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https://github.com/edk2-porting/linux-next.git
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a3d384029a
rose_add_loopback_neigh uses kmalloc and the callers were ignoring the error value. Rewrite to let the caller deal with the allocation. This allows the use of static allocation of kmalloc use entirely. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
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*/
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/timer.h>
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#include <net/ax25.h>
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#include <linux/skbuff.h>
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#include <net/rose.h>
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#include <linux/init.h>
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static struct sk_buff_head loopback_queue;
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static struct timer_list loopback_timer;
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static void rose_set_loopback_timer(void);
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void rose_loopback_init(void)
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{
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skb_queue_head_init(&loopback_queue);
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init_timer(&loopback_timer);
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}
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static int rose_loopback_running(void)
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{
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return timer_pending(&loopback_timer);
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}
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int rose_loopback_queue(struct sk_buff *skb, struct rose_neigh *neigh)
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{
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struct sk_buff *skbn;
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skbn = skb_clone(skb, GFP_ATOMIC);
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kfree_skb(skb);
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if (skbn != NULL) {
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skb_queue_tail(&loopback_queue, skbn);
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if (!rose_loopback_running())
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rose_set_loopback_timer();
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}
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return 1;
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}
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static void rose_loopback_timer(unsigned long);
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static void rose_set_loopback_timer(void)
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{
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del_timer(&loopback_timer);
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loopback_timer.data = 0;
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loopback_timer.function = &rose_loopback_timer;
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loopback_timer.expires = jiffies + 10;
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add_timer(&loopback_timer);
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}
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static void rose_loopback_timer(unsigned long param)
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{
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struct sk_buff *skb;
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struct net_device *dev;
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rose_address *dest;
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struct sock *sk;
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unsigned short frametype;
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unsigned int lci_i, lci_o;
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while ((skb = skb_dequeue(&loopback_queue)) != NULL) {
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lci_i = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF);
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frametype = skb->data[2];
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dest = (rose_address *)(skb->data + 4);
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lci_o = 0xFFF - lci_i;
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skb->h.raw = skb->data;
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sk = rose_find_socket(lci_o, &rose_loopback_neigh);
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if (sk) {
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if (rose_process_rx_frame(sk, skb) == 0)
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kfree_skb(skb);
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continue;
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}
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if (frametype == ROSE_CALL_REQUEST) {
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if ((dev = rose_dev_get(dest)) != NULL) {
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if (rose_rx_call_request(skb, dev, &rose_loopback_neigh, lci_o) == 0)
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kfree_skb(skb);
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} else {
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kfree_skb(skb);
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}
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} else {
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kfree_skb(skb);
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}
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}
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}
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void __exit rose_loopback_clear(void)
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{
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struct sk_buff *skb;
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del_timer(&loopback_timer);
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while ((skb = skb_dequeue(&loopback_queue)) != NULL) {
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skb->sk = NULL;
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kfree_skb(skb);
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}
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}
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