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Date: Fri, 19 Aug 2022 03:31:03 +0800 From: kernel test robot <lkp@...el.com> To: Sean Anderson <sean.anderson@...o.com>, netdev@...r.kernel.org, Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>, Russell King <linux@...linux.org.uk> Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org, "David S . Miller" <davem@...emloft.net>, Paolo Abeni <pabeni@...hat.com>, Vladimir Oltean <olteanv@...il.com>, linux-kernel@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Alexandru Marginean <alexandru.marginean@....com>, Sean Anderson <sean.anderson@...o.com> Subject: Re: [PATCH net-next v4 08/10] net: phylink: Adjust advertisement based on rate adaptation Hi Sean, I love your patch! Yet something to improve: [auto build test ERROR on net-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Sean-Anderson/net-phy-Add-support-for-rate-adaptation/20220819-005121 base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git e34cfee65ec891a319ce79797dda18083af33a76 config: arm-randconfig-r026-20220818 (https://download.01.org/0day-ci/archive/20220819/202208190347.I3rrGqW3-lkp@intel.com/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project aed5e3bea138ce581d682158eb61c27b3cfdd6ec) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/intel-lab-lkp/linux/commit/f4857d8d4f852b1cc3ae278785c209a7a0da0f67 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Sean-Anderson/net-phy-Add-support-for-rate-adaptation/20220819-005121 git checkout f4857d8d4f852b1cc3ae278785c209a7a0da0f67 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/net/phy/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@...el.com> All errors (new ones prefixed by >>): >> drivers/net/phy/phylink.c:543:7: error: call to undeclared function 'phylink_cap_from_speed_duplex'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] phylink_cap_from_speed_duplex(max_speed, DUPLEX_FULL)) { ^ drivers/net/phy/phylink.c:559:7: error: call to undeclared function 'phylink_cap_from_speed_duplex'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] phylink_cap_from_speed_duplex(max_speed, DUPLEX_HALF)) { ^ 2 errors generated. vim +/phylink_cap_from_speed_duplex +543 drivers/net/phy/phylink.c 431 432 /** 433 * phylink_get_capabilities() - get capabilities for a given MAC 434 * @interface: phy interface mode defined by &typedef phy_interface_t 435 * @mac_capabilities: bitmask of MAC capabilities 436 * @rate_adaptation: type of rate adaptation being performed 437 * 438 * Get the MAC capabilities that are supported by the @interface mode and 439 * @mac_capabilities. 440 */ 441 unsigned long phylink_get_capabilities(phy_interface_t interface, 442 unsigned long mac_capabilities, 443 int rate_adaptation) 444 { 445 int max_speed = phylink_interface_max_speed(interface); 446 unsigned long caps = MAC_SYM_PAUSE | MAC_ASYM_PAUSE; 447 unsigned long adapted_caps = 0; 448 449 switch (interface) { 450 case PHY_INTERFACE_MODE_USXGMII: 451 caps |= MAC_10000FD | MAC_5000FD | MAC_2500FD; 452 fallthrough; 453 454 case PHY_INTERFACE_MODE_RGMII_TXID: 455 case PHY_INTERFACE_MODE_RGMII_RXID: 456 case PHY_INTERFACE_MODE_RGMII_ID: 457 case PHY_INTERFACE_MODE_RGMII: 458 case PHY_INTERFACE_MODE_QSGMII: 459 case PHY_INTERFACE_MODE_SGMII: 460 case PHY_INTERFACE_MODE_GMII: 461 caps |= MAC_1000HD | MAC_1000FD; 462 fallthrough; 463 464 case PHY_INTERFACE_MODE_REVRMII: 465 case PHY_INTERFACE_MODE_RMII: 466 case PHY_INTERFACE_MODE_SMII: 467 case PHY_INTERFACE_MODE_REVMII: 468 case PHY_INTERFACE_MODE_MII: 469 caps |= MAC_10HD | MAC_10FD; 470 fallthrough; 471 472 case PHY_INTERFACE_MODE_100BASEX: 473 caps |= MAC_100HD | MAC_100FD; 474 break; 475 476 case PHY_INTERFACE_MODE_TBI: 477 case PHY_INTERFACE_MODE_MOCA: 478 case PHY_INTERFACE_MODE_RTBI: 479 case PHY_INTERFACE_MODE_1000BASEX: 480 caps |= MAC_1000HD; 481 fallthrough; 482 case PHY_INTERFACE_MODE_1000BASEKX: 483 case PHY_INTERFACE_MODE_TRGMII: 484 caps |= MAC_1000FD; 485 break; 486 487 case PHY_INTERFACE_MODE_2500BASEX: 488 caps |= MAC_2500FD; 489 break; 490 491 case PHY_INTERFACE_MODE_5GBASER: 492 caps |= MAC_5000FD; 493 break; 494 495 case PHY_INTERFACE_MODE_XGMII: 496 case PHY_INTERFACE_MODE_RXAUI: 497 case PHY_INTERFACE_MODE_XAUI: 498 case PHY_INTERFACE_MODE_10GBASER: 499 case PHY_INTERFACE_MODE_10GKR: 500 caps |= MAC_10000FD; 501 break; 502 503 case PHY_INTERFACE_MODE_25GBASER: 504 caps |= MAC_25000FD; 505 break; 506 507 case PHY_INTERFACE_MODE_XLGMII: 508 caps |= MAC_40000FD; 509 break; 510 511 case PHY_INTERFACE_MODE_INTERNAL: 512 caps |= ~0; 513 break; 514 515 case PHY_INTERFACE_MODE_NA: 516 case PHY_INTERFACE_MODE_MAX: 517 break; 518 } 519 520 switch (rate_adaptation) { 521 case RATE_ADAPT_OPEN_LOOP: 522 /* TODO */ 523 fallthrough; 524 case RATE_ADAPT_NONE: 525 adapted_caps = 0; 526 break; 527 case RATE_ADAPT_PAUSE: { 528 /* The MAC must support asymmetric pause towards the local 529 * device for this. We could allow just symmetric pause, but 530 * then we might have to renegotiate if the link partner 531 * doesn't support pause. This is because there's no way to 532 * accept pause frames without transmitting them if we only 533 * support symmetric pause. 534 */ 535 if (!(mac_capabilities & MAC_SYM_PAUSE) || 536 !(mac_capabilities & MAC_ASYM_PAUSE)) 537 break; 538 539 /* We can't adapt if the MAC doesn't support the interface's 540 * max speed at full duplex. 541 */ 542 if (mac_capabilities & > 543 phylink_cap_from_speed_duplex(max_speed, DUPLEX_FULL)) { 544 /* Although a duplex-adapting phy might exist, we 545 * conservatively remove these modes because the MAC 546 * will not be aware of the half-duplex nature of the 547 * link. 548 */ 549 adapted_caps = GENMASK(__fls(caps), __fls(MAC_10HD)); 550 adapted_caps &= ~(MAC_1000HD | MAC_100HD | MAC_10HD); 551 } 552 break; 553 } 554 case RATE_ADAPT_CRS: 555 /* The MAC must support half duplex at the interface's max 556 * speed. 557 */ 558 if (mac_capabilities & 559 phylink_cap_from_speed_duplex(max_speed, DUPLEX_HALF)) { 560 adapted_caps = GENMASK(__fls(caps), __fls(MAC_10HD)); 561 adapted_caps &= mac_capabilities; 562 } 563 break; 564 } 565 566 return (caps & mac_capabilities) | adapted_caps; 567 } 568 EXPORT_SYMBOL_GPL(phylink_get_capabilities); 569 -- 0-DAY CI Kernel Test Service https://01.org/lkp
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