This implements TC action to flow_action translation from cls_flower.
Signed-off-by: Pablo Neira Ayuso <pa...@netfilter.org>
---
net/sched/cls_flower.c | 124 ++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 123 insertions(+), 1 deletion(-)
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index e1dd60a2ecb8..a96a80f01c6d 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -28,6 +28,14 @@
#include <net/dst.h>
#include <net/dst_metadata.h>
+#include <net/tc_act/tc_mirred.h>
+#include <net/tc_act/tc_vlan.h>
+#include <net/tc_act/tc_tunnel_key.h>
+#include <net/tc_act/tc_pedit.h>
+#include <net/tc_act/tc_csum.h>
+#include <net/tc_act/tc_gact.h>
+#include <net/tc_act/tc_skbedit.h>
+#include <net/tc_act/tc_mirred.h>
struct fl_flow_key {
int indev_ifindex;
@@ -101,6 +109,7 @@ struct cls_fl_filter {
u32 in_hw_count;
struct rcu_work rwork;
struct net_device *hw_dev;
+ struct flow_action action;
};
static const struct rhashtable_params mask_ht_params = {
@@ -294,6 +303,107 @@ static void fl_hw_destroy_filter(struct tcf_proto *tp,
struct cls_fl_filter *f,
tcf_block_offload_dec(block, &f->flags);
}
+static int fl_hw_setup_action(struct flow_action *flow_action,
+ const struct tcf_exts *exts)
+{
+ const struct tc_action *act;
+ int num_acts = 0, i, j, k;
+
+ if (!exts)
+ return 0;
+
+ tcf_exts_for_each_action(i, act, exts) {
+ if (is_tcf_pedit(act))
+ num_acts += tcf_pedit_nkeys(act);
+ else
+ num_acts++;
+ }
+
+ if (!num_acts)
+ return 0;
+
+ if (flow_action_init(flow_action, num_acts) < 0)
+ return -ENOMEM;
+
+ j = 0;
+ tcf_exts_for_each_action(i, act, exts) {
+ struct flow_action_key *key;
+
+ key = &flow_action->keys[j];
+ if (is_tcf_gact_ok(act)) {
+ key->id = FLOW_ACTION_KEY_ACCEPT;
+ } else if (is_tcf_gact_shot(act)) {
+ key->id = FLOW_ACTION_KEY_DROP;
+ } else if (is_tcf_gact_trap(act)) {
+ key->id = FLOW_ACTION_KEY_TRAP;
+ } else if (is_tcf_gact_goto_chain(act)) {
+ key->id = FLOW_ACTION_KEY_GOTO;
+ key->chain_index = tcf_gact_goto_chain_index(act);
+ } else if (is_tcf_mirred_egress_redirect(act)) {
+ key->id = FLOW_ACTION_KEY_REDIRECT;
+ key->dev = tcf_mirred_dev(act);
+ } else if (is_tcf_mirred_egress_mirror(act)) {
+ key->id = FLOW_ACTION_KEY_MIRRED;
+ key->dev = tcf_mirred_dev(act);
+ } else if (is_tcf_vlan(act)) {
+ switch (tcf_vlan_action(act)) {
+ case TCA_VLAN_ACT_PUSH:
+ key->id = FLOW_ACTION_KEY_VLAN_PUSH;
+ key->vlan.vid = tcf_vlan_push_vid(act);
+ key->vlan.proto = tcf_vlan_push_proto(act);
+ key->vlan.prio = tcf_vlan_push_prio(act);
+ break;
+ case TCA_VLAN_ACT_POP:
+ key->id = FLOW_ACTION_KEY_VLAN_POP;
+ break;
+ case TCA_VLAN_ACT_MODIFY:
+ key->id = FLOW_ACTION_KEY_VLAN_MANGLE;
+ key->vlan.vid = tcf_vlan_push_vid(act);
+ key->vlan.proto = tcf_vlan_push_proto(act);
+ key->vlan.prio = tcf_vlan_push_prio(act);
+ break;
+ }
+ } else if (is_tcf_tunnel_set(act)) {
+ key->id = FLOW_ACTION_KEY_TUNNEL_ENCAP;
+ key->tunnel = tcf_tunnel_info(act);
+ } else if (is_tcf_tunnel_release(act)) {
+ key->id = FLOW_ACTION_KEY_TUNNEL_DECAP;
+ key->tunnel = tcf_tunnel_info(act);
+ } else if (is_tcf_pedit(act)) {
+ for (k = 0; k < tcf_pedit_nkeys(act); k++) {
+ switch (tcf_pedit_cmd(act, k)) {
+ case TCA_PEDIT_KEY_EX_CMD_SET:
+ key->id = FLOW_ACTION_KEY_MANGLE;
+ break;
+ case TCA_PEDIT_KEY_EX_CMD_ADD:
+ key->id = FLOW_ACTION_KEY_ADD;
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ break;
+ }
+
+ key->mangle.htype = tcf_pedit_htype(act, k);
+ key->mangle.mask = tcf_pedit_mask(act, k);
+ key->mangle.val = tcf_pedit_val(act, k);
+ key->mangle.offset = tcf_pedit_offset(act, k);
+ key = &flow_action->keys[++j];
+ }
+ } else if (is_tcf_csum(act)) {
+ key->id = FLOW_ACTION_KEY_CSUM;
+ key->csum_flags = tcf_csum_update_flags(act);
+ } else if (is_tcf_skbedit_mark(act)) {
+ key->id = FLOW_ACTION_KEY_MARK;
+ key->mark = tcf_skbedit_mark(act);
+ }
+
+ if (!is_tcf_pedit(act))
+ j++;
+ }
+
+ return 0;
+}
+
static int fl_hw_replace_filter(struct tcf_proto *tp,
struct cls_fl_filter *f,
struct netlink_ext_ack *extack)
@@ -312,18 +422,27 @@ static int fl_hw_replace_filter(struct tcf_proto *tp,
cls_flower.exts = &f->exts;
cls_flower.classid = f->res.classid;
+ if (fl_hw_setup_action(&f->action, &f->exts) < 0)
+ return -ENOMEM;
+
+ cls_flower.rule.action.keys = f->action.keys;
+ cls_flower.rule.action.num_keys = f->action.num_keys;
+
err = tc_setup_cb_call(block, &f->exts, TC_SETUP_CLSFLOWER,
&cls_flower, skip_sw);
if (err < 0) {
fl_hw_destroy_filter(tp, f, NULL);
+ flow_action_free(&f->action);
return err;
} else if (err > 0) {
f->in_hw_count = err;
tcf_block_offload_inc(block, &f->flags);
}
- if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW))
+ if (skip_sw && !(f->flags & TCA_CLS_FLAGS_IN_HW)) {
+ flow_action_free(&f->action);
return -EINVAL;
+ }
return 0;
}
@@ -350,6 +469,7 @@ static bool __fl_delete(struct tcf_proto *tp, struct
cls_fl_filter *f,
bool async = tcf_exts_get_net(&f->exts);
bool last;
+ flow_action_free(&f->action);
idr_remove(&head->handle_idr, f->handle);
list_del_rcu(&f->list);
last = fl_mask_put(head, f->mask, async);
@@ -1341,6 +1461,8 @@ static int fl_reoffload(struct tcf_proto *tp, bool add,
tc_setup_cb_t *cb,
cls_flower.rule.match.mask = &mask->key;
cls_flower.rule.match.key = &f->mkey;
cls_flower.exts = &f->exts;
+ cls_flower.rule.action.num_keys = f->action.num_keys;
+ cls_flower.rule.action.keys = f->action.keys;
cls_flower.classid = f->res.classid;
err = cb(TC_SETUP_CLSFLOWER, &cls_flower, cb_priv);
--
2.11.0
