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nfp: abm: split qdisc offload code into a separate file
The Qdisc offload code is logically separate, and we will soon do significant surgery on it to support more Qdiscs, so move it to a separate file. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: John Hurley <john.hurley@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski
David S. Miller
parent
1106a5ade1
commit
47330f9bdf
@ -57,6 +57,7 @@ endif
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ifeq ($(CONFIG_NFP_APP_ABM_NIC),y)
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nfp-objs += \
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abm/ctrl.o \
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abm/qdisc.o \
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abm/main.o
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endif
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@ -7,9 +7,6 @@
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#include <linux/netdevice.h>
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#include <linux/rcupdate.h>
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#include <linux/slab.h>
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#include <net/pkt_cls.h>
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#include <net/pkt_sched.h>
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#include <net/red.h>
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#include "../nfpcore/nfp.h"
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#include "../nfpcore/nfp_cpp.h"
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@ -27,269 +24,6 @@ static u32 nfp_abm_portid(enum nfp_repr_type rtype, unsigned int id)
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FIELD_PREP(NFP_ABM_PORTID_ID, id);
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}
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static int
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__nfp_abm_reset_root(struct net_device *netdev, struct nfp_abm_link *alink,
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u32 handle, unsigned int qs, u32 init_val)
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{
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struct nfp_port *port = nfp_port_from_netdev(netdev);
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int ret;
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ret = nfp_abm_ctrl_set_all_q_lvls(alink, init_val);
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memset(alink->qdiscs, 0, sizeof(*alink->qdiscs) * alink->num_qdiscs);
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alink->parent = handle;
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alink->num_qdiscs = qs;
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port->tc_offload_cnt = qs;
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return ret;
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}
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static void
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nfp_abm_reset_root(struct net_device *netdev, struct nfp_abm_link *alink,
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u32 handle, unsigned int qs)
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{
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__nfp_abm_reset_root(netdev, alink, handle, qs, ~0);
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}
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static int
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nfp_abm_red_find(struct nfp_abm_link *alink, struct tc_red_qopt_offload *opt)
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{
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unsigned int i = TC_H_MIN(opt->parent) - 1;
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if (opt->parent == TC_H_ROOT)
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i = 0;
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else if (TC_H_MAJ(alink->parent) == TC_H_MAJ(opt->parent))
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i = TC_H_MIN(opt->parent) - 1;
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else
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return -EOPNOTSUPP;
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if (i >= alink->num_qdiscs || opt->handle != alink->qdiscs[i].handle)
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return -EOPNOTSUPP;
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return i;
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}
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static void
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nfp_abm_red_destroy(struct net_device *netdev, struct nfp_abm_link *alink,
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u32 handle)
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{
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unsigned int i;
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for (i = 0; i < alink->num_qdiscs; i++)
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if (handle == alink->qdiscs[i].handle)
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break;
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if (i == alink->num_qdiscs)
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return;
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if (alink->parent == TC_H_ROOT) {
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nfp_abm_reset_root(netdev, alink, TC_H_ROOT, 0);
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} else {
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nfp_abm_ctrl_set_q_lvl(alink, i, ~0);
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memset(&alink->qdiscs[i], 0, sizeof(*alink->qdiscs));
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}
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}
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static int
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nfp_abm_red_replace(struct net_device *netdev, struct nfp_abm_link *alink,
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struct tc_red_qopt_offload *opt)
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{
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bool existing;
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int i, err;
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i = nfp_abm_red_find(alink, opt);
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existing = i >= 0;
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if (opt->set.min != opt->set.max || !opt->set.is_ecn) {
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nfp_warn(alink->abm->app->cpp,
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"RED offload failed - unsupported parameters\n");
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err = -EINVAL;
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goto err_destroy;
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}
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if (existing) {
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if (alink->parent == TC_H_ROOT)
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err = nfp_abm_ctrl_set_all_q_lvls(alink, opt->set.min);
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else
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err = nfp_abm_ctrl_set_q_lvl(alink, i, opt->set.min);
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if (err)
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goto err_destroy;
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return 0;
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}
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if (opt->parent == TC_H_ROOT) {
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i = 0;
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err = __nfp_abm_reset_root(netdev, alink, TC_H_ROOT, 1,
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opt->set.min);
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} else if (TC_H_MAJ(alink->parent) == TC_H_MAJ(opt->parent)) {
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i = TC_H_MIN(opt->parent) - 1;
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err = nfp_abm_ctrl_set_q_lvl(alink, i, opt->set.min);
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} else {
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return -EINVAL;
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}
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/* Set the handle to try full clean up, in case IO failed */
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alink->qdiscs[i].handle = opt->handle;
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if (err)
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goto err_destroy;
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if (opt->parent == TC_H_ROOT)
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err = nfp_abm_ctrl_read_stats(alink, &alink->qdiscs[i].stats);
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else
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err = nfp_abm_ctrl_read_q_stats(alink, i,
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&alink->qdiscs[i].stats);
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if (err)
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goto err_destroy;
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if (opt->parent == TC_H_ROOT)
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err = nfp_abm_ctrl_read_xstats(alink,
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&alink->qdiscs[i].xstats);
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else
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err = nfp_abm_ctrl_read_q_xstats(alink, i,
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&alink->qdiscs[i].xstats);
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if (err)
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goto err_destroy;
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alink->qdiscs[i].stats.backlog_pkts = 0;
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alink->qdiscs[i].stats.backlog_bytes = 0;
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return 0;
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err_destroy:
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/* If the qdisc keeps on living, but we can't offload undo changes */
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if (existing) {
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opt->set.qstats->qlen -= alink->qdiscs[i].stats.backlog_pkts;
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opt->set.qstats->backlog -=
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alink->qdiscs[i].stats.backlog_bytes;
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}
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nfp_abm_red_destroy(netdev, alink, opt->handle);
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return err;
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}
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static void
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nfp_abm_update_stats(struct nfp_alink_stats *new, struct nfp_alink_stats *old,
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struct tc_qopt_offload_stats *stats)
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{
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_bstats_update(stats->bstats, new->tx_bytes - old->tx_bytes,
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new->tx_pkts - old->tx_pkts);
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stats->qstats->qlen += new->backlog_pkts - old->backlog_pkts;
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stats->qstats->backlog += new->backlog_bytes - old->backlog_bytes;
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stats->qstats->overlimits += new->overlimits - old->overlimits;
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stats->qstats->drops += new->drops - old->drops;
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}
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static int
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nfp_abm_red_stats(struct nfp_abm_link *alink, struct tc_red_qopt_offload *opt)
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{
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struct nfp_alink_stats *prev_stats;
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struct nfp_alink_stats stats;
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int i, err;
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i = nfp_abm_red_find(alink, opt);
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if (i < 0)
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return i;
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prev_stats = &alink->qdiscs[i].stats;
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if (alink->parent == TC_H_ROOT)
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err = nfp_abm_ctrl_read_stats(alink, &stats);
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else
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err = nfp_abm_ctrl_read_q_stats(alink, i, &stats);
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if (err)
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return err;
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nfp_abm_update_stats(&stats, prev_stats, &opt->stats);
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*prev_stats = stats;
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return 0;
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}
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static int
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nfp_abm_red_xstats(struct nfp_abm_link *alink, struct tc_red_qopt_offload *opt)
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{
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struct nfp_alink_xstats *prev_xstats;
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struct nfp_alink_xstats xstats;
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int i, err;
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i = nfp_abm_red_find(alink, opt);
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if (i < 0)
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return i;
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prev_xstats = &alink->qdiscs[i].xstats;
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if (alink->parent == TC_H_ROOT)
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err = nfp_abm_ctrl_read_xstats(alink, &xstats);
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else
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err = nfp_abm_ctrl_read_q_xstats(alink, i, &xstats);
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if (err)
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return err;
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opt->xstats->forced_mark += xstats.ecn_marked - prev_xstats->ecn_marked;
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opt->xstats->pdrop += xstats.pdrop - prev_xstats->pdrop;
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*prev_xstats = xstats;
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return 0;
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}
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static int
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nfp_abm_setup_tc_red(struct net_device *netdev, struct nfp_abm_link *alink,
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struct tc_red_qopt_offload *opt)
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{
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switch (opt->command) {
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case TC_RED_REPLACE:
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return nfp_abm_red_replace(netdev, alink, opt);
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case TC_RED_DESTROY:
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nfp_abm_red_destroy(netdev, alink, opt->handle);
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return 0;
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case TC_RED_STATS:
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return nfp_abm_red_stats(alink, opt);
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case TC_RED_XSTATS:
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return nfp_abm_red_xstats(alink, opt);
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default:
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return -EOPNOTSUPP;
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}
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}
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static int
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nfp_abm_mq_stats(struct nfp_abm_link *alink, struct tc_mq_qopt_offload *opt)
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{
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struct nfp_alink_stats stats;
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unsigned int i;
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int err;
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for (i = 0; i < alink->num_qdiscs; i++) {
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if (alink->qdiscs[i].handle == TC_H_UNSPEC)
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continue;
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err = nfp_abm_ctrl_read_q_stats(alink, i, &stats);
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if (err)
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return err;
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nfp_abm_update_stats(&stats, &alink->qdiscs[i].stats,
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&opt->stats);
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}
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return 0;
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}
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static int
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nfp_abm_setup_tc_mq(struct net_device *netdev, struct nfp_abm_link *alink,
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struct tc_mq_qopt_offload *opt)
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{
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switch (opt->command) {
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case TC_MQ_CREATE:
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nfp_abm_reset_root(netdev, alink, opt->handle,
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alink->total_queues);
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return 0;
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case TC_MQ_DESTROY:
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if (opt->handle == alink->parent)
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nfp_abm_reset_root(netdev, alink, TC_H_ROOT, 0);
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return 0;
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case TC_MQ_STATS:
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return nfp_abm_mq_stats(alink, opt);
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default:
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return -EOPNOTSUPP;
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}
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}
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static int
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nfp_abm_setup_tc(struct nfp_app *app, struct net_device *netdev,
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enum tc_setup_type type, void *type_data)
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@ -5,6 +5,7 @@
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#define __NFP_ABM_H__ 1
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#include <net/devlink.h>
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#include <net/pkt_cls.h>
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struct nfp_app;
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struct nfp_net;
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@ -91,6 +92,11 @@ struct nfp_abm_link {
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struct nfp_red_qdisc *qdiscs;
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};
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int nfp_abm_setup_tc_red(struct net_device *netdev, struct nfp_abm_link *alink,
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struct tc_red_qopt_offload *opt);
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int nfp_abm_setup_tc_mq(struct net_device *netdev, struct nfp_abm_link *alink,
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struct tc_mq_qopt_offload *opt);
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void nfp_abm_ctrl_read_params(struct nfp_abm_link *alink);
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int nfp_abm_ctrl_find_addrs(struct nfp_abm *abm);
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int nfp_abm_ctrl_set_all_q_lvls(struct nfp_abm_link *alink, u32 val);
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272
drivers/net/ethernet/netronome/nfp/abm/qdisc.c
Normal file
272
drivers/net/ethernet/netronome/nfp/abm/qdisc.c
Normal file
@ -0,0 +1,272 @@
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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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/* Copyright (C) 2018 Netronome Systems, Inc. */
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#include <net/pkt_cls.h>
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#include <net/pkt_sched.h>
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#include <net/red.h>
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#include "../nfpcore/nfp_cpp.h"
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#include "../nfp_app.h"
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#include "../nfp_port.h"
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#include "main.h"
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static int
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__nfp_abm_reset_root(struct net_device *netdev, struct nfp_abm_link *alink,
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u32 handle, unsigned int qs, u32 init_val)
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{
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struct nfp_port *port = nfp_port_from_netdev(netdev);
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int ret;
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ret = nfp_abm_ctrl_set_all_q_lvls(alink, init_val);
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memset(alink->qdiscs, 0, sizeof(*alink->qdiscs) * alink->num_qdiscs);
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alink->parent = handle;
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alink->num_qdiscs = qs;
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port->tc_offload_cnt = qs;
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return ret;
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}
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static void
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nfp_abm_reset_root(struct net_device *netdev, struct nfp_abm_link *alink,
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u32 handle, unsigned int qs)
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{
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__nfp_abm_reset_root(netdev, alink, handle, qs, ~0);
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}
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static int
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nfp_abm_red_find(struct nfp_abm_link *alink, struct tc_red_qopt_offload *opt)
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{
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unsigned int i = TC_H_MIN(opt->parent) - 1;
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if (opt->parent == TC_H_ROOT)
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i = 0;
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else if (TC_H_MAJ(alink->parent) == TC_H_MAJ(opt->parent))
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i = TC_H_MIN(opt->parent) - 1;
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else
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return -EOPNOTSUPP;
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if (i >= alink->num_qdiscs || opt->handle != alink->qdiscs[i].handle)
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return -EOPNOTSUPP;
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return i;
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}
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static void
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nfp_abm_red_destroy(struct net_device *netdev, struct nfp_abm_link *alink,
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u32 handle)
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{
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unsigned int i;
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for (i = 0; i < alink->num_qdiscs; i++)
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if (handle == alink->qdiscs[i].handle)
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break;
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if (i == alink->num_qdiscs)
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return;
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if (alink->parent == TC_H_ROOT) {
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nfp_abm_reset_root(netdev, alink, TC_H_ROOT, 0);
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} else {
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nfp_abm_ctrl_set_q_lvl(alink, i, ~0);
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memset(&alink->qdiscs[i], 0, sizeof(*alink->qdiscs));
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}
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}
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static int
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nfp_abm_red_replace(struct net_device *netdev, struct nfp_abm_link *alink,
|
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struct tc_red_qopt_offload *opt)
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{
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bool existing;
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int i, err;
|
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|
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i = nfp_abm_red_find(alink, opt);
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existing = i >= 0;
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if (opt->set.min != opt->set.max || !opt->set.is_ecn) {
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nfp_warn(alink->abm->app->cpp,
|
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"RED offload failed - unsupported parameters\n");
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err = -EINVAL;
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goto err_destroy;
|
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}
|
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|
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if (existing) {
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if (alink->parent == TC_H_ROOT)
|
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err = nfp_abm_ctrl_set_all_q_lvls(alink, opt->set.min);
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else
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err = nfp_abm_ctrl_set_q_lvl(alink, i, opt->set.min);
|
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if (err)
|
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goto err_destroy;
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return 0;
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}
|
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|
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if (opt->parent == TC_H_ROOT) {
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i = 0;
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err = __nfp_abm_reset_root(netdev, alink, TC_H_ROOT, 1,
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opt->set.min);
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} else if (TC_H_MAJ(alink->parent) == TC_H_MAJ(opt->parent)) {
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i = TC_H_MIN(opt->parent) - 1;
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err = nfp_abm_ctrl_set_q_lvl(alink, i, opt->set.min);
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} else {
|
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return -EINVAL;
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}
|
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/* Set the handle to try full clean up, in case IO failed */
|
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alink->qdiscs[i].handle = opt->handle;
|
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if (err)
|
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goto err_destroy;
|
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|
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if (opt->parent == TC_H_ROOT)
|
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err = nfp_abm_ctrl_read_stats(alink, &alink->qdiscs[i].stats);
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else
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err = nfp_abm_ctrl_read_q_stats(alink, i,
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&alink->qdiscs[i].stats);
|
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if (err)
|
||||
goto err_destroy;
|
||||
|
||||
if (opt->parent == TC_H_ROOT)
|
||||
err = nfp_abm_ctrl_read_xstats(alink,
|
||||
&alink->qdiscs[i].xstats);
|
||||
else
|
||||
err = nfp_abm_ctrl_read_q_xstats(alink, i,
|
||||
&alink->qdiscs[i].xstats);
|
||||
if (err)
|
||||
goto err_destroy;
|
||||
|
||||
alink->qdiscs[i].stats.backlog_pkts = 0;
|
||||
alink->qdiscs[i].stats.backlog_bytes = 0;
|
||||
|
||||
return 0;
|
||||
err_destroy:
|
||||
/* If the qdisc keeps on living, but we can't offload undo changes */
|
||||
if (existing) {
|
||||
opt->set.qstats->qlen -= alink->qdiscs[i].stats.backlog_pkts;
|
||||
opt->set.qstats->backlog -=
|
||||
alink->qdiscs[i].stats.backlog_bytes;
|
||||
}
|
||||
nfp_abm_red_destroy(netdev, alink, opt->handle);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static void
|
||||
nfp_abm_update_stats(struct nfp_alink_stats *new, struct nfp_alink_stats *old,
|
||||
struct tc_qopt_offload_stats *stats)
|
||||
{
|
||||
_bstats_update(stats->bstats, new->tx_bytes - old->tx_bytes,
|
||||
new->tx_pkts - old->tx_pkts);
|
||||
stats->qstats->qlen += new->backlog_pkts - old->backlog_pkts;
|
||||
stats->qstats->backlog += new->backlog_bytes - old->backlog_bytes;
|
||||
stats->qstats->overlimits += new->overlimits - old->overlimits;
|
||||
stats->qstats->drops += new->drops - old->drops;
|
||||
}
|
||||
|
||||
static int
|
||||
nfp_abm_red_stats(struct nfp_abm_link *alink, struct tc_red_qopt_offload *opt)
|
||||
{
|
||||
struct nfp_alink_stats *prev_stats;
|
||||
struct nfp_alink_stats stats;
|
||||
int i, err;
|
||||
|
||||
i = nfp_abm_red_find(alink, opt);
|
||||
if (i < 0)
|
||||
return i;
|
||||
prev_stats = &alink->qdiscs[i].stats;
|
||||
|
||||
if (alink->parent == TC_H_ROOT)
|
||||
err = nfp_abm_ctrl_read_stats(alink, &stats);
|
||||
else
|
||||
err = nfp_abm_ctrl_read_q_stats(alink, i, &stats);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
nfp_abm_update_stats(&stats, prev_stats, &opt->stats);
|
||||
|
||||
*prev_stats = stats;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
nfp_abm_red_xstats(struct nfp_abm_link *alink, struct tc_red_qopt_offload *opt)
|
||||
{
|
||||
struct nfp_alink_xstats *prev_xstats;
|
||||
struct nfp_alink_xstats xstats;
|
||||
int i, err;
|
||||
|
||||
i = nfp_abm_red_find(alink, opt);
|
||||
if (i < 0)
|
||||
return i;
|
||||
prev_xstats = &alink->qdiscs[i].xstats;
|
||||
|
||||
if (alink->parent == TC_H_ROOT)
|
||||
err = nfp_abm_ctrl_read_xstats(alink, &xstats);
|
||||
else
|
||||
err = nfp_abm_ctrl_read_q_xstats(alink, i, &xstats);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
opt->xstats->forced_mark += xstats.ecn_marked - prev_xstats->ecn_marked;
|
||||
opt->xstats->pdrop += xstats.pdrop - prev_xstats->pdrop;
|
||||
|
||||
*prev_xstats = xstats;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int nfp_abm_setup_tc_red(struct net_device *netdev, struct nfp_abm_link *alink,
|
||||
struct tc_red_qopt_offload *opt)
|
||||
{
|
||||
switch (opt->command) {
|
||||
case TC_RED_REPLACE:
|
||||
return nfp_abm_red_replace(netdev, alink, opt);
|
||||
case TC_RED_DESTROY:
|
||||
nfp_abm_red_destroy(netdev, alink, opt->handle);
|
||||
return 0;
|
||||
case TC_RED_STATS:
|
||||
return nfp_abm_red_stats(alink, opt);
|
||||
case TC_RED_XSTATS:
|
||||
return nfp_abm_red_xstats(alink, opt);
|
||||
default:
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
nfp_abm_mq_stats(struct nfp_abm_link *alink, struct tc_mq_qopt_offload *opt)
|
||||
{
|
||||
struct nfp_alink_stats stats;
|
||||
unsigned int i;
|
||||
int err;
|
||||
|
||||
for (i = 0; i < alink->num_qdiscs; i++) {
|
||||
if (alink->qdiscs[i].handle == TC_H_UNSPEC)
|
||||
continue;
|
||||
|
||||
err = nfp_abm_ctrl_read_q_stats(alink, i, &stats);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
nfp_abm_update_stats(&stats, &alink->qdiscs[i].stats,
|
||||
&opt->stats);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int nfp_abm_setup_tc_mq(struct net_device *netdev, struct nfp_abm_link *alink,
|
||||
struct tc_mq_qopt_offload *opt)
|
||||
{
|
||||
switch (opt->command) {
|
||||
case TC_MQ_CREATE:
|
||||
nfp_abm_reset_root(netdev, alink, opt->handle,
|
||||
alink->total_queues);
|
||||
return 0;
|
||||
case TC_MQ_DESTROY:
|
||||
if (opt->handle == alink->parent)
|
||||
nfp_abm_reset_root(netdev, alink, TC_H_ROOT, 0);
|
||||
return 0;
|
||||
case TC_MQ_STATS:
|
||||
return nfp_abm_mq_stats(alink, opt);
|
||||
default:
|
||||
return -EOPNOTSUPP;
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user