diff options
| -rw-r--r-- | src/include/ipxe/tcp.h | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/include/ipxe/tcp.h b/src/include/ipxe/tcp.h index f5508fe2b..1f65a3d92 100644 --- a/src/include/ipxe/tcp.h +++ b/src/include/ipxe/tcp.h @@ -339,11 +339,17 @@ struct tcp_options { * a) Gigabit LAN: expected bandwidth 125MB/s, typical RTT 0.5ms, * minimum required window 64kB * - * b) Home Internet connection: expected bandwidth 10MB/s, typical - * RTT 25ms, minimum required window 256kB + * b) 10-Gigabit LAN: expected bandwidth 1250MB/s, typical RTT + * 0.5ms, minimum required window 640kB * - * c) WAN: expected bandwidth 2MB/s, typical RTT 100ms, minimum - * required window 200kB. + * c) Home Internet connection: expected bandwidth 50MB/s, typical + * RTT 25ms, minimum required window 1280kB + * + * d) International WAN: expected bandwidth 50MB/s, typical RTT + * 25ms, minimum required window 1280kB + * + * e) Intercontinental WAN: expected bandwidth 5MB/s, typical RTT + * 250ms, minimum required window 1280kB. * * The maximum possible value for the TCP window size is 1GB (using * the maximum window scale of 2**14). However, it is advisable to @@ -351,9 +357,9 @@ struct tcp_options { * bandwidth), since in the event of a lost packet the window size * represents the maximum amount that will need to be retransmitted. * - * We therefore choose a maximum window size of 256kB. + * We therefore choose a (rounded up) maximum window size of 2048kB. */ -#define TCP_MAX_WINDOW_SIZE ( 256 * 1024 ) +#define TCP_MAX_WINDOW_SIZE ( 2048 * 1024 ) /** * Path MTU |