32f4e7b124
wpa_supplicant showed signal levels incorrectly with some drivers: Jun 6 16:29:36 rupert wpa_supplicant[18945]: Current BSS: 00:0d:97:11:40:d6 level=190 Jun 6 16:29:36 rupert wpa_supplicant[18945]: Selected BSS: 00:0d:97:11:50:09 level=192 Judging from output from other tools (iwlist) and the min_diff block at the end of wpa_supplicant_need_to_roam, it seems these values should actually be negative. Specifically, if one treats that number as a signed char instead of unsigned, everything matches up. To be honest, I've little to no understanding of wireless, but looking at the source code for wireless-tools (iw_print_stats in iwlib.c), it seems that the fields of the iw_quality struct need to be decoded differently depending on various flags. I guess src/drivers/driver_wext.c should have similar logic in wext_get_scan_qual. I wrote a patch that attempts to replicate some of that logic, although it may be more complicated than is necessary; I think some of the complexity is for backwards-compatibility, which might not be necessary depending on wpa_supplicant's dependencies? In any case, it is attached. Again, I don't know how any of this works, so it's likely the patch is a bit off. But I think at least the logic to determine min_diff in wpa_supplicant_need_to_roam would be more accurate if level were determined correctly.
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/*
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* WPA Supplicant - driver_wext exported functions
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* Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#ifndef DRIVER_WEXT_H
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#define DRIVER_WEXT_H
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#include <net/if.h>
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struct wpa_driver_wext_data {
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void *ctx;
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struct netlink_data *netlink;
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int ioctl_sock;
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int mlme_sock;
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char ifname[IFNAMSIZ + 1];
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int ifindex;
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int ifindex2;
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int if_removed;
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int if_disabled;
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struct rfkill_data *rfkill;
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u8 *assoc_req_ies;
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size_t assoc_req_ies_len;
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u8 *assoc_resp_ies;
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size_t assoc_resp_ies_len;
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struct wpa_driver_capa capa;
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int has_capability;
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int we_version_compiled;
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/* for set_auth_alg fallback */
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int use_crypt;
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int auth_alg_fallback;
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int operstate;
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char mlmedev[IFNAMSIZ + 1];
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int scan_complete_events;
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int cfg80211; /* whether driver is using cfg80211 */
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u8 max_level;
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};
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int wpa_driver_wext_get_bssid(void *priv, u8 *bssid);
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int wpa_driver_wext_set_bssid(void *priv, const u8 *bssid);
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int wpa_driver_wext_get_ssid(void *priv, u8 *ssid);
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int wpa_driver_wext_set_ssid(void *priv, const u8 *ssid, size_t ssid_len);
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int wpa_driver_wext_set_freq(void *priv, int freq);
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int wpa_driver_wext_set_mode(void *priv, int mode);
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int wpa_driver_wext_set_key(const char *ifname, void *priv, enum wpa_alg alg,
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const u8 *addr, int key_idx,
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int set_tx, const u8 *seq, size_t seq_len,
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const u8 *key, size_t key_len);
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int wpa_driver_wext_scan(void *priv, struct wpa_driver_scan_params *params);
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struct wpa_scan_results * wpa_driver_wext_get_scan_results(void *priv);
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void wpa_driver_wext_scan_timeout(void *eloop_ctx, void *timeout_ctx);
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int wpa_driver_wext_alternative_ifindex(struct wpa_driver_wext_data *drv,
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const char *ifname);
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void * wpa_driver_wext_init(void *ctx, const char *ifname);
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void wpa_driver_wext_deinit(void *priv);
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int wpa_driver_wext_set_operstate(void *priv, int state);
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int wpa_driver_wext_get_version(struct wpa_driver_wext_data *drv);
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int wpa_driver_wext_associate(void *priv,
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struct wpa_driver_associate_params *params);
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int wpa_driver_wext_get_capa(void *priv, struct wpa_driver_capa *capa);
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int wpa_driver_wext_set_auth_param(struct wpa_driver_wext_data *drv,
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int idx, u32 value);
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int wpa_driver_wext_cipher2wext(int cipher);
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int wpa_driver_wext_keymgmt2wext(int keymgmt);
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#endif /* DRIVER_WEXT_H */
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