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net/sctp/protocol.c
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// SPDX-License-Identifier: GPL-2.0-or-later |
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/* SCTP kernel implementation |
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* (C) Copyright IBM Corp. 2001, 2004 * Copyright (c) 1999-2000 Cisco, Inc. * Copyright (c) 1999-2001 Motorola, Inc. * Copyright (c) 2001 Intel Corp. * Copyright (c) 2001 Nokia, Inc. * Copyright (c) 2001 La Monte H.P. Yarroll * |
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* This file is part of the SCTP kernel implementation |
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* * Initialization/cleanup for SCTP protocol support. * |
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* Please send any bug reports or fixes you make to the * email address(es): |
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* lksctp developers <linux-sctp@vger.kernel.org> |
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* |
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* Written or modified by: * La Monte H.P. Yarroll <piggy@acm.org> * Karl Knutson <karl@athena.chicago.il.us> * Jon Grimm <jgrimm@us.ibm.com> * Sridhar Samudrala <sri@us.ibm.com> * Daisy Chang <daisyc@us.ibm.com> * Ardelle Fan <ardelle.fan@intel.com> |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/module.h> #include <linux/init.h> #include <linux/netdevice.h> #include <linux/inetdevice.h> #include <linux/seq_file.h> |
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#include <linux/memblock.h> |
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#include <linux/highmem.h> #include <linux/swap.h> |
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#include <linux/slab.h> |
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#include <net/net_namespace.h> |
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#include <net/protocol.h> #include <net/ip.h> #include <net/ipv6.h> |
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#include <net/route.h> |
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#include <net/sctp/sctp.h> #include <net/addrconf.h> #include <net/inet_common.h> #include <net/inet_ecn.h> |
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#define MAX_SCTP_PORT_HASH_ENTRIES (64 * 1024) |
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/* Global data structures. */ |
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struct sctp_globals sctp_globals __read_mostly; |
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struct idr sctp_assocs_id; DEFINE_SPINLOCK(sctp_assocs_id_lock); |
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static struct sctp_pf *sctp_pf_inet6_specific; static struct sctp_pf *sctp_pf_inet_specific; static struct sctp_af *sctp_af_v4_specific; static struct sctp_af *sctp_af_v6_specific; |
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struct kmem_cache *sctp_chunk_cachep __read_mostly; struct kmem_cache *sctp_bucket_cachep __read_mostly; |
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|
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long sysctl_sctp_mem[3]; |
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int sysctl_sctp_rmem[3]; int sysctl_sctp_wmem[3]; |
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|
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/* Private helper to extract ipv4 address and stash them in * the protocol structure. */ static void sctp_v4_copy_addrlist(struct list_head *addrlist, struct net_device *dev) { struct in_device *in_dev; struct in_ifaddr *ifa; struct sctp_sockaddr_entry *addr; rcu_read_lock(); |
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if ((in_dev = __in_dev_get_rcu(dev)) == NULL) { |
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rcu_read_unlock(); return; } |
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in_dev_for_each_ifa_rcu(ifa, in_dev) { |
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/* Add the address to the local list. */ |
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addr = kzalloc(sizeof(*addr), GFP_ATOMIC); |
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if (addr) { |
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addr->a.v4.sin_family = AF_INET; |
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addr->a.v4.sin_addr.s_addr = ifa->ifa_local; |
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addr->valid = 1; INIT_LIST_HEAD(&addr->list); |
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list_add_tail(&addr->list, addrlist); } } rcu_read_unlock(); } /* Extract our IP addresses from the system and stash them in the * protocol structure. */ |
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static void sctp_get_local_addr_list(struct net *net) |
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{ struct net_device *dev; struct list_head *pos; struct sctp_af *af; |
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rcu_read_lock(); |
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for_each_netdev_rcu(net, dev) { |
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list_for_each(pos, &sctp_address_families) { |
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af = list_entry(pos, struct sctp_af, list); |
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af->copy_addrlist(&net->sctp.local_addr_list, dev); |
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} } |
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rcu_read_unlock(); |
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} |
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/* Free the existing local addresses. */ |
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static void sctp_free_local_addr_list(struct net *net) |
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{ struct sctp_sockaddr_entry *addr; struct list_head *pos, *temp; |
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list_for_each_safe(pos, temp, &net->sctp.local_addr_list) { |
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addr = list_entry(pos, struct sctp_sockaddr_entry, list); list_del(pos); kfree(addr); } } |
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/* Copy the local addresses which are valid for 'scope' into 'bp'. */ |
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int sctp_copy_local_addr_list(struct net *net, struct sctp_bind_addr *bp, |
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enum sctp_scope scope, gfp_t gfp, int copy_flags) |
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{ struct sctp_sockaddr_entry *addr; |
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union sctp_addr laddr; |
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int error = 0; |
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|
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rcu_read_lock(); |
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list_for_each_entry_rcu(addr, &net->sctp.local_addr_list, list) { |
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if (!addr->valid) continue; |
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if (!sctp_in_scope(net, &addr->a, scope)) continue; /* Now that the address is in scope, check to see if * the address type is really supported by the local * sock as well as the remote peer. */ if (addr->a.sa.sa_family == AF_INET && |
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(!(copy_flags & SCTP_ADDR4_ALLOWED) || !(copy_flags & SCTP_ADDR4_PEERSUPP))) |
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continue; if (addr->a.sa.sa_family == AF_INET6 && (!(copy_flags & SCTP_ADDR6_ALLOWED) || !(copy_flags & SCTP_ADDR6_PEERSUPP))) continue; |
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laddr = addr->a; /* also works for setting ipv6 address port */ laddr.v4.sin_port = htons(bp->port); if (sctp_bind_addr_state(bp, &laddr) != -1) |
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continue; |
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error = sctp_add_bind_addr(bp, &addr->a, sizeof(addr->a), SCTP_ADDR_SRC, GFP_ATOMIC); if (error) break; |
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} |
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rcu_read_unlock(); |
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return error; } |
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/* Copy over any ip options */ static void sctp_v4_copy_ip_options(struct sock *sk, struct sock *newsk) { struct inet_sock *newinet, *inet = inet_sk(sk); struct ip_options_rcu *inet_opt, *newopt = NULL; newinet = inet_sk(newsk); rcu_read_lock(); inet_opt = rcu_dereference(inet->inet_opt); if (inet_opt) { newopt = sock_kmalloc(newsk, sizeof(*inet_opt) + inet_opt->opt.optlen, GFP_ATOMIC); if (newopt) memcpy(newopt, inet_opt, sizeof(*inet_opt) + inet_opt->opt.optlen); else pr_err("%s: Failed to copy ip options ", __func__); } RCU_INIT_POINTER(newinet->inet_opt, newopt); rcu_read_unlock(); } /* Account for the IP options */ static int sctp_v4_ip_options_len(struct sock *sk) { struct inet_sock *inet = inet_sk(sk); struct ip_options_rcu *inet_opt; int len = 0; rcu_read_lock(); inet_opt = rcu_dereference(inet->inet_opt); if (inet_opt) len = inet_opt->opt.optlen; rcu_read_unlock(); return len; } |
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/* Initialize a sctp_addr from in incoming skb. */ static void sctp_v4_from_skb(union sctp_addr *addr, struct sk_buff *skb, int is_saddr) { |
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/* Always called on head skb, so this is safe */ struct sctphdr *sh = sctp_hdr(skb); struct sockaddr_in *sa = &addr->v4; |
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addr->v4.sin_family = AF_INET; |
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if (is_saddr) { |
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sa->sin_port = sh->source; sa->sin_addr.s_addr = ip_hdr(skb)->saddr; |
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} else { |
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sa->sin_port = sh->dest; sa->sin_addr.s_addr = ip_hdr(skb)->daddr; |
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} |
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memset(sa->sin_zero, 0, sizeof(sa->sin_zero)); |
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} /* Initialize an sctp_addr from a socket. */ static void sctp_v4_from_sk(union sctp_addr *addr, struct sock *sk) { addr->v4.sin_family = AF_INET; |
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addr->v4.sin_port = 0; |
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addr->v4.sin_addr.s_addr = inet_sk(sk)->inet_rcv_saddr; |
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memset(addr->v4.sin_zero, 0, sizeof(addr->v4.sin_zero)); |
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} /* Initialize sk->sk_rcv_saddr from sctp_addr. */ static void sctp_v4_to_sk_saddr(union sctp_addr *addr, struct sock *sk) { |
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inet_sk(sk)->inet_rcv_saddr = addr->v4.sin_addr.s_addr; |
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} /* Initialize sk->sk_daddr from sctp_addr. */ static void sctp_v4_to_sk_daddr(union sctp_addr *addr, struct sock *sk) { |
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inet_sk(sk)->inet_daddr = addr->v4.sin_addr.s_addr; |
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} /* Initialize a sctp_addr from an address parameter. */ static void sctp_v4_from_addr_param(union sctp_addr *addr, union sctp_addr_param *param, |
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__be16 port, int iif) |
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{ addr->v4.sin_family = AF_INET; addr->v4.sin_port = port; addr->v4.sin_addr.s_addr = param->v4.addr.s_addr; |
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memset(addr->v4.sin_zero, 0, sizeof(addr->v4.sin_zero)); |
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} /* Initialize an address parameter from a sctp_addr and return the length * of the address parameter. */ static int sctp_v4_to_addr_param(const union sctp_addr *addr, union sctp_addr_param *param) { |
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int length = sizeof(struct sctp_ipv4addr_param); |
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param->v4.param_hdr.type = SCTP_PARAM_IPV4_ADDRESS; |
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param->v4.param_hdr.length = htons(length); |
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param->v4.addr.s_addr = addr->v4.sin_addr.s_addr; |
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return length; } /* Initialize a sctp_addr from a dst_entry. */ |
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static void sctp_v4_dst_saddr(union sctp_addr *saddr, struct flowi4 *fl4, |
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__be16 port) |
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{ |
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saddr->v4.sin_family = AF_INET; saddr->v4.sin_port = port; |
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saddr->v4.sin_addr.s_addr = fl4->saddr; |
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memset(saddr->v4.sin_zero, 0, sizeof(saddr->v4.sin_zero)); |
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} /* Compare two addresses exactly. */ static int sctp_v4_cmp_addr(const union sctp_addr *addr1, const union sctp_addr *addr2) { if (addr1->sa.sa_family != addr2->sa.sa_family) return 0; if (addr1->v4.sin_port != addr2->v4.sin_port) return 0; if (addr1->v4.sin_addr.s_addr != addr2->v4.sin_addr.s_addr) return 0; return 1; } /* Initialize addr struct to INADDR_ANY. */ |
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static void sctp_v4_inaddr_any(union sctp_addr *addr, __be16 port) |
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{ addr->v4.sin_family = AF_INET; |
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addr->v4.sin_addr.s_addr = htonl(INADDR_ANY); |
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addr->v4.sin_port = port; |
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memset(addr->v4.sin_zero, 0, sizeof(addr->v4.sin_zero)); |
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} /* Is this a wildcard address? */ static int sctp_v4_is_any(const union sctp_addr *addr) { |
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return htonl(INADDR_ANY) == addr->v4.sin_addr.s_addr; |
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} /* This function checks if the address is a valid address to be used for * SCTP binding. * * Output: * Return 0 - If the address is a non-unicast or an illegal address. * Return 1 - If the address is a unicast. */ |
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static int sctp_v4_addr_valid(union sctp_addr *addr, struct sctp_sock *sp, const struct sk_buff *skb) |
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{ |
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/* IPv4 addresses not allowed */ if (sp && ipv6_only_sock(sctp_opt2sk(sp))) return 0; |
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/* Is this a non-unicast address or a unusable SCTP address? */ |
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if (IS_IPV4_UNUSABLE_ADDRESS(addr->v4.sin_addr.s_addr)) |
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return 0; |
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/* Is this a broadcast address? */ |
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if (skb && skb_rtable(skb)->rt_flags & RTCF_BROADCAST) |
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return 0; |
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|
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return 1; } /* Should this be available for binding? */ static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp) { |
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struct net *net = sock_net(&sp->inet.sk); int ret = inet_addr_type(net, addr->v4.sin_addr.s_addr); |
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if (addr->v4.sin_addr.s_addr != htonl(INADDR_ANY) && |
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ret != RTN_LOCAL && !sp->inet.freebind && |
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!net->ipv4.sysctl_ip_nonlocal_bind) |
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return 0; |
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|
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if (ipv6_only_sock(sctp_opt2sk(sp))) return 0; |
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return 1; } /* Checking the loopback, private and other address scopes as defined in * RFC 1918. The IPv4 scoping is based on the draft for SCTP IPv4 * scoping <draft-stewart-tsvwg-sctp-ipv4-00.txt>. * * Level 0 - unusable SCTP addresses * Level 1 - loopback address * Level 2 - link-local addresses * Level 3 - private addresses. * Level 4 - global addresses * For INIT and INIT-ACK address list, let L be the level of |
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* requested destination address, sender and receiver |
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* SHOULD include all of its addresses with level greater * than or equal to L. |
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* * IPv4 scoping can be controlled through sysctl option * net.sctp.addr_scope_policy |
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*/ |
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static enum sctp_scope sctp_v4_scope(union sctp_addr *addr) |
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{ |
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enum sctp_scope retval; |
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|
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/* Check for unusable SCTP addresses. */ |
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if (IS_IPV4_UNUSABLE_ADDRESS(addr->v4.sin_addr.s_addr)) { |
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retval = SCTP_SCOPE_UNUSABLE; |
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} else if (ipv4_is_loopback(addr->v4.sin_addr.s_addr)) { |
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retval = SCTP_SCOPE_LOOPBACK; |
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} else if (ipv4_is_linklocal_169(addr->v4.sin_addr.s_addr)) { |
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retval = SCTP_SCOPE_LINK; |
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} else if (ipv4_is_private_10(addr->v4.sin_addr.s_addr) || ipv4_is_private_172(addr->v4.sin_addr.s_addr) || ipv4_is_private_192(addr->v4.sin_addr.s_addr)) { |
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retval = SCTP_SCOPE_PRIVATE; } else { retval = SCTP_SCOPE_GLOBAL; } return retval; } /* Returns a valid dst cache entry for the given source and destination ip * addresses. If an association is passed, trys to get a dst entry with a * source address that matches an address in the bind address list. */ |
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389 390 |
static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr, struct flowi *fl, struct sock *sk) |
1da177e4c Linux-2.6.12-rc2 |
391 |
{ |
da0420bee sctp: clean up ro... |
392 |
struct sctp_association *asoc = t->asoc; |
1da177e4c Linux-2.6.12-rc2 |
393 |
struct rtable *rt; |
582eea230 sctp: fix possibl... |
394 395 |
struct flowi _fl; struct flowi4 *fl4 = &_fl.u.ip4; |
1da177e4c Linux-2.6.12-rc2 |
396 |
struct sctp_bind_addr *bp; |
1da177e4c Linux-2.6.12-rc2 |
397 |
struct sctp_sockaddr_entry *laddr; |
1da177e4c Linux-2.6.12-rc2 |
398 |
struct dst_entry *dst = NULL; |
da0420bee sctp: clean up ro... |
399 |
union sctp_addr *daddr = &t->ipaddr; |
1da177e4c Linux-2.6.12-rc2 |
400 |
union sctp_addr dst_saddr; |
8a9c58d28 sctp: add support... |
401 |
__u8 tos = inet_sk(sk)->tos; |
1da177e4c Linux-2.6.12-rc2 |
402 |
|
8a9c58d28 sctp: add support... |
403 404 |
if (t->dscp & SCTP_DSCP_SET_MASK) tos = t->dscp & SCTP_DSCP_VAL_MASK; |
582eea230 sctp: fix possibl... |
405 |
memset(&_fl, 0x0, sizeof(_fl)); |
9914ae3ca sctp: cache the i... |
406 407 408 |
fl4->daddr = daddr->v4.sin_addr.s_addr; fl4->fl4_dport = daddr->v4.sin_port; fl4->flowi4_proto = IPPROTO_SCTP; |
1da177e4c Linux-2.6.12-rc2 |
409 |
if (asoc) { |
8a9c58d28 sctp: add support... |
410 |
fl4->flowi4_tos = RT_CONN_FLAGS_TOS(asoc->base.sk, tos); |
9914ae3ca sctp: cache the i... |
411 412 |
fl4->flowi4_oif = asoc->base.sk->sk_bound_dev_if; fl4->fl4_sport = htons(asoc->base.bind_addr.port); |
1da177e4c Linux-2.6.12-rc2 |
413 |
} |
6429d3dc4 sctp: missing set... |
414 |
if (saddr) { |
9914ae3ca sctp: cache the i... |
415 |
fl4->saddr = saddr->v4.sin_addr.s_addr; |
ecf938fe7 sctp: set flow sp... |
416 417 |
if (!fl4->fl4_sport) fl4->fl4_sport = saddr->v4.sin_port; |
6429d3dc4 sctp: missing set... |
418 |
} |
1da177e4c Linux-2.6.12-rc2 |
419 |
|
bb33381d0 net: sctp: rework... |
420 421 |
pr_debug("%s: dst:%pI4, src:%pI4 - ", __func__, &fl4->daddr, &fl4->saddr); |
1da177e4c Linux-2.6.12-rc2 |
422 |
|
bb2db45b5 sctp: Enable sctp... |
423 |
rt = ip_route_output_key(sock_net(sk), fl4); |
582eea230 sctp: fix possibl... |
424 |
if (!IS_ERR(rt)) { |
d8d1f30b9 net-next: remove ... |
425 |
dst = &rt->dst; |
582eea230 sctp: fix possibl... |
426 427 428 |
t->dst = dst; memcpy(fl, &_fl, sizeof(_fl)); } |
1da177e4c Linux-2.6.12-rc2 |
429 430 431 432 433 434 435 436 |
/* If there is no association or if a source address is passed, no * more validation is required. */ if (!asoc || saddr) goto out; bp = &asoc->base.bind_addr; |
1da177e4c Linux-2.6.12-rc2 |
437 438 439 440 441 |
if (dst) { /* Walk through the bind address list and look for a bind * address that matches the source address of the returned dst. */ |
18a353f42 sctp: Use flowi4'... |
442 |
sctp_v4_dst_saddr(&dst_saddr, fl4, htons(bp->port)); |
559cf710b [SCTP]: Convert b... |
443 444 |
rcu_read_lock(); list_for_each_entry_rcu(laddr, &bp->address_list, list) { |
8a07eb0a5 sctp: Add ASCONF ... |
445 446 447 |
if (!laddr->valid || (laddr->state == SCTP_ADDR_DEL) || (laddr->state != SCTP_ADDR_SRC && !asoc->src_out_of_asoc_ok)) |
dc022a987 [SCTP]: ADDIP: Do... |
448 |
continue; |
854d43a46 [SCTP]: Annotate ... |
449 |
if (sctp_v4_cmp_addr(&dst_saddr, &laddr->a)) |
1da177e4c Linux-2.6.12-rc2 |
450 451 |
goto out_unlock; } |
559cf710b [SCTP]: Convert b... |
452 |
rcu_read_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
453 454 455 456 457 458 459 460 461 462 463 |
/* None of the bound addresses match the source address of the * dst. So release it. */ dst_release(dst); dst = NULL; } /* Walk through the bind address list and try to get a dst that * matches a bind address as the source address. */ |
559cf710b [SCTP]: Convert b... |
464 465 |
rcu_read_lock(); list_for_each_entry_rcu(laddr, &bp->address_list, list) { |
0ca50d12f sctp: fix src add... |
466 |
struct net_device *odev; |
559cf710b [SCTP]: Convert b... |
467 468 |
if (!laddr->valid) continue; |
07868284e sctp: reduce inde... |
469 470 471 472 473 474 475 |
if (laddr->state != SCTP_ADDR_SRC || AF_INET != laddr->a.sa.sa_family) continue; fl4->fl4_sport = laddr->a.v4.sin_port; flowi4_update_output(fl4, asoc->base.sk->sk_bound_dev_if, |
8a9c58d28 sctp: add support... |
476 |
RT_CONN_FLAGS_TOS(asoc->base.sk, tos), |
07868284e sctp: reduce inde... |
477 478 479 480 481 482 |
daddr->v4.sin_addr.s_addr, laddr->a.v4.sin_addr.s_addr); rt = ip_route_output_key(sock_net(sk), fl4); if (IS_ERR(rt)) continue; |
0ca50d12f sctp: fix src add... |
483 484 485 486 487 |
/* Ensure the src address belongs to the output * interface. */ odev = __ip_dev_find(sock_net(sk), laddr->a.v4.sin_addr.s_addr, false); |
d82f0f1fc sctp: fix dst leak |
488 |
if (!odev || odev->ifindex != fl4->flowi4_oif) { |
582eea230 sctp: fix possibl... |
489 |
if (!dst) { |
4a31a6b19 sctp: fix dst ref... |
490 |
dst = &rt->dst; |
582eea230 sctp: fix possibl... |
491 492 493 |
t->dst = dst; memcpy(fl, &_fl, sizeof(_fl)); } else { |
410f03831 sctp: add routing... |
494 |
dst_release(&rt->dst); |
582eea230 sctp: fix possibl... |
495 |
} |
0ca50d12f sctp: fix src add... |
496 |
continue; |
d82f0f1fc sctp: fix dst leak |
497 |
} |
0ca50d12f sctp: fix src add... |
498 |
|
4a31a6b19 sctp: fix dst ref... |
499 |
dst_release(dst); |
07868284e sctp: reduce inde... |
500 |
dst = &rt->dst; |
582eea230 sctp: fix possibl... |
501 502 |
t->dst = dst; memcpy(fl, &_fl, sizeof(_fl)); |
07868284e sctp: reduce inde... |
503 |
break; |
1da177e4c Linux-2.6.12-rc2 |
504 505 506 |
} out_unlock: |
559cf710b [SCTP]: Convert b... |
507 |
rcu_read_unlock(); |
1da177e4c Linux-2.6.12-rc2 |
508 |
out: |
582eea230 sctp: fix possibl... |
509 |
if (dst) { |
bb33381d0 net: sctp: rework... |
510 511 |
pr_debug("rt_dst:%pI4, rt_src:%pI4 ", |
582eea230 sctp: fix possibl... |
512 513 514 |
&fl->u.ip4.daddr, &fl->u.ip4.saddr); } else { t->dst = NULL; |
bb33381d0 net: sctp: rework... |
515 516 |
pr_debug("no route "); |
582eea230 sctp: fix possibl... |
517 |
} |
1da177e4c Linux-2.6.12-rc2 |
518 519 520 521 522 |
} /* For v4, the source address is cached in the route entry(dst). So no need * to cache it separately and hence this is an empty routine. */ |
e51171019 [SCTP]: Fix NULL ... |
523 |
static void sctp_v4_get_saddr(struct sctp_sock *sk, |
9914ae3ca sctp: cache the i... |
524 |
struct sctp_transport *t, |
9914ae3ca sctp: cache the i... |
525 |
struct flowi *fl) |
1da177e4c Linux-2.6.12-rc2 |
526 |
{ |
9914ae3ca sctp: cache the i... |
527 528 |
union sctp_addr *saddr = &t->saddr; struct rtable *rt = (struct rtable *)t->dst; |
23ec47a08 [SCTP]: Fix poten... |
529 |
|
1da177e4c Linux-2.6.12-rc2 |
530 531 |
if (rt) { saddr->v4.sin_family = AF_INET; |
902ebd3e0 sctp: Remove rt->... |
532 |
saddr->v4.sin_addr.s_addr = fl->u.ip4.saddr; |
1da177e4c Linux-2.6.12-rc2 |
533 534 535 536 537 538 |
} } /* What interface did this skb arrive on? */ static int sctp_v4_skb_iif(const struct sk_buff *skb) { |
92101b3b2 ipv4: Prepare for... |
539 |
return inet_iif(skb); |
1da177e4c Linux-2.6.12-rc2 |
540 541 542 543 544 |
} /* Was this packet marked by Explicit Congestion Notification? */ static int sctp_v4_is_ce(const struct sk_buff *skb) { |
eddc9ec53 [SK_BUFF]: Introd... |
545 |
return INET_ECN_is_ce(ip_hdr(skb)->tos); |
1da177e4c Linux-2.6.12-rc2 |
546 547 548 549 |
} /* Create and initialize a new sk for the socket returned by accept(). */ static struct sock *sctp_v4_create_accept_sk(struct sock *sk, |
cdfbabfb2 net: Work around ... |
550 551 |
struct sctp_association *asoc, bool kern) |
1da177e4c Linux-2.6.12-rc2 |
552 |
{ |
3b1e0a655 [NET] NETNS: Omit... |
553 |
struct sock *newsk = sk_alloc(sock_net(sk), PF_INET, GFP_KERNEL, |
cdfbabfb2 net: Work around ... |
554 |
sk->sk_prot, kern); |
914e1c8b6 sctp: Inherit all... |
555 |
struct inet_sock *newinet; |
1da177e4c Linux-2.6.12-rc2 |
556 557 558 559 560 |
if (!newsk) goto out; sock_init_data(NULL, newsk); |
914e1c8b6 sctp: Inherit all... |
561 |
sctp_copy_sock(newsk, sk, asoc); |
1da177e4c Linux-2.6.12-rc2 |
562 |
sock_reset_flag(newsk, SOCK_ZAPPED); |
b7e10c25b sctp: Add ip opti... |
563 |
sctp_v4_copy_ip_options(sk, newsk); |
1da177e4c Linux-2.6.12-rc2 |
564 |
newinet = inet_sk(newsk); |
c720c7e83 inet: rename some... |
565 |
newinet->inet_daddr = asoc->peer.primary_addr.v4.sin_addr.s_addr; |
1da177e4c Linux-2.6.12-rc2 |
566 |
|
e6848976b [NET]: Cleanup IN... |
567 |
sk_refcnt_debug_inc(newsk); |
1da177e4c Linux-2.6.12-rc2 |
568 569 570 571 572 573 574 575 576 |
if (newsk->sk_prot->init(newsk)) { sk_common_release(newsk); newsk = NULL; } out: return newsk; } |
299ee123e sctp: Fixup v4map... |
577 |
static int sctp_v4_addr_to_user(struct sctp_sock *sp, union sctp_addr *addr) |
1da177e4c Linux-2.6.12-rc2 |
578 |
{ |
299ee123e sctp: Fixup v4map... |
579 |
/* No address mapping for V4 sockets */ |
09279e615 sctp: initialize ... |
580 |
memset(addr->v4.sin_zero, 0, sizeof(addr->v4.sin_zero)); |
299ee123e sctp: Fixup v4map... |
581 |
return sizeof(struct sockaddr_in); |
1da177e4c Linux-2.6.12-rc2 |
582 583 584 585 586 |
} /* Dump the v4 addr to the seq file. */ static void sctp_v4_seq_dump_addr(struct seq_file *seq, union sctp_addr *addr) { |
21454aaad net: replace NIPQ... |
587 |
seq_printf(seq, "%pI4 ", &addr->v4.sin_addr); |
1da177e4c Linux-2.6.12-rc2 |
588 |
} |
b9031d9d8 sctp: Fix ECN mar... |
589 590 591 592 |
static void sctp_v4_ecn_capable(struct sock *sk) { INET_ECN_xmit(sk); } |
9c3b57518 net: sctp: Conver... |
593 |
static void sctp_addr_wq_timeout_handler(struct timer_list *t) |
9f7d653b6 sctp: Add Auto-AS... |
594 |
{ |
9c3b57518 net: sctp: Conver... |
595 |
struct net *net = from_timer(net, t, sctp.addr_wq_timer); |
9f7d653b6 sctp: Add Auto-AS... |
596 597 |
struct sctp_sockaddr_entry *addrw, *temp; struct sctp_sock *sp; |
4db67e808 sctp: Make the ad... |
598 |
spin_lock_bh(&net->sctp.addr_wq_lock); |
9f7d653b6 sctp: Add Auto-AS... |
599 |
|
4db67e808 sctp: Make the ad... |
600 |
list_for_each_entry_safe(addrw, temp, &net->sctp.addr_waitq, list) { |
bb33381d0 net: sctp: rework... |
601 602 603 604 |
pr_debug("%s: the first ent in wq:%p is addr:%pISc for cmd:%d at " "entry:%p ", __func__, &net->sctp.addr_waitq, &addrw->a.sa, addrw->state, addrw); |
9f7d653b6 sctp: Add Auto-AS... |
605 |
|
dfd56b8b3 net: use IS_ENABL... |
606 |
#if IS_ENABLED(CONFIG_IPV6) |
9f7d653b6 sctp: Add Auto-AS... |
607 608 609 610 611 612 613 614 615 616 |
/* Now we send an ASCONF for each association */ /* Note. we currently don't handle link local IPv6 addressees */ if (addrw->a.sa.sa_family == AF_INET6) { struct in6_addr *in6; if (ipv6_addr_type(&addrw->a.v6.sin6_addr) & IPV6_ADDR_LINKLOCAL) goto free_next; in6 = (struct in6_addr *)&addrw->a.v6.sin6_addr; |
4db67e808 sctp: Make the ad... |
617 |
if (ipv6_chk_addr(net, in6, NULL, 0) == 0 && |
9f7d653b6 sctp: Add Auto-AS... |
618 619 |
addrw->state == SCTP_ADDR_NEW) { unsigned long timeo_val; |
bb33381d0 net: sctp: rework... |
620 621 622 623 |
pr_debug("%s: this is on DAD, trying %d sec " "later ", __func__, SCTP_ADDRESS_TICK_DELAY); |
9f7d653b6 sctp: Add Auto-AS... |
624 625 |
timeo_val = jiffies; timeo_val += msecs_to_jiffies(SCTP_ADDRESS_TICK_DELAY); |
4db67e808 sctp: Make the ad... |
626 |
mod_timer(&net->sctp.addr_wq_timer, timeo_val); |
9f7d653b6 sctp: Add Auto-AS... |
627 628 629 |
break; } } |
5d0c90cf4 sctp: Guard IPV6 ... |
630 |
#endif |
4db67e808 sctp: Make the ad... |
631 |
list_for_each_entry(sp, &net->sctp.auto_asconf_splist, auto_asconf_list) { |
9f7d653b6 sctp: Add Auto-AS... |
632 633 634 635 636 637 |
struct sock *sk; sk = sctp_opt2sk(sp); /* ignore bound-specific endpoints */ if (!sctp_is_ep_boundall(sk)) continue; |
5bc1d1b4a sctp: remove macr... |
638 |
bh_lock_sock(sk); |
9f7d653b6 sctp: Add Auto-AS... |
639 |
if (sctp_asconf_mgmt(sp, addrw) < 0) |
bb33381d0 net: sctp: rework... |
640 641 |
pr_debug("%s: sctp_asconf_mgmt failed ", __func__); |
5bc1d1b4a sctp: remove macr... |
642 |
bh_unlock_sock(sk); |
9f7d653b6 sctp: Add Auto-AS... |
643 |
} |
39d84a58a sctp: fix warning... |
644 |
#if IS_ENABLED(CONFIG_IPV6) |
9f7d653b6 sctp: Add Auto-AS... |
645 |
free_next: |
39d84a58a sctp: fix warning... |
646 |
#endif |
9f7d653b6 sctp: Add Auto-AS... |
647 648 649 |
list_del(&addrw->list); kfree(addrw); } |
4db67e808 sctp: Make the ad... |
650 |
spin_unlock_bh(&net->sctp.addr_wq_lock); |
9f7d653b6 sctp: Add Auto-AS... |
651 |
} |
4db67e808 sctp: Make the ad... |
652 |
static void sctp_free_addr_wq(struct net *net) |
9f7d653b6 sctp: Add Auto-AS... |
653 654 655 |
{ struct sctp_sockaddr_entry *addrw; struct sctp_sockaddr_entry *temp; |
4db67e808 sctp: Make the ad... |
656 657 658 |
spin_lock_bh(&net->sctp.addr_wq_lock); del_timer(&net->sctp.addr_wq_timer); list_for_each_entry_safe(addrw, temp, &net->sctp.addr_waitq, list) { |
9f7d653b6 sctp: Add Auto-AS... |
659 660 661 |
list_del(&addrw->list); kfree(addrw); } |
4db67e808 sctp: Make the ad... |
662 |
spin_unlock_bh(&net->sctp.addr_wq_lock); |
9f7d653b6 sctp: Add Auto-AS... |
663 664 665 666 667 |
} /* lookup the entry for the same address in the addr_waitq * sctp_addr_wq MUST be locked */ |
4db67e808 sctp: Make the ad... |
668 669 |
static struct sctp_sockaddr_entry *sctp_addr_wq_lookup(struct net *net, struct sctp_sockaddr_entry *addr) |
9f7d653b6 sctp: Add Auto-AS... |
670 671 |
{ struct sctp_sockaddr_entry *addrw; |
4db67e808 sctp: Make the ad... |
672 |
list_for_each_entry(addrw, &net->sctp.addr_waitq, list) { |
9f7d653b6 sctp: Add Auto-AS... |
673 674 675 676 677 678 679 680 681 682 683 684 685 686 |
if (addrw->a.sa.sa_family != addr->a.sa.sa_family) continue; if (addrw->a.sa.sa_family == AF_INET) { if (addrw->a.v4.sin_addr.s_addr == addr->a.v4.sin_addr.s_addr) return addrw; } else if (addrw->a.sa.sa_family == AF_INET6) { if (ipv6_addr_equal(&addrw->a.v6.sin6_addr, &addr->a.v6.sin6_addr)) return addrw; } } return NULL; } |
4db67e808 sctp: Make the ad... |
687 |
void sctp_addr_wq_mgmt(struct net *net, struct sctp_sockaddr_entry *addr, int cmd) |
9f7d653b6 sctp: Add Auto-AS... |
688 689 690 691 692 693 694 695 696 |
{ struct sctp_sockaddr_entry *addrw; unsigned long timeo_val; /* first, we check if an opposite message already exist in the queue. * If we found such message, it is removed. * This operation is a bit stupid, but the DHCP client attaches the * new address after a couple of addition and deletion of that address */ |
4db67e808 sctp: Make the ad... |
697 |
spin_lock_bh(&net->sctp.addr_wq_lock); |
9f7d653b6 sctp: Add Auto-AS... |
698 |
/* Offsets existing events in addr_wq */ |
4db67e808 sctp: Make the ad... |
699 |
addrw = sctp_addr_wq_lookup(net, addr); |
9f7d653b6 sctp: Add Auto-AS... |
700 701 |
if (addrw) { if (addrw->state != cmd) { |
bb33381d0 net: sctp: rework... |
702 703 704 705 |
pr_debug("%s: offsets existing entry for %d, addr:%pISc " "in wq:%p ", __func__, addrw->state, &addrw->a.sa, &net->sctp.addr_waitq); |
9f7d653b6 sctp: Add Auto-AS... |
706 707 708 |
list_del(&addrw->list); kfree(addrw); } |
4db67e808 sctp: Make the ad... |
709 |
spin_unlock_bh(&net->sctp.addr_wq_lock); |
9f7d653b6 sctp: Add Auto-AS... |
710 711 712 713 714 715 |
return; } /* OK, we have to add the new address to the wait queue */ addrw = kmemdup(addr, sizeof(struct sctp_sockaddr_entry), GFP_ATOMIC); if (addrw == NULL) { |
4db67e808 sctp: Make the ad... |
716 |
spin_unlock_bh(&net->sctp.addr_wq_lock); |
9f7d653b6 sctp: Add Auto-AS... |
717 718 719 |
return; } addrw->state = cmd; |
4db67e808 sctp: Make the ad... |
720 |
list_add_tail(&addrw->list, &net->sctp.addr_waitq); |
bb33381d0 net: sctp: rework... |
721 722 723 724 |
pr_debug("%s: add new entry for cmd:%d, addr:%pISc in wq:%p ", __func__, addrw->state, &addrw->a.sa, &net->sctp.addr_waitq); |
9f7d653b6 sctp: Add Auto-AS... |
725 |
|
4db67e808 sctp: Make the ad... |
726 |
if (!timer_pending(&net->sctp.addr_wq_timer)) { |
9f7d653b6 sctp: Add Auto-AS... |
727 728 |
timeo_val = jiffies; timeo_val += msecs_to_jiffies(SCTP_ADDRESS_TICK_DELAY); |
4db67e808 sctp: Make the ad... |
729 |
mod_timer(&net->sctp.addr_wq_timer, timeo_val); |
9f7d653b6 sctp: Add Auto-AS... |
730 |
} |
4db67e808 sctp: Make the ad... |
731 |
spin_unlock_bh(&net->sctp.addr_wq_lock); |
9f7d653b6 sctp: Add Auto-AS... |
732 |
} |
293035479 [SCTP]: Add RCU s... |
733 734 735 736 737 738 |
/* Event handler for inet address addition/deletion events. * The sctp_local_addr_list needs to be protocted by a spin lock since * multiple notifiers (say IPv4 and IPv6) may be running at the same * time and thus corrupt the list. * The reader side is protected with RCU. */ |
24123186f [SCTP]: make 2 fu... |
739 740 |
static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev, void *ptr) |
1da177e4c Linux-2.6.12-rc2 |
741 |
{ |
29c7cf961 [SCTP]: Handle ad... |
742 |
struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; |
293035479 [SCTP]: Add RCU s... |
743 744 |
struct sctp_sockaddr_entry *addr = NULL; struct sctp_sockaddr_entry *temp; |
4db67e808 sctp: Make the ad... |
745 |
struct net *net = dev_net(ifa->ifa_dev->dev); |
22626216c [SCTP]: Fix local... |
746 |
int found = 0; |
1da177e4c Linux-2.6.12-rc2 |
747 |
|
29c7cf961 [SCTP]: Handle ad... |
748 749 |
switch (ev) { case NETDEV_UP: |
400b8b9a2 sctp: allocate sc... |
750 |
addr = kzalloc(sizeof(*addr), GFP_ATOMIC); |
29c7cf961 [SCTP]: Handle ad... |
751 752 |
if (addr) { addr->a.v4.sin_family = AF_INET; |
29c7cf961 [SCTP]: Handle ad... |
753 |
addr->a.v4.sin_addr.s_addr = ifa->ifa_local; |
293035479 [SCTP]: Add RCU s... |
754 |
addr->valid = 1; |
4db67e808 sctp: Make the ad... |
755 756 757 758 |
spin_lock_bh(&net->sctp.local_addr_lock); list_add_tail_rcu(&addr->list, &net->sctp.local_addr_list); sctp_addr_wq_mgmt(net, addr, SCTP_ADDR_NEW); spin_unlock_bh(&net->sctp.local_addr_lock); |
29c7cf961 [SCTP]: Handle ad... |
759 760 761 |
} break; case NETDEV_DOWN: |
4db67e808 sctp: Make the ad... |
762 |
spin_lock_bh(&net->sctp.local_addr_lock); |
293035479 [SCTP]: Add RCU s... |
763 |
list_for_each_entry_safe(addr, temp, |
4db67e808 sctp: Make the ad... |
764 |
&net->sctp.local_addr_list, list) { |
a40a7d15b [SCTP]: IPv4 vs I... |
765 766 767 |
if (addr->a.sa.sa_family == AF_INET && addr->a.v4.sin_addr.s_addr == ifa->ifa_local) { |
4db67e808 sctp: Make the ad... |
768 |
sctp_addr_wq_mgmt(net, addr, SCTP_ADDR_DEL); |
22626216c [SCTP]: Fix local... |
769 |
found = 1; |
293035479 [SCTP]: Add RCU s... |
770 771 |
addr->valid = 0; list_del_rcu(&addr->list); |
29c7cf961 [SCTP]: Handle ad... |
772 773 774 |
break; } } |
4db67e808 sctp: Make the ad... |
775 |
spin_unlock_bh(&net->sctp.local_addr_lock); |
22626216c [SCTP]: Fix local... |
776 |
if (found) |
1231f0baa net,rcu: convert ... |
777 |
kfree_rcu(addr, rcu); |
29c7cf961 [SCTP]: Handle ad... |
778 779 |
break; } |
1da177e4c Linux-2.6.12-rc2 |
780 781 782 783 784 785 786 787 |
return NOTIFY_DONE; } /* * Initialize the control inode/socket with a control endpoint data * structure. This endpoint is reserved exclusively for the OOTB processing. */ |
2ce955035 sctp: Make the ct... |
788 |
static int sctp_ctl_sock_init(struct net *net) |
1da177e4c Linux-2.6.12-rc2 |
789 790 |
{ int err; |
fb13d9f9e SCTP: change sctp... |
791 |
sa_family_t family = PF_INET; |
1da177e4c Linux-2.6.12-rc2 |
792 793 794 |
if (sctp_get_pf_specific(PF_INET6)) family = PF_INET6; |
1da177e4c Linux-2.6.12-rc2 |
795 |
|
2ce955035 sctp: Make the ct... |
796 797 |
err = inet_ctl_sock_create(&net->sctp.ctl_sock, family, SOCK_SEQPACKET, IPPROTO_SCTP, net); |
fb13d9f9e SCTP: change sctp... |
798 799 800 |
/* If IPv6 socket could not be created, try the IPv4 socket */ if (err < 0 && family == PF_INET6) |
2ce955035 sctp: Make the ct... |
801 |
err = inet_ctl_sock_create(&net->sctp.ctl_sock, AF_INET, |
fb13d9f9e SCTP: change sctp... |
802 |
SOCK_SEQPACKET, IPPROTO_SCTP, |
2ce955035 sctp: Make the ct... |
803 |
net); |
fb13d9f9e SCTP: change sctp... |
804 |
|
1da177e4c Linux-2.6.12-rc2 |
805 |
if (err < 0) { |
145ce502e net/sctp: Use pr_... |
806 807 |
pr_err("Failed to create the SCTP control socket "); |
1da177e4c Linux-2.6.12-rc2 |
808 809 |
return err; } |
1da177e4c Linux-2.6.12-rc2 |
810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 |
return 0; } /* Register address family specific functions. */ int sctp_register_af(struct sctp_af *af) { switch (af->sa_family) { case AF_INET: if (sctp_af_v4_specific) return 0; sctp_af_v4_specific = af; break; case AF_INET6: if (sctp_af_v6_specific) return 0; sctp_af_v6_specific = af; break; default: return 0; } INIT_LIST_HEAD(&af->list); list_add_tail(&af->list, &sctp_address_families); return 1; } /* Get the table of functions for manipulating a particular address * family. */ struct sctp_af *sctp_get_af_specific(sa_family_t family) { switch (family) { case AF_INET: return sctp_af_v4_specific; case AF_INET6: return sctp_af_v6_specific; default: return NULL; } } /* Common code to initialize a AF_INET msg_name. */ static void sctp_inet_msgname(char *msgname, int *addr_len) { struct sockaddr_in *sin; sin = (struct sockaddr_in *)msgname; *addr_len = sizeof(struct sockaddr_in); sin->sin_family = AF_INET; memset(sin->sin_zero, 0, sizeof(sin->sin_zero)); } /* Copy the primary address of the peer primary address as the msg_name. */ static void sctp_inet_event_msgname(struct sctp_ulpevent *event, char *msgname, int *addr_len) { struct sockaddr_in *sin, *sinfrom; if (msgname) { struct sctp_association *asoc; asoc = event->asoc; sctp_inet_msgname(msgname, addr_len); sin = (struct sockaddr_in *)msgname; sinfrom = &asoc->peer.primary_addr.v4; sin->sin_port = htons(asoc->peer.port); sin->sin_addr.s_addr = sinfrom->sin_addr.s_addr; } } /* Initialize and copy out a msgname from an inbound skb. */ static void sctp_inet_skb_msgname(struct sk_buff *skb, char *msgname, int *len) { |
1da177e4c Linux-2.6.12-rc2 |
883 |
if (msgname) { |
2c0fd387b [SCTP]: Introduce... |
884 885 |
struct sctphdr *sh = sctp_hdr(skb); struct sockaddr_in *sin = (struct sockaddr_in *)msgname; |
1da177e4c Linux-2.6.12-rc2 |
886 |
sctp_inet_msgname(msgname, len); |
1da177e4c Linux-2.6.12-rc2 |
887 |
sin->sin_port = sh->source; |
eddc9ec53 [SK_BUFF]: Introd... |
888 |
sin->sin_addr.s_addr = ip_hdr(skb)->saddr; |
1da177e4c Linux-2.6.12-rc2 |
889 890 891 892 893 894 895 |
} } /* Do we support this AF? */ static int sctp_inet_af_supported(sa_family_t family, struct sctp_sock *sp) { /* PF_INET only supports AF_INET addresses. */ |
a02cec215 net: return opera... |
896 |
return AF_INET == family; |
1da177e4c Linux-2.6.12-rc2 |
897 898 899 900 901 902 903 904 905 906 |
} /* Address matching with wildcards allowed. */ static int sctp_inet_cmp_addr(const union sctp_addr *addr1, const union sctp_addr *addr2, struct sctp_sock *opt) { /* PF_INET only supports AF_INET addresses. */ if (addr1->sa.sa_family != addr2->sa.sa_family) return 0; |
e6f1cebf7 [NET] endianness ... |
907 908 |
if (htonl(INADDR_ANY) == addr1->v4.sin_addr.s_addr || htonl(INADDR_ANY) == addr2->v4.sin_addr.s_addr) |
1da177e4c Linux-2.6.12-rc2 |
909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 |
return 1; if (addr1->v4.sin_addr.s_addr == addr2->v4.sin_addr.s_addr) return 1; return 0; } /* Verify that provided sockaddr looks bindable. Common verification has * already been taken care of. */ static int sctp_inet_bind_verify(struct sctp_sock *opt, union sctp_addr *addr) { return sctp_v4_available(addr, opt); } /* Verify that sockaddr looks sendable. Common verification has already * been taken care of. */ static int sctp_inet_send_verify(struct sctp_sock *opt, union sctp_addr *addr) { return 1; } /* Fill in Supported Address Type information for INIT and INIT-ACK * chunks. Returns number of addresses supported. */ static int sctp_inet_supported_addrs(const struct sctp_sock *opt, |
3dbe86566 [SCTP]: Annotate ... |
936 |
__be16 *types) |
1da177e4c Linux-2.6.12-rc2 |
937 938 939 940 941 942 943 |
{ types[0] = SCTP_PARAM_IPV4_ADDRESS; return 1; } /* Wrapper routine that calls the ip transmit routine. */ static inline int sctp_v4_xmit(struct sk_buff *skb, |
f880374c2 sctp: Drop ipfarg... |
944 |
struct sctp_transport *transport) |
1da177e4c Linux-2.6.12-rc2 |
945 |
{ |
f880374c2 sctp: Drop ipfarg... |
946 |
struct inet_sock *inet = inet_sk(skb->sk); |
8a9c58d28 sctp: add support... |
947 |
__u8 dscp = inet->tos; |
f880374c2 sctp: Drop ipfarg... |
948 |
|
bb33381d0 net: sctp: rework... |
949 950 |
pr_debug("%s: skb:%p, len:%d, src:%pI4, dst:%pI4 ", __func__, skb, |
8a9c58d28 sctp: add support... |
951 952 953 954 955 |
skb->len, &transport->fl.u.ip4.saddr, &transport->fl.u.ip4.daddr); if (transport->dscp & SCTP_DSCP_SET_MASK) dscp = transport->dscp & SCTP_DSCP_VAL_MASK; |
1da177e4c Linux-2.6.12-rc2 |
956 |
|
f880374c2 sctp: Drop ipfarg... |
957 958 |
inet->pmtudisc = transport->param_flags & SPP_PMTUD_ENABLE ? IP_PMTUDISC_DO : IP_PMTUDISC_DONT; |
b01a24078 sctp: Make the mi... |
959 |
SCTP_INC_STATS(sock_net(&inet->sk), SCTP_MIB_OUTSCTPPACKS); |
bb33381d0 net: sctp: rework... |
960 |
|
8a9c58d28 sctp: add support... |
961 |
return __ip_queue_xmit(&inet->sk, skb, &transport->fl, dscp); |
1da177e4c Linux-2.6.12-rc2 |
962 |
} |
15efbe763 [SCTP]: Clean up ... |
963 |
static struct sctp_af sctp_af_inet; |
1da177e4c Linux-2.6.12-rc2 |
964 965 966 967 968 969 970 971 972 973 |
static struct sctp_pf sctp_pf_inet = { .event_msgname = sctp_inet_event_msgname, .skb_msgname = sctp_inet_skb_msgname, .af_supported = sctp_inet_af_supported, .cmp_addr = sctp_inet_cmp_addr, .bind_verify = sctp_inet_bind_verify, .send_verify = sctp_inet_send_verify, .supported_addrs = sctp_inet_supported_addrs, .create_accept_sk = sctp_v4_create_accept_sk, |
299ee123e sctp: Fixup v4map... |
974 975 976 |
.addr_to_user = sctp_v4_addr_to_user, .to_sk_saddr = sctp_v4_to_sk_saddr, .to_sk_daddr = sctp_v4_to_sk_daddr, |
b7e10c25b sctp: Add ip opti... |
977 |
.copy_ip_options = sctp_v4_copy_ip_options, |
15efbe763 [SCTP]: Clean up ... |
978 |
.af = &sctp_af_inet |
1da177e4c Linux-2.6.12-rc2 |
979 980 981 982 983 984 985 986 |
}; /* Notifier for inetaddr addition/deletion events. */ static struct notifier_block sctp_inetaddr_notifier = { .notifier_call = sctp_inetaddr_event, }; /* Socket operations. */ |
90ddc4f04 [NET]: move struc... |
987 |
static const struct proto_ops inet_seqpacket_ops = { |
543d9cfee [NET]: Identation... |
988 989 990 991 |
.family = PF_INET, .owner = THIS_MODULE, .release = inet_release, /* Needs to be wrapped... */ .bind = inet_bind, |
644fbdeac sctp: fix the iss... |
992 |
.connect = sctp_inet_connect, |
543d9cfee [NET]: Identation... |
993 994 995 |
.socketpair = sock_no_socketpair, .accept = inet_accept, .getname = inet_getname, /* Semantics are different. */ |
a11e1d432 Revert changes to... |
996 |
.poll = sctp_poll, |
543d9cfee [NET]: Identation... |
997 |
.ioctl = inet_ioctl, |
c7cbdbf29 net: rework SIOCG... |
998 |
.gettstamp = sock_gettstamp, |
543d9cfee [NET]: Identation... |
999 1000 1001 1002 1003 |
.listen = sctp_inet_listen, .shutdown = inet_shutdown, /* Looks harmless. */ .setsockopt = sock_common_setsockopt, /* IP_SOL IP_OPTION is a problem */ .getsockopt = sock_common_getsockopt, .sendmsg = inet_sendmsg, |
fd2d180a2 sctp: use inet_re... |
1004 |
.recvmsg = inet_recvmsg, |
543d9cfee [NET]: Identation... |
1005 1006 |
.mmap = sock_no_mmap, .sendpage = sock_no_sendpage, |
1da177e4c Linux-2.6.12-rc2 |
1007 1008 1009 1010 1011 1012 1013 1014 |
}; /* Registration with AF_INET family. */ static struct inet_protosw sctp_seqpacket_protosw = { .type = SOCK_SEQPACKET, .protocol = IPPROTO_SCTP, .prot = &sctp_prot, .ops = &inet_seqpacket_ops, |
1da177e4c Linux-2.6.12-rc2 |
1015 1016 1017 1018 1019 1020 1021 |
.flags = SCTP_PROTOSW_FLAG }; static struct inet_protosw sctp_stream_protosw = { .type = SOCK_STREAM, .protocol = IPPROTO_SCTP, .prot = &sctp_prot, .ops = &inet_seqpacket_ops, |
1da177e4c Linux-2.6.12-rc2 |
1022 1023 1024 1025 |
.flags = SCTP_PROTOSW_FLAG }; /* Register with IP layer. */ |
32613090a net: constify str... |
1026 |
static const struct net_protocol sctp_protocol = { |
1da177e4c Linux-2.6.12-rc2 |
1027 1028 1029 |
.handler = sctp_rcv, .err_handler = sctp_v4_err, .no_policy = 1, |
bb2db45b5 sctp: Enable sctp... |
1030 |
.netns_ok = 1, |
8ed1dc44d ipv4: introduce h... |
1031 |
.icmp_strict_tag_validation = 1, |
1da177e4c Linux-2.6.12-rc2 |
1032 1033 1034 |
}; /* IPv4 address related functions. */ |
15efbe763 [SCTP]: Clean up ... |
1035 |
static struct sctp_af sctp_af_inet = { |
543d9cfee [NET]: Identation... |
1036 1037 1038 1039 1040 1041 1042 1043 1044 |
.sa_family = AF_INET, .sctp_xmit = sctp_v4_xmit, .setsockopt = ip_setsockopt, .getsockopt = ip_getsockopt, .get_dst = sctp_v4_get_dst, .get_saddr = sctp_v4_get_saddr, .copy_addrlist = sctp_v4_copy_addrlist, .from_skb = sctp_v4_from_skb, .from_sk = sctp_v4_from_sk, |
543d9cfee [NET]: Identation... |
1045 1046 |
.from_addr_param = sctp_v4_from_addr_param, .to_addr_param = sctp_v4_to_addr_param, |
543d9cfee [NET]: Identation... |
1047 1048 1049 1050 1051 1052 1053 1054 1055 |
.cmp_addr = sctp_v4_cmp_addr, .addr_valid = sctp_v4_addr_valid, .inaddr_any = sctp_v4_inaddr_any, .is_any = sctp_v4_is_any, .available = sctp_v4_available, .scope = sctp_v4_scope, .skb_iif = sctp_v4_skb_iif, .is_ce = sctp_v4_is_ce, .seq_dump_addr = sctp_v4_seq_dump_addr, |
b9031d9d8 sctp: Fix ECN mar... |
1056 |
.ecn_capable = sctp_v4_ecn_capable, |
543d9cfee [NET]: Identation... |
1057 1058 |
.net_header_len = sizeof(struct iphdr), .sockaddr_len = sizeof(struct sockaddr_in), |
b7e10c25b sctp: Add ip opti... |
1059 |
.ip_options_len = sctp_v4_ip_options_len, |
1da177e4c Linux-2.6.12-rc2 |
1060 |
}; |
8d72651d8 sctp: fix checkpa... |
1061 1062 |
struct sctp_pf *sctp_get_pf_specific(sa_family_t family) { |
1da177e4c Linux-2.6.12-rc2 |
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 |
switch (family) { case PF_INET: return sctp_pf_inet_specific; case PF_INET6: return sctp_pf_inet6_specific; default: return NULL; } } /* Register the PF specific function table. */ int sctp_register_pf(struct sctp_pf *pf, sa_family_t family) { switch (family) { case PF_INET: if (sctp_pf_inet_specific) return 0; sctp_pf_inet_specific = pf; break; case PF_INET6: if (sctp_pf_inet6_specific) return 0; sctp_pf_inet6_specific = pf; break; default: return 0; } return 1; } |
b01a24078 sctp: Make the mi... |
1092 |
static inline int init_sctp_mibs(struct net *net) |
996b1dbad [SCTP]: Use snmp_... |
1093 |
{ |
698365fa1 net: clean up snm... |
1094 1095 1096 1097 |
net->sctp.sctp_statistics = alloc_percpu(struct sctp_mib); if (!net->sctp.sctp_statistics) return -ENOMEM; return 0; |
1da177e4c Linux-2.6.12-rc2 |
1098 |
} |
b01a24078 sctp: Make the mi... |
1099 |
static inline void cleanup_sctp_mibs(struct net *net) |
1da177e4c Linux-2.6.12-rc2 |
1100 |
{ |
698365fa1 net: clean up snm... |
1101 |
free_percpu(net->sctp.sctp_statistics); |
1da177e4c Linux-2.6.12-rc2 |
1102 |
} |
270637abf [SCTP]: Fix a rac... |
1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 |
static void sctp_v4_pf_init(void) { /* Initialize the SCTP specific PF functions. */ sctp_register_pf(&sctp_pf_inet, PF_INET); sctp_register_af(&sctp_af_inet); } static void sctp_v4_pf_exit(void) { list_del(&sctp_af_inet.list); } static int sctp_v4_protosw_init(void) { int rc; rc = proto_register(&sctp_prot, 1); if (rc) return rc; /* Register SCTP(UDP and TCP style) with socket layer. */ inet_register_protosw(&sctp_seqpacket_protosw); inet_register_protosw(&sctp_stream_protosw); return 0; } static void sctp_v4_protosw_exit(void) { inet_unregister_protosw(&sctp_stream_protosw); inet_unregister_protosw(&sctp_seqpacket_protosw); proto_unregister(&sctp_prot); } static int sctp_v4_add_protocol(void) { /* Register notifier for inet address additions/deletions. */ register_inetaddr_notifier(&sctp_inetaddr_notifier); /* Register SCTP with inet layer. */ if (inet_add_protocol(&sctp_protocol, IPPROTO_SCTP) < 0) return -EAGAIN; return 0; } static void sctp_v4_del_protocol(void) { inet_del_protocol(&sctp_protocol, IPPROTO_SCTP); unregister_inetaddr_notifier(&sctp_inetaddr_notifier); } |
8e2d61e0a sctp: fix race on... |
1154 |
static int __net_init sctp_defaults_init(struct net *net) |
4db67e808 sctp: Make the ad... |
1155 |
{ |
2ce955035 sctp: Make the ct... |
1156 |
int status; |
e1fc3b14f sctp: Make sysctl... |
1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 |
/* * 14. Suggested SCTP Protocol Parameter Values */ /* The following protocol parameters are RECOMMENDED: */ /* RTO.Initial - 3 seconds */ net->sctp.rto_initial = SCTP_RTO_INITIAL; /* RTO.Min - 1 second */ net->sctp.rto_min = SCTP_RTO_MIN; /* RTO.Max - 60 seconds */ net->sctp.rto_max = SCTP_RTO_MAX; /* RTO.Alpha - 1/8 */ net->sctp.rto_alpha = SCTP_RTO_ALPHA; /* RTO.Beta - 1/4 */ net->sctp.rto_beta = SCTP_RTO_BETA; /* Valid.Cookie.Life - 60 seconds */ net->sctp.valid_cookie_life = SCTP_DEFAULT_COOKIE_LIFE; /* Whether Cookie Preservative is enabled(1) or not(0) */ net->sctp.cookie_preserve_enable = 1; |
3c68198e7 sctp: Make hmac a... |
1177 |
/* Default sctp sockets to use md5 as their hmac alg */ |
0d0863b02 sctp: Change defa... |
1178 |
#if defined (CONFIG_SCTP_DEFAULT_COOKIE_HMAC_MD5) |
3c68198e7 sctp: Make hmac a... |
1179 |
net->sctp.sctp_hmac_alg = "md5"; |
0d0863b02 sctp: Change defa... |
1180 |
#elif defined (CONFIG_SCTP_DEFAULT_COOKIE_HMAC_SHA1) |
3c68198e7 sctp: Make hmac a... |
1181 1182 1183 1184 |
net->sctp.sctp_hmac_alg = "sha1"; #else net->sctp.sctp_hmac_alg = NULL; #endif |
e1fc3b14f sctp: Make sysctl... |
1185 1186 |
/* Max.Burst - 4 */ net->sctp.max_burst = SCTP_DEFAULT_MAX_BURST; |
34515e94c sctp: add support... |
1187 1188 |
/* Disable of Primary Path Switchover by default */ net->sctp.ps_retrans = SCTP_PS_RETRANS_MAX; |
566178f85 net: sctp: dynami... |
1189 1190 |
/* Enable pf state by default */ net->sctp.pf_enable = 1; |
aef587be4 sctp: add pf_expo... |
1191 1192 |
/* Ignore pf exposure feature by default */ net->sctp.pf_expose = SCTP_PF_EXPOSE_UNSET; |
e1fc3b14f sctp: Make sysctl... |
1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 |
/* Association.Max.Retrans - 10 attempts * Path.Max.Retrans - 5 attempts (per destination address) * Max.Init.Retransmits - 8 attempts */ net->sctp.max_retrans_association = 10; net->sctp.max_retrans_path = 5; net->sctp.max_retrans_init = 8; /* Sendbuffer growth - do per-socket accounting */ net->sctp.sndbuf_policy = 0; /* Rcvbuffer growth - do per-socket accounting */ net->sctp.rcvbuf_policy = 0; /* HB.interval - 30 seconds */ net->sctp.hb_interval = SCTP_DEFAULT_TIMEOUT_HEARTBEAT; /* delayed SACK timeout */ net->sctp.sack_timeout = SCTP_DEFAULT_TIMEOUT_SACK; /* Disable ADDIP by default. */ net->sctp.addip_enable = 0; net->sctp.addip_noauth = 0; net->sctp.default_auto_asconf = 0; /* Enable PR-SCTP by default. */ net->sctp.prsctp_enable = 1; |
c28445c3c sctp: add reconf_... |
1220 1221 |
/* Disable RECONF by default. */ net->sctp.reconf_enable = 0; |
e1fc3b14f sctp: Make sysctl... |
1222 1223 |
/* Disable AUTH by default. */ net->sctp.auth_enable = 0; |
1b0b8114b sctp: make ecn fl... |
1224 1225 |
/* Enable ECN by default. */ net->sctp.ecn_enable = 1; |
e1fc3b14f sctp: Make sysctl... |
1226 1227 1228 1229 1230 1231 1232 1233 |
/* Set SCOPE policy to enabled */ net->sctp.scope_policy = SCTP_SCOPE_POLICY_ENABLE; /* Set the default rwnd update threshold */ net->sctp.rwnd_upd_shift = SCTP_DEFAULT_RWND_SHIFT; /* Initialize maximum autoclose timeout. */ net->sctp.max_autoclose = INT_MAX / HZ; |
ebb7e95d9 sctp: Add infrast... |
1234 1235 1236 |
status = sctp_sysctl_net_register(net); if (status) goto err_sysctl_register; |
b01a24078 sctp: Make the mi... |
1237 1238 1239 1240 |
/* Allocate and initialise sctp mibs. */ status = init_sctp_mibs(net); if (status) goto err_init_mibs; |
d47d08c8c sctp: use proc_re... |
1241 |
#ifdef CONFIG_PROC_FS |
13d782f6b sctp: Make the pr... |
1242 1243 1244 1245 |
/* Initialize proc fs directory. */ status = sctp_proc_init(net); if (status) goto err_init_proc; |
d47d08c8c sctp: use proc_re... |
1246 |
#endif |
13d782f6b sctp: Make the pr... |
1247 1248 |
sctp_dbg_objcnt_init(net); |
4db67e808 sctp: Make the ad... |
1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 |
/* Initialize the local address list. */ INIT_LIST_HEAD(&net->sctp.local_addr_list); spin_lock_init(&net->sctp.local_addr_lock); sctp_get_local_addr_list(net); /* Initialize the address event list */ INIT_LIST_HEAD(&net->sctp.addr_waitq); INIT_LIST_HEAD(&net->sctp.auto_asconf_splist); spin_lock_init(&net->sctp.addr_wq_lock); net->sctp.addr_wq_timer.expires = 0; |
9c3b57518 net: sctp: Conver... |
1259 |
timer_setup(&net->sctp.addr_wq_timer, sctp_addr_wq_timeout_handler, 0); |
4db67e808 sctp: Make the ad... |
1260 1261 |
return 0; |
2ce955035 sctp: Make the ct... |
1262 |
|
7ae665f13 sctp: fix unused ... |
1263 |
#ifdef CONFIG_PROC_FS |
13d782f6b sctp: Make the pr... |
1264 |
err_init_proc: |
b01a24078 sctp: Make the mi... |
1265 |
cleanup_sctp_mibs(net); |
7ae665f13 sctp: fix unused ... |
1266 |
#endif |
b01a24078 sctp: Make the mi... |
1267 |
err_init_mibs: |
ebb7e95d9 sctp: Add infrast... |
1268 1269 |
sctp_sysctl_net_unregister(net); err_sysctl_register: |
2ce955035 sctp: Make the ct... |
1270 |
return status; |
4db67e808 sctp: Make the ad... |
1271 |
} |
8e2d61e0a sctp: fix race on... |
1272 |
static void __net_exit sctp_defaults_exit(struct net *net) |
4db67e808 sctp: Make the ad... |
1273 1274 1275 1276 |
{ /* Free the local address list */ sctp_free_addr_wq(net); sctp_free_local_addr_list(net); |
2ce955035 sctp: Make the ct... |
1277 |
|
d47d08c8c sctp: use proc_re... |
1278 1279 1280 1281 |
#ifdef CONFIG_PROC_FS remove_proc_subtree("sctp", net->proc_net); net->sctp.proc_net_sctp = NULL; #endif |
b01a24078 sctp: Make the mi... |
1282 |
cleanup_sctp_mibs(net); |
ebb7e95d9 sctp: Add infrast... |
1283 |
sctp_sysctl_net_unregister(net); |
4db67e808 sctp: Make the ad... |
1284 |
} |
8e2d61e0a sctp: fix race on... |
1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 |
static struct pernet_operations sctp_defaults_ops = { .init = sctp_defaults_init, .exit = sctp_defaults_exit, }; static int __net_init sctp_ctrlsock_init(struct net *net) { int status; /* Initialize the control inode/socket for handling OOTB packets. */ status = sctp_ctl_sock_init(net); if (status) pr_err("Failed to initialize the SCTP control sock "); return status; } |
b456d7241 sctp: Fix the lin... |
1302 |
static void __net_exit sctp_ctrlsock_exit(struct net *net) |
8e2d61e0a sctp: fix race on... |
1303 1304 1305 1306 1307 1308 1309 1310 |
{ /* Free the control endpoint. */ inet_ctl_sock_destroy(net->sctp.ctl_sock); } static struct pernet_operations sctp_ctrlsock_ops = { .init = sctp_ctrlsock_init, .exit = sctp_ctrlsock_exit, |
4db67e808 sctp: Make the ad... |
1311 |
}; |
1da177e4c Linux-2.6.12-rc2 |
1312 |
/* Initialize the universe into something sensible. */ |
dda919285 net: sctp: remove... |
1313 |
static __init int sctp_init(void) |
1da177e4c Linux-2.6.12-rc2 |
1314 |
{ |
ca79b0c21 mm: convert total... |
1315 |
unsigned long nr_pages = totalram_pages(); |
623b57bec sctp: remove redu... |
1316 1317 1318 1319 |
unsigned long limit; unsigned long goal; int max_entry_order; int num_entries; |
4d93df0ab [SCTP]: Rewrite o... |
1320 |
int max_share; |
623b57bec sctp: remove redu... |
1321 |
int status; |
1da177e4c Linux-2.6.12-rc2 |
1322 |
int order; |
623b57bec sctp: remove redu... |
1323 |
int i; |
1da177e4c Linux-2.6.12-rc2 |
1324 |
|
b4772ef87 net: use common m... |
1325 |
sock_skb_cb_check_size(sizeof(struct sctp_ulpevent)); |
1da177e4c Linux-2.6.12-rc2 |
1326 |
|
827bf1223 [SCTP]: Re-order ... |
1327 |
/* Allocate bind_bucket and chunk caches. */ |
1da177e4c Linux-2.6.12-rc2 |
1328 1329 1330 1331 |
status = -ENOBUFS; sctp_bucket_cachep = kmem_cache_create("sctp_bind_bucket", sizeof(struct sctp_bind_bucket), 0, SLAB_HWCACHE_ALIGN, |
20c2df83d mm: Remove slab d... |
1332 |
NULL); |
1da177e4c Linux-2.6.12-rc2 |
1333 |
if (!sctp_bucket_cachep) |
827bf1223 [SCTP]: Re-order ... |
1334 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1335 1336 1337 1338 |
sctp_chunk_cachep = kmem_cache_create("sctp_chunk", sizeof(struct sctp_chunk), 0, SLAB_HWCACHE_ALIGN, |
20c2df83d mm: Remove slab d... |
1339 |
NULL); |
1da177e4c Linux-2.6.12-rc2 |
1340 1341 |
if (!sctp_chunk_cachep) goto err_chunk_cachep; |
908c7f194 percpu_counter: a... |
1342 |
status = percpu_counter_init(&sctp_sockets_allocated, 0, GFP_KERNEL); |
632c928a6 sctp: Move the pe... |
1343 1344 |
if (status) goto err_percpu_counter_init; |
1da177e4c Linux-2.6.12-rc2 |
1345 1346 1347 1348 1349 1350 1351 1352 |
/* Implementation specific variables. */ /* Initialize default stream count setup information. */ sctp_max_instreams = SCTP_DEFAULT_INSTREAMS; sctp_max_outstreams = SCTP_DEFAULT_OUTSTREAMS; /* Initialize handle used for association ids. */ idr_init(&sctp_assocs_id); |
f03d78db6 net: refine {udp|... |
1353 |
limit = nr_free_buffer_pages() / 8; |
4d93df0ab [SCTP]: Rewrite o... |
1354 1355 1356 1357 1358 1359 1360 1361 |
limit = max(limit, 128UL); sysctl_sctp_mem[0] = limit / 4 * 3; sysctl_sctp_mem[1] = limit; sysctl_sctp_mem[2] = sysctl_sctp_mem[0] * 2; /* Set per-socket limits to no more than 1/128 the pressure threshold*/ limit = (sysctl_sctp_mem[1]) << (PAGE_SHIFT - 7); max_share = min(4UL*1024*1024, limit); |
845525a64 sctp: Update sctp... |
1362 |
sysctl_sctp_rmem[0] = SK_MEM_QUANTUM; /* give each asoc 1 page min */ |
87fb4b7b5 net: more accurat... |
1363 |
sysctl_sctp_rmem[1] = 1500 * SKB_TRUESIZE(1); |
4d93df0ab [SCTP]: Rewrite o... |
1364 |
sysctl_sctp_rmem[2] = max(sysctl_sctp_rmem[1], max_share); |
3ab224be6 [NET] CORE: Intro... |
1365 |
sysctl_sctp_wmem[0] = SK_MEM_QUANTUM; |
4d93df0ab [SCTP]: Rewrite o... |
1366 1367 |
sysctl_sctp_wmem[1] = 16*1024; sysctl_sctp_wmem[2] = max(64*1024, max_share); |
1da177e4c Linux-2.6.12-rc2 |
1368 1369 |
/* Size and allocate the association hash table. * The methodology is similar to that of the tcp hash tables. |
d9749fb59 sctp: Fix port ha... |
1370 |
* Though not identical. Start by getting a goal size |
1da177e4c Linux-2.6.12-rc2 |
1371 |
*/ |
3d6357de8 mm: reference tot... |
1372 1373 |
if (nr_pages >= (128 * 1024)) goal = nr_pages >> (22 - PAGE_SHIFT); |
1da177e4c Linux-2.6.12-rc2 |
1374 |
else |
3d6357de8 mm: reference tot... |
1375 |
goal = nr_pages >> (24 - PAGE_SHIFT); |
1da177e4c Linux-2.6.12-rc2 |
1376 |
|
d9749fb59 sctp: Fix port ha... |
1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 |
/* Then compute the page order for said goal */ order = get_order(goal); /* Now compute the required page order for the maximum sized table we * want to create */ max_entry_order = get_order(MAX_SCTP_PORT_HASH_ENTRIES * sizeof(struct sctp_bind_hashbucket)); /* Limit the page order by that maximum hash table size */ order = min(order, max_entry_order); |
1da177e4c Linux-2.6.12-rc2 |
1388 |
|
1da177e4c Linux-2.6.12-rc2 |
1389 1390 |
/* Allocate and initialize the endpoint hash table. */ sctp_ep_hashsize = 64; |
3b77d6617 net: sctp: remove... |
1391 |
sctp_ep_hashtable = |
6da2ec560 treewide: kmalloc... |
1392 |
kmalloc_array(64, sizeof(struct sctp_hashbucket), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
1393 |
if (!sctp_ep_hashtable) { |
145ce502e net/sctp: Use pr_... |
1394 1395 |
pr_err("Failed endpoint_hash alloc "); |
1da177e4c Linux-2.6.12-rc2 |
1396 1397 1398 1399 1400 |
status = -ENOMEM; goto err_ehash_alloc; } for (i = 0; i < sctp_ep_hashsize; i++) { rwlock_init(&sctp_ep_hashtable[i].lock); |
d970dbf84 SCTP: Convert cus... |
1401 |
INIT_HLIST_HEAD(&sctp_ep_hashtable[i].chain); |
1da177e4c Linux-2.6.12-rc2 |
1402 |
} |
d9749fb59 sctp: Fix port ha... |
1403 1404 1405 1406 1407 |
/* Allocate and initialize the SCTP port hash table. * Note that order is initalized to start at the max sized * table we want to support. If we can't get that many pages * reduce the order and try again */ |
1da177e4c Linux-2.6.12-rc2 |
1408 |
do { |
1da177e4c Linux-2.6.12-rc2 |
1409 |
sctp_port_hashtable = (struct sctp_bind_hashbucket *) |
6857a02af sctp: use GFP_KER... |
1410 |
__get_free_pages(GFP_KERNEL | __GFP_NOWARN, order); |
1da177e4c Linux-2.6.12-rc2 |
1411 |
} while (!sctp_port_hashtable && --order > 0); |
d9749fb59 sctp: Fix port ha... |
1412 |
|
1da177e4c Linux-2.6.12-rc2 |
1413 |
if (!sctp_port_hashtable) { |
145ce502e net/sctp: Use pr_... |
1414 1415 |
pr_err("Failed bind hash alloc "); |
1da177e4c Linux-2.6.12-rc2 |
1416 1417 1418 |
status = -ENOMEM; goto err_bhash_alloc; } |
d9749fb59 sctp: Fix port ha... |
1419 1420 1421 1422 1423 1424 |
/* Now compute the number of entries that will fit in the * port hash space we allocated */ num_entries = (1UL << order) * PAGE_SIZE / sizeof(struct sctp_bind_hashbucket); |
93c3216a7 net: sctp: protoc... |
1425 1426 |
/* And finish by rounding it down to the nearest power of two. * This wastes some memory of course, but it's needed because |
d9749fb59 sctp: Fix port ha... |
1427 |
* the hash function operates based on the assumption that |
93c3216a7 net: sctp: protoc... |
1428 |
* the number of entries is a power of two. |
d9749fb59 sctp: Fix port ha... |
1429 1430 |
*/ sctp_port_hashsize = rounddown_pow_of_two(num_entries); |
1da177e4c Linux-2.6.12-rc2 |
1431 1432 |
for (i = 0; i < sctp_port_hashsize; i++) { spin_lock_init(&sctp_port_hashtable[i].lock); |
d970dbf84 SCTP: Convert cus... |
1433 |
INIT_HLIST_HEAD(&sctp_port_hashtable[i].chain); |
1da177e4c Linux-2.6.12-rc2 |
1434 |
} |
a5e27d18f sctp: fix error r... |
1435 1436 |
status = sctp_transport_hashtable_init(); if (status) |
4f0087812 sctp: apply rhash... |
1437 |
goto err_thash_alloc; |
d9749fb59 sctp: Fix port ha... |
1438 1439 1440 |
pr_info("Hash tables configured (bind %d/%d) ", sctp_port_hashsize, num_entries); |
1da177e4c Linux-2.6.12-rc2 |
1441 |
|
1da177e4c Linux-2.6.12-rc2 |
1442 1443 1444 |
sctp_sysctl_register(); INIT_LIST_HEAD(&sctp_address_families); |
270637abf [SCTP]: Fix a rac... |
1445 1446 |
sctp_v4_pf_init(); sctp_v6_pf_init(); |
1ba896f6f sctp: remove exte... |
1447 |
sctp_sched_ops_init(); |
1da177e4c Linux-2.6.12-rc2 |
1448 |
|
8e2d61e0a sctp: fix race on... |
1449 1450 1451 |
status = register_pernet_subsys(&sctp_defaults_ops); if (status) goto err_register_defaults; |
827bf1223 [SCTP]: Re-order ... |
1452 |
|
8e2d61e0a sctp: fix race on... |
1453 |
status = sctp_v4_protosw_init(); |
1da177e4c Linux-2.6.12-rc2 |
1454 |
if (status) |
270637abf [SCTP]: Fix a rac... |
1455 1456 1457 1458 1459 |
goto err_protosw_init; status = sctp_v6_protosw_init(); if (status) goto err_v6_protosw_init; |
1da177e4c Linux-2.6.12-rc2 |
1460 |
|
8e2d61e0a sctp: fix race on... |
1461 |
status = register_pernet_subsys(&sctp_ctrlsock_ops); |
4db67e808 sctp: Make the ad... |
1462 |
if (status) |
8e2d61e0a sctp: fix race on... |
1463 |
goto err_register_ctrlsock; |
4db67e808 sctp: Make the ad... |
1464 |
|
270637abf [SCTP]: Fix a rac... |
1465 1466 |
status = sctp_v4_add_protocol(); if (status) |
827bf1223 [SCTP]: Re-order ... |
1467 |
goto err_add_protocol; |
827bf1223 [SCTP]: Re-order ... |
1468 1469 1470 1471 1472 |
/* Register SCTP with inet6 layer. */ status = sctp_v6_add_protocol(); if (status) goto err_v6_add_protocol; |
90017accf sctp: Add GSO sup... |
1473 1474 1475 |
if (sctp_offload_init() < 0) pr_crit("%s: Cannot add SCTP protocol offload ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
1476 1477 |
out: return status; |
827bf1223 [SCTP]: Re-order ... |
1478 |
err_v6_add_protocol: |
270637abf [SCTP]: Fix a rac... |
1479 |
sctp_v4_del_protocol(); |
d1dd52478 sctp: fix crash d... |
1480 |
err_add_protocol: |
8e2d61e0a sctp: fix race on... |
1481 1482 |
unregister_pernet_subsys(&sctp_ctrlsock_ops); err_register_ctrlsock: |
270637abf [SCTP]: Fix a rac... |
1483 1484 1485 1486 |
sctp_v6_protosw_exit(); err_v6_protosw_init: sctp_v4_protosw_exit(); err_protosw_init: |
8e2d61e0a sctp: fix race on... |
1487 1488 |
unregister_pernet_subsys(&sctp_defaults_ops); err_register_defaults: |
270637abf [SCTP]: Fix a rac... |
1489 1490 |
sctp_v4_pf_exit(); sctp_v6_pf_exit(); |
1da177e4c Linux-2.6.12-rc2 |
1491 |
sctp_sysctl_unregister(); |
1da177e4c Linux-2.6.12-rc2 |
1492 1493 1494 1495 |
free_pages((unsigned long)sctp_port_hashtable, get_order(sctp_port_hashsize * sizeof(struct sctp_bind_hashbucket))); err_bhash_alloc: |
4f0087812 sctp: apply rhash... |
1496 1497 |
sctp_transport_hashtable_destroy(); err_thash_alloc: |
1da177e4c Linux-2.6.12-rc2 |
1498 1499 |
kfree(sctp_ep_hashtable); err_ehash_alloc: |
632c928a6 sctp: Move the pe... |
1500 1501 |
percpu_counter_destroy(&sctp_sockets_allocated); err_percpu_counter_init: |
1da177e4c Linux-2.6.12-rc2 |
1502 1503 1504 |
kmem_cache_destroy(sctp_chunk_cachep); err_chunk_cachep: kmem_cache_destroy(sctp_bucket_cachep); |
1da177e4c Linux-2.6.12-rc2 |
1505 1506 1507 1508 |
goto out; } /* Exit handler for the SCTP protocol. */ |
dda919285 net: sctp: remove... |
1509 |
static __exit void sctp_exit(void) |
1da177e4c Linux-2.6.12-rc2 |
1510 1511 1512 1513 |
{ /* BUG. This should probably do something useful like clean * up all the remaining associations and all that memory. */ |
827bf1223 [SCTP]: Re-order ... |
1514 1515 |
/* Unregister with inet6/inet layers. */ sctp_v6_del_protocol(); |
270637abf [SCTP]: Fix a rac... |
1516 |
sctp_v4_del_protocol(); |
1da177e4c Linux-2.6.12-rc2 |
1517 |
|
8e2d61e0a sctp: fix race on... |
1518 |
unregister_pernet_subsys(&sctp_ctrlsock_ops); |
4db67e808 sctp: Make the ad... |
1519 |
|
270637abf [SCTP]: Fix a rac... |
1520 1521 1522 |
/* Free protosw registrations */ sctp_v6_protosw_exit(); sctp_v4_protosw_exit(); |
8e2d61e0a sctp: fix race on... |
1523 |
unregister_pernet_subsys(&sctp_defaults_ops); |
827bf1223 [SCTP]: Re-order ... |
1524 |
/* Unregister with socket layer. */ |
270637abf [SCTP]: Fix a rac... |
1525 1526 |
sctp_v6_pf_exit(); sctp_v4_pf_exit(); |
827bf1223 [SCTP]: Re-order ... |
1527 |
|
1da177e4c Linux-2.6.12-rc2 |
1528 |
sctp_sysctl_unregister(); |
1da177e4c Linux-2.6.12-rc2 |
1529 |
|
1da177e4c Linux-2.6.12-rc2 |
1530 1531 1532 |
free_pages((unsigned long)sctp_port_hashtable, get_order(sctp_port_hashsize * sizeof(struct sctp_bind_hashbucket))); |
b5eff7128 sctp: drop the ol... |
1533 |
kfree(sctp_ep_hashtable); |
4f0087812 sctp: apply rhash... |
1534 |
sctp_transport_hashtable_destroy(); |
1da177e4c Linux-2.6.12-rc2 |
1535 |
|
632c928a6 sctp: Move the pe... |
1536 |
percpu_counter_destroy(&sctp_sockets_allocated); |
1da177e4c Linux-2.6.12-rc2 |
1537 |
|
eaa184a1a sctp: protocol.c ... |
1538 |
rcu_barrier(); /* Wait for completion of call_rcu()'s */ |
827bf1223 [SCTP]: Re-order ... |
1539 1540 |
kmem_cache_destroy(sctp_chunk_cachep); kmem_cache_destroy(sctp_bucket_cachep); |
1da177e4c Linux-2.6.12-rc2 |
1541 1542 1543 1544 |
} module_init(sctp_init); module_exit(sctp_exit); |
bb97d31f5 [INET]: Make inet... |
1545 1546 1547 1548 |
/* * __stringify doesn't likes enums, so use IPPROTO_SCTP value (132) directly. */ MODULE_ALIAS("net-pf-" __stringify(PF_INET) "-proto-132"); |
882a382c3 [SCTP]: Enable au... |
1549 |
MODULE_ALIAS("net-pf-" __stringify(PF_INET6) "-proto-132"); |
91705c61b net: sctp: trivia... |
1550 |
MODULE_AUTHOR("Linux Kernel SCTP developers <linux-sctp@vger.kernel.org>"); |
1da177e4c Linux-2.6.12-rc2 |
1551 |
MODULE_DESCRIPTION("Support for the SCTP protocol (RFC2960)"); |
71acc0ddd Revert "net: sctp... |
1552 1553 |
module_param_named(no_checksums, sctp_checksum_disable, bool, 0644); MODULE_PARM_DESC(no_checksums, "Disable checksums computing and verification"); |
1da177e4c Linux-2.6.12-rc2 |
1554 |
MODULE_LICENSE("GPL"); |