diff options
author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2018-11-19 15:21:42 -0800 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2018-11-19 18:53:45 -0800 |
commit | 890d8d23ec3c9eca847be0593c0cf5f650b97271 (patch) | |
tree | 725e5fc572a368df1337b25042453887b7a4121a /net | |
parent | 184ec856cad966688e98072a1a7edae6af5d23f3 (diff) |
net: sched: gred: add basic Qdisc offload
Add basic offload for the GRED Qdisc. Inform the drivers any
time Qdisc or virtual queue configuration changes.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r-- | net/sched/sch_gred.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c index 8b8c325f48bc..908c9d1dfdf8 100644 --- a/net/sched/sch_gred.c +++ b/net/sched/sch_gred.c @@ -23,6 +23,7 @@ #include <linux/types.h> #include <linux/kernel.h> #include <linux/skbuff.h> +#include <net/pkt_cls.h> #include <net/pkt_sched.h> #include <net/red.h> @@ -311,6 +312,48 @@ static void gred_reset(struct Qdisc *sch) } } +static void gred_offload(struct Qdisc *sch, enum tc_gred_command command) +{ + struct gred_sched *table = qdisc_priv(sch); + struct net_device *dev = qdisc_dev(sch); + struct tc_gred_qopt_offload opt = { + .command = command, + .handle = sch->handle, + .parent = sch->parent, + }; + + if (!tc_can_offload(dev) || !dev->netdev_ops->ndo_setup_tc) + return; + + if (command == TC_GRED_REPLACE) { + unsigned int i; + + opt.set.grio_on = gred_rio_mode(table); + opt.set.wred_on = gred_wred_mode(table); + opt.set.dp_cnt = table->DPs; + opt.set.dp_def = table->def; + + for (i = 0; i < table->DPs; i++) { + struct gred_sched_data *q = table->tab[i]; + + if (!q) + continue; + opt.set.tab[i].present = true; + opt.set.tab[i].limit = q->limit; + opt.set.tab[i].prio = q->prio; + opt.set.tab[i].min = q->parms.qth_min >> q->parms.Wlog; + opt.set.tab[i].max = q->parms.qth_max >> q->parms.Wlog; + opt.set.tab[i].is_ecn = gred_use_ecn(q); + opt.set.tab[i].is_harddrop = gred_use_harddrop(q); + opt.set.tab[i].probability = q->parms.max_P; + opt.set.tab[i].backlog = &q->backlog; + } + opt.set.qstats = &sch->qstats; + } + + dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_QDISC_GRED, &opt); +} + static inline void gred_destroy_vq(struct gred_sched_data *q) { kfree(q); @@ -385,6 +428,7 @@ static int gred_change_table_def(struct Qdisc *sch, struct nlattr *dps, } } + gred_offload(sch, TC_GRED_REPLACE); return 0; } @@ -630,6 +674,8 @@ static int gred_change(struct Qdisc *sch, struct nlattr *opt, sch_tree_unlock(sch); kfree(prealloc); + + gred_offload(sch, TC_GRED_REPLACE); return 0; err_unlock_free: @@ -815,6 +861,7 @@ static void gred_destroy(struct Qdisc *sch) if (table->tab[i]) gred_destroy_vq(table->tab[i]); } + gred_offload(sch, TC_GRED_DESTROY); } static struct Qdisc_ops gred_qdisc_ops __read_mostly = { |