Re: [net-next PATCH v2 3/4] net: stmmac: move TX timer arm after DMA enable
From: kernel test robot
Date: Tue Oct 17 2023 - 00:53:01 EST
Hi Christian,
kernel test robot noticed the following build warnings:
[auto build test WARNING on net-next/main]
url: https://github.com/intel-lab-lkp/linux/commits/Christian-Marangi/net-introduce-napi_is_scheduled-helper/20231017-104641
base: net-next/main
patch link: https://lore.kernel.org/r/20231012100459.6158-4-ansuelsmth%40gmail.com
patch subject: [net-next PATCH v2 3/4] net: stmmac: move TX timer arm after DMA enable
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20231017/202310171222.UN3fzVpz-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231017/202310171222.UN3fzVpz-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/202310171222.UN3fzVpz-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:2549:28: error: expected ';', ',' or ')' before 'bool'
2549 | bool *pending_packets)
| ^~~~
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: In function 'stmmac_napi_poll_tx':
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:5586:21: error: implicit declaration of function 'stmmac_tx_clean'; did you mean 'stmmac_rx_vlan'? [-Werror=implicit-function-declaration]
5586 | work_done = stmmac_tx_clean(priv, budget, chan, &pending_packets);
| ^~~~~~~~~~~~~~~
| stmmac_rx_vlan
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: At top level:
>> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:2425:13: warning: 'stmmac_xdp_xmit_zc' defined but not used [-Wunused-function]
2425 | static bool stmmac_xdp_xmit_zc(struct stmmac_priv *priv, u32 queue, u32 budget)
| ^~~~~~~~~~~~~~~~~~
>> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:536:13: warning: 'stmmac_get_tx_hwtstamp' defined but not used [-Wunused-function]
536 | static void stmmac_get_tx_hwtstamp(struct stmmac_priv *priv,
| ^~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +/stmmac_xdp_xmit_zc +2425 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
47dd7a540b8a0c drivers/net/stmmac/stmmac_main.c Giuseppe Cavallaro 2009-10-14 2424
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 @2425 static bool stmmac_xdp_xmit_zc(struct stmmac_priv *priv, u32 queue, u32 budget)
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2426 {
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2427 struct netdev_queue *nq = netdev_get_tx_queue(priv->dev, queue);
8531c80800c10e drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Christian Marangi 2022-07-23 2428 struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
8070274b472e2e drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Jisheng Zhang 2023-09-18 2429 struct stmmac_txq_stats *txq_stats = &priv->xstats.txq_stats[queue];
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2430 struct xsk_buff_pool *pool = tx_q->xsk_pool;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2431 unsigned int entry = tx_q->cur_tx;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2432 struct dma_desc *tx_desc = NULL;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2433 struct xdp_desc xdp_desc;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2434 bool work_done = true;
133466c3bbe171 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Jisheng Zhang 2023-07-18 2435 u32 tx_set_ic_bit = 0;
133466c3bbe171 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Jisheng Zhang 2023-07-18 2436 unsigned long flags;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2437
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2438 /* Avoids TX time-out as we are sharing with slow path */
e92af33e472cf3 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Alexander Lobakin 2021-11-17 2439 txq_trans_cond_update(nq);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2440
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2441 budget = min(budget, stmmac_tx_avail(priv, queue));
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2442
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2443 while (budget-- > 0) {
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2444 dma_addr_t dma_addr;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2445 bool set_ic;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2446
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2447 /* We are sharing with slow path and stop XSK TX desc submission when
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2448 * available TX ring is less than threshold.
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2449 */
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2450 if (unlikely(stmmac_tx_avail(priv, queue) < STMMAC_TX_XSK_AVAIL) ||
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2451 !netif_carrier_ok(priv->dev)) {
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2452 work_done = false;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2453 break;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2454 }
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2455
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2456 if (!xsk_tx_peek_desc(pool, &xdp_desc))
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2457 break;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2458
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2459 if (likely(priv->extend_desc))
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2460 tx_desc = (struct dma_desc *)(tx_q->dma_etx + entry);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2461 else if (tx_q->tbs & STMMAC_TBS_AVAIL)
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2462 tx_desc = &tx_q->dma_entx[entry].basic;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2463 else
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2464 tx_desc = tx_q->dma_tx + entry;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2465
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2466 dma_addr = xsk_buff_raw_get_dma(pool, xdp_desc.addr);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2467 xsk_buff_raw_dma_sync_for_device(pool, dma_addr, xdp_desc.len);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2468
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2469 tx_q->tx_skbuff_dma[entry].buf_type = STMMAC_TXBUF_T_XSK_TX;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2470
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2471 /* To return XDP buffer to XSK pool, we simple call
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2472 * xsk_tx_completed(), so we don't need to fill up
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2473 * 'buf' and 'xdpf'.
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2474 */
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2475 tx_q->tx_skbuff_dma[entry].buf = 0;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2476 tx_q->xdpf[entry] = NULL;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2477
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2478 tx_q->tx_skbuff_dma[entry].map_as_page = false;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2479 tx_q->tx_skbuff_dma[entry].len = xdp_desc.len;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2480 tx_q->tx_skbuff_dma[entry].last_segment = true;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2481 tx_q->tx_skbuff_dma[entry].is_jumbo = false;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2482
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2483 stmmac_set_desc_addr(priv, tx_desc, dma_addr);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2484
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2485 tx_q->tx_count_frames++;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2486
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2487 if (!priv->tx_coal_frames[queue])
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2488 set_ic = false;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2489 else if (tx_q->tx_count_frames % priv->tx_coal_frames[queue] == 0)
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2490 set_ic = true;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2491 else
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2492 set_ic = false;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2493
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2494 if (set_ic) {
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2495 tx_q->tx_count_frames = 0;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2496 stmmac_set_tx_ic(priv, tx_desc);
133466c3bbe171 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Jisheng Zhang 2023-07-18 2497 tx_set_ic_bit++;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2498 }
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2499
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2500 stmmac_prepare_tx_desc(priv, tx_desc, 1, xdp_desc.len,
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2501 true, priv->mode, true, true,
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2502 xdp_desc.len);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2503
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2504 stmmac_enable_dma_transmission(priv, priv->ioaddr);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2505
8531c80800c10e drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Christian Marangi 2022-07-23 2506 tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_conf.dma_tx_size);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2507 entry = tx_q->cur_tx;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2508 }
8070274b472e2e drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Jisheng Zhang 2023-09-18 2509 flags = u64_stats_update_begin_irqsave(&txq_stats->syncp);
8070274b472e2e drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Jisheng Zhang 2023-09-18 2510 txq_stats->tx_set_ic_bit += tx_set_ic_bit;
8070274b472e2e drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Jisheng Zhang 2023-09-18 2511 u64_stats_update_end_irqrestore(&txq_stats->syncp, flags);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2512
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2513 if (tx_desc) {
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2514 stmmac_flush_tx_descriptors(priv, queue);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2515 xsk_tx_release(pool);
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2516 }
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2517
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2518 /* Return true if all of the 3 conditions are met
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2519 * a) TX Budget is still available
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2520 * b) work_done = true when XSK TX desc peek is empty (no more
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2521 * pending XSK TX for transmission)
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2522 */
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2523 return !!budget && work_done;
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2524 }
132c32ee5bc09b drivers/net/ethernet/stmicro/stmmac/stmmac_main.c Ong Boon Leong 2021-04-13 2525
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