svn commit: r191816 - in head/sys: conf dev/cxgb/ulp/tom kern net
net80211 netgraph netinet netinet6 netipsec nfsclient sys
Marko Zec
zec at FreeBSD.org
Tue May 5 10:56:14 UTC 2009
Author: zec
Date: Tue May 5 10:56:12 2009
New Revision: 191816
URL: http://svn.freebsd.org/changeset/base/191816
Log:
Change the curvnet variable from a global const struct vnet *,
previously always pointing to the default vnet context, to a
dynamically changing thread-local one. The currvnet context
should be set on entry to networking code via CURVNET_SET() macros,
and reverted to previous state via CURVNET_RESTORE(). Recursions
on curvnet are permitted, though strongly discuouraged.
This change should have no functional impact on nooptions VIMAGE
kernel builds, where CURVNET_* macros expand to whitespace.
The curthread->td_vnet (aka curvnet) variable's purpose is to be an
indicator of the vnet context in which the current network-related
operation takes place, in case we cannot deduce the current vnet
context from any other source, such as by looking at mbuf's
m->m_pkthdr.rcvif->if_vnet, sockets's so->so_vnet etc. Moreover, so
far curvnet has turned out to be an invaluable consistency checking
aid: it helps to catch cases when sockets, ifnets or any other
vnet-aware structures may have leaked from one vnet to another.
The exact placement of the CURVNET_SET() / CURVNET_RESTORE() macros
was a result of an empirical iterative process, whith an aim to
reduce recursions on CURVNET_SET() to a minimum, while still reducing
the scope of CURVNET_SET() to networking only operations - the
alternative would be calling CURVNET_SET() on each system call entry.
In general, curvnet has to be set in three typicall cases: when
processing socket-related requests from userspace or from within the
kernel; when processing inbound traffic flowing from device drivers
to upper layers of the networking stack, and when executing
timer-driven networking functions.
This change also introduces a DDB subcommand to show the list of all
vnet instances.
Approved by: julian (mentor)
Modified:
head/sys/conf/files
head/sys/dev/cxgb/ulp/tom/cxgb_cpl_io.c
head/sys/kern/init_main.c
head/sys/kern/kern_fork.c
head/sys/kern/kern_linker.c
head/sys/kern/kern_vimage.c
head/sys/kern/subr_pcpu.c
head/sys/kern/sys_socket.c
head/sys/kern/uipc_socket.c
head/sys/kern/uipc_syscalls.c
head/sys/kern/uipc_usrreq.c
head/sys/net/bpf.c
head/sys/net/if.c
head/sys/net/if_clone.c
head/sys/net/if_ethersubr.c
head/sys/net/if_var.h
head/sys/net/netisr.c
head/sys/net/rtsock.c
head/sys/net80211/ieee80211_freebsd.c
head/sys/netgraph/netgraph.h
head/sys/netinet/if_ether.c
head/sys/netinet/igmp.c
head/sys/netinet/in_rmx.c
head/sys/netinet/ip_input.c
head/sys/netinet/tcp_hostcache.c
head/sys/netinet6/in6_rmx.c
head/sys/netinet6/ip6_mroute.c
head/sys/netinet6/mld6.c
head/sys/netinet6/nd6.c
head/sys/netinet6/nd6_nbr.c
head/sys/netipsec/xform_tcp.c
head/sys/nfsclient/nfs_vnops.c
head/sys/sys/proc.h
head/sys/sys/ucred.h
head/sys/sys/vimage.h
Modified: head/sys/conf/files
==============================================================================
--- head/sys/conf/files Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/conf/files Tue May 5 10:56:12 2009 (r191816)
@@ -1952,8 +1952,8 @@ kern/kern_time.c standard
kern/kern_timeout.c standard
kern/kern_umtx.c standard
kern/kern_uuid.c standard
-kern/kern_xxx.c standard
kern/kern_vimage.c standard
+kern/kern_xxx.c standard
kern/link_elf.c standard
kern/linker_if.m standard
kern/md4c.c optional netsmb
Modified: head/sys/dev/cxgb/ulp/tom/cxgb_cpl_io.c
==============================================================================
--- head/sys/dev/cxgb/ulp/tom/cxgb_cpl_io.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/dev/cxgb/ulp/tom/cxgb_cpl_io.c Tue May 5 10:56:12 2009 (r191816)
@@ -1217,7 +1217,7 @@ install_offload_ops(struct socket *so)
* receive window.
*/
static __inline int
-select_rcv_wscale(int space)
+select_rcv_wscale(int space, struct vnet *vnet)
{
INIT_VNET_INET(so->so_vnet);
int wscale = 0;
@@ -1326,7 +1326,7 @@ static inline unsigned int
calc_opt0h(struct socket *so, int mtu_idx)
{
struct tcpcb *tp = so_sototcpcb(so);
- int wscale = select_rcv_wscale(tp->rcv_wnd);
+ int wscale = select_rcv_wscale(tp->rcv_wnd, so->so_vnet);
return V_NAGLE((tp->t_flags & TF_NODELAY) == 0) |
V_KEEP_ALIVE((so_options_get(so) & SO_KEEPALIVE) != 0) | F_TCAM_BYPASS |
Modified: head/sys/kern/init_main.c
==============================================================================
--- head/sys/kern/init_main.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/kern/init_main.c Tue May 5 10:56:12 2009 (r191816)
@@ -74,6 +74,7 @@ __FBSDID("$FreeBSD$");
#include <sys/malloc.h>
#include <sys/conf.h>
#include <sys/cpuset.h>
+#include <sys/vimage.h>
#include <machine/cpu.h>
@@ -452,6 +453,9 @@ proc0_init(void *dummy __unused)
p->p_ucred->cr_uidinfo = uifind(0);
p->p_ucred->cr_ruidinfo = uifind(0);
p->p_ucred->cr_prison = NULL; /* Don't jail it. */
+#ifdef VIMAGE
+ p->p_ucred->cr_vnet = LIST_FIRST(&vnet_head);
+#endif
#ifdef AUDIT
audit_cred_kproc0(p->p_ucred);
#endif
Modified: head/sys/kern/kern_fork.c
==============================================================================
--- head/sys/kern/kern_fork.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/kern/kern_fork.c Tue May 5 10:56:12 2009 (r191816)
@@ -68,6 +68,7 @@ __FBSDID("$FreeBSD$");
#include <sys/sdt.h>
#include <sys/sx.h>
#include <sys/signalvar.h>
+#include <sys/vimage.h>
#include <security/audit/audit.h>
#include <security/mac/mac_framework.h>
@@ -523,6 +524,11 @@ again:
td2->td_sigmask = td->td_sigmask;
td2->td_flags = TDF_INMEM;
+#ifdef VIMAGE
+ td2->td_vnet = NULL;
+ td2->td_vnet_lpush = NULL;
+#endif
+
/*
* Duplicate sub-structures as needed.
* Increase reference counts on shared objects.
Modified: head/sys/kern/kern_linker.c
==============================================================================
--- head/sys/kern/kern_linker.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/kern/kern_linker.c Tue May 5 10:56:12 2009 (r191816)
@@ -993,6 +993,12 @@ kern_kldload(struct thread *td, const ch
return (error);
/*
+ * It's possible that kldloaded module will attach a new ifnet,
+ * so vnet context must be set when this ocurs.
+ */
+ CURVNET_SET(TD_TO_VNET(td));
+
+ /*
* If file does not contain a qualified name or any dot in it
* (kldname.ko, or kldname.ver.ko) treat it as an interface
* name.
@@ -1019,6 +1025,7 @@ kern_kldload(struct thread *td, const ch
*fileid = lf->id;
unlock:
KLD_UNLOCK();
+ CURVNET_RESTORE();
return (error);
}
@@ -1056,6 +1063,7 @@ kern_kldunload(struct thread *td, int fi
if ((error = priv_check(td, PRIV_KLD_UNLOAD)) != 0)
return (error);
+ CURVNET_SET(TD_TO_VNET(td));
KLD_LOCK();
lf = linker_find_file_by_id(fileid);
if (lf) {
@@ -1092,6 +1100,7 @@ kern_kldunload(struct thread *td, int fi
PMC_CALL_HOOK(td, PMC_FN_KLD_UNLOAD, (void *) &pkm);
#endif
KLD_UNLOCK();
+ CURVNET_RESTORE();
return (error);
}
Modified: head/sys/kern/kern_vimage.c
==============================================================================
--- head/sys/kern/kern_vimage.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/kern/kern_vimage.c Tue May 5 10:56:12 2009 (r191816)
@@ -31,6 +31,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
+#include "opt_ddb.h"
+
#include <sys/param.h>
#include <sys/types.h>
#include <sys/kernel.h>
@@ -38,6 +40,9 @@ __FBSDID("$FreeBSD$");
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/vimage.h>
+#ifdef DDB
+#include <ddb/ddb.h>
+#endif
#ifndef VIMAGE_GLOBALS
@@ -51,8 +56,6 @@ static int vnet_mod_constructor(struct v
static int vnet_mod_destructor(struct vnet_modlink *);
#ifdef VIMAGE
-/* curvnet should be thread-local - this is only a temporary step. */
-struct vnet *curvnet;
struct vnet_list_head vnet_head;
#endif
@@ -183,7 +186,8 @@ vnet_mod_deregister_multi(const struct v
free(vml, M_VIMAGE);
}
-static int vnet_mod_constructor(struct vnet_modlink *vml)
+static int
+vnet_mod_constructor(struct vnet_modlink *vml)
{
const struct vnet_modinfo *vmi = vml->vml_modinfo;
@@ -303,7 +307,9 @@ vi_init(void *unused)
if (vnet == NULL)
panic("vi_alloc: malloc failed");
LIST_INSERT_HEAD(&vnet_head, vnet, vnet_le);
+ vnet->vnet_magic_n = VNET_MAGIC_N;
+ /* We MUST clear curvnet in vi_init_done before going SMP. */
curvnet = LIST_FIRST(&vnet_head);
#endif
}
@@ -313,6 +319,10 @@ vi_init_done(void *unused)
{
struct vnet_modlink *vml_iter;
+#ifdef VIMAGE
+ curvnet = NULL;
+#endif
+
if (TAILQ_EMPTY(&vnet_modpending_head))
return;
@@ -327,5 +337,45 @@ vi_init_done(void *unused)
SYSINIT(vimage, SI_SUB_VIMAGE, SI_ORDER_FIRST, vi_init, NULL);
SYSINIT(vimage_done, SI_SUB_VIMAGE_DONE, SI_ORDER_FIRST, vi_init_done, NULL);
-
#endif /* !VIMAGE_GLOBALS */
+
+#ifdef VIMAGE
+#ifdef DDB
+static void
+db_vnet_ptr(void *arg)
+{
+
+ if (arg)
+ db_printf(" %p", arg);
+ else
+#if SIZE_MAX == UINT32_MAX /* 32-bit arch */
+ db_printf(" 0");
+#else /* 64-bit arch, most probaly... */
+ db_printf(" 0");
+#endif
+}
+
+DB_SHOW_COMMAND(vnets, db_show_vnets)
+{
+ VNET_ITERATOR_DECL(vnet_iter);
+
+#if SIZE_MAX == UINT32_MAX /* 32-bit arch */
+ db_printf(" vnet ifs socks");
+ db_printf(" net inet inet6 ipsec netgraph\n");
+#else /* 64-bit arch, most probaly... */
+ db_printf(" vnet ifs socks");
+ db_printf(" net inet inet6 ipsec netgraph\n");
+#endif
+ VNET_FOREACH(vnet_iter) {
+ db_printf("%p %3d %5d",
+ vnet_iter, vnet_iter->ifccnt, vnet_iter->sockcnt);
+ db_vnet_ptr(vnet_iter->mod_data[VNET_MOD_NET]);
+ db_vnet_ptr(vnet_iter->mod_data[VNET_MOD_INET]);
+ db_vnet_ptr(vnet_iter->mod_data[VNET_MOD_INET6]);
+ db_vnet_ptr(vnet_iter->mod_data[VNET_MOD_IPSEC]);
+ db_vnet_ptr(vnet_iter->mod_data[VNET_MOD_NETGRAPH]);
+ db_printf("\n");
+ }
+}
+#endif
+#endif /* VIMAGE */
Modified: head/sys/kern/subr_pcpu.c
==============================================================================
--- head/sys/kern/subr_pcpu.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/kern/subr_pcpu.c Tue May 5 10:56:12 2009 (r191816)
@@ -135,6 +135,10 @@ show_pcpu(struct pcpu *pc)
db_printf("none\n");
db_show_mdpcpu(pc);
+#ifdef VIMAGE
+ db_printf("curvnet = %p\n", pc->pc_curthread->td_vnet);
+#endif
+
#ifdef WITNESS
db_printf("spin locks held:\n");
witness_list_locks(&pc->pc_spinlocks);
Modified: head/sys/kern/sys_socket.c
==============================================================================
--- head/sys/kern/sys_socket.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/kern/sys_socket.c Tue May 5 10:56:12 2009 (r191816)
@@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$");
#include <sys/stat.h>
#include <sys/uio.h>
#include <sys/ucred.h>
+#include <sys/vimage.h>
#include <net/if.h>
#include <net/route.h>
@@ -74,16 +75,19 @@ soo_read(struct file *fp, struct uio *ui
int flags, struct thread *td)
{
struct socket *so = fp->f_data;
-#ifdef MAC
int error;
+#ifdef MAC
SOCK_LOCK(so);
error = mac_socket_check_receive(active_cred, so);
SOCK_UNLOCK(so);
if (error)
return (error);
#endif
- return (soreceive(so, 0, uio, 0, 0, 0));
+ CURVNET_SET(so->so_vnet);
+ error = soreceive(so, 0, uio, 0, 0, 0);
+ CURVNET_RESTORE();
+ return (error);
}
/* ARGSUSED */
@@ -125,6 +129,7 @@ soo_ioctl(struct file *fp, u_long cmd, v
struct socket *so = fp->f_data;
int error = 0;
+ CURVNET_SET(so->so_vnet);
switch (cmd) {
case FIONBIO:
SOCK_LOCK(so);
@@ -205,6 +210,7 @@ soo_ioctl(struct file *fp, u_long cmd, v
(so, cmd, data, 0, td));
break;
}
+ CURVNET_RESTORE();
return (error);
}
Modified: head/sys/kern/uipc_socket.c
==============================================================================
--- head/sys/kern/uipc_socket.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/kern/uipc_socket.c Tue May 5 10:56:12 2009 (r191816)
@@ -264,7 +264,7 @@ SYSINIT(param, SI_SUB_TUNABLES, SI_ORDER
* soalloc() returns a socket with a ref count of 0.
*/
static struct socket *
-soalloc(void)
+soalloc(struct vnet *vnet)
{
struct socket *so;
@@ -286,7 +286,8 @@ soalloc(void)
so->so_gencnt = ++so_gencnt;
++numopensockets;
#ifdef VIMAGE
- so->so_vnet = curvnet;
+ ++vnet->sockcnt; /* locked with so_global_mtx */
+ so->so_vnet = vnet;
#endif
mtx_unlock(&so_global_mtx);
return (so);
@@ -307,6 +308,9 @@ sodealloc(struct socket *so)
mtx_lock(&so_global_mtx);
so->so_gencnt = ++so_gencnt;
--numopensockets; /* Could be below, but faster here. */
+#ifdef VIMAGE
+ --so->so_vnet->sockcnt;
+#endif
mtx_unlock(&so_global_mtx);
if (so->so_rcv.sb_hiwat)
(void)chgsbsize(so->so_cred->cr_uidinfo,
@@ -356,7 +360,7 @@ socreate(int dom, struct socket **aso, i
if (prp->pr_type != type)
return (EPROTOTYPE);
- so = soalloc();
+ so = soalloc(TD_TO_VNET(td));
if (so == NULL)
return (ENOBUFS);
@@ -382,7 +386,9 @@ socreate(int dom, struct socket **aso, i
* Auto-sizing of socket buffers is managed by the protocols and
* the appropriate flags must be set in the pru_attach function.
*/
+ CURVNET_SET(so->so_vnet);
error = (*prp->pr_usrreqs->pru_attach)(so, proto, td);
+ CURVNET_RESTORE();
if (error) {
KASSERT(so->so_count == 1, ("socreate: so_count %d",
so->so_count));
@@ -424,7 +430,8 @@ sonewconn(struct socket *head, int conns
if (over)
#endif
return (NULL);
- so = soalloc();
+ VNET_ASSERT(head->so_vnet);
+ so = soalloc(head->so_vnet);
if (so == NULL)
return (NULL);
if ((head->so_options & SO_ACCEPTFILTER) != 0)
@@ -496,8 +503,12 @@ sonewconn(struct socket *head, int conns
int
sobind(struct socket *so, struct sockaddr *nam, struct thread *td)
{
+ int error;
- return ((*so->so_proto->pr_usrreqs->pru_bind)(so, nam, td));
+ CURVNET_SET(so->so_vnet);
+ error = (*so->so_proto->pr_usrreqs->pru_bind)(so, nam, td);
+ CURVNET_RESTORE();
+ return error;
}
/*
@@ -645,6 +656,7 @@ soclose(struct socket *so)
KASSERT(!(so->so_state & SS_NOFDREF), ("soclose: SS_NOFDREF on enter"));
+ CURVNET_SET(so->so_vnet);
funsetown(&so->so_sigio);
if (so->so_state & SS_ISCONNECTED) {
if ((so->so_state & SS_ISDISCONNECTING) == 0) {
@@ -696,6 +708,7 @@ drop:
KASSERT((so->so_state & SS_NOFDREF) == 0, ("soclose: NOFDREF"));
so->so_state |= SS_NOFDREF;
sorele(so);
+ CURVNET_RESTORE();
return (error);
}
@@ -771,7 +784,9 @@ soconnect(struct socket *so, struct sock
* biting us.
*/
so->so_error = 0;
+ CURVNET_SET(so->so_vnet);
error = (*so->so_proto->pr_usrreqs->pru_connect)(so, nam, td);
+ CURVNET_RESTORE();
}
return (error);
@@ -1287,9 +1302,13 @@ int
sosend(struct socket *so, struct sockaddr *addr, struct uio *uio,
struct mbuf *top, struct mbuf *control, int flags, struct thread *td)
{
+ int error;
- return (so->so_proto->pr_usrreqs->pru_sosend(so, addr, uio, top,
- control, flags, td));
+ CURVNET_SET(so->so_vnet);
+ error = so->so_proto->pr_usrreqs->pru_sosend(so, addr, uio, top,
+ control, flags, td);
+ CURVNET_RESTORE();
+ return (error);
}
/*
@@ -2037,6 +2056,7 @@ int
soshutdown(struct socket *so, int how)
{
struct protosw *pr = so->so_proto;
+ int error;
if (!(how == SHUT_RD || how == SHUT_WR || how == SHUT_RDWR))
return (EINVAL);
@@ -2045,8 +2065,12 @@ soshutdown(struct socket *so, int how)
}
if (how != SHUT_WR)
sorflush(so);
- if (how != SHUT_RD)
- return ((*pr->pr_usrreqs->pru_shutdown)(so));
+ if (how != SHUT_RD) {
+ CURVNET_SET(so->so_vnet);
+ error = (*pr->pr_usrreqs->pru_shutdown)(so);
+ CURVNET_RESTORE();
+ return (error);
+ }
return (0);
}
@@ -2070,6 +2094,7 @@ sorflush(struct socket *so)
* socket buffer. Don't let our acquire be interrupted by a signal
* despite any existing socket disposition on interruptable waiting.
*/
+ CURVNET_SET(so->so_vnet);
socantrcvmore(so);
(void) sblock(sb, SBL_WAIT | SBL_NOINTR);
@@ -2093,6 +2118,7 @@ sorflush(struct socket *so)
if (pr->pr_flags & PR_RIGHTS && pr->pr_domain->dom_dispose != NULL)
(*pr->pr_domain->dom_dispose)(asb.sb_mb);
sbrelease_internal(&asb, so);
+ CURVNET_RESTORE();
}
/*
Modified: head/sys/kern/uipc_syscalls.c
==============================================================================
--- head/sys/kern/uipc_syscalls.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/kern/uipc_syscalls.c Tue May 5 10:56:12 2009 (r191816)
@@ -64,6 +64,7 @@ __FBSDID("$FreeBSD$");
#include <sys/sysctl.h>
#include <sys/uio.h>
#include <sys/vnode.h>
+#include <sys/vimage.h>
#ifdef KTRACE
#include <sys/ktrace.h>
#endif
@@ -264,7 +265,9 @@ listen(td, uap)
if (error)
goto done;
#endif
+ CURVNET_SET(so->so_vnet);
error = solisten(so, uap->backlog, td);
+ CURVNET_RESTORE();
#ifdef MAC
done:
#endif
@@ -429,7 +432,9 @@ kern_accept(struct thread *td, int s, st
tmp = fflag & FASYNC;
(void) fo_ioctl(nfp, FIOASYNC, &tmp, td->td_ucred, td);
sa = 0;
+ CURVNET_SET(so->so_vnet);
error = soaccept(so, &sa);
+ CURVNET_RESTORE();
if (error) {
/*
* return a namelen of zero for older code which might
@@ -976,9 +981,11 @@ kern_recvit(td, s, mp, fromseg, controlp
ktruio = cloneuio(&auio);
#endif
len = auio.uio_resid;
+ CURVNET_SET(so->so_vnet);
error = soreceive(so, &fromsa, &auio, (struct mbuf **)0,
(mp->msg_control || controlp) ? &control : (struct mbuf **)0,
&mp->msg_flags);
+ CURVNET_RESTORE();
if (error) {
if (auio.uio_resid != (int)len && (error == ERESTART ||
error == EINTR || error == EWOULDBLOCK))
@@ -1322,7 +1329,9 @@ kern_setsockopt(td, s, level, name, val,
error = getsock(td->td_proc->p_fd, s, &fp, NULL);
if (error == 0) {
so = fp->f_data;
+ CURVNET_SET(so->so_vnet);
error = sosetopt(so, &sopt);
+ CURVNET_RESTORE();
fdrop(fp, td);
}
return(error);
@@ -1400,7 +1409,9 @@ kern_getsockopt(td, s, level, name, val,
error = getsock(td->td_proc->p_fd, s, &fp, NULL);
if (error == 0) {
so = fp->f_data;
+ CURVNET_SET(so->so_vnet);
error = sogetopt(so, &sopt);
+ CURVNET_RESTORE();
*valsize = sopt.sopt_valsize;
fdrop(fp, td);
}
@@ -1463,7 +1474,9 @@ kern_getsockname(struct thread *td, int
return (error);
so = fp->f_data;
*sa = NULL;
+ CURVNET_SET(so->so_vnet);
error = (*so->so_proto->pr_usrreqs->pru_sockaddr)(so, sa);
+ CURVNET_RESTORE();
if (error)
goto bad;
if (*sa == NULL)
@@ -1564,7 +1577,9 @@ kern_getpeername(struct thread *td, int
goto done;
}
*sa = NULL;
+ CURVNET_SET(so->so_vnet);
error = (*so->so_proto->pr_usrreqs->pru_peeraddr)(so, sa);
+ CURVNET_RESTORE();
if (error)
goto bad;
if (*sa == NULL)
@@ -2176,9 +2191,11 @@ retry_space:
goto done;
}
SOCKBUF_UNLOCK(&so->so_snd);
+ CURVNET_SET(so->so_vnet);
/* Avoid error aliasing. */
err = (*so->so_proto->pr_usrreqs->pru_send)
(so, 0, m, NULL, NULL, td);
+ CURVNET_RESTORE();
if (err == 0) {
/*
* We need two counters to get the
Modified: head/sys/kern/uipc_usrreq.c
==============================================================================
--- head/sys/kern/uipc_usrreq.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/kern/uipc_usrreq.c Tue May 5 10:56:12 2009 (r191816)
@@ -90,6 +90,7 @@ __FBSDID("$FreeBSD$");
#include <sys/un.h>
#include <sys/unpcb.h>
#include <sys/vnode.h>
+#include <sys/vimage.h>
#ifdef DDB
#include <ddb/ddb.h>
@@ -1647,6 +1648,10 @@ static void
unp_init(void)
{
+#ifdef VIMAGE
+ if (!IS_DEFAULT_VNET(curvnet))
+ return;
+#endif
unp_zone = uma_zcreate("unpcb", sizeof(struct unpcb), NULL, NULL,
NULL, NULL, UMA_ALIGN_PTR, 0);
if (unp_zone == NULL)
Modified: head/sys/net/bpf.c
==============================================================================
--- head/sys/net/bpf.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/net/bpf.c Tue May 5 10:56:12 2009 (r191816)
@@ -873,11 +873,10 @@ bpfwrite(struct cdev *dev, struct uio *u
m->m_len -= hlen;
m->m_data += hlen; /* XXX */
+ CURVNET_SET(ifp->if_vnet);
#ifdef MAC
BPFD_LOCK(d);
- CURVNET_SET(ifp->if_vnet);
mac_bpfdesc_create_mbuf(d, m);
- CURVNET_RESTORE();
if (mc != NULL)
mac_bpfdesc_create_mbuf(d, mc);
BPFD_UNLOCK(d);
@@ -893,6 +892,7 @@ bpfwrite(struct cdev *dev, struct uio *u
else
m_freem(mc);
}
+ CURVNET_RESTORE();
return (error);
}
Modified: head/sys/net/if.c
==============================================================================
--- head/sys/net/if.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/net/if.c Tue May 5 10:56:12 2009 (r191816)
@@ -53,6 +53,7 @@
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/refcount.h>
+#include <sys/module.h>
#include <sys/rwlock.h>
#include <sys/sockio.h>
#include <sys/syslog.h>
@@ -126,7 +127,6 @@ static void if_attachdomain(void *);
static void if_attachdomain1(struct ifnet *);
static int ifconf(u_long, caddr_t);
static void if_freemulti(struct ifmultiaddr *);
-static void if_grow(void);
static void if_init(void *);
static void if_check(void *);
static void if_route(struct ifnet *, int flag, int fam);
@@ -202,7 +202,7 @@ MALLOC_DEFINE(M_IFNET, "ifnet", "interfa
MALLOC_DEFINE(M_IFADDR, "ifaddr", "interface address");
MALLOC_DEFINE(M_IFMADDR, "ether_multi", "link-level multicast address");
-static struct ifnet *
+struct ifnet *
ifnet_byindex_locked(u_short idx)
{
INIT_VNET_NET(curvnet);
@@ -239,7 +239,7 @@ ifnet_byindex_ref(u_short idx)
return (ifp);
}
-static void
+void
ifnet_setbyindex(u_short idx, struct ifnet *ifp)
{
INIT_VNET_NET(curvnet);
@@ -445,7 +445,7 @@ vnet_net_iattach(const void *unused __un
return (0);
}
-static void
+void
if_grow(void)
{
INIT_VNET_NET(curvnet);
@@ -696,11 +696,13 @@ if_attach(struct ifnet *ifp)
mac_ifnet_create(ifp);
#endif
- ifdev_setbyindex(ifp->if_index, make_dev(&net_cdevsw,
- ifp->if_index, UID_ROOT, GID_WHEEL, 0600, "%s/%s",
- net_cdevsw.d_name, ifp->if_xname));
- make_dev_alias(ifdev_byindex(ifp->if_index), "%s%d",
- net_cdevsw.d_name, ifp->if_index);
+ if (IS_DEFAULT_VNET(curvnet)) {
+ ifdev_setbyindex(ifp->if_index, make_dev(&net_cdevsw,
+ ifp->if_index, UID_ROOT, GID_WHEEL, 0600, "%s/%s",
+ net_cdevsw.d_name, ifp->if_xname));
+ make_dev_alias(ifdev_byindex(ifp->if_index), "%s%d",
+ net_cdevsw.d_name, ifp->if_index);
+ }
ifq_attach(&ifp->if_snd, ifp);
@@ -742,13 +744,17 @@ if_attach(struct ifnet *ifp)
IFNET_WLOCK();
TAILQ_INSERT_TAIL(&V_ifnet, ifp, if_link);
+#ifdef VIMAGE
+ curvnet->ifccnt++;
+#endif
IFNET_WUNLOCK();
if (domain_init_status >= 2)
if_attachdomain1(ifp);
EVENTHANDLER_INVOKE(ifnet_arrival_event, ifp);
- devctl_notify("IFNET", ifp->if_xname, "ATTACH", NULL);
+ if (IS_DEFAULT_VNET(curvnet))
+ devctl_notify("IFNET", ifp->if_xname, "ATTACH", NULL);
/* Announce the interface. */
rt_ifannouncemsg(ifp, IFAN_ARRIVAL);
@@ -895,6 +901,10 @@ if_detach(struct ifnet *ifp)
found = 1;
break;
}
+#ifdef VIMAGE
+ if (found)
+ curvnet->ifccnt--;
+#endif
IFNET_WUNLOCK();
if (!found)
return;
@@ -943,7 +953,8 @@ if_detach(struct ifnet *ifp)
* Clean up all addresses.
*/
ifp->if_addr = NULL;
- destroy_dev(ifdev_byindex(ifp->if_index));
+ if (IS_DEFAULT_VNET(curvnet))
+ destroy_dev(ifdev_byindex(ifp->if_index));
ifdev_setbyindex(ifp->if_index, NULL);
/* We can now free link ifaddr. */
@@ -972,7 +983,8 @@ if_detach(struct ifnet *ifp)
/* Announce that the interface is gone. */
rt_ifannouncemsg(ifp, IFAN_DEPARTURE);
EVENTHANDLER_INVOKE(ifnet_departure_event, ifp);
- devctl_notify("IFNET", ifp->if_xname, "DETACH", NULL);
+ if (IS_DEFAULT_VNET(curvnet))
+ devctl_notify("IFNET", ifp->if_xname, "DETACH", NULL);
if_delgroups(ifp);
IF_AFDATA_LOCK(ifp);
@@ -1701,8 +1713,10 @@ do_link_state_change(void *arg, int pend
(*lagg_linkstate_p)(ifp, link_state);
}
- devctl_notify("IFNET", ifp->if_xname,
- (link_state == LINK_STATE_UP) ? "LINK_UP" : "LINK_DOWN", NULL);
+ if (IS_DEFAULT_VNET(curvnet))
+ devctl_notify("IFNET", ifp->if_xname,
+ (link_state == LINK_STATE_UP) ? "LINK_UP" : "LINK_DOWN",
+ NULL);
if (pending > 1)
if_printf(ifp, "%d link states coalesced\n", pending);
if (log_link_state_change)
Modified: head/sys/net/if_clone.c
==============================================================================
--- head/sys/net/if_clone.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/net/if_clone.c Tue May 5 10:56:12 2009 (r191816)
@@ -39,6 +39,7 @@
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/socket.h>
+#include <sys/vimage.h>
#include <net/if.h>
#include <net/if_clone.h>
@@ -49,6 +50,7 @@
#include <net/if_var.h>
#include <net/radix.h>
#include <net/route.h>
+#include <net/vnet.h>
static void if_clone_free(struct if_clone *ifc);
static int if_clone_createif(struct if_clone *ifc, char *name, size_t len,
@@ -203,15 +205,14 @@ if_clone_destroyif(struct if_clone *ifc,
{
int err;
- if (ifc->ifc_destroy == NULL) {
- err = EOPNOTSUPP;
- goto done;
- }
+ if (ifc->ifc_destroy == NULL)
+ return(EOPNOTSUPP);
IF_CLONE_LOCK(ifc);
IFC_IFLIST_REMOVE(ifc, ifp);
IF_CLONE_UNLOCK(ifc);
+ CURVNET_SET_QUIET(ifp->if_vnet);
if_delgroup(ifp, ifc->ifc_name);
err = (*ifc->ifc_destroy)(ifc, ifp);
@@ -223,8 +224,7 @@ if_clone_destroyif(struct if_clone *ifc,
IFC_IFLIST_INSERT(ifc, ifp);
IF_CLONE_UNLOCK(ifc);
}
-
-done:
+ CURVNET_RESTORE();
return (err);
}
Modified: head/sys/net/if_ethersubr.c
==============================================================================
--- head/sys/net/if_ethersubr.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/net/if_ethersubr.c Tue May 5 10:56:12 2009 (r191816)
@@ -602,6 +602,8 @@ ether_input(struct ifnet *ifp, struct mb
}
#endif
+ CURVNET_SET_QUIET(ifp->if_vnet);
+
if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
if (ETHER_IS_BROADCAST(eh->ether_dhost))
m->m_flags |= M_BCAST;
@@ -638,6 +640,7 @@ ether_input(struct ifnet *ifp, struct mb
/* Allow monitor mode to claim this frame, after stats are updated. */
if (ifp->if_flags & IFF_MONITOR) {
m_freem(m);
+ CURVNET_RESTORE();
return;
}
@@ -686,8 +689,10 @@ ether_input(struct ifnet *ifp, struct mb
("%s: ng_ether_input_p is NULL", __func__));
m->m_flags &= ~M_PROMISC;
(*ng_ether_input_p)(ifp, &m);
- if (m == NULL)
+ if (m == NULL) {
+ CURVNET_RESTORE();
return;
+ }
}
/*
@@ -698,8 +703,10 @@ ether_input(struct ifnet *ifp, struct mb
if (ifp->if_bridge != NULL) {
m->m_flags &= ~M_PROMISC;
BRIDGE_INPUT(ifp, m);
- if (m == NULL)
+ if (m == NULL) {
+ CURVNET_RESTORE();
return;
+ }
}
#ifdef DEV_CARP
@@ -735,6 +742,7 @@ ether_input(struct ifnet *ifp, struct mb
random_harvest(m, 16, 3, 0, RANDOM_NET);
ether_demux(ifp, m);
+ CURVNET_RESTORE();
}
/*
Modified: head/sys/net/if_var.h
==============================================================================
--- head/sys/net/if_var.h Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/net/if_var.h Tue May 5 10:56:12 2009 (r191816)
@@ -731,7 +731,9 @@ struct ifindex_entry {
* to call ifnet_byindex() instead if ifnet_byindex_ref().
*/
struct ifnet *ifnet_byindex(u_short idx);
+struct ifnet *ifnet_byindex_locked(u_short idx);
struct ifnet *ifnet_byindex_ref(u_short idx);
+void ifnet_setbyindex(u_short idx, struct ifnet *ifp);
/*
* Given the index, ifaddr_byindex() returns the one and only
@@ -755,6 +757,7 @@ int if_allmulti(struct ifnet *, int);
struct ifnet* if_alloc(u_char);
void if_attach(struct ifnet *);
void if_dead(struct ifnet *);
+void if_grow(void);
int if_delmulti(struct ifnet *, struct sockaddr *);
void if_delmulti_ifma(struct ifmultiaddr *);
void if_detach(struct ifnet *);
Modified: head/sys/net/netisr.c
==============================================================================
--- head/sys/net/netisr.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/net/netisr.c Tue May 5 10:56:12 2009 (r191816)
@@ -43,6 +43,7 @@
#include <sys/resourcevar.h>
#include <sys/sysctl.h>
#include <sys/unistd.h>
+#include <sys/vimage.h>
#include <machine/atomic.h>
#include <machine/cpu.h>
#include <machine/stdarg.h>
@@ -142,7 +143,10 @@ netisr_processqueue(struct netisr *ni)
IF_DEQUEUE(ni->ni_queue, m);
if (m == NULL)
break;
+ VNET_ASSERT(m->m_pkthdr.rcvif != NULL);
+ CURVNET_SET(m->m_pkthdr.rcvif->if_vnet);
ni->ni_handler(m);
+ CURVNET_RESTORE();
}
}
Modified: head/sys/net/rtsock.c
==============================================================================
--- head/sys/net/rtsock.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/net/rtsock.c Tue May 5 10:56:12 2009 (r191816)
@@ -1206,6 +1206,7 @@ rt_ifannouncemsg(struct ifnet *ifp, int
static void
rt_dispatch(struct mbuf *m, const struct sockaddr *sa)
{
+ INIT_VNET_NET(curvnet);
struct m_tag *tag;
/*
@@ -1223,6 +1224,14 @@ rt_dispatch(struct mbuf *m, const struct
*(unsigned short *)(tag + 1) = sa->sa_family;
m_tag_prepend(m, tag);
}
+#ifdef VIMAGE
+ if (V_loif)
+ m->m_pkthdr.rcvif = V_loif;
+ else {
+ m_freem(m);
+ return;
+ }
+#endif
netisr_queue(NETISR_ROUTE, m); /* mbuf is free'd on failure. */
}
Modified: head/sys/net80211/ieee80211_freebsd.c
==============================================================================
--- head/sys/net80211/ieee80211_freebsd.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/net80211/ieee80211_freebsd.c Tue May 5 10:56:12 2009 (r191816)
@@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$");
#include <sys/sysctl.h>
#include <sys/socket.h>
+#include <sys/vimage.h>
#include <net/if.h>
#include <net/if_dl.h>
@@ -498,9 +499,11 @@ notify_macaddr(struct ifnet *ifp, int op
{
struct ieee80211_join_event iev;
+ CURVNET_SET(ifp->if_vnet);
memset(&iev, 0, sizeof(iev));
IEEE80211_ADDR_COPY(iev.iev_addr, mac);
rt_ieee80211msg(ifp, op, &iev, sizeof(iev));
+ CURVNET_RESTORE();
}
void
@@ -509,6 +512,7 @@ ieee80211_notify_node_join(struct ieee80
struct ieee80211vap *vap = ni->ni_vap;
struct ifnet *ifp = vap->iv_ifp;
+ CURVNET_SET_QUIET(ifp->if_vnet);
IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode join",
(ni == vap->iv_bss) ? "bss " : "");
@@ -520,6 +524,7 @@ ieee80211_notify_node_join(struct ieee80
notify_macaddr(ifp, newassoc ?
RTM_IEEE80211_JOIN : RTM_IEEE80211_REJOIN, ni->ni_macaddr);
}
+ CURVNET_RESTORE();
}
void
@@ -528,6 +533,7 @@ ieee80211_notify_node_leave(struct ieee8
struct ieee80211vap *vap = ni->ni_vap;
struct ifnet *ifp = vap->iv_ifp;
+ CURVNET_SET_QUIET(ifp->if_vnet);
IEEE80211_NOTE(vap, IEEE80211_MSG_NODE, ni, "%snode leave",
(ni == vap->iv_bss) ? "bss " : "");
@@ -538,6 +544,7 @@ ieee80211_notify_node_leave(struct ieee8
/* fire off wireless event station leaving */
notify_macaddr(ifp, RTM_IEEE80211_LEAVE, ni->ni_macaddr);
}
+ CURVNET_RESTORE();
}
void
@@ -548,7 +555,9 @@ ieee80211_notify_scan_done(struct ieee80
IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done");
/* dispatch wireless event indicating scan completed */
+ CURVNET_SET(ifp->if_vnet);
rt_ieee80211msg(ifp, RTM_IEEE80211_SCAN, NULL, 0);
+ CURVNET_RESTORE();
}
void
@@ -576,7 +585,9 @@ ieee80211_notify_replay_failure(struct i
iev.iev_keyix = k->wk_keyix;
iev.iev_keyrsc = k->wk_keyrsc[0]; /* XXX need tid */
iev.iev_rsc = rsc;
+ CURVNET_SET(ifp->if_vnet);
rt_ieee80211msg(ifp, RTM_IEEE80211_REPLAY, &iev, sizeof(iev));
+ CURVNET_RESTORE();
}
}
@@ -597,7 +608,9 @@ ieee80211_notify_michael_failure(struct
IEEE80211_ADDR_COPY(iev.iev_src, wh->i_addr2);
iev.iev_cipher = IEEE80211_CIPHER_TKIP;
iev.iev_keyix = keyix;
+ CURVNET_SET(ifp->if_vnet);
rt_ieee80211msg(ifp, RTM_IEEE80211_MICHAEL, &iev, sizeof(iev));
+ CURVNET_RESTORE();
}
}
Modified: head/sys/netgraph/netgraph.h
==============================================================================
--- head/sys/netgraph/netgraph.h Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/netgraph/netgraph.h Tue May 5 10:56:12 2009 (r191816)
@@ -352,6 +352,7 @@ struct ng_node {
LIST_ENTRY(ng_node) nd_idnodes; /* ID hash collision list */
struct ng_queue nd_input_queue; /* input queue for locking */
int nd_refs; /* # of references to this node */
+ struct vnet *nd_vnet; /* network stack instance */
#ifdef NETGRAPH_DEBUG /*----------------------------------------------*/
#define ND_MAGIC 0x59264837
int nd_magic;
Modified: head/sys/netinet/if_ether.c
==============================================================================
--- head/sys/netinet/if_ether.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/netinet/if_ether.c Tue May 5 10:56:12 2009 (r191816)
@@ -143,10 +143,12 @@ arp_ifscrub(struct ifnet *ifp, uint32_t
addr4.sin_len = sizeof(addr4);
addr4.sin_family = AF_INET;
addr4.sin_addr.s_addr = addr;
+ CURVNET_SET(ifp->if_vnet);
IF_AFDATA_LOCK(ifp);
lla_lookup(LLTABLE(ifp), (LLE_DELETE | LLE_IFADDR),
(struct sockaddr *)&addr4);
IF_AFDATA_UNLOCK(ifp);
+ CURVNET_RESTORE();
}
#endif
Modified: head/sys/netinet/igmp.c
==============================================================================
--- head/sys/netinet/igmp.c Tue May 5 10:46:49 2009 (r191815)
+++ head/sys/netinet/igmp.c Tue May 5 10:56:12 2009 (r191816)
@@ -1117,6 +1117,9 @@ igmp_input_v3_group_query(struct in_mult
nsrc = ntohs(igmpv3->igmp_numsrc);
+ if (!IS_DEFAULT_VNET(curvnet))
+ return (retval);
+
/*
* Deal with group-specific queries upfront.
* If any group query is already pending, purge any recorded
@@ -3372,7 +3375,7 @@ igmp_intr(struct mbuf *m)
* indexes to guard against interface detach, they are
* unique to each VIMAGE and must be retrieved.
*/
- CURVNET_SET(m->m_pkthdr.header);
+ CURVNET_SET((struct vnet *)(m->m_pkthdr.header));
INIT_VNET_NET(curvnet);
INIT_VNET_INET(curvnet);
ifindex = igmp_restore_context(m);
@@ -3654,9 +3657,7 @@ igmp_modevent(module_t mod, int type, vo
break;
case MOD_UNLOAD:
#ifndef VIMAGE_GLOBALS
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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