Hi Dmitry, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on e34cfee65ec891a319ce79797dda18083af33a76] url: https://github.com/intel-lab-lkp/linux/commits/Dmitry-Safonov/net-tcp-Add-TCP-AO-support/20220819-010628 base: e34cfee65ec891a319ce79797dda18083af33a76 config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20220819/202208190249.8CCVAMql-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-5) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/469bd71e5ea011f6ae5a1554b75157471448341d git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Dmitry-Safonov/net-tcp-Add-TCP-AO-support/20220819-010628 git checkout 469bd71e5ea011f6ae5a1554b75157471448341d # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash net/ipv4/ net/ipv6/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> net/ipv4/tcp_ao.c:19:20: warning: no previous prototype for 'tcp_ao_do_lookup_rcvid' [-Wmissing-prototypes] 19 | struct tcp_ao_key *tcp_ao_do_lookup_rcvid(struct sock *sk, u8 keyid) | ^~~~~~~~~~~~~~~~~~~~~~ net/ipv4/tcp_ao.c:37:20: warning: no previous prototype for 'tcp_ao_do_lookup_sndid' [-Wmissing-prototypes] 37 | struct tcp_ao_key *tcp_ao_do_lookup_sndid(const struct sock *sk, u8 keyid) | ^~~~~~~~~~~~~~~~~~~~~~ >> net/ipv4/tcp_ao.c:96:5: warning: no previous prototype for 'tcp_ao_key_cmp' [-Wmissing-prototypes] 96 | int tcp_ao_key_cmp(const struct tcp_ao_key *key, | ^~~~~~~~~~~~~~ net/ipv4/tcp_ao.c:109:20: warning: no previous prototype for 'tcp_ao_do_lookup' [-Wmissing-prototypes] 109 | struct tcp_ao_key *tcp_ao_do_lookup(const struct sock *sk, | ^~~~~~~~~~~~~~~~ >> net/ipv4/tcp_ao.c:145:6: warning: no previous prototype for 'tcp_ao_link_mkt' [-Wmissing-prototypes] 145 | void tcp_ao_link_mkt(struct tcp_ao_info *ao, struct tcp_ao_key *mkt) | ^~~~~~~~~~~~~~~ vim +/tcp_ao_do_lookup_rcvid +19 net/ipv4/tcp_ao.c 18 > 19 struct tcp_ao_key *tcp_ao_do_lookup_rcvid(struct sock *sk, u8 keyid) 20 { 21 struct tcp_sock *tp = tcp_sk(sk); 22 struct tcp_ao_key *key; 23 struct tcp_ao_info *ao; 24 25 ao = rcu_dereference_check(tp->ao_info, lockdep_sock_is_held(sk)); 26 27 if (!ao) 28 return NULL; 29 30 hlist_for_each_entry_rcu(key, &ao->head, node) { 31 if (key->rcvid == keyid) 32 return key; 33 } 34 return NULL; 35 } 36 37 struct tcp_ao_key *tcp_ao_do_lookup_sndid(const struct sock *sk, u8 keyid) 38 { 39 struct tcp_ao_key *key; 40 struct tcp_ao_info *ao; 41 42 ao = rcu_dereference_check(tcp_sk(sk)->ao_info, 43 lockdep_sock_is_held(sk)); 44 if (!ao) 45 return NULL; 46 47 hlist_for_each_entry_rcu(key, &ao->head, node) { 48 if (key->sndid == keyid) 49 return key; 50 } 51 return NULL; 52 } 53 54 static inline int ipv4_prefix_cmp(const struct in_addr *addr1, 55 const struct in_addr *addr2, 56 unsigned int prefixlen) 57 { 58 __be32 mask = inet_make_mask(prefixlen); 59 60 if ((addr1->s_addr & mask) == (addr2->s_addr & mask)) 61 return 0; 62 return ((addr1->s_addr & mask) > (addr2->s_addr & mask)) ? 1 : -1; 63 } 64 65 static int __tcp_ao_key_cmp(const struct tcp_ao_key *key, 66 const union tcp_ao_addr *addr, u8 prefixlen, 67 int family, int sndid, int rcvid, u16 port) 68 { 69 if (sndid >= 0 && key->sndid != sndid) 70 return (key->sndid > sndid) ? 1 : -1; 71 if (rcvid >= 0 && key->rcvid != rcvid) 72 return (key->rcvid > rcvid) ? 1 : -1; 73 if (port != 0 && key->port != 0 && port != key->port) 74 return (key->port > port) ? 1 : -1; 75 76 if (family == AF_UNSPEC) 77 return 0; 78 if (key->family != family) 79 return (key->family > family) ? 1 : -1; 80 81 if (family == AF_INET) { 82 if (key->addr.a4.s_addr == INADDR_ANY) 83 return 0; 84 if (addr->a4.s_addr == INADDR_ANY) 85 return 0; 86 return ipv4_prefix_cmp(&key->addr.a4, &addr->a4, prefixlen); 87 } else { 88 if (ipv6_addr_any(&key->addr.a6) || ipv6_addr_any(&addr->a6)) 89 return 0; 90 if (ipv6_prefix_equal(&key->addr.a6, &addr->a6, prefixlen)) 91 return 0; 92 return memcmp(&key->addr.a6, &addr->a6, prefixlen); 93 } 94 } 95 > 96 int tcp_ao_key_cmp(const struct tcp_ao_key *key, 97 const union tcp_ao_addr *addr, u8 prefixlen, 98 int family, int sndid, int rcvid, u16 port) 99 { 100 if (family == AF_INET6 && ipv6_addr_v4mapped(&addr->a6)) { 101 __be32 addr4 = addr->a6.s6_addr32[3]; 102 103 return __tcp_ao_key_cmp(key, (union tcp_ao_addr *)&addr4, 104 prefixlen, AF_INET, sndid, rcvid, port); 105 } 106 return __tcp_ao_key_cmp(key, addr, prefixlen, family, sndid, rcvid, port); 107 } 108 109 struct tcp_ao_key *tcp_ao_do_lookup(const struct sock *sk, 110 const union tcp_ao_addr *addr, 111 int family, int sndid, int rcvid, u16 port) 112 { 113 struct tcp_ao_key *key; 114 struct tcp_ao_info *ao; 115 116 ao = rcu_dereference_check(tcp_sk(sk)->ao_info, 117 lockdep_sock_is_held(sk)); 118 if (!ao) 119 return NULL; 120 121 hlist_for_each_entry_rcu(key, &ao->head, node) { 122 if (!tcp_ao_key_cmp(key, addr, key->prefixlen, 123 family, sndid, rcvid, port)) 124 return key; 125 } 126 return NULL; 127 } 128 EXPORT_SYMBOL(tcp_ao_do_lookup); 129 130 static struct tcp_ao_info *tcp_ao_alloc_info(gfp_t flags, 131 struct tcp_ao_info *cloned_from) 132 { 133 struct tcp_ao_info *ao; 134 135 ao = kzalloc(sizeof(*ao), flags); 136 if (!ao) 137 return NULL; 138 INIT_HLIST_HEAD(&ao->head); 139 140 if (cloned_from) 141 ao->ao_flags = cloned_from->ao_flags; 142 return ao; 143 } 144 > 145 void tcp_ao_link_mkt(struct tcp_ao_info *ao, struct tcp_ao_key *mkt) 146 { 147 hlist_add_head_rcu(&mkt->node, &ao->head); 148 } 149 -- 0-DAY CI Kernel Test Service https://01.org/lkp
