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authorVladimir Oltean <olteanv@gmail.com>2019-08-30 04:07:23 +0300
committerDavid S. Miller <davem@davemloft.net>2019-09-01 04:45:35 +0300
commit1c6c09a0ae62fa3ea8f8ead2ac3920e6fff2de64 (patch)
tree1808a1b40a13e500b0a7363e3a279061ba54caa4 /net
parentf04b514c0ce2f20aad757ebfb04e07b1a12d2b58 (diff)
downloadlinux-1c6c09a0ae62fa3ea8f8ead2ac3920e6fff2de64.tar.xz
net/sched: cbs: Set default link speed to 10 Mbps in cbs_set_port_rate
The discussion to be made is absolutely the same as in the case of previous patch ("taprio: Set default link speed to 10 Mbps in taprio_set_picos_per_byte"). Nothing is lost when setting a default. Cc: Leandro Dorileo <leandro.maciel.dorileo@intel.com> Fixes: e0a7683d30e9 ("net/sched: cbs: fix port_rate miscalculation") Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com> Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/sched/sch_cbs.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/net/sched/sch_cbs.c b/net/sched/sch_cbs.c
index 732e109c3055..810645b5c086 100644
--- a/net/sched/sch_cbs.c
+++ b/net/sched/sch_cbs.c
@@ -181,11 +181,6 @@ static struct sk_buff *cbs_dequeue_soft(struct Qdisc *sch)
s64 credits;
int len;
- if (atomic64_read(&q->port_rate) == -1) {
- WARN_ONCE(1, "cbs: dequeue() called with unknown port rate.");
- return NULL;
- }
-
if (q->credits < 0) {
credits = timediff_to_credits(now - q->last, q->idleslope);
@@ -303,11 +298,19 @@ static int cbs_enable_offload(struct net_device *dev, struct cbs_sched_data *q,
static void cbs_set_port_rate(struct net_device *dev, struct cbs_sched_data *q)
{
struct ethtool_link_ksettings ecmd;
+ int speed = SPEED_10;
int port_rate = -1;
+ int err;
+
+ err = __ethtool_get_link_ksettings(dev, &ecmd);
+ if (err < 0)
+ goto skip;
+
+ if (ecmd.base.speed != SPEED_UNKNOWN)
+ speed = ecmd.base.speed;
- if (!__ethtool_get_link_ksettings(dev, &ecmd) &&
- ecmd.base.speed != SPEED_UNKNOWN)
- port_rate = ecmd.base.speed * 1000 * BYTES_PER_KBIT;
+skip:
+ port_rate = speed * 1000 * BYTES_PER_KBIT;
atomic64_set(&q->port_rate, port_rate);
netdev_dbg(dev, "cbs: set %s's port_rate to: %lld, linkspeed: %d\n",