+TO: Ethdev maintainers, regarding new Ethdev APIs > From: Anurag Mandal [mailto:[email protected]] > Sent: Sunday, 16 November 2025 04.58 > > VRRP advertisement packets are dropped as TX-errors upon transmission > from > a vsi of ice PF due to MAC anti-spoof check which is enabled by > default. > There is no way to disable this check in the Tx direction to avoid > these packets being dropped. > > This patch introduces devargs "mac-anti-spoof" to allow user to > disable MAC anti-spoof check. Disable MAC Anti-spoof check > in the Tx direction to avoid getting dropped as TX-errors upon packet > transmission when their source MAC address matches one of the MAC > addresses assigned to that same NIC port. > > Signed-off-by: Anurag Mandal <[email protected]> > ---
This is the same story as with Source Prune. Please disable source-prune filtering by default, and provide an option to enable it. Also, suggest shortening the devargs name to simply "anti-spoof", like "source-prune"; they both operate on MAC basis. Let's make something generic instead, to replace those silly devargs. We have individual Ethdev APIs to enable/disable various Rx filtering, e.g. "promiscuous", "all multicast". Obviously, we don't want to introduce new APIs for every semi-exotic filter any NIC may offer, like "source prune" and "anti spoof", but we could introduce a set of generic Ethdev APIs to support filters such as these, using a bitfield enum. E.g.: /* Enable one or more filters. */ int rte_ethdev_filter_enable(uin16_t port_id, uint64_t filter); /* Disable one or more filters. */ int rte_ethdev_filter_disable(uin16_t port_id, uint64_t filter); /* Get bit field of filters enabled. */ int64_t rte_ethdev_filter_get(uin16_t port_id); /* Get bit field of filters supported by device. */ int64_t rte_ethdev_filter_capa(uin16_t port_id); /**/ /** Destination MAC must match NIC's MAC address. * (This is the inverse of Promiscuous.) * Default enabled. */ #define RTE_ETH_FILTER_RX_NON_PROMISC RTE_BIT64(0) /** Multicast Hash. * (This is the inverse of All Multicast.) * Default enabled. */ #define RTE_ETH_FILTER_RX_MULTICAST RTE_BIT64(1) /** Source Prune. * [Insert description here.] */ #define RTE_ETH_FILTER_RX_SOURCE_PRUNE RTE_BIT64(2) /* Add new Rx filters here, in increasing order. */ /* Add new Tx filters here, in decreasing order. */ /** Anti-Spoof. * [Insert description here.] */ #define RTE_ETH_FILTER_RX_SOURCE_PRUNE RTE_BIT64(62) /** Used for error return values which are negative. */ #define RTE_ETH_FILTER_ERROR RTE_BIT64(63)
