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Tony Nguyen says: ==================== idpf: add XSk support Alexander Lobakin says: Add support for XSk xmit and receive using libeth_xdp. This includes adding interfaces to reconfigure/enable/disable only a particular set of queues and support for checksum offload XSk Tx metadata. libeth_xdp's implementation mostly matches the one of ice: batched allocations and sending, unrolled descriptor writes etc. But unlike other Intel drivers, XSk wakeup is implemented using CSD/IPI instead of HW "software interrupt". In lots of different tests, this yielded way better perf than SW interrupts, but also, this gives better control over which CPU will handle the NAPI loop (SW interrupts are a subject to irqbalance and stuff, while CSDs are strictly pinned 1:1 to the core of the same index). Note that the header split is always disabled for XSk queues, as for now we see no reasons to have it there. XSk xmit perf is up to 3x comparing to ice. XSk XDP_PASS is also faster a bunch as it uses system percpu page_pools, so that the only overhead left is memcpy(). The rest is at least comparable. * '200GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue: idpf: enable XSk features and ndo_xsk_wakeup idpf: implement Rx path for AF_XDP idpf: implement XSk xmit idpf: add XSk pool initialization idpf: add virtchnl functions to manage selected queues ==================== Link: https://patch.msgid.link/20250924175230.1290529-1-anthony.l.nguyen@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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