^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) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * James Leu (jleu@mindspring.net).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2001 by various other people who didn't put their name here.
^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) #include <stdint.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <sys/socket.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <sys/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <sys/un.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "daemon.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <net_user.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <os.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <um_malloc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) enum request_type { REQ_NEW_CONTROL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define SWITCH_MAGIC 0xfeedface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct request_v3 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) uint32_t magic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) uint32_t version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) enum request_type type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct sockaddr_un sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static struct sockaddr_un *new_addr(void *name, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct sockaddr_un *sun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) sun = uml_kmalloc(sizeof(struct sockaddr_un), UM_GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) if (sun == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) printk(UM_KERN_ERR "new_addr: allocation of sockaddr_un "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) "failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) sun->sun_family = AF_UNIX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) memcpy(sun->sun_path, name, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return sun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static int connect_to_switch(struct daemon_data *pri)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct sockaddr_un *ctl_addr = pri->ctl_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct sockaddr_un *local_addr = pri->local_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct sockaddr_un *sun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct request_v3 req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int fd, n, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) pri->control = socket(AF_UNIX, SOCK_STREAM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (pri->control < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) printk(UM_KERN_ERR "daemon_open : control socket failed, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) "errno = %d\n", -err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (connect(pri->control, (struct sockaddr *) ctl_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) sizeof(*ctl_addr)) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) printk(UM_KERN_ERR "daemon_open : control connect failed, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) "errno = %d\n", -err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) fd = socket(AF_UNIX, SOCK_DGRAM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if (fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) printk(UM_KERN_ERR "daemon_open : data socket failed, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) "errno = %d\n", -err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (bind(fd, (struct sockaddr *) local_addr, sizeof(*local_addr)) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) err = -errno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) printk(UM_KERN_ERR "daemon_open : data bind failed, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) "errno = %d\n", -err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) goto out_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) sun = uml_kmalloc(sizeof(struct sockaddr_un), UM_GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (sun == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) printk(UM_KERN_ERR "new_addr: allocation of sockaddr_un "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) "failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) goto out_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) req.magic = SWITCH_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) req.version = SWITCH_VERSION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) req.type = REQ_NEW_CONTROL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) req.sock = *local_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) n = write(pri->control, &req, sizeof(req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (n != sizeof(req)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) printk(UM_KERN_ERR "daemon_open : control setup request "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) "failed, err = %d\n", -errno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) err = -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) goto out_free;
^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) n = read(pri->control, sun, sizeof(*sun));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (n != sizeof(*sun)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) printk(UM_KERN_ERR "daemon_open : read of data socket failed, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) "err = %d\n", -errno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) err = -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) pri->data_addr = sun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) kfree(sun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) out_close:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) close(pri->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static int daemon_user_init(void *data, void *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct daemon_data *pri = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct timeval tv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) char zero;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) int pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) int usecs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) } name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (!strcmp(pri->sock_type, "unix"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) pri->ctl_addr = new_addr(pri->ctl_sock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) strlen(pri->ctl_sock) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) name.zero = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) name.pid = os_getpid();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) gettimeofday(&tv, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) name.usecs = tv.tv_usec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) pri->local_addr = new_addr(&name, sizeof(name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) pri->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) pri->fd = connect_to_switch(pri);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (pri->fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) kfree(pri->local_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) pri->local_addr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return pri->fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static int daemon_open(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct daemon_data *pri = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return pri->fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static void daemon_remove(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct daemon_data *pri = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) close(pri->fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) pri->fd = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) close(pri->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) pri->control = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) kfree(pri->data_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) pri->data_addr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) kfree(pri->ctl_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) pri->ctl_addr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) kfree(pri->local_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) pri->local_addr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) int daemon_user_write(int fd, void *buf, int len, struct daemon_data *pri)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct sockaddr_un *data_addr = pri->data_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return net_sendto(fd, buf, len, data_addr, sizeof(*data_addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) const struct net_user_info daemon_user_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) .init = daemon_user_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .open = daemon_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) .close = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) .remove = daemon_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .add_address = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .delete_address = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) .mtu = ETH_MAX_PACKET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) .max_packet = ETH_MAX_PACKET + ETH_HEADER_OTHER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) };
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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