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-rw-r--r--include/net/tcp.h16
1 files changed, 12 insertions, 4 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 0118ea999f6..42c29bfbcee 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -273,6 +273,14 @@ static inline int between(__u32 seq1, __u32 seq2, __u32 seq3)
273 return seq3 - seq2 >= seq1 - seq2; 273 return seq3 - seq2 >= seq1 - seq2;
274} 274}
275 275
276static inline bool tcp_out_of_memory(struct sock *sk)
277{
278 if (sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
279 sk_memory_allocated(sk) > sk_prot_mem_limits(sk, 2))
280 return true;
281 return false;
282}
283
276static inline bool tcp_too_many_orphans(struct sock *sk, int shift) 284static inline bool tcp_too_many_orphans(struct sock *sk, int shift)
277{ 285{
278 struct percpu_counter *ocp = sk->sk_prot->orphan_count; 286 struct percpu_counter *ocp = sk->sk_prot->orphan_count;
@@ -283,13 +291,11 @@ static inline bool tcp_too_many_orphans(struct sock *sk, int shift)
283 if (orphans << shift > sysctl_tcp_max_orphans) 291 if (orphans << shift > sysctl_tcp_max_orphans)
284 return true; 292 return true;
285 } 293 }
286
287 if (sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
288 sk_memory_allocated(sk) > sk_prot_mem_limits(sk, 2))
289 return true;
290 return false; 294 return false;
291} 295}
292 296
297extern bool tcp_check_oom(struct sock *sk, int shift);
298
293/* syncookies: remember time of last synqueue overflow */ 299/* syncookies: remember time of last synqueue overflow */
294static inline void tcp_synq_overflow(struct sock *sk) 300static inline void tcp_synq_overflow(struct sock *sk)
295{ 301{
@@ -311,6 +317,8 @@ extern struct proto tcp_prot;
311#define TCP_ADD_STATS_USER(net, field, val) SNMP_ADD_STATS_USER((net)->mib.tcp_statistics, field, val) 317#define TCP_ADD_STATS_USER(net, field, val) SNMP_ADD_STATS_USER((net)->mib.tcp_statistics, field, val)
312#define TCP_ADD_STATS(net, field, val) SNMP_ADD_STATS((net)->mib.tcp_statistics, field, val) 318#define TCP_ADD_STATS(net, field, val) SNMP_ADD_STATS((net)->mib.tcp_statistics, field, val)
313 319
320extern void tcp_init_mem(struct net *net);
321
314extern void tcp_v4_err(struct sk_buff *skb, u32); 322extern void tcp_v4_err(struct sk_buff *skb, u32);
315 323
316extern void tcp_shutdown (struct sock *sk, int how); 324extern void tcp_shutdown (struct sock *sk, int how);