tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 7f38ece6b510adaa28c8e625ff574fe6357a3960 commit: 6864d14bb90f03a1e5b7fbcc04fc2ba4d692bd3e [3058/3058] support 3SNIC 910/920/930 NIC config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20251030/202510302146.pnDXGiyc-lkp@i...) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project d1c086e82af239b245fe8d7832f2753436634990) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251030/202510302146.pnDXGiyc-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202510302146.pnDXGiyc-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from <built-in>:3: In file included from include/linux/compiler_types.h:150: include/linux/compiler-clang.h:42:9: error: '__SANITIZE_THREAD__' macro redefined [-Werror,-Wmacro-redefined] 42 | #define __SANITIZE_THREAD__ | ^ <built-in>:368:9: note: previous definition is here 368 | #define __SANITIZE_THREAD__ 1 | ^ In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_main.c:6: In file included from include/linux/pci.h:1663: In file included from include/linux/dmapool.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2204: include/linux/vmstat.h:508:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 509 | item]; | ~~~~ include/linux/vmstat.h:515:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 516 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:522:36: error: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Werror,-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:527:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 528 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:536:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 537 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_main.c:30: In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx.h:9: In file included from include/net/ip6_checksum.h:27:

...

include/net/ip.h:463:14: error: default initialization of an object of type 'typeof (rt->dst.expires)' (aka 'const unsigned long') leaves the object uninitialized [-Werror,-Wdefault-const-init-var-unsafe] 463 | if (mtu && time_before(jiffies, rt->dst.expires)) | ^ include/linux/jiffies.h:135:26: note: expanded from macro 'time_before' 135 | #define time_before(a,b) time_after(b,a) | ^ include/linux/jiffies.h:125:3: note: expanded from macro 'time_after' 125 | (typecheck(unsigned long, a) && \ | ^ include/linux/typecheck.h:11:12: note: expanded from macro 'typecheck' 11 | typeof(x) __dummy2; \ | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_main.c:883:6: error: no previous prototype for function 'sss_nic_port_module_cable_plug' [-Werror,-Wmissing-prototypes] 883 | void sss_nic_port_module_cable_plug(struct sss_nic_dev *nic_dev, void *event_data) | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_main.c:883:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 883 | void sss_nic_port_module_cable_plug(struct sss_nic_dev *nic_dev, void *event_data) | ^ | static drivers/net/ethernet/3snic/sssnic/nic/sss_nic_main.c:889:6: error: no previous prototype for function 'sss_nic_port_module_cable_unplug' [-Werror,-Wmissing-prototypes] 889 | void sss_nic_port_module_cable_unplug(struct sss_nic_dev *nic_dev, void *event_data) | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_main.c:889:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 889 | void sss_nic_port_module_cable_unplug(struct sss_nic_dev *nic_dev, void *event_data) | ^ | static drivers/net/ethernet/3snic/sssnic/nic/sss_nic_main.c:895:6: error: no previous prototype for function 'sss_nic_port_module_link_err' [-Werror,-Wmissing-prototypes] 895 | void sss_nic_port_module_link_err(struct sss_nic_dev *nic_dev, void *event_data) | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_main.c:895:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 895 | void sss_nic_port_module_link_err(struct sss_nic_dev *nic_dev, void *event_data) | ^ | static drivers/net/ethernet/3snic/sssnic/nic/sss_nic_main.c:1034:22: error: no previous prototype for function 'get_nic_uld_info' [-Werror,-Wmissing-prototypes] 1034 | struct sss_uld_info *get_nic_uld_info(void) | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_main.c:1034:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1034 | struct sss_uld_info *get_nic_uld_info(void) | ^ | static 11 errors generated. -- In file included from <built-in>:3: In file included from include/linux/compiler_types.h:150: include/linux/compiler-clang.h:42:9: error: '__SANITIZE_THREAD__' macro redefined [-Werror,-Wmacro-redefined] 42 | #define __SANITIZE_THREAD__ | ^ <built-in>:368:9: note: previous definition is here 368 | #define __SANITIZE_THREAD__ 1 | ^ In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx.c:6: In file included from include/net/xfrm.h:9: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:8: In file included from include/linux/cacheflush.h:5: In file included from arch/arm64/include/asm/cacheflush.h:11: In file included from include/linux/kgdb.h:19: In file included from include/linux/kprobes.h:28: In file included from include/linux/ftrace.h:13: In file included from include/linux/kallsyms.h:13: In file included from include/linux/mm.h:2204: include/linux/vmstat.h:508:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 509 | item]; | ~~~~ include/linux/vmstat.h:515:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 516 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:522:36: error: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Werror,-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:527:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 528 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:536:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 537 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx.c:6: In file included from include/net/xfrm.h:22: include/net/ip.h:463:14: error: default initialization of an object of type 'typeof (rt->dst.expires)' (aka 'const unsigned long') leaves the object uninitialized [-Werror,-Wdefault-const-init-var-unsafe] 463 | if (mtu && time_before(jiffies, rt->dst.expires)) | ^ include/linux/jiffies.h:135:26: note: expanded from macro 'time_before' 135 | #define time_before(a,b) time_after(b,a) | ^ include/linux/jiffies.h:125:3: note: expanded from macro 'time_after' 125 | (typecheck(unsigned long, a) && \ | ^ include/linux/typecheck.h:11:12: note: expanded from macro 'typecheck' 11 | typeof(x) __dummy2; \ | ^ In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx.c:6: In file included from include/net/xfrm.h:25: include/net/ip6_fib.h:279:10: error: default initialization of an object of type 'typeof (f6i->expires)' (aka 'const unsigned long') leaves the object uninitialized [-Werror,-Wdefault-const-init-var-unsafe] 279 | return time_after(jiffies, f6i->expires); | ^ include/linux/jiffies.h:126:3: note: expanded from macro 'time_after' 126 | typecheck(unsigned long, b) && \ | ^ include/linux/typecheck.h:11:12: note: expanded from macro 'typecheck' 11 | typeof(x) __dummy2; \ | ^ 8 errors generated. -- In file included from <built-in>:3: In file included from include/linux/compiler_types.h:150: include/linux/compiler-clang.h:42:9: error: '__SANITIZE_THREAD__' macro redefined [-Werror,-Wmacro-redefined] 42 | #define __SANITIZE_THREAD__ | ^ <built-in>:368:9: note: previous definition is here 368 | #define __SANITIZE_THREAD__ 1 | ^ In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:6: In file included from include/net/xfrm.h:9: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:8: In file included from include/linux/cacheflush.h:5: In file included from arch/arm64/include/asm/cacheflush.h:11: In file included from include/linux/kgdb.h:19: In file included from include/linux/kprobes.h:28: In file included from include/linux/ftrace.h:13: In file included from include/linux/kallsyms.h:13: In file included from include/linux/mm.h:2204: include/linux/vmstat.h:508:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 509 | item]; | ~~~~ include/linux/vmstat.h:515:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 516 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:522:36: error: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Werror,-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:527:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 528 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:536:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 537 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:6: In file included from include/net/xfrm.h:22: include/net/ip.h:463:14: error: default initialization of an object of type 'typeof (rt->dst.expires)' (aka 'const unsigned long') leaves the object uninitialized [-Werror,-Wdefault-const-init-var-unsafe] 463 | if (mtu && time_before(jiffies, rt->dst.expires)) | ^ include/linux/jiffies.h:135:26: note: expanded from macro 'time_before' 135 | #define time_before(a,b) time_after(b,a) | ^ include/linux/jiffies.h:125:3: note: expanded from macro 'time_after' 125 | (typecheck(unsigned long, a) && \ | ^ include/linux/typecheck.h:11:12: note: expanded from macro 'typecheck' 11 | typeof(x) __dummy2; \ | ^ In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:6: In file included from include/net/xfrm.h:25: include/net/ip6_fib.h:279:10: error: default initialization of an object of type 'typeof (f6i->expires)' (aka 'const unsigned long') leaves the object uninitialized [-Werror,-Wdefault-const-init-var-unsafe] 279 | return time_after(jiffies, f6i->expires); | ^ include/linux/jiffies.h:126:3: note: expanded from macro 'time_after' 126 | typecheck(unsigned long, b) && \ | ^ include/linux/typecheck.h:11:12: note: expanded from macro 'typecheck' 11 | typeof(x) __dummy2; \ | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:42:5: error: no previous prototype for function 'sss_nic_alloc_sq_resource' [-Werror,-Wmissing-prototypes] 42 | int sss_nic_alloc_sq_resource(struct sss_nic_dev *nic_dev, | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:42:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 42 | int sss_nic_alloc_sq_resource(struct sss_nic_dev *nic_dev, | ^ | static drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:87:6: error: no previous prototype for function 'sss_nic_free_sq_resource' [-Werror,-Wmissing-prototypes] 87 | void sss_nic_free_sq_resource(struct sss_nic_dev *nic_dev, | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:87:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 87 | void sss_nic_free_sq_resource(struct sss_nic_dev *nic_dev, | ^ | static drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:104:6: error: no previous prototype for function 'sss_nic_init_all_sq' [-Werror,-Wmissing-prototypes] 104 | void sss_nic_init_all_sq(struct sss_nic_dev *nic_dev, | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:104:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 104 | void sss_nic_init_all_sq(struct sss_nic_dev *nic_dev, | ^ | static drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:128:5: error: no previous prototype for function 'sss_nic_alloc_sq_desc_group' [-Werror,-Wmissing-prototypes] 128 | int sss_nic_alloc_sq_desc_group(struct sss_nic_dev *nic_dev) | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:128:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 128 | int sss_nic_alloc_sq_desc_group(struct sss_nic_dev *nic_dev) | ^ | static drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:153:6: error: no previous prototype for function 'sss_nic_free_sq_desc_group' [-Werror,-Wmissing-prototypes] 153 | void sss_nic_free_sq_desc_group(struct sss_nic_dev *nic_dev) | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:153:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 153 | void sss_nic_free_sq_desc_group(struct sss_nic_dev *nic_dev) | ^ | static drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:200:6: error: no previous prototype for function 'sss_nic_flush_all_sq' [-Werror,-Wmissing-prototypes] 200 | void sss_nic_flush_all_sq(struct sss_nic_dev *nic_dev) | ^ drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx_init.c:200:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 200 | void sss_nic_flush_all_sq(struct sss_nic_dev *nic_dev) | ^ | static 14 errors generated. -- In file included from <built-in>:3: In file included from include/linux/compiler_types.h:150: include/linux/compiler-clang.h:42:9: error: '__SANITIZE_THREAD__' macro redefined [-Werror,-Wmacro-redefined] 42 | #define __SANITIZE_THREAD__ | ^ <built-in>:368:9: note: previous definition is here 368 | #define __SANITIZE_THREAD__ 1 | ^ In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_dcb.c:7: In file included from include/linux/pci.h:1663: In file included from include/linux/dmapool.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2204: include/linux/vmstat.h:508:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 509 | item]; | ~~~~ include/linux/vmstat.h:515:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 516 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:522:36: error: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Werror,-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:527:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 528 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:536:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion] 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 537 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_dcb.c:23: In file included from drivers/net/ethernet/3snic/sssnic/nic/sss_nic_tx.h:9: In file included from include/net/ip6_checksum.h:27: include/net/ip.h:463:14: error: default initialization of an object of type 'typeof (rt->dst.expires)' (aka 'const unsigned long') leaves the object uninitialized [-Werror,-Wdefault-const-init-var-unsafe] 463 | if (mtu && time_before(jiffies, rt->dst.expires)) | ^ include/linux/jiffies.h:135:26: note: expanded from macro 'time_before' 135 | #define time_before(a,b) time_after(b,a) | ^ include/linux/jiffies.h:125:3: note: expanded from macro 'time_after' 125 | (typecheck(unsigned long, a) && \ | ^ include/linux/typecheck.h:11:12: note: expanded from macro 'typecheck' 11 | typeof(x) __dummy2; \ | ^ 7 errors generated. ..

vim +463 include/net/ip.h 1b346576359c72 Hannes Frederic Sowa 2014-02-26 451 f87c10a8aa1e82 Hannes Frederic Sowa 2014-01-09 452 static inline unsigned int ip_dst_mtu_maybe_forward(const struct dst_entry *dst, f87c10a8aa1e82 Hannes Frederic Sowa 2014-01-09 453 bool forwarding) f87c10a8aa1e82 Hannes Frederic Sowa 2014-01-09 454 { ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 455 const struct rtable *rt = container_of(dst, struct rtable, dst); f87c10a8aa1e82 Hannes Frederic Sowa 2014-01-09 456 struct net *net = dev_net(dst->dev); 02a1b175b0e92d Maciej Żenczykowski 2020-09-23 457 unsigned int mtu; f87c10a8aa1e82 Hannes Frederic Sowa 2014-01-09 458 60c158dc7b1f05 Kuniyuki Iwashima 2022-07-13 459 if (READ_ONCE(net->ipv4.sysctl_ip_fwd_use_pmtu) || d52e5a7e7ca494 Sabrina Dubroca 2018-03-14 460 ip_mtu_locked(dst) || ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 461 !forwarding) { ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 462 mtu = rt->rt_pmtu; ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 @463 if (mtu && time_before(jiffies, rt->dst.expires)) ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 464 goto out; ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 465 } f87c10a8aa1e82 Hannes Frederic Sowa 2014-01-09 466 02a1b175b0e92d Maciej Żenczykowski 2020-09-23 467 /* 'forwarding = true' case should always honour route mtu */ 02a1b175b0e92d Maciej Żenczykowski 2020-09-23 468 mtu = dst_metric_raw(dst, RTAX_MTU); ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 469 if (mtu) ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 470 goto out; ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 471 ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 472 mtu = READ_ONCE(dst->dev->mtu); ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 473 ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 474 if (unlikely(ip_mtu_locked(dst))) { ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 475 if (rt->rt_uses_gateway && mtu > 576) ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 476 mtu = 576; ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 477 } ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 478 ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 479 out: ac6627a28dbfb5 Vadim Fedorenko 2021-07-20 480 mtu = min_t(unsigned int, mtu, IP_MAX_MTU); 02a1b175b0e92d Maciej Żenczykowski 2020-09-23 481 fade56410c22ca Vadim Fedorenko 2021-06-25 482 return mtu - lwtunnel_headroom(dst->lwtstate, mtu); f87c10a8aa1e82 Hannes Frederic Sowa 2014-01-09 483 } f87c10a8aa1e82 Hannes Frederic Sowa 2014-01-09 484 :::::: The code at line 463 was first introduced by commit :::::: ac6627a28dbfb5d96736544a00c3938fa7ea6dfb net: ipv4: Consolidate ipv4_mtu and ip_dst_mtu_maybe_forward :::::: TO: Vadim Fedorenko <vfedorenko@novek.ru> :::::: CC: David S. Miller <davem@davemloft.net> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki