diff options
Diffstat (limited to 'sys/net80211/ieee80211_crypto_none.c')
| -rw-r--r-- | sys/net80211/ieee80211_crypto_none.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/sys/net80211/ieee80211_crypto_none.c b/sys/net80211/ieee80211_crypto_none.c new file mode 100644 index 0000000..6d53ea9 --- /dev/null +++ b/sys/net80211/ieee80211_crypto_none.c @@ -0,0 +1,149 @@ +/*- + * Copyright (c) 2002-2004 Sam Leffler, Errno Consulting + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * IEEE 802.11 NULL crypto support. + */ +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/mbuf.h> +#include <sys/module.h> + +#include <sys/socket.h> + +#include <net/if.h> +#include <net/if_media.h> +#include <net/ethernet.h> + +#include <net80211/ieee80211_var.h> + +static void *none_attach(struct ieee80211com *, struct ieee80211_key *); +static void none_detach(struct ieee80211_key *); +static int none_setkey(struct ieee80211_key *); +static int none_encap(struct ieee80211_key *, struct mbuf *, u_int8_t); +static int none_decap(struct ieee80211_key *, struct mbuf *); +static int none_enmic(struct ieee80211_key *, struct mbuf *); +static int none_demic(struct ieee80211_key *, struct mbuf *); + +const struct ieee80211_cipher ieee80211_cipher_none = { + .ic_name = "NONE", + .ic_cipher = IEEE80211_CIPHER_NONE, + .ic_header = 0, + .ic_trailer = 0, + .ic_miclen = 0, + .ic_attach = none_attach, + .ic_detach = none_detach, + .ic_setkey = none_setkey, + .ic_encap = none_encap, + .ic_decap = none_decap, + .ic_enmic = none_enmic, + .ic_demic = none_demic, +}; + +static void * +none_attach(struct ieee80211com *ic, struct ieee80211_key *k) +{ + return ic; /* for diagnostics+stats */ +} + +static void +none_detach(struct ieee80211_key *k) +{ + (void) k; +} + +static int +none_setkey(struct ieee80211_key *k) +{ + (void) k; + return 1; +} + +static int +none_encap(struct ieee80211_key *k, struct mbuf *m, u_int8_t keyid) +{ + struct ieee80211com *ic = k->wk_private; +#ifdef IEEE80211_DEBUG + struct ieee80211_frame *wh = mtod(m, struct ieee80211_frame *); +#endif + + /* + * The specified key is not setup; this can + * happen, at least, when changing keys. + */ + IEEE80211_DPRINTF(ic, IEEE80211_MSG_CRYPTO, + "[%s] key (id %u) is invalid\n", + ether_sprintf(wh->i_addr1), keyid>>6); + ic->ic_stats.is_tx_badcipher++; + return 0; +} + +static int +none_decap(struct ieee80211_key *k, struct mbuf *m) +{ + struct ieee80211com *ic = k->wk_private; +#ifdef IEEE80211_DEBUG + struct ieee80211_frame *wh = mtod(m, struct ieee80211_frame *); + const u_int8_t *ivp = (const u_int8_t *)&wh[1]; +#endif + + /* + * The specified key is not setup; this can + * happen, at least, when changing keys. + */ + /* XXX useful to know dst too */ + IEEE80211_DPRINTF(ic, IEEE80211_MSG_CRYPTO, + "[%s] key (id %u) is invalid\n", + ether_sprintf(wh->i_addr2), ivp[IEEE80211_WEP_IVLEN] >> 6); + ic->ic_stats.is_rx_badkeyid++; + return 0; +} + +static int +none_enmic(struct ieee80211_key *k, struct mbuf *m) +{ + struct ieee80211com *ic = k->wk_private; + + ic->ic_stats.is_tx_badcipher++; + return 0; +} + +static int +none_demic(struct ieee80211_key *k, struct mbuf *m) +{ + struct ieee80211com *ic = k->wk_private; + + ic->ic_stats.is_rx_badkeyid++; + return 0; +} |
