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// SPDX-License-Identifier: GPL-2.0+
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#include <errno.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <linux/dcbnl.h>
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#include "dcb.h"
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#include "utils.h"
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static void dcb_buffer_help_set(void)
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{
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fprintf(stderr,
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"Usage: dcb buffer set dev STRING\n"
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" [ prio-buffer PRIO-MAP ]\n"
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" [ buffer-size SIZE-MAP ]\n"
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"\n"
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" where PRIO-MAP := [ PRIO-MAP ] PRIO-MAPPING\n"
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" PRIO-MAPPING := { all | PRIO }:BUFFER\n"
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" SIZE-MAP := [ SIZE-MAP ] SIZE-MAPPING\n"
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" SIZE-MAPPING := { all | BUFFER }:INTEGER\n"
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" PRIO := { 0 .. 7 }\n"
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" BUFFER := { 0 .. 7 }\n"
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"\n"
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);
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}
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static void dcb_buffer_help_show(void)
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{
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fprintf(stderr,
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"Usage: dcb buffer show dev STRING\n"
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" [ prio-buffer ] [ buffer-size ] [ total-size ]\n"
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"\n"
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);
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}
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static void dcb_buffer_help(void)
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{
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fprintf(stderr,
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"Usage: dcb buffer help\n"
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"\n"
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);
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dcb_buffer_help_show();
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dcb_buffer_help_set();
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}
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static int dcb_buffer_parse_mapping_prio_buffer(__u32 key, char *value, void *data)
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{
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struct dcbnl_buffer *buffer = data;
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__u8 buf;
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if (get_u8(&buf, value, 0))
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return -EINVAL;
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return dcb_parse_mapping("PRIO", key, IEEE_8021Q_MAX_PRIORITIES - 1,
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"BUFFER", buf, DCBX_MAX_BUFFERS - 1,
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dcb_set_u8, buffer->prio2buffer);
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}
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static int dcb_buffer_parse_mapping_buffer_size(__u32 key, char *value, void *data)
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{
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struct dcbnl_buffer *buffer = data;
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unsigned int size;
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if (get_size(&size, value)) {
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fprintf(stderr, "%d:%s: Illegal value for buffer size\n", key, value);
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return -EINVAL;
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}
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return dcb_parse_mapping("BUFFER", key, DCBX_MAX_BUFFERS - 1,
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"INTEGER", size, -1,
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dcb_set_u32, buffer->buffer_size);
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}
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static void dcb_buffer_print_total_size(const struct dcbnl_buffer *buffer)
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{
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print_size(PRINT_ANY, "total_size", "total-size %s ", buffer->total_size);
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}
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static void dcb_buffer_print_prio_buffer(const struct dcbnl_buffer *buffer)
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{
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dcb_print_named_array("prio_buffer", "prio-buffer",
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buffer->prio2buffer, ARRAY_SIZE(buffer->prio2buffer),
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dcb_print_array_u8);
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}
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static void dcb_buffer_print_buffer_size(const struct dcbnl_buffer *buffer)
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{
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size_t size = ARRAY_SIZE(buffer->buffer_size);
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SPRINT_BUF(b);
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size_t i;
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open_json_array(PRINT_JSON, "buffer_size");
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print_string(PRINT_FP, NULL, "buffer-size ", NULL);
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for (i = 0; i < size; i++) {
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snprintf(b, sizeof(b), "%zd:%%s ", i);
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print_size(PRINT_ANY, NULL, b, buffer->buffer_size[i]);
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}
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close_json_array(PRINT_JSON, "buffer_size");
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}
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static void dcb_buffer_print(const struct dcbnl_buffer *buffer)
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{
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dcb_buffer_print_prio_buffer(buffer);
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print_nl();
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dcb_buffer_print_buffer_size(buffer);
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print_nl();
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dcb_buffer_print_total_size(buffer);
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print_nl();
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}
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static int dcb_buffer_get(struct dcb *dcb, const char *dev, struct dcbnl_buffer *buffer)
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{
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return dcb_get_attribute(dcb, dev, DCB_ATTR_DCB_BUFFER, buffer, sizeof(*buffer));
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}
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static int dcb_buffer_set(struct dcb *dcb, const char *dev, const struct dcbnl_buffer *buffer)
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{
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return dcb_set_attribute(dcb, dev, DCB_ATTR_DCB_BUFFER, buffer, sizeof(*buffer));
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}
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static int dcb_cmd_buffer_set(struct dcb *dcb, const char *dev, int argc, char **argv)
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{
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struct dcbnl_buffer buffer;
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int ret;
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if (!argc) {
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dcb_buffer_help_set();
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return 0;
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}
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ret = dcb_buffer_get(dcb, dev, &buffer);
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if (ret)
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return ret;
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do {
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if (matches(*argv, "help") == 0) {
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dcb_buffer_help_set();
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return 0;
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} else if (matches(*argv, "prio-buffer") == 0) {
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NEXT_ARG();
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ret = parse_mapping(&argc, &argv, true,
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&dcb_buffer_parse_mapping_prio_buffer, &buffer);
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if (ret) {
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fprintf(stderr, "Invalid priority mapping %s\n", *argv);
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return ret;
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}
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continue;
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} else if (matches(*argv, "buffer-size") == 0) {
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NEXT_ARG();
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ret = parse_mapping(&argc, &argv, true,
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&dcb_buffer_parse_mapping_buffer_size, &buffer);
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if (ret) {
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fprintf(stderr, "Invalid buffer size mapping %s\n", *argv);
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return ret;
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}
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continue;
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} else {
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fprintf(stderr, "What is \"%s\"?\n", *argv);
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dcb_buffer_help_set();
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return -EINVAL;
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}
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NEXT_ARG_FWD();
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} while (argc > 0);
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return dcb_buffer_set(dcb, dev, &buffer);
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}
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static int dcb_cmd_buffer_show(struct dcb *dcb, const char *dev, int argc, char **argv)
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{
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struct dcbnl_buffer buffer;
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int ret;
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ret = dcb_buffer_get(dcb, dev, &buffer);
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if (ret)
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return ret;
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open_json_object(NULL);
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if (!argc) {
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dcb_buffer_print(&buffer);
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goto out;
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}
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do {
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if (matches(*argv, "help") == 0) {
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dcb_buffer_help_show();
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return 0;
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} else if (matches(*argv, "prio-buffer") == 0) {
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dcb_buffer_print_prio_buffer(&buffer);
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print_nl();
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} else if (matches(*argv, "buffer-size") == 0) {
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dcb_buffer_print_buffer_size(&buffer);
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print_nl();
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} else if (matches(*argv, "total-size") == 0) {
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dcb_buffer_print_total_size(&buffer);
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print_nl();
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} else {
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fprintf(stderr, "What is \"%s\"?\n", *argv);
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dcb_buffer_help_show();
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return -EINVAL;
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}
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NEXT_ARG_FWD();
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} while (argc > 0);
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out:
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close_json_object();
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return 0;
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}
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int dcb_cmd_buffer(struct dcb *dcb, int argc, char **argv)
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{
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if (!argc || matches(*argv, "help") == 0) {
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dcb_buffer_help();
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return 0;
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} else if (matches(*argv, "show") == 0) {
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NEXT_ARG_FWD();
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return dcb_cmd_parse_dev(dcb, argc, argv,
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dcb_cmd_buffer_show, dcb_buffer_help_show);
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} else if (matches(*argv, "set") == 0) {
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NEXT_ARG_FWD();
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return dcb_cmd_parse_dev(dcb, argc, argv,
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dcb_cmd_buffer_set, dcb_buffer_help_set);
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} else {
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fprintf(stderr, "What is \"%s\"?\n", *argv);
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dcb_buffer_help();
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return -EINVAL;
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}
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}
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