[10/10] wifi: mac80211: convert ieee80211_ie_build_eht_cap() to SKB use

Message ID	20240129202041.ece9769e3c94.Ibd17bea6311f0c7ba56f6c1803fa3208abaaebb9@changeid
State	New
Headers	show Received: from sipsolutions.net (s3.sipsolutions.net [168.119.38.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E94D276041 for <linux-wireless@vger.kernel.org>; Mon, 29 Jan 2024 19:20:54 +0000 (UTC) From: Johannes Berg <johannes@sipsolutions.net> To: linux-wireless@vger.kernel.org Cc: Johannes Berg <johannes.berg@intel.com> Subject: [PATCH 10/10] wifi: mac80211: convert ieee80211_ie_build_eht_cap() to SKB use Date: Mon, 29 Jan 2024 20:19:36 +0100 Message-ID: <20240129202041.ece9769e3c94.Ibd17bea6311f0c7ba56f6c1803fa3208abaaebb9@changeid> In-Reply-To: <20240129192041.58481-12-johannes@sipsolutions.net> References: <20240129192041.58481-12-johannes@sipsolutions.net> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	wifi: mac80211: initial element helper cleanups \| expand [00/10] wifi: mac80211: initial element helper cleanups [01/10] wifi: mac80211: simplify HE/EHT element length functions [02/10] wifi: mac80211: adjust EHT capa when lowering bandwidth [03/10] wifi: mac80211: limit HE RU capabilities when limiting bandwidth [04/10] wifi: mac80211: rename ieee80211_ie_build_he_6ghz_cap() [05/10] wifi: mac80211: tdls: use ieee80211_put_he_6ghz_cap() [06/10] wifi: mac80211: simplify adding supported rates [07/10] wifi: mac80211: start building elements in SKBs [08/10] wifi: mac80211: move element parsing to a new file [09/10] wifi: mac80211: convert ieee80211_ie_build_he_cap() to SKB use [10/10] wifi: mac80211: convert ieee80211_ie_build_eht_cap() to SKB use

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index de0fdbd366c5..f3edb1a148a7 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -2527,6 +2527,10 @@ int ieee80211_put_he_cap(struct sk_buff *skb, int ieee80211_put_he_6ghz_cap(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata, enum ieee80211_smps_mode smps_mode); +int ieee80211_put_eht_cap(struct sk_buff *skb, + struct ieee80211_sub_if_data *sdata, + const struct ieee80211_supported_band *sband, + const struct ieee80211_conn_settings *conn); /* channel management */ bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, @@ -2651,12 +2655,6 @@ void ieee80211_init_frag_cache(struct ieee80211_fragment_cache *cache); void ieee80211_destroy_frag_cache(struct ieee80211_fragment_cache *cache); u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata); -u8 *ieee80211_ie_build_eht_cap(const struct ieee80211_conn_settings *conn, - u8 *pos, - const struct ieee80211_sta_he_cap *he_cap, - const struct ieee80211_sta_eht_cap *eht_cap, - u8 *end, - bool for_ap); void ieee80211_eht_cap_ie_to_sta_eht_cap(struct ieee80211_sub_if_data *sdata, diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index cb217657c42e..49f79512c144 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -636,31 +636,18 @@ int mesh_add_he_6ghz_cap_ie(struct ieee80211_sub_if_data *sdata, int mesh_add_eht_cap_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, u8 ie_len) { - const struct ieee80211_sta_he_cap *he_cap; - const struct ieee80211_sta_eht_cap *eht_cap; struct ieee80211_supported_band *sband; - u8 *pos; sband = ieee80211_get_sband(sdata); if (!sband) return -EINVAL; - he_cap = ieee80211_get_he_iftype_cap(sband, NL80211_IFTYPE_MESH_POINT); - eht_cap = ieee80211_get_eht_iftype_cap(sband, NL80211_IFTYPE_MESH_POINT); - if (!he_cap || !eht_cap || - sdata->vif.bss_conf.chanreq.oper.width == NL80211_CHAN_WIDTH_20_NOHT || + if (sdata->vif.bss_conf.chanreq.oper.width == NL80211_CHAN_WIDTH_20_NOHT || sdata->vif.bss_conf.chanreq.oper.width == NL80211_CHAN_WIDTH_5 || sdata->vif.bss_conf.chanreq.oper.width == NL80211_CHAN_WIDTH_10) return 0; - if (skb_tailroom(skb) < ie_len) - return -ENOMEM; - - pos = skb_put(skb, ie_len); - ieee80211_ie_build_eht_cap(NULL, pos, he_cap, eht_cap, pos + ie_len, - false); - - return 0; + return ieee80211_put_eht_cap(skb, sdata, sband, NULL); } int mesh_add_eht_oper_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index fcef7ef68389..c21dbc5fed13 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1038,41 +1038,6 @@ static bool ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, return mu_mimo_owner; } -static void ieee80211_add_eht_ie(struct ieee80211_sub_if_data *sdata, - struct sk_buff *skb, - struct ieee80211_supported_band *sband, - const struct ieee80211_conn_settings *conn) -{ - u8 *pos, *pre_eht_pos; - const struct ieee80211_sta_he_cap *he_cap; - const struct ieee80211_sta_eht_cap *eht_cap; - u8 eht_cap_size; - - he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); - eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); - - /* - * EHT capabilities element is only added if the HE capabilities element - * was added so assume that 'he_cap' is valid and don't check it. - */ - if (WARN_ON(!he_cap || !eht_cap)) - return; - - eht_cap_size = - 2 + 1 + sizeof(eht_cap->eht_cap_elem) + - ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, - &eht_cap->eht_cap_elem, - false) + - ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], - eht_cap->eht_cap_elem.phy_cap_info); - pos = skb_put(skb, eht_cap_size); - pre_eht_pos = pos; - pos = ieee80211_ie_build_eht_cap(conn, pos, he_cap, eht_cap, - pos + eht_cap_size, false); - /* trim excess if any */ - skb_trim(skb, skb->len - (pre_eht_pos + eht_cap_size - pos)); -} - static void ieee80211_assoc_add_rates(struct sk_buff *skb, enum nl80211_chan_width width, struct ieee80211_supported_band *sband, @@ -1393,8 +1358,8 @@ static size_t ieee80211_assoc_link_elems(struct ieee80211_sub_if_data *sdata, present_elems = NULL; if (assoc_data->link[link_id].conn.mode >= IEEE80211_CONN_MODE_EHT) - ieee80211_add_eht_ie(sdata, skb, sband, - &assoc_data->link[link_id].conn); + ieee80211_put_eht_cap(skb, sdata, sband, + &assoc_data->link[link_id].conn); if (sband->band == NL80211_BAND_S1GHZ) { ieee80211_add_aid_request_ie(sdata, skb); diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c index 3f9c2b2771c6..42d9c06cbb84 100644 --- a/net/mac80211/tdls.c +++ b/net/mac80211/tdls.c @@ -575,22 +575,10 @@ ieee80211_tdls_add_setup_start_ies(struct ieee80211_link_data *link, } /* build the EHT-cap from sband */ - if (he_cap && eht_cap && - (action_code == WLAN_TDLS_SETUP_REQUEST || - action_code == WLAN_TDLS_SETUP_RESPONSE || - action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES)) { - u8 cap_size; - - cap_size = - 2 + 1 + sizeof(eht_cap->eht_cap_elem) + - ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, - &eht_cap->eht_cap_elem, false) + - ieee80211_eht_ppe_size(eht_cap->eht_ppe_thres[0], - eht_cap->eht_cap_elem.phy_cap_info); - pos = skb_put(skb, cap_size); - ieee80211_ie_build_eht_cap(NULL, pos, he_cap, eht_cap, - pos + cap_size, false); - } + if (action_code == WLAN_TDLS_SETUP_REQUEST || + action_code == WLAN_TDLS_SETUP_RESPONSE || + action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) + ieee80211_put_eht_cap(skb, sdata, sband, NULL); /* add any remaining IEs */ if (extra_ies_len) { diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 4dcb62e9d4c6..627bd5a8bda5 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1199,8 +1199,6 @@ static int ieee80211_put_preq_ies_band(struct sk_buff *skb, { struct ieee80211_local *local = sdata->local; struct ieee80211_supported_band *sband; - const struct ieee80211_sta_he_cap *he_cap; - const struct ieee80211_sta_eht_cap *eht_cap; int i, err; size_t noffset; u32 rate_flags; @@ -1359,22 +1357,12 @@ static int ieee80211_put_preq_ies_band(struct sk_buff *skb, return err; } - he_cap = ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); - eht_cap = ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); - - if (eht_cap && - cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), + if (cfg80211_any_usable_channels(local->hw.wiphy, BIT(sband->band), IEEE80211_CHAN_NO_HE | IEEE80211_CHAN_NO_EHT)) { - u8 *pos = skb_tail_pointer(skb); - u8 *end = pos + skb_tailroom(skb); - - pos = ieee80211_ie_build_eht_cap(NULL, pos, he_cap, eht_cap, - end, - sdata->vif.type == NL80211_IFTYPE_AP); - if (!pos) - return -ENOBUFS; - skb_put(skb, pos - skb_tail_pointer(skb)); + err = ieee80211_put_eht_cap(skb, sdata, sband, NULL); + if (err) + return err; } err = ieee80211_put_he_6ghz_cap(skb, sdata, IEEE80211_SMPS_OFF); @@ -4175,7 +4163,7 @@ u16 ieee80211_encode_usf(int listen_interval) return (u16) listen_interval; } -/* this may return more than ieee80211_ie_build_eht_cap() will need */ +/* this may return more than ieee80211_put_eht_cap() will need */ u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata) { const struct ieee80211_sta_he_cap *he_cap; @@ -4205,25 +4193,28 @@ u8 ieee80211_ie_len_eht_cap(struct ieee80211_sub_if_data *sdata) return 0; } -u8 *ieee80211_ie_build_eht_cap(const struct ieee80211_conn_settings *conn, - u8 *pos, - const struct ieee80211_sta_he_cap *he_cap, - const struct ieee80211_sta_eht_cap *eht_cap, - u8 *end, bool for_ap) +int ieee80211_put_eht_cap(struct sk_buff *skb, + struct ieee80211_sub_if_data *sdata, + const struct ieee80211_supported_band *sband, + const struct ieee80211_conn_settings *conn) { - struct ieee80211_eht_cap_elem_fixed fixed, *out; + const struct ieee80211_sta_he_cap *he_cap = + ieee80211_get_he_iftype_cap_vif(sband, &sdata->vif); + const struct ieee80211_sta_eht_cap *eht_cap = + ieee80211_get_eht_iftype_cap_vif(sband, &sdata->vif); + bool for_ap = sdata->vif.type == NL80211_IFTYPE_AP; + struct ieee80211_eht_cap_elem_fixed fixed; struct ieee80211_he_cap_elem he; u8 mcs_nss_len, ppet_len; u8 orig_mcs_nss_len; u8 ie_len; - u8 *orig_pos = pos; if (!conn) conn = &ieee80211_conn_settings_unlimited; /* Make sure we have place for the IE */ if (!he_cap || !eht_cap) - return orig_pos; + return 0; orig_mcs_nss_len = ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem, &eht_cap->eht_cap_elem, @@ -4266,16 +4257,13 @@ u8 *ieee80211_ie_build_eht_cap(const struct ieee80211_conn_settings *conn, fixed.phy_cap_info); ie_len = 2 + 1 + sizeof(eht_cap->eht_cap_elem) + mcs_nss_len + ppet_len; - if ((end - pos) < ie_len) - return orig_pos; + if (skb_tailroom(skb) < ie_len) + return -ENOBUFS; - *pos++ = WLAN_EID_EXTENSION; - *pos++ = ie_len - 2; - *pos++ = WLAN_EID_EXT_EHT_CAPABILITY; - - out = (void *)pos; - *out = fixed; - pos += sizeof(*out); + skb_put_u8(skb, WLAN_EID_EXTENSION); + skb_put_u8(skb, ie_len - 2); + skb_put_u8(skb, WLAN_EID_EXT_EHT_CAPABILITY); + skb_put_data(skb, &fixed, sizeof(fixed)); if (mcs_nss_len == 4 && orig_mcs_nss_len != 4) { /* @@ -4284,21 +4272,18 @@ u8 *ieee80211_ie_build_eht_cap(const struct ieee80211_conn_settings *conn, * the groups 0-7, 8-9, 10-11, 12-13 rather than just 0-9, * 10-11, 12-13. Thus, use 0-9 for 0-7 and 8-9. */ - *pos++ = eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss; - *pos++ = eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss; - *pos++ = eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs11_max_nss; - *pos++ = eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs13_max_nss; + skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); + skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs9_max_nss); + skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs11_max_nss); + skb_put_u8(skb, eht_cap->eht_mcs_nss_supp.bw._80.rx_tx_mcs13_max_nss); } else { - memcpy(pos, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); - pos += mcs_nss_len; + skb_put_data(skb, &eht_cap->eht_mcs_nss_supp, mcs_nss_len); } - if (ppet_len) { - memcpy(pos, &eht_cap->eht_ppe_thres, ppet_len); - pos += ppet_len; - } + if (ppet_len) + skb_put_data(skb, &eht_cap->eht_ppe_thres, ppet_len); - return pos; + return 0; } const char *ieee80211_conn_mode_str(enum ieee80211_conn_mode mode)

[10/10] wifi: mac80211: convert ieee80211_ie_build_eht_cap() to SKB use

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