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e7eefda4ba
We were figuring out the group size 2 times. Figure it out 1 time and then pass it around. Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/*
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PIM for Quagga
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Copyright (C) 2008 Everton da Silva Marques
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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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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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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING; if not, write to the
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Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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MA 02110-1301 USA
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*/
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#ifndef PIM_MSG_H
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#define PIM_MSG_H
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#include <netinet/in.h>
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#include "pim_jp_agg.h"
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/*
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Number Description
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---------- ------------------
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0 Reserved
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1 IP (IP version 4)
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2 IP6 (IP version 6)
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From:
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http://www.iana.org/assignments/address-family-numbers
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*/
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#define PIM_MSG_ADDRESS_FAMILY_IPV4 (1)
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/*
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* Network Order pim_msg_hdr
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*/
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struct pim_msg_header {
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uint8_t type:4;
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uint8_t ver:4;
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uint8_t reserved;
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uint16_t checksum;
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} __attribute__ ((packed));
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struct pim_encoded_ipv4_unicast {
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uint8_t family;
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uint8_t reserved;
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struct in_addr addr;
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} __attribute__ ((packed));
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struct pim_encoded_group_ipv4 {
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uint8_t ne;
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uint8_t family;
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uint8_t reserved;
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uint8_t mask;
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struct in_addr addr;
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} __attribute__ ((packed));
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struct pim_encoded_source_ipv4 {
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uint8_t ne;
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uint8_t family;
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uint8_t bits;
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uint8_t mask;
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struct in_addr addr;
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} __attribute__ ((packed));
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struct pim_jp_groups {
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struct pim_encoded_group_ipv4 g;
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uint16_t joins;
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uint16_t prunes;
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struct pim_encoded_source_ipv4 s[1];
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} __attribute__ ((packed));
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struct pim_jp {
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struct pim_msg_header header;
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struct pim_encoded_ipv4_unicast addr;
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uint8_t reserved;
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uint8_t num_groups;
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uint16_t holdtime;
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struct pim_jp_groups groups[1];
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} __attribute__ ((packed));
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void pim_msg_build_header(uint8_t *pim_msg, size_t pim_msg_size, uint8_t pim_msg_type);
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uint8_t *pim_msg_addr_encode_ipv4_ucast(uint8_t *buf, struct in_addr addr);
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uint8_t *pim_msg_addr_encode_ipv4_group(uint8_t *buf, struct in_addr addr);
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#define PIM_ENCODE_SPARSE_BIT 0x04
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#define PIM_ENCODE_WC_BIT 0x02
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#define PIM_ENCODE_RPT_BIT 0x01
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uint8_t *pim_msg_addr_encode_ipv4_source(uint8_t *buf,
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struct in_addr addr, uint8_t bits);
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size_t pim_msg_get_jp_group_size (struct list *sources);
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size_t pim_msg_build_jp_groups (struct pim_jp_groups *grp, struct pim_jp_agg_group *sgs, size_t size);
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#endif /* PIM_MSG_H */
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