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// 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_buffer_help_set(void)
{
fprintf(stderr,
"Usage: dcb buffer set dev STRING\n"
" [ prio-buffer PRIO-MAP ]\n"
" [ buffer-size SIZE-MAP ]\n"
"\n"
" where PRIO-MAP := [ PRIO-MAP ] PRIO-MAPPING\n"
" PRIO-MAPPING := { all | PRIO }:BUFFER\n"
" SIZE-MAP := [ SIZE-MAP ] SIZE-MAPPING\n"
" SIZE-MAPPING := { all | BUFFER }:INTEGER\n"
" PRIO := { 0 .. 7 }\n"
" BUFFER := { 0 .. 7 }\n"
"\n"
);
}
static void dcb_buffer_help_show(void)
{
fprintf(stderr,
"Usage: dcb buffer show dev STRING\n"
" [ prio-buffer ] [ buffer-size ] [ total-size ]\n"
"\n"
);
}
static void dcb_buffer_help(void)
{
fprintf(stderr,
"Usage: dcb buffer help\n"
"\n"
);
dcb_buffer_help_show();
dcb_buffer_help_set();
}
static int dcb_buffer_parse_mapping_prio_buffer(__u32 key, char *value, void *data)
{
struct dcbnl_buffer *buffer = data;
__u8 buf;
if (get_u8(&buf, value, 0))
return -EINVAL;
return dcb_parse_mapping("PRIO", key, IEEE_8021Q_MAX_PRIORITIES - 1,
"BUFFER", buf, DCBX_MAX_BUFFERS - 1,
dcb_set_u8, buffer->prio2buffer);
}
static int dcb_buffer_parse_mapping_buffer_size(__u32 key, char *value, void *data)
{
struct dcbnl_buffer *buffer = data;
unsigned int size;
if (get_size(&size, value)) {
fprintf(stderr, "%d:%s: Illegal value for buffer size\n", key, value);
return -EINVAL;
}
return dcb_parse_mapping("BUFFER", key, DCBX_MAX_BUFFERS - 1,
"INTEGER", size, -1,
dcb_set_u32, buffer->buffer_size);
}
static void dcb_buffer_print_total_size(const struct dcbnl_buffer *buffer)
{
print_size(PRINT_ANY, "total_size", "total-size %s ", buffer->total_size);
}
static void dcb_buffer_print_prio_buffer(const struct dcbnl_buffer *buffer)
{
dcb_print_named_array("prio_buffer", "prio-buffer",
buffer->prio2buffer, ARRAY_SIZE(buffer->prio2buffer),
dcb_print_array_u8);
}
static void dcb_buffer_print_buffer_size(const struct dcbnl_buffer *buffer)
{
size_t size = ARRAY_SIZE(buffer->buffer_size);
SPRINT_BUF(b);
size_t i;
open_json_array(PRINT_JSON, "buffer_size");
print_string(PRINT_FP, NULL, "buffer-size ", NULL);
for (i = 0; i < size; i++) {
snprintf(b, sizeof(b), "%zd:%%s ", i);
print_size(PRINT_ANY, NULL, b, buffer->buffer_size[i]);
}
close_json_array(PRINT_JSON, "buffer_size");
}
static void dcb_buffer_print(const struct dcbnl_buffer *buffer)
{
dcb_buffer_print_prio_buffer(buffer);
print_nl();
dcb_buffer_print_buffer_size(buffer);
print_nl();
dcb_buffer_print_total_size(buffer);
print_nl();
}
static int dcb_buffer_get(struct dcb *dcb, const char *dev, struct dcbnl_buffer *buffer)
{
return dcb_get_attribute(dcb, dev, DCB_ATTR_DCB_BUFFER, buffer, sizeof(*buffer));
}
static int dcb_buffer_set(struct dcb *dcb, const char *dev, const struct dcbnl_buffer *buffer)
{
return dcb_set_attribute(dcb, dev, DCB_ATTR_DCB_BUFFER, buffer, sizeof(*buffer));
}
static int dcb_cmd_buffer_set(struct dcb *dcb, const char *dev, int argc, char **argv)
{
struct dcbnl_buffer buffer;
int ret;
if (!argc) {
dcb_buffer_help_set();
return 0;
}
ret = dcb_buffer_get(dcb, dev, &buffer);
if (ret)
return ret;
do {
if (matches(*argv, "help") == 0) {
dcb_buffer_help_set();
return 0;
} else if (matches(*argv, "prio-buffer") == 0) {
NEXT_ARG();
ret = parse_mapping(&argc, &argv, true,
&dcb_buffer_parse_mapping_prio_buffer, &buffer);
if (ret) {
fprintf(stderr, "Invalid priority mapping %s\n", *argv);
return ret;
}
continue;
} else if (matches(*argv, "buffer-size") == 0) {
NEXT_ARG();
ret = parse_mapping(&argc, &argv, true,
&dcb_buffer_parse_mapping_buffer_size, &buffer);
if (ret) {
fprintf(stderr, "Invalid buffer size mapping %s\n", *argv);
return ret;
}
continue;
} else {
fprintf(stderr, "What is \"%s\"?\n", *argv);
dcb_buffer_help_set();
return -EINVAL;
}
NEXT_ARG_FWD();
} while (argc > 0);
return dcb_buffer_set(dcb, dev, &buffer);
}
static int dcb_cmd_buffer_show(struct dcb *dcb, const char *dev, int argc, char **argv)
{
struct dcbnl_buffer buffer;
int ret;
ret = dcb_buffer_get(dcb, dev, &buffer);
if (ret)
return ret;
open_json_object(NULL);
if (!argc) {
dcb_buffer_print(&buffer);
goto out;
}
do {
if (matches(*argv, "help") == 0) {
dcb_buffer_help_show();
return 0;
} else if (matches(*argv, "prio-buffer") == 0) {
dcb_buffer_print_prio_buffer(&buffer);
print_nl();
} else if (matches(*argv, "buffer-size") == 0) {
dcb_buffer_print_buffer_size(&buffer);
print_nl();
} else if (matches(*argv, "total-size") == 0) {
dcb_buffer_print_total_size(&buffer);
print_nl();
} else {
fprintf(stderr, "What is \"%s\"?\n", *argv);
dcb_buffer_help_show();
return -EINVAL;
}
NEXT_ARG_FWD();
} while (argc > 0);
out:
close_json_object();
return 0;
}
int dcb_cmd_buffer(struct dcb *dcb, int argc, char **argv)
{
if (!argc || matches(*argv, "help") == 0) {
dcb_buffer_help();
return 0;
} else if (matches(*argv, "show") == 0) {
NEXT_ARG_FWD();
return dcb_cmd_parse_dev(dcb, argc, argv,
dcb_cmd_buffer_show, dcb_buffer_help_show);
} else if (matches(*argv, "set") == 0) {
NEXT_ARG_FWD();
return dcb_cmd_parse_dev(dcb, argc, argv,
dcb_cmd_buffer_set, dcb_buffer_help_set);
} else {
fprintf(stderr, "What is \"%s\"?\n", *argv);
dcb_buffer_help();
return -EINVAL;
}
}
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