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-rw-r--r--include/linux/tcp.h5
-rw-r--r--include/net/tcp.h4
2 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 7fee8a4df931..3ba8b074612f 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -103,6 +103,7 @@ enum {
103#define TCP_CONGESTION 13 /* Congestion control algorithm */ 103#define TCP_CONGESTION 13 /* Congestion control algorithm */
104#define TCP_MD5SIG 14 /* TCP MD5 Signature (RFC2385) */ 104#define TCP_MD5SIG 14 /* TCP MD5 Signature (RFC2385) */
105#define TCP_COOKIE_TRANSACTIONS 15 /* TCP Cookie Transactions */ 105#define TCP_COOKIE_TRANSACTIONS 15 /* TCP Cookie Transactions */
106#define TCP_THIN_LINEAR_TIMEOUTS 16 /* Use linear timeouts for thin streams*/
106 107
107/* for TCP_INFO socket option */ 108/* for TCP_INFO socket option */
108#define TCPI_OPT_TIMESTAMPS 1 109#define TCPI_OPT_TIMESTAMPS 1
@@ -340,7 +341,9 @@ struct tcp_sock {
340 u32 frto_highmark; /* snd_nxt when RTO occurred */ 341 u32 frto_highmark; /* snd_nxt when RTO occurred */
341 u16 advmss; /* Advertised MSS */ 342 u16 advmss; /* Advertised MSS */
342 u8 frto_counter; /* Number of new acks after RTO */ 343 u8 frto_counter; /* Number of new acks after RTO */
343 u8 nonagle; /* Disable Nagle algorithm? */ 344 u8 nonagle : 4,/* Disable Nagle algorithm? */
345 thin_lto : 1,/* Use linear timeouts for thin streams */
346 unused : 3;
344 347
345/* RTT measurement */ 348/* RTT measurement */
346 u32 srtt; /* smoothed round trip time << 3 */ 349 u32 srtt; /* smoothed round trip time << 3 */
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 0bdc3f640247..6278fc734abd 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -196,6 +196,9 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo);
196#define TCP_NAGLE_CORK 2 /* Socket is corked */ 196#define TCP_NAGLE_CORK 2 /* Socket is corked */
197#define TCP_NAGLE_PUSH 4 /* Cork is overridden for already queued data */ 197#define TCP_NAGLE_PUSH 4 /* Cork is overridden for already queued data */
198 198
199/* TCP thin-stream limits */
200#define TCP_THIN_LINEAR_RETRIES 6 /* After 6 linear retries, do exp. backoff */
201
199extern struct inet_timewait_death_row tcp_death_row; 202extern struct inet_timewait_death_row tcp_death_row;
200 203
201/* sysctl variables for tcp */ 204/* sysctl variables for tcp */
@@ -241,6 +244,7 @@ extern int sysctl_tcp_workaround_signed_windows;
241extern int sysctl_tcp_slow_start_after_idle; 244extern int sysctl_tcp_slow_start_after_idle;
242extern int sysctl_tcp_max_ssthresh; 245extern int sysctl_tcp_max_ssthresh;
243extern int sysctl_tcp_cookie_size; 246extern int sysctl_tcp_cookie_size;
247extern int sysctl_tcp_thin_linear_timeouts;
244 248
245extern atomic_t tcp_memory_allocated; 249extern atomic_t tcp_memory_allocated;
246extern struct percpu_counter tcp_sockets_allocated; 250extern struct percpu_counter tcp_sockets_allocated;