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net/llc/af_llc.c
30.8 KB
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/* * af_llc.c - LLC User Interface SAPs * Description: * Functions in this module are implementation of socket based llc * communications for the Linux operating system. Support of llc class * one and class two is provided via SOCK_DGRAM and SOCK_STREAM * respectively. * * An llc2 connection is (mac + sap), only one llc2 sap connection * is allowed per mac. Though one sap may have multiple mac + sap * connections. * * Copyright (c) 2001 by Jay Schulist <jschlst@samba.org> * 2002-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> * * This program can be redistributed or modified under the terms of the * GNU General Public License as published by the Free Software Foundation. * This program is distributed without any warranty or implied warranty * of merchantability or fitness for a particular purpose. * * See the GNU General Public License for more details. */ |
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#include <linux/compiler.h> |
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#include <linux/kernel.h> #include <linux/module.h> |
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#include <linux/rtnetlink.h> #include <linux/init.h> |
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#include <linux/slab.h> |
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#include <net/llc.h> #include <net/llc_sap.h> #include <net/llc_pdu.h> #include <net/llc_conn.h> |
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#include <net/tcp_states.h> |
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/* remember: uninitialized global data is zeroed because its in .bss */ static u16 llc_ui_sap_last_autoport = LLC_SAP_DYN_START; static u16 llc_ui_sap_link_no_max[256]; static struct sockaddr_llc llc_ui_addrnull; |
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static const struct proto_ops llc_ui_ops; |
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|
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static int llc_ui_wait_for_conn(struct sock *sk, long timeout); static int llc_ui_wait_for_disc(struct sock *sk, long timeout); |
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static int llc_ui_wait_for_busy_core(struct sock *sk, long timeout); |
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#if 0 #define dprintk(args...) printk(KERN_DEBUG args) #else #define dprintk(args...) #endif |
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/* Maybe we'll add some more in the future. */ #define LLC_CMSG_PKTINFO 1 |
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/** * llc_ui_next_link_no - return the next unused link number for a sap * @sap: Address of sap to get link number from. * * Return the next unused link number for a given sap. */ |
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static inline u16 llc_ui_next_link_no(int sap) |
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{ return llc_ui_sap_link_no_max[sap]++; } /** * llc_proto_type - return eth protocol for ARP header type * @arphrd: ARP header type. * * Given an ARP header type return the corresponding ethernet protocol. */ |
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static inline __be16 llc_proto_type(u16 arphrd) |
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{ return arphrd == ARPHRD_IEEE802_TR ? |
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htons(ETH_P_TR_802_2) : htons(ETH_P_802_2); |
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} /** * llc_ui_addr_null - determines if a address structure is null * @addr: Address to test if null. */ |
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static inline u8 llc_ui_addr_null(struct sockaddr_llc *addr) |
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{ return !memcmp(addr, &llc_ui_addrnull, sizeof(*addr)); } /** * llc_ui_header_len - return length of llc header based on operation * @sk: Socket which contains a valid llc socket type. * @addr: Complete sockaddr_llc structure received from the user. * * Provide the length of the llc header depending on what kind of * operation the user would like to perform and the type of socket. * Returns the correct llc header length. */ |
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static inline u8 llc_ui_header_len(struct sock *sk, struct sockaddr_llc *addr) |
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{ u8 rc = LLC_PDU_LEN_U; if (addr->sllc_test || addr->sllc_xid) rc = LLC_PDU_LEN_U; else if (sk->sk_type == SOCK_STREAM) rc = LLC_PDU_LEN_I; return rc; } /** * llc_ui_send_data - send data via reliable llc2 connection * @sk: Connection the socket is using. * @skb: Data the user wishes to send. |
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* @noblock: can we block waiting for data? * * Send data via reliable llc2 connection. * Returns 0 upon success, non-zero if action did not succeed. */ static int llc_ui_send_data(struct sock* sk, struct sk_buff *skb, int noblock) { struct llc_sock* llc = llc_sk(sk); int rc = 0; |
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if (unlikely(llc_data_accept_state(llc->state) || |
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llc->remote_busy_flag || llc->p_flag)) { |
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long timeout = sock_sndtimeo(sk, noblock); |
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rc = llc_ui_wait_for_busy_core(sk, timeout); } |
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if (unlikely(!rc)) |
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rc = llc_build_and_send_pkt(sk, skb); return rc; } static void llc_ui_sk_init(struct socket *sock, struct sock *sk) { |
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sock_graft(sk, sock); |
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sk->sk_type = sock->type; |
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sock->ops = &llc_ui_ops; } static struct proto llc_proto = { |
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.name = "LLC", |
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.owner = THIS_MODULE, .obj_size = sizeof(struct llc_sock), |
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.slab_flags = SLAB_DESTROY_BY_RCU, |
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}; /** * llc_ui_create - alloc and init a new llc_ui socket |
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* @net: network namespace (must be default network) |
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* @sock: Socket to initialize and attach allocated sk to. * @protocol: Unused. |
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* @kern: on behalf of kernel or userspace |
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* * Allocate and initialize a new llc_ui socket, validate the user wants a * socket type we have available. * Returns 0 upon success, negative upon failure. */ |
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static int llc_ui_create(struct net *net, struct socket *sock, int protocol, int kern) |
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{ struct sock *sk; int rc = -ESOCKTNOSUPPORT; |
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if (!capable(CAP_NET_RAW)) return -EPERM; |
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if (!net_eq(net, &init_net)) |
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return -EAFNOSUPPORT; |
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if (likely(sock->type == SOCK_DGRAM || sock->type == SOCK_STREAM)) { |
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rc = -ENOMEM; |
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sk = llc_sk_alloc(net, PF_LLC, GFP_KERNEL, &llc_proto); |
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if (sk) { rc = 0; llc_ui_sk_init(sock, sk); } } return rc; } /** * llc_ui_release - shutdown socket * @sock: Socket to release. * * Shutdown and deallocate an existing socket. */ static int llc_ui_release(struct socket *sock) { struct sock *sk = sock->sk; struct llc_sock *llc; |
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if (unlikely(sk == NULL)) |
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goto out; sock_hold(sk); lock_sock(sk); llc = llc_sk(sk); |
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dprintk("%s: closing local(%02X) remote(%02X) ", __func__, |
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llc->laddr.lsap, llc->daddr.lsap); if (!llc_send_disc(sk)) llc_ui_wait_for_disc(sk, sk->sk_rcvtimeo); |
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if (!sock_flag(sk, SOCK_ZAPPED)) |
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llc_sap_remove_socket(llc->sap, sk); release_sock(sk); |
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if (llc->dev) dev_put(llc->dev); sock_put(sk); llc_sk_free(sk); out: return 0; } /** * llc_ui_autoport - provide dynamically allocate SAP number * * Provide the caller with a dynamically allocated SAP number according * to the rules that are set in this function. Returns: 0, upon failure, * SAP number otherwise. */ static int llc_ui_autoport(void) { struct llc_sap *sap; int i, tries = 0; while (tries < LLC_SAP_DYN_TRIES) { for (i = llc_ui_sap_last_autoport; i < LLC_SAP_DYN_STOP; i += 2) { sap = llc_sap_find(i); if (!sap) { llc_ui_sap_last_autoport = i + 2; goto out; } |
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llc_sap_put(sap); |
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} llc_ui_sap_last_autoport = LLC_SAP_DYN_START; tries++; } i = 0; out: return i; } /** |
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* llc_ui_autobind - automatically bind a socket to a sap * @sock: socket to bind * @addr: address to connect to * * Used by llc_ui_connect and llc_ui_sendmsg when the user hasn't * specifically used llc_ui_bind to bind to an specific address/sap |
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* |
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* Returns: 0 upon success, negative otherwise. */ static int llc_ui_autobind(struct socket *sock, struct sockaddr_llc *addr) { struct sock *sk = sock->sk; struct llc_sock *llc = llc_sk(sk); struct llc_sap *sap; int rc = -EINVAL; if (!sock_flag(sk, SOCK_ZAPPED)) goto out; rc = -ENODEV; |
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if (sk->sk_bound_dev_if) { llc->dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if); if (llc->dev && addr->sllc_arphrd != llc->dev->type) { dev_put(llc->dev); llc->dev = NULL; } } else llc->dev = dev_getfirstbyhwtype(&init_net, addr->sllc_arphrd); |
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if (!llc->dev) goto out; rc = -EUSERS; llc->laddr.lsap = llc_ui_autoport(); if (!llc->laddr.lsap) goto out; rc = -EBUSY; /* some other network layer is using the sap */ sap = llc_sap_open(llc->laddr.lsap, NULL); if (!sap) goto out; memcpy(llc->laddr.mac, llc->dev->dev_addr, IFHWADDRLEN); memcpy(&llc->addr, addr, sizeof(llc->addr)); /* assign new connection to its SAP */ llc_sap_add_socket(sap, sk); sock_reset_flag(sk, SOCK_ZAPPED); rc = 0; out: return rc; } /** * llc_ui_bind - bind a socket to a specific address. * @sock: Socket to bind an address to. * @uaddr: Address the user wants the socket bound to. * @addrlen: Length of the uaddr structure. * * Bind a socket to a specific address. For llc a user is able to bind to |
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* a specific sap only or mac + sap. |
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* If the user desires to bind to a specific mac + sap, it is possible to * have multiple sap connections via multiple macs. * Bind and autobind for that matter must enforce the correct sap usage * otherwise all hell will break loose. * Returns: 0 upon success, negative otherwise. */ static int llc_ui_bind(struct socket *sock, struct sockaddr *uaddr, int addrlen) { struct sockaddr_llc *addr = (struct sockaddr_llc *)uaddr; struct sock *sk = sock->sk; struct llc_sock *llc = llc_sk(sk); struct llc_sap *sap; int rc = -EINVAL; |
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dprintk("%s: binding %02X ", __func__, addr->sllc_sap); |
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if (unlikely(!sock_flag(sk, SOCK_ZAPPED) || addrlen != sizeof(*addr))) |
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goto out; rc = -EAFNOSUPPORT; |
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if (unlikely(addr->sllc_family != AF_LLC)) |
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goto out; |
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rc = -ENODEV; |
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rcu_read_lock(); |
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if (sk->sk_bound_dev_if) { |
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llc->dev = dev_get_by_index_rcu(&init_net, sk->sk_bound_dev_if); |
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if (llc->dev) { if (!addr->sllc_arphrd) addr->sllc_arphrd = llc->dev->type; if (llc_mac_null(addr->sllc_mac)) memcpy(addr->sllc_mac, llc->dev->dev_addr, IFHWADDRLEN); if (addr->sllc_arphrd != llc->dev->type || !llc_mac_match(addr->sllc_mac, llc->dev->dev_addr)) { rc = -EINVAL; |
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llc->dev = NULL; } } } else |
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llc->dev = dev_getbyhwaddr_rcu(&init_net, addr->sllc_arphrd, |
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addr->sllc_mac); |
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if (llc->dev) dev_hold(llc->dev); rcu_read_unlock(); |
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if (!llc->dev) goto out; |
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if (!addr->sllc_sap) { rc = -EUSERS; addr->sllc_sap = llc_ui_autoport(); if (!addr->sllc_sap) goto out; } sap = llc_sap_find(addr->sllc_sap); if (!sap) { sap = llc_sap_open(addr->sllc_sap, NULL); rc = -EBUSY; /* some other network layer is using the sap */ if (!sap) goto out; } else { struct llc_addr laddr, daddr; struct sock *ask; memset(&laddr, 0, sizeof(laddr)); memset(&daddr, 0, sizeof(daddr)); /* |
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* FIXME: check if the address is multicast, |
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* only SOCK_DGRAM can do this. */ memcpy(laddr.mac, addr->sllc_mac, IFHWADDRLEN); laddr.lsap = addr->sllc_sap; rc = -EADDRINUSE; /* mac + sap clash. */ ask = llc_lookup_established(sap, &daddr, &laddr); if (ask) { sock_put(ask); |
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goto out_put; |
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} } llc->laddr.lsap = addr->sllc_sap; memcpy(llc->laddr.mac, addr->sllc_mac, IFHWADDRLEN); memcpy(&llc->addr, addr, sizeof(llc->addr)); /* assign new connection to its SAP */ llc_sap_add_socket(sap, sk); sock_reset_flag(sk, SOCK_ZAPPED); rc = 0; |
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out_put: llc_sap_put(sap); |
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out: return rc; } /** * llc_ui_shutdown - shutdown a connect llc2 socket. * @sock: Socket to shutdown. * @how: What part of the socket to shutdown. * * Shutdown a connected llc2 socket. Currently this function only supports * shutting down both sends and receives (2), we could probably make this * function such that a user can shutdown only half the connection but not * right now. * Returns: 0 upon success, negative otherwise. */ static int llc_ui_shutdown(struct socket *sock, int how) { struct sock *sk = sock->sk; int rc = -ENOTCONN; lock_sock(sk); |
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if (unlikely(sk->sk_state != TCP_ESTABLISHED)) |
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goto out; rc = -EINVAL; if (how != 2) goto out; rc = llc_send_disc(sk); if (!rc) rc = llc_ui_wait_for_disc(sk, sk->sk_rcvtimeo); /* Wake up anyone sleeping in poll */ sk->sk_state_change(sk); out: release_sock(sk); return rc; } /** * llc_ui_connect - Connect to a remote llc2 mac + sap. * @sock: Socket which will be connected to the remote destination. * @uaddr: Remote and possibly the local address of the new connection. * @addrlen: Size of uaddr structure. * @flags: Operational flags specified by the user. * * Connect to a remote llc2 mac + sap. The caller must specify the * destination mac and address to connect to. If the user hasn't previously * called bind(2) with a smac the address of the first interface of the * specified arp type will be used. * This function will autobind if user did not previously call bind. * Returns: 0 upon success, negative otherwise. */ static int llc_ui_connect(struct socket *sock, struct sockaddr *uaddr, int addrlen, int flags) { struct sock *sk = sock->sk; struct llc_sock *llc = llc_sk(sk); struct sockaddr_llc *addr = (struct sockaddr_llc *)uaddr; |
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int rc = -EINVAL; lock_sock(sk); |
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if (unlikely(addrlen != sizeof(*addr))) |
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goto out; rc = -EAFNOSUPPORT; |
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if (unlikely(addr->sllc_family != AF_LLC)) goto out; if (unlikely(sk->sk_type != SOCK_STREAM)) goto out; rc = -EALREADY; if (unlikely(sock->state == SS_CONNECTING)) |
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goto out; /* bind connection to sap if user hasn't done it. */ if (sock_flag(sk, SOCK_ZAPPED)) { /* bind to sap with null dev, exclusive */ rc = llc_ui_autobind(sock, addr); if (rc) goto out; |
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} |
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llc->daddr.lsap = addr->sllc_sap; memcpy(llc->daddr.mac, addr->sllc_mac, IFHWADDRLEN); |
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sock->state = SS_CONNECTING; sk->sk_state = TCP_SYN_SENT; llc->link = llc_ui_next_link_no(llc->sap->laddr.lsap); |
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rc = llc_establish_connection(sk, llc->dev->dev_addr, |
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addr->sllc_mac, addr->sllc_sap); if (rc) { |
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dprintk("%s: llc_ui_send_conn failed :-( ", __func__); |
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sock->state = SS_UNCONNECTED; sk->sk_state = TCP_CLOSE; goto out; } |
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if (sk->sk_state == TCP_SYN_SENT) { |
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const long timeo = sock_sndtimeo(sk, flags & O_NONBLOCK); |
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if (!timeo || !llc_ui_wait_for_conn(sk, timeo)) goto out; rc = sock_intr_errno(timeo); if (signal_pending(current)) goto out; } if (sk->sk_state == TCP_CLOSE) goto sock_error; sock->state = SS_CONNECTED; rc = 0; |
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out: release_sock(sk); return rc; |
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sock_error: rc = sock_error(sk) ? : -ECONNABORTED; sock->state = SS_UNCONNECTED; goto out; |
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} /** * llc_ui_listen - allow a normal socket to accept incoming connections * @sock: Socket to allow incoming connections on. * @backlog: Number of connections to queue. * * Allow a normal socket to accept incoming connections. * Returns 0 upon success, negative otherwise. */ static int llc_ui_listen(struct socket *sock, int backlog) { struct sock *sk = sock->sk; int rc = -EINVAL; lock_sock(sk); |
af426d327 [LLC]: Help the c... |
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if (unlikely(sock->state != SS_UNCONNECTED)) |
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goto out; rc = -EOPNOTSUPP; |
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if (unlikely(sk->sk_type != SOCK_STREAM)) |
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goto out; rc = -EAGAIN; if (sock_flag(sk, SOCK_ZAPPED)) goto out; rc = 0; if (!(unsigned)backlog) /* BSDism */ backlog = 1; sk->sk_max_ack_backlog = backlog; if (sk->sk_state != TCP_LISTEN) { sk->sk_ack_backlog = 0; sk->sk_state = TCP_LISTEN; } sk->sk_socket->flags |= __SO_ACCEPTCON; out: release_sock(sk); return rc; } |
54fb7f25f [LLC]: Use the sk... |
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static int llc_ui_wait_for_disc(struct sock *sk, long timeout) |
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{ |
b35bd1101 [LLC]: Convert ll... |
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DEFINE_WAIT(wait); int rc = 0; |
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|
54fb7f25f [LLC]: Use the sk... |
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while (1) { |
aa3951451 net: sk_sleep() h... |
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prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
54fb7f25f [LLC]: Use the sk... |
534 535 |
if (sk_wait_event(sk, &timeout, sk->sk_state == TCP_CLOSE)) break; |
1da177e4c Linux-2.6.12-rc2 |
536 537 538 539 540 541 |
rc = -ERESTARTSYS; if (signal_pending(current)) break; rc = -EAGAIN; if (!timeout) break; |
b35bd1101 [LLC]: Convert ll... |
542 |
rc = 0; |
1da177e4c Linux-2.6.12-rc2 |
543 |
} |
aa3951451 net: sk_sleep() h... |
544 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c Linux-2.6.12-rc2 |
545 546 |
return rc; } |
54fb7f25f [LLC]: Use the sk... |
547 |
static int llc_ui_wait_for_conn(struct sock *sk, long timeout) |
1da177e4c Linux-2.6.12-rc2 |
548 |
{ |
b35bd1101 [LLC]: Convert ll... |
549 |
DEFINE_WAIT(wait); |
1da177e4c Linux-2.6.12-rc2 |
550 |
|
54fb7f25f [LLC]: Use the sk... |
551 |
while (1) { |
aa3951451 net: sk_sleep() h... |
552 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
54fb7f25f [LLC]: Use the sk... |
553 554 |
if (sk_wait_event(sk, &timeout, sk->sk_state != TCP_SYN_SENT)) break; |
b35bd1101 [LLC]: Convert ll... |
555 |
if (signal_pending(current) || !timeout) |
1da177e4c Linux-2.6.12-rc2 |
556 557 |
break; } |
aa3951451 net: sk_sleep() h... |
558 |
finish_wait(sk_sleep(sk), &wait); |
b35bd1101 [LLC]: Convert ll... |
559 |
return timeout; |
1da177e4c Linux-2.6.12-rc2 |
560 |
} |
afdbe3578 [LLC]: Use sk_wai... |
561 |
static int llc_ui_wait_for_busy_core(struct sock *sk, long timeout) |
1da177e4c Linux-2.6.12-rc2 |
562 |
{ |
b35bd1101 [LLC]: Convert ll... |
563 |
DEFINE_WAIT(wait); |
afdbe3578 [LLC]: Use sk_wai... |
564 565 |
struct llc_sock *llc = llc_sk(sk); int rc; |
1da177e4c Linux-2.6.12-rc2 |
566 |
|
54fb7f25f [LLC]: Use the sk... |
567 |
while (1) { |
aa3951451 net: sk_sleep() h... |
568 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
afdbe3578 [LLC]: Use sk_wai... |
569 |
rc = 0; |
54fb7f25f [LLC]: Use the sk... |
570 571 |
if (sk_wait_event(sk, &timeout, (sk->sk_shutdown & RCV_SHUTDOWN) || |
afdbe3578 [LLC]: Use sk_wai... |
572 |
(!llc_data_accept_state(llc->state) && |
451677c46 [LLC]: Make core ... |
573 |
!llc->remote_busy_flag && |
afdbe3578 [LLC]: Use sk_wai... |
574 |
!llc->p_flag))) |
1da177e4c Linux-2.6.12-rc2 |
575 |
break; |
1da177e4c Linux-2.6.12-rc2 |
576 577 578 579 580 581 582 |
rc = -ERESTARTSYS; if (signal_pending(current)) break; rc = -EAGAIN; if (!timeout) break; } |
aa3951451 net: sk_sleep() h... |
583 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c Linux-2.6.12-rc2 |
584 585 |
return rc; } |
2928c19e1 [LLC]: Fix sparse... |
586 |
static int llc_wait_data(struct sock *sk, long timeo) |
1da177e4c Linux-2.6.12-rc2 |
587 |
{ |
1da177e4c Linux-2.6.12-rc2 |
588 |
int rc; |
54fb7f25f [LLC]: Use the sk... |
589 |
while (1) { |
afdbe3578 [LLC]: Use sk_wai... |
590 591 592 |
/* * POSIX 1003.1g mandates this order. */ |
c1cbe4b7a [NET]: Avoid atom... |
593 594 |
rc = sock_error(sk); if (rc) |
afdbe3578 [LLC]: Use sk_wai... |
595 |
break; |
1da177e4c Linux-2.6.12-rc2 |
596 |
rc = 0; |
afdbe3578 [LLC]: Use sk_wai... |
597 |
if (sk->sk_shutdown & RCV_SHUTDOWN) |
1da177e4c Linux-2.6.12-rc2 |
598 |
break; |
afdbe3578 [LLC]: Use sk_wai... |
599 600 601 602 |
rc = -EAGAIN; if (!timeo) break; rc = sock_intr_errno(timeo); |
1da177e4c Linux-2.6.12-rc2 |
603 604 |
if (signal_pending(current)) break; |
afdbe3578 [LLC]: Use sk_wai... |
605 606 |
rc = 0; if (sk_wait_data(sk, &timeo)) |
1da177e4c Linux-2.6.12-rc2 |
607 608 |
break; } |
1da177e4c Linux-2.6.12-rc2 |
609 610 |
return rc; } |
e5cd6fe39 llc: add support ... |
611 612 613 614 615 616 617 618 619 620 621 622 623 |
static void llc_cmsg_rcv(struct msghdr *msg, struct sk_buff *skb) { struct llc_sock *llc = llc_sk(skb->sk); if (llc->cmsg_flags & LLC_CMSG_PKTINFO) { struct llc_pktinfo info; info.lpi_ifindex = llc_sk(skb->sk)->dev->ifindex; llc_pdu_decode_dsap(skb, &info.lpi_sap); llc_pdu_decode_da(skb, info.lpi_mac); put_cmsg(msg, SOL_LLC, LLC_OPT_PKTINFO, sizeof(info), &info); } } |
1da177e4c Linux-2.6.12-rc2 |
624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 |
/** * llc_ui_accept - accept a new incoming connection. * @sock: Socket which connections arrive on. * @newsock: Socket to move incoming connection to. * @flags: User specified operational flags. * * Accept a new incoming connection. * Returns 0 upon success, negative otherwise. */ static int llc_ui_accept(struct socket *sock, struct socket *newsock, int flags) { struct sock *sk = sock->sk, *newsk; struct llc_sock *llc, *newllc; struct sk_buff *skb; int rc = -EOPNOTSUPP; |
0dc47877a net: replace rema... |
639 640 |
dprintk("%s: accepting on %02X ", __func__, |
d57b1869b [NET] LLC: Fix wh... |
641 |
llc_sk(sk)->laddr.lsap); |
1da177e4c Linux-2.6.12-rc2 |
642 |
lock_sock(sk); |
af426d327 [LLC]: Help the c... |
643 |
if (unlikely(sk->sk_type != SOCK_STREAM)) |
1da177e4c Linux-2.6.12-rc2 |
644 645 |
goto out; rc = -EINVAL; |
af426d327 [LLC]: Help the c... |
646 647 |
if (unlikely(sock->state != SS_UNCONNECTED || sk->sk_state != TCP_LISTEN)) |
1da177e4c Linux-2.6.12-rc2 |
648 649 |
goto out; /* wait for a connection to arrive. */ |
b35bd1101 [LLC]: Convert ll... |
650 |
if (skb_queue_empty(&sk->sk_receive_queue)) { |
afdbe3578 [LLC]: Use sk_wai... |
651 |
rc = llc_wait_data(sk, sk->sk_rcvtimeo); |
b35bd1101 [LLC]: Convert ll... |
652 653 654 |
if (rc) goto out; } |
0dc47877a net: replace rema... |
655 656 |
dprintk("%s: got a new connection on %02X ", __func__, |
d57b1869b [NET] LLC: Fix wh... |
657 |
llc_sk(sk)->laddr.lsap); |
1da177e4c Linux-2.6.12-rc2 |
658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 |
skb = skb_dequeue(&sk->sk_receive_queue); rc = -EINVAL; if (!skb->sk) goto frees; rc = 0; newsk = skb->sk; /* attach connection to a new socket. */ llc_ui_sk_init(newsock, newsk); sock_reset_flag(newsk, SOCK_ZAPPED); newsk->sk_state = TCP_ESTABLISHED; newsock->state = SS_CONNECTED; llc = llc_sk(sk); newllc = llc_sk(newsk); memcpy(&newllc->addr, &llc->addr, sizeof(newllc->addr)); newllc->link = llc_ui_next_link_no(newllc->laddr.lsap); /* put original socket back into a clean listen state. */ sk->sk_state = TCP_LISTEN; sk->sk_ack_backlog--; |
0dc47877a net: replace rema... |
677 678 |
dprintk("%s: ok success on %02X, client on %02X ", __func__, |
1da177e4c Linux-2.6.12-rc2 |
679 680 681 682 683 684 685 686 687 688 689 690 |
llc_sk(sk)->addr.sllc_sap, newllc->daddr.lsap); frees: kfree_skb(skb); out: release_sock(sk); return rc; } /** * llc_ui_recvmsg - copy received data to the socket user. * @sock: Socket to copy data from. * @msg: Various user space related information. |
8420e1b54 [LLC]: fix llc_ui... |
691 |
* @len: Size of user buffer. |
1da177e4c Linux-2.6.12-rc2 |
692 693 694 695 696 697 |
* @flags: User specified flags. * * Copy received data to the socket user. * Returns non-negative upon success, negative otherwise. */ static int llc_ui_recvmsg(struct kiocb *iocb, struct socket *sock, |
8420e1b54 [LLC]: fix llc_ui... |
698 |
struct msghdr *msg, size_t len, int flags) |
1da177e4c Linux-2.6.12-rc2 |
699 |
{ |
1da177e4c Linux-2.6.12-rc2 |
700 |
struct sockaddr_llc *uaddr = (struct sockaddr_llc *)msg->msg_name; |
8420e1b54 [LLC]: fix llc_ui... |
701 702 703 704 |
const int nonblock = flags & MSG_DONTWAIT; struct sk_buff *skb = NULL; struct sock *sk = sock->sk; struct llc_sock *llc = llc_sk(sk); |
1da177e4c Linux-2.6.12-rc2 |
705 |
size_t copied = 0; |
8420e1b54 [LLC]: fix llc_ui... |
706 707 708 709 710 |
u32 peek_seq = 0; u32 *seq; unsigned long used; int target; /* Read at least this many bytes */ long timeo; |
1da177e4c Linux-2.6.12-rc2 |
711 |
|
1da177e4c Linux-2.6.12-rc2 |
712 |
lock_sock(sk); |
8420e1b54 [LLC]: fix llc_ui... |
713 |
copied = -ENOTCONN; |
29efcd266 [LLC]: allow data... |
714 |
if (unlikely(sk->sk_type == SOCK_STREAM && sk->sk_state == TCP_LISTEN)) |
1da177e4c Linux-2.6.12-rc2 |
715 |
goto out; |
8420e1b54 [LLC]: fix llc_ui... |
716 717 718 719 720 721 722 |
timeo = sock_rcvtimeo(sk, nonblock); seq = &llc->copied_seq; if (flags & MSG_PEEK) { peek_seq = llc->copied_seq; seq = &peek_seq; |
d57b1869b [NET] LLC: Fix wh... |
723 |
} |
8420e1b54 [LLC]: fix llc_ui... |
724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 |
target = sock_rcvlowat(sk, flags & MSG_WAITALL, len); copied = 0; do { u32 offset; /* * We need to check signals first, to get correct SIGURG * handling. FIXME: Need to check this doesn't impact 1003.1g * and move it down to the bottom of the loop */ if (signal_pending(current)) { if (copied) break; copied = timeo ? sock_intr_errno(timeo) : -EAGAIN; break; } /* Next get a buffer. */ skb = skb_peek(&sk->sk_receive_queue); if (skb) { offset = *seq; goto found_ok_skb; } /* Well, if we have backlog, try to process it now yet. */ if (copied >= target && !sk->sk_backlog.tail) break; if (copied) { if (sk->sk_err || sk->sk_state == TCP_CLOSE || (sk->sk_shutdown & RCV_SHUTDOWN) || !timeo || (flags & MSG_PEEK)) break; } else { if (sock_flag(sk, SOCK_DONE)) break; if (sk->sk_err) { copied = sock_error(sk); break; } if (sk->sk_shutdown & RCV_SHUTDOWN) break; |
29efcd266 [LLC]: allow data... |
772 |
if (sk->sk_type == SOCK_STREAM && sk->sk_state == TCP_CLOSE) { |
8420e1b54 [LLC]: fix llc_ui... |
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 |
if (!sock_flag(sk, SOCK_DONE)) { /* * This occurs when user tries to read * from never connected socket. */ copied = -ENOTCONN; break; } break; } if (!timeo) { copied = -EAGAIN; break; } } if (copied >= target) { /* Do not sleep, just process backlog. */ release_sock(sk); lock_sock(sk); } else sk_wait_data(sk, &timeo); if ((flags & MSG_PEEK) && peek_seq != llc->copied_seq) { if (net_ratelimit()) printk(KERN_DEBUG "LLC(%s:%d): Application " "bug, race in MSG_PEEK. ", |
ba25f9dcc Use helpers to ob... |
800 |
current->comm, task_pid_nr(current)); |
8420e1b54 [LLC]: fix llc_ui... |
801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 |
peek_seq = llc->copied_seq; } continue; found_ok_skb: /* Ok so how much can we use? */ used = skb->len - offset; if (len < used) used = len; if (!(flags & MSG_TRUNC)) { int rc = skb_copy_datagram_iovec(skb, offset, msg->msg_iov, used); if (rc) { /* Exception. Bailout! */ if (!copied) copied = -EFAULT; break; } } *seq += used; copied += used; len -= used; |
9cef310fc llc: llc_cmsg_rcv... |
824 825 826 |
/* For non stream protcols we get one packet per recvmsg call */ if (sk->sk_type != SOCK_STREAM) goto copy_uaddr; |
8420e1b54 [LLC]: fix llc_ui... |
827 |
if (!(flags & MSG_PEEK)) { |
624d11647 [I/OAT]: Make sk_... |
828 |
sk_eat_skb(sk, skb, 0); |
8420e1b54 [LLC]: fix llc_ui... |
829 830 |
*seq = 0; } |
30a584d94 [LLX]: SOCK_DGRAM... |
831 |
|
30a584d94 [LLX]: SOCK_DGRAM... |
832 833 834 |
/* Partial read */ if (used + offset < skb->len) continue; |
8420e1b54 [LLC]: fix llc_ui... |
835 |
} while (len > 0); |
1da177e4c Linux-2.6.12-rc2 |
836 837 |
out: release_sock(sk); |
8420e1b54 [LLC]: fix llc_ui... |
838 839 840 841 842 843 |
return copied; copy_uaddr: if (uaddr != NULL && skb != NULL) { memcpy(uaddr, llc_ui_skb_cb(skb), sizeof(*uaddr)); msg->msg_namelen = sizeof(*uaddr); } |
e5cd6fe39 llc: add support ... |
844 845 |
if (llc_sk(sk)->cmsg_flags) llc_cmsg_rcv(msg, skb); |
9cef310fc llc: llc_cmsg_rcv... |
846 847 848 849 850 |
if (!(flags & MSG_PEEK)) { sk_eat_skb(sk, skb, 0); *seq = 0; } |
8420e1b54 [LLC]: fix llc_ui... |
851 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 |
} /** * llc_ui_sendmsg - Transmit data provided by the socket user. * @sock: Socket to transmit data from. * @msg: Various user related information. * @len: Length of data to transmit. * * Transmit data provided by the socket user. * Returns non-negative upon success, negative otherwise. */ static int llc_ui_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len) { struct sock *sk = sock->sk; struct llc_sock *llc = llc_sk(sk); struct sockaddr_llc *addr = (struct sockaddr_llc *)msg->msg_name; int flags = msg->msg_flags; int noblock = flags & MSG_DONTWAIT; |
1da177e4c Linux-2.6.12-rc2 |
871 872 873 |
struct sk_buff *skb; size_t size = 0; int rc = -EINVAL, copied = 0, hdrlen; |
0dc47877a net: replace rema... |
874 875 |
dprintk("%s: sending from %02X to %02X ", __func__, |
1da177e4c Linux-2.6.12-rc2 |
876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 |
llc->laddr.lsap, llc->daddr.lsap); lock_sock(sk); if (addr) { if (msg->msg_namelen < sizeof(*addr)) goto release; } else { if (llc_ui_addr_null(&llc->addr)) goto release; addr = &llc->addr; } /* must bind connection to sap if user hasn't done it. */ if (sock_flag(sk, SOCK_ZAPPED)) { /* bind to sap with null dev, exclusive. */ rc = llc_ui_autobind(sock, addr); if (rc) goto release; } |
774ccb4f6 [LLC]: Remove unn... |
893 |
hdrlen = llc->dev->hard_header_len + llc_ui_header_len(sk, addr); |
1da177e4c Linux-2.6.12-rc2 |
894 |
size = hdrlen + len; |
774ccb4f6 [LLC]: Remove unn... |
895 896 |
if (size > llc->dev->mtu) size = llc->dev->mtu; |
1da177e4c Linux-2.6.12-rc2 |
897 898 899 900 901 902 |
copied = size - hdrlen; release_sock(sk); skb = sock_alloc_send_skb(sk, size, noblock, &rc); lock_sock(sk); if (!skb) goto release; |
774ccb4f6 [LLC]: Remove unn... |
903 |
skb->dev = llc->dev; |
1da177e4c Linux-2.6.12-rc2 |
904 |
skb->protocol = llc_proto_type(addr->sllc_arphrd); |
d57b1869b [NET] LLC: Fix wh... |
905 |
skb_reserve(skb, hdrlen); |
1da177e4c Linux-2.6.12-rc2 |
906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 |
rc = memcpy_fromiovec(skb_put(skb, copied), msg->msg_iov, copied); if (rc) goto out; if (sk->sk_type == SOCK_DGRAM || addr->sllc_ua) { llc_build_and_send_ui_pkt(llc->sap, skb, addr->sllc_mac, addr->sllc_sap); goto out; } if (addr->sllc_test) { llc_build_and_send_test_pkt(llc->sap, skb, addr->sllc_mac, addr->sllc_sap); goto out; } if (addr->sllc_xid) { llc_build_and_send_xid_pkt(llc->sap, skb, addr->sllc_mac, addr->sllc_sap); goto out; } rc = -ENOPROTOOPT; if (!(sk->sk_type == SOCK_STREAM && !addr->sllc_ua)) goto out; rc = llc_ui_send_data(sk, skb, noblock); |
1da177e4c Linux-2.6.12-rc2 |
928 |
out: |
249ff1c6d [LLC]: Use some m... |
929 |
if (rc) { |
1da177e4c Linux-2.6.12-rc2 |
930 931 |
kfree_skb(skb); release: |
1da177e4c Linux-2.6.12-rc2 |
932 933 |
dprintk("%s: failed sending from %02X to %02X: %d ", |
0dc47877a net: replace rema... |
934 |
__func__, llc->laddr.lsap, llc->daddr.lsap, rc); |
249ff1c6d [LLC]: Use some m... |
935 |
} |
1da177e4c Linux-2.6.12-rc2 |
936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 |
release_sock(sk); return rc ? : copied; } /** * llc_ui_getname - return the address info of a socket * @sock: Socket to get address of. * @uaddr: Address structure to return information. * @uaddrlen: Length of address structure. * @peer: Does user want local or remote address information. * * Return the address information of a socket. */ static int llc_ui_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddrlen, int peer) { struct sockaddr_llc sllc; struct sock *sk = sock->sk; struct llc_sock *llc = llc_sk(sk); int rc = 0; |
28e9fc592 NET: llc, zero so... |
956 |
memset(&sllc, 0, sizeof(sllc)); |
1da177e4c Linux-2.6.12-rc2 |
957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 |
lock_sock(sk); if (sock_flag(sk, SOCK_ZAPPED)) goto out; *uaddrlen = sizeof(sllc); memset(uaddr, 0, *uaddrlen); if (peer) { rc = -ENOTCONN; if (sk->sk_state != TCP_ESTABLISHED) goto out; if(llc->dev) sllc.sllc_arphrd = llc->dev->type; sllc.sllc_sap = llc->daddr.lsap; memcpy(&sllc.sllc_mac, &llc->daddr.mac, IFHWADDRLEN); } else { rc = -EINVAL; if (!llc->sap) goto out; sllc.sllc_sap = llc->sap->laddr.lsap; if (llc->dev) { sllc.sllc_arphrd = llc->dev->type; |
a186d2aea net: remove needl... |
978 |
memcpy(&sllc.sllc_mac, llc->dev->dev_addr, |
1da177e4c Linux-2.6.12-rc2 |
979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 |
IFHWADDRLEN); } } rc = 0; sllc.sllc_family = AF_LLC; memcpy(uaddr, &sllc, sizeof(sllc)); out: release_sock(sk); return rc; } /** * llc_ui_ioctl - io controls for PF_LLC * @sock: Socket to get/set info * @cmd: command * @arg: optional argument for cmd * * get/set info on llc sockets */ static int llc_ui_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { |
b5e5fa5e0 [NET]: Add a dev_... |
1001 |
return -ENOIOCTLCMD; |
1da177e4c Linux-2.6.12-rc2 |
1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 |
} /** * llc_ui_setsockopt - set various connection specific parameters. * @sock: Socket to set options on. * @level: Socket level user is requesting operations on. * @optname: Operation name. * @optval User provided operation data. * @optlen: Length of optval. * * Set various connection specific parameters. */ static int llc_ui_setsockopt(struct socket *sock, int level, int optname, |
b7058842c net: Make setsock... |
1015 |
char __user *optval, unsigned int optlen) |
1da177e4c Linux-2.6.12-rc2 |
1016 1017 1018 |
{ struct sock *sk = sock->sk; struct llc_sock *llc = llc_sk(sk); |
339db11b2 net/llc: make opt... |
1019 1020 |
unsigned int opt; int rc = -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1021 1022 |
lock_sock(sk); |
af426d327 [LLC]: Help the c... |
1023 |
if (unlikely(level != SOL_LLC || optlen != sizeof(int))) |
1da177e4c Linux-2.6.12-rc2 |
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 |
goto out; rc = get_user(opt, (int __user *)optval); if (rc) goto out; rc = -EINVAL; switch (optname) { case LLC_OPT_RETRY: if (opt > LLC_OPT_MAX_RETRY) goto out; llc->n2 = opt; break; case LLC_OPT_SIZE: if (opt > LLC_OPT_MAX_SIZE) goto out; llc->n1 = opt; break; case LLC_OPT_ACK_TMR_EXP: if (opt > LLC_OPT_MAX_ACK_TMR_EXP) goto out; |
590232a71 [LLC]: Add sysctl... |
1043 |
llc->ack_timer.expire = opt * HZ; |
1da177e4c Linux-2.6.12-rc2 |
1044 1045 1046 1047 |
break; case LLC_OPT_P_TMR_EXP: if (opt > LLC_OPT_MAX_P_TMR_EXP) goto out; |
590232a71 [LLC]: Add sysctl... |
1048 |
llc->pf_cycle_timer.expire = opt * HZ; |
1da177e4c Linux-2.6.12-rc2 |
1049 1050 1051 1052 |
break; case LLC_OPT_REJ_TMR_EXP: if (opt > LLC_OPT_MAX_REJ_TMR_EXP) goto out; |
590232a71 [LLC]: Add sysctl... |
1053 |
llc->rej_sent_timer.expire = opt * HZ; |
1da177e4c Linux-2.6.12-rc2 |
1054 1055 1056 1057 |
break; case LLC_OPT_BUSY_TMR_EXP: if (opt > LLC_OPT_MAX_BUSY_TMR_EXP) goto out; |
590232a71 [LLC]: Add sysctl... |
1058 |
llc->busy_state_timer.expire = opt * HZ; |
1da177e4c Linux-2.6.12-rc2 |
1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 |
break; case LLC_OPT_TX_WIN: if (opt > LLC_OPT_MAX_WIN) goto out; llc->k = opt; break; case LLC_OPT_RX_WIN: if (opt > LLC_OPT_MAX_WIN) goto out; llc->rw = opt; break; |
e5cd6fe39 llc: add support ... |
1070 1071 1072 1073 1074 1075 |
case LLC_OPT_PKTINFO: if (opt) llc->cmsg_flags |= LLC_CMSG_PKTINFO; else llc->cmsg_flags &= ~LLC_CMSG_PKTINFO; break; |
1da177e4c Linux-2.6.12-rc2 |
1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 |
default: rc = -ENOPROTOOPT; goto out; } rc = 0; out: release_sock(sk); return rc; } /** * llc_ui_getsockopt - get connection specific socket info * @sock: Socket to get information from. * @level: Socket level user is requesting operations on. * @optname: Operation name. * @optval: Variable to return operation data in. * @optlen: Length of optval. * * Get connection specific socket information. */ static int llc_ui_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) { struct sock *sk = sock->sk; struct llc_sock *llc = llc_sk(sk); int val = 0, len = 0, rc = -EINVAL; lock_sock(sk); |
af426d327 [LLC]: Help the c... |
1104 |
if (unlikely(level != SOL_LLC)) |
1da177e4c Linux-2.6.12-rc2 |
1105 1106 1107 1108 1109 1110 1111 1112 1113 |
goto out; rc = get_user(len, optlen); if (rc) goto out; rc = -EINVAL; if (len != sizeof(int)) goto out; switch (optname) { case LLC_OPT_RETRY: |
590232a71 [LLC]: Add sysctl... |
1114 |
val = llc->n2; break; |
1da177e4c Linux-2.6.12-rc2 |
1115 |
case LLC_OPT_SIZE: |
590232a71 [LLC]: Add sysctl... |
1116 |
val = llc->n1; break; |
1da177e4c Linux-2.6.12-rc2 |
1117 |
case LLC_OPT_ACK_TMR_EXP: |
590232a71 [LLC]: Add sysctl... |
1118 |
val = llc->ack_timer.expire / HZ; break; |
1da177e4c Linux-2.6.12-rc2 |
1119 |
case LLC_OPT_P_TMR_EXP: |
590232a71 [LLC]: Add sysctl... |
1120 |
val = llc->pf_cycle_timer.expire / HZ; break; |
1da177e4c Linux-2.6.12-rc2 |
1121 |
case LLC_OPT_REJ_TMR_EXP: |
590232a71 [LLC]: Add sysctl... |
1122 |
val = llc->rej_sent_timer.expire / HZ; break; |
1da177e4c Linux-2.6.12-rc2 |
1123 |
case LLC_OPT_BUSY_TMR_EXP: |
590232a71 [LLC]: Add sysctl... |
1124 |
val = llc->busy_state_timer.expire / HZ; break; |
1da177e4c Linux-2.6.12-rc2 |
1125 1126 1127 1128 |
case LLC_OPT_TX_WIN: val = llc->k; break; case LLC_OPT_RX_WIN: val = llc->rw; break; |
e5cd6fe39 llc: add support ... |
1129 1130 1131 |
case LLC_OPT_PKTINFO: val = (llc->cmsg_flags & LLC_CMSG_PKTINFO) != 0; break; |
1da177e4c Linux-2.6.12-rc2 |
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 |
default: rc = -ENOPROTOOPT; goto out; } rc = 0; if (put_user(len, optlen) || copy_to_user(optval, &val, len)) rc = -EFAULT; out: release_sock(sk); return rc; } |
ec1b4cf74 net: mark net_pro... |
1143 |
static const struct net_proto_family llc_ui_family_ops = { |
1da177e4c Linux-2.6.12-rc2 |
1144 1145 1146 1147 |
.family = PF_LLC, .create = llc_ui_create, .owner = THIS_MODULE, }; |
90ddc4f04 [NET]: move struc... |
1148 |
static const struct proto_ops llc_ui_ops = { |
1da177e4c Linux-2.6.12-rc2 |
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 |
.family = PF_LLC, .owner = THIS_MODULE, .release = llc_ui_release, .bind = llc_ui_bind, .connect = llc_ui_connect, .socketpair = sock_no_socketpair, .accept = llc_ui_accept, .getname = llc_ui_getname, .poll = datagram_poll, .ioctl = llc_ui_ioctl, .listen = llc_ui_listen, .shutdown = llc_ui_shutdown, .setsockopt = llc_ui_setsockopt, .getsockopt = llc_ui_getsockopt, .sendmsg = llc_ui_sendmsg, .recvmsg = llc_ui_recvmsg, .mmap = sock_no_mmap, .sendpage = sock_no_sendpage, }; |
01af4a0e3 llc: fix non-cons... |
1168 |
static const char llc_proc_err_msg[] __initconst = |
d57b1869b [NET] LLC: Fix wh... |
1169 1170 |
KERN_CRIT "LLC: Unable to register the proc_fs entries "; |
01af4a0e3 llc: fix non-cons... |
1171 |
static const char llc_sysctl_err_msg[] __initconst = |
d57b1869b [NET] LLC: Fix wh... |
1172 1173 |
KERN_CRIT "LLC: Unable to register the sysctl entries "; |
01af4a0e3 llc: fix non-cons... |
1174 |
static const char llc_sock_err_msg[] __initconst = |
d57b1869b [NET] LLC: Fix wh... |
1175 1176 |
KERN_CRIT "LLC: Unable to register the network family "; |
590232a71 [LLC]: Add sysctl... |
1177 |
|
1da177e4c Linux-2.6.12-rc2 |
1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 |
static int __init llc2_init(void) { int rc = proto_register(&llc_proto, 0); if (rc != 0) goto out; llc_build_offset_table(); llc_station_init(); llc_ui_sap_last_autoport = LLC_SAP_DYN_START; rc = llc_proc_init(); |
590232a71 [LLC]: Add sysctl... |
1189 1190 |
if (rc != 0) { printk(llc_proc_err_msg); |
1da177e4c Linux-2.6.12-rc2 |
1191 |
goto out_unregister_llc_proto; |
590232a71 [LLC]: Add sysctl... |
1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 |
} rc = llc_sysctl_init(); if (rc) { printk(llc_sysctl_err_msg); goto out_proc; } rc = sock_register(&llc_ui_family_ops); if (rc) { printk(llc_sock_err_msg); goto out_sysctl; } |
1da177e4c Linux-2.6.12-rc2 |
1203 1204 1205 1206 |
llc_add_pack(LLC_DEST_SAP, llc_sap_handler); llc_add_pack(LLC_DEST_CONN, llc_conn_handler); out: return rc; |
590232a71 [LLC]: Add sysctl... |
1207 1208 1209 1210 |
out_sysctl: llc_sysctl_exit(); out_proc: llc_proc_exit(); |
1da177e4c Linux-2.6.12-rc2 |
1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 |
out_unregister_llc_proto: proto_unregister(&llc_proto); goto out; } static void __exit llc2_exit(void) { llc_station_exit(); llc_remove_pack(LLC_DEST_SAP); llc_remove_pack(LLC_DEST_CONN); sock_unregister(PF_LLC); llc_proc_exit(); |
590232a71 [LLC]: Add sysctl... |
1223 |
llc_sysctl_exit(); |
1da177e4c Linux-2.6.12-rc2 |
1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 |
proto_unregister(&llc_proto); } module_init(llc2_init); module_exit(llc2_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Procom 1997, Jay Schullist 2001, Arnaldo C. Melo 2001-2003"); MODULE_DESCRIPTION("IEEE 802.2 PF_LLC support"); MODULE_ALIAS_NETPROTO(PF_LLC); |