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netdev-linux: Avoid minor number 0 in traffic control.

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Linux traffic control handles with minor number 0 refer to qdiscs, not
to classes.  This commit deals with this by using a conversion function:
OpenFlow queue 0 maps to minor 1, queue 1 to minor 2, and so on.
This commit is contained in:
Ben Pfaff 2010-07-16 15:50:57 -07:00
parent 3c4de644d2
commit 17ee3c1ffd
2 changed files with 12 additions and 8 deletions
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2
lib/dpif-linux.c
View File

@ -463,7 +463,7 @@ dpif_linux_queue_to_priority(const struct dpif *dpif OVS_UNUSED,
uint32_t queue_id, uint32_t *priority)
{
if (queue_id < 0xf000) {
*priority = TC_H_MAKE(1 << 16, queue_id);
*priority = TC_H_MAKE(1 << 16, queue_id + 1);
return 0;
} else {
return EINVAL;

18
lib/netdev-linux.c
View File

@ -2341,8 +2341,10 @@ htb_parse_tcmsg__(struct ofpbuf *tcmsg, unsigned int *queue_id,
error = tc_parse_class(tcmsg, &handle, &nl_options, stats);
if (!error && queue_id) {
if (tc_get_major(handle) == 1 && tc_get_minor(handle) < HTB_N_QUEUES) {
*queue_id = tc_get_minor(handle);
unsigned int major = tc_get_major(handle);
unsigned int minor = tc_get_minor(handle);
if (major == 1 && minor > 0 && minor <= HTB_N_QUEUES) {
*queue_id = minor - 1;
} else {
error = EPROTO;
}
@ -2567,7 +2569,7 @@ htb_class_set(struct netdev *netdev, unsigned int queue_id,
return error;
}
error = htb_setup_class__(netdev, tc_make_handle(1, queue_id),
error = htb_setup_class__(netdev, tc_make_handle(1, queue_id + 1),
tc_make_handle(1, 0xfffe), &hc);
if (error) {
return error;
@ -2587,7 +2589,7 @@ htb_class_delete(struct netdev *netdev, unsigned int queue_id)
hc = port_array_get(&htb->tc.queues, queue_id);
assert(hc != NULL);
error = tc_delete_class(netdev, tc_make_handle(1, queue_id));
error = tc_delete_class(netdev, tc_make_handle(1, queue_id + 1));
if (!error) {
free(hc);
port_array_delete(&htb->tc.queues, queue_id);
@ -2599,7 +2601,7 @@ static int
htb_class_get_stats(const struct netdev *netdev, unsigned int queue_id,
struct netdev_queue_stats *stats)
{
return htb_query_class__(netdev, tc_make_handle(1, queue_id),
return htb_query_class__(netdev, tc_make_handle(1, queue_id + 1),
tc_make_handle(1, 0xfffe), NULL, stats);
}
@ -2609,7 +2611,7 @@ htb_class_dump_stats(const struct netdev *netdev OVS_UNUSED,
netdev_dump_queue_stats_cb *cb, void *aux)
{
struct netdev_queue_stats stats;
unsigned int handle;
unsigned int handle, major, minor;
int error;
error = tc_parse_class(nlmsg, &handle, NULL, &stats);
@ -2617,7 +2619,9 @@ htb_class_dump_stats(const struct netdev *netdev OVS_UNUSED,
return error;
}
if (tc_get_major(handle) == 1 && tc_get_minor(handle) < HTB_N_QUEUES) {
major = tc_get_major(handle);
minor = tc_get_minor(handle);
if (major == 1 && minor > 0 && minor <= HTB_N_QUEUES) {
(*cb)(tc_get_minor(handle), &stats, aux);
}
return 0;