From d55d70894c6d4709b9ae61109a9fa7c319586b53 Mon Sep 17 00:00:00 2001 From: Hayes Wang Date: Tue, 13 Aug 2019 11:42:07 +0800 Subject: [PATCH] r8152: use alloc_pages for rx buffer Replace kmalloc_node() with alloc_pages() for rx buffer. Signed-off-by: Hayes Wang Signed-off-by: Jakub Kicinski --- drivers/net/usb/r8152.c | 31 +++++++++++-------------------- 1 file changed, 11 insertions(+), 20 deletions(-) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index d063c9b..f41cb72 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -698,8 +698,8 @@ struct rx_agg { struct list_head list, info_list; struct urb *urb; struct r8152 *context; + struct page *page; void *buffer; - void *head; }; struct tx_agg { @@ -1476,7 +1476,7 @@ static void free_rx_agg(struct r8152 *tp, struct rx_agg *agg) list_del(&agg->info_list); usb_free_urb(agg->urb); - kfree(agg->buffer); + __free_pages(agg->page, get_order(tp->rx_buf_sz)); kfree(agg); atomic_dec(&tp->rx_count); @@ -1486,28 +1486,19 @@ static struct rx_agg *alloc_rx_agg(struct r8152 *tp, gfp_t mflags) { struct net_device *netdev = tp->netdev; int node = netdev->dev.parent ? dev_to_node(netdev->dev.parent) : -1; + unsigned int order = get_order(tp->rx_buf_sz); struct rx_agg *rx_agg; unsigned long flags; - u8 *buf; rx_agg = kmalloc_node(sizeof(*rx_agg), mflags, node); if (!rx_agg) return NULL; - buf = kmalloc_node(tp->rx_buf_sz, mflags, node); - if (!buf) + rx_agg->page = alloc_pages(mflags, order); + if (!rx_agg->page) goto free_rx; - if (buf != rx_agg_align(buf)) { - kfree(buf); - buf = kmalloc_node(tp->rx_buf_sz + RX_ALIGN, mflags, - node); - if (!buf) - goto free_rx; - } - - rx_agg->buffer = buf; - rx_agg->head = rx_agg_align(buf); + rx_agg->buffer = page_address(rx_agg->page); rx_agg->urb = usb_alloc_urb(0, mflags); if (!rx_agg->urb) @@ -1526,7 +1517,7 @@ static struct rx_agg *alloc_rx_agg(struct r8152 *tp, gfp_t mflags) return rx_agg; free_buf: - kfree(rx_agg->buffer); + __free_pages(rx_agg->page, order); free_rx: kfree(rx_agg); return NULL; @@ -2003,8 +1994,8 @@ static int rx_bottom(struct r8152 *tp, int budget) if (urb->actual_length < ETH_ZLEN) goto submit; - rx_desc = agg->head; - rx_data = agg->head; + rx_desc = agg->buffer; + rx_data = agg->buffer; len_used += sizeof(struct rx_desc); while (urb->actual_length > len_used) { @@ -2051,7 +2042,7 @@ static int rx_bottom(struct r8152 *tp, int budget) find_next_rx: rx_data = rx_agg_align(rx_data + pkt_len + ETH_FCS_LEN); rx_desc = (struct rx_desc *)rx_data; - len_used = (int)(rx_data - (u8 *)agg->head); + len_used = (int)(rx_data - (u8 *)agg->buffer); len_used += sizeof(struct rx_desc); } @@ -2162,7 +2153,7 @@ int r8152_submit_rx(struct r8152 *tp, struct rx_agg *agg, gfp_t mem_flags) return 0; usb_fill_bulk_urb(agg->urb, tp->udev, usb_rcvbulkpipe(tp->udev, 1), - agg->head, tp->rx_buf_sz, + agg->buffer, tp->rx_buf_sz, (usb_complete_t)read_bulk_callback, agg); ret = usb_submit_urb(agg->urb, mem_flags); -- 2.7.4