diff options
| -rw-r--r-- | drivers/net/igb/e1000_82575.c | 5 | ||||
| -rw-r--r-- | drivers/net/igb/e1000_hw.h | 1 | ||||
| -rw-r--r-- | drivers/net/igb/e1000_regs.h | 1 | ||||
| -rw-r--r-- | drivers/net/igb/igb_main.c | 203 |
4 files changed, 163 insertions, 47 deletions
diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c index 78971815bbce..b8a88a8b393f 100644 --- a/drivers/net/igb/e1000_82575.c +++ b/drivers/net/igb/e1000_82575.c @@ -875,6 +875,11 @@ static s32 igb_init_hw_82575(struct e1000_hw *hw) for (i = 0; i < mac->mta_reg_count; i++) array_wr32(E1000_MTA, i, 0); + /* Zero out the Unicast HASH table */ + hw_dbg("Zeroing the UTA\n"); + for (i = 0; i < mac->uta_reg_count; i++) + array_wr32(E1000_UTA, i, 0); + /* Setup link and flow control */ ret_val = igb_setup_link(hw); diff --git a/drivers/net/igb/e1000_hw.h b/drivers/net/igb/e1000_hw.h index b1e0c0613a94..7b7898bc9348 100644 --- a/drivers/net/igb/e1000_hw.h +++ b/drivers/net/igb/e1000_hw.h @@ -340,6 +340,7 @@ struct e1000_mac_info { u16 ifs_ratio; u16 ifs_step_size; u16 mta_reg_count; + u16 uta_reg_count; /* Maximum size of the MTA register table in all supported adapters */ #define MAX_MTA_REG 128 diff --git a/drivers/net/igb/e1000_regs.h b/drivers/net/igb/e1000_regs.h index 345d1442d6d6..76c338929f68 100644 --- a/drivers/net/igb/e1000_regs.h +++ b/drivers/net/igb/e1000_regs.h @@ -331,6 +331,7 @@ enum { #define E1000_QDE 0x02408 /* Queue Drop Enable - RW */ #define E1000_DTXSWC 0x03500 /* DMA Tx Switch Control - RW */ #define E1000_RPLOLR 0x05AF0 /* Replication Offload - RW */ +#define E1000_UTA 0x0A000 /* Unicast Table Array - RW */ #define E1000_IOVTCL 0x05BBC /* IOV Control Register */ /* These act per VF so an array friendly macro is used */ #define E1000_P2VMAILBOX(_n) (0x00C00 + (4 * (_n))) diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index bb0aacd9961e..fdbe33228d62 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -106,6 +106,7 @@ static netdev_tx_t igb_xmit_frame_adv(struct sk_buff *skb, static struct net_device_stats *igb_get_stats(struct net_device *); static int igb_change_mtu(struct net_device *, int); static int igb_set_mac(struct net_device *, void *); +static void igb_set_uta(struct igb_adapter *adapter); static irqreturn_t igb_intr(int irq, void *); static irqreturn_t igb_intr_msi(int irq, void *); static irqreturn_t igb_msix_other(int irq, void *); @@ -141,7 +142,6 @@ static inline void igb_set_vmolr(struct e1000_hw *hw, int vfn) reg_data = rd32(E1000_VMOLR(vfn)); reg_data |= E1000_VMOLR_BAM | /* Accept broadcast */ - E1000_VMOLR_ROPE | /* Accept packets matched in UTA */ E1000_VMOLR_ROMPE | /* Accept packets matched in MTA */ E1000_VMOLR_AUPE | /* Accept untagged packets */ E1000_VMOLR_STRVLAN; /* Strip vlan tags */ @@ -2286,6 +2286,9 @@ static void igb_configure_rx(struct igb_adapter *adapter) /* Set the default pool for the PF's first queue */ igb_configure_vt_default_pool(adapter); + /* set UTA to appropriate mode */ + igb_set_uta(adapter); + /* set the correct pool for the PF default MAC address in entry 0 */ igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0, adapter->vfs_allocated_count); @@ -2521,44 +2524,72 @@ static int igb_set_mac(struct net_device *netdev, void *p) } /** - * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set + * igb_write_mc_addr_list - write multicast addresses to MTA * @netdev: network interface device structure * - * The set_rx_mode entry point is called whenever the unicast or multicast - * address lists or the network interface flags are updated. This routine is - * responsible for configuring the hardware for proper unicast, multicast, - * promiscuous mode, and all-multi behavior. + * 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 void igb_set_rx_mode(struct net_device *netdev) +static int igb_write_mc_addr_list(struct net_device *netdev) { struct igb_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; - unsigned int rar_entries = hw->mac.rar_entry_count - - (adapter->vfs_allocated_count + 1); struct dev_mc_list *mc_ptr = netdev->mc_list; - u8 *mta_list = NULL; - u32 rctl; + u8 *mta_list; + u32 vmolr = 0; int i; - /* Check for Promiscuous and All Multicast modes */ - rctl = rd32(E1000_RCTL); + if (!netdev->mc_count) { + /* nothing to program, so clear mc list */ + igb_update_mc_addr_list(hw, NULL, 0); + igb_restore_vf_multicasts(adapter); + return 0; + } - if (netdev->flags & IFF_PROMISC) { - rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); - rctl &= ~E1000_RCTL_VFE; - } else { - if (netdev->flags & IFF_ALLMULTI) - rctl |= E1000_RCTL_MPE; - else - rctl &= ~E1000_RCTL_MPE; + mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC); + if (!mta_list) + return -ENOMEM; - if (netdev->uc.count > rar_entries) - rctl |= E1000_RCTL_UPE; - else - rctl &= ~E1000_RCTL_UPE; - rctl |= E1000_RCTL_VFE; + /* set vmolr receive overflow multicast bit */ + vmolr |= E1000_VMOLR_ROMPE; + + /* The shared function expects a packed array of only addresses. */ + mc_ptr = netdev->mc_list; + + for (i = 0; i < netdev->mc_count; i++) { + if (!mc_ptr) + break; + memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN); + mc_ptr = mc_ptr->next; } - wr32(E1000_RCTL, rctl); + igb_update_mc_addr_list(hw, mta_list, i); + kfree(mta_list); + + return netdev->mc_count; +} + +/** + * igb_write_uc_addr_list - write unicast addresses to RAR table + * @netdev: network interface device structure + * + * Writes unicast address list to the RAR table. + * Returns: -ENOMEM on failure/insufficient address space + * 0 on no addresses written + * X on writing X addresses to the RAR table + **/ +static int igb_write_uc_addr_list(struct net_device *netdev) +{ + struct igb_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + unsigned int vfn = adapter->vfs_allocated_count; + unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1); + int count = 0; + + /* return ENOMEM indicating insufficient memory for addresses */ + if (netdev->uc.count > rar_entries) + return -ENOMEM; if (netdev->uc.count && rar_entries) { struct netdev_hw_addr *ha; @@ -2567,7 +2598,8 @@ static void igb_set_rx_mode(struct net_device *netdev) break; igb_rar_set_qsel(adapter, ha->addr, rar_entries--, - adapter->vfs_allocated_count); + vfn); + count++; } } /* write the addresses in reverse order to avoid write combining */ @@ -2577,29 +2609,79 @@ static void igb_set_rx_mode(struct net_device *netdev) } wrfl(); - if (!netdev->mc_count) { - /* nothing to program, so clear mc list */ - igb_update_mc_addr_list(hw, NULL, 0); - igb_restore_vf_multicasts(adapter); - return; + return count; +} + +/** + * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set + * @netdev: network interface device structure + * + * The set_rx_mode entry point is called whenever the unicast or multicast + * address lists or the network interface flags are updated. This routine is + * responsible for configuring the hardware for proper unicast, multicast, + * promiscuous mode, and all-multi behavior. + **/ +static void igb_set_rx_mode(struct net_device *netdev) +{ + struct igb_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + unsigned int vfn = adapter->vfs_allocated_count; + u32 rctl, vmolr = 0; + int count; + + /* Check for Promiscuous and All Multicast modes */ + rctl = rd32(E1000_RCTL); + + /* clear the effected bits */ + rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_VFE); + + if (netdev->flags & IFF_PROMISC) { + rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); + vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME); + } else { + if (netdev->flags & IFF_ALLMULTI) { + rctl |= E1000_RCTL_MPE; + vmolr |= E1000_VMOLR_MPME; + } else { + /* + * Write addresses to the MTA, if the attempt fails + * then we should just turn on promiscous mode so + * that we can at least receive multicast traffic + */ + count = igb_write_mc_addr_list(netdev); + if (count < 0) { + rctl |= E1000_RCTL_MPE; + vmolr |= E1000_VMOLR_MPME; + } else if (count) { + vmolr |= E1000_VMOLR_ROMPE; + } + } + /* + * Write addresses to available RAR registers, if there is not + * sufficient space to store all the addresses then enable + * unicast promiscous mode + */ + count = igb_write_uc_addr_list(netdev); + if (count < 0) { + rctl |= E1000_RCTL_UPE; + vmolr |= E1000_VMOLR_ROPE; + } + rctl |= E1000_RCTL_VFE; } + wr32(E1000_RCTL, rctl); - mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC); - if (!mta_list) { - dev_err(&adapter->pdev->dev, - "failed to allocate multicast filter list\n"); + /* + * In order to support SR-IOV and eventually VMDq it is necessary to set + * the VMOLR to enable the appropriate modes. Without this workaround + * we will have issues with VLAN tag stripping not being done for frames + * that are only arriving because we are the default pool + */ + if (hw->mac.type < e1000_82576) return; - } - /* The shared function expects a packed array of only addresses. */ - for (i = 0; i < netdev->mc_count; i++) { - if (!mc_ptr) - break; - memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN); - mc_ptr = mc_ptr->next; - } - igb_update_mc_addr_list(hw, mta_list, i); - kfree(mta_list); + vmolr |= rd32(E1000_VMOLR(vfn)) & + ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE); + wr32(E1000_VMOLR(vfn), vmolr); igb_restore_vf_multicasts(adapter); } @@ -4264,6 +4346,33 @@ static int igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) } /** + * igb_set_uta - Set unicast filter table address + * @adapter: board private structure + * + * The unicast table address is a register array of 32-bit registers. + * The table is meant to be used in a way similar to how the MTA is used + * however due to certain limitations in the hardware it is necessary to + * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscous + * enable bit to allow vlan tag stripping when promiscous mode is enabled + **/ +static void igb_set_uta(struct igb_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + int i; + + /* The UTA table only exists on 82576 hardware and newer */ + if (hw->mac.type < e1000_82576) + return; + + /* we only need to do this if VMDq is enabled */ + if (!adapter->vfs_allocated_count) + return; + + for (i = 0; i < hw->mac.uta_reg_count; i++) + array_wr32(E1000_UTA, i, ~0); +} + +/** * igb_intr_msi - Interrupt Handler * @irq: interrupt number * @data: pointer to a network interface device structure |