Hi Stanislav, kernel test robot noticed the following build errors: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Stanislav-Fomichev/xsk-Support-tx_metadata_len/20231004-040718 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20231003200522.1914523-6-sdf%40google.com patch subject: [PATCH bpf-next v3 05/10] net: stmmac: Add Tx HWTS support to XDP ZC config: riscv-rv32_defconfig (https://download.01.org/0day-ci/archive/20231006/202310061208.tATL34LR-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231006/202310061208.tATL34LR-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310061208.tATL34LR-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:2554:3: error: call to undeclared function 'xsk_tx_metadata_to_compl'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 2554 | xsk_tx_metadata_to_compl(meta, &tx_q->tx_skbuff_dma[entry].xsk_meta); | ^ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:2554:3: note: did you mean 'xsk_tx_metadata_complete'? include/net/xdp_sock.h:185:20: note: 'xsk_tx_metadata_complete' declared here 185 | static inline void xsk_tx_metadata_complete(struct xsk_tx_metadata_compl *compl, | ^ 1 error generated. vim +/xsk_tx_metadata_to_compl +2554 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c 2464 2465 static bool stmmac_xdp_xmit_zc(struct stmmac_priv *priv, u32 queue, u32 budget) 2466 { 2467 struct netdev_queue *nq = netdev_get_tx_queue(priv->dev, queue); 2468 struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue]; 2469 struct stmmac_txq_stats *txq_stats = &priv->xstats.txq_stats[queue]; 2470 struct xsk_buff_pool *pool = tx_q->xsk_pool; 2471 unsigned int entry = tx_q->cur_tx; 2472 struct dma_desc *tx_desc = NULL; 2473 struct xdp_desc xdp_desc; 2474 bool work_done = true; 2475 u32 tx_set_ic_bit = 0; 2476 unsigned long flags; 2477 2478 /* Avoids TX time-out as we are sharing with slow path */ 2479 txq_trans_cond_update(nq); 2480 2481 budget = min(budget, stmmac_tx_avail(priv, queue)); 2482 2483 while (budget-- > 0) { 2484 struct stmmac_metadata_request meta_req; 2485 struct xsk_tx_metadata *meta = NULL; 2486 dma_addr_t dma_addr; 2487 bool set_ic; 2488 2489 /* We are sharing with slow path and stop XSK TX desc submission when 2490 * available TX ring is less than threshold. 2491 */ 2492 if (unlikely(stmmac_tx_avail(priv, queue) < STMMAC_TX_XSK_AVAIL) || 2493 !netif_carrier_ok(priv->dev)) { 2494 work_done = false; 2495 break; 2496 } 2497 2498 if (!xsk_tx_peek_desc(pool, &xdp_desc)) 2499 break; 2500 2501 if (likely(priv->extend_desc)) 2502 tx_desc = (struct dma_desc *)(tx_q->dma_etx + entry); 2503 else if (tx_q->tbs & STMMAC_TBS_AVAIL) 2504 tx_desc = &tx_q->dma_entx[entry].basic; 2505 else 2506 tx_desc = tx_q->dma_tx + entry; 2507 2508 dma_addr = xsk_buff_raw_get_dma(pool, xdp_desc.addr); 2509 meta = xsk_buff_get_metadata(pool, xdp_desc.addr); 2510 xsk_buff_raw_dma_sync_for_device(pool, dma_addr, xdp_desc.len); 2511 2512 tx_q->tx_skbuff_dma[entry].buf_type = STMMAC_TXBUF_T_XSK_TX; 2513 2514 /* To return XDP buffer to XSK pool, we simple call 2515 * xsk_tx_completed(), so we don't need to fill up 2516 * 'buf' and 'xdpf'. 2517 */ 2518 tx_q->tx_skbuff_dma[entry].buf = 0; 2519 tx_q->xdpf[entry] = NULL; 2520 2521 tx_q->tx_skbuff_dma[entry].map_as_page = false; 2522 tx_q->tx_skbuff_dma[entry].len = xdp_desc.len; 2523 tx_q->tx_skbuff_dma[entry].last_segment = true; 2524 tx_q->tx_skbuff_dma[entry].is_jumbo = false; 2525 2526 stmmac_set_desc_addr(priv, tx_desc, dma_addr); 2527 2528 tx_q->tx_count_frames++; 2529 2530 if (!priv->tx_coal_frames[queue]) 2531 set_ic = false; 2532 else if (tx_q->tx_count_frames % priv->tx_coal_frames[queue] == 0) 2533 set_ic = true; 2534 else 2535 set_ic = false; 2536 2537 meta_req.priv = priv; 2538 meta_req.tx_desc = tx_desc; 2539 meta_req.set_ic = &set_ic; 2540 xsk_tx_metadata_request(meta, &stmmac_xsk_tx_metadata_ops, &meta_req); 2541 2542 if (set_ic) { 2543 tx_q->tx_count_frames = 0; 2544 stmmac_set_tx_ic(priv, tx_desc); 2545 tx_set_ic_bit++; 2546 } 2547 2548 stmmac_prepare_tx_desc(priv, tx_desc, 1, xdp_desc.len, 2549 true, priv->mode, true, true, 2550 xdp_desc.len); 2551 2552 stmmac_enable_dma_transmission(priv, priv->ioaddr); 2553 > 2554 xsk_tx_metadata_to_compl(meta, &tx_q->tx_skbuff_dma[entry].xsk_meta); 2555 2556 tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_conf.dma_tx_size); 2557 entry = tx_q->cur_tx; 2558 } 2559 flags = u64_stats_update_begin_irqsave(&txq_stats->syncp); 2560 txq_stats->tx_set_ic_bit += tx_set_ic_bit; 2561 u64_stats_update_end_irqrestore(&txq_stats->syncp, flags); 2562 2563 if (tx_desc) { 2564 stmmac_flush_tx_descriptors(priv, queue); 2565 xsk_tx_release(pool); 2566 } 2567 2568 /* Return true if all of the 3 conditions are met 2569 * a) TX Budget is still available 2570 * b) work_done = true when XSK TX desc peek is empty (no more 2571 * pending XSK TX for transmission) 2572 */ 2573 return !!budget && work_done; 2574 } 2575 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
