Add support to parse flow for L2 tunnel filter.
Signed-off-by: Jiawen Wu <jiawe...@trustnetic.com>
---
drivers/net/txgbe/txgbe_flow.c | 202 +++++++++++++++++++++++++++++++++
1 file changed, 202 insertions(+)
diff --git a/drivers/net/txgbe/txgbe_flow.c b/drivers/net/txgbe/txgbe_flow.c
index 7110e594b..8589e3328 100644
--- a/drivers/net/txgbe/txgbe_flow.c
+++ b/drivers/net/txgbe/txgbe_flow.c
@@ -15,6 +15,8 @@
#include <rte_common.h>
#include <rte_cycles.h>
+#include <rte_bus_pci.h>
+#include <rte_hash_crc.h>
#include <rte_flow.h>
#include <rte_flow_driver.h>
@@ -1040,3 +1042,203 @@ txgbe_parse_syn_filter(struct rte_eth_dev *dev,
return 0;
}
+/**
+ * Parse the rule to see if it is a L2 tunnel rule.
+ * And get the L2 tunnel filter info BTW.
+ * Only support E-tag now.
+ * pattern:
+ * The first not void item can be E_TAG.
+ * The next not void item must be END.
+ * action:
+ * The first not void action should be VF or PF.
+ * The next not void action should be END.
+ * pattern example:
+ * ITEM Spec Mask
+ * E_TAG grp 0x1 0x3
+ e_cid_base 0x309 0xFFF
+ * END
+ * other members in mask and spec should set to 0x00.
+ * item->last should be NULL.
+ */
+static int
+cons_parse_l2_tn_filter(struct rte_eth_dev *dev,
+ const struct rte_flow_attr *attr,
+ const struct rte_flow_item pattern[],
+ const struct rte_flow_action actions[],
+ struct txgbe_l2_tunnel_conf *filter,
+ struct rte_flow_error *error)
+{
+ const struct rte_flow_item *item;
+ const struct rte_flow_item_e_tag *e_tag_spec;
+ const struct rte_flow_item_e_tag *e_tag_mask;
+ const struct rte_flow_action *act;
+ const struct rte_flow_action_vf *act_vf;
+ struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
+
+ if (!pattern) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM_NUM,
+ NULL, "NULL pattern.");
+ return -rte_errno;
+ }
+
+ if (!actions) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION_NUM,
+ NULL, "NULL action.");
+ return -rte_errno;
+ }
+
+ if (!attr) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ATTR,
+ NULL, "NULL attribute.");
+ return -rte_errno;
+ }
+
+ /* The first not void item should be e-tag. */
+ item = next_no_void_pattern(pattern, NULL);
+ if (item->type != RTE_FLOW_ITEM_TYPE_E_TAG) {
+ memset(filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item, "Not supported by L2 tunnel filter");
+ return -rte_errno;
+ }
+
+ if (!item->spec || !item->mask) {
+ memset(filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
+ item, "Not supported by L2 tunnel filter");
+ return -rte_errno;
+ }
+
+ /*Not supported last point for range*/
+ if (item->last) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+ item, "Not supported last point for range");
+ return -rte_errno;
+ }
+
+ e_tag_spec = item->spec;
+ e_tag_mask = item->mask;
+
+ /* Only care about GRP and E cid base. */
+ if (e_tag_mask->epcp_edei_in_ecid_b ||
+ e_tag_mask->in_ecid_e ||
+ e_tag_mask->ecid_e ||
+ e_tag_mask->rsvd_grp_ecid_b != rte_cpu_to_be_16(0x3FFF)) {
+ memset(filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item, "Not supported by L2 tunnel filter");
+ return -rte_errno;
+ }
+
+ filter->l2_tunnel_type = RTE_L2_TUNNEL_TYPE_E_TAG;
+ /**
+ * grp and e_cid_base are bit fields and only use 14 bits.
+ * e-tag id is taken as little endian by HW.
+ */
+ filter->tunnel_id = rte_be_to_cpu_16(e_tag_spec->rsvd_grp_ecid_b);
+
+ /* check if the next not void item is END */
+ item = next_no_void_pattern(pattern, item);
+ if (item->type != RTE_FLOW_ITEM_TYPE_END) {
+ memset(filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item, "Not supported by L2 tunnel filter");
+ return -rte_errno;
+ }
+
+ /* parse attr */
+ /* must be input direction */
+ if (!attr->ingress) {
+ memset(filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
+ attr, "Only support ingress.");
+ return -rte_errno;
+ }
+
+ /* not supported */
+ if (attr->egress) {
+ memset(filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
+ attr, "Not support egress.");
+ return -rte_errno;
+ }
+
+ /* not supported */
+ if (attr->transfer) {
+ memset(filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
+ attr, "No support for transfer.");
+ return -rte_errno;
+ }
+
+ /* not supported */
+ if (attr->priority) {
+ memset(filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
+ attr, "Not support priority.");
+ return -rte_errno;
+ }
+
+ /* check if the first not void action is VF or PF. */
+ act = next_no_void_action(actions, NULL);
+ if (act->type != RTE_FLOW_ACTION_TYPE_VF &&
+ act->type != RTE_FLOW_ACTION_TYPE_PF) {
+ memset(filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ act, "Not supported action.");
+ return -rte_errno;
+ }
+
+ if (act->type == RTE_FLOW_ACTION_TYPE_VF) {
+ act_vf = (const struct rte_flow_action_vf *)act->conf;
+ filter->pool = act_vf->id;
+ } else {
+ filter->pool = pci_dev->max_vfs;
+ }
+
+ /* check if the next not void item is END */
+ act = next_no_void_action(actions, act);
+ if (act->type != RTE_FLOW_ACTION_TYPE_END) {
+ memset(filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ act, "Not supported action.");
+ return -rte_errno;
+ }
+
+ return 0;
+}
+
+static int
+txgbe_parse_l2_tn_filter(struct rte_eth_dev *dev,
+ const struct rte_flow_attr *attr,
+ const struct rte_flow_item pattern[],
+ const struct rte_flow_action actions[],
+ struct txgbe_l2_tunnel_conf *l2_tn_filter,
+ struct rte_flow_error *error)
+{
+ int ret = 0;
+
+ ret = cons_parse_l2_tn_filter(dev, attr, pattern,
+ actions, l2_tn_filter, error);
+
+ memset(l2_tn_filter, 0, sizeof(struct txgbe_l2_tunnel_conf));
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ NULL, "Not supported by L2 tunnel filter");
+ ret = -rte_errno;
+ return ret;
+}
+
--
2.18.4
