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polished some rough edges

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This commit is contained in:
Joseph Henry
2016-10-20 17:26:37 -07:00
parent 3f69aba15f
commit f6a6f991e7
10 changed files with 360 additions and 650 deletions
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400
src/SDK_EthernetTap.cpp
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@@ -42,8 +42,9 @@
#include "SDK_Debug.h"
#if defined(SDK_LWIP)
#include "SDK_lwip.hpp"
#include "SDK_lwIP.hpp"
#elif defined(SDK_PICOTCP)
#include "SDK_picoTCP.hpp"
#include "pico_stack.h"
#include "pico_ipv4.h"
#include "pico_icmp4.h"
@@ -54,8 +55,6 @@
#include "SDK_jip.hpp"
#endif
#include "SDK_pico.hpp"
#include "Utils.hpp"
#include "OSUtils.hpp"
#include "Constants.hpp"
@@ -620,6 +619,9 @@ namespace ZeroTier {
}
/*------------------------------------------------------------------------------
-------------------------------- Tap Service ----------------------------------
------------------------------------------------------------------------------*/
static err_t tapif_init(struct netif *netif)
{
@@ -693,32 +695,29 @@ NetconEthernetTap::NetconEthernetTap(
#if defined(SDK_LWIP)
Utils::snprintf(stackPath,sizeof(stackPath),"%s%sliblwip.so",homePath,ZT_PATH_SEPARATOR_S);
lwipstack = new lwIP_stack(stackPath);
if(!lwipstack) {
DEBUG_ERROR("unable to dynamically load a new instance of (%s) (searched ZeroTier home path)", stackPath);
throw std::runtime_error("");
}
lwipstack->__lwip_init();
#elif defined(SDK_PICOTCP)
Utils::snprintf(stackPath,sizeof(stackPath),"%s%slibpicotcp.so",homePath,ZT_PATH_SEPARATOR_S);
picostack = new picoTCP_stack(stackPath);
if(!picostack) {
DEBUG_ERROR("unable to dynamically load a new instance of (%s) (searched ZeroTier home path)", stackPath);
throw std::runtime_error("");
}
picostack->__pico_stack_init();
#elif defined(SDK_JIP)
Utils::snprintf(stackPath,sizeof(stackPath),"%s%slibjip.so",homePath,ZT_PATH_SEPARATOR_S);
jipstack = new jip_stack(stackPath);
#endif
if(!lwipstack && !picostack && !jipstack) {
DEBUG_ERROR("unable to dynamically load a new instance of (%s) (searched ZeroTier home path)", stackPath);
throw std::runtime_error("");
}
else {
if(lwipstack)
lwipstack->__lwip_init();
if(picostack)
picostack->__pico_stack_init();
//if(jipstack)
// jipstack->__jip_init();
_unixListenSocket = _phy.unixListen(sockPath,(void *)this);
DEBUG_INFO("tap initialized on: path=%s", sockPath);
if (!_unixListenSocket)
DEBUG_ERROR("unable to bind to: path=%s", sockPath);
_thread = Thread::start(this);
}
_unixListenSocket = _phy.unixListen(sockPath,(void *)this);
DEBUG_INFO("tap initialized on: path=%s", sockPath);
if (!_unixListenSocket)
DEBUG_ERROR("unable to bind to: path=%s", sockPath);
_thread = Thread::start(this);
}
NetconEthernetTap::~NetconEthernetTap()
@@ -728,7 +727,15 @@ NetconEthernetTap::~NetconEthernetTap()
_phy.whack(); // TODO: Rationale?
Thread::join(_thread);
_phy.close(_unixListenSocket,false);
delete lwipstack;
#if defined(SDK_LWIP)
delete lwipstack;
#endif
#if defined(SDK_PICOTCP)
delete picostack;
#endif
#if defined(SDK_JIP)
delete jipstack;
#endif
}
void NetconEthernetTap::setEnabled(bool en)
@@ -743,69 +750,69 @@ bool NetconEthernetTap::enabled() const
void NetconEthernetTap::lwIP_init_interface(const InetAddress &ip)
{
#if defined(SDK_LWIP)
DEBUG_INFO("local_addr=%s", ip.toString().c_str());
Mutex::Lock _l(_ips_m);
// SIP-1
// Initialize network stack's interface, assign addresses
if (std::find(_ips.begin(),_ips.end(),ip) == _ips.end()) {
_ips.push_back(ip);
std::sort(_ips.begin(),_ips.end());
/*
#if defined(SDK_IPV4)
if (ip.isV4()) {
DEBUG_INFO("IPV4");
// Set IP
static ip4_addr ipaddr, netmask, gw;
IP4_ADDR(&gw,127,0,0,1);
ipaddr.addr = *((u32_t *)ip.rawIpData());
netmask.addr = *((u32_t *)ip.netmask().rawIpData());
// Set up the lwip-netif for LWIP's sake
// convert address
static ip_addr_t ipaddr, netmask, gw;
IP4_ADDR((ip4_addr_t *)&gw,127,0,0,1);
((ip4_addr_t *)&ipaddr)->addr = *((u32_t *)ip.rawIpData());
((ip4_addr_t *)&netmask)->addr = *((u32_t *)ip.netmask().rawIpData());
// initialize netif
lwipstack->__netif_add(&interface,&ipaddr, &netmask, &gw, NULL, tapif_init, lwipstack->_ethernet_input);
interface.state = this;
interface.output = lwipstack->_etharp_output;
_mac.copyTo(interface.hwaddr, 6);
interface.mtu = _mtu;
interface.name[0] = 't';
interface.name[1] = 'p';
interface.name[0] = 'l';
interface.name[1] = 'w';
interface.name[2] = '4';
interface.linkoutput = low_level_output;
interface.hwaddr_len = 6;
interface.flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_IGMP;
lwipstack->__netif_set_default(&interface);
lwipstack->__netif_set_up(&interface);
}
*/
/*
if(ip.isV6())
{
DEBUG_INFO("IPV6");
static ip6_addr_t addr6;
IP6_ADDR2(&addr6, 0xfd56, 0x5799, 0xd8f6, 0x1238, 0x8c99, 0x93b4, 0x9d8e, 0x24f6);
#endif
#if defined(SDK_IPV6)
if(ip.isV6()) {
DEBUG_INFO("IPV6");
// convert address
static ip6_addr_t addr6;
struct sockaddr_in6 in6;
memcpy(in6.sin6_addr.s6_addr,ip.rawIpData(),16);
in6_to_ip6((ip6_addr *)&addr6, &in6);
// initialize netif
interface6.mtu = _mtu;
interface6.name[0] = 't';
interface6.name[1] = 'p';
interface6.name[0] = 'l';
interface6.name[1] = 'w';
interface6.name[2] = '6';
interface6.hwaddr_len = 6;
interface6.linkoutput = low_level_output;
interface6.ip6_autoconfig_enabled = 1;
_mac.copyTo(interface6.hwaddr, interface6.hwaddr_len);
lwipstack->__netif_create_ip6_linklocal_address(&interface6, 1);
lwipstack->__netif_add(&interface6, NULL, tapif_init, lwipstack->_ethernet_input);
lwipstack->__netif_set_default(&interface6);
lwipstack->__netif_set_up(&interface6);
netif_ip6_addr_set_state(&interface6, 1, IP6_ADDR_TENTATIVE);
ip6_addr_copy(ip_2_ip6(interface6.ip6_addr[1]), addr6);
interface6.output_ip6 = lwipstack->_ethip6_output;
interface6.state = this;
interface6.flags = NETIF_FLAG_LINK_UP | NETIF_FLAG_UP;
}
*/
}
#endif
}
#endif
}
void NetconEthernetTap::jip_init_interface(const InetAddress &ip)
@@ -816,8 +823,8 @@ void NetconEthernetTap::jip_init_interface(const InetAddress &ip)
bool NetconEthernetTap::addIp(const InetAddress &ip)
{
picotap = this;
// SIP-3
// Initialize a new interface in the stack, assign an address
// SIP-1
// Initialize network stack's interface, assign addresses
#if defined(SDK_LWIP)
lwIP_init_interface(ip);
#elif defined(SDK_PICOTCP)
@@ -850,43 +857,52 @@ std::vector<InetAddress> NetconEthernetTap::ips() const
void NetconEthernetTap::lwIP_rx(const MAC &from,const MAC &to,unsigned int etherType,const void *data,unsigned int len)
{
DEBUG_INFO();
struct pbuf *p,*q;
if (!_enabled)
return;
struct eth_hdr ethhdr;
from.copyTo(ethhdr.src.addr, 6);
to.copyTo(ethhdr.dest.addr, 6);
ethhdr.type = Utils::hton((uint16_t)etherType);
p = lwipstack->__pbuf_alloc(PBUF_RAW, len+sizeof(struct eth_hdr), PBUF_POOL);
if (p != NULL) {
const char *dataptr = reinterpret_cast<const char *>(data);
// First pbuf gets ethernet header at start
q = p;
if (q->len < sizeof(ethhdr)) {
DEBUG_ERROR("dropped packet: first pbuf smaller than ethernet header");
#if defined(SDK_LWIP)
DEBUG_INFO();
struct pbuf *p,*q;
if (!_enabled)
return;
struct eth_hdr ethhdr;
from.copyTo(ethhdr.src.addr, 6);
to.copyTo(ethhdr.dest.addr, 6);
ethhdr.type = Utils::hton((uint16_t)etherType);
p = lwipstack->__pbuf_alloc(PBUF_RAW, len+sizeof(struct eth_hdr), PBUF_POOL);
if (p != NULL) {
const char *dataptr = reinterpret_cast<const char *>(data);
// First pbuf gets ethernet header at start
q = p;
if (q->len < sizeof(ethhdr)) {
DEBUG_ERROR("dropped packet: first pbuf smaller than ethernet header");
return;
}
memcpy(q->payload,&ethhdr,sizeof(ethhdr));
memcpy((char*)q->payload + sizeof(ethhdr),dataptr,q->len - sizeof(ethhdr));
dataptr += q->len - sizeof(ethhdr);
// Remaining pbufs (if any) get rest of data
while ((q = q->next)) {
memcpy(q->payload,dataptr,q->len);
dataptr += q->len;
}
}
else {
DEBUG_ERROR("dropped packet: no pbufs available");
return;
}
memcpy(q->payload,&ethhdr,sizeof(ethhdr));
memcpy((char*)q->payload + sizeof(ethhdr),dataptr,q->len - sizeof(ethhdr));
dataptr += q->len - sizeof(ethhdr);
// Remaining pbufs (if any) get rest of data
while ((q = q->next)) {
memcpy(q->payload,dataptr,q->len);
dataptr += q->len;
{
#if defined(SDK_IPV6)
if(interface6.input(p, &interface6) != ERR_OK) {
DEBUG_ERROR("error while feeding frame into stack interface6");
}
#endif
#if defined(SDK_IPV4)
if(interface.input(p, &interface) != ERR_OK) {
DEBUG_ERROR("error while feeding frame into stack interface");
}
#endif
}
}
else {
DEBUG_ERROR("dropped packet: no pbufs available");
return;
}
{
if(interface6.input(p, &interface6) != ERR_OK) {
DEBUG_ERROR("error while RX of packet (netif->input)");
}
}
#endif
}
@@ -942,82 +958,81 @@ void NetconEthernetTap::scanMulticastGroups(std::vector<MulticastGroup> &added,s
void NetconEthernetTap::lwIP_loop()
{
DEBUG_INFO();
uint64_t prev_tcp_time = 0, prev_status_time = 0, prev_discovery_time = 0;
// Main timer loop
while (_run) {
uint64_t now = OSUtils::now();
uint64_t since_tcp = now - prev_tcp_time;
uint64_t since_discovery = now - prev_discovery_time;
uint64_t since_status = now - prev_status_time;
uint64_t tcp_remaining = ZT_LWIP_TCP_TIMER_INTERVAL;
uint64_t discovery_remaining = 5000;
#if defined(SDK_LWIP)
DEBUG_INFO();
uint64_t prev_tcp_time = 0, prev_status_time = 0, prev_discovery_time = 0;
// Main timer loop
while (_run) {
uint64_t now = OSUtils::now();
uint64_t since_tcp = now - prev_tcp_time;
uint64_t since_discovery = now - prev_discovery_time;
uint64_t since_status = now - prev_status_time;
uint64_t tcp_remaining = ZT_LWIP_TCP_TIMER_INTERVAL;
uint64_t discovery_remaining = 5000;
#if defined(LWIP_IPV6)
#define DISCOVERY_INTERVAL 1000 // fuck you
#elif
#define DISCOVERY_INTERVAL ARP_TMR_INTERVAL
#endif
// Connection prunning
if (since_status >= STATUS_TMR_INTERVAL) {
prev_status_time = now;
for(size_t i=0;i<_Connections.size();++i) {
if(!_Connections[i]->sock || _Connections[i]->type != SOCK_STREAM)
continue;
int fd = _phy.getDescriptor(_Connections[i]->sock);
// DEBUG_INFO(" tap_thread(): tcp\\jobs = {%d, %d}\n", _Connection.size(), jobmap.size());
// If there's anything on the RX buf, set to notify in case we stalled
if(_Connections[i]->rxsz > 0)
_phy.setNotifyWritable(_Connections[i]->sock, true);
fcntl(fd, F_SETFL, O_NONBLOCK);
unsigned char tmpbuf[BUF_SZ];
ssize_t n = read(fd,&tmpbuf,BUF_SZ);
if(_Connections[i]->TCP_pcb->state == SYN_SENT) {
DEBUG_EXTRA(" should finish or be removed soon, sock=%p, state=SYN_SENT",
(void*)&(_Connections[i]->sock));
}
if((n < 0 && errno != EAGAIN) || (n == 0 && errno == EAGAIN)) {
//DEBUG_INFO(" closing sock (%x)", (void*)_Connections[i]->sock);
closeConnection(_Connections[i]->sock);
} else if (n > 0) {
DEBUG_INFO(" data read during connection check (%ld bytes)", n);
phyOnUnixData(_Connections[i]->sock,_phy.getuptr(_Connections[i]->sock),&tmpbuf,n);
}
}
}
// Main TCP/ETHARP timer section
if (since_tcp >= ZT_LWIP_TCP_TIMER_INTERVAL) {
prev_tcp_time = now;
lwipstack->__tcp_tmr();
// FIXME: could be removed or refactored?
// Makeshift poll
for(size_t i=0;i<_Connections.size();++i) {
if(_Connections[i]->txsz > 0){
handleWrite(_Connections[i]);
}
}
} else {
tcp_remaining = ZT_LWIP_TCP_TIMER_INTERVAL - since_tcp;
}
if (since_discovery >= DISCOVERY_INTERVAL) {
prev_discovery_time = now;
//#if defined(LWIP_IPV4)
// DEBUG_EXTRA("etharp_tmr");
// lwipstack->__etharp_tmr();
//#endif
#if defined(LWIP_IPV6)
DEBUG_EXTRA("nd6_tmr");
lwipstack->__nd6_tmr();
#define DISCOVERY_INTERVAL 1000 // fuck you
#elif
#define DISCOVERY_INTERVAL ARP_TMR_INTERVAL
#endif
} else {
discovery_remaining = DISCOVERY_INTERVAL - since_discovery;
// Connection prunning
if (since_status >= STATUS_TMR_INTERVAL) {
prev_status_time = now;
for(size_t i=0;i<_Connections.size();++i) {
if(!_Connections[i]->sock || _Connections[i]->type != SOCK_STREAM)
continue;
int fd = _phy.getDescriptor(_Connections[i]->sock);
// DEBUG_INFO(" tap_thread(): tcp\\jobs = {%d, %d}\n", _Connection.size(), jobmap.size());
// If there's anything on the RX buf, set to notify in case we stalled
if(_Connections[i]->rxsz > 0)
_phy.setNotifyWritable(_Connections[i]->sock, true);
fcntl(fd, F_SETFL, O_NONBLOCK);
unsigned char tmpbuf[BUF_SZ];
ssize_t n = read(fd,&tmpbuf,BUF_SZ);
if(_Connections[i]->TCP_pcb->state == SYN_SENT) {
DEBUG_EXTRA(" should finish or be removed soon, sock=%p, state=SYN_SENT",
(void*)&(_Connections[i]->sock));
}
if((n < 0 && errno != EAGAIN) || (n == 0 && errno == EAGAIN)) {
//DEBUG_INFO(" closing sock (%x)", (void*)_Connections[i]->sock);
closeConnection(_Connections[i]->sock);
} else if (n > 0) {
DEBUG_INFO(" data read during connection check (%ld bytes)", n);
phyOnUnixData(_Connections[i]->sock,_phy.getuptr(_Connections[i]->sock),&tmpbuf,n);
}
}
}
// Main TCP/ETHARP timer section
if (since_tcp >= ZT_LWIP_TCP_TIMER_INTERVAL) {
prev_tcp_time = now;
lwipstack->__tcp_tmr();
// FIXME: could be removed or refactored?
// Makeshift poll
for(size_t i=0;i<_Connections.size();++i) {
if(_Connections[i]->txsz > 0){
handleWrite(_Connections[i]);
}
}
} else {
tcp_remaining = ZT_LWIP_TCP_TIMER_INTERVAL - since_tcp;
}
if (since_discovery >= DISCOVERY_INTERVAL) {
prev_discovery_time = now;
#if defined(SDK_IPV4)
lwipstack->__etharp_tmr();
#endif
#if defined(SDK_IPV6)
lwipstack->__nd6_tmr();
#endif
} else {
discovery_remaining = DISCOVERY_INTERVAL - since_discovery;
}
_phy.poll((unsigned long)std::min(tcp_remaining,discovery_remaining));
}
_phy.poll((unsigned long)std::min(tcp_remaining,discovery_remaining));
}
lwipstack->close();
lwipstack->close();
#endif
}
void NetconEthernetTap::jip_loop()
@@ -1397,6 +1412,8 @@ void NetconEthernetTap::unloadRPC(void *data, pid_t &pid, pid_t &tid,
--------------------------------- LWIP callbacks -------------------------------
------------------------------------------------------------------------------*/
#if defined(SDK_LWIP)
err_t NetconEthernetTap::nc_accept(void *arg, struct tcp_pcb *newPCB, err_t err)
{
DEBUG_ATTN("pcb=%p", (void*)&newPCB);
@@ -1670,6 +1687,8 @@ void NetconEthernetTap::nc_err(void *arg, err_t err)
l->tap->closeConnection(l->conn);
}
#endif // SDK_LWIP
/*------------------------------------------------------------------------------
----------------------------- RPC Handler functions ----------------------------
------------------------------------------------------------------------------*/
@@ -1713,13 +1732,6 @@ void NetconEthernetTap::handleBind(PhySocket *sock, PhySocket *rpcSock, void **u
// lwIP
#if defined(SDK_LWIP)
struct sockaddr_in *rawAddr = (struct sockaddr_in *) &bind_rpc->addr;
int err, port = lwipstack->__lwip_ntohs(rawAddr->sin_port);
ip_addr_t connAddr;
static ip6_addr_t ba;
IP6_ADDR2(&ba, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0);
if(!_ips.size()) {
// We haven't been given an address yet. Binding at this stage is premature
DEBUG_ERROR("cannot bind yet. ZT address hasn't been provided");
@@ -1727,19 +1739,34 @@ void NetconEthernetTap::handleBind(PhySocket *sock, PhySocket *rpcSock, void **u
return;
}
ip_addr_t ba;
char addrstr[INET6_ADDRSTRLEN];
struct sockaddr_in6 *rawAddr = (struct sockaddr_in6 *) &bind_rpc->addr;
struct sockaddr *addr = (struct sockaddr*)rawAddr;
if(addr->sa_family == AF_INET) {
struct sockaddr_in *connaddr = (struct sockaddr_in *)addr;
inet_ntop(AF_INET, &(connaddr->sin_addr), addrstr, INET_ADDRSTRLEN);
sprintf(addrstr, "%s:%d", addrstr, lwipstack->__lwip_ntohs(connaddr->sin_port));
}
if(addr->sa_family == AF_INET6) {
struct sockaddr_in6 *connaddr6 = (struct sockaddr_in6 *)addr;
inet_ntop(AF_INET6, &(connaddr6->sin6_addr), addrstr, INET6_ADDRSTRLEN);
sprintf(addrstr, "%s:%d", addrstr, lwipstack->__lwip_ntohs(connaddr6->sin6_port));
}
DEBUG_INFO("addr=%s", addrstr);
int err, port = lwipstack->__lwip_ntohs(rawAddr->sin6_port);
// ipv4
#if defined(SDK_IPV4)
//ip4_addr_t ba;
if(addr->sa_family == AF_INET) {
struct sockaddr_in *connaddr = (struct sockaddr_in *)addr;
inet_ntop(AF_INET, &(connaddr->sin_addr), addrstr, INET_ADDRSTRLEN);
sprintf(addrstr, "%s:%d", addrstr, lwipstack->__lwip_ntohs(connaddr->sin_port));
}
#endif
// ipv6
#if defined(SDK_IPV6)
//ip6_addr_t ba;
struct sockaddr_in6 *in6 = (struct sockaddr_in6*)&bind_rpc->addr;
in6_to_ip6((ip6_addr *)&ba, in6);
if(addr->sa_family == AF_INET6) {
struct sockaddr_in6 *connaddr6 = (struct sockaddr_in6 *)addr;
inet_ntop(AF_INET6, &(connaddr6->sin6_addr), addrstr, INET6_ADDRSTRLEN);
sprintf(addrstr, "%s:%d", addrstr, lwipstack->__lwip_ntohs(connaddr6->sin6_port));
}
#endif
Connection *conn = getConnection(sock);
DEBUG_ATTN(" sock=%p, fd=%d, port=%d", (void*)&sock, bind_rpc->fd, port);
@@ -1748,7 +1775,7 @@ void NetconEthernetTap::handleBind(PhySocket *sock, PhySocket *rpcSock, void **u
#if defined(__ANDROID__)
err = lwipstack->__udp_bind(conn->UDP_pcb, NULL, port);
#else
// err = lwipstack->__udp_bind(conn->UDP_pcb, &ba, port);
err = lwipstack->__udp_bind(conn->UDP_pcb, (const ip_addr_t *)&ba, port);
#endif
if(err == ERR_USE) // port in use
sendReturnValue(rpcSock, -1, EADDRINUSE);
@@ -1764,7 +1791,7 @@ void NetconEthernetTap::handleBind(PhySocket *sock, PhySocket *rpcSock, void **u
}
else if (conn->type == SOCK_STREAM) {
if(conn->TCP_pcb->state == CLOSED){
err = lwipstack->__tcp_bind(conn->TCP_pcb, &ba, port);
err = lwipstack->__tcp_bind(conn->TCP_pcb, (const ip_addr_t *)&ba, port);
if(err != ERR_OK) {
DEBUG_ERROR("err=%d", err);
if(err == ERR_USE)
@@ -1840,6 +1867,7 @@ void NetconEthernetTap::handleListen(PhySocket *sock, PhySocket *rpcSock, void *
Connection * NetconEthernetTap::handleSocketProxy(PhySocket *sock, int socket_type)
{
/*
Connection *conn = getConnection(sock);
if(!conn){
DEBUG_ERROR("unable to locate Connection object for this PhySocket sock=%p", (void*)&sock);
@@ -1869,6 +1897,7 @@ Connection * NetconEthernetTap::handleSocketProxy(PhySocket *sock, int socket_ty
return conn;
}
DEBUG_ERROR(" memory not available for new PCB");
*/
return NULL;
}
@@ -1919,6 +1948,7 @@ Connection * NetconEthernetTap::handleSocket(PhySocket *sock, void **uptr, struc
int NetconEthernetTap::handleConnectProxy(PhySocket *sock, struct sockaddr_in *rawAddr)
{
/*
DEBUG_ATTN("sock=%p", (void*)&sock);
Mutex::Lock _l(_tcpconns_m);
int port = rawAddr->sin_port;
@@ -1977,17 +2007,16 @@ int NetconEthernetTap::handleConnectProxy(PhySocket *sock, struct sockaddr_in *r
return -1;
}
if(err == ERR_MEM) {
/* Can occur for the following reasons: tcp_enqueue_flags()
// Can occur for the following reasons: tcp_enqueue_flags()
1) tcp_enqueue_flags is always called with either SYN or FIN in flags.
We need one available snd_buf byte to do that.
This means we can't send FIN while snd_buf==0. A better fix would be to
not include SYN and FIN sequence numbers in the snd_buf count.
// 1) tcp_enqueue_flags is always called with either SYN or FIN in flags.
// We need one available snd_buf byte to do that.
// This means we can't send FIN while snd_buf==0. A better fix would be to
// not include SYN and FIN sequence numbers in the snd_buf count.
2) Cannot allocate new pbuf
3) Cannot allocate new TCP segment
// 2) Cannot allocate new pbuf
// 3) Cannot allocate new TCP segment
*/
errno = EAGAIN; // TODO: Doesn't describe the problem well, but closest match
return -1;
}
@@ -2010,6 +2039,7 @@ int NetconEthernetTap::handleConnectProxy(PhySocket *sock, struct sockaddr_in *r
errno = EBADF;
return -1;
}
*/
return -1;
}