1/* 2 * Copyright (c) 2012-2013 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29#ifndef _NETINET_MP_PCB_H_ 30#define _NETINET_MP_PCB_H_ 31 32#ifdef BSD_KERNEL_PRIVATE 33#include <sys/types.h> 34#include <sys/queue.h> 35#include <kern/locks.h> 36 37/* Keep in sync with bsd/dev/dtrace/scripts/mptcp.d */ 38typedef enum mppcb_state { 39 MPPCB_STATE_INUSE = 1, 40 MPPCB_STATE_DEAD = 2, 41} mppcb_state_t; 42 43/* 44 * Multipath Protocol Control Block 45 */ 46struct mppcb { 47 TAILQ_ENTRY(mppcb) mpp_entry; /* glue to all PCBs */ 48 decl_lck_mtx_data(, mpp_lock); /* per PCB lock */ 49 struct mppcbinfo *mpp_pcbinfo; /* PCB info */ 50 void *mpp_pcbe; /* ptr to per-protocol ext */ 51 struct socket *mpp_socket; /* back pointer to socket */ 52 uint32_t mpp_flags; /* PCB flags */ 53 mppcb_state_t mpp_state; /* PCB state */ 54}; 55 56#define sotomppcb(so) ((struct mppcb *)((so)->so_pcb)) 57 58/* valid values for mpp_flags */ 59#define MPP_ATTACHED 0x1 60#define MPP_DEFUNCT 0x2 61 62/* 63 * Multipath PCB Information 64 */ 65struct mppcbinfo { 66 TAILQ_ENTRY(mppcbinfo) mppi_entry; /* glue to all PCB info */ 67 TAILQ_HEAD(, mppcb) mppi_pcbs; /* list of PCBs */ 68 uint32_t mppi_count; /* # of PCBs in list */ 69 struct zone *mppi_zone; /* zone for this PCB */ 70 uint32_t mppi_size; /* size of PCB structure */ 71 lck_grp_t *mppi_lock_grp; /* lock grp */ 72 lck_attr_t *mppi_lock_attr; /* lock attr */ 73 lck_grp_attr_t *mppi_lock_grp_attr; /* lock grp attr */ 74 decl_lck_mtx_data(, mppi_lock); /* global PCB lock */ 75 uint32_t (*mppi_gc)(struct mppcbinfo *); /* garbage collector func */ 76 uint32_t (*mppi_timer)(struct mppcbinfo *); /* timer func */ 77}; 78 79__BEGIN_DECLS 80extern void mp_pcbinit(void); 81extern void mp_pcbinfo_attach(struct mppcbinfo *); 82extern int mp_pcbinfo_detach(struct mppcbinfo *); 83extern int mp_pcballoc(struct socket *, struct mppcbinfo *); 84extern void mp_pcbdetach(struct mppcb *); 85extern void mp_pcbdispose(struct mppcb *); 86extern void mp_gc_sched(void); 87extern void mptcp_timer_sched(void); 88__END_DECLS 89 90#endif /* BSD_KERNEL_PRIVATE */ 91#endif /* !_NETINET_MP_PCB_H_ */ 92