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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:20:36 +0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/rose/rose_loopback.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'net/rose/rose_loopback.c')
-rw-r--r-- | net/rose/rose_loopback.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/net/rose/rose_loopback.c b/net/rose/rose_loopback.c new file mode 100644 index 000000000000..103b4d38f88a --- /dev/null +++ b/net/rose/rose_loopback.c @@ -0,0 +1,111 @@ +/* + * 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. + * + * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk) + */ +#include <linux/types.h> +#include <linux/socket.h> +#include <linux/timer.h> +#include <net/ax25.h> +#include <linux/skbuff.h> +#include <net/rose.h> +#include <linux/init.h> + +static struct sk_buff_head loopback_queue; +static struct timer_list loopback_timer; + +static void rose_set_loopback_timer(void); + +void rose_loopback_init(void) +{ + skb_queue_head_init(&loopback_queue); + + init_timer(&loopback_timer); +} + +static int rose_loopback_running(void) +{ + return timer_pending(&loopback_timer); +} + +int rose_loopback_queue(struct sk_buff *skb, struct rose_neigh *neigh) +{ + struct sk_buff *skbn; + + skbn = skb_clone(skb, GFP_ATOMIC); + + kfree_skb(skb); + + if (skbn != NULL) { + skb_queue_tail(&loopback_queue, skbn); + + if (!rose_loopback_running()) + rose_set_loopback_timer(); + } + + return 1; +} + +static void rose_loopback_timer(unsigned long); + +static void rose_set_loopback_timer(void) +{ + del_timer(&loopback_timer); + + loopback_timer.data = 0; + loopback_timer.function = &rose_loopback_timer; + loopback_timer.expires = jiffies + 10; + + add_timer(&loopback_timer); +} + +static void rose_loopback_timer(unsigned long param) +{ + struct sk_buff *skb; + struct net_device *dev; + rose_address *dest; + struct sock *sk; + unsigned short frametype; + unsigned int lci_i, lci_o; + + while ((skb = skb_dequeue(&loopback_queue)) != NULL) { + lci_i = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF); + frametype = skb->data[2]; + dest = (rose_address *)(skb->data + 4); + lci_o = 0xFFF - lci_i; + + skb->h.raw = skb->data; + + if ((sk = rose_find_socket(lci_o, rose_loopback_neigh)) != NULL) { + if (rose_process_rx_frame(sk, skb) == 0) + kfree_skb(skb); + continue; + } + + if (frametype == ROSE_CALL_REQUEST) { + if ((dev = rose_dev_get(dest)) != NULL) { + if (rose_rx_call_request(skb, dev, rose_loopback_neigh, lci_o) == 0) + kfree_skb(skb); + } else { + kfree_skb(skb); + } + } else { + kfree_skb(skb); + } + } +} + +void __exit rose_loopback_clear(void) +{ + struct sk_buff *skb; + + del_timer(&loopback_timer); + + while ((skb = skb_dequeue(&loopback_queue)) != NULL) { + skb->sk = NULL; + kfree_skb(skb); + } +} |