diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath6kl/node.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath6kl/node.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/node.c b/drivers/net/wireless/ath/ath6kl/node.c deleted file mode 100644 index 131205c610b..00000000000 --- a/drivers/net/wireless/ath/ath6kl/node.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * Copyright (c) 2004-2011 Atheros Communications Inc. - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "htc.h" -#include "wmi.h" -#include "debug.h" - -struct bss *wlan_node_alloc(int wh_size) -{ - struct bss *ni; - - ni = kzalloc(sizeof(struct bss), GFP_ATOMIC); - - if ((ni != NULL) && wh_size) { - ni->ni_buf = kmalloc(wh_size, GFP_ATOMIC); - if (ni->ni_buf == NULL) { - kfree(ni); - return NULL; - } - } - - return ni; -} - -void wlan_node_free(struct bss *ni) -{ - kfree(ni->ni_buf); - kfree(ni); -} - -void wlan_setup_node(struct ath6kl_node_table *nt, struct bss *ni, - const u8 *mac_addr) -{ - int hash; - - memcpy(ni->ni_macaddr, mac_addr, ETH_ALEN); - hash = ATH6KL_NODE_HASH(mac_addr); - ni->ni_refcnt = 1; - - ni->ni_tstamp = jiffies_to_msecs(jiffies); - ni->ni_actcnt = WLAN_NODE_INACT_CNT; - - spin_lock_bh(&nt->nt_nodelock); - - /* insert at the end of the node list */ - ni->ni_list_next = NULL; - ni->ni_list_prev = nt->nt_node_last; - if (nt->nt_node_last != NULL) - nt->nt_node_last->ni_list_next = ni; - - nt->nt_node_last = ni; - if (nt->nt_node_first == NULL) - nt->nt_node_first = ni; - - /* insert into the hash list */ - ni->ni_hash_next = nt->nt_hash[hash]; - if (ni->ni_hash_next != NULL) - nt->nt_hash[hash]->ni_hash_prev = ni; - - ni->ni_hash_prev = NULL; - nt->nt_hash[hash] = ni; - - spin_unlock_bh(&nt->nt_nodelock); -} - -struct bss *wlan_find_node(struct ath6kl_node_table *nt, - const u8 *mac_addr) -{ - struct bss *ni, *found_ni = NULL; - int hash; - - spin_lock_bh(&nt->nt_nodelock); - - hash = ATH6KL_NODE_HASH(mac_addr); - for (ni = nt->nt_hash[hash]; ni; ni = ni->ni_hash_next) { - if (memcmp(ni->ni_macaddr, mac_addr, ETH_ALEN) == 0) { - ni->ni_refcnt++; - found_ni = ni; - break; - } - } - - spin_unlock_bh(&nt->nt_nodelock); - - return found_ni; -} - -void wlan_node_reclaim(struct ath6kl_node_table *nt, struct bss *ni) -{ - int hash; - - spin_lock_bh(&nt->nt_nodelock); - - if (ni->ni_list_prev == NULL) - /* fix list head */ - nt->nt_node_first = ni->ni_list_next; - else - ni->ni_list_prev->ni_list_next = ni->ni_list_next; - - if (ni->ni_list_next == NULL) - /* fix list tail */ - nt->nt_node_last = ni->ni_list_prev; - else - ni->ni_list_next->ni_list_prev = ni->ni_list_prev; - - if (ni->ni_hash_prev == NULL) { - /* first in list so fix the list head */ - hash = ATH6KL_NODE_HASH(ni->ni_macaddr); - nt->nt_hash[hash] = ni->ni_hash_next; - } else { - ni->ni_hash_prev->ni_hash_next = ni->ni_hash_next; - } - - if (ni->ni_hash_next != NULL) - ni->ni_hash_next->ni_hash_prev = ni->ni_hash_prev; - - wlan_node_free(ni); - - spin_unlock_bh(&nt->nt_nodelock); -} - -static void wlan_node_dec_free(struct bss *ni) -{ - if ((ni->ni_refcnt--) == 1) - wlan_node_free(ni); -} - -void wlan_free_allnodes(struct ath6kl_node_table *nt) -{ - struct bss *ni; - - while ((ni = nt->nt_node_first) != NULL) - wlan_node_reclaim(nt, ni); -} - -void wlan_iterate_nodes(struct ath6kl_node_table *nt, void *arg) -{ - struct bss *ni; - - spin_lock_bh(&nt->nt_nodelock); - for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) { - ni->ni_refcnt++; - ath6kl_cfg80211_scan_node(arg, ni); - wlan_node_dec_free(ni); - } - spin_unlock_bh(&nt->nt_nodelock); -} - -void wlan_node_table_init(struct ath6kl_node_table *nt) -{ - ath6kl_dbg(ATH6KL_DBG_WLAN_NODE, "node table = 0x%lx\n", - (unsigned long)nt); - - memset(nt, 0, sizeof(struct ath6kl_node_table)); - - spin_lock_init(&nt->nt_nodelock); - - nt->nt_node_age = WLAN_NODE_INACT_TIMEOUT_MSEC; -} - -void wlan_refresh_inactive_nodes(struct ath6kl *ar) -{ - struct ath6kl_node_table *nt = &ar->scan_table; - struct bss *bss; - u32 now; - - now = jiffies_to_msecs(jiffies); - bss = nt->nt_node_first; - while (bss != NULL) { - /* refresh all nodes except the current bss */ - if (memcmp(ar->bssid, bss->ni_macaddr, ETH_ALEN) != 0) { - if (((now - bss->ni_tstamp) > nt->nt_node_age) - || --bss->ni_actcnt == 0) { - wlan_node_reclaim(nt, bss); - } - } - bss = bss->ni_list_next; - } -} - -void wlan_node_table_cleanup(struct ath6kl_node_table *nt) -{ - wlan_free_allnodes(nt); -} - -struct bss *wlan_find_ssid_node(struct ath6kl_node_table *nt, u8 * ssid, - u32 ssid_len, bool is_wpa2, bool match_ssid) -{ - struct bss *ni, *found_ni = NULL; - u8 *ie_ssid; - - spin_lock_bh(&nt->nt_nodelock); - - for (ni = nt->nt_node_first; ni; ni = ni->ni_list_next) { - - ie_ssid = ni->ni_cie.ie_ssid; - - if ((ie_ssid[1] <= IEEE80211_MAX_SSID_LEN) && - (memcmp(ssid, &ie_ssid[2], ssid_len) == 0)) { - - if (match_ssid || - (is_wpa2 && ni->ni_cie.ie_rsn != NULL) || - (!is_wpa2 && ni->ni_cie.ie_wpa != NULL)) { - ni->ni_refcnt++; - found_ni = ni; - break; - } - } - } - - spin_unlock_bh(&nt->nt_nodelock); - - return found_ni; -} - -void wlan_node_return(struct ath6kl_node_table *nt, struct bss *ni) -{ - spin_lock_bh(&nt->nt_nodelock); - wlan_node_dec_free(ni); - spin_unlock_bh(&nt->nt_nodelock); -} |