diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt.c')
-rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 208 |
1 files changed, 144 insertions, 64 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index f56245eeef7b..8a97640cdfe7 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -72,7 +72,8 @@ #include "bnxt_debugfs.h" #define BNXT_TX_TIMEOUT (5 * HZ) -#define BNXT_DEF_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_HW) +#define BNXT_DEF_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_HW | \ + NETIF_MSG_TX_ERR) MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Broadcom BCM573xx network driver"); @@ -365,6 +366,33 @@ static u16 bnxt_xmit_get_cfa_action(struct sk_buff *skb) return md_dst->u.port_info.port_id; } +static void bnxt_txr_db_kick(struct bnxt *bp, struct bnxt_tx_ring_info *txr, + u16 prod) +{ + bnxt_db_write(bp, &txr->tx_db, prod); + txr->kick_pending = 0; +} + +static bool bnxt_txr_netif_try_stop_queue(struct bnxt *bp, + struct bnxt_tx_ring_info *txr, + struct netdev_queue *txq) +{ + netif_tx_stop_queue(txq); + + /* netif_tx_stop_queue() must be done before checking + * tx index in bnxt_tx_avail() below, because in + * bnxt_tx_int(), we update tx index before checking for + * netif_tx_queue_stopped(). + */ + smp_mb(); + if (bnxt_tx_avail(bp, txr) > bp->tx_wake_thresh) { + netif_tx_wake_queue(txq); + return false; + } + + return true; +} + static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct bnxt *bp = netdev_priv(dev); @@ -384,6 +412,7 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) i = skb_get_queue_mapping(skb); if (unlikely(i >= bp->tx_nr_rings)) { dev_kfree_skb_any(skb); + atomic_long_inc(&dev->tx_dropped); return NETDEV_TX_OK; } @@ -393,8 +422,12 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) free_size = bnxt_tx_avail(bp, txr); if (unlikely(free_size < skb_shinfo(skb)->nr_frags + 2)) { - netif_tx_stop_queue(txq); - return NETDEV_TX_BUSY; + /* We must have raced with NAPI cleanup */ + if (net_ratelimit() && txr->kick_pending) + netif_warn(bp, tx_err, dev, + "bnxt: ring busy w/ flush pending!\n"); + if (bnxt_txr_netif_try_stop_queue(bp, txr, txq)) + return NETDEV_TX_BUSY; } length = skb->len; @@ -426,7 +459,10 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) if (ptp && ptp->tx_tstamp_en && !skb_is_gso(skb) && atomic_dec_if_positive(&ptp->tx_avail) >= 0) { - if (!bnxt_ptp_parse(skb, &ptp->tx_seqid)) { + if (!bnxt_ptp_parse(skb, &ptp->tx_seqid, + &ptp->tx_hdr_off)) { + if (vlan_tag_flags) + ptp->tx_hdr_off += VLAN_HLEN; lflags |= cpu_to_le32(TX_BD_FLAGS_STAMP); skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; } else { @@ -514,21 +550,16 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) normal_tx: if (length < BNXT_MIN_PKT_SIZE) { pad = BNXT_MIN_PKT_SIZE - length; - if (skb_pad(skb, pad)) { + if (skb_pad(skb, pad)) /* SKB already freed. */ - tx_buf->skb = NULL; - return NETDEV_TX_OK; - } + goto tx_kick_pending; length = BNXT_MIN_PKT_SIZE; } mapping = dma_map_single(&pdev->dev, skb->data, len, DMA_TO_DEVICE); - if (unlikely(dma_mapping_error(&pdev->dev, mapping))) { - dev_kfree_skb_any(skb); - tx_buf->skb = NULL; - return NETDEV_TX_OK; - } + if (unlikely(dma_mapping_error(&pdev->dev, mapping))) + goto tx_free; dma_unmap_addr_set(tx_buf, mapping, mapping); flags = (len << TX_BD_LEN_SHIFT) | TX_BD_TYPE_LONG_TX_BD | @@ -615,24 +646,17 @@ normal_tx: txr->tx_prod = prod; if (!netdev_xmit_more() || netif_xmit_stopped(txq)) - bnxt_db_write(bp, &txr->tx_db, prod); + bnxt_txr_db_kick(bp, txr, prod); + else + txr->kick_pending = 1; tx_done: if (unlikely(bnxt_tx_avail(bp, txr) <= MAX_SKB_FRAGS + 1)) { if (netdev_xmit_more() && !tx_buf->is_push) - bnxt_db_write(bp, &txr->tx_db, prod); - - netif_tx_stop_queue(txq); + bnxt_txr_db_kick(bp, txr, prod); - /* netif_tx_stop_queue() must be done before checking - * tx index in bnxt_tx_avail() below, because in - * bnxt_tx_int(), we update tx index before checking for - * netif_tx_queue_stopped(). - */ - smp_mb(); - if (bnxt_tx_avail(bp, txr) > bp->tx_wake_thresh) - netif_tx_wake_queue(txq); + bnxt_txr_netif_try_stop_queue(bp, txr, txq); } return NETDEV_TX_OK; @@ -645,7 +669,6 @@ tx_dma_error: /* start back at beginning and unmap skb */ prod = txr->tx_prod; tx_buf = &txr->tx_buf_ring[prod]; - tx_buf->skb = NULL; dma_unmap_single(&pdev->dev, dma_unmap_addr(tx_buf, mapping), skb_headlen(skb), PCI_DMA_TODEVICE); prod = NEXT_TX(prod); @@ -659,7 +682,13 @@ tx_dma_error: PCI_DMA_TODEVICE); } +tx_free: dev_kfree_skb_any(skb); +tx_kick_pending: + if (txr->kick_pending) + bnxt_txr_db_kick(bp, txr, txr->tx_prod); + txr->tx_buf_ring[txr->tx_prod].skb = NULL; + atomic_long_inc(&dev->tx_dropped); return NETDEV_TX_OK; } @@ -729,14 +758,9 @@ next_tx_int: smp_mb(); if (unlikely(netif_tx_queue_stopped(txq)) && - (bnxt_tx_avail(bp, txr) > bp->tx_wake_thresh)) { - __netif_tx_lock(txq, smp_processor_id()); - if (netif_tx_queue_stopped(txq) && - bnxt_tx_avail(bp, txr) > bp->tx_wake_thresh && - txr->dev_state != BNXT_DEV_STATE_CLOSING) - netif_tx_wake_queue(txq); - __netif_tx_unlock(txq); - } + bnxt_tx_avail(bp, txr) > bp->tx_wake_thresh && + READ_ONCE(txr->dev_state) != BNXT_DEV_STATE_CLOSING) + netif_tx_wake_queue(txq); } static struct page *__bnxt_alloc_rx_page(struct bnxt *bp, dma_addr_t *mapping, @@ -1671,11 +1695,16 @@ static inline struct sk_buff *bnxt_tpa_end(struct bnxt *bp, if ((tpa_info->flags2 & RX_CMP_FLAGS2_META_FORMAT_VLAN) && (skb->dev->features & BNXT_HW_FEATURE_VLAN_ALL_RX)) { - u16 vlan_proto = tpa_info->metadata >> - RX_CMP_FLAGS2_METADATA_TPID_SFT; + __be16 vlan_proto = htons(tpa_info->metadata >> + RX_CMP_FLAGS2_METADATA_TPID_SFT); u16 vtag = tpa_info->metadata & RX_CMP_FLAGS2_METADATA_TCI_MASK; - __vlan_hwaccel_put_tag(skb, htons(vlan_proto), vtag); + if (eth_type_vlan(vlan_proto)) { + __vlan_hwaccel_put_tag(skb, vlan_proto, vtag); + } else { + dev_kfree_skb(skb); + return NULL; + } } skb_checksum_none_assert(skb); @@ -1759,6 +1788,10 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr, if (!RX_CMP_VALID(rxcmp1, tmp_raw_cons)) return -EBUSY; + /* The valid test of the entry must be done first before + * reading any further. + */ + dma_rmb(); prod = rxr->rx_prod; if (cmp_type == CMP_TYPE_RX_L2_TPA_START_CMP) { @@ -1897,9 +1930,15 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr, (skb->dev->features & BNXT_HW_FEATURE_VLAN_ALL_RX)) { u32 meta_data = le32_to_cpu(rxcmp1->rx_cmp_meta_data); u16 vtag = meta_data & RX_CMP_FLAGS2_METADATA_TCI_MASK; - u16 vlan_proto = meta_data >> RX_CMP_FLAGS2_METADATA_TPID_SFT; + __be16 vlan_proto = htons(meta_data >> + RX_CMP_FLAGS2_METADATA_TPID_SFT); - __vlan_hwaccel_put_tag(skb, htons(vlan_proto), vtag); + if (eth_type_vlan(vlan_proto)) { + __vlan_hwaccel_put_tag(skb, vlan_proto, vtag); + } else { + dev_kfree_skb(skb); + goto next_rx; + } } skb_checksum_none_assert(skb); @@ -1975,6 +2014,10 @@ static int bnxt_force_rx_discard(struct bnxt *bp, if (!RX_CMP_VALID(rxcmp1, tmp_raw_cons)) return -EBUSY; + /* The valid test of the entry must be done first before + * reading any further. + */ + dma_rmb(); cmp_type = RX_CMP_TYPE(rxcmp); if (cmp_type == CMP_TYPE_RX_L2_CMP) { rxcmp1->rx_cmp_cfa_code_errors_v2 |= @@ -2440,6 +2483,10 @@ static int bnxt_poll_nitroa0(struct napi_struct *napi, int budget) if (!TX_CMP_VALID(txcmp, raw_cons)) break; + /* The valid test of the entry must be done first before + * reading any further. + */ + dma_rmb(); if ((TX_CMP_TYPE(txcmp) & 0x30) == 0x10) { tmp_raw_cons = NEXT_RAW_CMP(raw_cons); cp_cons = RING_CMP(tmp_raw_cons); @@ -7563,8 +7610,12 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp) bp->flags &= ~BNXT_FLAG_WOL_CAP; if (flags & FUNC_QCAPS_RESP_FLAGS_WOL_MAGICPKT_SUPPORTED) bp->flags |= BNXT_FLAG_WOL_CAP; - if (flags & FUNC_QCAPS_RESP_FLAGS_PTP_SUPPORTED) + if (flags & FUNC_QCAPS_RESP_FLAGS_PTP_SUPPORTED) { __bnxt_hwrm_ptp_qcfg(bp); + } else { + kfree(bp->ptp_cfg); + bp->ptp_cfg = NULL; + } } else { #ifdef CONFIG_BNXT_SRIOV struct bnxt_vf_info *vf = &bp->vf; @@ -9110,10 +9161,9 @@ static void bnxt_disable_napi(struct bnxt *bp) for (i = 0; i < bp->cp_nr_rings; i++) { struct bnxt_cp_ring_info *cpr = &bp->bnapi[i]->cp_ring; + napi_disable(&bp->bnapi[i]->napi); if (bp->bnapi[i]->rx_ring) cancel_work_sync(&cpr->dim.work); - - napi_disable(&bp->bnapi[i]->napi); } } @@ -9147,9 +9197,11 @@ void bnxt_tx_disable(struct bnxt *bp) if (bp->tx_ring) { for (i = 0; i < bp->tx_nr_rings; i++) { txr = &bp->tx_ring[i]; - txr->dev_state = BNXT_DEV_STATE_CLOSING; + WRITE_ONCE(txr->dev_state, BNXT_DEV_STATE_CLOSING); } } + /* Make sure napi polls see @dev_state change */ + synchronize_net(); /* Drop carrier first to prevent TX timeout */ netif_carrier_off(bp->dev); /* Stop all TX queues */ @@ -9163,8 +9215,10 @@ void bnxt_tx_enable(struct bnxt *bp) for (i = 0; i < bp->tx_nr_rings; i++) { txr = &bp->tx_ring[i]; - txr->dev_state = 0; + WRITE_ONCE(txr->dev_state, 0); } + /* Make sure napi polls see @dev_state change */ + synchronize_net(); netif_tx_wake_all_queues(bp->dev); if (bp->link_info.link_up) netif_carrier_on(bp->dev); @@ -10123,7 +10177,6 @@ static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init) } } - bnxt_ptp_start(bp); rc = bnxt_init_nic(bp, irq_re_init); if (rc) { netdev_err(bp->dev, "bnxt_init_nic err: %x\n", rc); @@ -10197,6 +10250,12 @@ int bnxt_half_open_nic(struct bnxt *bp) { int rc = 0; + if (test_bit(BNXT_STATE_ABORT_ERR, &bp->state)) { + netdev_err(bp->dev, "A previous firmware reset has not completed, aborting half open\n"); + rc = -ENODEV; + goto half_open_err; + } + rc = bnxt_alloc_mem(bp, false); if (rc) { netdev_err(bp->dev, "bnxt_alloc_mem err: %x\n", rc); @@ -10256,9 +10315,16 @@ static int bnxt_open(struct net_device *dev) rc = bnxt_hwrm_if_change(bp, true); if (rc) return rc; + + if (bnxt_ptp_init(bp)) { + netdev_warn(dev, "PTP initialization failed.\n"); + kfree(bp->ptp_cfg); + bp->ptp_cfg = NULL; + } rc = __bnxt_open_nic(bp, true, true); if (rc) { bnxt_hwrm_if_change(bp, false); + bnxt_ptp_clear(bp); } else { if (test_and_clear_bit(BNXT_STATE_FW_RESET_DET, &bp->state)) { if (!test_bit(BNXT_STATE_IN_FW_RESET, &bp->state)) { @@ -10349,6 +10415,7 @@ static int bnxt_close(struct net_device *dev) { struct bnxt *bp = netdev_priv(dev); + bnxt_ptp_clear(bp); bnxt_hwmon_close(bp); bnxt_close_nic(bp, true, true); bnxt_hwrm_shutdown_link(bp); @@ -10737,6 +10804,9 @@ static bool bnxt_rfs_supported(struct bnxt *bp) return true; return false; } + /* 212 firmware is broken for aRFS */ + if (BNXT_FW_MAJ(bp) == 212) + return false; if (BNXT_PF(bp) && !BNXT_CHIP_TYPE_NITRO_A0(bp)) return true; if (bp->flags & BNXT_FLAG_NEW_RSS_CAP) @@ -11335,6 +11405,7 @@ static void bnxt_fw_reset_close(struct bnxt *bp) bnxt_clear_int_mode(bp); pci_disable_device(bp->pdev); } + bnxt_ptp_clear(bp); __bnxt_close_nic(bp, true, false); bnxt_vf_reps_free(bp); bnxt_clear_int_mode(bp); @@ -11959,10 +12030,21 @@ static bool bnxt_fw_reset_timeout(struct bnxt *bp) (bp->fw_reset_max_dsecs * HZ / 10)); } +static void bnxt_fw_reset_abort(struct bnxt *bp, int rc) +{ + clear_bit(BNXT_STATE_IN_FW_RESET, &bp->state); + if (bp->fw_reset_state != BNXT_FW_RESET_STATE_POLL_VF) { + bnxt_ulp_start(bp, rc); + bnxt_dl_health_status_update(bp, false); + } + bp->fw_reset_state = 0; + dev_close(bp->dev); +} + static void bnxt_fw_reset_task(struct work_struct *work) { struct bnxt *bp = container_of(work, struct bnxt, fw_reset_task.work); - int rc; + int rc = 0; if (!test_bit(BNXT_STATE_IN_FW_RESET, &bp->state)) { netdev_err(bp->dev, "bnxt_fw_reset_task() called when not in fw reset mode!\n"); @@ -11992,6 +12074,11 @@ static void bnxt_fw_reset_task(struct work_struct *work) } bp->fw_reset_timestamp = jiffies; rtnl_lock(); + if (test_bit(BNXT_STATE_ABORT_ERR, &bp->state)) { + bnxt_fw_reset_abort(bp, rc); + rtnl_unlock(); + return; + } bnxt_fw_reset_close(bp); if (bp->fw_cap & BNXT_FW_CAP_ERR_RECOVER_RELOAD) { bp->fw_reset_state = BNXT_FW_RESET_STATE_POLL_FW_DOWN; @@ -12039,6 +12126,7 @@ static void bnxt_fw_reset_task(struct work_struct *work) if (val == 0xffff) { if (bnxt_fw_reset_timeout(bp)) { netdev_err(bp->dev, "Firmware reset aborted, PCI config space invalid\n"); + rc = -ETIMEDOUT; goto fw_reset_abort; } bnxt_queue_fw_reset_work(bp, HZ / 1000); @@ -12048,6 +12136,7 @@ static void bnxt_fw_reset_task(struct work_struct *work) clear_bit(BNXT_STATE_FW_FATAL_COND, &bp->state); if (pci_enable_device(bp->pdev)) { netdev_err(bp->dev, "Cannot re-enable PCI device\n"); + rc = -ENODEV; goto fw_reset_abort; } pci_set_master(bp->pdev); @@ -12074,18 +12163,18 @@ static void bnxt_fw_reset_task(struct work_struct *work) } rc = bnxt_open(bp->dev); if (rc) { - netdev_err(bp->dev, "bnxt_open_nic() failed\n"); - clear_bit(BNXT_STATE_IN_FW_RESET, &bp->state); - dev_close(bp->dev); + netdev_err(bp->dev, "bnxt_open() failed during FW reset\n"); + bnxt_fw_reset_abort(bp, rc); + rtnl_unlock(); + return; } bp->fw_reset_state = 0; /* Make sure fw_reset_state is 0 before clearing the flag */ smp_mb__before_atomic(); clear_bit(BNXT_STATE_IN_FW_RESET, &bp->state); - bnxt_ulp_start(bp, rc); - if (!rc) - bnxt_reenable_sriov(bp); + bnxt_ulp_start(bp, 0); + bnxt_reenable_sriov(bp); bnxt_vf_reps_alloc(bp); bnxt_vf_reps_open(bp); bnxt_dl_health_recovery_done(bp); @@ -12103,12 +12192,8 @@ fw_reset_abort_status: netdev_err(bp->dev, "fw_health_status 0x%x\n", sts); } fw_reset_abort: - clear_bit(BNXT_STATE_IN_FW_RESET, &bp->state); - if (bp->fw_reset_state != BNXT_FW_RESET_STATE_POLL_VF) - bnxt_dl_health_status_update(bp, false); - bp->fw_reset_state = 0; rtnl_lock(); - dev_close(bp->dev); + bnxt_fw_reset_abort(bp, rc); rtnl_unlock(); } @@ -12662,7 +12747,6 @@ static void bnxt_remove_one(struct pci_dev *pdev) if (BNXT_PF(bp)) devlink_port_type_clear(&bp->dl_port); - bnxt_ptp_clear(bp); pci_disable_pcie_error_reporting(pdev); unregister_netdev(dev); clear_bit(BNXT_STATE_IN_FW_RESET, &bp->state); @@ -13246,11 +13330,6 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) rc); } - if (bnxt_ptp_init(bp)) { - netdev_warn(dev, "PTP initialization failed.\n"); - kfree(bp->ptp_cfg); - bp->ptp_cfg = NULL; - } bnxt_inv_fw_health_reg(bp); bnxt_dl_register(bp); @@ -13436,7 +13515,8 @@ static pci_ers_result_t bnxt_io_error_detected(struct pci_dev *pdev, if (netif_running(netdev)) bnxt_close(netdev); - pci_disable_device(pdev); + if (pci_is_enabled(pdev)) + pci_disable_device(pdev); bnxt_free_ctx_mem(bp); kfree(bp->ctx); bp->ctx = NULL; |