diff options
Diffstat (limited to 'zebra/zebra_affinitymap.c')
| -rw-r--r-- | zebra/zebra_affinitymap.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/zebra/zebra_affinitymap.c b/zebra/zebra_affinitymap.c new file mode 100644 index 0000000..ae0f9a8 --- /dev/null +++ b/zebra/zebra_affinitymap.c @@ -0,0 +1,144 @@ +/* + * zebra affinity-map. + * + * Copyright 2022 6WIND S.A. + * + * This file is part of Free Range Routing (FRR). + * + * FRR 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. + * + * FRR 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 this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <zebra.h> +#include "lib/if.h" +#include "lib/vrf.h" +#include "zebra/redistribute.h" +#include "zebra/zebra_affinitymap.h" + +static bool zebra_affinity_map_check_use(const char *affmap_name) +{ + char xpath[XPATH_MAXLEN]; + struct interface *ifp; + struct vrf *vrf; + + RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { + FOR_ALL_INTERFACES (vrf, ifp) { + snprintf(xpath, sizeof(xpath), + "/frr-interface:lib/interface[name='%s']", + ifp->name); + if (!yang_dnode_exists(running_config->dnode, xpath)) + continue; + snprintf( + xpath, sizeof(xpath), + "/frr-interface:lib/interface[name='%s']/frr-zebra:zebra/link-params/affinities[affinity='%s']", + ifp->name, affmap_name); + if (yang_dnode_exists(running_config->dnode, xpath)) + return true; + } + } + return false; +} + +static bool zebra_affinity_map_check_update(const char *affmap_name, + uint16_t new_pos) +{ + char xpath[XPATH_MAXLEN]; + struct interface *ifp; + struct vrf *vrf; + + /* check whether the affinity-map new bit position is upper than 31 + * but is used on an interface on which affinity-mode is standard. + * Return false if the change is not possible. + */ + if (new_pos < 32) + return true; + + RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { + FOR_ALL_INTERFACES (vrf, ifp) { + snprintf(xpath, sizeof(xpath), + "/frr-interface:lib/interface[name='%s']", + ifp->name); + if (!yang_dnode_exists(running_config->dnode, xpath)) + continue; + snprintf( + xpath, sizeof(xpath), + "/frr-interface:lib/interface[name='%s']/frr-zebra:zebra/link-params/affinities[affinity='%s']", + ifp->name, affmap_name); + if (!yang_dnode_exists(running_config->dnode, xpath)) + continue; + if (yang_dnode_get_enum( + running_config->dnode, + "/frr-interface:lib/interface[name='%s']/frr-zebra:zebra/link-params/affinity-mode", + ifp->name) == AFFINITY_MODE_STANDARD) + return false; + } + } + return true; +} + +static void zebra_affinity_map_update(const char *affmap_name, uint16_t old_pos, + uint16_t new_pos) +{ + struct if_link_params *iflp; + enum affinity_mode aff_mode; + char xpath[XPATH_MAXLEN]; + struct interface *ifp; + struct vrf *vrf; + + RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) { + FOR_ALL_INTERFACES (vrf, ifp) { + snprintf(xpath, sizeof(xpath), + "/frr-interface:lib/interface[name='%s']", + ifp->name); + if (!yang_dnode_exists(running_config->dnode, xpath)) + continue; + snprintf( + xpath, sizeof(xpath), + "/frr-interface:lib/interface[name='%s']/frr-zebra:zebra/link-params/affinities[affinity='%s']", + ifp->name, affmap_name); + if (!yang_dnode_exists(running_config->dnode, xpath)) + continue; + aff_mode = yang_dnode_get_enum( + running_config->dnode, + "/frr-interface:lib/interface[name='%s']/frr-zebra:zebra/link-params/affinity-mode", + ifp->name); + iflp = if_link_params_get(ifp); + if (aff_mode == AFFINITY_MODE_EXTENDED || + aff_mode == AFFINITY_MODE_BOTH) { + admin_group_unset(&iflp->ext_admin_grp, + old_pos); + admin_group_set(&iflp->ext_admin_grp, new_pos); + } + if (aff_mode == AFFINITY_MODE_STANDARD || + aff_mode == AFFINITY_MODE_BOTH) { + iflp->admin_grp &= ~(1 << old_pos); + if (new_pos < 32) + iflp->admin_grp |= 1 << new_pos; + if (iflp->admin_grp == 0) + UNSET_PARAM(iflp, LP_ADM_GRP); + } + if (if_is_operative(ifp)) + zebra_interface_parameters_update(ifp); + } + } +} + +void zebra_affinity_map_init(void) +{ + affinity_map_init(); + + affinity_map_set_check_use_hook(zebra_affinity_map_check_use); + affinity_map_set_check_update_hook(zebra_affinity_map_check_update); + affinity_map_set_update_hook(zebra_affinity_map_update); +} |