/*
- * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <netinet/in_var.h>
#include <netinet/ip_var.h>
#if INET6
+#include <netinet6/in6_pcb.h>
#include <netinet6/ip6_var.h>
#endif
#include <netinet/ip_icmp.h>
#endif
extern int esp_udp_encap_port;
-extern u_long route_generation;
extern void ipfwsyslog( int level, const char *format,...);
SYSCTL_INT(_net_inet_udp, OID_AUTO, pcbcount, CTLFLAG_RD,
&udbinfo.ipi_count, 0, "Number of active PCBs");
+__private_extern__ int udp_use_randomport = 1;
+SYSCTL_INT(_net_inet_udp, OID_AUTO, randomize_ports, CTLFLAG_RW,
+ &udp_use_randomport, 0, "Randomize UDP port numbers");
+
#if INET6
struct udp_in6 {
struct sockaddr_in6 uin6_sin;
if ((pcbinfo->mtx = lck_rw_alloc_init(pcbinfo->mtx_grp, pcbinfo->mtx_attr)) == NULL)
return; /* pretty much dead if this fails... */
-
- in_pcb_nat_init(&udbinfo, AF_INET, IPPROTO_UDP, SOCK_DGRAM);
#else
udbinfo.ipi_zone = zinit("udpcb", sizeof(struct inpcb), maxsockets,
ZONE_INTERRUPT, 0);
#endif
-
-#if 0
- /* for pcb sharing testing only */
- stat = in_pcb_new_share_client(&udbinfo, &fake_owner);
- kprintf("udp_init in_pcb_new_share_client - stat = %d\n", stat);
-
- laddr.s_addr = 0x11646464;
- faddr.s_addr = 0x11646465;
-
- lport = 1500;
- in_pcb_grab_port(&udbinfo, 0, laddr, &lport, faddr, 1600, 0, fake_owner);
- kprintf("udp_init in_pcb_grab_port - stat = %d\n", stat);
-
- stat = in_pcb_rem_share_client(&udbinfo, fake_owner);
- kprintf("udp_init in_pcb_rem_share_client - stat = %d\n", stat);
-
- stat = in_pcb_new_share_client(&udbinfo, &fake_owner);
- kprintf("udp_init in_pcb_new_share_client(2) - stat = %d\n", stat);
-
- laddr.s_addr = 0x11646464;
- faddr.s_addr = 0x11646465;
-
- lport = 1500;
- stat = in_pcb_grab_port(&udbinfo, 0, laddr, &lport, faddr, 1600, 0, fake_owner);
- kprintf("udp_init in_pcb_grab_port(2) - stat = %d\n", stat);
-#endif
}
void
in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) {
int reuse_sock = 0, mcast_delivered = 0;
- struct mbuf *n = NULL;
lck_rw_lock_shared(pcbinfo->mtx);
/*
udp_in6.uin6_init_done = udp_ip6.uip6_init_done = 0;
#endif
LIST_FOREACH(inp, &udb, inp_list) {
-#ifdef __APPLE__
- /* Ignore nat/SharedIP dummy pcbs */
- if (inp->inp_socket == &udbinfo.nat_dummy_socket)
- continue;
-#endif
if (inp->inp_socket == NULL)
continue;
if (inp != sotoinpcb(inp->inp_socket))
if (skipit == 0)
#endif /*IPSEC*/
{
+ struct mbuf *n = NULL;
+
if (reuse_sock)
n = m_copy(m, 0, M_COPYALL);
#if INET6
&udp_in);
#endif /* INET6 */
mcast_delivered++;
+
+ m = n;
}
udp_unlock(inp->inp_socket, 1, 0);
}
* port. It assumes that an application will never
* clear these options after setting them.
*/
- if (reuse_sock == 0 || ((m = n) == NULL))
+ if (reuse_sock == 0 || m == NULL)
break;
+ /*
+ * Recompute IP and UDP header pointers for new mbuf
+ */
+ ip = mtod(m, struct ip *);
+ uh = (struct udphdr *)((caddr_t)ip + iphlen);
}
lck_rw_done(pcbinfo->mtx);
goto bad;
}
- if (reuse_sock != 0) /* free the extra copy of mbuf */
+ if (m != NULL) /* free the extra copy of mbuf or skipped by IPSec */
m_freem(m);
+ KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END, 0,0,0,0,0);
return;
}
SYSCTL_PROC(_net_inet_udp, UDPCTL_PCBLIST, pcblist, CTLFLAG_RD, 0, 0,
udp_pcblist, "S,xinpcb", "List of active UDP sockets");
+#if !CONFIG_EMBEDDED
+
+static int
+udp_pcblist64 SYSCTL_HANDLER_ARGS
+{
+#pragma unused(oidp, arg1, arg2)
+ int error, i, n;
+ struct inpcb *inp, **inp_list;
+ inp_gen_t gencnt;
+ struct xinpgen xig;
+
+ /*
+ * The process of preparing the TCB list is too time-consuming and
+ * resource-intensive to repeat twice on every request.
+ */
+ lck_rw_lock_shared(udbinfo.mtx);
+ if (req->oldptr == USER_ADDR_NULL) {
+ n = udbinfo.ipi_count;
+ req->oldidx = 2 * (sizeof xig)
+ + (n + n/8) * sizeof(struct xinpcb64);
+ lck_rw_done(udbinfo.mtx);
+ return 0;
+ }
+
+ if (req->newptr != USER_ADDR_NULL) {
+ lck_rw_done(udbinfo.mtx);
+ return EPERM;
+ }
+
+ /*
+ * OK, now we're committed to doing something.
+ */
+ gencnt = udbinfo.ipi_gencnt;
+ n = udbinfo.ipi_count;
+
+ bzero(&xig, sizeof(xig));
+ xig.xig_len = sizeof xig;
+ xig.xig_count = n;
+ xig.xig_gen = gencnt;
+ xig.xig_sogen = so_gencnt;
+ error = SYSCTL_OUT(req, &xig, sizeof xig);
+ if (error) {
+ lck_rw_done(udbinfo.mtx);
+ return error;
+ }
+ /*
+ * We are done if there is no pcb
+ */
+ if (n == 0) {
+ lck_rw_done(udbinfo.mtx);
+ return 0;
+ }
+
+ inp_list = _MALLOC(n * sizeof *inp_list, M_TEMP, M_WAITOK);
+ if (inp_list == 0) {
+ lck_rw_done(udbinfo.mtx);
+ return ENOMEM;
+ }
+
+ for (inp = LIST_FIRST(udbinfo.listhead), i = 0; inp && i < n;
+ inp = LIST_NEXT(inp, inp_list)) {
+ if (inp->inp_gencnt <= gencnt && inp->inp_state != INPCB_STATE_DEAD)
+ inp_list[i++] = inp;
+ }
+ n = i;
+
+ error = 0;
+ for (i = 0; i < n; i++) {
+ inp = inp_list[i];
+ if (inp->inp_gencnt <= gencnt && inp->inp_state != INPCB_STATE_DEAD) {
+ struct xinpcb64 xi;
+
+ bzero(&xi, sizeof(xi));
+ xi.xi_len = sizeof xi;
+ inpcb_to_xinpcb64(inp, &xi);
+ if (inp->inp_socket)
+ sotoxsocket64(inp->inp_socket, &xi.xi_socket);
+ error = SYSCTL_OUT(req, &xi, sizeof xi);
+ }
+ }
+ if (!error) {
+ /*
+ * Give the user an updated idea of our state.
+ * If the generation differs from what we told
+ * her before, she knows that something happened
+ * while we were processing this request, and it
+ * might be necessary to retry.
+ */
+ bzero(&xig, sizeof(xig));
+ xig.xig_len = sizeof xig;
+ xig.xig_gen = udbinfo.ipi_gencnt;
+ xig.xig_sogen = so_gencnt;
+ xig.xig_count = udbinfo.ipi_count;
+ error = SYSCTL_OUT(req, &xig, sizeof xig);
+ }
+ FREE(inp_list, M_TEMP);
+ lck_rw_done(udbinfo.mtx);
+ return error;
+}
+
+SYSCTL_PROC(_net_inet_udp, OID_AUTO, pcblist64, CTLFLAG_RD, 0, 0,
+ udp_pcblist64, "S,xinpcb64", "List of active UDP sockets");
+#endif /* !CONFIG_EMBEDDED */
static __inline__ u_int16_t
get_socket_id(struct socket * s)
if (s == NULL) {
return (0);
}
- val = (u_int16_t)(((u_int32_t)s) / sizeof(struct socket));
+ val = (u_int16_t)(((uintptr_t)s) / sizeof(struct socket));
if (val == 0) {
val = 0xffff;
}
struct sockaddr_in *ifaddr;
int error = 0, udp_dodisconnect = 0;
struct socket *so = inp->inp_socket;
- int soopts;
+ int soopts = 0;
struct mbuf *inpopts;
struct ip_moptions *mopts;
struct route ro;
+ struct ip_out_args ipoa;
+#if PKT_PRIORITY
+ mbuf_traffic_class_t mtc = MBUF_TC_NONE;
+#endif /* PKT_PRIORITY */
KERNEL_DEBUG(DBG_FNC_UDP_OUTPUT | DBG_FUNC_START, 0,0,0,0,0);
- if (control)
- m_freem(control); /* XXX */
-
+ if (control != NULL) {
+#if PKT_PRIORITY
+ mtc = mbuf_traffic_class_from_control(control);
+#endif /* PKT_PRIORITY */
+ m_freem(control);
+ }
KERNEL_DEBUG(DBG_LAYER_OUT_BEG, inp->inp_fport, inp->inp_lport,
inp->inp_laddr.s_addr, inp->inp_faddr.s_addr,
(htons((u_short)len + sizeof (struct udphdr))));
goto release;
}
+ lck_mtx_assert(inp->inpcb_mtx, LCK_MTX_ASSERT_OWNED);
+
+ /* If socket was bound to an ifindex, tell ip_output about it */
+ ipoa.ipoa_ifscope = (inp->inp_flags & INP_BOUND_IF) ?
+ inp->inp_boundif : IFSCOPE_NONE;
+ soopts |= IP_OUTARGS;
+
/* If there was a routing change, discard cached route and check
* that we have a valid source address.
* Reacquire a new source address if INADDR_ANY was specified
*/
-
-#if 1
- lck_mtx_assert(inp->inpcb_mtx, LCK_MTX_ASSERT_OWNED);
-#endif
-
- if (inp->inp_route.ro_rt && inp->inp_route.ro_rt->generation_id != route_generation) {
- if (ifa_foraddr(inp->inp_laddr.s_addr) == 0) { /* src address is gone */
- if (inp->inp_flags & INP_INADDR_ANY)
- inp->inp_laddr.s_addr = INADDR_ANY; /* new src will be set later */
- else {
+ if (inp->inp_route.ro_rt != NULL &&
+ inp->inp_route.ro_rt->generation_id != route_generation) {
+ struct in_ifaddr *ia;
+
+ /* src address is gone? */
+ if ((ia = ifa_foraddr(inp->inp_laddr.s_addr)) == NULL) {
+ if (inp->inp_flags & INP_INADDR_ANY) {
+ /* new src will be set later */
+ inp->inp_laddr.s_addr = INADDR_ANY;
+ } else {
error = EADDRNOTAVAIL;
goto release;
}
}
- rtfree(inp->inp_route.ro_rt);
- inp->inp_route.ro_rt = (struct rtentry *)0;
+ if (ia != NULL)
+ ifafree(&ia->ia_ifa);
+ if (inp->inp_route.ro_rt != NULL)
+ rtfree(inp->inp_route.ro_rt);
+ inp->inp_route.ro_rt = NULL;
}
origladdr= laddr = inp->inp_laddr;
#if CONFIG_MACF_NET
mac_mbuf_label_associate_inpcb(inp, m);
#endif
-
-#if CONFIG_IP_EDGEHOLE
- ip_edgehole_mbuf_tag(inp, m);
-#endif
/*
* Calculate data length and get a mbuf
m->m_pkthdr.socket_id = get_socket_id(inp->inp_socket);
inpopts = inp->inp_options;
- soopts = (inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST));
+ soopts |= (inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST));
mopts = inp->inp_moptions;
- /* We don't want to cache the route for non-connected UDP */
- if (udp_dodisconnect) {
- bcopy(&inp->inp_route, &ro, sizeof (ro));
- ro.ro_rt = NULL;
- }
+ /* Copy the cached route and take an extra reference */
+ inp_route_copyout(inp, &ro);
+
+#if PKT_PRIORITY
+ set_traffic_class(m, so, mtc);
+#endif /* PKT_PRIORITY */
socket_unlock(so, 0);
/* XXX jgraessley please look at XXX */
- error = ip_output_list(m, 0, inpopts,
- udp_dodisconnect ? &ro : &inp->inp_route, soopts, mopts, NULL);
+ error = ip_output_list(m, 0, inpopts, &ro, soopts, mopts, &ipoa);
socket_lock(so, 0);
+ /* Synchronize PCB cached route */
+ inp_route_copyin(inp, &ro);
+
if (udp_dodisconnect) {
- /* Discard the cached route, if there is one */
- if (ro.ro_rt != NULL)
- rtfree(ro.ro_rt);
+#if IFNET_ROUTE_REFCNT
+ /* Always discard the cached route for unconnected socket */
+ if (inp->inp_route.ro_rt != NULL) {
+ rtfree(inp->inp_route.ro_rt);
+ inp->inp_route.ro_rt = NULL;
+ }
+#endif /* IFNET_ROUTE_REFCNT */
in_pcbdisconnect(inp);
inp->inp_laddr = origladdr; /* XXX rehash? */
}
+#if IFNET_ROUTE_REFCNT
+ else if (inp->inp_route.ro_rt != NULL &&
+ (inp->inp_route.ro_rt->rt_flags & (RTF_MULTICAST|RTF_BROADCAST))) {
+ /* Always discard non-unicast cached route */
+ rtfree(inp->inp_route.ro_rt);
+ inp->inp_route.ro_rt = NULL;
+ }
+#endif /* IFNET_ROUTE_REFCNT */
+
KERNEL_DEBUG(DBG_FNC_UDP_OUTPUT | DBG_FUNC_END, error, 0,0,0,0);
return (error);
abort:
if (udp_dodisconnect) {
- in_pcbdisconnect(inp);
- inp->inp_laddr = origladdr; /* XXX rehash? */
+#if IFNET_ROUTE_REFCNT
+ /* Always discard the cached route for unconnected socket */
+ if (inp->inp_route.ro_rt != NULL) {
+ rtfree(inp->inp_route.ro_rt);
+ inp->inp_route.ro_rt = NULL;
+ }
+#endif /* IFNET_ROUTE_REFCNT */
+ in_pcbdisconnect(inp);
+ inp->inp_laddr = origladdr; /* XXX rehash? */
}
+#if IFNET_ROUTE_REFCNT
+ else if (inp->inp_route.ro_rt != NULL &&
+ (inp->inp_route.ro_rt->rt_flags & (RTF_MULTICAST|RTF_BROADCAST))) {
+ /* Always discard non-unicast cached route */
+ rtfree(inp->inp_route.ro_rt);
+ inp->inp_route.ro_rt = NULL;
+ }
+#endif /* IFNET_ROUTE_REFCNT */
release:
m_freem(m);
return (error);
}
-u_long udp_sendspace = 9216; /* really max datagram size */
- /* 40 1K datagrams */
-SYSCTL_INT(_net_inet_udp, UDPCTL_MAXDGRAM, maxdgram, CTLFLAG_RW,
- &udp_sendspace, 0, "Maximum outgoing UDP datagram size");
-
-u_long udp_recvspace = 40 * (1024 +
+u_int32_t udp_sendspace = 9216; /* really max datagram size */
+/* 40 1K datagrams */
+u_int32_t udp_recvspace = 40 * (1024 +
#if INET6
sizeof(struct sockaddr_in6)
#else
sizeof(struct sockaddr_in)
#endif
);
-SYSCTL_INT(_net_inet_udp, UDPCTL_RECVSPACE, recvspace, CTLFLAG_RW,
- &udp_recvspace, 0, "Maximum incoming UDP datagram size");
+
+/* Check that the values of udp send and recv space do not exceed sb_max */
+static int
+sysctl_udp_sospace(struct sysctl_oid *oidp, __unused void *arg1,
+ __unused int arg2, struct sysctl_req *req) {
+ u_int32_t new_value = 0, *space_p = NULL;
+ int changed = 0, error = 0;
+ u_quad_t sb_effective_max = (sb_max/ (MSIZE+MCLBYTES)) * MCLBYTES;
+
+ switch (oidp->oid_number) {
+ case UDPCTL_RECVSPACE:
+ space_p = &udp_recvspace;
+ break;
+ case UDPCTL_MAXDGRAM:
+ space_p = &udp_sendspace;
+ break;
+ default:
+ return EINVAL;
+ }
+ error = sysctl_io_number(req, *space_p, sizeof(u_int32_t),
+ &new_value, &changed);
+ if (changed) {
+ if (new_value > 0 && new_value <= sb_effective_max) {
+ *space_p = new_value;
+ } else {
+ error = ERANGE;
+ }
+ }
+ return error;
+}
+
+SYSCTL_PROC(_net_inet_udp, UDPCTL_RECVSPACE, recvspace, CTLTYPE_INT | CTLFLAG_RW,
+ &udp_recvspace, 0, &sysctl_udp_sospace, "IU", "Maximum incoming UDP datagram size");
+
+SYSCTL_PROC(_net_inet_udp, UDPCTL_MAXDGRAM, maxdgram, CTLTYPE_INT | CTLFLAG_RW,
+ &udp_sendspace, 0, &sysctl_udp_sospace, "IU", "Maximum outgoing UDP datagram size");
static int
udp_abort(struct socket *so)
int
-udp_lock(struct socket *so, int refcount, int debug)
+udp_lock(struct socket *so, int refcount, void *debug)
{
- int lr_saved;
- if (debug == 0)
- lr_saved = (unsigned int) __builtin_return_address(0);
- else lr_saved = debug;
+ void *lr_saved;
+
+ if (debug == NULL)
+ lr_saved = __builtin_return_address(0);
+ else
+ lr_saved = debug;
if (so->so_pcb) {
- lck_mtx_assert(((struct inpcb *)so->so_pcb)->inpcb_mtx, LCK_MTX_ASSERT_NOTOWNED);
+ lck_mtx_assert(((struct inpcb *)so->so_pcb)->inpcb_mtx,
+ LCK_MTX_ASSERT_NOTOWNED);
lck_mtx_lock(((struct inpcb *)so->so_pcb)->inpcb_mtx);
+ } else {
+ panic("udp_lock: so=%p NO PCB! lr=%p lrh= %s\n",
+ so, lr_saved, solockhistory_nr(so));
+ /* NOTREACHED */
}
- else
- panic("udp_lock: so=%p NO PCB! lr=%x\n", so, lr_saved);
-
- if (refcount)
+ if (refcount)
so->so_usecount++;
- so->lock_lr[so->next_lock_lr] = (u_int32_t)lr_saved;
+ so->lock_lr[so->next_lock_lr] = lr_saved;
so->next_lock_lr = (so->next_lock_lr+1) % SO_LCKDBG_MAX;
return (0);
}
int
-udp_unlock(struct socket *so, int refcount, int debug)
+udp_unlock(struct socket *so, int refcount, void *debug)
{
- int lr_saved;
+ void *lr_saved;
- if (debug == 0)
- lr_saved = (unsigned int) __builtin_return_address(0);
- else lr_saved = debug;
+ if (debug == NULL)
+ lr_saved = __builtin_return_address(0);
+ else
+ lr_saved = debug;
- if (refcount) {
+ if (refcount)
so->so_usecount--;
-#if 0
- {
- struct inpcb *inp = sotoinpcb(so);
- struct inpcbinfo *pcbinfo = &udbinfo;
-
- if (so->so_usecount == 0 && (inp->inp_wantcnt == WNT_STOPUSING)) {
-
- if (lck_rw_try_lock_exclusive(pcbinfo->mtx)) {
- in_pcbdispose(inp);
- lck_rw_done(pcbinfo->mtx);
- return(0);
- }
- }
- }
-#endif
- }
- if (so->so_pcb == NULL)
- panic("udp_unlock: so=%p NO PCB! lr=%x\n", so, lr_saved);
- else {
- lck_mtx_assert(((struct inpcb *)so->so_pcb)->inpcb_mtx, LCK_MTX_ASSERT_OWNED);
- so->unlock_lr[so->next_unlock_lr] = (u_int32_t)lr_saved;
+
+ if (so->so_pcb == NULL) {
+ panic("udp_unlock: so=%p NO PCB! lr=%p lrh= %s\n",
+ so, lr_saved, solockhistory_nr(so));
+ /* NOTREACHED */
+ } else {
+ lck_mtx_assert(((struct inpcb *)so->so_pcb)->inpcb_mtx,
+ LCK_MTX_ASSERT_OWNED);
+ so->unlock_lr[so->next_unlock_lr] = lr_saved;
so->next_unlock_lr = (so->next_unlock_lr+1) % SO_LCKDBG_MAX;
lck_mtx_unlock(((struct inpcb *)so->so_pcb)->inpcb_mtx);
}
if (so->so_pcb)
return(inp->inpcb_mtx);
else {
- panic("udp_getlock: so=%p NULL so_pcb\n", so);
+ panic("udp_getlock: so=%p NULL so_pcb lrh= %s\n",
+ so, solockhistory_nr(so));
return (so->so_proto->pr_domain->dom_mtx);
}
}
for (inp = udb.lh_first; inp != NULL; inp = inpnxt) {
inpnxt = inp->inp_list.le_next;
-
- /* Ignore nat/SharedIP dummy pcbs */
- if (inp->inp_socket == &udbinfo.nat_dummy_socket)
- continue;
if (inp->inp_wantcnt != WNT_STOPUSING)
continue;
if (!lck_mtx_try_lock(inp->inpcb_mtx)) /* skip if busy, no hurry for cleanup... */
continue;
- if (so->so_usecount == 0)
+ if (so->so_usecount == 0) {
+ if (inp->inp_state != INPCB_STATE_DEAD) {
+#if INET6
+ if (INP_CHECK_SOCKAF(so, AF_INET6))
+ in6_pcbdetach(inp);
+ else
+#endif /* INET6 */
+ in_pcbdetach(inp);
+ }
in_pcbdispose(inp);
- else
+ } else {
lck_mtx_unlock(inp->inpcb_mtx);
+ }
}
lck_rw_done(pcbinfo->mtx);
}
projects / apple / xnu.git / blobdiff