Gratuitous UDP restyling toward style(9) in 7.x.
This commit is contained in:
parent
3bb153ea78
commit
3329b23659
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=166841
@ -1,6 +1,7 @@
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/*-
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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* The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -31,10 +32,10 @@
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*/
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#ifndef _NETINET_UDP_H_
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#define _NETINET_UDP_H_
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#define _NETINET_UDP_H_
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/*
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* Udp protocol header.
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* UDP protocol header.
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* Per RFC 768, September, 1981.
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*/
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struct udphdr {
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@ -1,6 +1,7 @@
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/*-
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* Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
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* The Regents of the University of California. All rights reserved.
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* The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -79,11 +80,11 @@
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#ifdef FAST_IPSEC
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#include <netipsec/ipsec.h>
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#endif /*FAST_IPSEC*/
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#endif
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#ifdef IPSEC
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#include <netinet6/ipsec.h>
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#endif /*IPSEC*/
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#endif
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#include <machine/in_cksum.h>
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@ -95,33 +96,28 @@
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*/
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/*
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* BSD 4.2 defaulted the udp checksum to be off. Turning off udp
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* checksums removes the only data integrity mechanism for packets and
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* malformed packets that would otherwise be discarded by bad checksums
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* may cause problems (especially for NFS data blocks).
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* BSD 4.2 defaulted the udp checksum to be off. Turning off udp checksums
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* removes the only data integrity mechanism for packets and malformed
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* packets that would otherwise be discarded by bad checksums may cause
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* problems (especially for NFS data blocks).
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*/
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#ifndef COMPAT_42
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static int udpcksum = 1;
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#else
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static int udpcksum = 0;
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#endif
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SYSCTL_INT(_net_inet_udp, UDPCTL_CHECKSUM, checksum, CTLFLAG_RW,
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&udpcksum, 0, "");
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SYSCTL_INT(_net_inet_udp, UDPCTL_CHECKSUM, checksum, CTLFLAG_RW, &udpcksum,
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0, "");
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int log_in_vain = 0;
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SYSCTL_INT(_net_inet_udp, OID_AUTO, log_in_vain, CTLFLAG_RW,
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&log_in_vain, 0, "Log all incoming UDP packets");
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static int blackhole = 0;
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SYSCTL_INT(_net_inet_udp, OID_AUTO, blackhole, CTLFLAG_RW,
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&blackhole, 0, "Do not send port unreachables for refused connects");
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SYSCTL_INT(_net_inet_udp, OID_AUTO, blackhole, CTLFLAG_RW, &blackhole, 0,
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"Do not send port unreachables for refused connects");
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static int strict_mcast_mship = 0;
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SYSCTL_INT(_net_inet_udp, OID_AUTO, strict_mcast_mship, CTLFLAG_RW,
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&strict_mcast_mship, 0, "Only send multicast to member sockets");
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&strict_mcast_mship, 0, "Only send multicast to member sockets");
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struct inpcbhead udb; /* from udp_var.h */
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#define udb6 udb /* for KAME src sync over BSD*'s */
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struct inpcbinfo udbinfo;
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#ifndef UDBHASHSIZE
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@ -129,15 +125,15 @@ struct inpcbinfo udbinfo;
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#endif
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struct udpstat udpstat; /* from udp_var.h */
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SYSCTL_STRUCT(_net_inet_udp, UDPCTL_STATS, stats, CTLFLAG_RW,
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&udpstat, udpstat, "UDP statistics (struct udpstat, netinet/udp_var.h)");
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SYSCTL_STRUCT(_net_inet_udp, UDPCTL_STATS, stats, CTLFLAG_RW, &udpstat,
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udpstat, "UDP statistics (struct udpstat, netinet/udp_var.h)");
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static void udp_append(struct inpcb *last, struct ip *ip, struct mbuf *n,
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int off, struct sockaddr_in *udp_in);
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static void udp_append(struct inpcb *last, struct ip *ip, struct mbuf *n,
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int off, struct sockaddr_in *udp_in);
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static void udp_detach(struct socket *so);
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static int udp_output(struct inpcb *, struct mbuf *, struct sockaddr *,
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struct mbuf *, struct thread *);
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static void udp_detach(struct socket *so);
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static int udp_output(struct inpcb *, struct mbuf *, struct sockaddr *,
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struct mbuf *, struct thread *);
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static void
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udp_zone_change(void *tag)
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@ -163,7 +159,7 @@ udp_init()
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udbinfo.listhead = &udb;
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udbinfo.hashbase = hashinit(UDBHASHSIZE, M_PCB, &udbinfo.hashmask);
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udbinfo.porthashbase = hashinit(UDBHASHSIZE, M_PCB,
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&udbinfo.porthashmask);
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&udbinfo.porthashmask);
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udbinfo.ipi_zone = uma_zcreate("udpcb", sizeof(struct inpcb), NULL,
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NULL, udp_inpcb_init, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
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uma_zone_set_max(udbinfo.ipi_zone, maxsockets);
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@ -172,14 +168,12 @@ udp_init()
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}
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void
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udp_input(m, off)
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register struct mbuf *m;
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int off;
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udp_input(struct mbuf *m, int off)
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{
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int iphlen = off;
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register struct ip *ip;
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register struct udphdr *uh;
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register struct inpcb *inp;
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struct ip *ip;
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struct udphdr *uh;
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struct inpcb *inp;
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int len;
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struct ip save_ip;
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struct sockaddr_in udp_in;
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@ -190,10 +184,9 @@ udp_input(m, off)
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udpstat.udps_ipackets++;
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/*
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* Strip IP options, if any; should skip this,
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* make available to user, and use on returned packets,
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* but we don't yet have a way to check the checksum
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* with options still present.
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* Strip IP options, if any; should skip this, make available to
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* user, and use on returned packets, but we don't yet have a way to
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* check the checksum with options still present.
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*/
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if (iphlen > sizeof (struct ip)) {
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ip_stripoptions(m, (struct mbuf *)0);
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@ -213,13 +206,15 @@ udp_input(m, off)
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}
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uh = (struct udphdr *)((caddr_t)ip + iphlen);
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/* destination port of 0 is illegal, based on RFC768. */
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/*
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* Destination port of 0 is illegal, based on RFC768.
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*/
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if (uh->uh_dport == 0)
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goto badunlocked;
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/*
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* Construct sockaddr format source address.
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* Stuff source address and datagram in user buffer.
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* Construct sockaddr format source address. Stuff source address
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* and datagram in user buffer.
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*/
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bzero(&udp_in, sizeof(udp_in));
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udp_in.sin_len = sizeof(udp_in);
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@ -240,9 +235,10 @@ udp_input(m, off)
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m_adj(m, len - ip->ip_len);
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/* ip->ip_len = len; */
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}
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/*
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* Save a copy of the IP header in case we want restore it
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* for sending an ICMP error message in response.
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* Save a copy of the IP header in case we want restore it for
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* sending an ICMP error message in response.
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*/
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if (!blackhole)
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save_ip = *ip;
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@ -276,17 +272,23 @@ udp_input(m, off)
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udpstat.udps_nosum++;
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#ifdef IPFIREWALL_FORWARD
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/* Grab info from PACKET_TAG_IPFORWARD tag prepended to the chain. */
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/*
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* Grab info from PACKET_TAG_IPFORWARD tag prepended to the chain.
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*/
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fwd_tag = m_tag_find(m, PACKET_TAG_IPFORWARD, NULL);
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if (fwd_tag != NULL) {
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struct sockaddr_in *next_hop;
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/* Do the hack. */
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/*
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* Do the hack.
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*/
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next_hop = (struct sockaddr_in *)(fwd_tag + 1);
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ip->ip_dst = next_hop->sin_addr;
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uh->uh_dport = ntohs(next_hop->sin_port);
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/* Remove the tag from the packet. We don't need it anymore. */
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/*
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* Remove the tag from the packet. We don't need it anymore.
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*/
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m_tag_delete(m, fwd_tag);
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}
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#endif
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@ -296,25 +298,22 @@ udp_input(m, off)
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if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) ||
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in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) {
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struct inpcb *last;
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/*
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* Deliver a multicast or broadcast datagram to *all* sockets
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* for which the local and remote addresses and ports match
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* those of the incoming datagram. This allows more than
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* one process to receive multi/broadcasts on the same port.
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* those of the incoming datagram. This allows more than one
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* process to receive multi/broadcasts on the same port.
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* (This really ought to be done for unicast datagrams as
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* well, but that would cause problems with existing
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* applications that open both address-specific sockets and
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* a wildcard socket listening to the same port -- they would
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* applications that open both address-specific sockets and a
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* wildcard socket listening to the same port -- they would
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* end up receiving duplicates of every unicast datagram.
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* Those applications open the multiple sockets to overcome an
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* inadequacy of the UDP socket interface, but for backwards
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* compatibility we avoid the problem here rather than
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* fixing the interface. Maybe 4.5BSD will remedy this?)
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*/
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/*
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* Locate pcb(s) for datagram.
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* (Algorithm copied from raw_intr().)
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* Those applications open the multiple sockets to overcome
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* an inadequacy of the UDP socket interface, but for
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* backwards compatibility we avoid the problem here rather
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* than fixing the interface. Maybe 4.5BSD will remedy
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* this?)
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*/
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last = NULL;
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LIST_FOREACH(inp, &udb, inp_list) {
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@ -334,7 +333,6 @@ udp_input(m, off)
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inp->inp_fport != uh->uh_sport)
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continue;
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}
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INP_LOCK(inp);
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/*
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* Check multicast packets to make sure they are only
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@ -343,10 +341,12 @@ udp_input(m, off)
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*/
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#define MSHIP(_inp, n) ((_inp)->inp_moptions->imo_membership[(n)])
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#define NMSHIPS(_inp) ((_inp)->inp_moptions->imo_num_memberships)
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INP_LOCK(inp);
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if (strict_mcast_mship && inp->inp_moptions != NULL) {
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int mship, foundmship = 0;
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for (mship = 0; mship < NMSHIPS(inp); mship++) {
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for (mship = 0; mship < NMSHIPS(inp);
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mship++) {
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if (MSHIP(inp, mship)->inm_addr.s_addr
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== ip->ip_dst.s_addr &&
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MSHIP(inp, mship)->inm_ifp
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@ -367,30 +367,29 @@ udp_input(m, off)
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n = m_copy(m, 0, M_COPYALL);
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if (n != NULL)
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udp_append(last, ip, n,
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iphlen +
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sizeof(struct udphdr),
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&udp_in);
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udp_append(last, ip, n, iphlen +
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sizeof(struct udphdr), &udp_in);
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INP_UNLOCK(last);
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}
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last = inp;
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/*
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* Don't look for additional matches if this one does
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* not have either the SO_REUSEPORT or SO_REUSEADDR
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* socket options set. This heuristic avoids searching
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* through all pcbs in the common case of a non-shared
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* port. It assumes that an application will never
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* clear these options after setting them.
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* socket options set. This heuristic avoids
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* searching through all pcbs in the common case of a
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* non-shared port. It assumes that an application
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* will never clear these options after setting them.
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*/
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if ((last->inp_socket->so_options&(SO_REUSEPORT|SO_REUSEADDR)) == 0)
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if ((last->inp_socket->so_options &
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(SO_REUSEPORT|SO_REUSEADDR)) == 0)
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break;
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}
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if (last == NULL) {
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/*
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* No matching pcb found; discard datagram.
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* (No need to send an ICMP Port Unreachable
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* for a broadcast or multicast datgram.)
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* No matching pcb found; discard datagram. (No need
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* to send an ICMP Port Unreachable for a broadcast
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* or multicast datgram.)
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*/
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udpstat.udps_noportbcast++;
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goto badheadlocked;
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@ -401,6 +400,7 @@ udp_input(m, off)
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INP_INFO_RUNLOCK(&udbinfo);
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return;
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}
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/*
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* Locate pcb for datagram.
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*/
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@ -431,8 +431,11 @@ udp_input(m, off)
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INP_INFO_RUNLOCK(&udbinfo);
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return;
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}
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/*
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* Check the minimum TTL for socket.
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*/
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INP_LOCK(inp);
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/* Check the minimum TTL for socket. */
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if (inp->inp_ip_minttl && inp->inp_ip_minttl > ip->ip_ttl)
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goto badheadlocked;
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udp_append(inp, ip, m, iphlen + sizeof(struct udphdr), &udp_in);
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@ -446,7 +449,6 @@ udp_input(m, off)
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INP_INFO_RUNLOCK(&udbinfo);
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badunlocked:
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m_freem(m);
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return;
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}
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/*
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@ -457,12 +459,8 @@ udp_input(m, off)
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* into the socket code.
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*/
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static void
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udp_append(inp, ip, n, off, udp_in)
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struct inpcb *inp;
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struct ip *ip;
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struct mbuf *n;
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int off;
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struct sockaddr_in *udp_in;
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udp_append(struct inpcb *inp, struct ip *ip, struct mbuf *n, int off,
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struct sockaddr_in *udp_in)
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{
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struct sockaddr *append_sa;
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struct socket *so;
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@ -478,7 +476,7 @@ udp_append(inp, ip, n, off, udp_in)
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if (ipsec4_in_reject(n, inp)) {
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#ifdef IPSEC
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ipsecstat.in_polvio++;
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#endif /*IPSEC*/
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#endif
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m_freem(n);
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return;
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}
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@ -501,7 +499,7 @@ udp_append(inp, ip, n, off, udp_in)
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inp->inp_flags = savedflags;
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} else
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#endif
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ip_savecontrol(inp, &opts, ip, n);
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ip_savecontrol(inp, &opts, ip, n);
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}
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#ifdef INET6
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if (inp->inp_vflag & INP_IPV6) {
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@ -512,7 +510,7 @@ udp_append(inp, ip, n, off, udp_in)
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append_sa = (struct sockaddr *)&udp_in6;
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} else
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#endif
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append_sa = (struct sockaddr *)udp_in;
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append_sa = (struct sockaddr *)udp_in;
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m_adj(n, off);
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so = inp->inp_socket;
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@ -528,25 +526,21 @@ udp_append(inp, ip, n, off, udp_in)
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}
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/*
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* Notify a udp user of an asynchronous error;
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* just wake up so that he can collect error status.
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* Notify a udp user of an asynchronous error; just wake up so that they can
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* collect error status.
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*/
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struct inpcb *
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udp_notify(inp, errno)
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register struct inpcb *inp;
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int errno;
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udp_notify(struct inpcb *inp, int errno)
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{
|
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|
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inp->inp_socket->so_error = errno;
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sorwakeup(inp->inp_socket);
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sowwakeup(inp->inp_socket);
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return inp;
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return (inp);
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}
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void
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udp_ctlinput(cmd, sa, vip)
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int cmd;
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struct sockaddr *sa;
|
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void *vip;
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udp_ctlinput(int cmd, struct sockaddr *sa, void *vip)
|
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{
|
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struct ip *ip = vip;
|
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struct udphdr *uh;
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@ -563,10 +557,12 @@ udp_ctlinput(cmd, sa, vip)
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*/
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if (PRC_IS_REDIRECT(cmd))
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return;
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|
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/*
|
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* Hostdead is ugly because it goes linearly through all PCBs.
|
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* XXX: We never get this from ICMP, otherwise it makes an
|
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* excellent DoS attack on machines with many connections.
|
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*
|
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* XXX: We never get this from ICMP, otherwise it makes an excellent
|
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* DoS attack on machines with many connections.
|
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*/
|
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if (cmd == PRC_HOSTDEAD)
|
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ip = 0;
|
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@ -605,11 +601,11 @@ udp_pcblist(SYSCTL_HANDLER_ARGS)
|
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n = udbinfo.ipi_count;
|
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req->oldidx = 2 * (sizeof xig)
|
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+ (n + n/8) * sizeof(struct xinpcb);
|
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return 0;
|
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return (0);
|
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}
|
||||
|
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if (req->newptr != 0)
|
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return EPERM;
|
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return (EPERM);
|
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|
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/*
|
||||
* OK, now we're committed to doing something.
|
||||
@ -630,11 +626,11 @@ udp_pcblist(SYSCTL_HANDLER_ARGS)
|
||||
xig.xig_sogen = so_gencnt;
|
||||
error = SYSCTL_OUT(req, &xig, sizeof xig);
|
||||
if (error)
|
||||
return error;
|
||||
return (error);
|
||||
|
||||
inp_list = malloc(n * sizeof *inp_list, M_TEMP, M_WAITOK);
|
||||
if (inp_list == 0)
|
||||
return ENOMEM;
|
||||
return (ENOMEM);
|
||||
|
||||
INP_INFO_RLOCK(&udbinfo);
|
||||
for (inp = LIST_FIRST(udbinfo.listhead), i = 0; inp && i < n;
|
||||
@ -664,15 +660,14 @@ udp_pcblist(SYSCTL_HANDLER_ARGS)
|
||||
INP_UNLOCK(inp);
|
||||
error = SYSCTL_OUT(req, &xi, sizeof xi);
|
||||
} else
|
||||
INP_UNLOCK(inp);
|
||||
INP_UNLOCK(inp);
|
||||
}
|
||||
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.
|
||||
* 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.
|
||||
*/
|
||||
INP_INFO_RLOCK(&udbinfo);
|
||||
xig.xig_gen = udbinfo.ipi_gencnt;
|
||||
@ -682,11 +677,11 @@ udp_pcblist(SYSCTL_HANDLER_ARGS)
|
||||
error = SYSCTL_OUT(req, &xig, sizeof xig);
|
||||
}
|
||||
free(inp_list, M_TEMP);
|
||||
return error;
|
||||
return (error);
|
||||
}
|
||||
|
||||
SYSCTL_PROC(_net_inet_udp, UDPCTL_PCBLIST, pcblist, CTLFLAG_RD, 0, 0,
|
||||
udp_pcblist, "S,xinpcb", "List of active UDP sockets");
|
||||
udp_pcblist, "S,xinpcb", "List of active UDP sockets");
|
||||
|
||||
static int
|
||||
udp_getcred(SYSCTL_HANDLER_ARGS)
|
||||
@ -726,15 +721,11 @@ SYSCTL_PROC(_net_inet_udp, OID_AUTO, getcred,
|
||||
udp_getcred, "S,xucred", "Get the xucred of a UDP connection");
|
||||
|
||||
static int
|
||||
udp_output(inp, m, addr, control, td)
|
||||
register struct inpcb *inp;
|
||||
struct mbuf *m;
|
||||
struct sockaddr *addr;
|
||||
struct mbuf *control;
|
||||
struct thread *td;
|
||||
udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
|
||||
struct mbuf *control, struct thread *td)
|
||||
{
|
||||
register struct udpiphdr *ui;
|
||||
register int len = m->m_pkthdr.len;
|
||||
struct udpiphdr *ui;
|
||||
int len = m->m_pkthdr.len;
|
||||
struct in_addr faddr, laddr;
|
||||
struct cmsghdr *cm;
|
||||
struct sockaddr_in *sin, src;
|
||||
@ -753,19 +744,19 @@ udp_output(inp, m, addr, control, td)
|
||||
if (control)
|
||||
m_freem(control);
|
||||
m_freem(m);
|
||||
return EMSGSIZE;
|
||||
return (EMSGSIZE);
|
||||
}
|
||||
|
||||
src.sin_addr.s_addr = INADDR_ANY;
|
||||
if (control != NULL) {
|
||||
/*
|
||||
* XXX: Currently, we assume all the optional information
|
||||
* is stored in a single mbuf.
|
||||
* XXX: Currently, we assume all the optional information is
|
||||
* stored in a single mbuf.
|
||||
*/
|
||||
if (control->m_next) {
|
||||
m_freem(control);
|
||||
m_freem(m);
|
||||
return EINVAL;
|
||||
return (EINVAL);
|
||||
}
|
||||
for (; control->m_len > 0;
|
||||
control->m_data += CMSG_ALIGN(cm->cmsg_len),
|
||||
@ -803,11 +794,10 @@ udp_output(inp, m, addr, control, td)
|
||||
}
|
||||
if (error) {
|
||||
m_freem(m);
|
||||
return error;
|
||||
return (error);
|
||||
}
|
||||
|
||||
if (src.sin_addr.s_addr != INADDR_ANY ||
|
||||
addr != NULL) {
|
||||
if (src.sin_addr.s_addr != INADDR_ANY || addr != NULL) {
|
||||
INP_INFO_WLOCK(&udbinfo);
|
||||
unlock_udbinfo = 1;
|
||||
} else
|
||||
@ -834,7 +824,8 @@ udp_output(inp, m, addr, control, td)
|
||||
if (addr) {
|
||||
sin = (struct sockaddr_in *)addr;
|
||||
if (jailed(td->td_ucred))
|
||||
prison_remote_ip(td->td_ucred, 0, &sin->sin_addr.s_addr);
|
||||
prison_remote_ip(td->td_ucred, 0,
|
||||
&sin->sin_addr.s_addr);
|
||||
if (inp->inp_faddr.s_addr != INADDR_ANY) {
|
||||
error = EISCONN;
|
||||
goto release;
|
||||
@ -884,8 +875,8 @@ udp_output(inp, m, addr, control, td)
|
||||
m->m_pkthdr.len -= max_linkhdr;
|
||||
|
||||
/*
|
||||
* Fill in mbuf with extended UDP header
|
||||
* and addresses and length put into network format.
|
||||
* Fill in mbuf with extended UDP header and addresses and length put
|
||||
* into network format.
|
||||
*/
|
||||
ui = mtod(m, struct udpiphdr *);
|
||||
bzero(ui->ui_x1, sizeof(ui->ui_x1)); /* XXX still needed? */
|
||||
@ -901,6 +892,7 @@ udp_output(inp, m, addr, control, td)
|
||||
*/
|
||||
if (inp->inp_flags & INP_DONTFRAG) {
|
||||
struct ip *ip;
|
||||
|
||||
ip = (struct ip *)&ui->ui_i;
|
||||
ip->ip_off |= IP_DF;
|
||||
}
|
||||
@ -923,9 +915,8 @@ udp_output(inp, m, addr, control, td)
|
||||
htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));
|
||||
m->m_pkthdr.csum_flags = CSUM_UDP;
|
||||
m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
|
||||
} else {
|
||||
} 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 */
|
||||
@ -989,12 +980,12 @@ udp_attach(struct socket *so, int proto, struct thread *td)
|
||||
KASSERT(inp == NULL, ("udp_attach: inp != NULL"));
|
||||
error = soreserve(so, udp_sendspace, udp_recvspace);
|
||||
if (error)
|
||||
return error;
|
||||
return (error);
|
||||
INP_INFO_WLOCK(&udbinfo);
|
||||
error = in_pcballoc(so, &udbinfo);
|
||||
if (error) {
|
||||
INP_INFO_WUNLOCK(&udbinfo);
|
||||
return error;
|
||||
return (error);
|
||||
}
|
||||
|
||||
inp = (struct inpcb *)so->so_pcb;
|
||||
@ -1002,7 +993,7 @@ udp_attach(struct socket *so, int proto, struct thread *td)
|
||||
inp->inp_vflag |= INP_IPV4;
|
||||
inp->inp_ip_ttl = ip_defttl;
|
||||
INP_UNLOCK(inp);
|
||||
return 0;
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
@ -1018,7 +1009,7 @@ udp_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
|
||||
error = in_pcbbind(inp, nam, td->td_ucred);
|
||||
INP_UNLOCK(inp);
|
||||
INP_INFO_WUNLOCK(&udbinfo);
|
||||
return error;
|
||||
return (error);
|
||||
}
|
||||
|
||||
static void
|
||||
@ -1053,7 +1044,7 @@ udp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
|
||||
if (inp->inp_faddr.s_addr != INADDR_ANY) {
|
||||
INP_UNLOCK(inp);
|
||||
INP_INFO_WUNLOCK(&udbinfo);
|
||||
return EISCONN;
|
||||
return (EISCONN);
|
||||
}
|
||||
sin = (struct sockaddr_in *)nam;
|
||||
if (jailed(td->td_ucred))
|
||||
@ -1063,7 +1054,7 @@ udp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
|
||||
soisconnected(so);
|
||||
INP_UNLOCK(inp);
|
||||
INP_INFO_WUNLOCK(&udbinfo);
|
||||
return error;
|
||||
return (error);
|
||||
}
|
||||
|
||||
static void
|
||||
@ -1094,7 +1085,7 @@ udp_disconnect(struct socket *so)
|
||||
if (inp->inp_faddr.s_addr == INADDR_ANY) {
|
||||
INP_INFO_WUNLOCK(&udbinfo);
|
||||
INP_UNLOCK(inp);
|
||||
return ENOTCONN;
|
||||
return (ENOTCONN);
|
||||
}
|
||||
|
||||
in_pcbdisconnect(inp);
|
||||
@ -1104,18 +1095,18 @@ udp_disconnect(struct socket *so)
|
||||
SOCK_UNLOCK(so);
|
||||
INP_UNLOCK(inp);
|
||||
INP_INFO_WUNLOCK(&udbinfo);
|
||||
return 0;
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
udp_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
|
||||
struct mbuf *control, struct thread *td)
|
||||
struct mbuf *control, struct thread *td)
|
||||
{
|
||||
struct inpcb *inp;
|
||||
|
||||
inp = sotoinpcb(so);
|
||||
KASSERT(inp != NULL, ("udp_send: inp == NULL"));
|
||||
return udp_output(inp, m, addr, control, td);
|
||||
return (udp_output(inp, m, addr, control, td));
|
||||
}
|
||||
|
||||
int
|
||||
@ -1128,27 +1119,29 @@ udp_shutdown(struct socket *so)
|
||||
INP_LOCK(inp);
|
||||
socantsendmore(so);
|
||||
INP_UNLOCK(inp);
|
||||
return 0;
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* This is the wrapper function for in_setsockaddr. We just pass down
|
||||
* the pcbinfo for in_setsockaddr to lock. We don't want to do the locking
|
||||
* here because in_setsockaddr will call malloc and might block.
|
||||
* This is the wrapper function for in_setsockaddr. We just pass down the
|
||||
* pcbinfo for in_setsockaddr() to lock. We don't want to do the locking
|
||||
* here because in_setsockaddr() will call malloc and might block.
|
||||
*/
|
||||
static int
|
||||
udp_sockaddr(struct socket *so, struct sockaddr **nam)
|
||||
{
|
||||
|
||||
return (in_setsockaddr(so, nam, &udbinfo));
|
||||
}
|
||||
|
||||
/*
|
||||
* This is the wrapper function for in_setpeeraddr. We just pass down
|
||||
* the pcbinfo for in_setpeeraddr to lock.
|
||||
* This is the wrapper function for in_setpeeraddr(). We just pass down the
|
||||
* pcbinfo for in_setpeeraddr() to lock.
|
||||
*/
|
||||
static int
|
||||
udp_peeraddr(struct socket *so, struct sockaddr **nam)
|
||||
{
|
||||
|
||||
return (in_setpeeraddr(so, nam, &udbinfo));
|
||||
}
|
||||
|
||||
|
@ -1,6 +1,7 @@
|
||||
/*-
|
||||
* Copyright (c) 1982, 1986, 1989, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
* The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
@ -31,14 +32,14 @@
|
||||
*/
|
||||
|
||||
#ifndef _NETINET_UDP_VAR_H_
|
||||
#define _NETINET_UDP_VAR_H_
|
||||
#define _NETINET_UDP_VAR_H_
|
||||
|
||||
/*
|
||||
* UDP kernel structures and variables.
|
||||
*/
|
||||
struct udpiphdr {
|
||||
struct ipovly ui_i; /* overlaid ip structure */
|
||||
struct udphdr ui_u; /* udp header */
|
||||
struct udpiphdr {
|
||||
struct ipovly ui_i; /* overlaid ip structure */
|
||||
struct udphdr ui_u; /* udp header */
|
||||
};
|
||||
#define ui_x1 ui_i.ih_x1
|
||||
#define ui_pr ui_i.ih_pr
|
||||
@ -50,7 +51,7 @@ struct udpiphdr {
|
||||
#define ui_ulen ui_u.uh_ulen
|
||||
#define ui_sum ui_u.uh_sum
|
||||
|
||||
struct udpstat {
|
||||
struct udpstat {
|
||||
/* input statistics: */
|
||||
u_long udps_ipackets; /* total input packets */
|
||||
u_long udps_hdrops; /* packet shorter than header */
|
||||
@ -70,42 +71,40 @@ struct udpstat {
|
||||
};
|
||||
|
||||
/*
|
||||
* Names for UDP sysctl objects
|
||||
* Names for UDP sysctl objects.
|
||||
*/
|
||||
#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
|
||||
#define UDPCTL_STATS 2 /* statistics (read-only) */
|
||||
#define UDPCTL_STATS 2 /* statistics (read-only) */
|
||||
#define UDPCTL_MAXDGRAM 3 /* max datagram size */
|
||||
#define UDPCTL_RECVSPACE 4 /* default receive buffer space */
|
||||
#define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
|
||||
#define UDPCTL_MAXID 6
|
||||
#define UDPCTL_MAXID 6
|
||||
|
||||
#define UDPCTL_NAMES { \
|
||||
{ 0, 0 }, \
|
||||
{ "checksum", CTLTYPE_INT }, \
|
||||
{ "stats", CTLTYPE_STRUCT }, \
|
||||
{ "maxdgram", CTLTYPE_INT }, \
|
||||
{ "recvspace", CTLTYPE_INT }, \
|
||||
{ "pcblist", CTLTYPE_STRUCT }, \
|
||||
#define UDPCTL_NAMES { \
|
||||
{ 0, 0 }, \
|
||||
{ "checksum", CTLTYPE_INT }, \
|
||||
{ "stats", CTLTYPE_STRUCT }, \
|
||||
{ "maxdgram", CTLTYPE_INT }, \
|
||||
{ "recvspace", CTLTYPE_INT }, \
|
||||
{ "pcblist", CTLTYPE_STRUCT }, \
|
||||
}
|
||||
|
||||
#ifdef _KERNEL
|
||||
SYSCTL_DECL(_net_inet_udp);
|
||||
|
||||
extern struct pr_usrreqs udp_usrreqs;
|
||||
extern struct inpcbhead udb;
|
||||
extern struct inpcbinfo udbinfo;
|
||||
extern u_long udp_sendspace;
|
||||
extern u_long udp_recvspace;
|
||||
extern struct udpstat udpstat;
|
||||
extern int log_in_vain;
|
||||
extern struct pr_usrreqs udp_usrreqs;
|
||||
extern struct inpcbhead udb;
|
||||
extern struct inpcbinfo udbinfo;
|
||||
extern u_long udp_sendspace;
|
||||
extern u_long udp_recvspace;
|
||||
extern struct udpstat udpstat;
|
||||
extern int log_in_vain;
|
||||
|
||||
void udp_ctlinput(int, struct sockaddr *, void *);
|
||||
void udp_init(void);
|
||||
void udp_input(struct mbuf *, int);
|
||||
|
||||
struct inpcb *
|
||||
udp_notify(struct inpcb *inp, int errno);
|
||||
int udp_shutdown(struct socket *so);
|
||||
void udp_ctlinput(int, struct sockaddr *, void *);
|
||||
void udp_init(void);
|
||||
void udp_input(struct mbuf *, int);
|
||||
struct inpcb *udp_notify(struct inpcb *inp, int errno);
|
||||
int udp_shutdown(struct socket *so);
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
Loading…
Reference in New Issue
Block a user