From 884476be065e23bb8e5abda3aad9ba04c17341c3 Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Wed, 22 Jun 2016 08:54:55 -0400 Subject: be2net: Fix broadcast echoes from EVB in BE3 On SR-IOV profiles, when the user connects a Linux Bridge or OVS to a BE3 vport, they suffer the "broadcast/multicast echo" problem. BE3 EVB echoes broadcast and multicast packets back to PF's vport confusing the Linux bridge. BE3 relies on the src-mac addr being programmed on the interface to avoid sending back an echo of a broadcast or multicast packet on a vPort. When a Linux bridge is connected to a BE3, the mac-addr of the VM behind the bridge doesn't get configured on the vPort and so echo cancellation doesn't work. This patch worksaround this problem by disabling the EVB initially and re-enabling it *only* when SR-IOV is enabled by the user. For the driver fix to work, the BE3 FW version must be >= 11.1.84.0. Signed-off-by: Somnath Kotur Signed-off-by: Sathya Perla Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be_cmds.c | 11 ++++++++++- drivers/net/ethernet/emulex/benet/be_main.c | 23 +++++++++++++++++++++++ 2 files changed, 33 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet/emulex') diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c index 29aeb91cba49..a98b6ab33ed5 100644 --- a/drivers/net/ethernet/emulex/benet/be_cmds.c +++ b/drivers/net/ethernet/emulex/benet/be_cmds.c @@ -87,6 +87,11 @@ static struct be_cmd_priv_map cmd_priv_map[] = { CMD_SUBSYSTEM_LOWLEVEL, BE_PRIV_DEVCFG | BE_PRIV_DEVSEC }, + { + OPCODE_COMMON_SET_HSW_CONFIG, + CMD_SUBSYSTEM_COMMON, + BE_PRIV_DEVCFG | BE_PRIV_VHADM + }, }; static bool be_cmd_allowed(struct be_adapter *adapter, u8 opcode, u8 subsystem) @@ -3850,6 +3855,10 @@ int be_cmd_set_hsw_config(struct be_adapter *adapter, u16 pvid, void *ctxt; int status; + if (!be_cmd_allowed(adapter, OPCODE_COMMON_SET_HSW_CONFIG, + CMD_SUBSYSTEM_COMMON)) + return -EPERM; + spin_lock_bh(&adapter->mcc_lock); wrb = wrb_from_mccq(adapter); @@ -3871,7 +3880,7 @@ int be_cmd_set_hsw_config(struct be_adapter *adapter, u16 pvid, AMAP_SET_BITS(struct amap_set_hsw_context, pvid_valid, ctxt, 1); AMAP_SET_BITS(struct amap_set_hsw_context, pvid, ctxt, pvid); } - if (!BEx_chip(adapter) && hsw_mode) { + if (hsw_mode) { AMAP_SET_BITS(struct amap_set_hsw_context, interface_id, ctxt, adapter->hba_port_num); AMAP_SET_BITS(struct amap_set_hsw_context, pport, ctxt, 1); diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index a654c12e924b..f11a19b75c99 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -3729,6 +3729,11 @@ static void be_vf_clear(struct be_adapter *adapter) be_cmd_if_destroy(adapter, vf_cfg->if_handle, vf + 1); } + + if (BE3_chip(adapter)) + be_cmd_set_hsw_config(adapter, 0, 0, + adapter->if_handle, + PORT_FWD_TYPE_PASSTHRU, 0); done: kfree(adapter->vf_cfg); adapter->num_vfs = 0; @@ -4019,6 +4024,15 @@ static int be_vf_setup(struct be_adapter *adapter) } } + if (BE3_chip(adapter)) { + /* On BE3, enable VEB only when SRIOV is enabled */ + status = be_cmd_set_hsw_config(adapter, 0, 0, + adapter->if_handle, + PORT_FWD_TYPE_VEB, 0); + if (status) + goto err; + } + adapter->flags |= BE_FLAGS_SRIOV_ENABLED; return 0; err: @@ -4564,6 +4578,15 @@ static int be_setup(struct be_adapter *adapter) be_cmd_set_logical_link_config(adapter, IFLA_VF_LINK_STATE_AUTO, 0); + /* BE3 EVB echoes broadcast/multicast packets back to PF's vport + * confusing a linux bridge or OVS that it might be connected to. + * Set the EVB to PASSTHRU mode which effectively disables the EVB + * when SRIOV is not enabled. + */ + if (BE3_chip(adapter)) + be_cmd_set_hsw_config(adapter, 0, 0, adapter->if_handle, + PORT_FWD_TYPE_PASSTHRU, 0); + if (adapter->num_vfs) be_vf_setup(adapter); -- cgit v1.2.3