* extended capabilities */ - pos += sizeof(__le16); - - /* BF capabilities */ - pos += sizeof(__le32); - - /* antenna selection */ - pos += sizeof(u8); -} - static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, struct ieee80211_work *wk) { -- 1.5.6.5