XPRT_ADJUST_CWND(9) Linux Networking XPRT_ADJUST_CWND(9)NAME
xprt_adjust_cwnd - adjust transport congestion window
SYNOPSIS
void xprt_adjust_cwnd(struct rpc_task * task, int result);
ARGUMENTS
task
recently completed RPC request used to adjust window
result
result code of completed RPC request
DESCRIPTION
We use a time-smoothed congestion estimator to avoid heavy oscillation.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 XPRT_ADJUST_CWND(9)
Check Out this Related Man Page
TCP_CONGCTL(9) BSD Kernel Developer's Manual TCP_CONGCTL(9)NAME
tcp_congctl -- TCP congestion control API
SYNOPSIS
#include <netinet/tcp_congctl.h>
int
tcp_congctl_register(const char *, struct tcp_congctl *);
int
tcp_congctl_unregister(const char *);
DESCRIPTION
The tcp_congctrl API is used to add or remove TCP congestion control algorithms on-the-fly and to modularize them. It includes basically two
functions:
tcp_congctl_register(const char *, struct tcp_congctl *)
Registers a new congestion control algorithm. The struct tcp_congctl argument must contain a list of callbacks like the following:
struct tcp_congctl {
int (*fast_retransmit)(struct tcpcb *,
struct tcphdr *);
void (*slow_retransmit)(struct tcpcb *);
void (*fast_retransmit_newack)(struct tcpcb *,
struct tcphdr *);
void (*newack)(struct tcpcb *,
struct tcphdr *);
void (*cong_exp)(struct tcpcb *);
};
tcp_congctl_unregister(const char *)
If found, unregister the selected TCP congestion control algorithm.
RETURN VALUES
tcp_congctl_register() and tcp_congctl_unregister() both return 0 when there is no error. If the name is already registered,
tcp_congctl_register() will return EEXIST. tcp_congctl_unregister() can return ENOENT if there is no congestion control algorithm by that
name and can return EBUSY if the matched algorithm is being used by userspace applications.
FILES
Implementation is in sys/netinet/tcp_congctl.c and the interface is in sys/netinet/tcp_congctl.h.
SEE ALSO tcp(4)BSD October 15, 2006 BSD
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