mac80211: constify IE parsing
Make all the parsed IE pointers const, and propagate the change to all the users etc. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
Родитель
50640f1693
Коммит
4a3cb702b0
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@ -2152,7 +2152,7 @@ static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
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* @tim_len: length of the TIM IE
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* @aid: the AID to look for
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*/
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static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
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static inline bool ieee80211_check_tim(const struct ieee80211_tim_ie *tim,
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u8 tim_len, u16 aid)
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{
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u8 mask;
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@ -94,7 +94,7 @@ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
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bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_supported_band *sband,
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struct ieee80211_ht_cap *ht_cap_ie,
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const struct ieee80211_ht_cap *ht_cap_ie,
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struct sta_info *sta)
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{
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struct ieee80211_sta_ht_cap ht_cap;
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@ -1163,41 +1163,41 @@ struct ieee80211_ra_tid {
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/* Parsed Information Elements */
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struct ieee802_11_elems {
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u8 *ie_start;
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const u8 *ie_start;
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size_t total_len;
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/* pointers to IEs */
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u8 *ssid;
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u8 *supp_rates;
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u8 *fh_params;
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u8 *ds_params;
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u8 *cf_params;
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struct ieee80211_tim_ie *tim;
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u8 *ibss_params;
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u8 *challenge;
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u8 *rsn;
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u8 *erp_info;
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u8 *ext_supp_rates;
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u8 *wmm_info;
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u8 *wmm_param;
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struct ieee80211_ht_cap *ht_cap_elem;
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struct ieee80211_ht_operation *ht_operation;
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struct ieee80211_vht_cap *vht_cap_elem;
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struct ieee80211_vht_operation *vht_operation;
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struct ieee80211_meshconf_ie *mesh_config;
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u8 *mesh_id;
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u8 *peering;
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__le16 *awake_window;
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u8 *preq;
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u8 *prep;
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u8 *perr;
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struct ieee80211_rann_ie *rann;
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struct ieee80211_channel_sw_ie *ch_switch_ie;
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u8 *country_elem;
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u8 *pwr_constr_elem;
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u8 *quiet_elem; /* first quite element */
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u8 *timeout_int;
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u8 *opmode_notif;
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const u8 *ssid;
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const u8 *supp_rates;
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const u8 *fh_params;
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const u8 *ds_params;
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const u8 *cf_params;
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const struct ieee80211_tim_ie *tim;
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const u8 *ibss_params;
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const u8 *challenge;
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const u8 *rsn;
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const u8 *erp_info;
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const u8 *ext_supp_rates;
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const u8 *wmm_info;
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const u8 *wmm_param;
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const struct ieee80211_ht_cap *ht_cap_elem;
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const struct ieee80211_ht_operation *ht_operation;
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const struct ieee80211_vht_cap *vht_cap_elem;
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const struct ieee80211_vht_operation *vht_operation;
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const struct ieee80211_meshconf_ie *mesh_config;
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const u8 *mesh_id;
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const u8 *peering;
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const __le16 *awake_window;
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const u8 *preq;
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const u8 *prep;
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const u8 *perr;
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const struct ieee80211_rann_ie *rann;
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const struct ieee80211_channel_sw_ie *ch_switch_ie;
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const u8 *country_elem;
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const u8 *pwr_constr_elem;
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const u8 *quiet_elem; /* first quite element */
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const u8 *timeout_int;
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const u8 *opmode_notif;
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/* length of them, respectively */
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u8 ssid_len;
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@ -1276,10 +1276,10 @@ void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
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int ieee80211_max_network_latency(struct notifier_block *nb,
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unsigned long data, void *dummy);
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int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
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void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_channel_sw_ie *sw_elem,
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struct ieee80211_bss *bss,
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u64 timestamp);
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void
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ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
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const struct ieee80211_channel_sw_ie *sw_elem,
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struct ieee80211_bss *bss, u64 timestamp);
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void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
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void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
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void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
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@ -1387,7 +1387,7 @@ void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_sta_ht_cap *ht_cap);
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bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_supported_band *sband,
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struct ieee80211_ht_cap *ht_cap_ie,
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const struct ieee80211_ht_cap *ht_cap_ie,
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struct sta_info *sta);
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void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
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const u8 *da, u16 tid,
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@ -1428,10 +1428,11 @@ void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
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u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
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/* VHT */
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void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_supported_band *sband,
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struct ieee80211_vht_cap *vht_cap_ie,
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struct sta_info *sta);
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void
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ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_supported_band *sband,
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const struct ieee80211_vht_cap *vht_cap_ie,
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struct sta_info *sta);
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enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
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void ieee80211_sta_set_rx_nss(struct sta_info *sta);
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void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
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@ -1555,7 +1556,7 @@ static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
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void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
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u16 transaction, u16 auth_alg, u16 status,
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u8 *extra, size_t extra_len, const u8 *bssid,
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const u8 *extra, size_t extra_len, const u8 *bssid,
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const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
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u32 tx_flags);
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void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
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@ -1606,7 +1607,7 @@ int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
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/* channel management */
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void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
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struct ieee80211_ht_operation *ht_oper,
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const struct ieee80211_ht_operation *ht_oper,
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struct cfg80211_chan_def *chandef);
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int __must_check
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@ -265,8 +265,8 @@ int mesh_nexthop_lookup(struct sk_buff *skb,
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int mesh_nexthop_resolve(struct sk_buff *skb,
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struct ieee80211_sub_if_data *sdata);
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void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata);
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struct mesh_path *mesh_path_lookup(u8 *dst,
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struct ieee80211_sub_if_data *sdata);
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struct mesh_path *mesh_path_lookup(const u8 *dst,
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struct ieee80211_sub_if_data *sdata);
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struct mesh_path *mpp_path_lookup(u8 *dst,
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struct ieee80211_sub_if_data *sdata);
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int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata);
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@ -276,7 +276,7 @@ void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
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void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
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void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_mgmt *mgmt, size_t len);
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int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata);
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int mesh_path_add(const u8 *dst, struct ieee80211_sub_if_data *sdata);
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int mesh_path_add_gate(struct mesh_path *mpath);
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int mesh_path_send_to_gates(struct mesh_path *mpath);
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@ -301,8 +301,9 @@ void mesh_sta_cleanup(struct sta_info *sta);
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void mesh_mpath_table_grow(void);
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void mesh_mpp_table_grow(void);
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/* Mesh paths */
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int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn, __le16 target_rcode,
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const u8 *ra, struct ieee80211_sub_if_data *sdata);
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int mesh_path_error_tx(u8 ttl, const u8 *target, __le32 target_sn,
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__le16 target_rcode, const u8 *ra,
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struct ieee80211_sub_if_data *sdata);
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void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta);
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void mesh_path_flush_pending(struct mesh_path *mpath);
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void mesh_path_tx_pending(struct mesh_path *mpath);
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@ -30,14 +30,14 @@
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static void mesh_queue_preq(struct mesh_path *, u8);
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static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
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static inline u32 u32_field_get(const u8 *preq_elem, int offset, bool ae)
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{
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if (ae)
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offset += 6;
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return get_unaligned_le32(preq_elem + offset);
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}
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static inline u32 u16_field_get(u8 *preq_elem, int offset, bool ae)
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static inline u32 u16_field_get(const u8 *preq_elem, int offset, bool ae)
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{
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if (ae)
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offset += 6;
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@ -102,10 +102,13 @@ enum mpath_frame_type {
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static const u8 broadcast_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
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u8 *orig_addr, __le32 orig_sn, u8 target_flags, u8 *target,
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__le32 target_sn, const u8 *da, u8 hop_count, u8 ttl,
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__le32 lifetime, __le32 metric, __le32 preq_id,
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struct ieee80211_sub_if_data *sdata)
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const u8 *orig_addr, __le32 orig_sn,
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u8 target_flags, const u8 *target,
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__le32 target_sn, const u8 *da,
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u8 hop_count, u8 ttl,
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__le32 lifetime, __le32 metric,
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__le32 preq_id,
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struct ieee80211_sub_if_data *sdata)
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{
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struct ieee80211_local *local = sdata->local;
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struct sk_buff *skb;
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@ -235,7 +238,7 @@ static void prepare_frame_for_deferred_tx(struct ieee80211_sub_if_data *sdata,
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* also acquires in the TX path. To avoid a deadlock we don't transmit the
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* frame directly but add it to the pending queue instead.
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*/
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int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
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int mesh_path_error_tx(u8 ttl, const u8 *target, __le32 target_sn,
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__le16 target_rcode, const u8 *ra,
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struct ieee80211_sub_if_data *sdata)
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{
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@ -369,14 +372,14 @@ static u32 airtime_link_metric_get(struct ieee80211_local *local,
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* path routing information is updated.
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*/
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static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_mgmt *mgmt,
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u8 *hwmp_ie, enum mpath_frame_type action)
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struct ieee80211_mgmt *mgmt,
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const u8 *hwmp_ie, enum mpath_frame_type action)
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{
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struct ieee80211_local *local = sdata->local;
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struct mesh_path *mpath;
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struct sta_info *sta;
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bool fresh_info;
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u8 *orig_addr, *ta;
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const u8 *orig_addr, *ta;
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u32 orig_sn, orig_metric;
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unsigned long orig_lifetime, exp_time;
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u32 last_hop_metric, new_metric;
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@ -511,11 +514,11 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
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static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_mgmt *mgmt,
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u8 *preq_elem, u32 metric)
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const u8 *preq_elem, u32 metric)
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{
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struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
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struct mesh_path *mpath = NULL;
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u8 *target_addr, *orig_addr;
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const u8 *target_addr, *orig_addr;
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const u8 *da;
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u8 target_flags, ttl, flags;
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u32 orig_sn, target_sn, lifetime, orig_metric;
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@ -648,11 +651,11 @@ next_hop_deref_protected(struct mesh_path *mpath)
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static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_mgmt *mgmt,
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u8 *prep_elem, u32 metric)
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const u8 *prep_elem, u32 metric)
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{
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struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
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struct mesh_path *mpath;
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u8 *target_addr, *orig_addr;
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const u8 *target_addr, *orig_addr;
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u8 ttl, hopcount, flags;
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u8 next_hop[ETH_ALEN];
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u32 target_sn, orig_sn, lifetime;
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@ -711,12 +714,13 @@ fail:
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}
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static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_mgmt *mgmt, u8 *perr_elem)
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struct ieee80211_mgmt *mgmt,
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const u8 *perr_elem)
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{
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struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
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struct mesh_path *mpath;
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u8 ttl;
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u8 *ta, *target_addr;
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const u8 *ta, *target_addr;
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u32 target_sn;
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u16 target_rcode;
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@ -758,15 +762,15 @@ endperr:
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}
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static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_mgmt *mgmt,
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struct ieee80211_rann_ie *rann)
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struct ieee80211_mgmt *mgmt,
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const struct ieee80211_rann_ie *rann)
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{
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struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
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struct ieee80211_local *local = sdata->local;
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struct sta_info *sta;
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struct mesh_path *mpath;
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u8 ttl, flags, hopcount;
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u8 *orig_addr;
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const u8 *orig_addr;
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u32 orig_sn, metric, metric_txsta, interval;
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bool root_is_gate;
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@ -181,7 +181,7 @@ errcopy:
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return -ENOMEM;
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}
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static u32 mesh_table_hash(u8 *addr, struct ieee80211_sub_if_data *sdata,
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static u32 mesh_table_hash(const u8 *addr, struct ieee80211_sub_if_data *sdata,
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struct mesh_table *tbl)
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{
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/* Use last four bytes of hw addr and interface index as hash index */
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@ -326,8 +326,8 @@ static void mesh_path_move_to_queue(struct mesh_path *gate_mpath,
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}
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static struct mesh_path *mpath_lookup(struct mesh_table *tbl, u8 *dst,
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struct ieee80211_sub_if_data *sdata)
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static struct mesh_path *mpath_lookup(struct mesh_table *tbl, const u8 *dst,
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struct ieee80211_sub_if_data *sdata)
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{
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struct mesh_path *mpath;
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struct hlist_node *n;
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@ -359,7 +359,8 @@ static struct mesh_path *mpath_lookup(struct mesh_table *tbl, u8 *dst,
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*
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* Locking: must be called within a read rcu section.
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*/
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struct mesh_path *mesh_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata)
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struct mesh_path *mesh_path_lookup(const u8 *dst,
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struct ieee80211_sub_if_data *sdata)
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{
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return mpath_lookup(rcu_dereference(mesh_paths), dst, sdata);
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}
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@ -494,7 +495,7 @@ int mesh_gate_num(struct ieee80211_sub_if_data *sdata)
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*
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* State: the initial state of the new path is set to 0
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*/
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int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata)
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int mesh_path_add(const u8 *dst, struct ieee80211_sub_if_data *sdata)
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{
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struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
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struct ieee80211_local *local = sdata->local;
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@ -1041,10 +1041,10 @@ static void ieee80211_chswitch_timer(unsigned long data)
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ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
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}
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void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_channel_sw_ie *sw_elem,
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struct ieee80211_bss *bss,
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u64 timestamp)
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void
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ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
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const struct ieee80211_channel_sw_ie *sw_elem,
|
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struct ieee80211_bss *bss, u64 timestamp)
|
||||
{
|
||||
struct cfg80211_bss *cbss =
|
||||
container_of((void *)bss, struct cfg80211_bss, priv);
|
||||
|
|
@ -1479,13 +1479,14 @@ void ieee80211_dfs_cac_timer_work(struct work_struct *work)
|
|||
/* MLME */
|
||||
static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
|
||||
struct ieee80211_sub_if_data *sdata,
|
||||
u8 *wmm_param, size_t wmm_param_len)
|
||||
const u8 *wmm_param, size_t wmm_param_len)
|
||||
{
|
||||
struct ieee80211_tx_queue_params params;
|
||||
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
|
||||
size_t left;
|
||||
int count;
|
||||
u8 *pos, uapsd_queues = 0;
|
||||
const u8 *pos;
|
||||
u8 uapsd_queues = 0;
|
||||
|
||||
if (!local->ops->conf_tx)
|
||||
return false;
|
||||
|
|
@ -2670,7 +2671,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
|
|||
need_ps = sdata->u.mgd.associated && !sdata->u.mgd.dtim_period;
|
||||
|
||||
if (elems->tim && !elems->parse_error) {
|
||||
struct ieee80211_tim_ie *tim_ie = elems->tim;
|
||||
const struct ieee80211_tim_ie *tim_ie = elems->tim;
|
||||
sdata->u.mgd.dtim_period = tim_ie->dtim_period;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1035,7 +1035,7 @@ u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
|
|||
|
||||
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
|
||||
u16 transaction, u16 auth_alg, u16 status,
|
||||
u8 *extra, size_t extra_len, const u8 *da,
|
||||
const u8 *extra, size_t extra_len, const u8 *da,
|
||||
const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx,
|
||||
u32 tx_flags)
|
||||
{
|
||||
|
|
@ -1947,7 +1947,7 @@ u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
|
|||
}
|
||||
|
||||
void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
|
||||
struct ieee80211_ht_operation *ht_oper,
|
||||
const struct ieee80211_ht_operation *ht_oper,
|
||||
struct cfg80211_chan_def *chandef)
|
||||
{
|
||||
enum nl80211_channel_type channel_type;
|
||||
|
|
|
|||
|
|
@ -13,10 +13,11 @@
|
|||
#include "rate.h"
|
||||
|
||||
|
||||
void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
|
||||
struct ieee80211_supported_band *sband,
|
||||
struct ieee80211_vht_cap *vht_cap_ie,
|
||||
struct sta_info *sta)
|
||||
void
|
||||
ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
|
||||
struct ieee80211_supported_band *sband,
|
||||
const struct ieee80211_vht_cap *vht_cap_ie,
|
||||
struct sta_info *sta)
|
||||
{
|
||||
struct ieee80211_sta_vht_cap *vht_cap = &sta->sta.vht_cap;
|
||||
|
||||
|
|
|
|||
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