/*
- * Copyright (c) 2000-2013 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* SUCH DAMAGE.
*
* @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95
- * $FreeBSD: src/sys/netinet/udp_usrreq.c,v 1.64.2.13 2001/08/08 18:59:54 ghelmer Exp $
*/
#include <sys/param.h>
#include <net/if_types.h>
#include <net/route.h>
#include <net/dlil.h>
+#include <net/net_api_stats.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
+#include <netinet/in_tclass.h>
#include <netinet/ip.h>
#if INET6
#include <netinet/ip6.h>
#if IPSEC
#include <netinet6/ipsec.h>
#include <netinet6/esp.h>
+#include <netkey/key.h>
extern int ipsec_bypass;
extern int esp_udp_encap_port;
#endif /* IPSEC */
-#define DBG_LAYER_IN_BEG NETDBG_CODE(DBG_NETUDP, 0)
-#define DBG_LAYER_IN_END NETDBG_CODE(DBG_NETUDP, 2)
-#define DBG_LAYER_OUT_BEG NETDBG_CODE(DBG_NETUDP, 1)
-#define DBG_LAYER_OUT_END NETDBG_CODE(DBG_NETUDP, 3)
-#define DBG_FNC_UDP_INPUT NETDBG_CODE(DBG_NETUDP, (5 << 8))
-#define DBG_FNC_UDP_OUTPUT NETDBG_CODE(DBG_NETUDP, (6 << 8) | 1)
+#if NECP
+#include <net/necp.h>
+#endif /* NECP */
+
+#if FLOW_DIVERT
+#include <netinet/flow_divert.h>
+#endif /* FLOW_DIVERT */
+
+#if CONTENT_FILTER
+#include <net/content_filter.h>
+#endif /* CONTENT_FILTER */
+
+#define DBG_LAYER_IN_BEG NETDBG_CODE(DBG_NETUDP, 0)
+#define DBG_LAYER_IN_END NETDBG_CODE(DBG_NETUDP, 2)
+#define DBG_LAYER_OUT_BEG NETDBG_CODE(DBG_NETUDP, 1)
+#define DBG_LAYER_OUT_END NETDBG_CODE(DBG_NETUDP, 3)
+#define DBG_FNC_UDP_INPUT NETDBG_CODE(DBG_NETUDP, (5 << 8))
+#define DBG_FNC_UDP_OUTPUT NETDBG_CODE(DBG_NETUDP, (6 << 8) | 1)
/*
* UDP protocol implementation.
* Per RFC 768, August, 1980.
*/
-#ifndef COMPAT_42
+#ifndef COMPAT_42
static int udpcksum = 1;
#else
-static int udpcksum = 0; /* XXX */
+static int udpcksum = 0; /* XXX */
#endif
SYSCTL_INT(_net_inet_udp, UDPCTL_CHECKSUM, checksum,
CTLFLAG_RW | CTLFLAG_LOCKED, &udpcksum, 0, "");
SYSCTL_INT(_net_inet_udp, OID_AUTO, blackhole, CTLFLAG_RW | CTLFLAG_LOCKED,
&blackhole, 0, "Do not send port unreachables for refused connects");
-struct inpcbhead udb; /* from udp_var.h */
-#define udb6 udb /* for KAME src sync over BSD*'s */
+struct inpcbhead udb; /* from udp_var.h */
+#define udb6 udb /* for KAME src sync over BSD*'s */
struct inpcbinfo udbinfo;
#ifndef UDBHASHSIZE
#if IPFIREWALL
extern int fw_verbose;
-extern void ipfwsyslog( int level, const char *format,...);
+extern void ipfwsyslog(int level, const char *format, ...);
extern void ipfw_stealth_stats_incr_udp(void);
/* Apple logging, log to ipfw.log */
-#define log_in_vain_log(a) { \
- if ((udp_log_in_vain == 3) && (fw_verbose == 2)) { \
- ipfwsyslog a; \
+#define log_in_vain_log(a) { \
+ if ((udp_log_in_vain == 3) && (fw_verbose == 2)) { \
+ ipfwsyslog a; \
} else if ((udp_log_in_vain == 4) && (fw_verbose == 2)) { \
- ipfw_stealth_stats_incr_udp(); \
- } else { \
- log a; \
- } \
+ ipfw_stealth_stats_incr_udp(); \
+ } else { \
+ log a; \
+ } \
}
#else /* !IPFIREWALL */
-#define log_in_vain_log( a ) { log a; }
+#define log_in_vain_log(a) { log a; }
#endif /* !IPFIREWALL */
static int udp_getstat SYSCTL_HANDLER_ARGS;
-struct udpstat udpstat; /* from udp_var.h */
-SYSCTL_PROC(_net_inet_udp, UDPCTL_STATS, stats, CTLFLAG_RD | CTLFLAG_LOCKED,
+struct udpstat udpstat; /* from udp_var.h */
+SYSCTL_PROC(_net_inet_udp, UDPCTL_STATS, stats,
+ CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED,
0, 0, udp_getstat, "S,udpstat",
"UDP statistics (struct udpstat, netinet/udp_var.h)");
#if INET6
struct udp_in6 {
- struct sockaddr_in6 uin6_sin;
- u_char uin6_init_done : 1;
+ struct sockaddr_in6 uin6_sin;
+ u_char uin6_init_done : 1;
};
struct udp_ip6 {
- struct ip6_hdr uip6_ip6;
- u_char uip6_init_done : 1;
+ struct ip6_hdr uip6_ip6;
+ u_char uip6_init_done : 1;
};
-static int udp_abort(struct socket *);
-static int udp_attach(struct socket *, int, struct proc *);
-static int udp_bind(struct socket *, struct sockaddr *, struct proc *);
-static int udp_connect(struct socket *, struct sockaddr *, struct proc *);
-static int udp_connectx(struct socket *, struct sockaddr_list **,
- struct sockaddr_list **, struct proc *, uint32_t, associd_t, connid_t *,
- uint32_t, void *, uint32_t);
-static int udp_detach(struct socket *);
-static int udp_disconnect(struct socket *);
-static int udp_disconnectx(struct socket *, associd_t, connid_t);
-static int udp_send(struct socket *, int, struct mbuf *, struct sockaddr *,
+int udp_abort(struct socket *);
+int udp_attach(struct socket *, int, struct proc *);
+int udp_bind(struct socket *, struct sockaddr *, struct proc *);
+int udp_connect(struct socket *, struct sockaddr *, struct proc *);
+int udp_connectx(struct socket *, struct sockaddr *,
+ struct sockaddr *, struct proc *, uint32_t, sae_associd_t,
+ sae_connid_t *, uint32_t, void *, uint32_t, struct uio *, user_ssize_t *);
+int udp_detach(struct socket *);
+int udp_disconnect(struct socket *);
+int udp_disconnectx(struct socket *, sae_associd_t, sae_connid_t);
+int udp_send(struct socket *, int, struct mbuf *, struct sockaddr *,
struct mbuf *, struct proc *);
static void udp_append(struct inpcb *, struct ip *, struct mbuf *, int,
struct sockaddr_in *, struct udp_in6 *, struct udp_ip6 *, struct ifnet *);
struct sockaddr_in *, struct ifnet *);
#endif /* !INET6 */
static int udp_input_checksum(struct mbuf *, struct udphdr *, int, int);
-static int udp_output(struct inpcb *, struct mbuf *, struct sockaddr *,
+int udp_output(struct inpcb *, struct mbuf *, struct sockaddr *,
struct mbuf *, struct proc *);
static void ip_2_ip6_hdr(struct ip6_hdr *ip6, struct ip *ip);
static void udp_gc(struct inpcbinfo *);
struct pr_usrreqs udp_usrreqs = {
- .pru_abort = udp_abort,
- .pru_attach = udp_attach,
- .pru_bind = udp_bind,
- .pru_connect = udp_connect,
- .pru_connectx = udp_connectx,
- .pru_control = in_control,
- .pru_detach = udp_detach,
- .pru_disconnect = udp_disconnect,
- .pru_disconnectx = udp_disconnectx,
- .pru_peeraddr = in_getpeeraddr,
- .pru_send = udp_send,
- .pru_shutdown = udp_shutdown,
- .pru_sockaddr = in_getsockaddr,
- .pru_sosend = sosend,
- .pru_soreceive = soreceive,
+ .pru_abort = udp_abort,
+ .pru_attach = udp_attach,
+ .pru_bind = udp_bind,
+ .pru_connect = udp_connect,
+ .pru_connectx = udp_connectx,
+ .pru_control = in_control,
+ .pru_detach = udp_detach,
+ .pru_disconnect = udp_disconnect,
+ .pru_disconnectx = udp_disconnectx,
+ .pru_peeraddr = in_getpeeraddr,
+ .pru_send = udp_send,
+ .pru_shutdown = udp_shutdown,
+ .pru_sockaddr = in_getsockaddr,
+ .pru_sosend = sosend,
+ .pru_soreceive = soreceive,
+ .pru_soreceive_list = soreceive_list,
};
void
{
#pragma unused(dp)
static int udp_initialized = 0;
- vm_size_t str_size;
- struct inpcbinfo *pcbinfo;
+ vm_size_t str_size;
+ struct inpcbinfo *pcbinfo;
- VERIFY((pp->pr_flags & (PR_INITIALIZED|PR_ATTACHED)) == PR_ATTACHED);
+ VERIFY((pp->pr_flags & (PR_INITIALIZED | PR_ATTACHED)) == PR_ATTACHED);
- if (udp_initialized)
+ if (udp_initialized) {
return;
+ }
udp_initialized = 1;
-
+ uint32_t pool_size = (nmbclusters << MCLSHIFT) >> MBSHIFT;
+ if (pool_size >= 96) {
+ /* Improves 10GbE UDP performance. */
+ udp_recvspace = 786896;
+ }
LIST_INIT(&udb);
udbinfo.ipi_listhead = &udb;
udbinfo.ipi_hashbase = hashinit(UDBHASHSIZE, M_PCB,
&udbinfo.ipi_hashmask);
udbinfo.ipi_porthashbase = hashinit(UDBHASHSIZE, M_PCB,
&udbinfo.ipi_porthashmask);
- str_size = (vm_size_t) sizeof (struct inpcb);
- udbinfo.ipi_zone = zinit(str_size, 80000*str_size, 8192, "udpcb");
+ str_size = (vm_size_t) sizeof(struct inpcb);
+ udbinfo.ipi_zone = zinit(str_size, 80000 * str_size, 8192, "udpcb");
pcbinfo = &udbinfo;
/*
struct ifnet *ifp = m->m_pkthdr.rcvif;
boolean_t cell = IFNET_IS_CELLULAR(ifp);
boolean_t wifi = (!cell && IFNET_IS_WIFI(ifp));
+ boolean_t wired = (!wifi && IFNET_IS_WIRED(ifp));
- bzero(&udp_in, sizeof (udp_in));
- udp_in.sin_len = sizeof (struct sockaddr_in);
+ bzero(&udp_in, sizeof(udp_in));
+ udp_in.sin_len = sizeof(struct sockaddr_in);
udp_in.sin_family = AF_INET;
#if INET6
- bzero(&udp_in6, sizeof (udp_in6));
- udp_in6.uin6_sin.sin6_len = sizeof (struct sockaddr_in6);
+ bzero(&udp_in6, sizeof(udp_in6));
+ udp_in6.uin6_sin.sin6_len = sizeof(struct sockaddr_in6);
udp_in6.uin6_sin.sin6_family = AF_INET6;
#endif /* INET6 */
udpstat.udps_ipackets++;
- KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_START, 0,0,0,0,0);
+ KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_START, 0, 0, 0, 0, 0);
/* Expect 32-bit aligned data pointer on strict-align platforms */
MBUF_STRICT_DATA_ALIGNMENT_CHECK_32(m);
* but we don't yet have a way to check the checksum
* with options still present.
*/
- if (iphlen > sizeof (struct ip)) {
- ip_stripoptions(m, (struct mbuf *)0);
- iphlen = sizeof (struct ip);
+ if (iphlen > sizeof(struct ip)) {
+ ip_stripoptions(m);
+ iphlen = sizeof(struct ip);
}
/*
* Get IP and UDP header together in first mbuf.
*/
ip = mtod(m, struct ip *);
- if (m->m_len < iphlen + sizeof (struct udphdr)) {
- m = m_pullup(m, iphlen + sizeof (struct udphdr));
+ if (m->m_len < iphlen + sizeof(struct udphdr)) {
+ m = m_pullup(m, iphlen + sizeof(struct udphdr));
if (m == NULL) {
udpstat.udps_hdrops++;
KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END,
- 0,0,0,0,0);
+ 0, 0, 0, 0, 0);
return;
}
ip = mtod(m, struct ip *);
*/
len = ntohs((u_short)uh->uh_ulen);
if (ip->ip_len != len) {
- if (len > ip->ip_len || len < sizeof (struct udphdr)) {
+ if (len > ip->ip_len || len < sizeof(struct udphdr)) {
udpstat.udps_badlen++;
IF_UDP_STATINC(ifp, badlength);
goto bad;
/*
* Checksum extended UDP header and data.
*/
- if (udp_input_checksum(m, uh, iphlen, len))
+ if (udp_input_checksum(m, uh, iphlen, len)) {
goto bad;
+ }
isbroadcast = in_broadcast(ip->ip_dst, ifp);
int skipit;
#endif /* IPSEC */
- if (inp->inp_socket == NULL)
+ if (inp->inp_socket == NULL) {
continue;
+ }
if (inp != sotoinpcb(inp->inp_socket)) {
panic("%s: bad so back ptr inp=%p\n",
__func__, inp);
/* NOTREACHED */
}
#if INET6
- if ((inp->inp_vflag & INP_IPV4) == 0)
- continue;
-#endif /* INET6 */
- if (inp_restricted(inp, ifp))
+ if ((inp->inp_vflag & INP_IPV4) == 0) {
continue;
-
- if (IFNET_IS_CELLULAR(ifp) &&
- (inp->inp_flags & INP_NO_IFT_CELLULAR))
+ }
+#endif /* INET6 */
+ if (inp_restricted_recv(inp, ifp)) {
continue;
+ }
if ((inp->inp_moptions == NULL) &&
(ntohl(ip->ip_dst.s_addr) !=
- INADDR_ALLHOSTS_GROUP) && (isbroadcast == 0))
+ INADDR_ALLHOSTS_GROUP) && (isbroadcast == 0)) {
continue;
+ }
if (in_pcb_checkstate(inp, WNT_ACQUIRE, 0) ==
- WNT_STOPUSING)
+ WNT_STOPUSING) {
continue;
+ }
udp_lock(inp->inp_socket, 1, 0);
}
IMO_LOCK(imo);
- bzero(&group, sizeof (struct sockaddr_in));
- group.sin_len = sizeof (struct sockaddr_in);
+ bzero(&group, sizeof(struct sockaddr_in));
+ group.sin_len = sizeof(struct sockaddr_in);
group.sin_family = AF_INET;
group.sin_addr = ip->ip_dst;
blocked = imo_multi_filter(imo, ifp,
- (struct sockaddr *)&group,
- (struct sockaddr *)&udp_in);
- if (blocked == MCAST_PASS)
+ &group, &udp_in);
+ if (blocked == MCAST_PASS) {
foundmembership = 1;
+ }
IMO_UNLOCK(imo);
if (!foundmembership) {
udp_unlock(inp->inp_socket, 1, 0);
if (blocked == MCAST_NOTSMEMBER ||
- blocked == MCAST_MUTED)
+ blocked == MCAST_MUTED) {
udpstat.udps_filtermcast++;
+ }
continue;
}
foundmembership = 0;
}
reuse_sock = (inp->inp_socket->so_options &
- (SO_REUSEPORT|SO_REUSEADDR));
+ (SO_REUSEPORT | SO_REUSEADDR));
-#if IPSEC
+#if NECP
skipit = 0;
- /* check AH/ESP integrity. */
- if (ipsec_bypass == 0 &&
- ipsec4_in_reject_so(m, inp->inp_socket)) {
- IPSEC_STAT_INCREMENT(ipsecstat.in_polvio);
+ if (!necp_socket_is_allowed_to_send_recv_v4(inp,
+ uh->uh_dport, uh->uh_sport, &ip->ip_dst,
+ &ip->ip_src, ifp, NULL, NULL, NULL)) {
/* do not inject data to pcb */
skipit = 1;
}
if (skipit == 0)
-#endif /*IPSEC*/
+#endif /* NECP */
{
struct mbuf *n = NULL;
- if (reuse_sock)
+ if (reuse_sock) {
n = m_copy(m, 0, M_COPYALL);
+ }
#if INET6
udp_append(inp, ip, m,
- iphlen + sizeof (struct udphdr),
+ iphlen + sizeof(struct udphdr),
&udp_in, &udp_in6, &udp_ip6, ifp);
#else /* !INET6 */
udp_append(inp, ip, m,
- iphlen + sizeof (struct udphdr),
+ iphlen + sizeof(struct udphdr),
&udp_in, ifp);
#endif /* !INET6 */
mcast_delivered++;
* port. It assumes that an application will never
* clear these options after setting them.
*/
- if (reuse_sock == 0 || m == NULL)
+ if (reuse_sock == 0 || m == NULL) {
break;
+ }
/*
* Expect 32-bit aligned data pointer on strict-align
goto bad;
}
- /* free the extra copy of mbuf or skipped by IPSec */
- if (m != NULL)
+ /* free the extra copy of mbuf or skipped by IPsec */
+ if (m != NULL) {
m_freem(m);
- KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END, 0,0,0,0,0);
+ }
+ KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END, 0, 0, 0, 0, 0);
return;
}
#if IPSEC
/*
* UDP to port 4500 with a payload where the first four bytes are
- * not zero is a UDP encapsulated IPSec packet. Packets where
+ * not zero is a UDP encapsulated IPsec packet. Packets where
* the payload is one byte and that byte is 0xFF are NAT keepalive
- * packets. Decapsulate the ESP packet and carry on with IPSec input
+ * packets. Decapsulate the ESP packet and carry on with IPsec input
* or discard the NAT keep-alive.
*/
if (ipsec_bypass == 0 && (esp_udp_encap_port & 0xFFFF) != 0 &&
- uh->uh_dport == ntohs((u_short)esp_udp_encap_port)) {
- int payload_len = len - sizeof (struct udphdr) > 4 ? 4 :
- len - sizeof (struct udphdr);
-
- if (m->m_len < iphlen + sizeof (struct udphdr) + payload_len) {
- if ((m = m_pullup(m, iphlen + sizeof (struct udphdr) +
- payload_len)) == NULL) {
- udpstat.udps_hdrops++;
+ (uh->uh_dport == ntohs((u_short)esp_udp_encap_port) ||
+ uh->uh_sport == ntohs((u_short)esp_udp_encap_port))) {
+ /*
+ * Check if ESP or keepalive:
+ * 1. If the destination port of the incoming packet is 4500.
+ * 2. If the source port of the incoming packet is 4500,
+ * then check the SADB to match IP address and port.
+ */
+ bool check_esp = true;
+ if (uh->uh_dport != ntohs((u_short)esp_udp_encap_port)) {
+ check_esp = key_checksa_present(AF_INET, (caddr_t)&ip->ip_dst,
+ (caddr_t)&ip->ip_src, uh->uh_dport,
+ uh->uh_sport);
+ }
+
+ if (check_esp) {
+ int payload_len = len - sizeof(struct udphdr) > 4 ? 4 :
+ len - sizeof(struct udphdr);
+
+ if (m->m_len < iphlen + sizeof(struct udphdr) + payload_len) {
+ if ((m = m_pullup(m, iphlen + sizeof(struct udphdr) +
+ payload_len)) == NULL) {
+ udpstat.udps_hdrops++;
+ KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END,
+ 0, 0, 0, 0, 0);
+ return;
+ }
+ /*
+ * Expect 32-bit aligned data pointer on strict-align
+ * platforms.
+ */
+ MBUF_STRICT_DATA_ALIGNMENT_CHECK_32(m);
+
+ ip = mtod(m, struct ip *);
+ uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);
+ }
+ /* Check for NAT keepalive packet */
+ if (payload_len == 1 && *(u_int8_t *)
+ ((caddr_t)uh + sizeof(struct udphdr)) == 0xFF) {
+ m_freem(m);
KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END,
- 0,0,0,0,0);
+ 0, 0, 0, 0, 0);
+ return;
+ } else if (payload_len == 4 && *(u_int32_t *)(void *)
+ ((caddr_t)uh + sizeof(struct udphdr)) != 0) {
+ /* UDP encapsulated IPsec packet to pass through NAT */
+ KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END,
+ 0, 0, 0, 0, 0);
+ /* preserve the udp header */
+ esp4_input(m, iphlen + sizeof(struct udphdr));
return;
}
- /*
- * Expect 32-bit aligned data pointer on strict-align
- * platforms.
- */
- MBUF_STRICT_DATA_ALIGNMENT_CHECK_32(m);
-
- ip = mtod(m, struct ip *);
- uh = (struct udphdr *)(void *)((caddr_t)ip + iphlen);
- }
- /* Check for NAT keepalive packet */
- if (payload_len == 1 && *(u_int8_t*)
- ((caddr_t)uh + sizeof (struct udphdr)) == 0xFF) {
- m_freem(m);
- KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END,
- 0,0,0,0,0);
- return;
- } else if (payload_len == 4 && *(u_int32_t*)(void *)
- ((caddr_t)uh + sizeof (struct udphdr)) != 0) {
- /* UDP encapsulated IPSec packet to pass through NAT */
- KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END,
- 0,0,0,0,0);
- /* preserve the udp header */
- esp4_input(m, iphlen + sizeof (struct udphdr));
- return;
}
}
#endif /* IPSEC */
if (udp_log_in_vain < 3) {
log(LOG_INFO, "Connection attempt to "
"UDP %s:%d from %s:%d\n", inet_ntop(AF_INET,
- &ip->ip_dst, buf, sizeof (buf)),
- ntohs(uh->uh_dport), inet_ntop(AF_INET,
- &ip->ip_src, buf2, sizeof (buf2)),
- ntohs(uh->uh_sport));
+ &ip->ip_dst, buf, sizeof(buf)),
+ ntohs(uh->uh_dport), inet_ntop(AF_INET,
+ &ip->ip_src, buf2, sizeof(buf2)),
+ ntohs(uh->uh_sport));
} else if (!(m->m_flags & (M_BCAST | M_MCAST)) &&
ip->ip_dst.s_addr != ip->ip_src.s_addr) {
log_in_vain_log((LOG_INFO,
"Stealth Mode connection attempt to "
"UDP %s:%d from %s:%d\n", inet_ntop(AF_INET,
- &ip->ip_dst, buf, sizeof (buf)),
+ &ip->ip_dst, buf, sizeof(buf)),
ntohs(uh->uh_dport), inet_ntop(AF_INET,
- &ip->ip_src, buf2, sizeof (buf2)),
+ &ip->ip_src, buf2, sizeof(buf2)),
ntohs(uh->uh_sport)))
}
}
goto bad;
}
#if ICMP_BANDLIM
- if (badport_bandlim(BANDLIM_ICMP_UNREACH) < 0)
+ if (badport_bandlim(BANDLIM_ICMP_UNREACH) < 0) {
goto bad;
+ }
#endif /* ICMP_BANDLIM */
- if (blackhole)
- if (ifp && ifp->if_type != IFT_LOOP)
+ if (blackhole) {
+ if (ifp && ifp->if_type != IFT_LOOP) {
goto bad;
+ }
+ }
*ip = save_ip;
ip->ip_len += iphlen;
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
- KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END, 0,0,0,0,0);
+ KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END, 0, 0, 0, 0, 0);
return;
}
udp_lock(inp->inp_socket, 1, 0);
IF_UDP_STATINC(ifp, cleanup);
goto bad;
}
-#if IPSEC
- if (ipsec_bypass == 0 && inp != NULL) {
- if (ipsec4_in_reject_so(m, inp->inp_socket)) {
- IPSEC_STAT_INCREMENT(ipsecstat.in_polvio);
- udp_unlock(inp->inp_socket, 1, 0);
- IF_UDP_STATINC(ifp, badipsec);
- goto bad;
- }
+#if NECP
+ if (!necp_socket_is_allowed_to_send_recv_v4(inp, uh->uh_dport,
+ uh->uh_sport, &ip->ip_dst, &ip->ip_src, ifp, NULL, NULL, NULL)) {
+ udp_unlock(inp->inp_socket, 1, 0);
+ IF_UDP_STATINC(ifp, badipsec);
+ goto bad;
}
-#endif /* IPSEC */
+#endif /* NECP */
/*
* Construct sockaddr format source address.
udp_in.sin_addr = ip->ip_src;
if ((inp->inp_flags & INP_CONTROLOPTS) != 0 ||
(inp->inp_socket->so_options & SO_TIMESTAMP) != 0 ||
- (inp->inp_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0) {
+ (inp->inp_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0 ||
+ (inp->inp_socket->so_options & SO_TIMESTAMP_CONTINUOUS) != 0) {
#if INET6
if (inp->inp_vflag & INP_IPV6) {
int savedflags;
goto bad;
}
}
- m_adj(m, iphlen + sizeof (struct udphdr));
+ m_adj(m, iphlen + sizeof(struct udphdr));
KERNEL_DEBUG(DBG_LAYER_IN_END, uh->uh_dport, uh->uh_sport,
save_ip.ip_src.s_addr, save_ip.ip_dst.s_addr, uh->uh_ulen);
append_sa = (struct sockaddr *)&udp_in;
}
if (nstat_collect) {
- INP_ADD_STAT(inp, cell, wifi, rxpackets, 1);
- INP_ADD_STAT(inp, cell, wifi, rxbytes, m->m_pkthdr.len);
+ INP_ADD_STAT(inp, cell, wifi, wired, rxpackets, 1);
+ INP_ADD_STAT(inp, cell, wifi, wired, rxbytes, m->m_pkthdr.len);
+ inp_set_activity_bitmap(inp);
}
so_recv_data_stat(inp->inp_socket, m, 0);
if (sbappendaddr(&inp->inp_socket->so_rcv, append_sa,
sorwakeup(inp->inp_socket);
}
udp_unlock(inp->inp_socket, 1, 0);
- KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END, 0,0,0,0,0);
+ KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END, 0, 0, 0, 0, 0);
return;
bad:
m_freem(m);
- if (opts)
+ if (opts) {
m_freem(opts);
- KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END, 0,0,0,0,0);
+ }
+ KERNEL_DEBUG(DBG_FNC_UDP_INPUT | DBG_FUNC_END, 0, 0, 0, 0, 0);
}
#if INET6
static void
ip_2_ip6_hdr(struct ip6_hdr *ip6, struct ip *ip)
{
- bzero(ip6, sizeof (*ip6));
+ bzero(ip6, sizeof(*ip6));
ip6->ip6_vfc = IPV6_VERSION;
ip6->ip6_plen = ip->ip_len;
struct mbuf *opts = 0;
boolean_t cell = IFNET_IS_CELLULAR(ifp);
boolean_t wifi = (!cell && IFNET_IS_WIFI(ifp));
+ boolean_t wired = (!wifi && IFNET_IS_WIRED(ifp));
int ret = 0;
#if CONFIG_MACF_NET
#endif /* CONFIG_MACF_NET */
if ((last->inp_flags & INP_CONTROLOPTS) != 0 ||
(last->inp_socket->so_options & SO_TIMESTAMP) != 0 ||
- (last->inp_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0) {
+ (last->inp_socket->so_options & SO_TIMESTAMP_MONOTONIC) != 0 ||
+ (last->inp_socket->so_options & SO_TIMESTAMP_CONTINUOUS) != 0) {
#if INET6
if (last->inp_vflag & INP_IPV6) {
int savedflags;
#endif /* INET6 */
append_sa = (struct sockaddr *)pudp_in;
if (nstat_collect) {
- INP_ADD_STAT(last, cell, wifi, rxpackets, 1);
- INP_ADD_STAT(last, cell, wifi, rxbytes, n->m_pkthdr.len);
+ INP_ADD_STAT(last, cell, wifi, wired, rxpackets, 1);
+ INP_ADD_STAT(last, cell, wifi, wired, rxbytes,
+ n->m_pkthdr.len);
+ inp_set_activity_bitmap(last);
}
so_recv_data_stat(last->inp_socket, n, 0);
m_adj(n, off);
error:
m_freem(n);
m_freem(opts);
- return;
}
/*
}
void
-udp_ctlinput(int cmd, struct sockaddr *sa, void *vip)
+udp_ctlinput(int cmd, struct sockaddr *sa, void *vip, __unused struct ifnet * ifp)
{
struct ip *ip = vip;
void (*notify)(struct inpcb *, int) = udp_notify;
- struct in_addr faddr;
- struct inpcb *inp;
+ struct in_addr faddr;
+ struct inpcb *inp = NULL;
faddr = ((struct sockaddr_in *)(void *)sa)->sin_addr;
- if (sa->sa_family != AF_INET || faddr.s_addr == INADDR_ANY)
+ if (sa->sa_family != AF_INET || faddr.s_addr == INADDR_ANY) {
return;
+ }
if (PRC_IS_REDIRECT(cmd)) {
ip = 0;
if (ip) {
struct udphdr uh;
- bcopy(((caddr_t)ip + (ip->ip_hl << 2)), &uh, sizeof (uh));
+ bcopy(((caddr_t)ip + (ip->ip_hl << 2)), &uh, sizeof(uh));
inp = in_pcblookup_hash(&udbinfo, faddr, uh.uh_dport,
- ip->ip_src, uh.uh_sport, 0, NULL);
+ ip->ip_src, uh.uh_sport, 0, NULL);
if (inp != NULL && inp->inp_socket != NULL) {
udp_lock(inp->inp_socket, 1, 0);
if (in_pcb_checkstate(inp, WNT_RELEASE, 1) ==
- WNT_STOPUSING) {
+ WNT_STOPUSING) {
udp_unlock(inp->inp_socket, 1, 0);
return;
}
int
udp_ctloutput(struct socket *so, struct sockopt *sopt)
{
- int error, optval;
- struct inpcb *inp;
+ int error = 0, optval = 0;
+ struct inpcb *inp;
/* Allow <SOL_SOCKET,SO_FLUSH> at this level */
if (sopt->sopt_level != IPPROTO_UDP &&
- !(sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_FLUSH))
- return (ip_ctloutput(so, sopt));
+ !(sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_FLUSH)) {
+ return ip_ctloutput(so, sopt);
+ }
- error = 0;
inp = sotoinpcb(so);
switch (sopt->sopt_dir) {
break;
}
- if ((error = sooptcopyin(sopt, &optval, sizeof (optval),
- sizeof (optval))) != 0)
+ if ((error = sooptcopyin(sopt, &optval, sizeof(optval),
+ sizeof(optval))) != 0) {
break;
+ }
- if (optval != 0)
+ if (optval != 0) {
inp->inp_flags |= INP_UDP_NOCKSUM;
- else
+ } else {
inp->inp_flags &= ~INP_UDP_NOCKSUM;
+ }
break;
+ case UDP_KEEPALIVE_OFFLOAD:
+ {
+ struct udp_keepalive_offload ka;
+ /*
+ * If the socket is not connected, the stack will
+ * not know the destination address to put in the
+ * keepalive datagram. Return an error now instead
+ * of failing later.
+ */
+ if (!(so->so_state & SS_ISCONNECTED)) {
+ error = EINVAL;
+ break;
+ }
+ if (sopt->sopt_valsize != sizeof(ka)) {
+ error = EINVAL;
+ break;
+ }
+ if ((error = sooptcopyin(sopt, &ka, sizeof(ka),
+ sizeof(ka))) != 0) {
+ break;
+ }
+ /* application should specify the type */
+ if (ka.ka_type == 0) {
+ return EINVAL;
+ }
+
+ if (ka.ka_interval == 0) {
+ /*
+ * if interval is 0, disable the offload
+ * mechanism
+ */
+ if (inp->inp_keepalive_data != NULL) {
+ FREE(inp->inp_keepalive_data,
+ M_TEMP);
+ }
+ inp->inp_keepalive_data = NULL;
+ inp->inp_keepalive_datalen = 0;
+ inp->inp_keepalive_interval = 0;
+ inp->inp_keepalive_type = 0;
+ inp->inp_flags2 &= ~INP2_KEEPALIVE_OFFLOAD;
+ } else {
+ if (inp->inp_keepalive_data != NULL) {
+ FREE(inp->inp_keepalive_data,
+ M_TEMP);
+ inp->inp_keepalive_data = NULL;
+ }
+
+ inp->inp_keepalive_datalen = min(
+ ka.ka_data_len,
+ UDP_KEEPALIVE_OFFLOAD_DATA_SIZE);
+ if (inp->inp_keepalive_datalen > 0) {
+ MALLOC(inp->inp_keepalive_data,
+ u_int8_t *,
+ inp->inp_keepalive_datalen,
+ M_TEMP, M_WAITOK);
+ if (inp->inp_keepalive_data == NULL) {
+ inp->inp_keepalive_datalen = 0;
+ error = ENOMEM;
+ break;
+ }
+ bcopy(ka.ka_data,
+ inp->inp_keepalive_data,
+ inp->inp_keepalive_datalen);
+ } else {
+ inp->inp_keepalive_datalen = 0;
+ }
+ inp->inp_keepalive_interval =
+ min(UDP_KEEPALIVE_INTERVAL_MAX_SECONDS,
+ ka.ka_interval);
+ inp->inp_keepalive_type = ka.ka_type;
+ inp->inp_flags2 |= INP2_KEEPALIVE_OFFLOAD;
+ }
+ break;
+ }
case SO_FLUSH:
- if ((error = sooptcopyin(sopt, &optval, sizeof (optval),
- sizeof (optval))) != 0)
+ if ((error = sooptcopyin(sopt, &optval, sizeof(optval),
+ sizeof(optval))) != 0) {
break;
+ }
error = inp_flush(inp, optval);
break;
error = ENOPROTOOPT;
break;
}
- if (error == 0)
- error = sooptcopyout(sopt, &optval, sizeof (optval));
+ if (error == 0) {
+ error = sooptcopyout(sopt, &optval, sizeof(optval));
+ }
break;
}
- return (error);
+ return error;
}
static int
lck_rw_lock_exclusive(udbinfo.ipi_lock);
if (req->oldptr == USER_ADDR_NULL) {
n = udbinfo.ipi_count;
- req->oldidx = 2 * (sizeof (xig))
- + (n + n/8) * sizeof (struct xinpcb);
+ req->oldidx = 2 * (sizeof(xig))
+ + (n + n / 8) * sizeof(struct xinpcb);
lck_rw_done(udbinfo.ipi_lock);
- return (0);
+ return 0;
}
if (req->newptr != USER_ADDR_NULL) {
lck_rw_done(udbinfo.ipi_lock);
- return (EPERM);
+ return EPERM;
}
/*
gencnt = udbinfo.ipi_gencnt;
n = udbinfo.ipi_count;
- bzero(&xig, sizeof (xig));
- xig.xig_len = sizeof (xig);
+ 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));
+ error = SYSCTL_OUT(req, &xig, sizeof(xig));
if (error) {
lck_rw_done(udbinfo.ipi_lock);
- return (error);
+ return error;
}
/*
* We are done if there is no pcb
*/
if (n == 0) {
lck_rw_done(udbinfo.ipi_lock);
- return (0);
+ return 0;
}
- inp_list = _MALLOC(n * sizeof (*inp_list), M_TEMP, M_WAITOK);
+ inp_list = _MALLOC(n * sizeof(*inp_list), M_TEMP, M_WAITOK);
if (inp_list == 0) {
lck_rw_done(udbinfo.ipi_lock);
- return (ENOMEM);
+ return ENOMEM;
}
for (inp = LIST_FIRST(udbinfo.ipi_listhead), i = 0; inp && i < n;
- inp = LIST_NEXT(inp, inp_list)) {
+ inp = LIST_NEXT(inp, inp_list)) {
if (inp->inp_gencnt <= gencnt &&
- inp->inp_state != INPCB_STATE_DEAD)
+ inp->inp_state != INPCB_STATE_DEAD) {
inp_list[i++] = inp;
+ }
}
n = i;
error = 0;
for (i = 0; i < n; i++) {
+ struct xinpcb xi;
+
inp = inp_list[i];
- if (inp->inp_gencnt <= gencnt &&
- inp->inp_state != INPCB_STATE_DEAD) {
- struct xinpcb xi;
- bzero(&xi, sizeof (xi));
- xi.xi_len = sizeof (xi);
- /* XXX should avoid extra copy */
- inpcb_to_compat(inp, &xi.xi_inp);
- if (inp->inp_socket)
- sotoxsocket(inp->inp_socket, &xi.xi_socket);
- error = SYSCTL_OUT(req, &xi, sizeof (xi));
+ if (in_pcb_checkstate(inp, WNT_ACQUIRE, 0) == WNT_STOPUSING) {
+ continue;
}
+ udp_lock(inp->inp_socket, 1, 0);
+ if (in_pcb_checkstate(inp, WNT_RELEASE, 1) == WNT_STOPUSING) {
+ udp_unlock(inp->inp_socket, 1, 0);
+ continue;
+ }
+ if (inp->inp_gencnt > gencnt) {
+ udp_unlock(inp->inp_socket, 1, 0);
+ continue;
+ }
+
+ bzero(&xi, sizeof(xi));
+ xi.xi_len = sizeof(xi);
+ /* XXX should avoid extra copy */
+ inpcb_to_compat(inp, &xi.xi_inp);
+ if (inp->inp_socket) {
+ sotoxsocket(inp->inp_socket, &xi.xi_socket);
+ }
+
+ udp_unlock(inp->inp_socket, 1, 0);
+
+ error = SYSCTL_OUT(req, &xi, sizeof(xi));
}
if (!error) {
/*
* while we were processing this request, and it
* might be necessary to retry.
*/
- bzero(&xig, sizeof (xig));
- xig.xig_len = sizeof (xig);
+ 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));
+ error = SYSCTL_OUT(req, &xig, sizeof(xig));
}
FREE(inp_list, M_TEMP);
lck_rw_done(udbinfo.ipi_lock);
- return (error);
+ return error;
}
SYSCTL_PROC(_net_inet_udp, UDPCTL_PCBLIST, pcblist,
- CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, udp_pcblist,
+ CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED, 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.ipi_lock);
- 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.ipi_lock);
- return (0);
- }
-
- if (req->newptr != USER_ADDR_NULL) {
- lck_rw_done(udbinfo.ipi_lock);
- 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.ipi_lock);
- return (error);
- }
+ 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.ipi_lock);
+ 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.ipi_lock);
+ return 0;
+ }
+
+ if (req->newptr != USER_ADDR_NULL) {
+ lck_rw_done(udbinfo.ipi_lock);
+ 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.ipi_lock);
+ return error;
+ }
/*
* We are done if there is no pcb
*/
if (n == 0) {
lck_rw_done(udbinfo.ipi_lock);
- return (0);
- }
-
- inp_list = _MALLOC(n * sizeof (*inp_list), M_TEMP, M_WAITOK);
- if (inp_list == 0) {
- lck_rw_done(udbinfo.ipi_lock);
- return (ENOMEM);
- }
-
- for (inp = LIST_FIRST(udbinfo.ipi_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 &&
+ return 0;
+ }
+
+ inp_list = _MALLOC(n * sizeof(*inp_list), M_TEMP, M_WAITOK);
+ if (inp_list == 0) {
+ lck_rw_done(udbinfo.ipi_lock);
+ return ENOMEM;
+ }
+
+ for (inp = LIST_FIRST(udbinfo.ipi_listhead), i = 0; inp && i < n;
+ inp = LIST_NEXT(inp, inp_list)) {
+ 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.ipi_lock);
- return (error);
+ inp_list[i++] = inp;
+ }
+ }
+ n = i;
+
+ error = 0;
+ for (i = 0; i < n; i++) {
+ struct xinpcb64 xi;
+
+ inp = inp_list[i];
+
+ if (in_pcb_checkstate(inp, WNT_ACQUIRE, 0) == WNT_STOPUSING) {
+ continue;
+ }
+ udp_lock(inp->inp_socket, 1, 0);
+ if (in_pcb_checkstate(inp, WNT_RELEASE, 1) == WNT_STOPUSING) {
+ udp_unlock(inp->inp_socket, 1, 0);
+ continue;
+ }
+ if (inp->inp_gencnt > gencnt) {
+ udp_unlock(inp->inp_socket, 1, 0);
+ continue;
+ }
+
+ 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);
+ }
+
+ udp_unlock(inp->inp_socket, 1, 0);
+
+ 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.ipi_lock);
+ return error;
}
SYSCTL_PROC(_net_inet_udp, OID_AUTO, pcblist64,
- CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, udp_pcblist64,
+ CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, udp_pcblist64,
"S,xinpcb64", "List of active UDP sockets");
+#endif /* !CONFIG_EMBEDDED */
static int
udp_pcblist_n SYSCTL_HANDLER_ARGS
{
#pragma unused(oidp, arg1, arg2)
- return (get_pcblist_n(IPPROTO_UDP, req, &udbinfo));
+ return get_pcblist_n(IPPROTO_UDP, req, &udbinfo);
}
SYSCTL_PROC(_net_inet_udp, OID_AUTO, pcblist_n,
- CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, udp_pcblist_n,
+ CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, udp_pcblist_n,
"S,xinpcb_n", "List of active UDP sockets");
__private_extern__ void
-udp_get_ports_used(uint32_t ifindex, int protocol, uint32_t wildcardok,
+udp_get_ports_used(uint32_t ifindex, int protocol, uint32_t flags,
bitstr_t *bitfield)
{
- inpcb_get_ports_used(ifindex, protocol, wildcardok, bitfield, &udbinfo);
+ inpcb_get_ports_used(ifindex, protocol, flags, bitfield,
+ &udbinfo);
}
__private_extern__ uint32_t
udp_count_opportunistic(unsigned int ifindex, u_int32_t flags)
{
- return (inpcb_count_opportunistic(ifindex, &udbinfo, flags));
+ return inpcb_count_opportunistic(ifindex, &udbinfo, flags);
}
__private_extern__ uint32_t
udp_find_anypcb_byaddr(struct ifaddr *ifa)
{
- return (inpcb_find_anypcb_byaddr(ifa, &udbinfo));
+ return inpcb_find_anypcb_byaddr(ifa, &udbinfo);
}
static int
struct in_pktinfo *pktinfo;
struct ifnet *ifp;
- if (outif != NULL)
+ if (outif != NULL) {
*outif = NULL;
+ }
/*
* XXX: Currently, we assume all the optional information is stored
* in a single mbuf.
*/
- if (control->m_next)
- return (EINVAL);
+ if (control->m_next) {
+ return EINVAL;
+ }
- if (control->m_len < CMSG_LEN(0))
- return (EINVAL);
+ if (control->m_len < CMSG_LEN(0)) {
+ return EINVAL;
+ }
- for (cm = M_FIRST_CMSGHDR(control); cm;
+ for (cm = M_FIRST_CMSGHDR(control);
+ is_cmsg_valid(control, cm);
cm = M_NXT_CMSGHDR(control, cm)) {
- if (cm->cmsg_len < sizeof (struct cmsghdr) ||
- cm->cmsg_len > control->m_len)
- return (EINVAL);
-
- if (cm->cmsg_level != IPPROTO_IP || cm->cmsg_type != IP_PKTINFO)
+ if (cm->cmsg_level != IPPROTO_IP ||
+ cm->cmsg_type != IP_PKTINFO) {
continue;
+ }
- if (cm->cmsg_len != CMSG_LEN(sizeof (struct in_pktinfo)))
- return (EINVAL);
+ if (cm->cmsg_len != CMSG_LEN(sizeof(struct in_pktinfo))) {
+ return EINVAL;
+ }
pktinfo = (struct in_pktinfo *)(void *)CMSG_DATA(cm);
if (pktinfo->ipi_ifindex > if_index) {
ifnet_head_done();
- return (ENXIO);
+ return ENXIO;
}
/*
ifp = ifindex2ifnet[pktinfo->ipi_ifindex];
if (ifp == NULL) {
ifnet_head_done();
- return (ENXIO);
+ return ENXIO;
}
if (outif != NULL) {
ifnet_reference(ifp);
*laddr = pktinfo->ipi_spec_dst;
break;
}
- return (0);
+ return 0;
}
-static int
+int
udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
struct mbuf *control, struct proc *p)
{
struct mbuf *inpopts;
struct ip_moptions *mopts;
struct route ro;
- struct ip_out_args ipoa =
- { IFSCOPE_NONE, { 0 }, IPOAF_SELECT_SRCIF, 0 };
+ struct ip_out_args ipoa;
+#if CONTENT_FILTER
+ struct m_tag *cfil_tag = NULL;
+ bool cfil_faddr_use = false;
+ uint32_t cfil_so_state_change_cnt = 0;
+ short cfil_so_options = 0;
+ struct sockaddr *cfil_faddr = NULL;
+#endif
+
+ bzero(&ipoa, sizeof(ipoa));
+ ipoa.ipoa_boundif = IFSCOPE_NONE;
+ ipoa.ipoa_flags = IPOAF_SELECT_SRCIF;
+
struct ifnet *outif = NULL;
struct flowadv *adv = &ipoa.ipoa_flowadv;
- mbuf_svc_class_t msc = MBUF_SC_UNSPEC;
- struct ifnet *origoutifp;
+ int sotc = SO_TC_UNSPEC;
+ int netsvctype = _NET_SERVICE_TYPE_UNSPEC;
+ struct ifnet *origoutifp = NULL;
int flowadv = 0;
+ int tos = IPTOS_UNSPEC;
/* Enable flow advisory only when connected */
flowadv = (so->so_state & SS_ISCONNECTED) ? 1 : 0;
pi_laddr.s_addr = INADDR_ANY;
- KERNEL_DEBUG(DBG_FNC_UDP_OUTPUT | DBG_FUNC_START, 0,0,0,0,0);
+ KERNEL_DEBUG(DBG_FNC_UDP_OUTPUT | DBG_FUNC_START, 0, 0, 0, 0, 0);
+
+ socket_lock_assert_owned(so);
+
+#if CONTENT_FILTER
+ /*
+ * If socket is subject to UDP Content Filter and no addr is passed in,
+ * retrieve CFIL saved state from mbuf and use it if necessary.
+ */
+ if (so->so_cfil_db && !addr) {
+ cfil_tag = cfil_udp_get_socket_state(m, &cfil_so_state_change_cnt, &cfil_so_options, &cfil_faddr);
+ if (cfil_tag) {
+ sin = (struct sockaddr_in *)(void *)cfil_faddr;
+ if (inp && inp->inp_faddr.s_addr == INADDR_ANY) {
+ /*
+ * Socket is unconnected, simply use the saved faddr as 'addr' to go through
+ * the connect/disconnect logic.
+ */
+ addr = (struct sockaddr *)cfil_faddr;
+ } else if ((so->so_state_change_cnt != cfil_so_state_change_cnt) &&
+ (inp->inp_fport != sin->sin_port ||
+ inp->inp_faddr.s_addr != sin->sin_addr.s_addr)) {
+ /*
+ * Socket is connected but socket state and dest addr/port changed.
+ * We need to use the saved faddr info.
+ */
+ cfil_faddr_use = true;
+ }
+ }
+ }
+#endif
- lck_mtx_assert(&inp->inpcb_mtx, LCK_MTX_ASSERT_OWNED);
if (control != NULL) {
- msc = mbuf_service_class_from_control(control);
+ tos = so_tos_from_control(control);
+ sotc = so_tc_from_control(control, &netsvctype);
VERIFY(outif == NULL);
error = udp_check_pktinfo(control, &outif, &pi_laddr);
m_freem(control);
control = NULL;
- if (error)
+ if (error) {
goto release;
+ }
pktinfo++;
- if (outif != NULL)
+ if (outif != NULL) {
ipoa.ipoa_boundif = outif->if_index;
+ }
+ }
+ if (sotc == SO_TC_UNSPEC) {
+ sotc = so->so_traffic_class;
+ netsvctype = so->so_netsvctype;
}
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))));
+ (htons((u_short)len + sizeof(struct udphdr))));
- if (len + sizeof (struct udpiphdr) > IP_MAXPACKET) {
+ if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
error = EMSGSIZE;
goto release;
}
if (ipoa.ipoa_boundif == IFSCOPE_NONE &&
(inp->inp_flags & INP_BOUND_IF)) {
VERIFY(inp->inp_boundifp != NULL);
- ifnet_reference(inp->inp_boundifp); /* for this routine */
- if (outif != NULL)
+ ifnet_reference(inp->inp_boundifp); /* for this routine */
+ if (outif != NULL) {
ifnet_release(outif);
+ }
outif = inp->inp_boundifp;
ipoa.ipoa_boundif = outif->if_index;
}
- if (inp->inp_flags & INP_NO_IFT_CELLULAR)
+ if (INP_NO_CELLULAR(inp)) {
ipoa.ipoa_flags |= IPOAF_NO_CELLULAR;
+ }
+ if (INP_NO_EXPENSIVE(inp)) {
+ ipoa.ipoa_flags |= IPOAF_NO_EXPENSIVE;
+ }
+ if (INP_NO_CONSTRAINED(inp)) {
+ ipoa.ipoa_flags |= IPOAF_NO_CONSTRAINED;
+ }
+ if (INP_AWDL_UNRESTRICTED(inp)) {
+ ipoa.ipoa_flags |= IPOAF_AWDL_UNRESTRICTED;
+ }
+ ipoa.ipoa_sotc = sotc;
+ ipoa.ipoa_netsvctype = netsvctype;
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 we are using cfil saved state, go through this cache cleanup
+ * so that we can get a new route.
*/
- if (ROUTE_UNUSABLE(&inp->inp_route)) {
+ if (ROUTE_UNUSABLE(&inp->inp_route)
+#if CONTENT_FILTER
+ || cfil_faddr_use
+#endif
+ ) {
struct in_ifaddr *ia = NULL;
ROUTE_RELEASE(&inp->inp_route);
inp->inp_last_outifp = NULL;
}
}
- if (ia != NULL)
+ if (ia != NULL) {
IFA_REMREF(&ia->ia_ifa);
+ }
}
- origoutifp = inp->inp_last_outifp;
-
/*
* IP_PKTINFO option check. If a temporary scope or src address
* is provided, use it for this packet only and make sure we forget
origladdr.s_addr = INADDR_ANY;
/* we don't want to keep the laddr or route */
udp_dodisconnect = 1;
- /* remember we don't care about src addr.*/
+ /* remember we don't care about src addr */
inp->inp_flags |= INP_INADDR_ANY;
} else {
origladdr = laddr = inp->inp_laddr;
lport = inp->inp_lport;
fport = inp->inp_fport;
+#if CONTENT_FILTER
+ if (cfil_faddr_use) {
+ faddr = ((struct sockaddr_in *)(void *)cfil_faddr)->sin_addr;
+ fport = ((struct sockaddr_in *)(void *)cfil_faddr)->sin_port;
+ }
+#endif
+
if (addr) {
sin = (struct sockaddr_in *)(void *)addr;
if (faddr.s_addr != INADDR_ANY) {
* if the input runs at the same time we do this.
*/
/* if we have a source address specified, use that */
- if (pi_laddr.s_addr != INADDR_ANY)
+ if (pi_laddr.s_addr != INADDR_ANY) {
inp->inp_laddr = pi_laddr;
+ }
/*
* If a scope is specified, use it. Scope from
* IP_PKTINFO takes precendence over the the scope
*/
error = in_pcbconnect(inp, addr, p, ipoa.ipoa_boundif,
&outif);
- if (error)
+ if (error) {
goto release;
+ }
laddr = inp->inp_laddr;
lport = inp->inp_lport;
udp_dodisconnect = 1;
/* synch up in case in_pcbladdr() overrides */
- if (outif != NULL && ipoa.ipoa_boundif != IFSCOPE_NONE)
+ if (outif != NULL && ipoa.ipoa_boundif != IFSCOPE_NONE) {
ipoa.ipoa_boundif = outif->if_index;
- }
- else {
+ }
+ } else {
/*
* Fast path case
*
*/
if (laddr.s_addr == INADDR_ANY) {
if ((error = in_pcbladdr(inp, addr, &laddr,
- ipoa.ipoa_boundif, &outif)) != 0)
+ ipoa.ipoa_boundif, &outif, 0)) != 0) {
goto release;
+ }
/*
* from pcbconnect: remember we don't
* care about src addr.
/* synch up in case in_pcbladdr() overrides */
if (outif != NULL &&
- ipoa.ipoa_boundif != IFSCOPE_NONE)
+ ipoa.ipoa_boundif != IFSCOPE_NONE) {
ipoa.ipoa_boundif = outif->if_index;
+ }
}
faddr = sin->sin_addr;
mac_mbuf_label_associate_inpcb(inp, m);
#endif /* CONFIG_MACF_NET */
- if (inp->inp_flowhash == 0)
+ if (inp->inp_flowhash == 0) {
inp->inp_flowhash = inp_calc_flowhash(inp);
+ }
+
+ if (fport == htons(53) && !(so->so_flags1 & SOF1_DNS_COUNTED)) {
+ so->so_flags1 |= SOF1_DNS_COUNTED;
+ INC_ATOMIC_INT64_LIM(net_api_stats.nas_socket_inet_dgram_dns);
+ }
/*
* Calculate data length and get a mbuf
* for UDP and IP headers.
*/
- M_PREPEND(m, sizeof (struct udpiphdr), M_DONTWAIT);
+ M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT, 1);
if (m == 0) {
error = ENOBUFS;
goto abort;
* and addresses and length put into network format.
*/
ui = mtod(m, struct udpiphdr *);
- bzero(ui->ui_x1, sizeof (ui->ui_x1)); /* XXX still needed? */
+ bzero(ui->ui_x1, sizeof(ui->ui_x1)); /* XXX still needed? */
ui->ui_pr = IPPROTO_UDP;
ui->ui_src = laddr;
ui->ui_dst = faddr;
ui->ui_sport = lport;
ui->ui_dport = fport;
- ui->ui_ulen = htons((u_short)len + sizeof (struct udphdr));
+ ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));
/*
- * Set up checksum and output datagram.
+ * Set up checksum to pseudo header checksum and output datagram.
+ *
+ * Treat flows to be CLAT46'd as IPv6 flow and compute checksum
+ * no matter what, as IPv6 mandates checksum for UDP.
+ *
+ * Here we only compute the one's complement sum of the pseudo header.
+ * The payload computation and final complement is delayed to much later
+ * in IP processing to decide if remaining computation needs to be done
+ * through offload.
+ *
+ * That is communicated by setting CSUM_UDP in csum_flags.
+ * The offset of checksum from the start of ULP header is communicated
+ * through csum_data.
+ *
+ * Note since this already contains the pseudo checksum header, any
+ * later operation at IP layer that modify the values used here must
+ * update the checksum as well (for example NAT etc).
*/
- if (udpcksum && !(inp->inp_flags & INP_UDP_NOCKSUM)) {
+ if ((inp->inp_flags2 & INP2_CLAT46_FLOW) ||
+ (udpcksum && !(inp->inp_flags & INP_UDP_NOCKSUM))) {
ui->ui_sum = in_pseudo(ui->ui_src.s_addr, ui->ui_dst.s_addr,
- htons((u_short)len + sizeof (struct udphdr) + IPPROTO_UDP));
- m->m_pkthdr.csum_flags = CSUM_UDP;
+ htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));
+ m->m_pkthdr.csum_flags = (CSUM_UDP | CSUM_ZERO_INVERT);
m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
} else {
ui->ui_sum = 0;
}
- ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len;
- ((struct ip *)ui)->ip_ttl = inp->inp_ip_ttl; /* XXX */
- ((struct ip *)ui)->ip_tos = inp->inp_ip_tos; /* XXX */
+ ((struct ip *)ui)->ip_len = sizeof(struct udpiphdr) + len;
+ ((struct ip *)ui)->ip_ttl = inp->inp_ip_ttl; /* XXX */
+ if (tos != IPTOS_UNSPEC) {
+ ((struct ip *)ui)->ip_tos = (uint8_t)(tos & IPTOS_MASK);
+ } else {
+ ((struct ip *)ui)->ip_tos = inp->inp_ip_tos; /* XXX */
+ }
udpstat.udps_opackets++;
KERNEL_DEBUG(DBG_LAYER_OUT_END, ui->ui_dport, ui->ui_sport,
- ui->ui_src.s_addr, ui->ui_dst.s_addr, ui->ui_ulen);
+ ui->ui_src.s_addr, ui->ui_dst.s_addr, ui->ui_ulen);
+
+#if NECP
+ {
+ necp_kernel_policy_id policy_id;
+ necp_kernel_policy_id skip_policy_id;
+ u_int32_t route_rule_id;
+
+ /*
+ * We need a route to perform NECP route rule checks
+ */
+ if (net_qos_policy_restricted != 0 &&
+ ROUTE_UNUSABLE(&inp->inp_route)) {
+ struct sockaddr_in to;
+ struct sockaddr_in from;
+
+ ROUTE_RELEASE(&inp->inp_route);
+
+ bzero(&from, sizeof(struct sockaddr_in));
+ from.sin_family = AF_INET;
+ from.sin_len = sizeof(struct sockaddr_in);
+ from.sin_addr = laddr;
+
+ bzero(&to, sizeof(struct sockaddr_in));
+ to.sin_family = AF_INET;
+ to.sin_len = sizeof(struct sockaddr_in);
+ to.sin_addr = faddr;
+
+ inp->inp_route.ro_dst.sa_family = AF_INET;
+ inp->inp_route.ro_dst.sa_len = sizeof(struct sockaddr_in);
+ ((struct sockaddr_in *)(void *)&inp->inp_route.ro_dst)->sin_addr =
+ faddr;
+
+ rtalloc_scoped(&inp->inp_route, ipoa.ipoa_boundif);
+
+ inp_update_necp_policy(inp, (struct sockaddr *)&from,
+ (struct sockaddr *)&to, ipoa.ipoa_boundif);
+ inp->inp_policyresult.results.qos_marking_gencount = 0;
+ }
+
+ if (!necp_socket_is_allowed_to_send_recv_v4(inp, lport, fport,
+ &laddr, &faddr, NULL, &policy_id, &route_rule_id, &skip_policy_id)) {
+ error = EHOSTUNREACH;
+ goto abort;
+ }
+
+ necp_mark_packet_from_socket(m, inp, policy_id, route_rule_id, skip_policy_id);
+
+ if (net_qos_policy_restricted != 0) {
+ necp_socket_update_qos_marking(inp,
+ inp->inp_route.ro_rt, NULL, route_rule_id);
+ }
+ }
+#endif /* NECP */
+ if ((so->so_flags1 & SOF1_QOSMARKING_ALLOWED)) {
+ ipoa.ipoa_flags |= IPOAF_QOSMARKING_ALLOWED;
+ }
#if IPSEC
- if (ipsec_bypass == 0 && ipsec_setsocket(m, inp->inp_socket) != 0) {
+ if (inp->inp_sp != NULL && ipsec_setsocket(m, inp->inp_socket) != 0) {
error = ENOBUFS;
goto abort;
}
#endif /* IPSEC */
inpopts = inp->inp_options;
+#if CONTENT_FILTER
+ if (cfil_tag && (inp->inp_socket->so_options != cfil_so_options)) {
+ soopts |= (cfil_so_options & (SO_DONTROUTE | SO_BROADCAST));
+ } else
+#endif
soopts |= (inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST));
+
mopts = inp->inp_moptions;
if (mopts != NULL) {
IMO_LOCK(mopts);
/* Copy the cached route and take an extra reference */
inp_route_copyout(inp, &ro);
- set_packet_service_class(m, so, msc, 0);
+ set_packet_service_class(m, so, sotc, 0);
m->m_pkthdr.pkt_flowsrc = FLOWSRC_INPCB;
m->m_pkthdr.pkt_flowid = inp->inp_flowhash;
m->m_pkthdr.pkt_proto = IPPROTO_UDP;
m->m_pkthdr.pkt_flags |= (PKTF_FLOW_ID | PKTF_FLOW_LOCALSRC);
- if (flowadv)
+ if (flowadv) {
m->m_pkthdr.pkt_flags |= PKTF_FLOW_ADV;
+ }
+ m->m_pkthdr.tx_udp_pid = so->last_pid;
+ if (so->so_flags & SOF_DELEGATED) {
+ m->m_pkthdr.tx_udp_e_pid = so->e_pid;
+ } else {
+ m->m_pkthdr.tx_udp_e_pid = 0;
+ }
- if (ipoa.ipoa_boundif != IFSCOPE_NONE)
+ if (ipoa.ipoa_boundif != IFSCOPE_NONE) {
ipoa.ipoa_flags |= IPOAF_BOUND_IF;
+ }
- if (laddr.s_addr != INADDR_ANY)
+ if (laddr.s_addr != INADDR_ANY) {
ipoa.ipoa_flags |= IPOAF_BOUND_SRCADDR;
+ }
inp->inp_sndinprog_cnt++;
error = ip_output(m, inpopts, &ro, soopts, mopts, &ipoa);
m = NULL;
socket_lock(so, 0);
- if (mopts != NULL)
+ if (mopts != NULL) {
IMO_REMREF(mopts);
+ }
if (error == 0 && nstat_collect) {
- boolean_t cell, wifi;
+ boolean_t cell, wifi, wired;
if (ro.ro_rt != NULL) {
cell = IFNET_IS_CELLULAR(ro.ro_rt->rt_ifp);
wifi = (!cell && IFNET_IS_WIFI(ro.ro_rt->rt_ifp));
+ wired = (!wifi && IFNET_IS_WIRED(ro.ro_rt->rt_ifp));
} else {
- cell = wifi = FALSE;
+ cell = wifi = wired = FALSE;
}
- INP_ADD_STAT(inp, cell, wifi, txpackets, 1);
- INP_ADD_STAT(inp, cell, wifi, txbytes, len);
+ INP_ADD_STAT(inp, cell, wifi, wired, txpackets, 1);
+ INP_ADD_STAT(inp, cell, wifi, wired, txbytes, len);
+ inp_set_activity_bitmap(inp);
}
if (flowadv && (adv->code == FADV_FLOW_CONTROLLED ||
adv->code == FADV_SUSPENDED)) {
- /* return a hint to the application that
+ /*
+ * return a hint to the application that
* the packet has been dropped
*/
error = ENOBUFS;
}
VERIFY(inp->inp_sndinprog_cnt > 0);
- if ( --inp->inp_sndinprog_cnt == 0)
+ if (--inp->inp_sndinprog_cnt == 0) {
inp->inp_flags &= ~(INP_FC_FEEDBACK);
+ if (inp->inp_sndingprog_waiters > 0) {
+ wakeup(&inp->inp_sndinprog_cnt);
+ }
+ }
/* Synchronize PCB cached route */
inp_route_copyin(inp, &ro);
/* Always discard the cached route for unconnected socket */
ROUTE_RELEASE(&inp->inp_route);
in_pcbdisconnect(inp);
- inp->inp_laddr = origladdr; /* XXX rehash? */
+ inp->inp_laddr = origladdr; /* XXX rehash? */
/* no reference needed */
inp->inp_last_outifp = origoutifp;
} else if (inp->inp_route.ro_rt != NULL) {
struct rtentry *rt = inp->inp_route.ro_rt;
struct ifnet *outifp;
- if (rt->rt_flags & (RTF_MULTICAST|RTF_BROADCAST))
- rt = NULL; /* unusable */
+ if (rt->rt_flags & (RTF_MULTICAST | RTF_BROADCAST)) {
+ rt = NULL; /* unusable */
+ }
+#if CONTENT_FILTER
+ /*
+ * Discard temporary route for cfil case
+ */
+ if (cfil_faddr_use) {
+ rt = NULL; /* unusable */
+ }
+#endif
+
/*
* Always discard if it is a multicast or broadcast route.
*/
- if (rt == NULL)
+ if (rt == NULL) {
ROUTE_RELEASE(&inp->inp_route);
+ }
/*
* If the destination route is unicast, update outifp with
* that of the route interface used by IP.
*/
- if (rt != NULL && (outifp = rt->rt_ifp) != inp->inp_last_outifp)
- inp->inp_last_outifp = outifp; /* no reference needed */
+ if (rt != NULL &&
+ (outifp = rt->rt_ifp) != inp->inp_last_outifp) {
+ inp->inp_last_outifp = outifp; /* no reference needed */
+
+ so->so_pktheadroom = P2ROUNDUP(
+ sizeof(struct udphdr) +
+ sizeof(struct ip) +
+ ifnet_hdrlen(outifp) +
+ ifnet_mbuf_packetpreamblelen(outifp),
+ sizeof(u_int32_t));
+ }
} else {
ROUTE_RELEASE(&inp->inp_route);
}
/*
- * If output interface was cellular, and this socket is denied
- * access to it, generate an event.
+ * If output interface was cellular/expensive, and this socket is
+ * denied access to it, generate an event.
*/
if (error != 0 && (ipoa.ipoa_retflags & IPOARF_IFDENIED) &&
- (inp->inp_flags & INP_NO_IFT_CELLULAR))
- soevent(so, (SO_FILT_HINT_LOCKED|SO_FILT_HINT_IFDENIED));
+ (INP_NO_CELLULAR(inp) || INP_NO_EXPENSIVE(inp) || INP_NO_CONSTRAINED(inp))) {
+ soevent(so, (SO_FILT_HINT_LOCKED | SO_FILT_HINT_IFDENIED));
+ }
release:
KERNEL_DEBUG(DBG_FNC_UDP_OUTPUT | DBG_FUNC_END, error, 0, 0, 0, 0);
- if (m != NULL)
+ if (m != NULL) {
m_freem(m);
+ }
- if (outif != NULL)
+ if (outif != NULL) {
ifnet_release(outif);
+ }
+
+#if CONTENT_FILTER
+ if (cfil_tag) {
+ m_tag_free(cfil_tag);
+ }
+#endif
- return (error);
+ return error;
}
-u_int32_t udp_sendspace = 9216; /* really max datagram size */
+u_int32_t udp_sendspace = 9216; /* really max datagram size */
/* 187 1K datagrams (approx 192 KB) */
-u_int32_t udp_recvspace = 187 * (1024 +
+u_int32_t udp_recvspace = 187 * (1024 +
#if INET6
- sizeof (struct sockaddr_in6)
+ sizeof(struct sockaddr_in6)
#else /* !INET6 */
- sizeof (struct sockaddr_in)
+ sizeof(struct sockaddr_in)
#endif /* !INET6 */
- );
+ );
/* Check that the values of udp send and recv space do not exceed sb_max */
static int
#pragma unused(arg1, arg2)
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;
+ u_quad_t sb_effective_max = (sb_max / (MSIZE + MCLBYTES)) * MCLBYTES;
switch (oidp->oid_number) {
case UDPCTL_RECVSPACE:
default:
return EINVAL;
}
- error = sysctl_io_number(req, *space_p, sizeof (u_int32_t),
+ 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);
+ 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 | CTLFLAG_LOCKED, &udp_sendspace, 0,
&sysctl_udp_sospace, "IU", "Maximum outgoing UDP datagram size");
-static int
+int
udp_abort(struct socket *so)
{
struct inpcb *inp;
}
soisdisconnected(so);
in_pcbdetach(inp);
- return (0);
+ return 0;
}
-static int
+int
udp_attach(struct socket *so, int proto, struct proc *p)
{
#pragma unused(proto)
inp = sotoinpcb(so);
if (inp != NULL) {
- panic ("%s so=%p inp=%p\n", __func__, so, inp);
+ panic("%s so=%p inp=%p\n", __func__, so, inp);
/* NOTREACHED */
}
error = in_pcballoc(so, &udbinfo, p);
- if (error != 0)
- return (error);
+ if (error != 0) {
+ return error;
+ }
error = soreserve(so, udp_sendspace, udp_recvspace);
- if (error != 0)
- return (error);
+ if (error != 0) {
+ return error;
+ }
inp = (struct inpcb *)so->so_pcb;
inp->inp_vflag |= INP_IPV4;
inp->inp_ip_ttl = ip_defttl;
- if (nstat_collect)
+ if (nstat_collect) {
nstat_udp_new_pcb(inp);
- return (0);
+ }
+ return 0;
}
-static int
+int
udp_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
{
struct inpcb *inp;
int error;
if (nam->sa_family != 0 && nam->sa_family != AF_INET &&
- nam->sa_family != AF_INET6)
- return (EAFNOSUPPORT);
+ nam->sa_family != AF_INET6) {
+ return EAFNOSUPPORT;
+ }
inp = sotoinpcb(so);
- if (inp == NULL || (inp->inp_flags2 & INP2_WANT_FLOW_DIVERT))
- return (inp == NULL ? EINVAL : EPROTOTYPE);
+ if (inp == NULL) {
+ return EINVAL;
+ }
error = in_pcbbind(inp, nam, p);
- return (error);
+
+#if NECP
+ /* Update NECP client with bind result if not in middle of connect */
+ if (error == 0 &&
+ (inp->inp_flags2 & INP2_CONNECT_IN_PROGRESS) &&
+ !uuid_is_null(inp->necp_client_uuid)) {
+ socket_unlock(so, 0);
+ necp_client_assign_from_socket(so->last_pid, inp->necp_client_uuid, inp);
+ socket_lock(so, 0);
+ }
+#endif /* NECP */
+
+ return error;
}
-static int
+int
udp_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
{
struct inpcb *inp;
int error;
inp = sotoinpcb(so);
- if (inp == NULL || (inp->inp_flags2 & INP2_WANT_FLOW_DIVERT))
- return (inp == NULL ? EINVAL : EPROTOTYPE);
- if (inp->inp_faddr.s_addr != INADDR_ANY)
- return (EISCONN);
+ if (inp == NULL) {
+ return EINVAL;
+ }
+ if (inp->inp_faddr.s_addr != INADDR_ANY) {
+ return EISCONN;
+ }
+
+ if (!(so->so_flags1 & SOF1_CONNECT_COUNTED)) {
+ so->so_flags1 |= SOF1_CONNECT_COUNTED;
+ INC_ATOMIC_INT64_LIM(net_api_stats.nas_socket_inet_dgram_connected);
+ }
+
+#if NECP
+#if FLOW_DIVERT
+ if (necp_socket_should_use_flow_divert(inp)) {
+ uint32_t fd_ctl_unit =
+ necp_socket_get_flow_divert_control_unit(inp);
+ if (fd_ctl_unit > 0) {
+ error = flow_divert_pcb_init(so, fd_ctl_unit);
+ if (error == 0) {
+ error = flow_divert_connect_out(so, nam, p);
+ }
+ } else {
+ error = ENETDOWN;
+ }
+ return error;
+ }
+#endif /* FLOW_DIVERT */
+#endif /* NECP */
+
error = in_pcbconnect(inp, nam, p, IFSCOPE_NONE, NULL);
if (error == 0) {
+#if NECP
+ /* Update NECP client with connected five-tuple */
+ if (!uuid_is_null(inp->necp_client_uuid)) {
+ socket_unlock(so, 0);
+ necp_client_assign_from_socket(so->last_pid, inp->necp_client_uuid, inp);
+ socket_lock(so, 0);
+ }
+#endif /* NECP */
+
soisconnected(so);
- if (inp->inp_flowhash == 0)
+ if (inp->inp_flowhash == 0) {
inp->inp_flowhash = inp_calc_flowhash(inp);
+ }
}
- return (error);
+ return error;
}
int
-udp_connectx_common(struct socket *so, int af,
- struct sockaddr_list **src_sl, struct sockaddr_list **dst_sl,
- struct proc *p, uint32_t ifscope, associd_t aid, connid_t *pcid,
- uint32_t flags, void *arg, uint32_t arglen)
+udp_connectx_common(struct socket *so, int af, struct sockaddr *src, struct sockaddr *dst,
+ struct proc *p, uint32_t ifscope, sae_associd_t aid, sae_connid_t *pcid,
+ uint32_t flags, void *arg, uint32_t arglen,
+ struct uio *uio, user_ssize_t *bytes_written)
{
#pragma unused(aid, flags, arg, arglen)
- struct sockaddr_entry *src_se = NULL, *dst_se = NULL;
struct inpcb *inp = sotoinpcb(so);
- int error;
+ int error = 0;
+ user_ssize_t datalen = 0;
- if (inp == NULL)
- return (EINVAL);
+ if (inp == NULL) {
+ return EINVAL;
+ }
- VERIFY(dst_sl != NULL);
+ VERIFY(dst != NULL);
- /* select source (if specified) and destination addresses */
- error = in_selectaddrs(af, src_sl, &src_se, dst_sl, &dst_se);
- if (error != 0)
- return (error);
+ ASSERT(!(inp->inp_flags2 & INP2_CONNECT_IN_PROGRESS));
+ inp->inp_flags2 |= INP2_CONNECT_IN_PROGRESS;
- VERIFY(*dst_sl != NULL && dst_se != NULL);
- VERIFY(src_se == NULL || *src_sl != NULL);
- VERIFY(dst_se->se_addr->sa_family == af);
- VERIFY(src_se == NULL || src_se->se_addr->sa_family == af);
+#if NECP
+ inp_update_necp_policy(inp, src, dst, ifscope);
+#endif /* NECP */
/* bind socket to the specified interface, if requested */
if (ifscope != IFSCOPE_NONE &&
- (error = inp_bindif(inp, ifscope, NULL)) != 0)
- return (error);
+ (error = inp_bindif(inp, ifscope, NULL)) != 0) {
+ goto done;
+ }
/* if source address and/or port is specified, bind to it */
- if (src_se != NULL) {
- struct sockaddr *sa = src_se->se_addr;
- error = sobindlock(so, sa, 0); /* already locked */
- if (error != 0)
- return (error);
+ if (src != NULL) {
+ error = sobindlock(so, src, 0); /* already locked */
+ if (error != 0) {
+ goto done;
+ }
}
switch (af) {
case AF_INET:
- error = udp_connect(so, dst_se->se_addr, p);
+ error = udp_connect(so, dst, p);
break;
#if INET6
case AF_INET6:
- error = udp6_connect(so, dst_se->se_addr, p);
+ error = udp6_connect(so, dst, p);
break;
#endif /* INET6 */
default:
/* NOTREACHED */
}
- if (error == 0 && pcid != NULL)
- *pcid = 1; /* there is only 1 connection for a UDP */
+ if (error != 0) {
+ goto done;
+ }
- return (error);
+ /*
+ * If there is data, copy it. DATA_IDEMPOTENT is ignored.
+ * CONNECT_RESUME_ON_READ_WRITE is ignored.
+ */
+ if (uio != NULL) {
+ socket_unlock(so, 0);
+
+ VERIFY(bytes_written != NULL);
+
+ datalen = uio_resid(uio);
+ error = so->so_proto->pr_usrreqs->pru_sosend(so, NULL,
+ (uio_t)uio, NULL, NULL, 0);
+ socket_lock(so, 0);
+
+ /* If error returned is EMSGSIZE, for example, disconnect */
+ if (error == 0 || error == EWOULDBLOCK) {
+ *bytes_written = datalen - uio_resid(uio);
+ } else {
+ (void) so->so_proto->pr_usrreqs->pru_disconnectx(so,
+ SAE_ASSOCID_ANY, SAE_CONNID_ANY);
+ }
+ /*
+ * mask the EWOULDBLOCK error so that the caller
+ * knows that atleast the connect was successful.
+ */
+ if (error == EWOULDBLOCK) {
+ error = 0;
+ }
+ }
+
+ if (error == 0 && pcid != NULL) {
+ *pcid = 1; /* there is only 1 connection for UDP */
+ }
+done:
+ inp->inp_flags2 &= ~INP2_CONNECT_IN_PROGRESS;
+ return error;
}
-static int
-udp_connectx(struct socket *so, struct sockaddr_list **src_sl,
- struct sockaddr_list **dst_sl, struct proc *p, uint32_t ifscope,
- associd_t aid, connid_t *pcid, uint32_t flags, void *arg,
- uint32_t arglen)
+int
+udp_connectx(struct socket *so, struct sockaddr *src,
+ struct sockaddr *dst, struct proc *p, uint32_t ifscope,
+ sae_associd_t aid, sae_connid_t *pcid, uint32_t flags, void *arg,
+ uint32_t arglen, struct uio *uio, user_ssize_t *bytes_written)
{
- return (udp_connectx_common(so, AF_INET, src_sl, dst_sl,
- p, ifscope, aid, pcid, flags, arg, arglen));
+ return udp_connectx_common(so, AF_INET, src, dst,
+ p, ifscope, aid, pcid, flags, arg, arglen, uio, bytes_written);
}
-static int
+int
udp_detach(struct socket *so)
{
struct inpcb *inp;
panic("%s: so=%p null inp\n", __func__, so);
/* NOTREACHED */
}
+
+ /*
+ * If this is a socket that does not want to wakeup the device
+ * for it's traffic, the application might be waiting for
+ * close to complete before going to sleep. Send a notification
+ * for this kind of sockets
+ */
+ if (so->so_options & SO_NOWAKEFROMSLEEP) {
+ socket_post_kev_msg_closed(so);
+ }
+
in_pcbdetach(inp);
inp->inp_state = INPCB_STATE_DEAD;
- return (0);
+ return 0;
}
-static int
+int
udp_disconnect(struct socket *so)
{
struct inpcb *inp;
inp = sotoinpcb(so);
- if (inp == NULL || (inp->inp_flags2 & INP2_WANT_FLOW_DIVERT))
- return (inp == NULL ? EINVAL : EPROTOTYPE);
- if (inp->inp_faddr.s_addr == INADDR_ANY)
- return (ENOTCONN);
+ if (inp == NULL
+#if NECP
+ || (necp_socket_should_use_flow_divert(inp))
+#endif /* NECP */
+ ) {
+ return inp == NULL ? EINVAL : EPROTOTYPE;
+ }
+ if (inp->inp_faddr.s_addr == INADDR_ANY) {
+ return ENOTCONN;
+ }
in_pcbdisconnect(inp);
inp_reset_fc_state(inp);
inp->inp_laddr.s_addr = INADDR_ANY;
- so->so_state &= ~SS_ISCONNECTED; /* XXX */
+ so->so_state &= ~SS_ISCONNECTED; /* XXX */
inp->inp_last_outifp = NULL;
- return (0);
+
+ return 0;
}
-static int
-udp_disconnectx(struct socket *so, associd_t aid, connid_t cid)
+int
+udp_disconnectx(struct socket *so, sae_associd_t aid, sae_connid_t cid)
{
#pragma unused(cid)
- if (aid != ASSOCID_ANY && aid != ASSOCID_ALL)
- return (EINVAL);
+ if (aid != SAE_ASSOCID_ANY && aid != SAE_ASSOCID_ALL) {
+ return EINVAL;
+ }
- return (udp_disconnect(so));
+ return udp_disconnect(so);
}
-static int
+int
udp_send(struct socket *so, int flags, struct mbuf *m,
struct sockaddr *addr, struct mbuf *control, struct proc *p)
{
+#ifndef FLOW_DIVERT
#pragma unused(flags)
+#endif /* !(FLOW_DIVERT) */
struct inpcb *inp;
inp = sotoinpcb(so);
- if (inp == NULL || (inp->inp_flags2 & INP2_WANT_FLOW_DIVERT)) {
- if (m != NULL)
+ if (inp == NULL) {
+ if (m != NULL) {
m_freem(m);
- if (control != NULL)
+ }
+ if (control != NULL) {
m_freem(control);
- return (inp == NULL ? EINVAL : EPROTOTYPE);
+ }
+ return EINVAL;
}
- return (udp_output(inp, m, addr, control, p));
+#if NECP
+#if FLOW_DIVERT
+ if (necp_socket_should_use_flow_divert(inp)) {
+ /* Implicit connect */
+ return flow_divert_implicit_data_out(so, flags, m, addr,
+ control, p);
+ }
+#endif /* FLOW_DIVERT */
+#endif /* NECP */
+
+ return udp_output(inp, m, addr, control, p);
}
int
struct inpcb *inp;
inp = sotoinpcb(so);
- if (inp == NULL)
- return (EINVAL);
+ if (inp == NULL) {
+ return EINVAL;
+ }
socantsendmore(so);
- return (0);
+ return 0;
}
int
{
void *lr_saved;
- if (debug == NULL)
+ if (debug == NULL) {
lr_saved = __builtin_return_address(0);
- else
+ } else {
lr_saved = debug;
+ }
if (so->so_pcb != NULL) {
- lck_mtx_assert(&((struct inpcb *)so->so_pcb)->inpcb_mtx,
+ 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 {
so, lr_saved, solockhistory_nr(so));
/* NOTREACHED */
}
- if (refcount)
+ if (refcount) {
so->so_usecount++;
+ }
so->lock_lr[so->next_lock_lr] = lr_saved;
- so->next_lock_lr = (so->next_lock_lr+1) % SO_LCKDBG_MAX;
- return (0);
+ so->next_lock_lr = (so->next_lock_lr + 1) % SO_LCKDBG_MAX;
+ return 0;
}
int
{
void *lr_saved;
- if (debug == NULL)
+ if (debug == NULL) {
lr_saved = __builtin_return_address(0);
- else
+ } else {
lr_saved = debug;
+ }
- if (refcount)
+ if (refcount) {
+ VERIFY(so->so_usecount > 0);
so->so_usecount--;
-
+ }
if (so->so_pcb == NULL) {
panic("%s: so=%p NO PCB! lr=%p lrh= %s\n", __func__,
so, lr_saved, solockhistory_nr(so));
/* NOTREACHED */
} else {
- lck_mtx_assert(&((struct inpcb *)so->so_pcb)->inpcb_mtx,
+ 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;
+ so->next_unlock_lr = (so->next_unlock_lr + 1) % SO_LCKDBG_MAX;
lck_mtx_unlock(&((struct inpcb *)so->so_pcb)->inpcb_mtx);
}
- return (0);
+ return 0;
}
lck_mtx_t *
-udp_getlock(struct socket *so, int locktype)
+udp_getlock(struct socket *so, int flags)
{
-#pragma unused(locktype)
+#pragma unused(flags)
struct inpcb *inp = sotoinpcb(so);
if (so->so_pcb == NULL) {
so, solockhistory_nr(so));
/* NOTREACHED */
}
- return (&inp->inpcb_mtx);
+ return &inp->inpcb_mtx;
}
/*
* wantcnt to that value. If the PCB is already dead,
* keep gc active to anticipate wantcnt changing.
*/
- if (inp->inp_wantcnt != WNT_STOPUSING)
+ if (inp->inp_wantcnt != WNT_STOPUSING) {
continue;
+ }
/*
* Skip if busy, no hurry for cleanup. Keep gc active
* and try the lock again during next round.
*/
- if (!lck_mtx_try_lock(&inp->inpcb_mtx)) {
+ if (!socket_try_lock(inp->inp_socket)) {
atomic_add_32(&ipi->ipi_gc_req.intimer_fast, 1);
continue;
}
if (so->so_usecount == 0) {
if (inp->inp_state != INPCB_STATE_DEAD) {
#if INET6
- if (SOCK_CHECK_DOM(so, PF_INET6))
+ if (SOCK_CHECK_DOM(so, PF_INET6)) {
in6_pcbdetach(inp);
- else
+ } else
#endif /* INET6 */
- in_pcbdetach(inp);
+ in_pcbdetach(inp);
}
in_pcbdispose(inp);
} else {
- lck_mtx_unlock(&inp->inpcb_mtx);
+ socket_unlock(so, 0);
atomic_add_32(&ipi->ipi_gc_req.intimer_fast, 1);
}
}
lck_rw_done(ipi->ipi_lock);
-
- return;
}
static int
udp_getstat SYSCTL_HANDLER_ARGS
{
#pragma unused(oidp, arg1, arg2)
- if (req->oldptr == USER_ADDR_NULL)
- req->oldlen = (size_t)sizeof (struct udpstat);
+ if (req->oldptr == USER_ADDR_NULL) {
+ req->oldlen = (size_t)sizeof(struct udpstat);
+ }
- return (SYSCTL_OUT(req, &udpstat, MIN(sizeof (udpstat), req->oldlen)));
+ return SYSCTL_OUT(req, &udpstat, MIN(sizeof(udpstat), req->oldlen));
}
void
if (uh->uh_sum == 0) {
udpstat.udps_nosum++;
- return (0);
+ return 0;
}
+ /* ip_stripoptions() must have been called before we get here */
+ ASSERT((ip->ip_hl << 2) == sizeof(*ip));
+
if ((hwcksum_rx || (ifp->if_flags & IFF_LOOPBACK) ||
(m->m_pkthdr.pkt_flags & PKTF_LOOP)) &&
(m->m_pkthdr.csum_flags & CSUM_DATA_VALID)) {
if (m->m_pkthdr.csum_flags & CSUM_PSEUDO_HDR) {
uh->uh_sum = m->m_pkthdr.csum_rx_val;
} else {
- uint16_t sum = m->m_pkthdr.csum_rx_val;
- uint16_t start = m->m_pkthdr.csum_rx_start;
+ uint32_t sum = m->m_pkthdr.csum_rx_val;
+ uint32_t start = m->m_pkthdr.csum_rx_start;
+ int32_t trailer = (m_pktlen(m) - (off + ulen));
/*
* Perform 1's complement adjustment of octets
* that got included/excluded in the hardware-
* calculated checksum value. Ignore cases
- * where the value includes or excludes the
+ * where the value already includes the entire
* IP header span, as the sum for those octets
- * would already be 0xffff and thus no-op.
+ * would already be 0 by the time we get here;
+ * IP has already performed its header checksum
+ * checks. If we do need to adjust, restore
+ * the original fields in the IP header when
+ * computing the adjustment value. Also take
+ * care of any trailing bytes and subtract out
+ * their partial sum.
*/
+ ASSERT(trailer >= 0);
if ((m->m_pkthdr.csum_flags & CSUM_PARTIAL) &&
- start != 0 && (off - start) != off) {
-#if BYTE_ORDER != BIG_ENDIAN
+ ((start != 0 && start != off) || trailer != 0)) {
+ uint32_t swbytes = (uint32_t)trailer;
+
if (start < off) {
+ ip->ip_len += sizeof(*ip);
+#if BYTE_ORDER != BIG_ENDIAN
HTONS(ip->ip_len);
HTONS(ip->ip_off);
- }
#endif /* BYTE_ORDER != BIG_ENDIAN */
+ }
/* callee folds in sum */
- sum = m_adj_sum16(m, start, off, sum);
-#if BYTE_ORDER != BIG_ENDIAN
+ sum = m_adj_sum16(m, start, off, ulen, sum);
+ if (off > start) {
+ swbytes += (off - start);
+ } else {
+ swbytes += (start - off);
+ }
+
if (start < off) {
+#if BYTE_ORDER != BIG_ENDIAN
NTOHS(ip->ip_off);
NTOHS(ip->ip_len);
- }
#endif /* BYTE_ORDER != BIG_ENDIAN */
+ ip->ip_len -= sizeof(*ip);
+ }
+
+ if (swbytes != 0) {
+ udp_in_cksum_stats(swbytes);
+ }
+ if (trailer != 0) {
+ m_adj(m, -trailer);
+ }
}
/* callee folds in sum */
uint16_t ip_sum;
char b[9];
- bcopy(ipov->ih_x1, b, sizeof (ipov->ih_x1));
- bzero(ipov->ih_x1, sizeof (ipov->ih_x1));
+ bcopy(ipov->ih_x1, b, sizeof(ipov->ih_x1));
+ bzero(ipov->ih_x1, sizeof(ipov->ih_x1));
ip_sum = ipov->ih_len;
ipov->ih_len = uh->uh_ulen;
- uh->uh_sum = in_cksum(m, ulen + sizeof (struct ip));
- bcopy(b, ipov->ih_x1, sizeof (ipov->ih_x1));
+ uh->uh_sum = in_cksum(m, ulen + sizeof(struct ip));
+ bcopy(b, ipov->ih_x1, sizeof(ipov->ih_x1));
ipov->ih_len = ip_sum;
udp_in_cksum_stats(ulen);
if (uh->uh_sum != 0) {
udpstat.udps_badsum++;
IF_UDP_STATINC(ifp, badchksum);
- return (-1);
+ return -1;
+ }
+
+ return 0;
+}
+
+void
+udp_fill_keepalive_offload_frames(ifnet_t ifp,
+ struct ifnet_keepalive_offload_frame *frames_array,
+ u_int32_t frames_array_count, size_t frame_data_offset,
+ u_int32_t *used_frames_count)
+{
+ struct inpcb *inp;
+ inp_gen_t gencnt;
+ u_int32_t frame_index = *used_frames_count;
+
+ if (ifp == NULL || frames_array == NULL ||
+ frames_array_count == 0 ||
+ frame_index >= frames_array_count ||
+ frame_data_offset >= IFNET_KEEPALIVE_OFFLOAD_FRAME_DATA_SIZE) {
+ return;
}
- return (0);
+ lck_rw_lock_shared(udbinfo.ipi_lock);
+ gencnt = udbinfo.ipi_gencnt;
+ LIST_FOREACH(inp, udbinfo.ipi_listhead, inp_list) {
+ struct socket *so;
+ u_int8_t *data;
+ struct ifnet_keepalive_offload_frame *frame;
+ struct mbuf *m = NULL;
+
+ if (frame_index >= frames_array_count) {
+ break;
+ }
+
+ if (inp->inp_gencnt > gencnt ||
+ inp->inp_state == INPCB_STATE_DEAD) {
+ continue;
+ }
+
+ if ((so = inp->inp_socket) == NULL ||
+ (so->so_state & SS_DEFUNCT)) {
+ continue;
+ }
+ /*
+ * check for keepalive offload flag without socket
+ * lock to avoid a deadlock
+ */
+ if (!(inp->inp_flags2 & INP2_KEEPALIVE_OFFLOAD)) {
+ continue;
+ }
+
+ udp_lock(so, 1, 0);
+ if (!(inp->inp_vflag & (INP_IPV4 | INP_IPV6))) {
+ udp_unlock(so, 1, 0);
+ continue;
+ }
+ if ((inp->inp_vflag & INP_IPV4) &&
+ (inp->inp_laddr.s_addr == INADDR_ANY ||
+ inp->inp_faddr.s_addr == INADDR_ANY)) {
+ udp_unlock(so, 1, 0);
+ continue;
+ }
+ if ((inp->inp_vflag & INP_IPV6) &&
+ (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr) ||
+ IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr))) {
+ udp_unlock(so, 1, 0);
+ continue;
+ }
+ if (inp->inp_lport == 0 || inp->inp_fport == 0) {
+ udp_unlock(so, 1, 0);
+ continue;
+ }
+ if (inp->inp_last_outifp == NULL ||
+ inp->inp_last_outifp->if_index != ifp->if_index) {
+ udp_unlock(so, 1, 0);
+ continue;
+ }
+ if ((inp->inp_vflag & INP_IPV4)) {
+ if ((frame_data_offset + sizeof(struct udpiphdr) +
+ inp->inp_keepalive_datalen) >
+ IFNET_KEEPALIVE_OFFLOAD_FRAME_DATA_SIZE) {
+ udp_unlock(so, 1, 0);
+ continue;
+ }
+ if ((sizeof(struct udpiphdr) +
+ inp->inp_keepalive_datalen) > _MHLEN) {
+ udp_unlock(so, 1, 0);
+ continue;
+ }
+ } else {
+ if ((frame_data_offset + sizeof(struct ip6_hdr) +
+ sizeof(struct udphdr) +
+ inp->inp_keepalive_datalen) >
+ IFNET_KEEPALIVE_OFFLOAD_FRAME_DATA_SIZE) {
+ udp_unlock(so, 1, 0);
+ continue;
+ }
+ if ((sizeof(struct ip6_hdr) + sizeof(struct udphdr) +
+ inp->inp_keepalive_datalen) > _MHLEN) {
+ udp_unlock(so, 1, 0);
+ continue;
+ }
+ }
+ MGETHDR(m, M_WAIT, MT_HEADER);
+ if (m == NULL) {
+ udp_unlock(so, 1, 0);
+ continue;
+ }
+ /*
+ * This inp has all the information that is needed to
+ * generate an offload frame.
+ */
+ if (inp->inp_vflag & INP_IPV4) {
+ struct ip *ip;
+ struct udphdr *udp;
+
+ frame = &frames_array[frame_index];
+ frame->length = frame_data_offset +
+ sizeof(struct udpiphdr) +
+ inp->inp_keepalive_datalen;
+ frame->ether_type =
+ IFNET_KEEPALIVE_OFFLOAD_FRAME_ETHERTYPE_IPV4;
+ frame->interval = inp->inp_keepalive_interval;
+ switch (inp->inp_keepalive_type) {
+ case UDP_KEEPALIVE_OFFLOAD_TYPE_AIRPLAY:
+ frame->type =
+ IFNET_KEEPALIVE_OFFLOAD_FRAME_AIRPLAY;
+ break;
+ default:
+ break;
+ }
+ data = mtod(m, u_int8_t *);
+ bzero(data, sizeof(struct udpiphdr));
+ ip = (__typeof__(ip))(void *)data;
+ udp = (__typeof__(udp))(void *) (data +
+ sizeof(struct ip));
+ m->m_len = sizeof(struct udpiphdr);
+ data = data + sizeof(struct udpiphdr);
+ if (inp->inp_keepalive_datalen > 0 &&
+ inp->inp_keepalive_data != NULL) {
+ bcopy(inp->inp_keepalive_data, data,
+ inp->inp_keepalive_datalen);
+ m->m_len += inp->inp_keepalive_datalen;
+ }
+ m->m_pkthdr.len = m->m_len;
+
+ ip->ip_v = IPVERSION;
+ ip->ip_hl = (sizeof(struct ip) >> 2);
+ ip->ip_p = IPPROTO_UDP;
+ ip->ip_len = htons(sizeof(struct udpiphdr) +
+ (u_short)inp->inp_keepalive_datalen);
+ ip->ip_ttl = inp->inp_ip_ttl;
+ ip->ip_tos |= (inp->inp_ip_tos & ~IPTOS_ECN_MASK);
+ ip->ip_src = inp->inp_laddr;
+ ip->ip_dst = inp->inp_faddr;
+ ip->ip_sum = in_cksum_hdr_opt(ip);
+
+ udp->uh_sport = inp->inp_lport;
+ udp->uh_dport = inp->inp_fport;
+ udp->uh_ulen = htons(sizeof(struct udphdr) +
+ (u_short)inp->inp_keepalive_datalen);
+
+ if (!(inp->inp_flags & INP_UDP_NOCKSUM)) {
+ udp->uh_sum = in_pseudo(ip->ip_src.s_addr,
+ ip->ip_dst.s_addr,
+ htons(sizeof(struct udphdr) +
+ (u_short)inp->inp_keepalive_datalen +
+ IPPROTO_UDP));
+ m->m_pkthdr.csum_flags =
+ (CSUM_UDP | CSUM_ZERO_INVERT);
+ m->m_pkthdr.csum_data = offsetof(struct udphdr,
+ uh_sum);
+ }
+ m->m_pkthdr.pkt_proto = IPPROTO_UDP;
+ in_delayed_cksum(m);
+ bcopy(m->m_data, frame->data + frame_data_offset,
+ m->m_len);
+ } else {
+ struct ip6_hdr *ip6;
+ struct udphdr *udp6;
+
+ VERIFY(inp->inp_vflag & INP_IPV6);
+ frame = &frames_array[frame_index];
+ frame->length = frame_data_offset +
+ sizeof(struct ip6_hdr) +
+ sizeof(struct udphdr) +
+ inp->inp_keepalive_datalen;
+ frame->ether_type =
+ IFNET_KEEPALIVE_OFFLOAD_FRAME_ETHERTYPE_IPV6;
+ frame->interval = inp->inp_keepalive_interval;
+ switch (inp->inp_keepalive_type) {
+ case UDP_KEEPALIVE_OFFLOAD_TYPE_AIRPLAY:
+ frame->type =
+ IFNET_KEEPALIVE_OFFLOAD_FRAME_AIRPLAY;
+ break;
+ default:
+ break;
+ }
+ data = mtod(m, u_int8_t *);
+ bzero(data, sizeof(struct ip6_hdr) + sizeof(struct udphdr));
+ ip6 = (__typeof__(ip6))(void *)data;
+ udp6 = (__typeof__(udp6))(void *)(data +
+ sizeof(struct ip6_hdr));
+ m->m_len = sizeof(struct ip6_hdr) +
+ sizeof(struct udphdr);
+ data = data + (sizeof(struct ip6_hdr) +
+ sizeof(struct udphdr));
+ if (inp->inp_keepalive_datalen > 0 &&
+ inp->inp_keepalive_data != NULL) {
+ bcopy(inp->inp_keepalive_data, data,
+ inp->inp_keepalive_datalen);
+ m->m_len += inp->inp_keepalive_datalen;
+ }
+ m->m_pkthdr.len = m->m_len;
+ ip6->ip6_flow = inp->inp_flow & IPV6_FLOWINFO_MASK;
+ ip6->ip6_flow = ip6->ip6_flow & ~IPV6_FLOW_ECN_MASK;
+ ip6->ip6_vfc &= ~IPV6_VERSION_MASK;
+ ip6->ip6_vfc |= IPV6_VERSION;
+ ip6->ip6_nxt = IPPROTO_UDP;
+ ip6->ip6_hlim = ip6_defhlim;
+ ip6->ip6_plen = htons(sizeof(struct udphdr) +
+ (u_short)inp->inp_keepalive_datalen);
+ ip6->ip6_src = inp->in6p_laddr;
+ if (IN6_IS_SCOPE_EMBED(&ip6->ip6_src)) {
+ ip6->ip6_src.s6_addr16[1] = 0;
+ }
+
+ ip6->ip6_dst = inp->in6p_faddr;
+ if (IN6_IS_SCOPE_EMBED(&ip6->ip6_dst)) {
+ ip6->ip6_dst.s6_addr16[1] = 0;
+ }
+
+ udp6->uh_sport = inp->in6p_lport;
+ udp6->uh_dport = inp->in6p_fport;
+ udp6->uh_ulen = htons(sizeof(struct udphdr) +
+ (u_short)inp->inp_keepalive_datalen);
+ if (!(inp->inp_flags & INP_UDP_NOCKSUM)) {
+ udp6->uh_sum = in6_pseudo(&ip6->ip6_src,
+ &ip6->ip6_dst,
+ htonl(sizeof(struct udphdr) +
+ (u_short)inp->inp_keepalive_datalen +
+ IPPROTO_UDP));
+ m->m_pkthdr.csum_flags =
+ (CSUM_UDPIPV6 | CSUM_ZERO_INVERT);
+ m->m_pkthdr.csum_data = offsetof(struct udphdr,
+ uh_sum);
+ }
+ m->m_pkthdr.pkt_proto = IPPROTO_UDP;
+ in6_delayed_cksum(m);
+ bcopy(m->m_data, frame->data + frame_data_offset,
+ m->m_len);
+ }
+ if (m != NULL) {
+ m_freem(m);
+ m = NULL;
+ }
+ frame_index++;
+ udp_unlock(so, 1, 0);
+ }
+ lck_rw_done(udbinfo.ipi_lock);
+ *used_frames_count = frame_index;
}
projects / apple / xnu.git / blobdiff