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The pr_destroy field does not allow us to run the teardown code in a

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specific order.  VNET_SYSUNINITs however are doing exactly that.
Thus remove the VIMAGE conditional field from the domain(9) protosw
structure and replace it with VNET_SYSUNINITs.
This also allows us to change some order and to make the teardown functions
file local static.
Also convert divert(4) as it uses the same mechanism ip(4) and ip6(4) use
internally.

Slightly reshuffle the SI_SUB_* fields in kernel.h and add a new ones, e.g.,
for pfil consumers (firewalls), partially for this commit and for others
to come.

Reviewed by:		gnn, tuexen (sctp), jhb (kernel.h)
Obtained from:		projects/vnet
MFC after:		2 weeks
X-MFC:			do not remove pr_destroy
Sponsored by:		The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D6652
This commit is contained in:
Bjoern A. Zeeb 2016-06-01 10:14:04 +00:00
parent b7bb4816a0
commit 3f58662dd9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=301114
18 changed files with 38 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
share/man/man9/domain.9
View File

@ -26,7 +26,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd November 6, 2014
.Dd June 1, 2016
.Dt DOMAIN 9
.Os
.Sh NAME
@ -105,7 +105,6 @@ struct protosw {
pr_ctloutput_t *pr_ctloutput; /* control output (from above) */
/* utility hooks */
pr_init_t *pr_init;
pr_destroy_t *pr_destroy;
pr_fasttimo_t *pr_fasttimo; /* fast timeout (200ms) */
pr_slowtimo_t *pr_slowtimo; /* slow timeout (500ms) */
pr_drain_t *pr_drain; /* flush any excess space possible */

4
sys/kern/uipc_domain.c
View File

@ -196,11 +196,7 @@ void
vnet_domain_uninit(void *arg)
{
struct domain *dp = arg;
struct protosw *pr;
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_destroy)
(*pr->pr_destroy)();
if (dp->dom_destroy)
(*dp->dom_destroy)();
}

18
sys/netinet/in_proto.c
View File

@ -119,9 +119,6 @@ struct protosw inetsw[] = {
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_IP,
.pr_init = ip_init,
#ifdef VIMAGE
.pr_destroy = ip_destroy,
#endif
.pr_slowtimo = ip_slowtimo,
.pr_drain = ip_drain,
.pr_usrreqs = &nousrreqs
@ -135,9 +132,6 @@ struct protosw inetsw[] = {
.pr_ctlinput = udp_ctlinput,
.pr_ctloutput = udp_ctloutput,
.pr_init = udp_init,
#ifdef VIMAGE
.pr_destroy = udp_destroy,
#endif
.pr_usrreqs = &udp_usrreqs
},
{
@ -149,9 +143,6 @@ struct protosw inetsw[] = {
.pr_ctlinput = tcp_ctlinput,
.pr_ctloutput = tcp_ctloutput,
.pr_init = tcp_init,
#ifdef VIMAGE
.pr_destroy = tcp_destroy,
#endif
.pr_slowtimo = tcp_slowtimo,
.pr_drain = tcp_drain,
.pr_usrreqs = &tcp_usrreqs
@ -166,9 +157,6 @@ struct protosw inetsw[] = {
.pr_ctlinput = sctp_ctlinput,
.pr_ctloutput = sctp_ctloutput,
.pr_init = sctp_init,
#ifdef VIMAGE
.pr_destroy = sctp_finish,
#endif
.pr_drain = sctp_drain,
.pr_usrreqs = &sctp_usrreqs
},
@ -193,9 +181,6 @@ struct protosw inetsw[] = {
.pr_ctlinput = udplite_ctlinput,
.pr_ctloutput = udp_ctloutput,
.pr_init = udplite_init,
#ifdef VIMAGE
.pr_destroy = udplite_destroy,
#endif
.pr_usrreqs = &udp_usrreqs
},
{
@ -343,9 +328,6 @@ IPPROTOSPACER,
.pr_input = rip_input,
.pr_ctloutput = rip_ctloutput,
.pr_init = rip_init,
#ifdef VIMAGE
.pr_destroy = rip_destroy,
#endif
.pr_usrreqs = &rip_usrreqs
},
};

18
sys/netinet/ip_divert.c
View File

@ -162,11 +162,13 @@ div_init(void)
}
static void
div_destroy(void)
div_destroy(void *unused __unused)
{
in_pcbinfo_destroy(&V_divcbinfo);
}
VNET_SYSUNINIT(divert, SI_SUB_PROTO_DOMAININIT, SI_ORDER_ANY,
div_destroy, NULL);
/*
* IPPROTO_DIVERT is not in the real IP protocol number space; this
@ -755,9 +757,6 @@ struct protosw div_protosw = {
.pr_ctlinput = div_ctlinput,
.pr_ctloutput = ip_ctloutput,
.pr_init = div_init,
#ifdef VIMAGE
.pr_destroy = div_destroy,
#endif
.pr_usrreqs = &div_usrreqs
};
@ -789,10 +788,6 @@ div_modevent(module_t mod, int type, void *unused)
err = EPERM;
break;
case MOD_UNLOAD:
#ifdef VIMAGE
err = EPERM;
break;
#else
/*
* Forced unload.
*
@ -813,10 +808,11 @@ div_modevent(module_t mod, int type, void *unused)
ip_divert_ptr = NULL;
err = pf_proto_unregister(PF_INET, IPPROTO_DIVERT, SOCK_RAW);
INP_INFO_WUNLOCK(&V_divcbinfo);
div_destroy();
#ifndef VIMAGE
div_destroy(NULL);
#endif
EVENTHANDLER_DEREGISTER(maxsockets_change, ip_divert_event_tag);
break;
#endif /* !VIMAGE */
default:
err = EOPNOTSUPP;
break;
@ -830,6 +826,6 @@ static moduledata_t ipdivertmod = {
0
};
DECLARE_MODULE(ipdivert, ipdivertmod, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_ANY);
DECLARE_MODULE(ipdivert, ipdivertmod, SI_SUB_PROTO_FIREWALL, SI_ORDER_ANY);
MODULE_DEPEND(ipdivert, ipfw, 3, 3, 3);
MODULE_VERSION(ipdivert, 1);

6
sys/netinet/ip_input.c
View File

@ -361,8 +361,8 @@ ip_init(void)
}
#ifdef VIMAGE
void
ip_destroy(void)
static void
ip_destroy(void *unused __unused)
{
int error;
@ -388,6 +388,8 @@ ip_destroy(void)
/* Destroy IP reassembly queue. */
ipreass_destroy();
}
VNET_SYSUNINIT(ip, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, ip_destroy, NULL);
#endif
#ifdef RSS

6
sys/netinet/ip_var.h
View File

@ -209,9 +209,6 @@ int ip_fragment(struct ip *ip, struct mbuf **m_frag, int mtu,
u_long if_hwassist_flags);
void ip_forward(struct mbuf *m, int srcrt);
void ip_init(void);
#ifdef VIMAGE
void ip_destroy(void);
#endif
extern int
(*ip_mforward)(struct ip *, struct ifnet *, struct mbuf *,
struct ip_moptions *);
@ -229,9 +226,6 @@ void ip_fillid(struct ip *);
int rip_ctloutput(struct socket *, struct sockopt *);
void rip_ctlinput(int, struct sockaddr *, void *);
void rip_init(void);
#ifdef VIMAGE
void rip_destroy(void);
#endif
int rip_input(struct mbuf **, int *, int);
int rip_output(struct mbuf *, struct socket *, ...);
int ipip_input(struct mbuf **, int *, int);

5
sys/netinet/raw_ip.c
View File

@ -218,12 +218,13 @@ rip_init(void)
}
#ifdef VIMAGE
void
rip_destroy(void)
static void
rip_destroy(void *unused __unused)
{
in_pcbinfo_destroy(&V_ripcbinfo);
}
VNET_SYSUNINIT(raw_ip, SI_SUB_PROTO_DOMAIN, SI_ORDER_FOURTH, rip_destroy, NULL);
#endif
#ifdef INET

9
sys/netinet/sctp_usrreq.c
View File

@ -89,13 +89,14 @@ sctp_init(void)
#endif
}
void
sctp_finish(void)
#ifdef VIMAGE
static void
sctp_finish(void *unused __unused)
{
sctp_pcb_finish();
}
VNET_SYSUNINIT(sctp, SI_SUB_PROTO_DOMAIN, SI_ORDER_FOURTH, sctp_finish, NULL);
#endif
void
sctp_pathmtu_adjustment(struct sctp_tcb *stcb, uint16_t nxtsz)

1
sys/netinet/sctp_var.h
View File

@ -344,7 +344,6 @@ void sctp_init(void);
void
sctp_notify(struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *,
uint8_t, uint8_t, uint16_t, uint16_t);
void sctp_finish(void);
int sctp_flush(struct socket *, int);
int sctp_shutdown(struct socket *);
int

5
sys/netinet/tcp_subr.c
View File

@ -728,8 +728,8 @@ tcp_init(void)
}
#ifdef VIMAGE
void
tcp_destroy(void)
static void
tcp_destroy(void *unused __unused)
{
int error;
@ -772,6 +772,7 @@ tcp_destroy(void)
HHOOK_TYPE_TCP, HHOOK_TCP_EST_OUT, error);
}
}
VNET_SYSUNINIT(tcp, SI_SUB_PROTO_DOMAIN, SI_ORDER_FOURTH, tcp_destroy, NULL);
#endif
void

3
sys/netinet/tcp_var.h
View File

@ -755,9 +755,6 @@ struct tcpcb *
tcp_drop(struct tcpcb *, int);
void tcp_drain(void);
void tcp_init(void);
#ifdef VIMAGE
void tcp_destroy(void);
#endif
void tcp_fini(void *);
char *tcp_log_addrs(struct in_conninfo *, struct tcphdr *, void *,
const void *);

11
sys/netinet/udp_usrreq.c
View File

@ -269,20 +269,23 @@ udp_discardcb(struct udpcb *up)
}
#ifdef VIMAGE
void
udp_destroy(void)
static void
udp_destroy(void *unused __unused)
{
in_pcbinfo_destroy(&V_udbinfo);
uma_zdestroy(V_udpcb_zone);
}
VNET_SYSUNINIT(udp, SI_SUB_PROTO_DOMAIN, SI_ORDER_FOURTH, udp_destroy, NULL);
void
udplite_destroy(void)
static void
udplite_destroy(void *unused __unused)
{
in_pcbinfo_destroy(&V_ulitecbinfo);
}
VNET_SYSUNINIT(udplite, SI_SUB_PROTO_DOMAIN, SI_ORDER_FOURTH, udplite_destroy,
NULL);
#endif
#ifdef INET

4
sys/netinet/udp_var.h
View File

@ -171,10 +171,6 @@ void udplite_ctlinput(int, struct sockaddr *, void *);
int udp_ctloutput(struct socket *, struct sockopt *);
void udp_init(void);
void udplite_init(void);
#ifdef VIMAGE
void udp_destroy(void);
void udplite_destroy(void);
#endif
int udp_input(struct mbuf **, int *, int);
void udplite_input(struct mbuf *, int);
struct inpcb *udp_notify(struct inpcb *inp, int errno);

3
sys/netinet6/in6_proto.c
View File

@ -153,9 +153,6 @@ struct protosw inet6sw[] = {
.pr_domain = &inet6domain,
.pr_protocol = IPPROTO_IPV6,
.pr_init = ip6_init,
#ifdef VIMAGE
.pr_destroy = ip6_destroy,
#endif
.pr_slowtimo = frag6_slowtimo,
.pr_drain = frag6_drain,
.pr_usrreqs = &nousrreqs,

6
sys/netinet6/ip6_input.c
View File

@ -305,8 +305,8 @@ ip6proto_unregister(short ip6proto)
}
#ifdef VIMAGE
void
ip6_destroy()
static void
ip6_destroy(void *unused __unused)
{
int error;
@ -329,6 +329,8 @@ ip6_destroy()
nd6_destroy();
in6_ifattach_destroy();
}
VNET_SYSUNINIT(inet6, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, ip6_destroy, NULL);
#endif
static int

3
sys/netinet6/ip6_var.h
View File

@ -354,9 +354,6 @@ int icmp6_ctloutput(struct socket *, struct sockopt *sopt);
struct in6_ifaddr;
void ip6_init(void);
#ifdef VIMAGE
void ip6_destroy(void);
#endif
int ip6proto_register(short);
int ip6proto_unregister(short);

5
sys/sys/kernel.h
View File

@ -139,10 +139,13 @@ enum sysinit_sub_id {
SI_SUB_PSEUDO = 0x7000000, /* pseudo devices*/
SI_SUB_EXEC = 0x7400000, /* execve() handlers */
SI_SUB_PROTO_BEGIN = 0x8000000, /* VNET initialization */
SI_SUB_PROTO_PFIL = 0x8100000, /* Initialize pfil before FWs */
SI_SUB_PROTO_IF = 0x8400000, /* interfaces*/
SI_SUB_PROTO_DOMAININIT = 0x8600000, /* domain registration system */
SI_SUB_PROTO_MC = 0x8700000, /* Multicast */
SI_SUB_PROTO_DOMAIN = 0x8800000, /* domains (address families?)*/
SI_SUB_PROTO_IFATTACHDOMAIN = 0x8800001, /* domain dependent data init*/
SI_SUB_PROTO_FIREWALL = 0x8806000, /* Firewalls */
SI_SUB_PROTO_IFATTACHDOMAIN = 0x8808000,/* domain dependent data init */
SI_SUB_PROTO_END = 0x8ffffff, /* VNET helper functions */
SI_SUB_KPROF = 0x9000000, /* kernel profiling*/
SI_SUB_KICK_SCHEDULER = 0xa000000, /* start the timeout events*/

2
sys/sys/protosw.h
View File

@ -70,7 +70,6 @@ typedef int pr_output_t (struct mbuf *, struct socket *, ...);
typedef void pr_ctlinput_t (int, struct sockaddr *, void *);
typedef int pr_ctloutput_t (struct socket *, struct sockopt *);
typedef void pr_init_t (void);
typedef void pr_destroy_t (void);
typedef void pr_fasttimo_t (void);
typedef void pr_slowtimo_t (void);
typedef void pr_drain_t (void);
@ -87,7 +86,6 @@ struct protosw {
pr_ctloutput_t *pr_ctloutput; /* control output (from above) */
/* utility hooks */
pr_init_t *pr_init;
pr_destroy_t *pr_destroy;
pr_fasttimo_t *pr_fasttimo; /* fast timeout (200ms) */
pr_slowtimo_t *pr_slowtimo; /* slow timeout (500ms) */
pr_drain_t *pr_drain; /* flush any excess space possible */