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Red Hat Bugzilla – Attachment 891643 Details for
Bug 1067126
Virt-manager doesn't configure bridge for VM
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[patch]
Test Patch 4
Test_Patch_4.patch (text/plain), 10.62 KB, created by
Dave Ertman
on 2014-05-01 22:00:52 UTC
(
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Description:
Test Patch 4
Filename:
MIME Type:
Creator:
Dave Ertman
Created:
2014-05-01 22:00:52 UTC
Size:
10.62 KB
patch
obsolete
>From: Dave Ertman <davidx.m.ertman@intel.com> >Subject: [PATCH] e1000e: Failure to write SHRA turns on PROMISC mode > >Previously, the check to turn on promiscuous mode only took into account >the total number of SHared Receive Address (SHRA) registers and if we were >requesting one within that range. It is possible that the Management >Engine might have locked a number of SHRA and not allowed a new address >to be written to the requested register. > >Add a function to determine the number of unlocked SHRA registers. Then >determine if the number of registers available is sufficient for our needs, >if not then return -ENOMEM so that UNICAST PROMISC mode is activated. > >Since the method by which ME claims SHRA registers is non-deterministic, >also add a return value to the function attempting to write an address >to a SHRA, and return a -ENOMEM error if the write fails. The error >will be passed up the function chain and allow the driver to also set >UNICAST PROMISC when this happens. > >Cc: Vlad Yasevich <vyasevic@redhat.com> >Signed-off-by: Dave Ertman <davidx.m.ertman@intel.com> >--- >diff --git a/drivers/net/ethernet/intel/e1000e/80003es2lan.c b/drivers/net/ethernet/intel/e1000e/80003es2lan.c >index a5f6b11..08f22f3 100644 >--- a/drivers/net/ethernet/intel/e1000e/80003es2lan.c >+++ b/drivers/net/ethernet/intel/e1000e/80003es2lan.c >@@ -1365,6 +1365,7 @@ static const struct e1000_mac_operations es2_mac_ops = { > .setup_led = e1000e_setup_led_generic, > .config_collision_dist = e1000e_config_collision_dist_generic, > .rar_set = e1000e_rar_set_generic, >+ .rar_get_count = e1000e_rar_get_count_generic, > }; > > static const struct e1000_phy_operations es2_phy_ops = { >diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c >index e0aa7f1..218481e 100644 >--- a/drivers/net/ethernet/intel/e1000e/82571.c >+++ b/drivers/net/ethernet/intel/e1000e/82571.c >@@ -1896,6 +1896,7 @@ static const struct e1000_mac_operations e82571_mac_ops = { > .config_collision_dist = e1000e_config_collision_dist_generic, > .read_mac_addr = e1000_read_mac_addr_82571, > .rar_set = e1000e_rar_set_generic, >+ .rar_get_count = e1000e_rar_get_count_generic, > }; > > static const struct e1000_phy_operations e82_phy_ops_igp = { >diff --git a/drivers/net/ethernet/intel/e1000e/hw.h b/drivers/net/ethernet/intel/e1000e/hw.h >index 6b3de5f..72f5475 100644 >--- a/drivers/net/ethernet/intel/e1000e/hw.h >+++ b/drivers/net/ethernet/intel/e1000e/hw.h >@@ -469,8 +469,9 @@ struct e1000_mac_operations { > s32 (*setup_led)(struct e1000_hw *); > void (*write_vfta)(struct e1000_hw *, u32, u32); > void (*config_collision_dist)(struct e1000_hw *); >- void (*rar_set)(struct e1000_hw *, u8 *, u32); >+ int (*rar_set)(struct e1000_hw *, u8 *, u32); > s32 (*read_mac_addr)(struct e1000_hw *); >+ u32 (*rar_get_count)(struct e1000_hw *); > }; > > /* When to use various PHY register access functions: >diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c >index 5f55395..b299f86 100644 >--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c >+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c >@@ -139,8 +139,9 @@ static s32 e1000_k1_gig_workaround_hv(struct e1000_hw *hw, bool link); > static s32 e1000_set_mdio_slow_mode_hv(struct e1000_hw *hw); > static bool e1000_check_mng_mode_ich8lan(struct e1000_hw *hw); > static bool e1000_check_mng_mode_pchlan(struct e1000_hw *hw); >-static void e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index); >-static void e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index); >+static int e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index); >+static int e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index); >+static u32 e1000_rar_get_count_pch_lpt(struct e1000_hw *hw); > static s32 e1000_k1_workaround_lv(struct e1000_hw *hw); > static void e1000_gate_hw_phy_config_ich8lan(struct e1000_hw *hw, bool gate); > static s32 e1000_disable_ulp_lpt_lp(struct e1000_hw *hw, bool force); >@@ -704,6 +705,7 @@ static s32 e1000_init_mac_params_ich8lan(struct e1000_hw *hw) > mac->ops.rar_set = e1000_rar_set_pch_lpt; > mac->ops.setup_physical_interface = > e1000_setup_copper_link_pch_lpt; >+ mac->ops.rar_get_count = e1000_rar_get_count_pch_lpt; > } > > /* Enable PCS Lock-loss workaround for ICH8 */ >@@ -1668,7 +1670,7 @@ static bool e1000_check_mng_mode_pchlan(struct e1000_hw *hw) > * contain the MAC address but RAR[1-6] are reserved for manageability (ME). > * Use SHRA[0-3] in place of those reserved for ME. > **/ >-static void e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index) >+static int e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index) > { > u32 rar_low, rar_high; > >@@ -1690,7 +1692,7 @@ static void e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index) > e1e_flush(); > ew32(RAH(index), rar_high); > e1e_flush(); >- return; >+ return 0; > } > > /* RAR[1-6] are owned by manageability. Skip those and program the >@@ -1713,14 +1715,53 @@ static void e1000_rar_set_pch2lan(struct e1000_hw *hw, u8 *addr, u32 index) > /* verify the register updates */ > if ((er32(SHRAL(index - 1)) == rar_low) && > (er32(SHRAH(index - 1)) == rar_high)) >- return; >+ return 0; > > e_dbg("SHRA[%d] might be locked by ME - FWSM=0x%8.8x\n", > (index - 1), er32(FWSM)); >+ return -ENOMEM; > } > > out: > e_dbg("Failed to write receive address at index %d\n", index); >+ return -ENOMEM; >+} >+ >+/** >+ * e1000_rar_get_count_pch_lpt - Get the number of available SHRA >+ * @hw: pointer to the HW structure >+ * >+ * Get the number of available recieve registers that the Host can >+ * programm. SHRA[0-10] are the shared receive address registers >+ * that are shared between the Host and manageability engine (ME). >+ * ME can reserve any number of addresses and the host needs to be >+ * able to tell how many available registers it has access to so it >+ * can correctly determine if it can program them or turn on >+ * promiscuous mode. >+ **/ >+static u32 e1000_rar_get_count_pch_lpt(struct e1000_hw *hw) >+{ >+ u32 wlock_mac; >+ u32 num_entries; >+ >+ wlock_mac = er32(FWSM) & E1000_FWSM_WLOCK_MAC_MASK; >+ wlock_mac >>= E1000_FWSM_WLOCK_MAC_SHIFT; >+ >+ switch (wlock_mac) { >+ case 0: >+ /* All entries are availble */ >+ num_entries = hw->mac.rar_entry_count; >+ break; >+ case 1: >+ /* All entries are full */ >+ num_entries = 1; >+ break; >+ default: >+ num_entries = wlock_mac + 1; >+ break; >+ } >+ >+ return num_entries; > } > > /** >@@ -1734,7 +1775,7 @@ out: > * contain the MAC address. SHRA[0-10] are the shared receive address > * registers that are shared between the Host and manageability engine (ME). > **/ >-static void e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index) >+static int e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index) > { > u32 rar_low, rar_high; > u32 wlock_mac; >@@ -1756,7 +1797,7 @@ static void e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index) > e1e_flush(); > ew32(RAH(index), rar_high); > e1e_flush(); >- return; >+ return 0; > } > > /* The manageability engine (ME) can lock certain SHRAR registers that >@@ -1788,12 +1829,13 @@ static void e1000_rar_set_pch_lpt(struct e1000_hw *hw, u8 *addr, u32 index) > /* verify the register updates */ > if ((er32(SHRAL_PCH_LPT(index - 1)) == rar_low) && > (er32(SHRAH_PCH_LPT(index - 1)) == rar_high)) >- return; >+ return 0; > } > } > > out: > e_dbg("Failed to write receive address at index %d\n", index); >+ return -ENOMEM; > } > > /** >@@ -4977,6 +5019,7 @@ static const struct e1000_mac_operations ich8_mac_ops = { > /* id_led_init dependent on mac type */ > .config_collision_dist = e1000e_config_collision_dist_generic, > .rar_set = e1000e_rar_set_generic, >+ .rar_get_count = e1000e_rar_get_count_generic, > }; > > static const struct e1000_phy_operations ich8_phy_ops = { >diff --git a/drivers/net/ethernet/intel/e1000e/mac.c b/drivers/net/ethernet/intel/e1000e/mac.c >index baa0a46..8c386f3a 100644 >--- a/drivers/net/ethernet/intel/e1000e/mac.c >+++ b/drivers/net/ethernet/intel/e1000e/mac.c >@@ -211,6 +211,11 @@ s32 e1000_check_alt_mac_addr_generic(struct e1000_hw *hw) > return 0; > } > >+u32 e1000e_rar_get_count_generic(struct e1000_hw *hw) >+{ >+ return hw->mac.rar_entry_count; >+} >+ > /** > * e1000e_rar_set_generic - Set receive address register > * @hw: pointer to the HW structure >@@ -220,7 +225,7 @@ s32 e1000_check_alt_mac_addr_generic(struct e1000_hw *hw) > * Sets the receive address array register at index to the address passed > * in by addr. > **/ >-void e1000e_rar_set_generic(struct e1000_hw *hw, u8 *addr, u32 index) >+int e1000e_rar_set_generic(struct e1000_hw *hw, u8 *addr, u32 index) > { > u32 rar_low, rar_high; > >@@ -244,6 +249,8 @@ void e1000e_rar_set_generic(struct e1000_hw *hw, u8 *addr, u32 index) > e1e_flush(); > ew32(RAH(index), rar_high); > e1e_flush(); >+ >+ return 0; > } > > /** >diff --git a/drivers/net/ethernet/intel/e1000e/mac.h b/drivers/net/ethernet/intel/e1000e/mac.h >index 4e81c28..0513d90 100644 >--- a/drivers/net/ethernet/intel/e1000e/mac.h >+++ b/drivers/net/ethernet/intel/e1000e/mac.h >@@ -61,7 +61,8 @@ void e1000e_update_adaptive(struct e1000_hw *hw); > void e1000_write_vfta_generic(struct e1000_hw *hw, u32 offset, u32 value); > > void e1000_set_lan_id_multi_port_pcie(struct e1000_hw *hw); >-void e1000e_rar_set_generic(struct e1000_hw *hw, u8 *addr, u32 index); >+u32 e1000e_rar_get_count_generic(struct e1000_hw *hw); >+int e1000e_rar_set_generic(struct e1000_hw *hw, u8 *addr, u32 index); > void e1000e_config_collision_dist_generic(struct e1000_hw *hw); > > #endif >diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c >index e4207ef..6084e6b 100644 >--- a/drivers/net/ethernet/intel/e1000e/netdev.c >+++ b/drivers/net/ethernet/intel/e1000e/netdev.c >@@ -3311,9 +3311,11 @@ static int e1000e_write_uc_addr_list(struct net_device *netdev) > { > struct e1000_adapter *adapter = netdev_priv(netdev); > struct e1000_hw *hw = &adapter->hw; >- unsigned int rar_entries = hw->mac.rar_entry_count; >+ unsigned int rar_entries; > int count = 0; > >+ rar_entries = hw->mac.ops.rar_get_count(hw); >+ > /* save a rar entry for our hardware address */ > rar_entries--; > >@@ -3332,9 +3334,13 @@ static int e1000e_write_uc_addr_list(struct net_device *netdev) > * combining > */ > netdev_for_each_uc_addr(ha, netdev) { >+ int rval; >+ > if (!rar_entries) > break; >- hw->mac.ops.rar_set(hw, ha->addr, rar_entries--); >+ rval = hw->mac.ops.rar_set(hw, ha->addr, rar_entries--); >+ if (rval < 0) >+ return -ENOMEM; > count++; > } > }
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bug 1067126
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890558
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891627
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