net/pfe: add device start/stop
[dpdk.git] / drivers / net / sfc / sfc_tx.c
index aa0538f..7d0e18a 100644 (file)
  */
 #define SFC_TX_QFLUSH_POLL_ATTEMPTS    (2000)
 
-uint64_t
-sfc_tx_get_dev_offload_caps(struct sfc_adapter *sa)
+static uint64_t
+sfc_tx_get_offload_mask(struct sfc_adapter *sa)
 {
        const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
-       uint64_t caps = 0;
+       uint64_t no_caps = 0;
 
-       if ((sa->priv.dp_tx->features & SFC_DP_TX_FEAT_VLAN_INSERT) &&
-           encp->enc_hw_tx_insert_vlan_enabled)
-               caps |= DEV_TX_OFFLOAD_VLAN_INSERT;
+       if (!encp->enc_hw_tx_insert_vlan_enabled)
+               no_caps |= DEV_TX_OFFLOAD_VLAN_INSERT;
 
-       if (sa->priv.dp_tx->features & SFC_DP_TX_FEAT_MULTI_SEG)
-               caps |= DEV_TX_OFFLOAD_MULTI_SEGS;
+       if (!encp->enc_tunnel_encapsulations_supported)
+               no_caps |= DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM;
 
-       if ((~sa->priv.dp_tx->features & SFC_DP_TX_FEAT_MULTI_POOL) &&
-           (~sa->priv.dp_tx->features & SFC_DP_TX_FEAT_REFCNT))
-               caps |= DEV_TX_OFFLOAD_MBUF_FAST_FREE;
+       if (!sa->tso)
+               no_caps |= DEV_TX_OFFLOAD_TCP_TSO;
 
-       return caps;
+       if (!sa->tso_encap)
+               no_caps |= (DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
+                           DEV_TX_OFFLOAD_GENEVE_TNL_TSO);
+
+       return ~no_caps;
 }
 
 uint64_t
-sfc_tx_get_queue_offload_caps(struct sfc_adapter *sa)
+sfc_tx_get_dev_offload_caps(struct sfc_adapter *sa)
 {
-       const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
-       uint64_t caps = 0;
-
-       caps |= DEV_TX_OFFLOAD_IPV4_CKSUM;
-       caps |= DEV_TX_OFFLOAD_UDP_CKSUM;
-       caps |= DEV_TX_OFFLOAD_TCP_CKSUM;
-
-       if (encp->enc_tunnel_encapsulations_supported)
-               caps |= DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM;
-
-       if (sa->tso)
-               caps |= DEV_TX_OFFLOAD_TCP_TSO;
+       return sa->priv.dp_tx->dev_offload_capa & sfc_tx_get_offload_mask(sa);
+}
 
-       return caps;
+uint64_t
+sfc_tx_get_queue_offload_caps(struct sfc_adapter *sa)
+{
+       return sa->priv.dp_tx->queue_offload_capa & sfc_tx_get_offload_mask(sa);
 }
 
 static int
@@ -173,7 +168,8 @@ sfc_tx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
                SFC_TX_DEFAULT_FREE_THRESH;
        txq_info->offloads = offloads;
 
-       rc = sfc_dma_alloc(sa, "txq", sw_index, EFX_TXQ_SIZE(txq_info->entries),
+       rc = sfc_dma_alloc(sa, "txq", sw_index,
+                          efx_txq_size(sa->nic, txq_info->entries),
                           socket_id, &txq->mem);
        if (rc != 0)
                goto fail_dma_alloc;
@@ -468,7 +464,9 @@ sfc_tx_qstart(struct sfc_adapter *sa, unsigned int sw_index)
                        flags |= EFX_TXQ_CKSUM_INNER_TCPUDP;
        }
 
-       if (txq_info->offloads & DEV_TX_OFFLOAD_TCP_TSO)
+       if (txq_info->offloads & (DEV_TX_OFFLOAD_TCP_TSO |
+                                 DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
+                                 DEV_TX_OFFLOAD_GENEVE_TNL_TSO))
                flags |= EFX_TXQ_FATSOV2;
 
        rc = efx_tx_qcreate(sa->nic, txq->hw_index, 0, &txq->mem,
@@ -587,18 +585,25 @@ int
 sfc_tx_start(struct sfc_adapter *sa)
 {
        struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
+       const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
        unsigned int sw_index;
        int rc = 0;
 
        sfc_log_init(sa, "txq_count = %u", sas->txq_count);
 
        if (sa->tso) {
-               if (!efx_nic_cfg_get(sa->nic)->enc_fw_assisted_tso_v2_enabled) {
+               if (!encp->enc_fw_assisted_tso_v2_enabled) {
                        sfc_warn(sa, "TSO support was unable to be restored");
                        sa->tso = B_FALSE;
+                       sa->tso_encap = B_FALSE;
                }
        }
 
+       if (sa->tso_encap && !encp->enc_fw_assisted_tso_v2_encap_enabled) {
+               sfc_warn(sa, "Encapsulated TSO support was unable to be restored");
+               sa->tso_encap = B_FALSE;
+       }
+
        rc = efx_tx_init(sa->nic);
        if (rc != 0)
                goto fail_efx_tx_init;
@@ -696,6 +701,36 @@ sfc_efx_tx_maybe_insert_tag(struct sfc_efx_txq *txq, struct rte_mbuf *m,
        return 1;
 }
 
+static uint16_t
+sfc_efx_prepare_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
+                    uint16_t nb_pkts)
+{
+       struct sfc_dp_txq *dp_txq = tx_queue;
+       struct sfc_efx_txq *txq = sfc_efx_txq_by_dp_txq(dp_txq);
+       const efx_nic_cfg_t *encp = efx_nic_cfg_get(txq->evq->sa->nic);
+       uint16_t i;
+
+       for (i = 0; i < nb_pkts; i++) {
+               int ret;
+
+               /*
+                * EFX Tx datapath may require extra VLAN descriptor if VLAN
+                * insertion offload is requested regardless the offload
+                * requested/supported.
+                */
+               ret = sfc_dp_tx_prepare_pkt(tx_pkts[i],
+                               encp->enc_tx_tso_tcp_header_offset_limit,
+                               txq->max_fill_level, EFX_TX_FATSOV2_OPT_NDESCS,
+                               1);
+               if (unlikely(ret != 0)) {
+                       rte_errno = ret;
+                       break;
+               }
+       }
+
+       return i;
+}
+
 static uint16_t
 sfc_efx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 {
@@ -756,13 +791,10 @@ sfc_efx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
                         */
                        if (sfc_efx_tso_do(txq, added, &m_seg, &in_off, &pend,
                                           &pkt_descs, &pkt_len) != 0) {
-                               /* We may have reached this place for
-                                * one of the following reasons:
-                                *
-                                * 1) Packet header length is greater
-                                *    than SFC_TSOH_STD_LEN
-                                * 2) TCP header starts at more then
-                                *    208 bytes into the frame
+                               /* We may have reached this place if packet
+                                * header linearization is needed but the
+                                * header length is greater than
+                                * SFC_TSOH_STD_LEN
                                 *
                                 * We will deceive RTE saying that we have sent
                                 * the packet, but we will actually drop it.
@@ -1108,11 +1140,14 @@ struct sfc_dp_tx sfc_efx_tx = {
                .type           = SFC_DP_TX,
                .hw_fw_caps     = 0,
        },
-       .features               = SFC_DP_TX_FEAT_VLAN_INSERT |
-                                 SFC_DP_TX_FEAT_TSO |
-                                 SFC_DP_TX_FEAT_MULTI_POOL |
-                                 SFC_DP_TX_FEAT_REFCNT |
-                                 SFC_DP_TX_FEAT_MULTI_SEG,
+       .features               = 0,
+       .dev_offload_capa       = DEV_TX_OFFLOAD_VLAN_INSERT |
+                                 DEV_TX_OFFLOAD_MULTI_SEGS,
+       .queue_offload_capa     = DEV_TX_OFFLOAD_IPV4_CKSUM |
+                                 DEV_TX_OFFLOAD_UDP_CKSUM |
+                                 DEV_TX_OFFLOAD_TCP_CKSUM |
+                                 DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
+                                 DEV_TX_OFFLOAD_TCP_TSO,
        .qsize_up_rings         = sfc_efx_tx_qsize_up_rings,
        .qcreate                = sfc_efx_tx_qcreate,
        .qdestroy               = sfc_efx_tx_qdestroy,
@@ -1120,5 +1155,6 @@ struct sfc_dp_tx sfc_efx_tx = {
        .qstop                  = sfc_efx_tx_qstop,
        .qreap                  = sfc_efx_tx_qreap,
        .qdesc_status           = sfc_efx_tx_qdesc_status,
+       .pkt_prepare            = sfc_efx_prepare_pkts,
        .pkt_burst              = sfc_efx_xmit_pkts,
 };