diff options
Diffstat (limited to '')
| -rw-r--r-- | dcb/dcb_maxrate.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/dcb/dcb_maxrate.c b/dcb/dcb_maxrate.c new file mode 100644 index 0000000..1538c6d --- /dev/null +++ b/dcb/dcb_maxrate.c @@ -0,0 +1,182 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <errno.h> +#include <inttypes.h> +#include <stdio.h> +#include <linux/dcbnl.h> + +#include "dcb.h" +#include "utils.h" + +static void dcb_maxrate_help_set(void) +{ + fprintf(stderr, + "Usage: dcb maxrate set dev STRING\n" + " [ tc-maxrate RATE-MAP ]\n" + "\n" + " where RATE-MAP := [ RATE-MAP ] RATE-MAPPING\n" + " RATE-MAPPING := { all | TC }:RATE\n" + " TC := { 0 .. 7 }\n" + "\n" + ); +} + +static void dcb_maxrate_help_show(void) +{ + fprintf(stderr, + "Usage: dcb [ -i ] maxrate show dev STRING\n" + " [ tc-maxrate ]\n" + "\n" + ); +} + +static void dcb_maxrate_help(void) +{ + fprintf(stderr, + "Usage: dcb maxrate help\n" + "\n" + ); + dcb_maxrate_help_show(); + dcb_maxrate_help_set(); +} + +static int dcb_maxrate_parse_mapping_tc_maxrate(__u32 key, char *value, void *data) +{ + __u64 rate; + + if (get_rate64(&rate, value)) + return -EINVAL; + + return dcb_parse_mapping("TC", key, IEEE_8021QAZ_MAX_TCS - 1, + "RATE", rate, -1, + dcb_set_u64, data); +} + +static void dcb_maxrate_print_tc_maxrate(struct dcb *dcb, const struct ieee_maxrate *maxrate) +{ + size_t size = ARRAY_SIZE(maxrate->tc_maxrate); + SPRINT_BUF(b); + size_t i; + + open_json_array(PRINT_JSON, "tc_maxrate"); + print_string(PRINT_FP, NULL, "tc-maxrate ", NULL); + + for (i = 0; i < size; i++) { + snprintf(b, sizeof(b), "%zd:%%s ", i); + print_rate(dcb->use_iec, PRINT_ANY, NULL, b, maxrate->tc_maxrate[i]); + } + + close_json_array(PRINT_JSON, "tc_maxrate"); +} + +static void dcb_maxrate_print(struct dcb *dcb, const struct ieee_maxrate *maxrate) +{ + dcb_maxrate_print_tc_maxrate(dcb, maxrate); + print_nl(); +} + +static int dcb_maxrate_get(struct dcb *dcb, const char *dev, struct ieee_maxrate *maxrate) +{ + return dcb_get_attribute(dcb, dev, DCB_ATTR_IEEE_MAXRATE, maxrate, sizeof(*maxrate)); +} + +static int dcb_maxrate_set(struct dcb *dcb, const char *dev, const struct ieee_maxrate *maxrate) +{ + return dcb_set_attribute(dcb, dev, DCB_ATTR_IEEE_MAXRATE, maxrate, sizeof(*maxrate)); +} + +static int dcb_cmd_maxrate_set(struct dcb *dcb, const char *dev, int argc, char **argv) +{ + struct ieee_maxrate maxrate; + int ret; + + if (!argc) { + dcb_maxrate_help_set(); + return 0; + } + + ret = dcb_maxrate_get(dcb, dev, &maxrate); + if (ret) + return ret; + + do { + if (matches(*argv, "help") == 0) { + dcb_maxrate_help_set(); + return 0; + } else if (matches(*argv, "tc-maxrate") == 0) { + NEXT_ARG(); + ret = parse_mapping(&argc, &argv, true, + &dcb_maxrate_parse_mapping_tc_maxrate, &maxrate); + if (ret) { + fprintf(stderr, "Invalid mapping %s\n", *argv); + return ret; + } + continue; + } else { + fprintf(stderr, "What is \"%s\"?\n", *argv); + dcb_maxrate_help_set(); + return -EINVAL; + } + + NEXT_ARG_FWD(); + } while (argc > 0); + + return dcb_maxrate_set(dcb, dev, &maxrate); +} + +static int dcb_cmd_maxrate_show(struct dcb *dcb, const char *dev, int argc, char **argv) +{ + struct ieee_maxrate maxrate; + int ret; + + ret = dcb_maxrate_get(dcb, dev, &maxrate); + if (ret) + return ret; + + open_json_object(NULL); + + if (!argc) { + dcb_maxrate_print(dcb, &maxrate); + goto out; + } + + do { + if (matches(*argv, "help") == 0) { + dcb_maxrate_help_show(); + return 0; + } else if (matches(*argv, "tc-maxrate") == 0) { + dcb_maxrate_print_tc_maxrate(dcb, &maxrate); + print_nl(); + } else { + fprintf(stderr, "What is \"%s\"?\n", *argv); + dcb_maxrate_help_show(); + return -EINVAL; + } + + NEXT_ARG_FWD(); + } while (argc > 0); + +out: + close_json_object(); + return 0; +} + +int dcb_cmd_maxrate(struct dcb *dcb, int argc, char **argv) +{ + if (!argc || matches(*argv, "help") == 0) { + dcb_maxrate_help(); + return 0; + } else if (matches(*argv, "show") == 0) { + NEXT_ARG_FWD(); + return dcb_cmd_parse_dev(dcb, argc, argv, + dcb_cmd_maxrate_show, dcb_maxrate_help_show); + } else if (matches(*argv, "set") == 0) { + NEXT_ARG_FWD(); + return dcb_cmd_parse_dev(dcb, argc, argv, + dcb_cmd_maxrate_set, dcb_maxrate_help_set); + } else { + fprintf(stderr, "What is \"%s\"?\n", *argv); + dcb_maxrate_help(); + return -EINVAL; + } +} |