Merge branch 'pktgen-samples-next'

Juhee Kang says:

====================
samples: pktgen: enhance the ability to print the execution results of samples

This patch series improves the ability to print the execution result of pktgen
samples by adding a line which calls the function before termination and adding
trap SIGINT. Also, this series documents the latest pktgen usage options.

Currently, pktgen samples print the execution result when terminated usually.
However, sample03 is not working properly.

This is results of sample04 and sample03:

    # DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_sample04_many_flows.sh -n 1
    Running... ctrl^C to stop
    Device: eth0@0
    Result: OK: 19(c5+d13) usec, 1 (60byte,0frags)
    51762pps 24Mb/sec (24845760bps) errors: 0

    # DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_sample03_burst_single_flow.sh -n 1
    Running... ctrl^C to stop

Because sample03 doesn't call the function which prints the execution result
when terminated normally, unlike other samples. So the first commit solves
this issue by adding a line which calls the function before termination.

Also, all pktgen samples are able to send infinite messages per thread by
setting the count option to 0, and pktgen is stopped by Ctrl-C. However,
the sample besides sample{3...5} don't work appropriately because Ctrl-C stops
the script, not just pktgen.

This is results of samples:

    # DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_sample04_many_flows.sh -n 0
    Running... ctrl^C to stop
    ^CDevice: eth0@0
    Result: OK: 569657(c569538+d118) usec, 84650 (60byte,0frags)
    148597pps 71Mb/sec (71326560bps) errors: 0

    # DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_sample01_simple.sh -n 0
    Running... ctrl^C to stop
    ^C

    # DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_sample02_multiqueue.sh -n 0
    Running... ctrl^C to stop
    ^C

    # DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_sample06_numa_awared_queue_irq_affinity.sh -n 0
    Running... ctrl^C to stop
    ^C

    # DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_bench_xmit_mode_netif_receive.sh -n 0
    Running... ctrl^C to stop
    ^C

    # DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_bench_xmit_mode_queue_xmit.sh -n 0
    Running... ctrl^C to stop
    ^C

So the second commit solves this issue by adding trap SIGINT. Also, changes
control_c function to print_results to maintain consistency with other samples
on the first commit and second commit.

And current pktgen.rst documentation doesn't add the latest pktgen sample
usage options such as count and IPv6, and so on. Also, the old pktgen
sample scripts are still included in the document. The old scripts were removed
by the commit a4b6ade8 ("samples/pktgen: remove remaining old pktgen
sample scripts").

Thus, the last commit documents the latest pktgen sample usage and removes
old sample scripts. And fixes a minor typo.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/networking/pktgen.rst

@@ -248,26 +248,24 @@ Usage:::
 
   -i : ($DEV)       output interface/device (required)
   -s : ($PKT_SIZE)  packet size
-  -d : ($DEST_IP)   destination IP
+  -d : ($DEST_IP)   destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed
   -m : ($DST_MAC)   destination MAC-addr
+  -p : ($DST_PORT)  destination PORT range (e.g. 433-444) is also allowed
   -t : ($THREADS)   threads to start
+  -f : ($F_THREAD)  index of first thread (zero indexed CPU number)
   -c : ($SKB_CLONE) SKB clones send before alloc new SKB
+  -n : ($COUNT)     num messages to send per thread, 0 means indefinitely
   -b : ($BURST)     HW level bursting of SKBs
   -v : ($VERBOSE)   verbose
   -x : ($DEBUG)     debug
+  -6 : ($IP6)       IPv6
+  -w : ($DELAY)     Tx Delay value (ns)
+  -a : ($APPEND)    Script will not reset generator's state, but will append its config
 
 The global variables being set are also listed.  E.g. the required
 interface/device parameter "-i" sets variable $DEV.  Copy the
 pktgen_sampleXX scripts and modify them to fit your own needs.
 
-The old scripts::
-
-    pktgen.conf-1-2                  # 1 CPU 2 dev
-    pktgen.conf-1-1-rdos             # 1 CPU 1 dev w. route DoS
-    pktgen.conf-1-1-ip6              # 1 CPU 1 dev ipv6
-    pktgen.conf-1-1-ip6-rdos         # 1 CPU 1 dev ipv6  w. route DoS
-    pktgen.conf-1-1-flows            # 1 CPU 1 dev multiple flows.
-
 
 Interrupt affinity
 ===================
@@ -398,7 +396,7 @@ Current commands and configuration options
 References:
 
 - ftp://robur.slu.se/pub/Linux/net-development/pktgen-testing/
-- tp://robur.slu.se/pub/Linux/net-development/pktgen-testing/examples/
+- ftp://robur.slu.se/pub/Linux/net-development/pktgen-testing/examples/
 
 Paper from Linux-Kongress in Erlangen 2004.
 - ftp://robur.slu.se/pub/Linux/net-development/pktgen-testing/pktgen_paper.pdf

samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh

@@ -89,14 +89,21 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
     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 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
+print_result

samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh

@@ -69,14 +69,21 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
     pg_set $dev "xmit_mode queue_xmit"
 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 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
+print_result

samples/pktgen/pktgen_sample01_simple.sh

@@ -79,15 +79,22 @@ pg_set $DEV "flag UDPSRC_RND"
 pg_set $DEV "udp_src_min $UDP_SRC_MIN"
 pg_set $DEV "udp_src_max $UDP_SRC_MAX"
 
+# Run if user hits control-c
+function print_result() {
+    # Print results
+    echo "Result device: $DEV"
+    cat /proc/net/pktgen/$DEV
+}
+# trap keyboard interrupt (Ctrl-C)
+trap true SIGINT
+
 if [ -z "$APPEND" ]; then
     # start_run
     echo "Running... ctrl^C to stop" >&2
     pg_ctrl "start"
     echo "Done" >&2
 
-    # Print results
-    echo "Result device: $DEV"
-    cat /proc/net/pktgen/$DEV
+    print_result
 else
     echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
 fi
\ No newline at end of file

samples/pktgen/pktgen_sample02_multiqueue.sh

@@ -83,18 +83,25 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
     pg_set $dev "udp_src_max $UDP_SRC_MAX"
 done
 
-if [ -z "$APPEND" ]; then
-    # start_run
-    echo "Running... ctrl^C to stop" >&2
-    pg_ctrl "start"
-    echo "Done" >&2
-
+# 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
+
+if [ -z "$APPEND" ]; then
+    # start_run
+    echo "Running... ctrl^C to stop" >&2
+    pg_ctrl "start"
+    echo "Done" >&2
+
+    print_result
 else
     echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
 fi

samples/pktgen/pktgen_sample03_burst_single_flow.sh

@@ -85,7 +85,7 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
 done
 
 # Run if user hits control-c
-function control_c() {
+function print_result() {
     # Print results
     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
 	dev=${DEV}@${thread}
@@ -94,11 +94,13 @@ function control_c() {
     done
 }
 # trap keyboard interrupt (Ctrl-C)
-trap control_c SIGINT
+trap true SIGINT
 
 if [ -z "$APPEND" ]; then
     echo "Running... ctrl^C to stop" >&2
     pg_ctrl "start"
+
+    print_result
 else
     echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
 fi

samples/pktgen/pktgen_sample06_numa_awared_queue_irq_affinity.sh

@@ -100,12 +100,8 @@ for ((i = 0; i < $THREADS; i++)); do
     pg_set $dev "udp_src_max $UDP_SRC_MAX"
 done
 
-# start_run
-if [ -z "$APPEND" ]; then
-    echo "Running... ctrl^C to stop" >&2
-    pg_ctrl "start"
-    echo "Done" >&2
-
+# Run if user hits control-c
+function print_result() {
     # Print results
     for ((i = 0; i < $THREADS; i++)); do
         thread=${cpu_array[$((i+F_THREAD))]}
@@ -113,6 +109,17 @@ if [ -z "$APPEND" ]; then
         echo "Device: $dev"
         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
     done
+}
+# trap keyboard interrupt (Ctrl-C)
+trap true SIGINT
+
+# start_run
+if [ -z "$APPEND" ]; then
+    echo "Running... ctrl^C to stop" >&2
+    pg_ctrl "start"
+    echo "Done" >&2
+
+    print_result
 else
     echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
 fi