diff options
| -rw-r--r-- | include/linux/netdevice.h | 1 | ||||
| -rw-r--r-- | include/net/pkt_cls.h | 31 | ||||
| -rw-r--r-- | net/sched/sch_ets.c | 95 |
3 files changed, 127 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 30745068fb39..7a8ed11f5d45 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -849,6 +849,7 @@ enum tc_setup_type { TC_SETUP_QDISC_GRED, TC_SETUP_QDISC_TAPRIO, TC_SETUP_FT, + TC_SETUP_QDISC_ETS, }; /* These structures hold the attributes of bpf state that are being passed diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h index a7c5d492bc04..47b115e2012a 100644 --- a/include/net/pkt_cls.h +++ b/include/net/pkt_cls.h @@ -823,4 +823,35 @@ struct tc_root_qopt_offload { bool ingress; }; +enum tc_ets_command { + TC_ETS_REPLACE, + TC_ETS_DESTROY, + TC_ETS_STATS, + TC_ETS_GRAFT, +}; + +struct tc_ets_qopt_offload_replace_params { + unsigned int bands; + u8 priomap[TC_PRIO_MAX + 1]; + unsigned int quanta[TCQ_ETS_MAX_BANDS]; /* 0 for strict bands. */ + unsigned int weights[TCQ_ETS_MAX_BANDS]; + struct gnet_stats_queue *qstats; +}; + +struct tc_ets_qopt_offload_graft_params { + u8 band; + u32 child_handle; +}; + +struct tc_ets_qopt_offload { + enum tc_ets_command command; + u32 handle; + u32 parent; + union { + struct tc_ets_qopt_offload_replace_params replace_params; + struct tc_qopt_offload_stats stats; + struct tc_ets_qopt_offload_graft_params graft_params; + }; +}; + #endif diff --git a/net/sched/sch_ets.c b/net/sched/sch_ets.c index e6194b23e9b0..a87e9159338c 100644 --- a/net/sched/sch_ets.c +++ b/net/sched/sch_ets.c @@ -102,6 +102,91 @@ static u32 ets_class_id(struct Qdisc *sch, const struct ets_class *cl) return TC_H_MAKE(sch->handle, band + 1); } +static void ets_offload_change(struct Qdisc *sch) +{ + struct net_device *dev = qdisc_dev(sch); + struct ets_sched *q = qdisc_priv(sch); + struct tc_ets_qopt_offload qopt; + unsigned int w_psum_prev = 0; + unsigned int q_psum = 0; + unsigned int q_sum = 0; + unsigned int quantum; + unsigned int w_psum; + unsigned int weight; + unsigned int i; + + if (!tc_can_offload(dev) || !dev->netdev_ops->ndo_setup_tc) + return; + + qopt.command = TC_ETS_REPLACE; + qopt.handle = sch->handle; + qopt.parent = sch->parent; + qopt.replace_params.bands = q->nbands; + qopt.replace_params.qstats = &sch->qstats; + memcpy(&qopt.replace_params.priomap, + q->prio2band, sizeof(q->prio2band)); + + for (i = 0; i < q->nbands; i++) + q_sum += q->classes[i].quantum; + + for (i = 0; i < q->nbands; i++) { + quantum = q->classes[i].quantum; + q_psum += quantum; + w_psum = quantum ? q_psum * 100 / q_sum : 0; + weight = w_psum - w_psum_prev; + w_psum_prev = w_psum; + + qopt.replace_params.quanta[i] = quantum; + qopt.replace_params.weights[i] = weight; + } + + dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_QDISC_ETS, &qopt); +} + +static void ets_offload_destroy(struct Qdisc *sch) +{ + struct net_device *dev = qdisc_dev(sch); + struct tc_ets_qopt_offload qopt; + + if (!tc_can_offload(dev) || !dev->netdev_ops->ndo_setup_tc) + return; + + qopt.command = TC_ETS_DESTROY; + qopt.handle = sch->handle; + qopt.parent = sch->parent; + dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_QDISC_ETS, &qopt); +} + +static void ets_offload_graft(struct Qdisc *sch, struct Qdisc *new, + struct Qdisc *old, unsigned long arg, + struct netlink_ext_ack *extack) +{ + struct net_device *dev = qdisc_dev(sch); + struct tc_ets_qopt_offload qopt; + + qopt.command = TC_ETS_GRAFT; + qopt.handle = sch->handle; + qopt.parent = sch->parent; + qopt.graft_params.band = arg - 1; + qopt.graft_params.child_handle = new->handle; + + qdisc_offload_graft_helper(dev, sch, new, old, TC_SETUP_QDISC_ETS, + &qopt, extack); +} + +static int ets_offload_dump(struct Qdisc *sch) +{ + struct tc_ets_qopt_offload qopt; + + qopt.command = TC_ETS_STATS; + qopt.handle = sch->handle; + qopt.parent = sch->parent; + qopt.stats.bstats = &sch->bstats; + qopt.stats.qstats = &sch->qstats; + + return qdisc_offload_dump_helper(sch, TC_SETUP_QDISC_ETS, &qopt); +} + static bool ets_class_is_strict(struct ets_sched *q, const struct ets_class *cl) { unsigned int band = cl - q->classes; @@ -154,6 +239,8 @@ static int ets_class_change(struct Qdisc *sch, u32 classid, u32 parentid, sch_tree_lock(sch); cl->quantum = quantum; sch_tree_unlock(sch); + + ets_offload_change(sch); return 0; } @@ -173,6 +260,7 @@ static int ets_class_graft(struct Qdisc *sch, unsigned long arg, } *old = qdisc_replace(sch, new, &cl->qdisc); + ets_offload_graft(sch, new, *old, arg, extack); return 0; } @@ -589,6 +677,7 @@ static int ets_qdisc_change(struct Qdisc *sch, struct nlattr *opt, sch_tree_unlock(sch); + ets_offload_change(sch); for (i = q->nbands; i < oldbands; i++) { qdisc_put(q->classes[i].qdisc); memset(&q->classes[i], 0, sizeof(q->classes[i])); @@ -633,6 +722,7 @@ static void ets_qdisc_destroy(struct Qdisc *sch) struct ets_sched *q = qdisc_priv(sch); int band; + ets_offload_destroy(sch); tcf_block_put(q->block); for (band = 0; band < q->nbands; band++) qdisc_put(q->classes[band].qdisc); @@ -645,6 +735,11 @@ static int ets_qdisc_dump(struct Qdisc *sch, struct sk_buff *skb) struct nlattr *nest; int band; int prio; + int err; + + err = ets_offload_dump(sch); + if (err) + return err; opts = nla_nest_start_noflag(skb, TCA_OPTIONS); if (!opts) |