diff options
Diffstat (limited to 'options.h')
| -rw-r--r-- | options.h | 31 |
1 files changed, 24 insertions, 7 deletions
@@ -216,6 +216,20 @@ etc) slower (perhaps by 50%). Recommended for most small systems. */ * shell/sftp session etc. */ /* #define LOG_COMMANDS */ +/* Window size limits. These tend to be a trade-off between memory + usage and network performance: */ +/* Size of the network receive window. This amount of memory is allocated + as a per-channel receive buffer. Increasing this value can make a + significant difference to network performance. */ +#define RECV_MAX_WINDOW 8192 +/* Maximum size of a received SSH data packet - this _MUST_ be >= 32768 + in order to interoperate with other implementations */ +#define RECV_MAX_PAYLOAD_LEN 32768 +/* Maximum size of a transmitted data packet - this can be any value, + though increasing it may not make a significant difference. */ +#define TRANS_MAX_PAYLOAD_LEN 16384 + + /******************************************************************* * You shouldn't edit below here unless you know you need to. *******************************************************************/ @@ -317,16 +331,19 @@ etc) slower (perhaps by 50%). Recommended for most small systems. */ #define MAX_PROPOSED_ALGO 20 /* size/count limits */ - -#define MAX_PACKET_LEN 35000 #define MIN_PACKET_LEN 16 -#define MAX_PAYLOAD_LEN 32768 -#define MAX_TRANS_PAYLOAD_LEN 32768 -#define MAX_TRANS_PACKET_LEN (MAX_TRANS_PAYLOAD_LEN+50) +#define RECV_MAX_PACKET_LEN (MAX(35000, ((RECV_MAX_PAYLOAD_LEN)+100))) + +/* for channel code */ +#define TRANS_MAX_WINDOW 500000000 /* 500MB is sufficient, stopping overflow */ +#define TRANS_MAX_WIN_INCR 500000000 /* overflow prevention */ + +#define RECV_WINDOWEXTEND (RECV_MAX_WINDOW / 3) /* We send a "window extend" every + RECV_WINDOWEXTEND bytes */ -#define MAX_TRANS_WINDOW 500000000 /* 500MB is sufficient, stopping overflow */ -#define MAX_TRANS_WIN_INCR 500000000 /* overflow prevention */ +#define MAX_CHANNELS 100 /* simple mem restriction, includes each tcp/x11 + connection, so can't be _too_ small */ #define MAX_STRING_LEN 1400 /* ~= MAX_PROPOSED_ALGO * MAX_NAME_LEN, also is the max length for a password etc */ |