Page MenuHomeFreeBSD
Differential D32238 Diff 97280 sys/net80211/ieee80211_sta.c

Changeset View

Standalone View

View Options

sys/net80211/ieee80211_sta.c

Show First 20 Lines • Show All 546 Lines • ▼ Show 20 Linessta_input(struct ieee80211_node *ni, struct mbuf *m,
struct ieee80211_key *key; struct ieee80211_key *key;
struct ether_header *eh; struct ether_header *eh;
int hdrspace, need_tap = 1; /* mbuf need to be tapped. */ int hdrspace, need_tap = 1; /* mbuf need to be tapped. */
uint8_t dir, type, subtype, qos; uint8_t dir, type, subtype, qos;
uint8_t *bssid; uint8_t *bssid;
int is_hw_decrypted = 0; int is_hw_decrypted = 0;
int has_decrypted = 0; int has_decrypted = 0;
KASSERT(ni != NULL, ("%s: null node, mbuf %p", __func__, m));
/* Early init in case of early error case. */
type = -1;
/* /*
* Bit of a cheat here, we use a pointer for a 3-address
* frame format but don't reference fields past outside
* ieee80211_frame_min (or other shorter frames) w/o first
* validating the data is present.
*/
wh = mtod(m, struct ieee80211_frame *);
if (m->m_pkthdr.len < 2 || m->m_pkthdr.len < ieee80211_anyhdrsize(wh)) {
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
ni->ni_macaddr, NULL,
"too short (1): len %u", m->m_pkthdr.len);
vap->iv_stats.is_rx_tooshort++;
goto err;
}
if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) !=
IEEE80211_FC0_VERSION_0) {
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x",
wh->i_fc[0], wh->i_fc[1]);
vap->iv_stats.is_rx_badversion++;
goto err;
}
/*
* Some devices do hardware decryption all the way through * Some devices do hardware decryption all the way through
* to pretending the frame wasn't encrypted in the first place. * to pretending the frame wasn't encrypted in the first place.
* So, tag it appropriately so it isn't discarded inappropriately. * So, tag it appropriately so it isn't discarded inappropriately.
*/ */
if ((rxs != NULL) && (rxs->c_pktflags & IEEE80211_RX_F_DECRYPTED)) if ((rxs != NULL) && (rxs->c_pktflags & IEEE80211_RX_F_DECRYPTED))
is_hw_decrypted = 1; is_hw_decrypted = 1;
if (m->m_flags & M_AMPDU_MPDU) { if (m->m_flags & M_AMPDU_MPDU) {
/* /*
* Fastpath for A-MPDU reorder q resubmission. Frames * Fastpath for A-MPDU reorder q resubmission. Frames
* w/ M_AMPDU_MPDU marked have already passed through * w/ M_AMPDU_MPDU marked have already passed through
* here but were received out of order and been held on * here but were received out of order and been held on
* the reorder queue. When resubmitted they are marked * the reorder queue. When resubmitted they are marked
* with the M_AMPDU_MPDU flag and we can bypass most of * with the M_AMPDU_MPDU flag and we can bypass most of
* the normal processing. * the normal processing.
*/ */
wh = mtod(m, struct ieee80211_frame *);
type = IEEE80211_FC0_TYPE_DATA; type = IEEE80211_FC0_TYPE_DATA;
dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
subtype = IEEE80211_FC0_SUBTYPE_QOS; subtype = IEEE80211_FC0_SUBTYPE_QOS;
hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */ hdrspace = ieee80211_hdrspace(ic, wh); /* XXX optimize? */
goto resubmit_ampdu; goto resubmit_ampdu;
} }
KASSERT(ni != NULL, ("null node"));
ni->ni_inact = ni->ni_inact_reload; ni->ni_inact = ni->ni_inact_reload;
type = -1; /* undefined */
if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) {
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
ni->ni_macaddr, NULL,
"too short (1): len %u", m->m_pkthdr.len);
vap->iv_stats.is_rx_tooshort++;
goto out;
}
/*
* Bit of a cheat here, we use a pointer for a 3-address
* frame format but don't reference fields past outside
* ieee80211_frame_min w/o first validating the data is
* present.
*/
wh = mtod(m, struct ieee80211_frame *);
if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) !=
IEEE80211_FC0_VERSION_0) {
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x",
wh->i_fc[0], wh->i_fc[1]);
vap->iv_stats.is_rx_badversion++;
goto err;
}
dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK; dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { /*
* Control frames are not folowing the header scheme of data and mgmt
* frames so we do not apply extra checks here.
* We probably should do checks on RA (+TA) where available for those
* too, but for now do not drop them.
*/
if (type != IEEE80211_FC0_TYPE_CTL &&
(ic->ic_flags & IEEE80211_F_SCAN) == 0) {
bssid = wh->i_addr2; bssid = wh->i_addr2;
if (!IEEE80211_ADDR_EQ(bssid, ni->ni_bssid)) { if (!IEEE80211_ADDR_EQ(bssid, ni->ni_bssid)) {
/* not interested in */ /* not interested in */
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT, IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
bssid, NULL, "%s", "not to bss"); bssid, NULL, "%s", "not to bss");
vap->iv_stats.is_rx_wrongbss++; vap->iv_stats.is_rx_wrongbss++;
goto out; goto out;
} }
▲ Show 20 Lines • Show All 1,437 Lines • Show Last 20 Lines