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Guillaume Nault 61aec25a6d cls_flower: Support filtering on multiple MPLS Label Stack Entries 
With struct flow_dissector_key_mpls now recording the first
FLOW_DIS_MPLS_MAX labels, we can extend Flower to filter on any of
these LSEs independently.

In order to avoid creating new netlink attributes for every possible
depth, let's define a new TCA_FLOWER_KEY_MPLS_OPTS nested attribute
that contains the list of LSEs to match. Each LSE is represented by
another attribute, TCA_FLOWER_KEY_MPLS_OPTS_LSE, which then contains
the attributes representing the depth and the MPLS fields to match at
this depth (label, TTL, etc.).

For each MPLS field, the mask is always set to all-ones, as this is
what the original API did. We could allow user configurable masks in
the future if there is demand for more flexibility.

The new API also allows to only specify an LSE depth. In that case,
Flower only verifies that the MPLS label stack depth is greater or
equal to the provided depth (that is, an LSE exists at this depth).

Filters that only match on one (or more) fields of the first LSE are
dumped using the old netlink attributes, to avoid confusing user space
programs that don't understand the new API.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 15:22:58 -07:00
..
act_api.c net: sched: implement terse dump support in act 2020-05-15 10:23:11 -07:00
act_bpf.c bpf: Add socket assign support 2020-03-30 13:45:04 -07:00
act_connmark.c net: sched: update action implementations to support flags 2019-10-30 18:07:51 -07:00
act_csum.c Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 15:42:43 -08:00
act_ct.c net/sched: act_ct: update nf_conn_acct for act_ct SW offload in flowtable 2020-04-22 12:48:17 -07:00
act_ctinfo.c net: sched: act_ctinfo: fix memory leak 2020-01-19 16:02:15 +01:00
act_gact.c net: sched: update action implementations to support flags 2019-10-30 18:07:51 -07:00
act_gate.c net: qos: introduce a gate control flow action 2020-05-01 16:08:19 -07:00
act_ife.c net/sched: act_ife: initalize ife->metalist earlier 2020-01-17 10:58:15 +01:00
act_ipt.c net: sched: update action implementations to support flags 2019-10-30 18:07:51 -07:00
act_meta_mark.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
act_meta_skbprio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
act_meta_skbtcindex.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
act_mirred.c net: Fix CONFIG_NET_CLS_ACT=n and CONFIG_NFT_FWD_NETDEV={y, m} build 2020-03-25 12:24:33 -07:00
act_mpls.c net: Fixed updating of ethertype in skb_mpls_push() 2019-12-04 17:11:25 -08:00
act_nat.c icmp: remove duplicate code 2019-11-05 14:03:11 -08:00
act_pedit.c sched: act_pedit: Implement stats_update callback 2020-03-26 19:20:37 -07:00
act_police.c Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 15:42:43 -08:00
act_sample.c net: sched: lock action when translating it to flow_action infra 2020-02-17 14:17:02 -08:00
act_simple.c net_sched: extend packet counter to 64bit 2019-11-05 18:20:55 -08:00
act_skbedit.c sched: act_skbedit: Implement stats_update callback 2020-03-26 19:20:37 -07:00
act_skbmod.c net: sched: update action implementations to support flags 2019-10-30 18:07:51 -07:00
act_tunnel_key.c Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 15:42:43 -08:00
act_vlan.c Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 15:42:43 -08:00
cls_api.c net: sched: implement terse dump support in act 2020-05-15 10:23:11 -07:00
cls_basic.c net_sched: fix ops->bind_class() implementations 2020-01-27 10:51:43 +01:00
cls_bpf.c net_sched: fix ops->bind_class() implementations 2020-01-27 10:51:43 +01:00
cls_cgroup.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cls_flow.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cls_flower.c cls_flower: Support filtering on multiple MPLS Label Stack Entries 2020-05-26 15:22:58 -07:00
cls_fw.c net_sched: fix ops->bind_class() implementations 2020-01-27 10:51:43 +01:00
cls_matchall.c net: sched: expose HW stats types per action used by drivers 2020-03-30 11:06:49 -07:00
cls_route.c net_sched: cls_route: remove the right filter from hashtable 2020-03-16 01:59:32 -07:00
cls_rsvp6.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cls_rsvp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cls_rsvp.h cls_rsvp: fix rsvp_policy 2020-02-01 12:25:06 -08:00
cls_tcindex.c net_sched: fix a missing refcnt in tcindex_init() 2020-04-03 16:00:08 -07:00
cls_u32.c net_sched: fix ops->bind_class() implementations 2020-01-27 10:51:43 +01:00
em_canid.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 11 2019-05-21 11:28:45 +02:00
em_cmp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
em_ipset.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
em_ipt.c net: sched : Remove unnecessary cast in kfree 2020-04-23 15:50:50 -07:00
em_meta.c net: annotate lockless accesses to sk->sk_max_ack_backlog 2019-11-06 16:14:48 -08:00
em_nbyte.c net: sched: Replace zero-length array with flexible-array member 2020-02-29 21:27:02 -08:00
em_text.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
em_u32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ematch.c net_sched: ematch: reject invalid TCF_EM_SIMPLE 2020-01-27 10:55:26 +01:00
Kconfig net: qos: introduce a gate control flow action 2020-05-01 16:08:19 -07:00
Makefile net: qos: introduce a gate control flow action 2020-05-01 16:08:19 -07:00
sch_api.c net_sched: do not reprogram a timer about to expire 2020-03-17 21:16:35 -07:00
sch_atm.c net: sched: Replace zero-length array with flexible-array member 2020-02-29 21:27:02 -08:00
sch_blackhole.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sch_cake.c net: sched: use skb_list_walk_safe helper for gso segments 2020-01-14 11:48:41 -08:00
sch_cbq.c sch_cbq: validate TCA_CBQ_WRROPT to avoid crash 2019-09-30 11:07:46 -07:00
sch_cbs.c net: cbs: Fix software cbs to consider packet sending time 2020-03-24 16:14:05 -07:00
sch_choke.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-06 22:10:13 -07:00
sch_codel.c net: sched: Fix a possible null-pointer dereference in dequeue_func() 2019-07-29 09:46:58 -07:00
sch_drr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sch_dsmark.c sch_dsmark: fix potential NULL deref in dsmark_init() 2019-10-04 18:28:30 -07:00
sch_etf.c sched: etf: do not assume all sockets are full blown 2020-04-22 19:20:28 -07:00
sch_ets.c net: sch_ets: Make the ETS qdisc offloadable 2019-12-18 13:32:29 -08:00
sch_fifo.c net: sched: Make FIFO Qdisc offloadable 2020-03-05 14:03:31 -08:00
sch_fq_codel.c fq_codel: fix TCA_FQ_CODEL_DROP_BATCH_SIZE sanity checks 2020-04-27 11:34:04 -07:00
sch_fq_pie.c pie: remove pie_vars->accu_prob_overflows 2020-03-04 13:25:55 -08:00
sch_fq.c net_sched: sch_fq: add horizon attribute 2020-05-04 11:56:17 -07:00
sch_generic.c net: partially revert dynamic lockdep key changes 2020-05-04 12:05:56 -07:00
sch_gred.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sch_hfsc.c netlink: make validation more configurable for future strictness 2019-04-27 17:07:21 -04:00
sch_hhf.c net/flow_dissector: switch to siphash 2019-10-23 20:13:22 -07:00
sch_htb.c net: sched: sch_htb: don't call qdisc_put() while holding tree lock 2019-09-27 12:13:55 +02:00
sch_ingress.c net: sched: Pass ingress block to tcf_classify_ingress 2020-02-19 17:49:48 -08:00
sch_mq.c net: sched: fix dump qlen for sch_mq/sch_mqprio with NOLOCK subqueues 2019-12-03 11:53:55 -08:00
sch_mqprio.c mqprio: Fix out-of-bounds access in mqprio_dump 2019-12-06 11:58:45 -08:00
sch_multiq.c net: sched: fix tc -s class show no bstats on class with nolock subqueues 2019-11-30 10:38:40 -08:00
sch_netem.c net: sched: Replace zero-length array with flexible-array member 2020-02-29 21:27:02 -08:00
sch_pie.c net: sched: pie: change tc_pie_xstats->prob 2020-03-09 18:05:55 -07:00
sch_plug.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sch_prio.c net: sch_prio: When ungrafting, replace with FIFO 2020-01-08 12:45:53 -08:00
sch_qfq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sch_red.c netlink: remove type-unsafe validation_data pointer 2020-04-30 17:51:41 -07:00
sch_sfb.c net/flow_dissector: switch to siphash 2019-10-23 20:13:22 -07:00
sch_sfq.c sch_sfq: validate silly quantum values 2020-04-27 11:49:57 -07:00
sch_skbprio.c net_sched: sch_skbprio: add message validation to skbprio_change() 2020-05-03 15:52:13 -07:00
sch_taprio.c taprio: Fix sending packets without dequeueing them 2020-03-12 11:25:08 -07:00
sch_tbf.c net: sched: Make TBF Qdisc offloadable 2020-01-25 10:56:31 +01:00
sch_teql.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00