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netem parameters to change command

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When using tc to change netem attributes, only those values
on the command line should be passed down, others should
remain unchanged.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
This commit is contained in:
Stephen Hemminger 2007-01-09 15:46:55 -08:00
parent 02e9f72fd9
commit 40076f622e
1 changed files with 16 additions and 10 deletions
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26
tc/q_netem.c
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@ -136,12 +136,14 @@ static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
struct tc_netem_reorder reorder;
struct tc_netem_corrupt corrupt;
__s16 *dist_data = NULL;
int present[__TCA_NETEM_MAX];
memset(&opt, 0, sizeof(opt));
opt.limit = 1000;
memset(&cor, 0, sizeof(cor));
memset(&reorder, 0, sizeof(reorder));
memset(&corrupt, 0, sizeof(corrupt));
memset(present, 0, sizeof(present));
while (argc > 0) {
if (matches(*argv, "limit") == 0) {
@ -167,8 +169,8 @@ static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
if (NEXT_IS_NUMBER()) {
NEXT_ARG();
if (get_percent(&cor.delay_corr,
*argv)) {
++present[TCA_NETEM_CORR];
if (get_percent(&cor.delay_corr, *argv)) {
explain1("latency");
return -1;
}
@ -183,6 +185,7 @@ static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
}
if (NEXT_IS_NUMBER()) {
NEXT_ARG();
++present[TCA_NETEM_CORR];
if (get_percent(&cor.loss_corr, *argv)) {
explain1("loss");
return -1;
@ -190,12 +193,14 @@ static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
}
} else if (matches(*argv, "reorder") == 0) {
NEXT_ARG();
present[TCA_NETEM_REORDER] = 1;
if (get_percent(&reorder.probability, *argv)) {
explain1("reorder");
return -1;
}
if (NEXT_IS_NUMBER()) {
NEXT_ARG();
++present[TCA_NETEM_CORR];
if (get_percent(&reorder.correlation, *argv)) {
explain1("reorder");
return -1;
@ -203,12 +208,14 @@ static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
}
} else if (matches(*argv, "corrupt") == 0) {
NEXT_ARG();
present[TCA_NETEM_CORRUPT] = 1;
if (get_percent(&corrupt.probability, *argv)) {
explain1("corrupt");
return -1;
}
if (NEXT_IS_NUMBER()) {
NEXT_ARG();
++present[TCA_NETEM_CORR];
if (get_percent(&corrupt.correlation, *argv)) {
explain1("corrupt");
return -1;
@ -273,18 +280,17 @@ static int netem_parse_opt(struct qdisc_util *qu, int argc, char **argv,
if (addattr_l(n, TCA_BUF_MAX, TCA_OPTIONS, &opt, sizeof(opt)) < 0)
return -1;
if (cor.delay_corr || cor.loss_corr || cor.dup_corr) {
if (addattr_l(n, TCA_BUF_MAX, TCA_NETEM_CORR, &cor, sizeof(cor)) < 0)
if (present[TCA_NETEM_CORR] &&
addattr_l(n, TCA_BUF_MAX, TCA_NETEM_CORR, &cor, sizeof(cor)) < 0)
return -1;
}
if (addattr_l(n, TCA_BUF_MAX, TCA_NETEM_REORDER, &reorder, sizeof(reorder)) < 0)
if (present[TCA_NETEM_REORDER] &&
addattr_l(n, TCA_BUF_MAX, TCA_NETEM_REORDER, &reorder, sizeof(reorder)) < 0)
return -1;
if (corrupt.probability) {
if (addattr_l(n, TCA_BUF_MAX, TCA_NETEM_CORRUPT, &corrupt, sizeof(corrupt)) < 0)
return -1;
}
if (present[TCA_NETEM_CORRUPT] &&
addattr_l(n, TCA_BUF_MAX, TCA_NETEM_CORRUPT, &corrupt, sizeof(corrupt)) < 0)
return -1;
if (dist_data) {
if (addattr_l(n, 32768, TCA_NETEM_DELAY_DIST,