Commit 34738452 authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

net: sched: cls_flower: propagate chain teplate creation and destruction to drivers



Introduce a couple of flower offload commands in order to propagate
template creation/destruction events down to device drivers.
Drivers may use this information to prepare HW in an optimal way
for future filter insertions.

Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b95ec7eb
......@@ -721,6 +721,8 @@ enum tc_fl_command {
TC_CLSFLOWER_REPLACE,
TC_CLSFLOWER_DESTROY,
TC_CLSFLOWER_STATS,
TC_CLSFLOWER_TMPLT_CREATE,
TC_CLSFLOWER_TMPLT_DESTROY,
};
struct tc_cls_flower_offload {
......
......@@ -1194,6 +1194,42 @@ static int fl_reoffload(struct tcf_proto *tp, bool add, tc_setup_cb_t *cb,
return 0;
}
static void fl_hw_create_tmplt(struct tcf_chain *chain,
struct fl_flow_tmplt *tmplt)
{
struct tc_cls_flower_offload cls_flower = {};
struct tcf_block *block = chain->block;
struct tcf_exts dummy_exts = { 0, };
cls_flower.common.chain_index = chain->index;
cls_flower.command = TC_CLSFLOWER_TMPLT_CREATE;
cls_flower.cookie = (unsigned long) tmplt;
cls_flower.dissector = &tmplt->dissector;
cls_flower.mask = &tmplt->mask;
cls_flower.key = &tmplt->dummy_key;
cls_flower.exts = &dummy_exts;
/* We don't care if driver (any of them) fails to handle this
* call. It serves just as a hint for it.
*/
tc_setup_cb_call(block, NULL, TC_SETUP_CLSFLOWER,
&cls_flower, false);
}
static void fl_hw_destroy_tmplt(struct tcf_chain *chain,
struct fl_flow_tmplt *tmplt)
{
struct tc_cls_flower_offload cls_flower = {};
struct tcf_block *block = chain->block;
cls_flower.common.chain_index = chain->index;
cls_flower.command = TC_CLSFLOWER_TMPLT_DESTROY;
cls_flower.cookie = (unsigned long) tmplt;
tc_setup_cb_call(block, NULL, TC_SETUP_CLSFLOWER,
&cls_flower, false);
}
static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
struct nlattr **tca,
struct netlink_ext_ack *extack)
......@@ -1224,6 +1260,8 @@ static void *fl_tmplt_create(struct net *net, struct tcf_chain *chain,
fl_init_dissector(&tmplt->dissector, &tmplt->mask);
fl_hw_create_tmplt(chain, tmplt);
return tmplt;
errout_tmplt:
......@@ -1237,6 +1275,7 @@ static void fl_tmplt_destroy(void *tmplt_priv)
{
struct fl_flow_tmplt *tmplt = tmplt_priv;
fl_hw_destroy_tmplt(tmplt->chain, tmplt);
kfree(tmplt);
}
......
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