/*
* Remove the key (no locking, for internal use).
*/
static int
_ieee80211_crypto_delkey(struct ieee80211vap *vap, struct ieee80211_key *key)
{
KASSERT(key->wk_cipher != NULL, ("No cipher!"));
IEEE80211_DPRINTF(vap, IEEE80211_MSG_CRYPTO,
"%s: %s keyix %u flags 0x%x rsc %ju tsc %ju len %u\n",
__func__, key->wk_cipher->ic_name,
key->wk_keyix, key->wk_flags,
key->wk_keyrsc[IEEE80211_NONQOS_TID], key->wk_keytsc,
key->wk_keylen);
if (key->wk_flags & IEEE80211_KEY_DEVKEY) {
/*
* Remove hardware entry.
*/
/* XXX key cache */
if (!dev_key_delete(vap, key)) {
IEEE80211_DPRINTF(vap, IEEE80211_MSG_CRYPTO,
"%s: driver did not delete key index %u\n",
__func__, key->wk_keyix);
vap->iv_stats.is_crypto_delkey++;
/* XXX recovery? */
}
}
cipher_detach(key);
memset(key, 0, sizeof(*key));
ieee80211_crypto_resetkey(vap, key, IEEE80211_KEYIX_NONE);
return 1;
}
/*
* Setup crypto support for a vap.
*/
void
ieee80211_crypto_vattach(struct ieee80211vap *vap)
{
int i;
/* NB: we assume everything is pre-zero'd */
vap->iv_max_keyix = IEEE80211_WEP_NKID;
vap->iv_def_txkey = IEEE80211_KEYIX_NONE;
for (i = 0; i < IEEE80211_WEP_NKID; i++)
ieee80211_crypto_resetkey(vap, &vap->iv_nw_keys[i],
IEEE80211_KEYIX_NONE);
/*
* Initialize the driver key support routines to noop entries.
* This is useful especially for the cipher test modules.
*/
vap->iv_key_alloc = null_key_alloc;
vap->iv_key_set = null_key_set;
vap->iv_key_delete = null_key_delete;
vap->iv_key_update_begin = null_key_update;
vap->iv_key_update_end = null_key_update;
}
/*
* Setup crypto support.
*/
void
ieee80211_crypto_attach(struct ieee80211com *ic)
{
struct ieee80211_crypto_state *cs = &ic->ic_crypto;
int i;
/* NB: we assume everything is pre-zero'd */
cs->cs_def_txkey = IEEE80211_KEYIX_NONE;
ciphers[IEEE80211_CIPHER_NONE] = &ieee80211_cipher_none;
for (i = 0; i < IEEE80211_WEP_NKID; i++)
ieee80211_crypto_resetkey(ic, &cs->cs_nw_keys[i], i);
/*
* Initialize the driver key support routines to noop entries.
* This is useful especially for the cipher test modules.
*/
cs->cs_key_alloc = null_key_alloc;
cs->cs_key_set = null_key_set;
cs->cs_key_delete = null_key_delete;
cs->cs_key_update_begin = null_key_update;
cs->cs_key_update_end = null_key_update;
}
/*
* Craft a temporary node suitable for sending a management frame
* to the specified station. We craft only as much state as we
* need to do the work since the node will be immediately reclaimed
* once the send completes, and the temporary node will NOT be put
* into node table.
*/
struct ieee80211_node *
ieee80211_tmp_node(struct ieee80211vap *vap, const u_int8_t *macaddr)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni;
int i;
/*
* if vap is being deleted, do not allow new allocations.
*/
if (ieee80211_vap_deleted_is_set(vap)) {
return NULL;
}
ni = ic->ic_node_alloc(&ic->ic_sta, vap, TRUE /* temp node */);
if (ni == NULL) {
vap->iv_stats.is_rx_nodealloc++;
return NULL;
}
#ifdef IEEE80211_DEBUG_NODELEAK
do {
rwlock_state_t lock_state;
OS_RWLOCK_WRITE_LOCK(&ic->ic_nodelock,&lock_state);
TAILQ_INSERT_TAIL(&ic->ic_nodes, ni, ni_alloc_list);
OS_RWLOCK_WRITE_UNLOCK(&ic->ic_nodelock,&lock_state);
} while(0);
#endif
ni->ni_flags |= IEEE80211_NODE_TEMP; /* useful for debugging */
ieee80211_ref_node(ni); /* mark referenced */
IEEE80211_VAP_LOCK(vap);
vap->iv_node_count++;
IEEE80211_VAP_UNLOCK(vap);
ni->ni_bss_node = ieee80211_ref_bss_node(vap);
ni->ni_vap = vap;
ni->ni_ic = ic;
ni->ni_table = NULL;
/* copy some default variables from parent */
IEEE80211_ADDR_COPY(ni->ni_macaddr, macaddr);
ni->ni_intval = ic->ic_intval; /* default beacon interval */
/* set default rate and channel */
ieee80211_node_set_chan(ni);
ni->ni_txpower = ic->ic_txpowlimit; /* max power */
/* init our unicast / receive key state */
ieee80211_crypto_resetkey(vap, &ni->ni_ucastkey, IEEE80211_KEYIX_NONE);
ieee80211_crypto_resetkey(vap, &ni->ni_persta.nips_hwkey, IEEE80211_KEYIX_NONE);
for (i = 0; i < IEEE80211_WEP_NKID; i++) {
ieee80211_crypto_resetkey(vap, &ni->ni_persta.nips_swkey[i], IEEE80211_KEYIX_NONE);
}
ni->ni_ath_defkeyindex = IEEE80211_INVAL_DEFKEY;
/* IBSS-only: mark as unassociated by default. */
ni->ni_assoc_state = IEEE80211_NODE_ADHOC_STATE_UNAUTH_UNASSOC;
/* 11n */
ni->ni_chwidth = ic->ic_cwm_get_width(ic);
IEEE80211_ADDR_COPY(ni->ni_bssid, vap->iv_bss->ni_bssid);
return ni;
}
