#ifndef _NET_GRO_CELLS_H
#define _NET_GRO_CELLS_H

#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/netdevice.h>

struct gro_cell {
	struct sk_buff_head	napi_skbs;
	struct napi_struct	napi;
};

struct gro_cells {
	struct gro_cell __percpu	*cells;
};

static inline int gro_cells_receive(struct gro_cells *gcells, struct sk_buff *skb)
{
	struct gro_cell *cell;
	struct net_device *dev = skb->dev;

	if (!gcells->cells || skb_cloned(skb) || !(dev->features & NETIF_F_GRO))
		return netif_rx(skb);

	cell = this_cpu_ptr(gcells->cells);

	if (skb_queue_len(&cell->napi_skbs) > netdev_max_backlog) {
		atomic_long_inc(&dev->rx_dropped);
		kfree_skb(skb);
		return NET_RX_DROP;
	}

	__skb_queue_tail(&cell->napi_skbs, skb);
	if (skb_queue_len(&cell->napi_skbs) == 1)
		napi_schedule(&cell->napi);
	return NET_RX_SUCCESS;
}

/* called under BH context */
static inline int gro_cell_poll(struct napi_struct *napi, int budget)
{
	struct gro_cell *cell = container_of(napi, struct gro_cell, napi);
	struct sk_buff *skb;
	int work_done = 0;

	while (work_done < budget) {
		skb = __skb_dequeue(&cell->napi_skbs);
		if (!skb)
			break;
		napi_gro_receive(napi, skb);
		work_done++;
	}

	if (work_done < budget)
		napi_complete_done(napi, work_done);
	return work_done;
}

static inline int gro_cells_init(struct gro_cells *gcells, struct net_device *dev)
{
	int i;

	gcells->cells = alloc_percpu(struct gro_cell);
	if (!gcells->cells)
		return -ENOMEM;

	for_each_possible_cpu(i) {
		struct gro_cell *cell = per_cpu_ptr(gcells->cells, i);

		__skb_queue_head_init(&cell->napi_skbs);

		set_bit(NAPI_STATE_NO_BUSY_POLL, &cell->napi.state);

		netif_napi_add(dev, &cell->napi, gro_cell_poll, 64);
		napi_enable(&cell->napi);
	}
	return 0;
}

static inline void gro_cells_destroy(struct gro_cells *gcells)
{
	int i;

	if (!gcells->cells)
		return;
	for_each_possible_cpu(i) {
		struct gro_cell *cell = per_cpu_ptr(gcells->cells, i);

		netif_napi_del(&cell->napi);
		__skb_queue_purge(&cell->napi_skbs);
	}
	free_percpu(gcells->cells);
	gcells->cells = NULL;
}

#endif
linux/net-next.git/commit/include/uapi/asm-generic/sembuf.h?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/uapi/asm-generic/sembuf.h?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/uapi/asm-generic/sembuf.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>uapi</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/asm-generic?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>asm-generic</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/asm-generic/sembuf.h?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>sembuf.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='83b5d1e3d3013dbf90645a5d07179d018c8243fa'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Helge Deller &lt;deller@gmx.de&gt;</td><td class='right'>2017-01-03 22:55:50 +0100</td></tr>
<tr><th>committer</th><td>Helge Deller &lt;deller@gmx.de&gt;</td><td class='right'>2017-01-28 21:54:21 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/asm-generic/sembuf.h?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>83b5d1e3d3013dbf90645a5d07179d018c8243fa</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/uapi/asm-generic/sembuf.h?id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>831d7125df83a827408def371df72b1360e94078</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/uapi/asm-generic/sembuf.h?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>include/uapi/asm-generic/sembuf.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/uapi/asm-generic/sembuf.h?h=nds-private-remove&amp;id=d56a5ca366e785f463b4782f65daac883612a2b2'>d56a5ca366e785f463b4782f65daac883612a2b2</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/uapi/asm-generic/sembuf.h?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa&amp;id2=d56a5ca366e785f463b4782f65daac883612a2b2'>diff</a>)</td></tr></table>
<div class='commit-subject'>parisc, parport_gsc: Fixes for printk continuation lines</div><div class='commit-msg'>Signed-off-by: Helge Deller &lt;deller@gmx.de&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=83b5d1e3d3013dbf90645a5d07179d018c8243fa'>Diffstat</a> (limited to 'include/uapi/asm-generic/sembuf.h')</div><table summary='diffstat' class='diffstat'>