#include "parse-util.h"
#include "string-util.h"
-#define CAN_TERMINATION_OHM_VALUE 120
-
-int config_parse_can_bitrate(
- const char* unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata) {
-
- uint32_t *br = data;
- uint64_t sz;
- int r;
-
- assert(filename);
- assert(lvalue);
- assert(rvalue);
- assert(data);
-
- r = parse_size(rvalue, 1000, &sz);
- if (r < 0) {
- log_syntax(unit, LOG_WARNING, filename, line, r,
- "Failed to parse can bitrate '%s', ignoring: %m", rvalue);
- return 0;
- }
-
- /* Linux uses __u32 for bitrates, so the value should not exceed that. */
- if (sz <= 0 || sz > UINT32_MAX) {
- log_syntax(unit, LOG_WARNING, filename, line, 0,
- "Bit rate out of permitted range 1...4294967295");
- return 0;
- }
-
- *br = (uint32_t) sz;
-
- return 0;
-}
+#define CAN_TERMINATION_DEFAULT_OHM_VALUE 120
int can_set_netlink_message(Link *link, sd_netlink_message *m) {
- struct can_ctrlmode cm = {};
int r;
assert(link);
if (r < 0)
return log_link_debug_errno(link, r, "Could not open IFLA_INFO_DATA container: %m");
- if (link->network->can_bitrate > 0 || link->network->can_sample_point > 0) {
+ if (link->network->can_bitrate > 0) {
struct can_bittiming bt = {
.bitrate = link->network->can_bitrate,
.sample_point = link->network->can_sample_point,
return log_link_debug_errno(link, r, "Could not append IFLA_CAN_BITTIMING attribute: %m");
}
- if (link->network->can_data_bitrate > 0 || link->network->can_data_sample_point > 0) {
+ if (link->network->can_data_bitrate > 0) {
struct can_bittiming bt = {
.bitrate = link->network->can_data_bitrate,
.sample_point = link->network->can_data_sample_point,
else
restart_ms = DIV_ROUND_UP(link->network->can_restart_us, USEC_PER_MSEC);
- if (restart_ms > UINT32_MAX)
- return log_link_debug_errno(link, SYNTHETIC_ERRNO(ERANGE), "restart timeout (%s) too big.",
- FORMAT_TIMESPAN(restart_ms * 1000, MSEC_PER_SEC));
-
log_link_debug(link, "Setting restart = %s", FORMAT_TIMESPAN(restart_ms * 1000, MSEC_PER_SEC));
-
r = sd_netlink_message_append_u32(m, IFLA_CAN_RESTART_MS, restart_ms);
if (r < 0)
return log_link_debug_errno(link, r, "Could not append IFLA_CAN_RESTART_MS attribute: %m");
}
- if (link->network->can_fd_mode >= 0) {
- cm.mask |= CAN_CTRLMODE_FD;
- SET_FLAG(cm.flags, CAN_CTRLMODE_FD, link->network->can_fd_mode);
- log_link_debug(link, "Setting FD mode to '%s'.", yes_no(link->network->can_fd_mode));
- }
-
- if (link->network->can_non_iso >= 0) {
- cm.mask |= CAN_CTRLMODE_FD_NON_ISO;
- SET_FLAG(cm.flags, CAN_CTRLMODE_FD_NON_ISO, link->network->can_non_iso);
- log_link_debug(link, "Setting FD non-ISO mode to '%s'.", yes_no(link->network->can_non_iso));
- }
-
- if (link->network->can_triple_sampling >= 0) {
- cm.mask |= CAN_CTRLMODE_3_SAMPLES;
- SET_FLAG(cm.flags, CAN_CTRLMODE_3_SAMPLES, link->network->can_triple_sampling);
- log_link_debug(link, "Setting triple-sampling to '%s'.", yes_no(link->network->can_triple_sampling));
- }
-
- if (link->network->can_berr_reporting >= 0) {
- cm.mask |= CAN_CTRLMODE_BERR_REPORTING;
- SET_FLAG(cm.flags, CAN_CTRLMODE_BERR_REPORTING, link->network->can_berr_reporting);
- log_link_debug(link, "Setting bus error reporting to '%s'.", yes_no(link->network->can_berr_reporting));
- }
-
- if (link->network->can_listen_only >= 0) {
- cm.mask |= CAN_CTRLMODE_LISTENONLY;
- SET_FLAG(cm.flags, CAN_CTRLMODE_LISTENONLY, link->network->can_listen_only);
- log_link_debug(link, "Setting listen-only mode to '%s'.", yes_no(link->network->can_listen_only));
- }
+ if (link->network->can_control_mode_mask != 0) {
+ struct can_ctrlmode cm = {
+ .mask = link->network->can_control_mode_mask,
+ .flags = link->network->can_control_mode_flags,
+ };
- if (cm.mask != 0) {
r = sd_netlink_message_append_data(m, IFLA_CAN_CTRLMODE, &cm, sizeof(cm));
if (r < 0)
return log_link_debug_errno(link, r, "Could not append IFLA_CAN_CTRLMODE attribute: %m");
}
- if (link->network->can_termination >= 0) {
- log_link_debug(link, "Setting can-termination to '%s'.", yes_no(link->network->can_termination));
+ if (link->network->can_termination_set) {
+ log_link_debug(link, "Setting can-termination to '%u'.", link->network->can_termination);
- r = sd_netlink_message_append_u16(m, IFLA_CAN_TERMINATION,
- link->network->can_termination ? CAN_TERMINATION_OHM_VALUE : 0);
+ r = sd_netlink_message_append_u16(m, IFLA_CAN_TERMINATION, link->network->can_termination);
if (r < 0)
return log_link_debug_errno(link, r, "Could not append IFLA_CAN_TERMINATION attribute: %m");
}
return 0;
}
+
+int config_parse_can_bitrate(
+ const char* unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ uint32_t *br = data;
+ uint64_t sz;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = parse_size(rvalue, 1000, &sz);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse can bitrate '%s', ignoring: %m", rvalue);
+ return 0;
+ }
+
+ /* Linux uses __u32 for bitrates, so the value should not exceed that. */
+ if (sz <= 0 || sz > UINT32_MAX) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Bit rate out of permitted range 1...4294967295");
+ return 0;
+ }
+
+ *br = (uint32_t) sz;
+
+ return 0;
+}
+
+int config_parse_can_restart_usec(
+ const char* unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ usec_t usec, *restart_usec = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = parse_sec(rvalue, &usec);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse CAN restart sec '%s', ignoring: %m", rvalue);
+ return 0;
+ }
+
+ if (usec != USEC_INFINITY &&
+ DIV_ROUND_UP(usec, USEC_PER_MSEC) > UINT32_MAX) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "CAN RestartSec= must be in the range 0...%"PRIu32"ms, ignoring: %s", UINT32_MAX, rvalue);
+ return 0;
+ }
+
+ *restart_usec = usec;
+ return 0;
+}
+
+int config_parse_can_control_mode(
+ const char* unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Network *network = userdata;
+ uint32_t mask = ltype;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(userdata);
+ assert(mask != 0);
+
+ if (isempty(rvalue)) {
+ network->can_control_mode_mask &= ~mask;
+ network->can_control_mode_flags &= ~mask;
+ return 0;
+ }
+
+ r = parse_boolean(rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse CAN control mode '%s', ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ network->can_control_mode_mask |= mask;
+ SET_FLAG(network->can_control_mode_flags, mask, r);
+ return 0;
+}
+
+int config_parse_can_termination(
+ const char* unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Network *network = userdata;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (isempty(rvalue)) {
+ network->can_termination_set = false;
+ return 0;
+ }
+
+ /* Note that 0 termination ohm value means no termination resistor, and there is no conflict
+ * between parse_boolean() and safe_atou16() when Termination=0. However, Termination=1 must be
+ * treated as 1 ohm, instead of true (and then the default ohm value). So, we need to parse the
+ * string with safe_atou16() at first. */
+
+ r = safe_atou16(rvalue, &network->can_termination);
+ if (r < 0) {
+ r = parse_boolean(rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to parse CAN termination value, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ network->can_termination = r ? CAN_TERMINATION_DEFAULT_OHM_VALUE : 0;
+ }
+
+ network->can_termination_set = true;
+ return 0;
+}
projects / thirdparty / systemd.git / blobdiff