mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
synced 2025-12-24 21:50:17 +01:00
370 lines
11 KiB
C
370 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/* NetworkManager -- Network link manager
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*
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* Copyright (C) 2013 Red Hat, Inc.
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*/
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#include "nm-default.h"
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#include <sys/wait.h>
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#include "nm-dcb.h"
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#include "platform/nm-platform.h"
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#include "NetworkManagerUtils.h"
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static const char *helper_names[] = { "dcbtool", "fcoeadm" };
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gboolean
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do_helper (const char *iface,
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guint which,
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DcbFunc run_func,
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gpointer user_data,
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GError **error,
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const char *fmt,
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...)
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{
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gs_free const char **split = NULL;
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gs_free char *cmdline = NULL;
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gs_free const char **argv = NULL;
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gsize i;
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gsize u;
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va_list args;
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g_return_val_if_fail (fmt != NULL, FALSE);
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va_start (args, fmt);
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cmdline = g_strdup_vprintf (fmt, args);
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va_end (args);
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split = nm_utils_strsplit_set_with_empty (cmdline, " ");
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if (!split) {
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g_set_error (error, NM_MANAGER_ERROR, NM_MANAGER_ERROR_FAILED,
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"failure parsing %s command line", helper_names[which]);
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return FALSE;
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}
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/* Allocate space for path, custom arg, interface name, arguments, and NULL */
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i = 0;
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argv = g_new (const char *, NM_PTRARRAY_LEN (split) + 4);
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argv[i++] = NULL; /* Placeholder for dcbtool path */
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if (which == DCBTOOL) {
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argv[i++] = "sc";
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argv[i++] = (char *) iface;
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}
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for (u = 0; split[u]; u++)
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argv[i++] = split[u];
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argv[i++] = NULL;
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if (!run_func ((char **) argv, which, user_data, error)) {
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g_assert (!error || *error);
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return FALSE;
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}
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return TRUE;
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}
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gboolean
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_dcb_enable (const char *iface,
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gboolean enable,
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DcbFunc run_func,
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gpointer user_data,
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GError **error)
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{
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if (enable)
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return do_helper (iface, DCBTOOL, run_func, user_data, error, "dcb on");
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else
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return do_helper (iface, DCBTOOL, run_func, user_data, error, "dcb off");
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}
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#define SET_FLAGS(f, tag) \
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G_STMT_START { \
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if (!do_helper (iface, DCBTOOL, run_func, user_data, error, tag " e:%c a:%c w:%c", \
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f & NM_SETTING_DCB_FLAG_ENABLE ? '1' : '0', \
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f & NM_SETTING_DCB_FLAG_ADVERTISE ? '1' : '0', \
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f & NM_SETTING_DCB_FLAG_WILLING ? '1' : '0')) \
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return FALSE; \
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} G_STMT_END
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#define SET_APP(f, s, tag) \
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G_STMT_START { \
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int prio = nm_setting_dcb_get_app_##tag##_priority (s); \
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\
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SET_FLAGS (f, "app:" #tag); \
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if ((f & NM_SETTING_DCB_FLAG_ENABLE) && (prio >= 0)) { \
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if (!do_helper (iface, DCBTOOL, run_func, user_data, error, "app:" #tag " appcfg:%02x", (1 << prio))) \
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return FALSE; \
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} \
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} G_STMT_END
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gboolean
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_dcb_setup (const char *iface,
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NMSettingDcb *s_dcb,
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DcbFunc run_func,
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gpointer user_data,
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GError **error)
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{
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NMSettingDcbFlags flags;
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guint i;
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g_assert (s_dcb);
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/* FCoE */
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flags = nm_setting_dcb_get_app_fcoe_flags (s_dcb);
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SET_APP (flags, s_dcb, fcoe);
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/* iSCSI */
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flags = nm_setting_dcb_get_app_iscsi_flags (s_dcb);
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SET_APP (flags, s_dcb, iscsi);
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/* FIP */
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flags = nm_setting_dcb_get_app_fip_flags (s_dcb);
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SET_APP (flags, s_dcb, fip);
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/* Priority Flow Control */
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flags = nm_setting_dcb_get_priority_flow_control_flags (s_dcb);
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SET_FLAGS (flags, "pfc");
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if (flags & NM_SETTING_DCB_FLAG_ENABLE) {
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char buf[10];
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for (i = 0; i < 8; i++)
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buf[i] = nm_setting_dcb_get_priority_flow_control (s_dcb, i) ? '1' : '0';
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buf[i] = 0;
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if (!do_helper (iface, DCBTOOL, run_func, user_data, error, "pfc pfcup:%s", buf))
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return FALSE;
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}
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/* Priority Groups */
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flags = nm_setting_dcb_get_priority_group_flags (s_dcb);
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if (flags & NM_SETTING_DCB_FLAG_ENABLE) {
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GString *s;
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gboolean success;
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guint id;
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s = g_string_sized_new (150);
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g_string_append_printf (s, "pg e:1 a:%c w:%c",
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flags & NM_SETTING_DCB_FLAG_ADVERTISE ? '1' : '0',
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flags & NM_SETTING_DCB_FLAG_WILLING ? '1' : '0');
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/* Priority Groups */
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g_string_append (s, " pgid:");
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for (i = 0; i < 8; i++) {
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id = nm_setting_dcb_get_priority_group_id (s_dcb, i);
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g_assert (id < 8 || id == 15);
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g_string_append_c (s, (id < 8) ? ('0' + id) : 'f');
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}
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/* Priority Group Bandwidth */
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g_string_append_printf (s, " pgpct:%u,%u,%u,%u,%u,%u,%u,%u",
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nm_setting_dcb_get_priority_group_bandwidth (s_dcb, 0),
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nm_setting_dcb_get_priority_group_bandwidth (s_dcb, 1),
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nm_setting_dcb_get_priority_group_bandwidth (s_dcb, 2),
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nm_setting_dcb_get_priority_group_bandwidth (s_dcb, 3),
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nm_setting_dcb_get_priority_group_bandwidth (s_dcb, 4),
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nm_setting_dcb_get_priority_group_bandwidth (s_dcb, 5),
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nm_setting_dcb_get_priority_group_bandwidth (s_dcb, 6),
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nm_setting_dcb_get_priority_group_bandwidth (s_dcb, 7));
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/* Priority Bandwidth */
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g_string_append_printf (s, " uppct:%u,%u,%u,%u,%u,%u,%u,%u",
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nm_setting_dcb_get_priority_bandwidth (s_dcb, 0),
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nm_setting_dcb_get_priority_bandwidth (s_dcb, 1),
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nm_setting_dcb_get_priority_bandwidth (s_dcb, 2),
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nm_setting_dcb_get_priority_bandwidth (s_dcb, 3),
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nm_setting_dcb_get_priority_bandwidth (s_dcb, 4),
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nm_setting_dcb_get_priority_bandwidth (s_dcb, 5),
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nm_setting_dcb_get_priority_bandwidth (s_dcb, 6),
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nm_setting_dcb_get_priority_bandwidth (s_dcb, 7));
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/* Strict Bandwidth */
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g_string_append (s, " strict:");
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for (i = 0; i < 8; i++)
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g_string_append_c (s, nm_setting_dcb_get_priority_strict_bandwidth (s_dcb, i) ? '1' : '0');
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/* Priority Traffic Class */
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g_string_append (s, " up2tc:");
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for (i = 0; i < 8; i++) {
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id = nm_setting_dcb_get_priority_traffic_class (s_dcb, i);
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g_assert (id < 8);
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g_string_append_c (s, '0' + id);
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}
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success = do_helper (iface, DCBTOOL, run_func, user_data, error, "%s", s->str);
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g_string_free (s, TRUE);
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if (!success)
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return FALSE;
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} else {
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/* Ignore disable failure since lldpad <= 0.9.46 does not support disabling
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* priority groups without specifying an entire PG config.
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*/
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(void) do_helper (iface, DCBTOOL, run_func, user_data, error, "pg e:0");
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}
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return TRUE;
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}
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gboolean
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_dcb_cleanup (const char *iface,
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DcbFunc run_func,
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gpointer user_data,
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GError **error)
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{
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const char *cmds[] = {
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"app:fcoe e:0",
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"app:iscsi e:0",
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"app:fip e:0",
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"pfc e:0",
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"pg e:0",
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NULL
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};
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const char **iter = cmds;
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gboolean success = TRUE;
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/* Turn everything off and return first error we get (if any) */
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while (iter && *iter) {
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if (!do_helper (iface, DCBTOOL, run_func, user_data, success ? error : NULL, "%s", *iter))
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success = FALSE;
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iter++;
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}
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if (!_dcb_enable (iface, FALSE, run_func, user_data, success ? error : NULL))
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success = FALSE;
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return success;
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}
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gboolean
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_fcoe_setup (const char *iface,
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NMSettingDcb *s_dcb,
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DcbFunc run_func,
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gpointer user_data,
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GError **error)
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{
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NMSettingDcbFlags flags;
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g_assert (s_dcb);
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flags = nm_setting_dcb_get_app_fcoe_flags (s_dcb);
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if (flags & NM_SETTING_DCB_FLAG_ENABLE) {
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const char *mode = nm_setting_dcb_get_app_fcoe_mode (s_dcb);
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if (!do_helper (NULL, FCOEADM, run_func, user_data, error, "-m %s -c %s", mode, iface))
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return FALSE;
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} else {
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if (!do_helper (NULL, FCOEADM, run_func, user_data, error, "-d %s", iface))
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return FALSE;
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}
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return TRUE;
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}
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gboolean
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_fcoe_cleanup (const char *iface,
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DcbFunc run_func,
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gpointer user_data,
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GError **error)
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{
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return do_helper (NULL, FCOEADM, run_func, user_data, error, "-d %s", iface);
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}
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static gboolean
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run_helper (char **argv, guint which, gpointer user_data, GError **error)
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{
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const char *helper_path;
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int exit_status = 0;
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gboolean success;
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char *errmsg = NULL, *outmsg = NULL;
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char *cmdline;
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helper_path = nm_utils_find_helper ((which == DCBTOOL) ? "dcbtool" : "fcoeadm", NULL, error);
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if (!helper_path)
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return FALSE;
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argv[0] = (char *) helper_path;
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cmdline = g_strjoinv (" ", argv);
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nm_log_dbg (LOGD_DCB, "%s", cmdline);
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success = g_spawn_sync ("/", argv, NULL, 0 /*G_SPAWN_DEFAULT*/,
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NULL, NULL,
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&outmsg, &errmsg, &exit_status, error);
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/* Log any stderr output */
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if (success && WIFEXITED (exit_status) && WEXITSTATUS (exit_status) && (errmsg || outmsg)) {
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gboolean ignore_error = FALSE;
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/* Ignore fcoeadm "success" errors like when FCoE is already set up */
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if (errmsg && strstr (errmsg, "Connection already created"))
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ignore_error = TRUE;
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if (ignore_error == FALSE) {
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nm_log_warn (LOGD_DCB, "'%s' failed: '%s'",
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cmdline, (errmsg && strlen (errmsg)) ? errmsg : outmsg);
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g_set_error (error, NM_MANAGER_ERROR, NM_MANAGER_ERROR_FAILED,
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"Failed to run '%s'", cmdline);
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success = FALSE;
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}
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}
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g_free (outmsg);
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g_free (errmsg);
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g_free (cmdline);
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return success;
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}
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gboolean
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nm_dcb_enable (const char *iface, gboolean enable, GError **error)
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{
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return _dcb_enable (iface, enable, run_helper, GUINT_TO_POINTER (DCBTOOL), error);
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}
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gboolean
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nm_dcb_setup (const char *iface, NMSettingDcb *s_dcb, GError **error)
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{
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gboolean success;
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success = _dcb_setup (iface, s_dcb, run_helper, GUINT_TO_POINTER (DCBTOOL), error);
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if (success)
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success = _fcoe_setup (iface, s_dcb, run_helper, GUINT_TO_POINTER (FCOEADM), error);
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return success;
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}
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static void
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carrier_wait (const char *iface, guint secs, gboolean up)
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{
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int ifindex, count = secs * 10;
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g_return_if_fail (iface != NULL);
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ifindex = nm_platform_link_get_ifindex (NM_PLATFORM_GET, iface);
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if (ifindex > 0) {
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/* To work around driver quirks and lldpad handling of carrier status,
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* we must wait a short period of time to see if the carrier goes
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* down, and then wait for the carrier to come back up again. Otherwise
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* subsequent lldpad calls may fail with "Device not found, link down
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* or DCB not enabled" errors.
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*/
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nm_log_dbg (LOGD_DCB, "(%s): cleanup waiting for carrier %s",
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iface, up ? "up" : "down");
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g_usleep (G_USEC_PER_SEC / 4);
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while (nm_platform_link_is_connected (NM_PLATFORM_GET, ifindex) != up && count-- > 0) {
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g_usleep (G_USEC_PER_SEC / 10);
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nm_platform_link_refresh (NM_PLATFORM_GET, ifindex);
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}
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}
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}
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gboolean
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nm_dcb_cleanup (const char *iface, GError **error)
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{
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/* Ignore FCoE cleanup errors */
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_fcoe_cleanup (iface, run_helper, GUINT_TO_POINTER (FCOEADM), NULL);
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/* Must pause a bit to wait for carrier-up since disabling FCoE may
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* cause the device to take the link down, making lldpad return errors.
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*/
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carrier_wait (iface, 2, FALSE);
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carrier_wait (iface, 4, TRUE);
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return _dcb_cleanup (iface, run_helper, GUINT_TO_POINTER (DCBTOOL), error);
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}
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