/*-
* BSD LICENSE
- *
- * Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ *
+ * 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
+ *
+ * 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
+ *
+ * * 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
+ * * 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
+ * * 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
+ *
+ * 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_
#endif
#include <stdint.h>
+#include <stdio.h>
+
+#include <rte_memcpy.h>
+#include <rte_random.h>
+#include <rte_mbuf.h>
+#include <rte_byteorder.h>
#define ETHER_ADDR_LEN 6 /**< Length of Ethernet address. */
#define ETHER_TYPE_LEN 2 /**< Length of Ethernet type field. */
#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
#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.
*
*/
static inline int is_broadcast_ether_addr(const struct ether_addr *ea)
{
- const uint16_t *ea_words = (const uint16_t *)ea;
+ const unaligned_uint16_t *ea_words = (const unaligned_uint16_t *)ea;
return (ea_words[0] == 0xFFFF && ea_words[1] == 0xFFFF &&
ea_words[2] == 0xFFFF);
*/
static inline int is_local_admin_ether_addr(const struct ether_addr *ea)
{
- return ((ea->addr_bytes[0] & ETHER_LOCAL_ADMIN_ADDR) == 1);
+ return ((ea->addr_bytes[0] & ETHER_LOCAL_ADMIN_ADDR) != 0);
}
/**
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.
*
#endif
}
+#define ETHER_ADDR_FMT_SIZE 18
+/**
+ * Format 48bits Ethernet address in pattern xx:xx:xx:xx:xx:xx.
+ *
+ * @param buf
+ * A pointer to buffer contains the formatted MAC address.
+ * @param size
+ * The format buffer size.
+ * @param eth_addr
+ * A pointer to a ether_addr structure.
+ */
+static inline void
+ether_format_addr(char *buf, uint16_t size,
+ const struct ether_addr *eth_addr)
+{
+ snprintf(buf, size, "%02X:%02X:%02X:%02X:%02X:%02X",
+ eth_addr->addr_bytes[0],
+ eth_addr->addr_bytes[1],
+ eth_addr->addr_bytes[2],
+ eth_addr->addr_bytes[3],
+ eth_addr->addr_bytes[4],
+ eth_addr->addr_bytes[5]);
+}
+
/**
* Ethernet header: Contains the destination address, source address
* and frame type.
uint16_t eth_proto;/**< Ethernet type of encapsulated frame. */
} __attribute__((__packed__));
+/**
+ * VXLAN protocol header.
+ * Contains the 8-bit flag, 24-bit VXLAN Network Identifier and
+ * Reserved fields (24 bits and 8 bits)
+ */
+struct vxlan_hdr {
+ uint32_t vx_flags; /**< flag (8) + Reserved (24). */
+ uint32_t vx_vni; /**< VNI (24) + Reserved (8). */
+} __attribute__((__packed__));
+
/* Ethernet frame types */
#define ETHER_TYPE_IPv4 0x0800 /**< IPv4 Protocol. */
#define ETHER_TYPE_IPv6 0x86DD /**< IPv6 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. */
+#define ETHER_TYPE_SLOW 0x8809 /**< Slow protocols (LACP and Marker). */
+#define ETHER_TYPE_TEB 0x6558 /**< Transparent Ethernet Bridging. */
+
+#define ETHER_VXLAN_HLEN (sizeof(struct udp_hdr) + sizeof(struct vxlan_hdr))
+/**< VXLAN tunnel header length. */
+
+/**
+ * Extract VLAN tag information into mbuf
+ *
+ * Software version of VLAN stripping
+ *
+ * @param m
+ * The packet mbuf.
+ * @return
+ * - 0: Success
+ * - 1: not a vlan packet
+ */
+static inline int rte_vlan_strip(struct rte_mbuf *m)
+{
+ struct ether_hdr *eh
+ = rte_pktmbuf_mtod(m, struct ether_hdr *);
+
+ if (eh->ether_type != rte_cpu_to_be_16(ETHER_TYPE_VLAN))
+ return -1;
+
+ struct vlan_hdr *vh = (struct vlan_hdr *)(eh + 1);
+ m->ol_flags |= PKT_RX_VLAN_PKT;
+ m->vlan_tci = rte_be_to_cpu_16(vh->vlan_tci);
+
+ /* Copy ether header over rather than moving whole packet */
+ memmove(rte_pktmbuf_adj(m, sizeof(struct vlan_hdr)),
+ eh, 2 * ETHER_ADDR_LEN);
+
+ return 0;
+}
+
+/**
+ * Insert VLAN tag into mbuf.
+ *
+ * Software version of VLAN unstripping
+ *
+ * @param m
+ * The packet mbuf.
+ * @return
+ * - 0: On success
+ * -EPERM: mbuf is is shared overwriting would be unsafe
+ * -ENOSPC: not enough headroom in mbuf
+ */
+static inline int rte_vlan_insert(struct rte_mbuf **m)
+{
+ struct ether_hdr *oh, *nh;
+ struct vlan_hdr *vh;
+
+ /* Can't insert header if mbuf is shared */
+ if (rte_mbuf_refcnt_read(*m) > 1) {
+ struct rte_mbuf *copy;
+
+ copy = rte_pktmbuf_clone(*m, (*m)->pool);
+ if (unlikely(copy == NULL))
+ return -ENOMEM;
+ rte_pktmbuf_free(*m);
+ *m = copy;
+ }
+
+ oh = rte_pktmbuf_mtod(*m, struct ether_hdr *);
+ nh = (struct ether_hdr *)
+ rte_pktmbuf_prepend(*m, sizeof(struct vlan_hdr));
+ if (nh == NULL)
+ return -ENOSPC;
+
+ memmove(nh, oh, 2 * ETHER_ADDR_LEN);
+ nh->ether_type = rte_cpu_to_be_16(ETHER_TYPE_VLAN);
+
+ vh = (struct vlan_hdr *) (nh + 1);
+ vh->vlan_tci = rte_cpu_to_be_16((*m)->vlan_tci);
+
+ return 0;
+}
#ifdef __cplusplus
}
git.droids-corp.org / dpdk.git / blobdiff