WLAN subsystem: Sysctl support for key TCP/IP parameters
It has been observed that default values for some of key tcp/ip
parameters are affecting the tput/performance of the system. Hence
extending configuration capabilities to TCP/Ip stack through
sysctl interface.
Change-Id: I0c99d5b50cbe0d6496e40d391eacc12b0c62dbed
CRs-Fixed: 507581
Signed-off-by: Mahesh A Saptasagar <msapta@codeaurora.org>
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 50660b3..4ab18e0 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -130,6 +130,8 @@
* valid RTT sample has been acquired,
* most likely due to retrans in 3WHS.
*/
+/* Number of full MSS to receive before Acking RFC2581 */
+#define TCP_DELACK_SEG 1
#define TCP_RESOURCE_PROBE_INTERVAL ((unsigned)(HZ/2U)) /* Maximal interval between probes
* for local resources.
@@ -254,6 +256,10 @@
extern int sysctl_tcp_thin_dupack;
extern atomic_long_t tcp_memory_allocated;
+
+/* sysctl variables for controlling various tcp parameters */
+extern int sysctl_tcp_delack_seg;
+extern int sysctl_tcp_use_userconfig;
extern struct percpu_counter tcp_sockets_allocated;
extern int tcp_memory_pressure;
@@ -345,6 +351,11 @@
extern ssize_t tcp_splice_read(struct socket *sk, loff_t *ppos,
struct pipe_inode_info *pipe, size_t len,
unsigned int flags);
+/* sysctl master controller */
+extern int tcp_use_userconfig_sysctl_handler(struct ctl_table *, int,
+ void __user *, size_t *, loff_t *);
+extern int tcp_proc_delayed_ack_control(struct ctl_table *, int,
+ void __user *, size_t *, loff_t *);
static inline void tcp_dec_quickack_mode(struct sock *sk,
const unsigned int pkts)