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Changes in net branch:

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Things changed: sockets data organisation, queue macro's are more universal, new checksum routines, changed socket structures, ...
What's new: UDP checksum generation & validation
Rough TCP code has been written, but not debugged yet.

git-svn-id: svn://kolibrios.org@1249 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr
2009-11-06 20:45:08 +00:00
parent 725fe0911e
commit 7f9d0c6697
10 changed files with 3390 additions and 3720 deletions
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101
kernel/branches/net/network/queue.inc
View File

@@ -15,88 +15,97 @@
$Revision$
struct queue
.size dd ?
.w_ptr dd ?
.r_ptr dd ?
.size dd ? ; number of queued packets in thsi queue
.w_ptr dd ? ; current writing pointer in queue
.r_ptr dd ? ; current reading pointer
.data:
ends
struct queue_entry
struct eth_queue_entry
.owner dd ?
.data_ptr dd ?
.data_size dd ?
.size:
ends
struct tcp_in_queue_entry
.data_ptr dd ?
.data_size dd ?
.offset dd ?
.size:
ends
macro add_to_queue ptr, size, returnaddr {
struct tcp_out_queue_entry
.data_ptr dd ?
.data_size dd ?
.ttl dd ?
.retries dd ?
.owner dd ?
.sendproc dd ?
.ack_num dd ?
.size:
ends
cmp dword [ptr + queue.size], size ; Check if queue isnt full
jge .fail
struct socket_queue_entry
.data_ptr dd ?
.data_size dd ?
.offset dd ?
.size:
ends
DEBUGF 1,"Queuing packet for device %x\n",ebx
macro add_to_queue ptr, size, entry_size, failaddr {
inc dword [ptr + queue.size]
cmp [ptr + queue.size], size ; Check if queue isnt full
jge failaddr
mov edi, dword [ptr + queue.w_ptr] ; Current write pointer (FIFO!)
inc [ptr + queue.size]
mov eax, ebx
stosd
pop eax
stosd
pop eax
stosd
mov edi, [ptr + queue.w_ptr] ; Current write pointer (FIFO!)
mov ecx, entry_size/4 ; Write the queue entry
rep movsd ;
cmp edi, size*queue_entry.size+ptr+queue.data ; entry size
lea ecx, [size*entry_size+ptr+queue.data]
cmp edi, ecx ; entry size
jl .no_wrap
sub edi, size*queue_entry.size
sub edi, size*entry_size
.no_wrap:
mov dword [ptr + queue.w_ptr], edi
jmp returnaddr
.fail:
DEBUGF 1,"queuing failed\n"
call kernel_free
add esp, 4
ret
mov [ptr + queue.w_ptr], edi
}
macro get_from_queue ptr, size, returnaddr {
.start_of_code:
cmp dword [ptr + queue.size], 0 ; any packets queued?
je returnaddr
macro get_from_queue ptr, size, entry_size, failaddr {
DEBUGF 1,"Dequeuing packet"
cmp [ptr + queue.size], 0 ; any packets queued?
je failaddr
dec dword [ptr + queue.size]
push dword .start_of_code ; return address for call's
dec [ptr + queue.size]
mov esi, [ptr + queue.r_ptr]
lodsd
mov ebx, eax
lodsd
mov ecx, eax
lodsd
push eax
push ecx
xchg eax, ecx
push esi
DEBUGF 1," for device %x\n", ebx
add esi, entry_size
cmp esi, size*queue_entry.size+ptr+queue.data ; entry size
lea ecx, [size*entry_size+ptr+queue.data]
cmp esi, ecx ; entry size
jl .no_wrap
sub esi, size*queue_entry.size
sub esi, size*entry_size
.no_wrap:
mov dword [ptr + queue.r_ptr], esi
pop esi
}
macro init_queue queue_ptr {
mov [queue_ptr + queue.size] , 0
lea esi, [queue_ptr + queue.data]
mov [queue_ptr + queue.w_ptr], esi
mov [queue_ptr + queue.r_ptr], esi
}