59d0ecdbf0
This patch adds two new functions in ethdev api to retrieve current MTU and change MTU of a port. Only .mtu_set function is pmd specific. pmd should update its max_rx_pkt_len if needed. This operation has been implemented for rte_em_pmd, rte_igb_pmd and rte_ixgbe_pmd. Signed-off-by: Samuel Gauthier <samuel.gauthier@6wind.com> Signed-off-by: Ivan Boule <ivan.boule@6wind.com> Signed-off-by: David Marchand <david.marchand@6wind.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
302 lines
9.2 KiB
C
302 lines
9.2 KiB
C
/*-
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _RTE_ETHER_H_
|
|
#define _RTE_ETHER_H_
|
|
|
|
/**
|
|
* @file
|
|
*
|
|
* Ethernet Helpers in RTE
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <rte_memcpy.h>
|
|
#include <rte_random.h>
|
|
|
|
#define ETHER_ADDR_LEN 6 /**< Length of Ethernet address. */
|
|
#define ETHER_TYPE_LEN 2 /**< Length of Ethernet type field. */
|
|
#define ETHER_CRC_LEN 4 /**< Length of Ethernet CRC. */
|
|
#define ETHER_HDR_LEN \
|
|
(ETHER_ADDR_LEN * 2 + ETHER_TYPE_LEN) /**< Length of Ethernet header. */
|
|
#define ETHER_MIN_LEN 64 /**< Minimum frame len, including CRC. */
|
|
#define ETHER_MAX_LEN 1518 /**< Maximum frame len, including CRC. */
|
|
#define ETHER_MTU \
|
|
(ETHER_MAX_LEN - ETHER_HDR_LEN - ETHER_CRC_LEN) /**< Ethernet MTU. */
|
|
|
|
#define ETHER_MAX_VLAN_FRAME_LEN \
|
|
(ETHER_MAX_LEN + 4) /**< Maximum VLAN frame length, including CRC. */
|
|
|
|
#define ETHER_MAX_JUMBO_FRAME_LEN \
|
|
0x3F00 /**< Maximum Jumbo frame length, including CRC. */
|
|
|
|
#define ETHER_MAX_VLAN_ID 4095 /**< Maximum VLAN ID. */
|
|
|
|
#define ETHER_MIN_MTU 68 /**< Minimum MTU for IPv4 packets, see RFC 791. */
|
|
|
|
/**
|
|
* Ethernet address:
|
|
* A universally administered address is uniquely assigned to a device by its
|
|
* manufacturer. The first three octets (in transmission order) contain the
|
|
* Organizationally Unique Identifier (OUI). The following three (MAC-48 and
|
|
* EUI-48) octets are assigned by that organization with the only constraint
|
|
* of uniqueness.
|
|
* A locally administered address is assigned to a device by a network
|
|
* administrator and does not contain OUIs.
|
|
* See http://standards.ieee.org/regauth/groupmac/tutorial.html
|
|
*/
|
|
struct ether_addr {
|
|
uint8_t addr_bytes[ETHER_ADDR_LEN]; /**< Address bytes in transmission order */
|
|
} __attribute__((__packed__));
|
|
|
|
#define ETHER_LOCAL_ADMIN_ADDR 0x02 /**< Locally assigned Eth. address. */
|
|
#define ETHER_GROUP_ADDR 0x01 /**< Multicast or broadcast Eth. address. */
|
|
|
|
/**
|
|
* Check if two Ethernet addresses are the same.
|
|
*
|
|
* @param ea1
|
|
* A pointer to the first ether_addr structure containing
|
|
* the ethernet address.
|
|
* @param ea2
|
|
* A pointer to the second ether_addr structure containing
|
|
* the ethernet address.
|
|
*
|
|
* @return
|
|
* True (1) if the given two ethernet address are the same;
|
|
* False (0) otherwise.
|
|
*/
|
|
static inline int is_same_ether_addr(const struct ether_addr *ea1,
|
|
const struct ether_addr *ea2)
|
|
{
|
|
int i;
|
|
for (i = 0; i < ETHER_ADDR_LEN; i++)
|
|
if (ea1->addr_bytes[i] != ea2->addr_bytes[i])
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Check if an Ethernet address is filled with zeros.
|
|
*
|
|
* @param ea
|
|
* A pointer to a ether_addr structure containing the ethernet address
|
|
* to check.
|
|
* @return
|
|
* True (1) if the given ethernet address is filled with zeros;
|
|
* false (0) otherwise.
|
|
*/
|
|
static inline int is_zero_ether_addr(const struct ether_addr *ea)
|
|
{
|
|
int i;
|
|
for (i = 0; i < ETHER_ADDR_LEN; i++)
|
|
if (ea->addr_bytes[i] != 0x00)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Check if an Ethernet address is a unicast address.
|
|
*
|
|
* @param ea
|
|
* A pointer to a ether_addr structure containing the ethernet address
|
|
* to check.
|
|
* @return
|
|
* True (1) if the given ethernet address is a unicast address;
|
|
* false (0) otherwise.
|
|
*/
|
|
static inline int is_unicast_ether_addr(const struct ether_addr *ea)
|
|
{
|
|
return ((ea->addr_bytes[0] & ETHER_GROUP_ADDR) == 0);
|
|
}
|
|
|
|
/**
|
|
* Check if an Ethernet address is a multicast address.
|
|
*
|
|
* @param ea
|
|
* A pointer to a ether_addr structure containing the ethernet address
|
|
* to check.
|
|
* @return
|
|
* True (1) if the given ethernet address is a multicast address;
|
|
* false (0) otherwise.
|
|
*/
|
|
static inline int is_multicast_ether_addr(const struct ether_addr *ea)
|
|
{
|
|
return (ea->addr_bytes[0] & ETHER_GROUP_ADDR);
|
|
}
|
|
|
|
/**
|
|
* Check if an Ethernet address is a broadcast address.
|
|
*
|
|
* @param ea
|
|
* A pointer to a ether_addr structure containing the ethernet address
|
|
* to check.
|
|
* @return
|
|
* True (1) if the given ethernet address is a broadcast address;
|
|
* false (0) otherwise.
|
|
*/
|
|
static inline int is_broadcast_ether_addr(const struct ether_addr *ea)
|
|
{
|
|
const uint16_t *ea_words = (const uint16_t *)ea;
|
|
|
|
return (ea_words[0] == 0xFFFF && ea_words[1] == 0xFFFF &&
|
|
ea_words[2] == 0xFFFF);
|
|
}
|
|
|
|
/**
|
|
* Check if an Ethernet address is a universally assigned address.
|
|
*
|
|
* @param ea
|
|
* A pointer to a ether_addr structure containing the ethernet address
|
|
* to check.
|
|
* @return
|
|
* True (1) if the given ethernet address is a universally assigned address;
|
|
* false (0) otherwise.
|
|
*/
|
|
static inline int is_universal_ether_addr(const struct ether_addr *ea)
|
|
{
|
|
return ((ea->addr_bytes[0] & ETHER_LOCAL_ADMIN_ADDR) == 0);
|
|
}
|
|
|
|
/**
|
|
* Check if an Ethernet address is a locally assigned address.
|
|
*
|
|
* @param ea
|
|
* A pointer to a ether_addr structure containing the ethernet address
|
|
* to check.
|
|
* @return
|
|
* True (1) if the given ethernet address is a locally assigned address;
|
|
* false (0) otherwise.
|
|
*/
|
|
static inline int is_local_admin_ether_addr(const struct ether_addr *ea)
|
|
{
|
|
return ((ea->addr_bytes[0] & ETHER_LOCAL_ADMIN_ADDR) == 1);
|
|
}
|
|
|
|
/**
|
|
* Check if an Ethernet address is a valid address. Checks that the address is a
|
|
* unicast address and is not filled with zeros.
|
|
*
|
|
* @param ea
|
|
* A pointer to a ether_addr structure containing the ethernet address
|
|
* to check.
|
|
* @return
|
|
* True (1) if the given ethernet address is valid;
|
|
* false (0) otherwise.
|
|
*/
|
|
static inline int is_valid_assigned_ether_addr(const struct ether_addr *ea)
|
|
{
|
|
return (is_unicast_ether_addr(ea) && (! is_zero_ether_addr(ea)));
|
|
}
|
|
|
|
/**
|
|
* Generate a random Ethernet address that is locally administered
|
|
* and not multicast.
|
|
* @param addr
|
|
* A pointer to Ethernet address.
|
|
*/
|
|
static inline void eth_random_addr(uint8_t *addr)
|
|
{
|
|
uint64_t rand = rte_rand();
|
|
uint8_t *p = (uint8_t*)&rand;
|
|
|
|
rte_memcpy(addr, p, ETHER_ADDR_LEN);
|
|
addr[0] &= ~ETHER_GROUP_ADDR; /* clear multicast bit */
|
|
addr[0] |= ETHER_LOCAL_ADMIN_ADDR; /* set local assignment bit */
|
|
}
|
|
|
|
/**
|
|
* Fast copy an Ethernet address.
|
|
*
|
|
* @param ea_from
|
|
* A pointer to a ether_addr structure holding the Ethernet address to copy.
|
|
* @param ea_to
|
|
* A pointer to a ether_addr structure where to copy the Ethernet address.
|
|
*/
|
|
static inline void ether_addr_copy(const struct ether_addr *ea_from,
|
|
struct ether_addr *ea_to)
|
|
{
|
|
#ifdef __INTEL_COMPILER
|
|
uint16_t *from_words = (uint16_t *)(ea_from->addr_bytes);
|
|
uint16_t *to_words = (uint16_t *)(ea_to->addr_bytes);
|
|
|
|
to_words[0] = from_words[0];
|
|
to_words[1] = from_words[1];
|
|
to_words[2] = from_words[2];
|
|
#else
|
|
/*
|
|
* Use the common way, because of a strange gcc warning.
|
|
*/
|
|
*ea_to = *ea_from;
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* Ethernet header: Contains the destination address, source address
|
|
* and frame type.
|
|
*/
|
|
struct ether_hdr {
|
|
struct ether_addr d_addr; /**< Destination address. */
|
|
struct ether_addr s_addr; /**< Source address. */
|
|
uint16_t ether_type; /**< Frame type. */
|
|
} __attribute__((__packed__));
|
|
|
|
/**
|
|
* Ethernet VLAN Header.
|
|
* Contains the 16-bit VLAN Tag Control Identifier and the Ethernet type
|
|
* of the encapsulated frame.
|
|
*/
|
|
struct vlan_hdr {
|
|
uint16_t vlan_tci; /**< Priority (3) + CFI (1) + Identifier Code (12) */
|
|
uint16_t eth_proto;/**< Ethernet type of encapsulated frame. */
|
|
} __attribute__((__packed__));
|
|
|
|
/* Ethernet frame types */
|
|
#define ETHER_TYPE_IPv4 0x0800 /**< IPv4 Protocol. */
|
|
#define ETHER_TYPE_IPv6 0x86DD /**< IPv6 Protocol. */
|
|
#define ETHER_TYPE_ARP 0x0806 /**< Arp Protocol. */
|
|
#define ETHER_TYPE_RARP 0x8035 /**< Reverse Arp Protocol. */
|
|
#define ETHER_TYPE_VLAN 0x8100 /**< IEEE 802.1Q VLAN tagging. */
|
|
#define ETHER_TYPE_1588 0x88F7 /**< IEEE 802.1AS 1588 Precise Time Protocol. */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _RTE_ETHER_H_ */
|