Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[cascardo/linux.git] / drivers / net / ethernet / cavium / thunder / nicvf_main.c

diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
index 06c014e..7d00162 100644 (file)
--- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -522,6 +522,7 @@ static void nicvf_snd_pkt_handler(struct net_device *netdev,
        struct nicvf *nic = netdev_priv(netdev);
        struct snd_queue *sq;
        struct sq_hdr_subdesc *hdr;
+       struct sq_hdr_subdesc *tso_sqe;
 
        sq = &nic->qs->sq[cqe_tx->sq_idx];
 
@@ -536,17 +537,21 @@ static void nicvf_snd_pkt_handler(struct net_device *netdev,
 
        nicvf_check_cqe_tx_errs(nic, cq, cqe_tx);
        skb = (struct sk_buff *)sq->skbuff[cqe_tx->sqe_ptr];
-       /* For TSO offloaded packets only one SQE will have a valid SKB */
        if (skb) {
+               /* Check for dummy descriptor used for HW TSO offload on 88xx */
+               if (hdr->dont_send) {
+                       /* Get actual TSO descriptors and free them */
+                       tso_sqe =
+                        (struct sq_hdr_subdesc *)GET_SQ_DESC(sq, hdr->rsvd2);
+                       nicvf_put_sq_desc(sq, tso_sqe->subdesc_cnt + 1);
+               }
                nicvf_put_sq_desc(sq, hdr->subdesc_cnt + 1);
                prefetch(skb);
                napi_consume_skb(skb, budget);
                sq->skbuff[cqe_tx->sqe_ptr] = (u64)NULL;
        } else {
-               /* In case of HW TSO, HW sends a CQE for each segment of a TSO
-                * packet instead of a single CQE for the whole TSO packet
-                * transmitted. Each of this CQE points to the same SQE, so
-                * avoid freeing same SQE multiple times.
+               /* In case of SW TSO on 88xx, only last segment will have
+                * a SKB attached, so just free SQEs here.
                 */
                if (!nic->hw_tso)
                        nicvf_put_sq_desc(sq, hdr->subdesc_cnt + 1);
@@ -1516,6 +1521,7 @@ static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        struct net_device *netdev;
        struct nicvf *nic;
        int    err, qcount;
+       u16    sdevid;
 
        err = pci_enable_device(pdev);
        if (err) {
@@ -1588,6 +1594,10 @@ static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        if (!pass1_silicon(nic->pdev))
                nic->hw_tso = true;
 
+       pci_read_config_word(nic->pdev, PCI_SUBSYSTEM_ID, &sdevid);
+       if (sdevid == 0xA134)
+               nic->t88 = true;
+
        /* Check if this VF is in QS only mode */
        if (nic->sqs_mode)
                return 0;