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igb: Add the skeletons for tc-flower offloading 

This adds basic functions needed to implement offloading for filters
created by tc-flower.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Vinicius Costa Gomes 2018-04-10 10:49:58 -07:00 committed by Jeff Kirsher
parent b4a38d4276
commit f8f3d34e54
1 changed files with 66 additions and 0 deletions
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66
drivers/net/ethernet/intel/igb/igb_main.c
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@ -36,6 +36,7 @@
#include <net/checksum.h>
#include <net/ip6_checksum.h>
#include <net/pkt_sched.h>
#include <net/pkt_cls.h>
#include <linux/net_tstamp.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
@ -2513,6 +2514,69 @@ static int igb_offload_cbs(struct igb_adapter *adapter,
return 0;
}
static int igb_configure_clsflower(struct igb_adapter *adapter,
struct tc_cls_flower_offload *cls_flower)
{
return -EOPNOTSUPP;
}
static int igb_delete_clsflower(struct igb_adapter *adapter,
struct tc_cls_flower_offload *cls_flower)
{
return -EOPNOTSUPP;
}
static int igb_setup_tc_cls_flower(struct igb_adapter *adapter,
struct tc_cls_flower_offload *cls_flower)
{
switch (cls_flower->command) {
case TC_CLSFLOWER_REPLACE:
return igb_configure_clsflower(adapter, cls_flower);
case TC_CLSFLOWER_DESTROY:
return igb_delete_clsflower(adapter, cls_flower);
case TC_CLSFLOWER_STATS:
return -EOPNOTSUPP;
default:
return -EINVAL;
}
}
static int igb_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
void *cb_priv)
{
struct igb_adapter *adapter = cb_priv;
if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data))
return -EOPNOTSUPP;
switch (type) {
case TC_SETUP_CLSFLOWER:
return igb_setup_tc_cls_flower(adapter, type_data);
default:
return -EOPNOTSUPP;
}
}
static int igb_setup_tc_block(struct igb_adapter *adapter,
struct tc_block_offload *f)
{
if (f->binder_type != TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
return -EOPNOTSUPP;
switch (f->command) {
case TC_BLOCK_BIND:
return tcf_block_cb_register(f->block, igb_setup_tc_block_cb,
adapter, adapter);
case TC_BLOCK_UNBIND:
tcf_block_cb_unregister(f->block, igb_setup_tc_block_cb,
adapter);
return 0;
default:
return -EOPNOTSUPP;
}
}
static int igb_setup_tc(struct net_device *dev, enum tc_setup_type type,
void *type_data)
{
@ -2521,6 +2585,8 @@ static int igb_setup_tc(struct net_device *dev, enum tc_setup_type type,
switch (type) {
case TC_SETUP_QDISC_CBS:
return igb_offload_cbs(adapter, type_data);
case TC_SETUP_BLOCK:
return igb_setup_tc_block(adapter, type_data);
default:
return -EOPNOTSUPP;