From 8363a4d48c02be00c80671bb0f8877cbb00f87e2 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Tue, 3 Apr 2018 17:16:35 -0400 Subject: [PATCH] ixgbe/fm10k: Only support macvlan offload for types that support destination filtering Both the ixgbe and fm10k drivers support destination filtering. Instead of adding a ton of complexity to support either source or passthru mode we can instead just avoid offloading them for now. Doing this we avoid leaking packets into interfaces that aren't meant to receive them. Signed-off-by: Alexander Duyck Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/fm10k/fm10k_netdev.c | 8 ++++++++ drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 7 +++++++ 2 files changed, 15 insertions(+) diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c index ee645bacfe93f..26e7497663378 100644 --- a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c @@ -22,6 +22,7 @@ #include "fm10k.h" #include #include +#include /** * fm10k_setup_tx_resources - allocate Tx resources (Descriptors) @@ -1449,6 +1450,13 @@ static void *fm10k_dfwd_add_station(struct net_device *dev, int size = 0, i; u16 glort; + /* The hardware supported by fm10k only filters on the destination MAC + * address. In order to avoid issues we only support offloading modes + * where the hardware can actually provide the functionality. + */ + if (!macvlan_supports_dest_filter(sdev)) + return ERR_PTR(-EMEDIUMTYPE); + /* allocate l2 accel structure if it is not available */ if (!l2_accel) { /* verify there is enough free GLORTs to support l2_accel */ diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 2c648214148e6..76f54771fdb2e 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -9760,6 +9760,13 @@ static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev) unsigned int limit; int pool, err; + /* The hardware supported by ixgbe only filters on the destination MAC + * address. In order to avoid issues we only support offloading modes + * where the hardware can actually provide the functionality. + */ + if (!macvlan_supports_dest_filter(vdev)) + return ERR_PTR(-EMEDIUMTYPE); + /* Hardware has a limited number of available pools. Each VF, and the * PF require a pool. Check to ensure we don't attempt to use more * then the available number of pools. -- 2.39.5