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authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 13:25:22 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 13:25:22 +0200
commit8a9ea3237e7eb5c25f09e429ad242ae5a3d5ea22 (patch)
treea0a63398a9983667d52cbbbf4e2405b4f22b1d83 /include/linux/can
parent1be025d3cb40cd295123af2c394f7229ef9b30ca (diff)
parent8b3408f8ee994973869d8ba32c5bf482bc4ddca4 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1745 commits) dp83640: free packet queues on remove dp83640: use proper function to free transmit time stamping packets ipv6: Do not use routes from locally generated RAs |PATCH net-next] tg3: add tx_dropped counter be2net: don't create multiple RX/TX rings in multi channel mode be2net: don't create multiple TXQs in BE2 be2net: refactor VF setup/teardown code into be_vf_setup/clear() be2net: add vlan/rx-mode/flow-control config to be_setup() net_sched: cls_flow: use skb_header_pointer() ipv4: avoid useless call of the function check_peer_pmtu TCP: remove TCP_DEBUG net: Fix driver name for mdio-gpio.c ipv4: tcp: fix TOS value in ACK messages sent from TIME_WAIT rtnetlink: Add missing manual netlink notification in dev_change_net_namespaces ipv4: fix ipsec forward performance regression jme: fix irq storm after suspend/resume route: fix ICMP redirect validation net: hold sock reference while processing tx timestamps tcp: md5: add more const attributes Add ethtool -g support to virtio_net ... Fix up conflicts in: - drivers/net/Kconfig: The split-up generated a trivial conflict with removal of a stale reference to Documentation/networking/net-modules.txt. Remove it from the new location instead. - fs/sysfs/dir.c: Fairly nasty conflicts with the sysfs rb-tree usage, conflicting with Eric Biederman's changes for tagged directories.
Diffstat (limited to 'include/linux/can')
-rw-r--r--include/linux/can/Kbuild1
-rw-r--r--include/linux/can/bcm.h3
-rw-r--r--include/linux/can/core.h2
-rw-r--r--include/linux/can/dev.h1
-rw-r--r--include/linux/can/error.h2
-rw-r--r--include/linux/can/gw.h162
-rw-r--r--include/linux/can/netlink.h2
-rw-r--r--include/linux/can/raw.h2
8 files changed, 164 insertions, 11 deletions
diff --git a/include/linux/can/Kbuild b/include/linux/can/Kbuild
index 8cb05aae661c..c62b7f1728f9 100644
--- a/include/linux/can/Kbuild
+++ b/include/linux/can/Kbuild
@@ -1,4 +1,5 @@
header-y += raw.h
header-y += bcm.h
+header-y += gw.h
header-y += error.h
header-y += netlink.h
diff --git a/include/linux/can/bcm.h b/include/linux/can/bcm.h
index 1432b278c52d..3ebe387fea4d 100644
--- a/include/linux/can/bcm.h
+++ b/include/linux/can/bcm.h
@@ -7,14 +7,13 @@
* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
* All rights reserved.
*
- * Send feedback to <socketcan-users@lists.berlios.de>
- *
*/
#ifndef CAN_BCM_H
#define CAN_BCM_H
#include <linux/types.h>
+#include <linux/can.h>
/**
* struct bcm_msg_head - head of messages to/from the broadcast manager
diff --git a/include/linux/can/core.h b/include/linux/can/core.h
index 5ce6b5d62ecc..0ccc1cd28b95 100644
--- a/include/linux/can/core.h
+++ b/include/linux/can/core.h
@@ -8,8 +8,6 @@
* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
* All rights reserved.
*
- * Send feedback to <socketcan-users@lists.berlios.de>
- *
*/
#ifndef CAN_CORE_H
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index cc0bb4961669..a0969fcb72b9 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -8,7 +8,6 @@
*
* Copyright (C) 2008 Wolfgang Grandegger <wg@grandegger.com>
*
- * Send feedback to <socketcan-users@lists.berlios.de>
*/
#ifndef CAN_DEV_H
diff --git a/include/linux/can/error.h b/include/linux/can/error.h
index 5958074302a4..63e855ea6b84 100644
--- a/include/linux/can/error.h
+++ b/include/linux/can/error.h
@@ -7,8 +7,6 @@
* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
* All rights reserved.
*
- * Send feedback to <socketcan-users@lists.berlios.de>
- *
*/
#ifndef CAN_ERROR_H
diff --git a/include/linux/can/gw.h b/include/linux/can/gw.h
new file mode 100644
index 000000000000..8e1db18c3cb6
--- /dev/null
+++ b/include/linux/can/gw.h
@@ -0,0 +1,162 @@
+/*
+ * linux/can/gw.h
+ *
+ * Definitions for CAN frame Gateway/Router/Bridge
+ *
+ * Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
+ * Copyright (c) 2011 Volkswagen Group Electronic Research
+ * All rights reserved.
+ *
+ */
+
+#ifndef CAN_GW_H
+#define CAN_GW_H
+
+#include <linux/types.h>
+#include <linux/can.h>
+
+struct rtcanmsg {
+ __u8 can_family;
+ __u8 gwtype;
+ __u16 flags;
+};
+
+/* CAN gateway types */
+enum {
+ CGW_TYPE_UNSPEC,
+ CGW_TYPE_CAN_CAN, /* CAN->CAN routing */
+ __CGW_TYPE_MAX
+};
+
+#define CGW_TYPE_MAX (__CGW_TYPE_MAX - 1)
+
+/* CAN rtnetlink attribute definitions */
+enum {
+ CGW_UNSPEC,
+ CGW_MOD_AND, /* CAN frame modification binary AND */
+ CGW_MOD_OR, /* CAN frame modification binary OR */
+ CGW_MOD_XOR, /* CAN frame modification binary XOR */
+ CGW_MOD_SET, /* CAN frame modification set alternate values */
+ CGW_CS_XOR, /* set data[] XOR checksum into data[index] */
+ CGW_CS_CRC8, /* set data[] CRC8 checksum into data[index] */
+ CGW_HANDLED, /* number of handled CAN frames */
+ CGW_DROPPED, /* number of dropped CAN frames */
+ CGW_SRC_IF, /* ifindex of source network interface */
+ CGW_DST_IF, /* ifindex of destination network interface */
+ CGW_FILTER, /* specify struct can_filter on source CAN device */
+ __CGW_MAX
+};
+
+#define CGW_MAX (__CGW_MAX - 1)
+
+#define CGW_FLAGS_CAN_ECHO 0x01
+#define CGW_FLAGS_CAN_SRC_TSTAMP 0x02
+
+#define CGW_MOD_FUNCS 4 /* AND OR XOR SET */
+
+/* CAN frame elements that are affected by curr. 3 CAN frame modifications */
+#define CGW_MOD_ID 0x01
+#define CGW_MOD_DLC 0x02
+#define CGW_MOD_DATA 0x04
+
+#define CGW_FRAME_MODS 3 /* ID DLC DATA */
+
+#define MAX_MODFUNCTIONS (CGW_MOD_FUNCS * CGW_FRAME_MODS)
+
+struct cgw_frame_mod {
+ struct can_frame cf;
+ __u8 modtype;
+} __attribute__((packed));
+
+#define CGW_MODATTR_LEN sizeof(struct cgw_frame_mod)
+
+struct cgw_csum_xor {
+ __s8 from_idx;
+ __s8 to_idx;
+ __s8 result_idx;
+ __u8 init_xor_val;
+} __attribute__((packed));
+
+struct cgw_csum_crc8 {
+ __s8 from_idx;
+ __s8 to_idx;
+ __s8 result_idx;
+ __u8 init_crc_val;
+ __u8 final_xor_val;
+ __u8 crctab[256];
+ __u8 profile;
+ __u8 profile_data[20];
+} __attribute__((packed));
+
+/* length of checksum operation parameters. idx = index in CAN frame data[] */
+#define CGW_CS_XOR_LEN sizeof(struct cgw_csum_xor)
+#define CGW_CS_CRC8_LEN sizeof(struct cgw_csum_crc8)
+
+/* CRC8 profiles (compute CRC for additional data elements - see below) */
+enum {
+ CGW_CRC8PRF_UNSPEC,
+ CGW_CRC8PRF_1U8, /* compute one additional u8 value */
+ CGW_CRC8PRF_16U8, /* u8 value table indexed by data[1] & 0xF */
+ CGW_CRC8PRF_SFFID_XOR, /* (can_id & 0xFF) ^ (can_id >> 8 & 0xFF) */
+ __CGW_CRC8PRF_MAX
+};
+
+#define CGW_CRC8PRF_MAX (__CGW_CRC8PRF_MAX - 1)
+
+/*
+ * CAN rtnetlink attribute contents in detail
+ *
+ * CGW_XXX_IF (length 4 bytes):
+ * Sets an interface index for source/destination network interfaces.
+ * For the CAN->CAN gwtype the indices of _two_ CAN interfaces are mandatory.
+ *
+ * CGW_FILTER (length 8 bytes):
+ * Sets a CAN receive filter for the gateway job specified by the
+ * struct can_filter described in include/linux/can.h
+ *
+ * CGW_MOD_XXX (length 17 bytes):
+ * Specifies a modification that's done to a received CAN frame before it is
+ * send out to the destination interface.
+ *
+ * <struct can_frame> data used as operator
+ * <u8> affected CAN frame elements
+ *
+ * CGW_CS_XOR (length 4 bytes):
+ * Set a simple XOR checksum starting with an initial value into
+ * data[result-idx] using data[start-idx] .. data[end-idx]
+ *
+ * The XOR checksum is calculated like this:
+ *
+ * xor = init_xor_val
+ *
+ * for (i = from_idx .. to_idx)
+ * xor ^= can_frame.data[i]
+ *
+ * can_frame.data[ result_idx ] = xor
+ *
+ * CGW_CS_CRC8 (length 282 bytes):
+ * Set a CRC8 value into data[result-idx] using a given 256 byte CRC8 table,
+ * a given initial value and a defined input data[start-idx] .. data[end-idx].
+ * Finally the result value is XOR'ed with the final_xor_val.
+ *
+ * The CRC8 checksum is calculated like this:
+ *
+ * crc = init_crc_val
+ *
+ * for (i = from_idx .. to_idx)
+ * crc = crctab[ crc ^ can_frame.data[i] ]
+ *
+ * can_frame.data[ result_idx ] = crc ^ final_xor_val
+ *
+ * The calculated CRC may contain additional source data elements that can be
+ * defined in the handling of 'checksum profiles' e.g. shown in AUTOSAR specs
+ * like http://www.autosar.org/download/R4.0/AUTOSAR_SWS_E2ELibrary.pdf
+ * E.g. the profile_data[] may contain additional u8 values (called DATA_IDs)
+ * that are used depending on counter values inside the CAN frame data[].
+ * So far only three profiles have been implemented for illustration.
+ *
+ * Remark: In general the attribute data is a linear buffer.
+ * Beware of sending unpacked or aligned structs!
+ */
+
+#endif
diff --git a/include/linux/can/netlink.h b/include/linux/can/netlink.h
index 34542d374dd8..14966ddb7df1 100644
--- a/include/linux/can/netlink.h
+++ b/include/linux/can/netlink.h
@@ -5,8 +5,6 @@
*
* Copyright (c) 2009 Wolfgang Grandegger <wg@grandegger.com>
*
- * Send feedback to <socketcan-users@lists.berlios.de>
- *
*/
#ifndef CAN_NETLINK_H
diff --git a/include/linux/can/raw.h b/include/linux/can/raw.h
index b2a0f87492c5..781f3a3701be 100644
--- a/include/linux/can/raw.h
+++ b/include/linux/can/raw.h
@@ -8,8 +8,6 @@
* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
* All rights reserved.
*
- * Send feedback to <socketcan-users@lists.berlios.de>
- *
*/
#ifndef CAN_RAW_H