From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: [PATCH] sky2: add bql support Date: Tue, 29 Nov 2011 17:15:33 -0800 Message-ID: <20111129171533.146cec9f@nehalam.linuxnetplumber.net> References: <20111128201907.6d31d4c3@nehalam.linuxnetplumber.net> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Tom Herbert , netdev@vger.kernel.org To: David Miller Return-path: Received: from mail.vyatta.com ([76.74.103.46]:36092 "EHLO mail.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756530Ab1K3BPg (ORCPT ); Tue, 29 Nov 2011 20:15:36 -0500 In-Reply-To: <20111128201907.6d31d4c3@nehalam.linuxnetplumber.net> Sender: netdev-owner@vger.kernel.org List-ID: This adds support for byte queue limits and aggregates statistics update (suggestion from Eric). Signed-off-by: Stephen Hemminger --- a/drivers/net/ethernet/marvell/sky2.c 2011-11-28 19:37:50.739557687 -0800 +++ b/drivers/net/ethernet/marvell/sky2.c 2011-11-29 16:44:52.786657199 -0800 @@ -1110,6 +1110,7 @@ static void tx_init(struct sky2_port *sk sky2->tx_prod = sky2->tx_cons = 0; sky2->tx_tcpsum = 0; sky2->tx_last_mss = 0; + netdev_reset_queue(sky2->netdev); le = get_tx_le(sky2, &sky2->tx_prod); le->addr = 0; @@ -1971,6 +1972,7 @@ static netdev_tx_t sky2_xmit_frame(struc if (tx_avail(sky2) <= MAX_SKB_TX_LE) netif_stop_queue(dev); + netdev_sent_queue(dev, skb->len); sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod); return NETDEV_TX_OK; @@ -2002,7 +2004,8 @@ mapping_error: static void sky2_tx_complete(struct sky2_port *sky2, u16 done) { struct net_device *dev = sky2->netdev; - unsigned idx; + u16 idx; + unsigned int bytes_compl = 0, pkts_compl = 0; BUG_ON(done >= sky2->tx_ring_size); @@ -2017,10 +2020,8 @@ static void sky2_tx_complete(struct sky2 netif_printk(sky2, tx_done, KERN_DEBUG, dev, "tx done %u\n", idx); - u64_stats_update_begin(&sky2->tx_stats.syncp); - ++sky2->tx_stats.packets; - sky2->tx_stats.bytes += skb->len; - u64_stats_update_end(&sky2->tx_stats.syncp); + pkts_compl++; + bytes_compl += skb->len; re->skb = NULL; dev_kfree_skb_any(skb); @@ -2031,6 +2032,13 @@ static void sky2_tx_complete(struct sky2 sky2->tx_cons = idx; smp_mb(); + + netdev_completed_queue(dev, pkts_compl, bytes_compl); + + u64_stats_update_begin(&sky2->tx_stats.syncp); + sky2->tx_stats.packets += pkts_compl; + sky2->tx_stats.bytes += bytes_compl; + u64_stats_update_end(&sky2->tx_stats.syncp); } static void sky2_tx_reset(struct sky2_hw *hw, unsigned port)