mirror of
https://github.com/torvalds/linux.git
synced 2024-11-23 04:31:50 +00:00
mac80211: add fast-rx path
The regular RX path has a lot of code, but with a few assumptions on the hardware it's possible to reduce the amount of code significantly. Currently the assumptions on the driver are the following: * hardware/driver reordering buffer (if supporting aggregation) * hardware/driver decryption & PN checking (if using encryption) * hardware/driver did de-duplication * hardware/driver did A-MSDU deaggregation * AP_LINK_PS is used (in AP mode) * no client powersave handling in mac80211 (in client mode) of which some are actually checked per packet: * de-duplication * PN checking * decryption and additionally packets must * not be A-MSDU (have been deaggregated by driver/device) * be data packets * not be fragmented * be unicast * have RFC 1042 header Additionally dynamically we assume: * no encryption or CCMP/GCMP, TKIP/WEP/other not allowed * station must be authorized * 4-addr format not enabled Some data needed for the RX path is cached in a new per-station "fast_rx" structure, so that we only need to look at this and the packet, no other memory when processing packets on the fast RX path. After doing the above per-packet checks, the data path collapses down to a pretty simple conversion function taking advantage of the data cached in the small fast_rx struct. This should speed up the RX processing, and will make it easier to reason about parallelizing RX (for which statistics will need to be per-CPU still.) Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
parent
0f9c5a61d4
commit
49ddf8e6e2
@ -638,6 +638,16 @@ static inline bool ieee80211_is_first_frag(__le16 seq_ctrl)
|
||||
return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* ieee80211_is_frag - check if a frame is a fragment
|
||||
* @hdr: 802.11 header of the frame
|
||||
*/
|
||||
static inline bool ieee80211_is_frag(struct ieee80211_hdr *hdr)
|
||||
{
|
||||
return ieee80211_has_morefrags(hdr->frame_control) ||
|
||||
hdr->seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG);
|
||||
}
|
||||
|
||||
struct ieee80211s_hdr {
|
||||
u8 flags;
|
||||
u8 ttl;
|
||||
|
@ -65,11 +65,13 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
|
||||
return ret;
|
||||
|
||||
if (type == NL80211_IFTYPE_AP_VLAN &&
|
||||
params && params->use_4addr == 0)
|
||||
params && params->use_4addr == 0) {
|
||||
RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
|
||||
else if (type == NL80211_IFTYPE_STATION &&
|
||||
params && params->use_4addr >= 0)
|
||||
ieee80211_check_fast_rx_iface(sdata);
|
||||
} else if (type == NL80211_IFTYPE_STATION &&
|
||||
params && params->use_4addr >= 0) {
|
||||
sdata->u.mgd.use_4addr = params->use_4addr;
|
||||
}
|
||||
|
||||
if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
@ -1367,6 +1369,7 @@ static int ieee80211_change_station(struct wiphy *wiphy,
|
||||
|
||||
rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
|
||||
new_4addr = true;
|
||||
__ieee80211_check_fast_rx_iface(vlansdata);
|
||||
}
|
||||
|
||||
if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
|
||||
@ -1889,6 +1892,7 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
|
||||
sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
|
||||
else
|
||||
sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
|
||||
ieee80211_check_fast_rx_iface(sdata);
|
||||
}
|
||||
|
||||
if (params->ht_opmode >= 0) {
|
||||
|
@ -1494,6 +1494,11 @@ u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local);
|
||||
int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
|
||||
u64 *cookie, gfp_t gfp);
|
||||
|
||||
void ieee80211_check_fast_rx(struct sta_info *sta);
|
||||
void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
|
||||
void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
|
||||
void ieee80211_clear_fast_rx(struct sta_info *sta);
|
||||
|
||||
/* STA code */
|
||||
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
|
||||
int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
|
||||
|
@ -338,6 +338,7 @@ static void ieee80211_key_replace(struct ieee80211_sub_if_data *sdata,
|
||||
} else {
|
||||
rcu_assign_pointer(sta->gtk[idx], new);
|
||||
}
|
||||
ieee80211_check_fast_rx(sta);
|
||||
} else {
|
||||
defunikey = old &&
|
||||
old == key_mtx_dereference(sdata->local,
|
||||
|
@ -2217,6 +2217,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
|
||||
const u8 *ssid;
|
||||
u8 *dst = ifmgd->associated->bssid;
|
||||
u8 unicast_limit = max(1, max_probe_tries - 3);
|
||||
struct sta_info *sta;
|
||||
|
||||
/*
|
||||
* Try sending broadcast probe requests for the last three
|
||||
@ -2235,6 +2236,14 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
|
||||
*/
|
||||
ifmgd->probe_send_count++;
|
||||
|
||||
if (dst) {
|
||||
mutex_lock(&sdata->local->sta_mtx);
|
||||
sta = sta_info_get(sdata, dst);
|
||||
if (!WARN_ON(!sta))
|
||||
ieee80211_check_fast_rx(sta);
|
||||
mutex_unlock(&sdata->local->sta_mtx);
|
||||
}
|
||||
|
||||
if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
|
||||
ifmgd->nullfunc_failed = false;
|
||||
ieee80211_send_nullfunc(sdata->local, sdata, false);
|
||||
|
@ -3508,6 +3508,342 @@ static bool ieee80211_accept_frame(struct ieee80211_rx_data *rx)
|
||||
return false;
|
||||
}
|
||||
|
||||
void ieee80211_check_fast_rx(struct sta_info *sta)
|
||||
{
|
||||
struct ieee80211_sub_if_data *sdata = sta->sdata;
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
struct ieee80211_key *key;
|
||||
struct ieee80211_fast_rx fastrx = {
|
||||
.dev = sdata->dev,
|
||||
.vif_type = sdata->vif.type,
|
||||
.control_port_protocol = sdata->control_port_protocol,
|
||||
}, *old, *new = NULL;
|
||||
bool assign = false;
|
||||
|
||||
/* use sparse to check that we don't return without updating */
|
||||
__acquire(check_fast_rx);
|
||||
|
||||
BUILD_BUG_ON(sizeof(fastrx.rfc1042_hdr) != sizeof(rfc1042_header));
|
||||
BUILD_BUG_ON(sizeof(fastrx.rfc1042_hdr) != ETH_ALEN);
|
||||
ether_addr_copy(fastrx.rfc1042_hdr, rfc1042_header);
|
||||
ether_addr_copy(fastrx.vif_addr, sdata->vif.addr);
|
||||
|
||||
/* fast-rx doesn't do reordering */
|
||||
if (ieee80211_hw_check(&local->hw, AMPDU_AGGREGATION) &&
|
||||
!ieee80211_hw_check(&local->hw, SUPPORTS_REORDERING_BUFFER))
|
||||
goto clear;
|
||||
|
||||
switch (sdata->vif.type) {
|
||||
case NL80211_IFTYPE_STATION:
|
||||
/* 4-addr is harder to deal with, later maybe */
|
||||
if (sdata->u.mgd.use_4addr)
|
||||
goto clear;
|
||||
/* software powersave is a huge mess, avoid all of it */
|
||||
if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
|
||||
goto clear;
|
||||
if (ieee80211_hw_check(&local->hw, SUPPORTS_PS) &&
|
||||
!ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
|
||||
goto clear;
|
||||
if (sta->sta.tdls) {
|
||||
fastrx.da_offs = offsetof(struct ieee80211_hdr, addr1);
|
||||
fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr2);
|
||||
fastrx.expected_ds_bits = 0;
|
||||
} else {
|
||||
fastrx.sta_notify = sdata->u.mgd.probe_send_count > 0;
|
||||
fastrx.da_offs = offsetof(struct ieee80211_hdr, addr1);
|
||||
fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr3);
|
||||
fastrx.expected_ds_bits =
|
||||
cpu_to_le16(IEEE80211_FCTL_FROMDS);
|
||||
}
|
||||
break;
|
||||
case NL80211_IFTYPE_AP_VLAN:
|
||||
case NL80211_IFTYPE_AP:
|
||||
/* parallel-rx requires this, at least with calls to
|
||||
* ieee80211_sta_ps_transition()
|
||||
*/
|
||||
if (!ieee80211_hw_check(&local->hw, AP_LINK_PS))
|
||||
goto clear;
|
||||
fastrx.da_offs = offsetof(struct ieee80211_hdr, addr3);
|
||||
fastrx.sa_offs = offsetof(struct ieee80211_hdr, addr2);
|
||||
fastrx.expected_ds_bits = cpu_to_le16(IEEE80211_FCTL_TODS);
|
||||
|
||||
fastrx.internal_forward =
|
||||
!(sdata->flags & IEEE80211_SDATA_DONT_BRIDGE_PACKETS) &&
|
||||
(sdata->vif.type != NL80211_IFTYPE_AP_VLAN ||
|
||||
!sdata->u.vlan.sta);
|
||||
break;
|
||||
default:
|
||||
goto clear;
|
||||
}
|
||||
|
||||
if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
|
||||
goto clear;
|
||||
|
||||
rcu_read_lock();
|
||||
key = rcu_dereference(sta->ptk[sta->ptk_idx]);
|
||||
if (key) {
|
||||
switch (key->conf.cipher) {
|
||||
case WLAN_CIPHER_SUITE_TKIP:
|
||||
/* we don't want to deal with MMIC in fast-rx */
|
||||
goto clear_rcu;
|
||||
case WLAN_CIPHER_SUITE_CCMP:
|
||||
case WLAN_CIPHER_SUITE_CCMP_256:
|
||||
case WLAN_CIPHER_SUITE_GCMP:
|
||||
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)
|
||||
*/
|
||||
goto clear_rcu;
|
||||
}
|
||||
|
||||
fastrx.key = true;
|
||||
fastrx.icv_len = key->conf.icv_len;
|
||||
}
|
||||
|
||||
assign = true;
|
||||
clear_rcu:
|
||||
rcu_read_unlock();
|
||||
clear:
|
||||
__release(check_fast_rx);
|
||||
|
||||
if (assign)
|
||||
new = kmemdup(&fastrx, sizeof(fastrx), GFP_KERNEL);
|
||||
|
||||
spin_lock_bh(&sta->lock);
|
||||
old = rcu_dereference_protected(sta->fast_rx, true);
|
||||
rcu_assign_pointer(sta->fast_rx, new);
|
||||
spin_unlock_bh(&sta->lock);
|
||||
|
||||
if (old)
|
||||
kfree_rcu(old, rcu_head);
|
||||
}
|
||||
|
||||
void ieee80211_clear_fast_rx(struct sta_info *sta)
|
||||
{
|
||||
struct ieee80211_fast_rx *old;
|
||||
|
||||
spin_lock_bh(&sta->lock);
|
||||
old = rcu_dereference_protected(sta->fast_rx, true);
|
||||
RCU_INIT_POINTER(sta->fast_rx, NULL);
|
||||
spin_unlock_bh(&sta->lock);
|
||||
|
||||
if (old)
|
||||
kfree_rcu(old, rcu_head);
|
||||
}
|
||||
|
||||
void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata)
|
||||
{
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
struct sta_info *sta;
|
||||
|
||||
lockdep_assert_held(&local->sta_mtx);
|
||||
|
||||
list_for_each_entry_rcu(sta, &local->sta_list, list) {
|
||||
if (sdata != sta->sdata &&
|
||||
(!sta->sdata->bss || sta->sdata->bss != sdata->bss))
|
||||
continue;
|
||||
ieee80211_check_fast_rx(sta);
|
||||
}
|
||||
}
|
||||
|
||||
void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata)
|
||||
{
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
|
||||
mutex_lock(&local->sta_mtx);
|
||||
__ieee80211_check_fast_rx_iface(sdata);
|
||||
mutex_unlock(&local->sta_mtx);
|
||||
}
|
||||
|
||||
static bool ieee80211_invoke_fast_rx(struct ieee80211_rx_data *rx,
|
||||
struct ieee80211_fast_rx *fast_rx)
|
||||
{
|
||||
struct sk_buff *skb = rx->skb;
|
||||
struct ieee80211_hdr *hdr = (void *)skb->data;
|
||||
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
|
||||
struct sta_info *sta = rx->sta;
|
||||
int orig_len = skb->len;
|
||||
int snap_offs = ieee80211_hdrlen(hdr->frame_control);
|
||||
struct {
|
||||
u8 snap[sizeof(rfc1042_header)];
|
||||
__be16 proto;
|
||||
} *payload __aligned(2);
|
||||
struct {
|
||||
u8 da[ETH_ALEN];
|
||||
u8 sa[ETH_ALEN];
|
||||
} addrs __aligned(2);
|
||||
|
||||
/* for parallel-rx, we need to have DUP_VALIDATED, otherwise we write
|
||||
* to a common data structure; drivers can implement that per queue
|
||||
* but we don't have that information in mac80211
|
||||
*/
|
||||
if (!(status->flag & RX_FLAG_DUP_VALIDATED))
|
||||
return false;
|
||||
|
||||
#define FAST_RX_CRYPT_FLAGS (RX_FLAG_PN_VALIDATED | RX_FLAG_DECRYPTED)
|
||||
|
||||
/* If using encryption, we also need to have:
|
||||
* - PN_VALIDATED: similar, but the implementation is tricky
|
||||
* - DECRYPTED: necessary for PN_VALIDATED
|
||||
*/
|
||||
if (fast_rx->key &&
|
||||
(status->flag & FAST_RX_CRYPT_FLAGS) != FAST_RX_CRYPT_FLAGS)
|
||||
return false;
|
||||
|
||||
/* we don't deal with A-MSDU deaggregation here */
|
||||
if (status->rx_flags & IEEE80211_RX_AMSDU)
|
||||
return false;
|
||||
|
||||
if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
|
||||
return false;
|
||||
|
||||
if (unlikely(ieee80211_is_frag(hdr)))
|
||||
return false;
|
||||
|
||||
/* Since our interface address cannot be multicast, this
|
||||
* implicitly also rejects multicast frames without the
|
||||
* explicit check.
|
||||
*
|
||||
* We shouldn't get any *data* frames not addressed to us
|
||||
* (AP mode will accept multicast *management* frames), but
|
||||
* punting here will make it go through the full checks in
|
||||
* ieee80211_accept_frame().
|
||||
*/
|
||||
if (!ether_addr_equal(fast_rx->vif_addr, hdr->addr1))
|
||||
return false;
|
||||
|
||||
if ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_FROMDS |
|
||||
IEEE80211_FCTL_TODS)) !=
|
||||
fast_rx->expected_ds_bits)
|
||||
goto drop;
|
||||
|
||||
/* assign the key to drop unencrypted frames (later)
|
||||
* and strip the IV/MIC if necessary
|
||||
*/
|
||||
if (fast_rx->key && !(status->flag & RX_FLAG_IV_STRIPPED)) {
|
||||
/* GCMP header length is the same */
|
||||
snap_offs += IEEE80211_CCMP_HDR_LEN;
|
||||
}
|
||||
|
||||
if (!pskb_may_pull(skb, snap_offs + sizeof(*payload)))
|
||||
goto drop;
|
||||
payload = (void *)(skb->data + snap_offs);
|
||||
|
||||
if (!ether_addr_equal(payload->snap, fast_rx->rfc1042_hdr))
|
||||
return false;
|
||||
|
||||
/* Don't handle these here since they require special code.
|
||||
* Accept AARP and IPX even though they should come with a
|
||||
* bridge-tunnel header - but if we get them this way then
|
||||
* there's little point in discarding them.
|
||||
*/
|
||||
if (unlikely(payload->proto == cpu_to_be16(ETH_P_TDLS) ||
|
||||
payload->proto == fast_rx->control_port_protocol))
|
||||
return false;
|
||||
|
||||
/* after this point, don't punt to the slowpath! */
|
||||
|
||||
if (rx->key && !(status->flag & RX_FLAG_MIC_STRIPPED) &&
|
||||
pskb_trim(skb, skb->len - fast_rx->icv_len))
|
||||
goto drop;
|
||||
|
||||
if (unlikely(fast_rx->sta_notify)) {
|
||||
ieee80211_sta_rx_notify(rx->sdata, hdr);
|
||||
fast_rx->sta_notify = false;
|
||||
}
|
||||
|
||||
/* statistics part of ieee80211_rx_h_sta_process() */
|
||||
sta->rx_stats.last_rx = jiffies;
|
||||
sta->rx_stats.last_rate = sta_stats_encode_rate(status);
|
||||
|
||||
sta->rx_stats.fragments++;
|
||||
|
||||
if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {
|
||||
sta->rx_stats.last_signal = status->signal;
|
||||
ewma_signal_add(&sta->rx_stats_avg.signal, -status->signal);
|
||||
}
|
||||
|
||||
if (status->chains) {
|
||||
int i;
|
||||
|
||||
sta->rx_stats.chains = status->chains;
|
||||
for (i = 0; i < ARRAY_SIZE(status->chain_signal); i++) {
|
||||
int signal = status->chain_signal[i];
|
||||
|
||||
if (!(status->chains & BIT(i)))
|
||||
continue;
|
||||
|
||||
sta->rx_stats.chain_signal_last[i] = signal;
|
||||
ewma_signal_add(&sta->rx_stats_avg.chain_signal[i],
|
||||
-signal);
|
||||
}
|
||||
}
|
||||
/* end of statistics */
|
||||
|
||||
if (rx->key && !ieee80211_has_protected(hdr->frame_control))
|
||||
goto drop;
|
||||
|
||||
/* do the header conversion - first grab the addresses */
|
||||
ether_addr_copy(addrs.da, skb->data + fast_rx->da_offs);
|
||||
ether_addr_copy(addrs.sa, skb->data + fast_rx->sa_offs);
|
||||
/* remove the SNAP but leave the ethertype */
|
||||
skb_pull(skb, snap_offs + sizeof(rfc1042_header));
|
||||
/* push the addresses in front */
|
||||
memcpy(skb_push(skb, sizeof(addrs)), &addrs, sizeof(addrs));
|
||||
|
||||
skb->dev = fast_rx->dev;
|
||||
|
||||
ieee80211_rx_stats(fast_rx->dev, skb->len);
|
||||
|
||||
/* The seqno index has the same property as needed
|
||||
* for the rx_msdu field, i.e. it is IEEE80211_NUM_TIDS
|
||||
* for non-QoS-data frames. Here we know it's a data
|
||||
* frame, so count MSDUs.
|
||||
*/
|
||||
u64_stats_update_begin(&sta->rx_stats.syncp);
|
||||
sta->rx_stats.msdu[rx->seqno_idx]++;
|
||||
sta->rx_stats.bytes += orig_len;
|
||||
u64_stats_update_end(&sta->rx_stats.syncp);
|
||||
|
||||
if (fast_rx->internal_forward) {
|
||||
struct sta_info *dsta = sta_info_get(rx->sdata, skb->data);
|
||||
|
||||
if (dsta) {
|
||||
/*
|
||||
* Send to wireless media and increase priority by 256
|
||||
* to keep the received priority instead of
|
||||
* reclassifying the frame (see cfg80211_classify8021d).
|
||||
*/
|
||||
skb->priority += 256;
|
||||
skb->protocol = htons(ETH_P_802_3);
|
||||
skb_reset_network_header(skb);
|
||||
skb_reset_mac_header(skb);
|
||||
dev_queue_xmit(skb);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
/* deliver to local stack */
|
||||
skb->protocol = eth_type_trans(skb, fast_rx->dev);
|
||||
memset(skb->cb, 0, sizeof(skb->cb));
|
||||
if (rx->napi)
|
||||
napi_gro_receive(rx->napi, skb);
|
||||
else
|
||||
netif_receive_skb(skb);
|
||||
|
||||
return true;
|
||||
drop:
|
||||
dev_kfree_skb(skb);
|
||||
sta->rx_stats.dropped++;
|
||||
return true;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function returns whether or not the SKB
|
||||
* was destined for RX processing or not, which,
|
||||
@ -3522,6 +3858,21 @@ static bool ieee80211_prepare_and_rx_handle(struct ieee80211_rx_data *rx,
|
||||
|
||||
rx->skb = skb;
|
||||
|
||||
/* See if we can do fast-rx; if we have to copy we already lost,
|
||||
* so punt in that case. We should never have to deliver a data
|
||||
* frame to multiple interfaces anyway.
|
||||
*
|
||||
* We skip the ieee80211_accept_frame() call and do the necessary
|
||||
* checking inside ieee80211_invoke_fast_rx().
|
||||
*/
|
||||
if (consume && rx->sta) {
|
||||
struct ieee80211_fast_rx *fast_rx;
|
||||
|
||||
fast_rx = rcu_dereference(rx->sta->fast_rx);
|
||||
if (fast_rx && ieee80211_invoke_fast_rx(rx, fast_rx))
|
||||
return true;
|
||||
}
|
||||
|
||||
if (!ieee80211_accept_frame(rx))
|
||||
return false;
|
||||
|
||||
|
@ -1874,6 +1874,7 @@ int sta_info_move_state(struct sta_info *sta,
|
||||
atomic_dec(&sta->sdata->bss->num_mcast_sta);
|
||||
clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
|
||||
ieee80211_clear_fast_xmit(sta);
|
||||
ieee80211_clear_fast_rx(sta);
|
||||
}
|
||||
break;
|
||||
case IEEE80211_STA_AUTHORIZED:
|
||||
@ -1884,6 +1885,7 @@ int sta_info_move_state(struct sta_info *sta,
|
||||
atomic_inc(&sta->sdata->bss->num_mcast_sta);
|
||||
set_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
|
||||
ieee80211_check_fast_xmit(sta);
|
||||
ieee80211_check_fast_rx(sta);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
|
@ -285,6 +285,38 @@ struct ieee80211_fast_tx {
|
||||
struct rcu_head rcu_head;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ieee80211_fast_rx - RX fastpath information
|
||||
* @dev: netdevice for reporting the SKB
|
||||
* @vif_type: (P2P-less) interface type of the original sdata (sdata->vif.type)
|
||||
* @vif_addr: interface address
|
||||
* @rfc1042_hdr: copy of the RFC 1042 SNAP header (to have in cache)
|
||||
* @control_port_protocol: control port protocol copied from sdata
|
||||
* @expected_ds_bits: from/to DS bits expected
|
||||
* @icv_len: length of the MIC if present
|
||||
* @key: bool indicating encryption is expected (key is set)
|
||||
* @sta_notify: notify the MLME code (once)
|
||||
* @internal_forward: forward froms internally on AP/VLAN type interfaces
|
||||
* @da_offs: offset of the DA in the header (for header conversion)
|
||||
* @sa_offs: offset of the SA in the header (for header conversion)
|
||||
* @rcu_head: RCU head for freeing this structure
|
||||
*/
|
||||
struct ieee80211_fast_rx {
|
||||
struct net_device *dev;
|
||||
enum nl80211_iftype vif_type;
|
||||
u8 vif_addr[ETH_ALEN] __aligned(2);
|
||||
u8 rfc1042_hdr[6] __aligned(2);
|
||||
__be16 control_port_protocol;
|
||||
__le16 expected_ds_bits;
|
||||
u8 icv_len;
|
||||
u8 key:1,
|
||||
sta_notify:1,
|
||||
internal_forward:1;
|
||||
u8 da_offs, sa_offs;
|
||||
|
||||
struct rcu_head rcu_head;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct mesh_sta - mesh STA information
|
||||
* @plink_lock: serialize access to plink fields
|
||||
@ -391,6 +423,7 @@ DECLARE_EWMA(signal, 1024, 8)
|
||||
* @cipher_scheme: optional cipher scheme for this station
|
||||
* @reserved_tid: reserved TID (if any, otherwise IEEE80211_TID_UNRESERVED)
|
||||
* @fast_tx: TX fastpath information
|
||||
* @fast_rx: RX fastpath information
|
||||
* @tdls_chandef: a TDLS peer can have a wider chandef that is compatible to
|
||||
* the BSS one.
|
||||
* @tx_stats: TX statistics
|
||||
@ -414,6 +447,7 @@ struct sta_info {
|
||||
spinlock_t lock;
|
||||
|
||||
struct ieee80211_fast_tx __rcu *fast_tx;
|
||||
struct ieee80211_fast_rx __rcu *fast_rx;
|
||||
|
||||
#ifdef CONFIG_MAC80211_MESH
|
||||
struct mesh_sta *mesh;
|
||||
|
Loading…
Reference in New Issue
Block a user