From: Keegan Freyhof <[email protected]>

Remove support for the VMDq feature from the driver: the multi-pool
Rx-queue configuration path in bnxt_mq_rx_configure(), the VMDQ VLAN
pool wiring in the L2 filter alloc path, and the max_vmdq_pools/
vmdq_queue_num reporting in dev_info (now always reported as 0).

bnxt_mq_rx_configure() validates dev_conf->rxmode.mq_mode explicitly:
RTE_ETH_MQ_RX_NONE and RTE_ETH_MQ_RX_RSS are handled (the latter via
the existing rx_cosq_cnt-based pool count for multi-COS RSS), and any
other mode is rejected with -EINVAL rather than falling through.

The per-non-default-VNIC skip_filter_allocation guard in the same
function, and the RTE_ETH_VMDQ_ACCEPT_HASH_UC/BROADCAST/MULTICAST ->
l2_rx_mask flag mapping in rte_pmd_bnxt_set_vf_rxmode(), are both
unrelated to VMDq pools and kept as-is: the former is used by the
plain multi-COS RSS path, and the latter -- despite the name -- is
the standard DPDK VF-rxmode API used regardless of hardware VMDq
pool support.

Signed-off-by: Keegan Freyhof <[email protected]>
Signed-off-by: Mohammad Shuab Siddique <[email protected]>
---
v2:
* Explicitly reject any dev_conf->rxmode.mq_mode value
  bnxt_mq_rx_configure() doesn't handle, instead of silently falling
  through. Stephen Hemminger noted this validation was lost along
  with VMDq support's own mq_mode switch cases.

 doc/guides/nics/features/bnxt.ini |  1 -
 drivers/net/bnxt/bnxt_ethdev.c    | 27 ++------------
 drivers/net/bnxt/bnxt_hwrm.c      | 17 ---------
 drivers/net/bnxt/bnxt_rxq.c       | 58 +++++++------------------------
 drivers/net/bnxt/rte_pmd_bnxt.c   |  1 -
 5 files changed, 14 insertions(+), 90 deletions(-)

diff --git a/doc/guides/nics/features/bnxt.ini 
b/doc/guides/nics/features/bnxt.ini
index f632de135a..447cb178b5 100644
--- a/doc/guides/nics/features/bnxt.ini
+++ b/doc/guides/nics/features/bnxt.ini
@@ -26,7 +26,6 @@ RSS hash             = Y
 RSS key update       = Y
 RSS reta update      = Y
 Inner RSS            = Y
-VMDq                 = Y
 SR-IOV               = Y
 VLAN filter          = Y
 Flow control         = Y
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 4d4349457c..afb00cda43 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1169,7 +1169,6 @@ static int bnxt_dev_info_get_op(struct rte_eth_dev 
*eth_dev,
 {
        struct rte_pci_device *pdev = RTE_CLASS_TO_BUS_DEVICE(eth_dev, *pdev);
        struct bnxt *bp = eth_dev->data->dev_private;
-       uint16_t max_vnics, i, j, vpool, vrxq;
        unsigned int max_rx_rings;
        int rc;
 
@@ -1191,7 +1190,6 @@ static int bnxt_dev_info_get_op(struct rte_eth_dev 
*eth_dev,
        dev_info->max_tx_queues = max_rx_rings;
        dev_info->reta_size = bnxt_rss_hash_tbl_size(bp);
        dev_info->hash_key_size = HW_HASH_KEY_SIZE;
-       max_vnics = bp->max_vnics;
 
        /* MTU specifics */
        dev_info->min_mtu = RTE_ETHER_MIN_MTU;
@@ -1254,29 +1252,8 @@ static int bnxt_dev_info_get_op(struct rte_eth_dev 
*eth_dev,
         * TODO: default_rxconf, default_txconf, rx_desc_lim, and tx_desc_lim
         *       need further investigation.
         */
-
-       /* VMDq resources */
-       vpool = 64; /* RTE_ETH_64_POOLS */
-       vrxq = 128; /* RTE_ETH_VMDQ_DCB_NUM_QUEUES */
-       for (i = 0; i < 4; vpool >>= 1, i++) {
-               if (max_vnics > vpool) {
-                       for (j = 0; j < 5; vrxq >>= 1, j++) {
-                               if (dev_info->max_rx_queues > vrxq) {
-                                       if (vpool > vrxq)
-                                               vpool = vrxq;
-                                       goto found;
-                               }
-                       }
-                       /* Not enough resources to support VMDq */
-                       break;
-               }
-       }
-       /* Not enough resources to support VMDq */
-       vpool = 0;
-       vrxq = 0;
-found:
-       dev_info->max_vmdq_pools = vpool;
-       dev_info->vmdq_queue_num = vrxq;
+       dev_info->max_vmdq_pools = 0;
+       dev_info->vmdq_queue_num = 0;
 
        dev_info->vmdq_pool_base = 0;
        dev_info->vmdq_queue_base = 0;
diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 1615b36aae..beb1fa1390 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -892,24 +892,7 @@ int bnxt_hwrm_set_l2_filter(struct bnxt *bp,
        int rc = 0;
        struct hwrm_cfa_l2_filter_alloc_input req = {.req_type = 0 };
        struct hwrm_cfa_l2_filter_alloc_output *resp = bp->hwrm_cmd_resp_addr;
-       struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
-       const struct rte_eth_vmdq_rx_conf *conf =
-                   &dev_conf->rx_adv_conf.vmdq_rx_conf;
        uint32_t enables = 0;
-       uint16_t j = dst_id - 1;
-
-       //TODO: Is there a better way to add VLANs to each VNIC in case of VMDQ
-       if ((dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_FLAG) &&
-           conf->pool_map[j].pools & (1UL << j)) {
-               PMD_DRV_LOG_LINE(DEBUG,
-                       "Add vlan %u to vmdq pool %u",
-                       conf->pool_map[j].vlan_id, j);
-
-               filter->l2_ivlan = conf->pool_map[j].vlan_id;
-               filter->enables |=
-                       HWRM_CFA_L2_FILTER_ALLOC_INPUT_ENABLES_L2_IVLAN |
-                       HWRM_CFA_L2_FILTER_ALLOC_INPUT_ENABLES_L2_IVLAN_MASK;
-       }
 
        if (filter->fw_l2_filter_id != UINT64_MAX)
                bnxt_hwrm_clear_l2_filter(bp, filter);
diff --git a/drivers/net/bnxt/bnxt_rxq.c b/drivers/net/bnxt/bnxt_rxq.c
index ea3cdffbc0..b0a1e1a714 100644
--- a/drivers/net/bnxt/bnxt_rxq.c
+++ b/drivers/net/bnxt/bnxt_rxq.c
@@ -76,50 +76,25 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
 {
        struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
        struct rte_eth_rss_conf *rss = &bp->rss_conf;
-       const struct rte_eth_vmdq_rx_conf *conf =
-                   &dev_conf->rx_adv_conf.vmdq_rx_conf;
        unsigned int i, j, nb_q_per_grp = 1, ring_idx = 0;
        int start_grp_id, end_grp_id = 1, rc = 0;
        struct bnxt_vnic_info *vnic;
        struct bnxt_filter_info *filter;
-       enum rte_eth_nb_pools pools = 1, max_pools = 0;
+       enum rte_eth_nb_pools pools = 1;
        struct bnxt_rx_queue *rxq;
 
        bp->nr_vnics = 0;
 
        /* Multi-queue mode */
-       if (dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_DCB_RSS) {
-               /* VMDq ONLY, VMDq+RSS, VMDq+DCB, VMDq+DCB+RSS */
-
-               switch (dev_conf->rxmode.mq_mode) {
-               case RTE_ETH_MQ_RX_VMDQ_RSS:
-               case RTE_ETH_MQ_RX_VMDQ_ONLY:
-               case RTE_ETH_MQ_RX_VMDQ_DCB_RSS:
-                       /* FALLTHROUGH */
-                       /* ETH_8/64_POOLs */
-                       pools = conf->nb_queue_pools;
-                       /* For each pool, allocate MACVLAN CFA rule & VNIC */
-                       max_pools = RTE_MIN(bp->max_vnics,
-                                           RTE_MIN(bp->max_l2_ctx,
-                                           RTE_MIN(bp->max_rsscos_ctx,
-                                                   RTE_ETH_64_POOLS)));
-                       PMD_DRV_LOG_LINE(DEBUG,
-                                   "pools = %u max_pools = %u",
-                                   pools, max_pools);
-                       if (pools > max_pools)
-                               pools = max_pools;
-                       break;
-               case RTE_ETH_MQ_RX_RSS:
-                       pools = bp->rx_cosq_cnt ? bp->rx_cosq_cnt : 1;
-                       break;
-               default:
-                       PMD_DRV_LOG_LINE(ERR, "Unsupported mq_mod %d",
-                               dev_conf->rxmode.mq_mode);
-                       rc = -EINVAL;
-                       goto err_out;
-               }
-       } else if (!dev_conf->rxmode.mq_mode) {
+       switch (dev_conf->rxmode.mq_mode) {
+       case RTE_ETH_MQ_RX_NONE:
+       case RTE_ETH_MQ_RX_RSS:
                pools = bp->rx_cosq_cnt ? bp->rx_cosq_cnt : pools;
+               break;
+       default:
+               PMD_DRV_LOG_LINE(ERR, "Unsupported mq_mode %d",
+                                dev_conf->rxmode.mq_mode);
+               return -EINVAL;
        }
 
        pools = RTE_MIN(pools, bp->rx_cp_nr_rings);
@@ -141,19 +116,13 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
                                    "rxq[%d] = %p vnic[%d] = %p",
                                    ring_idx, rxq, i, vnic);
                }
-               if (i == 0) {
-                       if (dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_DCB) {
-                               bp->eth_dev->data->promiscuous = 1;
-                               vnic->flags |= BNXT_VNIC_INFO_PROMISC;
-                       }
+               if (i == 0)
                        vnic->func_default = true;
-               }
                vnic->start_grp_id = start_grp_id;
                vnic->end_grp_id = end_grp_id;
 
                if (i) {
-                       if (dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_VMDQ_DCB ||
-                           !(dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_RSS))
+                       if (!(dev_conf->rxmode.mq_mode & RTE_ETH_MQ_RX_RSS))
                                vnic->rss_dflt_cr = true;
                        goto skip_filter_allocation;
                }
@@ -165,10 +134,7 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
                }
                filter->mac_index = 0;
                filter->flags |= HWRM_CFA_L2_FILTER_ALLOC_INPUT_FLAGS_OUTERMOST;
-               /*
-                * TODO: Configure & associate CFA rule for
-                * each VNIC for each VMDq with MACVLAN, MACVLAN+TC
-                */
+
                STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
 
 skip_filter_allocation:
diff --git a/drivers/net/bnxt/rte_pmd_bnxt.c b/drivers/net/bnxt/rte_pmd_bnxt.c
index 4974e390e7..a0ce89fca9 100644
--- a/drivers/net/bnxt/rte_pmd_bnxt.c
+++ b/drivers/net/bnxt/rte_pmd_bnxt.c
@@ -435,7 +435,6 @@ int rte_pmd_bnxt_set_vf_rxmode(uint16_t port, uint16_t vf,
                return -ENOTSUP;
        }
 
-       /* Is this really the correct mapping?  VFd seems to think it is. */
        if (rx_mask & RTE_ETH_VMDQ_ACCEPT_HASH_UC)
                flag |= BNXT_VNIC_INFO_PROMISC;
 
-- 
2.47.3

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