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New network buffers - phase II (Use a static number of static sized pre-allocated buffers)

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git-svn-id: svn://kolibrios.org@5528 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr 2015-03-18 13:40:27 +00:00
parent d69ad59490
commit 7928780e50
1 changed files with 72 additions and 7 deletions
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79
kernel/trunk/network/stack.inc
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@ -32,6 +32,8 @@ DEBUG_NETWORK_ERROR = 1
DEBUG_NETWORK_VERBOSE = 0
NET_DEVICES_MAX = 16
NET_BUFFERS = 512
NET_BUFFER_SIZE = 2048
ARP_BLOCK = 1 ; true or false
EPHEMERAL_PORT_MIN = 49152
@ -146,7 +148,7 @@ NET_DEVICE_ETH = 1
NET_DEVICE_SLIP = 2
; Network link types (link protocols)
NET_LINK_LOOPBACK = 0 ;;; Really a link type?
NET_LINK_LOOPBACK = 0
NET_LINK_MAC = 1 ; Media access control (ethernet, isdn, ...)
NET_LINK_PPP = 2 ; Point to Point Protocol (PPPoE, ...)
NET_LINK_IEEE802.11 = 3 ; IEEE 802.11 (WiFi)
@ -242,8 +244,11 @@ include "socket.inc"
uglobal
align 4
NET_RUNNING dd ?
NET_DRV_LIST rd NET_DEVICES_MAX
NET_RUNNING dd ?
NET_DRV_LIST rd NET_DEVICES_MAX
NET_BUFFS_FREE rd NET_BUFFERS
.current dd ?
endg
@ -261,6 +266,23 @@ endg
align 4
stack_init:
; allocate network buffers
stdcall kernel_alloc, NET_BUFFER_SIZE*NET_BUFFERS
test eax, eax
jz .fail
mov edi, NET_BUFFS_FREE
mov ecx, NET_BUFFERS
cld
.loop:
stosd
add eax, NET_BUFFER_SIZE
dec ecx
jnz .loop
mov eax, NET_BUFFS_FREE
stosd
; Init the network drivers list
xor eax, eax
mov edi, NET_RUNNING
@ -284,7 +306,10 @@ stack_init:
LOOP_init
mov [net_tmr_count], 0
ret
.fail:
DEBUGF DEBUG_NETWORK_ERROR, "Stack init failed!\n"
ret
@ -343,13 +368,53 @@ stack_handler:
align 4
NET_BUFF_alloc:
jmp kernel_alloc
proc NET_BUFF_alloc stdcall, buffersize
cmp [buffersize], NET_BUFFER_SIZE
ja .too_large
spin_lock_irqsave
mov eax, [NET_BUFFS_FREE.current]
cmp eax, NET_BUFFS_FREE+NET_BUFFERS*4
jae .out_of_mem
mov eax, [eax]
add [NET_BUFFS_FREE.current], 4
spin_unlock_irqrestore
DEBUGF 1, "net alloc: 0x%x\n", eax
ret
.out_of_mem:
spin_unlock_irqrestore
xor eax, eax
DEBUGF DEBUG_NETWORK_ERROR, "NET_BUFF_alloc: out of mem!\n"
ret
.too_large:
xor eax, eax
DEBUGF DEBUG_NETWORK_ERROR, "NET_BUFF_alloc: too large!\n"
ret
endp
align 4
NET_BUFF_free:
jmp kernel_free
proc NET_BUFF_free stdcall, buffer
DEBUGF 1, "net free: 0x%x\n", [buffer]
spin_lock_irqsave
sub [NET_BUFFS_FREE.current], 4
mov eax, [NET_BUFFS_FREE.current]
push [buffer]
pop dword[eax]
spin_unlock_irqrestore
ret
endp
align 4