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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 14:18:53 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 14:18:53 +0000
commita0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67 (patch)
tree8feaf1a1932871b139b3b30be4c09c66489918be /dcb/dcb_app.c
parentInitial commit. (diff)
downloadiproute2-a0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67.tar.xz
iproute2-a0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67.zip
Adding upstream version 6.1.0.upstream/6.1.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--dcb/dcb_app.c797
1 files changed, 797 insertions, 0 deletions
diff --git a/dcb/dcb_app.c b/dcb/dcb_app.c
new file mode 100644
index 0000000..dad3455
--- /dev/null
+++ b/dcb/dcb_app.c
@@ -0,0 +1,797 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <errno.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <libmnl/libmnl.h>
+#include <linux/dcbnl.h>
+
+#include "dcb.h"
+#include "utils.h"
+#include "rt_names.h"
+
+static void dcb_app_help_add(void)
+{
+ fprintf(stderr,
+ "Usage: dcb app { add | del | replace } dev STRING\n"
+ " [ default-prio PRIO ]\n"
+ " [ ethtype-prio ET:PRIO ]\n"
+ " [ stream-port-prio PORT:PRIO ]\n"
+ " [ dgram-port-prio PORT:PRIO ]\n"
+ " [ port-prio PORT:PRIO ]\n"
+ " [ dscp-prio INTEGER:PRIO ]\n"
+ "\n"
+ " where PRIO := { 0 .. 7 }\n"
+ " ET := { 0x600 .. 0xffff }\n"
+ " PORT := { 1 .. 65535 }\n"
+ " DSCP := { 0 .. 63 }\n"
+ "\n"
+ );
+}
+
+static void dcb_app_help_show_flush(void)
+{
+ fprintf(stderr,
+ "Usage: dcb app { show | flush } dev STRING\n"
+ " [ default-prio ]\n"
+ " [ ethtype-prio ]\n"
+ " [ stream-port-prio ]\n"
+ " [ dgram-port-prio ]\n"
+ " [ port-prio ]\n"
+ " [ dscp-prio ]\n"
+ "\n"
+ );
+}
+
+static void dcb_app_help(void)
+{
+ fprintf(stderr,
+ "Usage: dcb app help\n"
+ "\n"
+ );
+ dcb_app_help_show_flush();
+ dcb_app_help_add();
+}
+
+struct dcb_app_table {
+ struct dcb_app *apps;
+ size_t n_apps;
+};
+
+static void dcb_app_table_fini(struct dcb_app_table *tab)
+{
+ free(tab->apps);
+}
+
+static int dcb_app_table_push(struct dcb_app_table *tab, struct dcb_app *app)
+{
+ struct dcb_app *apps = realloc(tab->apps, (tab->n_apps + 1) * sizeof(*tab->apps));
+
+ if (apps == NULL) {
+ perror("Cannot allocate APP table");
+ return -ENOMEM;
+ }
+
+ tab->apps = apps;
+ tab->apps[tab->n_apps++] = *app;
+ return 0;
+}
+
+static void dcb_app_table_remove_existing(struct dcb_app_table *a,
+ const struct dcb_app_table *b)
+{
+ size_t ia, ja;
+ size_t ib;
+
+ for (ia = 0, ja = 0; ia < a->n_apps; ia++) {
+ struct dcb_app *aa = &a->apps[ia];
+ bool found = false;
+
+ for (ib = 0; ib < b->n_apps; ib++) {
+ const struct dcb_app *ab = &b->apps[ib];
+
+ if (aa->selector == ab->selector &&
+ aa->protocol == ab->protocol &&
+ aa->priority == ab->priority) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found)
+ a->apps[ja++] = *aa;
+ }
+
+ a->n_apps = ja;
+}
+
+static void dcb_app_table_remove_replaced(struct dcb_app_table *a,
+ const struct dcb_app_table *b)
+{
+ size_t ia, ja;
+ size_t ib;
+
+ for (ia = 0, ja = 0; ia < a->n_apps; ia++) {
+ struct dcb_app *aa = &a->apps[ia];
+ bool present = false;
+ bool found = false;
+
+ for (ib = 0; ib < b->n_apps; ib++) {
+ const struct dcb_app *ab = &b->apps[ib];
+
+ if (aa->selector == ab->selector &&
+ aa->protocol == ab->protocol)
+ present = true;
+ else
+ continue;
+
+ if (aa->priority == ab->priority) {
+ found = true;
+ break;
+ }
+ }
+
+ /* Entries that remain in A will be removed, so keep in the
+ * table only APP entries whose sel/pid is mentioned in B,
+ * but that do not have the full sel/pid/prio match.
+ */
+ if (present && !found)
+ a->apps[ja++] = *aa;
+ }
+
+ a->n_apps = ja;
+}
+
+static int dcb_app_table_copy(struct dcb_app_table *a,
+ const struct dcb_app_table *b)
+{
+ size_t i;
+ int ret;
+
+ for (i = 0; i < b->n_apps; i++) {
+ ret = dcb_app_table_push(a, &b->apps[i]);
+ if (ret != 0)
+ return ret;
+ }
+ return 0;
+}
+
+static int dcb_app_cmp(const struct dcb_app *a, const struct dcb_app *b)
+{
+ if (a->protocol < b->protocol)
+ return -1;
+ if (a->protocol > b->protocol)
+ return 1;
+ return a->priority - b->priority;
+}
+
+static int dcb_app_cmp_cb(const void *a, const void *b)
+{
+ return dcb_app_cmp(a, b);
+}
+
+static void dcb_app_table_sort(struct dcb_app_table *tab)
+{
+ qsort(tab->apps, tab->n_apps, sizeof(*tab->apps), dcb_app_cmp_cb);
+}
+
+struct dcb_app_parse_mapping {
+ __u8 selector;
+ struct dcb_app_table *tab;
+ int err;
+};
+
+static void dcb_app_parse_mapping_cb(__u32 key, __u64 value, void *data)
+{
+ struct dcb_app_parse_mapping *pm = data;
+ struct dcb_app app = {
+ .selector = pm->selector,
+ .priority = value,
+ .protocol = key,
+ };
+
+ if (pm->err)
+ return;
+
+ pm->err = dcb_app_table_push(pm->tab, &app);
+}
+
+static int dcb_app_parse_mapping_ethtype_prio(__u32 key, char *value, void *data)
+{
+ __u8 prio;
+
+ if (key < 0x600) {
+ fprintf(stderr, "Protocol IDs < 0x600 are reserved for EtherType\n");
+ return -EINVAL;
+ }
+
+ if (get_u8(&prio, value, 0))
+ return -EINVAL;
+
+ return dcb_parse_mapping("ETHTYPE", key, 0xffff,
+ "PRIO", prio, IEEE_8021QAZ_MAX_TCS - 1,
+ dcb_app_parse_mapping_cb, data);
+}
+
+static int dcb_app_parse_dscp(__u32 *key, const char *arg)
+{
+ if (parse_mapping_num_all(key, arg) == 0)
+ return 0;
+
+ if (rtnl_dsfield_a2n(key, arg) != 0)
+ return -1;
+
+ if (*key & 0x03) {
+ fprintf(stderr, "The values `%s' uses non-DSCP bits.\n", arg);
+ return -1;
+ }
+
+ /* Unshift the value to convert it from dsfield to DSCP. */
+ *key >>= 2;
+ return 0;
+}
+
+static int dcb_app_parse_mapping_dscp_prio(__u32 key, char *value, void *data)
+{
+ __u8 prio;
+
+ if (get_u8(&prio, value, 0))
+ return -EINVAL;
+
+ return dcb_parse_mapping("DSCP", key, 63,
+ "PRIO", prio, IEEE_8021QAZ_MAX_TCS - 1,
+ dcb_app_parse_mapping_cb, data);
+}
+
+static int dcb_app_parse_mapping_port_prio(__u32 key, char *value, void *data)
+{
+ __u8 prio;
+
+ if (key == 0) {
+ fprintf(stderr, "Port ID of 0 is invalid\n");
+ return -EINVAL;
+ }
+
+ if (get_u8(&prio, value, 0))
+ return -EINVAL;
+
+ return dcb_parse_mapping("PORT", key, 0xffff,
+ "PRIO", prio, IEEE_8021QAZ_MAX_TCS - 1,
+ dcb_app_parse_mapping_cb, data);
+}
+
+static int dcb_app_parse_default_prio(int *argcp, char ***argvp, struct dcb_app_table *tab)
+{
+ int argc = *argcp;
+ char **argv = *argvp;
+ int ret = 0;
+
+ while (argc > 0) {
+ struct dcb_app app;
+ __u8 prio;
+
+ if (get_u8(&prio, *argv, 0)) {
+ ret = 1;
+ break;
+ }
+
+ app = (struct dcb_app){
+ .selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE,
+ .protocol = 0,
+ .priority = prio,
+ };
+ ret = dcb_app_table_push(tab, &app);
+ if (ret != 0)
+ break;
+
+ argc--, argv++;
+ }
+
+ *argcp = argc;
+ *argvp = argv;
+ return ret;
+}
+
+static bool dcb_app_is_ethtype(const struct dcb_app *app)
+{
+ return app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
+ app->protocol != 0;
+}
+
+static bool dcb_app_is_default(const struct dcb_app *app)
+{
+ return app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
+ app->protocol == 0;
+}
+
+static bool dcb_app_is_dscp(const struct dcb_app *app)
+{
+ return app->selector == IEEE_8021QAZ_APP_SEL_DSCP;
+}
+
+static bool dcb_app_is_stream_port(const struct dcb_app *app)
+{
+ return app->selector == IEEE_8021QAZ_APP_SEL_STREAM;
+}
+
+static bool dcb_app_is_dgram_port(const struct dcb_app *app)
+{
+ return app->selector == IEEE_8021QAZ_APP_SEL_DGRAM;
+}
+
+static bool dcb_app_is_port(const struct dcb_app *app)
+{
+ return app->selector == IEEE_8021QAZ_APP_SEL_ANY;
+}
+
+static int dcb_app_print_key_dec(__u16 protocol)
+{
+ return print_uint(PRINT_ANY, NULL, "%d:", protocol);
+}
+
+static int dcb_app_print_key_hex(__u16 protocol)
+{
+ return print_uint(PRINT_ANY, NULL, "%x:", protocol);
+}
+
+static int dcb_app_print_key_dscp(__u16 protocol)
+{
+ const char *name = rtnl_dsfield_get_name(protocol << 2);
+
+
+ if (!is_json_context() && name != NULL)
+ return print_string(PRINT_FP, NULL, "%s:", name);
+ return print_uint(PRINT_ANY, NULL, "%d:", protocol);
+}
+
+static void dcb_app_print_filtered(const struct dcb_app_table *tab,
+ bool (*filter)(const struct dcb_app *),
+ int (*print_key)(__u16 protocol),
+ const char *json_name,
+ const char *fp_name)
+{
+ bool first = true;
+ size_t i;
+
+ for (i = 0; i < tab->n_apps; i++) {
+ struct dcb_app *app = &tab->apps[i];
+
+ if (!filter(app))
+ continue;
+ if (first) {
+ open_json_array(PRINT_JSON, json_name);
+ print_string(PRINT_FP, NULL, "%s ", fp_name);
+ first = false;
+ }
+
+ open_json_array(PRINT_JSON, NULL);
+ print_key(app->protocol);
+ print_uint(PRINT_ANY, NULL, "%d ", app->priority);
+ close_json_array(PRINT_JSON, NULL);
+ }
+
+ if (!first) {
+ close_json_array(PRINT_JSON, json_name);
+ print_nl();
+ }
+}
+
+static void dcb_app_print_ethtype_prio(const struct dcb_app_table *tab)
+{
+ dcb_app_print_filtered(tab, dcb_app_is_ethtype, dcb_app_print_key_hex,
+ "ethtype_prio", "ethtype-prio");
+}
+
+static void dcb_app_print_dscp_prio(const struct dcb *dcb,
+ const struct dcb_app_table *tab)
+{
+ dcb_app_print_filtered(tab, dcb_app_is_dscp,
+ dcb->numeric ? dcb_app_print_key_dec
+ : dcb_app_print_key_dscp,
+ "dscp_prio", "dscp-prio");
+}
+
+static void dcb_app_print_stream_port_prio(const struct dcb_app_table *tab)
+{
+ dcb_app_print_filtered(tab, dcb_app_is_stream_port, dcb_app_print_key_dec,
+ "stream_port_prio", "stream-port-prio");
+}
+
+static void dcb_app_print_dgram_port_prio(const struct dcb_app_table *tab)
+{
+ dcb_app_print_filtered(tab, dcb_app_is_dgram_port, dcb_app_print_key_dec,
+ "dgram_port_prio", "dgram-port-prio");
+}
+
+static void dcb_app_print_port_prio(const struct dcb_app_table *tab)
+{
+ dcb_app_print_filtered(tab, dcb_app_is_port, dcb_app_print_key_dec,
+ "port_prio", "port-prio");
+}
+
+static void dcb_app_print_default_prio(const struct dcb_app_table *tab)
+{
+ bool first = true;
+ size_t i;
+
+ for (i = 0; i < tab->n_apps; i++) {
+ if (!dcb_app_is_default(&tab->apps[i]))
+ continue;
+ if (first) {
+ open_json_array(PRINT_JSON, "default_prio");
+ print_string(PRINT_FP, NULL, "default-prio ", NULL);
+ first = false;
+ }
+ print_uint(PRINT_ANY, NULL, "%d ", tab->apps[i].priority);
+ }
+
+ if (!first) {
+ close_json_array(PRINT_JSON, "default_prio");
+ print_nl();
+ }
+}
+
+static void dcb_app_print(const struct dcb *dcb, const struct dcb_app_table *tab)
+{
+ dcb_app_print_ethtype_prio(tab);
+ dcb_app_print_default_prio(tab);
+ dcb_app_print_dscp_prio(dcb, tab);
+ dcb_app_print_stream_port_prio(tab);
+ dcb_app_print_dgram_port_prio(tab);
+ dcb_app_print_port_prio(tab);
+}
+
+static int dcb_app_get_table_attr_cb(const struct nlattr *attr, void *data)
+{
+ struct dcb_app_table *tab = data;
+ struct dcb_app *app;
+ int ret;
+
+ if (mnl_attr_get_type(attr) != DCB_ATTR_IEEE_APP) {
+ fprintf(stderr, "Unknown attribute in DCB_ATTR_IEEE_APP_TABLE: %d\n",
+ mnl_attr_get_type(attr));
+ return MNL_CB_OK;
+ }
+ if (mnl_attr_get_payload_len(attr) < sizeof(struct dcb_app)) {
+ fprintf(stderr, "DCB_ATTR_IEEE_APP payload expected to have size %zd, not %d\n",
+ sizeof(struct dcb_app), mnl_attr_get_payload_len(attr));
+ return MNL_CB_OK;
+ }
+
+ app = mnl_attr_get_payload(attr);
+ ret = dcb_app_table_push(tab, app);
+ if (ret != 0)
+ return MNL_CB_ERROR;
+
+ return MNL_CB_OK;
+}
+
+static int dcb_app_get(struct dcb *dcb, const char *dev, struct dcb_app_table *tab)
+{
+ uint16_t payload_len;
+ void *payload;
+ int ret;
+
+ ret = dcb_get_attribute_va(dcb, dev, DCB_ATTR_IEEE_APP_TABLE, &payload, &payload_len);
+ if (ret != 0)
+ return ret;
+
+ ret = mnl_attr_parse_payload(payload, payload_len, dcb_app_get_table_attr_cb, tab);
+ if (ret != MNL_CB_OK)
+ return -EINVAL;
+
+ return 0;
+}
+
+struct dcb_app_add_del {
+ const struct dcb_app_table *tab;
+ bool (*filter)(const struct dcb_app *app);
+};
+
+static int dcb_app_add_del_cb(struct dcb *dcb, struct nlmsghdr *nlh, void *data)
+{
+ struct dcb_app_add_del *add_del = data;
+ struct nlattr *nest;
+ size_t i;
+
+ nest = mnl_attr_nest_start(nlh, DCB_ATTR_IEEE_APP_TABLE);
+
+ for (i = 0; i < add_del->tab->n_apps; i++) {
+ const struct dcb_app *app = &add_del->tab->apps[i];
+
+ if (add_del->filter == NULL || add_del->filter(app))
+ mnl_attr_put(nlh, DCB_ATTR_IEEE_APP, sizeof(*app), app);
+ }
+
+ mnl_attr_nest_end(nlh, nest);
+ return 0;
+}
+
+static int dcb_app_add_del(struct dcb *dcb, const char *dev, int command,
+ const struct dcb_app_table *tab,
+ bool (*filter)(const struct dcb_app *))
+{
+ struct dcb_app_add_del add_del = {
+ .tab = tab,
+ .filter = filter,
+ };
+
+ if (tab->n_apps == 0)
+ return 0;
+
+ return dcb_set_attribute_va(dcb, command, dev, dcb_app_add_del_cb, &add_del);
+}
+
+static int dcb_cmd_app_parse_add_del(struct dcb *dcb, const char *dev,
+ int argc, char **argv, struct dcb_app_table *tab)
+{
+ struct dcb_app_parse_mapping pm = {
+ .tab = tab,
+ };
+ int ret;
+
+ if (!argc) {
+ dcb_app_help_add();
+ return 0;
+ }
+
+ do {
+ if (matches(*argv, "help") == 0) {
+ dcb_app_help_add();
+ return 0;
+ } else if (matches(*argv, "ethtype-prio") == 0) {
+ NEXT_ARG();
+ pm.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
+ ret = parse_mapping(&argc, &argv, false,
+ &dcb_app_parse_mapping_ethtype_prio,
+ &pm);
+ } else if (matches(*argv, "default-prio") == 0) {
+ NEXT_ARG();
+ ret = dcb_app_parse_default_prio(&argc, &argv, pm.tab);
+ if (ret != 0) {
+ fprintf(stderr, "Invalid default priority %s\n", *argv);
+ return ret;
+ }
+ } else if (matches(*argv, "dscp-prio") == 0) {
+ NEXT_ARG();
+ pm.selector = IEEE_8021QAZ_APP_SEL_DSCP;
+ ret = parse_mapping_gen(&argc, &argv,
+ &dcb_app_parse_dscp,
+ &dcb_app_parse_mapping_dscp_prio,
+ &pm);
+ } else if (matches(*argv, "stream-port-prio") == 0) {
+ NEXT_ARG();
+ pm.selector = IEEE_8021QAZ_APP_SEL_STREAM;
+ ret = parse_mapping(&argc, &argv, false,
+ &dcb_app_parse_mapping_port_prio,
+ &pm);
+ } else if (matches(*argv, "dgram-port-prio") == 0) {
+ NEXT_ARG();
+ pm.selector = IEEE_8021QAZ_APP_SEL_DGRAM;
+ ret = parse_mapping(&argc, &argv, false,
+ &dcb_app_parse_mapping_port_prio,
+ &pm);
+ } else if (matches(*argv, "port-prio") == 0) {
+ NEXT_ARG();
+ pm.selector = IEEE_8021QAZ_APP_SEL_ANY;
+ ret = parse_mapping(&argc, &argv, false,
+ &dcb_app_parse_mapping_port_prio,
+ &pm);
+ } else {
+ fprintf(stderr, "What is \"%s\"?\n", *argv);
+ dcb_app_help_add();
+ return -EINVAL;
+ }
+
+ if (ret != 0) {
+ fprintf(stderr, "Invalid mapping %s\n", *argv);
+ return ret;
+ }
+ if (pm.err)
+ return pm.err;
+ } while (argc > 0);
+
+ return 0;
+}
+
+static int dcb_cmd_app_add(struct dcb *dcb, const char *dev, int argc, char **argv)
+{
+ struct dcb_app_table tab = {};
+ int ret;
+
+ ret = dcb_cmd_app_parse_add_del(dcb, dev, argc, argv, &tab);
+ if (ret != 0)
+ return ret;
+
+ ret = dcb_app_add_del(dcb, dev, DCB_CMD_IEEE_SET, &tab, NULL);
+ dcb_app_table_fini(&tab);
+ return ret;
+}
+
+static int dcb_cmd_app_del(struct dcb *dcb, const char *dev, int argc, char **argv)
+{
+ struct dcb_app_table tab = {};
+ int ret;
+
+ ret = dcb_cmd_app_parse_add_del(dcb, dev, argc, argv, &tab);
+ if (ret != 0)
+ return ret;
+
+ ret = dcb_app_add_del(dcb, dev, DCB_CMD_IEEE_DEL, &tab, NULL);
+ dcb_app_table_fini(&tab);
+ return ret;
+}
+
+static int dcb_cmd_app_show(struct dcb *dcb, const char *dev, int argc, char **argv)
+{
+ struct dcb_app_table tab = {};
+ int ret;
+
+ ret = dcb_app_get(dcb, dev, &tab);
+ if (ret != 0)
+ return ret;
+
+ dcb_app_table_sort(&tab);
+
+ open_json_object(NULL);
+
+ if (!argc) {
+ dcb_app_print(dcb, &tab);
+ goto out;
+ }
+
+ do {
+ if (matches(*argv, "help") == 0) {
+ dcb_app_help_show_flush();
+ goto out;
+ } else if (matches(*argv, "ethtype-prio") == 0) {
+ dcb_app_print_ethtype_prio(&tab);
+ } else if (matches(*argv, "dscp-prio") == 0) {
+ dcb_app_print_dscp_prio(dcb, &tab);
+ } else if (matches(*argv, "stream-port-prio") == 0) {
+ dcb_app_print_stream_port_prio(&tab);
+ } else if (matches(*argv, "dgram-port-prio") == 0) {
+ dcb_app_print_dgram_port_prio(&tab);
+ } else if (matches(*argv, "port-prio") == 0) {
+ dcb_app_print_port_prio(&tab);
+ } else if (matches(*argv, "default-prio") == 0) {
+ dcb_app_print_default_prio(&tab);
+ } else {
+ fprintf(stderr, "What is \"%s\"?\n", *argv);
+ dcb_app_help_show_flush();
+ ret = -EINVAL;
+ goto out;
+ }
+
+ NEXT_ARG_FWD();
+ } while (argc > 0);
+
+out:
+ close_json_object();
+ dcb_app_table_fini(&tab);
+ return ret;
+}
+
+static int dcb_cmd_app_flush(struct dcb *dcb, const char *dev, int argc, char **argv)
+{
+ struct dcb_app_table tab = {};
+ int ret;
+
+ ret = dcb_app_get(dcb, dev, &tab);
+ if (ret != 0)
+ return ret;
+
+ if (!argc) {
+ ret = dcb_app_add_del(dcb, dev, DCB_CMD_IEEE_DEL, &tab, NULL);
+ goto out;
+ }
+
+ do {
+ if (matches(*argv, "help") == 0) {
+ dcb_app_help_show_flush();
+ goto out;
+ } else if (matches(*argv, "ethtype-prio") == 0) {
+ ret = dcb_app_add_del(dcb, dev, DCB_CMD_IEEE_DEL, &tab,
+ &dcb_app_is_ethtype);
+ if (ret != 0)
+ goto out;
+ } else if (matches(*argv, "default-prio") == 0) {
+ ret = dcb_app_add_del(dcb, dev, DCB_CMD_IEEE_DEL, &tab,
+ &dcb_app_is_default);
+ if (ret != 0)
+ goto out;
+ } else if (matches(*argv, "dscp-prio") == 0) {
+ ret = dcb_app_add_del(dcb, dev, DCB_CMD_IEEE_DEL, &tab,
+ &dcb_app_is_dscp);
+ if (ret != 0)
+ goto out;
+ } else {
+ fprintf(stderr, "What is \"%s\"?\n", *argv);
+ dcb_app_help_show_flush();
+ ret = -EINVAL;
+ goto out;
+ }
+
+ NEXT_ARG_FWD();
+ } while (argc > 0);
+
+out:
+ dcb_app_table_fini(&tab);
+ return ret;
+}
+
+static int dcb_cmd_app_replace(struct dcb *dcb, const char *dev, int argc, char **argv)
+{
+ struct dcb_app_table orig = {};
+ struct dcb_app_table tab = {};
+ struct dcb_app_table new = {};
+ int ret;
+
+ ret = dcb_app_get(dcb, dev, &orig);
+ if (ret != 0)
+ return ret;
+
+ ret = dcb_cmd_app_parse_add_del(dcb, dev, argc, argv, &tab);
+ if (ret != 0)
+ goto out;
+
+ /* Attempts to add an existing entry would be rejected, so drop
+ * these entries from tab.
+ */
+ ret = dcb_app_table_copy(&new, &tab);
+ if (ret != 0)
+ goto out;
+ dcb_app_table_remove_existing(&new, &orig);
+
+ ret = dcb_app_add_del(dcb, dev, DCB_CMD_IEEE_SET, &new, NULL);
+ if (ret != 0) {
+ fprintf(stderr, "Could not add new APP entries\n");
+ goto out;
+ }
+
+ /* Remove the obsolete entries. */
+ dcb_app_table_remove_replaced(&orig, &tab);
+ ret = dcb_app_add_del(dcb, dev, DCB_CMD_IEEE_DEL, &orig, NULL);
+ if (ret != 0) {
+ fprintf(stderr, "Could not remove replaced APP entries\n");
+ goto out;
+ }
+
+out:
+ dcb_app_table_fini(&new);
+ dcb_app_table_fini(&tab);
+ dcb_app_table_fini(&orig);
+ return 0;
+}
+
+int dcb_cmd_app(struct dcb *dcb, int argc, char **argv)
+{
+ if (!argc || matches(*argv, "help") == 0) {
+ dcb_app_help();
+ return 0;
+ } else if (matches(*argv, "show") == 0) {
+ NEXT_ARG_FWD();
+ return dcb_cmd_parse_dev(dcb, argc, argv,
+ dcb_cmd_app_show, dcb_app_help_show_flush);
+ } else if (matches(*argv, "flush") == 0) {
+ NEXT_ARG_FWD();
+ return dcb_cmd_parse_dev(dcb, argc, argv,
+ dcb_cmd_app_flush, dcb_app_help_show_flush);
+ } else if (matches(*argv, "add") == 0) {
+ NEXT_ARG_FWD();
+ return dcb_cmd_parse_dev(dcb, argc, argv,
+ dcb_cmd_app_add, dcb_app_help_add);
+ } else if (matches(*argv, "del") == 0) {
+ NEXT_ARG_FWD();
+ return dcb_cmd_parse_dev(dcb, argc, argv,
+ dcb_cmd_app_del, dcb_app_help_add);
+ } else if (matches(*argv, "replace") == 0) {
+ NEXT_ARG_FWD();
+ return dcb_cmd_parse_dev(dcb, argc, argv,
+ dcb_cmd_app_replace, dcb_app_help_add);
+ } else {
+ fprintf(stderr, "What is \"%s\"?\n", *argv);
+ dcb_app_help();
+ return -EINVAL;
+ }
+}