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net/ipv4/af_inet.c
42.7 KB
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/* * 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. * * PF_INET protocol family socket handler. * |
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* Authors: Ross Biro |
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * Florian La Roche, <flla@stud.uni-sb.de> * Alan Cox, <A.Cox@swansea.ac.uk> * * Changes (see also sock.c) * * piggy, * Karl Knutson : Socket protocol table * A.N.Kuznetsov : Socket death error in accept(). * John Richardson : Fix non blocking error in connect() * so sockets that fail to connect * don't return -EINPROGRESS. * Alan Cox : Asynchronous I/O support * Alan Cox : Keep correct socket pointer on sock * structures * when accept() ed * Alan Cox : Semantics of SO_LINGER aren't state * moved to close when you look carefully. * With this fixed and the accept bug fixed * some RPC stuff seems happier. * Niibe Yutaka : 4.4BSD style write async I/O * Alan Cox, * Tony Gale : Fixed reuse semantics. * Alan Cox : bind() shouldn't abort existing but dead * sockets. Stops FTP netin:.. I hope. * Alan Cox : bind() works correctly for RAW sockets. * Note that FreeBSD at least was broken * in this respect so be careful with * compatibility tests... * Alan Cox : routing cache support * Alan Cox : memzero the socket structure for * compactness. * Matt Day : nonblock connect error handler * Alan Cox : Allow large numbers of pending sockets * (eg for big web sites), but only if * specifically application requested. * Alan Cox : New buffering throughout IP. Used * dumbly. * Alan Cox : New buffering now used smartly. * Alan Cox : BSD rather than common sense * interpretation of listen. * Germano Caronni : Assorted small races. * Alan Cox : sendmsg/recvmsg basic support. * Alan Cox : Only sendmsg/recvmsg now supported. * Alan Cox : Locked down bind (see security list). * Alan Cox : Loosened bind a little. * Mike McLagan : ADD/DEL DLCI Ioctls * Willy Konynenberg : Transparent proxying support. * David S. Miller : New socket lookup architecture. * Some other random speedups. * Cyrus Durgin : Cleaned up file for kmod hacks. * Andi Kleen : Fix inet_stream_connect TCP race. * * 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. */ |
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#include <linux/err.h> |
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#include <linux/errno.h> #include <linux/types.h> #include <linux/socket.h> #include <linux/in.h> #include <linux/kernel.h> |
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#include <linux/module.h> #include <linux/sched.h> #include <linux/timer.h> #include <linux/string.h> #include <linux/sockios.h> #include <linux/net.h> |
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#include <linux/capability.h> |
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#include <linux/fcntl.h> #include <linux/mm.h> #include <linux/interrupt.h> #include <linux/stat.h> #include <linux/init.h> #include <linux/poll.h> #include <linux/netfilter_ipv4.h> |
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#include <linux/random.h> |
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#include <linux/slab.h> |
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#include <asm/uaccess.h> #include <asm/system.h> |
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#include <linux/inet.h> #include <linux/igmp.h> |
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#include <linux/inetdevice.h> |
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#include <linux/netdevice.h> |
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#include <net/checksum.h> |
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#include <net/ip.h> #include <net/protocol.h> #include <net/arp.h> #include <net/route.h> #include <net/ip_fib.h> |
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#include <net/inet_connection_sock.h> |
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#include <net/tcp.h> #include <net/udp.h> |
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#include <net/udplite.h> |
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#include <net/ping.h> |
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#include <linux/skbuff.h> #include <net/sock.h> #include <net/raw.h> #include <net/icmp.h> #include <net/ipip.h> #include <net/inet_common.h> #include <net/xfrm.h> |
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#include <net/net_namespace.h> |
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#ifdef CONFIG_IP_MROUTE #include <linux/mroute.h> #endif |
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/* The inetsw table contains everything that inet_create needs to * build a new socket. */ static struct list_head inetsw[SOCK_MAX]; static DEFINE_SPINLOCK(inetsw_lock); |
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struct ipv4_config ipv4_config; |
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EXPORT_SYMBOL(ipv4_config); |
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/* New destruction routine */ void inet_sock_destruct(struct sock *sk) { struct inet_sock *inet = inet_sk(sk); __skb_queue_purge(&sk->sk_receive_queue); __skb_queue_purge(&sk->sk_error_queue); |
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sk_mem_reclaim(sk); |
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if (sk->sk_type == SOCK_STREAM && sk->sk_state != TCP_CLOSE) { |
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pr_err("Attempt to release TCP socket in state %d %p ", |
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sk->sk_state, sk); return; } if (!sock_flag(sk, SOCK_DEAD)) { |
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pr_err("Attempt to release alive inet socket %p ", sk); |
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return; } |
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WARN_ON(atomic_read(&sk->sk_rmem_alloc)); WARN_ON(atomic_read(&sk->sk_wmem_alloc)); WARN_ON(sk->sk_wmem_queued); WARN_ON(sk->sk_forward_alloc); |
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|
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kfree(rcu_dereference_protected(inet->inet_opt, 1)); |
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dst_release(rcu_dereference_check(sk->sk_dst_cache, 1)); |
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sk_refcnt_debug_dec(sk); |
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} |
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EXPORT_SYMBOL(inet_sock_destruct); |
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/* * The routines beyond this point handle the behaviour of an AF_INET * socket object. Mostly it punts to the subprotocols of IP to do * the work. */ /* * Automatically bind an unbound socket. */ static int inet_autobind(struct sock *sk) { struct inet_sock *inet; /* We may need to bind the socket. */ lock_sock(sk); inet = inet_sk(sk); |
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if (!inet->inet_num) { |
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if (sk->sk_prot->get_port(sk, 0)) { release_sock(sk); return -EAGAIN; } |
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inet->inet_sport = htons(inet->inet_num); |
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} release_sock(sk); return 0; } /* * Move a socket into listening state. */ int inet_listen(struct socket *sock, int backlog) { struct sock *sk = sock->sk; unsigned char old_state; int err; lock_sock(sk); err = -EINVAL; if (sock->state != SS_UNCONNECTED || sock->type != SOCK_STREAM) goto out; old_state = sk->sk_state; if (!((1 << old_state) & (TCPF_CLOSE | TCPF_LISTEN))) goto out; /* Really, if the socket is already in listen state * we can only allow the backlog to be adjusted. */ if (old_state != TCP_LISTEN) { |
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err = inet_csk_listen_start(sk, backlog); |
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if (err) goto out; } sk->sk_max_ack_backlog = backlog; err = 0; out: release_sock(sk); return err; } |
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EXPORT_SYMBOL(inet_listen); |
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|
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u32 inet_ehash_secret __read_mostly; |
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EXPORT_SYMBOL(inet_ehash_secret); |
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/* * inet_ehash_secret must be set exactly once |
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*/ |
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void build_ehash_secret(void) { |
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u32 rnd; |
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|
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do { get_random_bytes(&rnd, sizeof(rnd)); } while (rnd == 0); |
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cmpxchg(&inet_ehash_secret, 0, rnd); |
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} EXPORT_SYMBOL(build_ehash_secret); |
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static inline int inet_netns_ok(struct net *net, int protocol) { int hash; |
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const struct net_protocol *ipprot; |
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|
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if (net_eq(net, &init_net)) |
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return 1; hash = protocol & (MAX_INET_PROTOS - 1); ipprot = rcu_dereference(inet_protos[hash]); if (ipprot == NULL) /* raw IP is OK */ return 1; return ipprot->netns_ok; } |
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/* * Create an inet socket. */ |
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static int inet_create(struct net *net, struct socket *sock, int protocol, int kern) |
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{ struct sock *sk; |
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struct inet_protosw *answer; struct inet_sock *inet; struct proto *answer_prot; unsigned char answer_flags; char answer_no_check; |
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int try_loading_module = 0; |
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int err; |
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|
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if (unlikely(!inet_ehash_secret)) if (sock->type != SOCK_RAW && sock->type != SOCK_DGRAM) build_ehash_secret(); |
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|
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sock->state = SS_UNCONNECTED; /* Look for the requested type/protocol pair. */ |
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lookup_protocol: |
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err = -ESOCKTNOSUPPORT; |
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rcu_read_lock(); |
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list_for_each_entry_rcu(answer, &inetsw[sock->type], list) { |
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|
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err = 0; |
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/* Check the non-wild match. */ if (protocol == answer->protocol) { if (protocol != IPPROTO_IP) break; } else { /* Check for the two wild cases. */ if (IPPROTO_IP == protocol) { protocol = answer->protocol; break; } if (IPPROTO_IP == answer->protocol) break; } |
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err = -EPROTONOSUPPORT; |
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} |
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if (unlikely(err)) { |
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if (try_loading_module < 2) { rcu_read_unlock(); /* * Be more specific, e.g. net-pf-2-proto-132-type-1 * (net-pf-PF_INET-proto-IPPROTO_SCTP-type-SOCK_STREAM) */ if (++try_loading_module == 1) request_module("net-pf-%d-proto-%d-type-%d", PF_INET, protocol, sock->type); /* * Fall back to generic, e.g. net-pf-2-proto-132 * (net-pf-PF_INET-proto-IPPROTO_SCTP) */ else request_module("net-pf-%d-proto-%d", PF_INET, protocol); goto lookup_protocol; } else goto out_rcu_unlock; } |
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err = -EPERM; |
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if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) |
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goto out_rcu_unlock; |
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|
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err = -EAFNOSUPPORT; if (!inet_netns_ok(net, protocol)) goto out_rcu_unlock; |
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sock->ops = answer->ops; answer_prot = answer->prot; answer_no_check = answer->no_check; answer_flags = answer->flags; rcu_read_unlock(); |
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WARN_ON(answer_prot->slab == NULL); |
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err = -ENOBUFS; |
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sk = sk_alloc(net, PF_INET, GFP_KERNEL, answer_prot); |
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if (sk == NULL) goto out; err = 0; sk->sk_no_check = answer_no_check; if (INET_PROTOSW_REUSE & answer_flags) sk->sk_reuse = 1; inet = inet_sk(sk); |
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inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; |
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|
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inet->nodefrag = 0; |
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if (SOCK_RAW == sock->type) { |
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inet->inet_num = protocol; |
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if (IPPROTO_RAW == protocol) inet->hdrincl = 1; } if (ipv4_config.no_pmtu_disc) inet->pmtudisc = IP_PMTUDISC_DONT; else inet->pmtudisc = IP_PMTUDISC_WANT; |
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inet->inet_id = 0; |
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sock_init_data(sock, sk); sk->sk_destruct = inet_sock_destruct; |
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sk->sk_protocol = protocol; sk->sk_backlog_rcv = sk->sk_prot->backlog_rcv; inet->uc_ttl = -1; inet->mc_loop = 1; inet->mc_ttl = 1; |
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inet->mc_all = 1; |
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inet->mc_index = 0; inet->mc_list = NULL; |
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sk_refcnt_debug_inc(sk); |
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|
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if (inet->inet_num) { |
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/* It assumes that any protocol which allows * the user to assign a number at socket * creation time automatically * shares. */ |
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inet->inet_sport = htons(inet->inet_num); |
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/* Add to protocol hash chains. */ sk->sk_prot->hash(sk); } if (sk->sk_prot->init) { err = sk->sk_prot->init(sk); if (err) sk_common_release(sk); } out: return err; out_rcu_unlock: rcu_read_unlock(); goto out; } /* * The peer socket should always be NULL (or else). When we call this * function we are destroying the object and from then on nobody * should refer to it. */ int inet_release(struct socket *sock) { struct sock *sk = sock->sk; if (sk) { long timeout; |
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sock_rps_reset_flow(sk); |
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|
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/* Applications forget to leave groups before exiting */ ip_mc_drop_socket(sk); /* If linger is set, we don't return until the close * is complete. Otherwise we return immediately. The * actually closing is done the same either way. * * If the close is due to the process exiting, we never * linger.. */ timeout = 0; if (sock_flag(sk, SOCK_LINGER) && !(current->flags & PF_EXITING)) timeout = sk->sk_lingertime; sock->sk = NULL; sk->sk_prot->close(sk, timeout); } return 0; } |
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EXPORT_SYMBOL(inet_release); |
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/* It is off by default, see below. */ |
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int sysctl_ip_nonlocal_bind __read_mostly; |
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EXPORT_SYMBOL(sysctl_ip_nonlocal_bind); |
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int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) { struct sockaddr_in *addr = (struct sockaddr_in *)uaddr; struct sock *sk = sock->sk; struct inet_sock *inet = inet_sk(sk); unsigned short snum; int chk_addr_ret; int err; /* If the socket has its own bind function then use it. (RAW) */ if (sk->sk_prot->bind) { err = sk->sk_prot->bind(sk, uaddr, addr_len); goto out; } err = -EINVAL; if (addr_len < sizeof(struct sockaddr_in)) goto out; |
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if (addr->sin_family != AF_INET) { |
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/* Compatibility games : accept AF_UNSPEC (mapped to AF_INET) * only if s_addr is INADDR_ANY. */ |
c349a528c net: bind() fix e... |
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err = -EAFNOSUPPORT; |
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if (addr->sin_family != AF_UNSPEC || addr->sin_addr.s_addr != htonl(INADDR_ANY)) goto out; |
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} |
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|
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chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr); |
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/* Not specified by any standard per-se, however it breaks too * many applications when removed. It is unfortunate since * allowing applications to make a non-local bind solves * several problems with systems using dynamic addressing. * (ie. your servers still start up even if your ISDN link * is temporarily down) */ err = -EADDRNOTAVAIL; if (!sysctl_ip_nonlocal_bind && |
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!(inet->freebind || inet->transparent) && |
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addr->sin_addr.s_addr != htonl(INADDR_ANY) && |
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chk_addr_ret != RTN_LOCAL && chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST) goto out; snum = ntohs(addr->sin_port); err = -EACCES; if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE)) goto out; /* We keep a pair of addresses. rcv_saddr is the one * used by hash lookups, and saddr is used for transmit. * * In the BSD API these are the same except where it * would be illegal to use them (multicast/broadcast) in * which case the sending device address is used. */ lock_sock(sk); /* Check these errors (active socket, double bind). */ err = -EINVAL; |
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if (sk->sk_state != TCP_CLOSE || inet->inet_num) |
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goto out_release_sock; |
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inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr; |
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if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST) |
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inet->inet_saddr = 0; /* Use device */ |
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/* Make sure we are allowed to bind here. */ if (sk->sk_prot->get_port(sk, snum)) { |
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inet->inet_saddr = inet->inet_rcv_saddr = 0; |
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err = -EADDRINUSE; goto out_release_sock; } |
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if (inet->inet_rcv_saddr) |
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sk->sk_userlocks |= SOCK_BINDADDR_LOCK; if (snum) sk->sk_userlocks |= SOCK_BINDPORT_LOCK; |
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inet->inet_sport = htons(inet->inet_num); inet->inet_daddr = 0; inet->inet_dport = 0; |
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sk_dst_reset(sk); err = 0; out_release_sock: release_sock(sk); out: return err; } |
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519 |
EXPORT_SYMBOL(inet_bind); |
1da177e4c Linux-2.6.12-rc2 |
520 521 522 523 524 |
int inet_dgram_connect(struct socket *sock, struct sockaddr * uaddr, int addr_len, int flags) { struct sock *sk = sock->sk; |
6503d9616 net: check the le... |
525 526 |
if (addr_len < sizeof(uaddr->sa_family)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
527 528 |
if (uaddr->sa_family == AF_UNSPEC) return sk->sk_prot->disconnect(sk, flags); |
c720c7e83 inet: rename some... |
529 |
if (!inet_sk(sk)->inet_num && inet_autobind(sk)) |
1da177e4c Linux-2.6.12-rc2 |
530 531 532 |
return -EAGAIN; return sk->sk_prot->connect(sk, (struct sockaddr *)uaddr, addr_len); } |
3d1427f87 ipv4: af_inet.c c... |
533 |
EXPORT_SYMBOL(inet_dgram_connect); |
1da177e4c Linux-2.6.12-rc2 |
534 535 536 537 |
static long inet_wait_for_connect(struct sock *sk, long timeo) { DEFINE_WAIT(wait); |
aa3951451 net: sk_sleep() h... |
538 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c Linux-2.6.12-rc2 |
539 540 541 542 543 544 545 546 547 548 549 550 |
/* Basic assumption: if someone sets sk->sk_err, he _must_ * change state of the socket from TCP_SYN_*. * Connect() does not allow to get error notifications * without closing the socket. */ while ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) { release_sock(sk); timeo = schedule_timeout(timeo); lock_sock(sk); if (signal_pending(current) || !timeo) break; |
aa3951451 net: sk_sleep() h... |
551 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c Linux-2.6.12-rc2 |
552 |
} |
aa3951451 net: sk_sleep() h... |
553 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c Linux-2.6.12-rc2 |
554 555 556 557 558 559 560 561 562 563 564 565 566 |
return timeo; } /* * Connect to a remote host. There is regrettably still a little * TCP 'magic' in here. */ int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) { struct sock *sk = sock->sk; int err; long timeo; |
6503d9616 net: check the le... |
567 568 |
if (addr_len < sizeof(uaddr->sa_family)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 |
lock_sock(sk); if (uaddr->sa_family == AF_UNSPEC) { err = sk->sk_prot->disconnect(sk, flags); sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED; goto out; } switch (sock->state) { default: err = -EINVAL; goto out; case SS_CONNECTED: err = -EISCONN; goto out; case SS_CONNECTING: err = -EALREADY; /* Fall out of switch with err, set for this state */ break; case SS_UNCONNECTED: err = -EISCONN; if (sk->sk_state != TCP_CLOSE) goto out; err = sk->sk_prot->connect(sk, uaddr, addr_len); if (err < 0) goto out; |
e905a9eda [NET] IPV4: Fix w... |
596 |
sock->state = SS_CONNECTING; |
1da177e4c Linux-2.6.12-rc2 |
597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 |
/* Just entered SS_CONNECTING state; the only * difference is that return value in non-blocking * case is EINPROGRESS, rather than EALREADY. */ err = -EINPROGRESS; break; } timeo = sock_sndtimeo(sk, flags & O_NONBLOCK); if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) { /* Error code is set above */ if (!timeo || !inet_wait_for_connect(sk, timeo)) goto out; err = sock_intr_errno(timeo); if (signal_pending(current)) goto out; } /* Connection was closed by RST, timeout, ICMP error * or another process disconnected us. */ if (sk->sk_state == TCP_CLOSE) goto sock_error; /* sk->sk_err may be not zero now, if RECVERR was ordered by user * and error was received after socket entered established state. * Hence, it is handled normally after connect() return successfully. */ sock->state = SS_CONNECTED; err = 0; out: release_sock(sk); return err; sock_error: err = sock_error(sk) ? : -ECONNABORTED; sock->state = SS_UNCONNECTED; if (sk->sk_prot->disconnect(sk, flags)) sock->state = SS_DISCONNECTING; goto out; } |
3d1427f87 ipv4: af_inet.c c... |
642 |
EXPORT_SYMBOL(inet_stream_connect); |
1da177e4c Linux-2.6.12-rc2 |
643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 |
/* * Accept a pending connection. The TCP layer now gives BSD semantics. */ int inet_accept(struct socket *sock, struct socket *newsock, int flags) { struct sock *sk1 = sock->sk; int err = -EINVAL; struct sock *sk2 = sk1->sk_prot->accept(sk1, flags, &err); if (!sk2) goto do_err; lock_sock(sk2); |
1eddceadb net: rfs: enable ... |
658 |
sock_rps_record_flow(sk2); |
547b792ca net: convert BUG_... |
659 660 |
WARN_ON(!((1 << sk2->sk_state) & (TCPF_ESTABLISHED | TCPF_CLOSE_WAIT | TCPF_CLOSE))); |
1da177e4c Linux-2.6.12-rc2 |
661 662 663 664 665 666 667 668 669 |
sock_graft(sk2, newsock); newsock->state = SS_CONNECTED; err = 0; release_sock(sk2); do_err: return err; } |
3d1427f87 ipv4: af_inet.c c... |
670 |
EXPORT_SYMBOL(inet_accept); |
1da177e4c Linux-2.6.12-rc2 |
671 672 673 674 675 676 677 678 679 680 |
/* * This does both peername and sockname. */ int inet_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer) { struct sock *sk = sock->sk; struct inet_sock *inet = inet_sk(sk); |
38bfd8f5b net,socket: intro... |
681 |
DECLARE_SOCKADDR(struct sockaddr_in *, sin, uaddr); |
1da177e4c Linux-2.6.12-rc2 |
682 683 684 |
sin->sin_family = AF_INET; if (peer) { |
c720c7e83 inet: rename some... |
685 |
if (!inet->inet_dport || |
1da177e4c Linux-2.6.12-rc2 |
686 687 688 |
(((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) && peer == 1)) return -ENOTCONN; |
c720c7e83 inet: rename some... |
689 690 |
sin->sin_port = inet->inet_dport; sin->sin_addr.s_addr = inet->inet_daddr; |
1da177e4c Linux-2.6.12-rc2 |
691 |
} else { |
c720c7e83 inet: rename some... |
692 |
__be32 addr = inet->inet_rcv_saddr; |
1da177e4c Linux-2.6.12-rc2 |
693 |
if (!addr) |
c720c7e83 inet: rename some... |
694 695 |
addr = inet->inet_saddr; sin->sin_port = inet->inet_sport; |
1da177e4c Linux-2.6.12-rc2 |
696 697 698 699 700 701 |
sin->sin_addr.s_addr = addr; } memset(sin->sin_zero, 0, sizeof(sin->sin_zero)); *uaddr_len = sizeof(*sin); return 0; } |
3d1427f87 ipv4: af_inet.c c... |
702 |
EXPORT_SYMBOL(inet_getname); |
1da177e4c Linux-2.6.12-rc2 |
703 704 705 706 707 |
int inet_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size) { struct sock *sk = sock->sk; |
c58dc01ba net: Make RFS soc... |
708 |
sock_rps_record_flow(sk); |
fec5e652e rfs: Receive Flow... |
709 |
|
1da177e4c Linux-2.6.12-rc2 |
710 |
/* We may need to bind the socket. */ |
7ba429100 inet, inet6: make... |
711 712 |
if (!inet_sk(sk)->inet_num && !sk->sk_prot->no_autobind && inet_autobind(sk)) |
1da177e4c Linux-2.6.12-rc2 |
713 714 715 716 |
return -EAGAIN; return sk->sk_prot->sendmsg(iocb, sk, msg, size); } |
3d1427f87 ipv4: af_inet.c c... |
717 |
EXPORT_SYMBOL(inet_sendmsg); |
1da177e4c Linux-2.6.12-rc2 |
718 |
|
7ba429100 inet, inet6: make... |
719 720 |
ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags) |
1da177e4c Linux-2.6.12-rc2 |
721 722 |
{ struct sock *sk = sock->sk; |
c58dc01ba net: Make RFS soc... |
723 |
sock_rps_record_flow(sk); |
fec5e652e rfs: Receive Flow... |
724 |
|
1da177e4c Linux-2.6.12-rc2 |
725 |
/* We may need to bind the socket. */ |
7ba429100 inet, inet6: make... |
726 727 |
if (!inet_sk(sk)->inet_num && !sk->sk_prot->no_autobind && inet_autobind(sk)) |
1da177e4c Linux-2.6.12-rc2 |
728 729 730 731 732 733 |
return -EAGAIN; if (sk->sk_prot->sendpage) return sk->sk_prot->sendpage(sk, page, offset, size, flags); return sock_no_sendpage(sock, page, offset, size, flags); } |
7ba429100 inet, inet6: make... |
734 |
EXPORT_SYMBOL(inet_sendpage); |
1da177e4c Linux-2.6.12-rc2 |
735 |
|
fec5e652e rfs: Receive Flow... |
736 737 738 739 740 741 |
int inet_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size, int flags) { struct sock *sk = sock->sk; int addr_len = 0; int err; |
c58dc01ba net: Make RFS soc... |
742 |
sock_rps_record_flow(sk); |
fec5e652e rfs: Receive Flow... |
743 744 745 746 747 748 749 750 |
err = sk->sk_prot->recvmsg(iocb, sk, msg, size, flags & MSG_DONTWAIT, flags & ~MSG_DONTWAIT, &addr_len); if (err >= 0) msg->msg_namelen = addr_len; return err; } EXPORT_SYMBOL(inet_recvmsg); |
1da177e4c Linux-2.6.12-rc2 |
751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 |
int inet_shutdown(struct socket *sock, int how) { struct sock *sk = sock->sk; int err = 0; /* This should really check to make sure * the socket is a TCP socket. (WHY AC...) */ how++; /* maps 0->1 has the advantage of making bit 1 rcvs and 1->2 bit 2 snds. 2->3 */ if ((how & ~SHUTDOWN_MASK) || !how) /* MAXINT->0 */ return -EINVAL; lock_sock(sk); if (sock->state == SS_CONNECTING) { if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV | TCPF_CLOSE)) sock->state = SS_DISCONNECTING; else sock->state = SS_CONNECTED; } switch (sk->sk_state) { case TCP_CLOSE: err = -ENOTCONN; /* Hack to wake up other listeners, who can poll for POLLHUP, even on eg. unconnected UDP sockets -- RR */ default: sk->sk_shutdown |= how; if (sk->sk_prot->shutdown) sk->sk_prot->shutdown(sk, how); break; /* Remaining two branches are temporary solution for missing * close() in multithreaded environment. It is _not_ a good idea, * but we have no choice until close() is repaired at VFS level. */ case TCP_LISTEN: if (!(how & RCV_SHUTDOWN)) break; /* Fall through */ case TCP_SYN_SENT: err = sk->sk_prot->disconnect(sk, O_NONBLOCK); sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED; break; } /* Wake up anyone sleeping in poll. */ sk->sk_state_change(sk); release_sock(sk); return err; } |
3d1427f87 ipv4: af_inet.c c... |
805 |
EXPORT_SYMBOL(inet_shutdown); |
1da177e4c Linux-2.6.12-rc2 |
806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 |
/* * ioctl() calls you can issue on an INET socket. Most of these are * device configuration and stuff and very rarely used. Some ioctls * pass on to the socket itself. * * NOTE: I like the idea of a module for the config stuff. ie ifconfig * loads the devconfigure module does its configuring and unloads it. * There's a good 20K of config code hanging around the kernel. */ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { struct sock *sk = sock->sk; int err = 0; |
3b1e0a655 [NET] NETNS: Omit... |
821 |
struct net *net = sock_net(sk); |
1da177e4c Linux-2.6.12-rc2 |
822 823 |
switch (cmd) { |
3d1427f87 ipv4: af_inet.c c... |
824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 |
case SIOCGSTAMP: err = sock_get_timestamp(sk, (struct timeval __user *)arg); break; case SIOCGSTAMPNS: err = sock_get_timestampns(sk, (struct timespec __user *)arg); break; case SIOCADDRT: case SIOCDELRT: case SIOCRTMSG: err = ip_rt_ioctl(net, cmd, (void __user *)arg); break; case SIOCDARP: case SIOCGARP: case SIOCSARP: err = arp_ioctl(net, cmd, (void __user *)arg); break; case SIOCGIFADDR: case SIOCSIFADDR: case SIOCGIFBRDADDR: case SIOCSIFBRDADDR: case SIOCGIFNETMASK: case SIOCSIFNETMASK: case SIOCGIFDSTADDR: case SIOCSIFDSTADDR: case SIOCSIFPFLAGS: case SIOCGIFPFLAGS: case SIOCSIFFLAGS: err = devinet_ioctl(net, cmd, (void __user *)arg); break; default: if (sk->sk_prot->ioctl) err = sk->sk_prot->ioctl(sk, cmd, arg); else err = -ENOIOCTLCMD; break; |
1da177e4c Linux-2.6.12-rc2 |
859 860 861 |
} return err; } |
3d1427f87 ipv4: af_inet.c c... |
862 |
EXPORT_SYMBOL(inet_ioctl); |
1da177e4c Linux-2.6.12-rc2 |
863 |
|
709b46e8d net: Add compat i... |
864 |
#ifdef CONFIG_COMPAT |
686dc6b64 ipv4: compat_ioct... |
865 |
static int inet_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
709b46e8d net: Add compat i... |
866 867 868 869 870 871 872 873 874 875 |
{ struct sock *sk = sock->sk; int err = -ENOIOCTLCMD; if (sk->sk_prot->compat_ioctl) err = sk->sk_prot->compat_ioctl(sk, cmd, arg); return err; } #endif |
90ddc4f04 [NET]: move struc... |
876 |
const struct proto_ops inet_stream_ops = { |
543d9cfee [NET]: Identation... |
877 878 879 880 881 882 883 884 885 886 887 888 889 890 |
.family = PF_INET, .owner = THIS_MODULE, .release = inet_release, .bind = inet_bind, .connect = inet_stream_connect, .socketpair = sock_no_socketpair, .accept = inet_accept, .getname = inet_getname, .poll = tcp_poll, .ioctl = inet_ioctl, .listen = inet_listen, .shutdown = inet_shutdown, .setsockopt = sock_common_setsockopt, .getsockopt = sock_common_getsockopt, |
7ba429100 inet, inet6: make... |
891 |
.sendmsg = inet_sendmsg, |
fec5e652e rfs: Receive Flow... |
892 |
.recvmsg = inet_recvmsg, |
543d9cfee [NET]: Identation... |
893 |
.mmap = sock_no_mmap, |
7ba429100 inet, inet6: make... |
894 |
.sendpage = inet_sendpage, |
9c55e01c0 [TCP]: Splice rec... |
895 |
.splice_read = tcp_splice_read, |
3fdadf7d2 [NET]: {get|set}s... |
896 |
#ifdef CONFIG_COMPAT |
543d9cfee [NET]: Identation... |
897 898 |
.compat_setsockopt = compat_sock_common_setsockopt, .compat_getsockopt = compat_sock_common_getsockopt, |
709b46e8d net: Add compat i... |
899 |
.compat_ioctl = inet_compat_ioctl, |
3fdadf7d2 [NET]: {get|set}s... |
900 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
901 |
}; |
3d1427f87 ipv4: af_inet.c c... |
902 |
EXPORT_SYMBOL(inet_stream_ops); |
1da177e4c Linux-2.6.12-rc2 |
903 |
|
90ddc4f04 [NET]: move struc... |
904 |
const struct proto_ops inet_dgram_ops = { |
543d9cfee [NET]: Identation... |
905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 |
.family = PF_INET, .owner = THIS_MODULE, .release = inet_release, .bind = inet_bind, .connect = inet_dgram_connect, .socketpair = sock_no_socketpair, .accept = sock_no_accept, .getname = inet_getname, .poll = udp_poll, .ioctl = inet_ioctl, .listen = sock_no_listen, .shutdown = inet_shutdown, .setsockopt = sock_common_setsockopt, .getsockopt = sock_common_getsockopt, .sendmsg = inet_sendmsg, |
fec5e652e rfs: Receive Flow... |
920 |
.recvmsg = inet_recvmsg, |
543d9cfee [NET]: Identation... |
921 922 |
.mmap = sock_no_mmap, .sendpage = inet_sendpage, |
3fdadf7d2 [NET]: {get|set}s... |
923 |
#ifdef CONFIG_COMPAT |
543d9cfee [NET]: Identation... |
924 925 |
.compat_setsockopt = compat_sock_common_setsockopt, .compat_getsockopt = compat_sock_common_getsockopt, |
709b46e8d net: Add compat i... |
926 |
.compat_ioctl = inet_compat_ioctl, |
3fdadf7d2 [NET]: {get|set}s... |
927 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
928 |
}; |
3d1427f87 ipv4: af_inet.c c... |
929 |
EXPORT_SYMBOL(inet_dgram_ops); |
1da177e4c Linux-2.6.12-rc2 |
930 931 932 933 934 |
/* * For SOCK_RAW sockets; should be the same as inet_dgram_ops but without * udp_poll */ |
90ddc4f04 [NET]: move struc... |
935 |
static const struct proto_ops inet_sockraw_ops = { |
543d9cfee [NET]: Identation... |
936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 |
.family = PF_INET, .owner = THIS_MODULE, .release = inet_release, .bind = inet_bind, .connect = inet_dgram_connect, .socketpair = sock_no_socketpair, .accept = sock_no_accept, .getname = inet_getname, .poll = datagram_poll, .ioctl = inet_ioctl, .listen = sock_no_listen, .shutdown = inet_shutdown, .setsockopt = sock_common_setsockopt, .getsockopt = sock_common_getsockopt, .sendmsg = inet_sendmsg, |
fec5e652e rfs: Receive Flow... |
951 |
.recvmsg = inet_recvmsg, |
543d9cfee [NET]: Identation... |
952 953 |
.mmap = sock_no_mmap, .sendpage = inet_sendpage, |
3fdadf7d2 [NET]: {get|set}s... |
954 |
#ifdef CONFIG_COMPAT |
543d9cfee [NET]: Identation... |
955 956 |
.compat_setsockopt = compat_sock_common_setsockopt, .compat_getsockopt = compat_sock_common_getsockopt, |
709b46e8d net: Add compat i... |
957 |
.compat_ioctl = inet_compat_ioctl, |
3fdadf7d2 [NET]: {get|set}s... |
958 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
959 |
}; |
ec1b4cf74 net: mark net_pro... |
960 |
static const struct net_proto_family inet_family_ops = { |
1da177e4c Linux-2.6.12-rc2 |
961 962 963 964 |
.family = PF_INET, .create = inet_create, .owner = THIS_MODULE, }; |
1da177e4c Linux-2.6.12-rc2 |
965 966 967 968 969 |
/* Upon startup we insert all the elements in inetsw_array[] into * the linked list inetsw. */ static struct inet_protosw inetsw_array[] = { |
e905a9eda [NET] IPV4: Fix w... |
970 971 972 973 974 |
{ .type = SOCK_STREAM, .protocol = IPPROTO_TCP, .prot = &tcp_prot, .ops = &inet_stream_ops, |
e905a9eda [NET] IPV4: Fix w... |
975 976 |
.no_check = 0, .flags = INET_PROTOSW_PERMANENT | |
d83d8461f [IP_SOCKGLUE]: Re... |
977 |
INET_PROTOSW_ICSK, |
e905a9eda [NET] IPV4: Fix w... |
978 979 980 981 982 983 984 |
}, { .type = SOCK_DGRAM, .protocol = IPPROTO_UDP, .prot = &udp_prot, .ops = &inet_dgram_ops, |
e905a9eda [NET] IPV4: Fix w... |
985 986 |
.no_check = UDP_CSUM_DEFAULT, .flags = INET_PROTOSW_PERMANENT, |
1da177e4c Linux-2.6.12-rc2 |
987 |
}, |
e905a9eda [NET] IPV4: Fix w... |
988 |
|
c319b4d76 net: ipv4: add IP... |
989 990 991 992 993 994 995 996 |
{ .type = SOCK_DGRAM, .protocol = IPPROTO_ICMP, .prot = &ping_prot, .ops = &inet_dgram_ops, .no_check = UDP_CSUM_DEFAULT, .flags = INET_PROTOSW_REUSE, }, |
1da177e4c Linux-2.6.12-rc2 |
997 998 |
{ |
e905a9eda [NET] IPV4: Fix w... |
999 1000 1001 1002 |
.type = SOCK_RAW, .protocol = IPPROTO_IP, /* wild card */ .prot = &raw_prot, .ops = &inet_sockraw_ops, |
e905a9eda [NET] IPV4: Fix w... |
1003 1004 |
.no_check = UDP_CSUM_DEFAULT, .flags = INET_PROTOSW_REUSE, |
1da177e4c Linux-2.6.12-rc2 |
1005 1006 |
} }; |
c40f6fff4 [IPV4] af_inet.c:... |
1007 |
#define INETSW_ARRAY_LEN ARRAY_SIZE(inetsw_array) |
1da177e4c Linux-2.6.12-rc2 |
1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 |
void inet_register_protosw(struct inet_protosw *p) { struct list_head *lh; struct inet_protosw *answer; int protocol = p->protocol; struct list_head *last_perm; spin_lock_bh(&inetsw_lock); if (p->type >= SOCK_MAX) goto out_illegal; /* If we are trying to override a permanent protocol, bail. */ answer = NULL; last_perm = &inetsw[p->type]; list_for_each(lh, &inetsw[p->type]) { answer = list_entry(lh, struct inet_protosw, list); /* Check only the non-wild match. */ if (INET_PROTOSW_PERMANENT & answer->flags) { if (protocol == answer->protocol) break; last_perm = lh; } answer = NULL; } if (answer) goto out_permanent; /* Add the new entry after the last permanent entry if any, so that * the new entry does not override a permanent entry when matched with * a wild-card protocol. But it is allowed to override any existing |
e905a9eda [NET] IPV4: Fix w... |
1042 |
* non-permanent entry. This means that when we remove this entry, the |
1da177e4c Linux-2.6.12-rc2 |
1043 1044 1045 1046 1047 |
* system automatically returns to the old behavior. */ list_add_rcu(&p->list, last_perm); out: spin_unlock_bh(&inetsw_lock); |
1da177e4c Linux-2.6.12-rc2 |
1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 |
return; out_permanent: printk(KERN_ERR "Attempt to override permanent protocol %d. ", protocol); goto out; out_illegal: printk(KERN_ERR "Ignoring attempt to register invalid socket type %d. ", p->type); goto out; } |
3d1427f87 ipv4: af_inet.c c... |
1063 |
EXPORT_SYMBOL(inet_register_protosw); |
1da177e4c Linux-2.6.12-rc2 |
1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 |
void inet_unregister_protosw(struct inet_protosw *p) { if (INET_PROTOSW_PERMANENT & p->flags) { printk(KERN_ERR "Attempt to unregister permanent protocol %d. ", p->protocol); } else { spin_lock_bh(&inetsw_lock); list_del_rcu(&p->list); spin_unlock_bh(&inetsw_lock); synchronize_net(); } } |
3d1427f87 ipv4: af_inet.c c... |
1080 |
EXPORT_SYMBOL(inet_unregister_protosw); |
1da177e4c Linux-2.6.12-rc2 |
1081 |
|
32519f11d [INET]: Introduce... |
1082 1083 1084 |
/* * Shall we try to damage output packets if routing dev changes? */ |
ab32ea5d8 [NET/IPV4/IPV6]: ... |
1085 |
int sysctl_ip_dynaddr __read_mostly; |
32519f11d [INET]: Introduce... |
1086 1087 1088 1089 |
static int inet_sk_reselect_saddr(struct sock *sk) { struct inet_sock *inet = inet_sk(sk); |
c720c7e83 inet: rename some... |
1090 |
__be32 old_saddr = inet->inet_saddr; |
c720c7e83 inet: rename some... |
1091 |
__be32 daddr = inet->inet_daddr; |
6e8691381 ipv4: Use cork fl... |
1092 |
struct flowi4 *fl4; |
b23dd4fe4 ipv4: Make output... |
1093 1094 |
struct rtable *rt; __be32 new_saddr; |
f6d8bd051 inet: add RCU pro... |
1095 |
struct ip_options_rcu *inet_opt; |
32519f11d [INET]: Introduce... |
1096 |
|
f6d8bd051 inet: add RCU pro... |
1097 1098 1099 1100 |
inet_opt = rcu_dereference_protected(inet->inet_opt, sock_owned_by_user(sk)); if (inet_opt && inet_opt->opt.srr) daddr = inet_opt->opt.faddr; |
32519f11d [INET]: Introduce... |
1101 1102 |
/* Query new route. */ |
6e8691381 ipv4: Use cork fl... |
1103 1104 |
fl4 = &inet->cork.fl.u.ip4; rt = ip_route_connect(fl4, daddr, 0, RT_CONN_FLAGS(sk), |
b23dd4fe4 ipv4: Make output... |
1105 1106 1107 1108 |
sk->sk_bound_dev_if, sk->sk_protocol, inet->inet_sport, inet->inet_dport, sk, false); if (IS_ERR(rt)) return PTR_ERR(rt); |
32519f11d [INET]: Introduce... |
1109 |
|
d8d1f30b9 net-next: remove ... |
1110 |
sk_setup_caps(sk, &rt->dst); |
32519f11d [INET]: Introduce... |
1111 |
|
6e8691381 ipv4: Use cork fl... |
1112 |
new_saddr = fl4->saddr; |
32519f11d [INET]: Introduce... |
1113 1114 1115 1116 1117 |
if (new_saddr == old_saddr) return 0; if (sysctl_ip_dynaddr > 1) { |
673d57e72 net: replace NIPQ... |
1118 1119 1120 |
printk(KERN_INFO "%s(): shifting inet->saddr from %pI4 to %pI4 ", __func__, &old_saddr, &new_saddr); |
32519f11d [INET]: Introduce... |
1121 |
} |
c720c7e83 inet: rename some... |
1122 |
inet->inet_saddr = inet->inet_rcv_saddr = new_saddr; |
32519f11d [INET]: Introduce... |
1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 |
/* * XXX The only one ugly spot where we need to * XXX really change the sockets identity after * XXX it has entered the hashes. -DaveM * * Besides that, it does not check for connection * uniqueness. Wait for troubles. */ __sk_prot_rehash(sk); return 0; } int inet_sk_rebuild_header(struct sock *sk) { struct inet_sock *inet = inet_sk(sk); struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0); |
3ca3c68e7 [IPV4]: struct ip... |
1140 |
__be32 daddr; |
f6d8bd051 inet: add RCU pro... |
1141 |
struct ip_options_rcu *inet_opt; |
6e8691381 ipv4: Use cork fl... |
1142 |
struct flowi4 *fl4; |
32519f11d [INET]: Introduce... |
1143 1144 1145 1146 1147 1148 1149 |
int err; /* Route is OK, nothing to do. */ if (rt) return 0; /* Reroute. */ |
f6d8bd051 inet: add RCU pro... |
1150 1151 |
rcu_read_lock(); inet_opt = rcu_dereference(inet->inet_opt); |
c720c7e83 inet: rename some... |
1152 |
daddr = inet->inet_daddr; |
f6d8bd051 inet: add RCU pro... |
1153 1154 1155 |
if (inet_opt && inet_opt->opt.srr) daddr = inet_opt->opt.faddr; rcu_read_unlock(); |
6e8691381 ipv4: Use cork fl... |
1156 1157 |
fl4 = &inet->cork.fl.u.ip4; rt = ip_route_output_ports(sock_net(sk), fl4, sk, daddr, inet->inet_saddr, |
78fbfd8a6 ipv4: Create and ... |
1158 1159 1160 |
inet->inet_dport, inet->inet_sport, sk->sk_protocol, RT_CONN_FLAGS(sk), sk->sk_bound_dev_if); |
b23dd4fe4 ipv4: Make output... |
1161 1162 |
if (!IS_ERR(rt)) { err = 0; |
d8d1f30b9 net-next: remove ... |
1163 |
sk_setup_caps(sk, &rt->dst); |
b23dd4fe4 ipv4: Make output... |
1164 1165 |
} else { err = PTR_ERR(rt); |
32519f11d [INET]: Introduce... |
1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 |
/* Routing failed... */ sk->sk_route_caps = 0; /* * Other protocols have to map its equivalent state to TCP_SYN_SENT. * DCCP maps its DCCP_REQUESTING state to TCP_SYN_SENT. -acme */ if (!sysctl_ip_dynaddr || sk->sk_state != TCP_SYN_SENT || (sk->sk_userlocks & SOCK_BINDADDR_LOCK) || (err = inet_sk_reselect_saddr(sk)) != 0) sk->sk_err_soft = -err; } return err; } |
32519f11d [INET]: Introduce... |
1181 |
EXPORT_SYMBOL(inet_sk_rebuild_header); |
a430a43d0 [NET] gso: Fix up... |
1182 1183 |
static int inet_gso_send_check(struct sk_buff *skb) { |
b71d1d426 inet: constify ip... |
1184 |
const struct iphdr *iph; |
32613090a net: constify str... |
1185 |
const struct net_protocol *ops; |
a430a43d0 [NET] gso: Fix up... |
1186 1187 1188 1189 1190 1191 |
int proto; int ihl; int err = -EINVAL; if (unlikely(!pskb_may_pull(skb, sizeof(*iph)))) goto out; |
eddc9ec53 [SK_BUFF]: Introd... |
1192 |
iph = ip_hdr(skb); |
a430a43d0 [NET] gso: Fix up... |
1193 1194 1195 1196 1197 1198 |
ihl = iph->ihl * 4; if (ihl < sizeof(*iph)) goto out; if (unlikely(!pskb_may_pull(skb, ihl))) goto out; |
badff6d01 [SK_BUFF]: Introd... |
1199 1200 |
__skb_pull(skb, ihl); skb_reset_transport_header(skb); |
eddc9ec53 [SK_BUFF]: Introd... |
1201 |
iph = ip_hdr(skb); |
a430a43d0 [NET] gso: Fix up... |
1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 |
proto = iph->protocol & (MAX_INET_PROTOS - 1); err = -EPROTONOSUPPORT; rcu_read_lock(); ops = rcu_dereference(inet_protos[proto]); if (likely(ops && ops->gso_send_check)) err = ops->gso_send_check(skb); rcu_read_unlock(); out: return err; } |
c8f44affb net: introduce an... |
1214 1215 |
static struct sk_buff *inet_gso_segment(struct sk_buff *skb, netdev_features_t features) |
f4c50d990 [NET]: Add softwa... |
1216 1217 1218 |
{ struct sk_buff *segs = ERR_PTR(-EINVAL); struct iphdr *iph; |
32613090a net: constify str... |
1219 |
const struct net_protocol *ops; |
f4c50d990 [NET]: Add softwa... |
1220 1221 1222 |
int proto; int ihl; int id; |
d7ca4cc01 udpv4: Handle lar... |
1223 |
unsigned int offset = 0; |
f4c50d990 [NET]: Add softwa... |
1224 |
|
d212f87b0 [NET]: IPV6 check... |
1225 1226 |
if (!(features & NETIF_F_V4_CSUM)) features &= ~NETIF_F_SG; |
bbcf467da [NET]: Verify gso... |
1227 1228 1229 1230 1231 1232 1233 1234 1235 |
if (unlikely(skb_shinfo(skb)->gso_type & ~(SKB_GSO_TCPV4 | SKB_GSO_UDP | SKB_GSO_DODGY | SKB_GSO_TCP_ECN | 0))) goto out; if (unlikely(!pskb_may_pull(skb, sizeof(*iph)))) |
f4c50d990 [NET]: Add softwa... |
1236 |
goto out; |
eddc9ec53 [SK_BUFF]: Introd... |
1237 |
iph = ip_hdr(skb); |
f4c50d990 [NET]: Add softwa... |
1238 1239 1240 |
ihl = iph->ihl * 4; if (ihl < sizeof(*iph)) goto out; |
bbcf467da [NET]: Verify gso... |
1241 |
if (unlikely(!pskb_may_pull(skb, ihl))) |
f4c50d990 [NET]: Add softwa... |
1242 |
goto out; |
badff6d01 [SK_BUFF]: Introd... |
1243 1244 |
__skb_pull(skb, ihl); skb_reset_transport_header(skb); |
eddc9ec53 [SK_BUFF]: Introd... |
1245 |
iph = ip_hdr(skb); |
f4c50d990 [NET]: Add softwa... |
1246 1247 1248 1249 1250 1251 |
id = ntohs(iph->id); proto = iph->protocol & (MAX_INET_PROTOS - 1); segs = ERR_PTR(-EPROTONOSUPPORT); rcu_read_lock(); ops = rcu_dereference(inet_protos[proto]); |
bbcf467da [NET]: Verify gso... |
1252 |
if (likely(ops && ops->gso_segment)) |
576a30eb6 [NET]: Added GSO ... |
1253 |
segs = ops->gso_segment(skb, features); |
f4c50d990 [NET]: Add softwa... |
1254 |
rcu_read_unlock(); |
801678c5a Remove duplicated... |
1255 |
if (!segs || IS_ERR(segs)) |
f4c50d990 [NET]: Add softwa... |
1256 1257 1258 1259 |
goto out; skb = segs; do { |
eddc9ec53 [SK_BUFF]: Introd... |
1260 |
iph = ip_hdr(skb); |
d7ca4cc01 udpv4: Handle lar... |
1261 1262 1263 1264 1265 1266 1267 1268 |
if (proto == IPPROTO_UDP) { iph->id = htons(id); iph->frag_off = htons(offset >> 3); if (skb->next != NULL) iph->frag_off |= htons(IP_MF); offset += (skb->len - skb->mac_len - iph->ihl * 4); } else iph->id = htons(id++); |
f4c50d990 [NET]: Add softwa... |
1269 1270 |
iph->tot_len = htons(skb->len - skb->mac_len); iph->check = 0; |
d56f90a7c [SK_BUFF]: Introd... |
1271 |
iph->check = ip_fast_csum(skb_network_header(skb), iph->ihl); |
f4c50d990 [NET]: Add softwa... |
1272 1273 1274 1275 1276 |
} while ((skb = skb->next)); out: return segs; } |
73cc19f15 ipv4: Add GRO inf... |
1277 1278 1279 |
static struct sk_buff **inet_gro_receive(struct sk_buff **head, struct sk_buff *skb) { |
32613090a net: constify str... |
1280 |
const struct net_protocol *ops; |
73cc19f15 ipv4: Add GRO inf... |
1281 1282 |
struct sk_buff **pp = NULL; struct sk_buff *p; |
b71d1d426 inet: constify ip... |
1283 |
const struct iphdr *iph; |
a5b1cf288 gro: Avoid unnece... |
1284 1285 |
unsigned int hlen; unsigned int off; |
1075f3f65 ipv4: Use 32-bit ... |
1286 |
unsigned int id; |
73cc19f15 ipv4: Add GRO inf... |
1287 1288 |
int flush = 1; int proto; |
73cc19f15 ipv4: Add GRO inf... |
1289 |
|
a5b1cf288 gro: Avoid unnece... |
1290 1291 1292 1293 1294 1295 1296 1297 |
off = skb_gro_offset(skb); hlen = off + sizeof(*iph); iph = skb_gro_header_fast(skb, off); if (skb_gro_header_hard(skb, hlen)) { iph = skb_gro_header_slow(skb, hlen, off); if (unlikely(!iph)) goto out; } |
73cc19f15 ipv4: Add GRO inf... |
1298 |
|
73cc19f15 ipv4: Add GRO inf... |
1299 1300 1301 1302 1303 1304 |
proto = iph->protocol & (MAX_INET_PROTOS - 1); rcu_read_lock(); ops = rcu_dereference(inet_protos[proto]); if (!ops || !ops->gro_receive) goto out_unlock; |
a5ad24be7 gro: Optimise IPv... |
1305 |
if (*(u8 *)iph != 0x45) |
73cc19f15 ipv4: Add GRO inf... |
1306 1307 1308 1309 |
goto out_unlock; if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl))) goto out_unlock; |
0eae88f31 net: Fix various ... |
1310 1311 |
id = ntohl(*(__be32 *)&iph->id); flush = (u16)((ntohl(*(__be32 *)iph) ^ skb_gro_len(skb)) | (id ^ IP_DF)); |
1075f3f65 ipv4: Use 32-bit ... |
1312 |
id >>= 16; |
73cc19f15 ipv4: Add GRO inf... |
1313 1314 1315 1316 1317 1318 1319 1320 |
for (p = *head; p; p = p->next) { struct iphdr *iph2; if (!NAPI_GRO_CB(p)->same_flow) continue; iph2 = ip_hdr(p); |
a5ad24be7 gro: Optimise IPv... |
1321 1322 |
if ((iph->protocol ^ iph2->protocol) | (iph->tos ^ iph2->tos) | |
0eae88f31 net: Fix various ... |
1323 1324 |
((__force u32)iph->saddr ^ (__force u32)iph2->saddr) | ((__force u32)iph->daddr ^ (__force u32)iph2->daddr)) { |
73cc19f15 ipv4: Add GRO inf... |
1325 1326 1327 1328 1329 1330 |
NAPI_GRO_CB(p)->same_flow = 0; continue; } /* All fields must match except length and checksum. */ NAPI_GRO_CB(p)->flush |= |
a5ad24be7 gro: Optimise IPv... |
1331 1332 |
(iph->ttl ^ iph2->ttl) | ((u16)(ntohs(iph2->id) + NAPI_GRO_CB(p)->count) ^ id); |
73cc19f15 ipv4: Add GRO inf... |
1333 1334 1335 1336 1337 |
NAPI_GRO_CB(p)->flush |= flush; } NAPI_GRO_CB(skb)->flush |= flush; |
86911732d gro: Avoid copyin... |
1338 1339 |
skb_gro_pull(skb, sizeof(*iph)); skb_set_transport_header(skb, skb_gro_offset(skb)); |
73cc19f15 ipv4: Add GRO inf... |
1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 |
pp = ops->gro_receive(head, skb); out_unlock: rcu_read_unlock(); out: NAPI_GRO_CB(skb)->flush |= flush; return pp; } static int inet_gro_complete(struct sk_buff *skb) { |
32613090a net: constify str... |
1354 |
const struct net_protocol *ops; |
73cc19f15 ipv4: Add GRO inf... |
1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 |
struct iphdr *iph = ip_hdr(skb); int proto = iph->protocol & (MAX_INET_PROTOS - 1); int err = -ENOSYS; __be16 newlen = htons(skb->len - skb_network_offset(skb)); csum_replace2(&iph->check, iph->tot_len, newlen); iph->tot_len = newlen; rcu_read_lock(); ops = rcu_dereference(inet_protos[proto]); if (WARN_ON(!ops || !ops->gro_complete)) goto out_unlock; err = ops->gro_complete(skb); out_unlock: rcu_read_unlock(); return err; } |
eee4fe4de [INET]: Let inet_... |
1375 |
int inet_ctl_sock_create(struct sock **sk, unsigned short family, |
5677242f4 [NETNS]: Inet con... |
1376 1377 |
unsigned short type, unsigned char protocol, struct net *net) |
3d58b5fa8 [INET]: Rename in... |
1378 |
{ |
eee4fe4de [INET]: Let inet_... |
1379 1380 |
struct socket *sock; int rc = sock_create_kern(family, type, protocol, &sock); |
3d58b5fa8 [INET]: Rename in... |
1381 1382 |
if (rc == 0) { |
eee4fe4de [INET]: Let inet_... |
1383 1384 |
*sk = sock->sk; (*sk)->sk_allocation = GFP_ATOMIC; |
3d58b5fa8 [INET]: Rename in... |
1385 1386 1387 1388 |
/* * Unhash it so that IP input processing does not even see it, * we do not wish this socket to see incoming packets. */ |
eee4fe4de [INET]: Let inet_... |
1389 |
(*sk)->sk_prot->unhash(*sk); |
5677242f4 [NETNS]: Inet con... |
1390 1391 |
sk_change_net(*sk, net); |
3d58b5fa8 [INET]: Rename in... |
1392 1393 1394 |
} return rc; } |
3d58b5fa8 [INET]: Rename in... |
1395 |
EXPORT_SYMBOL_GPL(inet_ctl_sock_create); |
7d720c3e4 percpu: add __per... |
1396 |
unsigned long snmp_fold_field(void __percpu *mib[], int offt) |
5e0f04351 [IPV4]: Consolida... |
1397 1398 |
{ unsigned long res = 0; |
8f0ea0fe3 snmp: reduce perc... |
1399 |
int i, j; |
5e0f04351 [IPV4]: Consolida... |
1400 1401 |
for_each_possible_cpu(i) { |
8f0ea0fe3 snmp: reduce perc... |
1402 1403 |
for (j = 0; j < SNMP_ARRAY_SZ; j++) res += *(((unsigned long *) per_cpu_ptr(mib[j], i)) + offt); |
5e0f04351 [IPV4]: Consolida... |
1404 1405 1406 1407 |
} return res; } EXPORT_SYMBOL_GPL(snmp_fold_field); |
4ce3c183f snmp: 64bit ipsta... |
1408 1409 1410 1411 1412 1413 1414 1415 |
#if BITS_PER_LONG==32 u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t syncp_offset) { u64 res = 0; int cpu; for_each_possible_cpu(cpu) { |
8f0ea0fe3 snmp: reduce perc... |
1416 |
void *bhptr; |
4ce3c183f snmp: 64bit ipsta... |
1417 |
struct u64_stats_sync *syncp; |
8f0ea0fe3 snmp: reduce perc... |
1418 |
u64 v; |
4ce3c183f snmp: 64bit ipsta... |
1419 |
unsigned int start; |
8f0ea0fe3 snmp: reduce perc... |
1420 |
bhptr = per_cpu_ptr(mib[0], cpu); |
4ce3c183f snmp: 64bit ipsta... |
1421 1422 1423 |
syncp = (struct u64_stats_sync *)(bhptr + syncp_offset); do { start = u64_stats_fetch_begin_bh(syncp); |
8f0ea0fe3 snmp: reduce perc... |
1424 |
v = *(((u64 *) bhptr) + offt); |
4ce3c183f snmp: 64bit ipsta... |
1425 |
} while (u64_stats_fetch_retry_bh(syncp, start)); |
8f0ea0fe3 snmp: reduce perc... |
1426 |
res += v; |
4ce3c183f snmp: 64bit ipsta... |
1427 1428 1429 1430 1431 |
} return res; } EXPORT_SYMBOL_GPL(snmp_fold_field64); #endif |
1823e4c80 snmp: add align p... |
1432 |
int snmp_mib_init(void __percpu *ptr[2], size_t mibsize, size_t align) |
5e0f04351 [IPV4]: Consolida... |
1433 1434 |
{ BUG_ON(ptr == NULL); |
1823e4c80 snmp: add align p... |
1435 |
ptr[0] = __alloc_percpu(mibsize, align); |
5e0f04351 [IPV4]: Consolida... |
1436 |
if (!ptr[0]) |
8f0ea0fe3 snmp: reduce perc... |
1437 1438 |
return -ENOMEM; #if SNMP_ARRAY_SZ == 2 |
1823e4c80 snmp: add align p... |
1439 |
ptr[1] = __alloc_percpu(mibsize, align); |
8f0ea0fe3 snmp: reduce perc... |
1440 1441 1442 1443 1444 1445 |
if (!ptr[1]) { free_percpu(ptr[0]); ptr[0] = NULL; return -ENOMEM; } #endif |
5e0f04351 [IPV4]: Consolida... |
1446 |
return 0; |
5e0f04351 [IPV4]: Consolida... |
1447 1448 |
} EXPORT_SYMBOL_GPL(snmp_mib_init); |
8f0ea0fe3 snmp: reduce perc... |
1449 |
void snmp_mib_free(void __percpu *ptr[SNMP_ARRAY_SZ]) |
5e0f04351 [IPV4]: Consolida... |
1450 |
{ |
8f0ea0fe3 snmp: reduce perc... |
1451 |
int i; |
5e0f04351 [IPV4]: Consolida... |
1452 |
BUG_ON(ptr == NULL); |
8f0ea0fe3 snmp: reduce perc... |
1453 1454 1455 1456 |
for (i = 0; i < SNMP_ARRAY_SZ; i++) { free_percpu(ptr[i]); ptr[i] = NULL; } |
5e0f04351 [IPV4]: Consolida... |
1457 1458 |
} EXPORT_SYMBOL_GPL(snmp_mib_free); |
1da177e4c Linux-2.6.12-rc2 |
1459 |
#ifdef CONFIG_IP_MULTICAST |
32613090a net: constify str... |
1460 |
static const struct net_protocol igmp_protocol = { |
1da177e4c Linux-2.6.12-rc2 |
1461 |
.handler = igmp_rcv, |
b4ee07df3 netns: igmp: allo... |
1462 |
.netns_ok = 1, |
1da177e4c Linux-2.6.12-rc2 |
1463 1464 |
}; #endif |
32613090a net: constify str... |
1465 |
static const struct net_protocol tcp_protocol = { |
1da177e4c Linux-2.6.12-rc2 |
1466 1467 |
.handler = tcp_v4_rcv, .err_handler = tcp_v4_err, |
a430a43d0 [NET] gso: Fix up... |
1468 |
.gso_send_check = tcp_v4_gso_send_check, |
f4c50d990 [NET]: Add softwa... |
1469 |
.gso_segment = tcp_tso_segment, |
bf296b125 tcp: Add GRO support |
1470 1471 |
.gro_receive = tcp4_gro_receive, .gro_complete = tcp4_gro_complete, |
1da177e4c Linux-2.6.12-rc2 |
1472 |
.no_policy = 1, |
92f1fecb4 [NETNS]: Enable T... |
1473 |
.netns_ok = 1, |
1da177e4c Linux-2.6.12-rc2 |
1474 |
}; |
32613090a net: constify str... |
1475 |
static const struct net_protocol udp_protocol = { |
1da177e4c Linux-2.6.12-rc2 |
1476 1477 |
.handler = udp_rcv, .err_handler = udp_err, |
d7ca4cc01 udpv4: Handle lar... |
1478 1479 |
.gso_send_check = udp4_ufo_send_check, .gso_segment = udp4_ufo_fragment, |
1da177e4c Linux-2.6.12-rc2 |
1480 |
.no_policy = 1, |
92f1fecb4 [NETNS]: Enable T... |
1481 |
.netns_ok = 1, |
1da177e4c Linux-2.6.12-rc2 |
1482 |
}; |
32613090a net: constify str... |
1483 |
static const struct net_protocol icmp_protocol = { |
1da177e4c Linux-2.6.12-rc2 |
1484 |
.handler = icmp_rcv, |
c319b4d76 net: ipv4: add IP... |
1485 |
.err_handler = ping_err, |
8b7817f3a [IPSEC]: Add ICMP... |
1486 |
.no_policy = 1, |
92f1fecb4 [NETNS]: Enable T... |
1487 |
.netns_ok = 1, |
1da177e4c Linux-2.6.12-rc2 |
1488 |
}; |
9b4661bd6 ipv4: add pernet ... |
1489 1490 |
static __net_init int ipv4_mib_init_net(struct net *net) { |
7d720c3e4 percpu: add __per... |
1491 |
if (snmp_mib_init((void __percpu **)net->mib.tcp_statistics, |
1823e4c80 snmp: add align p... |
1492 1493 |
sizeof(struct tcp_mib), __alignof__(struct tcp_mib)) < 0) |
57ef42d59 mib: put tcp stat... |
1494 |
goto err_tcp_mib; |
7d720c3e4 percpu: add __per... |
1495 |
if (snmp_mib_init((void __percpu **)net->mib.ip_statistics, |
1823e4c80 snmp: add align p... |
1496 1497 |
sizeof(struct ipstats_mib), __alignof__(struct ipstats_mib)) < 0) |
a20f5799c mib: put ip stati... |
1498 |
goto err_ip_mib; |
7d720c3e4 percpu: add __per... |
1499 |
if (snmp_mib_init((void __percpu **)net->mib.net_statistics, |
1823e4c80 snmp: add align p... |
1500 1501 |
sizeof(struct linux_mib), __alignof__(struct linux_mib)) < 0) |
61a7e2602 mib: put net stat... |
1502 |
goto err_net_mib; |
7d720c3e4 percpu: add __per... |
1503 |
if (snmp_mib_init((void __percpu **)net->mib.udp_statistics, |
1823e4c80 snmp: add align p... |
1504 1505 |
sizeof(struct udp_mib), __alignof__(struct udp_mib)) < 0) |
2f275f91a mib: put udp stat... |
1506 |
goto err_udp_mib; |
7d720c3e4 percpu: add __per... |
1507 |
if (snmp_mib_init((void __percpu **)net->mib.udplite_statistics, |
1823e4c80 snmp: add align p... |
1508 1509 |
sizeof(struct udp_mib), __alignof__(struct udp_mib)) < 0) |
386019d35 mib: put udplite ... |
1510 |
goto err_udplite_mib; |
7d720c3e4 percpu: add __per... |
1511 |
if (snmp_mib_init((void __percpu **)net->mib.icmp_statistics, |
1823e4c80 snmp: add align p... |
1512 1513 |
sizeof(struct icmp_mib), __alignof__(struct icmp_mib)) < 0) |
b60538a0d mib: put icmp sta... |
1514 |
goto err_icmp_mib; |
acb32ba3d ipv4: reduce perc... |
1515 1516 1517 |
net->mib.icmpmsg_statistics = kzalloc(sizeof(struct icmpmsg_mib), GFP_KERNEL); if (!net->mib.icmpmsg_statistics) |
923c6586b mib: put icmpmsg ... |
1518 |
goto err_icmpmsg_mib; |
57ef42d59 mib: put tcp stat... |
1519 1520 |
tcp_mib_init(net); |
9b4661bd6 ipv4: add pernet ... |
1521 |
return 0; |
57ef42d59 mib: put tcp stat... |
1522 |
|
923c6586b mib: put icmpmsg ... |
1523 |
err_icmpmsg_mib: |
7d720c3e4 percpu: add __per... |
1524 |
snmp_mib_free((void __percpu **)net->mib.icmp_statistics); |
b60538a0d mib: put icmp sta... |
1525 |
err_icmp_mib: |
7d720c3e4 percpu: add __per... |
1526 |
snmp_mib_free((void __percpu **)net->mib.udplite_statistics); |
386019d35 mib: put udplite ... |
1527 |
err_udplite_mib: |
7d720c3e4 percpu: add __per... |
1528 |
snmp_mib_free((void __percpu **)net->mib.udp_statistics); |
2f275f91a mib: put udp stat... |
1529 |
err_udp_mib: |
7d720c3e4 percpu: add __per... |
1530 |
snmp_mib_free((void __percpu **)net->mib.net_statistics); |
61a7e2602 mib: put net stat... |
1531 |
err_net_mib: |
7d720c3e4 percpu: add __per... |
1532 |
snmp_mib_free((void __percpu **)net->mib.ip_statistics); |
a20f5799c mib: put ip stati... |
1533 |
err_ip_mib: |
7d720c3e4 percpu: add __per... |
1534 |
snmp_mib_free((void __percpu **)net->mib.tcp_statistics); |
57ef42d59 mib: put tcp stat... |
1535 1536 |
err_tcp_mib: return -ENOMEM; |
9b4661bd6 ipv4: add pernet ... |
1537 1538 1539 1540 |
} static __net_exit void ipv4_mib_exit_net(struct net *net) { |
acb32ba3d ipv4: reduce perc... |
1541 |
kfree(net->mib.icmpmsg_statistics); |
7d720c3e4 percpu: add __per... |
1542 1543 1544 1545 1546 1547 |
snmp_mib_free((void __percpu **)net->mib.icmp_statistics); snmp_mib_free((void __percpu **)net->mib.udplite_statistics); snmp_mib_free((void __percpu **)net->mib.udp_statistics); snmp_mib_free((void __percpu **)net->mib.net_statistics); snmp_mib_free((void __percpu **)net->mib.ip_statistics); snmp_mib_free((void __percpu **)net->mib.tcp_statistics); |
9b4661bd6 ipv4: add pernet ... |
1548 1549 1550 1551 1552 1553 |
} static __net_initdata struct pernet_operations ipv4_mib_ops = { .init = ipv4_mib_init_net, .exit = ipv4_mib_exit_net, }; |
1da177e4c Linux-2.6.12-rc2 |
1554 1555 |
static int __init init_ipv4_mibs(void) { |
d89cbbb1e ipv4: clean the i... |
1556 |
return register_pernet_subsys(&ipv4_mib_ops); |
1da177e4c Linux-2.6.12-rc2 |
1557 1558 1559 |
} static int ipv4_proc_init(void); |
1da177e4c Linux-2.6.12-rc2 |
1560 |
|
30e224d76 [IPV4]: Fix crash... |
1561 1562 1563 |
/* * IP protocol layer initialiser */ |
7546dd97d net: convert usag... |
1564 |
static struct packet_type ip_packet_type __read_mostly = { |
09640e636 net: replace uses... |
1565 |
.type = cpu_to_be16(ETH_P_IP), |
30e224d76 [IPV4]: Fix crash... |
1566 |
.func = ip_rcv, |
a430a43d0 [NET] gso: Fix up... |
1567 |
.gso_send_check = inet_gso_send_check, |
f4c50d990 [NET]: Add softwa... |
1568 |
.gso_segment = inet_gso_segment, |
73cc19f15 ipv4: Add GRO inf... |
1569 1570 |
.gro_receive = inet_gro_receive, .gro_complete = inet_gro_complete, |
30e224d76 [IPV4]: Fix crash... |
1571 |
}; |
1da177e4c Linux-2.6.12-rc2 |
1572 1573 1574 1575 1576 1577 |
static int __init inet_init(void) { struct sk_buff *dummy_skb; struct inet_protosw *q; struct list_head *r; int rc = -EINVAL; |
ef047f5e1 [NET]: Use BUILD_... |
1578 |
BUILD_BUG_ON(sizeof(struct inet_skb_parm) > sizeof(dummy_skb->cb)); |
1da177e4c Linux-2.6.12-rc2 |
1579 |
|
e3826f1e9 net: reserve port... |
1580 1581 1582 |
sysctl_local_reserved_ports = kzalloc(65536 / 8, GFP_KERNEL); if (!sysctl_local_reserved_ports) goto out; |
1da177e4c Linux-2.6.12-rc2 |
1583 1584 |
rc = proto_register(&tcp_prot, 1); if (rc) |
e3826f1e9 net: reserve port... |
1585 |
goto out_free_reserved_ports; |
1da177e4c Linux-2.6.12-rc2 |
1586 1587 1588 1589 1590 1591 1592 1593 |
rc = proto_register(&udp_prot, 1); if (rc) goto out_unregister_tcp_proto; rc = proto_register(&raw_prot, 1); if (rc) goto out_unregister_udp_proto; |
c319b4d76 net: ipv4: add IP... |
1594 1595 1596 |
rc = proto_register(&ping_prot, 1); if (rc) goto out_unregister_raw_proto; |
1da177e4c Linux-2.6.12-rc2 |
1597 |
/* |
e905a9eda [NET] IPV4: Fix w... |
1598 |
* Tell SOCKET that we are alive... |
1da177e4c Linux-2.6.12-rc2 |
1599 |
*/ |
e905a9eda [NET] IPV4: Fix w... |
1600 |
(void)sock_register(&inet_family_ops); |
1da177e4c Linux-2.6.12-rc2 |
1601 |
|
bd7b1533c [PATCH] sysctl: m... |
1602 1603 1604 |
#ifdef CONFIG_SYSCTL ip_static_sysctl_init(); #endif |
3dc43e3e4 per-netns ipv4 sy... |
1605 |
tcp_prot.sysctl_mem = init_net.ipv4.sysctl_tcp_mem; |
1da177e4c Linux-2.6.12-rc2 |
1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 |
/* * Add all the base protocols. */ if (inet_add_protocol(&icmp_protocol, IPPROTO_ICMP) < 0) printk(KERN_CRIT "inet_init: Cannot add ICMP protocol "); if (inet_add_protocol(&udp_protocol, IPPROTO_UDP) < 0) printk(KERN_CRIT "inet_init: Cannot add UDP protocol "); if (inet_add_protocol(&tcp_protocol, IPPROTO_TCP) < 0) printk(KERN_CRIT "inet_init: Cannot add TCP protocol "); #ifdef CONFIG_IP_MULTICAST if (inet_add_protocol(&igmp_protocol, IPPROTO_IGMP) < 0) printk(KERN_CRIT "inet_init: Cannot add IGMP protocol "); #endif /* Register the socket-side information for inet_create. */ for (r = &inetsw[0]; r < &inetsw[SOCK_MAX]; ++r) INIT_LIST_HEAD(r); for (q = inetsw_array; q < &inetsw_array[INETSW_ARRAY_LEN]; ++q) inet_register_protosw(q); /* * Set the ARP module up */ arp_init(); |
e905a9eda [NET] IPV4: Fix w... |
1637 1638 1639 |
/* * Set the IP module up */ |
1da177e4c Linux-2.6.12-rc2 |
1640 1641 |
ip_init(); |
9b0f976f2 [INET]: Remove st... |
1642 |
tcp_v4_init(); |
1da177e4c Linux-2.6.12-rc2 |
1643 1644 1645 |
/* Setup TCP slab cache for open requests. */ tcp_init(); |
95766fff6 [UDP]: Add memory... |
1646 1647 |
/* Setup UDP memory threshold */ udp_init(); |
ba4e58eca [NET]: Supporting... |
1648 1649 |
/* Add UDP-Lite (RFC 3828) */ udplite4_register(); |
1da177e4c Linux-2.6.12-rc2 |
1650 |
|
c319b4d76 net: ipv4: add IP... |
1651 |
ping_init(); |
1da177e4c Linux-2.6.12-rc2 |
1652 1653 1654 |
/* * Set the ICMP layer up */ |
a5710d658 [ICMP]: Add retur... |
1655 1656 1657 |
if (icmp_init() < 0) panic("Failed to create the ICMP control socket. "); |
1da177e4c Linux-2.6.12-rc2 |
1658 1659 1660 1661 1662 |
/* * Initialise the multicast router */ #if defined(CONFIG_IP_MROUTE) |
03d2f897e ipv4: Do cleanup ... |
1663 1664 1665 |
if (ip_mr_init()) printk(KERN_CRIT "inet_init: Cannot init ipv4 mroute "); |
1da177e4c Linux-2.6.12-rc2 |
1666 1667 1668 |
#endif /* * Initialise per-cpu ipv4 mibs |
e905a9eda [NET] IPV4: Fix w... |
1669 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
1670 |
|
132adf546 [IPV4]: cleanup |
1671 |
if (init_ipv4_mibs()) |
03d2f897e ipv4: Do cleanup ... |
1672 1673 |
printk(KERN_CRIT "inet_init: Cannot init ipv4 mibs "); |
e905a9eda [NET] IPV4: Fix w... |
1674 |
|
1da177e4c Linux-2.6.12-rc2 |
1675 1676 1677 |
ipv4_proc_init(); ipfrag_init(); |
30e224d76 [IPV4]: Fix crash... |
1678 |
dev_add_pack(&ip_packet_type); |
1da177e4c Linux-2.6.12-rc2 |
1679 1680 1681 |
rc = 0; out: return rc; |
c319b4d76 net: ipv4: add IP... |
1682 1683 |
out_unregister_raw_proto: proto_unregister(&raw_prot); |
1da177e4c Linux-2.6.12-rc2 |
1684 1685 |
out_unregister_udp_proto: proto_unregister(&udp_prot); |
321efff7c [IPV4]: Fix order... |
1686 1687 |
out_unregister_tcp_proto: proto_unregister(&tcp_prot); |
e3826f1e9 net: reserve port... |
1688 1689 |
out_free_reserved_ports: kfree(sysctl_local_reserved_ports); |
1da177e4c Linux-2.6.12-rc2 |
1690 1691 |
goto out; } |
a536e0778 [IPV4]: inet_init... |
1692 |
fs_initcall(inet_init); |
1da177e4c Linux-2.6.12-rc2 |
1693 1694 1695 1696 |
/* ------------------------------------------------------------------------ */ #ifdef CONFIG_PROC_FS |
1da177e4c Linux-2.6.12-rc2 |
1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 |
static int __init ipv4_proc_init(void) { int rc = 0; if (raw_proc_init()) goto out_raw; if (tcp4_proc_init()) goto out_tcp; if (udp4_proc_init()) goto out_udp; |
c319b4d76 net: ipv4: add IP... |
1707 1708 |
if (ping_proc_init()) goto out_ping; |
1da177e4c Linux-2.6.12-rc2 |
1709 1710 1711 1712 1713 |
if (ip_misc_proc_init()) goto out_misc; out: return rc; out_misc: |
c319b4d76 net: ipv4: add IP... |
1714 1715 |
ping_proc_exit(); out_ping: |
1da177e4c Linux-2.6.12-rc2 |
1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 |
udp4_proc_exit(); out_udp: tcp4_proc_exit(); out_tcp: raw_proc_exit(); out_raw: rc = -ENOMEM; goto out; } #else /* CONFIG_PROC_FS */ static int __init ipv4_proc_init(void) { return 0; } #endif /* CONFIG_PROC_FS */ MODULE_ALIAS_NETPROTO(PF_INET); |