blob: 40a5a3489ba7dc775f3b621b6ad1d9262e6b8ebd [file] [log] [blame]
/*
* Copyright (c) 2014, 2016-2017 The Linux Foundation. All rights reserved.
*
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
*
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all
* copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This file was originally distributed by Qualcomm Atheros, Inc.
* under proprietary terms before Copyright ownership was assigned
* to the Linux Foundation.
*/
/*========================================================================
\file epping_main.c
\brief WLAN End Point Ping test tool implementation
========================================================================*/
/*--------------------------------------------------------------------------
Include Files
------------------------------------------------------------------------*/
#include <wlan_hdd_includes.h>
#include <vos_api.h>
#include <vos_sched.h>
#include <linux/etherdevice.h>
#include <linux/firmware.h>
#include <wcnss_api.h>
#include <wlan_hdd_tx_rx.h>
#include <wniApi.h>
#include <wlan_nlink_srv.h>
#include <wlan_hdd_cfg.h>
#include <wlan_ptt_sock_svc.h>
#include <wlan_hdd_wowl.h>
#include <wlan_hdd_misc.h>
#include <wlan_hdd_wext.h>
#include <linux/wireless.h>
#include <net/cfg80211.h>
#include <linux/rtnetlink.h>
#include <linux/semaphore.h>
#include <linux/ctype.h>
#include <wlan_hdd_hostapd.h>
#include <wlan_hdd_softap_tx_rx.h>
#include "epping_main.h"
#include "epping_internal.h"
#include "epping_test.h"
#define TX_RETRY_TIMEOUT_IN_MS 1
static bool enb_tx_dump = 0;
void epping_tx_dup_pkt(epping_adapter_t *pAdapter,
HTC_ENDPOINT_ID eid, adf_nbuf_t skb)
{
struct epping_cookie * cookie = NULL;
int skb_len, ret;
adf_nbuf_t new_skb;
cookie = epping_alloc_cookie(pAdapter->pEpping_ctx);
if (cookie == NULL) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: epping_alloc_cookie returns no resource\n", __func__);
return;
}
new_skb = adf_nbuf_copy(skb);
if (!new_skb) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: adf_nbuf_copy returns no resource\n", __func__);
epping_free_cookie(pAdapter->pEpping_ctx, cookie);
return;
}
SET_HTC_PACKET_INFO_TX(&cookie->HtcPkt,
cookie, adf_nbuf_data(skb), adf_nbuf_len(new_skb), eid, 0);
SET_HTC_PACKET_NET_BUF_CONTEXT(&cookie->HtcPkt, new_skb);
skb_len = (int)adf_nbuf_len(new_skb);
/* send the packet */
ret = HTCSendPkt(pAdapter->pEpping_ctx->HTCHandle, &cookie->HtcPkt);
if (ret != A_OK) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: HTCSendPkt failed, ret = %d\n", __func__, ret);
epping_free_cookie(pAdapter->pEpping_ctx, cookie);
adf_nbuf_free(new_skb);
return;
}
pAdapter->stats.tx_bytes += skb_len;
++pAdapter->stats.tx_packets;
if (((pAdapter->stats.tx_packets +
pAdapter->stats.tx_dropped) % EPPING_STATS_LOG_COUNT) == 0 &&
(pAdapter->stats.tx_packets || pAdapter->stats.tx_dropped)) {
epping_log_stats(pAdapter, __func__);
}
}
static int epping_tx_send_int(adf_nbuf_t skb,
epping_adapter_t *pAdapter)
{
EPPING_HEADER *eppingHdr = (EPPING_HEADER *)adf_nbuf_data(skb);
HTC_ENDPOINT_ID eid = ENDPOINT_UNUSED;
struct epping_cookie * cookie = NULL;
A_UINT8 ac = 0;
A_STATUS ret = A_OK;
int skb_len;
EPPING_HEADER tmpHdr = *eppingHdr;
/* allocate resource for this packet */
cookie = epping_alloc_cookie(pAdapter->pEpping_ctx);
/* no resource */
if (cookie == NULL) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: epping_alloc_cookie returns no resource\n", __func__);
return -1;
}
if (enb_tx_dump)
epping_hex_dump((void *)eppingHdr, skb->len, __func__);
/*
* a quirk of linux, the payload of the frame is 32-bit aligned and thus
* the addition of the HTC header will mis-align the start of the HTC
* frame, so we add some padding which will be stripped off in the target
*/
if (EPPING_ALIGNMENT_PAD > 0) {
A_NETBUF_PUSH(skb, EPPING_ALIGNMENT_PAD);
}
/* prepare ep/HTC information */
ac = eppingHdr->StreamNo_h;
eid = pAdapter->pEpping_ctx->EppingEndpoint[ac];
if (eid < 0 || eid >= EPPING_MAX_NUM_EPIDS) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: invalid eid = %d, ac = %d\n", __func__, eid, ac);
return -1;
}
if (tmpHdr.Cmd_h == EPPING_CMD_RESET_RECV_CNT ||
tmpHdr.Cmd_h == EPPING_CMD_CONT_RX_START) {
epping_set_kperf_flag(pAdapter, eid, tmpHdr.CmdBuffer_t[0]);
}
if (pAdapter->pEpping_ctx->kperf[eid]) {
switch (tmpHdr.Cmd_h) {
case EPPING_CMD_NO_ECHO:
#ifdef HIF_PCI
epping_tx_copier_schedule(pAdapter->pEpping_ctx, eid, skb);
#endif /* HIF_PCI */
break;
default:
break;
}
}
if (pAdapter->pEpping_ctx->kperf[eid] &&
tmpHdr.Cmd_h == EPPING_CMD_NO_ECHO) {
epping_tx_dup_pkt(pAdapter, eid, skb);
}
SET_HTC_PACKET_INFO_TX(&cookie->HtcPkt,
cookie, adf_nbuf_data(skb), adf_nbuf_len(skb), eid, 0);
SET_HTC_PACKET_NET_BUF_CONTEXT(&cookie->HtcPkt, skb);
skb_len = skb->len;
/* send the packet */
ret = HTCSendPkt(pAdapter->pEpping_ctx->HTCHandle, &cookie->HtcPkt);
epping_log_packet(pAdapter, &tmpHdr, ret, __func__);
if (ret != A_OK) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: HTCSendPkt failed, status = %d\n", __func__, ret);
epping_free_cookie(pAdapter->pEpping_ctx, cookie);
return -1;
}
pAdapter->stats.tx_bytes += skb_len;
++pAdapter->stats.tx_packets;
if (((pAdapter->stats.tx_packets +
pAdapter->stats.tx_dropped) % EPPING_STATS_LOG_COUNT) == 0 &&
(pAdapter->stats.tx_packets || pAdapter->stats.tx_dropped)) {
epping_log_stats(pAdapter, __func__);
}
return 0;
}
void epping_tx_timer_expire(epping_adapter_t *pAdapter)
{
adf_nbuf_t nodrop_skb;
EPPING_LOG(VOS_TRACE_LEVEL_INFO, "%s: queue len: %d\n", __func__,
adf_nbuf_queue_len(&pAdapter->nodrop_queue));
if (!adf_nbuf_queue_len(&pAdapter->nodrop_queue)) {
/* nodrop queue is empty so no need to arm timer */
pAdapter->epping_timer_state = EPPING_TX_TIMER_STOPPED;
return;
}
/* try to flush nodrop queue */
while ((nodrop_skb = adf_nbuf_queue_remove(&pAdapter->nodrop_queue))) {
HTCSetNodropPkt(pAdapter->pEpping_ctx->HTCHandle, TRUE);
if (epping_tx_send_int(nodrop_skb, pAdapter)) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: nodrop: %pK xmit fail in timer\n", __func__, nodrop_skb);
/* fail to xmit so put the nodrop packet to the nodrop queue */
adf_nbuf_queue_insert_head(&pAdapter->nodrop_queue, nodrop_skb);
break;
} else {
HTCSetNodropPkt(pAdapter->pEpping_ctx->HTCHandle, FALSE);
EPPING_LOG(VOS_TRACE_LEVEL_INFO,
"%s: nodrop: %pK xmit ok in timer\n", __func__, nodrop_skb);
}
}
/* if nodrop queue is not empty, continue to arm timer */
if (nodrop_skb) {
adf_os_spin_lock_bh(&pAdapter->data_lock);
/* if nodrop queue is not empty, continue to arm timer */
if (pAdapter->epping_timer_state != EPPING_TX_TIMER_RUNNING) {
pAdapter->epping_timer_state = EPPING_TX_TIMER_RUNNING;
adf_os_timer_mod(&pAdapter->epping_timer, TX_RETRY_TIMEOUT_IN_MS);
}
adf_os_spin_unlock_bh(&pAdapter->data_lock);
} else {
pAdapter->epping_timer_state = EPPING_TX_TIMER_STOPPED;
}
}
int epping_tx_send(adf_nbuf_t skb, epping_adapter_t *pAdapter)
{
adf_nbuf_t nodrop_skb;
EPPING_HEADER *eppingHdr;
A_UINT8 ac = 0;
eppingHdr = (EPPING_HEADER *)adf_nbuf_data(skb);
if (!IS_EPPING_PACKET(eppingHdr)) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: Recived non endpoint ping packets\n", __func__);
/* no packet to send, cleanup */
adf_nbuf_free(skb);
return -ENOMEM;
}
/* the stream ID is mapped to an access class */
ac = eppingHdr->StreamNo_h;
/* hard coded two ep ids */
if (ac != 0 && ac != 1) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: ac %d is not mapped to mboxping service\n", __func__, ac);
adf_nbuf_free(skb);
return -ENOMEM;
}
/*
* some EPPING packets cannot be dropped no matter what access class
* it was sent on. A special care has been taken:
* 1. when there is no TX resource, queue the control packets to
* a special queue
* 2. when there is TX resource, send the queued control packets first
* and then other packets
* 3. a timer launches to check if there is queued control packets and
* flush them
*/
/* check the nodrop queue first */
while ((nodrop_skb = adf_nbuf_queue_remove(&pAdapter->nodrop_queue))) {
HTCSetNodropPkt(pAdapter->pEpping_ctx->HTCHandle, TRUE);
if (epping_tx_send_int(nodrop_skb, pAdapter)) {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: nodrop: %pK xmit fail\n", __func__, nodrop_skb);
/* fail to xmit so put the nodrop packet to the nodrop queue */
adf_nbuf_queue_insert_head(&pAdapter->nodrop_queue, nodrop_skb);
/* no cookie so free the current skb */
goto tx_fail;
} else {
HTCSetNodropPkt(pAdapter->pEpping_ctx->HTCHandle, FALSE);
EPPING_LOG(VOS_TRACE_LEVEL_INFO,
"%s: nodrop: %pK xmit ok\n", __func__, nodrop_skb);
}
}
/* send the original packet */
if (epping_tx_send_int(skb, pAdapter))
goto tx_fail;
return 0;
tx_fail:
if (!IS_EPING_PACKET_NO_DROP(eppingHdr)) {
/* allow to drop the skb so drop it */
adf_nbuf_free(skb);
++pAdapter->stats.tx_dropped;
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: Tx skb %pK dropped, stats.tx_dropped = %ld\n",
__func__, skb, pAdapter->stats.tx_dropped);
return -ENOMEM;
} else {
EPPING_LOG(VOS_TRACE_LEVEL_FATAL,
"%s: nodrop: %pK queued\n", __func__, skb);
adf_nbuf_queue_add(&pAdapter->nodrop_queue, skb);
adf_os_spin_lock_bh(&pAdapter->data_lock);
if (pAdapter->epping_timer_state != EPPING_TX_TIMER_RUNNING) {
pAdapter->epping_timer_state = EPPING_TX_TIMER_RUNNING;
adf_os_timer_mod(&pAdapter->epping_timer, TX_RETRY_TIMEOUT_IN_MS);
}
adf_os_spin_unlock_bh(&pAdapter->data_lock);
}
return 0;
}
#ifdef HIF_SDIO
HTC_SEND_FULL_ACTION epping_tx_queue_full(void *Context,
HTC_PACKET *pPacket)
{
/*
* Call netif_stop_queue frequently will impact the mboxping tx t-put.
* Return HTC_SEND_FULL_KEEP directly in epping_tx_queue_full to avoid.
*/
return HTC_SEND_FULL_KEEP;
}
#endif /* HIF_SDIO */
void epping_tx_complete_multiple(void *ctx,
HTC_PACKET_QUEUE *pPacketQueue)
{
epping_context_t *pEpping_ctx = (epping_context_t *)ctx;
epping_adapter_t *pAdapter = pEpping_ctx->epping_adapter;
struct net_device* dev = pAdapter->dev;
A_STATUS status;
HTC_ENDPOINT_ID eid;
adf_nbuf_t pktSkb;
struct epping_cookie *cookie;
A_BOOL flushing = FALSE;
adf_nbuf_queue_t skb_queue;
HTC_PACKET *htc_pkt;
adf_nbuf_queue_init(&skb_queue);
adf_os_spin_lock_bh(&pAdapter->data_lock);
while (!HTC_QUEUE_EMPTY(pPacketQueue)) {
htc_pkt = HTC_PACKET_DEQUEUE(pPacketQueue);
if (htc_pkt == NULL)
break;
status=htc_pkt->Status;
eid=htc_pkt->Endpoint;
pktSkb=GET_HTC_PACKET_NET_BUF_CONTEXT(htc_pkt);
cookie = htc_pkt->pPktContext;
if (!pktSkb) {
EPPING_LOG(VOS_TRACE_LEVEL_ERROR,
"%s: pktSkb is NULL", __func__);
ASSERT(0);
} else {
if (htc_pkt->pBuffer != adf_nbuf_data(pktSkb)) {
EPPING_LOG(VOS_TRACE_LEVEL_ERROR,
"%s: htc_pkt buffer not equal to skb->data", __func__);
ASSERT(0);
}
/* add this to the list, use faster non-lock API */
adf_nbuf_queue_add(&skb_queue,pktSkb);
if (A_SUCCESS(status))
if (htc_pkt->ActualLength != adf_nbuf_len(pktSkb)) {
EPPING_LOG(VOS_TRACE_LEVEL_ERROR,
"%s: htc_pkt length not equal to skb->len", __func__);
ASSERT(0);
}
}
EPPING_LOG(VOS_TRACE_LEVEL_INFO,
"%s skb=%pK data=%pK len=0x%x eid=%d ",
__func__, pktSkb, htc_pkt->pBuffer,
htc_pkt->ActualLength, eid);
if (A_FAILED(status)) {
if (status == A_ECANCELED) {
/* a packet was flushed */
flushing = TRUE;
}
if (status != A_NO_RESOURCE) {
printk("%s() -TX ERROR, status: 0x%x\n", __func__,
status);
}
} else {
EPPING_LOG(VOS_TRACE_LEVEL_INFO, "%s: OK\n", __func__);
flushing = FALSE;
}
epping_free_cookie(pAdapter->pEpping_ctx, cookie);
}
adf_os_spin_unlock_bh(&pAdapter->data_lock);
/* free all skbs in our local list */
while (adf_nbuf_queue_len(&skb_queue)) {
/* use non-lock version */
pktSkb = adf_nbuf_queue_remove(&skb_queue);
if (pktSkb == NULL)
break;
adf_nbuf_tx_free(pktSkb, ADF_NBUF_PKT_ERROR);
pEpping_ctx->total_tx_acks++;
}
if (!flushing) {
netif_wake_queue(dev);
}
}