^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2007 Luca Bigliardi (shammash@artha.org).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Transport usage:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * ethN=vde,<vde_switch>,<mac addr>,<port>,<group>,<mode>,<description>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <net_kern.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <net_user.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "vde.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) static void vde_init(struct net_device *dev, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct vde_init *init = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct uml_net_private *pri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct vde_data *vpri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) pri = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) vpri = (struct vde_data *) pri->user;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) vpri->vde_switch = init->vde_switch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) vpri->descr = init->descr ? init->descr : "UML vde_transport";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) vpri->args = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) vpri->conn = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) vpri->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) printk("vde backend - %s, ", vpri->vde_switch ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) vpri->vde_switch : "(default socket)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) vde_init_libstuff(vpri, init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) printk("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static int vde_read(int fd, struct sk_buff *skb, struct uml_net_private *lp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct vde_data *pri = (struct vde_data *) &lp->user;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) if (pri->conn != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return vde_user_read(pri->conn, skb_mac_header(skb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) skb->dev->mtu + ETH_HEADER_OTHER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) printk(KERN_ERR "vde_read - we have no VDECONN to read from");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return -EBADF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static int vde_write(int fd, struct sk_buff *skb, struct uml_net_private *lp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct vde_data *pri = (struct vde_data *) &lp->user;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (pri->conn != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return vde_user_write((void *)pri->conn, skb->data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) printk(KERN_ERR "vde_write - we have no VDECONN to write to");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return -EBADF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static const struct net_kern_info vde_kern_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .init = vde_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) .protocol = eth_protocol,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .read = vde_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .write = vde_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static int vde_setup(char *str, char **mac_out, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct vde_init *init = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) char *remain, *port_str = NULL, *mode_str = NULL, *last;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) *init = ((struct vde_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) { .vde_switch = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .descr = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .port = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .group = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .mode = 0 });
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) remain = split_if_spec(str, &init->vde_switch, mac_out, &port_str,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) &init->group, &mode_str, &init->descr, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (remain != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) printk(KERN_WARNING "vde_setup - Ignoring extra data :"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) "'%s'\n", remain);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (port_str != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) init->port = simple_strtoul(port_str, &last, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if ((*last != '\0') || (last == port_str)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) printk(KERN_ERR "vde_setup - Bad port : '%s'\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) port_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (mode_str != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) init->mode = simple_strtoul(mode_str, &last, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if ((*last != '\0') || (last == mode_str)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) printk(KERN_ERR "vde_setup - Bad mode : '%s'\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) mode_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) printk(KERN_INFO "Configured vde device: %s\n", init->vde_switch ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) init->vde_switch : "(default socket)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static struct transport vde_transport = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .list = LIST_HEAD_INIT(vde_transport.list),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .name = "vde",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .setup = vde_setup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .user = &vde_user_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .kern = &vde_kern_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .private_size = sizeof(struct vde_data),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .setup_size = sizeof(struct vde_init),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static int register_vde(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) register_transport(&vde_transport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) late_initcall(register_vde);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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