Inet4::Inet4(hw::Nic& nic)
: ip4_addr_(IP4::INADDR_ANY),
netmask_(IP4::INADDR_ANY),
router_(IP4::INADDR_ANY),
dns_server(IP4::INADDR_ANY),
nic_(nic), eth_(nic), arp_(*this), ip4_(*this),
icmp_(*this), udp_(*this), tcp_(*this), dns(*this),
bufstore_(nic.bufstore()), MTU_(nic.MTU())
{
INFO("Inet4","Bringing up a IPv4 stack");
Ensures(sizeof(IP4::addr) == 4);
/** Upstream delegates */
auto eth_bottom(upstream::from<Ethernet,&Ethernet::bottom>(eth_));
auto arp_bottom(upstream::from<Arp,&Arp::bottom>(arp_));
auto ip4_bottom(upstream::from<IP4,&IP4::bottom>(ip4_));
auto icmp4_bottom(upstream::from<ICMPv4,&ICMPv4::bottom>(icmp_));
auto udp4_bottom(upstream::from<UDP,&UDP::bottom>(udp_));
auto tcp_bottom(upstream::from<TCP,&TCP::bottom>(tcp_));
/** Upstream wiring */
// Packets available
nic.on_transmit_queue_available(
transmit_avail_delg::from<Inet4, &Inet4::process_sendq>(*this));
// Phys -> Eth (Later, this will be passed through router)
nic.set_linklayer_out(eth_bottom);
// Eth -> Arp
eth_.set_arp_handler(arp_bottom);
// Eth -> IP4
eth_.set_ip4_handler(ip4_bottom);
// IP4 -> ICMP
ip4_.set_icmp_handler(icmp4_bottom);
// IP4 -> UDP
ip4_.set_udp_handler(udp4_bottom);
// IP4 -> TCP
ip4_.set_tcp_handler(tcp_bottom);
/** Downstream delegates */
// retreive drivers delegate virtually, instead of setting it to a virtual call
auto phys_top(nic.get_physical_out());
//auto phys_top(downstream
// ::from<hw::Nic,&hw::Nic::transmit>(nic));
auto eth_top(downstream
::from<Ethernet,&Ethernet::transmit>(eth_));
auto arp_top(downstream
::from<Arp,&Arp::transmit>(arp_));
auto ip4_top(downstream
::from<IP4,&IP4::transmit>(ip4_));
/** Downstream wiring. */
// ICMP -> IP4
icmp_.set_network_out(ip4_top);
// UDP4 -> IP4
udp_.set_network_out(ip4_top);
// TCP -> IP4
tcp_.set_network_out(ip4_top);
// IP4 -> Arp
ip4_.set_linklayer_out(arp_top);
// Arp -> Eth
arp_.set_linklayer_out(eth_top);
// Eth -> Phys
assert(phys_top);
eth_.set_physical_out(phys_top);
}
Inet::Inet(hw::Nic& nic)
: ip4_addr_(IP4::ADDR_ANY),
netmask_(IP4::ADDR_ANY),
gateway_(IP4::ADDR_ANY),
dns_server_(IP4::ADDR_ANY),
nic_(nic), arp_(*this), ip4_(*this), ip6_(*this),
icmp_(*this), icmp6_(*this), udp_(*this), tcp_(*this), dns_(*this),
domain_name_{},
MTU_(nic.MTU())
{
static_assert(sizeof(IP4::addr) == 4, "IPv4 addresses must be 32-bits");
/** SMP related **/
this->cpu_id = SMP::cpu_id();
INFO("Inet", "Bringing up %s on CPU %d",
ifname().c_str(), this->get_cpu_id());
/** Upstream delegates */
auto arp_bottom(upstream{arp_, &Arp::receive});
auto ip4_bottom(upstream_ip{ip4_, &IP4::receive});
auto ip6_bottom(upstream_ip{ip6_, &IP6::receive});
auto icmp4_bottom(upstream{icmp_, &ICMPv4::receive});
auto icmp6_bottom(upstream{icmp6_, &ICMPv6::receive});
auto udp4_bottom(upstream{udp_, &UDP::receive});
auto tcp_bottom(upstream{tcp_, &TCP::receive});
auto tcp6_bottom(upstream{tcp_, &TCP::receive6});
/** Upstream wiring */
// Packets available
nic.on_transmit_queue_available({this, &Inet::process_sendq});
// Link -> Arp
nic_.set_arp_upstream(arp_bottom);
// Link -> IP4
nic_.set_ip4_upstream(ip4_bottom);
// Link -> IP6
nic_.set_ip6_upstream(ip6_bottom);
// IP4 -> ICMP
ip4_.set_icmp_handler(icmp4_bottom);
// IP6 -> ICMP6
ip6_.set_icmp_handler(icmp6_bottom);
// IP4 -> UDP
ip4_.set_udp_handler(udp4_bottom);
// IP4 -> TCP
ip4_.set_tcp_handler(tcp_bottom);
// IP6 -> TCP
ip6_.set_tcp_handler(tcp6_bottom);
/** Downstream delegates */
auto link_top(nic_.create_link_downstream());
auto arp_top(IP4::downstream_arp{arp_, &Arp::transmit});
auto ndp_top(IP6::downstream_ndp{icmp6_, &ICMPv6::ndp_transmit});
auto ip4_top(downstream{ip4_, &IP4::transmit});
auto ip6_top(downstream{ip6_, &IP6::transmit});
/** Downstream wiring. */
// ICMP -> IP4
icmp_.set_network_out(ip4_top);
// ICMPv6 -> IP6
icmp6_.set_network_out(ip6_top);
// UDP4 -> IP4
udp_.set_network_out(ip4_top);
// TCP -> IP4
tcp_.set_network_out(ip4_top);
// TCP -> IP6
tcp_.set_network_out6(ip6_top);
// IP4 -> Arp
ip4_.set_linklayer_out(arp_top);
// IP6 -> Ndp
ip6_.set_linklayer_out(ndp_top);
// NDP -> Link
icmp6_.set_ndp_linklayer_out(link_top);
// UDP6 -> IP6
// udp6->set_network_out(ip6_top);
// TCP6 -> IP6
// tcp6->set_network_out(ip6_top);
// Arp -> Link
assert(link_top);
arp_.set_linklayer_out(link_top);
#ifndef INCLUDEOS_SINGLE_THREADED
// move this nework stack automatically
// to the current CPU if its not 0
if (SMP::cpu_id() != 0) {
this->move_to_this_cpu();
}
#endif
}