diff options
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igc/igc_main.c | 839 |
1 files changed, 815 insertions, 24 deletions
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index 87a11879bf2d..9700527dd797 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -5,6 +5,11 @@ #include <linux/types.h> #include <linux/if_vlan.h> #include <linux/aer.h> +#include <linux/tcp.h> +#include <linux/udp.h> +#include <linux/ip.h> + +#include <net/ipv6.h> #include "igc.h" #include "igc_hw.h" @@ -36,6 +41,9 @@ static const struct igc_info *igc_info_tbl[] = { static const struct pci_device_id igc_pci_tbl[] = { { PCI_VDEVICE(INTEL, IGC_DEV_ID_I225_LM), board_base }, { PCI_VDEVICE(INTEL, IGC_DEV_ID_I225_V), board_base }, + { PCI_VDEVICE(INTEL, IGC_DEV_ID_I225_I), board_base }, + { PCI_VDEVICE(INTEL, IGC_DEV_ID_I220_V), board_base }, + { PCI_VDEVICE(INTEL, IGC_DEV_ID_I225_K), board_base }, /* required last entry */ {0, } }; @@ -72,6 +80,27 @@ void igc_reset(struct igc_adapter *adapter) { struct pci_dev *pdev = adapter->pdev; struct igc_hw *hw = &adapter->hw; + struct igc_fc_info *fc = &hw->fc; + u32 pba, hwm; + + /* Repartition PBA for greater than 9k MTU if required */ + pba = IGC_PBA_34K; + + /* flow control settings + * The high water mark must be low enough to fit one full frame + * after transmitting the pause frame. As such we must have enough + * space to allow for us to complete our current transmit and then + * receive the frame that is in progress from the link partner. + * Set it to: + * - the full Rx FIFO size minus one full Tx plus one full Rx frame + */ + hwm = (pba << 10) - (adapter->max_frame_size + MAX_JUMBO_FRAME_SIZE); + + fc->high_water = hwm & 0xFFFFFFF0; /* 16-byte granularity */ + fc->low_water = fc->high_water - 16; + fc->pause_time = 0xFFFF; + fc->send_xon = 1; + fc->current_mode = fc->requested_mode; hw->mac.ops.reset_hw(hw); @@ -328,8 +357,7 @@ static void igc_clean_rx_ring(struct igc_ring *rx_ring) { u16 i = rx_ring->next_to_clean; - if (rx_ring->skb) - dev_kfree_skb(rx_ring->skb); + dev_kfree_skb(rx_ring->skb); rx_ring->skb = NULL; /* Free all the Rx ring sk_buffs */ @@ -620,6 +648,55 @@ static void igc_configure_tx(struct igc_adapter *adapter) */ static void igc_setup_mrqc(struct igc_adapter *adapter) { + struct igc_hw *hw = &adapter->hw; + u32 j, num_rx_queues; + u32 mrqc, rxcsum; + u32 rss_key[10]; + + netdev_rss_key_fill(rss_key, sizeof(rss_key)); + for (j = 0; j < 10; j++) + wr32(IGC_RSSRK(j), rss_key[j]); + + num_rx_queues = adapter->rss_queues; + + if (adapter->rss_indir_tbl_init != num_rx_queues) { + for (j = 0; j < IGC_RETA_SIZE; j++) + adapter->rss_indir_tbl[j] = + (j * num_rx_queues) / IGC_RETA_SIZE; + adapter->rss_indir_tbl_init = num_rx_queues; + } + igc_write_rss_indir_tbl(adapter); + + /* Disable raw packet checksumming so that RSS hash is placed in + * descriptor on writeback. No need to enable TCP/UDP/IP checksum + * offloads as they are enabled by default + */ + rxcsum = rd32(IGC_RXCSUM); + rxcsum |= IGC_RXCSUM_PCSD; + + /* Enable Receive Checksum Offload for SCTP */ + rxcsum |= IGC_RXCSUM_CRCOFL; + + /* Don't need to set TUOFL or IPOFL, they default to 1 */ + wr32(IGC_RXCSUM, rxcsum); + + /* Generate RSS hash based on packet types, TCP/UDP + * port numbers and/or IPv4/v6 src and dst addresses + */ + mrqc = IGC_MRQC_RSS_FIELD_IPV4 | + IGC_MRQC_RSS_FIELD_IPV4_TCP | + IGC_MRQC_RSS_FIELD_IPV6 | + IGC_MRQC_RSS_FIELD_IPV6_TCP | + IGC_MRQC_RSS_FIELD_IPV6_TCP_EX; + + if (adapter->flags & IGC_FLAG_RSS_FIELD_IPV4_UDP) + mrqc |= IGC_MRQC_RSS_FIELD_IPV4_UDP; + if (adapter->flags & IGC_FLAG_RSS_FIELD_IPV6_UDP) + mrqc |= IGC_MRQC_RSS_FIELD_IPV6_UDP; + + mrqc |= IGC_MRQC_ENABLE_RSS_MQ; + + wr32(IGC_MRQC, mrqc); } /** @@ -718,8 +795,134 @@ static int igc_set_mac(struct net_device *netdev, void *p) return 0; } +/** + * igc_write_mc_addr_list - write multicast addresses to MTA + * @netdev: network interface device structure + * + * Writes multicast address list to the MTA hash table. + * Returns: -ENOMEM on failure + * 0 on no addresses written + * X on writing X addresses to MTA + **/ +static int igc_write_mc_addr_list(struct net_device *netdev) +{ + struct igc_adapter *adapter = netdev_priv(netdev); + struct igc_hw *hw = &adapter->hw; + struct netdev_hw_addr *ha; + u8 *mta_list; + int i; + + if (netdev_mc_empty(netdev)) { + /* nothing to program, so clear mc list */ + igc_update_mc_addr_list(hw, NULL, 0); + return 0; + } + + mta_list = kcalloc(netdev_mc_count(netdev), 6, GFP_ATOMIC); + if (!mta_list) + return -ENOMEM; + + /* The shared function expects a packed array of only addresses. */ + i = 0; + netdev_for_each_mc_addr(ha, netdev) + memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); + + igc_update_mc_addr_list(hw, mta_list, i); + kfree(mta_list); + + return netdev_mc_count(netdev); +} + +static void igc_tx_ctxtdesc(struct igc_ring *tx_ring, + struct igc_tx_buffer *first, + u32 vlan_macip_lens, u32 type_tucmd, + u32 mss_l4len_idx) +{ + struct igc_adv_tx_context_desc *context_desc; + u16 i = tx_ring->next_to_use; + struct timespec64 ts; + + context_desc = IGC_TX_CTXTDESC(tx_ring, i); + + i++; + tx_ring->next_to_use = (i < tx_ring->count) ? i : 0; + + /* set bits to identify this as an advanced context descriptor */ + type_tucmd |= IGC_TXD_CMD_DEXT | IGC_ADVTXD_DTYP_CTXT; + + /* For 82575, context index must be unique per ring. */ + if (test_bit(IGC_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) + mss_l4len_idx |= tx_ring->reg_idx << 4; + + context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); + context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd); + context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); + + /* We assume there is always a valid Tx time available. Invalid times + * should have been handled by the upper layers. + */ + if (tx_ring->launchtime_enable) { + ts = ktime_to_timespec64(first->skb->tstamp); + first->skb->tstamp = ktime_set(0, 0); + context_desc->launch_time = cpu_to_le32(ts.tv_nsec / 32); + } else { + context_desc->launch_time = 0; + } +} + +static inline bool igc_ipv6_csum_is_sctp(struct sk_buff *skb) +{ + unsigned int offset = 0; + + ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL); + + return offset == skb_checksum_start_offset(skb); +} + static void igc_tx_csum(struct igc_ring *tx_ring, struct igc_tx_buffer *first) { + struct sk_buff *skb = first->skb; + u32 vlan_macip_lens = 0; + u32 type_tucmd = 0; + + if (skb->ip_summed != CHECKSUM_PARTIAL) { +csum_failed: + if (!(first->tx_flags & IGC_TX_FLAGS_VLAN) && + !tx_ring->launchtime_enable) + return; + goto no_csum; + } + + switch (skb->csum_offset) { + case offsetof(struct tcphdr, check): + type_tucmd = IGC_ADVTXD_TUCMD_L4T_TCP; + /* fall through */ + case offsetof(struct udphdr, check): + break; + case offsetof(struct sctphdr, checksum): + /* validate that this is actually an SCTP request */ + if ((first->protocol == htons(ETH_P_IP) && + (ip_hdr(skb)->protocol == IPPROTO_SCTP)) || + (first->protocol == htons(ETH_P_IPV6) && + igc_ipv6_csum_is_sctp(skb))) { + type_tucmd = IGC_ADVTXD_TUCMD_L4T_SCTP; + break; + } + /* fall through */ + default: + skb_checksum_help(skb); + goto csum_failed; + } + + /* update TX checksum flag */ + first->tx_flags |= IGC_TX_FLAGS_CSUM; + vlan_macip_lens = skb_checksum_start_offset(skb) - + skb_network_offset(skb); +no_csum: + vlan_macip_lens |= skb_network_offset(skb) << IGC_ADVTXD_MACLEN_SHIFT; + vlan_macip_lens |= first->tx_flags & IGC_TX_FLAGS_VLAN_MASK; + + igc_tx_ctxtdesc(tx_ring, first, vlan_macip_lens, type_tucmd, 0); } static int __igc_maybe_stop_tx(struct igc_ring *tx_ring, const u16 size) @@ -791,7 +994,7 @@ static int igc_tx_map(struct igc_ring *tx_ring, struct igc_tx_buffer *tx_buffer; union igc_adv_tx_desc *tx_desc; u32 tx_flags = first->tx_flags; - struct skb_frag_struct *frag; + skb_frag_t *frag; u16 i = tx_ring->next_to_use; unsigned int data_len, size; dma_addr_t dma; @@ -890,13 +1093,8 @@ static int igc_tx_map(struct igc_ring *tx_ring, /* Make sure there is space in the ring for the next send. */ igc_maybe_stop_tx(tx_ring, DESC_NEEDED); - if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) { + if (netif_xmit_stopped(txring_txq(tx_ring)) || !netdev_xmit_more()) { writel(i, tx_ring->tail); - - /* we need this if more than one processor can write to our tail - * at a time, it synchronizes IO on IA64/Altix systems - */ - mmiowb(); } return 0; @@ -950,7 +1148,8 @@ static netdev_tx_t igc_xmit_frame_ring(struct sk_buff *skb, * otherwise try next time */ for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) - count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); + count += TXD_USE_COUNT(skb_frag_size( + &skb_shinfo(skb)->frags[f])); if (igc_maybe_stop_tx(tx_ring, count + 3)) { /* this is a hard error */ @@ -1002,6 +1201,46 @@ static netdev_tx_t igc_xmit_frame(struct sk_buff *skb, return igc_xmit_frame_ring(skb, igc_tx_queue_mapping(adapter, skb)); } +static void igc_rx_checksum(struct igc_ring *ring, + union igc_adv_rx_desc *rx_desc, + struct sk_buff *skb) +{ + skb_checksum_none_assert(skb); + + /* Ignore Checksum bit is set */ + if (igc_test_staterr(rx_desc, IGC_RXD_STAT_IXSM)) + return; + + /* Rx checksum disabled via ethtool */ + if (!(ring->netdev->features & NETIF_F_RXCSUM)) + return; + + /* TCP/UDP checksum error bit is set */ + if (igc_test_staterr(rx_desc, + IGC_RXDEXT_STATERR_TCPE | + IGC_RXDEXT_STATERR_IPE)) { + /* work around errata with sctp packets where the TCPE aka + * L4E bit is set incorrectly on 64 byte (60 byte w/o crc) + * packets (aka let the stack check the crc32c) + */ + if (!(skb->len == 60 && + test_bit(IGC_RING_FLAG_RX_SCTP_CSUM, &ring->flags))) { + u64_stats_update_begin(&ring->rx_syncp); + ring->rx_stats.csum_err++; + u64_stats_update_end(&ring->rx_syncp); + } + /* let the stack verify checksum errors */ + return; + } + /* It must be a TCP or UDP packet with a valid checksum */ + if (igc_test_staterr(rx_desc, IGC_RXD_STAT_TCPCS | + IGC_RXD_STAT_UDPCS)) + skb->ip_summed = CHECKSUM_UNNECESSARY; + + dev_dbg(ring->dev, "cksum success: bits %08X\n", + le32_to_cpu(rx_desc->wb.upper.status_error)); +} + static inline void igc_rx_hash(struct igc_ring *ring, union igc_adv_rx_desc *rx_desc, struct sk_buff *skb) @@ -1028,6 +1267,8 @@ static void igc_process_skb_fields(struct igc_ring *rx_ring, { igc_rx_hash(rx_ring, rx_desc, skb); + igc_rx_checksum(rx_ring, rx_desc, skb); + skb_record_rx_queue(skb, rx_ring->queue_index); skb->protocol = eth_type_trans(skb, rx_ring->netdev); @@ -1150,7 +1391,7 @@ static struct sk_buff *igc_construct_skb(struct igc_ring *rx_ring, /* Determine available headroom for copy */ headlen = size; if (headlen > IGC_RX_HDR_LEN) - headlen = eth_get_headlen(va, IGC_RX_HDR_LEN); + headlen = eth_get_headlen(skb->dev, va, IGC_RX_HDR_LEN); /* align pull length to size of long to optimize memcpy performance */ memcpy(__skb_put(skb, headlen), va, ALIGN(headlen, sizeof(long))); @@ -1738,12 +1979,200 @@ void igc_up(struct igc_adapter *adapter) * igc_update_stats - Update the board statistics counters * @adapter: board private structure */ -static void igc_update_stats(struct igc_adapter *adapter) +void igc_update_stats(struct igc_adapter *adapter) { + struct rtnl_link_stats64 *net_stats = &adapter->stats64; + struct pci_dev *pdev = adapter->pdev; + struct igc_hw *hw = &adapter->hw; + u64 _bytes, _packets; + u64 bytes, packets; + unsigned int start; + u32 mpc; + int i; + + /* Prevent stats update while adapter is being reset, or if the pci + * connection is down. + */ + if (adapter->link_speed == 0) + return; + if (pci_channel_offline(pdev)) + return; + + packets = 0; + bytes = 0; + + rcu_read_lock(); + for (i = 0; i < adapter->num_rx_queues; i++) { + struct igc_ring *ring = adapter->rx_ring[i]; + u32 rqdpc = rd32(IGC_RQDPC(i)); + + if (hw->mac.type >= igc_i225) + wr32(IGC_RQDPC(i), 0); + + if (rqdpc) { + ring->rx_stats.drops += rqdpc; + net_stats->rx_fifo_errors += rqdpc; + } + + do { + start = u64_stats_fetch_begin_irq(&ring->rx_syncp); + _bytes = ring->rx_stats.bytes; + _packets = ring->rx_stats.packets; + } while (u64_stats_fetch_retry_irq(&ring->rx_syncp, start)); + bytes += _bytes; + packets += _packets; + } + + net_stats->rx_bytes = bytes; + net_stats->rx_packets = packets; + + packets = 0; + bytes = 0; + for (i = 0; i < adapter->num_tx_queues; i++) { + struct igc_ring *ring = adapter->tx_ring[i]; + + do { + start = u64_stats_fetch_begin_irq(&ring->tx_syncp); + _bytes = ring->tx_stats.bytes; + _packets = ring->tx_stats.packets; + } while (u64_stats_fetch_retry_irq(&ring->tx_syncp, start)); + bytes += _bytes; + packets += _packets; + } + net_stats->tx_bytes = bytes; + net_stats->tx_packets = packets; + rcu_read_unlock(); + + /* read stats registers */ + adapter->stats.crcerrs += rd32(IGC_CRCERRS); + adapter->stats.gprc += rd32(IGC_GPRC); + adapter->stats.gorc += rd32(IGC_GORCL); + rd32(IGC_GORCH); /* clear GORCL */ + adapter->stats.bprc += rd32(IGC_BPRC); + adapter->stats.mprc += rd32(IGC_MPRC); + adapter->stats.roc += rd32(IGC_ROC); + + adapter->stats.prc64 += rd32(IGC_PRC64); + adapter->stats.prc127 += rd32(IGC_PRC127); + adapter->stats.prc255 += rd32(IGC_PRC255); + adapter->stats.prc511 += rd32(IGC_PRC511); + adapter->stats.prc1023 += rd32(IGC_PRC1023); + adapter->stats.prc1522 += rd32(IGC_PRC1522); + adapter->stats.symerrs += rd32(IGC_SYMERRS); + adapter->stats.sec += rd32(IGC_SEC); + + mpc = rd32(IGC_MPC); + adapter->stats.mpc += mpc; + net_stats->rx_fifo_errors += mpc; + adapter->stats.scc += rd32(IGC_SCC); + adapter->stats.ecol += rd32(IGC_ECOL); + adapter->stats.mcc += rd32(IGC_MCC); + adapter->stats.latecol += rd32(IGC_LATECOL); + adapter->stats.dc += rd32(IGC_DC); + adapter->stats.rlec += rd32(IGC_RLEC); + adapter->stats.xonrxc += rd32(IGC_XONRXC); + adapter->stats.xontxc += rd32(IGC_XONTXC); + adapter->stats.xoffrxc += rd32(IGC_XOFFRXC); + adapter->stats.xofftxc += rd32(IGC_XOFFTXC); + adapter->stats.fcruc += rd32(IGC_FCRUC); + adapter->stats.gptc += rd32(IGC_GPTC); + adapter->stats.gotc += rd32(IGC_GOTCL); + rd32(IGC_GOTCH); /* clear GOTCL */ + adapter->stats.rnbc += rd32(IGC_RNBC); + adapter->stats.ruc += rd32(IGC_RUC); + adapter->stats.rfc += rd32(IGC_RFC); + adapter->stats.rjc += rd32(IGC_RJC); + adapter->stats.tor += rd32(IGC_TORH); + adapter->stats.tot += rd32(IGC_TOTH); + adapter->stats.tpr += rd32(IGC_TPR); + + adapter->stats.ptc64 += rd32(IGC_PTC64); + adapter->stats.ptc127 += rd32(IGC_PTC127); + adapter->stats.ptc255 += rd32(IGC_PTC255); + adapter->stats.ptc511 += rd32(IGC_PTC511); + adapter->stats.ptc1023 += rd32(IGC_PTC1023); + adapter->stats.ptc1522 += rd32(IGC_PTC1522); + + adapter->stats.mptc += rd32(IGC_MPTC); + adapter->stats.bptc += rd32(IGC_BPTC); + + adapter->stats.tpt += rd32(IGC_TPT); + adapter->stats.colc += rd32(IGC_COLC); + + adapter->stats.algnerrc += rd32(IGC_ALGNERRC); + + adapter->stats.tsctc += rd32(IGC_TSCTC); + adapter->stats.tsctfc += rd32(IGC_TSCTFC); + + adapter->stats.iac += rd32(IGC_IAC); + adapter->stats.icrxoc += rd32(IGC_ICRXOC); + adapter->stats.icrxptc += rd32(IGC_ICRXPTC); + adapter->stats.icrxatc += rd32(IGC_ICRXATC); + adapter->stats.ictxptc += rd32(IGC_ICTXPTC); + adapter->stats.ictxatc += rd32(IGC_ICTXATC); + adapter->stats.ictxqec += rd32(IGC_ICTXQEC); + adapter->stats.ictxqmtc += rd32(IGC_ICTXQMTC); + adapter->stats.icrxdmtc += rd32(IGC_ICRXDMTC); + + /* Fill out the OS statistics structure */ + net_stats->multicast = adapter->stats.mprc; + net_stats->collisions = adapter->stats.colc; + + /* Rx Errors */ + + /* RLEC on some newer hardware can be incorrect so build + * our own version based on RUC and ROC + */ + net_stats->rx_errors = adapter->stats.rxerrc + + adapter->stats.crcerrs + adapter->stats.algnerrc + + adapter->stats.ruc + adapter->stats.roc + + adapter->stats.cexterr; + net_stats->rx_length_errors = adapter->stats.ruc + + adapter->stats.roc; + net_stats->rx_crc_errors = adapter->stats.crcerrs; + net_stats->rx_frame_errors = adapter->stats.algnerrc; + net_stats->rx_missed_errors = adapter->stats.mpc; + + /* Tx Errors */ + net_stats->tx_errors = adapter->stats.ecol + + adapter->stats.latecol; + net_stats->tx_aborted_errors = adapter->stats.ecol; + net_stats->tx_window_errors = adapter->stats.latecol; + net_stats->tx_carrier_errors = adapter->stats.tncrs; + + /* Tx Dropped needs to be maintained elsewhere */ + + /* Management Stats */ + adapter->stats.mgptc += rd32(IGC_MGTPTC); + adapter->stats.mgprc += rd32(IGC_MGTPRC); + adapter->stats.mgpdc += rd32(IGC_MGTPDC); } static void igc_nfc_filter_exit(struct igc_adapter *adapter) { + struct igc_nfc_filter *rule; + + spin_lock(&adapter->nfc_lock); + + hlist_for_each_entry(rule, &adapter->nfc_filter_list, nfc_node) + igc_erase_filter(adapter, rule); + + hlist_for_each_entry(rule, &adapter->cls_flower_list, nfc_node) + igc_erase_filter(adapter, rule); + + spin_unlock(&adapter->nfc_lock); +} + +static void igc_nfc_filter_restore(struct igc_adapter *adapter) +{ + struct igc_nfc_filter *rule; + + spin_lock(&adapter->nfc_lock); + + hlist_for_each_entry(rule, &adapter->nfc_filter_list, nfc_node) + igc_add_filter(adapter, rule); + + spin_unlock(&adapter->nfc_lock); } /** @@ -1843,7 +2272,6 @@ static int igc_change_mtu(struct net_device *netdev, int new_mtu) { int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; struct igc_adapter *adapter = netdev_priv(netdev); - struct pci_dev *pdev = adapter->pdev; /* adjust max frame to be at least the size of a standard frame */ if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) @@ -1858,8 +2286,8 @@ static int igc_change_mtu(struct net_device *netdev, int new_mtu) if (netif_running(netdev)) igc_down(adapter); - dev_info(&pdev->dev, "changing MTU from %d to %d\n", - netdev->mtu, new_mtu); + netdev_dbg(netdev, "changing MTU from %d to %d\n", + netdev->mtu, new_mtu); netdev->mtu = new_mtu; if (netif_running(netdev)) @@ -1890,6 +2318,86 @@ static struct net_device_stats *igc_get_stats(struct net_device *netdev) return &netdev->stats; } +static netdev_features_t igc_fix_features(struct net_device *netdev, + netdev_features_t features) +{ + /* Since there is no support for separate Rx/Tx vlan accel + * enable/disable make sure Tx flag is always in same state as Rx. + */ + if (features & NETIF_F_HW_VLAN_CTAG_RX) + features |= NETIF_F_HW_VLAN_CTAG_TX; + else + features &= ~NETIF_F_HW_VLAN_CTAG_TX; + + return features; +} + +static int igc_set_features(struct net_device *netdev, + netdev_features_t features) +{ + netdev_features_t changed = netdev->features ^ features; + struct igc_adapter *adapter = netdev_priv(netdev); + + /* Add VLAN support */ + if (!(changed & (NETIF_F_RXALL | NETIF_F_NTUPLE))) + return 0; + + if (!(features & NETIF_F_NTUPLE)) { + struct hlist_node *node2; + struct igc_nfc_filter *rule; + + spin_lock(&adapter->nfc_lock); + hlist_for_each_entry_safe(rule, node2, + &adapter->nfc_filter_list, nfc_node) { + igc_erase_filter(adapter, rule); + hlist_del(&rule->nfc_node); + kfree(rule); + } + spin_unlock(&adapter->nfc_lock); + adapter->nfc_filter_count = 0; + } + + netdev->features = features; + + if (netif_running(netdev)) + igc_reinit_locked(adapter); + else + igc_reset(adapter); + + return 1; +} + +static netdev_features_t +igc_features_check(struct sk_buff *skb, struct net_device *dev, + netdev_features_t features) +{ + unsigned int network_hdr_len, mac_hdr_len; + + /* Make certain the headers can be described by a context descriptor */ + mac_hdr_len = skb_network_header(skb) - skb->data; + if (unlikely(mac_hdr_len > IGC_MAX_MAC_HDR_LEN)) + return features & ~(NETIF_F_HW_CSUM | + NETIF_F_SCTP_CRC | + NETIF_F_HW_VLAN_CTAG_TX | + NETIF_F_TSO | + NETIF_F_TSO6); + + network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb); + if (unlikely(network_hdr_len > IGC_MAX_NETWORK_HDR_LEN)) + return features & ~(NETIF_F_HW_CSUM | + NETIF_F_SCTP_CRC | + NETIF_F_TSO | + NETIF_F_TSO6); + + /* We can only support IPv4 TSO in tunnels if we can mangle the + * inner IP ID field, so strip TSO if MANGLEID is not supported. + */ + if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) + features &= ~NETIF_F_TSO; + + return features; +} + /** * igc_configure - configure the hardware for RX and TX * @adapter: private board structure @@ -1906,6 +2414,7 @@ static void igc_configure(struct igc_adapter *adapter) igc_setup_mrqc(adapter); igc_setup_rctl(adapter); + igc_nfc_filter_restore(adapter); igc_configure_tx(adapter); igc_configure_rx(adapter); @@ -1967,6 +2476,231 @@ static void igc_set_default_mac_filter(struct igc_adapter *adapter) igc_rar_set_index(adapter, 0); } +/* If the filter to be added and an already existing filter express + * the same address and address type, it should be possible to only + * override the other configurations, for example the queue to steer + * traffic. + */ +static bool igc_mac_entry_can_be_used(const struct igc_mac_addr *entry, + const u8 *addr, const u8 flags) +{ + if (!(entry->state & IGC_MAC_STATE_IN_USE)) + return true; + + if ((entry->state & IGC_MAC_STATE_SRC_ADDR) != + (flags & IGC_MAC_STATE_SRC_ADDR)) + return false; + + if (!ether_addr_equal(addr, entry->addr)) + return false; + + return true; +} + +/* Add a MAC filter for 'addr' directing matching traffic to 'queue', + * 'flags' is used to indicate what kind of match is made, match is by + * default for the destination address, if matching by source address + * is desired the flag IGC_MAC_STATE_SRC_ADDR can be used. + */ +static int igc_add_mac_filter_flags(struct igc_adapter *adapter, + const u8 *addr, const u8 queue, + const u8 flags) +{ + struct igc_hw *hw = &adapter->hw; + int rar_entries = hw->mac.rar_entry_count; + int i; + + if (is_zero_ether_addr(addr)) + return -EINVAL; + + /* Search for the first empty entry in the MAC table. + * Do not touch entries at the end of the table reserved for the VF MAC + * addresses. + */ + for (i = 0; i < rar_entries; i++) { + if (!igc_mac_entry_can_be_used(&adapter->mac_table[i], + addr, flags)) + continue; + + ether_addr_copy(adapter->mac_table[i].addr, addr); + adapter->mac_table[i].queue = queue; + adapter->mac_table[i].state |= IGC_MAC_STATE_IN_USE | flags; + + igc_rar_set_index(adapter, i); + return i; + } + + return -ENOSPC; +} + +int igc_add_mac_steering_filter(struct igc_adapter *adapter, + const u8 *addr, u8 queue, u8 flags) +{ + return igc_add_mac_filter_flags(adapter, addr, queue, + IGC_MAC_STATE_QUEUE_STEERING | flags); +} + +/* Remove a MAC filter for 'addr' directing matching traffic to + * 'queue', 'flags' is used to indicate what kind of match need to be + * removed, match is by default for the destination address, if + * matching by source address is to be removed the flag + * IGC_MAC_STATE_SRC_ADDR can be used. + */ +static int igc_del_mac_filter_flags(struct igc_adapter *adapter, + const u8 *addr, const u8 queue, + const u8 flags) +{ + struct igc_hw *hw = &adapter->hw; + int rar_entries = hw->mac.rar_entry_count; + int i; + + if (is_zero_ether_addr(addr)) + return -EINVAL; + + /* Search for matching entry in the MAC table based on given address + * and queue. Do not touch entries at the end of the table reserved + * for the VF MAC addresses. + */ + for (i = 0; i < rar_entries; i++) { + if (!(adapter->mac_table[i].state & IGC_MAC_STATE_IN_USE)) + continue; + if ((adapter->mac_table[i].state & flags) != flags) + continue; + if (adapter->mac_table[i].queue != queue) + continue; + if (!ether_addr_equal(adapter->mac_table[i].addr, addr)) + continue; + + /* When a filter for the default address is "deleted", + * we return it to its initial configuration + */ + if (adapter->mac_table[i].state & IGC_MAC_STATE_DEFAULT) { + adapter->mac_table[i].state = + IGC_MAC_STATE_DEFAULT | IGC_MAC_STATE_IN_USE; + } else { + adapter->mac_table[i].state = 0; + adapter->mac_table[i].queue = 0; + memset(adapter->mac_table[i].addr, 0, ETH_ALEN); + } + + igc_rar_set_index(adapter, i); + return 0; + } + + return -ENOENT; +} + +int igc_del_mac_steering_filter(struct igc_adapter *adapter, + const u8 *addr, u8 queue, u8 flags) +{ + return igc_del_mac_filter_flags(adapter, addr, queue, + IGC_MAC_STATE_QUEUE_STEERING | flags); +} + +/* Add a MAC filter for 'addr' directing matching traffic to 'queue', + * 'flags' is used to indicate what kind of match is made, match is by + * default for the destination address, if matching by source address + * is desired the flag IGC_MAC_STATE_SRC_ADDR can be used. + */ +static int igc_add_mac_filter(struct igc_adapter *adapter, + const u8 *addr, const u8 queue) +{ + struct igc_hw *hw = &adapter->hw; + int rar_entries = hw->mac.rar_entry_count; + int i; + + if (is_zero_ether_addr(addr)) + return -EINVAL; + + /* Search for the first empty entry in the MAC table. + * Do not touch entries at the end of the table reserved for the VF MAC + * addresses. + */ + for (i = 0; i < rar_entries; i++) { + if (!igc_mac_entry_can_be_used(&adapter->mac_table[i], + addr, 0)) + continue; + + ether_addr_copy(adapter->mac_table[i].addr, addr); + adapter->mac_table[i].queue = queue; + adapter->mac_table[i].state |= IGC_MAC_STATE_IN_USE; + + igc_rar_set_index(adapter, i); + return i; + } + + return -ENOSPC; +} + +/* Remove a MAC filter for 'addr' directing matching traffic to + * 'queue', 'flags' is used to indicate what kind of match need to be + * removed, match is by default for the destination address, if + * matching by source address is to be removed the flag + * IGC_MAC_STATE_SRC_ADDR can be used. + */ +static int igc_del_mac_filter(struct igc_adapter *adapter, + const u8 *addr, const u8 queue) +{ + struct igc_hw *hw = &adapter->hw; + int rar_entries = hw->mac.rar_entry_count; + int i; + + if (is_zero_ether_addr(addr)) + return -EINVAL; + + /* Search for matching entry in the MAC table based on given address + * and queue. Do not touch entries at the end of the table reserved + * for the VF MAC addresses. + */ + for (i = 0; i < rar_entries; i++) { + if (!(adapter->mac_table[i].state & IGC_MAC_STATE_IN_USE)) + continue; + if (adapter->mac_table[i].state != 0) + continue; + if (adapter->mac_table[i].queue != queue) + continue; + if (!ether_addr_equal(adapter->mac_table[i].addr, addr)) + continue; + + /* When a filter for the default address is "deleted", + * we return it to its initial configuration + */ + if (adapter->mac_table[i].state & IGC_MAC_STATE_DEFAULT) { + adapter->mac_table[i].state = + IGC_MAC_STATE_DEFAULT | IGC_MAC_STATE_IN_USE; + adapter->mac_table[i].queue = 0; + } else { + adapter->mac_table[i].state = 0; + adapter->mac_table[i].queue = 0; + memset(adapter->mac_table[i].addr, 0, ETH_ALEN); + } + + igc_rar_set_index(adapter, i); + return 0; + } + + return -ENOENT; +} + +static int igc_uc_sync(struct net_device *netdev, const unsigned char *addr) +{ + struct igc_adapter *adapter = netdev_priv(netdev); + int ret; + + ret = igc_add_mac_filter(adapter, addr, adapter->num_rx_queues); + + return min_t(int, ret, 0); +} + +static int igc_uc_unsync(struct net_device *netdev, const unsigned char *addr) +{ + struct igc_adapter *adapter = netdev_priv(netdev); + + igc_del_mac_filter(adapter, addr, adapter->num_rx_queues); + + return 0; +} + /** * igc_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set * @netdev: network interface device structure @@ -1978,6 +2712,44 @@ static void igc_set_default_mac_filter(struct igc_adapter *adapter) */ static void igc_set_rx_mode(struct net_device *netdev) { + struct igc_adapter *adapter = netdev_priv(netdev); + struct igc_hw *hw = &adapter->hw; + u32 rctl = 0, rlpml = MAX_JUMBO_FRAME_SIZE; + int count; + + /* Check for Promiscuous and All Multicast modes */ + if (netdev->flags & IFF_PROMISC) { + rctl |= IGC_RCTL_UPE | IGC_RCTL_MPE; + } else { + if (netdev->flags & IFF_ALLMULTI) { + rctl |= IGC_RCTL_MPE; + } else { + /* Write addresses to the MTA, if the attempt fails + * then we should just turn on promiscuous mode so + * that we can at least receive multicast traffic + */ + count = igc_write_mc_addr_list(netdev); + if (count < 0) + rctl |= IGC_RCTL_MPE; + } + } + + /* Write addresses to available RAR registers, if there is not + * sufficient space to store all the addresses then enable + * unicast promiscuous mode + */ + if (__dev_uc_sync(netdev, igc_uc_sync, igc_uc_unsync)) + rctl |= IGC_RCTL_UPE; + + /* update state of unicast and multicast */ + rctl |= rd32(IGC_RCTL) & ~(IGC_RCTL_UPE | IGC_RCTL_MPE); + wr32(IGC_RCTL, rctl); + +#if (PAGE_SIZE < 8192) + if (adapter->max_frame_size <= IGC_MAX_FRAME_BUILD_SKB) + rlpml = IGC_MAX_FRAME_BUILD_SKB; +#endif + wr32(IGC_RLPML, rlpml); } /** @@ -3431,9 +4203,13 @@ static const struct net_device_ops igc_netdev_ops = { .ndo_open = igc_open, .ndo_stop = igc_close, .ndo_start_xmit = igc_xmit_frame, + .ndo_set_rx_mode = igc_set_rx_mode, .ndo_set_mac_address = igc_set_mac, .ndo_change_mtu = igc_change_mtu, .ndo_get_stats = igc_get_stats, + .ndo_fix_features = igc_fix_features, + .ndo_set_features = igc_set_features, + .ndo_features_check = igc_features_check, }; /* PCIe configuration access */ @@ -3454,13 +4230,11 @@ void igc_write_pci_cfg(struct igc_hw *hw, u32 reg, u16 *value) s32 igc_read_pcie_cap_reg(struct igc_hw *hw, u32 reg, u16 *value) { struct igc_adapter *adapter = hw->back; - u16 cap_offset; - cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); - if (!cap_offset) + if (!pci_is_pcie(adapter->pdev)) return -IGC_ERR_CONFIG; - pci_read_config_word(adapter->pdev, cap_offset + reg, value); + pcie_capability_read_word(adapter->pdev, reg, value); return IGC_SUCCESS; } @@ -3468,13 +4242,11 @@ s32 igc_read_pcie_cap_reg(struct igc_hw *hw, u32 reg, u16 *value) s32 igc_write_pcie_cap_reg(struct igc_hw *hw, u32 reg, u16 *value) { struct igc_adapter *adapter = hw->back; - u16 cap_offset; - cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); - if (!cap_offset) + if (!pci_is_pcie(adapter->pdev)) return -IGC_ERR_CONFIG; - pci_write_config_word(adapter->pdev, cap_offset + reg, *value); + pcie_capability_write_word(adapter->pdev, reg, *value); return IGC_SUCCESS; } @@ -3497,6 +4269,8 @@ u32 igc_rd32(struct igc_hw *hw, u32 reg) hw->hw_addr = NULL; netif_device_detach(netdev); netdev_err(netdev, "PCIe link lost, device now detached\n"); + WARN(pci_device_is_present(igc->pdev), + "igc: Failed to read reg 0x%x!\n", reg); } return value; @@ -3658,11 +4432,20 @@ static int igc_probe(struct pci_dev *pdev, if (err) goto err_sw_init; + /* Add supported features to the features list*/ + netdev->features |= NETIF_F_RXCSUM; + netdev->features |= NETIF_F_HW_CSUM; + netdev->features |= NETIF_F_SCTP_CRC; + /* setup the private structure */ err = igc_sw_init(adapter); if (err) goto err_sw_init; + /* copy netdev features into list of user selectable features */ + netdev->hw_features |= NETIF_F_NTUPLE; + netdev->hw_features |= netdev->features; + /* MTU range: 68 - 9216 */ netdev->min_mtu = ETH_MIN_MTU; netdev->max_mtu = MAX_STD_JUMBO_FRAME_SIZE; @@ -3672,6 +4455,15 @@ static int igc_probe(struct pci_dev *pdev, */ hw->mac.ops.reset_hw(hw); + if (igc_get_flash_presence_i225(hw)) { + if (hw->nvm.ops.validate(hw) < 0) { + dev_err(&pdev->dev, + "The NVM Checksum Is Not Valid\n"); + err = -EIO; + goto err_eeprom; + } + } + if (eth_platform_get_mac_address(&pdev->dev, hw->mac.addr)) { /* copy the MAC address out of the NVM */ if (hw->mac.ops.read_mac_addr(hw)) @@ -3781,7 +4573,6 @@ static void igc_remove(struct pci_dev *pdev) pci_release_mem_regions(pdev); kfree(adapter->mac_table); - kfree(adapter->shadow_vfta); free_netdev(netdev); pci_disable_pcie_error_reporting(pdev); |
