diff options
Diffstat (limited to 'common/VIL/l2l3_stack/l2_proto.h')
| -rw-r--r-- | common/VIL/l2l3_stack/l2_proto.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/common/VIL/l2l3_stack/l2_proto.h b/common/VIL/l2l3_stack/l2_proto.h new file mode 100644 index 00000000..05466070 --- /dev/null +++ b/common/VIL/l2l3_stack/l2_proto.h @@ -0,0 +1,150 @@ +/* +// Copyright (c) 2017 Intel Corporation +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +*/ + +/** + * @file + * L2 Protocol Handler + * Reads the packet from the interface and sets the + * masks for a burst of packets based on ethertype and + * calls the relevant function registered for that ethertype + * + */ + +#ifndef L2_PROTO_H +#define L2_PROTO_H + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdint.h> +#include <inttypes.h> +#include <sys/types.h> +#include <sys/queue.h> +#include <netinet/in.h> +#include <setjmp.h> +#include <stdarg.h> +#include <ctype.h> +#include <errno.h> +#include <getopt.h> +#include <signal.h> +#include <stdbool.h> + +#include <rte_common.h> +#include <rte_log.h> +#include <rte_malloc.h> +#include <rte_memory.h> +#include <rte_memcpy.h> +#include <rte_memzone.h> +#include <rte_eal.h> +#include <rte_per_lcore.h> +#include <rte_launch.h> +#include <rte_atomic.h> +#include <rte_cycles.h> +#include <rte_prefetch.h> +#include <rte_lcore.h> +#include <rte_per_lcore.h> +#include <rte_branch_prediction.h> +#include <rte_interrupts.h> +#include <rte_pci.h> +#include <rte_random.h> +#include <rte_debug.h> +#include <rte_ether.h> +#include <rte_ethdev.h> +#include <rte_ip.h> +#include <rte_ring.h> +#include <rte_mempool.h> +#include <rte_mbuf.h> +#include <rte_eth_ctrl.h> +#include <interface.h> + +/* Array indexes of proto_packet_type structure */ +#define IPv4_VAL 0 /**< Array index for IPv4 */ +#define ARP_VAL 1 /**< Array index for ARP */ +#define IPv6_VAL 2 /**< Array index for IPv6 */ + +/* Enable to print L2_Proto debugs */ +#define L2_PROTO_DBG 1 /**< Enable to print L2 Proto debugs */ + +/** + * A structure used to call the function handlers for a certain ethertype + */ +struct proto_packet_type { + uint16_t type; /**< Ethertype */ + void (*func) (struct rte_mbuf **m, uint16_t nb_pkts, uint64_t pkt_mask, l2_phy_interface_t *port); /**< Function pointer to the registered callback function */ +} __rte_cache_aligned;/**< RTE Cache alignment */ + +/** + * Function called from other modules to add the certain rx functions for particular ethertypes + * + * @param type + * Ethertype + * @param (*func)() + * Function pointer to the function being registered by different modules + */ +void +list_add_type(uint16_t type, + void (*func) (struct rte_mbuf **, uint16_t, uint64_t, + l2_phy_interface_t *)); + +/** + * Function to check whether the destination mac address of the packet is the mac address of the received port. + * Drop the packet if it is not destined to the host. + * If it is destined to this host, then set the packet masks for IPv4, IPv6 and ARP packet types for a burst of packets. + * + * @param m + * rte_mbuf packet + * + * @param portid + * Portid from which the packet was received + * + * @param pos + * Index of the packet in the burst + * + * @param pkts_mask + * Packet mask where bits are set at positions for the packets in the burst which were destined to the host + * + * @param arp_pkts_mask + * Packet mask for ARP where bits are set for valid ARP packets + * + * @param ipv4_pkts_mask + * Packet mask for IPv4 where bits are set for valid IPv4 packets + * + * @param ipv6_pkts_mask + * Packet mask for IPv6 where bits are set for valid IPv6 packets + * + */ +void +l2_check_mac(struct rte_mbuf *m[IFM_BURST_SIZE], l2_phy_interface_t *port, + uint8_t pos, uint64_t *pkts_mask, uint64_t *arp_pkts_mask, + uint64_t *ipv4_pkts_mask, uint64_t *ipv6_pkts_mask); + +/** + * Entry function to L2 Protocol Handler where appropriate functions are called for particular ethertypes + * + * @param m + * rte_mbuf packet + * + * @param nb_rx + * Number of packets read + * + * @param portid + * Port-id of the port in which packet was received + */ +void +protocol_handler_recv(struct rte_mbuf *m[IFM_BURST_SIZE], uint16_t nb_rx, + l2_phy_interface_t *port); + +#endif |