Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 19 insertions, 18 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 3e4b33e36602..cda30ea354a2 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -60,6 +60,9 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo);
  */
 #define MAX_TCP_WINDOW          32767U
 
+/* Offer an initial receive window of 10 mss. */
+#define TCP_DEFAULT_INIT_RCVWND 10
+
 /* Minimal accepted MSS. It is (60+60+8) - (20+20). */
 #define TCP_MIN_MSS             88U
 
@@ -100,12 +103,6 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo);
 #define TCP_SYNACK_RETRIES 5    /* number of times to retry passive opening a
                                  * connection: ~180sec is RFC minimum   */
 
-
-#define TCP_ORPHAN_RETRIES 7    /* number of times to retry on an orphaned
-                                 * socket. 7 is ~50sec-16min.
-                                 */
-
-
 #define TCP_TIMEWAIT_LEN (60*HZ) /* how long to wait to destroy TIME-WAIT
                                   * state, about 60 seconds     */
 #define TCP_FIN_TIMEOUT TCP_TIMEWAIT_LEN
@@ -199,6 +196,9 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo);
 /* TCP thin-stream limits */
 #define TCP_THIN_LINEAR_RETRIES 6       /* After 6 linear retries, do exp. backoff */
 
+/* TCP initial congestion window as per draft-hkchu-tcpm-initcwnd-01 */
+#define TCP_INIT_CWND           10
+
 extern struct inet_timewait_death_row tcp_death_row;
 
 /* sysctl variables for tcp */
@@ -224,7 +224,7 @@ extern int sysctl_tcp_fack;
 extern int sysctl_tcp_reordering;
 extern int sysctl_tcp_ecn;
 extern int sysctl_tcp_dsack;
-extern int sysctl_tcp_mem[3];
+extern long sysctl_tcp_mem[3];
 extern int sysctl_tcp_wmem[3];
 extern int sysctl_tcp_rmem[3];
 extern int sysctl_tcp_app_win;
@@ -247,7 +247,7 @@ extern int sysctl_tcp_cookie_size;
 extern int sysctl_tcp_thin_linear_timeouts;
 extern int sysctl_tcp_thin_dupack;
 
-extern atomic_t tcp_memory_allocated;
+extern atomic_long_t tcp_memory_allocated;
 extern struct percpu_counter tcp_sockets_allocated;
 extern int tcp_memory_pressure;
 
@@ -280,7 +280,7 @@ static inline bool tcp_too_many_orphans(struct sock *sk, int shift)
         }
 
         if (sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
-            atomic_read(&tcp_memory_allocated) > sysctl_tcp_mem[2])
+            atomic_long_read(&tcp_memory_allocated) > sysctl_tcp_mem[2])
                 return true;
         return false;
 }
@@ -312,7 +312,8 @@ extern void tcp_shutdown (struct sock *sk, int how);
 
 extern int tcp_v4_rcv(struct sk_buff *skb);
 
-extern int tcp_v4_remember_stamp(struct sock *sk);
+extern struct inet_peer *tcp_v4_get_peer(struct sock *sk, bool *release_it);
+extern void *tcp_v4_tw_get_peer(struct sock *sk);
 extern int tcp_v4_tw_remember_stamp(struct inet_timewait_sock *tw);
 extern int tcp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                        size_t size);
@@ -346,8 +347,6 @@ static inline void tcp_dec_quickack_mode(struct sock *sk,
         }
 }
 
-extern void tcp_enter_quickack_mode(struct sock *sk);
-
 #define TCP_ECN_OK              1
 #define TCP_ECN_QUEUE_CWR       2
 #define TCP_ECN_DEMAND_CWR      4
@@ -1036,7 +1035,13 @@ static inline int tcp_paws_check(const struct tcp_options_received *rx_opt,
                 return 1;
         if (unlikely(get_seconds() >= rx_opt->ts_recent_stamp + TCP_PAWS_24DAYS))
                 return 1;
-
+        /*
+         * Some OSes send SYN and SYNACK messages with tsval=0 tsecr=0,
+         * then following tcp messages have valid values. Ignore 0 value,
+         * or else 'negative' tsval might forbid us to accept their packets.
+         */
+        if (!rx_opt->ts_recent)
+                return 1;
         return 0;
 }
 
@@ -1063,8 +1068,6 @@ static inline int tcp_paws_reject(const struct tcp_options_received *rx_opt,
         return 1;
 }
 
-#define TCP_CHECK_TIMER(sk) do { } while (0)
-
 static inline void tcp_mib_init(struct net *net)
 {
         /* See RFC 2012 */
@@ -1150,8 +1153,6 @@ struct tcp_md5sig_pool {
         union tcp_md5sum_block  md5_blk;
 };
 
-#define TCP_MD5SIG_MAXKEYS      (~(u32)0)       /* really?! */
-
 /* - functions */
 extern int tcp_v4_md5_hash_skb(char *md5_hash, struct tcp_md5sig_key *key,
                                struct sock *sk, struct request_sock *req,
@@ -1395,7 +1396,7 @@ extern struct request_sock_ops tcp6_request_sock_ops;
 extern void tcp_v4_destroy_sock(struct sock *sk);
 
 extern int tcp_v4_gso_send_check(struct sk_buff *skb);
-extern struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features);
+extern struct sk_buff *tcp_tso_segment(struct sk_buff *skb, u32 features);
 extern struct sk_buff **tcp_gro_receive(struct sk_buff **head,
                                         struct sk_buff *skb);
 extern struct sk_buff **tcp4_gro_receive(struct sk_buff **head,