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📁 9p		[ DEL ]
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📁 mana		[ DEL ]
📁 netfilter		[ DEL ]
📁 netns		[ DEL ]
📁 nfc		[ DEL ]
📁 phonet		[ DEL ]
📁 sctp		[ DEL ]
📁 tc_act		[ DEL ]
📄 6lowpan.h	10,271 B	[ EDIT ] \| [ DEL ]
📄 Space.h	1,094 B	[ EDIT ] \| [ DEL ]
📄 act_api.h	9,478 B	[ EDIT ] \| [ DEL ]
📄 addrconf.h	13,826 B	[ EDIT ] \| [ DEL ]
📄 af_ieee802154.h	1,591 B	[ EDIT ] \| [ DEL ]
📄 af_rxrpc.h	2,976 B	[ EDIT ] \| [ DEL ]
📄 af_unix.h	2,272 B	[ EDIT ] \| [ DEL ]
📄 af_vsock.h	7,295 B	[ EDIT ] \| [ DEL ]
📄 ah.h	382 B	[ EDIT ] \| [ DEL ]
📄 arp.h	2,052 B	[ EDIT ] \| [ DEL ]
📄 atmclip.h	1,515 B	[ EDIT ] \| [ DEL ]
📄 ax25.h	14,999 B	[ EDIT ] \| [ DEL ]
📄 ax88796.h	1,488 B	[ EDIT ] \| [ DEL ]
📄 bareudp.h	333 B	[ EDIT ] \| [ DEL ]
📄 bond_3ad.h	9,629 B	[ EDIT ] \| [ DEL ]
📄 bond_alb.h	6,251 B	[ EDIT ] \| [ DEL ]
📄 bond_options.h	3,916 B	[ EDIT ] \| [ DEL ]
📄 bonding.h	20,225 B	[ EDIT ] \| [ DEL ]
📄 bpf_sk_storage.h	1,802 B	[ EDIT ] \| [ DEL ]
📄 busy_poll.h	4,973 B	[ EDIT ] \| [ DEL ]
📄 calipso.h	2,199 B	[ EDIT ] \| [ DEL ]
📄 cfg80211-wext.h	1,900 B	[ EDIT ] \| [ DEL ]
📄 cfg80211.h	325,844 B	[ EDIT ] \| [ DEL ]
📄 cfg802154.h	11,175 B	[ EDIT ] \| [ DEL ]
📄 checksum.h	4,850 B	[ EDIT ] \| [ DEL ]
📄 cipso_ipv4.h	8,399 B	[ EDIT ] \| [ DEL ]
📄 cls_cgroup.h	2,301 B	[ EDIT ] \| [ DEL ]
📄 codel.h	6,000 B	[ EDIT ] \| [ DEL ]
📄 codel_impl.h	8,500 B	[ EDIT ] \| [ DEL ]
📄 codel_qdisc.h	3,001 B	[ EDIT ] \| [ DEL ]
📄 compat.h	1,711 B	[ EDIT ] \| [ DEL ]
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📄 dcbevent.h	1,293 B	[ EDIT ] \| [ DEL ]
📄 dcbnl.h	5,267 B	[ EDIT ] \| [ DEL ]
📄 devlink.h	64,711 B	[ EDIT ] \| [ DEL ]
📄 dn.h	7,046 B	[ EDIT ] \| [ DEL ]
📄 dn_dev.h	5,488 B	[ EDIT ] \| [ DEL ]
📄 dn_fib.h	4,077 B	[ EDIT ] \| [ DEL ]
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📄 dn_nsp.h	5,966 B	[ EDIT ] \| [ DEL ]
📄 dn_route.h	4,500 B	[ EDIT ] \| [ DEL ]
📄 drop_monitor.h	901 B	[ EDIT ] \| [ DEL ]
📄 dropreason-core.h	12,063 B	[ EDIT ] \| [ DEL ]
📄 dsa.h	16,605 B	[ EDIT ] \| [ DEL ]
📄 dsfield.h	1,139 B	[ EDIT ] \| [ DEL ]
📄 dst.h	13,989 B	[ EDIT ] \| [ DEL ]
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📄 failover.h	1,178 B	[ EDIT ] \| [ DEL ]
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📄 gtp.h	633 B	[ EDIT ] \| [ DEL ]
📄 gue.h	3,311 B	[ EDIT ] \| [ DEL ]
📄 hwbm.h	937 B	[ EDIT ] \| [ DEL ]
📄 icmp.h	1,765 B	[ EDIT ] \| [ DEL ]
📄 ieee80211_radiotap.h	23,017 B	[ EDIT ] \| [ DEL ]
📄 ieee802154_netdev.h	9,358 B	[ EDIT ] \| [ DEL ]
📄 if_inet6.h	6,591 B	[ EDIT ] \| [ DEL ]
📄 ife.h	1,057 B	[ EDIT ] \| [ DEL ]
📄 ila.h	498 B	[ EDIT ] \| [ DEL ]
📄 inet6_connection_sock.h	976 B	[ EDIT ] \| [ DEL ]
📄 inet6_hashtables.h	3,746 B	[ EDIT ] \| [ DEL ]
📄 inet_common.h	2,614 B	[ EDIT ] \| [ DEL ]
📄 inet_connection_sock.h	11,981 B	[ EDIT ] \| [ DEL ]
📄 inet_ecn.h	8,071 B	[ EDIT ] \| [ DEL ]
📄 inet_frag.h	4,816 B	[ EDIT ] \| [ DEL ]
📄 inet_hashtables.h	13,847 B	[ EDIT ] \| [ DEL ]
📄 inet_sock.h	9,828 B	[ EDIT ] \| [ DEL ]
📄 inet_timewait_sock.h	3,926 B	[ EDIT ] \| [ DEL ]
📄 inetpeer.h	3,372 B	[ EDIT ] \| [ DEL ]
📄 ip.h	21,221 B	[ EDIT ] \| [ DEL ]
📄 ip6_checksum.h	2,981 B	[ EDIT ] \| [ DEL ]
📄 ip6_fib.h	13,766 B	[ EDIT ] \| [ DEL ]
📄 ip6_route.h	9,220 B	[ EDIT ] \| [ DEL ]
📄 ip6_tunnel.h	5,096 B	[ EDIT ] \| [ DEL ]
📄 ip_fib.h	14,290 B	[ EDIT ] \| [ DEL ]
📄 ip_tunnels.h	14,697 B	[ EDIT ] \| [ DEL ]
📄 ip_vs.h	49,407 B	[ EDIT ] \| [ DEL ]
📄 ipcomp.h	659 B	[ EDIT ] \| [ DEL ]
📄 ipconfig.h	811 B	[ EDIT ] \| [ DEL ]
📄 ipv6.h	32,741 B	[ EDIT ] \| [ DEL ]
📄 ipv6_frag.h	3,321 B	[ EDIT ] \| [ DEL ]
📄 ipv6_stubs.h	2,671 B	[ EDIT ] \| [ DEL ]
📄 ipx.h	4,386 B	[ EDIT ] \| [ DEL ]
📄 iw_handler.h	21,413 B	[ EDIT ] \| [ DEL ]
📄 kcm.h	5,083 B	[ EDIT ] \| [ DEL ]
📄 l3mdev.h	6,743 B	[ EDIT ] \| [ DEL ]
📄 lag.h	409 B	[ EDIT ] \| [ DEL ]
📄 lapb.h	4,869 B	[ EDIT ] \| [ DEL ]
📄 lib80211.h	4,017 B	[ EDIT ] \| [ DEL ]
📄 llc.h	4,464 B	[ EDIT ] \| [ DEL ]
📄 llc_c_ac.h	9,537 B	[ EDIT ] \| [ DEL ]
📄 llc_c_ev.h	10,940 B	[ EDIT ] \| [ DEL ]
📄 llc_c_st.h	1,762 B	[ EDIT ] \| [ DEL ]
📄 llc_conn.h	4,155 B	[ EDIT ] \| [ DEL ]
📄 llc_if.h	2,210 B	[ EDIT ] \| [ DEL ]
📄 llc_pdu.h	14,783 B	[ EDIT ] \| [ DEL ]
📄 llc_s_ac.h	1,591 B	[ EDIT ] \| [ DEL ]
📄 llc_s_ev.h	2,255 B	[ EDIT ] \| [ DEL ]
📄 llc_s_st.h	947 B	[ EDIT ] \| [ DEL ]
📄 llc_sap.h	1,108 B	[ EDIT ] \| [ DEL ]
📄 lwtunnel.h	6,563 B	[ EDIT ] \| [ DEL ]
📄 mac80211.h	294,437 B	[ EDIT ] \| [ DEL ]
📄 mac802154.h	15,633 B	[ EDIT ] \| [ DEL ]
📄 mip6.h	1,617 B	[ EDIT ] \| [ DEL ]
📄 mld.h	2,870 B	[ EDIT ] \| [ DEL ]
📄 mpls.h	1,340 B	[ EDIT ] \| [ DEL ]
📄 mpls_iptunnel.h	827 B	[ EDIT ] \| [ DEL ]
📄 mptcp.h	6,242 B	[ EDIT ] \| [ DEL ]
📄 mrp.h	3,103 B	[ EDIT ] \| [ DEL ]
📄 ncsi.h	1,964 B	[ EDIT ] \| [ DEL ]
📄 ndisc.h	15,095 B	[ EDIT ] \| [ DEL ]
📄 neighbour.h	16,289 B	[ EDIT ] \| [ DEL ]
📄 net_failover.h	1,023 B	[ EDIT ] \| [ DEL ]
📄 net_namespace.h	13,957 B	[ EDIT ] \| [ DEL ]
📄 net_ratelimit.h	220 B	[ EDIT ] \| [ DEL ]
📄 netdev_queues.h	5,609 B	[ EDIT ] \| [ DEL ]
📄 netevent.h	1,044 B	[ EDIT ] \| [ DEL ]
📄 netlabel.h	21,236 B	[ EDIT ] \| [ DEL ]
📄 netlink.h	63,253 B	[ EDIT ] \| [ DEL ]
📄 netprio_cgroup.h	1,260 B	[ EDIT ] \| [ DEL ]
📄 netrom.h	7,896 B	[ EDIT ] \| [ DEL ]
📄 nexthop.h	865 B	[ EDIT ] \| [ DEL ]
📄 nl802154.h	12,385 B	[ EDIT ] \| [ DEL ]
📄 nsh.h	12,602 B	[ EDIT ] \| [ DEL ]
📄 p8022.h	447 B	[ EDIT ] \| [ DEL ]
📄 page_pool.h	6,985 B	[ EDIT ] \| [ DEL ]
📄 pie.h	3,684 B	[ EDIT ] \| [ DEL ]
📄 ping.h	3,197 B	[ EDIT ] \| [ DEL ]
📄 pkt_cls.h	26,178 B	[ EDIT ] \| [ DEL ]
📄 pkt_sched.h	6,543 B	[ EDIT ] \| [ DEL ]
📄 pptp.h	557 B	[ EDIT ] \| [ DEL ]
📄 protocol.h	4,320 B	[ EDIT ] \| [ DEL ]
📄 psample.h	1,083 B	[ EDIT ] \| [ DEL ]
📄 psnap.h	351 B	[ EDIT ] \| [ DEL ]
📄 raw.h	2,161 B	[ EDIT ] \| [ DEL ]
📄 rawv6.h	856 B	[ EDIT ] \| [ DEL ]
📄 red.h	11,600 B	[ EDIT ] \| [ DEL ]
📄 regulatory.h	10,961 B	[ EDIT ] \| [ DEL ]
📄 request_sock.h	6,871 B	[ EDIT ] \| [ DEL ]
📄 rose.h	7,802 B	[ EDIT ] \| [ DEL ]
📄 route.h	11,327 B	[ EDIT ] \| [ DEL ]
📄 rsi_91x.h	1,710 B	[ EDIT ] \| [ DEL ]
📄 rtnetlink.h	7,212 B	[ EDIT ] \| [ DEL ]
📄 sch_generic.h	33,841 B	[ EDIT ] \| [ DEL ]
📄 scm.h	3,671 B	[ EDIT ] \| [ DEL ]
📄 secure_seq.h	855 B	[ EDIT ] \| [ DEL ]
📄 seg6.h	1,874 B	[ EDIT ] \| [ DEL ]
📄 seg6_hmac.h	1,699 B	[ EDIT ] \| [ DEL ]
📄 seg6_local.h	870 B	[ EDIT ] \| [ DEL ]
📄 slhc_vj.h	6,831 B	[ EDIT ] \| [ DEL ]
📄 smc.h	2,155 B	[ EDIT ] \| [ DEL ]
📄 snmp.h	5,482 B	[ EDIT ] \| [ DEL ]
📄 sock.h	79,182 B	[ EDIT ] \| [ DEL ]
📄 sock_reuseport.h	1,565 B	[ EDIT ] \| [ DEL ]
📄 stp.h	383 B	[ EDIT ] \| [ DEL ]
📄 strparser.h	4,340 B	[ EDIT ] \| [ DEL ]
📄 switchdev.h	17,812 B	[ EDIT ] \| [ DEL ]
📄 tc_wrapper.h	7,033 B	[ EDIT ] \| [ DEL ]
📄 tcp.h	73,125 B	[ EDIT ] \| [ DEL ]
📄 tcp_states.h	1,540 B	[ EDIT ] \| [ DEL ]
📄 timewait_sock.h	1,136 B	[ EDIT ] \| [ DEL ]
📄 tipc.h	2,405 B	[ EDIT ] \| [ DEL ]
📄 tls.h	21,363 B	[ EDIT ] \| [ DEL ]
📄 tls_toe.h	3,006 B	[ EDIT ] \| [ DEL ]
📄 transp_v6.h	1,996 B	[ EDIT ] \| [ DEL ]
📄 tso.h	515 B	[ EDIT ] \| [ DEL ]
📄 tun_proto.h	988 B	[ EDIT ] \| [ DEL ]
📄 udp.h	16,481 B	[ EDIT ] \| [ DEL ]
📄 udp_tunnel.h	13,376 B	[ EDIT ] \| [ DEL ]
📄 udplite.h	3,762 B	[ EDIT ] \| [ DEL ]
📄 vsock_addr.h	662 B	[ EDIT ] \| [ DEL ]
📄 vxlan.h	13,541 B	[ EDIT ] \| [ DEL ]
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📄 x25.h	9,658 B	[ EDIT ] \| [ DEL ]
📄 x25device.h	387 B	[ EDIT ] \| [ DEL ]
📄 xdp.h	9,436 B	[ EDIT ] \| [ DEL ]
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📄 xdp_sock.h	2,094 B	[ EDIT ] \| [ DEL ]
📄 xdp_sock_drv.h	6,423 B	[ EDIT ] \| [ DEL ]
📄 xfrm.h	59,628 B	[ EDIT ] \| [ DEL ]
📄 xsk_buff_pool.h	6,550 B	[ EDIT ] \| [ DEL ]

[ CLOSE ]

EDIT: inet_frag.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_FRAG_H__
#define __NET_FRAG_H__

#include <linux/rhashtable-types.h>
#include <net/dropreason-core.h>

struct netns_frags {
	/* sysctls */
	long			high_thresh;
	long			low_thresh;
	int			timeout;
	int			max_dist;
	struct inet_frags	*f;

struct rhashtable       rhashtable ____cacheline_aligned_in_smp;

/* Keep atomic mem on separate cachelines in structs that include it */
	atomic_long_t		mem ____cacheline_aligned_in_smp;
};

/**
 * fragment queue flags
 *
 * @INET_FRAG_FIRST_IN: first fragment has arrived
 * @INET_FRAG_LAST_IN: final fragment has arrived
 * @INET_FRAG_COMPLETE: frag queue has been processed and is due for destruction
 * @INET_FRAG_DROP: if skbs must be dropped (instead of being consumed)
 */
enum {
	INET_FRAG_FIRST_IN	= BIT(0),
	INET_FRAG_LAST_IN	= BIT(1),
	INET_FRAG_COMPLETE	= BIT(2),
	INET_FRAG_DROP		= BIT(4),
};

struct frag_v4_compare_key {
	__be32		saddr;
	__be32		daddr;
	u32		user;
	u32		vif;
	__be16		id;
	u16		protocol;
};

struct frag_v6_compare_key {
	struct in6_addr	saddr;
	struct in6_addr	daddr;
	u32		user;
	__be32		id;
	u32		iif;
};

/**
 * struct inet_frag_queue - fragment queue
 *
 * @node: rhash node
 * @key: keys identifying this frag.
 * @timer: queue expiration timer
 * @lock: spinlock protecting this frag
 * @refcnt: reference count of the queue
 * @fragments: received fragments head
 * @rb_fragments: received fragments rb-tree root
 * @fragments_tail: received fragments tail
 * @last_run_head: the head of the last "run". see ip_fragment.c
 * @stamp: timestamp of the last received fragment
 * @len: total length of the original datagram
 * @meat: length of received fragments so far
 * @flags: fragment queue flags
 * @max_size: maximum received fragment size
 * @net: namespace that this frag belongs to
 * @rcu: rcu head for freeing deferall
 */
struct inet_frag_queue {
	struct rhash_head	node;
	union {
		struct frag_v4_compare_key v4;
		struct frag_v6_compare_key v6;
	} key;
	struct timer_list	timer;
	spinlock_t		lock;
	refcount_t		refcnt;
	struct sk_buff		*fragments;  /* used in 6lopwpan IPv6. */
	struct rb_root		rb_fragments; /* Used in IPv4/IPv6. */
	struct sk_buff		*fragments_tail;
	struct sk_buff		*last_run_head;
	ktime_t			stamp;
	int			len;
	int			meat;
	__u8			flags;
	u16			max_size;
	struct netns_frags      *net;
	struct rcu_head		rcu;
};

struct inet_frags {
	unsigned int		qsize;

void			(*constructor)(struct inet_frag_queue *q,
					       const void *arg);
	void			(*destructor)(struct inet_frag_queue *);
	void			(*frag_expire)(struct timer_list *t);
	struct kmem_cache	*frags_cachep;
	const char		*frags_cache_name;
	struct rhashtable_params rhash_params;
};

int inet_frags_init(struct inet_frags *);
void inet_frags_fini(struct inet_frags *);

static inline int inet_frags_init_net(struct netns_frags *nf)
{
	atomic_long_set(&nf->mem, 0);
	return rhashtable_init(&nf->rhashtable, &nf->f->rhash_params);
}
void inet_frags_exit_net(struct netns_frags *nf);

void inet_frag_kill(struct inet_frag_queue *q);
void inet_frag_destroy(struct inet_frag_queue *q);
struct inet_frag_queue *inet_frag_find(struct netns_frags *nf, void *key);

/* Free all skbs in the queue; return the sum of their truesizes. */
unsigned int inet_frag_rbtree_purge(struct rb_root *root,
				    enum skb_drop_reason reason);

static inline void inet_frag_put(struct inet_frag_queue *q)
{
	if (refcount_dec_and_test(&q->refcnt))
		inet_frag_destroy(q);
}

/* Memory Tracking Functions. */

static inline long frag_mem_limit(const struct netns_frags *nf)
{
	return atomic_long_read(&nf->mem);
}

static inline void sub_frag_mem_limit(struct netns_frags *nf, long val)
{
	atomic_long_sub(val, &nf->mem);
}

static inline void add_frag_mem_limit(struct netns_frags *nf, long val)
{
	atomic_long_add(val, &nf->mem);
}

/* RFC 3168 support :
 * We want to check ECN values of all fragments, do detect invalid combinations.
 * In ipq->ecn, we store the OR value of each ip4_frag_ecn() fragment value.
 */
#define	IPFRAG_ECN_NOT_ECT	0x01 /* one frag had ECN_NOT_ECT */
#define	IPFRAG_ECN_ECT_1	0x02 /* one frag had ECN_ECT_1 */
#define	IPFRAG_ECN_ECT_0	0x04 /* one frag had ECN_ECT_0 */
#define	IPFRAG_ECN_CE		0x08 /* one frag had ECN_CE */

extern const u8 ip_frag_ecn_table[16];

/* Return values of inet_frag_queue_insert() */
#define IPFRAG_OK	0
#define IPFRAG_DUP	1
#define IPFRAG_OVERLAP	2
int inet_frag_queue_insert(struct inet_frag_queue *q, struct sk_buff *skb,
			   int offset, int end);
void *inet_frag_reasm_prepare(struct inet_frag_queue *q, struct sk_buff *skb,
			      struct sk_buff *parent);
void inet_frag_reasm_finish(struct inet_frag_queue *q, struct sk_buff *head,
			    void *reasm_data, bool try_coalesce);
struct sk_buff *inet_frag_pull_head(struct inet_frag_queue *q);

#endif