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authorBaowen Zheng <baowen.zheng@corigine.com>2021-12-17 21:16:22 +0300
committerDavid S. Miller <davem@davemloft.net>2021-12-19 17:08:48 +0300
commit8cbfe939abe905280279e84a297b1cb34e0d0ec9 (patch)
tree9c9e2dad06886bd0834d16071aa2faccdc20d99d /net/sched
parentc54e1d920f04d528ab558f09326a78d2ae59e323 (diff)
downloadlinux-8cbfe939abe905280279e84a297b1cb34e0d0ec9.tar.xz
flow_offload: allow user to offload tc action to net device
Use flow_indr_dev_register/flow_indr_dev_setup_offload to offload tc action. We need to call tc_cleanup_flow_action to clean up tc action entry since in tc_setup_action, some actions may hold dev refcnt, especially the mirror action. Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com> Signed-off-by: Louis Peens <louis.peens@corigine.com> Signed-off-by: Simon Horman <simon.horman@corigine.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/act_api.c93
-rw-r--r--net/sched/act_csum.c4
-rw-r--r--net/sched/act_ct.c4
-rw-r--r--net/sched/act_gact.c13
-rw-r--r--net/sched/act_gate.c4
-rw-r--r--net/sched/act_mirred.c13
-rw-r--r--net/sched/act_mpls.c16
-rw-r--r--net/sched/act_police.c4
-rw-r--r--net/sched/act_sample.c4
-rw-r--r--net/sched/act_skbedit.c11
-rw-r--r--net/sched/act_tunnel_key.c9
-rw-r--r--net/sched/act_vlan.c16
-rw-r--r--net/sched/cls_api.c21
13 files changed, 197 insertions, 15 deletions
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 3258da3d5bed..5c21401b0555 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -19,8 +19,10 @@
#include <net/sock.h>
#include <net/sch_generic.h>
#include <net/pkt_cls.h>
+#include <net/tc_act/tc_pedit.h>
#include <net/act_api.h>
#include <net/netlink.h>
+#include <net/flow_offload.h>
#ifdef CONFIG_INET
DEFINE_STATIC_KEY_FALSE(tcf_frag_xmit_count);
@@ -129,8 +131,92 @@ static void free_tcf(struct tc_action *p)
kfree(p);
}
+static unsigned int tcf_offload_act_num_actions_single(struct tc_action *act)
+{
+ if (is_tcf_pedit(act))
+ return tcf_pedit_nkeys(act);
+ else
+ return 1;
+}
+
+static int offload_action_init(struct flow_offload_action *fl_action,
+ struct tc_action *act,
+ enum offload_act_command cmd,
+ struct netlink_ext_ack *extack)
+{
+ fl_action->extack = extack;
+ fl_action->command = cmd;
+ fl_action->index = act->tcfa_index;
+
+ if (act->ops->offload_act_setup)
+ return act->ops->offload_act_setup(act, fl_action, NULL, false);
+
+ return -EOPNOTSUPP;
+}
+
+static int tcf_action_offload_cmd(struct flow_offload_action *fl_act,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ err = flow_indr_dev_setup_offload(NULL, NULL, TC_SETUP_ACT,
+ fl_act, NULL, NULL);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+/* offload the tc action after it is inserted */
+static int tcf_action_offload_add(struct tc_action *action,
+ struct netlink_ext_ack *extack)
+{
+ struct tc_action *actions[TCA_ACT_MAX_PRIO] = {
+ [0] = action,
+ };
+ struct flow_offload_action *fl_action;
+ int num, err = 0;
+
+ num = tcf_offload_act_num_actions_single(action);
+ fl_action = offload_action_alloc(num);
+ if (!fl_action)
+ return -ENOMEM;
+
+ err = offload_action_init(fl_action, action, FLOW_ACT_REPLACE, extack);
+ if (err)
+ goto fl_err;
+
+ err = tc_setup_action(&fl_action->action, actions);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Failed to setup tc actions for offload\n");
+ goto fl_err;
+ }
+
+ err = tcf_action_offload_cmd(fl_action, extack);
+ tc_cleanup_offload_action(&fl_action->action);
+
+fl_err:
+ kfree(fl_action);
+
+ return err;
+}
+
+static int tcf_action_offload_del(struct tc_action *action)
+{
+ struct flow_offload_action fl_act = {};
+ int err = 0;
+
+ err = offload_action_init(&fl_act, action, FLOW_ACT_DESTROY, NULL);
+ if (err)
+ return err;
+
+ return tcf_action_offload_cmd(&fl_act, NULL);
+}
+
static void tcf_action_cleanup(struct tc_action *p)
{
+ tcf_action_offload_del(p);
if (p->ops->cleanup)
p->ops->cleanup(p);
@@ -1061,6 +1147,11 @@ err_out:
return ERR_PTR(err);
}
+static bool tc_act_bind(u32 flags)
+{
+ return !!(flags & TCA_ACT_FLAGS_BIND);
+}
+
/* Returns numbers of initialized actions or negative error. */
int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
@@ -1103,6 +1194,8 @@ int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
sz += tcf_action_fill_size(act);
/* Start from index 0 */
actions[i - 1] = act;
+ if (!tc_act_bind(flags))
+ tcf_action_offload_add(act, extack);
}
/* We have to commit them all together, because if any error happened in
diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c
index 4428852a03d7..e0f515b774ca 100644
--- a/net/sched/act_csum.c
+++ b/net/sched/act_csum.c
@@ -705,7 +705,9 @@ static int tcf_csum_offload_act_setup(struct tc_action *act, void *entry_data,
entry->csum_flags = tcf_csum_update_flags(act);
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ fl_action->id = FLOW_ACTION_CSUM;
}
return 0;
diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
index dc64f31e5191..1c537913a189 100644
--- a/net/sched/act_ct.c
+++ b/net/sched/act_ct.c
@@ -1505,7 +1505,9 @@ static int tcf_ct_offload_act_setup(struct tc_action *act, void *entry_data,
entry->ct.flow_table = tcf_ct_ft(act);
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ fl_action->id = FLOW_ACTION_CT;
}
return 0;
diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index f77be22069f4..bde6a6c01e64 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -272,7 +272,18 @@ static int tcf_gact_offload_act_setup(struct tc_action *act, void *entry_data,
}
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ if (is_tcf_gact_ok(act))
+ fl_action->id = FLOW_ACTION_ACCEPT;
+ else if (is_tcf_gact_shot(act))
+ fl_action->id = FLOW_ACTION_DROP;
+ else if (is_tcf_gact_trap(act))
+ fl_action->id = FLOW_ACTION_TRAP;
+ else if (is_tcf_gact_goto_chain(act))
+ fl_action->id = FLOW_ACTION_GOTO;
+ else
+ return -EOPNOTSUPP;
}
return 0;
diff --git a/net/sched/act_gate.c b/net/sched/act_gate.c
index 1d8297497692..d56e73843a4b 100644
--- a/net/sched/act_gate.c
+++ b/net/sched/act_gate.c
@@ -637,7 +637,9 @@ static int tcf_gate_offload_act_setup(struct tc_action *act, void *entry_data,
return err;
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ fl_action->id = FLOW_ACTION_GATE;
}
return 0;
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 8eecf55be0a2..39acd1d18609 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -482,7 +482,18 @@ static int tcf_mirred_offload_act_setup(struct tc_action *act, void *entry_data,
}
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ if (is_tcf_mirred_egress_redirect(act))
+ fl_action->id = FLOW_ACTION_REDIRECT;
+ else if (is_tcf_mirred_egress_mirror(act))
+ fl_action->id = FLOW_ACTION_MIRRED;
+ else if (is_tcf_mirred_ingress_redirect(act))
+ fl_action->id = FLOW_ACTION_REDIRECT_INGRESS;
+ else if (is_tcf_mirred_ingress_mirror(act))
+ fl_action->id = FLOW_ACTION_MIRRED_INGRESS;
+ else
+ return -EOPNOTSUPP;
}
return 0;
diff --git a/net/sched/act_mpls.c b/net/sched/act_mpls.c
index a4615e1331e0..b9ff3459fdab 100644
--- a/net/sched/act_mpls.c
+++ b/net/sched/act_mpls.c
@@ -415,7 +415,21 @@ static int tcf_mpls_offload_act_setup(struct tc_action *act, void *entry_data,
}
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ switch (tcf_mpls_action(act)) {
+ case TCA_MPLS_ACT_PUSH:
+ fl_action->id = FLOW_ACTION_MPLS_PUSH;
+ break;
+ case TCA_MPLS_ACT_POP:
+ fl_action->id = FLOW_ACTION_MPLS_POP;
+ break;
+ case TCA_MPLS_ACT_MODIFY:
+ fl_action->id = FLOW_ACTION_MPLS_MANGLE;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
}
return 0;
diff --git a/net/sched/act_police.c b/net/sched/act_police.c
index abb6d16a20b2..0923aa2b8f8a 100644
--- a/net/sched/act_police.c
+++ b/net/sched/act_police.c
@@ -421,7 +421,9 @@ static int tcf_police_offload_act_setup(struct tc_action *act, void *entry_data,
entry->police.mtu = tcf_police_tcfp_mtu(act);
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ fl_action->id = FLOW_ACTION_POLICE;
}
return 0;
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index 07e56903211e..9a22cdda6bbd 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -303,7 +303,9 @@ static int tcf_sample_offload_act_setup(struct tc_action *act, void *entry_data,
tcf_offload_sample_get_group(entry, act);
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ fl_action->id = FLOW_ACTION_SAMPLE;
}
return 0;
diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c
index c380f9e6cc95..ceba11b198bb 100644
--- a/net/sched/act_skbedit.c
+++ b/net/sched/act_skbedit.c
@@ -347,7 +347,16 @@ static int tcf_skbedit_offload_act_setup(struct tc_action *act, void *entry_data
}
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ if (is_tcf_skbedit_mark(act))
+ fl_action->id = FLOW_ACTION_MARK;
+ else if (is_tcf_skbedit_ptype(act))
+ fl_action->id = FLOW_ACTION_PTYPE;
+ else if (is_tcf_skbedit_priority(act))
+ fl_action->id = FLOW_ACTION_PRIORITY;
+ else
+ return -EOPNOTSUPP;
}
return 0;
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c
index e96a65a5323e..23aba03d26a8 100644
--- a/net/sched/act_tunnel_key.c
+++ b/net/sched/act_tunnel_key.c
@@ -827,7 +827,14 @@ static int tcf_tunnel_key_offload_act_setup(struct tc_action *act,
}
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ if (is_tcf_tunnel_set(act))
+ fl_action->id = FLOW_ACTION_TUNNEL_ENCAP;
+ else if (is_tcf_tunnel_release(act))
+ fl_action->id = FLOW_ACTION_TUNNEL_DECAP;
+ else
+ return -EOPNOTSUPP;
}
return 0;
diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c
index 0300792084f0..756e2dcde1cd 100644
--- a/net/sched/act_vlan.c
+++ b/net/sched/act_vlan.c
@@ -395,7 +395,21 @@ static int tcf_vlan_offload_act_setup(struct tc_action *act, void *entry_data,
}
*index_inc = 1;
} else {
- return -EOPNOTSUPP;
+ struct flow_offload_action *fl_action = entry_data;
+
+ switch (tcf_vlan_action(act)) {
+ case TCA_VLAN_ACT_PUSH:
+ fl_action->id = FLOW_ACTION_VLAN_PUSH;
+ break;
+ case TCA_VLAN_ACT_POP:
+ fl_action->id = FLOW_ACTION_VLAN_POP;
+ break;
+ case TCA_VLAN_ACT_MODIFY:
+ fl_action->id = FLOW_ACTION_VLAN_MANGLE;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
}
return 0;
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 53f263c9a725..353e1eed48be 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -3488,8 +3488,8 @@ static int tc_setup_offload_act(struct tc_action *act,
#endif
}
-int tc_setup_offload_action(struct flow_action *flow_action,
- const struct tcf_exts *exts)
+int tc_setup_action(struct flow_action *flow_action,
+ struct tc_action *actions[])
{
int i, j, index, err = 0;
struct tc_action *act;
@@ -3498,11 +3498,11 @@ int tc_setup_offload_action(struct flow_action *flow_action,
BUILD_BUG_ON(TCA_ACT_HW_STATS_IMMEDIATE != FLOW_ACTION_HW_STATS_IMMEDIATE);
BUILD_BUG_ON(TCA_ACT_HW_STATS_DELAYED != FLOW_ACTION_HW_STATS_DELAYED);
- if (!exts)
+ if (!actions)
return 0;
j = 0;
- tcf_exts_for_each_action(i, act, exts) {
+ tcf_act_for_each_action(i, act, actions) {
struct flow_action_entry *entry;
entry = &flow_action->entries[j];
@@ -3531,6 +3531,19 @@ err_out_locked:
spin_unlock_bh(&act->tcfa_lock);
goto err_out;
}
+
+int tc_setup_offload_action(struct flow_action *flow_action,
+ const struct tcf_exts *exts)
+{
+#ifdef CONFIG_NET_CLS_ACT
+ if (!exts)
+ return 0;
+
+ return tc_setup_action(flow_action, exts->actions);
+#else
+ return 0;
+#endif
+}
EXPORT_SYMBOL(tc_setup_offload_action);
unsigned int tcf_exts_num_actions(struct tcf_exts *exts)