projects / apple / xnu.git / blame
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|---|---|---|
| 39236c6e A |
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 */ | |
| 38 | typedef 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 | */ | |
| 46 | struct 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 | */ | |
| 65 | struct 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 | |
| 80 | extern void mp_pcbinit(void); | |
| 81 | extern void mp_pcbinfo_attach(struct mppcbinfo *); | |
| 82 | extern int mp_pcbinfo_detach(struct mppcbinfo *); | |
| 83 | extern int mp_pcballoc(struct socket *, struct mppcbinfo *); | |
| 84 | extern void mp_pcbdetach(struct mppcb *); | |
| 85 | extern void mp_pcbdispose(struct mppcb *); | |
| 86 | extern void mp_gc_sched(void); | |
| 87 | extern void mptcp_timer_sched(void); | |
| 88 | __END_DECLS | |
| 89 | ||
| 90 | #endif /* BSD_KERNEL_PRIVATE */ | |
| 91 | #endif /* !_NETINET_MP_PCB_H_ */ |