diff --git a/kernel/branches/net/network/tcp_input.inc b/kernel/branches/net/network/tcp_input.inc index d9a669cccc..9c44a94feb 100644 --- a/kernel/branches/net/network/tcp_input.inc +++ b/kernel/branches/net/network/tcp_input.inc @@ -23,7 +23,7 @@ $Revision$ ; Add a segment to the incoming TCP queue ; ; IN: [esp] = ptr to buffer -; [esp+4] = buffer size +; [esp+4] = buffer size (dont care) ; ebx = ptr to device struct ; ecx = segment size ; esi = ptr to TCP segment @@ -36,14 +36,16 @@ $Revision$ align 4 TCP_input: +; record the current time + mov eax, [timer_ticks] ; in 1/100 seconds + mov [esp + 4], eax + push ebx ecx esi edi ; mind the order mov esi, esp pushf cli - add_to_queue TCP_queue, TCP_QUEUE_SIZE, sizeof.TCP_queue_entry, .fail - popf add esp, sizeof.TCP_queue_entry @@ -78,7 +80,7 @@ TCP_process_input: ;----------------------------------------------------------------- ; ; IN: [esp] = ptr to buffer -; [esp+4] = buffer size - actually, we dont care +; [esp+4] = timestamp when segment was received ; ebx = ptr to device struct ; ecx = segment size ; esi = ptr to TCP segment @@ -90,11 +92,7 @@ TCP_process_input: DEBUGF 1,"TCP_input: size=%u time=%d\n", ecx, [timer_ticks] -; First, record the current time - mov eax, [timer_ticks] ; in 1/100 seconds - mov [esp + 4], eax ; from now on, we'll call this TCP_now - -; then, re-calculate the checksum (if not already done by hw) +; re-calculate the checksum (if not already done by hw) ; test [ebx + NET_DEVICE.hwacc], HWACC_TCP_IPv4_IN ; jnz .checksum_ok @@ -247,7 +245,7 @@ TCP_process_input: ;-------------------- ; Process TCP options - push ecx + push ecx ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; movzx ecx, [edx + TCP_header.DataOffset] cmp ecx, sizeof.TCP_header ; Does header contain any options? @@ -366,8 +364,11 @@ TCP_process_input: mov eax, [esp+4+4] ; tcp_now sub eax, [ebx + TCP_SOCKET.ts_recent_age] + + pop ecx cmp eax, TCP_PAWS_IDLE jle .drop_after_ack ; TODO: update stats + push ecx mov [ebx + TCP_SOCKET.ts_recent], 0 ; timestamp was invalid, fix it. .no_paws: @@ -375,7 +376,7 @@ TCP_process_input: .no_options: - pop ecx + pop ecx;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;----------------------------------------------------------------------- ; Time to do some header prediction (Original Principle by Van Jacobson) @@ -1537,6 +1538,7 @@ align 4 .need_output: DEBUGF 1,"TCP_input: need output\n" + call TCP_output .dumpit: