^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) * n_tracerouter.c - Trace data router through tty space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) Intel 2011
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^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) * This trace router uses the Linux line discipline framework to route
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * trace data coming from a HW Modem to a PTI (Parallel Trace Module) port.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * The solution is not specific to a HW modem and this line disciple can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * be used to route any stream of data in kernel space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * This is part of a solution for the P1149.7, compact JTAG, standard.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/tty_ldisc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/bug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include "n_tracesink.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * Other ldisc drivers use 65536 which basically means,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * 'I can always accept 64k' and flow control is off.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * This number is deemed appropriate for this driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define RECEIVE_ROOM 65536
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define DRIVERNAME "n_tracerouter"
^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) * struct to hold private configuration data for this ldisc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * opencalled is used to hold if this ldisc has been opened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * kref_tty holds the tty reference the ldisc sits on top of.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct tracerouter_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u8 opencalled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct tty_struct *kref_tty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static struct tracerouter_data *tr_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* lock for when tty reference is being used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static DEFINE_MUTEX(routelock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * n_tracerouter_open() - Called when a tty is opened by a SW entity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * @tty: terminal device to the ldisc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * Return:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * 0 for success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Caveats: This should only be opened one time per SW entity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static int n_tracerouter_open(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int retval = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) mutex_lock(&routelock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) if (tr_data->opencalled == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) tr_data->kref_tty = tty_kref_get(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (tr_data->kref_tty == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) retval = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) tr_data->opencalled = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) tty->disc_data = tr_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) tty->receive_room = RECEIVE_ROOM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) tty_driver_flush_buffer(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) mutex_unlock(&routelock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * n_tracerouter_close() - close connection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * @tty: terminal device to the ldisc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * Called when a software entity wants to close a connection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static void n_tracerouter_close(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct tracerouter_data *tptr = tty->disc_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) mutex_lock(&routelock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) WARN_ON(tptr->kref_tty != tr_data->kref_tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) tty_driver_flush_buffer(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) tty_kref_put(tr_data->kref_tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) tr_data->kref_tty = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) tr_data->opencalled = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) tty->disc_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) mutex_unlock(&routelock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * n_tracerouter_read() - read request from user space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * @tty: terminal device passed into the ldisc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * @file: pointer to open file object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * @buf: pointer to the data buffer that gets eventually returned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * @nr: number of bytes of the data buffer that is returned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * function that allows read() functionality in userspace. By default if this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * is not implemented it returns -EIO. This module is functioning like a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * router via n_tracerouter_receivebuf(), and there is no real requirement
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * to implement this function. However, an error return value other than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * -EIO should be used just to show that there was an intent not to have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * this function implemented. Return value based on read() man pages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * Return:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * -EINVAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static ssize_t n_tracerouter_read(struct tty_struct *tty, struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) unsigned char *buf, size_t nr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) void **cookie, unsigned long offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * n_tracerouter_write() - Function that allows write() in userspace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * @tty: terminal device passed into the ldisc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * @file: pointer to open file object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * @buf: pointer to the data buffer that gets eventually returned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * @nr: number of bytes of the data buffer that is returned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * By default if this is not implemented, it returns -EIO.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * This should not be implemented, ever, because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * 1. this driver is functioning like a router via
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * n_tracerouter_receivebuf()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * 2. No writes to HW will ever go through this line discpline driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * However, an error return value other than -EIO should be used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * just to show that there was an intent not to have this function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * implemented. Return value based on write() man pages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * Return:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * -EINVAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static ssize_t n_tracerouter_write(struct tty_struct *tty, struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) const unsigned char *buf, size_t nr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^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) * n_tracerouter_receivebuf() - Routing function for driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * @tty: terminal device passed into the ldisc. It's assumed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * tty will never be NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * @cp: buffer, block of characters to be eventually read by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * someone, somewhere (user read() call or some kernel function).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * @fp: flag buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * @count: number of characters (aka, bytes) in cp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * This function takes the input buffer, cp, and passes it to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * an external API function for processing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static void n_tracerouter_receivebuf(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) const unsigned char *cp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) char *fp, int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) mutex_lock(&routelock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) n_tracesink_datadrain((u8 *) cp, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) mutex_unlock(&routelock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * Flush buffer is not impelemented as the ldisc has no internal buffering
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * so the tty_driver_flush_buffer() is sufficient for this driver's needs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static struct tty_ldisc_ops tty_ptirouter_ldisc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) .magic = TTY_LDISC_MAGIC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) .name = DRIVERNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .open = n_tracerouter_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .close = n_tracerouter_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .read = n_tracerouter_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) .write = n_tracerouter_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .receive_buf = n_tracerouter_receivebuf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * n_tracerouter_init - module initialisation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * Registers this module as a line discipline driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * Return:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * 0 for success, any other value error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) static int __init n_tracerouter_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) tr_data = kzalloc(sizeof(struct tracerouter_data), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (tr_data == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) /* Note N_TRACEROUTER is defined in linux/tty.h */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) retval = tty_register_ldisc(N_TRACEROUTER, &tty_ptirouter_ldisc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) pr_err("%s: Registration failed: %d\n", __func__, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) kfree(tr_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * n_tracerouter_exit - module unload
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) * Removes this module as a line discipline driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static void __exit n_tracerouter_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) int retval = tty_unregister_ldisc(N_TRACEROUTER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) pr_err("%s: Unregistration failed: %d\n", __func__, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) kfree(tr_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) module_init(n_tracerouter_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) module_exit(n_tracerouter_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) MODULE_AUTHOR("Jay Freyensee");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) MODULE_ALIAS_LDISC(N_TRACEROUTER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) MODULE_DESCRIPTION("Trace router ldisc driver");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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