From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- arch/um/drivers/pcap_kern.c | 113 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 113 insertions(+) create mode 100644 arch/um/drivers/pcap_kern.c (limited to 'arch/um/drivers/pcap_kern.c') diff --git a/arch/um/drivers/pcap_kern.c b/arch/um/drivers/pcap_kern.c new file mode 100644 index 000000000..cfe4cb176 --- /dev/null +++ b/arch/um/drivers/pcap_kern.c @@ -0,0 +1,113 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + */ + +#include +#include +#include +#include "pcap_user.h" + +struct pcap_init { + char *host_if; + int promisc; + int optimize; + char *filter; +}; + +void pcap_init(struct net_device *dev, void *data) +{ + struct uml_net_private *pri; + struct pcap_data *ppri; + struct pcap_init *init = data; + + pri = netdev_priv(dev); + ppri = (struct pcap_data *) pri->user; + ppri->host_if = init->host_if; + ppri->promisc = init->promisc; + ppri->optimize = init->optimize; + ppri->filter = init->filter; + + printk("pcap backend, host interface %s\n", ppri->host_if); +} + +static int pcap_read(int fd, struct sk_buff *skb, struct uml_net_private *lp) +{ + return pcap_user_read(fd, skb_mac_header(skb), + skb->dev->mtu + ETH_HEADER_OTHER, + (struct pcap_data *) &lp->user); +} + +static int pcap_write(int fd, struct sk_buff *skb, struct uml_net_private *lp) +{ + return -EPERM; +} + +static const struct net_kern_info pcap_kern_info = { + .init = pcap_init, + .protocol = eth_protocol, + .read = pcap_read, + .write = pcap_write, +}; + +int pcap_setup(char *str, char **mac_out, void *data) +{ + struct pcap_init *init = data; + char *remain, *host_if = NULL, *options[2] = { NULL, NULL }; + int i; + + *init = ((struct pcap_init) + { .host_if = "eth0", + .promisc = 1, + .optimize = 0, + .filter = NULL }); + + remain = split_if_spec(str, &host_if, &init->filter, + &options[0], &options[1], mac_out, NULL); + if (remain != NULL) { + printk(KERN_ERR "pcap_setup - Extra garbage on " + "specification : '%s'\n", remain); + return 0; + } + + if (host_if != NULL) + init->host_if = host_if; + + for (i = 0; i < ARRAY_SIZE(options); i++) { + if (options[i] == NULL) + continue; + if (!strcmp(options[i], "promisc")) + init->promisc = 1; + else if (!strcmp(options[i], "nopromisc")) + init->promisc = 0; + else if (!strcmp(options[i], "optimize")) + init->optimize = 1; + else if (!strcmp(options[i], "nooptimize")) + init->optimize = 0; + else { + printk(KERN_ERR "pcap_setup : bad option - '%s'\n", + options[i]); + return 0; + } + } + + return 1; +} + +static struct transport pcap_transport = { + .list = LIST_HEAD_INIT(pcap_transport.list), + .name = "pcap", + .setup = pcap_setup, + .user = &pcap_user_info, + .kern = &pcap_kern_info, + .private_size = sizeof(struct pcap_data), + .setup_size = sizeof(struct pcap_init), +}; + +static int register_pcap(void) +{ + register_transport(&pcap_transport); + return 0; +} + +late_initcall(register_pcap); -- cgit v1.2.3