#include <sys/param.h>
#include <sys/systm.h>
#include <sys/domain.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/signalvar.h>
#include <sys/sysctl.h>
#include <sys/ev.h>
#include <sys/kdebug.h>
#define DBG_FNC_SBDROP NETDBG_CODE(DBG_NETSOCK, 4)
#define DBG_FNC_SBAPPEND NETDBG_CODE(DBG_NETSOCK, 5)
u_long sb_max = SB_MAX;
static u_long sb_efficiency = 8;
void
soisconnecting(so)
register struct socket *so;
{
so->so_state &= ~(SS_ISCONNECTED|SS_ISDISCONNECTING);
so->so_state |= SS_ISCONNECTING;
}
void
soisconnected(so)
struct socket *so;
{
struct socket *head = so->so_head;
struct kextcb *kp;
kp = sotokextcb(so);
while (kp) {
if (kp->e_soif && kp->e_soif->sf_soisconnected) {
if ((*kp->e_soif->sf_soisconnected)(so, kp))
return;
}
kp = kp->e_next;
}
so->so_state &= ~(SS_ISCONNECTING|SS_ISDISCONNECTING|SS_ISCONFIRMING);
so->so_state |= SS_ISCONNECTED;
if (head && (so->so_state & SS_INCOMP)) {
postevent(head,0,EV_RCONN);
TAILQ_REMOVE(&head->so_incomp, so, so_list);
head->so_incqlen--;
so->so_state &= ~SS_INCOMP;
TAILQ_INSERT_TAIL(&head->so_comp, so, so_list);
so->so_state |= SS_COMP;
sorwakeup(head);
wakeup_one(&head->so_timeo);
} else {
postevent(so,0,EV_WCONN);
wakeup((caddr_t)&so->so_timeo);
sorwakeup(so);
sowwakeup(so);
}
}
void
soisdisconnecting(so)
register struct socket *so;
{
register struct kextcb *kp;
kp = sotokextcb(so);
while (kp) {
if (kp->e_soif && kp->e_soif->sf_soisdisconnecting) {
if ((*kp->e_soif->sf_soisdisconnecting)(so, kp))
return;
}
kp = kp->e_next;
}
so->so_state &= ~SS_ISCONNECTING;
so->so_state |= (SS_ISDISCONNECTING|SS_CANTRCVMORE|SS_CANTSENDMORE);
wakeup((caddr_t)&so->so_timeo);
sowwakeup(so);
sorwakeup(so);
}
void
soisdisconnected(so)
register struct socket *so;
{
register struct kextcb *kp;
kp = sotokextcb(so);
while (kp) {
if (kp->e_soif && kp->e_soif->sf_soisdisconnected) {
if ((*kp->e_soif->sf_soisdisconnected)(so, kp))
return;
}
kp = kp->e_next;
}
so->so_state &= ~(SS_ISCONNECTING|SS_ISCONNECTED|SS_ISDISCONNECTING);
so->so_state |= (SS_CANTRCVMORE|SS_CANTSENDMORE|SS_ISDISCONNECTED);
wakeup((caddr_t)&so->so_timeo);
sowwakeup(so);
sorwakeup(so);
}
struct socket *
sodropablereq(head)
register struct socket *head;
{
register struct socket *so;
unsigned int i, j, qlen;
static int rnd;
static struct timeval old_runtime;
static unsigned int cur_cnt, old_cnt;
struct timeval tv;
microtime(&tv);
if ((i = (tv.tv_sec - old_runtime.tv_sec)) != 0) {
old_runtime = tv;
old_cnt = cur_cnt / i;
cur_cnt = 0;
}
so = TAILQ_FIRST(&head->so_incomp);
if (!so)
return (so);
qlen = head->so_incqlen;
if (++cur_cnt > qlen || old_cnt > qlen) {
rnd = (314159 * rnd + 66329) & 0xffff;
j = ((qlen + 1) * rnd) >> 16;
while (j-- && so)
so = TAILQ_NEXT(so, so_list);
}
return (so);
}
struct socket *
sonewconn(head, connstatus)
register struct socket *head;
int connstatus;
{
int error = 0;
register struct socket *so;
register struct kextcb *kp;
if (head->so_qlen > 3 * head->so_qlimit / 2)
return ((struct socket *)0);
so = soalloc(1, head->so_proto->pr_domain->dom_family, head->so_type);
if (so == NULL)
return ((struct socket *)0);
if (head->so_proto == NULL) {
sodealloc(so);
return ((struct socket *)0);
}
so->so_head = head;
so->so_type = head->so_type;
so->so_options = head->so_options &~ SO_ACCEPTCONN;
so->so_linger = head->so_linger;
so->so_state = head->so_state | SS_NOFDREF;
so->so_proto = head->so_proto;
so->so_timeo = head->so_timeo;
so->so_pgid = head->so_pgid;
so->so_uid = head->so_uid;
if (so->so_proto->pr_sfilter.tqh_first)
error = sfilter_init(so);
if (error != 0) {
sodealloc(so);
return ((struct socket *)0);
}
kp = sotokextcb(so);
while (kp) {
if (kp->e_soif && kp->e_soif->sf_sonewconn) {
error = (int)(*kp->e_soif->sf_sonewconn)(so, connstatus, kp);
if (error == EJUSTRETURN) {
return so;
} else if (error != 0) {
sodealloc(so);
return NULL;
}
}
kp = kp->e_next;
}
if (soreserve(so, head->so_snd.sb_hiwat, head->so_rcv.sb_hiwat) ||
(*so->so_proto->pr_usrreqs->pru_attach)(so, 0, NULL)) {
sfilter_term(so);
sodealloc(so);
return ((struct socket *)0);
}
#ifdef __APPLE__
so->so_proto->pr_domain->dom_refs++;
#endif
if (connstatus) {
TAILQ_INSERT_TAIL(&head->so_comp, so, so_list);
so->so_state |= SS_COMP;
} else {
TAILQ_INSERT_TAIL(&head->so_incomp, so, so_list);
so->so_state |= SS_INCOMP;
head->so_incqlen++;
}
head->so_qlen++;
if (connstatus) {
sorwakeup(head);
wakeup((caddr_t)&head->so_timeo);
so->so_state |= connstatus;
}
#ifdef __APPLE__
so->so_rcv.sb_so = so->so_snd.sb_so = so;
TAILQ_INIT(&so->so_evlist);
#endif
return (so);
}
void
socantsendmore(so)
struct socket *so;
{
register struct kextcb *kp;
kp = sotokextcb(so);
while (kp) {
if (kp->e_soif && kp->e_soif->sf_socantsendmore) {
if ((*kp->e_soif->sf_socantsendmore)(so, kp))
return;
}
kp = kp->e_next;
}
so->so_state |= SS_CANTSENDMORE;
sowwakeup(so);
}
void
socantrcvmore(so)
struct socket *so;
{
register struct kextcb *kp;
kp = sotokextcb(so);
while (kp) {
if (kp->e_soif && kp->e_soif->sf_socantrcvmore) {
if ((*kp->e_soif->sf_socantrcvmore)(so, kp))
return;
}
kp = kp->e_next;
}
so->so_state |= SS_CANTRCVMORE;
sorwakeup(so);
}
int
sbwait(sb)
struct sockbuf *sb;
{
sb->sb_flags |= SB_WAIT;
return (tsleep((caddr_t)&sb->sb_cc,
(sb->sb_flags & SB_NOINTR) ? PSOCK : PSOCK | PCATCH, "sbwait",
sb->sb_timeo));
}
int
sb_lock(sb)
register struct sockbuf *sb;
{
int error;
while (sb->sb_flags & SB_LOCK) {
sb->sb_flags |= SB_WANT;
error = tsleep((caddr_t)&sb->sb_flags,
(sb->sb_flags & SB_NOINTR) ? PSOCK : PSOCK|PCATCH,
"sblock", 0);
if (error)
return (error);
}
sb->sb_flags |= SB_LOCK;
return (0);
}
void
sowakeup(so, sb)
register struct socket *so;
register struct sockbuf *sb;
{
struct proc *p = current_proc();
sb->sb_flags &= ~SB_SEL;
selwakeup(&sb->sb_sel);
if (sb->sb_flags & SB_WAIT) {
sb->sb_flags &= ~SB_WAIT;
wakeup((caddr_t)&sb->sb_cc);
}
if (so->so_state & SS_ASYNC) {
if (so->so_pgid < 0)
gsignal(-so->so_pgid, SIGIO);
else if (so->so_pgid > 0 && (p = pfind(so->so_pgid)) != 0)
psignal(p, SIGIO);
}
if (sb->sb_flags & SB_UPCALL)
(*so->so_upcall)(so, so->so_upcallarg, M_DONTWAIT);
}
int
soreserve(so, sndcc, rcvcc)
register struct socket *so;
u_long sndcc, rcvcc;
{
register struct kextcb *kp;
kp = sotokextcb(so);
while (kp) {
if (kp->e_soif && kp->e_soif->sf_soreserve) {
if ((*kp->e_soif->sf_soreserve)(so, sndcc, rcvcc, kp))
return;
}
kp = kp->e_next;
}
if (sbreserve(&so->so_snd, sndcc) == 0)
goto bad;
if (sbreserve(&so->so_rcv, rcvcc) == 0)
goto bad2;
if (so->so_rcv.sb_lowat == 0)
so->so_rcv.sb_lowat = 1;
if (so->so_snd.sb_lowat == 0)
so->so_snd.sb_lowat = MCLBYTES;
if (so->so_snd.sb_lowat > so->so_snd.sb_hiwat)
so->so_snd.sb_lowat = so->so_snd.sb_hiwat;
return (0);
bad2:
#ifdef __APPLE__
selthreadclear(&so->so_snd.sb_sel);
#endif
sbrelease(&so->so_snd);
bad:
return (ENOBUFS);
}
int
sbreserve(sb, cc)
struct sockbuf *sb;
u_long cc;
{
if ((u_quad_t)cc > (u_quad_t)sb_max * MCLBYTES / (MSIZE + MCLBYTES))
return (0);
sb->sb_hiwat = cc;
sb->sb_mbmax = min(cc * sb_efficiency, sb_max);
if (sb->sb_lowat > sb->sb_hiwat)
sb->sb_lowat = sb->sb_hiwat;
return (1);
}
void
sbrelease(sb)
struct sockbuf *sb;
{
sbflush(sb);
sb->sb_hiwat = 0;
sb->sb_mbmax = 0;
}
void
sbappend(sb, m)
struct sockbuf *sb;
struct mbuf *m;
{
struct kextcb *kp;
register struct mbuf *n;
KERNEL_DEBUG((DBG_FNC_SBAPPEND | DBG_FUNC_START), sb, m->m_len, 0, 0, 0);
if (m == 0)
return;
kp = sotokextcb(sbtoso(sb));
while (kp) {
if (kp->e_sout && kp->e_sout->su_sbappend) {
if ((*kp->e_sout->su_sbappend)(sb, m, kp))
return;
}
kp = kp->e_next;
}
n = sb->sb_mb;
if (n) {
while (n->m_nextpkt)
n = n->m_nextpkt;
do {
if (n->m_flags & M_EOR) {
sbappendrecord(sb, m);
return;
}
} while (n->m_next && (n = n->m_next));
}
sbcompress(sb, m, n);
KERNEL_DEBUG((DBG_FNC_SBAPPEND | DBG_FUNC_END), sb, sb->sb_cc, 0, 0, 0);
}
#ifdef SOCKBUF_DEBUG
void
sbcheck(sb)
register struct sockbuf *sb;
{
register struct mbuf *m;
register struct mbuf *n = 0;
register u_long len = 0, mbcnt = 0;
for (m = sb->sb_mb; m; m = n) {
n = m->m_nextpkt;
for (; m; m = m->m_next) {
len += m->m_len;
mbcnt += MSIZE;
if (m->m_flags & M_EXT)
mbcnt += m->m_ext.ext_size;
}
}
#ifndef __APPLE__
if (len != sb->sb_cc || mbcnt != sb->sb_mbcnt) {
printf("cc %ld != %ld || mbcnt %ld != %ld\n", len, sb->sb_cc,
mbcnt, sb->sb_mbcnt);
panic("sbcheck");
}
#else
if (len != sb->sb_cc)
printf("sbcheck len %ld != sb_cc %ld\n", len, sb->sb_cc);
if (mbcnt != sb->sb_mbcnt)
printf("sbcheck mbcnt %ld != sb_mbcnt %ld\n", mbcnt, sb->sb_mbcnt);
#endif
}
#endif
void
sbappendrecord(sb, m0)
register struct sockbuf *sb;
register struct mbuf *m0;
{
register struct mbuf *m;
register struct kextcb *kp;
if (m0 == 0)
return;
kp = sotokextcb(sbtoso(sb));
while (kp)
{ if (kp->e_sout && kp->e_sout->su_sbappendrecord)
{ if ((*kp->e_sout->su_sbappendrecord)(sb, m0, kp))
return;
}
kp = kp->e_next;
}
m = sb->sb_mb;
if (m)
while (m->m_nextpkt)
m = m->m_nextpkt;
sballoc(sb, m0);
if (m)
m->m_nextpkt = m0;
else
sb->sb_mb = m0;
m = m0->m_next;
m0->m_next = 0;
if (m && (m0->m_flags & M_EOR)) {
m0->m_flags &= ~M_EOR;
m->m_flags |= M_EOR;
}
sbcompress(sb, m, m0);
}
void
sbinsertoob(sb, m0)
register struct sockbuf *sb;
register struct mbuf *m0;
{
register struct mbuf *m;
register struct mbuf **mp;
register struct kextcb *kp;
if (m0 == 0)
return;
kp = sotokextcb(sbtoso(sb));
while (kp)
{ if (kp->e_sout && kp->e_sout->su_sbinsertoob)
{ if ((*kp->e_sout->su_sbinsertoob)(sb, m0, kp))
return;
}
kp = kp->e_next;
}
for (mp = &sb->sb_mb; *mp ; mp = &((*mp)->m_nextpkt)) {
m = *mp;
again:
switch (m->m_type) {
case MT_OOBDATA:
continue;
case MT_CONTROL:
m = m->m_next;
if (m)
goto again;
}
break;
}
sballoc(sb, m0);
m0->m_nextpkt = *mp;
*mp = m0;
m = m0->m_next;
m0->m_next = 0;
if (m && (m0->m_flags & M_EOR)) {
m0->m_flags &= ~M_EOR;
m->m_flags |= M_EOR;
}
sbcompress(sb, m, m0);
}
int
sbappendaddr(sb, asa, m0, control)
register struct sockbuf *sb;
struct sockaddr *asa;
struct mbuf *m0, *control;
{
register struct mbuf *m, *n;
int space = asa->sa_len;
register struct kextcb *kp;
if (m0 && (m0->m_flags & M_PKTHDR) == 0)
panic("sbappendaddr");
kp = sotokextcb(sbtoso(sb));
while (kp)
{ if (kp->e_sout && kp->e_sout->su_sbappendaddr)
{ if ((*kp->e_sout->su_sbappendaddr)(sb, asa, m0, control, kp))
return 0;
}
kp = kp->e_next;
}
if (m0)
space += m0->m_pkthdr.len;
for (n = control; n; n = n->m_next) {
space += n->m_len;
if (n->m_next == 0)
break;
}
if (space > sbspace(sb))
return (0);
if (asa->sa_len > MLEN)
return (0);
MGET(m, M_DONTWAIT, MT_SONAME);
if (m == 0)
return (0);
m->m_len = asa->sa_len;
bcopy((caddr_t)asa, mtod(m, caddr_t), asa->sa_len);
if (n)
n->m_next = m0;
else
control = m0;
m->m_next = control;
for (n = m; n; n = n->m_next)
sballoc(sb, n);
n = sb->sb_mb;
if (n) {
while (n->m_nextpkt)
n = n->m_nextpkt;
n->m_nextpkt = m;
} else
sb->sb_mb = m;
postevent(0,sb,EV_RWBYTES);
return (1);
}
int
sbappendcontrol(sb, m0, control)
struct sockbuf *sb;
struct mbuf *control, *m0;
{
register struct mbuf *m, *n;
int space = 0;
register struct kextcb *kp;
if (control == 0)
panic("sbappendcontrol");
kp = sotokextcb(sbtoso(sb));
while (kp)
{ if (kp->e_sout && kp->e_sout->su_sbappendcontrol)
{ if ((*kp->e_sout->su_sbappendcontrol)(sb, m0, control, kp))
return 0;
}
kp = kp->e_next;
}
for (m = control; ; m = m->m_next) {
space += m->m_len;
if (m->m_next == 0)
break;
}
n = m;
for (m = m0; m; m = m->m_next)
space += m->m_len;
if (space > sbspace(sb))
return (0);
n->m_next = m0;
for (m = control; m; m = m->m_next)
sballoc(sb, m);
n = sb->sb_mb;
if (n) {
while (n->m_nextpkt)
n = n->m_nextpkt;
n->m_nextpkt = control;
} else
sb->sb_mb = control;
postevent(0,sb,EV_RWBYTES);
return (1);
}
void
sbcompress(sb, m, n)
register struct sockbuf *sb;
register struct mbuf *m, *n;
{
register int eor = 0;
register struct mbuf *o;
while (m) {
eor |= m->m_flags & M_EOR;
if (m->m_len == 0 &&
(eor == 0 ||
(((o = m->m_next) || (o = n)) &&
o->m_type == m->m_type))) {
m = m_free(m);
continue;
}
if (n && (n->m_flags & M_EOR) == 0 &&
#ifndef __APPLE__
M_WRITABLE(n) &&
#endif
m->m_len <= MCLBYTES / 4 &&
m->m_len <= M_TRAILINGSPACE(n) &&
n->m_type == m->m_type) {
bcopy(mtod(m, caddr_t), mtod(n, caddr_t) + n->m_len,
(unsigned)m->m_len);
n->m_len += m->m_len;
sb->sb_cc += m->m_len;
m = m_free(m);
continue;
}
if (n)
n->m_next = m;
else
sb->sb_mb = m;
sballoc(sb, m);
n = m;
m->m_flags &= ~M_EOR;
m = m->m_next;
n->m_next = 0;
}
if (eor) {
if (n)
n->m_flags |= eor;
else
printf("semi-panic: sbcompress\n");
}
postevent(0,sb, EV_RWBYTES);
}
void
sbflush(sb)
register struct sockbuf *sb;
{
register struct kextcb *kp;
kp = sotokextcb(sbtoso(sb));
while (kp) {
if (kp->e_sout && kp->e_sout->su_sbflush) {
if ((*kp->e_sout->su_sbflush)(sb, kp))
return;
}
kp = kp->e_next;
}
if (sb->sb_flags & SB_LOCK)
sb_lock(sb);
while (sb->sb_mbcnt) {
if (!sb->sb_cc && (sb->sb_mb == NULL || sb->sb_mb->m_len))
break;
sbdrop(sb, (int)sb->sb_cc);
}
if (sb->sb_cc || sb->sb_mb || sb->sb_mbcnt)
panic("sbflush: cc %ld || mb %p || mbcnt %ld", sb->sb_cc, (void *)sb->sb_mb, sb->sb_mbcnt);
postevent(0, sb, EV_RWBYTES);
}
void
sbdrop(sb, len)
register struct sockbuf *sb;
register int len;
{
register struct mbuf *m, *free_list, *ml;
struct mbuf *next, *last;
register struct kextcb *kp;
KERNEL_DEBUG((DBG_FNC_SBDROP | DBG_FUNC_START), sb, len, 0, 0, 0);
kp = sotokextcb(sbtoso(sb));
while (kp) {
if (kp->e_sout && kp->e_sout->su_sbdrop) {
if ((*kp->e_sout->su_sbdrop)(sb, len, kp))
return;
}
kp = kp->e_next;
}
next = (m = sb->sb_mb) ? m->m_nextpkt : 0;
free_list = last = m;
ml = (struct mbuf *)0;
while (len > 0) {
if (m == 0) {
if (next == 0) {
printf("sbdrop - count not zero\n");
len = 0;
sb->sb_cc = 0;
sb->sb_mbcnt = 0;
break;
}
m = last = next;
next = m->m_nextpkt;
continue;
}
if (m->m_len > len) {
m->m_len -= len;
m->m_data += len;
sb->sb_cc -= len;
break;
}
len -= m->m_len;
sbfree(sb, m);
ml = m;
m = m->m_next;
}
while (m && m->m_len == 0) {
sbfree(sb, m);
ml = m;
m = m->m_next;
}
if (ml) {
ml->m_next = (struct mbuf *)0;
last->m_nextpkt = (struct mbuf *)0;
m_freem_list(free_list);
}
if (m) {
sb->sb_mb = m;
m->m_nextpkt = next;
} else
sb->sb_mb = next;
postevent(0, sb, EV_RWBYTES);
KERNEL_DEBUG((DBG_FNC_SBDROP | DBG_FUNC_END), sb, 0, 0, 0, 0);
}
void
sbdroprecord(sb)
register struct sockbuf *sb;
{
register struct mbuf *m, *mn;
register struct kextcb *kp;
kp = sotokextcb(sbtoso(sb));
while (kp) {
if (kp->e_sout && kp->e_sout->su_sbdroprecord) {
if ((*kp->e_sout->su_sbdroprecord)(sb, kp))
return;
}
kp = kp->e_next;
}
m = sb->sb_mb;
if (m) {
sb->sb_mb = m->m_nextpkt;
do {
sbfree(sb, m);
MFREE(m, mn);
m = mn;
} while (m);
}
postevent(0, sb, EV_RWBYTES);
}
struct mbuf *
sbcreatecontrol(p, size, type, level)
caddr_t p;
register int size;
int type, level;
{
register struct cmsghdr *cp;
struct mbuf *m;
if (CMSG_SPACE((u_int)size) > MLEN)
return ((struct mbuf *) NULL);
if ((m = m_get(M_DONTWAIT, MT_CONTROL)) == NULL)
return ((struct mbuf *) NULL);
cp = mtod(m, struct cmsghdr *);
(void)memcpy(CMSG_DATA(cp), p, size);
m->m_len = CMSG_SPACE(size);
cp->cmsg_len = CMSG_LEN(size);
cp->cmsg_level = level;
cp->cmsg_type = type;
return (m);
}
int
pru_abort_notsupp(struct socket *so)
{
return EOPNOTSUPP;
}
int
pru_accept_notsupp(struct socket *so, struct sockaddr **nam)
{
return EOPNOTSUPP;
}
int
pru_attach_notsupp(struct socket *so, int proto, struct proc *p)
{
return EOPNOTSUPP;
}
int
pru_bind_notsupp(struct socket *so, struct sockaddr *nam, struct proc *p)
{
return EOPNOTSUPP;
}
int
pru_connect_notsupp(struct socket *so, struct sockaddr *nam, struct proc *p)
{
return EOPNOTSUPP;
}
int
pru_connect2_notsupp(struct socket *so1, struct socket *so2)
{
return EOPNOTSUPP;
}
int
pru_control_notsupp(struct socket *so, u_long cmd, caddr_t data,
struct ifnet *ifp, struct proc *p)
{
return EOPNOTSUPP;
}
int
pru_detach_notsupp(struct socket *so)
{
return EOPNOTSUPP;
}
int
pru_disconnect_notsupp(struct socket *so)
{
return EOPNOTSUPP;
}
int
pru_listen_notsupp(struct socket *so, struct proc *p)
{
return EOPNOTSUPP;
}
int
pru_peeraddr_notsupp(struct socket *so, struct sockaddr **nam)
{
return EOPNOTSUPP;
}
int
pru_rcvd_notsupp(struct socket *so, int flags)
{
return EOPNOTSUPP;
}
int
pru_rcvoob_notsupp(struct socket *so, struct mbuf *m, int flags)
{
return EOPNOTSUPP;
}
int
pru_send_notsupp(struct socket *so, int flags, struct mbuf *m,
struct sockaddr *addr, struct mbuf *control,
struct proc *p)
{
return EOPNOTSUPP;
}
int
pru_sense_null(struct socket *so, struct stat *sb)
{
sb->st_blksize = so->so_snd.sb_hiwat;
return 0;
}
int pru_sosend_notsupp(struct socket *so, struct sockaddr *addr,
struct uio *uio, struct mbuf *top,
struct mbuf *control, int flags)
{
return EOPNOTSUPP;
}
int pru_soreceive_notsupp(struct socket *so,
struct sockaddr **paddr,
struct uio *uio, struct mbuf **mp0,
struct mbuf **controlp, int *flagsp)
{
return EOPNOTSUPP;
}
int
pru_shutdown_notsupp(struct socket *so)
{
return EOPNOTSUPP;
}
int
pru_sockaddr_notsupp(struct socket *so, struct sockaddr **nam)
{
return EOPNOTSUPP;
}
int pru_sosend(struct socket *so, struct sockaddr *addr,
struct uio *uio, struct mbuf *top,
struct mbuf *control, int flags)
{
return EOPNOTSUPP;
}
int pru_soreceive(struct socket *so,
struct sockaddr **paddr,
struct uio *uio, struct mbuf **mp0,
struct mbuf **controlp, int *flagsp)
{
return EOPNOTSUPP;
}
int pru_sopoll_notsupp(struct socket *so, int events,
struct ucred *cred)
{
return EOPNOTSUPP;
}
#ifdef __APPLE__
int
sb_notify(struct sockbuf *sb)
{
return ((sb->sb_flags & (SB_WAIT|SB_SEL|SB_ASYNC|SB_UPCALL)) != 0);
}
long
sbspace(struct sockbuf *sb)
{
return ((long) imin((int)(sb->sb_hiwat - sb->sb_cc),
(int)(sb->sb_mbmax - sb->sb_mbcnt)));
}
int
sosendallatonce(struct socket *so)
{
return (so->so_proto->pr_flags & PR_ATOMIC);
}
int
soreadable(struct socket *so)
{
return (so->so_rcv.sb_cc >= so->so_rcv.sb_lowat ||
(so->so_state & SS_CANTRCVMORE) ||
so->so_comp.tqh_first || so->so_error);
}
int
sowriteable(struct socket *so)
{
return ((sbspace(&(so)->so_snd) >= (so)->so_snd.sb_lowat &&
((so->so_state&SS_ISCONNECTED) ||
(so->so_proto->pr_flags&PR_CONNREQUIRED)==0)) ||
(so->so_state & SS_CANTSENDMORE) ||
so->so_error);
}
void
sballoc(struct sockbuf *sb, struct mbuf *m)
{
sb->sb_cc += m->m_len;
sb->sb_mbcnt += MSIZE;
if (m->m_flags & M_EXT)
sb->sb_mbcnt += m->m_ext.ext_size;
}
void
sbfree(struct sockbuf *sb, struct mbuf *m)
{
sb->sb_cc -= m->m_len;
sb->sb_mbcnt -= MSIZE;
if (m->m_flags & M_EXT)
sb->sb_mbcnt -= m->m_ext.ext_size;
}
int
sblock(struct sockbuf *sb, int wf)
{
return(sb->sb_flags & SB_LOCK ?
((wf == M_WAIT) ? sb_lock(sb) : EWOULDBLOCK) :
(sb->sb_flags |= SB_LOCK), 0);
}
void
sbunlock(struct sockbuf *sb)
{
sb->sb_flags &= ~SB_LOCK;
if (sb->sb_flags & SB_WANT) {
sb->sb_flags &= ~SB_WANT;
wakeup((caddr_t)&(sb)->sb_flags);
}
}
void
sorwakeup(struct socket * so)
{
if (sb_notify(&so->so_rcv))
sowakeup(so, &so->so_rcv);
}
void
sowwakeup(struct socket * so)
{
if (sb_notify(&so->so_snd))
sowakeup(so, &so->so_snd);
}
#endif __APPLE__
struct sockaddr *
dup_sockaddr(sa, canwait)
struct sockaddr *sa;
int canwait;
{
struct sockaddr *sa2;
MALLOC(sa2, struct sockaddr *, sa->sa_len, M_SONAME,
canwait ? M_WAITOK : M_NOWAIT);
if (sa2)
bcopy(sa, sa2, sa->sa_len);
return sa2;
}
void
sotoxsocket(struct socket *so, struct xsocket *xso)
{
xso->xso_len = sizeof *xso;
xso->xso_so = so;
xso->so_type = so->so_type;
xso->so_options = so->so_options;
xso->so_linger = so->so_linger;
xso->so_state = so->so_state;
xso->so_pcb = so->so_pcb;
xso->xso_protocol = so->so_proto->pr_protocol;
xso->xso_family = so->so_proto->pr_domain->dom_family;
xso->so_qlen = so->so_qlen;
xso->so_incqlen = so->so_incqlen;
xso->so_qlimit = so->so_qlimit;
xso->so_timeo = so->so_timeo;
xso->so_error = so->so_error;
xso->so_pgid = so->so_pgid;
xso->so_oobmark = so->so_oobmark;
sbtoxsockbuf(&so->so_snd, &xso->so_snd);
sbtoxsockbuf(&so->so_rcv, &xso->so_rcv);
xso->so_uid = so->so_uid;
}
void
sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb)
{
xsb->sb_cc = sb->sb_cc;
xsb->sb_hiwat = sb->sb_hiwat;
xsb->sb_mbcnt = sb->sb_mbcnt;
xsb->sb_mbmax = sb->sb_mbmax;
xsb->sb_lowat = sb->sb_lowat;
xsb->sb_flags = sb->sb_flags;
xsb->sb_timeo = sb->sb_timeo;
}
SYSCTL_NODE(_kern, KERN_IPC, ipc, CTLFLAG_RW, 0, "IPC");
static int dummy;
SYSCTL_INT(_kern, KERN_DUMMY, dummy, CTLFLAG_RW, &dummy, 0, "");
SYSCTL_INT(_kern_ipc, KIPC_MAXSOCKBUF, maxsockbuf, CTLFLAG_RW,
&sb_max, 0, "Maximum socket buffer size");
SYSCTL_INT(_kern_ipc, OID_AUTO, maxsockets, CTLFLAG_RD,
&maxsockets, 0, "Maximum number of sockets avaliable");
SYSCTL_INT(_kern_ipc, KIPC_SOCKBUF_WASTE, sockbuf_waste_factor, CTLFLAG_RW,
&sb_efficiency, 0, "");
SYSCTL_INT(_kern_ipc, KIPC_NMBCLUSTERS, nmbclusters, CTLFLAG_RD, &nmbclusters, 0, "");