////////////////////////////////////////////////////////////////////////////////
//
// in_firewire_arp_input
//
// IN: register struct mbuf *m
//
// Invoked by :
// firewire_arpintr calls it from the context of dlil_input_thread queue
//
// ARP for Internet protocols on 10 Mb/s Ethernet.
// Algorithm is that given in RFC 826.
// In addition, a sanity check is performed on the sender
// protocol address, to catch impersonators.
// We no longer handle negotiations for use of trailer protocol:
// Formerly, ARP replied for protocol type ETHERTYPE_TRAIL sent
// along with IP replies if we wanted trailers sent to us,
// and also sent them in response to IP replies.
// This allowed either end to announce the desire to receive trailer packets.
// We no longer reply to requests for ETHERTYPE_TRAIL protocol either,
// but formerly didn't normally send requests.
//
////////////////////////////////////////////////////////////////////////////////
static void
inet_firewire_arp_input(
mbuf_t m)
{
IP1394_ARP *fwa;
struct sockaddr_dl sender_hw;
struct sockaddr_in sender_ip;
struct sockaddr_in target_ip;
ifnet_t ifp = mbuf_pkthdr_rcvif((mbuf_t)m);
IOFWInterface *fwIf = (IOFWInterface*)ifnet_softc(ifp);
if(fwIf == NULL)
return;
IOFireWireIP *fwIpObj = (IOFireWireIP*)fwIf->getController();
if(fwIpObj == NULL)
return;
if (mbuf_len(m) < (int)sizeof(IP1394_ARP) &&
mbuf_pullup(&m, sizeof(IP1394_ARP)) != 0)
return;
fwa = (IP1394_ARP*)mbuf_data(m);
// Verify this is an firewire/ip arp and address lengths are correct
if (fwa->hardwareType != htons(ARP_HDW_TYPE) || fwa->protocolType != htons(FWTYPE_IP)
|| fwa->hwAddrLen != sizeof(IP1394_HDW_ADDR) || fwa->ipAddrLen != IPV4_ADDR_SIZE)
{
mbuf_free(m);
return;
}
bzero(&sender_ip, sizeof(sender_ip));
sender_ip.sin_len = sizeof(sender_ip);
sender_ip.sin_family = AF_INET;
sender_ip.sin_addr.s_addr = fwa->senderIpAddress;
target_ip = sender_ip;
target_ip.sin_addr.s_addr = fwa->targetIpAddress;
bzero(&sender_hw, sizeof(sender_hw));
sender_hw.sdl_len = sizeof(sender_hw);
sender_hw.sdl_family = AF_LINK;
sender_hw.sdl_type = IFT_IEEE1394;
sender_hw.sdl_alen = FIREWIRE_ADDR_LEN;
bcopy(&fwa->senderUniqueID, LLADDR(&sender_hw), FIREWIRE_ADDR_LEN);
if(fwIpObj->arpCacheHandler(fwa))
inet_arp_handle_input(ifp, ntohs(fwa->opcode), &sender_hw, &sender_ip, &target_ip);
mbuf_free((mbuf_t)m);
}
void net_habitue_device_SC101::handleResolvePacket(sockaddr_in *addr, mbuf_t m, size_t len, outstanding *out, void *ctx)
{
clock_get_uptime(&_lastReply);
if (mbuf_len(m) < out->len &&
mbuf_pullup(&m, out->len) != 0)
{
KINFO("pullup failed");
return;
}
KDEBUG("resolve succeeded!");
psan_resolve_response_t *res = (psan_resolve_response_t *)mbuf_data(m);
sockaddr_in part;
bzero(&part, sizeof(part));
part.sin_len = sizeof(part);
part.sin_family = AF_INET;
part.sin_port = htons(PSAN_PORT);
part.sin_addr = res->ip4;
OSData *partData = OSData::withBytes(&part, sizeof(part));
if (partData)
{
setProperty(gSC101DevicePartitionAddressKey, partData);
partData->release();
}
OSData *rootData = OSData::withBytes(addr, sizeof(*addr));
if (rootData)
{
setProperty(gSC101DeviceRootAddressKey, rootData);
rootData->release();
}
IODelete(out, outstanding, 1);
mbuf_freem(m);
if (!getProperty(gSC101DeviceSizeKey))
disk();
}
////////////////////////////////////////////////////////////////////////////////
//
// inet_firewire_input
//
// IN: struct mbuf *m, char *frame_header, ifnet_t ifp,
// IN: u_long dl_tag, int sync_ok
//
// Invoked by :
// It will be called from the context of dlil_input_thread queue from
// dlil_input_packet
//
// Process a received firewire ARP/IP packet, the packet is in the mbuf
// chain m
//
////////////////////////////////////////////////////////////////////////////////
static errno_t
inet_firewire_input(
__unused ifnet_t ifp,
__unused protocol_family_t protocol_family,
mbuf_t m,
char *frame_header)
{
struct firewire_header *eh = (struct firewire_header *)frame_header;
u_short fw_type;
ifnet_touch_lastchange(ifp);
fw_type = ntohs(eh->fw_type);
switch (fw_type)
{
case FWTYPE_IP:
{
mbuf_pullup(&m, sizeof(struct ip));
if (m == NULL)
return EJUSTRETURN;
errno_t ret = proto_input(PF_INET, m);
if( ret )
mbuf_freem(m);
return ret;
}
case FWTYPE_ARP:
firewire_arpintr(m);
break;
default:
return ENOENT;
}
return 0;
}
/*
* Do a remote procedure call (RPC) and wait for its reply.
* If from_p is non-null, then we are doing broadcast, and
* the address from whence the response came is saved there.
*/
int
krpc_call(
struct sockaddr_in *sa,
u_int sotype, u_int prog, u_int vers, u_int func,
mbuf_t *data, /* input/output */
struct sockaddr_in *from_p) /* output */
{
socket_t so;
struct sockaddr_in *sin;
mbuf_t m, nam, mhead;
struct rpc_call *call;
struct rpc_reply *reply;
int error, timo, secs;
size_t len;
static u_int32_t xid = ~0xFF;
u_int16_t tport;
size_t maxpacket = 1<<16;
/*
* Validate address family.
* Sorry, this is INET specific...
*/
if (sa->sin_family != AF_INET)
return (EAFNOSUPPORT);
/* Free at end if not null. */
nam = mhead = NULL;
/*
* Create socket and set its recieve timeout.
*/
if ((error = sock_socket(AF_INET, sotype, 0, 0, 0, &so)))
goto out1;
{
struct timeval tv;
tv.tv_sec = 1;
tv.tv_usec = 0;
if ((error = sock_setsockopt(so, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv))))
goto out;
}
/*
* Enable broadcast if necessary.
*/
if (from_p && (sotype == SOCK_DGRAM)) {
int on = 1;
if ((error = sock_setsockopt(so, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on))))
goto out;
}
/*
* Bind the local endpoint to a reserved port,
* because some NFS servers refuse requests from
* non-reserved (non-privileged) ports.
*/
if ((error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_SONAME, &m)))
goto out;
sin = mbuf_data(m);
bzero(sin, sizeof(*sin));
mbuf_setlen(m, sizeof(*sin));
sin->sin_len = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_addr.s_addr = INADDR_ANY;
tport = IPPORT_RESERVED;
do {
tport--;
sin->sin_port = htons(tport);
error = sock_bind(so, (struct sockaddr*)sin);
} while (error == EADDRINUSE &&
tport > IPPORT_RESERVED / 2);
mbuf_freem(m);
m = NULL;
if (error) {
printf("bind failed\n");
goto out;
}
/*
* Setup socket address for the server.
*/
if ((error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_SONAME, &nam)))
goto out;
sin = mbuf_data(nam);
mbuf_setlen(nam, sa->sin_len);
bcopy((caddr_t)sa, (caddr_t)sin, sa->sin_len);
if (sotype == SOCK_STREAM) {
struct timeval tv;
tv.tv_sec = 60;
tv.tv_usec = 0;
error = sock_connect(so, mbuf_data(nam), MSG_DONTWAIT);
if (error && (error != EINPROGRESS))
goto out;
error = sock_connectwait(so, &tv);
if (error) {
if (error == EINPROGRESS)
error = ETIMEDOUT;
printf("krpc_call: error waiting for TCP socket connect: %d\n", error);
goto out;
}
}
/*
* Prepend RPC message header.
*/
m = *data;
*data = NULL;
#if DIAGNOSTIC
if ((mbuf_flags(m) & MBUF_PKTHDR) == 0)
panic("krpc_call: send data w/o pkthdr");
if (mbuf_pkthdr_len(m) < mbuf_len(m))
panic("krpc_call: pkthdr.len not set");
#endif
len = sizeof(*call);
if (sotype == SOCK_STREAM)
len += 4; /* account for RPC record marker */
mhead = m;
if ((error = mbuf_prepend(&mhead, len, MBUF_WAITOK)))
goto out;
if ((error = mbuf_pkthdr_setrcvif(mhead, NULL)))
goto out;
/*
* Fill in the RPC header
*/
if (sotype == SOCK_STREAM) {
/* first, fill in RPC record marker */
u_int32_t *recmark = mbuf_data(mhead);
*recmark = htonl(0x80000000 | (mbuf_pkthdr_len(mhead) - 4));
call = (struct rpc_call *)(recmark + 1);
} else {
call = mbuf_data(mhead);
}
bzero((caddr_t)call, sizeof(*call));
xid++;
call->rp_xid = htonl(xid);
/* call->rp_direction = 0; */
call->rp_rpcvers = htonl(2);
call->rp_prog = htonl(prog);
call->rp_vers = htonl(vers);
call->rp_proc = htonl(func);
/* call->rp_auth = 0; */
/* call->rp_verf = 0; */
/*
* Send it, repeatedly, until a reply is received,
* but delay each re-send by an increasing amount.
* If the delay hits the maximum, start complaining.
*/
timo = 0;
for (;;) {
struct msghdr msg;
/* Send RPC request (or re-send). */
if ((error = mbuf_copym(mhead, 0, MBUF_COPYALL, MBUF_WAITOK, &m)))
goto out;
bzero(&msg, sizeof(msg));
if (sotype == SOCK_STREAM) {
msg.msg_name = NULL;
msg.msg_namelen = 0;
} else {
msg.msg_name = mbuf_data(nam);
msg.msg_namelen = mbuf_len(nam);
}
error = sock_sendmbuf(so, &msg, m, 0, 0);
if (error) {
printf("krpc_call: sosend: %d\n", error);
goto out;
}
m = NULL;
/* Determine new timeout. */
if (timo < MAX_RESEND_DELAY)
timo++;
else
printf("RPC timeout for server " IP_FORMAT "\n",
IP_LIST(&(sin->sin_addr.s_addr)));
/*
* Wait for up to timo seconds for a reply.
* The socket receive timeout was set to 1 second.
*/
secs = timo;
while (secs > 0) {
size_t readlen;
if (m) {
mbuf_freem(m);
m = NULL;
}
if (sotype == SOCK_STREAM) {
int maxretries = 60;
struct iovec aio;
aio.iov_base = &len;
aio.iov_len = sizeof(u_int32_t);
bzero(&msg, sizeof(msg));
msg.msg_iov = &aio;
msg.msg_iovlen = 1;
do {
error = sock_receive(so, &msg, MSG_WAITALL, &readlen);
if ((error == EWOULDBLOCK) && (--maxretries <= 0))
error = ETIMEDOUT;
} while (error == EWOULDBLOCK);
if (!error && readlen < aio.iov_len) {
/* only log a message if we got a partial word */
if (readlen != 0)
printf("short receive (%ld/%ld) from server " IP_FORMAT "\n",
readlen, sizeof(u_int32_t), IP_LIST(&(sin->sin_addr.s_addr)));
error = EPIPE;
}
if (error)
goto out;
len = ntohl(len) & ~0x80000000;
/*
* This is SERIOUS! We are out of sync with the sender
* and forcing a disconnect/reconnect is all I can do.
*/
if (len > maxpacket) {
printf("impossible packet length (%ld) from server " IP_FORMAT "\n",
len, IP_LIST(&(sin->sin_addr.s_addr)));
error = EFBIG;
goto out;
}
do {
readlen = len;
error = sock_receivembuf(so, NULL, &m, MSG_WAITALL, &readlen);
} while (error == EWOULDBLOCK);
if (!error && (len > readlen)) {
printf("short receive (%ld/%ld) from server " IP_FORMAT "\n",
readlen, len, IP_LIST(&(sin->sin_addr.s_addr)));
error = EPIPE;
}
} else {
len = maxpacket;
readlen = len;
bzero(&msg, sizeof(msg));
msg.msg_name = from_p;
msg.msg_namelen = (from_p == NULL) ? 0 : sizeof(*from_p);
error = sock_receivembuf(so, &msg, &m, 0, &readlen);
}
if (error == EWOULDBLOCK) {
secs--;
continue;
}
if (error)
goto out;
len = readlen;
/* Does the reply contain at least a header? */
if (len < MIN_REPLY_HDR)
continue;
if (mbuf_len(m) < MIN_REPLY_HDR)
continue;
reply = mbuf_data(m);
/* Is it the right reply? */
if (reply->rp_direction != htonl(RPC_REPLY))
continue;
if (reply->rp_xid != htonl(xid))
continue;
/* Was RPC accepted? (authorization OK) */
if (reply->rp_astatus != 0) {
error = ntohl(reply->rp_u.rpu_errno);
printf("rpc denied, error=%d\n", error);
/* convert rpc error to errno */
switch (error) {
case RPC_MISMATCH:
error = ERPCMISMATCH;
break;
case RPC_AUTHERR:
error = EAUTH;
break;
}
goto out;
}
if (mbuf_len(m) < REPLY_SIZE) {
error = RPC_SYSTEM_ERR;
}
else {
error = ntohl(reply->rp_u.rpu_ok.rp_rstatus);
}
/* Did the call succeed? */
if (error != 0) {
printf("rpc status=%d\n", error);
/* convert rpc error to errno */
switch (error) {
case RPC_PROGUNAVAIL:
error = EPROGUNAVAIL;
break;
case RPC_PROGMISMATCH:
error = EPROGMISMATCH;
break;
case RPC_PROCUNAVAIL:
error = EPROCUNAVAIL;
break;
case RPC_GARBAGE:
error = EINVAL;
break;
case RPC_SYSTEM_ERR:
error = EIO;
break;
}
goto out;
}
goto gotreply; /* break two levels */
} /* while secs */
} /* forever send/receive */
error = ETIMEDOUT;
goto out;
gotreply:
/*
* Pull as much as we can into first mbuf, to make
* result buffer contiguous. Note that if the entire
* result won't fit into one mbuf, you're out of luck.
* XXX - Should not rely on making the entire reply
* contiguous (fix callers instead). -gwr
*/
#if DIAGNOSTIC
if ((mbuf_flags(m) & MBUF_PKTHDR) == 0)
panic("krpc_call: received pkt w/o header?");
#endif
len = mbuf_pkthdr_len(m);
if (sotype == SOCK_STREAM)
len -= 4; /* the RPC record marker was read separately */
if (mbuf_len(m) < len) {
if ((error = mbuf_pullup(&m, len)))
goto out;
reply = mbuf_data(m);
}
/*
* Strip RPC header
*/
len = sizeof(*reply);
if (reply->rp_u.rpu_ok.rp_auth.rp_atype != 0) {
len += ntohl(reply->rp_u.rpu_ok.rp_auth.rp_alen);
len = (len + 3) & ~3; /* XXX? */
}
mbuf_adj(m, len);
/* result */
*data = m;
out:
sock_close(so);
out1:
if (nam) mbuf_freem(nam);
if (mhead) mbuf_freem(mhead);
return error;
}
/*
* Decapsulate. Does the real work and is called from in_gre_input()
* (above) or ipv4_infilter(), Returns an mbuf back if packet is not
* yet processed, and NULL if it needs no further processing.
* proto is the protocol number of the "calling" foo_input() routine.
*/
mbuf_t in_gre_input(mbuf_t m, int hlen)
{
struct greip *gip;
struct gre_softc *sc;
u_int16_t flags;
//static u_int32_t af;
//u_int8_t proto;
//proto = ((struct ip *)mbuf_data(m))->ip_p;
if ((sc = gre_lookup(m, IPPROTO_GRE)) == NULL) {
/* No matching tunnel or tunnel is down. */
return m;
}
/* from here on, we increased the sc->sc_refcnt, so do remember to decrease it before return */
if (mbuf_len(m) < sizeof(struct greip)) {
mbuf_pullup(&m, sizeof(struct greip));
if (m == NULL)
goto done;
}
gip = mbuf_data(m);
//switch (proto) {
// case IPPROTO_GRE:
hlen += sizeof(struct gre_h);
/* process GRE flags as packet can be of variable len */
flags = ntohs(gip->gi_flags);
/* Checksum & Offset are present */
if ((flags & GRE_CP) | (flags & GRE_RP))
hlen += 4;
/* We don't support routing fields (variable length) */
if (flags & GRE_RP)
goto done;
if (flags & GRE_KP)
hlen += 4;
if (flags & GRE_SP)
hlen += 4;
switch (ntohs(gip->gi_ptype)) { /* ethertypes */
case WCCP_PROTOCOL_TYPE:
if (sc->wccp_ver == WCCP_V2)
hlen += 4;
/* FALLTHROUGH */
case ETHERTYPE_IP:
//af = AF_INET;
break;
case ETHERTYPE_IPV6:
//af = AF_INET6;
break;
//case ETHERTYPE_AT:
// af = AF_APPLETALK;
// break;
default:
/* Others not yet supported. */
goto done;
}
// break;
// default:
/* Others not yet supported. */
// goto done;
//}
if (hlen > mbuf_pkthdr_len(m)) { /* not a valid GRE packet */
mbuf_freem(m);
m = NULL;
goto done;
}
/* Unlike NetBSD, in FreeBSD(as well as Darwin) m_adj() adjusts mbuf_pkthdr_len(m) as well */
mbuf_adj(m, hlen);
mbuf_pkthdr_setrcvif(m, sc->sc_ifp);
mbuf_pkthdr_setheader(m, NULL);
//mbuf_pkthdr_setheader(m, &af); /* it's ugly... */
struct ifnet_stat_increment_param incs;
bzero(&incs, sizeof(incs));
incs.packets_in = 1;
incs.bytes_in = mbuf_pkthdr_len(m);
ifnet_input(sc->sc_ifp, m, &incs);
m = NULL; /* ifnet_input() has freed the mbuf */
done:
/* since we got sc->sc_refcnt add by one, we decrease it when done */
gre_sc_release(sc);
return m;
}
/*
* input routine for IPPRPOTO_MOBILE
* This is a little bit diffrent from the other modes, as the
* encapsulating header was not prepended, but instead inserted
* between IP header and payload
*/
mbuf_t in_mobile_input(mbuf_t m, int hlen)
{
#ifdef DEBUG
printf("%s: got packet\n", __FUNCTION__);
#endif
struct ip *ip;
struct mobip_h *mip;
struct gre_softc *sc;
int msiz;
if ((sc = gre_lookup(m, IPPROTO_MOBILE)) == NULL) {
/* No matching tunnel or tunnel is down. */
return m;
}
/* from here on, we increased the sc->sc_refcnt, so do remember to decrease it before return */
if (mbuf_len(m) < sizeof(*mip)) {
mbuf_pullup(&m, sizeof(*mip));
if (m == NULL)
goto done;
}
ip = mbuf_data(m);
mip = mbuf_data(m);
if (ntohs(mip->mh.proto) & MOB_H_SBIT) {
msiz = MOB_H_SIZ_L;
mip->mi.ip_src.s_addr = mip->mh.osrc;
} else
msiz = MOB_H_SIZ_S;
if (mbuf_len(m) < (ip->ip_hl << 2) + msiz) {
mbuf_pullup(&m, (ip->ip_hl << 2) + msiz);
if (m == NULL)
goto done;
ip = mbuf_data(m);
mip = mbuf_data(m);
}
mip->mi.ip_dst.s_addr = mip->mh.odst;
mip->mi.ip_p = (ntohs(mip->mh.proto) >> 8);
if (gre_in_cksum((u_int16_t *)&mip->mh, msiz) != 0) {
mbuf_freem(m);
m = NULL;
goto done;
}
bcopy((caddr_t)(ip) + (ip->ip_hl << 2) + msiz, (caddr_t)(ip) +
(ip->ip_hl << 2), mbuf_len(m) - msiz - (ip->ip_hl << 2));
mbuf_setdata(m, mbuf_data(m), mbuf_len(m) - msiz);
mbuf_pkthdr_adjustlen(m, - msiz);
/*
* On FreeBSD, rip_input() supplies us with ip->ip_len
* already converted into host byteorder and also decreases
* it by the lengh of IP header, however, ip_input() expects
* that this field is in the original format (network byteorder
* and full size of IP packet), so that adjust accordingly.
*/
ip->ip_len = htons(ip->ip_len + sizeof(struct ip) - msiz);
ip->ip_sum = 0;
ip->ip_sum = in_cksum(m, (ip->ip_hl << 2));
mbuf_pkthdr_setrcvif(m, sc->sc_ifp);
mbuf_pkthdr_setheader(m, NULL);
struct ifnet_stat_increment_param incs;
bzero(&incs, sizeof(incs));
incs.packets_in = 1;
incs.bytes_in = mbuf_pkthdr_len(m);
ifnet_input(sc->sc_ifp, m, &incs);
m = NULL; /* ifnet_input() has freed the mbuf */
done:
/* since we got sc->sc_refcnt add by one, we decrease it when done */
gre_sc_release(sc);
return m;
}
