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path: root/drivers/net/ethernet/intel/ice/ice_tc_lib.c
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Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_tc_lib.c')
-rw-r--r--drivers/net/ethernet/intel/ice/ice_tc_lib.c351
1 files changed, 251 insertions, 100 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_tc_lib.c b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
index f68c555be4e9..faba0f857cd9 100644
--- a/drivers/net/ethernet/intel/ice/ice_tc_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
@@ -724,7 +724,7 @@ ice_eswitch_add_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
*/
fltr->rid = rule_added.rid;
fltr->rule_id = rule_added.rule_id;
- fltr->dest_id = rule_added.vsi_handle;
+ fltr->dest_vsi_handle = rule_added.vsi_handle;
exit:
kfree(list);
@@ -732,6 +732,116 @@ exit:
}
/**
+ * ice_locate_vsi_using_queue - locate VSI using queue (forward to queue action)
+ * @vsi: Pointer to VSI
+ * @tc_fltr: Pointer to tc_flower_filter
+ *
+ * Locate the VSI using specified queue. When ADQ is not enabled, always
+ * return input VSI, otherwise locate corresponding VSI based on per channel
+ * offset and qcount
+ */
+static struct ice_vsi *
+ice_locate_vsi_using_queue(struct ice_vsi *vsi,
+ struct ice_tc_flower_fltr *tc_fltr)
+{
+ int num_tc, tc, queue;
+
+ /* if ADQ is not active, passed VSI is the candidate VSI */
+ if (!ice_is_adq_active(vsi->back))
+ return vsi;
+
+ /* Locate the VSI (it could still be main PF VSI or CHNL_VSI depending
+ * upon queue number)
+ */
+ num_tc = vsi->mqprio_qopt.qopt.num_tc;
+ queue = tc_fltr->action.fwd.q.queue;
+
+ for (tc = 0; tc < num_tc; tc++) {
+ int qcount = vsi->mqprio_qopt.qopt.count[tc];
+ int offset = vsi->mqprio_qopt.qopt.offset[tc];
+
+ if (queue >= offset && queue < offset + qcount) {
+ /* for non-ADQ TCs, passed VSI is the candidate VSI */
+ if (tc < ICE_CHNL_START_TC)
+ return vsi;
+ else
+ return vsi->tc_map_vsi[tc];
+ }
+ }
+ return NULL;
+}
+
+static struct ice_rx_ring *
+ice_locate_rx_ring_using_queue(struct ice_vsi *vsi,
+ struct ice_tc_flower_fltr *tc_fltr)
+{
+ u16 queue = tc_fltr->action.fwd.q.queue;
+
+ return queue < vsi->num_rxq ? vsi->rx_rings[queue] : NULL;
+}
+
+/**
+ * ice_tc_forward_action - Determine destination VSI and queue for the action
+ * @vsi: Pointer to VSI
+ * @tc_fltr: Pointer to TC flower filter structure
+ *
+ * Validates the tc forward action and determines the destination VSI and queue
+ * for the forward action.
+ */
+static struct ice_vsi *
+ice_tc_forward_action(struct ice_vsi *vsi, struct ice_tc_flower_fltr *tc_fltr)
+{
+ struct ice_rx_ring *ring = NULL;
+ struct ice_vsi *ch_vsi = NULL;
+ struct ice_pf *pf = vsi->back;
+ struct device *dev;
+ u32 tc_class;
+
+ dev = ice_pf_to_dev(pf);
+
+ /* Get the destination VSI and/or destination queue and validate them */
+ switch (tc_fltr->action.fltr_act) {
+ case ICE_FWD_TO_VSI:
+ tc_class = tc_fltr->action.fwd.tc.tc_class;
+ /* Select the destination VSI */
+ if (tc_class < ICE_CHNL_START_TC) {
+ NL_SET_ERR_MSG_MOD(tc_fltr->extack,
+ "Unable to add filter because of unsupported destination");
+ return ERR_PTR(-EOPNOTSUPP);
+ }
+ /* Locate ADQ VSI depending on hw_tc number */
+ ch_vsi = vsi->tc_map_vsi[tc_class];
+ break;
+ case ICE_FWD_TO_Q:
+ /* Locate the Rx queue */
+ ring = ice_locate_rx_ring_using_queue(vsi, tc_fltr);
+ if (!ring) {
+ dev_err(dev,
+ "Unable to locate Rx queue for action fwd_to_queue: %u\n",
+ tc_fltr->action.fwd.q.queue);
+ return ERR_PTR(-EINVAL);
+ }
+ /* Determine destination VSI even though the action is
+ * FWD_TO_QUEUE, because QUEUE is associated with VSI
+ */
+ ch_vsi = tc_fltr->dest_vsi;
+ break;
+ default:
+ dev_err(dev,
+ "Unable to add filter because of unsupported action %u (supported actions: fwd to tc, fwd to queue)\n",
+ tc_fltr->action.fltr_act);
+ return ERR_PTR(-EINVAL);
+ }
+ /* Must have valid ch_vsi (it could be main VSI or ADQ VSI) */
+ if (!ch_vsi) {
+ dev_err(dev,
+ "Unable to add filter because specified destination VSI doesn't exist\n");
+ return ERR_PTR(-EINVAL);
+ }
+ return ch_vsi;
+}
+
+/**
* ice_add_tc_flower_adv_fltr - add appropriate filter rules
* @vsi: Pointer to VSI
* @tc_fltr: Pointer to TC flower filter structure
@@ -772,11 +882,10 @@ ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
return -EOPNOTSUPP;
}
- /* get the channel (aka ADQ VSI) */
- if (tc_fltr->dest_vsi)
- ch_vsi = tc_fltr->dest_vsi;
- else
- ch_vsi = vsi->tc_map_vsi[tc_fltr->action.tc_class];
+ /* validate forwarding action VSI and queue */
+ ch_vsi = ice_tc_forward_action(vsi, tc_fltr);
+ if (IS_ERR(ch_vsi))
+ return PTR_ERR(ch_vsi);
lkups_cnt = ice_tc_count_lkups(flags, headers, tc_fltr);
list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC);
@@ -790,30 +899,40 @@ ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
}
rule_info.sw_act.fltr_act = tc_fltr->action.fltr_act;
- if (tc_fltr->action.tc_class >= ICE_CHNL_START_TC) {
- if (!ch_vsi) {
- NL_SET_ERR_MSG_MOD(tc_fltr->extack, "Unable to add filter because specified destination doesn't exist");
- ret = -EINVAL;
- goto exit;
- }
+ /* specify the cookie as filter_rule_id */
+ rule_info.fltr_rule_id = tc_fltr->cookie;
- rule_info.sw_act.fltr_act = ICE_FWD_TO_VSI;
+ switch (tc_fltr->action.fltr_act) {
+ case ICE_FWD_TO_VSI:
rule_info.sw_act.vsi_handle = ch_vsi->idx;
- rule_info.priority = 7;
+ rule_info.priority = ICE_SWITCH_FLTR_PRIO_VSI;
rule_info.sw_act.src = hw->pf_id;
rule_info.rx = true;
dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n",
- tc_fltr->action.tc_class,
+ tc_fltr->action.fwd.tc.tc_class,
rule_info.sw_act.vsi_handle, lkups_cnt);
- } else {
+ break;
+ case ICE_FWD_TO_Q:
+ /* HW queue number in global space */
+ rule_info.sw_act.fwd_id.q_id = tc_fltr->action.fwd.q.hw_queue;
+ rule_info.sw_act.vsi_handle = ch_vsi->idx;
+ rule_info.priority = ICE_SWITCH_FLTR_PRIO_QUEUE;
+ rule_info.sw_act.src = hw->pf_id;
+ rule_info.rx = true;
+ dev_dbg(dev, "add switch rule action to forward to queue:%u (HW queue %u), lkups_cnt:%u\n",
+ tc_fltr->action.fwd.q.queue,
+ tc_fltr->action.fwd.q.hw_queue, lkups_cnt);
+ break;
+ default:
rule_info.sw_act.flag |= ICE_FLTR_TX;
+ /* In case of Tx (LOOKUP_TX), src needs to be src VSI */
rule_info.sw_act.src = vsi->idx;
+ /* 'Rx' is false, direction of rule(LOOKUPTRX) */
rule_info.rx = false;
+ rule_info.priority = ICE_SWITCH_FLTR_PRIO_VSI;
+ break;
}
- /* specify the cookie as filter_rule_id */
- rule_info.fltr_rule_id = tc_fltr->cookie;
-
ret = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, &rule_added);
if (ret == -EEXIST) {
NL_SET_ERR_MSG_MOD(tc_fltr->extack,
@@ -831,19 +950,14 @@ ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
*/
tc_fltr->rid = rule_added.rid;
tc_fltr->rule_id = rule_added.rule_id;
- if (tc_fltr->action.tc_class > 0 && ch_vsi) {
- /* For PF ADQ, VSI type is set as ICE_VSI_CHNL, and
- * for PF ADQ filter, it is not yet set in tc_fltr,
- * hence store the dest_vsi ptr in tc_fltr
- */
- if (ch_vsi->type == ICE_VSI_CHNL)
- tc_fltr->dest_vsi = ch_vsi;
+ tc_fltr->dest_vsi_handle = rule_added.vsi_handle;
+ if (tc_fltr->action.fltr_act == ICE_FWD_TO_VSI ||
+ tc_fltr->action.fltr_act == ICE_FWD_TO_Q) {
+ tc_fltr->dest_vsi = ch_vsi;
/* keep track of advanced switch filter for
- * destination VSI (channel VSI)
+ * destination VSI
*/
ch_vsi->num_chnl_fltr++;
- /* in this case, dest_id is VSI handle (sw handle) */
- tc_fltr->dest_id = rule_added.vsi_handle;
/* keeps track of channel filters for PF VSI */
if (vsi->type == ICE_VSI_PF &&
@@ -851,10 +965,22 @@ ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
ICE_TC_FLWR_FIELD_ENC_DST_MAC)))
pf->num_dmac_chnl_fltrs++;
}
- dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x) for TC %u, rid %u, rule_id %u, vsi_idx %u\n",
- lkups_cnt, flags,
- tc_fltr->action.tc_class, rule_added.rid,
- rule_added.rule_id, rule_added.vsi_handle);
+ switch (tc_fltr->action.fltr_act) {
+ case ICE_FWD_TO_VSI:
+ dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x), action is forward to TC %u, rid %u, rule_id %u, vsi_idx %u\n",
+ lkups_cnt, flags,
+ tc_fltr->action.fwd.tc.tc_class, rule_added.rid,
+ rule_added.rule_id, rule_added.vsi_handle);
+ break;
+ case ICE_FWD_TO_Q:
+ dev_dbg(dev, "added switch rule (lkups_cnt %u, flags 0x%x), action is forward to queue: %u (HW queue %u) , rid %u, rule_id %u\n",
+ lkups_cnt, flags, tc_fltr->action.fwd.q.queue,
+ tc_fltr->action.fwd.q.hw_queue, rule_added.rid,
+ rule_added.rule_id);
+ break;
+ default:
+ break;
+ }
exit:
kfree(list);
return ret;
@@ -1455,43 +1581,15 @@ ice_add_switch_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
}
/**
- * ice_handle_tclass_action - Support directing to a traffic class
+ * ice_prep_adq_filter - Prepare ADQ filter with the required additional headers
* @vsi: Pointer to VSI
- * @cls_flower: Pointer to TC flower offload structure
* @fltr: Pointer to TC flower filter structure
*
- * Support directing traffic to a traffic class
+ * Prepare ADQ filter with the required additional header fields
*/
static int
-ice_handle_tclass_action(struct ice_vsi *vsi,
- struct flow_cls_offload *cls_flower,
- struct ice_tc_flower_fltr *fltr)
+ice_prep_adq_filter(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
{
- int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
- struct ice_vsi *main_vsi;
-
- if (tc < 0) {
- NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because specified destination is invalid");
- return -EINVAL;
- }
- if (!tc) {
- NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of invalid destination");
- return -EINVAL;
- }
-
- if (!(vsi->all_enatc & BIT(tc))) {
- NL_SET_ERR_MSG_MOD(fltr->extack, "Unable to add filter because of non-existence destination");
- return -EINVAL;
- }
-
- /* Redirect to a TC class or Queue Group */
- main_vsi = ice_get_main_vsi(vsi->back);
- if (!main_vsi || !main_vsi->netdev) {
- NL_SET_ERR_MSG_MOD(fltr->extack,
- "Unable to add filter because of invalid netdevice");
- return -EINVAL;
- }
-
if ((fltr->flags & ICE_TC_FLWR_FIELD_TENANT_ID) &&
(fltr->flags & (ICE_TC_FLWR_FIELD_DST_MAC |
ICE_TC_FLWR_FIELD_SRC_MAC))) {
@@ -1503,9 +1601,8 @@ ice_handle_tclass_action(struct ice_vsi *vsi,
/* For ADQ, filter must include dest MAC address, otherwise unwanted
* packets with unrelated MAC address get delivered to ADQ VSIs as long
* as remaining filter criteria is satisfied such as dest IP address
- * and dest/src L4 port. Following code is trying to handle:
- * 1. For non-tunnel, if user specify MAC addresses, use them (means
- * this code won't do anything
+ * and dest/src L4 port. Below code handles the following cases:
+ * 1. For non-tunnel, if user specify MAC addresses, use them.
* 2. For non-tunnel, if user didn't specify MAC address, add implicit
* dest MAC to be lower netdev's active unicast MAC address
* 3. For tunnel, as of now TC-filter through flower classifier doesn't
@@ -1528,35 +1625,97 @@ ice_handle_tclass_action(struct ice_vsi *vsi,
eth_broadcast_addr(fltr->outer_headers.l2_mask.dst_mac);
}
- /* validate specified dest MAC address, make sure either it belongs to
- * lower netdev or any of MACVLAN. MACVLANs MAC address are added as
- * unicast MAC filter destined to main VSI.
- */
- if (!ice_mac_fltr_exist(&main_vsi->back->hw,
- fltr->outer_headers.l2_key.dst_mac,
- main_vsi->idx)) {
- NL_SET_ERR_MSG_MOD(fltr->extack,
- "Unable to add filter because legacy MAC filter for specified destination doesn't exist");
- return -EINVAL;
- }
-
/* Make sure VLAN is already added to main VSI, before allowing ADQ to
* add a VLAN based filter such as MAC + VLAN + L4 port.
*/
if (fltr->flags & ICE_TC_FLWR_FIELD_VLAN) {
u16 vlan_id = be16_to_cpu(fltr->outer_headers.vlan_hdr.vlan_id);
- if (!ice_vlan_fltr_exist(&main_vsi->back->hw, vlan_id,
- main_vsi->idx)) {
+ if (!ice_vlan_fltr_exist(&vsi->back->hw, vlan_id, vsi->idx)) {
NL_SET_ERR_MSG_MOD(fltr->extack,
"Unable to add filter because legacy VLAN filter for specified destination doesn't exist");
return -EINVAL;
}
}
+ return 0;
+}
+
+/**
+ * ice_handle_tclass_action - Support directing to a traffic class
+ * @vsi: Pointer to VSI
+ * @cls_flower: Pointer to TC flower offload structure
+ * @fltr: Pointer to TC flower filter structure
+ *
+ * Support directing traffic to a traffic class/queue-set
+ */
+static int
+ice_handle_tclass_action(struct ice_vsi *vsi,
+ struct flow_cls_offload *cls_flower,
+ struct ice_tc_flower_fltr *fltr)
+{
+ int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
+
+ /* user specified hw_tc (must be non-zero for ADQ TC), action is forward
+ * to hw_tc (i.e. ADQ channel number)
+ */
+ if (tc < ICE_CHNL_START_TC) {
+ NL_SET_ERR_MSG_MOD(fltr->extack,
+ "Unable to add filter because of unsupported destination");
+ return -EOPNOTSUPP;
+ }
+ if (!(vsi->all_enatc & BIT(tc))) {
+ NL_SET_ERR_MSG_MOD(fltr->extack,
+ "Unable to add filter because of non-existence destination");
+ return -EINVAL;
+ }
fltr->action.fltr_act = ICE_FWD_TO_VSI;
- fltr->action.tc_class = tc;
+ fltr->action.fwd.tc.tc_class = tc;
- return 0;
+ return ice_prep_adq_filter(vsi, fltr);
+}
+
+static int
+ice_tc_forward_to_queue(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr,
+ struct flow_action_entry *act)
+{
+ struct ice_vsi *ch_vsi = NULL;
+ u16 queue = act->rx_queue;
+
+ if (queue > vsi->num_rxq) {
+ NL_SET_ERR_MSG_MOD(fltr->extack,
+ "Unable to add filter because specified queue is invalid");
+ return -EINVAL;
+ }
+ fltr->action.fltr_act = ICE_FWD_TO_Q;
+ fltr->action.fwd.q.queue = queue;
+ /* determine corresponding HW queue */
+ fltr->action.fwd.q.hw_queue = vsi->rxq_map[queue];
+
+ /* If ADQ is configured, and the queue belongs to ADQ VSI, then prepare
+ * ADQ switch filter
+ */
+ ch_vsi = ice_locate_vsi_using_queue(vsi, fltr);
+ if (!ch_vsi)
+ return -EINVAL;
+ fltr->dest_vsi = ch_vsi;
+ if (!ice_is_chnl_fltr(fltr))
+ return 0;
+
+ return ice_prep_adq_filter(vsi, fltr);
+}
+
+static int
+ice_tc_parse_action(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr,
+ struct flow_action_entry *act)
+{
+ switch (act->id) {
+ case FLOW_ACTION_RX_QUEUE_MAPPING:
+ /* forward to queue */
+ return ice_tc_forward_to_queue(vsi, fltr, act);
+ default:
+ NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported TC action");
+ return -EOPNOTSUPP;
+ }
}
/**
@@ -1575,7 +1734,7 @@ ice_parse_tc_flower_actions(struct ice_vsi *vsi,
struct flow_rule *rule = flow_cls_offload_flow_rule(cls_flower);
struct flow_action *flow_action = &rule->action;
struct flow_action_entry *act;
- int i;
+ int i, err;
if (cls_flower->classid)
return ice_handle_tclass_action(vsi, cls_flower, fltr);
@@ -1584,21 +1743,13 @@ ice_parse_tc_flower_actions(struct ice_vsi *vsi,
return -EINVAL;
flow_action_for_each(i, act, flow_action) {
- if (ice_is_eswitch_mode_switchdev(vsi->back)) {
- int err = ice_eswitch_tc_parse_action(fltr, act);
-
- if (err)
- return err;
- continue;
- }
- /* Allow only one rule per filter */
-
- /* Drop action */
- if (act->id == FLOW_ACTION_DROP) {
- NL_SET_ERR_MSG_MOD(fltr->extack, "Unsupported action DROP");
- return -EINVAL;
- }
- fltr->action.fltr_act = ICE_FWD_TO_VSI;
+ if (ice_is_eswitch_mode_switchdev(vsi->back))
+ err = ice_eswitch_tc_parse_action(fltr, act);
+ else
+ err = ice_tc_parse_action(vsi, fltr, act);
+ if (err)
+ return err;
+ continue;
}
return 0;
}
@@ -1618,7 +1769,7 @@ static int ice_del_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
rule_rem.rid = fltr->rid;
rule_rem.rule_id = fltr->rule_id;
- rule_rem.vsi_handle = fltr->dest_id;
+ rule_rem.vsi_handle = fltr->dest_vsi_handle;
err = ice_rem_adv_rule_by_id(&pf->hw, &rule_rem);
if (err) {
if (err == -ENOENT) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-20 15:20:07 +0000