[PATCH net-next v7 2/3] net/sched: cls_api: Expose tc block to the datapath
From: Victor Nogueira <hidden>
Date: 2023-12-15 11:11:06
Subsystem:
networking [general], tc subsystem, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Jamal Hadi Salim, Jiri Pirko, Linus Torvalds
The datapath can now find the block of the port in which the packet arrived at. In the next patch we show a possible usage of this patch in a new version of mirred that multicasts to all ports except for the port in which the packet arrived on. Co-developed-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Co-developed-by: Pedro Tammela <redacted> Signed-off-by: Pedro Tammela <redacted> Signed-off-by: Victor Nogueira <redacted> --- include/net/sch_generic.h | 2 ++ net/sched/cls_api.c | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index cefca55dd4f9..479bc195bb0f 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h@@ -487,6 +487,8 @@ struct tcf_block { struct mutex proto_destroy_lock; /* Lock for proto_destroy hashtable. */ }; +struct tcf_block *tcf_block_lookup(struct net *net, u32 block_index); + static inline bool lockdep_tcf_chain_is_locked(struct tcf_chain *chain) { return lockdep_is_held(&chain->filter_chain_lock);
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 6020a32ecff2..618f68733012 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c@@ -1011,12 +1011,13 @@ static struct tcf_block *tcf_block_create(struct net *net, struct Qdisc *q, return block; } -static struct tcf_block *tcf_block_lookup(struct net *net, u32 block_index) +struct tcf_block *tcf_block_lookup(struct net *net, u32 block_index) { struct tcf_net *tn = net_generic(net, tcf_net_id); return idr_find(&tn->idr, block_index); } +EXPORT_SYMBOL(tcf_block_lookup); static struct tcf_block *tcf_block_refcnt_get(struct net *net, u32 block_index) {
--
2.25.1