1The following parameters should be tunable at compile time. Some of them
2exist as sysctls too.
3
4This is far from complete
5
6Item			Description
7----------------------------------------------------------------------------
8MAX_LINKS		Maximum number of netlink minor devices. (1-32)
9RIF_TABLE_SIZE		Token ring RIF cache size (tunable)
10AARP_HASH_SIZE		Size of Appletalk hash table (tunable)
11AX25_DEF_T1		AX.25 parameters. These are all tunable via
12AX25_DEF_T2		SIOCAX25SETPARMS
13AX25_DEF_T3		T1-T3,N2 have the meanings in the specification
14AX25_DEF_N2
15AX25_DEF_AXDEFMODE	8 = normal 128 is PE1CHL extended
16AX25_DEF_IPDEFMODE	'D' - datagram  'V' - virtual connection
17AX25_DEF_BACKOFF	'E'xponential 'L'inear
18AX25_DEF_NETROM		Allow netrom 1=Y
19AX25_DF_TEXT		Allow PID=Text 1=Y
20AX25_DEF_WINDOW		Window for normal mode
21AX25_DEF_EWINDOW	Window for PE1CHL mode
22AX25_DEF_DIGI		1 for inband 2 for cross band 3 for both
23AX25_DEF_CONMODE	Allow connected modes 1=Yes
24AX25_ROUTE_MAX		AX.25 route cache size - no currently tunable
25Unnamed (16)		Number of protocol hash slots (tunable)
26DEV_NUMBUFFS		Number of priority levels (not easily tunable)
27Unnamed (300)		Maximum packet backlog queue (tunable)
28MAX_IOVEC		Maximum number of iovecs in a message (tunable)
29MIN_WINDOW		Offered minimum window (tunable)
30MAX_WINDOW		Offered maximum window (tunable)
31MAX_HEADER		Largest physical header (tunable)
32MAX_ADDR_LEN		Largest physical address (tunable)
33SOCK_ARRAY_SIZE		IP socket array hash size (tunable)
34IP_MAX_MEMBERSHIPS	Largest number of groups per socket (BSD style) (tunable)
3516			Hard coded constant for amount of room allowed for
36			cache align and faster forwarding (tunable)
37IP_FRAG_TIME		Time we hold a fragment for. (tunable)
38PORT_MASQ_BEGIN		First port reserved for masquerade (tunable)
39PORT_MASQ_END		Last port used for masquerade	(tunable)
40MASQUERADE_EXPIRE_TCP_FIN	Time we keep a masquerade for after a FIN
41MASQUERADE_EXPIRE_UDP	Time we keep a UDP masquerade for (tunable)
42MAXVIFS			Maximum mrouted vifs (1-32)
43MFC_LINES		Lines in the multicast router cache (tunable)
44
45NetROM parameters are tunable via an ioctl passing a struct
46
474000			Size a Unix domain socket malloc falls back to 
48			(tunable) should be 8K - a bit for 8K machines like
49			the ALPHA
50