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net: davinci_emac: Invalidate only the received portion of a buffer

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ATM when receiving a packet the whole buffer is invalidated, this change
optimizes this behaviour.

Signed-off-by: Karl Beldan <karl.beldan+oss@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
This commit is contained in:
karl beldan 2016-08-15 17:23:01 +00:00 committed by Joe Hershberger
parent 6202b8f28c
commit a51897b6c1
1 changed files with 5 additions and 5 deletions
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10
drivers/net/davinci_emac.c
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@ -681,12 +681,12 @@ static int davinci_eth_rcv_packet (struct eth_device *dev)
printf ("WARN: emac_rcv_pkt: Error in packet\n");
} else {
unsigned long tmp = (unsigned long)rx_curr_desc->buffer;
unsigned short len =
rx_curr_desc->buff_off_len & 0xffff;
invalidate_dcache_range(tmp, tmp + EMAC_RXBUF_SIZE);
net_process_received_packet(
rx_curr_desc->buffer,
rx_curr_desc->buff_off_len & 0xffff);
ret = rx_curr_desc->buff_off_len & 0xffff;
invalidate_dcache_range(tmp, tmp + ALIGN(len, PKTALIGN));
net_process_received_packet(rx_curr_desc->buffer, len);
ret = len;
}
/* Ack received packet descriptor */