diff options
Diffstat (limited to 'arch/um/drivers/mcast_user.c')
| -rw-r--r-- | arch/um/drivers/mcast_user.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/arch/um/drivers/mcast_user.c b/arch/um/drivers/mcast_user.c deleted file mode 100644 index ee19e91568a2..000000000000 --- a/arch/um/drivers/mcast_user.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * user-mode-linux networking multicast transport - * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) - * Copyright (C) 2001 by Harald Welte <laforge@gnumonks.org> - * - * based on the existing uml-networking code, which is - * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and - * James Leu (jleu@mindspring.net). - * Copyright (C) 2001 by various other people who didn't put their name here. - * - * Licensed under the GPL. - * - */ - -#include <unistd.h> -#include <errno.h> -#include <netinet/in.h> -#include "kern_constants.h" -#include "mcast.h" -#include "net_user.h" -#include "um_malloc.h" -#include "user.h" - -static struct sockaddr_in *new_addr(char *addr, unsigned short port) -{ - struct sockaddr_in *sin; - - sin = uml_kmalloc(sizeof(struct sockaddr_in), UM_GFP_KERNEL); - if (sin == NULL) { - printk(UM_KERN_ERR "new_addr: allocation of sockaddr_in " - "failed\n"); - return NULL; - } - sin->sin_family = AF_INET; - sin->sin_addr.s_addr = in_aton(addr); - sin->sin_port = htons(port); - return sin; -} - -static int mcast_user_init(void *data, void *dev) -{ - struct mcast_data *pri = data; - - pri->mcast_addr = new_addr(pri->addr, pri->port); - pri->dev = dev; - return 0; -} - -static void mcast_remove(void *data) -{ - struct mcast_data *pri = data; - - kfree(pri->mcast_addr); - pri->mcast_addr = NULL; -} - -static int mcast_open(void *data) -{ - struct mcast_data *pri = data; - struct sockaddr_in *sin = pri->mcast_addr; - struct ip_mreq mreq; - int fd, yes = 1, err = -EINVAL; - - - if ((sin->sin_addr.s_addr == 0) || (sin->sin_port == 0)) - goto out; - - fd = socket(AF_INET, SOCK_DGRAM, 0); - - if (fd < 0) { - err = -errno; - printk(UM_KERN_ERR "mcast_open : data socket failed, " - "errno = %d\n", errno); - goto out; - } - - if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) { - err = -errno; - printk(UM_KERN_ERR "mcast_open: SO_REUSEADDR failed, " - "errno = %d\n", errno); - goto out_close; - } - - /* set ttl according to config */ - if (setsockopt(fd, SOL_IP, IP_MULTICAST_TTL, &pri->ttl, - sizeof(pri->ttl)) < 0) { - err = -errno; - printk(UM_KERN_ERR "mcast_open: IP_MULTICAST_TTL failed, " - "error = %d\n", errno); - goto out_close; - } - - /* set LOOP, so data does get fed back to local sockets */ - if (setsockopt(fd, SOL_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) { - err = -errno; - printk(UM_KERN_ERR "mcast_open: IP_MULTICAST_LOOP failed, " - "error = %d\n", errno); - goto out_close; - } - - /* bind socket to mcast address */ - if (bind(fd, (struct sockaddr *) sin, sizeof(*sin)) < 0) { - err = -errno; - printk(UM_KERN_ERR "mcast_open : data bind failed, " - "errno = %d\n", errno); - goto out_close; - } - - /* subscribe to the multicast group */ - mreq.imr_multiaddr.s_addr = sin->sin_addr.s_addr; - mreq.imr_interface.s_addr = 0; - if (setsockopt(fd, SOL_IP, IP_ADD_MEMBERSHIP, - &mreq, sizeof(mreq)) < 0) { - err = -errno; - printk(UM_KERN_ERR "mcast_open: IP_ADD_MEMBERSHIP failed, " - "error = %d\n", errno); - printk(UM_KERN_ERR "There appears not to be a multicast-" - "capable network interface on the host.\n"); - printk(UM_KERN_ERR "eth0 should be configured in order to use " - "the multicast transport.\n"); - goto out_close; - } - - return fd; - - out_close: - close(fd); - out: - return err; -} - -static void mcast_close(int fd, void *data) -{ - struct ip_mreq mreq; - struct mcast_data *pri = data; - struct sockaddr_in *sin = pri->mcast_addr; - - mreq.imr_multiaddr.s_addr = sin->sin_addr.s_addr; - mreq.imr_interface.s_addr = 0; - if (setsockopt(fd, SOL_IP, IP_DROP_MEMBERSHIP, - &mreq, sizeof(mreq)) < 0) { - printk(UM_KERN_ERR "mcast_open: IP_DROP_MEMBERSHIP failed, " - "error = %d\n", errno); - } - - close(fd); -} - -int mcast_user_write(int fd, void *buf, int len, struct mcast_data *pri) -{ - struct sockaddr_in *data_addr = pri->mcast_addr; - - return net_sendto(fd, buf, len, data_addr, sizeof(*data_addr)); -} - -const struct net_user_info mcast_user_info = { - .init = mcast_user_init, - .open = mcast_open, - .close = mcast_close, - .remove = mcast_remove, - .add_address = NULL, - .delete_address = NULL, - .mtu = ETH_MAX_PACKET, - .max_packet = ETH_MAX_PACKET + ETH_HEADER_OTHER, -}; |