/*
 * Stream Parser
 *
 * Copyright (c) 2016 Tom Herbert <tom@herbertland.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 */

#ifndef __NET_STRPARSER_H_
#define __NET_STRPARSER_H_

#include <linux/skbuff.h>
#include <net/sock.h>

#define STRP_STATS_ADD(stat, count) ((stat) += (count))
#define STRP_STATS_INCR(stat) ((stat)++)

struct strp_stats {
	unsigned long long rx_msgs;
	unsigned long long rx_bytes;
	unsigned int rx_mem_fail;
	unsigned int rx_need_more_hdr;
	unsigned int rx_msg_too_big;
	unsigned int rx_msg_timeouts;
	unsigned int rx_bad_hdr_len;
};

struct strp_aggr_stats {
	unsigned long long rx_msgs;
	unsigned long long rx_bytes;
	unsigned int rx_mem_fail;
	unsigned int rx_need_more_hdr;
	unsigned int rx_msg_too_big;
	unsigned int rx_msg_timeouts;
	unsigned int rx_bad_hdr_len;
	unsigned int rx_aborts;
	unsigned int rx_interrupted;
	unsigned int rx_unrecov_intr;
};

struct strparser;

/* Callbacks are called with lock held for the attached socket */
struct strp_callbacks {
	int (*parse_msg)(struct strparser *strp, struct sk_buff *skb);
	void (*rcv_msg)(struct strparser *strp, struct sk_buff *skb);
	int (*read_sock_done)(struct strparser *strp, int err);
	void (*abort_parser)(struct strparser *strp, int err);
};

struct strp_rx_msg {
	int full_len;
	int offset;
};

static inline struct strp_rx_msg *strp_rx_msg(struct sk_buff *skb)
{
	return (struct strp_rx_msg *)((void *)skb->cb +
		offsetof(struct qdisc_skb_cb, data));
}

/* Structure for an attached lower socket */
struct strparser {
	struct sock *sk;

	u32 rx_stopped : 1;
	u32 rx_paused : 1;
	u32 rx_aborted : 1;
	u32 rx_interrupted : 1;
	u32 rx_unrecov_intr : 1;

	struct sk_buff **rx_skb_nextp;
	struct timer_list rx_msg_timer;
	struct sk_buff *rx_skb_head;
	unsigned int rx_need_bytes;
	struct delayed_work rx_delayed_work;
	struct work_struct rx_work;
	struct strp_stats stats;
	struct strp_callbacks cb;
};

/* Must be called with lock held for attached socket */
static inline void strp_pause(struct strparser *strp)
{
	strp->rx_paused = 1;
}

/* May be called without holding lock for attached socket */
void strp_unpause(struct strparser *strp);

static inline void save_strp_stats(struct strparser *strp,
				   struct strp_aggr_stats *agg_stats)
{
	/* Save psock statistics in the mux when psock is being unattached. */

#define SAVE_PSOCK_STATS(_stat) (agg_stats->_stat +=		\
				 strp->stats._stat)
	SAVE_PSOCK_STATS(rx_msgs);
	SAVE_PSOCK_STATS(rx_bytes);
	SAVE_PSOCK_STATS(rx_mem_fail);
	SAVE_PSOCK_STATS(rx_need_more_hdr);
	SAVE_PSOCK_STATS(rx_msg_too_big);
	SAVE_PSOCK_STATS(rx_msg_timeouts);
	SAVE_PSOCK_STATS(rx_bad_hdr_len);
#undef SAVE_PSOCK_STATS

	if (strp->rx_aborted)
		agg_stats->rx_aborts++;
	if (strp->rx_interrupted)
		agg_stats->rx_interrupted++;
	if (strp->rx_unrecov_intr)
		agg_stats->rx_unrecov_intr++;
}

static inline void aggregate_strp_stats(struct strp_aggr_stats *stats,
					struct strp_aggr_stats *agg_stats)
{
#define SAVE_PSOCK_STATS(_stat) (agg_stats->_stat += stats->_stat)
	SAVE_PSOCK_STATS(rx_msgs);
	SAVE_PSOCK_STATS(rx_bytes);
	SAVE_PSOCK_STATS(rx_mem_fail);
	SAVE_PSOCK_STATS(rx_need_more_hdr);
	SAVE_PSOCK_STATS(rx_msg_too_big);
	SAVE_PSOCK_STATS(rx_msg_timeouts);
	SAVE_PSOCK_STATS(rx_bad_hdr_len);
	SAVE_PSOCK_STATS(rx_aborts);
	SAVE_PSOCK_STATS(rx_interrupted);
	SAVE_PSOCK_STATS(rx_unrecov_intr);
#undef SAVE_PSOCK_STATS

}

void strp_done(struct strparser *strp);
void strp_stop(struct strparser *strp);
void strp_check_rcv(struct strparser *strp);
int strp_init(struct strparser *strp, struct sock *csk,
	      struct strp_callbacks *cb);
void strp_data_ready(struct strparser *strp);

#endif /* __NET_STRPARSER_H_ */
tion 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>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 22:05:52 -0500</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 22:05:52 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/xen/arm?h=nds-private-remove&amp;id=1bae6c99decf9137069646b593d3439171a8a8e2'>1bae6c99decf9137069646b593d3439171a8a8e2</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/xen/arm?id=1bae6c99decf9137069646b593d3439171a8a8e2'>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=1bae6c99decf9137069646b593d3439171a8a8e2'>431604a568cd2303973470de326bd9731370a025</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/xen/arm?h=nds-private-remove&amp;id=1bae6c99decf9137069646b593d3439171a8a8e2'>include/xen/arm</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/xen/arm?h=nds-private-remove&amp;id=63c190429020a9701b42887ac22c28f287f1762f'>63c190429020a9701b42887ac22c28f287f1762f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/xen/arm?h=nds-private-remove&amp;id=1bae6c99decf9137069646b593d3439171a8a8e2&amp;id2=63c190429020a9701b42887ac22c28f287f1762f'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/xen/arm?h=nds-private-remove&amp;id=2b2d3eb41c920b47df2fcedd1489cf748bd09466'>2b2d3eb41c920b47df2fcedd1489cf748bd09466</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/xen/arm?h=nds-private-remove&amp;id=1bae6c99decf9137069646b593d3439171a8a8e2&amp;id2=2b2d3eb41c920b47df2fcedd1489cf748bd09466'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'sh_eth-E-DMAC-interrupt-mask-cleanups'</div><div class='commit-msg'>Sergei Shtylyov says:

====================
sh_eth: E-DMAC interrupt mask cleanups

   Here's a set of 3 patches against DaveM's 'net-next.git' repo. The main goal
of this set is to stop using the bare numbers for the E-DMAC interrupt masks.

[1/3] sh_eth: rename EESIPR bits
[2/3] sh_eth: add missing EESIPR bits
[3/3] sh_eth: stop using bare numbers for EESIPR values
====================

Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=1bae6c99decf9137069646b593d3439171a8a8e2'>Diffstat</a> (limited to 'include/xen/arm')</div><table summary='diffstat' class='diffstat'>