Shad Ansari | 2f7f9be | 2017-06-07 13:34:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | <:copyright-BRCM:2016:DUAL/GPL:standard |
| 3 | |
| 4 | Broadcom Proprietary and Confidential.(c) 2016 Broadcom |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Unless you and Broadcom execute a separate written software license |
| 8 | agreement governing use of this software, this software is licensed |
| 9 | to you under the terms of the GNU General Public License version 2 |
| 10 | (the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php, |
| 11 | with the following added to such license: |
| 12 | |
| 13 | As a special exception, the copyright holders of this software give |
| 14 | you permission to link this software with independent modules, and |
| 15 | to copy and distribute the resulting executable under terms of your |
| 16 | choice, provided that you also meet, for each linked independent |
| 17 | module, the terms and conditions of the license of that module. |
| 18 | An independent module is a module which is not derived from this |
| 19 | software. The special exception does not apply to any modifications |
| 20 | of the software. |
| 21 | |
| 22 | Not withstanding the above, under no circumstances may you combine |
| 23 | this software in any way with any other Broadcom software provided |
| 24 | under a license other than the GPL, without Broadcom's express prior |
| 25 | written consent. |
| 26 | |
| 27 | :> |
| 28 | */ |
| 29 | |
| 30 | /* |
| 31 | * bcmtr_inband.c - In-band transport driver |
| 32 | */ |
| 33 | #include <bcmos_system.h> |
| 34 | #include <bcmtr_inband.h> |
| 35 | #include <sys/types.h> |
| 36 | #include <sys/socket.h> |
| 37 | |
| 38 | typedef struct device_info |
| 39 | { |
| 40 | bcmos_ipv4_address remote_ip; |
| 41 | uint16_t remote_port; |
| 42 | uint8_t channel; |
| 43 | int tr_udp_sock; |
| 44 | } device_info; |
| 45 | |
| 46 | static device_info dev_info[BCMTR_MAX_OLTS]; |
| 47 | |
| 48 | #define DEBUG_ONLY 0 |
| 49 | |
| 50 | /** Initialize in-band transport driver |
| 51 | * \returns: 0 in case of success or error code < 0 |
| 52 | */ |
| 53 | bcmos_errno bcmtr_ib_init(void) |
| 54 | { |
| 55 | return BCM_ERR_OK; |
| 56 | } |
| 57 | |
| 58 | /** Cleanup in-band transport driver |
| 59 | * \returns: 0 in case of success or error code < 0 |
| 60 | */ |
| 61 | void bcmtr_ib_exit(void) |
| 62 | { |
| 63 | int i; |
| 64 | |
| 65 | for (i=0; i<BCMTR_MAX_OLTS; i++) |
| 66 | { |
| 67 | bcmtr_ib_disconnect(i); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | /* Receive packet */ |
| 72 | static bcmos_errno _bcmtr_ib_rx(uint32_t device, int s, bcmos_buf **buf, uint8_t *ch) |
| 73 | { |
| 74 | struct sockaddr_in sa; |
| 75 | #if 0 |
| 76 | struct iovec iov = {.iov_len = BCMTR_MAX_MTU_SIZE}; |
| 77 | struct msghdr msg = { |
| 78 | .msg_iov = &iov, .msg_iovlen = 1, |
| 79 | .msg_name = &sa, .msg_namelen = sizeof(sa) |
| 80 | }; |
| 81 | #endif |
| 82 | bcmos_buf *b; |
| 83 | ssize_t len; |
| 84 | |
| 85 | b = bcmos_buf_alloc(BCMTR_MAX_MTU_SIZE); |
| 86 | if (!b) |
| 87 | { |
| 88 | bcmos_printf("%s: Failed to allocate buffer\n", __FUNCTION__); |
| 89 | return BCM_ERR_NOMEM; |
| 90 | } |
| 91 | #if 0 |
| 92 | iov.iov_base = bcmos_buf_data(b); |
| 93 | #endif |
| 94 | memset(&sa, 0, sizeof(sa)); |
| 95 | len = recv(s, bcmos_buf_data(b), BCMTR_MAX_MTU_SIZE, 0); |
| 96 | if (len <= 0) |
| 97 | { |
| 98 | bcmos_printf("%s: recvmsg() --> %d\n", __FUNCTION__, len); |
| 99 | bcmos_buf_free(b); |
| 100 | return BCM_ERR_COMM_FAIL; |
| 101 | } |
| 102 | |
| 103 | *ch = dev_info[device].channel; |
| 104 | dev_info[device].channel = 0; |
| 105 | bcmos_buf_length_set(b, (int)len); |
| 106 | *buf = b; |
| 107 | |
| 108 | #if DEBUG_ONLY |
| 109 | bcmos_printf("\nReceived to %d bytes from channel %d/%d port", len, *ch, sa.sin_port); |
| 110 | |
| 111 | { |
| 112 | int ii = 0; |
| 113 | unsigned char *c = bcmos_buf_data(b); |
| 114 | int size = (int)len; |
| 115 | |
| 116 | for (ii=0; ii<size; ii++) |
| 117 | { |
| 118 | if (0==(ii%16)) bcmos_printf("\n"); |
| 119 | if (0==(ii%8)) bcmos_printf(" "); |
| 120 | bcmos_printf(" %02x", *c); |
| 121 | c++; |
| 122 | } |
| 123 | bcmos_printf("\n"); |
| 124 | } |
| 125 | #endif |
| 126 | |
| 127 | return BCM_ERR_OK; |
| 128 | } |
| 129 | |
| 130 | /** Connect to maple device */ |
| 131 | bcmos_errno bcmtr_ib_connect(uint8_t device, bcmos_ipv4_address ip_address, uint16_t udp_port) |
| 132 | { |
| 133 | int r = 0; |
| 134 | int s = 0; |
| 135 | struct sockaddr_in sa; |
| 136 | |
| 137 | /*Check for valid device*/ |
| 138 | BUG_ON((unsigned)device >= BCMTR_MAX_OLTS); |
| 139 | |
| 140 | if (dev_info[device].tr_udp_sock) |
| 141 | return BCM_ERR_ALREADY; |
| 142 | |
| 143 | dev_info[device].remote_ip = ip_address; |
| 144 | dev_info[device].remote_port = udp_port; |
| 145 | |
| 146 | /*check that ip address and port have been initialized*/ |
| 147 | if(dev_info[device].remote_port == 0 || dev_info[device].remote_ip.u32 == 0) |
| 148 | { |
| 149 | bcmos_printf("%s: IP address and port not initialized. Error %d\n", __FUNCTION__, r); |
| 150 | return BCM_ERR_RANGE; |
| 151 | } |
| 152 | |
| 153 | /* Create socket */ |
| 154 | s = socket(AF_INET, SOCK_DGRAM, 0); |
| 155 | if (!s) |
| 156 | { |
| 157 | bcmos_printf("%s: Failed to create socket. Error %d\n", __FUNCTION__, s); |
| 158 | return BCM_ERR_COMM_FAIL; |
| 159 | } |
| 160 | |
| 161 | /* Connect to remote */ |
| 162 | memset(&sa, 0, sizeof(sa)); |
| 163 | sa.sin_family = AF_INET; |
| 164 | sa.sin_port = (in_port_t)htons(dev_info[device].remote_port); |
| 165 | sa.sin_addr.s_addr = (in_addr_t)htonl(dev_info[device].remote_ip.u32); |
| 166 | r = connect(s, (struct sockaddr*)&sa, sizeof(sa)); |
| 167 | if (r) |
| 168 | { |
| 169 | bcmos_printf("%s: Failed to connect socket. Error %d\n", __FUNCTION__, r); |
| 170 | close(s); |
| 171 | return BCM_ERR_COMM_FAIL; |
| 172 | } |
| 173 | |
| 174 | { |
| 175 | socklen_t slen; |
| 176 | if (getsockname(s, (struct sockaddr *)&sa, &slen) < 0) |
| 177 | { |
| 178 | bcmos_printf("%s: Connected socket invalid. Error %d\n", __FUNCTION__, r); |
| 179 | close(s); |
| 180 | return BCM_ERR_COMM_FAIL; |
| 181 | } |
| 182 | |
| 183 | bcmos_printf("%s: device %d: socket (port %d) connected to %d.%d.%d.%d:%d\n", |
| 184 | __FUNCTION__, device, ntohs((uint16_t)sa.sin_port), |
| 185 | (int)(dev_info[device].remote_ip.u32 >> 24), (int)((dev_info[device].remote_ip.u32 >> 16) & 0xff), |
| 186 | (int)((dev_info[device].remote_ip.u32 >> 8) & 0xff), (int)(dev_info[device].remote_ip.u32 & 0xff), |
| 187 | (int)dev_info[device].remote_port); |
| 188 | } |
| 189 | |
| 190 | dev_info[device].tr_udp_sock = s; |
| 191 | |
| 192 | return BCM_ERR_OK; |
| 193 | } |
| 194 | |
| 195 | /** Disconnect. All buffers are released |
| 196 | * \param[in] device Maple device index |
| 197 | * \returns: 0 in case of success or error code < 0 |
| 198 | */ |
| 199 | bcmos_errno bcmtr_ib_disconnect(uint8_t device) |
| 200 | { |
| 201 | BUG_ON((unsigned)device >= BCMTR_MAX_OLTS); |
| 202 | |
| 203 | bcmos_printf("%s: disconnecting %d..", __FUNCTION__, device); |
| 204 | if (dev_info[device].tr_udp_sock) |
| 205 | { |
| 206 | int s = dev_info[device].tr_udp_sock; |
| 207 | dev_info[device].tr_udp_sock = 0; |
| 208 | close(s); |
| 209 | } |
| 210 | bcmos_printf("done\n"); |
| 211 | return BCM_ERR_OK; |
| 212 | } |
| 213 | |
| 214 | /** Send packet to device via in-band interface |
| 215 | * \param[in] device Mapole device index |
| 216 | * \param[in] channel Logical channel |
| 217 | * \param[in] buf Buffer to be transmitted |
| 218 | * \returns: 0 in case of success or error code < 0 |
| 219 | */ |
| 220 | bcmos_errno bcmtr_ib_send(uint8_t device, uint8_t channel, bcmos_buf *buf) |
| 221 | { |
| 222 | int buflen = bcmos_buf_length(buf); |
| 223 | struct iovec iov = { .iov_base = bcmos_buf_data(buf), .iov_len = buflen }; |
| 224 | struct msghdr msg = { |
| 225 | .msg_iov = &iov, .msg_iovlen = 1, .msg_flags=MSG_DONTWAIT, |
| 226 | .msg_name = NULL, .msg_namelen = 0 |
| 227 | }; |
| 228 | ssize_t len; |
| 229 | |
| 230 | dev_info[device].channel = channel; |
| 231 | |
| 232 | len = sendmsg(dev_info[device].tr_udp_sock, &msg, 0); |
| 233 | if ((int)len < buflen) |
| 234 | { |
| 235 | bcmos_printf("%s: sendmsg(%u) --> %d\n", __FUNCTION__, buflen, len); |
| 236 | bcmos_buf_free(buf); |
| 237 | return BCM_ERR_NOT_CONNECTED; |
| 238 | } |
| 239 | |
| 240 | #if 1 |
| 241 | { |
| 242 | int ii = 0; |
| 243 | unsigned char *c = bcmos_buf_data(buf); |
| 244 | struct sockaddr_in sa; |
| 245 | socklen_t slen; |
| 246 | |
| 247 | for (ii=0; ii<(int)len; ii++) |
| 248 | { |
| 249 | if (0==(ii%16)) bcmos_printf("\n"); |
| 250 | if (0==(ii%8)) bcmos_printf(" "); |
| 251 | bcmos_printf(" %02x", *c); |
| 252 | c++; |
| 253 | } |
| 254 | |
| 255 | if (getsockname(dev_info[device].tr_udp_sock, (struct sockaddr *)&sa, &slen) < 0) |
| 256 | { |
| 257 | bcmos_printf("%s: Connected socket invalid\n", __FUNCTION__); |
| 258 | return BCM_ERR_COMM_FAIL; |
| 259 | } |
| 260 | bcmos_printf("\nSent %d bytes to channel %d from port %d\t", len, channel, sa.sin_port); |
| 261 | } |
| 262 | #endif |
| 263 | |
| 264 | return BCM_ERR_OK; |
| 265 | } |
| 266 | |
| 267 | /* Receive packet from device */ |
| 268 | bcmos_errno bcmtr_ib_receive(uint32_t device, uint8_t *channel, bcmos_buf **buf) |
| 269 | { |
| 270 | if (device >= BCMTR_MAX_OLTS || ! dev_info[device].tr_udp_sock) |
| 271 | { |
| 272 | return BCM_ERR_PARM; |
| 273 | } |
| 274 | |
| 275 | return _bcmtr_ib_rx(device, dev_info[device].tr_udp_sock, buf, channel); |
| 276 | } |