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kng2ioSJEbMUFt7HEIBpgOs3ND8N3P/0q+s7m2i9AKGZGZ5jnhNgCtEP8dVsb9RT1BfMHIMA9Ie9SLLFk095k0xwa26SnmXvGGc18+Oa+eefIzRPYI9qkoPZsiPnPaLaFtSg2CCM87kBt0lf85b25VT/5IZ6YgJ+J4RisMHEzzR+EnGiXyGw80yUidb2i1FcjeXrp0b0MnIZfo7baI4B3OUfOfncVve6Y3wX/X+BS3pkGTmfu7fPGKJ7wYhhqp8RTIsKQ+lUfRCGvMxc5jqxpZTNM4fR/3jOAWdvFKNs6mz2WIRT8SWHSHH+3YUqUq0Zmh0ApfhyPFUUStKIECDnT6Gc3XyAzU1quya8bu9uRgb6B/hdISEmhe8ifFA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Przemek Kitszel Date: Fri, 5 Apr 2024 12:32:55 +0200 > On 4/4/24 17:44, Alexander Lobakin wrote: >> Add a couple intuitive helpers to hide Rx buffer implementation details [...] >> +struct libeth_fqe { >> +    struct page        *page; >> +    u32            offset; >> +    u32            truesize; >> +} __aligned_largest; >> + >> +/** >> + * struct libeth_fq - structure representing a buffer queue >> + * @fp: hotpath part of the structure >> + * @pp: &page_pool for buffer management >> + * @fqes: array of Rx buffers >> + * @truesize: size to allocate per buffer, w/overhead >> + * @count: number of descriptors/buffers the queue has >> + * @buf_len: HW-writeable length per each buffer >> + * @nid: ID of the closest NUMA node with memory >> + */ >> +struct libeth_fq { >> +    struct_group_tagged(libeth_fq_fp, fp, >> +        struct page_pool    *pp; >> +        struct libeth_fqe    *fqes; >> + >> +        u32            truesize; >> +        u32            count; >> +    ); >> + >> +    /* Cold fields */ >> +    u32            buf_len; >> +    int            nid; >> +}; > > [...] > > Could you please unpack the meaning of `fq` and `fqe` acronyms here? Rx: RQ -- receive queue, on which you get Rx DMA complete descriptors FQ -- fill queue, the one you fill with free buffers FQE -- fill queue element, i.e. smth like "iavf_rx_buffer" or whatever Tx: SQ -- send queue, the one you fill with buffers to transmit SQE -- send queue element, i.e. "iavf_tx_buffer" CQ -- completion queue, on which you get Tx DMA complete descriptors XDPSQ, XSkRQ etc. -- same as above, but for XDP / XSk I know that rxq, txq, bufq, complq is more common since it's been used for years, but I like these "new" ones more :> > > otherwise the whole series is very good for me, thank you very much! > Thanks, Olek