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Add support for UDP-Lite protocol (RFC 3828) to IPv4 and IPv6 stacks.

Browse Source 
Tested with vlc and a test suite [1].

[1] http://www.erg.abdn.ac.uk/~gerrit/udp-lite/files/udplite_linux.tar.gz

Reviewed by:	jhb, glebius, adrian
This commit is contained in:
Kevin Lo 2014-04-07 01:53:03 +00:00
parent 212168f867
commit e06e816f67
13 changed files with 440 additions and 104 deletions
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5
lib/libc/net/getaddrinfo.c
View File

@ -170,12 +170,14 @@ static const struct explore explore[] = {
{ PF_INET6, SOCK_STREAM, IPPROTO_TCP, 0x07 },
{ PF_INET6, SOCK_STREAM, IPPROTO_SCTP, 0x03 },
{ PF_INET6, SOCK_SEQPACKET, IPPROTO_SCTP, 0x07 },
{ PF_INET6, SOCK_DGRAM, IPPROTO_UDPLITE, 0x03 },
{ PF_INET6, SOCK_RAW, ANY, 0x05 },
#endif
{ PF_INET, SOCK_DGRAM, IPPROTO_UDP, 0x07 },
{ PF_INET, SOCK_STREAM, IPPROTO_TCP, 0x07 },
{ PF_INET, SOCK_STREAM, IPPROTO_SCTP, 0x03 },
{ PF_INET, SOCK_SEQPACKET, IPPROTO_SCTP, 0x07 },
{ PF_INET, SOCK_DGRAM, IPPROTO_UDPLITE, 0x03 },
{ PF_INET, SOCK_RAW, ANY, 0x05 },
{ -1, 0, 0, 0 },
};
@ -1477,6 +1479,9 @@ get_port(struct addrinfo *ai, const char *servname, int matchonly)
case IPPROTO_SCTP:
proto = "sctp";
break;
case IPPROTO_UDPLITE:
proto = "udplite";
break;
default:
proto = NULL;
break;

1
sys/netinet/in.c
View File

@ -859,6 +859,7 @@ in_ifdetach(struct ifnet *ifp)
in_pcbpurgeif0(&V_ripcbinfo, ifp);
in_pcbpurgeif0(&V_udbinfo, ifp);
in_pcbpurgeif0(&V_ulitecbinfo, ifp);
in_purgemaddrs(ifp);
}

1
sys/netinet/in.h
View File

@ -237,6 +237,7 @@ __END_DECLS
#define IPPROTO_IPCOMP 108 /* payload compression (IPComp) */
#define IPPROTO_SCTP 132 /* SCTP */
#define IPPROTO_MH 135 /* IPv6 Mobility Header */
#define IPPROTO_UDPLITE 136 /* UDP-Lite */
#define IPPROTO_HIP 139 /* IP6 Host Identity Protocol */
#define IPPROTO_SHIM6 140 /* IP6 Shim6 Protocol */
/* 101-254: Partly Unassigned */

9
sys/netinet/in_pcb.c
View File

@ -389,13 +389,14 @@ in_pcb_lport(struct inpcb *inp, struct in_addr *laddrp, u_short *lportp,
lastport = &pcbinfo->ipi_lastport;
}
/*
* For UDP, use random port allocation as long as the user
* For UDP(-Lite), use random port allocation as long as the user
* allows it. For TCP (and as of yet unknown) connections,
* use random port allocation only if the user allows it AND
* ipport_tick() allows it.
*/
if (V_ipport_randomized &&
(!V_ipport_stoprandom || pcbinfo == &V_udbinfo))
(!V_ipport_stoprandom || pcbinfo == &V_udbinfo ||
pcbinfo == &V_ulitecbinfo))
dorandom = 1;
else
dorandom = 0;
@ -405,8 +406,8 @@ in_pcb_lport(struct inpcb *inp, struct in_addr *laddrp, u_short *lportp,
*/
if (first == last)
dorandom = 0;
/* Make sure to not include UDP packets in the count. */
if (pcbinfo != &V_udbinfo)
/* Make sure to not include UDP(-Lite) packets in the count. */
if (pcbinfo != &V_udbinfo || pcbinfo != &V_ulitecbinfo)
V_ipport_tcpallocs++;
/*
* Instead of having two loops further down counting up or down

14
sys/netinet/in_proto.c
View File

@ -183,6 +183,20 @@ struct protosw inetsw[] = {
.pr_usrreqs = &sctp_usrreqs
},
#endif /* SCTP */
{
.pr_type = SOCK_DGRAM,
.pr_domain = &inetdomain,
.pr_protocol = IPPROTO_UDPLITE,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = udp_input,
.pr_ctlinput = udplite_ctlinput,
.pr_ctloutput = udp_ctloutput,
.pr_init = udplite_init,
#ifdef VIMAGE
.pr_destroy = udplite_destroy,
#endif
.pr_usrreqs = &udp_usrreqs
},
{
.pr_type = SOCK_RAW,
.pr_domain = &inetdomain,

264
sys/netinet/udp_usrreq.c
View File

@ -3,6 +3,7 @@
* The Regents of the University of California.
* Copyright (c) 2008 Robert N. M. Watson
* Copyright (c) 2010-2011 Juniper Networks, Inc.
* Copyright (c) 2014 Kevin Lo
* All rights reserved.
*
* Portions of this software were developed by Robert N. M. Watson under
@ -87,6 +88,7 @@ __FBSDID("$FreeBSD$");
#endif
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/udplite.h>
#ifdef IPSEC
#include <netipsec/ipsec.h>
@ -98,8 +100,9 @@ __FBSDID("$FreeBSD$");
#include <security/mac/mac_framework.h>
/*
* UDP protocol implementation.
* UDP and UDP-Lite protocols implementation.
* Per RFC 768, August, 1980.
* Per RFC 3828, July, 2004.
*/
/*
@ -139,6 +142,8 @@ SYSCTL_ULONG(_net_inet_udp, UDPCTL_RECVSPACE, recvspace, CTLFLAG_RW,
VNET_DEFINE(struct inpcbhead, udb); /* from udp_var.h */
VNET_DEFINE(struct inpcbinfo, udbinfo);
VNET_DEFINE(struct inpcbhead, ulitecb);
VNET_DEFINE(struct inpcbinfo, ulitecbinfo);
static VNET_DEFINE(uma_zone_t, udpcb_zone);
#define V_udpcb_zone VNET(udpcb_zone)
@ -187,6 +192,16 @@ udp_inpcb_init(void *mem, int size, int flags)
return (0);
}
static int
udplite_inpcb_init(void *mem, int size, int flags)
{
struct inpcb *inp;
inp = mem;
INP_LOCK_INIT(inp, "inp", "udpliteinp");
return (0);
}
void
udp_init(void)
{
@ -202,6 +217,15 @@ udp_init(void)
EVENTHANDLER_PRI_ANY);
}
void
udplite_init(void)
{
in_pcbinfo_init(&V_ulitecbinfo, "udplite", &V_ulitecb, UDBHASHSIZE,
UDBHASHSIZE, "udplite_inpcb", udplite_inpcb_init, NULL,
UMA_ZONE_NOFREE, IPI_HASHFIELDS_2TUPLE);
}
/*
* Kernel module interface for updating udpstat. The argument is an index
* into udpstat treated as an array of u_long. While this encodes the
@ -243,6 +267,13 @@ udp_destroy(void)
in_pcbinfo_destroy(&V_udbinfo);
uma_zdestroy(V_udpcb_zone);
}
void
udplite_destroy(void)
{
in_pcbinfo_destroy(&V_ulitecbinfo);
}
#endif
#ifdef INET
@ -346,10 +377,14 @@ udp_input(struct mbuf *m, int off)
struct ifnet *ifp;
struct inpcb *inp;
uint16_t len, ip_len;
struct inpcbinfo *pcbinfo;
struct ip save_ip;
struct sockaddr_in udp_in;
struct m_tag *fwd_tag;
int cscov_partial;
uint8_t pr;
iphlen = off;
ifp = m->m_pkthdr.rcvif;
UDPSTAT_INC(udps_ipackets);
@ -375,6 +410,8 @@ udp_input(struct mbuf *m, int off)
ip = mtod(m, struct ip *);
}
uh = (struct udphdr *)((caddr_t)ip + iphlen);
pr = ip->ip_p;
cscov_partial = (pr == IPPROTO_UDPLITE) ? 1 : 0;
/*
* Destination port of 0 is illegal, based on RFC768.
@ -398,12 +435,18 @@ udp_input(struct mbuf *m, int off)
*/
len = ntohs((u_short)uh->uh_ulen);
ip_len = ntohs(ip->ip_len) - iphlen;
if (pr == IPPROTO_UDPLITE && len == 0) {
/* Zero means checksum over the complete packet. */
len = ip_len;
cscov_partial = 0;
}
if (ip_len != len) {
if (len > ip_len || len < sizeof(struct udphdr)) {
UDPSTAT_INC(udps_badlen);
goto badunlocked;
}
m_adj(m, len - ip_len);
if (pr == IPPROTO_UDP)
m_adj(m, len - ip_len);
}
/*
@ -421,20 +464,22 @@ udp_input(struct mbuf *m, int off)
if (uh->uh_sum) {
u_short uh_sum;
if (m->m_pkthdr.csum_flags & CSUM_DATA_VALID) {
if ((m->m_pkthdr.csum_flags & CSUM_DATA_VALID) &&
!cscov_partial) {
if (m->m_pkthdr.csum_flags & CSUM_PSEUDO_HDR)
uh_sum = m->m_pkthdr.csum_data;
else
uh_sum = in_pseudo(ip->ip_src.s_addr,
ip->ip_dst.s_addr, htonl((u_short)len +
m->m_pkthdr.csum_data + IPPROTO_UDP));
m->m_pkthdr.csum_data + pr));
uh_sum ^= 0xffff;
} else {
char b[9];
bcopy(((struct ipovly *)ip)->ih_x1, b, 9);
bzero(((struct ipovly *)ip)->ih_x1, 9);
((struct ipovly *)ip)->ih_len = uh->uh_ulen;
((struct ipovly *)ip)->ih_len = (pr == IPPROTO_UDP) ?
uh->uh_ulen : htons(ip_len);
uh_sum = in_cksum(m, len + sizeof (struct ip));
bcopy(b, ((struct ipovly *)ip)->ih_x1, 9);
}
@ -446,14 +491,17 @@ udp_input(struct mbuf *m, int off)
} else
UDPSTAT_INC(udps_nosum);
pcbinfo = get_inpcbinfo(pr);
if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) ||
in_broadcast(ip->ip_dst, ifp)) {
struct inpcb *last;
struct inpcbhead *pcblist;
struct ip_moptions *imo;
INP_INFO_RLOCK(&V_udbinfo);
INP_INFO_RLOCK(pcbinfo);
pcblist = get_pcblist(pr);
last = NULL;
LIST_FOREACH(inp, &V_udb, inp_list) {
LIST_FOREACH(inp, pcblist, inp_list) {
if (inp->inp_lport != uh->uh_dport)
continue;
#ifdef INET6
@ -539,12 +587,12 @@ udp_input(struct mbuf *m, int off)
UDPSTAT_INC(udps_noportbcast);
if (inp)
INP_RUNLOCK(inp);
INP_INFO_RUNLOCK(&V_udbinfo);
INP_INFO_RUNLOCK(pcbinfo);
goto badunlocked;
}
udp_append(last, ip, m, iphlen, &udp_in);
INP_RUNLOCK(last);
INP_INFO_RUNLOCK(&V_udbinfo);
INP_INFO_RUNLOCK(pcbinfo);
return;
}
@ -565,7 +613,7 @@ udp_input(struct mbuf *m, int off)
* Transparently forwarded. Pretend to be the destination.
* Already got one like this?
*/
inp = in_pcblookup_mbuf(&V_udbinfo, ip->ip_src, uh->uh_sport,
inp = in_pcblookup_mbuf(pcbinfo, ip->ip_src, uh->uh_sport,
ip->ip_dst, uh->uh_dport, INPLOOKUP_RLOCKPCB, ifp, m);
if (!inp) {
/*
@ -573,7 +621,7 @@ udp_input(struct mbuf *m, int off)
* Because we've rewritten the destination address,
* any hardware-generated hash is ignored.
*/
inp = in_pcblookup(&V_udbinfo, ip->ip_src,
inp = in_pcblookup(pcbinfo, ip->ip_src,
uh->uh_sport, next_hop->sin_addr,
next_hop->sin_port ? htons(next_hop->sin_port) :
uh->uh_dport, INPLOOKUP_WILDCARD |
@ -583,7 +631,7 @@ udp_input(struct mbuf *m, int off)
m_tag_delete(m, fwd_tag);
m->m_flags &= ~M_IP_NEXTHOP;
} else
inp = in_pcblookup_mbuf(&V_udbinfo, ip->ip_src, uh->uh_sport,
inp = in_pcblookup_mbuf(pcbinfo, ip->ip_src, uh->uh_sport,
ip->ip_dst, uh->uh_dport, INPLOOKUP_WILDCARD |
INPLOOKUP_RLOCKPCB, ifp, m);
if (inp == NULL) {
@ -619,6 +667,16 @@ udp_input(struct mbuf *m, int off)
m_freem(m);
return;
}
if (cscov_partial) {
struct udpcb *up;
up = intoudpcb(inp);
if (up->u_rxcslen > len) {
INP_RUNLOCK(inp);
m_freem(m);
return;
}
}
UDP_PROBE(receive, NULL, inp, ip, inp, uh);
udp_append(inp, ip, m, iphlen, &udp_in);
@ -653,8 +711,9 @@ udp_notify(struct inpcb *inp, int errno)
}
#ifdef INET
void
udp_ctlinput(int cmd, struct sockaddr *sa, void *vip)
static void
udp_common_ctlinput(int cmd, struct sockaddr *sa, void *vip,
struct inpcbinfo *pcbinfo)
{
struct ip *ip = vip;
struct udphdr *uh;
@ -683,7 +742,7 @@ udp_ctlinput(int cmd, struct sockaddr *sa, void *vip)
return;
if (ip != NULL) {
uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
inp = in_pcblookup(&V_udbinfo, faddr, uh->uh_dport,
inp = in_pcblookup(pcbinfo, faddr, uh->uh_dport,
ip->ip_src, uh->uh_sport, INPLOOKUP_RLOCKPCB, NULL);
if (inp != NULL) {
INP_RLOCK_ASSERT(inp);
@ -693,9 +752,22 @@ udp_ctlinput(int cmd, struct sockaddr *sa, void *vip)
INP_RUNLOCK(inp);
}
} else
in_pcbnotifyall(&V_udbinfo, faddr, inetctlerrmap[cmd],
in_pcbnotifyall(pcbinfo, faddr, inetctlerrmap[cmd],
udp_notify);
}
void
udp_ctlinput(int cmd, struct sockaddr *sa, void *vip)
{
return (udp_common_ctlinput(cmd, sa, vip, &V_udbinfo));
}
void
udplite_ctlinput(int cmd, struct sockaddr *sa, void *vip)
{
return (udp_common_ctlinput(cmd, sa, vip, &V_ulitecbinfo));
}
#endif /* INET */
static int
@ -851,16 +923,16 @@ SYSCTL_PROC(_net_inet_udp, OID_AUTO, getcred,
int
udp_ctloutput(struct socket *so, struct sockopt *sopt)
{
int error = 0, optval;
struct inpcb *inp;
#ifdef IPSEC_NAT_T
struct udpcb *up;
#endif
int isudplite, error, optval;
error = 0;
isudplite = (so->so_proto->pr_protocol == IPPROTO_UDPLITE) ? 1 : 0;
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("%s: inp == NULL", __func__));
INP_WLOCK(inp);
if (sopt->sopt_level != IPPROTO_UDP) {
if (sopt->sopt_level != so->so_proto->pr_protocol) {
#ifdef INET6
if (INP_CHECK_SOCKAF(so, AF_INET6)) {
INP_WUNLOCK(inp);
@ -918,6 +990,34 @@ udp_ctloutput(struct socket *so, struct sockopt *sopt)
}
INP_WUNLOCK(inp);
break;
case UDPLITE_SEND_CSCOV:
case UDPLITE_RECV_CSCOV:
if (!isudplite) {
INP_WUNLOCK(inp);
error = ENOPROTOOPT;
break;
}
INP_WUNLOCK(inp);
error = sooptcopyin(sopt, &optval, sizeof(optval),
sizeof(optval));
if (error != 0)
break;
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("%s: inp == NULL", __func__));
INP_WLOCK(inp);
up = intoudpcb(inp);
KASSERT(up != NULL, ("%s: up == NULL", __func__));
if (optval != 0 && optval < 8) {
INP_WUNLOCK(inp);
error = EINVAL;
break;
}
if (sopt->sopt_name == UDPLITE_SEND_CSCOV)
up->u_txcslen = optval;
else
up->u_rxcslen = optval;
INP_WUNLOCK(inp);
break;
default:
INP_WUNLOCK(inp);
error = ENOPROTOOPT;
@ -935,6 +1035,22 @@ udp_ctloutput(struct socket *so, struct sockopt *sopt)
error = sooptcopyout(sopt, &optval, sizeof optval);
break;
#endif
case UDPLITE_SEND_CSCOV:
case UDPLITE_RECV_CSCOV:
if (!isudplite) {
INP_WUNLOCK(inp);
error = ENOPROTOOPT;
break;
}
up = intoudpcb(inp);
KASSERT(up != NULL, ("%s: up == NULL", __func__));
if (sopt->sopt_name == UDPLITE_SEND_CSCOV)
optval = up->u_txcslen;
else
optval = up->u_rxcslen;
INP_WUNLOCK(inp);
error = sooptcopyout(sopt, &optval, sizeof(optval));
break;
default:
INP_WUNLOCK(inp);
error = ENOPROTOOPT;
@ -957,12 +1073,16 @@ udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
int len = m->m_pkthdr.len;
struct in_addr faddr, laddr;
struct cmsghdr *cm;
struct inpcbinfo *pcbinfo;
struct sockaddr_in *sin, src;
int cscov_partial = 0;
int error = 0;
int ipflags;
u_short fport, lport;
int unlock_udbinfo;
u_char tos;
uint8_t pr;
uint16_t cscov = 0;
/*
* udp_output() may need to temporarily bind or connect the current
@ -1057,12 +1177,14 @@ udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
*
* XXXRW: Check that hash locking update here is correct.
*/
pr = inp->inp_socket->so_proto->pr_protocol;
pcbinfo = get_inpcbinfo(pr);
sin = (struct sockaddr_in *)addr;
if (sin != NULL &&
(inp->inp_laddr.s_addr == INADDR_ANY && inp->inp_lport == 0)) {
INP_RUNLOCK(inp);
INP_WLOCK(inp);
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
unlock_udbinfo = UH_WLOCKED;
} else if ((sin != NULL && (
(sin->sin_addr.s_addr == INADDR_ANY) ||
@ -1070,7 +1192,7 @@ udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
(inp->inp_laddr.s_addr == INADDR_ANY) ||
(inp->inp_lport == 0))) ||
(src.sin_family == AF_INET)) {
INP_HASH_RLOCK(&V_udbinfo);
INP_HASH_RLOCK(pcbinfo);
unlock_udbinfo = UH_RLOCKED;
} else
unlock_udbinfo = UH_UNLOCKED;
@ -1083,7 +1205,7 @@ udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
laddr = inp->inp_laddr;
lport = inp->inp_lport;
if (src.sin_family == AF_INET) {
INP_HASH_LOCK_ASSERT(&V_udbinfo);
INP_HASH_LOCK_ASSERT(pcbinfo);
if ((lport == 0) ||
(laddr.s_addr == INADDR_ANY &&
src.sin_addr.s_addr == INADDR_ANY)) {
@ -1134,7 +1256,7 @@ udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
inp->inp_lport == 0 ||
sin->sin_addr.s_addr == INADDR_ANY ||
sin->sin_addr.s_addr == INADDR_BROADCAST) {
INP_HASH_LOCK_ASSERT(&V_udbinfo);
INP_HASH_LOCK_ASSERT(pcbinfo);
error = in_pcbconnect_setup(inp, addr, &laddr.s_addr,
&lport, &faddr.s_addr, &fport, NULL,
td->td_ucred);
@ -1149,7 +1271,7 @@ udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
if (inp->inp_laddr.s_addr == INADDR_ANY &&
inp->inp_lport == 0) {
INP_WLOCK_ASSERT(inp);
INP_HASH_WLOCK_ASSERT(&V_udbinfo);
INP_HASH_WLOCK_ASSERT(pcbinfo);
/*
* Remember addr if jailed, to prevent
* rebinding.
@ -1198,13 +1320,30 @@ udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
*/
ui = mtod(m, struct udpiphdr *);
bzero(ui->ui_x1, sizeof(ui->ui_x1)); /* XXX still needed? */
ui->ui_v = IPVERSION << 4;
ui->ui_pr = IPPROTO_UDP;
ui->ui_pr = pr;
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));
if (pr == IPPROTO_UDPLITE) {
struct udpcb *up;
uint16_t plen;
up = intoudpcb(inp);
cscov = up->u_txcslen;
plen = (u_short)len + sizeof(struct udphdr);
if (cscov >= plen)
cscov = 0;
ui->ui_len = htons(plen);
ui->ui_ulen = htons(cscov);
/*
* For UDP-Lite, checksum coverage length of zero means
* the entire UDPLite packet is covered by the checksum.
*/
cscov_partial = (cscov == 0) ? 0 : 1;
} else
ui->ui_v = IPVERSION << 4;
/*
* Set the Don't Fragment bit in the IP header.
@ -1231,24 +1370,29 @@ udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
/*
* Set up checksum and output datagram.
*/
if (V_udp_cksum) {
ui->ui_sum = 0;
if (cscov_partial) {
if (inp->inp_flags & INP_ONESBCAST)
faddr.s_addr = INADDR_BROADCAST;
if ((ui->ui_sum = in_cksum(m, sizeof(struct ip) + cscov)) == 0)
ui->ui_sum = 0xffff;
} else if (V_udp_cksum || !cscov_partial) {
if (inp->inp_flags & INP_ONESBCAST)
faddr.s_addr = INADDR_BROADCAST;
ui->ui_sum = in_pseudo(ui->ui_src.s_addr, faddr.s_addr,
htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));
htons((u_short)len + sizeof(struct udphdr) + pr));
m->m_pkthdr.csum_flags = CSUM_UDP;
m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
} else
ui->ui_sum = 0;
}
((struct ip *)ui)->ip_len = htons(sizeof(struct udpiphdr) + len);
((struct ip *)ui)->ip_ttl = inp->inp_ip_ttl; /* XXX */
((struct ip *)ui)->ip_tos = tos; /* XXX */
UDPSTAT_INC(udps_opackets);
if (unlock_udbinfo == UH_WLOCKED)
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
else if (unlock_udbinfo == UH_RLOCKED)
INP_HASH_RUNLOCK(&V_udbinfo);
INP_HASH_RUNLOCK(pcbinfo);
UDP_PROBE(send, NULL, inp, &ui->ui_i, inp, &ui->ui_u);
error = ip_output(m, inp->inp_options, NULL, ipflags,
inp->inp_moptions, inp);
@ -1260,10 +1404,10 @@ udp_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr,
release:
if (unlock_udbinfo == UH_WLOCKED) {
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
INP_WUNLOCK(inp);
} else if (unlock_udbinfo == UH_RLOCKED) {
INP_HASH_RUNLOCK(&V_udbinfo);
INP_HASH_RUNLOCK(pcbinfo);
INP_RUNLOCK(inp);
} else
INP_RUNLOCK(inp);
@ -1410,15 +1554,17 @@ static void
udp_abort(struct socket *so)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp_abort: inp == NULL"));
INP_WLOCK(inp);
if (inp->inp_faddr.s_addr != INADDR_ANY) {
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
in_pcbdisconnect(inp);
inp->inp_laddr.s_addr = INADDR_ANY;
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
soisdisconnected(so);
}
INP_WUNLOCK(inp);
@ -1428,17 +1574,19 @@ static int
udp_attach(struct socket *so, int proto, struct thread *td)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
int error;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp == NULL, ("udp_attach: inp != NULL"));
error = soreserve(so, udp_sendspace, udp_recvspace);
if (error)
return (error);
INP_INFO_WLOCK(&V_udbinfo);
error = in_pcballoc(so, &V_udbinfo);
INP_INFO_WLOCK(pcbinfo);
error = in_pcballoc(so, pcbinfo);
if (error) {
INP_INFO_WUNLOCK(&V_udbinfo);
INP_INFO_WUNLOCK(pcbinfo);
return (error);
}
@ -1450,12 +1598,12 @@ udp_attach(struct socket *so, int proto, struct thread *td)
if (error) {
in_pcbdetach(inp);
in_pcbfree(inp);
INP_INFO_WUNLOCK(&V_udbinfo);
INP_INFO_WUNLOCK(pcbinfo);
return (error);
}
INP_WUNLOCK(inp);
INP_INFO_WUNLOCK(&V_udbinfo);
INP_INFO_WUNLOCK(pcbinfo);
return (0);
}
#endif /* INET */
@ -1486,14 +1634,16 @@ static int
udp_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
int error;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp_bind: inp == NULL"));
INP_WLOCK(inp);
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
error = in_pcbbind(inp, nam, td->td_ucred);
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
INP_WUNLOCK(inp);
return (error);
}
@ -1502,15 +1652,17 @@ static void
udp_close(struct socket *so)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp_close: inp == NULL"));
INP_WLOCK(inp);
if (inp->inp_faddr.s_addr != INADDR_ANY) {
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
in_pcbdisconnect(inp);
inp->inp_laddr.s_addr = INADDR_ANY;
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
soisdisconnected(so);
}
INP_WUNLOCK(inp);
@ -1520,9 +1672,11 @@ static int
udp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
{
struct inpcb *inp;
int error;
struct inpcbinfo *pcbinfo;
struct sockaddr_in *sin;
int error;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp_connect: inp == NULL"));
INP_WLOCK(inp);
@ -1536,9 +1690,9 @@ udp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
INP_WUNLOCK(inp);
return (error);
}
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
error = in_pcbconnect(inp, nam, td->td_ucred);
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
if (error == 0)
soisconnected(so);
INP_WUNLOCK(inp);
@ -1549,20 +1703,22 @@ static void
udp_detach(struct socket *so)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
struct udpcb *up;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp_detach: inp == NULL"));
KASSERT(inp->inp_faddr.s_addr == INADDR_ANY,
("udp_detach: not disconnected"));
INP_INFO_WLOCK(&V_udbinfo);
INP_INFO_WLOCK(pcbinfo);
INP_WLOCK(inp);
up = intoudpcb(inp);
KASSERT(up != NULL, ("%s: up == NULL", __func__));
inp->inp_ppcb = NULL;
in_pcbdetach(inp);
in_pcbfree(inp);
INP_INFO_WUNLOCK(&V_udbinfo);
INP_INFO_WUNLOCK(pcbinfo);
udp_discardcb(up);
}
@ -1570,7 +1726,9 @@ static int
udp_disconnect(struct socket *so)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp_disconnect: inp == NULL"));
INP_WLOCK(inp);
@ -1578,10 +1736,10 @@ udp_disconnect(struct socket *so)
INP_WUNLOCK(inp);
return (ENOTCONN);
}
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
in_pcbdisconnect(inp);
inp->inp_laddr.s_addr = INADDR_ANY;
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
SOCK_LOCK(so);
so->so_state &= ~SS_ISCONNECTED; /* XXX */
SOCK_UNLOCK(so);

27
sys/netinet/udp_var.h
View File

@ -63,6 +63,8 @@ typedef void(*udp_tun_func_t)(struct mbuf *, int off, struct inpcb *);
struct udpcb {
udp_tun_func_t u_tun_func; /* UDP kernel tunneling callback. */
u_int u_flags; /* Generic UDP flags. */
uint16_t u_rxcslen; /* Coverage for incoming datagrams. */
uint16_t u_txcslen; /* Coverage for outgoing datagrams. */
};
#define intoudpcb(ip) ((struct udpcb *)(ip)->inp_ppcb)
@ -129,8 +131,12 @@ SYSCTL_DECL(_net_inet_udp);
extern struct pr_usrreqs udp_usrreqs;
VNET_DECLARE(struct inpcbhead, udb);
VNET_DECLARE(struct inpcbinfo, udbinfo);
VNET_DECLARE(struct inpcbhead, ulitecb);
VNET_DECLARE(struct inpcbinfo, ulitecbinfo);
#define V_udb VNET(udb)
#define V_udbinfo VNET(udbinfo)
#define V_ulitecb VNET(ulitecb)
#define V_ulitecbinfo VNET(ulitecbinfo)
extern u_long udp_sendspace;
extern u_long udp_recvspace;
@ -140,20 +146,37 @@ VNET_DECLARE(int, udp_blackhole);
#define V_udp_blackhole VNET(udp_blackhole)
extern int udp_log_in_vain;
static __inline struct inpcbinfo *
get_inpcbinfo(uint8_t protocol)
{
return (protocol == IPPROTO_UDP) ? &V_udbinfo : &V_ulitecbinfo;
}
static __inline struct inpcbhead *
get_pcblist(uint8_t protocol)
{
return (protocol == IPPROTO_UDP) ? &V_udb : &V_ulitecb;
}
int udp_newudpcb(struct inpcb *);
void udp_discardcb(struct udpcb *);
void udp_ctlinput(int, struct sockaddr *, void *);
void udplite_ctlinput(int, struct sockaddr *, void *);
int udp_ctloutput(struct socket *, struct sockopt *);
void udp_init(void);
void udplite_init(void);
#ifdef VIMAGE
void udp_destroy(void);
void udplite_destroy(void);
#endif
void udp_input(struct mbuf *, int);
void udplite_input(struct mbuf *, int);
struct inpcb *udp_notify(struct inpcb *inp, int errno);
int udp_shutdown(struct socket *so);
int udp_set_kernel_tunneling(struct socket *so, udp_tun_func_t f);
#endif
#endif
#endif /* _KERNEL */
#endif /* _NETINET_UDP_VAR_H_ */

38
sys/netinet/udplite.h Normal file
View File

@ -0,0 +1,38 @@
/*-
* Copyright (c) 2014, Kevin Lo
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _NETINET_UDPLITE_H_
#define _NETINET_UDPLITE_H_
/*
* User-settable options (used with setsockopt).
*/
#define UDPLITE_SEND_CSCOV 2 /* Sender checksum coverage. */
#define UDPLITE_RECV_CSCOV 4 /* Receiver checksum coverage. */
#endif /* !_NETINET_UDPLITE_H_ */

1
sys/netinet6/in6_ifattach.c
View File

@ -829,6 +829,7 @@ in6_ifdetach(struct ifnet *ifp)
}
in6_pcbpurgeif0(&V_udbinfo, ifp);
in6_pcbpurgeif0(&V_ulitecbinfo, ifp);
in6_pcbpurgeif0(&V_ripcbinfo, ifp);
/* leave from all multicast groups joined */
in6_purgemaddrs(ifp);

13
sys/netinet6/in6_proto.c
View File

@ -214,6 +214,19 @@ struct ip6protosw inet6sw[] = {
.pr_usrreqs = &sctp6_usrreqs
},
#endif /* SCTP */
{
.pr_type = SOCK_DGRAM,
.pr_domain = &inet6domain,
.pr_protocol = IPPROTO_UDPLITE,
.pr_flags = PR_ATOMIC|PR_ADDR,
.pr_input = udp6_input,
.pr_ctlinput = udplite6_ctlinput,
.pr_ctloutput = udp_ctloutput,
#ifndef INET /* Do not call initialization twice. */
.pr_init = udplite_init,
#endif
.pr_usrreqs = &udp6_usrreqs,
},
{
.pr_type = SOCK_RAW,
.pr_domain = &inet6domain,

168
sys/netinet6/udp6_usrreq.c
View File

@ -1,6 +1,7 @@
/*-
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* Copyright (c) 2010-2011 Juniper Networks, Inc.
* Copyright (c) 2014 Kevin Lo
* All rights reserved.
*
* Portions of this software were developed by Robert N. M. Watson under
@ -109,6 +110,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/udplite.h>
#include <netinet6/ip6protosw.h>
#include <netinet6/ip6_var.h>
@ -181,12 +183,15 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
struct ip6_hdr *ip6;
struct udphdr *uh;
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
struct udpcb *up;
int off = *offp;
int cscov_partial;
int plen, ulen;
struct sockaddr_in6 fromsa;
struct m_tag *fwd_tag;
uint16_t uh_sum;
uint8_t nxt;
ifp = m->m_pkthdr.rcvif;
ip6 = mtod(m, struct ip6_hdr *);
@ -218,6 +223,13 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
plen = ntohs(ip6->ip6_plen) - off + sizeof(*ip6);
ulen = ntohs((u_short)uh->uh_ulen);
nxt = ip6->ip6_nxt;
cscov_partial = (nxt == IPPROTO_UDPLITE) ? 1 : 0;
if (nxt == IPPROTO_UDPLITE && ulen == 0) {
/* Zero means checksum over the complete packet. */
ulen = plen;
cscov_partial = 0;
}
if (plen != ulen) {
UDPSTAT_INC(udps_badlen);
goto badunlocked;
@ -227,19 +239,22 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
* Checksum extended UDP header and data.
*/
if (uh->uh_sum == 0) {
UDPSTAT_INC(udps_nosum);
goto badunlocked;
if (ulen > plen || ulen < sizeof(struct udphdr)) {
UDPSTAT_INC(udps_nosum);
goto badunlocked;
}
}
if (m->m_pkthdr.csum_flags & CSUM_DATA_VALID_IPV6) {
if ((m->m_pkthdr.csum_flags & CSUM_DATA_VALID_IPV6) &&
!cscov_partial) {
if (m->m_pkthdr.csum_flags & CSUM_PSEUDO_HDR)
uh_sum = m->m_pkthdr.csum_data;
else
uh_sum = in6_cksum_pseudo(ip6, ulen,
IPPROTO_UDP, m->m_pkthdr.csum_data);
uh_sum = in6_cksum_pseudo(ip6, ulen, nxt,
m->m_pkthdr.csum_data);
uh_sum ^= 0xffff;
} else
uh_sum = in6_cksum(m, IPPROTO_UDP, off, ulen);
uh_sum = in6_cksum(m, nxt, off, ulen);
if (uh_sum != 0) {
UDPSTAT_INC(udps_badsum);
@ -252,11 +267,13 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
init_sin6(&fromsa, m);
fromsa.sin6_port = uh->uh_sport;
pcbinfo = get_inpcbinfo(nxt);
if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
struct inpcb *last;
struct inpcbhead *pcblist;
struct ip6_moptions *imo;
INP_INFO_RLOCK(&V_udbinfo);
INP_INFO_RLOCK(pcbinfo);
/*
* In the event that laddr should be set to the link-local
* address (this happens in RIPng), the multicast address
@ -272,8 +289,9 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
* here. We need udphdr for IPsec processing so we do that
* later.
*/
pcblist = get_pcblist(nxt);
last = NULL;
LIST_FOREACH(inp, &V_udb, inp_list) {
LIST_FOREACH(inp, pcblist, inp_list) {
if ((inp->inp_vflag & INP_IPV6) == 0)
continue;
if (inp->inp_lport != uh->uh_dport)
@ -378,7 +396,7 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
goto badheadlocked;
}
INP_RLOCK(last);
INP_INFO_RUNLOCK(&V_udbinfo);
INP_INFO_RUNLOCK(pcbinfo);
up = intoudpcb(last);
UDP_PROBE(receive, NULL, last, ip6, last, uh);
if (up->u_tun_func == NULL) {
@ -409,8 +427,8 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
* Transparently forwarded. Pretend to be the destination.
* Already got one like this?
*/
inp = in6_pcblookup_mbuf(&V_udbinfo,
&ip6->ip6_src, uh->uh_sport, &ip6->ip6_dst, uh->uh_dport,
inp = in6_pcblookup_mbuf(pcbinfo, &ip6->ip6_src,
uh->uh_sport, &ip6->ip6_dst, uh->uh_dport,
INPLOOKUP_RLOCKPCB, m->m_pkthdr.rcvif, m);
if (!inp) {
/*
@ -418,7 +436,7 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
* Because we've rewritten the destination address,
* any hardware-generated hash is ignored.
*/
inp = in6_pcblookup(&V_udbinfo, &ip6->ip6_src,
inp = in6_pcblookup(pcbinfo, &ip6->ip6_src,
uh->uh_sport, &next_hop6->sin6_addr,
next_hop6->sin6_port ? htons(next_hop6->sin6_port) :
uh->uh_dport, INPLOOKUP_WILDCARD |
@ -428,7 +446,7 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
m_tag_delete(m, fwd_tag);
m->m_flags &= ~M_IP6_NEXTHOP;
} else
inp = in6_pcblookup_mbuf(&V_udbinfo, &ip6->ip6_src,
inp = in6_pcblookup_mbuf(pcbinfo, &ip6->ip6_src,
uh->uh_sport, &ip6->ip6_dst, uh->uh_dport,
INPLOOKUP_WILDCARD | INPLOOKUP_RLOCKPCB,
m->m_pkthdr.rcvif, m);
@ -459,6 +477,13 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
}
INP_RLOCK_ASSERT(inp);
up = intoudpcb(inp);
if (cscov_partial) {
if (up->u_rxcslen > ulen) {
INP_RUNLOCK(inp);
m_freem(m);
return (IPPROTO_DONE);
}
}
UDP_PROBE(receive, NULL, inp, ip6, inp, uh);
if (up->u_tun_func == NULL) {
udp6_append(inp, m, off, &fromsa);
@ -473,15 +498,16 @@ udp6_input(struct mbuf **mp, int *offp, int proto)
return (IPPROTO_DONE);
badheadlocked:
INP_INFO_RUNLOCK(&V_udbinfo);
INP_INFO_RUNLOCK(pcbinfo);
badunlocked:
if (m)
m_freem(m);
return (IPPROTO_DONE);
}
void
udp6_ctlinput(int cmd, struct sockaddr *sa, void *d)
static void
udp6_common_ctlinput(int cmd, struct sockaddr *sa, void *d,
struct inpcbinfo *pcbinfo)
{
struct udphdr uh;
struct ip6_hdr *ip6;
@ -537,14 +563,28 @@ udp6_ctlinput(int cmd, struct sockaddr *sa, void *d)
bzero(&uh, sizeof(uh));
m_copydata(m, off, sizeof(*uhp), (caddr_t)&uh);
(void) in6_pcbnotify(&V_udbinfo, sa, uh.uh_dport,
(void)in6_pcbnotify(pcbinfo, sa, uh.uh_dport,
(struct sockaddr *)ip6cp->ip6c_src, uh.uh_sport, cmd,
cmdarg, notify);
} else
(void) in6_pcbnotify(&V_udbinfo, sa, 0,
(void)in6_pcbnotify(pcbinfo, sa, 0,
(const struct sockaddr *)sa6_src, 0, cmd, cmdarg, notify);
}
void
udp6_ctlinput(int cmd, struct sockaddr *sa, void *d)
{
return (udp6_common_ctlinput(cmd, sa, d, &V_udbinfo));
}
void
udplite6_ctlinput(int cmd, struct sockaddr *sa, void *d)
{
return (udp6_common_ctlinput(cmd, sa, d, &V_ulitecbinfo));
}
static int
udp6_getcred(SYSCTL_HANDLER_ARGS)
{
@ -602,9 +642,12 @@ udp6_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr6,
struct in6_addr *laddr, *faddr, in6a;
struct sockaddr_in6 *sin6 = NULL;
struct ifnet *oifp = NULL;
int cscov_partial = 0;
int scope_ambiguous = 0;
u_short fport;
int error = 0;
uint8_t nxt;
uint16_t cscov = 0;
struct ip6_pktopts *optp, opt;
int af = AF_INET6, hlen = sizeof(struct ip6_hdr);
int flags;
@ -761,10 +804,25 @@ udp6_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr6,
/*
* Stuff checksum and output datagram.
*/
nxt = (inp->inp_socket->so_proto->pr_protocol == IPPROTO_UDP) ?
IPPROTO_UDP : IPPROTO_UDPLITE;
udp6 = (struct udphdr *)(mtod(m, caddr_t) + hlen);
udp6->uh_sport = inp->inp_lport; /* lport is always set in the PCB */
udp6->uh_dport = fport;
if (plen <= 0xffff)
if (nxt == IPPROTO_UDPLITE) {
struct udpcb *up;
up = intoudpcb(inp);
cscov = up->u_txcslen;
if (cscov >= plen)
cscov = 0;
udp6->uh_ulen = htons(cscov);
/*
* For UDP-Lite, checksum coverage length of zero means
* the entire UDPLite packet is covered by the checksum.
*/
cscov_partial = (cscov == 0) ? 0 : 1;
} else if (plen <= 0xffff)
udp6->uh_ulen = htons((u_short)plen);
else
udp6->uh_ulen = 0;
@ -777,14 +835,20 @@ udp6_output(struct inpcb *inp, struct mbuf *m, struct sockaddr *addr6,
ip6->ip6_vfc &= ~IPV6_VERSION_MASK;
ip6->ip6_vfc |= IPV6_VERSION;
ip6->ip6_plen = htons((u_short)plen);
ip6->ip6_nxt = IPPROTO_UDP;
ip6->ip6_nxt = nxt;
ip6->ip6_hlim = in6_selecthlim(inp, NULL);
ip6->ip6_src = *laddr;
ip6->ip6_dst = *faddr;
udp6->uh_sum = in6_cksum_pseudo(ip6, plen, IPPROTO_UDP, 0);
m->m_pkthdr.csum_flags = CSUM_UDP_IPV6;
m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
if (cscov_partial) {
if ((udp6->uh_sum = in6_cksum(m, 0,
sizeof(struct ip6_hdr), cscov)) == 0)
udp6->uh_sum = 0xffff;
} else {
udp6->uh_sum = in6_cksum_pseudo(ip6, plen, nxt, 0);
m->m_pkthdr.csum_flags = CSUM_UDP_IPV6;
m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
}
flags = 0;
@ -814,7 +878,9 @@ static void
udp6_abort(struct socket *so)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp6_abort: inp == NULL"));
@ -830,10 +896,10 @@ udp6_abort(struct socket *so)
INP_WLOCK(inp);
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) {
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
in6_pcbdisconnect(inp);
inp->in6p_laddr = in6addr_any;
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
soisdisconnected(so);
}
INP_WUNLOCK(inp);
@ -843,8 +909,10 @@ static int
udp6_attach(struct socket *so, int proto, struct thread *td)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
int error;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp == NULL, ("udp6_attach: inp != NULL"));
@ -853,10 +921,10 @@ udp6_attach(struct socket *so, int proto, struct thread *td)
if (error)
return (error);
}
INP_INFO_WLOCK(&V_udbinfo);
error = in_pcballoc(so, &V_udbinfo);
INP_INFO_WLOCK(pcbinfo);
error = in_pcballoc(so, pcbinfo);
if (error) {
INP_INFO_WUNLOCK(&V_udbinfo);
INP_INFO_WUNLOCK(pcbinfo);
return (error);
}
inp = (struct inpcb *)so->so_pcb;
@ -877,11 +945,11 @@ udp6_attach(struct socket *so, int proto, struct thread *td)
if (error) {
in_pcbdetach(inp);
in_pcbfree(inp);
INP_INFO_WUNLOCK(&V_udbinfo);
INP_INFO_WUNLOCK(pcbinfo);
return (error);
}
INP_WUNLOCK(inp);
INP_INFO_WUNLOCK(&V_udbinfo);
INP_INFO_WUNLOCK(pcbinfo);
return (0);
}
@ -889,13 +957,15 @@ static int
udp6_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
int error;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp6_bind: inp == NULL"));
INP_WLOCK(inp);
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
inp->inp_vflag &= ~INP_IPV4;
inp->inp_vflag |= INP_IPV6;
if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0) {
@ -923,7 +993,7 @@ udp6_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
#ifdef INET
out:
#endif
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
INP_WUNLOCK(inp);
return (error);
}
@ -932,7 +1002,9 @@ static void
udp6_close(struct socket *so)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp6_close: inp == NULL"));
@ -947,10 +1019,10 @@ udp6_close(struct socket *so)
#endif
INP_WLOCK(inp);
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) {
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
in6_pcbdisconnect(inp);
inp->in6p_laddr = in6addr_any;
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
soisdisconnected(so);
}
INP_WUNLOCK(inp);
@ -960,9 +1032,11 @@ static int
udp6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
struct sockaddr_in6 *sin6;
int error;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
sin6 = (struct sockaddr_in6 *)nam;
KASSERT(inp != NULL, ("udp6_connect: inp == NULL"));
@ -989,10 +1063,10 @@ udp6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
error = prison_remote_ip4(td->td_ucred, &sin.sin_addr);
if (error != 0)
goto out;
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
error = in_pcbconnect(inp, (struct sockaddr *)&sin,
td->td_ucred);
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
if (error == 0)
soisconnected(so);
goto out;
@ -1007,9 +1081,9 @@ udp6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
error = prison_remote_ip6(td->td_ucred, &sin6->sin6_addr);
if (error != 0)
goto out;
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
error = in6_pcbconnect(inp, nam, td->td_ucred);
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
if (error == 0)
soisconnected(so);
out:
@ -1021,18 +1095,20 @@ static void
udp6_detach(struct socket *so)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
struct udpcb *up;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp6_detach: inp == NULL"));
INP_INFO_WLOCK(&V_udbinfo);
INP_INFO_WLOCK(pcbinfo);
INP_WLOCK(inp);
up = intoudpcb(inp);
KASSERT(up != NULL, ("%s: up == NULL", __func__));
in_pcbdetach(inp);
in_pcbfree(inp);
INP_INFO_WUNLOCK(&V_udbinfo);
INP_INFO_WUNLOCK(pcbinfo);
udp_discardcb(up);
}
@ -1040,8 +1116,10 @@ static int
udp6_disconnect(struct socket *so)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
int error;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp6_disconnect: inp == NULL"));
@ -1062,10 +1140,10 @@ udp6_disconnect(struct socket *so)
goto out;
}
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
in6_pcbdisconnect(inp);
inp->in6p_laddr = in6addr_any;
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
SOCK_LOCK(so);
so->so_state &= ~SS_ISCONNECTED; /* XXX */
SOCK_UNLOCK(so);
@ -1079,8 +1157,10 @@ udp6_send(struct socket *so, int flags, struct mbuf *m,
struct sockaddr *addr, struct mbuf *control, struct thread *td)
{
struct inpcb *inp;
struct inpcbinfo *pcbinfo;
int error = 0;
pcbinfo = get_inpcbinfo(so->so_proto->pr_protocol);
inp = sotoinpcb(so);
KASSERT(inp != NULL, ("udp6_send: inp == NULL"));
@ -1132,9 +1212,9 @@ udp6_send(struct socket *so, int flags, struct mbuf *m,
#ifdef MAC
mac_inpcb_create_mbuf(inp, m);
#endif
INP_HASH_WLOCK(&V_udbinfo);
INP_HASH_WLOCK(pcbinfo);
error = udp6_output(inp, m, addr, control, td);
INP_HASH_WUNLOCK(&V_udbinfo);
INP_HASH_WUNLOCK(pcbinfo);
#ifdef INET
#endif
INP_WUNLOCK(inp);

1
sys/netinet6/udp6_var.h
View File

@ -69,6 +69,7 @@ SYSCTL_DECL(_net_inet6_udp6);
extern struct pr_usrreqs udp6_usrreqs;
void udp6_ctlinput(int, struct sockaddr *, void *);
void udplite6_ctlinput(int, struct sockaddr *, void *);
int udp6_input(struct mbuf **, int *, int);
#endif

2
sys/sys/param.h
View File

@ -58,7 +58,7 @@
* in the range 5 to 9.
*/
#undef __FreeBSD_version
#define __FreeBSD_version 1100017 /* Master, propagated to newvers */
#define __FreeBSD_version 1100018 /* Master, propagated to newvers */
/*
* __FreeBSD_kernel__ indicates that this system uses the kernel of FreeBSD,