From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 11 Apr 2024 10:27:49 +0200
Subject: Adding upstream version 6.6.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../pktgen/pktgen_bench_xmit_mode_netif_receive.sh | 113 +++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100755 samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh

(limited to 'samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh')

diff --git a/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh b/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
new file mode 100755
index 0000000000..b4328db4a1
--- /dev/null
+++ b/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
@@ -0,0 +1,113 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Benchmark script:
+#  - developed for benchmarking ingress qdisc path
+#
+# Script for injecting packets into RX path of the stack with pktgen
+# "xmit_mode netif_receive".  With an invalid dst_mac this will only
+# measure the ingress code path as packets gets dropped in ip_rcv().
+#
+# This script don't really need any hardware.  It benchmarks software
+# RX path just after NIC driver level.  With bursting is also
+# "removes" the SKB alloc/free overhead.
+#
+# Setup scenarios for measuring ingress qdisc (with invalid dst_mac):
+# ------------------------------------------------------------------
+# (1) no ingress (uses static_key_false(&ingress_needed))
+#
+# (2) ingress on other dev (change ingress_needed and calls
+#     handle_ing() but exit early)
+#
+#  config:  tc qdisc add dev $SOMEDEV handle ffff: ingress
+#
+# (3) ingress on this dev, handle_ing() -> tc_classify()
+#
+#  config:  tc qdisc add dev $DEV handle ffff: ingress
+#
+# (4) ingress on this dev + drop at u32 classifier/action.
+#
+basedir=`dirname $0`
+source ${basedir}/functions.sh
+root_check_run_with_sudo "$@"
+
+# Parameter parsing via include
+source ${basedir}/parameters.sh
+
+# Trap EXIT first
+trap_exit
+
+# Using invalid DST_MAC will cause the packets to get dropped in
+# ip_rcv() which is part of the test
+if [ -z "$DEST_IP" ]; then
+    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
+fi
+[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
+[ -z "$BURST" ] && BURST=1024
+[ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
+if [ -n "$DEST_IP" ]; then
+    validate_addr${IP6} $DEST_IP
+    read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
+fi
+if [ -n "$DST_PORT" ]; then
+    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
+    validate_ports $UDP_DST_MIN $UDP_DST_MAX
+fi
+
+# General cleanup everything since last run
+pg_ctrl "reset"
+
+# Threads are specified with parameter -t value in $THREADS
+for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
+    # The device name is extended with @name, using thread number to
+    # make then unique, but any name will do.
+    dev=${DEV}@${thread}
+
+    # Add remove all other devices and add_device $dev to thread
+    pg_thread $thread "rem_device_all"
+    pg_thread $thread "add_device" $dev
+
+    # Base config of dev
+    pg_set $dev "flag QUEUE_MAP_CPU"
+    pg_set $dev "count $COUNT"
+    pg_set $dev "pkt_size $PKT_SIZE"
+    pg_set $dev "delay $DELAY"
+    pg_set $dev "flag NO_TIMESTAMP"
+
+    # Destination
+    pg_set $dev "dst_mac $DST_MAC"
+    pg_set $dev "dst${IP6}_min $DST_MIN"
+    pg_set $dev "dst${IP6}_max $DST_MAX"
+
+    if [ -n "$DST_PORT" ]; then
+	# Single destination port or random port range
+	pg_set $dev "flag UDPDST_RND"
+	pg_set $dev "udp_dst_min $UDP_DST_MIN"
+	pg_set $dev "udp_dst_max $UDP_DST_MAX"
+    fi
+
+    # Inject packet into RX path of stack
+    pg_set $dev "xmit_mode netif_receive"
+
+    # Burst allow us to avoid measuring SKB alloc/free overhead
+    pg_set $dev "burst $BURST"
+done
+
+# Run if user hits control-c
+function print_result() {
+    # Print results
+    for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
+        dev=${DEV}@${thread}
+        echo "Device: $dev"
+        cat /proc/net/pktgen/$dev | grep -A2 "Result:"
+    done
+}
+# trap keyboard interrupt (Ctrl-C)
+trap true SIGINT
+
+# start_run
+echo "Running... ctrl^C to stop" >&2
+pg_ctrl "start"
+echo "Done" >&2
+
+print_result
-- 
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