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Merge tag 'mac80211-next-for-davem-2019-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

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Johannes Berg says:

====================
Various updates, notably:
 * extended key ID support (from 802.11-2016)
 * per-STA TX power control support
 * mac80211 TX performance improvements
 * HE (802.11ax) updates
 * mesh link probing support
 * enhancements of multi-BSSID support (also related to HE)
 * OWE userspace processing support
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2019-04-26 16:05:52 -04:00
parent 148f025d41 8828f81ad4
commit 30e5a9a5ba
36 changed files with 1480 additions and 375 deletions
Download Patch File Download Diff File Expand all files Collapse all files

74
net/mac80211/rx.c
View File

@@ -1005,23 +1005,43 @@ static int ieee80211_get_mmie_keyidx(struct sk_buff *skb)
return -1;
}
static int ieee80211_get_cs_keyid(const struct ieee80211_cipher_scheme *cs,
struct sk_buff *skb)
static int ieee80211_get_keyid(struct sk_buff *skb,
const struct ieee80211_cipher_scheme *cs)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
__le16 fc;
int hdrlen;
int minlen;
u8 key_idx_off;
u8 key_idx_shift;
u8 keyid;
fc = hdr->frame_control;
hdrlen = ieee80211_hdrlen(fc);
if (skb->len < hdrlen + cs->hdr_len)
if (cs) {
minlen = hdrlen + cs->hdr_len;
key_idx_off = hdrlen + cs->key_idx_off;
key_idx_shift = cs->key_idx_shift;
} else {
/* WEP, TKIP, CCMP and GCMP */
minlen = hdrlen + IEEE80211_WEP_IV_LEN;
key_idx_off = hdrlen + 3;
key_idx_shift = 6;
}
if (unlikely(skb->len < minlen))
return -EINVAL;
skb_copy_bits(skb, hdrlen + cs->key_idx_off, &keyid, 1);
keyid &= cs->key_idx_mask;
keyid >>= cs->key_idx_shift;
skb_copy_bits(skb, key_idx_off, &keyid, 1);
if (cs)
keyid &= cs->key_idx_mask;
keyid >>= key_idx_shift;
/* cs could use more than the usual two bits for the keyid */
if (unlikely(keyid >= NUM_DEFAULT_KEYS))
return -EINVAL;
return keyid;
}
@@ -1860,9 +1880,9 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
int keyidx;
int hdrlen;
ieee80211_rx_result result = RX_DROP_UNUSABLE;
struct ieee80211_key *sta_ptk = NULL;
struct ieee80211_key *ptk_idx = NULL;
int mmie_keyidx = -1;
__le16 fc;
const struct ieee80211_cipher_scheme *cs = NULL;
@@ -1900,21 +1920,24 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
if (rx->sta) {
int keyid = rx->sta->ptk_idx;
sta_ptk = rcu_dereference(rx->sta->ptk[keyid]);
if (ieee80211_has_protected(fc) && rx->sta->cipher_scheme) {
if (ieee80211_has_protected(fc)) {
cs = rx->sta->cipher_scheme;
keyid = ieee80211_get_cs_keyid(cs, rx->skb);
keyid = ieee80211_get_keyid(rx->skb, cs);
if (unlikely(keyid < 0))
return RX_DROP_UNUSABLE;
ptk_idx = rcu_dereference(rx->sta->ptk[keyid]);
}
sta_ptk = rcu_dereference(rx->sta->ptk[keyid]);
}
if (!ieee80211_has_protected(fc))
mmie_keyidx = ieee80211_get_mmie_keyidx(rx->skb);
if (!is_multicast_ether_addr(hdr->addr1) && sta_ptk) {
rx->key = sta_ptk;
rx->key = ptk_idx ? ptk_idx : sta_ptk;
if ((status->flag & RX_FLAG_DECRYPTED) &&
(status->flag & RX_FLAG_IV_STRIPPED))
return RX_CONTINUE;
@@ -1974,8 +1997,6 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
}
return RX_CONTINUE;
} else {
u8 keyid;
/*
* The device doesn't give us the IV so we won't be
* able to look up the key. That's ok though, we
@@ -1989,23 +2010,10 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
(status->flag & RX_FLAG_IV_STRIPPED))
return RX_CONTINUE;
hdrlen = ieee80211_hdrlen(fc);
keyidx = ieee80211_get_keyid(rx->skb, cs);
if (cs) {
keyidx = ieee80211_get_cs_keyid(cs, rx->skb);
if (unlikely(keyidx < 0))
return RX_DROP_UNUSABLE;
} else {
if (rx->skb->len < 8 + hdrlen)
return RX_DROP_UNUSABLE; /* TODO: count this? */
/*
* no need to call ieee80211_wep_get_keyidx,
* it verifies a bunch of things we've done already
*/
skb_copy_bits(rx->skb, hdrlen + 3, &keyid, 1);
keyidx = keyid >> 6;
}
if (unlikely(keyidx < 0))
return RX_DROP_UNUSABLE;
/* check per-station GTK first, if multicast packet */
if (is_multicast_ether_addr(hdr->addr1) && rx->sta)
@@ -4050,12 +4058,8 @@ void ieee80211_check_fast_rx(struct sta_info *sta)
case WLAN_CIPHER_SUITE_GCMP_256:
break;
default:
/* we also don't want to deal with WEP or cipher scheme
* since those require looking up the key idx in the
* frame, rather than assuming the PTK is used
* (we need to revisit this once we implement the real
* PTK index, which is now valid in the spec, but we
* haven't implemented that part yet)
/* We also don't want to deal with
* WEP or cipher scheme.
*/
goto clear_rcu;
}