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Make network queue spinlock protected instead of mutex-protected or worse: a combination of both..

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git-svn-id: svn://kolibrios.org@4510 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr
2014-01-22 14:08:37 +00:00
parent 8f29537721
commit 006f9694b3
3 changed files with 6 additions and 35 deletions
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33
kernel/trunk/network/queue.inc
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@@ -28,7 +28,6 @@ struct queue
size dd ? ; number of queued packets in this queue
w_ptr dd ? ; current writing pointer in queue
r_ptr dd ? ; current reading pointer
mutex MUTEX
ends
@@ -47,18 +46,12 @@ macro add_to_queue ptr, size, entry_size, failaddr {
local .ok, .no_wrap
pusha
lea ecx, [ptr + queue.mutex]
call mutex_lock
popa
spin_lock_irqsave
cmp [ptr + queue.size], size ; Check if queue isnt full
jb .ok
pusha
lea ecx, [ptr + queue.mutex]
call mutex_unlock
popa
spin_unlock_irqrestore
jmp failaddr
.ok:
@@ -76,10 +69,7 @@ local .ok, .no_wrap
.no_wrap:
mov [ptr + queue.w_ptr], edi
pusha
lea ecx, [ptr + queue.mutex]
call mutex_unlock
popa
spin_unlock_irqrestore
}
@@ -89,18 +79,12 @@ macro get_from_queue ptr, size, entry_size, failaddr {
local .ok, .no_wrap
pusha
lea ecx, [ptr + queue.mutex]
call mutex_lock
popa
spin_lock_irqsave
cmp [ptr + queue.size], 0 ; any packets queued?
ja .ok
pusha
lea ecx, [ptr + queue.mutex]
call mutex_unlock
popa
spin_unlock_irqrestore
jmp failaddr
.ok:
@@ -122,10 +106,7 @@ local .ok, .no_wrap
pop esi
pusha
lea ecx, [ptr + queue.mutex]
call mutex_unlock
popa
spin_unlock_irqrestore
}
@@ -136,6 +117,4 @@ macro init_queue ptr {
mov [ptr + queue.w_ptr], edi
mov [ptr + queue.r_ptr], edi
lea ecx, [ptr + queue.mutex]
call mutex_init
}