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2a333e0f22
This commit includes the following changes - 1. Support for MSDP peer DB (hash and sorted list). 2. Support for the following timers - keepalive, connect-retry, hold. 3. TCP session management (lower-ip is active, higher-ip is passive). 4. MSDP KA packet rx/tx. 5. Limited temporary config (will be replaced with the more automation friendly RP-set). Testing done - Peer bringup/deletion (including interop with another vendor) Sample out - root@dell-s6000-04:~# sudo vtysh -c "show ip msdp peer" Peer Local Mesh-group State Uptime 100.1.1.1 100.1.2.1 default established 00:07:27 100.1.3.1 100.1.2.1 default established 00:31:50 root@dell-s6000-04:~# Coming soon - 1. part-2: SA cache management. 2. part-3: SPT setup using source in SA cache. 3. part-4: CLI cleanup. Ticket: CM-13306 Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com> Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
/*
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* IP MSDP for Quagga
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* Copyright (C) 2016 Cumulus Networks, Inc.
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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
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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_MSDP_H
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#define PIM_MSDP_H
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enum pim_msdp_peer_state {
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PIM_MSDP_DISABLED,
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PIM_MSDP_INACTIVE,
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PIM_MSDP_LISTEN,
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PIM_MSDP_CONNECTING,
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PIM_MSDP_ESTABLISHED
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};
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/* SA and KA TLVs are processed; rest ignored */
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enum pim_msdp_tlv {
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PIM_MSDP_V4_SOURCE_ACTIVE = 1,
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PIM_MSDP_V4_SOURCE_ACTIVE_REQUEST,
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PIM_MSDP_V4_SOURCE_ACTIVE_RESPONSE,
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PIM_MSDP_KEEPALIVE,
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PIM_MSDP_RESERVED,
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PIM_MSDP_TRACEROUTE_PROGRESS,
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PIM_MSDP_TRACEROUTE_REPLY,
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};
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/* MSDP error codes */
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enum pim_msdp_err {
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PIM_MSDP_ERR_NONE = 0,
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PIM_MSDP_ERR_OOM = -1,
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PIM_MSDP_ERR_PEER_EXISTS = -2,
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PIM_MSDP_ERR_MAX_MESH_GROUPS = -3,
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PIM_MSDP_ERR_NO_PEER = -4,
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};
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#define PIM_MSDP_STATE_STRLEN 16
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#define PIM_MSDP_PEER_KEY_STRLEN 80
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#define PIM_MSDP_UPTIME_STRLEN 80
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#define PIM_MSDP_TCP_PORT 639
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#define PIM_MSDP_SOCKET_SNDBUF_SIZE 65536
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#define PIM_MSDP_PEER_IS_LISTENER(mp) (mp->flags & PIM_MSDP_PEERF_LISTENER)
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enum pim_msdp_peer_flags {
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PIM_MSDP_PEERF_NONE = 0,
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PIM_MSDP_PEERF_LISTENER = (1 << 0)
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};
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struct pim_msdp_peer {
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/* configuration */
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struct in_addr local;
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struct in_addr peer;
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char *mesh_group_name;
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/* state */
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enum pim_msdp_peer_state state;
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enum pim_msdp_peer_flags flags;
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/* TCP socket info */
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union sockunion su_local;
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union sockunion su_peer;
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int fd;
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/* protocol timers */
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#define PIM_MSDP_PEER_HOLD_TIME 75
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struct thread *hold_timer; // 5.4
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#define PIM_MSDP_PEER_KA_TIME 60
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struct thread *ka_timer; // 5.5
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#define PIM_MSDP_PEER_CONNECT_RETRY_TIME 30
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struct thread *cr_timer; // 5.6
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/* packet thread and buffers */
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struct stream *ibuf;
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struct stream_fifo *obuf;
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struct thread *t_read;
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struct thread *t_write;
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/* stats */
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uint32_t ka_tx_cnt;
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uint32_t sa_tx_cnt;
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uint32_t ka_rx_cnt;
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uint32_t sa_rx_cnt;
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uint32_t unk_rx_cnt;
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/* timestamps */
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int64_t uptime;
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};
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enum pim_msdp_flags {
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PIM_MSDPF_NONE = 0,
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PIM_MSDPF_LISTENER = (1 << 0)
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};
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struct pim_msdp_listener {
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int fd;
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union sockunion su;
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struct thread *thread;
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};
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struct pim_msdp {
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enum pim_msdp_flags flags;
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struct hash *peer_hash;
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struct list *peer_list;
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struct pim_msdp_listener listener;
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struct thread_master *master;
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uint32_t rejected_accepts;
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};
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#define PIM_MSDP_PEER_READ_ON(mp) THREAD_READ_ON(msdp->master, mp->t_read, pim_msdp_read, mp, mp->fd);
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#define PIM_MSDP_PEER_WRITE_ON(mp) THREAD_WRITE_ON(msdp->master, mp->t_write, pim_msdp_write, mp, mp->fd);
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#define PIM_MSDP_PEER_READ_OFF(mp) THREAD_READ_OFF(mp->t_read)
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#define PIM_MSDP_PEER_WRITE_OFF(mp) THREAD_WRITE_OFF(mp->t_write)
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extern struct pim_msdp *msdp;
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void pim_msdp_init(struct thread_master *master);
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void pim_msdp_exit(void);
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enum pim_msdp_err pim_msdp_peer_add(struct in_addr peer, struct in_addr local, const char *mesh_group_name);
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enum pim_msdp_err pim_msdp_peer_del(struct in_addr peer_addr);
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char *pim_msdp_state_dump(enum pim_msdp_peer_state state, char *buf, int buf_size);
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struct pim_msdp_peer *pim_msdp_peer_find(struct in_addr peer_addr);
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void pim_msdp_peer_established(struct pim_msdp_peer *mp);
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void pim_msdp_peer_pkt_rxed(struct pim_msdp_peer *mp);
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void pim_msdp_peer_stop_tcp_conn(struct pim_msdp_peer *mp, bool chg_state);
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void pim_msdp_peer_reset_tcp_conn(struct pim_msdp_peer *mp, const char *rc_str);
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int pim_msdp_write(struct thread *thread);
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char *pim_msdp_peer_key_dump(struct pim_msdp_peer *mp, char *buf, int buf_size, bool long_format);
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#endif
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