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freebsd/sys/netinet/in_pcb.h
Gleb Smirnoff 0b4539ee54 inpcb: gc unused argument of in_pcbconnect()
2024-11-14 11:39:13 -08:00

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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1982, 1986, 1990, 1993
* The Regents of the University of California.
* Copyright (c) 2010-2011 Juniper Networks, Inc.
* All rights reserved.
*
* Portions of this software were developed by Robert N. M. Watson under
* contract to Juniper Networks, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _NETINET_IN_PCB_H_
#define _NETINET_IN_PCB_H_
#include <sys/queue.h>
#include <sys/epoch.h>
#include <sys/_lock.h>
#include <sys/_mutex.h>
#include <sys/_rwlock.h>
#include <sys/_smr.h>
#include <net/route.h>
#ifdef _KERNEL
#include <sys/lock.h>
#include <sys/proc.h>
#include <sys/rwlock.h>
#include <sys/sysctl.h>
#include <net/vnet.h>
#include <vm/uma.h>
#endif
#include <sys/ck.h>
/*
* struct inpcb is the common protocol control block structure used in most
* IP transport protocols.
*
* Pointers to local and foreign host table entries, local and foreign socket
* numbers, and pointers up (to a socket structure) and down (to a
* protocol-specific control block) are stored here.
*/
CK_LIST_HEAD(inpcbhead, inpcb);
CK_LIST_HEAD(inpcbporthead, inpcbport);
CK_LIST_HEAD(inpcblbgrouphead, inpcblbgroup);
typedef uint64_t inp_gen_t;
/*
* PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet.
* So, AF_INET6 null laddr is also used as AF_INET null laddr, by utilizing
* the following structure. This requires padding always be zeroed out,
* which is done right after inpcb allocation and stays through its lifetime.
*/
struct in_addr_4in6 {
u_int32_t ia46_pad32[3];
struct in_addr ia46_addr4;
};
union in_dependaddr {
struct in_addr_4in6 id46_addr;
struct in6_addr id6_addr;
};
/*
* NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. in_conninfo has
* some extra padding to accomplish this.
* NOTE 2: tcp_syncache.c uses first 5 32-bit words, which identify fport,
* lport, faddr to generate hash, so these fields shouldn't be moved.
*/
struct in_endpoints {
u_int16_t ie_fport; /* foreign port */
u_int16_t ie_lport; /* local port */
/* protocol dependent part, local and foreign addr */
union in_dependaddr ie_dependfaddr; /* foreign host table entry */
union in_dependaddr ie_dependladdr; /* local host table entry */
#define ie_faddr ie_dependfaddr.id46_addr.ia46_addr4
#define ie_laddr ie_dependladdr.id46_addr.ia46_addr4
#define ie6_faddr ie_dependfaddr.id6_addr
#define ie6_laddr ie_dependladdr.id6_addr
u_int32_t ie6_zoneid; /* scope zone id */
};
/*
* XXX The defines for inc_* are hacks and should be changed to direct
* references.
*/
struct in_conninfo {
u_int8_t inc_flags;
u_int8_t inc_len;
u_int16_t inc_fibnum; /* XXX was pad, 16 bits is plenty */
/* protocol dependent part */
struct in_endpoints inc_ie;
};
/*
* Flags for inc_flags.
*/
#define INC_ISIPV6 0x01
#define INC_IPV6MINMTU 0x02
#define inc_fport inc_ie.ie_fport
#define inc_lport inc_ie.ie_lport
#define inc_faddr inc_ie.ie_faddr
#define inc_laddr inc_ie.ie_laddr
#define inc6_faddr inc_ie.ie6_faddr
#define inc6_laddr inc_ie.ie6_laddr
#define inc6_zoneid inc_ie.ie6_zoneid
#if defined(_KERNEL) || defined(_WANT_INPCB)
/*
* struct inpcb captures the network layer state for TCP, UDP, and raw IPv4 and
* IPv6 sockets. In the case of TCP and UDP, further per-connection state is
* located in a larger protocol specific structure that embeds inpcb in it.
* Almost all fields of struct inpcb are static after creation or protected by
* a per-inpcb rwlock, inp_lock.
*
* A inpcb database is indexed by addresses/ports hash as well as list of
* all pcbs that belong to a certain proto. Database lookups or list traversals
* are be performed inside SMR section. Once desired PCB is found its own
* lock is to be obtained and SMR section exited.
*
* Key:
* (c) - Constant after initialization
* (e) - Protected by the SMR section
* (i) - Protected by the inpcb lock
* (p) - Protected by the pcbinfo lock for the inpcb
* (h) - Protected by the pcbhash lock for the inpcb
* (s) - Protected by another subsystem's locks
* (x) - Undefined locking
*
* A few other notes:
*
* When a read lock is held, stability of the field is guaranteed; to write
* to a field, a write lock must generally be held.
*
* netinet/netinet6-layer code should not assume that the inp_socket pointer
* is safe to dereference without inp_lock being held, there may be
* close(2)-related races.
*
* The inp_vflag field is overloaded, and would otherwise ideally be (c).
*/
struct icmp6_filter;
struct inpcbpolicy;
struct m_snd_tag;
struct inpcb {
/* Cache line #1 (amd64) */
CK_LIST_ENTRY(inpcb) inp_hash_exact; /* hash table linkage */
CK_LIST_ENTRY(inpcb) inp_hash_wild; /* hash table linkage */
struct rwlock inp_lock;
/* Cache line #2 (amd64) */
#define inp_start_zero inp_refcount
#define inp_zero_size (sizeof(struct inpcb) - \
offsetof(struct inpcb, inp_start_zero))
u_int inp_refcount; /* (i) refcount */
int inp_flags; /* (i) generic IP/datagram flags */
int inp_flags2; /* (i) generic IP/datagram flags #2*/
uint8_t inp_numa_domain; /* numa domain */
struct socket *inp_socket; /* (i) back pointer to socket */
struct inpcbinfo *inp_pcbinfo; /* (c) PCB list info */
struct ucred *inp_cred; /* (c) cache of socket cred */
u_int32_t inp_flow; /* (i) IPv6 flow information */
u_char inp_vflag; /* (i) IP version flag (v4/v6) */
u_char inp_ip_ttl; /* (i) time to live proto */
u_char inp_ip_p; /* (c) protocol proto */
u_char inp_ip_minttl; /* (i) minimum TTL or drop */
uint32_t inp_flowid; /* (x) flow id / queue id */
smr_seq_t inp_smr; /* (i) sequence number at disconnect */
struct m_snd_tag *inp_snd_tag; /* (i) send tag for outgoing mbufs */
uint32_t inp_flowtype; /* (x) M_HASHTYPE value */
/* Local and foreign ports, local and foreign addr. */
struct in_conninfo inp_inc; /* (i,h) list for PCB's local port */
/* MAC and IPSEC policy information. */
struct label *inp_label; /* (i) MAC label */
struct inpcbpolicy *inp_sp; /* (s) for IPSEC */
/* Protocol-dependent part; options. */
struct {
u_char inp_ip_tos; /* (i) type of service proto */
struct mbuf *inp_options; /* (i) IP options */
struct ip_moptions *inp_moptions; /* (i) mcast options */
};
struct {
/* (i) IP options */
struct mbuf *in6p_options;
/* (i) IP6 options for outgoing packets */
struct ip6_pktopts *in6p_outputopts;
/* (i) IP multicast options */
struct ip6_moptions *in6p_moptions;
/* (i) ICMPv6 code type filter */
struct icmp6_filter *in6p_icmp6filt;
/* (i) IPV6_CHECKSUM setsockopt */
int in6p_cksum;
short in6p_hops;
};
CK_LIST_ENTRY(inpcb) inp_portlist; /* (r:e/w:h) port list */
struct inpcbport *inp_phd; /* (r:e/w:h) head of this list */
inp_gen_t inp_gencnt; /* (c) generation count */
void *spare_ptr; /* Spare pointer. */
rt_gen_t inp_rt_cookie; /* generation for route entry */
union { /* cached L3 information */
struct route inp_route;
struct route_in6 inp_route6;
};
CK_LIST_ENTRY(inpcb) inp_list; /* (r:e/w:p) all PCBs for proto */
};
#endif /* _KERNEL */
#define inp_fport inp_inc.inc_fport
#define inp_lport inp_inc.inc_lport
#define inp_faddr inp_inc.inc_faddr
#define inp_laddr inp_inc.inc_laddr
#define in6p_faddr inp_inc.inc6_faddr
#define in6p_laddr inp_inc.inc6_laddr
#define in6p_zoneid inp_inc.inc6_zoneid
#define inp_vnet inp_pcbinfo->ipi_vnet
/*
* The range of the generation count, as used in this implementation, is 9e19.
* We would have to create 300 billion connections per second for this number
* to roll over in a year. This seems sufficiently unlikely that we simply
* don't concern ourselves with that possibility.
*/
/*
* Interface exported to userland by various protocols which use inpcbs. Hack
* alert -- only define if struct xsocket is in scope.
* Fields prefixed with "xi_" are unique to this structure, and the rest
* match fields in the struct inpcb, to ease coding and porting.
*
* Legend:
* (s) - used by userland utilities in src
* (p) - used by utilities in ports
* (3) - is known to be used by third party software not in ports
* (n) - no known usage
*/
#ifdef _SYS_SOCKETVAR_H_
struct xinpcb {
ksize_t xi_len; /* length of this structure */
struct xsocket xi_socket; /* (s,p) */
struct in_conninfo inp_inc; /* (s,p) */
uint64_t inp_gencnt; /* (s,p) */
int64_t inp_spare64[5];
uint32_t inp_flow; /* (s) */
uint32_t inp_flowid; /* (s) */
uint32_t inp_flowtype; /* (s) */
int32_t inp_flags; /* (s,p) */
int32_t inp_flags2; /* (s) */
uint32_t inp_unused;
int32_t in6p_cksum; /* (n) */
int32_t inp_spare32[4];
uint16_t in6p_hops; /* (n) */
uint8_t inp_ip_tos; /* (n) */
int8_t pad8;
uint8_t inp_vflag; /* (s,p) */
uint8_t inp_ip_ttl; /* (n) */
uint8_t inp_ip_p; /* (n) */
uint8_t inp_ip_minttl; /* (n) */
int8_t inp_spare8[4];
} __aligned(8);
struct xinpgen {
ksize_t xig_len; /* length of this structure */
u_int xig_count; /* number of PCBs at this time */
uint32_t _xig_spare32;
inp_gen_t xig_gen; /* generation count at this time */
so_gen_t xig_sogen; /* socket generation count this time */
uint64_t _xig_spare64[4];
} __aligned(8);
struct sockopt_parameters {
struct in_conninfo sop_inc;
uint64_t sop_id;
int sop_level;
int sop_optname;
char sop_optval[];
};
#ifdef _KERNEL
int sysctl_setsockopt(SYSCTL_HANDLER_ARGS, struct inpcbinfo *pcbinfo,
int (*ctloutput_set)(struct inpcb *, struct sockopt *));
void in_pcbtoxinpcb(const struct inpcb *, struct xinpcb *);
#endif
#endif /* _SYS_SOCKETVAR_H_ */
#ifdef _KERNEL
/*
* Per-VNET pcb database for each high-level protocol (UDP, TCP, ...) in both
* IPv4 and IPv6.
*
* The pcbs are protected with SMR section and thus all lists in inpcbinfo
* are CK-lists. Locking is required to insert a pcb into database. Two
* locks are provided: one for the hash and one for the global list of pcbs,
* as well as overall count and generation count.
*
* Locking key:
*
* (c) Constant or nearly constant after initialisation
* (e) Protected by SMR section
* (g) Locked by ipi_lock
* (h) Locked by ipi_hash_lock
*/
struct inpcbinfo {
/*
* Global lock protecting inpcb list modification
*/
struct mtx ipi_lock;
struct inpcbhead ipi_listhead; /* (r:e/w:g) */
u_int ipi_count; /* (g) */
/*
* Generation count -- incremented each time a connection is allocated
* or freed.
*/
u_quad_t ipi_gencnt; /* (g) */
/*
* Fields associated with port lookup and allocation.
*/
u_short ipi_lastport; /* (h) */
u_short ipi_lastlow; /* (h) */
u_short ipi_lasthi; /* (h) */
/*
* UMA zone from which inpcbs are allocated for this protocol.
*/
uma_zone_t ipi_zone; /* (c) */
uma_zone_t ipi_portzone; /* (c) */
smr_t ipi_smr; /* (c) */
/*
* Global hash of inpcbs, hashed by local and foreign addresses and
* port numbers. The "exact" hash holds PCBs connected to a foreign
* address, and "wild" holds the rest.
*/
struct mtx ipi_hash_lock;
struct inpcbhead *ipi_hash_exact; /* (r:e/w:h) */
struct inpcbhead *ipi_hash_wild; /* (r:e/w:h) */
u_long ipi_hashmask; /* (c) */
/*
* Global hash of inpcbs, hashed by only local port number.
*/
struct inpcbporthead *ipi_porthashbase; /* (h) */
u_long ipi_porthashmask; /* (h) */
/*
* Load balance groups used for the SO_REUSEPORT_LB option,
* hashed by local port.
*/
struct inpcblbgrouphead *ipi_lbgrouphashbase; /* (r:e/w:h) */
u_long ipi_lbgrouphashmask; /* (h) */
/*
* Pointer to network stack instance
*/
struct vnet *ipi_vnet; /* (c) */
};
/*
* Global allocation storage for each high-level protocol (UDP, TCP, ...).
* Each corresponding per-VNET inpcbinfo points into this one.
*/
struct inpcbstorage {
uma_zone_t ips_zone;
uma_zone_t ips_portzone;
uma_init ips_pcbinit;
size_t ips_size;
const char * ips_zone_name;
const char * ips_portzone_name;
const char * ips_infolock_name;
const char * ips_hashlock_name;
};
#define INPCBSTORAGE_DEFINE(prot, ppcb, lname, zname, iname, hname) \
static int \
prot##_inpcb_init(void *mem, int size __unused, int flags __unused) \
{ \
struct inpcb *inp = mem; \
\
rw_init_flags(&inp->inp_lock, lname, RW_RECURSE | RW_DUPOK); \
return (0); \
} \
static struct inpcbstorage prot = { \
.ips_size = sizeof(struct ppcb), \
.ips_pcbinit = prot##_inpcb_init, \
.ips_zone_name = zname, \
.ips_portzone_name = zname " ports", \
.ips_infolock_name = iname, \
.ips_hashlock_name = hname, \
}; \
SYSINIT(prot##_inpcbstorage_init, SI_SUB_PROTO_DOMAIN, \
SI_ORDER_SECOND, in_pcbstorage_init, &prot); \
SYSUNINIT(prot##_inpcbstorage_uninit, SI_SUB_PROTO_DOMAIN, \
SI_ORDER_SECOND, in_pcbstorage_destroy, &prot)
/*
* Load balance groups used for the SO_REUSEPORT_LB socket option. Each group
* (or unique address:port combination) can be re-used at most
* INPCBLBGROUP_SIZMAX (256) times. The inpcbs are stored in il_inp which
* is dynamically resized as processes bind/unbind to that specific group.
*/
struct inpcblbgroup {
CK_LIST_ENTRY(inpcblbgroup) il_list;
struct epoch_context il_epoch_ctx;
struct ucred *il_cred;
uint16_t il_lport; /* (c) */
u_char il_vflag; /* (c) */
uint8_t il_numa_domain;
uint32_t il_pad2;
union in_dependaddr il_dependladdr; /* (c) */
#define il_laddr il_dependladdr.id46_addr.ia46_addr4
#define il6_laddr il_dependladdr.id6_addr
uint32_t il_inpsiz; /* max count in il_inp[] (h) */
uint32_t il_inpcnt; /* cur count in il_inp[] (h) */
struct inpcb *il_inp[]; /* (h) */
};
#define INP_LOCK_DESTROY(inp) rw_destroy(&(inp)->inp_lock)
#define INP_RLOCK(inp) rw_rlock(&(inp)->inp_lock)
#define INP_WLOCK(inp) rw_wlock(&(inp)->inp_lock)
#define INP_TRY_RLOCK(inp) rw_try_rlock(&(inp)->inp_lock)
#define INP_TRY_WLOCK(inp) rw_try_wlock(&(inp)->inp_lock)
#define INP_RUNLOCK(inp) rw_runlock(&(inp)->inp_lock)
#define INP_WUNLOCK(inp) rw_wunlock(&(inp)->inp_lock)
#define INP_UNLOCK(inp) rw_unlock(&(inp)->inp_lock)
#define INP_TRY_UPGRADE(inp) rw_try_upgrade(&(inp)->inp_lock)
#define INP_DOWNGRADE(inp) rw_downgrade(&(inp)->inp_lock)
#define INP_WLOCKED(inp) rw_wowned(&(inp)->inp_lock)
#define INP_LOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_LOCKED)
#define INP_RLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_RLOCKED)
#define INP_WLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_WLOCKED)
#define INP_UNLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_UNLOCKED)
/*
* These locking functions are for inpcb consumers outside of sys/netinet,
* more specifically, they were added for the benefit of TOE drivers. The
* macros are reserved for use by the stack.
*/
void inp_wlock(struct inpcb *);
void inp_wunlock(struct inpcb *);
void inp_rlock(struct inpcb *);
void inp_runlock(struct inpcb *);
#ifdef INVARIANT_SUPPORT
void inp_lock_assert(struct inpcb *);
void inp_unlock_assert(struct inpcb *);
#else
#define inp_lock_assert(inp) do {} while (0)
#define inp_unlock_assert(inp) do {} while (0)
#endif
void inp_apply_all(struct inpcbinfo *, void (*func)(struct inpcb *, void *),
void *arg);
struct socket *
inp_inpcbtosocket(struct inpcb *inp);
void inp_4tuple_get(struct inpcb *inp, uint32_t *laddr, uint16_t *lp,
uint32_t *faddr, uint16_t *fp);
#endif /* _KERNEL */
#define INP_INFO_WLOCK(ipi) mtx_lock(&(ipi)->ipi_lock)
#define INP_INFO_WLOCKED(ipi) mtx_owned(&(ipi)->ipi_lock)
#define INP_INFO_WUNLOCK(ipi) mtx_unlock(&(ipi)->ipi_lock)
#define INP_INFO_LOCK_ASSERT(ipi) MPASS(SMR_ENTERED((ipi)->ipi_smr) || \
mtx_owned(&(ipi)->ipi_lock))
#define INP_INFO_WLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_lock, MA_OWNED)
#define INP_INFO_WUNLOCK_ASSERT(ipi) \
mtx_assert(&(ipi)->ipi_lock, MA_NOTOWNED)
#define INP_HASH_WLOCK(ipi) mtx_lock(&(ipi)->ipi_hash_lock)
#define INP_HASH_WUNLOCK(ipi) mtx_unlock(&(ipi)->ipi_hash_lock)
#define INP_HASH_LOCK_ASSERT(ipi) MPASS(SMR_ENTERED((ipi)->ipi_smr) || \
mtx_owned(&(ipi)->ipi_hash_lock))
#define INP_HASH_WLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_hash_lock, \
MA_OWNED)
/*
* Wildcard matching hash is not just a microoptimisation! The hash for
* wildcard IPv4 and wildcard IPv6 must be the same, otherwise AF_INET6
* wildcard bound pcb won't be able to receive AF_INET connections, while:
* jenkins_hash(&zeroes, 1, s) != jenkins_hash(&zeroes, 4, s)
* See also comment above struct in_addr_4in6.
*/
#define IN_ADDR_JHASH32(addr) \
((addr)->s_addr == INADDR_ANY ? V_in_pcbhashseed : \
jenkins_hash32((&(addr)->s_addr), 1, V_in_pcbhashseed))
#define IN6_ADDR_JHASH32(addr) \
(memcmp((addr), &in6addr_any, sizeof(in6addr_any)) == 0 ? \
V_in_pcbhashseed : \
jenkins_hash32((addr)->__u6_addr.__u6_addr32, \
nitems((addr)->__u6_addr.__u6_addr32), V_in_pcbhashseed))
#define INP_PCBHASH(faddr, lport, fport, mask) \
((IN_ADDR_JHASH32(faddr) ^ ntohs((lport) ^ (fport))) & (mask))
#define INP6_PCBHASH(faddr, lport, fport, mask) \
((IN6_ADDR_JHASH32(faddr) ^ ntohs((lport) ^ (fport))) & (mask))
#define INP_PCBHASH_WILD(lport, mask) \
((V_in_pcbhashseed ^ ntohs(lport)) & (mask))
#define INP_PCBLBGROUP_PKTHASH(faddr, lport, fport) \
(IN_ADDR_JHASH32(faddr) ^ ntohs((lport) ^ (fport)))
#define INP6_PCBLBGROUP_PKTHASH(faddr, lport, fport) \
(IN6_ADDR_JHASH32(faddr) ^ ntohs((lport) ^ (fport)))
#define INP_PCBPORTHASH(lport, mask) (ntohs((lport)) & (mask))
/*
* Flags for inp_vflags -- historically version flags only
*/
#define INP_IPV4 0x1
#define INP_IPV6 0x2
#define INP_IPV6PROTO 0x4 /* opened under IPv6 protocol */
/*
* Flags for inp_flags.
*/
#define INP_RECVOPTS 0x00000001 /* receive incoming IP options */
#define INP_RECVRETOPTS 0x00000002 /* receive IP options for reply */
#define INP_RECVDSTADDR 0x00000004 /* receive IP dst address */
#define INP_HDRINCL 0x00000008 /* user supplies entire IP header */
#define INP_HIGHPORT 0x00000010 /* user wants "high" port binding */
#define INP_LOWPORT 0x00000020 /* user wants "low" port binding */
#define INP_ANONPORT 0x00000040 /* read by netstat(1) */
#define INP_RECVIF 0x00000080 /* receive incoming interface */
#define INP_MTUDISC 0x00000100 /* user can do MTU discovery */
/* INP_FREED 0x00000200 private to in_pcb.c */
#define INP_RECVTTL 0x00000400 /* receive incoming IP TTL */
#define INP_DONTFRAG 0x00000800 /* don't fragment packet */
#define INP_BINDANY 0x00001000 /* allow bind to any address */
#define INP_INHASHLIST 0x00002000 /* in_pcbinshash() has been called */
#define INP_RECVTOS 0x00004000 /* receive incoming IP TOS */
#define IN6P_IPV6_V6ONLY 0x00008000 /* restrict AF_INET6 socket for v6 */
#define IN6P_PKTINFO 0x00010000 /* receive IP6 dst and I/F */
#define IN6P_HOPLIMIT 0x00020000 /* receive hoplimit */
#define IN6P_HOPOPTS 0x00040000 /* receive hop-by-hop options */
#define IN6P_DSTOPTS 0x00080000 /* receive dst options after rthdr */
#define IN6P_RTHDR 0x00100000 /* receive routing header */
#define IN6P_RTHDRDSTOPTS 0x00200000 /* receive dstoptions before rthdr */
#define IN6P_TCLASS 0x00400000 /* receive traffic class value */
#define IN6P_AUTOFLOWLABEL 0x00800000 /* attach flowlabel automatically */
/* INP_INLBGROUP 0x01000000 private to in_pcb.c */
#define INP_ONESBCAST 0x02000000 /* send all-ones broadcast */
#define INP_DROPPED 0x04000000 /* protocol drop flag */
#define INP_SOCKREF 0x08000000 /* strong socket reference */
#define INP_RESERVED_0 0x10000000 /* reserved field */
#define INP_RESERVED_1 0x20000000 /* reserved field */
#define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */
#define IN6P_MTU 0x80000000 /* receive path MTU */
#define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
INP_RECVIF|INP_RECVTTL|INP_RECVTOS|\
IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\
IN6P_MTU)
/*
* Flags for inp_flags2.
*/
/* 0x00000001 */
/* 0x00000002 */
/* 0x00000004 */
/* 0x00000008 */
/* 0x00000010 */
/* 0x00000020 */
/* 0x00000040 */
/* 0x00000080 */
#define INP_RECVFLOWID 0x00000100 /* populate recv datagram with flow info */
#define INP_RECVRSSBUCKETID 0x00000200 /* populate recv datagram with bucket id */
#define INP_RATE_LIMIT_CHANGED 0x00000400 /* rate limit needs attention */
#define INP_ORIGDSTADDR 0x00000800 /* receive IP dst address/port */
/* 0x00001000 */
/* 0x00002000 */
/* 0x00004000 */
/* 0x00008000 */
/* 0x00010000 */
#define INP_2PCP_SET 0x00020000 /* If the Eth PCP should be set explicitly */
#define INP_2PCP_BIT0 0x00040000 /* Eth PCP Bit 0 */
#define INP_2PCP_BIT1 0x00080000 /* Eth PCP Bit 1 */
#define INP_2PCP_BIT2 0x00100000 /* Eth PCP Bit 2 */
#define INP_2PCP_BASE INP_2PCP_BIT0
#define INP_2PCP_MASK (INP_2PCP_BIT0 | INP_2PCP_BIT1 | INP_2PCP_BIT2)
#define INP_2PCP_SHIFT 18 /* shift PCP field in/out of inp_flags2 */
/*
* Flags passed to in_pcblookup*(), inp_smr_lock() and inp_next().
*/
typedef enum {
INPLOOKUP_WILDCARD = 0x00000001, /* Allow wildcard sockets. */
INPLOOKUP_RLOCKPCB = 0x00000002, /* Return inpcb read-locked. */
INPLOOKUP_WLOCKPCB = 0x00000004, /* Return inpcb write-locked. */
} inp_lookup_t;
#define INPLOOKUP_MASK (INPLOOKUP_WILDCARD | INPLOOKUP_RLOCKPCB | \
INPLOOKUP_WLOCKPCB)
#define INPLOOKUP_LOCKMASK (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)
#define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
#define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
#define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af)
#ifdef _KERNEL
VNET_DECLARE(int, ipport_reservedhigh);
VNET_DECLARE(int, ipport_reservedlow);
VNET_DECLARE(int, ipport_lowfirstauto);
VNET_DECLARE(int, ipport_lowlastauto);
VNET_DECLARE(int, ipport_firstauto);
VNET_DECLARE(int, ipport_lastauto);
VNET_DECLARE(int, ipport_hifirstauto);
VNET_DECLARE(int, ipport_hilastauto);
VNET_DECLARE(int, ipport_randomized);
#define V_ipport_reservedhigh VNET(ipport_reservedhigh)
#define V_ipport_reservedlow VNET(ipport_reservedlow)
#define V_ipport_lowfirstauto VNET(ipport_lowfirstauto)
#define V_ipport_lowlastauto VNET(ipport_lowlastauto)
#define V_ipport_firstauto VNET(ipport_firstauto)
#define V_ipport_lastauto VNET(ipport_lastauto)
#define V_ipport_hifirstauto VNET(ipport_hifirstauto)
#define V_ipport_hilastauto VNET(ipport_hilastauto)
#define V_ipport_randomized VNET(ipport_randomized)
void in_pcbinfo_init(struct inpcbinfo *, struct inpcbstorage *,
u_int, u_int);
void in_pcbinfo_destroy(struct inpcbinfo *);
void in_pcbstorage_init(void *);
void in_pcbstorage_destroy(void *);
void in_pcbpurgeif0(struct inpcbinfo *, struct ifnet *);
int in_pcballoc(struct socket *, struct inpcbinfo *);
int in_pcbbind(struct inpcb *, struct sockaddr_in *, struct ucred *);
int in_pcbbind_setup(struct inpcb *, struct sockaddr_in *, in_addr_t *,
u_short *, struct ucred *);
int in_pcbconnect(struct inpcb *, struct sockaddr_in *, struct ucred *);
int in_pcbconnect_setup(struct inpcb *, struct sockaddr_in *, in_addr_t *,
u_short *, in_addr_t *, u_short *, struct ucred *);
void in_pcbdisconnect(struct inpcb *);
void in_pcbdrop(struct inpcb *);
void in_pcbfree(struct inpcb *);
int in_pcbinshash(struct inpcb *);
int in_pcbladdr(struct inpcb *, struct in_addr *, struct in_addr *,
struct ucred *);
int in_pcblbgroup_numa(struct inpcb *, int arg);
struct inpcb *
in_pcblookup(struct inpcbinfo *, struct in_addr, u_int,
struct in_addr, u_int, int, struct ifnet *);
struct inpcb *
in_pcblookup_mbuf(struct inpcbinfo *, struct in_addr, u_int,
struct in_addr, u_int, int, struct ifnet *, struct mbuf *);
void in_pcbref(struct inpcb *);
void in_pcbrehash(struct inpcb *);
void in_pcbremhash_locked(struct inpcb *);
bool in_pcbrele(struct inpcb *, inp_lookup_t);
bool in_pcbrele_rlocked(struct inpcb *);
bool in_pcbrele_wlocked(struct inpcb *);
typedef bool inp_match_t(const struct inpcb *, void *);
struct inpcb_iterator {
const struct inpcbinfo *ipi;
struct inpcb *inp;
inp_match_t *match;
void *ctx;
int hash;
#define INP_ALL_LIST -1
const inp_lookup_t lock;
};
/* Note: sparse initializers guarantee .inp = NULL. */
#define INP_ITERATOR(_ipi, _lock, _match, _ctx) \
{ \
.ipi = (_ipi), \
.lock = (_lock), \
.hash = INP_ALL_LIST, \
.match = (_match), \
.ctx = (_ctx), \
}
#define INP_ALL_ITERATOR(_ipi, _lock) \
{ \
.ipi = (_ipi), \
.lock = (_lock), \
.hash = INP_ALL_LIST, \
}
struct inpcb *inp_next(struct inpcb_iterator *);
void in_losing(struct inpcb *);
void in_pcbsetsolabel(struct socket *so);
int in_getpeeraddr(struct socket *, struct sockaddr *sa);
int in_getsockaddr(struct socket *, struct sockaddr *sa);
void in_pcbsosetlabel(struct socket *so);
#ifdef RATELIMIT
int
in_pcboutput_txrtlmt_locked(struct inpcb *, struct ifnet *,
struct mbuf *, uint32_t);
int in_pcbattach_txrtlmt(struct inpcb *, struct ifnet *, uint32_t, uint32_t,
uint32_t, struct m_snd_tag **);
void in_pcbdetach_txrtlmt(struct inpcb *);
void in_pcbdetach_tag(struct m_snd_tag *);
int in_pcbmodify_txrtlmt(struct inpcb *, uint32_t);
int in_pcbquery_txrtlmt(struct inpcb *, uint32_t *);
int in_pcbquery_txrlevel(struct inpcb *, uint32_t *);
void in_pcboutput_txrtlmt(struct inpcb *, struct ifnet *, struct mbuf *);
void in_pcboutput_eagain(struct inpcb *);
#endif
#endif /* _KERNEL */
#endif /* !_NETINET_IN_PCB_H_ */
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