Remove branch in b_net_rx

Author: Ian Seyler

src/drivers/net/i8259x.asm

@@ -268,7 +268,7 @@ net_i8259x_init_rx_enable_wait:
 	jnc net_i8259x_init_rx_enable_wait
 	xor eax, eax
 	mov [rsi+i8259x_RDH], eax
-	mov eax, i8259x_MAX_DESC - 1
+	mov eax, i8259x_MAX_DESC / 2
 	mov [rsi+i8259x_RDT], eax
 
 ; 	; Set SECRXCTRL_RX_DIS
@@ -445,6 +445,10 @@ net_i8259x_transmit:
 
 	; TDESC.STA.DD (bit 32) should be 1 once the hardware has sent the packet
 
+	; Increment interface counters
+	inc qword [rdx+nt_tx_packets]
+	add qword [rdx+nt_tx_bytes], rcx
+
 	pop rax
 	pop rdi
 	ret
@@ -495,6 +499,10 @@ net_i8259x_poll:
 	and eax, i8259x_MAX_DESC - 1
 	mov [rsi+i8259x_RDT], eax	; Write the updated Receive Descriptor Tail
 
+	; Increment interface counters
+	inc qword [rdx+nt_rx_packets]
+	add qword [rdx+nt_rx_bytes], rcx
+
 net_i8259x_poll_end:
 	pop rax
 	pop rbx

src/syscalls/net.asm

@@ -98,10 +98,6 @@ b_net_tx_maxcheck:
 	; Call the driver transmit function
 	call [rdx+nt_transmit]		; Call driver transmit function passing RDX as interface
 
-	; Increment interface counters
-	inc qword [rdx+nt_tx_packets]
-	add qword [rdx+nt_tx_bytes], rcx
-
 	; Unlock the network interface
 	mov rax, rdx
 	add rax, nt_lock
@@ -138,13 +134,6 @@ b_net_rx:
 	; Call the driver poll function
 	call [rdx+nt_poll]		; Call driver poll function passing RDX as interface
 
-	cmp cx, 0
-	je b_net_rx_end
-
-	; Increment interface counters
-	inc qword [rdx+nt_rx_packets]
-	add qword [rdx+nt_rx_bytes], rcx
-
 b_net_rx_end:
 	pop rdx
 	ret