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samples: pktgen: fix proc_cmd command result check logic

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Currently, proc_cmd is used to dispatch command to 'pg_ctrl', 'pg_thread',
'pg_set'. proc_cmd is designed to check command result with grep the
"Result:", but this might fail since this string is only shown in
'pg_thread' and 'pg_set'.

This commit fixes this logic by grep-ing the "Result:" string only when
the command is not for 'pg_ctrl'.

For clarity of an execution flow, 'errexit' flag has been set.

To cleanup pktgen on exit, trap has been added for EXIT signal.

Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel T. Lee 2019-10-05 17:25:07 +09:00 committed by David S. Miller
parent 723d2904a2
commit 3cad8f9115
1 changed files with 11 additions and 6 deletions
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13
samples/pktgen/functions.sh
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@ -5,6 +5,8 @@
# Author: Jesper Dangaaard Brouer
# License: GPL
set -o errexit
## -- General shell logging cmds --
function err() {
local exitcode=$1
@ -58,6 +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
@ -73,14 +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 $? from grep
if [[ "$proc_file" != "pgctrl" ]]; then
result=$(grep "Result: OK:" $proc_ctrl) || true
if [[ "$result" == "" ]]; then
grep "Result:" $proc_ctrl >&2
fi
fi
if (( $status != 0 )); then
err 5 "Write error($status) occurred cmd: \"$@ > $proc_ctrl\""
fi
@ -105,6 +108,8 @@ function pgset() {
fi
}
[[ $EUID -eq 0 ]] && trap 'pg_ctrl "reset"' EXIT
## -- General shell tricks --
function root_check_run_with_sudo() {