a4cd297f84
Free list created from ME buf pool expects next pointer to be first element in the me buf. Change me buf structure to keep next pointer as the first element. Also, Fix offsets in ME free list creation. Change-Id: I2dffd0c04ba8514d0d1a5f5e6b14380902d1ec06 CRs-Fixed: 2077675
192 lines
5.2 KiB
C
192 lines
5.2 KiB
C
/*
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* Copyright (c) 2017 The Linux Foundation. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for
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* any purpose with or without fee is hereby granted, provided that the
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* above copyright notice and this permission notice appear in all
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* copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "dp_types.h"
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#include "qdf_nbuf.h"
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#include "qdf_atomic.h"
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#include "qdf_types.h"
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#include "dp_tx.h"
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#include "dp_tx_desc.h"
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#include "dp_internal.h"
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#ifdef ATH_SUPPORT_IQUE
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#define MAX_ME_BUF_CHUNK 1424
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#define ME_US_TO_SEC(_x) ((_x)/(1000 * 1000))
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#define ME_CLEAN_WAIT_TIMEOUT (200000) /*200ms*/
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#define ME_CLEAN_WAIT_COUNT 400
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/**
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* dp_tx_me_init():Initialize ME buffer ppol
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* @pdev: DP PDEV handle
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*
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* Return:0 on Succes 1 on failure
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*/
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static inline uint16_t
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dp_tx_me_init(struct dp_pdev *pdev)
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{
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uint16_t i, mc_uc_buf_len, num_pool_elems;
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uint32_t pool_size;
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struct dp_tx_me_buf_t *p;
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mc_uc_buf_len = sizeof(struct dp_tx_me_buf_t);
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num_pool_elems = MAX_ME_BUF_CHUNK;
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/* Add flow control buffer count */
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pool_size = (mc_uc_buf_len) * num_pool_elems;
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pdev->me_buf.size = mc_uc_buf_len;
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if (pdev->me_buf.vaddr == NULL) {
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qdf_spin_lock_bh(&pdev->tx_mutex);
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pdev->me_buf.vaddr = qdf_mem_malloc(pool_size);
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if (pdev->me_buf.vaddr == NULL) {
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qdf_spin_unlock_bh(&pdev->tx_mutex);
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
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"Error allocating memory pool");
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return 1;
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}
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pdev->me_buf.buf_in_use = 0;
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pdev->me_buf.freelist =
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(struct dp_tx_me_buf_t *) pdev->me_buf.vaddr;
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/*
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* me_buf looks like this
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* |=======+==========================|
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* | ptr | Dst MAC |
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* |=======+==========================|
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*/
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p = pdev->me_buf.freelist;
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for (i = 0; i < num_pool_elems-1; i++) {
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p->next = (struct dp_tx_me_buf_t *)
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((char *)p + pdev->me_buf.size);
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p = p->next;
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}
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p->next = NULL;
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qdf_spin_unlock_bh(&pdev->tx_mutex);
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
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"ME Pool succesfully initialized vaddr - %x \
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paddr - %x\n num_elems = %d buf_size - %d"
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"pool_size = %d",
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pdev->me_buf.vaddr,
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(unsigned int)pdev->me_buf.paddr,
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(unsigned int)num_pool_elems,
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(unsigned int)pdev->me_buf.size,
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(unsigned int)pool_size);
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} else {
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
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"ME Already Enabled!!");
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}
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return 0;
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}
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/**
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* dp_tx_me_alloc_descriptor():Allocate ME descriptor
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* @pdev_handle: DP PDEV handle
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*
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* Return:void
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*/
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void
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dp_tx_me_alloc_descriptor(struct cdp_pdev *pdev_handle)
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{
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struct dp_pdev *pdev = (struct dp_pdev *) pdev_handle;
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if (qdf_atomic_read(&pdev->mc_num_vap_attached) == 0) {
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dp_tx_me_init(pdev);
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
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FL("Enable MCAST_TO_UCAST "));
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}
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qdf_atomic_inc(&pdev->mc_num_vap_attached);
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}
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/**
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* dp_tx_me_exit():Free memory and other cleanup required for
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* multicast unicast conversion
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* @pdev - DP_PDEV handle
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*
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* Return:void
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*/
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static inline void
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dp_tx_me_exit(struct dp_pdev *pdev)
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{
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/* Add flow control buffer count */
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uint32_t wait_time = ME_US_TO_SEC(ME_CLEAN_WAIT_TIMEOUT *
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ME_CLEAN_WAIT_COUNT);
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if (pdev->me_buf.vaddr) {
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uint16_t wait_cnt = 0;
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
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"Disabling Mcastenhance"
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"This may take some time");
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qdf_spin_lock_bh(&pdev->tx_mutex);
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while ((pdev->me_buf.buf_in_use > 0) &&
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(wait_cnt < ME_CLEAN_WAIT_COUNT)) {
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qdf_spin_unlock_bh(&pdev->tx_mutex);
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OS_SLEEP(ME_CLEAN_WAIT_TIMEOUT);
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wait_cnt++;
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qdf_spin_lock_bh(&pdev->tx_mutex);
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}
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if (pdev->me_buf.buf_in_use > 0) {
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
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"Tx-comp pending for %d "
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"ME frames after waiting %ds!!\n",
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pdev->me_buf.buf_in_use, wait_time);
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qdf_assert_always(0);
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}
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qdf_mem_free(pdev->me_buf.vaddr);
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pdev->me_buf.vaddr = NULL;
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pdev->me_buf.freelist = NULL;
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qdf_spin_unlock_bh(&pdev->tx_mutex);
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} else {
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
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"ME Already Disabled !!!");
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}
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}
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/**
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* dp_tx_me_free_descriptor():free ME descriptor
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* @pdev_handle:DP_PDEV handle
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*
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* Return:void
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*/
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void
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dp_tx_me_free_descriptor(struct cdp_pdev *pdev_handle)
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{
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struct dp_pdev *pdev = (struct dp_pdev *) pdev_handle;
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qdf_atomic_dec(&pdev->mc_num_vap_attached);
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if (atomic_read(&pdev->mc_num_vap_attached) == 0) {
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dp_tx_me_exit(pdev);
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO,
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"Disable MCAST_TO_UCAST");
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}
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}
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/**
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* dp_tx_prepare_send_me(): Call to the umac to get the list of clients
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* @vdev: DP VDEV handle
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* @nbuf: Multicast buffer
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*
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* Return: no of packets transmitted
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*/
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int32_t
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dp_tx_prepare_send_me(struct dp_vdev *vdev, qdf_nbuf_t nbuf)
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{
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if (vdev->me_convert)
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return vdev->me_convert(vdev->osif_vdev, nbuf);
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return 0;
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}
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#endif
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