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https://github.com/RGBCube/serenity
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Kernel+Userland: Expose list of network adapters through /proc/netadapters.
Added a simple /bin/ifconfig program that just pretty-prints that file. :^)
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264890bfc3
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6 changed files with 69 additions and 0 deletions
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@ -9,6 +9,7 @@
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#include <Kernel/FileSystem/Custody.h>
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#include <Kernel/FileSystem/FileDescription.h>
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#include <Kernel/FileSystem/VirtualFileSystem.h>
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#include <Kernel/Net/NetworkAdapter.h>
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#include <Kernel/PCI.h>
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#include <Kernel/VM/MemoryManager.h>
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#include <Kernel/kmalloc.h>
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@ -40,6 +41,7 @@ enum ProcFileType {
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FI_Root_dmesg,
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FI_Root_pci,
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FI_Root_uptime,
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FI_Root_netadapters,
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FI_Root_self, // symlink
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FI_Root_sys, // directory
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__FI_Root_End,
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@ -251,6 +253,19 @@ ByteBuffer procfs$uptime(InodeIdentifier)
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return builder.to_byte_buffer();
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}
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ByteBuffer procfs$netadapters(InodeIdentifier)
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{
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StringBuilder builder;
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NetworkAdapter::for_each([&builder](auto& adapter) {
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builder.appendf("%s,%s,%s,%s\n",
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adapter.name().characters(),
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adapter.class_name(),
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adapter.mac_address().to_string().characters(),
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adapter.ipv4_address().to_string().characters());
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});
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return builder.to_byte_buffer();
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}
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ByteBuffer procfs$pid_vmo(InodeIdentifier identifier)
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{
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auto handle = ProcessInspectionHandle::from_pid(to_pid(identifier));
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@ -1098,6 +1113,7 @@ ProcFS::ProcFS()
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m_entries[FI_Root_self] = { "self", FI_Root_self, procfs$self };
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m_entries[FI_Root_pci] = { "pci", FI_Root_pci, procfs$pci };
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m_entries[FI_Root_uptime] = { "uptime", FI_Root_uptime, procfs$uptime };
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m_entries[FI_Root_netadapters] = { "netadapters", FI_Root_netadapters, procfs$netadapters };
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m_entries[FI_Root_sys] = { "sys", FI_Root_sys };
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m_entries[FI_PID_vm] = { "vm", FI_PID_vm, procfs$pid_vm };
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@ -107,6 +107,9 @@ E1000NetworkAdapter::E1000NetworkAdapter(PCI::Address pci_address, byte irq)
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, m_pci_address(pci_address)
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{
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s_the = this;
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set_interface_name("e1k");
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kprintf("E1000: Found at PCI address %b:%b:%b\n", pci_address.bus(), pci_address.slot(), pci_address.function());
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enable_bus_mastering(m_pci_address);
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@ -10,6 +10,7 @@ LoopbackAdapter& LoopbackAdapter::the()
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LoopbackAdapter::LoopbackAdapter()
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{
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set_interface_name("loop");
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set_ipv4_address({ 127, 0, 0, 1 });
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}
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@ -14,6 +14,13 @@ static Lockable<HashTable<NetworkAdapter*>>& all_adapters()
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return *table;
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}
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void NetworkAdapter::for_each(Function<void(NetworkAdapter&)> callback)
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{
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LOCKER(all_adapters().lock());
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for (auto& it : all_adapters().resource())
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callback(*it);
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}
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NetworkAdapter* NetworkAdapter::from_ipv4_address(const IPv4Address& address)
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{
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LOCKER(all_adapters().lock());
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@ -90,6 +97,12 @@ void NetworkAdapter::set_ipv4_address(const IPv4Address& address)
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m_ipv4_address = address;
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}
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void NetworkAdapter::set_interface_name(const StringView& basename)
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{
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// FIXME: Find a unique name for this interface, starting with $basename.
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m_name = String::format("%s0", basename.characters());
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}
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bool PacketQueueAlarm::is_ringing() const
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{
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return m_adapter.has_queued_packets();
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@ -1,6 +1,7 @@
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#pragma once
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#include <AK/ByteBuffer.h>
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#include <AK/Function.h>
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#include <AK/SinglyLinkedList.h>
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#include <AK/Types.h>
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#include <Kernel/Alarm.h>
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@ -26,10 +27,13 @@ private:
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class NetworkAdapter {
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public:
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static void for_each(Function<void(NetworkAdapter&)>);
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static NetworkAdapter* from_ipv4_address(const IPv4Address&);
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virtual ~NetworkAdapter();
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virtual const char* class_name() const = 0;
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const String& name() const { return m_name; }
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MACAddress mac_address() { return m_mac_address; }
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IPv4Address ipv4_address() const { return m_ipv4_address; }
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@ -46,6 +50,7 @@ public:
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protected:
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NetworkAdapter();
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void set_interface_name(const StringView& basename);
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void set_mac_address(const MACAddress& mac_address) { m_mac_address = mac_address; }
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virtual void send_raw(const byte*, int) = 0;
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void did_receive(const byte*, int);
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@ -55,4 +60,5 @@ private:
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IPv4Address m_ipv4_address;
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PacketQueueAlarm m_packet_queue_alarm;
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SinglyLinkedList<ByteBuffer> m_packet_queue;
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String m_name;
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};
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30
Userland/ifconfig.cpp
Normal file
30
Userland/ifconfig.cpp
Normal file
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@ -0,0 +1,30 @@
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#include <LibCore/CFile.h>
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#include <stdio.h>
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int main(int argc, char** argv)
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{
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UNUSED_PARAM(argc);
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UNUSED_PARAM(argv);
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CFile file("/proc/netadapters");
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if (!file.open(CIODevice::ReadOnly)) {
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fprintf(stderr, "Error: %s\n", file.error_string());
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return 1;
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}
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for (;;) {
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auto line = file.read_line(1024);
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if (line.is_null())
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break;
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auto parts = String::copy(line, Chomp).split(',');
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if (parts.size() < 4)
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continue;
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printf("%s:\n", parts[0].characters());
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printf(" mac: %s\n", parts[2].characters());
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printf(" ipv4: %s\n", parts[3].characters());
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printf(" class: %s\n", parts[1].characters());
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printf("\n");
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}
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return 0;
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}
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