net/i40e: add QinQ filter create function

Add i40e_cloud_filter_qinq_create function, and call it
from i40e_dev_consistent_tunnel_filter_set function.
Replace the Outer IP filter with the QinQ filter.

QinQ allows multiple VLAN tags to be inserted into a single Ethernet
frame. A QinQ frame is a frame that has two VLAN 802.1Q headers.
802.1Q tunneling (QinQ) is a technique often used by Metro Ethernet
providers as a layer 2 VPN for customers.

Signed-off-by: Laura Stroe <laura.stroe@intel.com>
Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 3a06f0c..09c485e 100644 (file)
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -423,6 +423,7 @@ static int i40e_tunnel_filter_convert(
        struct i40e_tunnel_filter *tunnel_filter);
 static int i40e_sw_tunnel_filter_insert(struct i40e_pf *pf,
                                struct i40e_tunnel_filter *tunnel_filter);
+static int i40e_cloud_filter_qinq_create(struct i40e_pf *pf);
 
 static void i40e_ethertype_filter_restore(struct i40e_pf *pf);
 static void i40e_tunnel_filter_restore(struct i40e_pf *pf);
@@ -7155,6 +7156,23 @@ i40e_dev_consistent_tunnel_filter_set(struct i40e_pf *pf,
                big_buffer = 1;
                tun_type = I40E_AQC_ADD_CLOUD_TNL_TYPE_MPLSoGRE;
                break;
+       case I40E_TUNNEL_TYPE_QINQ:
+               if (!pf->qinq_replace_flag) {
+                       ret = i40e_cloud_filter_qinq_create(pf);
+                       if (ret < 0)
+                               PMD_DRV_LOG(ERR,
+                                       "Failed to create a qinq tunnel filter.");
+                       pf->qinq_replace_flag = 1;
+               }
+               /*      Add in the General fields the values of
+                *      the Outer and Inner VLAN
+                *      Big Buffer should be set, see changes in
+                *      i40e_aq_add_cloud_filters
+                */
+               pfilter->general_fields[0] = tunnel_filter->inner_vlan;
+               pfilter->general_fields[1] = tunnel_filter->outer_vlan;
+               big_buffer = 1;
+               break;
        default:
                /* Other tunnel types is not supported. */
                PMD_DRV_LOG(ERR, "tunnel type is not supported.");
@@ -7168,6 +7186,9 @@ i40e_dev_consistent_tunnel_filter_set(struct i40e_pf *pf,
        else if (tunnel_filter->tunnel_type == I40E_TUNNEL_TYPE_MPLSoGRE)
                pfilter->element.flags =
                        I40E_AQC_ADD_CLOUD_FILTER_TEID_MPLSoGRE;
+       else if (tunnel_filter->tunnel_type == I40E_TUNNEL_TYPE_QINQ)
+               pfilter->element.flags |=
+                       I40E_AQC_ADD_CLOUD_FILTER_CUSTOM_QINQ;
        else {
                val = i40e_dev_get_filter_type(tunnel_filter->filter_type,
                                                &pfilter->element.flags);
@@ -12282,3 +12303,108 @@ rte_pmd_i40e_get_ddp_list(uint8_t port, uint8_t *buff, uint32_t size)
 
        return status;
 }
+
+/* Create a QinQ cloud filter
+ *
+ * The Fortville NIC has limited resources for tunnel filters,
+ * so we can only reuse existing filters.
+ *
+ * In step 1 we define which Field Vector fields can be used for
+ * filter types.
+ * As we do not have the inner tag defined as a field,
+ * we have to define it first, by reusing one of L1 entries.
+ *
+ * In step 2 we are replacing one of existing filter types with
+ * a new one for QinQ.
+ * As we reusing L1 and replacing L2, some of the default filter
+ * types will disappear,which depends on L1 and L2 entries we reuse.
+ *
+ * Step 1: Create L1 filter of outer vlan (12b) + inner vlan (12b)
+ *
+ * 1.  Create L1 filter of outer vlan (12b) which will be in use
+ *             later when we define the cloud filter.
+ *     a.      Valid_flags.replace_cloud = 0
+ *     b.      Old_filter = 10 (Stag_Inner_Vlan)
+ *     c.      New_filter = 0x10
+ *     d.      TR bit = 0xff (optional, not used here)
+ *     e.      Buffer – 2 entries:
+ *             i.      Byte 0 = 8 (outer vlan FV index).
+ *                     Byte 1 = 0 (rsv)
+ *                     Byte 2-3 = 0x0fff
+ *             ii.     Byte 0 = 37 (inner vlan FV index).
+ *                     Byte 1 =0 (rsv)
+ *                     Byte 2-3 = 0x0fff
+ *
+ * Step 2:
+ * 2.  Create cloud filter using two L1 filters entries: stag and
+ *             new filter(outer vlan+ inner vlan)
+ *     a.      Valid_flags.replace_cloud = 1
+ *     b.      Old_filter = 1 (instead of outer IP)
+ *     c.      New_filter = 0x10
+ *     d.      Buffer – 2 entries:
+ *             i.      Byte 0 = 0x80 | 7 (valid | Stag).
+ *                     Byte 1-3 = 0 (rsv)
+ *             ii.     Byte 8 = 0x80 | 0x10 (valid | new l1 filter step1)
+ *                     Byte 9-11 = 0 (rsv)
+ */
+static int
+i40e_cloud_filter_qinq_create(struct i40e_pf *pf)
+{
+       int ret = -ENOTSUP;
+       struct i40e_aqc_replace_cloud_filters_cmd  filter_replace;
+       struct i40e_aqc_replace_cloud_filters_cmd_buf  filter_replace_buf;
+       struct i40e_hw *hw = I40E_PF_TO_HW(pf);
+
+       /* Init */
+       memset(&filter_replace, 0,
+              sizeof(struct i40e_aqc_replace_cloud_filters_cmd));
+       memset(&filter_replace_buf, 0,
+              sizeof(struct i40e_aqc_replace_cloud_filters_cmd_buf));
+
+       /* create L1 filter */
+       filter_replace.old_filter_type =
+               I40E_AQC_REPLACE_CLOUD_CMD_INPUT_FV_STAG_IVLAN;
+       filter_replace.new_filter_type = I40E_AQC_ADD_CLOUD_FILTER_CUSTOM_QINQ;
+       filter_replace.tr_bit = 0;
+
+       /* Prepare the buffer, 2 entries */
+       filter_replace_buf.data[0] = I40E_AQC_REPLACE_CLOUD_CMD_INPUT_FV_VLAN;
+       filter_replace_buf.data[0] |=
+               I40E_AQC_REPLACE_CLOUD_CMD_INPUT_VALIDATED;
+       /* Field Vector 12b mask */
+       filter_replace_buf.data[2] = 0xff;
+       filter_replace_buf.data[3] = 0x0f;
+       filter_replace_buf.data[4] =
+               I40E_AQC_REPLACE_CLOUD_CMD_INPUT_FV_INNER_VLAN;
+       filter_replace_buf.data[4] |=
+               I40E_AQC_REPLACE_CLOUD_CMD_INPUT_VALIDATED;
+       /* Field Vector 12b mask */
+       filter_replace_buf.data[6] = 0xff;
+       filter_replace_buf.data[7] = 0x0f;
+       ret = i40e_aq_replace_cloud_filters(hw, &filter_replace,
+                       &filter_replace_buf);
+       if (ret != I40E_SUCCESS)
+               return ret;
+
+       /* Apply the second L2 cloud filter */
+       memset(&filter_replace, 0,
+              sizeof(struct i40e_aqc_replace_cloud_filters_cmd));
+       memset(&filter_replace_buf, 0,
+              sizeof(struct i40e_aqc_replace_cloud_filters_cmd_buf));
+
+       /* create L2 filter, input for L2 filter will be L1 filter  */
+       filter_replace.valid_flags = I40E_AQC_REPLACE_CLOUD_FILTER;
+       filter_replace.old_filter_type = I40E_AQC_ADD_CLOUD_FILTER_OIP;
+       filter_replace.new_filter_type = I40E_AQC_ADD_CLOUD_FILTER_CUSTOM_QINQ;
+
+       /* Prepare the buffer, 2 entries */
+       filter_replace_buf.data[0] = I40E_AQC_REPLACE_CLOUD_CMD_INPUT_FV_STAG;
+       filter_replace_buf.data[0] |=
+               I40E_AQC_REPLACE_CLOUD_CMD_INPUT_VALIDATED;
+       filter_replace_buf.data[4] = I40E_AQC_ADD_CLOUD_FILTER_CUSTOM_QINQ;
+       filter_replace_buf.data[4] |=
+               I40E_AQC_REPLACE_CLOUD_CMD_INPUT_VALIDATED;
+       ret = i40e_aq_replace_cloud_filters(hw, &filter_replace,
+                       &filter_replace_buf);
+       return ret;
+}

diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index a8ecea4..f537a3a 100644 (file)
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
  *   All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
@@ -505,6 +505,7 @@ struct i40e_ethertype_rule {
 #define I40E_AQC_REPLACE_CLOUD_CMD_INPUT_FV_TEID_WORD1 45
 #define I40E_AQC_ADD_CLOUD_TNL_TYPE_MPLSoUDP 8
 #define I40E_AQC_ADD_CLOUD_TNL_TYPE_MPLSoGRE 9
+#define I40E_AQC_ADD_CLOUD_FILTER_CUSTOM_QINQ 0x10
 #define I40E_AQC_ADD_CLOUD_FILTER_TEID_MPLSoUDP 0x11
 #define I40E_AQC_ADD_CLOUD_FILTER_TEID_MPLSoGRE 0x12
 #define I40E_AQC_ADD_L1_FILTER_TEID_MPLS 0x11
@@ -553,6 +554,7 @@ enum i40e_tunnel_type {
        I40E_L2_TUNNEL_TYPE_E_TAG,
        I40E_TUNNEL_TYPE_MPLSoUDP,
        I40E_TUNNEL_TYPE_MPLSoGRE,
+       I40E_TUNNEL_TYPE_QINQ,
        I40E_TUNNEL_TYPE_MAX,
 };
 
@@ -674,6 +676,7 @@ struct i40e_pf {
        bool floating_veb_list[I40E_MAX_VF];
        struct i40e_flow_list flow_list;
        bool mpls_replace_flag;  /* 1 - MPLS filter replace is done */
+       bool qinq_replace_flag;  /* QINQ filter replace is done */
 };
 
 enum pending_msg {