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17823cdd2c
There was some code missed during the upstreaming process due to code squash. Identify and put into a commit to keep code consistent and correct. Signed-off-by: Satheesh Kumar K <sathk@cumulusnetworks.com> Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com> Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
152 lines
5.1 KiB
C
152 lines
5.1 KiB
C
/*
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* PIM for Quagga
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* Copyright (C) 2008 Everton da Silva Marques
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef PIM_OIL_H
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#define PIM_OIL_H
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#include "pim_mroute.h"
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#include "pim_iface.h"
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/*
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* Where did we get this (S,G) from?
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*
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* IGMP - Learned from IGMP
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* PIM - Learned from PIM
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* SOURCE - Learned from Source multicast packet received
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* STAR - Inherited
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*/
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#define PIM_OIF_FLAG_PROTO_IGMP (1 << 0)
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#define PIM_OIF_FLAG_PROTO_PIM (1 << 1)
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#define PIM_OIF_FLAG_PROTO_STAR (1 << 2)
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#define PIM_OIF_FLAG_PROTO_VXLAN (1 << 3)
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#define PIM_OIF_FLAG_PROTO_ANY \
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(PIM_OIF_FLAG_PROTO_IGMP | PIM_OIF_FLAG_PROTO_PIM \
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| PIM_OIF_FLAG_PROTO_STAR | PIM_OIF_FLAG_PROTO_VXLAN)
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/* OIF is present in the OIL but must not be used for forwarding traffic */
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#define PIM_OIF_FLAG_MUTE (1 << 4)
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/*
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* We need a pimreg vif id from the kernel.
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* Since ifindex == vif id for most cases and the number
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* of expected interfaces is at most 100, using MAXVIFS -1
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* is probably ok.
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* Don't come running to me if this assumption is bad,
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* fix it.
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*/
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#define PIM_OIF_PIM_REGISTER_VIF 0
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#define PIM_MAX_USABLE_VIFS (MAXVIFS - 1)
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struct channel_counts {
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unsigned long long lastused;
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unsigned long origpktcnt;
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unsigned long pktcnt;
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unsigned long oldpktcnt;
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unsigned long origbytecnt;
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unsigned long bytecnt;
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unsigned long oldbytecnt;
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unsigned long origwrong_if;
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unsigned long wrong_if;
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unsigned long oldwrong_if;
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};
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/*
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qpim_channel_oil_list holds a list of struct channel_oil.
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Each channel_oil.oil is used to control an (S,G) entry in the Kernel
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Multicast Forwarding Cache.
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There is a case when we create a channel_oil but don't install in the kernel
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Case where (S, G) entry not installed in the kernel:
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FRR receives IGMP/PIM (*, G) join and RP is not configured or
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not-reachable, then create a channel_oil for the group G with the incoming
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interface(channel_oil.oil.mfcc_parent) as invalid i.e "MAXVIF" and populate
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the outgoing interface where join is received. Keep this entry in the stack,
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but don't install in the kernel(channel_oil.installed = 0).
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Case where (S, G) entry installed in the kernel:
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When RP is configured and is reachable for the group G, and receiving a
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join if channel_oil is already present then populate the incoming interface
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and install the entry in the kernel, if channel_oil not present, then create
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a new_channel oil(channel_oil.installed = 1).
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is_valid: indicate if this entry is valid to get installed in kernel.
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installed: indicate if this entry is installed in the kernel.
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*/
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PREDECL_RBTREE_UNIQ(rb_pim_oil)
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struct channel_oil {
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struct pim_instance *pim;
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struct rb_pim_oil_item oil_rb;
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struct mfcctl oil;
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int installed;
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int oil_inherited_rescan;
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int oil_size;
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int oil_ref_count;
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time_t oif_creation[MAXVIFS];
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uint32_t oif_flags[MAXVIFS];
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struct channel_counts cc;
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struct pim_upstream *up;
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time_t mroute_creation;
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};
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extern int pim_channel_oil_compare(const struct channel_oil *c1,
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const struct channel_oil *c2);
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DECLARE_RBTREE_UNIQ(rb_pim_oil, struct channel_oil, oil_rb,
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pim_channel_oil_compare)
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extern struct list *pim_channel_oil_list;
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void pim_oil_init(struct pim_instance *pim);
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void pim_oil_terminate(struct pim_instance *pim);
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void pim_channel_oil_free(struct channel_oil *c_oil);
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struct channel_oil *pim_find_channel_oil(struct pim_instance *pim,
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struct prefix_sg *sg);
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struct channel_oil *pim_channel_oil_add(struct pim_instance *pim,
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struct prefix_sg *sg,
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const char *name);
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void pim_channel_oil_change_iif(struct pim_instance *pim,
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struct channel_oil *c_oil, int input_vif_index,
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const char *name);
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struct channel_oil *pim_channel_oil_del(struct channel_oil *c_oil,
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const char *name);
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int pim_channel_add_oif(struct channel_oil *c_oil, struct interface *oif,
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uint32_t proto_mask, const char *caller);
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int pim_channel_del_oif(struct channel_oil *c_oil, struct interface *oif,
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uint32_t proto_mask, const char *caller);
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int pim_channel_oil_empty(struct channel_oil *c_oil);
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char *pim_channel_oil_dump(struct channel_oil *c_oil, char *buf, size_t size);
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void pim_channel_update_oif_mute(struct channel_oil *c_oil,
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struct pim_interface *pim_ifp);
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void pim_channel_oil_upstream_deref(struct channel_oil *c_oil);
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void pim_channel_del_inherited_oif(struct channel_oil *c_oil,
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struct interface *oif, const char *caller);
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#endif /* PIM_OIL_H */
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