summaryrefslogtreecommitdiff
path: root/src/plugins/serial/serial_terminal.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/plugins/serial/serial_terminal.c')
-rw-r--r--src/plugins/serial/serial_terminal.c919
1 files changed, 919 insertions, 0 deletions
diff --git a/src/plugins/serial/serial_terminal.c b/src/plugins/serial/serial_terminal.c
new file mode 100644
index 0000000..41d3753
--- /dev/null
+++ b/src/plugins/serial/serial_terminal.c
@@ -0,0 +1,919 @@
+/*
+ * Copyright (c) 2007-2012 Pigeon Point Systems. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistribution of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * Redistribution in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * Neither the name of Pigeon Point Systems nor the names of
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any kind.
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.
+ * PIGEON POINT SYSTEMS ("PPS") AND ITS LICENSORS SHALL NOT BE LIABLE
+ * FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
+ * OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL
+ * PPS OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA,
+ * OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
+ * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
+ * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
+ * EVEN IF PPS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ */
+
+/* Serial Interface, Terminal Mode plugin. */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/poll.h>
+#include <termios.h>
+
+#include <ipmitool/ipmi.h>
+#include <ipmitool/ipmi_intf.h>
+#include <ipmitool/helper.h>
+#include <ipmitool/log.h>
+
+#if defined(HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#define IPMI_SERIAL_TIMEOUT 5
+#define IPMI_SERIAL_RETRY 5
+#define IPMI_SERIAL_MAX_RESPONSE 256
+
+/*
+ * Terminal Mode interface is required to support 40 byte transactions.
+ */
+#define IPMI_SERIAL_MAX_RQ_SIZE 37 /* 40 - 3 */
+#define IPMI_SERIAL_MAX_RS_SIZE 36 /* 40 - 4 */
+
+/*
+ * IPMB message header
+ */
+struct ipmb_msg_hdr {
+ unsigned char rsSA;
+ unsigned char netFn; /* NET FN | RS LUN */
+ unsigned char csum1;
+ unsigned char rqSA;
+ unsigned char rqSeq; /* RQ SEQ | RQ LUN */
+ unsigned char cmd;
+ unsigned char data[0];
+};
+
+/*
+ * Send Message command request for IPMB-format
+ */
+struct ipmi_send_message_rq {
+ unsigned char channel;
+ struct ipmb_msg_hdr msg;
+};
+
+/*
+ * Get Message command response for IPMB-format
+ */
+struct ipmi_get_message_rp {
+ unsigned char completion;
+ unsigned char channel;
+ unsigned char netFn;
+ unsigned char csum1;
+ unsigned char rsSA;
+ unsigned char rqSeq;
+ unsigned char cmd;
+ unsigned char data[0];
+};
+
+/*
+ * Terminal mode message header
+ */
+struct serial_term_hdr {
+ unsigned char netFn;
+ unsigned char seq;
+ unsigned char cmd;
+};
+
+/*
+ * Sending context
+ */
+struct serial_term_request_ctx {
+ uint8_t netFn;
+ uint8_t sa;
+ uint8_t seq;
+ uint8_t cmd;
+};
+
+/*
+ * Table of supported baud rates
+ */
+static const struct {
+ int baudinit;
+ int baudrate;
+} rates[] = {
+ { B2400, 2400 },
+ { B9600, 9600 },
+ { B19200, 19200 },
+ { B38400, 38400 },
+ { B57600, 57600 },
+ { B115200, 115200 },
+ { B230400, 230400 },
+#ifdef B460800
+ { B460800, 460800 },
+#endif
+};
+
+static int is_system;
+
+static int
+ipmi_serial_term_open(struct ipmi_intf * intf)
+{
+ struct termios ti;
+ unsigned int rate = 9600;
+ char *p;
+ int i;
+
+ if (!intf->devfile) {
+ lprintf(LOG_ERR, "Serial device is not specified");
+ return -1;
+ }
+
+ is_system = 0;
+
+ /* check if baud rate is specified */
+ if ((p = strchr(intf->devfile, ':'))) {
+ char * pp;
+
+ /* separate device name from baud rate */
+ *p++ = '\0';
+
+ /* check for second colon */
+ if ((pp = strchr(p, ':'))) {
+ /* this is needed to normally acquire baud rate */
+ *pp++ = '\0';
+
+ /* check if it is a system interface */
+ if (pp[0] == 'S' || pp[0] == 's') {
+ is_system = 1;
+ }
+ }
+
+ if (str2uint(p, &rate)) {
+ lprintf(LOG_ERR, "Invalid baud rate specified\n");
+ return -1;
+ }
+ }
+
+ intf->fd = open(intf->devfile, O_RDWR | O_NONBLOCK, 0);
+ if (intf->fd < 0) {
+ lperror(LOG_ERR, "Could not open device at %s", intf->devfile);
+ return -1;
+ }
+
+ for (i = 0; i < sizeof(rates) / sizeof(rates[0]); i++) {
+ if (rates[i].baudrate == rate) {
+ break;
+ }
+ }
+ if (i >= sizeof(rates) / sizeof(rates[0])) {
+ lprintf(LOG_ERR, "Unsupported baud rate %i specified", rate);
+ return -1;
+ }
+
+ tcgetattr(intf->fd, &ti);
+
+ cfsetispeed(&ti, rates[i].baudinit);
+ cfsetospeed(&ti, rates[i].baudinit);
+
+ /* 8N1 */
+ ti.c_cflag &= ~PARENB;
+ ti.c_cflag &= ~CSTOPB;
+ ti.c_cflag &= ~CSIZE;
+ ti.c_cflag |= CS8;
+
+ /* enable the receiver and set local mode */
+ ti.c_cflag |= (CLOCAL | CREAD);
+
+ /* no flow control */
+ ti.c_cflag &= ~CRTSCTS;
+ ti.c_iflag &= ~(IGNBRK | IGNCR | INLCR | ICRNL | INPCK | ISTRIP
+ | IXON | IXOFF | IXANY);
+#ifdef IUCLC
+ /* Only disable uppercase-to-lowercase mapping on input for
+ platforms supporting the flag. */
+ ti.c_iflag &= ~(IUCLC);
+#endif
+
+ ti.c_oflag &= ~(OPOST);
+ ti.c_lflag &= ~(ICANON | ISIG | ECHO | ECHONL | NOFLSH);
+
+ /* set the new options for the port with flushing */
+ tcsetattr(intf->fd, TCSAFLUSH, &ti);
+
+ if (intf->session->timeout == 0)
+ intf->session->timeout = IPMI_SERIAL_TIMEOUT;
+ if (intf->session->retry == 0)
+ intf->session->retry = IPMI_SERIAL_RETRY;
+
+ intf->opened = 1;
+
+ return 0;
+}
+
+static void
+ipmi_serial_term_close(struct ipmi_intf * intf)
+{
+ if (intf->opened) {
+ close(intf->fd);
+ intf->fd = -1;
+ }
+
+ if (intf->session) {
+ free(intf->session);
+ intf->session = NULL;
+ }
+
+ intf->opened = 0;
+}
+
+/*
+ * This function waits for incoming byte during timeout (ms).
+ */
+static int
+serial_wait_for_data(struct ipmi_intf * intf)
+{
+ int n;
+ struct pollfd pfd;
+
+ pfd.fd = intf->fd;
+ pfd.events = POLLIN;
+ pfd.revents = 0;
+
+ n = poll(&pfd, 1, intf->session->timeout*1000);
+ if (n < 0) {
+ lperror(LOG_ERR, "Poll for serial data failed");
+ return -1;
+ } else if (!n) {
+ return -1;
+ }
+ return 0;
+}
+
+/*
+ * Read a line from serial port
+ * Returns > 0 if there is a line, < 0 on error or timeout
+ */
+static int
+serial_read_line(struct ipmi_intf * intf, char *str, int len)
+{
+ int rv, i;
+
+ *str = 0;
+ i = 0;
+ while (i < len) {
+ if (serial_wait_for_data(intf)) {
+ return -1;
+ }
+ rv = read(intf->fd, str + i, 1);
+ if (rv < 0) {
+ return -1;
+ } else if (!rv) {
+ lperror(LOG_ERR, "Serial read failed: %s", strerror(errno));
+ return -1;
+ }
+ if (str[i] == '\n' || str[i] == '\r') {
+ if (verbose > 4) {
+ char c = str[i];
+ str[i] = '\0';
+ fprintf(stderr, "Received data: %s\n", str);
+ str[i] = c;
+ }
+ return i + 1;
+ } else {
+ i++;
+ }
+ }
+
+ lprintf(LOG_ERR, "Serial data is too long");
+ return -1;
+}
+
+/*
+ * Send zero-terminated string to serial port
+ * Returns the string length or negative error code
+ */
+static int
+serial_write_line(struct ipmi_intf * intf, const char *str)
+{
+ int rv, cnt = 0;
+ int cb = strlen(str);
+
+ while (cnt < cb) {
+ rv = write(intf->fd, str + cnt, cb - cnt);
+ if (rv < 0) {
+ return -1;
+ } else if (rv == 0) {
+ return -1;
+ }
+ cnt += rv;
+ }
+
+ return cnt;
+}
+
+/*
+ * Flush the buffers
+ */
+static int
+serial_flush(struct ipmi_intf * intf)
+{
+#if defined(TCFLSH)
+ return ioctl(intf->fd, TCFLSH, TCIOFLUSH);
+#elif defined(TIOCFLUSH)
+ return ioctl(intf->fd, TIOCFLUSH);
+#else
+# error "unsupported platform, missing flush support (TCFLSH/TIOCFLUSH)"
+#endif
+
+}
+
+/*
+ * Receive IPMI response from the device
+ * Len: buffer size
+ * Returns: -1 or response lenth on success
+ */
+static int
+recv_response(struct ipmi_intf * intf, unsigned char *data, int len)
+{
+ char hex_rs[IPMI_SERIAL_MAX_RESPONSE * 3];
+ int i, j, resp_len = 0;
+ unsigned long rv;
+ char *p, *pp;
+ char ch, str_hex[3];
+
+ p = hex_rs;
+ while (1) {
+ if ((rv = serial_read_line(intf, p, sizeof(hex_rs) - resp_len)) < 0) {
+ /* error */
+ return -1;
+ }
+ p += rv;
+ resp_len += rv;
+ if (*(p - 2) == ']' && (*(p - 1) == '\n' || *(p - 1) == '\r')) {
+ *p = 0;
+ break;
+ }
+ }
+
+ p = strrchr(hex_rs, '[');
+ if (!p) {
+ lprintf(LOG_ERR, "Serial response is invalid");
+ return -1;
+ }
+
+ p++;
+ pp = strchr(p, ']');
+ if (!pp) {
+ lprintf(LOG_ERR, "Serial response is invalid");
+ return -1;
+ }
+ *pp = 0;
+
+ /* was it an error? */
+ if (strncmp(p, "ERR ", 4) == 0) {
+ serial_write_line(intf, "\r\r\r\r");
+ sleep(1);
+ serial_flush(intf);
+ errno = 0;
+ rv = strtoul(p + 4, &p, 16);
+ if ((rv && rv < 0x100 && *p == '\0')
+ || (rv == 0 && !errno)) {
+ /* The message didn't get it through. The upper
+ level will have to re-send */
+ return 0;
+ } else {
+ lprintf(LOG_ERR, "Serial response is invalid");
+ return -1;
+ }
+ }
+
+ /* this is needed for correct string to long conversion */
+ str_hex[2] = 0;
+
+ /* parse the response */
+ i = 0;
+ j = 0;
+ while (*p) {
+ if (i >= len) {
+ lprintf(LOG_ERR, "Serial response is too long(%d, %d)", i, len);
+ return -1;
+ }
+ ch = *(p++);
+ if (isxdigit(ch)) {
+ str_hex[j++] = ch;
+ } else {
+ if (j == 1 || !isspace(ch)) {
+ lprintf(LOG_ERR, "Serial response is invalid");
+ return -1;
+ }
+ }
+ if (j == 2) {
+ unsigned long tmp;
+ errno = 0;
+ /* parse the hex number */
+ tmp = strtoul(str_hex, NULL, 16);
+ if ( tmp > 0xFF || ( !tmp && errno ) ) {
+ lprintf(LOG_ERR, "Serial response is invalid");
+ return -1;
+ }
+ data[i++] = tmp;
+ j = 0;
+ }
+ }
+
+ return i;
+}
+
+/*
+ * Allocate sequence number for tracking
+ */
+static uint8_t
+serial_term_alloc_seq(void)
+{
+ static uint8_t seq = 0;
+ if (++seq == 64) {
+ seq = 0;
+ }
+ return seq;
+}
+
+/*
+ * Build IPMB message to be transmitted
+ */
+static int
+serial_term_build_msg(const struct ipmi_intf * intf,
+ const struct ipmi_rq * req, uint8_t * msg, size_t max_len,
+ struct serial_term_request_ctx * ctx, int * msg_len)
+{
+ uint8_t * data = msg, seq;
+ struct serial_term_hdr * term_hdr = (struct serial_term_hdr *) msg;
+ struct ipmi_send_message_rq * outer_rq = NULL;
+ struct ipmi_send_message_rq * inner_rq = NULL;
+ int bridging_level;
+
+ /* acquire bridging level */
+ if (intf->target_addr && intf->target_addr != intf->my_addr) {
+ if (intf->transit_addr != 0) {
+ bridging_level = 2;
+ } else {
+ bridging_level = 1;
+ }
+ } else {
+ bridging_level = 0;
+ }
+
+ /* check overall packet length */
+ if(req->msg.data_len + 3 + bridging_level * 8 > max_len) {
+ lprintf(LOG_ERR, "ipmitool: Message data is too long");
+ return -1;
+ }
+
+ /* allocate new sequence number */
+ seq = serial_term_alloc_seq() << 2;
+
+ /* check for bridging */
+ if (bridging_level) {
+ /* compose terminal message header */
+ term_hdr->netFn = 0x18;
+ term_hdr->seq = seq;
+ term_hdr->cmd = 0x34;
+
+ /* set pointer to send message request data */
+ outer_rq = (struct ipmi_send_message_rq *) (term_hdr + 1);
+
+ if (bridging_level == 2) {
+ /* compose the outer send message request */
+ outer_rq->channel = intf->transit_channel | 0x40;
+ outer_rq->msg.rsSA = intf->transit_addr;
+ outer_rq->msg.netFn = 0x18;
+ outer_rq->msg.csum1 = -(outer_rq->msg.rsSA + outer_rq->msg.netFn);
+ outer_rq->msg.rqSA = intf->my_addr;
+ outer_rq->msg.rqSeq = seq;
+ outer_rq->msg.cmd = 0x34;
+
+ /* inner request is further */
+ inner_rq = (outer_rq + 1);
+ } else {
+ /* there is only one header */
+ inner_rq = outer_rq;
+ }
+
+ /* compose the inner send message request */
+ inner_rq->channel = intf->target_channel | 0x40;
+ inner_rq->msg.rsSA = intf->target_addr;
+ inner_rq->msg.netFn = (req->msg.netfn << 2) | req->msg.lun;
+ inner_rq->msg.csum1 = -(inner_rq->msg.rsSA + inner_rq->msg.netFn);
+ inner_rq->msg.rqSA = intf->my_addr;
+ inner_rq->msg.rqSeq = seq;
+ inner_rq->msg.cmd = req->msg.cmd;
+
+ /* check if interface is the system one */
+ if (is_system) {
+ /* need response to LUN 2 */
+ outer_rq->msg.rqSeq |= 2;
+
+ /* do not track response */
+ outer_rq->channel &= ~0x40;
+
+ /* restore BMC SA if bridging not to primary IPMB channel */
+ if (outer_rq->channel) {
+ outer_rq->msg.rqSA = IPMI_BMC_SLAVE_ADDR;
+ }
+ }
+
+ /* fill the second context */
+ ctx[1].netFn = outer_rq->msg.netFn;
+ ctx[1].sa = outer_rq->msg.rsSA;
+ ctx[1].seq = outer_rq->msg.rqSeq;
+ ctx[1].cmd = outer_rq->msg.cmd;
+
+ /* move write pointer */
+ msg = (uint8_t *)(inner_rq + 1);
+ } else {
+ /* compose terminal message header */
+ term_hdr->netFn = (req->msg.netfn << 2) | req->msg.lun;
+ term_hdr->seq = seq;
+ term_hdr->cmd = req->msg.cmd;
+
+ /* move write pointer */
+ msg = (uint8_t *)(term_hdr + 1);
+ }
+
+ /* fill the first context */
+ ctx[0].netFn = term_hdr->netFn;
+ ctx[0].seq = term_hdr->seq;
+ ctx[0].cmd = term_hdr->cmd;
+
+ /* write request data */
+ memcpy(msg, req->msg.data, req->msg.data_len);
+
+ /* move write pointer */
+ msg += req->msg.data_len;
+
+ if (bridging_level) {
+ /* write inner message checksum */
+ *msg++ = ipmi_csum(&inner_rq->msg.rqSA, req->msg.data_len + 3);
+
+ /* check for double bridging */
+ if (bridging_level == 2) {
+ /* write outer message checksum */
+ *msg++ = ipmi_csum(&outer_rq->msg.rqSA, 4);
+ }
+ }
+
+
+ /* save message length */
+ *msg_len = msg - data;
+
+ /* return bridging level */
+ return bridging_level;
+}
+
+/*
+ * Send message to serial port
+ */
+static int
+serial_term_send_msg(struct ipmi_intf * intf, uint8_t * msg, int msg_len)
+{
+ int i, size, tmp = 0;
+ uint8_t * buf, * data;
+
+ if (verbose > 3) {
+ fprintf(stderr, "Sending request:\n");
+ fprintf(stderr, " NetFN/rsLUN = 0x%x\n", msg[0]);
+ fprintf(stderr, " rqSeq = 0x%x\n", msg[1]);
+ fprintf(stderr, " cmd = 0x%x\n", msg[2]);
+ if (msg_len > 7) {
+ fprintf(stderr, " data_len = %d\n", msg_len - 3);
+ fprintf(stderr, " data = %s\n",
+ buf2str(msg + 3, msg_len - 3));
+ }
+ }
+
+ if (verbose > 4) {
+ fprintf(stderr, "Message data:\n");
+ fprintf(stderr, " %s\n", buf2str(msg, msg_len));
+ }
+
+ /* calculate required buffer size */
+ size = msg_len * 2 + 4;
+
+ /* allocate buffer for output data */
+ buf = data = (uint8_t *) alloca(size);
+
+ if (!buf) {
+ lperror(LOG_ERR, "ipmitool: alloca error");
+ return -1;
+ }
+
+ /* start character */
+ *buf++ = '[';
+
+ /* body */
+ for (i = 0; i < msg_len; i++) {
+ buf += sprintf( buf, "%02x", msg[i]);
+ }
+
+ /* stop character */
+ *buf++ = ']';
+
+ /* carriage return */
+ *buf++ = '\r';
+
+ /* line feed */
+ *buf++ = '\n';
+
+ /* write data to serial port */
+ tmp = write(intf->fd, data, size);
+ if (tmp <= 0) {
+ lperror(LOG_ERR, "ipmitool: write error");
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Wait for request response
+ */
+static int
+serial_term_wait_response(struct ipmi_intf * intf,
+ struct serial_term_request_ctx * req_ctx,
+ uint8_t * msg, size_t max_len)
+{
+ struct serial_term_hdr * hdr = (struct serial_term_hdr *) msg;
+ int msg_len;
+
+ /* wait for response(s) */
+ do {
+ /* receive message */
+ msg_len = recv_response(intf, msg, max_len);
+
+ /* check if valid message received */
+ if (msg_len > 0) {
+ /* validate message size */
+ if (msg_len < 4) {
+ /* either bad response or non-related message */
+ continue;
+ }
+
+ /* check for the waited response */
+ if (hdr->netFn == (req_ctx->netFn|4)
+ && (hdr->seq & ~3) == req_ctx->seq
+ && hdr->cmd == req_ctx->cmd) {
+ /* check if something new has been parsed */
+ if (verbose > 3) {
+ fprintf(stderr, "Got response:\n");
+ fprintf(stderr, " NetFN/rsLUN = 0x%x\n", msg[0]);
+ fprintf(stderr, " rqSeq/Bridge = 0x%x\n", msg[1]);
+ fprintf(stderr, " cmd = 0x%x\n", msg[2]);
+ fprintf(stderr, " completion code = 0x%x\n", msg[3]);
+ if (msg_len > 8) {
+ fprintf(stderr, " data_len = %d\n",
+ msg_len - 4);
+ fprintf(stderr, " data = %s\n",
+ buf2str(msg + 4, msg_len - 4));
+ }
+ }
+
+ /* move to start from completion code */
+ memmove(msg, hdr + 1, msg_len - sizeof (*hdr));
+
+ /* the waited one */
+ return msg_len - sizeof (*hdr);
+ }
+ }
+ } while (msg_len > 0);
+
+ return 0;
+}
+
+/*
+ * Get message from receive message queue
+ */
+static int
+serial_term_get_message(struct ipmi_intf * intf,
+ struct serial_term_request_ctx * req_ctx,
+ uint8_t * msg, size_t max_len)
+{
+ uint8_t data[IPMI_SERIAL_MAX_RESPONSE];
+ struct serial_term_request_ctx tmp_ctx;
+ struct ipmi_get_message_rp * rp = (struct ipmi_get_message_rp *) data;
+ struct serial_term_hdr hdr;
+ clock_t start, tm;
+ int rv, netFn, rqSeq;
+
+ start = clock();
+
+ do {
+ /* fill-in request context */
+ tmp_ctx.netFn = 0x18;
+ tmp_ctx.seq = serial_term_alloc_seq() << 2;
+ tmp_ctx.cmd = 0x33;
+
+ /* fill-in request data */
+ hdr.netFn = tmp_ctx.netFn;
+ hdr.seq = tmp_ctx.seq;
+ hdr.cmd = tmp_ctx.cmd;
+
+ /* send request */
+ serial_flush(intf);
+ serial_term_send_msg(intf, (uint8_t *) &hdr, 3);
+
+ /* wait for response */
+ rv = serial_term_wait_response(intf, &tmp_ctx, data, sizeof (data));
+
+ /* check for IO error or timeout */
+ if (rv <= 0) {
+ return rv;
+ }
+
+ netFn = (req_ctx->netFn & ~3)|(req_ctx->seq & 3)|4;
+ rqSeq = req_ctx->seq & ~3;
+
+ /* check completion code */
+ if (rp->completion == 0) {
+ /* check for the waited response */
+ if (rp->netFn == netFn
+ && rp->rsSA == req_ctx->sa
+ && rp->rqSeq == rqSeq
+ && rp->cmd == req_ctx->cmd) {
+ /* copy the rest of message */
+ memcpy(msg, rp + 1, rv - sizeof (*rp) - 1);
+ return rv - sizeof (*rp) - 1;
+ }
+ } else if (rp->completion != 0x80) {
+ return 0;
+ }
+
+ tm = clock() - start;
+
+ tm /= CLOCKS_PER_SEC;
+ } while (tm < intf->session->timeout);
+
+ return 0;
+}
+
+static struct ipmi_rs *
+ipmi_serial_term_send_cmd(struct ipmi_intf * intf, struct ipmi_rq * req)
+{
+ static struct ipmi_rs rsp;
+ uint8_t msg[IPMI_SERIAL_MAX_RESPONSE], * resp = msg;
+ struct serial_term_request_ctx req_ctx[2];
+ int retry, rv, msg_len, bridging_level;
+
+ if (!intf->opened && intf->open && intf->open(intf) < 0) {
+ return NULL;
+ }
+
+ /* Send the message and receive the answer */
+ for (retry = 0; retry < intf->session->retry; retry++) {
+ /* build output message */
+ bridging_level = serial_term_build_msg(intf, req, msg,
+ sizeof (msg), req_ctx, &msg_len);
+ if (msg_len < 0) {
+ return NULL;
+ }
+
+ /* send request */
+ serial_flush(intf);
+ serial_term_send_msg(intf, msg, msg_len);
+
+ /* wait for response */
+ rv = serial_term_wait_response(intf, &req_ctx[0], msg, sizeof (msg));
+
+ /* check for IO error */
+ if (rv < 0) {
+ return NULL;
+ }
+
+ /* check for timeout */
+ if (rv == 0) {
+ continue;
+ }
+
+ /* check for bridging */
+ if (bridging_level && msg[0] == 0) {
+ /* in the case of payload interface we check receive message queue */
+ if (is_system) {
+ /* check message flags */
+ rv = serial_term_get_message(intf, &req_ctx[1],
+ msg, sizeof (msg));
+
+ /* check for IO error */
+ if (rv < 0) {
+ return NULL;
+ }
+
+ /* check for timeout */
+ if (rv == 0) {
+ continue;
+ }
+ /* check if response for inner request is not encapsulated */
+ } else if (rv == 1) {
+ /* wait for response for inner request */
+ rv = serial_term_wait_response(intf, &req_ctx[1],
+ msg, sizeof (msg));
+
+ /* check for IO error */
+ if (rv < 0) {
+ return NULL;
+ }
+
+ /* check for timeout */
+ if (rv == 0) {
+ continue;
+ }
+ } else {
+ /* skip outer level header */
+ resp = msg + sizeof (struct ipmb_msg_hdr) + 1;
+ /* decrement response size */
+ rv -= + sizeof (struct ipmb_msg_hdr) + 2;
+ }
+
+ /* check response size */
+ if (resp[0] == 0 && bridging_level == 2 && rv < 8) {
+ lprintf(LOG_ERR, "ipmitool: Message response is too short");
+ /* invalid message length */
+ return NULL;
+ }
+ }
+
+ /* check for double bridging */
+ if (bridging_level == 2 && resp[0] == 0) {
+ /* get completion code */
+ rsp.ccode = resp[7];
+ rsp.data_len = rv - 9;
+ memcpy(rsp.data, resp + 8, rsp.data_len);
+ } else {
+ rsp.ccode = resp[0];
+ rsp.data_len = rv - 1;
+ memcpy(rsp.data, resp + 1, rsp.data_len);
+ }
+
+ /* return response */
+ return &rsp;
+ }
+
+ /* no valid response */
+ return NULL;
+}
+
+static int
+ipmi_serial_term_setup(struct ipmi_intf * intf)
+{
+ intf->session = malloc(sizeof(struct ipmi_session));
+ if (intf->session == NULL) {
+ lprintf(LOG_ERR, "ipmitool: malloc failure");
+ return -1;
+ }
+
+ memset(intf->session, 0, sizeof(struct ipmi_session));
+
+ /* setup default LAN maximum request and response sizes */
+ intf->max_request_data_size = IPMI_SERIAL_MAX_RQ_SIZE;
+ intf->max_response_data_size = IPMI_SERIAL_MAX_RS_SIZE;
+ return 0;
+}
+
+int
+ipmi_serial_term_set_my_addr(struct ipmi_intf * intf, uint8_t addr)
+{
+ intf->my_addr = addr;
+ return 0;
+}
+
+struct ipmi_intf ipmi_serial_term_intf = {
+ name: "serial-terminal",
+ desc: "Serial Interface, Terminal Mode",
+ setup: ipmi_serial_term_setup,
+ open: ipmi_serial_term_open,
+ close: ipmi_serial_term_close,
+ sendrecv: ipmi_serial_term_send_cmd,
+ set_my_addr:ipmi_serial_term_set_my_addr
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 08:47:45 +0000