From 199809caea0bb5436ffa28db524b018eb811b095 Mon Sep 17 00:00:00 2001
From: Pat Riehecky <riehecky@fnal.gov>
Date: Tue, 12 Apr 2022 16:19:46 -0500
Subject: [PATCH] (FACT-1592) A key/value pair for Interface Speed/Duplex

---
 lib/facter/resolvers/linux/networking.rb      | 22 +++++++++++++++++++
 .../facter/resolvers/linux/networking_spec.rb |  6 ++++-
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/lib/facter/resolvers/linux/networking.rb b/lib/facter/resolvers/linux/networking.rb
index a9308db797..865ddd52d9 100644
--- a/lib/facter/resolvers/linux/networking.rb
+++ b/lib/facter/resolvers/linux/networking.rb
@@ -31,6 +31,8 @@ def add_info_from_socket_reader
             @fact_list[:interfaces].keys.each do |interface_name|
               mtu(interface_name, mtu_and_indexes)
               dhcp(interface_name, mtu_and_indexes)
+              linkspeed(interface_name)
+              duplex(interface_name)
 
               @log.debug("Found interface #{interface_name} with #{@fact_list[:interfaces][interface_name]}")
             end
@@ -56,6 +58,26 @@ def parse_ip_command_line(line, mtu_and_indexes)
             mtu_and_indexes[name] = { index: index, mtu: mtu }
           end
 
+          def duplex(interface_name)
+            # not all interfaces support this, wifi for example does not
+            unless interface_name.start_with?('lo')
+              plex = Facter::Util::FileHelper.safe_read("/sys/class/net/#{interface_name}/duplex", nil)
+              @fact_list[:interfaces][interface_name][:duplex] = plex.strip if plex
+            end
+          rescue StandardError
+            nil
+          end
+
+          def linkspeed(interface_name)
+            # not all interfaces support this, wifi for example does not
+            unless interface_name.start_with?('lo')
+              speed = Facter::Util::FileHelper.safe_read("/sys/class/net/#{interface_name}/speed", nil)
+              @fact_list[:interfaces][interface_name][:speed] = speed.strip if speed
+            end
+          rescue StandardError
+            nil
+          end
+
           def mtu(interface_name, mtu_and_indexes)
             mtu = mtu_and_indexes.dig(interface_name, :mtu)
             @fact_list[:interfaces][interface_name][:mtu] = mtu unless mtu.nil?
diff --git a/spec/facter/resolvers/linux/networking_spec.rb b/spec/facter/resolvers/linux/networking_spec.rb
index 8545e2d379..96c44e4d6a 100644
--- a/spec/facter/resolvers/linux/networking_spec.rb
+++ b/spec/facter/resolvers/linux/networking_spec.rb
@@ -277,12 +277,14 @@
               { address: 'fe80::250:56ff:fe9a:8481', netmask: 'ffff:ffff:ffff:ffff::',
                 network: 'fe80::', scope6: 'link', flags: ['permanent'] }
             ],
+            duplex: 'full',
             ip6: 'fe80::250:56ff:fe9a:8481',
             mac: '00:50:56:9a:61:46',
             mtu: 1500,
             netmask6: 'ffff:ffff:ffff:ffff::',
             network6: 'fe80::',
-            scope6: 'link'
+            scope6: 'link',
+            speed: 1000
           }
         }
       end
@@ -295,6 +297,8 @@
         allow(File).to receive(:exist?).with('/proc/net/if_inet6').and_return(true)
         allow(Facter::Util::FileHelper).to receive(:safe_read)
           .with('/proc/net/if_inet6', nil).and_return(load_fixture('proc_net_if_inet6').read)
+        allow(Facter::Util::FileHelper).to receive(:safe_read).with('/sys/class/net/ens160/duplex').and_return('full')
+        allow(Facter::Util::FileHelper).to receive(:safe_read).with('/sys/class/net/ens160/speed').and_return(1000)
       end
 
       it 'returns all the interfaces' do