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android_kernel_samsung_sm86…/dp/wifi3.0/dp_txrx_me.c
Pranita Solanke 4c04bc9724 qca-wifi: Move ME feature to component dev 
We are moving multicast enhancement feature out of common code.
As part of this change move the APIs to component dev.

Change-Id: I2e6cecdf7a690416544825e8c51e04c4484ddde0
2019-06-05 08:07:46 -07:00

427 regels
12 KiB
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/*
* Copyright (c) 2016-2019 The Linux Foundation. All rights reserved.
*
* 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.
*/
#include "hal_hw_headers.h"
#include "dp_types.h"
#include "qdf_nbuf.h"
#include "qdf_atomic.h"
#include "qdf_types.h"
#include "dp_tx.h"
#include "dp_tx_desc.h"
#include "dp_internal.h"
#include "dp_txrx_me.h"
#define MAX_ME_BUF_CHUNK 1424
#define ME_US_TO_SEC(_x) ((_x) / (1000 * 1000))
#define ME_CLEAN_WAIT_TIMEOUT (200000) /*200ms*/
#define ME_CLEAN_WAIT_COUNT 400
/**
* dp_tx_me_init():Initialize ME buffer ppol
* @pdev: DP PDEV handle
*
* Return:0 on Succes 1 on failure
*/
static inline uint16_t
dp_tx_me_init(struct dp_pdev *pdev)
{
uint16_t i, mc_uc_buf_len, num_pool_elems;
uint32_t pool_size;
struct dp_tx_me_buf_t *p;
mc_uc_buf_len = sizeof(struct dp_tx_me_buf_t);
num_pool_elems = MAX_ME_BUF_CHUNK;
/* Add flow control buffer count */
pool_size = (mc_uc_buf_len) * num_pool_elems;
pdev->me_buf.size = mc_uc_buf_len;
if (!(pdev->me_buf.vaddr)) {
qdf_spin_lock_bh(&pdev->tx_mutex);
pdev->me_buf.vaddr = qdf_mem_malloc(pool_size);
if (!(pdev->me_buf.vaddr)) {
qdf_spin_unlock_bh(&pdev->tx_mutex);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"Error allocating memory pool");
return 1;
}
pdev->me_buf.buf_in_use = 0;
pdev->me_buf.freelist =
(struct dp_tx_me_buf_t *)pdev->me_buf.vaddr;
/*
* me_buf looks like this
* |=======+==========================|
* | ptr | Dst MAC |
* |=======+==========================|
*/
p = pdev->me_buf.freelist;
for (i = 0; i < num_pool_elems - 1; i++) {
p->next = (struct dp_tx_me_buf_t *)
((char *)p + pdev->me_buf.size);
p = p->next;
}
p->next = NULL;
qdf_spin_unlock_bh(&pdev->tx_mutex);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"ME Pool successfully initialized vaddr - %x",
pdev->me_buf.vaddr);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"paddr - %x\n", (unsigned int)pdev->me_buf.paddr);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"num_elems = %d", (unsigned int)num_pool_elems);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"buf_size - %d", (unsigned int)pdev->me_buf.size);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"pool_size = %d", (unsigned int)pool_size);
} else {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"ME Already Enabled!!");
}
return 0;
}
/**
* dp_tx_me_alloc_descriptor():Allocate ME descriptor
* @pdev_handle: DP PDEV handle
*
* Return:void
*/
void
dp_tx_me_alloc_descriptor(struct cdp_pdev *pdev_handle)
{
struct dp_pdev *pdev = (struct dp_pdev *)pdev_handle;
if (qdf_atomic_read(&pdev->mc_num_vap_attached) == 0) {
dp_tx_me_init(pdev);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
FL("Enable MCAST_TO_UCAST "));
}
qdf_atomic_inc(&pdev->mc_num_vap_attached);
}
/**
* dp_tx_me_exit():Free memory and other cleanup required for
* multicast unicast conversion
* @pdev - DP_PDEV handle
*
* Return:void
*/
void
dp_tx_me_exit(struct dp_pdev *pdev)
{
/* Add flow control buffer count */
uint32_t wait_time = ME_US_TO_SEC(ME_CLEAN_WAIT_TIMEOUT *
ME_CLEAN_WAIT_COUNT);
if (pdev->me_buf.vaddr) {
uint16_t wait_cnt = 0;
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"Disabling Mcastenhance,This may take some time");
qdf_spin_lock_bh(&pdev->tx_mutex);
while ((pdev->me_buf.buf_in_use > 0) &&
(wait_cnt < ME_CLEAN_WAIT_COUNT)) {
qdf_spin_unlock_bh(&pdev->tx_mutex);
OS_SLEEP(ME_CLEAN_WAIT_TIMEOUT);
wait_cnt++;
qdf_spin_lock_bh(&pdev->tx_mutex);
}
if (pdev->me_buf.buf_in_use > 0) {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,
"Tx-comp pending for %d",
pdev->me_buf.buf_in_use);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_FATAL,
"ME frames after waiting %ds!!",
wait_time);
qdf_assert_always(0);
}
qdf_mem_free(pdev->me_buf.vaddr);
pdev->me_buf.vaddr = NULL;
pdev->me_buf.freelist = NULL;
qdf_spin_unlock_bh(&pdev->tx_mutex);
} else {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"ME Already Disabled !!!");
}
}
/**
* dp_tx_me_free_descriptor():free ME descriptor
* @pdev_handle:DP_PDEV handle
*
* Return:void
*/
void
dp_tx_me_free_descriptor(struct cdp_pdev *pdev_handle)
{
struct dp_pdev *pdev = (struct dp_pdev *)pdev_handle;
qdf_atomic_dec(&pdev->mc_num_vap_attached);
if (atomic_read(&pdev->mc_num_vap_attached) == 0) {
dp_tx_me_exit(pdev);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"Disable MCAST_TO_UCAST");
}
}
/**
* dp_tx_prepare_send_me(): Call to the umac to get the list of clients
* @vdev: DP VDEV handle
* @nbuf: Multicast buffer
*
* Return: no of packets transmitted
*/
QDF_STATUS
dp_tx_prepare_send_me(struct dp_vdev *vdev, qdf_nbuf_t nbuf)
{
if (vdev->me_convert) {
if (vdev->me_convert(vdev->osif_vdev, nbuf) > 0)
return QDF_STATUS_SUCCESS;
}
return QDF_STATUS_E_FAILURE;
}
/*
* dp_tx_me_mem_free(): Function to free allocated memory in mcast enahncement
* pdev: pointer to DP PDEV structure
* seg_info_head: Pointer to the head of list
*
* return: void
*/
static void dp_tx_me_mem_free(struct dp_pdev *pdev,
struct dp_tx_seg_info_s *seg_info_head)
{
struct dp_tx_me_buf_t *mc_uc_buf;
struct dp_tx_seg_info_s *seg_info_new = NULL;
qdf_nbuf_t nbuf = NULL;
uint64_t phy_addr;
while (seg_info_head) {
nbuf = seg_info_head->nbuf;
mc_uc_buf = (struct dp_tx_me_buf_t *)
seg_info_head->frags[0].vaddr;
phy_addr = seg_info_head->frags[0].paddr_hi;
phy_addr = (phy_addr << 32) | seg_info_head->frags[0].paddr_lo;
qdf_mem_unmap_nbytes_single(pdev->soc->osdev,
phy_addr,
QDF_DMA_TO_DEVICE, QDF_MAC_ADDR_SIZE);
dp_tx_me_free_buf(pdev, mc_uc_buf);
qdf_nbuf_free(nbuf);
seg_info_new = seg_info_head;
seg_info_head = seg_info_head->next;
qdf_mem_free(seg_info_new);
}
}
/**
* dp_tx_me_send_convert_ucast(): function to convert multicast to unicast
* @vdev: DP VDEV handle
* @nbuf: Multicast nbuf
* @newmac: Table of the clients to which packets have to be sent
* @new_mac_cnt: No of clients
*
* return: no of converted packets
*/
uint16_t
dp_tx_me_send_convert_ucast(struct cdp_vdev *vdev_handle, qdf_nbuf_t nbuf,
uint8_t newmac[][QDF_MAC_ADDR_SIZE], uint8_t new_mac_cnt)
{
struct dp_vdev *vdev = (struct dp_vdev *) vdev_handle;
struct dp_pdev *pdev = vdev->pdev;
qdf_ether_header_t *eh;
uint8_t *data;
uint16_t len;
/* reference to frame dst addr */
uint8_t *dstmac;
/* copy of original frame src addr */
uint8_t srcmac[QDF_MAC_ADDR_SIZE];
/* local index into newmac */
uint8_t new_mac_idx = 0;
struct dp_tx_me_buf_t *mc_uc_buf;
qdf_nbuf_t nbuf_clone;
struct dp_tx_msdu_info_s msdu_info;
struct dp_tx_seg_info_s *seg_info_head = NULL;
struct dp_tx_seg_info_s *seg_info_tail = NULL;
struct dp_tx_seg_info_s *seg_info_new;
qdf_dma_addr_t paddr_data;
qdf_dma_addr_t paddr_mcbuf = 0;
uint8_t empty_entry_mac[QDF_MAC_ADDR_SIZE] = {0};
QDF_STATUS status;
qdf_mem_zero(&msdu_info, sizeof(msdu_info));
dp_tx_get_queue(vdev, nbuf, &msdu_info.tx_queue);
eh = (qdf_ether_header_t *)nbuf;
qdf_mem_copy(srcmac, eh->ether_shost, QDF_MAC_ADDR_SIZE);
len = qdf_nbuf_len(nbuf);
data = qdf_nbuf_data(nbuf);
status = qdf_nbuf_map(vdev->osdev, nbuf,
QDF_DMA_TO_DEVICE);
if (status) {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"Mapping failure Error:%d", status);
DP_STATS_INC(vdev, tx_i.mcast_en.dropped_map_error, 1);
qdf_nbuf_free(nbuf);
return 1;
}
paddr_data = qdf_nbuf_mapped_paddr_get(nbuf) + QDF_MAC_ADDR_SIZE;
for (new_mac_idx = 0; new_mac_idx < new_mac_cnt; new_mac_idx++) {
dstmac = newmac[new_mac_idx];
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
"added mac addr (%pM)", dstmac);
/* Check for NULL Mac Address */
if (!qdf_mem_cmp(dstmac, empty_entry_mac, QDF_MAC_ADDR_SIZE))
continue;
/* frame to self mac. skip */
if (!qdf_mem_cmp(dstmac, srcmac, QDF_MAC_ADDR_SIZE))
continue;
/*
* optimize to avoid malloc in per-packet path
* For eg. seg_pool can be made part of vdev structure
*/
seg_info_new = qdf_mem_malloc(sizeof(*seg_info_new));
if (!seg_info_new) {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"alloc failed");
DP_STATS_INC(vdev, tx_i.mcast_en.fail_seg_alloc, 1);
goto fail_seg_alloc;
}
mc_uc_buf = dp_tx_me_alloc_buf(pdev);
if (!mc_uc_buf)
goto fail_buf_alloc;
/*
* Check if we need to clone the nbuf
* Or can we just use the reference for all cases
*/
if (new_mac_idx < (new_mac_cnt - 1)) {
nbuf_clone = qdf_nbuf_clone((qdf_nbuf_t)nbuf);
if (!nbuf_clone) {
DP_STATS_INC(vdev, tx_i.mcast_en.clone_fail, 1);
goto fail_clone;
}
} else {
/*
* Update the ref
* to account for frame sent without cloning
*/
qdf_nbuf_ref(nbuf);
nbuf_clone = nbuf;
}
qdf_mem_copy(mc_uc_buf->data, dstmac, QDF_MAC_ADDR_SIZE);
status = qdf_mem_map_nbytes_single(vdev->osdev, mc_uc_buf->data,
QDF_DMA_TO_DEVICE, QDF_MAC_ADDR_SIZE,
&paddr_mcbuf);
if (status) {
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,
"Mapping failure Error:%d", status);
DP_STATS_INC(vdev, tx_i.mcast_en.dropped_map_error, 1);
goto fail_map;
}
seg_info_new->frags[0].vaddr = (uint8_t *)mc_uc_buf;
seg_info_new->frags[0].paddr_lo = (uint32_t) paddr_mcbuf;
seg_info_new->frags[0].paddr_hi =
(uint16_t)((uint64_t)paddr_mcbuf >> 32);
seg_info_new->frags[0].len = QDF_MAC_ADDR_SIZE;
/*preparing data fragment*/
seg_info_new->frags[1].vaddr =
qdf_nbuf_data(nbuf) + QDF_MAC_ADDR_SIZE;
seg_info_new->frags[1].paddr_lo = (uint32_t)paddr_data;
seg_info_new->frags[1].paddr_hi =
(uint16_t)(((uint64_t)paddr_data) >> 32);
seg_info_new->frags[1].len = len - QDF_MAC_ADDR_SIZE;
seg_info_new->nbuf = nbuf_clone;
seg_info_new->frag_cnt = 2;
seg_info_new->total_len = len;
seg_info_new->next = NULL;
if (!seg_info_head)
seg_info_head = seg_info_new;
else
seg_info_tail->next = seg_info_new;
seg_info_tail = seg_info_new;
}
if (!seg_info_head) {
goto free_return;
}
msdu_info.u.sg_info.curr_seg = seg_info_head;
msdu_info.num_seg = new_mac_cnt;
msdu_info.frm_type = dp_tx_frm_me;
msdu_info.tid = HTT_INVALID_TID;
if (qdf_unlikely(vdev->mcast_enhancement_en > 0) &&
qdf_unlikely(pdev->hmmc_tid_override_en))
msdu_info.tid = pdev->hmmc_tid;
DP_STATS_INC(vdev, tx_i.mcast_en.ucast, new_mac_cnt);
dp_tx_send_msdu_multiple(vdev, nbuf, &msdu_info);
while (seg_info_head->next) {
seg_info_new = seg_info_head;
seg_info_head = seg_info_head->next;
qdf_mem_free(seg_info_new);
}
qdf_mem_free(seg_info_head);
qdf_nbuf_unmap(pdev->soc->osdev, nbuf, QDF_DMA_TO_DEVICE);
qdf_nbuf_free(nbuf);
return new_mac_cnt;
fail_map:
qdf_nbuf_free(nbuf_clone);
fail_clone:
dp_tx_me_free_buf(pdev, mc_uc_buf);
fail_buf_alloc:
qdf_mem_free(seg_info_new);
fail_seg_alloc:
dp_tx_me_mem_free(pdev, seg_info_head);
free_return:
qdf_nbuf_unmap(pdev->soc->osdev, nbuf, QDF_DMA_TO_DEVICE);
qdf_nbuf_free(nbuf);
return 1;
}
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