1 /** @file mlan_txrx.c
2 *
3 * @brief This file provides the handling of TX/RX in MLAN
4 *
5 * Copyright 2008-2024 NXP
6 *
7 * SPDX-License-Identifier: BSD-3-Clause
8 *
9 */
10
11 /*************************************************************
12 Change Log:
13 05/11/2009: initial version
14 ************************************************************/
15 #include <mlan_api.h>
16
17 /* Additional WMSDK header files */
18 #include <wmerrno.h>
19 #include <osa.h>
20 #if CONFIG_WIFI_PKT_FWD
21 #include <wm_net.h>
22 #if defined(RW610)
23 #include "wifi-imu.h"
24 #else
25 #include "wifi-sdio.h"
26 #endif
27 #endif
28 /* Always keep this include at the end of all include files */
29 #include <mlan_remap_mem_operations.h>
30 /********************************************************
31 Local Variables
32 ********************************************************/
33
34 /********************************************************
35 Global Variables
36 ********************************************************/
37
38 /********************************************************
39 Local Functions
40 ********************************************************/
41
42 /********************************************************
43 Global Functions
44 ********************************************************/
45 /**
46 * @brief This function processes the received buffer
47 *
48 * @param pmadapter A pointer to mlan_adapter
49 * @param pmbuf A pointer to the received buffer
50 *
51 * @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
52 */
wlan_handle_rx_packet(pmlan_adapter pmadapter,pmlan_buffer pmbuf)53 mlan_status wlan_handle_rx_packet(pmlan_adapter pmadapter, pmlan_buffer pmbuf)
54 {
55 mlan_status ret = MLAN_STATUS_SUCCESS;
56 pmlan_private priv = wlan_get_priv(pmadapter, MLAN_BSS_ROLE_ANY);
57 RxPD *prx_pd;
58 #ifdef DEBUG_LEVEL1
59 t_u32 sec, usec;
60 #endif
61
62 ENTER();
63
64 prx_pd = (RxPD *)(void *)(pmbuf->pbuf + pmbuf->data_offset);
65 /* Get the BSS number from RxPD, get corresponding priv */
66 priv = wlan_get_priv_by_id(pmadapter, prx_pd->bss_num & BSS_NUM_MASK, prx_pd->bss_type);
67 if (priv == MNULL)
68 {
69 priv = wlan_get_priv(pmadapter, MLAN_BSS_ROLE_ANY);
70 }
71 pmbuf->bss_index = priv->bss_index;
72 PRINTM_GET_SYS_TIME(MDATA, &sec, &usec);
73 PRINTM_NETINTF(MDATA, priv);
74 /* PRINTM(MDATA, "%lu.%06lu : Data <= FW\n", sec, usec); */
75 ret = priv->ops.process_rx_packet(pmadapter, pmbuf);
76
77 LEAVE();
78 return ret;
79 }
80
81 #if CONFIG_WIFI_PKT_FWD
82 /**
83 * @brief This function processes received packet and forwards it
84 * to kernel/upper layer or send back to firmware
85 *
86 * @param priv A pointer to mlan_private
87 * @param pmbuf A pointer to mlan_buffer which includes the received packet
88 *
89 * @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
90 */
wlan_process_uap_rx_packet(mlan_private * priv,pmlan_buffer pmbuf)91 mlan_status wlan_process_uap_rx_packet(mlan_private *priv, pmlan_buffer pmbuf)
92 {
93 mlan_status ret = MLAN_STATUS_SUCCESS;
94 pmlan_adapter pmadapter = priv->adapter;
95 RxPacketHdr_t *prx_pkt = (RxPacketHdr_t *)pmbuf->pdesc;
96 RxPD *prx_pd = (RxPD *)(void *)(pmbuf->pbuf + pmbuf->data_offset);
97
98 /* Don't do packet forwarding in disconnected state */
99 if (priv->media_connected == MFALSE)
100 goto upload;
101
102 if (prx_pkt->eth803_hdr.dest_addr[0] & 0x01)
103 {
104 /* Allocate new buffer here, to avoid the conflict between
105 * driver handling and TCP/IP stack handling */
106 void *pkt = (void *)gen_tx_pkt_from_data(priv->bss_type,
107 net_stack_buffer_get_payload(pmbuf->lwip_pbuf), prx_pd->rx_pkt_length);
108 if (pkt == NULL)
109 {
110 /* Allocate TX buffer failed, directly upload the packet to TCP/IP stack */
111 goto upload;
112 }
113
114 net_wifi_packet_send(WLAN_BSS_TYPE_UAP, pkt);
115 net_stack_buffer_free(pkt);
116 }
117 else
118 {
119 if (wlan_11n_get_txbastream_tbl(priv, prx_pkt->eth803_hdr.dest_addr))
120 {
121 int iret = net_wifi_packet_send(WLAN_BSS_TYPE_UAP, pmbuf->lwip_pbuf);
122 if (iret != WM_SUCCESS)
123 {
124 ret = MLAN_STATUS_FAILURE;
125 }
126 net_stack_buffer_free(pmbuf->lwip_pbuf);
127 #if !(CONFIG_TX_RX_ZERO_COPY) && !(FSL_USDHC_ENABLE_SCATTER_GATHER_TRANSFER)
128 #if !CONFIG_MEM_POOLS
129 /* Free RxPD */
130 OSA_MemoryFree(pmbuf->pbuf);
131 OSA_MemoryFree(pmbuf);
132 #else
133 OSA_MemoryPoolFree(buf_128_MemoryPool, pmbuf->pbuf);
134 OSA_MemoryPoolFree(buf_128_MemoryPool, pmbuf);
135 #endif
136 #endif
137 return ret;
138 }
139 }
140
141 upload:
142 ret = pmadapter->callbacks.moal_recv_packet(pmadapter->pmoal_handle, pmbuf);
143 if (ret == MLAN_STATUS_FAILURE)
144 {
145 pmbuf->status_code = (t_u32)MLAN_ERROR_PKT_INVALID;
146 PRINTM(MERROR, "uAP Rx Error: moal_recv_packet returned error\n");
147 }
148
149 if (ret != MLAN_STATUS_PENDING)
150 {
151 wlan_free_mlan_buffer(pmadapter, pmbuf);
152 }
153
154 LEAVE();
155 return ret;
156 }
157 #endif
158
