lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <20231130114327.1530225-9-justinlai0215@realtek.com> Date: Thu, 30 Nov 2023 19:43:22 +0800 From: Justin Lai <justinlai0215@...ltek.com> To: <kuba@...nel.org> CC: <davem@...emloft.net>, <edumazet@...gle.com>, <pabeni@...hat.com>, <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>, <andrew@...n.ch>, <pkshih@...ltek.com>, <larry.chiu@...ltek.com>, Justin Lai <justinlai0215@...ltek.com> Subject: [PATCH net-next v13 08/13] rtase: Implement net_device_ops 1. Implement .ndo_set_rx_mode so that the device can change address list filtering. 2. Implement .ndo_set_mac_address so that mac address can be changed. 3. Implement .ndo_change_mtu so that mtu can be changed. 4. Implement .ndo_tx_timeout to perform related processing when the transmitter does not make any progress. 5. Implement .ndo_get_stats64 to provide statistics that are called when the user wants to get network device usage. 6. Implement .ndo_vlan_rx_add_vid to register VLAN ID when the device supports VLAN filtering. 7. Implement .ndo_vlan_rx_kill_vid to unregister VLAN ID when the device supports VLAN filtering. 8. Implement the .ndo_setup_tc to enable setting any "tc" scheduler, classifier or action on dev. 9. Implement .ndo_fix_features enables adjusting requested feature flags based on device-specific constraints. 10. Implement .ndo_set_features enables updating device configuration to new features. Signed-off-by: Justin Lai <justinlai0215@...ltek.com> --- .../net/ethernet/realtek/rtase/rtase_main.c | 237 ++++++++++++++++++ 1 file changed, 237 insertions(+) diff --git a/drivers/net/ethernet/realtek/rtase/rtase_main.c b/drivers/net/ethernet/realtek/rtase/rtase_main.c index 16c1f92c4274..9e446bc46918 100644 --- a/drivers/net/ethernet/realtek/rtase/rtase_main.c +++ b/drivers/net/ethernet/realtek/rtase/rtase_main.c @@ -1420,6 +1420,11 @@ static netdev_tx_t rtase_start_xmit(struct sk_buff *skb, return NETDEV_TX_BUSY; } +static void rtase_set_rx_mode(struct net_device *dev) +{ + rtase_hw_set_rx_packet_filter(dev); +} + static void rtase_enable_eem_write(const struct rtase_private *tp) { u8 val; @@ -1452,6 +1457,203 @@ static void rtase_rar_set(const struct rtase_private *tp, const u8 *addr) rtase_w16(tp, RTASE_LBK_CTRL, LBK_ATLD | LBK_CLR); } +static int rtase_set_mac_address(struct net_device *dev, void *p) +{ + struct rtase_private *tp = netdev_priv(dev); + int ret; + + ret = eth_mac_addr(dev, p); + if (ret) + return ret; + + rtase_rar_set(tp, dev->dev_addr); + + return 0; +} + +static int rtase_change_mtu(struct net_device *dev, int new_mtu) +{ + dev->mtu = new_mtu; + + netdev_update_features(dev); + + return 0; +} + +static void rtase_wait_for_quiescence(const struct net_device *dev) +{ + struct rtase_private *tp = netdev_priv(dev); + struct rtase_int_vector *ivec; + u32 i; + + for (i = 0; i < tp->int_nums; i++) { + ivec = &tp->int_vector[i]; + synchronize_irq(ivec->irq); + /* wait for any pending NAPI task to complete */ + napi_disable(&ivec->napi); + } + + rtase_irq_dis_and_clear(tp); + + for (i = 0; i < tp->int_nums; i++) { + ivec = &tp->int_vector[i]; + napi_enable(&ivec->napi); + } +} + +static void rtase_sw_reset(struct net_device *dev) +{ + struct rtase_private *tp = netdev_priv(dev); + int ret; + + netif_stop_queue(dev); + netif_carrier_off(dev); + rtase_hw_reset(dev); + + /* let's wait a bit while any (async) irq lands on */ + rtase_wait_for_quiescence(dev); + rtase_tx_clear(tp); + rtase_rx_clear(tp); + + ret = rtase_init_ring(dev); + if (ret) { + netdev_err(dev, "unable to init ring\n"); + rtase_free_desc(tp); + return; + } + + rtase_hw_config(dev); + /* always link, so start to transmit & receive */ + rtase_hw_start(dev); + + netif_carrier_on(dev); + netif_wake_queue(dev); +} + +static void rtase_dump_tally_counter(const struct rtase_private *tp) +{ + dma_addr_t paddr = tp->tally_paddr; + u32 cmd = lower_32_bits(paddr); + u32 val; + int err; + + rtase_w32(tp, RTASE_DTCCR4, upper_32_bits(paddr)); + rtase_w32(tp, RTASE_DTCCR0, cmd); + rtase_w32(tp, RTASE_DTCCR0, cmd | COUNTER_DUMP); + + err = read_poll_timeout(rtase_r32, val, !(val & COUNTER_DUMP), 10, 250, + false, tp, RTASE_DTCCR0); + + if (err == -ETIMEDOUT) + netdev_err(tp->dev, "error occurred in dump tally counter\n"); +} + +static void rtase_dump_state(const struct net_device *dev) +{ + const struct rtase_private *tp = netdev_priv(dev); + int max_reg_size = RTASE_PCI_REGS_SIZE; + const struct rtase_counters *counters; + const struct rtase_ring *ring; + u32 dword_rd; + int n = 0; + + ring = &tp->tx_ring[0]; + netdev_err(dev, "Tx descriptor info:\n"); + netdev_err(dev, "Tx curIdx = 0x%x\n", ring->cur_idx); + netdev_err(dev, "Tx dirtyIdx = 0x%x\n", ring->dirty_idx); + netdev_err(dev, "Tx phyAddr = %pad\n", &ring->phy_addr); + + ring = &tp->rx_ring[0]; + netdev_err(dev, "Rx descriptor info:\n"); + netdev_err(dev, "Rx curIdx = 0x%x\n", ring->cur_idx); + netdev_err(dev, "Rx dirtyIdx = 0x%x\n", ring->dirty_idx); + netdev_err(dev, "Rx phyAddr = %pad\n", &ring->phy_addr); + + netdev_err(dev, "Device Registers:\n"); + netdev_err(dev, "Chip Command = 0x%02x\n", rtase_r8(tp, RTASE_CHIP_CMD)); + netdev_err(dev, "IMR = %08x\n", rtase_r32(tp, RTASE_IMR0)); + netdev_err(dev, "ISR = %08x\n", rtase_r32(tp, RTASE_ISR0)); + netdev_err(dev, "Boot Ctrl Reg(0xE004) = %04x\n", + rtase_r16(tp, RTASE_BOOT_CTL)); + netdev_err(dev, "EPHY ISR(0xE014) = %04x\n", + rtase_r16(tp, RTASE_EPHY_ISR)); + netdev_err(dev, "EPHY IMR(0xE016) = %04x\n", + rtase_r16(tp, RTASE_EPHY_IMR)); + netdev_err(dev, "CLKSW SET REG(0xE018) = %04x\n", + rtase_r16(tp, RTASE_CLKSW_SET)); + + netdev_err(dev, "Dump PCI Registers:\n"); + + while (n < max_reg_size) { + if ((n % RTASE_DWORD_MOD) == 0) + netdev_err(tp->dev, "0x%03x:\n", n); + + pci_read_config_dword(tp->pdev, n, &dword_rd); + netdev_err(tp->dev, "%08x\n", dword_rd); + n += 4; + } + + netdev_err(dev, "Dump tally counter:\n"); + counters = tp->tally_vaddr; + rtase_dump_tally_counter(tp); + + netdev_err(dev, "tx_packets %lld\n", + le64_to_cpu(counters->tx_packets)); + netdev_err(dev, "rx_packets %lld\n", + le64_to_cpu(counters->rx_packets)); + netdev_err(dev, "tx_errors %lld\n", + le64_to_cpu(counters->tx_errors)); + netdev_err(dev, "rx_errors %d\n", + le32_to_cpu(counters->rx_errors)); + netdev_err(dev, "rx_missed %d\n", + le16_to_cpu(counters->rx_missed)); + netdev_err(dev, "align_errors %d\n", + le16_to_cpu(counters->align_errors)); + netdev_err(dev, "tx_one_collision %d\n", + le32_to_cpu(counters->tx_one_collision)); + netdev_err(dev, "tx_multi_collision %d\n", + le32_to_cpu(counters->tx_multi_collision)); + netdev_err(dev, "rx_unicast %lld\n", + le64_to_cpu(counters->rx_unicast)); + netdev_err(dev, "rx_broadcast %lld\n", + le64_to_cpu(counters->rx_broadcast)); + netdev_err(dev, "rx_multicast %d\n", + le32_to_cpu(counters->rx_multicast)); + netdev_err(dev, "tx_aborted %d\n", + le16_to_cpu(counters->tx_aborted)); + netdev_err(dev, "tx_underun %d\n", + le16_to_cpu(counters->tx_underun)); +} + +static void rtase_tx_timeout(struct net_device *dev, unsigned int txqueue) +{ + rtase_dump_state(dev); + rtase_sw_reset(dev); +} + +static void rtase_get_stats64(struct net_device *dev, + struct rtnl_link_stats64 *stats) +{ + const struct rtase_private *tp = netdev_priv(dev); + const struct rtase_counters *counters = tp->tally_vaddr; + + if (!counters) + return; + + netdev_stats_to_stats64(stats, &dev->stats); + dev_fetch_sw_netstats(stats, dev->tstats); + + /* fetch additional counter values missing in stats collected by driver + * from tally counter + */ + rtase_dump_tally_counter(tp); + + stats->tx_errors = le64_to_cpu(counters->tx_errors); + stats->collisions = le32_to_cpu(counters->tx_multi_collision); + stats->tx_aborted_errors = le16_to_cpu(counters->tx_aborted); + stats->rx_missed_errors = le16_to_cpu(counters->rx_missed); +} + #ifdef CONFIG_NET_POLL_CONTROLLER /* Polling 'interrupt' - used by things like netconsole to send skbs * without having to re-enable interrupts. It's not called while @@ -1468,13 +1670,48 @@ static void rtase_netpoll(struct net_device *dev) } #endif +static netdev_features_t rtase_fix_features(struct net_device *dev, + netdev_features_t features) +{ + netdev_features_t features_fix = features; + + if (dev->mtu > MSS_MAX) + features_fix &= ~NETIF_F_ALL_TSO; + + if (dev->mtu > ETH_DATA_LEN) + features_fix &= ~NETIF_F_ALL_TSO; + + return features_fix; +} + +static int rtase_set_features(struct net_device *dev, + netdev_features_t features) +{ + netdev_features_t features_set = features; + + features_set &= NETIF_F_RXALL | NETIF_F_RXCSUM | + NETIF_F_HW_VLAN_CTAG_RX; + + if (features_set ^ dev->features) + rtase_hw_set_features(dev, features_set); + + return 0; +} + static const struct net_device_ops rtase_netdev_ops = { .ndo_open = rtase_open, .ndo_stop = rtase_close, .ndo_start_xmit = rtase_start_xmit, + .ndo_set_rx_mode = rtase_set_rx_mode, + .ndo_set_mac_address = rtase_set_mac_address, + .ndo_change_mtu = rtase_change_mtu, + .ndo_tx_timeout = rtase_tx_timeout, + .ndo_get_stats64 = rtase_get_stats64, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = rtase_netpoll, #endif + .ndo_fix_features = rtase_fix_features, + .ndo_set_features = rtase_set_features, }; static void rtase_get_mac_address(struct net_device *dev) -- 2.34.1
Powered by blists - more mailing lists