Hi Florian, [auto build test ERROR on nf-next/master] url: https://github.com/0day-ci/linux/commits/Florian-Westphal/netfilter-handle-race-w-module-removal-and-nfqueue/20170726-024704 base: https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git master config: x86_64-randconfig-x002-201730 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): In file included from net/netfilter/nfnetlink_queue.c:35:0: include/net/netfilter/nf_conntrack.h:65:22: error: field 'ct_general' has incomplete type struct nf_conntrack ct_general; ^~~~~~~~~~ include/net/netfilter/nf_conntrack.h: In function 'nf_ct_get': >> include/net/netfilter/nf_conntrack.h:154:15: error: 'const struct sk_buff' has no member named '_nfct' *ctinfo = skb->_nfct & NFCT_INFOMASK; ^~ include/net/netfilter/nf_conntrack.h:156:31: error: 'const struct sk_buff' has no member named '_nfct' return (struct nf_conn *)(skb->_nfct & NFCT_PTRMASK); ^~ include/net/netfilter/nf_conntrack.h: In function 'nf_ct_put': include/net/netfilter/nf_conntrack.h:163:2: error: implicit declaration of function 'nf_conntrack_put' [-Werror=implicit-function-declaration] nf_conntrack_put(&ct->ct_general); ^~~~~~~~~~~~~~~~ include/net/netfilter/nf_conntrack.h: In function 'nf_ct_set': >> include/net/netfilter/nf_conntrack.h:327:5: error: 'struct sk_buff' has no member named '_nfct' skb->_nfct = (unsigned long)ct | info; ^~ In file included from include/uapi/linux/stddef.h:1:0, from include/linux/stddef.h:4, from include/uapi/linux/posix_types.h:4, from include/uapi/linux/types.h:13, from include/linux/types.h:5, from include/linux/list.h:4, from include/linux/module.h:9, from net/netfilter/nfnetlink_queue.c:17: net/netfilter/nfnetlink_queue.c: At top level: include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:390:2: note: in expansion of macro 'if' if (p_size == (size_t)-1 && q_size == (size_t)-1) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:380:2: note: in expansion of macro 'if' if (p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:378:2: note: in expansion of macro 'if' if (__builtin_constant_p(size) && p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:369:2: note: in expansion of macro 'if' if (p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:367:2: note: in expansion of macro 'if' if (__builtin_constant_p(size) && p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:358:2: note: in expansion of macro 'if' if (p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:356:2: note: in expansion of macro 'if' if (__builtin_constant_p(size) && p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:348:2: note: in expansion of macro 'if' if (p_size < size || q_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:345:3: note: in expansion of macro 'if' if (q_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:343:3: note: in expansion of macro 'if' if (p_size < size) -- In file included from net//netfilter/nfnetlink_queue.c:35:0: include/net/netfilter/nf_conntrack.h:65:22: error: field 'ct_general' has incomplete type struct nf_conntrack ct_general; ^~~~~~~~~~ include/net/netfilter/nf_conntrack.h: In function 'nf_ct_get': >> include/net/netfilter/nf_conntrack.h:154:15: error: 'const struct sk_buff' has no member named '_nfct' *ctinfo = skb->_nfct & NFCT_INFOMASK; ^~ include/net/netfilter/nf_conntrack.h:156:31: error: 'const struct sk_buff' has no member named '_nfct' return (struct nf_conn *)(skb->_nfct & NFCT_PTRMASK); ^~ include/net/netfilter/nf_conntrack.h: In function 'nf_ct_put': include/net/netfilter/nf_conntrack.h:163:2: error: implicit declaration of function 'nf_conntrack_put' [-Werror=implicit-function-declaration] nf_conntrack_put(&ct->ct_general); ^~~~~~~~~~~~~~~~ include/net/netfilter/nf_conntrack.h: In function 'nf_ct_set': >> include/net/netfilter/nf_conntrack.h:327:5: error: 'struct sk_buff' has no member named '_nfct' skb->_nfct = (unsigned long)ct | info; ^~ In file included from include/uapi/linux/stddef.h:1:0, from include/linux/stddef.h:4, from include/uapi/linux/posix_types.h:4, from include/uapi/linux/types.h:13, from include/linux/types.h:5, from include/linux/list.h:4, from include/linux/module.h:9, from net//netfilter/nfnetlink_queue.c:17: net//netfilter/nfnetlink_queue.c: At top level: include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:390:2: note: in expansion of macro 'if' if (p_size == (size_t)-1 && q_size == (size_t)-1) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:380:2: note: in expansion of macro 'if' if (p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:378:2: note: in expansion of macro 'if' if (__builtin_constant_p(size) && p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:369:2: note: in expansion of macro 'if' if (p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:367:2: note: in expansion of macro 'if' if (__builtin_constant_p(size) && p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:358:2: note: in expansion of macro 'if' if (p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:356:2: note: in expansion of macro 'if' if (__builtin_constant_p(size) && p_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:348:2: note: in expansion of macro 'if' if (p_size < size || q_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:345:3: note: in expansion of macro 'if' if (q_size < size) ^~ include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static ______f = { \ ^ include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if' #define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) ) ^~~~~~~~~~ include/linux/string.h:343:3: note: in expansion of macro 'if' if (p_size < size) vim +154 include/net/netfilter/nf_conntrack.h f8eb24a89a Patrick McHardy 2006-11-29 55 ea781f197d Eric Dumazet 2009-03-25 56 struct nf_conn { f330a7fdbe Florian Westphal 2016-08-25 57 /* Usage count in here is 1 for hash table, 1 per skb, b476b72a0f Jesper Dangaard Brouer 2014-03-03 58 * plus 1 for any connection(s) we are `master' for b476b72a0f Jesper Dangaard Brouer 2014-03-03 59 * a9e419dc7b Florian Westphal 2017-01-23 60 * Hint, SKB address this struct and refcnt via skb->_nfct and b476b72a0f Jesper Dangaard Brouer 2014-03-03 61 * helpers nf_conntrack_get() and nf_conntrack_put(). b476b72a0f Jesper Dangaard Brouer 2014-03-03 62 * Helper nf_ct_put() equals nf_conntrack_put() by dec refcnt, b476b72a0f Jesper Dangaard Brouer 2014-03-03 63 * beware nf_ct_get() is different and don't inc refcnt. b476b72a0f Jesper Dangaard Brouer 2014-03-03 64 */ 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 @65 struct nf_conntrack ct_general; 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 66 440f0d5885 Patrick McHardy 2009-06-10 67 spinlock_t lock; b7779d06f9 Jesper Dangaard Brouer 2014-03-03 68 u16 cpu; 440f0d5885 Patrick McHardy 2009-06-10 69 6c8dee9842 Florian Westphal 2016-06-11 70 #ifdef CONFIG_NF_CONNTRACK_ZONES 6c8dee9842 Florian Westphal 2016-06-11 71 struct nf_conntrack_zone zone; 6c8dee9842 Florian Westphal 2016-06-11 72 #endif 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 73 /* XXX should I move this to the tail ? - Y.K */ 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 74 /* These are my tuples; original and reply */ 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 75 struct nf_conntrack_tuple_hash tuplehash[IP_CT_DIR_MAX]; 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 76 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 77 /* Have we seen traffic both ways yet? (bitset) */ 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 78 unsigned long status; 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 79 f330a7fdbe Florian Westphal 2016-08-25 80 /* jiffies32 when this ct is considered dead */ f330a7fdbe Florian Westphal 2016-08-25 81 u32 timeout; 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 82 0c5c9fb551 Eric W. Biederman 2015-03-11 83 possible_net_t ct_net; 0c5c9fb551 Eric W. Biederman 2015-03-11 84 5173bc679d Florian Westphal 2016-11-23 85 #if IS_ENABLED(CONFIG_NF_NAT) 5173bc679d Florian Westphal 2016-11-23 86 struct rhlist_head nat_bysource; 5173bc679d Florian Westphal 2016-11-23 87 #endif c41884ce05 Florian Westphal 2014-11-24 88 /* all members below initialized via memset */ c41884ce05 Florian Westphal 2014-11-24 89 u8 __nfct_init_offset[0]; c41884ce05 Florian Westphal 2014-11-24 90 c41884ce05 Florian Westphal 2014-11-24 91 /* If we were expected by an expectation, this will be it */ c41884ce05 Florian Westphal 2014-11-24 92 struct nf_conn *master; c41884ce05 Florian Westphal 2014-11-24 93 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 94 #if defined(CONFIG_NF_CONNTRACK_MARK) 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 95 u_int32_t mark; 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 96 #endif 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 97 7c9728c393 James Morris 2006-06-09 98 #ifdef CONFIG_NF_CONNTRACK_SECMARK 7c9728c393 James Morris 2006-06-09 99 u_int32_t secmark; 7c9728c393 James Morris 2006-06-09 100 #endif 7c9728c393 James Morris 2006-06-09 101 ecfab2c9fe Yasuyuki Kozakai 2007-07-07 102 /* Extensions */ ecfab2c9fe Yasuyuki Kozakai 2007-07-07 103 struct nf_ct_ext *ext; e5fc9e7a66 Changli Gao 2010-11-12 104 e5fc9e7a66 Changli Gao 2010-11-12 105 /* Storage reserved for other modules, must be the last member */ e5fc9e7a66 Changli Gao 2010-11-12 106 union nf_conntrack_proto proto; 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 107 }; 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 108 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 109 static inline struct nf_conn * 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 110 nf_ct_tuplehash_to_ctrack(const struct nf_conntrack_tuple_hash *hash) 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 111 { 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 112 return container_of(hash, struct nf_conn, 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 113 tuplehash[hash->tuple.dst.dir]); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 114 } 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 115 5e8fbe2ac8 Patrick McHardy 2008-04-14 116 static inline u_int16_t nf_ct_l3num(const struct nf_conn *ct) 5e8fbe2ac8 Patrick McHardy 2008-04-14 117 { 5e8fbe2ac8 Patrick McHardy 2008-04-14 118 return ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num; 5e8fbe2ac8 Patrick McHardy 2008-04-14 119 } 5e8fbe2ac8 Patrick McHardy 2008-04-14 120 5e8fbe2ac8 Patrick McHardy 2008-04-14 121 static inline u_int8_t nf_ct_protonum(const struct nf_conn *ct) 5e8fbe2ac8 Patrick McHardy 2008-04-14 122 { 5e8fbe2ac8 Patrick McHardy 2008-04-14 123 return ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum; 5e8fbe2ac8 Patrick McHardy 2008-04-14 124 } 5e8fbe2ac8 Patrick McHardy 2008-04-14 125 f2f3e38c63 Pablo Neira Ayuso 2009-06-02 126 #define nf_ct_tuple(ct, dir) (&(ct)->tuplehash[dir].tuple) f2f3e38c63 Pablo Neira Ayuso 2009-06-02 127 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 128 /* get master conntrack via master expectation */ 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 129 #define master_ct(conntr) (conntr->master) 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 130 5a1fb391d8 Alexey Dobriyan 2008-10-08 131 extern struct net init_net; 5a1fb391d8 Alexey Dobriyan 2008-10-08 132 5a1fb391d8 Alexey Dobriyan 2008-10-08 133 static inline struct net *nf_ct_net(const struct nf_conn *ct) 5a1fb391d8 Alexey Dobriyan 2008-10-08 134 { c2d9ba9bce Eric Dumazet 2010-06-01 135 return read_pnet(&ct->ct_net); 5a1fb391d8 Alexey Dobriyan 2008-10-08 136 } 5a1fb391d8 Alexey Dobriyan 2008-10-08 137 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 138 /* Alter reply tuple (maybe alter helper). */ 4e77be4637 Joe Perches 2013-09-23 139 void nf_conntrack_alter_reply(struct nf_conn *ct, 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 140 const struct nf_conntrack_tuple *newreply); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 141 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 142 /* Is this tuple taken? (ignoring any belonging to the given 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 143 conntrack). */ 4e77be4637 Joe Perches 2013-09-23 144 int nf_conntrack_tuple_taken(const struct nf_conntrack_tuple *tuple, 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 145 const struct nf_conn *ignored_conntrack); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 146 3032230920 Florian Westphal 2017-01-23 147 #define NFCT_INFOMASK 7UL a9e419dc7b Florian Westphal 2017-01-23 148 #define NFCT_PTRMASK ~(NFCT_INFOMASK) 3032230920 Florian Westphal 2017-01-23 149 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 150 /* Return conntrack_info and tuple hash for given skb. */ 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 151 static inline struct nf_conn * 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 152 nf_ct_get(const struct sk_buff *skb, enum ip_conntrack_info *ctinfo) 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 153 { a9e419dc7b Florian Westphal 2017-01-23 @154 *ctinfo = skb->_nfct & NFCT_INFOMASK; a9e419dc7b Florian Westphal 2017-01-23 155 a9e419dc7b Florian Westphal 2017-01-23 @156 return (struct nf_conn *)(skb->_nfct & NFCT_PTRMASK); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 157 } 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 158 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 159 /* decrement reference count on a conntrack */ 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 160 static inline void nf_ct_put(struct nf_conn *ct) 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 161 { 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 162 NF_CT_ASSERT(ct); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 163 nf_conntrack_put(&ct->ct_general); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 164 } 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 165 b9f78f9fca Pablo Neira Ayuso 2006-03-22 166 /* Protocol module loading */ 4e77be4637 Joe Perches 2013-09-23 167 int nf_ct_l3proto_try_module_get(unsigned short l3proto); 4e77be4637 Joe Perches 2013-09-23 168 void nf_ct_l3proto_module_put(unsigned short l3proto); b9f78f9fca Pablo Neira Ayuso 2006-03-22 169 ecb2421b5d Florian Westphal 2016-11-15 170 /* load module; enable/disable conntrack in this namespace */ ecb2421b5d Florian Westphal 2016-11-15 171 int nf_ct_netns_get(struct net *net, u8 nfproto); ecb2421b5d Florian Westphal 2016-11-15 172 void nf_ct_netns_put(struct net *net, u8 nfproto); ecb2421b5d Florian Westphal 2016-11-15 173 ea781f197d Eric Dumazet 2009-03-25 174 /* ea781f197d Eric Dumazet 2009-03-25 175 * Allocate a hashtable of hlist_head (if nulls == 0), ea781f197d Eric Dumazet 2009-03-25 176 * or hlist_nulls_head (if nulls == 1) ea781f197d Eric Dumazet 2009-03-25 177 */ 4e77be4637 Joe Perches 2013-09-23 178 void *nf_ct_alloc_hashtable(unsigned int *sizep, int nulls); ea781f197d Eric Dumazet 2009-03-25 179 4e77be4637 Joe Perches 2013-09-23 180 void nf_ct_free_hashtable(void *hash, unsigned int size); ac565e5fc1 Patrick McHardy 2007-07-07 181 4e77be4637 Joe Perches 2013-09-23 182 int nf_conntrack_hash_check_insert(struct nf_conn *ct); 02982c27ba Florian Westphal 2013-07-29 183 bool nf_ct_delete(struct nf_conn *ct, u32 pid, int report); c1d10adb4a Pablo Neira Ayuso 2006-01-05 184 4e77be4637 Joe Perches 2013-09-23 185 bool nf_ct_get_tuplepr(const struct sk_buff *skb, unsigned int nhoff, a31f1adc09 Eric W. Biederman 2015-09-18 186 u_int16_t l3num, struct net *net, a31f1adc09 Eric W. Biederman 2015-09-18 187 struct nf_conntrack_tuple *tuple); 4e77be4637 Joe Perches 2013-09-23 188 bool nf_ct_invert_tuplepr(struct nf_conntrack_tuple *inverse, 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 189 const struct nf_conntrack_tuple *orig); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 190 4e77be4637 Joe Perches 2013-09-23 191 void __nf_ct_refresh_acct(struct nf_conn *ct, enum ip_conntrack_info ctinfo, 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 192 const struct sk_buff *skb, 4e77be4637 Joe Perches 2013-09-23 193 unsigned long extra_jiffies, int do_acct); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 194 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 195 /* Refresh conntrack for this many jiffies and do accounting */ 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 196 static inline void nf_ct_refresh_acct(struct nf_conn *ct, 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 197 enum ip_conntrack_info ctinfo, 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 198 const struct sk_buff *skb, 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 199 unsigned long extra_jiffies) 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 200 { 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 201 __nf_ct_refresh_acct(ct, ctinfo, skb, extra_jiffies, 1); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 202 } 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 203 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 204 /* Refresh conntrack for this many jiffies */ 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 205 static inline void nf_ct_refresh(struct nf_conn *ct, 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 206 const struct sk_buff *skb, 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 207 unsigned long extra_jiffies) 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 208 { 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 209 __nf_ct_refresh_acct(ct, 0, skb, extra_jiffies, 0); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 210 } 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 211 718d4ad98e Fabian Hugelshofer 2008-06-09 212 /* kill conntrack and do accounting */ ad66713f5a Florian Westphal 2016-08-25 213 bool nf_ct_kill_acct(struct nf_conn *ct, enum ip_conntrack_info ctinfo, ad66713f5a Florian Westphal 2016-08-25 214 const struct sk_buff *skb); 718d4ad98e Fabian Hugelshofer 2008-06-09 215 718d4ad98e Fabian Hugelshofer 2008-06-09 216 /* kill conntrack without accounting */ 4c88949800 David S. Miller 2008-07-14 217 static inline bool nf_ct_kill(struct nf_conn *ct) 718d4ad98e Fabian Hugelshofer 2008-06-09 218 { ad66713f5a Florian Westphal 2016-08-25 219 return nf_ct_delete(ct, 0, 0); 718d4ad98e Fabian Hugelshofer 2008-06-09 220 } 51091764f2 Patrick McHardy 2008-06-09 221 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 222 /* These are for NAT. Icky. */ 2d89c68ac7 Patrick McHardy 2013-07-28 223 extern s32 (*nf_ct_nat_offset)(const struct nf_conn *ct, f9dd09c7f7 Jozsef Kadlecsik 2009-11-06 224 enum ip_conntrack_dir dir, f9dd09c7f7 Jozsef Kadlecsik 2009-11-06 225 u32 seq); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 226 d171e8b544 Florian Westphal 2017-07-24 227 /* Set all unconfirmed conntrack as dying */ d171e8b544 Florian Westphal 2017-07-24 228 void nf_ct_unconfirmed_destroy(struct net *); d171e8b544 Florian Westphal 2017-07-24 229 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 230 /* Iterate over all conntracks: if iter returns true, it's deleted. */ 9fd6452d67 Florian Westphal 2017-05-21 231 void nf_ct_iterate_cleanup_net(struct net *net, c655bc6896 Florian Westphal 2013-07-29 232 int (*iter)(struct nf_conn *i, void *data), c655bc6896 Florian Westphal 2013-07-29 233 void *data, u32 portid, int report); 308ac9143e Daniel Borkmann 2015-08-08 234 2843fb6998 Florian Westphal 2017-05-21 235 /* also set unconfirmed conntracks as dying. Only use in module exit path. */ 2843fb6998 Florian Westphal 2017-05-21 236 void nf_ct_iterate_destroy(int (*iter)(struct nf_conn *i, void *data), 2843fb6998 Florian Westphal 2017-05-21 237 void *data); 2843fb6998 Florian Westphal 2017-05-21 238 308ac9143e Daniel Borkmann 2015-08-08 239 struct nf_conntrack_zone; 308ac9143e Daniel Borkmann 2015-08-08 240 4e77be4637 Joe Perches 2013-09-23 241 void nf_conntrack_free(struct nf_conn *ct); 308ac9143e Daniel Borkmann 2015-08-08 242 struct nf_conn *nf_conntrack_alloc(struct net *net, 308ac9143e Daniel Borkmann 2015-08-08 243 const struct nf_conntrack_zone *zone, 5a1fb391d8 Alexey Dobriyan 2008-10-08 244 const struct nf_conntrack_tuple *orig, b891c5a831 Pablo Neira Ayuso 2008-07-08 245 const struct nf_conntrack_tuple *repl, b891c5a831 Pablo Neira Ayuso 2008-07-08 246 gfp_t gfp); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 247 b2a15a604d Patrick McHardy 2010-02-03 248 static inline int nf_ct_is_template(const struct nf_conn *ct) b2a15a604d Patrick McHardy 2010-02-03 249 { b2a15a604d Patrick McHardy 2010-02-03 250 return test_bit(IPS_TEMPLATE_BIT, &ct->status); b2a15a604d Patrick McHardy 2010-02-03 251 } b2a15a604d Patrick McHardy 2010-02-03 252 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 253 /* It's confirmed if it is, or has been in the hash table. */ d51ed8367b Florian Westphal 2016-07-08 254 static inline int nf_ct_is_confirmed(const struct nf_conn *ct) 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 255 { 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 256 return test_bit(IPS_CONFIRMED_BIT, &ct->status); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 257 } 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 258 d51ed8367b Florian Westphal 2016-07-08 259 static inline int nf_ct_is_dying(const struct nf_conn *ct) 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 260 { 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 261 return test_bit(IPS_DYING_BIT, &ct->status); 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 262 } 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 263 42c1edd345 Julian Anastasov 2011-06-16 264 /* Packet is received from loopback */ 42c1edd345 Julian Anastasov 2011-06-16 265 static inline bool nf_is_loopback_packet(const struct sk_buff *skb) 42c1edd345 Julian Anastasov 2011-06-16 266 { 42c1edd345 Julian Anastasov 2011-06-16 267 return skb->dev && skb->skb_iif && skb->dev->flags & IFF_LOOPBACK; 42c1edd345 Julian Anastasov 2011-06-16 268 } 42c1edd345 Julian Anastasov 2011-06-16 269 f330a7fdbe Florian Westphal 2016-08-25 270 #define nfct_time_stamp ((u32)(jiffies)) f330a7fdbe Florian Westphal 2016-08-25 271 c8607e0200 Florian Westphal 2016-07-06 272 /* jiffies until ct expires, 0 if already expired */ c8607e0200 Florian Westphal 2016-07-06 273 static inline unsigned long nf_ct_expires(const struct nf_conn *ct) c8607e0200 Florian Westphal 2016-07-06 274 { f330a7fdbe Florian Westphal 2016-08-25 275 s32 timeout = ct->timeout - nfct_time_stamp; c8607e0200 Florian Westphal 2016-07-06 276 c8607e0200 Florian Westphal 2016-07-06 277 return timeout > 0 ? timeout : 0; c8607e0200 Florian Westphal 2016-07-06 278 } c8607e0200 Florian Westphal 2016-07-06 279 f330a7fdbe Florian Westphal 2016-08-25 280 static inline bool nf_ct_is_expired(const struct nf_conn *ct) f330a7fdbe Florian Westphal 2016-08-25 281 { f330a7fdbe Florian Westphal 2016-08-25 282 return (__s32)(ct->timeout - nfct_time_stamp) <= 0; f330a7fdbe Florian Westphal 2016-08-25 283 } f330a7fdbe Florian Westphal 2016-08-25 284 f330a7fdbe Florian Westphal 2016-08-25 285 /* use after obtaining a reference count */ f330a7fdbe Florian Westphal 2016-08-25 286 static inline bool nf_ct_should_gc(const struct nf_conn *ct) f330a7fdbe Florian Westphal 2016-08-25 287 { f330a7fdbe Florian Westphal 2016-08-25 288 return nf_ct_is_expired(ct) && nf_ct_is_confirmed(ct) && f330a7fdbe Florian Westphal 2016-08-25 289 !nf_ct_is_dying(ct); f330a7fdbe Florian Westphal 2016-08-25 290 } f330a7fdbe Florian Westphal 2016-08-25 291 34641c6d00 Paul Gortmaker 2011-08-29 292 struct kernel_param; 34641c6d00 Paul Gortmaker 2011-08-29 293 4e77be4637 Joe Perches 2013-09-23 294 int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp); 3183ab8997 Florian Westphal 2016-06-22 295 int nf_conntrack_hash_resize(unsigned int hashsize); 92e47ba883 Liping Zhang 2016-08-13 296 92e47ba883 Liping Zhang 2016-08-13 297 extern struct hlist_nulls_head *nf_conntrack_hash; 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 298 extern unsigned int nf_conntrack_htable_size; 92e47ba883 Liping Zhang 2016-08-13 299 extern seqcount_t nf_conntrack_generation; e478075c6f Hagen Paul Pfeifer 2009-02-20 300 extern unsigned int nf_conntrack_max; 9fb9cbb108 Yasuyuki Kozakai 2005-11-09 301 92e47ba883 Liping Zhang 2016-08-13 302 /* must be called with rcu read lock held */ 92e47ba883 Liping Zhang 2016-08-13 303 static inline void 92e47ba883 Liping Zhang 2016-08-13 304 nf_conntrack_get_ht(struct hlist_nulls_head **hash, unsigned int *hsize) 92e47ba883 Liping Zhang 2016-08-13 305 { 92e47ba883 Liping Zhang 2016-08-13 306 struct hlist_nulls_head *hptr; 92e47ba883 Liping Zhang 2016-08-13 307 unsigned int sequence, hsz; 92e47ba883 Liping Zhang 2016-08-13 308 92e47ba883 Liping Zhang 2016-08-13 309 do { 92e47ba883 Liping Zhang 2016-08-13 310 sequence = read_seqcount_begin(&nf_conntrack_generation); 92e47ba883 Liping Zhang 2016-08-13 311 hsz = nf_conntrack_htable_size; 92e47ba883 Liping Zhang 2016-08-13 312 hptr = nf_conntrack_hash; 92e47ba883 Liping Zhang 2016-08-13 313 } while (read_seqcount_retry(&nf_conntrack_generation, sequence)); 92e47ba883 Liping Zhang 2016-08-13 314 92e47ba883 Liping Zhang 2016-08-13 315 *hash = hptr; 92e47ba883 Liping Zhang 2016-08-13 316 *hsize = hsz; 92e47ba883 Liping Zhang 2016-08-13 317 } 92e47ba883 Liping Zhang 2016-08-13 318 308ac9143e Daniel Borkmann 2015-08-08 319 struct nf_conn *nf_ct_tmpl_alloc(struct net *net, 308ac9143e Daniel Borkmann 2015-08-08 320 const struct nf_conntrack_zone *zone, 308ac9143e Daniel Borkmann 2015-08-08 321 gfp_t flags); 9cf94eab8b Daniel Borkmann 2015-08-31 322 void nf_ct_tmpl_free(struct nf_conn *tmpl); e53376bef2 Pablo Neira Ayuso 2014-02-03 323 c74454fadd Florian Westphal 2017-01-23 324 static inline void c74454fadd Florian Westphal 2017-01-23 325 nf_ct_set(struct sk_buff *skb, struct nf_conn *ct, enum ip_conntrack_info info) c74454fadd Florian Westphal 2017-01-23 326 { a9e419dc7b Florian Westphal 2017-01-23 @327 skb->_nfct = (unsigned long)ct | info; c74454fadd Florian Westphal 2017-01-23 328 } c74454fadd Florian Westphal 2017-01-23 329 :::::: The code at line 154 was first introduced by commit :::::: a9e419dc7be6997409dca6d1b9daf3cc7046902f netfilter: merge ctinfo into nfct pointer storage area :::::: TO: Florian Westphal <fw@xxxxxxxxx> :::::: CC: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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