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author | paul <paul> | 2002-12-13 21:15:29 +0100 |
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committer | paul <paul> | 2002-12-13 21:15:29 +0100 |
commit | 718e3744195351130f4ce7dbe0613f4b3e23df93 (patch) | |
tree | bac2ad39971cd43f31241ef123bd4e470f695ac9 /ripd/rip_offset.c | |
download | frr-718e3744195351130f4ce7dbe0613f4b3e23df93.tar.xz frr-718e3744195351130f4ce7dbe0613f4b3e23df93.zip |
Initial revision
Diffstat (limited to 'ripd/rip_offset.c')
-rw-r--r-- | ripd/rip_offset.c | 414 |
1 files changed, 414 insertions, 0 deletions
diff --git a/ripd/rip_offset.c b/ripd/rip_offset.c new file mode 100644 index 000000000..0d473482e --- /dev/null +++ b/ripd/rip_offset.c @@ -0,0 +1,414 @@ +/* RIP offset-list + * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org> + * + * This file is part of GNU Zebra. + * + * GNU Zebra 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. + * + * GNU Zebra 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. + */ + +#include <zebra.h> + +#include "if.h" +#include "prefix.h" +#include "filter.h" +#include "command.h" +#include "linklist.h" +#include "memory.h" + +#define RIP_OFFSET_LIST_IN 0 +#define RIP_OFFSET_LIST_OUT 1 +#define RIP_OFFSET_LIST_MAX 2 + +struct rip_offset_list +{ + char *ifname; + + struct + { + char *alist_name; + /* struct access_list *alist; */ + int metric; + } direct[RIP_OFFSET_LIST_MAX]; +}; + +static struct list *rip_offset_list_master; + +int +strcmp_safe (char *s1, char *s2) +{ + if (s1 == NULL && s2 == NULL) + return 0; + if (s1 == NULL) + return -1; + if (s2 == NULL) + return 1; + return strcmp (s1, s2); +} + +struct rip_offset_list * +rip_offset_list_new () +{ + struct rip_offset_list *new; + + new = XMALLOC (MTYPE_RIP_OFFSET_LIST, sizeof (struct rip_offset_list)); + memset (new, 0, sizeof (struct rip_offset_list)); + return new; +} + +void +rip_offset_list_free (struct rip_offset_list *offset) +{ + XFREE (MTYPE_RIP_OFFSET_LIST, offset); +} + +struct rip_offset_list * +rip_offset_list_lookup (char *ifname) +{ + struct rip_offset_list *offset; + struct listnode *nn; + + LIST_LOOP (rip_offset_list_master, offset, nn) + { + if (strcmp_safe (offset->ifname, ifname) == 0) + return offset; + } + return NULL; +} + +struct rip_offset_list * +rip_offset_list_get (char *ifname) +{ + struct rip_offset_list *offset; + + offset = rip_offset_list_lookup (ifname); + if (offset) + return offset; + + offset = rip_offset_list_new (); + if (ifname) + offset->ifname = strdup (ifname); + listnode_add_sort (rip_offset_list_master, offset); + + return offset; +} + +int +rip_offset_list_set (struct vty *vty, char *alist, char *direct_str, + char *metric_str, char *ifname) +{ + int direct; + int metric; + struct rip_offset_list *offset; + + /* Check direction. */ + if (strncmp (direct_str, "i", 1) == 0) + direct = RIP_OFFSET_LIST_IN; + else if (strncmp (direct_str, "o", 1) == 0) + direct = RIP_OFFSET_LIST_OUT; + else + { + vty_out (vty, "Invalid direction: %s%s", direct_str, VTY_NEWLINE); + return CMD_WARNING; + } + + /* Check metric. */ + metric = atoi (metric_str); + if (metric < 0 || metric > 16) + { + vty_out (vty, "Invalid metric: %s%s", metric_str, VTY_NEWLINE); + return CMD_WARNING; + } + + /* Get offset-list structure with interface name. */ + offset = rip_offset_list_get (ifname); + + if (offset->direct[direct].alist_name) + free (offset->direct[direct].alist_name); + offset->direct[direct].alist_name = strdup (alist); + offset->direct[direct].metric = metric; + + return CMD_SUCCESS; +} + +int +rip_offset_list_unset (struct vty *vty, char *alist, char *direct_str, + char *metric_str, char *ifname) +{ + int direct; + int metric; + struct rip_offset_list *offset; + + /* Check direction. */ + if (strncmp (direct_str, "i", 1) == 0) + direct = RIP_OFFSET_LIST_IN; + else if (strncmp (direct_str, "o", 1) == 0) + direct = RIP_OFFSET_LIST_OUT; + else + { + vty_out (vty, "Invalid direction: %s%s", direct_str, VTY_NEWLINE); + return CMD_WARNING; + } + + /* Check metric. */ + metric = atoi (metric_str); + if (metric < 0 || metric > 16) + { + vty_out (vty, "Invalid metric: %s%s", metric_str, VTY_NEWLINE); + return CMD_WARNING; + } + + /* Get offset-list structure with interface name. */ + offset = rip_offset_list_lookup (ifname); + + if (offset) + { + if (offset->direct[direct].alist_name) + free (offset->direct[direct].alist_name); + offset->direct[direct].alist_name = NULL; + + if (offset->direct[RIP_OFFSET_LIST_IN].alist_name == NULL && + offset->direct[RIP_OFFSET_LIST_OUT].alist_name == NULL) + { + listnode_delete (rip_offset_list_master, offset); + if (offset->ifname) + free (offset->ifname); + rip_offset_list_free (offset); + } + } + else + { + vty_out (vty, "Can't find offset-list%s", VTY_NEWLINE); + return CMD_WARNING; + } + return CMD_SUCCESS; +} + +#define OFFSET_LIST_IN_NAME(O) ((O)->direct[RIP_OFFSET_LIST_IN].alist_name) +#define OFFSET_LIST_IN_METRIC(O) ((O)->direct[RIP_OFFSET_LIST_IN].metric) + +#define OFFSET_LIST_OUT_NAME(O) ((O)->direct[RIP_OFFSET_LIST_OUT].alist_name) +#define OFFSET_LIST_OUT_METRIC(O) ((O)->direct[RIP_OFFSET_LIST_OUT].metric) + +/* If metric is modifed return 1. */ +int +rip_offset_list_apply_in (struct prefix_ipv4 *p, struct interface *ifp, + u_int32_t *metric) +{ + struct rip_offset_list *offset; + struct access_list *alist; + + /* Look up offset-list with interface name. */ + offset = rip_offset_list_lookup (ifp->name); + if (offset && OFFSET_LIST_IN_NAME (offset)) + { + alist = access_list_lookup (AFI_IP, OFFSET_LIST_IN_NAME (offset)); + + if (alist + && access_list_apply (alist, (struct prefix *)p) == FILTER_PERMIT) + { + *metric += OFFSET_LIST_IN_METRIC (offset); + return 1; + } + return 0; + } + /* Look up offset-list without interface name. */ + offset = rip_offset_list_lookup (NULL); + if (offset && OFFSET_LIST_IN_NAME (offset)) + { + alist = access_list_lookup (AFI_IP, OFFSET_LIST_IN_NAME (offset)); + + if (alist + && access_list_apply (alist, (struct prefix *)p) == FILTER_PERMIT) + { + *metric += OFFSET_LIST_IN_METRIC (offset); + return 1; + } + return 0; + } + return 0; +} + +/* If metric is modifed return 1. */ +int +rip_offset_list_apply_out (struct prefix_ipv4 *p, struct interface *ifp, + u_int32_t *metric) +{ + struct rip_offset_list *offset; + struct access_list *alist; + + /* Look up offset-list with interface name. */ + offset = rip_offset_list_lookup (ifp->name); + if (offset && OFFSET_LIST_OUT_NAME (offset)) + { + alist = access_list_lookup (AFI_IP, OFFSET_LIST_OUT_NAME (offset)); + + if (alist + && access_list_apply (alist, (struct prefix *)p) == FILTER_PERMIT) + { + *metric += OFFSET_LIST_OUT_METRIC (offset); + return 1; + } + return 0; + } + + /* Look up offset-list without interface name. */ + offset = rip_offset_list_lookup (NULL); + if (offset && OFFSET_LIST_OUT_NAME (offset)) + { + alist = access_list_lookup (AFI_IP, OFFSET_LIST_OUT_NAME (offset)); + + if (alist + && access_list_apply (alist, (struct prefix *)p) == FILTER_PERMIT) + { + *metric += OFFSET_LIST_OUT_METRIC (offset); + return 1; + } + return 0; + } + return 0; +} + +DEFUN (rip_offset_list, + rip_offset_list_cmd, + "offset-list WORD (in|out) <0-16>", + "Modify RIP metric\n" + "Access-list name\n" + "For incoming updates\n" + "For outgoing updates\n" + "Metric value\n") +{ + return rip_offset_list_set (vty, argv[0], argv[1], argv[2], NULL); +} + +DEFUN (rip_offset_list_ifname, + rip_offset_list_ifname_cmd, + "offset-list WORD (in|out) <0-16> IFNAME", + "Modify RIP metric\n" + "Access-list name\n" + "For incoming updates\n" + "For outgoing updates\n" + "Metric value\n" + "Interface to match\n") +{ + return rip_offset_list_set (vty, argv[0], argv[1], argv[2], argv[3]); +} + +DEFUN (no_rip_offset_list, + no_rip_offset_list_cmd, + "no offset-list WORD (in|out) <0-16>", + NO_STR + "Modify RIP metric\n" + "Access-list name\n" + "For incoming updates\n" + "For outgoing updates\n" + "Metric value\n") +{ + return rip_offset_list_unset (vty, argv[0], argv[1], argv[2], NULL); +} + +DEFUN (no_rip_offset_list_ifname, + no_rip_offset_list_ifname_cmd, + "no offset-list WORD (in|out) <0-16> IFNAME", + NO_STR + "Modify RIP metric\n" + "Access-list name\n" + "For incoming updates\n" + "For outgoing updates\n" + "Metric value\n" + "Interface to match\n") +{ + return rip_offset_list_unset (vty, argv[0], argv[1], argv[2], argv[3]); +} + +int +offset_list_cmp (struct rip_offset_list *o1, struct rip_offset_list *o2) +{ + return strcmp_safe (o1->ifname, o2->ifname); +} + +void +offset_list_del (struct rip_offset_list *offset) +{ + if (OFFSET_LIST_IN_NAME (offset)) + free (OFFSET_LIST_IN_NAME (offset)); + if (OFFSET_LIST_OUT_NAME (offset)) + free (OFFSET_LIST_OUT_NAME (offset)); + if (offset->ifname) + free (offset->ifname); + rip_offset_list_free (offset); +} + +void +rip_offset_init () +{ + rip_offset_list_master = list_new (); + rip_offset_list_master->cmp = (int (*)(void *, void *)) offset_list_cmp; + rip_offset_list_master->del = (void (*)(void *)) offset_list_del; + + install_element (RIP_NODE, &rip_offset_list_cmd); + install_element (RIP_NODE, &rip_offset_list_ifname_cmd); + install_element (RIP_NODE, &no_rip_offset_list_cmd); + install_element (RIP_NODE, &no_rip_offset_list_ifname_cmd); +} + +void +rip_offset_clean () +{ + list_delete (rip_offset_list_master); + + rip_offset_list_master = list_new (); + rip_offset_list_master->cmp = (int (*)(void *, void *)) offset_list_cmp; + rip_offset_list_master->del = (void (*)(void *)) offset_list_del; +} + +int +config_write_rip_offset_list (struct vty *vty) +{ + struct listnode *nn; + struct rip_offset_list *offset; + + LIST_LOOP (rip_offset_list_master, offset, nn) + { + if (! offset->ifname) + { + if (offset->direct[RIP_OFFSET_LIST_IN].alist_name) + vty_out (vty, " offset-list %s in %d%s", + offset->direct[RIP_OFFSET_LIST_IN].alist_name, + offset->direct[RIP_OFFSET_LIST_IN].metric, + VTY_NEWLINE); + if (offset->direct[RIP_OFFSET_LIST_OUT].alist_name) + vty_out (vty, " offset-list %s out %d%s", + offset->direct[RIP_OFFSET_LIST_OUT].alist_name, + offset->direct[RIP_OFFSET_LIST_OUT].metric, + VTY_NEWLINE); + } + else + { + if (offset->direct[RIP_OFFSET_LIST_IN].alist_name) + vty_out (vty, " offset-list %s in %d %s%s", + offset->direct[RIP_OFFSET_LIST_IN].alist_name, + offset->direct[RIP_OFFSET_LIST_IN].metric, + offset->ifname, VTY_NEWLINE); + if (offset->direct[RIP_OFFSET_LIST_OUT].alist_name) + vty_out (vty, " offset-list %s out %d %s%s", + offset->direct[RIP_OFFSET_LIST_OUT].alist_name, + offset->direct[RIP_OFFSET_LIST_OUT].metric, + offset->ifname, VTY_NEWLINE); + } + } + + return 0; +} |