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1 | #include <stdint.h> |
2 | #include <fcntl.h> | |
3 | #include <sys/socket.h> | |
4 | #include <netlink/genl/genl.h> | |
5 | #include <netlink/genl/family.h> | |
6 | #include <netlink/genl/ctrl.h> | |
7 | #include <linux/rtnetlink.h> | |
8 | #include <netpacket/packet.h> | |
9 | #include <linux/filter.h> | |
10 | #include <linux/errqueue.h> | |
11 | ||
12 | #include <linux/pkt_sched.h> | |
13 | #include <netlink/object-api.h> | |
14 | #include <netlink/netlink.h> | |
15 | #include <netlink/socket.h> | |
16 | #include <netlink-types.h> | |
17 | ||
18 | #include "nl80211_copy.h" | |
19 | #include "sync.h" | |
20 | ||
21 | #define LOG_TAG "WifiHAL" | |
22 | ||
23 | #include <utils/Log.h> | |
24 | ||
25 | #include "wifi_hal.h" | |
26 | #include "common.h" | |
27 | #include "cpp_bindings.h" | |
28 | ||
29 | #ifndef SLSI_WLAN_UNIT_TEST | |
30 | using namespace android; | |
31 | #endif | |
32 | ||
33 | typedef enum { | |
34 | MKEEP_ALIVE_ATTRIBUTE_ID, | |
35 | MKEEP_ALIVE_ATTRIBUTE_IP_PKT, | |
36 | MKEEP_ALIVE_ATTRIBUTE_IP_PKT_LEN, | |
37 | MKEEP_ALIVE_ATTRIBUTE_SRC_MAC_ADDR, | |
38 | MKEEP_ALIVE_ATTRIBUTE_DST_MAC_ADDR, | |
39 | MKEEP_ALIVE_ATTRIBUTE_PERIOD_MSEC | |
40 | } WIFI_MKEEP_ALIVE_ATTRIBUTE; | |
41 | ||
42 | typedef enum { | |
43 | START_MKEEP_ALIVE, | |
44 | STOP_MKEEP_ALIVE, | |
45 | } GetCmdType; | |
46 | ||
47 | /////////////////////////////////////////////////////////////////////////////// | |
48 | class MKeepAliveCommand : public WifiCommand | |
49 | { | |
50 | u8 mIndex; | |
51 | u8 *mIpPkt; | |
52 | u16 mIpPktLen; | |
53 | u8 *mSrcMacAddr; | |
54 | u8 *mDstMacAddr; | |
55 | u32 mPeriodMsec; | |
56 | GetCmdType mType; | |
57 | ||
58 | public: | |
59 | ||
60 | // constructor for start sending | |
61 | MKeepAliveCommand(wifi_interface_handle iface, u8 index, u8 *ip_packet, u16 ip_packet_len, | |
62 | u8 *src_mac_addr, u8 *dst_mac_addr, u32 period_msec, GetCmdType cmdType) | |
63 | : WifiCommand(iface, 0), mIndex(index), mIpPkt(ip_packet), | |
64 | mIpPktLen(ip_packet_len), mSrcMacAddr(src_mac_addr), mDstMacAddr(dst_mac_addr), | |
65 | mPeriodMsec(period_msec), mType(cmdType) | |
66 | { } | |
67 | ||
68 | // constructor for stop sending | |
69 | MKeepAliveCommand(wifi_interface_handle iface, u8 index, GetCmdType cmdType) | |
70 | : WifiCommand(iface, 0), mIndex(index), mType(cmdType) | |
71 | { } | |
72 | ||
73 | int createRequest(WifiRequest &request) { | |
74 | int result; | |
75 | ||
76 | switch (mType) { | |
77 | case START_MKEEP_ALIVE: | |
78 | { | |
79 | result = request.create(GOOGLE_OUI, SLSI_NL80211_VENDOR_SUBCMD_START_KEEP_ALIVE_OFFLOAD); | |
80 | if (result != WIFI_SUCCESS) { | |
81 | ALOGE("Failed to create start keep alive request; result = %d", result); | |
82 | return result; | |
83 | } | |
84 | ||
85 | nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA); | |
86 | ||
87 | result = request.put_u8(MKEEP_ALIVE_ATTRIBUTE_ID, mIndex); | |
88 | if (result < 0) { | |
89 | ALOGE("Failed to put id request; result = %d", result); | |
90 | return result; | |
91 | } | |
92 | ||
93 | result = request.put_u16(MKEEP_ALIVE_ATTRIBUTE_IP_PKT_LEN, mIpPktLen); | |
94 | if (result < 0) { | |
95 | ALOGE("Failed to put ip pkt len request; result = %d", result); | |
96 | return result; | |
97 | } | |
98 | ||
99 | result = request.put(MKEEP_ALIVE_ATTRIBUTE_IP_PKT, (u8*)mIpPkt, mIpPktLen); | |
100 | if (result < 0) { | |
101 | ALOGE("Failed to put ip pkt request; result = %d", result); | |
102 | return result; | |
103 | } | |
104 | ||
105 | result = request.put_addr(MKEEP_ALIVE_ATTRIBUTE_SRC_MAC_ADDR, mSrcMacAddr); | |
106 | if (result < 0) { | |
107 | ALOGE("Failed to put src mac address request; result = %d", result); | |
108 | return result; | |
109 | } | |
110 | ||
111 | result = request.put_addr(MKEEP_ALIVE_ATTRIBUTE_DST_MAC_ADDR, mDstMacAddr); | |
112 | if (result < 0) { | |
113 | ALOGE("Failed to put dst mac address request; result = %d", result); | |
114 | return result; | |
115 | } | |
116 | ||
117 | result = request.put_u32(MKEEP_ALIVE_ATTRIBUTE_PERIOD_MSEC, mPeriodMsec); | |
118 | if (result < 0) { | |
119 | ALOGE("Failed to put period request; result = %d", result); | |
120 | return result; | |
121 | } | |
122 | ||
123 | request.attr_end(data); | |
124 | break; | |
125 | } | |
126 | ||
127 | case STOP_MKEEP_ALIVE: | |
128 | { | |
129 | result = request.create(GOOGLE_OUI, SLSI_NL80211_VENDOR_SUBCMD_STOP_KEEP_ALIVE_OFFLOAD); | |
130 | if (result != WIFI_SUCCESS) { | |
131 | ALOGE("Failed to create stop keep alive request; result = %d", result); | |
132 | return result; | |
133 | } | |
134 | ||
135 | nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA); | |
136 | ||
137 | result = request.put_u8(MKEEP_ALIVE_ATTRIBUTE_ID, mIndex); | |
138 | if (result < 0) { | |
139 | ALOGE("Failed to put id request; result = %d", result); | |
140 | return result; | |
141 | } | |
142 | ||
143 | request.attr_end(data); | |
144 | break; | |
145 | } | |
146 | ||
147 | default: | |
148 | ALOGE("Unknown wifi keep alive command"); | |
149 | result = WIFI_ERROR_UNKNOWN; | |
150 | } | |
151 | return result; | |
152 | } | |
153 | ||
154 | int start() { | |
155 | ALOGD("Start mkeep_alive command"); | |
156 | WifiRequest request(familyId(), ifaceId()); | |
157 | int result = createRequest(request); | |
158 | if (result != WIFI_SUCCESS) { | |
159 | ALOGE("Failed to create keep alive request; result = %d", result); | |
160 | return result; | |
161 | } | |
162 | ||
163 | result = requestResponse(request); | |
164 | if (result != WIFI_SUCCESS) { | |
165 | ALOGE("Failed to register keep alive response; result = %d", result); | |
166 | } | |
167 | return result; | |
168 | } | |
169 | ||
170 | virtual int handleResponse(WifiEvent& reply) { | |
171 | ALOGD("In MKeepAliveCommand::handleResponse"); | |
172 | ||
173 | if (reply.get_cmd() != NL80211_CMD_VENDOR) { | |
174 | ALOGD("Ignoring reply with cmd = %d", reply.get_cmd()); | |
175 | return NL_SKIP; | |
176 | } | |
177 | ||
178 | switch (mType) { | |
179 | case START_MKEEP_ALIVE: | |
180 | case STOP_MKEEP_ALIVE: | |
181 | break; | |
182 | ||
183 | default: | |
184 | ALOGW("Unknown mkeep_alive command"); | |
185 | } | |
186 | return NL_OK; | |
187 | } | |
188 | ||
189 | virtual int handleEvent(WifiEvent& event) { | |
190 | /* NO events! */ | |
191 | return NL_SKIP; | |
192 | } | |
193 | }; | |
194 | ||
195 | ||
196 | /* API to send specified mkeep_alive packet periodically. */ | |
197 | wifi_error wifi_start_sending_offloaded_packet(wifi_request_id index, wifi_interface_handle iface, | |
198 | u8 *ip_packet, u16 ip_packet_len, u8 *src_mac_addr, u8 *dst_mac_addr, u32 period_msec) | |
199 | { | |
200 | if ((index > 0 && index <= N_AVAIL_ID) && (ip_packet != NULL) && (src_mac_addr != NULL) | |
201 | && (dst_mac_addr != NULL) && (period_msec > 0) | |
202 | && (ip_packet_len <= MKEEP_ALIVE_IP_PKT_MAX)) { | |
203 | MKeepAliveCommand *cmd = new MKeepAliveCommand(iface, index, ip_packet, ip_packet_len, | |
204 | src_mac_addr, dst_mac_addr, period_msec, START_MKEEP_ALIVE); | |
205 | wifi_error result = (wifi_error)cmd->start(); | |
206 | delete cmd; | |
207 | return result; | |
208 | } else { | |
209 | ALOGE("Invalid mkeep_alive parameters"); | |
210 | return WIFI_ERROR_INVALID_ARGS; | |
211 | } | |
212 | } | |
213 | ||
214 | /* API to stop sending mkeep_alive packet. */ | |
215 | wifi_error wifi_stop_sending_offloaded_packet(wifi_request_id index, wifi_interface_handle iface) | |
216 | { | |
217 | if (index > 0 && index <= N_AVAIL_ID) { | |
218 | MKeepAliveCommand *cmd = new MKeepAliveCommand(iface, index, STOP_MKEEP_ALIVE); | |
219 | wifi_error result = (wifi_error)cmd->start(); | |
220 | delete cmd; | |
221 | return result; | |
222 | } else { | |
223 | ALOGE("Invalid mkeep_alive parameters"); | |
224 | return WIFI_ERROR_INVALID_ARGS; | |
225 | } | |
226 | } |