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dhd_linux_rx.c
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/*
* Broadcom Dongle Host Driver (DHD),
* Linux-specific network interface for receive(rx) path
*
* Copyright (C) 2023, Broadcom.
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
*
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
* you also meet, for each linked independent module, the terms and conditions of
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
*
*
* <<Broadcom-WL-IPTag/Dual:>>
*
*/
#include <typedefs.h>
#include <linuxver.h>
#include <osl.h>
#ifdef SHOW_LOGTRACE
#include <linux/syscalls.h>
#include <event_log.h>
#endif /* SHOW_LOGTRACE */
#ifdef PCIE_FULL_DONGLE
#include <bcmmsgbuf.h>
#endif /* PCIE_FULL_DONGLE */
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/rtnetlink.h>
#include <linux/etherdevice.h>
#include <linux/random.h>
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/fcntl.h>
#include <linux/fs.h>
#include <linux/ip.h>
#include <linux/reboot.h>
#include <linux/notifier.h>
#include <linux/irq.h>
#if defined(CONFIG_TIZEN)
#include <linux/net_stat_tizen.h>
#endif /* CONFIG_TIZEN */
#include <net/addrconf.h>
#ifdef ENABLE_ADAPTIVE_SCHED
#include <linux/cpufreq.h>
#endif /* ENABLE_ADAPTIVE_SCHED */
#include <linux/rtc.h>
#include <linux/namei.h>
#include <asm/uaccess.h>
#include <asm/unaligned.h>
#include <dhd_linux_priv.h>
#include <epivers.h>
#include <bcmutils.h>
#include <bcmendian.h>
#include <bcmdevs.h>
#include <bcmdevs_legacy.h> /* need to still support chips no longer in trunk firmware */
#include <bcmiov.h>
#include <bcmstdlib_s.h>
#include <ethernet.h>
#include <bcmevent.h>
#include <vlan.h>
#include <802.3.h>
#ifdef WL_NANHO
#include <nanho.h>
#endif /* WL_NANHO */
#include <dhd_linux_wq.h>
#include <dhd.h>
#include <dhd_linux.h>
#include <dhd_linux_pktdump.h>
#ifdef DHD_WET
#include <dhd_wet.h>
#endif /* DHD_WET */
#ifdef PCIE_FULL_DONGLE
#include <dhd_flowring.h>
#endif
#include <dhd_bus.h>
#include <dhd_proto.h>
#include <dhd_dbg.h>
#include <dhd_dbg_ring.h>
#include <dhd_debug.h>
#if defined(WL_CFG80211)
#include <wl_cfg80211.h>
#ifdef WL_BAM
#include <wl_bam.h>
#endif /* WL_BAM */
#endif /* WL_CFG80211 */
#ifdef PNO_SUPPORT
#include <dhd_pno.h>
#endif
#ifdef RTT_SUPPORT
#include <dhd_rtt.h>
#endif
#ifdef DHD_TIMESYNC
#include <dhd_timesync.h>
#include <linux/ip.h>
#include <net/icmp.h>
#endif /* DHD_TIMESYNC */
#include <dhd_linux_sock_qos.h>
#ifdef CONFIG_COMPAT
#include <linux/compat.h>
#endif
#ifdef DHD_WMF
#include <dhd_wmf_linux.h>
#endif /* DHD_WMF */
#ifdef DHD_L2_FILTER
#include <bcmicmp.h>
#include <bcm_l2_filter.h>
#include <dhd_l2_filter.h>
#endif /* DHD_L2_FILTER */
#ifdef DHD_PSTA
#include <dhd_psta.h>
#endif /* DHD_PSTA */
#ifdef AMPDU_VO_ENABLE
/* Enabling VO AMPDU to reduce FER */
#include <802.1d.h>
#endif /* AMPDU_VO_ENABLE */
#if defined(DHDTCPACK_SUPPRESS) || defined(DHDTCPSYNC_FLOOD_BLK)
#include <dhd_ip.h>
#endif /* DHDTCPACK_SUPPRESS || DHDTCPSYNC_FLOOD_BLK */
#include <dhd_daemon.h>
#ifdef DHD_PKT_LOGGING
#include <dhd_pktlog.h>
#endif /* DHD_PKT_LOGGING */
#ifdef DHD_4WAYM4_FAIL_DISCONNECT
#include <eapol.h>
#endif /* DHD_4WAYM4_FAIL_DISCONNECT */
#if defined(DHD_TCP_WINSIZE_ADJUST)
#include <linux/tcp.h>
#include <net/tcp.h>
#endif /* DHD_TCP_WINSIZE_ADJUST */
#ifdef ENABLE_DHD_GRO
#include <net/sch_generic.h>
#endif /* ENABLE_DHD_GRO */
#ifdef FIX_CPU_MIN_CLOCK
#include <linux/pm_qos.h>
#endif /* FIX_CPU_MIN_CLOCK */
#ifdef PROP_TXSTATUS
#include <wlfc_proto.h>
#include <dhd_wlfc.h>
#endif
#if defined(OEM_ANDROID)
#include <wl_android.h>
#endif
/* RX frame thread priority */
int dhd_rxf_prio = CUSTOM_RXF_PRIO_SETTING;
module_param(dhd_rxf_prio, int, 0);
/* Request scheduling of the bus rx frame */
static void dhd_os_rxflock(dhd_pub_t *pub);
static void dhd_os_rxfunlock(dhd_pub_t *pub);
static int dhd_wl_host_event(dhd_info_t *dhd, int ifidx, void *pktdata, uint16 pktlen,
wl_event_msg_t *event_ptr, void **data_ptr);
static inline int dhd_rxf_enqueue(dhd_pub_t *dhdp, void* skb)
{
uint32 store_idx;
uint32 sent_idx;
if (!skb) {
DHD_ERROR(("dhd_rxf_enqueue: NULL skb!!!\n"));
return BCME_ERROR;
}
dhd_os_rxflock(dhdp);
store_idx = dhdp->store_idx;
sent_idx = dhdp->sent_idx;
if (dhdp->skbbuf[store_idx] != NULL) {
/* Make sure the previous packets are processed */
dhd_os_rxfunlock(dhdp);
#ifdef RXF_DEQUEUE_ON_BUSY
DHD_TRACE(("dhd_rxf_enqueue: pktbuf not consumed %p, store idx %d sent idx %d\n",
skb, store_idx, sent_idx));
return BCME_BUSY;
#else /* RXF_DEQUEUE_ON_BUSY */
DHD_PRINT(("dhd_rxf_enqueue: pktbuf not consumed %p, store idx %d sent idx %d\n",
skb, store_idx, sent_idx));
/* removed msleep here, should use wait_event_timeout if we
* want to give rx frame thread a chance to run
*/
#if defined(WAIT_DEQUEUE)
OSL_SLEEP(1);
#endif
return BCME_ERROR;
#endif /* RXF_DEQUEUE_ON_BUSY */
}
DHD_TRACE(("dhd_rxf_enqueue: Store SKB %p. idx %d -> %d\n",
skb, store_idx, (store_idx + 1) & (MAXSKBPEND - 1)));
dhdp->skbbuf[store_idx] = skb;
dhdp->store_idx = (store_idx + 1) & (MAXSKBPEND - 1);
dhd_os_rxfunlock(dhdp);
return BCME_OK;
}
static inline void* dhd_rxf_dequeue(dhd_pub_t *dhdp)
{
uint32 store_idx;
uint32 sent_idx;
void *skb;
dhd_os_rxflock(dhdp);
store_idx = dhdp->store_idx;
sent_idx = dhdp->sent_idx;
skb = dhdp->skbbuf[sent_idx];
if (skb == NULL) {
dhd_os_rxfunlock(dhdp);
DHD_ERROR(("dhd_rxf_dequeue: Dequeued packet is NULL, store idx %d sent idx %d\n",
store_idx, sent_idx));
return NULL;
}
dhdp->skbbuf[sent_idx] = NULL;
dhdp->sent_idx = (sent_idx + 1) & (MAXSKBPEND - 1);
DHD_TRACE(("dhd_rxf_dequeue: netif_rx_ni(%p), sent idx %d\n",
skb, sent_idx));
dhd_os_rxfunlock(dhdp);
return skb;
}
#if (defined(DHD_WET) || defined(DHD_MCAST_REGEN) || defined(DHD_L2_FILTER))
static void
dhd_update_rx_pkt_chainable_state(dhd_pub_t* dhdp, uint32 idx)
{
dhd_info_t *dhd = dhdp->info;
dhd_if_t *ifp;
ASSERT(idx < DHD_MAX_IFS);
ifp = dhd->iflist[idx];
if (
#ifdef DHD_L2_FILTER
(ifp->block_ping) ||
#endif
#ifdef DHD_WET
(dhd->wet_mode) ||
#endif
#ifdef DHD_MCAST_REGEN
(ifp->mcast_regen_bss_enable) ||
#endif
FALSE) {
ifp->rx_pkt_chainable = FALSE;
}
}
#endif /* DHD_WET || DHD_MCAST_REGEN || DHD_L2_FILTER */
#ifdef DHD_PCIE_NATIVE_RUNTIMEPM
void dhd_rx_wq_wakeup(struct work_struct *ptr)
{
struct dhd_rx_tx_work *work;
struct dhd_pub * pub;
work = container_of(ptr, struct dhd_rx_tx_work, work);
pub = work->pub;
DHD_RPM(("%s: ENTER. \n", __FUNCTION__));
if (atomic_read(&pub->block_bus) || pub->busstate == DHD_BUS_DOWN) {
return;
}
DHD_OS_WAKE_LOCK(pub);
if (pm_runtime_get_sync(dhd_bus_to_dev(pub->bus)) >= 0) {
// do nothing but wakeup the bus.
pm_runtime_mark_last_busy(dhd_bus_to_dev(pub->bus));
pm_runtime_put_autosuspend(dhd_bus_to_dev(pub->bus));
}
DHD_OS_WAKE_UNLOCK(pub);
kfree(work);
}
#endif /* DHD_PCIE_NATIVE_RUNTIMEPM */
#ifdef DHD_WMF
bool
dhd_is_rxthread_enabled(dhd_pub_t *dhdp)
{
dhd_info_t *dhd = dhdp->info;
return dhd->rxthread_enabled;
}
#endif /* DHD_WMF */
/** Called when a frame is received by the dongle on interface 'ifidx' */
void
dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, void *pktbuf, int numpkt, uint8 chan)
{
dhd_info_t *dhd = (dhd_info_t *)dhdp->info;
struct sk_buff *skb;
uchar *eth;
uint len;
void *data, *pnext = NULL;
int i;
dhd_if_t *ifp;
wl_event_msg_t event;
#if defined(OEM_ANDROID)
int tout_rx = 0;
int tout_ctrl = 0;
#endif /* OEM_ANDROID */
void *skbhead = NULL;
void *skbprev = NULL;
uint16 protocol;
unsigned char *dump_data;
#ifdef DHD_MCAST_REGEN
uint8 interface_role;
if_flow_lkup_t *if_flow_lkup;
unsigned long flags;
#endif
#ifdef DHD_WAKE_STATUS
wake_counts_t *wcp = NULL;
#endif /* DHD_WAKE_STATUS */
int pkt_wake = 0;
#ifdef ENABLE_DHD_GRO
bool dhd_gro_enable = TRUE;
struct Qdisc *qdisc = NULL;
#endif /* ENABLE_DHD_GRO */
DHD_TRACE(("%s: Enter\n", __FUNCTION__));
BCM_REFERENCE(dump_data);
BCM_REFERENCE(pkt_wake);
#ifdef ENABLE_DHD_GRO
if (ifidx < DHD_MAX_IFS) {
ifp = dhd->iflist[ifidx];
if (ifp && ifp->net->qdisc) {
if (ifp->net->qdisc->ops->cl_ops) {
dhd_gro_enable = FALSE;
DHD_TRACE(("%s: disable sw gro becasue of"
" qdisc tx traffic control\n", __FUNCTION__));
}
if (dev_ingress_queue(ifp->net)) {
qdisc = dev_ingress_queue(ifp->net)->qdisc_sleeping;
if (qdisc != NULL && (qdisc->flags & TCQ_F_INGRESS)) {
#ifdef CONFIG_NET_CLS_ACT
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0))
if (ifp->net->miniq_ingress != NULL)
#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0))
if (ifp->net->ingress_cl_list != NULL)
#endif /* LINUX_VERSION >= 4.2.0 */
{
dhd_gro_enable = FALSE;
DHD_TRACE(("%s: disable sw gro because of"
" qdisc rx traffic control\n", __FUNCTION__));
}
#endif /* CONFIG_NET_CLS_ACT */
}
}
}
}
#ifdef DHD_GRO_ENABLE_HOST_CTRL
if (!dhdp->permitted_gro && dhd_gro_enable) {
dhd_gro_enable = FALSE;
}
#endif /* DHD_GRO_ENABLE_HOST_CTRL */
#endif /* ENABLE_DHD_GRO */
for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {
struct ether_header *eh;
pnext = PKTNEXT(dhdp->osh, pktbuf);
PKTSETNEXT(dhdp->osh, pktbuf, NULL);
/* info ring "debug" data, which is not a 802.3 frame, is sent/hacked with a
* special ifidx of DHD_DUMMY_INFO_IF. This is just internal to dhd to get the data
* from dhd_msgbuf.c:dhd_prot_infobuf_cmplt_process() to here (dhd_rx_frame).
*/
if (ifidx == DHD_DUMMY_INFO_IF) {
/* Event msg printing is called from dhd_rx_frame which is in Tasklet
* context in case of PCIe FD, in case of other bus this will be from
* DPC context. If we get bunch of events from Dongle then printing all
* of them from Tasklet/DPC context that too in data path is costly.
* Also in the new Dongle SW(4359, 4355 onwards) console prints too come as
* events with type WLC_E_TRACE.
* We'll print this console logs from the WorkQueue context by enqueing SKB
* here and Dequeuing will be done in WorkQueue and will be freed only if
* logtrace_pkt_sendup is TRUE
*/
#ifdef SHOW_LOGTRACE
dhd_event_logtrace_enqueue(dhdp, ifidx, pktbuf);
#else /* !SHOW_LOGTRACE */
/* If SHOW_LOGTRACE not defined and ifidx is DHD_DUMMY_INFO_IF,
* free the PKT here itself
*/
PKTFREE_CTRLBUF(dhdp->osh, pktbuf, FALSE);
#endif /* SHOW_LOGTRACE */
continue;
}
eh = (struct ether_header *)PKTDATA(dhdp->osh, pktbuf);
/* Check if dhd_stop is in progress */
if (dhdp->stop_in_progress) {
DHD_ERROR_RLMT(("%s: dhd_stop in progress ignore received packet\n",
__FUNCTION__));
RX_PKTFREE(dhdp->osh, eh->ether_type, pktbuf, FALSE);
continue;
}
#ifdef DHD_WAKE_STATUS
/* Get pkt_wake and clear it */
#if defined(BCMPCIE)
pkt_wake = dhd_bus_set_get_bus_wake_pkt_dump(dhdp, 0);
#else /* SDIO */
pkt_wake = dhd_bus_set_get_bus_wake(dhdp, 0);
#endif /* BCMPCIE */
wcp = dhd_bus_get_wakecount(dhdp);
if (wcp == NULL) {
/* If wakeinfo count buffer is null do not update wake count values */
pkt_wake = 0;
}
#endif /* DHD_WAKE_STATUS */
if (dhd->pub.tput_data.tput_test_running &&
dhd->pub.tput_data.direction == TPUT_DIR_RX &&
ntoh16(eh->ether_type) == ETHER_TYPE_IP) {
dhd_tput_test_rx(dhdp, pktbuf);
PKTFREE(dhd->pub.osh, pktbuf, FALSE);
continue;
}
if (ifidx >= DHD_MAX_IFS) {
DHD_ERROR(("%s: ifidx(%d) Out of bound. drop packet\n",
__FUNCTION__, ifidx));
RX_PKTFREE(dhdp->osh, eh->ether_type, pktbuf, FALSE);
continue;
}
ifp = dhd->iflist[ifidx];
if (ifp == NULL) {
DHD_ERROR_RLMT(("%s: ifp is NULL. drop packet\n",
__FUNCTION__));
RX_PKTFREE(dhdp->osh, eh->ether_type, pktbuf, FALSE);
continue;
}
/* Dropping only data packets before registering net device to avoid kernel panic */
#ifndef PROP_TXSTATUS_VSDB
if ((!ifp->net || ifp->net->reg_state != NETREG_REGISTERED) &&
(ntoh16(eh->ether_type) != ETHER_TYPE_BRCM))
#else
if ((!ifp->net || ifp->net->reg_state != NETREG_REGISTERED || !dhd->pub.up) &&
(ntoh16(eh->ether_type) != ETHER_TYPE_BRCM))
#endif /* PROP_TXSTATUS_VSDB */
{
DHD_ERROR(("%s: net device is NOT registered yet. drop packet\n",
__FUNCTION__));
PKTCFREE(dhdp->osh, pktbuf, FALSE);
continue;
}
#ifdef PROP_TXSTATUS
if (dhd_wlfc_is_header_only_pkt(dhdp, pktbuf)) {
/* WLFC may send header only packet when
there is an urgent message but no packet to
piggy-back on
*/
PKTCFREE(dhdp->osh, pktbuf, FALSE);
continue;
}
#endif
#ifdef DHD_L2_FILTER
/* If block_ping is enabled drop the ping packet */
if (ifp->block_ping) {
if (bcm_l2_filter_block_ping(dhdp->osh, pktbuf) == BCME_OK) {
PKTCFREE(dhdp->osh, pktbuf, FALSE);
continue;
}
}
if (ifp->grat_arp && DHD_IF_ROLE_STA(dhdp, ifidx)) {
if (bcm_l2_filter_gratuitous_arp(dhdp->osh, pktbuf) == BCME_OK) {
PKTCFREE(dhdp->osh, pktbuf, FALSE);
continue;
}
}
if (ifp->parp_enable && DHD_IF_ROLE_AP(dhdp, ifidx)) {
int ret = dhd_l2_filter_pkt_handle(dhdp, ifidx, pktbuf, FALSE);
/* Drop the packets if l2 filter has processed it already
* otherwise continue with the normal path
*/
if (ret == BCME_OK) {
PKTCFREE(dhdp->osh, pktbuf, TRUE);
continue;
}
}
if (ifp->block_tdls) {
if (bcm_l2_filter_block_tdls(dhdp->osh, pktbuf) == BCME_OK) {
PKTCFREE(dhdp->osh, pktbuf, FALSE);
continue;
}
}
#endif /* DHD_L2_FILTER */
#ifdef DHD_MCAST_REGEN
DHD_FLOWID_LOCK(dhdp->flowid_lock, flags);
if_flow_lkup = (if_flow_lkup_t *)dhdp->if_flow_lkup;
ASSERT(if_flow_lkup);
interface_role = if_flow_lkup[ifidx].role;
DHD_FLOWID_UNLOCK(dhdp->flowid_lock, flags);
if (ifp->mcast_regen_bss_enable && (interface_role != WLC_E_IF_ROLE_WDS) &&
!DHD_IF_ROLE_AP(dhdp, ifidx) &&
ETHER_ISUCAST(eh->ether_dhost)) {
if (dhd_mcast_reverse_translation(eh) == BCME_OK) {
#ifdef DHD_PSTA
/* Change bsscfg to primary bsscfg for unicast-multicast packets */
if ((dhd_get_psta_mode(dhdp) == DHD_MODE_PSTA) ||
(dhd_get_psta_mode(dhdp) == DHD_MODE_PSR)) {
if (ifidx != 0) {
/* Let the primary in PSTA interface handle this
* frame after unicast to Multicast conversion
*/
ifp = dhd_get_ifp(dhdp, 0);
ASSERT(ifp);
}
}
}
#endif /* PSTA */
}
#endif /* MCAST_REGEN */
#ifdef DHD_WMF
/* WMF processing for multicast packets */
if (ifp->wmf.wmf_enable && (ETHER_ISMULTI(eh->ether_dhost))) {
dhd_sta_t *sta;
int ret;
sta = dhd_find_sta(dhdp, ifidx, (void *)eh->ether_shost);
ret = dhd_wmf_packets_handle(dhdp, pktbuf, sta, ifidx, 1);
switch (ret) {
case WMF_TAKEN:
/* The packet is taken by WMF. Continue to next iteration */
continue;
case WMF_DROP:
/* Packet DROP decision by WMF. Toss it */
DHD_ERROR(("%s: WMF decides to drop packet\n",
__FUNCTION__));
PKTCFREE(dhdp->osh, pktbuf, FALSE);
continue;
default:
/* Continue the transmit path */
break;
}
}
#endif /* DHD_WMF */
#ifdef DHDTCPSYNC_FLOOD_BLK
if (dhd_tcpdata_get_flag(dhdp, pktbuf) == FLAG_SYNC) {
int delta_sec;
int delta_sync;
int sync_per_sec;
u64 curr_time = DIV_U64_BY_U32(OSL_LOCALTIME_NS(), NSEC_PER_SEC);
ifp->tsync_rcvd ++;
delta_sync = ifp->tsync_rcvd - ifp->tsyncack_txed;
delta_sec = curr_time - ifp->last_sync;
if (delta_sec > 1) {
sync_per_sec = delta_sync/delta_sec;
if (sync_per_sec > TCP_SYNC_FLOOD_LIMIT) {
schedule_work(&ifp->blk_tsfl_work);
DHD_ERROR(("ifx %d TCP SYNC Flood attack suspected! "
"sync recvied %d pkt/sec \n",
ifidx, sync_per_sec));
ifp->tsync_per_sec = sync_per_sec;
}
dhd_reset_tcpsync_info_by_ifp(ifp);
}
}
#endif /* DHDTCPSYNC_FLOOD_BLK */
#ifdef DHDTCPACK_SUPPRESS
dhd_tcpdata_info_get(dhdp, pktbuf);
#endif
skb = PKTTONATIVE(dhdp->osh, pktbuf);
ASSERT(ifp);
skb->dev = ifp->net;
#ifdef DHD_WET
/* wet related packet proto manipulation should be done in DHD
* since dongle doesn't have complete payload
*/
if (WET_ENABLED(&dhd->pub) && (dhd_wet_recv_proc(dhd->pub.wet_info,
pktbuf) < 0)) {
DHD_INFO(("%s:%s: wet recv proc failed\n",
__FUNCTION__, dhd_ifname(dhdp, ifidx)));
}
#endif /* DHD_WET */
#ifdef DHD_PSTA
if (PSR_ENABLED(dhdp) &&
#ifdef BCM_ROUTER_DHD
!(ifp->primsta_dwds) &&
#endif /* BCM_ROUTER_DHD */
(dhd_psta_proc(dhdp, ifidx, &pktbuf, FALSE) < 0)) {
DHD_ERROR(("%s:%s: psta recv proc failed\n", __FUNCTION__,
dhd_ifname(dhdp, ifidx)));
}
#endif /* DHD_PSTA */
#if defined(BCM_ROUTER_DHD)
/* Use WOFA for both dhdap and dhdap-atlas router. */
/* dhd_sendpkt verify pkt accounting (TO/FRM NATIVE) and PKTCFREE */
if (DHD_IF_ROLE_AP(dhdp, ifidx) && (!ifp->ap_isolate)) {
eh = (struct ether_header *)PKTDATA(dhdp->osh, pktbuf);
if (ETHER_ISUCAST(eh->ether_dhost)) {
if (dhd_find_sta(dhdp, ifidx, (void *)eh->ether_dhost)) {
dhd_sendpkt(dhdp, ifidx, pktbuf);
continue;
}
} else {
void *npkt;
#if defined(HNDCTF)
if (PKTISCHAINED(pktbuf)) { /* WAR */
DHD_ERROR(("Error: %s():%d Chained non unicast pkt<%p>\n",
__FUNCTION__, __LINE__, pktbuf));
PKTFRMNATIVE(dhdp->osh, pktbuf);
PKTCFREE(dhdp->osh, pktbuf, FALSE);
continue;
}
#endif /* HNDCTF */
if ((ntoh16(eh->ether_type) != ETHER_TYPE_IAPP_L2_UPDATE) &&
((npkt = PKTDUP(dhdp->osh, pktbuf)) != NULL))
dhd_sendpkt(dhdp, ifidx, npkt);
}
}
#if defined(HNDCTF)
/* try cut thru' before sending up */
if (dhd_ctf_forward(dhd, skb, &pnext) == BCME_OK) {
continue;
}
#endif /* HNDCTF */
#else /* !BCM_ROUTER_DHD */
#ifdef PCIE_FULL_DONGLE
if ((DHD_IF_ROLE_AP(dhdp, ifidx) || DHD_IF_ROLE_P2PGO(dhdp, ifidx)) &&
(!ifp->ap_isolate)) {
eh = (struct ether_header *)PKTDATA(dhdp->osh, pktbuf);
if (ETHER_ISUCAST(eh->ether_dhost)) {
if (dhd_find_sta(dhdp, ifidx, (void *)eh->ether_dhost)) {
dhdp->rx_forward++; /* Local count */
dhd_sendpkt(dhdp, ifidx, pktbuf);
continue;
}
} else {
if ((ntoh16(eh->ether_type) != ETHER_TYPE_IAPP_L2_UPDATE)) {
void *npktbuf = NULL;
/*
* If host_sfhllc_supported enabled, do skb_copy as SFHLLC
* header will be inserted during Tx, due to which network
* stack will not decode the Rx packet.
* Else PKTDUP(skb_clone) is enough.
*/
if (dhdp->host_sfhllc_supported) {
npktbuf = skb_copy(skb, GFP_ATOMIC);
} else {
npktbuf = PKTDUP(dhdp->osh, pktbuf);
}
if (npktbuf != NULL) {
dhdp->rx_forward++; /* Local count */
dhd_sendpkt(dhdp, ifidx, npktbuf);
}
}
}
}
#endif /* PCIE_FULL_DONGLE */
#endif /* BCM_ROUTER_DHD */
#ifdef DHD_POST_EAPOL_M1_AFTER_ROAM_EVT
if (IS_STA_IFACE(ndev_to_wdev(ifp->net)) &&
(ifp->recv_reassoc_evt == TRUE) && (ifp->post_roam_evt == FALSE) &&
(dhd_is_4way_msg((char *)(skb->data)) == EAPOL_4WAY_M1)) {
DHD_ERROR(("%s: Reassoc is in progress. "
"Drop EAPOL M1 frame\n", __FUNCTION__));
PKTFREE(dhdp->osh, pktbuf, FALSE);
continue;
}
#endif /* DHD_POST_EAPOL_M1_AFTER_ROAM_EVT */
/* Get the protocol, maintain skb around eth_type_trans()
* The main reason for this hack is for the limitation of
* Linux 2.4 where 'eth_type_trans' uses the 'net->hard_header_len'
* to perform skb_pull inside vs ETH_HLEN. Since to avoid
* coping of the packet coming from the network stack to add
* BDC, Hardware header etc, during network interface registration
* we set the 'net->hard_header_len' to ETH_HLEN + extra space required
* for BDC, Hardware header etc. and not just the ETH_HLEN
*/
eth = skb->data;
len = skb->len;
dump_data = skb->data;
protocol = (skb->data[12] << 8) | skb->data[13];
if (protocol == ETHER_TYPE_802_1X) {
DBG_EVENT_LOG(dhdp, WIFI_EVENT_DRIVER_EAPOL_FRAME_RECEIVED);
#if defined(WL_CFG80211) && defined(WL_WPS_SYNC)
wl_handle_wps_states(ifp->net, dump_data, len, FALSE);
#endif /* WL_CFG80211 && WL_WPS_SYNC */
#ifdef DHD_4WAYM4_FAIL_DISCONNECT
if (dhd_is_4way_msg((uint8 *)(skb->data)) == EAPOL_4WAY_M3) {
OSL_ATOMIC_SET(dhdp->osh, &ifp->m4state, M3_RXED);
}
#endif /* DHD_4WAYM4_FAIL_DISCONNECT */
}
dhd_rx_pkt_dump(dhdp, ifidx, dump_data, len);
dhd_handle_pktdata(dhdp, ifidx, skb, dump_data, FALSE,
len, NULL, NULL, NULL, FALSE, pkt_wake, TRUE);
#if defined(DHD_WAKE_STATUS) && defined(DHD_WAKEPKT_DUMP)
if (pkt_wake) {
DHD_PRINT(("##### dhdpcie_host_wake caused by packets\n"));
dhd_prhex("[wakepkt_dump]", (char*)dump_data, MIN(len, 64), DHD_RPM_VAL);
DHD_PRINT(("config check in_suspend: %d\n", dhdp->in_suspend));
#ifdef ARP_OFFLOAD_SUPPORT
DHD_PRINT(("arp hmac_update:%d \n", dhdp->hmac_updated));
#endif /* ARP_OFFLOAD_SUPPORT */
#if defined(DHD_WAKEPKT_SET_MARK) && defined(CONFIG_NF_CONNTRACK_MARK)
PKTMARK(skb) |= 0x80000000;
#endif /* DHD_WAKEPKT_SET_MARK && CONFIG_NF_CONNTRACK_MARK */
}
#endif /* DHD_WAKE_STATUS && DHD_WAKEPKT_DUMP */
skb->protocol = eth_type_trans(skb, skb->dev);
if (skb->pkt_type == PACKET_MULTICAST) {
dhd->pub.rx_multicast++;
ifp->stats.multicast++;
}
skb->data = eth;
skb->len = len;
/* TODO: re-look into dropped packets. */
DHD_DBG_PKT_MON_RX(dhdp, skb, FRAME_TYPE_ETHERNET_II, FALSE);
if (ntoh16(skb->protocol) == ETHER_TYPE_BRCM) {
DHD_LOG_ROUTE_EVENTS(dhdp->logger, skb, skb->len);
}
/* Strip header, count, deliver upward */
skb_pull(skb, ETH_HLEN);
#ifdef ENABLE_WAKEUP_PKT_DUMP
if (dhd_mmc_wake) {
DHD_INFO(("wake_pkt %s(%d)\n", __FUNCTION__, __LINE__));
prhex("wake_pkt", (char*) eth, MIN(len, 64));
update_wake_pkt_info(skb);
DHD_PRINT(("wake_pkt %s(%d), raw_info=0x%016llx\n",
__FUNCTION__, __LINE__, temp_raw))
#ifdef CONFIG_IRQ_HISTORY
add_irq_history(0, "WIFI");
#endif
dhd_mmc_wake = FALSE;
}
#endif /* ENABLE_WAKEUP_PKT_DUMP */
/* Process special event packets and then discard them */
/* Decide on a better way to fit this in */
bzero(&event, sizeof(event));
if (ntoh16(skb->protocol) == ETHER_TYPE_BRCM) {
bcm_event_msg_u_t evu;
int ret_event, event_type;
void *pkt_data = skb_mac_header(skb);
ret_event = wl_host_event_get_data(pkt_data, len, &evu);
if (ret_event != BCME_OK) {
DHD_ERROR(("%s: wl_host_event_get_data err = %d\n",
__FUNCTION__, ret_event));
PKTFREE_CTRLBUF(dhdp->osh, pktbuf, FALSE);
continue;
}
memcpy(&event, &evu.event, sizeof(wl_event_msg_t));
event_type = ntoh32_ua((void *)&event.event_type);
#ifdef SHOW_LOGTRACE
/* Event msg printing is called from dhd_rx_frame which is in Tasklet
* context in case of PCIe FD, in case of other bus this will be from
* DPC context. If we get bunch of events from Dongle then printing all
* of them from Tasklet/DPC context that too in data path is costly.
* Also in the new Dongle SW(4359, 4355 onwards) console prints too come as
* events with type WLC_E_TRACE.
* We'll print this console logs from the WorkQueue context by enqueing SKB
* here and Dequeuing will be done in WorkQueue and will be freed only if
* logtrace_pkt_sendup is true
*/
if (event_type == WLC_E_TRACE) {
DHD_TRACE(("%s: WLC_E_TRACE\n", __FUNCTION__));
dhd_event_logtrace_enqueue(dhdp, ifidx, pktbuf);
continue;
}
#endif /* SHOW_LOGTRACE */
ret_event = dhd_wl_host_event(dhd, ifidx, pkt_data, len, &event, &data);
wl_event_to_host_order(&event);
#if defined(OEM_ANDROID)
if (!tout_ctrl)
tout_ctrl = DHD_PACKET_TIMEOUT_MS;
#endif /* OEM_ANDROID */
#if (defined(OEM_ANDROID) && defined(PNO_SUPPORT))
if (event_type == WLC_E_PFN_NET_FOUND) {
/* enforce custom wake lock to garantee that Kernel not suspended */
tout_ctrl = CUSTOM_PNO_EVENT_LOCK_xTIME * DHD_PACKET_TIMEOUT_MS;
}
#endif /* PNO_SUPPORT */
if (numpkt != 1) {
DHD_TRACE(("%s: Got BRCM event packet in a chained packet.\n",
__FUNCTION__));
}
#ifdef DHD_WAKE_STATUS
if (unlikely(pkt_wake)) {
#ifdef DHD_WAKE_EVENT_STATUS
if (event.event_type < WLC_E_LAST) {
#ifdef CUSTOM_WAKE_REASON_STATS
if (wcp->rc_event_idx == MAX_WAKE_REASON_STATS) {
wcp->rc_event_idx = 0;
}
DHD_PRINT(("[pkt_wake] event id %u = %s\n",
event.event_type,
bcmevent_get_name(event.event_type)));
wcp->rc_event[wcp->rc_event_idx] = event.event_type;
wcp->rc_event_idx++;
#else
wcp->rc_event[event.event_type]++;
#endif /* CUSTOM_WAKE_REASON_STATS */
wcp->rcwake++;
pkt_wake = 0;
}
#endif /* DHD_WAKE_EVENT_STATUS */
}
#endif /* DHD_WAKE_STATUS */
/* For delete virtual interface event, wl_host_event returns positive
* i/f index, do not proceed. just free the pkt.
*/
if ((event_type == WLC_E_IF) && (ret_event > 0)) {
DHD_ERROR(("%s: interface is deleted. Free event packet\n",
__FUNCTION__));
PKTFREE_CTRLBUF(dhdp->osh, pktbuf, FALSE);
continue;
}
/*
* For the event packets, there is a possibility
* of ifidx getting modifed.Thus update the ifp
* once again.
*/
ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
ifp = dhd->iflist[ifidx];
#ifndef PROP_TXSTATUS_VSDB
if (!(ifp && ifp->net && (ifp->net->reg_state == NETREG_REGISTERED)))
#else
if (!(ifp && ifp->net && (ifp->net->reg_state == NETREG_REGISTERED) &&
dhd->pub.up))
#endif /* PROP_TXSTATUS_VSDB */
{
DHD_ERROR(("%s: net device is NOT registered. drop event packet\n",
__FUNCTION__));
PKTFREE_CTRLBUF(dhdp->osh, pktbuf, FALSE);
continue;
}
if (dhdp->wl_event_enabled) {
#ifdef DHD_USE_STATIC_CTRLBUF
/* If event bufs are allocated via static buf pool
* and wl events are enabled, make a copy, free the
* local one and send the copy up.
*/
struct sk_buff *nskb = skb_copy(skb, GFP_ATOMIC);
/* Copy event and send it up */
PKTFREE_STATIC(dhdp->osh, pktbuf, FALSE);
if (nskb) {
skb = nskb;
} else {
DHD_ERROR(("skb clone failed. dropping event.\n"));
continue;
}
#endif /* DHD_USE_STATIC_CTRLBUF */
} else {
/* If event enabled not explictly set, drop events */
PKTFREE_CTRLBUF(dhdp->osh, pktbuf, FALSE);
continue;
}
} else {
#if defined(OEM_ANDROID)
tout_rx = DHD_PACKET_TIMEOUT_MS;
/* Override rx wakelock timeout to give hostapd enough time
* to process retry or error handling for handshake
*/
if (IS_AP_IFACE(ndev_to_wdev(ifp->net)) &&
ntoh16(skb->protocol) == ETHER_TYPE_802_1X) {
if (dhd_is_4way_msg(dump_data) == EAPOL_4WAY_M2) {
tout_rx = DHD_HANDSHAKE_TIMEOUT_MS;
}
}
#endif /* OEM_ANDROID */
#ifdef PROP_TXSTATUS
dhd_wlfc_save_rxpath_ac_time(dhdp, (uint8)PKTPRIO(skb));
#endif /* PROP_TXSTATUS */
#ifdef DHD_WAKE_STATUS
if (unlikely(pkt_wake)) {
wcp->rxwake++;
#ifdef DHD_WAKE_RX_STATUS
if (ntoh16(skb->protocol) == ETHER_TYPE_ARP) /* ARP */
wcp->rx_arp++;
if (ntoh16(skb->protocol) == ETHER_TYPE_IP) {
struct iphdr *ipheader = NULL;
ipheader = (struct iphdr*)(skb->data);
if (ipheader && ipheader->protocol == IPPROTO_ICMP) {
wcp->rx_icmp++;
}
}
if (dump_data[0] == 0xFF) { /* Broadcast */
wcp->rx_bcast++;
} else if (dump_data[0] & 0x01) { /* Multicast */
wcp->rx_mcast++;
if (ntoh16(skb->protocol) == ETHER_TYPE_IPV6) {
wcp->rx_multi_ipv6++;
if ((skb->len > ETHER_ICMP6_HEADER) &&
(dump_data[ETHER_ICMP6_HEADER] == IPPROTO_ICMPV6)) {
wcp->rx_icmpv6++;
if (skb->len > ETHER_ICMPV6_TYPE) {
switch (dump_data[ETHER_ICMPV6_TYPE]) {
case NDISC_ROUTER_ADVERTISEMENT:
wcp->rx_icmpv6_ra++;
break;
case NDISC_NEIGHBOUR_ADVERTISEMENT:
wcp->rx_icmpv6_na++;
break;
case NDISC_NEIGHBOUR_SOLICITATION:
wcp->rx_icmpv6_ns++;
break;
}
}
}
} else if (dump_data[2] == 0x5E) {
wcp->rx_multi_ipv4++;
} else {
wcp->rx_multi_other++;
}
} else { /* Unicast */
wcp->rx_ucast++;
}
#undef ETHER_ICMP6_HEADER
#undef ETHER_IPV6_SADDR
#undef ETHER_IPV6_DAADR
#undef ETHER_ICMPV6_TYPE