diff options
Diffstat (limited to 'ripngd/ripng_offset.c')
| -rw-r--r-- | ripngd/ripng_offset.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/ripngd/ripng_offset.c b/ripngd/ripng_offset.c new file mode 100644 index 0000000..d842f15 --- /dev/null +++ b/ripngd/ripng_offset.c @@ -0,0 +1,149 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* RIPng offset-list + * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org> + */ + +/* RIPng support by Vincent Jardin <vincent.jardin@6wind.com> + * Copyright (C) 2002 6WIND + */ + +#include <zebra.h> + +#include "if.h" +#include "prefix.h" +#include "filter.h" +#include "command.h" +#include "linklist.h" +#include "memory.h" + +#include "ripngd/ripngd.h" + +DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_OFFSET_LIST, "RIPng offset lst"); + +#define OFFSET_LIST_IN_NAME(O) ((O)->direct[RIPNG_OFFSET_LIST_IN].alist_name) +#define OFFSET_LIST_IN_METRIC(O) ((O)->direct[RIPNG_OFFSET_LIST_IN].metric) + +#define OFFSET_LIST_OUT_NAME(O) ((O)->direct[RIPNG_OFFSET_LIST_OUT].alist_name) +#define OFFSET_LIST_OUT_METRIC(O) ((O)->direct[RIPNG_OFFSET_LIST_OUT].metric) + +struct ripng_offset_list *ripng_offset_list_new(struct ripng *ripng, + const char *ifname) +{ + struct ripng_offset_list *new; + + new = XCALLOC(MTYPE_RIPNG_OFFSET_LIST, + sizeof(struct ripng_offset_list)); + new->ripng = ripng; + new->ifname = strdup(ifname); + listnode_add_sort(ripng->offset_list_master, new); + + return new; +} + +void ripng_offset_list_del(struct ripng_offset_list *offset) +{ + listnode_delete(offset->ripng->offset_list_master, offset); + ripng_offset_list_free(offset); +} + +void ripng_offset_list_free(struct ripng_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)); + free(offset->ifname); + XFREE(MTYPE_RIPNG_OFFSET_LIST, offset); +} + +struct ripng_offset_list *ripng_offset_list_lookup(struct ripng *ripng, + const char *ifname) +{ + struct ripng_offset_list *offset; + struct listnode *node, *nnode; + + for (ALL_LIST_ELEMENTS(ripng->offset_list_master, node, nnode, + offset)) { + if (strcmp(offset->ifname, ifname) == 0) + return offset; + } + return NULL; +} + +/* If metric is modified return 1. */ +int ripng_offset_list_apply_in(struct ripng *ripng, struct prefix_ipv6 *p, + struct interface *ifp, uint8_t *metric) +{ + struct ripng_offset_list *offset; + struct access_list *alist; + + /* Look up offset-list with interface name. */ + offset = ripng_offset_list_lookup(ripng, ifp->name); + if (offset && OFFSET_LIST_IN_NAME(offset)) { + alist = access_list_lookup(AFI_IP6, + 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 = ripng_offset_list_lookup(ripng, "*"); + if (offset && OFFSET_LIST_IN_NAME(offset)) { + alist = access_list_lookup(AFI_IP6, + 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 modified return 1. */ +int ripng_offset_list_apply_out(struct ripng *ripng, struct prefix_ipv6 *p, + struct interface *ifp, uint8_t *metric) +{ + struct ripng_offset_list *offset; + struct access_list *alist; + + /* Look up offset-list with interface name. */ + offset = ripng_offset_list_lookup(ripng, ifp->name); + if (offset && OFFSET_LIST_OUT_NAME(offset)) { + alist = access_list_lookup(AFI_IP6, + 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 = ripng_offset_list_lookup(ripng, "*"); + if (offset && OFFSET_LIST_OUT_NAME(offset)) { + alist = access_list_lookup(AFI_IP6, + 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; +} + +int offset_list_cmp(struct ripng_offset_list *o1, struct ripng_offset_list *o2) +{ + return strcmp(o1->ifname, o2->ifname); +} |