[ SYSTEM ]: Linux srv.persadacompanies.com 4.18.0-553.56.1.el8_10.x86_64 #1 SMP Tue Jun 10 05:00:59 EDT 2025 x86_64
[ SERVER ]: Apache | PHP: 8.4.19
[ USER ]: persadamedika | IP: 45.64.1.108
GEFORCE FILE MANAGER
/
usr
/
src
/
kernels
/
4.18.0-553.56.1.el8_10.x86_64
/
include
/
net
/
UPLOAD:
NAME
SIZE
QUICK PERMS
ACTIONS
📁 9p
SET
[ DEL ]
📁 bluetooth
SET
[ DEL ]
📁 caif
SET
[ DEL ]
📁 iucv
SET
[ DEL ]
📁 mana
SET
[ DEL ]
📁 netfilter
SET
[ DEL ]
📁 netns
SET
[ DEL ]
📁 nfc
SET
[ DEL ]
📁 phonet
SET
[ DEL ]
📁 sctp
SET
[ DEL ]
📁 tc_act
SET
[ DEL ]
📄 6lowpan.h
10,271 B
SET
[ EDIT ]
|
[ DEL ]
📄 Space.h
1,094 B
SET
[ EDIT ]
|
[ DEL ]
📄 act_api.h
9,478 B
SET
[ EDIT ]
|
[ DEL ]
📄 addrconf.h
13,826 B
SET
[ EDIT ]
|
[ DEL ]
📄 af_ieee802154.h
1,591 B
SET
[ EDIT ]
|
[ DEL ]
📄 af_rxrpc.h
2,976 B
SET
[ EDIT ]
|
[ DEL ]
📄 af_unix.h
2,272 B
SET
[ EDIT ]
|
[ DEL ]
📄 af_vsock.h
7,295 B
SET
[ EDIT ]
|
[ DEL ]
📄 ah.h
382 B
SET
[ EDIT ]
|
[ DEL ]
📄 arp.h
2,052 B
SET
[ EDIT ]
|
[ DEL ]
📄 atmclip.h
1,515 B
SET
[ EDIT ]
|
[ DEL ]
📄 ax25.h
14,999 B
SET
[ EDIT ]
|
[ DEL ]
📄 ax88796.h
1,488 B
SET
[ EDIT ]
|
[ DEL ]
📄 bareudp.h
333 B
SET
[ EDIT ]
|
[ DEL ]
📄 bond_3ad.h
9,629 B
SET
[ EDIT ]
|
[ DEL ]
📄 bond_alb.h
6,251 B
SET
[ EDIT ]
|
[ DEL ]
📄 bond_options.h
3,916 B
SET
[ EDIT ]
|
[ DEL ]
📄 bonding.h
20,225 B
SET
[ EDIT ]
|
[ DEL ]
📄 bpf_sk_storage.h
1,802 B
SET
[ EDIT ]
|
[ DEL ]
📄 busy_poll.h
4,973 B
SET
[ EDIT ]
|
[ DEL ]
📄 calipso.h
2,199 B
SET
[ EDIT ]
|
[ DEL ]
📄 cfg80211-wext.h
1,900 B
SET
[ EDIT ]
|
[ DEL ]
📄 cfg80211.h
325,844 B
SET
[ EDIT ]
|
[ DEL ]
📄 cfg802154.h
11,175 B
SET
[ EDIT ]
|
[ DEL ]
📄 checksum.h
4,850 B
SET
[ EDIT ]
|
[ DEL ]
📄 cipso_ipv4.h
8,399 B
SET
[ EDIT ]
|
[ DEL ]
📄 cls_cgroup.h
2,301 B
SET
[ EDIT ]
|
[ DEL ]
📄 codel.h
6,000 B
SET
[ EDIT ]
|
[ DEL ]
📄 codel_impl.h
8,500 B
SET
[ EDIT ]
|
[ DEL ]
📄 codel_qdisc.h
3,001 B
SET
[ EDIT ]
|
[ DEL ]
📄 compat.h
1,711 B
SET
[ EDIT ]
|
[ DEL ]
📄 datalink.h
619 B
SET
[ EDIT ]
|
[ DEL ]
📄 dcbevent.h
1,293 B
SET
[ EDIT ]
|
[ DEL ]
📄 dcbnl.h
5,267 B
SET
[ EDIT ]
|
[ DEL ]
📄 devlink.h
64,711 B
SET
[ EDIT ]
|
[ DEL ]
📄 dn.h
7,046 B
SET
[ EDIT ]
|
[ DEL ]
📄 dn_dev.h
5,488 B
SET
[ EDIT ]
|
[ DEL ]
📄 dn_fib.h
4,077 B
SET
[ EDIT ]
|
[ DEL ]
📄 dn_neigh.h
968 B
SET
[ EDIT ]
|
[ DEL ]
📄 dn_nsp.h
5,966 B
SET
[ EDIT ]
|
[ DEL ]
📄 dn_route.h
4,500 B
SET
[ EDIT ]
|
[ DEL ]
📄 drop_monitor.h
901 B
SET
[ EDIT ]
|
[ DEL ]
📄 dropreason-core.h
12,063 B
SET
[ EDIT ]
|
[ DEL ]
📄 dsa.h
16,605 B
SET
[ EDIT ]
|
[ DEL ]
📄 dsfield.h
1,139 B
SET
[ EDIT ]
|
[ DEL ]
📄 dst.h
13,989 B
SET
[ EDIT ]
|
[ DEL ]
📄 dst_cache.h
2,596 B
SET
[ EDIT ]
|
[ DEL ]
📄 dst_metadata.h
5,521 B
SET
[ EDIT ]
|
[ DEL ]
📄 dst_ops.h
2,564 B
SET
[ EDIT ]
|
[ DEL ]
📄 erspan.h
8,527 B
SET
[ EDIT ]
|
[ DEL ]
📄 esp.h
1,190 B
SET
[ EDIT ]
|
[ DEL ]
📄 espintcp.h
966 B
SET
[ EDIT ]
|
[ DEL ]
📄 ethoc.h
537 B
SET
[ EDIT ]
|
[ DEL ]
📄 failover.h
1,178 B
SET
[ EDIT ]
|
[ DEL ]
📄 fib_notifier.h
1,476 B
SET
[ EDIT ]
|
[ DEL ]
📄 fib_rules.h
5,728 B
SET
[ EDIT ]
|
[ DEL ]
📄 firewire.h
636 B
SET
[ EDIT ]
|
[ DEL ]
📄 flow.h
6,353 B
SET
[ EDIT ]
|
[ DEL ]
📄 flow_dissector.h
11,284 B
SET
[ EDIT ]
|
[ DEL ]
📄 flow_offload.h
17,797 B
SET
[ EDIT ]
|
[ DEL ]
📄 fou.h
549 B
SET
[ EDIT ]
|
[ DEL ]
📄 fq.h
2,497 B
SET
[ EDIT ]
|
[ DEL ]
📄 fq_impl.h
8,144 B
SET
[ EDIT ]
|
[ DEL ]
📄 garp.h
2,678 B
SET
[ EDIT ]
|
[ DEL ]
📄 gen_stats.h
3,034 B
SET
[ EDIT ]
|
[ DEL ]
📄 genetlink.h
14,647 B
SET
[ EDIT ]
|
[ DEL ]
📄 geneve.h
1,898 B
SET
[ EDIT ]
|
[ DEL ]
📄 gre.h
3,377 B
SET
[ EDIT ]
|
[ DEL ]
📄 gro_cells.h
443 B
SET
[ EDIT ]
|
[ DEL ]
📄 gtp.h
633 B
SET
[ EDIT ]
|
[ DEL ]
📄 gue.h
3,311 B
SET
[ EDIT ]
|
[ DEL ]
📄 hwbm.h
937 B
SET
[ EDIT ]
|
[ DEL ]
📄 icmp.h
1,765 B
SET
[ EDIT ]
|
[ DEL ]
📄 ieee80211_radiotap.h
23,017 B
SET
[ EDIT ]
|
[ DEL ]
📄 ieee802154_netdev.h
9,358 B
SET
[ EDIT ]
|
[ DEL ]
📄 if_inet6.h
6,591 B
SET
[ EDIT ]
|
[ DEL ]
📄 ife.h
1,057 B
SET
[ EDIT ]
|
[ DEL ]
📄 ila.h
498 B
SET
[ EDIT ]
|
[ DEL ]
📄 inet6_connection_sock.h
976 B
SET
[ EDIT ]
|
[ DEL ]
📄 inet6_hashtables.h
3,746 B
SET
[ EDIT ]
|
[ DEL ]
📄 inet_common.h
2,614 B
SET
[ EDIT ]
|
[ DEL ]
📄 inet_connection_sock.h
11,981 B
SET
[ EDIT ]
|
[ DEL ]
📄 inet_ecn.h
8,071 B
SET
[ EDIT ]
|
[ DEL ]
📄 inet_frag.h
4,816 B
SET
[ EDIT ]
|
[ DEL ]
📄 inet_hashtables.h
13,847 B
SET
[ EDIT ]
|
[ DEL ]
📄 inet_sock.h
9,828 B
SET
[ EDIT ]
|
[ DEL ]
📄 inet_timewait_sock.h
3,926 B
SET
[ EDIT ]
|
[ DEL ]
📄 inetpeer.h
3,372 B
SET
[ EDIT ]
|
[ DEL ]
📄 ip.h
21,221 B
SET
[ EDIT ]
|
[ DEL ]
📄 ip6_checksum.h
2,981 B
SET
[ EDIT ]
|
[ DEL ]
📄 ip6_fib.h
13,766 B
SET
[ EDIT ]
|
[ DEL ]
📄 ip6_route.h
9,220 B
SET
[ EDIT ]
|
[ DEL ]
📄 ip6_tunnel.h
5,096 B
SET
[ EDIT ]
|
[ DEL ]
📄 ip_fib.h
14,290 B
SET
[ EDIT ]
|
[ DEL ]
📄 ip_tunnels.h
14,697 B
SET
[ EDIT ]
|
[ DEL ]
📄 ip_vs.h
49,407 B
SET
[ EDIT ]
|
[ DEL ]
📄 ipcomp.h
659 B
SET
[ EDIT ]
|
[ DEL ]
📄 ipconfig.h
811 B
SET
[ EDIT ]
|
[ DEL ]
📄 ipv6.h
32,741 B
SET
[ EDIT ]
|
[ DEL ]
📄 ipv6_frag.h
3,321 B
SET
[ EDIT ]
|
[ DEL ]
📄 ipv6_stubs.h
2,671 B
SET
[ EDIT ]
|
[ DEL ]
📄 ipx.h
4,386 B
SET
[ EDIT ]
|
[ DEL ]
📄 iw_handler.h
21,413 B
SET
[ EDIT ]
|
[ DEL ]
📄 kcm.h
5,083 B
SET
[ EDIT ]
|
[ DEL ]
📄 l3mdev.h
6,743 B
SET
[ EDIT ]
|
[ DEL ]
📄 lag.h
409 B
SET
[ EDIT ]
|
[ DEL ]
📄 lapb.h
4,869 B
SET
[ EDIT ]
|
[ DEL ]
📄 lib80211.h
4,017 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc.h
4,464 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc_c_ac.h
9,537 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc_c_ev.h
10,940 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc_c_st.h
1,762 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc_conn.h
4,155 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc_if.h
2,210 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc_pdu.h
14,783 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc_s_ac.h
1,591 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc_s_ev.h
2,255 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc_s_st.h
947 B
SET
[ EDIT ]
|
[ DEL ]
📄 llc_sap.h
1,108 B
SET
[ EDIT ]
|
[ DEL ]
📄 lwtunnel.h
6,563 B
SET
[ EDIT ]
|
[ DEL ]
📄 mac80211.h
294,437 B
SET
[ EDIT ]
|
[ DEL ]
📄 mac802154.h
15,633 B
SET
[ EDIT ]
|
[ DEL ]
📄 mip6.h
1,617 B
SET
[ EDIT ]
|
[ DEL ]
📄 mld.h
2,870 B
SET
[ EDIT ]
|
[ DEL ]
📄 mpls.h
1,340 B
SET
[ EDIT ]
|
[ DEL ]
📄 mpls_iptunnel.h
827 B
SET
[ EDIT ]
|
[ DEL ]
📄 mptcp.h
6,242 B
SET
[ EDIT ]
|
[ DEL ]
📄 mrp.h
3,103 B
SET
[ EDIT ]
|
[ DEL ]
📄 ncsi.h
1,964 B
SET
[ EDIT ]
|
[ DEL ]
📄 ndisc.h
15,095 B
SET
[ EDIT ]
|
[ DEL ]
📄 neighbour.h
16,289 B
SET
[ EDIT ]
|
[ DEL ]
📄 net_failover.h
1,023 B
SET
[ EDIT ]
|
[ DEL ]
📄 net_namespace.h
13,957 B
SET
[ EDIT ]
|
[ DEL ]
📄 net_ratelimit.h
220 B
SET
[ EDIT ]
|
[ DEL ]
📄 netdev_queues.h
5,609 B
SET
[ EDIT ]
|
[ DEL ]
📄 netevent.h
1,044 B
SET
[ EDIT ]
|
[ DEL ]
📄 netlabel.h
21,236 B
SET
[ EDIT ]
|
[ DEL ]
📄 netlink.h
63,253 B
SET
[ EDIT ]
|
[ DEL ]
📄 netprio_cgroup.h
1,260 B
SET
[ EDIT ]
|
[ DEL ]
📄 netrom.h
7,896 B
SET
[ EDIT ]
|
[ DEL ]
📄 nexthop.h
865 B
SET
[ EDIT ]
|
[ DEL ]
📄 nl802154.h
12,385 B
SET
[ EDIT ]
|
[ DEL ]
📄 nsh.h
12,602 B
SET
[ EDIT ]
|
[ DEL ]
📄 p8022.h
447 B
SET
[ EDIT ]
|
[ DEL ]
📄 page_pool.h
6,985 B
SET
[ EDIT ]
|
[ DEL ]
📄 pie.h
3,684 B
SET
[ EDIT ]
|
[ DEL ]
📄 ping.h
3,197 B
SET
[ EDIT ]
|
[ DEL ]
📄 pkt_cls.h
26,178 B
SET
[ EDIT ]
|
[ DEL ]
📄 pkt_sched.h
6,543 B
SET
[ EDIT ]
|
[ DEL ]
📄 pptp.h
557 B
SET
[ EDIT ]
|
[ DEL ]
📄 protocol.h
4,320 B
SET
[ EDIT ]
|
[ DEL ]
📄 psample.h
1,083 B
SET
[ EDIT ]
|
[ DEL ]
📄 psnap.h
351 B
SET
[ EDIT ]
|
[ DEL ]
📄 raw.h
2,161 B
SET
[ EDIT ]
|
[ DEL ]
📄 rawv6.h
856 B
SET
[ EDIT ]
|
[ DEL ]
📄 red.h
11,600 B
SET
[ EDIT ]
|
[ DEL ]
📄 regulatory.h
10,961 B
SET
[ EDIT ]
|
[ DEL ]
📄 request_sock.h
6,871 B
SET
[ EDIT ]
|
[ DEL ]
📄 rose.h
7,802 B
SET
[ EDIT ]
|
[ DEL ]
📄 route.h
11,327 B
SET
[ EDIT ]
|
[ DEL ]
📄 rsi_91x.h
1,710 B
SET
[ EDIT ]
|
[ DEL ]
📄 rtnetlink.h
7,212 B
SET
[ EDIT ]
|
[ DEL ]
📄 sch_generic.h
33,841 B
SET
[ EDIT ]
|
[ DEL ]
📄 scm.h
3,671 B
SET
[ EDIT ]
|
[ DEL ]
📄 secure_seq.h
855 B
SET
[ EDIT ]
|
[ DEL ]
📄 seg6.h
1,874 B
SET
[ EDIT ]
|
[ DEL ]
📄 seg6_hmac.h
1,699 B
SET
[ EDIT ]
|
[ DEL ]
📄 seg6_local.h
870 B
SET
[ EDIT ]
|
[ DEL ]
📄 slhc_vj.h
6,831 B
SET
[ EDIT ]
|
[ DEL ]
📄 smc.h
2,155 B
SET
[ EDIT ]
|
[ DEL ]
📄 snmp.h
5,482 B
SET
[ EDIT ]
|
[ DEL ]
📄 sock.h
79,182 B
SET
[ EDIT ]
|
[ DEL ]
📄 sock_reuseport.h
1,565 B
SET
[ EDIT ]
|
[ DEL ]
📄 stp.h
383 B
SET
[ EDIT ]
|
[ DEL ]
📄 strparser.h
4,340 B
SET
[ EDIT ]
|
[ DEL ]
📄 switchdev.h
17,812 B
SET
[ EDIT ]
|
[ DEL ]
📄 tc_wrapper.h
7,033 B
SET
[ EDIT ]
|
[ DEL ]
📄 tcp.h
73,125 B
SET
[ EDIT ]
|
[ DEL ]
📄 tcp_states.h
1,540 B
SET
[ EDIT ]
|
[ DEL ]
📄 timewait_sock.h
1,136 B
SET
[ EDIT ]
|
[ DEL ]
📄 tipc.h
2,405 B
SET
[ EDIT ]
|
[ DEL ]
📄 tls.h
21,363 B
SET
[ EDIT ]
|
[ DEL ]
📄 tls_toe.h
3,006 B
SET
[ EDIT ]
|
[ DEL ]
📄 transp_v6.h
1,996 B
SET
[ EDIT ]
|
[ DEL ]
📄 tso.h
515 B
SET
[ EDIT ]
|
[ DEL ]
📄 tun_proto.h
988 B
SET
[ EDIT ]
|
[ DEL ]
📄 udp.h
16,481 B
SET
[ EDIT ]
|
[ DEL ]
📄 udp_tunnel.h
13,376 B
SET
[ EDIT ]
|
[ DEL ]
📄 udplite.h
3,762 B
SET
[ EDIT ]
|
[ DEL ]
📄 vsock_addr.h
662 B
SET
[ EDIT ]
|
[ DEL ]
📄 vxlan.h
13,541 B
SET
[ EDIT ]
|
[ DEL ]
📄 wext.h
1,510 B
SET
[ EDIT ]
|
[ DEL ]
📄 wimax.h
20,445 B
SET
[ EDIT ]
|
[ DEL ]
📄 x25.h
9,658 B
SET
[ EDIT ]
|
[ DEL ]
📄 x25device.h
387 B
SET
[ EDIT ]
|
[ DEL ]
📄 xdp.h
9,436 B
SET
[ EDIT ]
|
[ DEL ]
📄 xdp_priv.h
446 B
SET
[ EDIT ]
|
[ DEL ]
📄 xdp_sock.h
2,094 B
SET
[ EDIT ]
|
[ DEL ]
📄 xdp_sock_drv.h
6,423 B
SET
[ EDIT ]
|
[ DEL ]
📄 xfrm.h
59,628 B
SET
[ EDIT ]
|
[ DEL ]
📄 xsk_buff_pool.h
6,550 B
SET
[ EDIT ]
|
[ DEL ]
DELETE SELECTED
[ CLOSE ]
EDIT: udp.h
/* * INET An implementation of the TCP/IP protocol suite for the LINUX * operating system. INET is implemented using the BSD Socket * interface as the means of communication with the user level. * * Definitions for the UDP module. * * Version: @(#)udp.h 1.0.2 05/07/93 * * Authors: Ross Biro * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * * Fixes: * Alan Cox : Turned on udp checksums. I don't want to * chase 'memory corruption' bugs that aren't! * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _UDP_H #define _UDP_H #include <linux/list.h> #include <linux/bug.h> #include <net/inet_sock.h> #include <net/sock.h> #include <net/snmp.h> #include <net/ip.h> #include <linux/ipv6.h> #include <linux/seq_file.h> #include <linux/poll.h> #include <linux/indirect_call_wrapper.h> /** * struct udp_skb_cb - UDP(-Lite) private variables * * @header: private variables used by IPv4/IPv6 * @cscov: checksum coverage length (UDP-Lite only) * @partial_cov: if set indicates partial csum coverage */ struct udp_skb_cb { union { struct inet_skb_parm h4; #if IS_ENABLED(CONFIG_IPV6) struct inet6_skb_parm h6; #endif } header; __u16 cscov; __u8 partial_cov; }; #define UDP_SKB_CB(__skb) ((struct udp_skb_cb *)((__skb)->cb)) /** * struct udp_hslot - UDP hash slot * * @head: head of list of sockets * @count: number of sockets in 'head' list * @lock: spinlock protecting changes to head/count */ struct udp_hslot { struct hlist_head head; int count; spinlock_t lock; } __attribute__((aligned(2 * sizeof(long)))); /** * struct udp_table - UDP table * * @hash: hash table, sockets are hashed on (local port) * @hash2: hash table, sockets are hashed on (local port, local address) * @mask: number of slots in hash tables, minus 1 * @log: log2(number of slots in hash table) */ struct udp_table { struct udp_hslot *hash; struct udp_hslot *hash2; unsigned int mask; unsigned int log; }; extern struct udp_table udp_table; void udp_table_init(struct udp_table *, const char *); static inline struct udp_hslot *udp_hashslot(struct udp_table *table, struct net *net, unsigned int num) { return &table->hash[udp_hashfn(net, num, table->mask)]; } /* * For secondary hash, net_hash_mix() is performed before calling * udp_hashslot2(), this explains difference with udp_hashslot() */ static inline struct udp_hslot *udp_hashslot2(struct udp_table *table, unsigned int hash) { return &table->hash2[hash & table->mask]; } extern struct proto udp_prot; extern atomic_long_t udp_memory_allocated; /* sysctl variables for udp */ extern long sysctl_udp_mem[3]; extern int sysctl_udp_rmem_min; extern int sysctl_udp_wmem_min; struct sk_buff; /* * Generic checksumming routines for UDP(-Lite) v4 and v6 */ static inline __sum16 __udp_lib_checksum_complete(struct sk_buff *skb) { return (UDP_SKB_CB(skb)->cscov == skb->len ? __skb_checksum_complete(skb) : __skb_checksum_complete_head(skb, UDP_SKB_CB(skb)->cscov)); } static inline int udp_lib_checksum_complete(struct sk_buff *skb) { return !skb_csum_unnecessary(skb) && __udp_lib_checksum_complete(skb); } /** * udp_csum_outgoing - compute UDPv4/v6 checksum over fragments * @sk: socket we are writing to * @skb: sk_buff containing the filled-in UDP header * (checksum field must be zeroed out) */ static inline __wsum udp_csum_outgoing(struct sock *sk, struct sk_buff *skb) { __wsum csum = csum_partial(skb_transport_header(skb), sizeof(struct udphdr), 0); skb_queue_walk(&sk->sk_write_queue, skb) { csum = csum_add(csum, skb->csum); } return csum; } static inline __wsum udp_csum(struct sk_buff *skb) { __wsum csum = csum_partial(skb_transport_header(skb), sizeof(struct udphdr), skb->csum); for (skb = skb_shinfo(skb)->frag_list; skb; skb = skb->next) { csum = csum_add(csum, skb->csum); } return csum; } static inline __sum16 udp_v4_check(int len, __be32 saddr, __be32 daddr, __wsum base) { return csum_tcpudp_magic(saddr, daddr, len, IPPROTO_UDP, base); } void udp_set_csum(bool nocheck, struct sk_buff *skb, __be32 saddr, __be32 daddr, int len); static inline void udp_csum_pull_header(struct sk_buff *skb) { if (!skb->csum_valid && skb->ip_summed == CHECKSUM_NONE) skb->csum = csum_partial(skb->data, sizeof(struct udphdr), skb->csum); skb_pull_rcsum(skb, sizeof(struct udphdr)); UDP_SKB_CB(skb)->cscov -= sizeof(struct udphdr); } typedef struct sock *(*udp_lookup_t)(const struct sk_buff *skb, __be16 sport, __be16 dport); INDIRECT_CALLABLE_DECLARE(struct sk_buff *udp4_gro_receive(struct list_head *, struct sk_buff *)); INDIRECT_CALLABLE_DECLARE(int udp4_gro_complete(struct sk_buff *, int)); INDIRECT_CALLABLE_DECLARE(struct sk_buff *udp6_gro_receive(struct list_head *, struct sk_buff *)); INDIRECT_CALLABLE_DECLARE(int udp6_gro_complete(struct sk_buff *, int)); struct sk_buff *udp_gro_receive(struct list_head *head, struct sk_buff *skb, struct udphdr *uh, struct sock *sk); int udp_gro_complete(struct sk_buff *skb, int nhoff, udp_lookup_t lookup); struct sk_buff *__udp_gso_segment(struct sk_buff *gso_skb, netdev_features_t features, bool is_ipv6); static inline struct udphdr *udp_gro_udphdr(struct sk_buff *skb) { struct udphdr *uh; unsigned int hlen, off; off = skb_gro_offset(skb); hlen = off + sizeof(*uh); uh = skb_gro_header_fast(skb, off); if (skb_gro_header_hard(skb, hlen)) uh = skb_gro_header_slow(skb, hlen, off); return uh; } /* hash routines shared between UDPv4/6 and UDP-Litev4/6 */ static inline int udp_lib_hash(struct sock *sk) { BUG(); return 0; } void udp_lib_unhash(struct sock *sk); void udp_lib_rehash(struct sock *sk, u16 new_hash); static inline void udp_lib_close(struct sock *sk, long timeout) { sk_common_release(sk); } int udp_lib_get_port(struct sock *sk, unsigned short snum, unsigned int hash2_nulladdr); u32 udp_flow_hashrnd(void); static inline __be16 udp_flow_src_port(struct net *net, struct sk_buff *skb, int min, int max, bool use_eth) { u32 hash; if (min >= max) { /* Use default range */ inet_get_local_port_range(net, &min, &max); } hash = skb_get_hash(skb); if (unlikely(!hash)) { if (use_eth) { /* Can't find a normal hash, caller has indicated an * Ethernet packet so use that to compute a hash. */ hash = jhash(skb->data, 2 * ETH_ALEN, (__force u32) skb->protocol); } else { /* Can't derive any sort of hash for the packet, set * to some consistent random value. */ hash = udp_flow_hashrnd(); } } /* Since this is being sent on the wire obfuscate hash a bit * to minimize possbility that any useful information to an * attacker is leaked. Only upper 16 bits are relevant in the * computation for 16 bit port value. */ hash ^= hash << 16; return htons((((u64) hash * (max - min)) >> 32) + min); } static inline int udp_rqueue_get(struct sock *sk) { return sk_rmem_alloc_get(sk) - READ_ONCE(udp_sk(sk)->forward_deficit); } static inline bool udp_sk_bound_dev_eq(struct net *net, int bound_dev_if, int dif, int sdif) { #if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV) return inet_bound_dev_eq(!!READ_ONCE(net->ipv4.sysctl_udp_l3mdev_accept), bound_dev_if, dif, sdif); #else return inet_bound_dev_eq(true, bound_dev_if, dif, sdif); #endif } /* net/ipv4/udp.c */ void udp_destruct_common(struct sock *sk); void skb_consume_udp(struct sock *sk, struct sk_buff *skb, int len); int __udp_enqueue_schedule_skb(struct sock *sk, struct sk_buff *skb); void udp_skb_destructor(struct sock *sk, struct sk_buff *skb); struct sk_buff *__skb_recv_udp(struct sock *sk, unsigned int flags, int noblock, int *off, int *err); static inline struct sk_buff *skb_recv_udp(struct sock *sk, unsigned int flags, int noblock, int *err) { int off = 0; return __skb_recv_udp(sk, flags, noblock, &off, err); } int udp_v4_early_demux(struct sk_buff *skb); bool udp_sk_rx_dst_set(struct sock *sk, struct dst_entry *dst); int udp_get_port(struct sock *sk, unsigned short snum, int (*saddr_cmp)(const struct sock *, const struct sock *)); int udp_err(struct sk_buff *, u32); int udp_abort(struct sock *sk, int err); int udp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len); int udp_push_pending_frames(struct sock *sk); void udp_flush_pending_frames(struct sock *sk); int udp_cmsg_send(struct sock *sk, struct msghdr *msg, u16 *gso_size); void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst); int udp_rcv(struct sk_buff *skb); int udp_ioctl(struct sock *sk, int cmd, unsigned long arg); int udp_init_sock(struct sock *sk); int udp_pre_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len); int __udp_disconnect(struct sock *sk, int flags); int udp_disconnect(struct sock *sk, int flags); __poll_t udp_poll(struct file *file, struct socket *sock, poll_table *wait); struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, netdev_features_t features, bool is_ipv6); int udp_lib_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen); int udp_lib_setsockopt(struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen, int (*push_pending_frames)(struct sock *)); struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, __be32 daddr, __be16 dport, int dif); struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, __be32 daddr, __be16 dport, int dif, int sdif, struct udp_table *tbl, struct sk_buff *skb); struct sock *udp4_lib_lookup_skb(const struct sk_buff *skb, __be16 sport, __be16 dport); struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport, const struct in6_addr *daddr, __be16 dport, int dif); struct sock *__udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport, const struct in6_addr *daddr, __be16 dport, int dif, int sdif, struct udp_table *tbl, struct sk_buff *skb); struct sock *udp6_lib_lookup_skb(const struct sk_buff *skb, __be16 sport, __be16 dport); int udp_read_sock(struct sock *sk, read_descriptor_t *desc, sk_read_actor_t recv_actor); /* UDP uses skb->dev_scratch to cache as much information as possible and avoid * possibly multiple cache miss on dequeue() */ struct udp_dev_scratch { /* skb->truesize and the stateless bit are embedded in a single field; * do not use a bitfield since the compiler emits better/smaller code * this way */ u32 _tsize_state; #if BITS_PER_LONG == 64 /* len and the bit needed to compute skb_csum_unnecessary * will be on cold cache lines at recvmsg time. * skb->len can be stored on 16 bits since the udp header has been * already validated and pulled. */ u16 len; bool is_linear; bool csum_unnecessary; #endif }; static inline struct udp_dev_scratch *udp_skb_scratch(struct sk_buff *skb) { return (struct udp_dev_scratch *)&skb->dev_scratch; } #if BITS_PER_LONG == 64 static inline unsigned int udp_skb_len(struct sk_buff *skb) { return udp_skb_scratch(skb)->len; } static inline bool udp_skb_csum_unnecessary(struct sk_buff *skb) { return udp_skb_scratch(skb)->csum_unnecessary; } static inline bool udp_skb_is_linear(struct sk_buff *skb) { return udp_skb_scratch(skb)->is_linear; } #else static inline unsigned int udp_skb_len(struct sk_buff *skb) { return skb->len; } static inline bool udp_skb_csum_unnecessary(struct sk_buff *skb) { return skb_csum_unnecessary(skb); } static inline bool udp_skb_is_linear(struct sk_buff *skb) { return !skb_is_nonlinear(skb); } #endif static inline int copy_linear_skb(struct sk_buff *skb, int len, int off, struct iov_iter *to) { int n; n = copy_to_iter(skb->data + off, len, to); if (n == len) return 0; iov_iter_revert(to, n); return -EFAULT; } /* * SNMP statistics for UDP and UDP-Lite */ #define UDP_INC_STATS(net, field, is_udplite) do { \ if (is_udplite) SNMP_INC_STATS((net)->mib.udplite_statistics, field); \ else SNMP_INC_STATS((net)->mib.udp_statistics, field); } while(0) #define __UDP_INC_STATS(net, field, is_udplite) do { \ if (is_udplite) __SNMP_INC_STATS((net)->mib.udplite_statistics, field); \ else __SNMP_INC_STATS((net)->mib.udp_statistics, field); } while(0) #define __UDP6_INC_STATS(net, field, is_udplite) do { \ if (is_udplite) __SNMP_INC_STATS((net)->mib.udplite_stats_in6, field);\ else __SNMP_INC_STATS((net)->mib.udp_stats_in6, field); \ } while(0) #define UDP6_INC_STATS(net, field, __lite) do { \ if (__lite) SNMP_INC_STATS((net)->mib.udplite_stats_in6, field); \ else SNMP_INC_STATS((net)->mib.udp_stats_in6, field); \ } while(0) #if IS_ENABLED(CONFIG_IPV6) #define __UDPX_MIB(sk, ipv4) \ ({ \ ipv4 ? (IS_UDPLITE(sk) ? sock_net(sk)->mib.udplite_statistics : \ sock_net(sk)->mib.udp_statistics) : \ (IS_UDPLITE(sk) ? sock_net(sk)->mib.udplite_stats_in6 : \ sock_net(sk)->mib.udp_stats_in6); \ }) #else #define __UDPX_MIB(sk, ipv4) \ ({ \ IS_UDPLITE(sk) ? sock_net(sk)->mib.udplite_statistics : \ sock_net(sk)->mib.udp_statistics; \ }) #endif #define __UDPX_INC_STATS(sk, field) \ __SNMP_INC_STATS(__UDPX_MIB(sk, (sk)->sk_family == AF_INET), field) #ifdef CONFIG_PROC_FS struct udp_seq_afinfo { sa_family_t family; struct udp_table *udp_table; }; struct udp_iter_state { struct seq_net_private p; int bucket; struct udp_seq_afinfo *bpf_seq_afinfo; }; void *udp_seq_start(struct seq_file *seq, loff_t *pos); void *udp_seq_next(struct seq_file *seq, void *v, loff_t *pos); void udp_seq_stop(struct seq_file *seq, void *v); extern const struct seq_operations udp_seq_ops; extern const struct seq_operations udp6_seq_ops; int udp4_proc_init(void); void udp4_proc_exit(void); #endif /* CONFIG_PROC_FS */ int udpv4_offload_init(void); void udp_init(void); DECLARE_STATIC_KEY_FALSE(udp_encap_needed_key); void udp_encap_enable(void); void udp_encap_disable(void); #if IS_ENABLED(CONFIG_IPV6) DECLARE_STATIC_KEY_FALSE(udpv6_encap_needed_key); void udpv6_encap_enable(void); #endif static inline struct sk_buff *udp_rcv_segment(struct sock *sk, struct sk_buff *skb, bool ipv4) { netdev_features_t features = NETIF_F_SG; struct sk_buff *segs; /* Avoid csum recalculation by skb_segment unless userspace explicitly * asks for the final checksum values */ if (!inet_get_convert_csum(sk)) features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; if (skb->pkt_type == PACKET_LOOPBACK) skb->ip_summed = CHECKSUM_PARTIAL; /* the GSO CB lays after the UDP one, no need to save and restore any * CB fragment */ segs = __skb_gso_segment(skb, features, false); if (unlikely(IS_ERR_OR_NULL(segs))) { int segs_nr = skb_shinfo(skb)->gso_segs; atomic_add(segs_nr, &sk->sk_drops); SNMP_ADD_STATS(__UDPX_MIB(sk, ipv4), UDP_MIB_INERRORS, segs_nr); kfree_skb(skb); return NULL; } consume_skb(skb); return segs; } static inline void udp_post_segment_fix_csum(struct sk_buff *skb) { /* UDP-lite can't land here - no GRO */ WARN_ON_ONCE(UDP_SKB_CB(skb)->partial_cov); /* UDP packets generated with UDP_SEGMENT and traversing: * * UDP tunnel(xmit) -> veth (segmentation) -> veth (gro) -> UDP tunnel (rx) * * can reach an UDP socket with CHECKSUM_NONE, because * __iptunnel_pull_header() converts CHECKSUM_PARTIAL into NONE. * SKB_GSO_UDP_L4 or SKB_GSO_FRAGLIST packets with no UDP tunnel will * have a valid checksum, as the GRO engine validates the UDP csum * before the aggregation and nobody strips such info in between. * Instead of adding another check in the tunnel fastpath, we can force * a valid csum after the segmentation. * Additionally fixup the UDP CB. */ UDP_SKB_CB(skb)->cscov = skb->len; if (skb->ip_summed == CHECKSUM_NONE && !skb->csum_valid) skb->csum_valid = 1; } #ifdef CONFIG_BPF_SYSCALL struct sk_psock; struct proto *udp_bpf_get_proto(struct sock *sk, struct sk_psock *psock); int udp_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool restore); #endif #endif /* _UDP_H */