I'm kind of a spammer lately :), however it doesn't seem hardware filtering is working here on Intel 82599.
I'm using the pfring daq, with 2-tuple cluster_mode. The driver is loaded with RSS=0,0,0,0 FdirMode=2,2,2,2 FdirPballoc=3,3,3,3 [38621.801241] ixgbe: Receive-Side Scaling (RSS) set to 0 [38621.801245] ixgbe: Flow Director filtering mode set to 2 [38621.801248] ixgbe: 0000:06:00.0: ixgbe_check_options: Flow Director perfect filtering enabled [38621.801251] ixgbe: Flow Director packet buffer allocation set to 3 [38621.801254] ixgbe: 0000:06:00.0: ixgbe_check_options: Flow Director will be allocated 256kB of packet buffer [38621.801257] ixgbe: 0000:06:00.0: ixgbe_check_options: FCoE Offload feature enabled [38621.801303] ixgbe 0000:06:00.0: (unregistered net_device): FCoE offload feature is not available. Disabling FCoE offload feature [38621.825602] ixgbe 0000:06:00.0: irq 80 for MSI/MSI-X [38621.825609] ixgbe 0000:06:00.0: irq 81 for MSI/MSI-X [38621.827133] ixgbe 0000:06:00.0: (PCI Express:5.0GT/s:Width x8) xxxxxxxxxxxxxxxxxx [38621.827466] ixgbe 0000:06:00.0: eth2: MAC: 2, PHY: 2, PBA No: G21371-003 [38621.827469] ixgbe 0000:06:00.0: eth2: Enabled Features: RxQ: 1 TxQ: 1 FdirPerfect RSC [38621.827548] ixgbe 0000:06:00.0: eth2: Intel(R) 10 Gigabit Network Connection [38621.827584] ixgbe 0000:06:00.1: PCI INT A -> GSI 38 (level, low) -> IRQ 38 [38621.827596] ixgbe 0000:06:00.1: setting latency timer to 64 [38622.216534] ixgbe: Receive-Side Scaling (RSS) set to 0 [38622.216539] ixgbe: Flow Director filtering mode set to 2 [38622.216542] ixgbe: 0000:06:00.1: ixgbe_check_options: Flow Director perfect filtering enabled [38622.216545] ixgbe: Flow Director packet buffer allocation set to 3 [38622.216548] ixgbe: 0000:06:00.1: ixgbe_check_options: Flow Director will be allocated 256kB of packet buffer [38622.216551] ixgbe: 0000:06:00.1: ixgbe_check_options: FCoE Offload feature enabled [38622.216598] ixgbe 0000:06:00.1: (unregistered net_device): FCoE offload feature is not available. Disabling FCoE offload feature [38622.240926] ixgbe 0000:06:00.1: irq 82 for MSI/MSI-X [38622.240933] ixgbe 0000:06:00.1: irq 83 for MSI/MSI-X [38622.242488] ixgbe 0000:06:00.1: (PCI Express:5.0GT/s:Width x8) xxxxxxxxxxxxxxxx [38622.242821] ixgbe 0000:06:00.1: eth3: MAC: 2, PHY: 2, PBA No: G21371-003 [38622.242824] ixgbe 0000:06:00.1: eth3: Enabled Features: RxQ: 1 TxQ: 1 FdirPerfect RSC [38622.242904] ixgbe 0000:06:00.1: eth3: Intel(R) 10 Gigabit Network Connection [38622.246866] ixgbe 0000:06:00.0: eth2: changing MTU from 1500 to 9000 [38625.369956] ixgbe 0000:06:00.0: eth2: NIC Link is Up 1 Gbps, Flow Control: None however # grep 'Filt' *eth2* 7989-eth2.2:BPF Filtering : Disabled 7989-eth2.2:# Sw Filt. Rules : 1756 7989-eth2.2:# Hw Filt. Rules : 0 7991-eth2.1:BPF Filtering : Disabled 7991-eth2.1:# Sw Filt. Rules : 3188 7991-eth2.1:# Hw Filt. Rules : 0 7993-eth2.7:BPF Filtering : Disabled 7993-eth2.7:# Sw Filt. Rules : 2248 7993-eth2.7:# Hw Filt. Rules : 0 7995-eth2.4:BPF Filtering : Disabled 7995-eth2.4:# Sw Filt. Rules : 1102 7995-eth2.4:# Hw Filt. Rules : 0 7997-eth2.8:BPF Filtering : Disabled 7997-eth2.8:# Sw Filt. Rules : 1563 7997-eth2.8:# Hw Filt. Rules : 0 7999-eth2.3:BPF Filtering : Disabled 7999-eth2.3:# Sw Filt. Rules : 1344 7999-eth2.3:# Hw Filt. Rules : 0 8001-eth2.6:BPF Filtering : Disabled 8001-eth2.6:# Sw Filt. Rules : 1306 8001-eth2.6:# Hw Filt. Rules : 0 8003-eth2.5:BPF Filtering : Disabled 8003-eth2.5:# Sw Filt. Rules : 1245 8003-eth2.5:# Hw Filt. Rules : 0 I'd expect having "Hw filt rules" greater than 0. Or maybe it doesn't work that way
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