+++ /dev/null
---- a/configure.ac
-+++ b/configure.ac
-@@ -397,7 +397,7 @@ dnl -------------------------
- AC_CHECK_HEADERS([stropts.h sys/ksym.h sys/times.h sys/select.h \
- sys/types.h linux/version.h netdb.h asm/types.h \
- sys/param.h limits.h signal.h libutil.h \
-- sys/socket.h netinet/in.h time.h sys/time.h])
-+ sys/socket.h netinet/in.h time.h sys/time.h linux/ip_mp_alg.h])
-
- dnl Utility macro to avoid retyping includes all the time
- m4_define([QUAGGA_INCLUDES],
---- a/lib/command.h
-+++ b/lib/command.h
-@@ -101,6 +101,7 @@ enum node_type
- DUMP_NODE, /* Packet dump node. */
- FORWARDING_NODE, /* IP forwarding node. */
- PROTOCOL_NODE, /* protocol filtering node */
-+ MULTIPATH_NODE, /* Multipath policy node */
- VTY_NODE, /* Vty node. */
- };
-
-@@ -272,6 +273,7 @@ struct desc
- /* Common descriptions. */
- #define SHOW_STR "Show running system information\n"
- #define IP_STR "IP information\n"
-+#define MULTIPATH_STR "Configure multipath policy\n"
- #define IPV6_STR "IPv6 information\n"
- #define NO_STR "Negate a command or set its defaults\n"
- #define REDIST_STR "Redistribute information from another routing protocol\n"
---- a/lib/zebra.h
-+++ b/lib/zebra.h
-@@ -176,6 +176,10 @@ typedef int socklen_t;
- #define RT_TABLE_MAIN 0
- #endif /* HAVE_NETLINK */
-
-+#ifdef HAVE_LINUX_IP_MP_ALG_H
-+#include <linux/ip_mp_alg.h>
-+#endif /* HAVE_LINUX_IP_MP_ALG_H */
-+
- #ifdef HAVE_NETDB_H
- #include <netdb.h>
- #endif /* HAVE_NETDB_H */
---- a/zebra/main.c
-+++ b/zebra/main.c
-@@ -44,6 +44,7 @@
- struct zebra_t zebrad =
- {
- .rtm_table_default = 0,
-+ .mpath = 0,
- };
-
- /* process id. */
---- /dev/null
-+++ b/zebra/multipath.h
-@@ -0,0 +1,37 @@
-+/*
-+ * multipath policy names.
-+ *
-+ * This file is part of Quagga routing suite.
-+ *
-+ * Quagga is free software; you can redistribute it and/or modify it
-+ * under the terms of the GNU General Public License as published by the
-+ * Free Software Foundation; either version 2, or (at your option) any
-+ * later version.
-+ *
-+ * Quagga is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-+ * General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with GNU Zebra; see the file COPYING. If not, write to the Free
-+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-+ * 02111-1307, USA.
-+ */
-+
-+#ifndef ZEBRA_MULTIPATH_H
-+#define ZEBRA_MULTIPATH_H
-+#include <zebra.h>
-+
-+#ifdef HAVE_LINUX_IP_MP_ALG_H
-+
-+static char *mp_alg_names[IP_MP_ALG_MAX+1] = {
-+ [IP_MP_ALG_NONE] = "none",
-+ [IP_MP_ALG_RR] = "rr",
-+ [IP_MP_ALG_DRR] = "drr",
-+ [IP_MP_ALG_RANDOM] = "random",
-+ [IP_MP_ALG_WRANDOM] = "wrandom"
-+ };
-+#endif
-+#endif
-+
---- a/zebra/rt_netlink.c
-+++ b/zebra/rt_netlink.c
-@@ -36,6 +36,7 @@
- #include "thread.h"
- #include "privs.h"
-
-+#include "multipath.h"
- #include "zebra/zserv.h"
- #include "zebra/rt.h"
- #include "zebra/redistribute.h"
-@@ -1694,6 +1695,16 @@ netlink_route_multipath (int cmd, struct
- if (src)
- addattr_l (&req.n, sizeof req, RTA_PREFSRC, &src->ipv4, bytelen);
-
-+#ifdef HAVE_LINUX_IP_MP_ALG_H
-+ if (zebrad.mpath != IP_MP_ALG_NONE)
-+ {
-+ if (IS_ZEBRA_DEBUG_KERNEL)
-+ zlog_debug("netlink_route_multipath() (multihop): "
-+ "multipath policy : %s",mp_alg_names[zebrad.mpath]);
-+
-+ addattr_l (&req.n, 1024, RTA_MP_ALGO, &zebrad.mpath, sizeof(zebrad.mpath));
-+ }
-+#endif
- if (rta->rta_len > RTA_LENGTH (0))
- addattr_l (&req.n, 1024, RTA_MULTIPATH, RTA_DATA (rta),
- RTA_PAYLOAD (rta));
---- a/zebra/zserv.c
-+++ b/zebra/zserv.c
-@@ -36,6 +36,7 @@
- #include "privs.h"
- #include "network.h"
- #include "buffer.h"
-+#include "multipath.h"
-
- #include "zebra/zserv.h"
- #include "zebra/router-id.h"
-@@ -1120,6 +1121,9 @@ zebra_client_create (int sock)
- /* Set table number. */
- client->rtm_table = zebrad.rtm_table_default;
-
-+ /* Set multipath policy */
-+ client->mpath = zebrad.mpath;
-+
- /* Add this client to linked list. */
- listnode_add (zebrad.client_list, client);
-
-@@ -1697,6 +1701,91 @@ static struct cmd_node forwarding_node =
- };
-
- \f
-+#ifdef HAVE_LINUX_IP_MP_ALG_H
-+DEFUN (multipath_rr,
-+ multipath_rr_cmd,
-+ "multipath rr",
-+ MULTIPATH_STR
-+ "Round Robin multipath policy")
-+{
-+ zebrad.mpath=IP_MP_ALG_RR;
-+ return CMD_SUCCESS;
-+}
-+
-+DEFUN (multipath_drr,
-+ multipath_drr_cmd,
-+ "multipath drr",
-+ MULTIPATH_STR
-+ "Device round robin multipath policy")
-+{
-+ zebrad.mpath=IP_MP_ALG_DRR;
-+ return CMD_SUCCESS;
-+}
-+
-+DEFUN (multipath_random,
-+ multipath_random_cmd,
-+ "multipath random",
-+ MULTIPATH_STR
-+ "Random multipath policy")
-+{
-+ zebrad.mpath=IP_MP_ALG_RANDOM;
-+ return CMD_SUCCESS;
-+}
-+
-+DEFUN (multipath_wrandom,
-+ multipath_wrandom_cmd,
-+ "multipath wrandom",
-+ MULTIPATH_STR
-+ "Weighted random multipath policy")
-+{
-+ zebrad.mpath=IP_MP_ALG_WRANDOM;
-+ return CMD_SUCCESS;
-+}
-+
-+DEFUN (no_multipath,
-+ no_multipath_cmd,
-+ "no multipath",
-+ NO_STR
-+ MULTIPATH_STR
-+ "Remove multipath policy")
-+{
-+ zebrad.mpath=IP_MP_ALG_NONE;
-+ return CMD_SUCCESS;
-+}
-+
-+DEFUN (show_multipath,
-+ show_multipath_cmd,
-+ "show multipath",
-+ SHOW_STR
-+ "Show multipath policy")
-+{
-+ vty_out (vty, "multipath %s%s", mp_alg_names[zebrad.mpath],
-+ VTY_NEWLINE);
-+ return CMD_SUCCESS;
-+}
-+
-+/* multipath policy configuration write function. */
-+static int
-+config_write_multipath (struct vty *vty)
-+{
-+
-+
-+ if (zebrad.mpath)
-+ vty_out (vty, "multipath %s%s", mp_alg_names[zebrad.mpath],
-+ VTY_NEWLINE);
-+ return 0;
-+}
-+
-+/* table node for multipath policy. */
-+struct cmd_node multipath_node =
-+{
-+ MULTIPATH_NODE,
-+ "",
-+ 1
-+};
-+
-+#endif /* HAVE_LINUX_IP_MP_ALG_H */
-+
- /* Initialisation of zebra and installation of commands. */
- void
- zebra_init (void)
-@@ -1708,6 +1797,10 @@ zebra_init (void)
- install_node (&table_node, config_write_table);
- install_node (&forwarding_node, config_write_forwarding);
-
-+#ifdef HAVE_LINUX_IP_MP_ALG_H
-+ install_node (&multipath_node, config_write_multipath);
-+#endif
-+
- install_element (VIEW_NODE, &show_ip_forwarding_cmd);
- install_element (ENABLE_NODE, &show_ip_forwarding_cmd);
- install_element (CONFIG_NODE, &ip_forwarding_cmd);
-@@ -1718,6 +1811,14 @@ zebra_init (void)
- install_element (VIEW_NODE, &show_table_cmd);
- install_element (ENABLE_NODE, &show_table_cmd);
- install_element (CONFIG_NODE, &config_table_cmd);
-+#ifdef HAVE_LINUX_IP_MP_ALG_H
-+ install_element (CONFIG_NODE, &multipath_rr_cmd);
-+ install_element (CONFIG_NODE, &multipath_drr_cmd);
-+ install_element (CONFIG_NODE, &multipath_random_cmd);
-+ install_element (CONFIG_NODE, &multipath_wrandom_cmd);
-+ install_element (CONFIG_NODE, &no_multipath_cmd);
-+ install_element (ENABLE_NODE, &show_multipath_cmd);
-+#endif /* HAVE_LINUX_IP_MP_ALG_H */
- #endif /* HAVE_NETLINK */
-
- #ifdef HAVE_IPV6
---- a/zebra/zserv.h
-+++ b/zebra/zserv.h
-@@ -55,6 +55,9 @@ struct zserv
- /* default routing table this client munges */
- int rtm_table;
-
-+ /* multipath policy */
-+ u_int32_t mpath;
-+
- /* This client's redistribute flag. */
- u_char redist[ZEBRA_ROUTE_MAX];
-
-@@ -78,6 +81,9 @@ struct zebra_t
- /* default table */
- int rtm_table_default;
-
-+ /* multipath policy */
-+ u_int32_t mpath;
-+
- /* rib work queue */
- struct work_queue *ribq;
- struct meta_queue *mq;
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