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* [v3 1/3] samples: pktgen: make variable consistent with option
@ 2019-09-14 15:13 Daniel T. Lee
  2019-09-14 15:13 ` [v3 2/3] samples: pktgen: add helper functions for IP(v4/v6) CIDR parsing Daniel T. Lee
  2019-09-14 15:13 ` [v3 3/3] samples: pktgen: allow to specify destination IP range (CIDR) Daniel T. Lee
  0 siblings, 2 replies; 6+ messages in thread
From: Daniel T. Lee @ 2019-09-14 15:13 UTC (permalink / raw)
  To: Jesper Dangaard Brouer, David S . Miller; +Cc: netdev

This commit changes variable names that can cause confusion.

For example, variable DST_MIN is quite confusing since the
keyword 'udp_dst_min' and keyword 'dst_min' is used with pg_ctrl.

On the following commit, 'dst_min' will be used to set destination IP,
and the existing variable name DST_MIN should be changed.

Variable names are matched to the exact keyword used with pg_ctrl.

Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
---
 .../pktgen_bench_xmit_mode_netif_receive.sh      |  8 ++++----
 .../pktgen/pktgen_bench_xmit_mode_queue_xmit.sh  |  8 ++++----
 samples/pktgen/pktgen_sample01_simple.sh         | 16 ++++++++--------
 samples/pktgen/pktgen_sample02_multiqueue.sh     | 16 ++++++++--------
 .../pktgen/pktgen_sample03_burst_single_flow.sh  |  8 ++++----
 samples/pktgen/pktgen_sample04_many_flows.sh     |  8 ++++----
 .../pktgen/pktgen_sample05_flow_per_thread.sh    |  8 ++++----
 ...en_sample06_numa_awared_queue_irq_affinity.sh | 16 ++++++++--------
 8 files changed, 44 insertions(+), 44 deletions(-)

diff --git a/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh b/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
index e14b1a9144d9..9b74502c58f7 100755
--- a/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
+++ b/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
@@ -42,8 +42,8 @@ fi
 [ -z "$BURST" ] && BURST=1024
 [ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
 if [ -n "$DST_PORT" ]; then
-    read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
-    validate_ports $DST_MIN $DST_MAX
+    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
+    validate_ports $UDP_DST_MIN $UDP_DST_MAX
 fi
 
 # Base Config
@@ -76,8 +76,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
 	pg_set $dev "flag UDPDST_RND"
-	pg_set $dev "udp_dst_min $DST_MIN"
-	pg_set $dev "udp_dst_max $DST_MAX"
+	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
diff --git a/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh b/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
index 82c3e504e056..0f332555b40d 100755
--- a/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
+++ b/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
@@ -25,8 +25,8 @@ if [[ -n "$BURST" ]]; then
 fi
 [ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
 if [ -n "$DST_PORT" ]; then
-    read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
-    validate_ports $DST_MIN $DST_MAX
+    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
+    validate_ports $UDP_DST_MIN $UDP_DST_MAX
 fi
 
 # Base Config
@@ -59,8 +59,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
 	pg_set $dev "flag UDPDST_RND"
-	pg_set $dev "udp_dst_min $DST_MIN"
-	pg_set $dev "udp_dst_max $DST_MAX"
+	pg_set $dev "udp_dst_min $UDP_DST_MIN"
+	pg_set $dev "udp_dst_max $UDP_DST_MAX"
     fi
 
     # Inject packet into TX qdisc egress path of stack
diff --git a/samples/pktgen/pktgen_sample01_simple.sh b/samples/pktgen/pktgen_sample01_simple.sh
index d1702fdde8f3..063ec0998906 100755
--- a/samples/pktgen/pktgen_sample01_simple.sh
+++ b/samples/pktgen/pktgen_sample01_simple.sh
@@ -23,16 +23,16 @@ fi
 [ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
 [ -z "$COUNT" ]   && COUNT="100000" # Zero means indefinitely
 if [ -n "$DST_PORT" ]; then
-    read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
-    validate_ports $DST_MIN $DST_MAX
+    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
+    validate_ports $UDP_DST_MIN $UDP_DST_MAX
 fi
 
 # Base Config
 DELAY="0"        # Zero means max speed
 
 # Flow variation random source port between min and max
-UDP_MIN=9
-UDP_MAX=109
+UDP_SRC_MIN=9
+UDP_SRC_MAX=109
 
 # General cleanup everything since last run
 # (especially important if other threads were configured by other scripts)
@@ -66,14 +66,14 @@ pg_set $DEV "dst$IP6 $DEST_IP"
 if [ -n "$DST_PORT" ]; then
     # Single destination port or random port range
     pg_set $DEV "flag UDPDST_RND"
-    pg_set $DEV "udp_dst_min $DST_MIN"
-    pg_set $DEV "udp_dst_max $DST_MAX"
+    pg_set $DEV "udp_dst_min $UDP_DST_MIN"
+    pg_set $DEV "udp_dst_max $UDP_DST_MAX"
 fi
 
 # Setup random UDP port src range
 pg_set $DEV "flag UDPSRC_RND"
-pg_set $DEV "udp_src_min $UDP_MIN"
-pg_set $DEV "udp_src_max $UDP_MAX"
+pg_set $DEV "udp_src_min $UDP_SRC_MIN"
+pg_set $DEV "udp_src_max $UDP_SRC_MAX"
 
 # start_run
 echo "Running... ctrl^C to stop" >&2
diff --git a/samples/pktgen/pktgen_sample02_multiqueue.sh b/samples/pktgen/pktgen_sample02_multiqueue.sh
index 7f7a9a27548f..a4726fb50197 100755
--- a/samples/pktgen/pktgen_sample02_multiqueue.sh
+++ b/samples/pktgen/pktgen_sample02_multiqueue.sh
@@ -21,8 +21,8 @@ DELAY="0"        # Zero means max speed
 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
 
 # Flow variation random source port between min and max
-UDP_MIN=9
-UDP_MAX=109
+UDP_SRC_MIN=9
+UDP_SRC_MAX=109
 
 # (example of setting default params in your script)
 if [ -z "$DEST_IP" ]; then
@@ -30,8 +30,8 @@ if [ -z "$DEST_IP" ]; then
 fi
 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
 if [ -n "$DST_PORT" ]; then
-    read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
-    validate_ports $DST_MIN $DST_MAX
+    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
@@ -67,14 +67,14 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
 	pg_set $dev "flag UDPDST_RND"
-	pg_set $dev "udp_dst_min $DST_MIN"
-	pg_set $dev "udp_dst_max $DST_MAX"
+	pg_set $dev "udp_dst_min $UDP_DST_MIN"
+	pg_set $dev "udp_dst_max $UDP_DST_MAX"
     fi
 
     # Setup random UDP port src range
     pg_set $dev "flag UDPSRC_RND"
-    pg_set $dev "udp_src_min $UDP_MIN"
-    pg_set $dev "udp_src_max $UDP_MAX"
+    pg_set $dev "udp_src_min $UDP_SRC_MIN"
+    pg_set $dev "udp_src_max $UDP_SRC_MAX"
 done
 
 # start_run
diff --git a/samples/pktgen/pktgen_sample03_burst_single_flow.sh b/samples/pktgen/pktgen_sample03_burst_single_flow.sh
index b520637817ce..dfea91a09ccc 100755
--- a/samples/pktgen/pktgen_sample03_burst_single_flow.sh
+++ b/samples/pktgen/pktgen_sample03_burst_single_flow.sh
@@ -34,8 +34,8 @@ fi
 [ -z "$CLONE_SKB" ] && CLONE_SKB="0" # No need for clones when bursting
 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
 if [ -n "$DST_PORT" ]; then
-    read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
-    validate_ports $DST_MIN $DST_MAX
+    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
+    validate_ports $UDP_DST_MIN $UDP_DST_MAX
 fi
 
 # Base Config
@@ -67,8 +67,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
 	pg_set $dev "flag UDPDST_RND"
-	pg_set $dev "udp_dst_min $DST_MIN"
-	pg_set $dev "udp_dst_max $DST_MAX"
+	pg_set $dev "udp_dst_min $UDP_DST_MIN"
+	pg_set $dev "udp_dst_max $UDP_DST_MAX"
     fi
 
     # Setup burst, for easy testing -b 0 disable bursting
diff --git a/samples/pktgen/pktgen_sample04_many_flows.sh b/samples/pktgen/pktgen_sample04_many_flows.sh
index 5b6e9d9cb5b5..7ea9b4a3acf6 100755
--- a/samples/pktgen/pktgen_sample04_many_flows.sh
+++ b/samples/pktgen/pktgen_sample04_many_flows.sh
@@ -18,8 +18,8 @@ source ${basedir}/parameters.sh
 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
 if [ -n "$DST_PORT" ]; then
-    read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
-    validate_ports $DST_MIN $DST_MAX
+    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
+    validate_ports $UDP_DST_MIN $UDP_DST_MAX
 fi
 
 # NOTICE:  Script specific settings
@@ -63,8 +63,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
 	pg_set $dev "flag UDPDST_RND"
-	pg_set $dev "udp_dst_min $DST_MIN"
-	pg_set $dev "udp_dst_max $DST_MAX"
+	pg_set $dev "udp_dst_min $UDP_DST_MIN"
+	pg_set $dev "udp_dst_max $UDP_DST_MAX"
     fi
 
     # Randomize source IP-addresses
diff --git a/samples/pktgen/pktgen_sample05_flow_per_thread.sh b/samples/pktgen/pktgen_sample05_flow_per_thread.sh
index 0c06e63fbe97..fbfafe029e11 100755
--- a/samples/pktgen/pktgen_sample05_flow_per_thread.sh
+++ b/samples/pktgen/pktgen_sample05_flow_per_thread.sh
@@ -23,8 +23,8 @@ source ${basedir}/parameters.sh
 [ -z "$BURST" ]     && BURST=32
 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
 if [ -n "$DST_PORT" ]; then
-    read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
-    validate_ports $DST_MIN $DST_MAX
+    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
+    validate_ports $UDP_DST_MIN $UDP_DST_MAX
 fi
 
 # Base Config
@@ -56,8 +56,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
 	pg_set $dev "flag UDPDST_RND"
-	pg_set $dev "udp_dst_min $DST_MIN"
-	pg_set $dev "udp_dst_max $DST_MAX"
+	pg_set $dev "udp_dst_min $UDP_DST_MIN"
+	pg_set $dev "udp_dst_max $UDP_DST_MAX"
     fi
 
     # Setup source IP-addresses based on thread number
diff --git a/samples/pktgen/pktgen_sample06_numa_awared_queue_irq_affinity.sh b/samples/pktgen/pktgen_sample06_numa_awared_queue_irq_affinity.sh
index 97f0266c0356..755e662183f1 100755
--- a/samples/pktgen/pktgen_sample06_numa_awared_queue_irq_affinity.sh
+++ b/samples/pktgen/pktgen_sample06_numa_awared_queue_irq_affinity.sh
@@ -20,8 +20,8 @@ DELAY="0"        # Zero means max speed
 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
 
 # Flow variation random source port between min and max
-UDP_MIN=9
-UDP_MAX=109
+UDP_SRC_MIN=9
+UDP_SRC_MAX=109
 
 node=`get_iface_node $DEV`
 irq_array=(`get_iface_irqs $DEV`)
@@ -36,8 +36,8 @@ if [ -z "$DEST_IP" ]; then
 fi
 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
 if [ -n "$DST_PORT" ]; then
-    read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
-    validate_ports $DST_MIN $DST_MAX
+    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
@@ -84,14 +84,14 @@ for ((i = 0; i < $THREADS; i++)); do
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
 	pg_set $dev "flag UDPDST_RND"
-	pg_set $dev "udp_dst_min $DST_MIN"
-	pg_set $dev "udp_dst_max $DST_MAX"
+	pg_set $dev "udp_dst_min $UDP_DST_MIN"
+	pg_set $dev "udp_dst_max $UDP_DST_MAX"
     fi
 
     # Setup random UDP port src range
     pg_set $dev "flag UDPSRC_RND"
-    pg_set $dev "udp_src_min $UDP_MIN"
-    pg_set $dev "udp_src_max $UDP_MAX"
+    pg_set $dev "udp_src_min $UDP_SRC_MIN"
+    pg_set $dev "udp_src_max $UDP_SRC_MAX"
 done
 
 # start_run
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [v3 2/3] samples: pktgen: add helper functions for IP(v4/v6) CIDR parsing
  2019-09-14 15:13 [v3 1/3] samples: pktgen: make variable consistent with option Daniel T. Lee
@ 2019-09-14 15:13 ` Daniel T. Lee
  2019-09-16  6:53   ` Jesper Dangaard Brouer
  2019-09-14 15:13 ` [v3 3/3] samples: pktgen: allow to specify destination IP range (CIDR) Daniel T. Lee
  1 sibling, 1 reply; 6+ messages in thread
From: Daniel T. Lee @ 2019-09-14 15:13 UTC (permalink / raw)
  To: Jesper Dangaard Brouer, David S . Miller; +Cc: netdev

This commit adds CIDR parsing and IP validate helper function to parse
single IP or range of IP with CIDR. (e.g. 198.18.0.0/15)

Helpers will be used in prior to set target address in samples/pktgen.

Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
---
Changes since v3:
 * Set errexit option to stop script execution on error

 samples/pktgen/functions.sh | 124 ++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)

diff --git a/samples/pktgen/functions.sh b/samples/pktgen/functions.sh
index 4af4046d71be..87ae61701904 100644
--- a/samples/pktgen/functions.sh
+++ b/samples/pktgen/functions.sh
@@ -5,6 +5,8 @@
 # Author: Jesper Dangaaard Brouer
 # License: GPL
 
+set -o errexit
+
 ## -- General shell logging cmds --
 function err() {
     local exitcode=$1
@@ -163,6 +165,128 @@ function get_node_cpus()
 	echo $node_cpu_list
 }
 
+# Extend shrunken IPv6 address.
+# fe80::42:bcff:fe84:e10a => fe80:0:0:0:42:bcff:fe84:e10a
+function extend_addr6()
+{
+    local addr=$1
+    local sep=: sep2=::
+    local sep_cnt=$(tr -cd $sep <<< $1 | wc -c)
+    local shrink
+
+    # separator count : should be between 2, 7.
+    if [[ $sep_cnt -lt 2 || $sep_cnt -gt 7 ]]; then
+        err 5 "Invalid IP6 address sep: $1"
+    fi
+
+    # if shrink '::' occurs multiple, it's malformed.
+    shrink=( $(egrep -o "$sep{2,}" <<< $addr) )
+    if [[ ${#shrink[@]} -ne 0 ]]; then
+        if [[ ${#shrink[@]} -gt 1 || ( ${shrink[0]} != $sep2 ) ]]; then
+            err 5 "Invalid IP$IP6 address shr: $1"
+        fi
+    fi
+
+    # add 0 at begin & end, and extend addr by adding :0
+    [[ ${addr:0:1} == $sep ]] && addr=0${addr}
+    [[ ${addr: -1} == $sep ]] && addr=${addr}0
+    echo "${addr/$sep2/$(printf ':0%.s' $(seq $[8-sep_cnt])):}"
+}
+
+
+# Given a single IP(v4/v6) address, whether it is valid.
+function validate_addr()
+{
+    # check function is called with (funcname)6
+    [[ ${FUNCNAME[1]: -1} == 6 ]] && local IP6=6
+    local len=$[ IP6 ? 8 : 4 ]
+    local max=$[ 2**(len*2)-1 ]
+    local addr sep
+
+    # set separator for each IP(v4/v6)
+    [[ $IP6 ]] && sep=: || sep=.
+    IFS=$sep read -a addr <<< $1
+
+    # array length
+    if [[ ${#addr[@]} != $len ]]; then
+        err 5 "Invalid IP$IP6 address: $1"
+    fi
+
+    # check each digit between 0, $max
+    for digit in "${addr[@]}"; do
+        [[ $IP6 ]] && digit=$[ 16#$digit ]
+        if [[ $digit -lt 0 || $digit -gt $max ]]; then
+            err 5 "Invalid IP$IP6 address: $1"
+        fi
+    done
+
+    return 0
+}
+
+function validate_addr6() { validate_addr $@ ; }
+
+# Given a single IP(v4/v6) or CIDR, return minimum and maximum IP addr.
+function parse_addr()
+{
+    # check function is called with (funcname)6
+    [[ ${FUNCNAME[1]: -1} == 6 ]] && local IP6=6
+    local bitlen=$[ IP6 ? 128 : 32 ]
+    local octet=$[ IP6 ? 16 : 8 ]
+
+    local addr=$1
+    local net prefix
+    local min_ip max_ip
+
+    IFS='/' read net prefix <<< $addr
+    [[ $IP6 ]] && net=$(extend_addr6 $net)
+    validate_addr$IP6 $net
+
+    if [[ $prefix -gt $bitlen ]]; then
+        err 5 "Invalid prefix: $prefix"
+    elif [[ -z $prefix ]]; then
+        min_ip=$net
+        max_ip=$net
+    else
+        # defining array for converting Decimal 2 Binary
+        # 00000000 00000001 00000010 00000011 00000100 ...
+        local d2b='{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}'
+        [[ $IP6 ]] && d2b+=$d2b
+        eval local D2B=($d2b)
+
+        local remain=$[ bitlen-prefix ]
+        local min_mask max_mask
+        local min max
+        local ip_bit
+        local ip sep
+
+        # set separator for each IP(v4/v6)
+        [[ $IP6 ]] && sep=: || sep=.
+        IFS=$sep read -ra ip <<< $net
+
+        min_mask="$(printf '1%.s' $(seq $prefix))$(printf '0%.s' $(seq $remain))"
+        max_mask="$(printf '0%.s' $(seq $prefix))$(printf '1%.s' $(seq $remain))"
+
+        # calculate min/max ip with &,| operator
+        for i in "${!ip[@]}"; do
+            digit=$[ IP6 ? 16#${ip[$i]} : ${ip[$i]} ]
+            ip_bit=${D2B[$digit]}
+
+            idx=$[ octet*i ]
+            min[$i]=$[ 2#$ip_bit & 2#${min_mask:$idx:$octet} ]
+            max[$i]=$[ 2#$ip_bit | 2#${max_mask:$idx:$octet} ]
+            [[ $IP6 ]] && { min[$i]=$(printf '%X' ${min[$i]});
+                            max[$i]=$(printf '%X' ${max[$i]}); }
+        done
+
+        min_ip=$(IFS=$sep; echo "${min[*]}")
+        max_ip=$(IFS=$sep; echo "${max[*]}")
+    fi
+
+    echo $min_ip $max_ip
+}
+
+function parse_addr6() { parse_addr $@ ; }
+
 # Given a single or range of port(s), return minimum and maximum port number.
 function parse_ports()
 {
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [v3 3/3] samples: pktgen: allow to specify destination IP range (CIDR)
  2019-09-14 15:13 [v3 1/3] samples: pktgen: make variable consistent with option Daniel T. Lee
  2019-09-14 15:13 ` [v3 2/3] samples: pktgen: add helper functions for IP(v4/v6) CIDR parsing Daniel T. Lee
@ 2019-09-14 15:13 ` Daniel T. Lee
  1 sibling, 0 replies; 6+ messages in thread
From: Daniel T. Lee @ 2019-09-14 15:13 UTC (permalink / raw)
  To: Jesper Dangaard Brouer, David S . Miller; +Cc: netdev

Currently, kernel pktgen has the feature to specify destination
address range for sending packet. (e.g. pgset "dst_min/dst_max")

But on samples, each of the scripts doesn't have any option to achieve this.

This commit adds the feature to specify the destination address range with CIDR.

    -d : ($DEST_IP)   destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed

    # ./pktgen_sample01_simple.sh -6 -d fe80::20/126 -p 3000 -n 4
    # tcpdump ip6 and udp
    05:14:18.082285 IP6 fe80::99.71 > fe80::23.3000: UDP, length 16
    05:14:18.082564 IP6 fe80::99.43 > fe80::23.3000: UDP, length 16
    05:14:18.083366 IP6 fe80::99.107 > fe80::22.3000: UDP, length 16
    05:14:18.083585 IP6 fe80::99.97 > fe80::21.3000: UDP, length 16

Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
---
 samples/pktgen/README.rst                             |  2 +-
 samples/pktgen/parameters.sh                          |  2 +-
 .../pktgen/pktgen_bench_xmit_mode_netif_receive.sh    |  4 +++-
 samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh   |  4 +++-
 samples/pktgen/pktgen_sample01_simple.sh              |  4 +++-
 samples/pktgen/pktgen_sample02_multiqueue.sh          |  4 +++-
 samples/pktgen/pktgen_sample03_burst_single_flow.sh   |  4 +++-
 samples/pktgen/pktgen_sample04_many_flows.sh          | 11 ++++++++---
 samples/pktgen/pktgen_sample05_flow_per_thread.sh     |  4 +++-
 .../pktgen_sample06_numa_awared_queue_irq_affinity.sh |  4 +++-
 10 files changed, 31 insertions(+), 12 deletions(-)

diff --git a/samples/pktgen/README.rst b/samples/pktgen/README.rst
index fd39215db508..3f6483e8b2df 100644
--- a/samples/pktgen/README.rst
+++ b/samples/pktgen/README.rst
@@ -18,7 +18,7 @@ across the sample scripts.  Usage example is printed on errors::
  Usage: ./pktgen_sample01_simple.sh [-vx] -i ethX
   -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
diff --git a/samples/pktgen/parameters.sh b/samples/pktgen/parameters.sh
index a06b00a0c7b6..ff0ed474fee9 100644
--- a/samples/pktgen/parameters.sh
+++ b/samples/pktgen/parameters.sh
@@ -8,7 +8,7 @@ function usage() {
     echo "Usage: $0 [-vx] -i ethX"
     echo "  -i : (\$DEV)       output interface/device (required)"
     echo "  -s : (\$PKT_SIZE)  packet size"
-    echo "  -d : (\$DEST_IP)   destination IP"
+    echo "  -d : (\$DEST_IP)   destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed"
     echo "  -m : (\$DST_MAC)   destination MAC-addr"
     echo "  -p : (\$DST_PORT)  destination PORT range (e.g. 433-444) is also allowed"
     echo "  -t : (\$THREADS)   threads to start"
diff --git a/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh b/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
index 9b74502c58f7..da6cb711b7f4 100755
--- a/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
+++ b/samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh
@@ -41,6 +41,7 @@ fi
 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
 [ -z "$BURST" ] && BURST=1024
 [ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
+[ -n "$DEST_IP" ] && read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
 if [ -n "$DST_PORT" ]; then
     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
     validate_ports $UDP_DST_MIN $UDP_DST_MAX
@@ -71,7 +72,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
 
     # Destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst$IP6 $DEST_IP"
+    pg_set $dev "dst${IP6}_min $DST_MIN"
+    pg_set $dev "dst${IP6}_max $DST_MAX"
 
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
diff --git a/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh b/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
index 0f332555b40d..355937787364 100755
--- a/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
+++ b/samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh
@@ -24,6 +24,7 @@ if [[ -n "$BURST" ]]; then
     err 1 "Bursting not supported for this mode"
 fi
 [ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
+[ -n "$DEST_IP" ] && read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
 if [ -n "$DST_PORT" ]; then
     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
     validate_ports $UDP_DST_MIN $UDP_DST_MAX
@@ -54,7 +55,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
 
     # Destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst$IP6 $DEST_IP"
+    pg_set $dev "dst${IP6}_min $DST_MIN"
+    pg_set $dev "dst${IP6}_max $DST_MAX"
 
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
diff --git a/samples/pktgen/pktgen_sample01_simple.sh b/samples/pktgen/pktgen_sample01_simple.sh
index 063ec0998906..08995fa70025 100755
--- a/samples/pktgen/pktgen_sample01_simple.sh
+++ b/samples/pktgen/pktgen_sample01_simple.sh
@@ -22,6 +22,7 @@ fi
 # Example enforce param "-m" for dst_mac
 [ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
 [ -z "$COUNT" ]   && COUNT="100000" # Zero means indefinitely
+[ -n "$DEST_IP" ] && read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
 if [ -n "$DST_PORT" ]; then
     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
     validate_ports $UDP_DST_MIN $UDP_DST_MAX
@@ -61,7 +62,8 @@ pg_set $DEV "flag NO_TIMESTAMP"
 
 # Destination
 pg_set $DEV "dst_mac $DST_MAC"
-pg_set $DEV "dst$IP6 $DEST_IP"
+pg_set $DEV "dst${IP6}_min $DST_MIN"
+pg_set $DEV "dst${IP6}_max $DST_MAX"
 
 if [ -n "$DST_PORT" ]; then
     # Single destination port or random port range
diff --git a/samples/pktgen/pktgen_sample02_multiqueue.sh b/samples/pktgen/pktgen_sample02_multiqueue.sh
index a4726fb50197..9b806e41c23a 100755
--- a/samples/pktgen/pktgen_sample02_multiqueue.sh
+++ b/samples/pktgen/pktgen_sample02_multiqueue.sh
@@ -29,6 +29,7 @@ if [ -z "$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"
+[ -n "$DEST_IP" ] && read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
 if [ -n "$DST_PORT" ]; then
     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
     validate_ports $UDP_DST_MIN $UDP_DST_MAX
@@ -62,7 +63,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
 
     # Destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst$IP6 $DEST_IP"
+    pg_set $dev "dst${IP6}_min $DST_MIN"
+    pg_set $dev "dst${IP6}_max $DST_MAX"
 
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
diff --git a/samples/pktgen/pktgen_sample03_burst_single_flow.sh b/samples/pktgen/pktgen_sample03_burst_single_flow.sh
index dfea91a09ccc..cb067788ceb3 100755
--- a/samples/pktgen/pktgen_sample03_burst_single_flow.sh
+++ b/samples/pktgen/pktgen_sample03_burst_single_flow.sh
@@ -33,6 +33,7 @@ fi
 [ -z "$BURST" ]     && BURST=32
 [ -z "$CLONE_SKB" ] && CLONE_SKB="0" # No need for clones when bursting
 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
+[ -n "$DEST_IP" ]   && read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
 if [ -n "$DST_PORT" ]; then
     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
     validate_ports $UDP_DST_MIN $UDP_DST_MAX
@@ -62,7 +63,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
 
     # Destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst$IP6 $DEST_IP"
+    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
diff --git a/samples/pktgen/pktgen_sample04_many_flows.sh b/samples/pktgen/pktgen_sample04_many_flows.sh
index 7ea9b4a3acf6..626e33016869 100755
--- a/samples/pktgen/pktgen_sample04_many_flows.sh
+++ b/samples/pktgen/pktgen_sample04_many_flows.sh
@@ -17,6 +17,7 @@ source ${basedir}/parameters.sh
 [ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
+[ -n "$DEST_IP" ]   && read -r DST_MIN DST_MAX <<< $(parse_addr $DEST_IP)
 if [ -n "$DST_PORT" ]; then
     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
     validate_ports $UDP_DST_MIN $UDP_DST_MAX
@@ -37,6 +38,9 @@ if [[ -n "$BURST" ]]; then
     err 1 "Bursting not supported for this mode"
 fi
 
+# 198.18.0.0 / 198.19.255.255
+read -r SRC_MIN SRC_MAX <<< $(parse_addr 198.18.0.0/15)
+
 # General cleanup everything since last run
 pg_ctrl "reset"
 
@@ -58,7 +62,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
 
     # Single destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst $DEST_IP"
+    pg_set $dev "dst_min $DST_MIN"
+    pg_set $dev "dst_max $DST_MAX"
 
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
@@ -69,8 +74,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
 
     # Randomize source IP-addresses
     pg_set $dev "flag IPSRC_RND"
-    pg_set $dev "src_min 198.18.0.0"
-    pg_set $dev "src_max 198.19.255.255"
+    pg_set $dev "src_min $SRC_MIN"
+    pg_set $dev "src_max $SRC_MAX"
 
     # Limit number of flows (max 65535)
     pg_set $dev "flows $FLOWS"
diff --git a/samples/pktgen/pktgen_sample05_flow_per_thread.sh b/samples/pktgen/pktgen_sample05_flow_per_thread.sh
index fbfafe029e11..cb79de073e9d 100755
--- a/samples/pktgen/pktgen_sample05_flow_per_thread.sh
+++ b/samples/pktgen/pktgen_sample05_flow_per_thread.sh
@@ -22,6 +22,7 @@ source ${basedir}/parameters.sh
 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
 [ -z "$BURST" ]     && BURST=32
 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
+[ -n "$DEST_IP" ]   && read -r DST_MIN DST_MAX <<< $(parse_addr $DEST_IP)
 if [ -n "$DST_PORT" ]; then
     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
     validate_ports $UDP_DST_MIN $UDP_DST_MAX
@@ -51,7 +52,8 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
 
     # Single destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst $DEST_IP"
+    pg_set $dev "dst_min $DST_MIN"
+    pg_set $dev "dst_max $DST_MAX"
 
     if [ -n "$DST_PORT" ]; then
 	# Single destination port or random port range
diff --git a/samples/pktgen/pktgen_sample06_numa_awared_queue_irq_affinity.sh b/samples/pktgen/pktgen_sample06_numa_awared_queue_irq_affinity.sh
index 755e662183f1..739adcda5b5f 100755
--- a/samples/pktgen/pktgen_sample06_numa_awared_queue_irq_affinity.sh
+++ b/samples/pktgen/pktgen_sample06_numa_awared_queue_irq_affinity.sh
@@ -35,6 +35,7 @@ if [ -z "$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"
+[ -n "$DEST_IP" ] && read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
 if [ -n "$DST_PORT" ]; then
     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
     validate_ports $UDP_DST_MIN $UDP_DST_MAX
@@ -79,7 +80,8 @@ for ((i = 0; i < $THREADS; i++)); do
 
     # Destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst$IP6 $DEST_IP"
+    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
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* Re: [v3 2/3] samples: pktgen: add helper functions for IP(v4/v6) CIDR parsing
  2019-09-14 15:13 ` [v3 2/3] samples: pktgen: add helper functions for IP(v4/v6) CIDR parsing Daniel T. Lee
@ 2019-09-16  6:53   ` Jesper Dangaard Brouer
  2019-09-16 12:52     ` Toke Høiland-Jørgensen
  0 siblings, 1 reply; 6+ messages in thread
From: Jesper Dangaard Brouer @ 2019-09-16  6:53 UTC (permalink / raw)
  To: Daniel T. Lee
  Cc: David S . Miller, netdev, brouer, Toke Høiland-Jørgensen

On Sun, 15 Sep 2019 00:13:52 +0900
"Daniel T. Lee" <danieltimlee@gmail.com> wrote:

> This commit adds CIDR parsing and IP validate helper function to parse
> single IP or range of IP with CIDR. (e.g. 198.18.0.0/15)
> 
> Helpers will be used in prior to set target address in samples/pktgen.
> 
> Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
> ---
> Changes since v3:
>  * Set errexit option to stop script execution on error
> 
>  samples/pktgen/functions.sh | 124 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 124 insertions(+)
> 
> diff --git a/samples/pktgen/functions.sh b/samples/pktgen/functions.sh
> index 4af4046d71be..87ae61701904 100644
> --- a/samples/pktgen/functions.sh
> +++ b/samples/pktgen/functions.sh
> @@ -5,6 +5,8 @@
>  # Author: Jesper Dangaaard Brouer
>  # License: GPL
>  
> +set -o errexit

Unfortunately, this breaks the scripts.

The function proc_cmd are designed to grep after "Result: OK:" which
might fail, and your patch/change makes the script stop immediately.
We actually want to continue, and output what command that failed (and
also grep again after "Result:" to provide the kernel reason).

Even if you somehow "fix" function proc_cmd, then we in general want to
catch different error situations by looking at status $?, and output
meaning full errors via calling err() function.  IHMO as minimum with
errexit you need a 'trap' function that can help/inform the user of
what went wrong.

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Principal Kernel Engineer at Red Hat
  LinkedIn: http://www.linkedin.com/in/brouer

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [v3 2/3] samples: pktgen: add helper functions for IP(v4/v6) CIDR parsing
  2019-09-16  6:53   ` Jesper Dangaard Brouer
@ 2019-09-16 12:52     ` Toke Høiland-Jørgensen
  2019-09-20  3:04       ` Daniel T. Lee
  0 siblings, 1 reply; 6+ messages in thread
From: Toke Høiland-Jørgensen @ 2019-09-16 12:52 UTC (permalink / raw)
  To: Jesper Dangaard Brouer, Daniel T. Lee; +Cc: David S . Miller, netdev, brouer

Jesper Dangaard Brouer <brouer@redhat.com> writes:

> On Sun, 15 Sep 2019 00:13:52 +0900
> "Daniel T. Lee" <danieltimlee@gmail.com> wrote:
>
>> This commit adds CIDR parsing and IP validate helper function to parse
>> single IP or range of IP with CIDR. (e.g. 198.18.0.0/15)
>> 
>> Helpers will be used in prior to set target address in samples/pktgen.
>> 
>> Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
>> ---
>> Changes since v3:
>>  * Set errexit option to stop script execution on error
>> 
>>  samples/pktgen/functions.sh | 124 ++++++++++++++++++++++++++++++++++++
>>  1 file changed, 124 insertions(+)
>> 
>> diff --git a/samples/pktgen/functions.sh b/samples/pktgen/functions.sh
>> index 4af4046d71be..87ae61701904 100644
>> --- a/samples/pktgen/functions.sh
>> +++ b/samples/pktgen/functions.sh
>> @@ -5,6 +5,8 @@
>>  # Author: Jesper Dangaaard Brouer
>>  # License: GPL
>>  
>> +set -o errexit
>
> Unfortunately, this breaks the scripts.
>
> The function proc_cmd are designed to grep after "Result: OK:" which
> might fail, and your patch/change makes the script stop immediately.
> We actually want to continue, and output what command that failed (and
> also grep again after "Result:" to provide the kernel reason).
>
> Even if you somehow "fix" function proc_cmd, then we in general want to
> catch different error situations by looking at status $?, and output
> meaning full errors via calling err() function.

Yeah, I can see that some functions do this, but I don't think that
would be too hard to fix. See sample diff below (will need some more
work to deal with grep failing, but you get the idea).

I'd argue that fixing this is the right thing to do... Maybe add set -o
nounset as well while we're at it? :)

> IHMO as minimum with errexit you need a 'trap' function that can
> help/inform the user of what went wrong.

Yeah, trap ERR (which would also need set -o errtrace to work inside the
functions) might be useful in any case.

-Toke




diff --git a/samples/pktgen/functions.sh b/samples/pktgen/functions.sh
index 4af4046d71be..d61a348f85f5 100644
--- a/samples/pktgen/functions.sh
+++ b/samples/pktgen/functions.sh
@@ -58,6 +58,7 @@ function pg_set() {
 function proc_cmd() {
     local result
     local proc_file=$1
+    local status=0
     # after shift, the remaining args are contained in $@
     shift
     local proc_ctrl=${PROC_DIR}/$proc_file
@@ -73,8 +74,7 @@ function proc_cmd() {
        echo "cmd: $@ > $proc_ctrl"
     fi
     # Quoting of "$@" is important for space expansion
-    echo "$@" > "$proc_ctrl"
-    local status=$?
+    echo "$@" > "$proc_ctrl" || status=$?
 
     result=$(grep "Result: OK:" $proc_ctrl)
     # Due to pgctrl, cannot use exit code $? from grep

^ permalink raw reply related	[flat|nested] 6+ messages in thread
* Re: [v3 2/3] samples: pktgen: add helper functions for IP(v4/v6) CIDR parsing
  2019-09-16 12:52     ` Toke Høiland-Jørgensen
@ 2019-09-20  3:04       ` Daniel T. Lee
  0 siblings, 0 replies; 6+ messages in thread
From: Daniel T. Lee @ 2019-09-20  3:04 UTC (permalink / raw)
  To: Toke Høiland-Jørgensen
  Cc: Jesper Dangaard Brouer, David S . Miller, netdev

Thanks for the feedback!

How about just capturing with "Result: OK" except for 'pgctrl'?
(more details are in the diff below)

    ~/git/linux/net$ ag -Q 'Result:'
    core/pktgen.c
    702:            seq_printf(seq, "Result: %s\n", pkt_dev->result);
    704:            seq_puts(seq, "Result: Idle\n");
    1739:           seq_printf(seq, "\nResult: %s\n", t->result);
    1741:           seq_puts(seq, "\nResult: NA\n");

The upper command shows that 'Result: ' string is only printed on
'pktgen_if' and 'pktgen_thread'. So I thought just changing to below diff
will solve the problem.

diff --git a/samples/pktgen/functions.sh b/samples/pktgen/functions.sh
index 87ae61701904..38cf9f62502f 100644
--- a/samples/pktgen/functions.sh
+++ b/samples/pktgen/functions.sh
@@ -60,6 +60,7 @@ function pg_set() {
 function proc_cmd() {
     local result
     local proc_file=$1
+    local status=0
     # after shift, the remaining args are contained in $@
     shift
     local proc_ctrl=${PROC_DIR}/$proc_file
@@ -75,13 +76,14 @@ function proc_cmd() {
        echo "cmd: $@ > $proc_ctrl"
     fi
     # Quoting of "$@" is important for space expansion
-    echo "$@" > "$proc_ctrl"
-    local status=$?
+    echo "$@" > "$proc_ctrl" || status=$?

-    result=$(grep "Result: OK:" $proc_ctrl)
-    # Due to pgctrl, cannot use exit code $? from grep
-    if [[ "$result" == "" ]]; then
-       grep "Result:" $proc_ctrl >&2
+    if [[ "$proc_file" != "pgctrl" ]]; then
+        result=$(grep "Result: OK:" $proc_ctrl) || true
+        # Due to pgctrl, cannot use exit code $? from grep
+        if [[ "$result" == "" ]]; then
+        grep "Result:" $proc_ctrl >&2
+        fi
     fi

> We actually want to continue, and output what command that failed (and
> also grep again after "Result:" to provide the kernel reason).
Since, with 'true', the command won't fail and continue, and on error with
'pktgen_if' and 'pktgen_thread', It'll grep again after "Result:" to provide
the kernel reason. [1][2]

> I'd argue that fixing this is the right thing to do... Maybe add set -o
> nounset as well while we're at it? :)
Adding nounset option could break working with $IP6. Most of the scripts
tries to check if $IP6 variable exists whether it is defined or not.

> Even if you somehow "fix" function proc_cmd, then we in general want to
> catch different error situations by looking at status $?, and output
> meaning full errors via calling err() function.  IHMO as minimum with
> errexit you need a 'trap' function that can help/inform the user of
> what went wrong.

I agree. trap ERR will help with more sophisticated handling of errors, but
I'm not sure which to elaborate more (about what went wrong) compared
to current error format? (which is grep again after "Result:" to provide the
kernel reason.)

I really appreciate your time and effort for the review.

Thanks,
Daniel

[1]: pktgen_if_show:
https://elixir.bootlin.com/linux/latest/source/net/core/pktgen.c#L702
[2]: pktgen_thread_show:
https://elixir.bootlin.com/linux/latest/source/net/core/pktgen.c#L1739

^ permalink raw reply related	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2019-09-20  3:04 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-09-14 15:13 [v3 1/3] samples: pktgen: make variable consistent with option Daniel T. Lee
2019-09-14 15:13 ` [v3 2/3] samples: pktgen: add helper functions for IP(v4/v6) CIDR parsing Daniel T. Lee
2019-09-16  6:53   ` Jesper Dangaard Brouer
2019-09-16 12:52     ` Toke Høiland-Jørgensen
2019-09-20  3:04       ` Daniel T. Lee
2019-09-14 15:13 ` [v3 3/3] samples: pktgen: allow to specify destination IP range (CIDR) Daniel T. Lee

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