1*5113495bSYour Name /*
2*5113495bSYour Name * Copyright (c) 2014-2016, 2018-2020 The Linux Foundation. All rights reserved.
3*5113495bSYour Name * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
4*5113495bSYour Name *
5*5113495bSYour Name * Permission to use, copy, modify, and/or distribute this software for
6*5113495bSYour Name * any purpose with or without fee is hereby granted, provided that the
7*5113495bSYour Name * above copyright notice and this permission notice appear in all
8*5113495bSYour Name * copies.
9*5113495bSYour Name *
10*5113495bSYour Name * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11*5113495bSYour Name * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12*5113495bSYour Name * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13*5113495bSYour Name * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14*5113495bSYour Name * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15*5113495bSYour Name * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16*5113495bSYour Name * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17*5113495bSYour Name * PERFORMANCE OF THIS SOFTWARE.
18*5113495bSYour Name */
19*5113495bSYour Name
20*5113495bSYour Name /**
21*5113495bSYour Name * DOC: cds_packet.c
22*5113495bSYour Name * Connectivity driver services (CDS) network Packet APIs
23*5113495bSYour Name * Network Protocol packet/buffer support interfaces
24*5113495bSYour Name */
25*5113495bSYour Name
26*5113495bSYour Name #include <cds_packet.h>
27*5113495bSYour Name #include <i_cds_packet.h>
28*5113495bSYour Name #include <qdf_mc_timer.h>
29*5113495bSYour Name #include <qdf_trace.h>
30*5113495bSYour Name #include <wlan_hdd_main.h>
31*5113495bSYour Name #include "qdf_nbuf.h"
32*5113495bSYour Name #include "qdf_mem.h"
33*5113495bSYour Name #include "cds_utils.h"
34*5113495bSYour Name
35*5113495bSYour Name #define TX_PKT_MIN_HEADROOM (64)
36*5113495bSYour Name
cds_pkt_return_packet(cds_pkt_t * packet)37*5113495bSYour Name QDF_STATUS cds_pkt_return_packet(cds_pkt_t *packet)
38*5113495bSYour Name {
39*5113495bSYour Name /* Validate the input parameter pointer */
40*5113495bSYour Name if (unlikely(!packet)) {
41*5113495bSYour Name return QDF_STATUS_E_INVAL;
42*5113495bSYour Name }
43*5113495bSYour Name
44*5113495bSYour Name /* Free up the qdf nbuf */
45*5113495bSYour Name qdf_nbuf_free(packet->pkt_buf);
46*5113495bSYour Name
47*5113495bSYour Name packet->pkt_buf = NULL;
48*5113495bSYour Name
49*5113495bSYour Name /* Free up the Rx packet */
50*5113495bSYour Name qdf_mem_free(packet);
51*5113495bSYour Name
52*5113495bSYour Name return QDF_STATUS_SUCCESS;
53*5113495bSYour Name }
54*5113495bSYour Name
55*5113495bSYour Name QDF_STATUS
cds_pkt_get_packet_length(cds_pkt_t * pPacket,uint16_t * pPacketSize)56*5113495bSYour Name cds_pkt_get_packet_length(cds_pkt_t *pPacket, uint16_t *pPacketSize)
57*5113495bSYour Name {
58*5113495bSYour Name /* Validate the parameter pointers */
59*5113495bSYour Name if (unlikely((!pPacket) || (!pPacketSize)) ||
60*5113495bSYour Name (!pPacket->pkt_buf)) {
61*5113495bSYour Name cds_alert("NULL pointer");
62*5113495bSYour Name return QDF_STATUS_E_INVAL;
63*5113495bSYour Name }
64*5113495bSYour Name /* return the requested information */
65*5113495bSYour Name *pPacketSize = qdf_nbuf_len(pPacket->pkt_buf);
66*5113495bSYour Name return QDF_STATUS_SUCCESS;
67*5113495bSYour Name }
68*5113495bSYour Name
69*5113495bSYour Name #ifdef MEMORY_DEBUG
cds_packet_alloc_debug(uint16_t size,void ** data,void ** ppPacket,const char * func_name,uint32_t line_num)70*5113495bSYour Name QDF_STATUS cds_packet_alloc_debug(uint16_t size, void **data, void **ppPacket,
71*5113495bSYour Name const char *func_name, uint32_t line_num)
72*5113495bSYour Name {
73*5113495bSYour Name QDF_STATUS qdf_ret_status = QDF_STATUS_E_FAILURE;
74*5113495bSYour Name qdf_nbuf_t nbuf;
75*5113495bSYour Name
76*5113495bSYour Name nbuf = qdf_nbuf_alloc_debug(NULL,
77*5113495bSYour Name roundup(size + TX_PKT_MIN_HEADROOM, 4),
78*5113495bSYour Name TX_PKT_MIN_HEADROOM, sizeof(uint32_t), false,
79*5113495bSYour Name func_name, line_num);
80*5113495bSYour Name
81*5113495bSYour Name if (nbuf) {
82*5113495bSYour Name qdf_nbuf_put_tail(nbuf, size);
83*5113495bSYour Name qdf_nbuf_set_protocol(nbuf, ETH_P_CONTROL);
84*5113495bSYour Name *ppPacket = nbuf;
85*5113495bSYour Name *data = qdf_nbuf_data(nbuf);
86*5113495bSYour Name qdf_ret_status = QDF_STATUS_SUCCESS;
87*5113495bSYour Name }
88*5113495bSYour Name
89*5113495bSYour Name return qdf_ret_status;
90*5113495bSYour Name }
91*5113495bSYour Name #else
cds_packet_alloc(uint16_t size,void ** data,void ** ppPacket)92*5113495bSYour Name QDF_STATUS cds_packet_alloc(uint16_t size, void **data, void **ppPacket)
93*5113495bSYour Name {
94*5113495bSYour Name QDF_STATUS qdf_ret_status = QDF_STATUS_E_FAILURE;
95*5113495bSYour Name qdf_nbuf_t nbuf;
96*5113495bSYour Name
97*5113495bSYour Name nbuf = qdf_nbuf_alloc(NULL, roundup(size + TX_PKT_MIN_HEADROOM, 4),
98*5113495bSYour Name TX_PKT_MIN_HEADROOM, sizeof(uint32_t), false);
99*5113495bSYour Name
100*5113495bSYour Name if (nbuf) {
101*5113495bSYour Name qdf_nbuf_put_tail(nbuf, size);
102*5113495bSYour Name qdf_nbuf_set_protocol(nbuf, ETH_P_CONTROL);
103*5113495bSYour Name *ppPacket = nbuf;
104*5113495bSYour Name *data = qdf_nbuf_data(nbuf);
105*5113495bSYour Name qdf_ret_status = QDF_STATUS_SUCCESS;
106*5113495bSYour Name }
107*5113495bSYour Name
108*5113495bSYour Name return qdf_ret_status;
109*5113495bSYour Name }
110*5113495bSYour Name
111*5113495bSYour Name #endif
112*5113495bSYour Name
cds_packet_free(void * pPacket)113*5113495bSYour Name void cds_packet_free(void *pPacket)
114*5113495bSYour Name {
115*5113495bSYour Name qdf_nbuf_free((qdf_nbuf_t) pPacket);
116*5113495bSYour Name }
117