mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-19 18:53:52 +08:00
wcn36xx: use dynamic allocation for large variables
clang triggers a warning about oversized stack frames that gcc does not
notice because of slightly different inlining decisions:
ath/wcn36xx/smd.c:1409:5: error: stack frame size of 1040 bytes in function 'wcn36xx_smd_config_bss' [-Werror,-Wframe-larger-than=]
ath/wcn36xx/smd.c:640:5: error: stack frame size of 1032 bytes in function 'wcn36xx_smd_start_hw_scan' [-Werror,-Wframe-larger-than=]
Basically the wcn36xx_hal_start_scan_offload_req_msg,
wcn36xx_hal_config_bss_req_msg_v1, and wcn36xx_hal_config_bss_req_msg
structures are too large to be put on the kernel stack, but small
enough that gcc does not warn about them.
Use kzalloc() to allocate them all. There are similar structures in other
parts of this driver, but they are all smaller, with the next largest
stack frame at 480 bytes for wcn36xx_smd_send_beacon.
Fixes: 8e84c25821 ("wcn36xx: mac80211 driver for Qualcomm WCN3660/WCN3680 hardware")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Arnd Bergmann
Kalle Valo
parent
0e7bf23e49
commit
355cf31912
@ -641,52 +641,58 @@ int wcn36xx_smd_start_hw_scan(struct wcn36xx *wcn, struct ieee80211_vif *vif,
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struct cfg80211_scan_request *req)
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{
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struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
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struct wcn36xx_hal_start_scan_offload_req_msg msg_body;
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struct wcn36xx_hal_start_scan_offload_req_msg *msg_body;
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int ret, i;
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if (req->ie_len > WCN36XX_MAX_SCAN_IE_LEN)
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return -EINVAL;
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mutex_lock(&wcn->hal_mutex);
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INIT_HAL_MSG(msg_body, WCN36XX_HAL_START_SCAN_OFFLOAD_REQ);
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msg_body.scan_type = WCN36XX_HAL_SCAN_TYPE_ACTIVE;
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msg_body.min_ch_time = 30;
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msg_body.max_ch_time = 100;
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msg_body.scan_hidden = 1;
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memcpy(msg_body.mac, vif->addr, ETH_ALEN);
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msg_body.bss_type = vif_priv->bss_type;
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msg_body.p2p_search = vif->p2p;
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msg_body.num_ssid = min_t(u8, req->n_ssids, ARRAY_SIZE(msg_body.ssids));
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for (i = 0; i < msg_body.num_ssid; i++) {
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msg_body.ssids[i].length = min_t(u8, req->ssids[i].ssid_len,
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sizeof(msg_body.ssids[i].ssid));
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memcpy(msg_body.ssids[i].ssid, req->ssids[i].ssid,
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msg_body.ssids[i].length);
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msg_body = kzalloc(sizeof(*msg_body), GFP_KERNEL);
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if (!msg_body) {
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ret = -ENOMEM;
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goto out;
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}
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msg_body.num_channel = min_t(u8, req->n_channels,
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sizeof(msg_body.channels));
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for (i = 0; i < msg_body.num_channel; i++)
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msg_body.channels[i] = req->channels[i]->hw_value;
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INIT_HAL_MSG((*msg_body), WCN36XX_HAL_START_SCAN_OFFLOAD_REQ);
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msg_body.header.len -= WCN36XX_MAX_SCAN_IE_LEN;
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msg_body->scan_type = WCN36XX_HAL_SCAN_TYPE_ACTIVE;
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msg_body->min_ch_time = 30;
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msg_body->max_ch_time = 100;
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msg_body->scan_hidden = 1;
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memcpy(msg_body->mac, vif->addr, ETH_ALEN);
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msg_body->bss_type = vif_priv->bss_type;
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msg_body->p2p_search = vif->p2p;
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msg_body->num_ssid = min_t(u8, req->n_ssids, ARRAY_SIZE(msg_body->ssids));
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for (i = 0; i < msg_body->num_ssid; i++) {
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msg_body->ssids[i].length = min_t(u8, req->ssids[i].ssid_len,
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sizeof(msg_body->ssids[i].ssid));
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memcpy(msg_body->ssids[i].ssid, req->ssids[i].ssid,
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msg_body->ssids[i].length);
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}
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msg_body->num_channel = min_t(u8, req->n_channels,
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sizeof(msg_body->channels));
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for (i = 0; i < msg_body->num_channel; i++)
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msg_body->channels[i] = req->channels[i]->hw_value;
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msg_body->header.len -= WCN36XX_MAX_SCAN_IE_LEN;
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if (req->ie_len > 0) {
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msg_body.ie_len = req->ie_len;
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msg_body.header.len += req->ie_len;
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memcpy(msg_body.ie, req->ie, req->ie_len);
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msg_body->ie_len = req->ie_len;
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msg_body->header.len += req->ie_len;
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memcpy(msg_body->ie, req->ie, req->ie_len);
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}
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PREPARE_HAL_BUF(wcn->hal_buf, msg_body);
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PREPARE_HAL_BUF(wcn->hal_buf, (*msg_body));
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wcn36xx_dbg(WCN36XX_DBG_HAL,
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"hal start hw-scan (channels: %u; ssids: %u; p2p: %s)\n",
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msg_body.num_channel, msg_body.num_ssid,
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msg_body.p2p_search ? "yes" : "no");
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msg_body->num_channel, msg_body->num_ssid,
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msg_body->p2p_search ? "yes" : "no");
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ret = wcn36xx_smd_send_and_wait(wcn, msg_body.header.len);
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ret = wcn36xx_smd_send_and_wait(wcn, msg_body->header.len);
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if (ret) {
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wcn36xx_err("Sending hal_start_scan_offload failed\n");
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goto out;
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@ -698,6 +704,7 @@ int wcn36xx_smd_start_hw_scan(struct wcn36xx *wcn, struct ieee80211_vif *vif,
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goto out;
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}
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out:
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kfree(msg_body);
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mutex_unlock(&wcn->hal_mutex);
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return ret;
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}
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@ -1257,96 +1264,104 @@ out:
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static int wcn36xx_smd_config_bss_v1(struct wcn36xx *wcn,
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const struct wcn36xx_hal_config_bss_req_msg *orig)
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{
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struct wcn36xx_hal_config_bss_req_msg_v1 msg_body;
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struct wcn36xx_hal_config_bss_params_v1 *bss = &msg_body.bss_params;
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struct wcn36xx_hal_config_sta_params_v1 *sta = &bss->sta;
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struct wcn36xx_hal_config_bss_req_msg_v1 *msg_body;
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struct wcn36xx_hal_config_bss_params_v1 *bss;
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struct wcn36xx_hal_config_sta_params_v1 *sta;
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int ret;
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INIT_HAL_MSG(msg_body, WCN36XX_HAL_CONFIG_BSS_REQ);
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msg_body = kzalloc(sizeof(*msg_body), GFP_KERNEL);
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if (!msg_body)
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return -ENOMEM;
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INIT_HAL_MSG((*msg_body), WCN36XX_HAL_CONFIG_BSS_REQ);
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bss = &msg_body->bss_params;
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sta = &bss->sta;
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/* convert orig to v1 */
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memcpy(&msg_body.bss_params.bssid,
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memcpy(&msg_body->bss_params.bssid,
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&orig->bss_params.bssid, ETH_ALEN);
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memcpy(&msg_body.bss_params.self_mac_addr,
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memcpy(&msg_body->bss_params.self_mac_addr,
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&orig->bss_params.self_mac_addr, ETH_ALEN);
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msg_body.bss_params.bss_type = orig->bss_params.bss_type;
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msg_body.bss_params.oper_mode = orig->bss_params.oper_mode;
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msg_body.bss_params.nw_type = orig->bss_params.nw_type;
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msg_body->bss_params.bss_type = orig->bss_params.bss_type;
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msg_body->bss_params.oper_mode = orig->bss_params.oper_mode;
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msg_body->bss_params.nw_type = orig->bss_params.nw_type;
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msg_body.bss_params.short_slot_time_supported =
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msg_body->bss_params.short_slot_time_supported =
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orig->bss_params.short_slot_time_supported;
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msg_body.bss_params.lla_coexist = orig->bss_params.lla_coexist;
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msg_body.bss_params.llb_coexist = orig->bss_params.llb_coexist;
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msg_body.bss_params.llg_coexist = orig->bss_params.llg_coexist;
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msg_body.bss_params.ht20_coexist = orig->bss_params.ht20_coexist;
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msg_body.bss_params.lln_non_gf_coexist =
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msg_body->bss_params.lla_coexist = orig->bss_params.lla_coexist;
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msg_body->bss_params.llb_coexist = orig->bss_params.llb_coexist;
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msg_body->bss_params.llg_coexist = orig->bss_params.llg_coexist;
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msg_body->bss_params.ht20_coexist = orig->bss_params.ht20_coexist;
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msg_body->bss_params.lln_non_gf_coexist =
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orig->bss_params.lln_non_gf_coexist;
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msg_body.bss_params.lsig_tx_op_protection_full_support =
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msg_body->bss_params.lsig_tx_op_protection_full_support =
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orig->bss_params.lsig_tx_op_protection_full_support;
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msg_body.bss_params.rifs_mode = orig->bss_params.rifs_mode;
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msg_body.bss_params.beacon_interval = orig->bss_params.beacon_interval;
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msg_body.bss_params.dtim_period = orig->bss_params.dtim_period;
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msg_body.bss_params.tx_channel_width_set =
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msg_body->bss_params.rifs_mode = orig->bss_params.rifs_mode;
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msg_body->bss_params.beacon_interval = orig->bss_params.beacon_interval;
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msg_body->bss_params.dtim_period = orig->bss_params.dtim_period;
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msg_body->bss_params.tx_channel_width_set =
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orig->bss_params.tx_channel_width_set;
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msg_body.bss_params.oper_channel = orig->bss_params.oper_channel;
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msg_body.bss_params.ext_channel = orig->bss_params.ext_channel;
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msg_body->bss_params.oper_channel = orig->bss_params.oper_channel;
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msg_body->bss_params.ext_channel = orig->bss_params.ext_channel;
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msg_body.bss_params.reserved = orig->bss_params.reserved;
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msg_body->bss_params.reserved = orig->bss_params.reserved;
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memcpy(&msg_body.bss_params.ssid,
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memcpy(&msg_body->bss_params.ssid,
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&orig->bss_params.ssid,
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sizeof(orig->bss_params.ssid));
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msg_body.bss_params.action = orig->bss_params.action;
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msg_body.bss_params.rateset = orig->bss_params.rateset;
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msg_body.bss_params.ht = orig->bss_params.ht;
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msg_body.bss_params.obss_prot_enabled =
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msg_body->bss_params.action = orig->bss_params.action;
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msg_body->bss_params.rateset = orig->bss_params.rateset;
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msg_body->bss_params.ht = orig->bss_params.ht;
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msg_body->bss_params.obss_prot_enabled =
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orig->bss_params.obss_prot_enabled;
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msg_body.bss_params.rmf = orig->bss_params.rmf;
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msg_body.bss_params.ht_oper_mode = orig->bss_params.ht_oper_mode;
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msg_body.bss_params.dual_cts_protection =
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msg_body->bss_params.rmf = orig->bss_params.rmf;
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msg_body->bss_params.ht_oper_mode = orig->bss_params.ht_oper_mode;
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msg_body->bss_params.dual_cts_protection =
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orig->bss_params.dual_cts_protection;
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msg_body.bss_params.max_probe_resp_retry_limit =
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msg_body->bss_params.max_probe_resp_retry_limit =
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orig->bss_params.max_probe_resp_retry_limit;
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msg_body.bss_params.hidden_ssid = orig->bss_params.hidden_ssid;
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msg_body.bss_params.proxy_probe_resp =
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msg_body->bss_params.hidden_ssid = orig->bss_params.hidden_ssid;
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msg_body->bss_params.proxy_probe_resp =
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orig->bss_params.proxy_probe_resp;
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msg_body.bss_params.edca_params_valid =
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msg_body->bss_params.edca_params_valid =
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orig->bss_params.edca_params_valid;
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memcpy(&msg_body.bss_params.acbe,
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memcpy(&msg_body->bss_params.acbe,
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&orig->bss_params.acbe,
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sizeof(orig->bss_params.acbe));
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memcpy(&msg_body.bss_params.acbk,
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memcpy(&msg_body->bss_params.acbk,
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&orig->bss_params.acbk,
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sizeof(orig->bss_params.acbk));
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memcpy(&msg_body.bss_params.acvi,
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memcpy(&msg_body->bss_params.acvi,
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&orig->bss_params.acvi,
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sizeof(orig->bss_params.acvi));
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memcpy(&msg_body.bss_params.acvo,
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memcpy(&msg_body->bss_params.acvo,
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&orig->bss_params.acvo,
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sizeof(orig->bss_params.acvo));
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msg_body.bss_params.ext_set_sta_key_param_valid =
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msg_body->bss_params.ext_set_sta_key_param_valid =
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orig->bss_params.ext_set_sta_key_param_valid;
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memcpy(&msg_body.bss_params.ext_set_sta_key_param,
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memcpy(&msg_body->bss_params.ext_set_sta_key_param,
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&orig->bss_params.ext_set_sta_key_param,
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sizeof(orig->bss_params.acvo));
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msg_body.bss_params.wcn36xx_hal_persona =
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msg_body->bss_params.wcn36xx_hal_persona =
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orig->bss_params.wcn36xx_hal_persona;
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msg_body.bss_params.spectrum_mgt_enable =
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msg_body->bss_params.spectrum_mgt_enable =
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orig->bss_params.spectrum_mgt_enable;
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msg_body.bss_params.tx_mgmt_power = orig->bss_params.tx_mgmt_power;
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msg_body.bss_params.max_tx_power = orig->bss_params.max_tx_power;
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msg_body->bss_params.tx_mgmt_power = orig->bss_params.tx_mgmt_power;
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msg_body->bss_params.max_tx_power = orig->bss_params.max_tx_power;
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wcn36xx_smd_convert_sta_to_v1(wcn, &orig->bss_params.sta,
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&msg_body.bss_params.sta);
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&msg_body->bss_params.sta);
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PREPARE_HAL_BUF(wcn->hal_buf, msg_body);
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PREPARE_HAL_BUF(wcn->hal_buf, (*msg_body));
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wcn36xx_dbg(WCN36XX_DBG_HAL,
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"hal config bss v1 bssid %pM self_mac_addr %pM bss_type %d oper_mode %d nw_type %d\n",
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@ -1358,7 +1373,10 @@ static int wcn36xx_smd_config_bss_v1(struct wcn36xx *wcn,
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sta->bssid, sta->action, sta->sta_index,
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sta->bssid_index, sta->aid, sta->type, sta->mac);
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return wcn36xx_smd_send_and_wait(wcn, msg_body.header.len);
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ret = wcn36xx_smd_send_and_wait(wcn, msg_body->header.len);
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kfree(msg_body);
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return ret;
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}
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@ -1410,16 +1428,21 @@ int wcn36xx_smd_config_bss(struct wcn36xx *wcn, struct ieee80211_vif *vif,
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struct ieee80211_sta *sta, const u8 *bssid,
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bool update)
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{
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struct wcn36xx_hal_config_bss_req_msg msg;
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struct wcn36xx_hal_config_bss_req_msg *msg;
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struct wcn36xx_hal_config_bss_params *bss;
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struct wcn36xx_hal_config_sta_params *sta_params;
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struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
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int ret;
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mutex_lock(&wcn->hal_mutex);
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INIT_HAL_MSG(msg, WCN36XX_HAL_CONFIG_BSS_REQ);
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msg = kzalloc(sizeof(*msg), GFP_KERNEL);
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if (!msg) {
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ret = -ENOMEM;
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goto out;
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}
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INIT_HAL_MSG((*msg), WCN36XX_HAL_CONFIG_BSS_REQ);
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bss = &msg.bss_params;
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bss = &msg->bss_params;
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sta_params = &bss->sta;
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WARN_ON(is_zero_ether_addr(bssid));
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@ -1514,11 +1537,11 @@ int wcn36xx_smd_config_bss(struct wcn36xx *wcn, struct ieee80211_vif *vif,
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sta_params->mac);
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if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
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ret = wcn36xx_smd_config_bss_v1(wcn, &msg);
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ret = wcn36xx_smd_config_bss_v1(wcn, msg);
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} else {
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PREPARE_HAL_BUF(wcn->hal_buf, msg);
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PREPARE_HAL_BUF(wcn->hal_buf, (*msg));
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ret = wcn36xx_smd_send_and_wait(wcn, msg.header.len);
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ret = wcn36xx_smd_send_and_wait(wcn, msg->header.len);
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}
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if (ret) {
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wcn36xx_err("Sending hal_config_bss failed\n");
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@ -1534,6 +1557,7 @@ int wcn36xx_smd_config_bss(struct wcn36xx *wcn, struct ieee80211_vif *vif,
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goto out;
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}
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out:
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kfree(msg);
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mutex_unlock(&wcn->hal_mutex);
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return ret;
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}
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