diff options
Diffstat (limited to 'packages/linux/nslu2-kernel/2.6')
| -rw-r--r-- | packages/linux/nslu2-kernel/2.6/91-maclist.patch | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/packages/linux/nslu2-kernel/2.6/91-maclist.patch b/packages/linux/nslu2-kernel/2.6/91-maclist.patch new file mode 100644 index 0000000000..27af1ea639 --- /dev/null +++ b/packages/linux/nslu2-kernel/2.6/91-maclist.patch @@ -0,0 +1,377 @@ +--- linux-2.6.15/include/net/maclist.h 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/include/net/maclist.h 1970-01-01 00:00:00.000000000 +0000 +@@ -0,0 +1,23 @@ ++#ifndef _MACLIST_H ++#define _MACLIST_H 1 ++/* ++ * Interfaces to the MAC repository ++ */ ++/* ++ * Add a single entry, returns 0 on success else an error ++ * code. Must *not* be called from an interrupt handler. ++ */ ++extern int maclist_add(const u8 id_to_add[6]); ++ ++/* ++ * Return the current entry count (valid in any context). ++ */ ++extern int maclist_count(void); ++ ++/* ++ * Return the ID from the n'th entry (valid in any context), ++ * returns 0 on success, -EINVAL if 'n' is out of range. ++ */ ++extern int maclist_read(u8 (*buffer_for_id)[6], int index_of_id_to_return); ++ ++#endif /*_MACLIST_H*/ +--- linux-2.6.15/drivers/net/maclist.c 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/drivers/net/maclist.c 1970-01-01 00:00:00.000000000 +0000 +@@ -0,0 +1,314 @@ ++/* ++ * drivers/net/maclist.c ++ * ++ * a simple driver to remember ethernet MAC values ++ * ++ * Some Ethernet hardware implementations have no built-in ++ * storage for allocated MAC values - an example is the Intel ++ * IXP420 chip which has support for Ethernet but no defined ++ * way of storing allocated MAC values. With such hardware ++ * different board level implementations store the allocated ++ * MAC (or MACs) in different ways. Rather than put board ++ * level code into a specific Ethernet driver this driver ++ * provides a generally accessible repository for the MACs ++ * which can be written by board level code and read by the ++ * driver. ++ * ++ * The implementation also allows user level programs to ++ * access the MAC information in /proc/net/maclist. This is ++ * useful as it allows user space code to use the MAC if it ++ * is not used by a built-in driver. ++ * ++ * Copyright (C) 2005 John Bowler ++ * Author: John Bowler <jbowler@acm.org> ++ * Maintainers: http://www.nslu2-linux.org/ ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * version 2 as published by the Free Software Foundation. ++ * ++ * External interfaces: ++ * Interfaces to linux kernel (and modules) ++ * maclist_add: add a single MAC ++ * maclist_count: total number of MACs stored ++ * maclist_read: read a MAC 0..(maclist_count-1) ++ */ ++#include <linux/module.h> ++#include <linux/moduleparam.h> ++#include <linux/etherdevice.h> ++#include <linux/proc_fs.h> ++#include <linux/errno.h> ++ ++#include <net/maclist.h> ++ ++#define MACLIST_NAME "maclist" ++ ++MODULE_AUTHOR("John Bowler <jbowler@acm.org>"); ++MODULE_DESCRIPTION("MAC list repository"); ++MODULE_LICENSE("GPL"); ++ ++typedef struct maclist_entry { ++ struct maclist_entry *next; /* Linked list, first first */ ++ u8 id[6]; /* 6 byte Ethernet MAC */ ++} maclist_entry_t; ++ ++/* Access to this list is possible at any time - entries in ++ * the list are never destroyed. Modification of the list is ++ * safe only from the init code (i.e. modification must be ++ * single threaded), but read from an interrupt at the same ++ * time is possible and safe. ++ */ ++static maclist_entry_t *maclist_list = 0; ++ ++/* ++ * External interfaces. ++ * ++ * Add a single entry, returns 0 on success else an error ++ * code. Must be single threaded. ++ */ ++int maclist_add(const u8 new_id[6]) { ++ maclist_entry_t *new_entry, **tail; ++ ++ if (new_id == 0 || !is_valid_ether_addr(new_id)) { ++ printk(KERN_ERR MACLIST_NAME ": invalid ethernet address\n"); ++ return -EINVAL; ++ } ++ new_entry = kmalloc(sizeof *new_entry, GFP_KERNEL); ++ if (new_entry == 0) ++ return -ENOMEM; ++ new_entry->next = 0; ++ memcpy(new_entry->id, new_id, sizeof new_entry->id); ++ ++ tail = &maclist_list; ++ while (*tail != 0) ++ tail = &(*tail)->next; ++ *tail = new_entry; ++ return 0; ++} ++EXPORT_SYMBOL(maclist_add); ++ ++/* ++ * Return the current entry count (valid in any context). ++ */ ++int maclist_count(void) { ++ maclist_entry_t *tail = maclist_list; ++ int count = 0; ++ ++ while (tail != 0) { ++ tail = tail->next; ++ ++count; ++ } ++ ++ return count; ++} ++EXPORT_SYMBOL(maclist_count); ++ ++/* ++ * Return the ID from the n'th entry (valid in any context), ++ * returns 0 on success, -EINVAL if 'n' is out of range. ++ */ ++int maclist_read(u8 (*id)[6], int n) { ++ maclist_entry_t *entry = maclist_list; ++ ++ while (n > 0 && entry != 0) { ++ --n; ++ entry = entry->next; ++ } ++ ++ if (n == 0 && entry != 0) { ++ memcpy(id, entry->id, sizeof *id); ++ return 0; ++ } ++ ++ printk(KERN_ERR MACLIST_NAME ": id does not exist\n"); ++ return -EINVAL; ++} ++EXPORT_SYMBOL(maclist_read); ++ ++/* ++ * Parameter parsing. The option string is a list of MAC ++ * addresses, comma separated. (The parsing really should ++ * be somewhere central...) ++ */ ++static int __init maclist_setup(char *param) { ++ int bytes = 0, seen_a_digit = 0; ++ u8 id[6]; ++ ++ memset(id, 0, sizeof id); ++ ++ if (param) do { ++ int digit = -1; ++ switch (*param) { ++ case '0': digit = 0; break; ++ case '1': digit = 1; break; ++ case '2': digit = 2; break; ++ case '3': digit = 3; break; ++ case '4': digit = 4; break; ++ case '5': digit = 5; break; ++ case '6': digit = 6; break; ++ case '7': digit = 7; break; ++ case '8': digit = 8; break; ++ case '9': digit = 9; break; ++ case 'a': case 'A': digit = 10; break; ++ case 'b': case 'B': digit = 11; break; ++ case 'c': case 'C': digit = 12; break; ++ case 'd': case 'D': digit = 13; break; ++ case 'e': case 'E': digit = 14; break; ++ case 'f': case 'F': digit = 15; break; ++ case ':': ++ if (seen_a_digit) ++ bytes = (bytes+1) & ~1; ++ else ++ bytes += 2; /* i.e. ff::ff is ff:00:ff */ ++ seen_a_digit = 0; ++ break; ++ case 0: ++ if (bytes == 0) /* nothing new seen so far */ ++ return 0; ++ /*fall through*/ ++ case ',': case ';': ++ if (bytes > 0) ++ bytes = 12; /* i.e. all trailing bytes 0 */ ++ break; ++ default: ++ printk(KERN_ERR MACLIST_NAME ": invalid character <%c[%d]>\n", ++ *param, *param); ++ return -EINVAL; ++ } ++ ++ if (digit >= 0) { ++ id[bytes>>1] = (id[bytes>>1] << 4) + digit; break; ++ ++bytes; ++ seen_a_digit = 1; ++ } ++ ++ if (bytes >= 12) { ++ int rc = maclist_add(id); ++ if (rc) ++ return rc; ++ bytes = 0; ++ seen_a_digit = 0; ++ memset(id, 0, sizeof id); ++ if (*param == 0) ++ return 0; ++ } ++ ++param; ++ } while (1); ++ ++ return 0; ++} ++ ++/* ++ * procfs support, if compiled in. ++ */ ++#ifdef CONFIG_PROC_FS ++/* ++ * Character device read ++ */ ++static int maclist_getchar(off_t n) { ++ static char xdigit[16] = "0123456789abcdef"; ++ maclist_entry_t *head = maclist_list; ++ int b; ++ ++ do { ++ if (head == 0) ++ return -1; ++ if (n < 18) ++ break; ++ head = head->next; ++ n -= 18; ++ } while (1); ++ ++ if (n == 17) ++ return '\n'; ++ ++ b = n/3; ++ switch (n - b*3) { ++ case 0: return xdigit[head->id[b] >> 4]; ++ case 1: return xdigit[head->id[b] & 0xf]; ++ default: return ':'; ++ } ++} ++ ++/* ++ * The extensively undocumented proc_read_t callback is implemented here. ++ * Go look in fs/proc/generic.c: ++ * ++ * Prototype: ++ * int f(char *buffer, char **start, off_t offset, ++ * int count, int *peof, void *dat) ++ * ++ * Assume that the buffer is "count" bytes in size. ++ * ++ * 2) Set *start = an address within the buffer. ++ * Put the data of the requested offset at *start. ++ * Return the number of bytes of data placed there. ++ * If this number is greater than zero and you ++ * didn't signal eof and the reader is prepared to ++ * take more data you will be called again with the ++ * requested offset advanced by the number of bytes ++ * absorbed. ++ */ ++static int maclist_proc_read(char *buffer, char **start, off_t offset, ++ int count, int *peof, void *dat) { ++ int total; ++ ++ *start = buffer; ++ total = 0; ++ ++ while (total < count) { ++ int ch = maclist_getchar(offset++); ++ if (ch == -1) { ++ *peof = 1; ++ break; ++ } ++ *buffer++ = ch; ++ ++total; ++ } ++ ++ return total; ++} ++#endif ++ ++/* ++ * Finally, the init/exit functions. ++ */ ++static void __exit maclist_exit(void) ++{ ++ maclist_entry_t *list; ++ ++ remove_proc_entry(MACLIST_NAME, proc_net); ++ ++ list = maclist_list; ++ maclist_list = 0; ++ ++ while (list != 0) { ++ maclist_entry_t *head = list; ++ list = head->next; ++ kfree(head); ++ } ++} ++ ++#ifdef MODULE ++static char ids[256]; ++module_param_string(ids, ids, sizeof ids, 0); ++MODULE_PARM_DESC(ids, "comma separated list of MAC ids\n"); ++#else ++__setup("maclist_ids=", maclist_setup); ++#endif ++ ++static int __init maclist_init(void) ++{ ++# ifdef MODULE ++ if (ids[0]) ++ maclist_setup(ids); ++# endif ++ ++ /* Ignore failure, the module will still work. */ ++ (void)create_proc_read_entry(MACLIST_NAME, S_IRUGO, proc_net, maclist_proc_read, NULL); ++ ++ return 0; ++} ++ ++module_init(maclist_init); ++module_exit(maclist_exit); +--- linux-2.6.15/drivers/net/Makefile 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/drivers/net/Makefile 1970-01-01 00:00:00.000000000 +0000 +@@ -70,6 +70,7 @@ obj-$(CONFIG_RIONET) += rionet.o + # end link order section + # + ++obj-$(CONFIG_MACLIST) += maclist.o + obj-$(CONFIG_MII) += mii.o + obj-$(CONFIG_PHYLIB) += phy/ + +--- linux-2.6.15/drivers/net/Kconfig 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/drivers/net/Kconfig 1970-01-01 00:00:00.000000000 +0000 +@@ -166,6 +166,21 @@ config NET_ETHERNET + kernel: saying N will just cause the configurator to skip all + the questions about Ethernet network cards. If unsure, say N. + ++config MACLIST ++ tristate "Ethernet MAC repository" ++ depends on NET_ETHERNET ++ help ++ Some ethernet controllers have no built-in way of obtaining an ++ appropriate Ethernet MAC address. Such controllers have to be ++ initialised in a board-specific way, depending on how the allocated ++ MAC is stored. The MAC repository provides a set of APIs and a ++ proc entry (/proc/net/maclist) to store MAC values from the board ++ so that such drivers can obtain a MAC address without board-specific ++ code. You do not need to enable this device - it will be selected ++ automatically by any device which requires it. It is only useful ++ to enable it manually when building a device driver independently ++ of the kernel build. ++ + config MII + tristate "Generic Media Independent Interface device support" + depends on NET_ETHERNET |