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-rw-r--r--net/rxrpc/ar-error.c230
1 files changed, 0 insertions, 230 deletions
diff --git a/net/rxrpc/ar-error.c b/net/rxrpc/ar-error.c
deleted file mode 100644
index 3e82d6f0313c..000000000000
--- a/net/rxrpc/ar-error.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/* Error message handling (ICMP)
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/module.h>
-#include <linux/net.h>
-#include <linux/skbuff.h>
-#include <linux/errqueue.h>
-#include <linux/udp.h>
-#include <linux/in.h>
-#include <linux/in6.h>
-#include <linux/icmp.h>
-#include <net/sock.h>
-#include <net/af_rxrpc.h>
-#include <net/ip.h>
-#include "ar-internal.h"
-
-/*
- * handle an error received on the local endpoint
- */
-void rxrpc_UDP_error_report(struct sock *sk)
-{
- struct sock_exterr_skb *serr;
- struct rxrpc_transport *trans;
- struct rxrpc_local *local = sk->sk_user_data;
- struct rxrpc_peer *peer;
- struct sk_buff *skb;
- __be32 addr;
- __be16 port;
-
- _enter("%p{%d}", sk, local->debug_id);
-
- skb = sock_dequeue_err_skb(sk);
- if (!skb) {
- _leave("UDP socket errqueue empty");
- return;
- }
- serr = SKB_EXT_ERR(skb);
- if (!skb->len && serr->ee.ee_origin == SO_EE_ORIGIN_TIMESTAMPING) {
- _leave("UDP empty message");
- kfree_skb(skb);
- return;
- }
-
- rxrpc_new_skb(skb);
-
- addr = *(__be32 *)(skb_network_header(skb) + serr->addr_offset);
- port = serr->port;
-
- _net("Rx UDP Error from %pI4:%hu", &addr, ntohs(port));
- _debug("Msg l:%d d:%d", skb->len, skb->data_len);
-
- peer = rxrpc_find_peer(local, addr, port);
- if (IS_ERR(peer)) {
- rxrpc_free_skb(skb);
- _leave(" [no peer]");
- return;
- }
-
- trans = rxrpc_find_transport(local, peer);
- if (!trans) {
- rxrpc_put_peer(peer);
- rxrpc_free_skb(skb);
- _leave(" [no trans]");
- return;
- }
-
- if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP &&
- serr->ee.ee_type == ICMP_DEST_UNREACH &&
- serr->ee.ee_code == ICMP_FRAG_NEEDED
- ) {
- u32 mtu = serr->ee.ee_info;
-
- _net("Rx Received ICMP Fragmentation Needed (%d)", mtu);
-
- /* wind down the local interface MTU */
- if (mtu > 0 && peer->if_mtu == 65535 && mtu < peer->if_mtu) {
- peer->if_mtu = mtu;
- _net("I/F MTU %u", mtu);
- }
-
- if (mtu == 0) {
- /* they didn't give us a size, estimate one */
- mtu = peer->if_mtu;
- if (mtu > 1500) {
- mtu >>= 1;
- if (mtu < 1500)
- mtu = 1500;
- } else {
- mtu -= 100;
- if (mtu < peer->hdrsize)
- mtu = peer->hdrsize + 4;
- }
- }
-
- if (mtu < peer->mtu) {
- spin_lock_bh(&peer->lock);
- peer->mtu = mtu;
- peer->maxdata = peer->mtu - peer->hdrsize;
- spin_unlock_bh(&peer->lock);
- _net("Net MTU %u (maxdata %u)",
- peer->mtu, peer->maxdata);
- }
- }
-
- rxrpc_put_peer(peer);
-
- /* pass the transport ref to error_handler to release */
- skb_queue_tail(&trans->error_queue, skb);
- rxrpc_queue_work(&trans->error_handler);
- _leave("");
-}
-
-/*
- * deal with UDP error messages
- */
-void rxrpc_UDP_error_handler(struct work_struct *work)
-{
- struct sock_extended_err *ee;
- struct sock_exterr_skb *serr;
- struct rxrpc_transport *trans =
- container_of(work, struct rxrpc_transport, error_handler);
- struct sk_buff *skb;
- int err;
-
- _enter("");
-
- skb = skb_dequeue(&trans->error_queue);
- if (!skb)
- return;
-
- serr = SKB_EXT_ERR(skb);
- ee = &serr->ee;
-
- _net("Rx Error o=%d t=%d c=%d e=%d",
- ee->ee_origin, ee->ee_type, ee->ee_code, ee->ee_errno);
-
- err = ee->ee_errno;
-
- switch (ee->ee_origin) {
- case SO_EE_ORIGIN_ICMP:
- switch (ee->ee_type) {
- case ICMP_DEST_UNREACH:
- switch (ee->ee_code) {
- case ICMP_NET_UNREACH:
- _net("Rx Received ICMP Network Unreachable");
- break;
- case ICMP_HOST_UNREACH:
- _net("Rx Received ICMP Host Unreachable");
- break;
- case ICMP_PORT_UNREACH:
- _net("Rx Received ICMP Port Unreachable");
- break;
- case ICMP_NET_UNKNOWN:
- _net("Rx Received ICMP Unknown Network");
- break;
- case ICMP_HOST_UNKNOWN:
- _net("Rx Received ICMP Unknown Host");
- break;
- default:
- _net("Rx Received ICMP DestUnreach code=%u",
- ee->ee_code);
- break;
- }
- break;
-
- case ICMP_TIME_EXCEEDED:
- _net("Rx Received ICMP TTL Exceeded");
- break;
-
- default:
- _proto("Rx Received ICMP error { type=%u code=%u }",
- ee->ee_type, ee->ee_code);
- break;
- }
- break;
-
- case SO_EE_ORIGIN_LOCAL:
- _proto("Rx Received local error { error=%d }",
- ee->ee_errno);
- break;
-
- case SO_EE_ORIGIN_NONE:
- case SO_EE_ORIGIN_ICMP6:
- default:
- _proto("Rx Received error report { orig=%u }",
- ee->ee_origin);
- break;
- }
-
- /* terminate all the affected calls if there's an unrecoverable
- * error */
- if (err) {
- struct rxrpc_call *call, *_n;
-
- _debug("ISSUE ERROR %d", err);
-
- spin_lock_bh(&trans->peer->lock);
- trans->peer->net_error = err;
-
- list_for_each_entry_safe(call, _n, &trans->peer->error_targets,
- error_link) {
- write_lock(&call->state_lock);
- if (call->state != RXRPC_CALL_COMPLETE &&
- call->state < RXRPC_CALL_NETWORK_ERROR) {
- call->state = RXRPC_CALL_NETWORK_ERROR;
- set_bit(RXRPC_CALL_EV_RCVD_ERROR, &call->events);
- rxrpc_queue_call(call);
- }
- write_unlock(&call->state_lock);
- list_del_init(&call->error_link);
- }
-
- spin_unlock_bh(&trans->peer->lock);
- }
-
- if (!skb_queue_empty(&trans->error_queue))
- rxrpc_queue_work(&trans->error_handler);
-
- rxrpc_free_skb(skb);
- rxrpc_put_transport(trans);
- _leave("");
-}