Ethernet: Added force link speed on eth interface via ethtool

- Add --interface/-i and --speed/-s options
- Default link speed to 1000 Mbps when no speed is provided
- Force link speed on eth interface via ethtool
- Update README to document new CLI

Signed-off-by: Vamsee Narapareddi <vnarapar@qti.qualcomm.com>

Author: vnarapar

Runner/suites/Connectivity/Ethernet/README.md

@@ -7,9 +7,15 @@ SPDX-License-Identifier: BSD-3-Clause-Clear
 
 This test case validates the basic functionality of the Ethernet interface (`eth0`) on the device. It checks for:
 
-- Interface presence
+- Interface detection (auto or user-specified)
 - Interface status (UP/DOWN)
 - Basic connectivity via ping to `8.8.8.8`
+- Optional: forcing Ethernet link speed using ethtool
+
+By default, the script:
+
+Auto-detects available Ethernet interfaces if none is specified
+Forces the link speed to 1000 Mbps, full duplex, autoneg off (using ethtool) unless a different speed is provided
 
 ## Usage
 
@@ -29,7 +35,7 @@ scp -r common Runner user@target_device_ip:<Path in device>
 ssh user@target_device_ip
 cd <Path in device>/Runner && ./run-test.sh Ethernet
 # Optional: specify preferred interface (e.g., eth1)
-./run.sh [preferred-interface]
+./run.sh [--interface <preferred-interface>] [--speed <mbps>]
 ```
 
 ## Prerequisites

Runner/suites/Connectivity/Ethernet/run.sh

@@ -37,11 +37,32 @@ rm -f "$res_file" "$summary_file"
 log_info "--------------------------------------------------------------------------"
 log_info "-------------------Starting $TESTNAME Testcase----------------------------"
 
+# CLI parsing: --interface/-i, --speed/-s
+user_iface=""
+speed=""
+
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --interface|-i)
+            user_iface="$2"
+            shift 2
+            ;;
+        --speed|-s)
+            speed="$2"
+            shift 2
+            ;;
+        *)
+            log_warn "Unknown argument: $1 (ignoring)"
+            shift 1
+            ;;
+    esac
+done
+
+[ -z "$speed" ] && speed=1000
+
 # Check for dependencies
 check_dependencies ip ping
 
-# User-specified interface (argument) or all detected
-user_iface="$1"
 if [ -n "$user_iface" ]; then
     ETH_IFACES="$user_iface"
     log_info "User specified interface: $user_iface"
@@ -62,6 +83,15 @@ any_tested=0
 
 for iface in $ETH_IFACES; do
     log_info "---- Testing interface: $iface ----"
+    model=$(get_machine_model)
+
+    if [ "$model" = "Monaco EVK" ] || [ "$model" = "Lemans EVK" ] || [ "$model" = "Lemans Ride Rev3" ] || [ "$model" = "QCS8300 Ride" ] || [ "$model" = "Robotics RB3gen2" ]; then
+        log_info "Setting MAC-PHY speed to $speed for $model"
+        ethtool -s "$iface" speed "$speed" autoneg off duplex full
+		sleep 5
+    else
+        log_info "Skipping force speed; model is '$model'"
+    fi
 
     if ! is_interface_up "$iface"; then
         log_warn "$iface is DOWN, skipping"

Runner/utils/functestlib.sh

@@ -3566,4 +3566,26 @@ get_pid() {
         log_info "Process '$process_name' not found."
         return 1
     fi
+}
+
+get_machine_model() {
+    if [ -r /sys/firmware/devicetree/base/model ]; then
+        raw=`cat /sys/firmware/devicetree/base/model`
+    else
+        log_info "Model not found"
+        return 0
+    fi
+
+    # Strip leading "Qualcomm Technologies, Inc. " if present
+    case "$raw" in
+        "Qualcomm Technologies, Inc. "*)
+            model=`printf '%s\n' "$raw" | sed 's/^Qualcomm Technologies, Inc. //'`
+            ;;
+        *)
+            model="$raw"
+            ;;
+    esac
+
+    printf '%s\n' "$model"
+    return 0
 }