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ARP will now wait for reply/timeout if it needed to send an ARP request packet.

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git-svn-id: svn://kolibrios.org@3203 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr 2013-01-28 13:11:35 +00:00
parent edce644b61
commit 2d54529003
1 changed files with 25 additions and 17 deletions
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42
kernel/branches/net/network/ARP.inc
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@ -363,6 +363,7 @@ ARP_output_request:
;
; IN: esi = ptr to entry (can easily be made on the stack)
; OUT: eax = entry #, -1 on error
; edi = ptr to newly created entry
;
;----------------------------------------------------------------- ; TODO: use a mutex
align 4
@ -398,6 +399,7 @@ ARP_add_entry:
mov ecx, sizeof.ARP_entry/2
rep movsw
inc [NumARP]
sub edi, sizeof.ARP_entry
DEBUGF 1,"entry=%u\n", eax
ret
@ -498,36 +500,42 @@ ARP_IP_to_MAC:
pushd eax ; ip
mov esi, esp
call ARP_add_entry
add esp, sizeof.ARP_entry
add esp, sizeof.ARP_entry ; clear the entry from stack
cmp eax, -1
cmp eax, -1 ; did ARP_add_entry fail?
je .full
; And send a request
pop edi eax
call ARP_output_request ; IP in eax
;; TODO: check if driver could transmit packet
mov esi, edi
pop edi eax ; IP in eax, device number in edi, for ARP_output_request
mov eax, -2 ; request send
ret
push esi edi
call ARP_output_request ; And send a request
pop edi esi
;-----------------------------------------------
; At this point, we got an ARP entry in the list
.found_it:
DEBUGF 1,"ARP_IP_to_MAC: found IP\n"
cmp [esi + ARP_entry.Status], ARP_VALID_MAPPING
jne .invalid
cmp [esi + ARP_entry.Status], ARP_VALID_MAPPING ; Does it have a MAC assigned?
je .valid
cmp [esi + ARP_entry.Status], ARP_AWAITING_RESPONSE ; Are we waiting for reply from remote end?
jne .give_up
push esi
mov esi, 10 ; wait 10 ms
call delay_ms
pop esi
jmp .found_it ; now check again
movzx eax, word [esi + ARP_entry.MAC]
.valid:
DEBUGF 1,"ARP_IP_to_MAC: found MAC\n"
movzx eax, word[esi + ARP_entry.MAC]
mov ebx, dword[esi + ARP_entry.MAC + 2]
ret
.invalid:
DEBUGF 1,"ARP_IP_to_MAC: entry has no valid mapping!\n"
mov eax, -1
ret
.full:
DEBUGF 1,"ARP_IP_to_MAC: table is full!\n"
add esp, 8
.give_up:
DEBUGF 1,"ARP_IP_to_MAC: entry has no valid mapping!\n"
mov eax, -1
ret