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[KERNEL] Temporally drop fragmented packets

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git-svn-id: svn://kolibrios.org@9809 a494cfbc-eb01-0410-851d-a64ba20cac60
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Magomed Kostoev (mkostoevr) 2022-05-08 14:46:34 +00:00
parent 7805691d08
commit 908aa98953
1 changed files with 10 additions and 1 deletions
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11
kernel/trunk/network/IPv4.inc
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@ -508,7 +508,7 @@ ipv4_input:
je .destroy_slot_pop ; If we dont have enough space to allocate the buffer, discard all packets in slot je .destroy_slot_pop ; If we dont have enough space to allocate the buffer, discard all packets in slot
mov edx, [esp+4] ; Get pointer to first fragment entry back in edx mov edx, [esp+4] ; Get pointer to first fragment entry back in edx
; FIXME: We should create NET_BUFF in eax instead of a rugular buffer with IP packet ; FIXME: Allocate NET_BUFF here instead of raw IP packet buffer
.rebuild_packet_loop: .rebuild_packet_loop:
movzx ecx, [edx + sizeof.NET_BUFF + sizeof.IPv4_FRAGMENT_entry + IPv4_header.FlagsAndFragmentOffset] ; Calculate the fragment offset movzx ecx, [edx + sizeof.NET_BUFF + sizeof.IPv4_FRAGMENT_entry + IPv4_header.FlagsAndFragmentOffset] ; Calculate the fragment offset
@ -562,6 +562,15 @@ ipv4_input:
xchg cl, ch xchg cl, ch
push edx ; Push pointer to the new buffer with full IP packet push edx ; Push pointer to the new buffer with full IP packet
mov edi, [edi_saved] mov edi, [edi_saved]
; FIXME: Remove this block once allocated network buffers handling is implemented.
if 1
DEBUGF DEBUG_NETWORK_ERROR, "IPv4_input: fragmented packet of size %d is dropped\n", ecx
call kernel_free ; Ptr to buffer is on the stack already
inc [IPv4_packets_dumped + edi]
ret
end if
jmp .handle_it ; edx = buf ptr, ecx = size, [esp] buf ptr, ebx=device ptr jmp .handle_it ; edx = buf ptr, ecx = size, [esp] buf ptr, ebx=device ptr
.destroy_slot_pop: .destroy_slot_pop: