Add some packet-split receive hooks. For one this allows to do NUMA node affine page allocs. Later on these hooks will be extended to do emergency reserve allocations for fragments. Signed-off-by: Peter Zijlstra --- drivers/net/bnx2.c | 8 +++----- drivers/net/e1000/e1000_main.c | 8 ++------ drivers/net/e1000e/netdev.c | 7 ++----- drivers/net/igb/igb_main.c | 9 ++------- drivers/net/ixgbe/ixgbe_main.c | 10 +++------- drivers/net/sky2.c | 16 ++++++---------- include/linux/skbuff.h | 23 +++++++++++++++++++++++ net/core/skbuff.c | 20 ++++++++++++++++++++ 8 files changed, 61 insertions(+), 40 deletions(-) Index: linux-2.6/drivers/net/e1000/e1000_main.c =================================================================== --- linux-2.6.orig/drivers/net/e1000/e1000_main.c +++ linux-2.6/drivers/net/e1000/e1000_main.c @@ -4347,12 +4347,8 @@ static bool e1000_clean_rx_irq_ps(struct pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], PAGE_SIZE, PCI_DMA_FROMDEVICE); ps_page_dma->ps_page_dma[j] = 0; - skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0, - length); + skb_add_rx_frag(skb, j, ps_page->ps_page[j], 0, length); ps_page->ps_page[j] = NULL; - skb->len += length; - skb->data_len += length; - skb->truesize += length; } /* strip the ethernet crc, problem is we're using pages now so @@ -4551,7 +4547,7 @@ static void e1000_alloc_rx_buffers_ps(st if (j < adapter->rx_ps_pages) { if (likely(!ps_page->ps_page[j])) { ps_page->ps_page[j] = - alloc_page(GFP_ATOMIC); + netdev_alloc_page(netdev); if (unlikely(!ps_page->ps_page[j])) { adapter->alloc_rx_buff_failed++; goto no_buffers; Index: linux-2.6/include/linux/skbuff.h =================================================================== --- linux-2.6.orig/include/linux/skbuff.h +++ linux-2.6/include/linux/skbuff.h @@ -829,6 +829,9 @@ static inline void skb_fill_page_desc(st skb_shinfo(skb)->nr_frags = i + 1; } +extern void skb_add_rx_frag(struct sk_buff *skb, int i, struct page *page, + int off, int size); + #define SKB_PAGE_ASSERT(skb) BUG_ON(skb_shinfo(skb)->nr_frags) #define SKB_FRAG_ASSERT(skb) BUG_ON(skb_shinfo(skb)->frag_list) #define SKB_LINEAR_ASSERT(skb) BUG_ON(skb_is_nonlinear(skb)) @@ -1243,6 +1246,26 @@ static inline struct sk_buff *netdev_all return __netdev_alloc_skb(dev, length, GFP_ATOMIC); } +extern struct page *__netdev_alloc_page(struct net_device *dev, gfp_t gfp_mask); + +/** + * netdev_alloc_page - allocate a page for ps-rx on a specific device + * @dev: network device to receive on + * + * Allocate a new page node local to the specified device. + * + * %NULL is returned if there is no free memory. + */ +static inline struct page *netdev_alloc_page(struct net_device *dev) +{ + return __netdev_alloc_page(dev, GFP_ATOMIC); +} + +static inline void netdev_free_page(struct net_device *dev, struct page *page) +{ + __free_page(page); +} + /** * skb_clone_writable - is the header of a clone writable * @skb: buffer to check Index: linux-2.6/net/core/skbuff.c =================================================================== --- linux-2.6.orig/net/core/skbuff.c +++ linux-2.6/net/core/skbuff.c @@ -263,6 +263,26 @@ struct sk_buff *__netdev_alloc_skb(struc return skb; } +struct page *__netdev_alloc_page(struct net_device *dev, gfp_t gfp_mask) +{ + int node = dev->dev.parent ? dev_to_node(dev->dev.parent) : -1; + struct page *page; + + page = alloc_pages_node(node, gfp_mask, 0); + return page; +} +EXPORT_SYMBOL(__netdev_alloc_page); + +void skb_add_rx_frag(struct sk_buff *skb, int i, struct page *page, int off, + int size) +{ + skb_fill_page_desc(skb, i, page, off, size); + skb->len += size; + skb->data_len += size; + skb->truesize += size; +} +EXPORT_SYMBOL(skb_add_rx_frag); + /** * dev_alloc_skb - allocate an skbuff for receiving * @length: length to allocate Index: linux-2.6/drivers/net/sky2.c =================================================================== --- linux-2.6.orig/drivers/net/sky2.c +++ linux-2.6/drivers/net/sky2.c @@ -1272,7 +1272,7 @@ static struct sk_buff *sky2_rx_alloc(str } for (i = 0; i < sky2->rx_nfrags; i++) { - struct page *page = alloc_page(GFP_ATOMIC); + struct page *page = netdev_alloc_page(sky2->netdev); if (!page) goto free_partial; @@ -2141,8 +2141,8 @@ static struct sk_buff *receive_copy(stru } /* Adjust length of skb with fragments to match received data */ -static void skb_put_frags(struct sk_buff *skb, unsigned int hdr_space, - unsigned int length) +static void skb_put_frags(struct sky2_port *sky2, struct sk_buff *skb, + unsigned int hdr_space, unsigned int length) { int i, num_frags; unsigned int size; @@ -2159,15 +2159,11 @@ static void skb_put_frags(struct sk_buff if (length == 0) { /* don't need this page */ - __free_page(frag->page); + netdev_free_page(sky2->netdev, frag->page); --skb_shinfo(skb)->nr_frags; } else { size = min(length, (unsigned) PAGE_SIZE); - - frag->size = size; - skb->data_len += size; - skb->truesize += size; - skb->len += size; + skb_add_rx_frag(skb, i, frag->page, 0, size); length -= size; } } @@ -2194,7 +2190,7 @@ static struct sk_buff *receive_new(struc sky2_rx_map_skb(sky2->hw->pdev, re, hdr_space); if (skb_shinfo(skb)->nr_frags) - skb_put_frags(skb, hdr_space, length); + skb_put_frags(sky2, skb, hdr_space, length); else skb_put(skb, length); return skb; Index: linux-2.6/drivers/net/bnx2.c =================================================================== --- linux-2.6.orig/drivers/net/bnx2.c +++ linux-2.6/drivers/net/bnx2.c @@ -2472,7 +2472,7 @@ bnx2_alloc_rx_page(struct bnx2 *bp, stru struct sw_pg *rx_pg = &rxr->rx_pg_ring[index]; struct rx_bd *rxbd = &rxr->rx_pg_desc_ring[RX_RING(index)][RX_IDX(index)]; - struct page *page = alloc_page(GFP_ATOMIC); + struct page *page = netdev_alloc_page(bp->dev); if (!page) return -ENOMEM; @@ -2497,7 +2497,7 @@ bnx2_free_rx_page(struct bnx2 *bp, struc pci_unmap_page(bp->pdev, pci_unmap_addr(rx_pg, mapping), PAGE_SIZE, PCI_DMA_FROMDEVICE); - __free_page(page); + netdev_free_page(bp->dev, page); rx_pg->page = NULL; } @@ -2828,9 +2828,7 @@ bnx2_rx_skb(struct bnx2 *bp, struct bnx2 } frag_size -= frag_len; - skb->data_len += frag_len; - skb->truesize += frag_len; - skb->len += frag_len; + skb_add_rx_frag(skb, i, rx_pg->page, 0, frag_len); pg_prod = NEXT_RX_BD(pg_prod); pg_cons = RX_PG_RING_IDX(NEXT_RX_BD(pg_cons)); Index: linux-2.6/drivers/net/e1000e/netdev.c =================================================================== --- linux-2.6.orig/drivers/net/e1000e/netdev.c +++ linux-2.6/drivers/net/e1000e/netdev.c @@ -258,7 +258,7 @@ static void e1000_alloc_rx_buffers_ps(st continue; } if (!ps_page->page) { - ps_page->page = alloc_page(GFP_ATOMIC); + ps_page->page = netdev_alloc_page(netdev); if (!ps_page->page) { adapter->alloc_rx_buff_failed++; goto no_buffers; @@ -818,11 +818,8 @@ static bool e1000_clean_rx_irq_ps(struct pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE, PCI_DMA_FROMDEVICE); ps_page->dma = 0; - skb_fill_page_desc(skb, j, ps_page->page, 0, length); + skb_add_rx_frag(skb, j, ps_page->page, 0, length); ps_page->page = NULL; - skb->len += length; - skb->data_len += length; - skb->truesize += length; } copydone: Index: linux-2.6/drivers/net/igb/igb_main.c =================================================================== --- linux-2.6.orig/drivers/net/igb/igb_main.c +++ linux-2.6/drivers/net/igb/igb_main.c @@ -3874,7 +3874,7 @@ static bool igb_clean_rx_irq_adv(struct PAGE_SIZE / 2, PCI_DMA_FROMDEVICE); buffer_info->page_dma = 0; - skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags++, + skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags++, buffer_info->page, buffer_info->page_offset, length); @@ -3884,11 +3884,6 @@ static bool igb_clean_rx_irq_adv(struct buffer_info->page = NULL; else get_page(buffer_info->page); - - skb->len += length; - skb->data_len += length; - - skb->truesize += length; } send_up: i++; @@ -3982,7 +3977,7 @@ static void igb_alloc_rx_buffers_adv(str if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { if (!buffer_info->page) { - buffer_info->page = alloc_page(GFP_ATOMIC); + buffer_info->page = netdev_alloc_page(netdev); if (!buffer_info->page) { adapter->alloc_rx_buff_failed++; goto no_buffers; Index: linux-2.6/drivers/net/ixgbe/ixgbe_main.c =================================================================== --- linux-2.6.orig/drivers/net/ixgbe/ixgbe_main.c +++ linux-2.6/drivers/net/ixgbe/ixgbe_main.c @@ -495,7 +495,7 @@ static void ixgbe_alloc_rx_buffers(struc if (!bi->page && (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)) { - bi->page = alloc_page(GFP_ATOMIC); + bi->page = netdev_alloc_page(netdev); if (!bi->page) { adapter->alloc_rx_page_failed++; goto no_buffers; @@ -622,13 +622,9 @@ static bool ixgbe_clean_rx_irq(struct ix pci_unmap_page(pdev, rx_buffer_info->page_dma, PAGE_SIZE, PCI_DMA_FROMDEVICE); rx_buffer_info->page_dma = 0; - skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, - rx_buffer_info->page, 0, upper_len); + skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, + rx_buffer_info->page, 0, upper_len); rx_buffer_info->page = NULL; - - skb->len += upper_len; - skb->data_len += upper_len; - skb->truesize += upper_len; } i++; -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/