From: Oleksij Rempel <o.rempel@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Subject: [PATCH v1 5/9] net: port part of if_vlan header from kernel v5.17
Date: Mon, 21 Mar 2022 10:26:02 +0100 [thread overview]
Message-ID: <20220321092606.1459834-6-o.rempel@pengutronix.de> (raw)
In-Reply-To: <20220321092606.1459834-1-o.rempel@pengutronix.de>
This header is needed for SJA11xx switch driver
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
include/linux/if_vlan.h | 56 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
create mode 100644 include/linux/if_vlan.h
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
new file mode 100644
index 0000000000..9e54685064
--- /dev/null
+++ b/include/linux/if_vlan.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * VLAN An implementation of 802.1Q VLAN tagging.
+ *
+ * Authors: Ben Greear <greearb@candelatech.com>
+ */
+#ifndef _LINUX_IF_VLAN_H_
+#define _LINUX_IF_VLAN_H_
+
+#define VLAN_HLEN 4 /* The additional bytes required by VLAN
+ * (in addition to the Ethernet header)
+ */
+#define VLAN_ETH_HLEN 18 /* Total octets in header. */
+#define VLAN_ETH_ZLEN 64 /* Min. octets in frame sans FCS */
+
+/*
+ * According to 802.3ac, the packet can be 4 bytes longer. --Klika Jan
+ */
+#define VLAN_ETH_DATA_LEN 1500 /* Max. octets in payload */
+#define VLAN_ETH_FRAME_LEN 1518 /* Max. octets in frame sans FCS */
+
+#define VLAN_MAX_DEPTH 8 /* Max. number of nested VLAN tags parsed */
+
+/*
+ * struct vlan_hdr - vlan header
+ * @h_vlan_TCI: priority and VLAN ID
+ * @h_vlan_encapsulated_proto: packet type ID or len
+ */
+struct vlan_hdr {
+ __be16 h_vlan_TCI;
+ __be16 h_vlan_encapsulated_proto;
+};
+
+/**
+ * struct vlan_ethhdr - vlan ethernet header (ethhdr + vlan_hdr)
+ * @h_dest: destination ethernet address
+ * @h_source: source ethernet address
+ * @h_vlan_proto: ethernet protocol
+ * @h_vlan_TCI: priority and VLAN ID
+ * @h_vlan_encapsulated_proto: packet type ID or len
+ */
+struct vlan_ethhdr {
+ unsigned char h_dest[ETH_ALEN];
+ unsigned char h_source[ETH_ALEN];
+ __be16 h_vlan_proto;
+ __be16 h_vlan_TCI;
+ __be16 h_vlan_encapsulated_proto;
+};
+
+#define VLAN_PRIO_MASK 0xe000 /* Priority Code Point */
+#define VLAN_PRIO_SHIFT 13
+#define VLAN_CFI_MASK 0x1000 /* Canonical Format Indicator / Drop Eligible Indicator */
+#define VLAN_VID_MASK 0x0fff /* VLAN Identifier */
+#define VLAN_N_VID 4096
+
+#endif /* !(_LINUX_IF_VLAN_H_) */
--
2.30.2
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next prev parent reply other threads:[~2022-03-21 9:28 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-21 9:25 [PATCH v1 0/9] add basic DSA support Oleksij Rempel
2022-03-21 9:25 ` [PATCH v1 1/9] net: add RX preprocessor support Oleksij Rempel
2022-03-21 9:25 ` [PATCH v1 2/9] net: add of_find_eth_device_by_node() function Oleksij Rempel
2022-03-21 9:26 ` [PATCH v1 3/9] net: add DSA framework to support basic switch functionality Oleksij Rempel
2022-03-25 9:37 ` Oleksij Rempel
2022-03-28 10:31 ` Sascha Hauer
2022-03-28 12:23 ` Oleksij Rempel
2022-03-21 9:26 ` [PATCH v1 4/9] driver: add dev_get_priv() helper Oleksij Rempel
2022-03-21 9:26 ` Oleksij Rempel [this message]
2022-03-21 9:26 ` [PATCH v1 6/9] spi: port spi_sync_transfer() function from kernel v5.17 Oleksij Rempel
2022-03-21 9:26 ` [PATCH v1 7/9] net: mdio: add MDIO_DEVAD_NONE define Oleksij Rempel
2022-03-21 9:26 ` [PATCH v1 8/9] net: phy: make sure MDIO bus is probed if we search for the PHY Oleksij Rempel
2022-03-21 9:26 ` [PATCH v1 9/9] net: dsa: add support for SJA11xx switches Oleksij Rempel
2022-03-28 10:40 ` Sascha Hauer
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