/*
-// Copyright (c) 2010-2017 Intel Corporation
+// Copyright (c) 2010-2020 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// limitations under the License.
*/
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include <net/if.h>
+
#include <rte_hash.h>
#include <rte_hash_crc.h>
-#include "prox_cfg.h"
+#include <rte_ether.h>
+#include <rte_icmp.h>
+#include "prox_cfg.h"
#include "prox_globals.h"
#include "rx_pkt.h"
#include "arp.h"
#include "mbuf_utils.h"
#include "etypes.h"
#include "defaults.h"
-#include "prox_cfg.h"
#include "prox_malloc.h"
#include "quit.h"
#include "task_init.h"
#include "lconf.h"
#include "input.h"
#include "tx_pkt.h"
+#include "defines.h"
+#include "prox_ipv6.h"
+#include "packet_utils.h"
-#define IP4(x) x & 0xff, (x >> 8) & 0xff, (x >> 16) & 0xff, x >> 24
#define PROX_MAX_ARP_REQUESTS 32 // Maximum number of tasks requesting the same MAC address
+#define NETLINK_BUF_SIZE 16384
+
+static char netlink_buf[NETLINK_BUF_SIZE];
-const char *actions_string[] = {"UPDATE_FROM_CTRL", "SEND_ARP_REQUEST_FROM_CTRL", "SEND_ARP_REPLY_FROM_CTRL", "HANDLE_ARP_TO_CTRL", "REQ_MAC_TO_CTRL"};
+const char *actions_string[] = {
+ "MAC_INFO_FROM_MASTER", // Controlplane sending a MAC update to dataplane
+ "MAC_INFO_FROM_MASTER_FOR_IPV6",// Controlplane sending a MAC update to dataplane
+ "IPV6_INFO_FROM_MASTER", // Controlplane IPv6 Global IP info to dataplane
+ "ROUTE_ADD_FROM_MASTER", // Controlplane sending a new route to dataplane
+ "ROUTE_DEL_FROM_MASTER", // Controlplane deleting a new route from dataplane
+ "SEND_ARP_REQUEST_FROM_MASTER", // Controlplane requesting dataplane to send ARP request
+ "SEND_ARP_REPLY_FROM_MASTER", // Controlplane requesting dataplane to send ARP reply
+ "SEND_NDP_FROM_MASTER", // Controlplane requesting dataplane to send NDP
+ "SEND_ICMP_FROM_MASTER", // Controlplane requesting dataplane to send ICMP message
+ "SEND_BGP_FROM_MASTER", // Controlplane requesting dataplane to send BGP message
+ "ARP_PKT_FROM_NET_TO_MASTER", // ARP sent by datplane to Controlpane for handling
+ "NDP_PKT_FROM_NET_TO_MASTER," // NDP sent by datplane to Controlpane for handling
+ "ICMP_TO_MASTER", // ICMP sent by datplane to Controlpane for handling
+ "BGP_TO_MASTER" // BGP sent by datplane to Controlpane for handling
+ "IP4_REQ_MAC_TO_MASTER", // Dataplane requesting MAC resolution to Controlplane
+ "IP6_REQ_MAC_TO_MASTER", // Dataplane requesting MAC resolution to Controlplane
+ "PKT_FROM_TAP" // Packet received by Controlplane from kernel and forwarded to dataplane for sending
+
+};
+
+int (*handle_ctrl_plane)(struct task_base *tbase, struct rte_mbuf **mbuf, uint16_t n_pkts) = NULL;
static struct my_arp_t arp_reply = {
.htype = 0x100,
.oper = 0x100
};
-struct ip_table {
- struct ether_addr mac;
- struct rte_ring *ring;
-};
-
-struct external_ip_table {
- struct ether_addr mac;
- struct rte_ring *rings[PROX_MAX_ARP_REQUESTS];
- uint16_t nb_requests;
-};
-
-struct port_table {
- struct ether_addr mac;
- struct rte_ring *ring;
- uint32_t ip;
- uint8_t port;
- uint8_t flags;
-};
-
-struct task_master {
- struct task_base base;
- struct rte_ring *ctrl_rx_ring;
- struct rte_ring **ctrl_tx_rings;
- struct ip_table *internal_ip_table;
- struct external_ip_table *external_ip_table;
- struct rte_hash *external_ip_hash;
- struct rte_hash *internal_ip_hash;
- struct port_table internal_port_table[PROX_MAX_PORTS];
-};
-
struct ip_port {
uint32_t ip;
uint8_t port;
} __attribute__((packed));
-static inline uint8_t get_command(struct rte_mbuf *mbuf)
-{
- return mbuf->udata64 & 0xFF;
-}
-static inline uint8_t get_task(struct rte_mbuf *mbuf)
-{
- return (mbuf->udata64 >> 8) & 0xFF;
-}
-static inline uint8_t get_core(struct rte_mbuf *mbuf)
+struct ip6_port {
+ struct ipv6_addr ip6;
+ uint8_t port;
+} __attribute__((packed));
+
+void register_router_to_ctrl_plane(struct task_base *tbase, uint8_t port_id, uint8_t core_id, uint8_t task_id, struct ipv6_addr *local_ipv6_addr, struct ipv6_addr *global_ipv6_addr, struct ipv6_addr *router_prefix)
{
- return (mbuf->udata64 >> 16) & 0xFF;
+ struct task_master *task = (struct task_master *)tbase;
+ task->internal_port_table[port_id].flags |= IPV6_ROUTER;
+ memcpy(&task->internal_port_table[port_id].router_prefix, router_prefix, sizeof(struct ipv6_addr));
+ register_node_to_ctrl_plane(tbase, local_ipv6_addr, global_ipv6_addr, port_id, core_id, task_id);
}
-static inline uint8_t get_port(struct rte_mbuf *mbuf)
+
+void register_node_to_ctrl_plane(struct task_base *tbase, struct ipv6_addr *local_ipv6_addr, struct ipv6_addr *global_ipv6_addr, uint8_t port_id, uint8_t core_id, uint8_t task_id)
{
- return mbuf->port;
+ struct task_master *task = (struct task_master *)tbase;
+ if (task->internal_port_table[port_id].flags & IPV6_ROUTER)
+ plogx_dbg("\tregistering router with port %d core %d and task %d\n", port_id, core_id, task_id);
+ else
+ plogx_dbg("\tregistering node with port %d core %d and task %d\n", port_id, core_id, task_id);
+
+ if (port_id >= PROX_MAX_PORTS) {
+ plog_err("Unable to register router, port %d\n", port_id);
+ return;
+ }
+ task->internal_port_table[port_id].ring = task->ctrl_tx_rings[core_id * MAX_TASKS_PER_CORE + task_id];
+ memcpy(&task->internal_port_table[port_id].mac, &prox_port_cfg[port_id].eth_addr, sizeof(prox_rte_ether_addr));
+ memcpy(&task->internal_port_table[port_id].local_ipv6_addr, local_ipv6_addr, sizeof(struct ipv6_addr));
+ if (memcmp(local_ipv6_addr, &prox_cfg.random_ip, sizeof(struct ipv6_addr)) == 0) {
+ task->internal_port_table[port_id].flags |= HANDLE_RANDOM_LOCAL_IP_FLAG;
+ return;
+ }
+ memcpy(&task->internal_port_table[port_id].global_ipv6_addr, global_ipv6_addr, sizeof(struct ipv6_addr));
+ if (memcmp(global_ipv6_addr, &prox_cfg.random_ip, sizeof(struct ipv6_addr)) == 0) {
+ task->internal_port_table[port_id].flags |= HANDLE_RANDOM_GLOBAL_IP_FLAG;
+ return;
+ }
+ struct ip6_port key;
+ memcpy(&key.ip6, local_ipv6_addr, sizeof(struct ipv6_addr));
+ key.port = port_id;
+ int ret = rte_hash_add_key(task->internal_ip6_hash, (const void *)&key);
+ if (unlikely(ret < 0)) {
+ plog_err("Unable to register ip "IPv6_BYTES_FMT"\n", IPv6_BYTES(local_ipv6_addr->bytes));
+ return;
+ }
+ memcpy(&key.ip6, global_ipv6_addr, sizeof(struct ipv6_addr));
+ ret = rte_hash_add_key(task->internal_ip6_hash, (const void *)&key);
+ if (unlikely(ret < 0)) {
+ plog_err("Unable to register ip "IPv6_BYTES_FMT"\n", IPv6_BYTES(global_ipv6_addr->bytes));
+ return;
+ }
+ memcpy(&task->internal_ip6_table[ret].mac, &prox_port_cfg[port_id].eth_addr, sizeof(prox_rte_ether_addr));
+ task->internal_ip6_table[ret].ring = task->ctrl_tx_rings[core_id * MAX_TASKS_PER_CORE + task_id];
}
-static inline uint32_t get_ip(struct rte_mbuf *mbuf)
+
+void master_init_vdev(struct task_base *tbase, uint8_t port_id, uint8_t core_id, uint8_t task_id)
{
- return (mbuf->udata64 >> 32) & 0xFFFFFFFF;
+ struct task_master *task = (struct task_master *)tbase;
+ uint8_t vdev_port = prox_port_cfg[port_id].dpdk_mapping;
+ int rc, i;
+ if (vdev_port != NO_VDEV_PORT) {
+ for (i = 0; i < task->max_vdev_id; i++) {
+ if (task->all_vdev[i].port_id == vdev_port)
+ break;
+ }
+ if (i < task->max_vdev_id) {
+ // Already initialized (e.g. by another core handling the same port).
+ return;
+ }
+ task->all_vdev[task->max_vdev_id].port_id = vdev_port;
+ task->all_vdev[task->max_vdev_id].ring = task->ctrl_tx_rings[core_id * MAX_TASKS_PER_CORE + task_id];
+
+ struct sockaddr_in dst, src;
+ src.sin_family = AF_INET;
+ src.sin_port = rte_cpu_to_be_16(PROX_PSEUDO_PKT_PORT);
+ for (int vlan_id = 0; vlan_id < prox_port_cfg[vdev_port].n_vlans; vlan_id++) {
+ src.sin_addr.s_addr = rte_be_to_cpu_32(prox_port_cfg[vdev_port].ip_addr[vlan_id].ip);
+ int fd = socket(AF_INET, SOCK_DGRAM, 0);
+ PROX_PANIC(fd < 0, "Failed to open socket(AF_INET, SOCK_DGRAM, 0)\n");
+ prox_port_cfg[vdev_port].fds[vlan_id] = fd;
+ rc = bind(fd,(struct sockaddr *)&src, sizeof(struct sockaddr_in));
+ PROX_PANIC(rc, "Failed to bind("IPv4_BYTES_FMT":%d): errno = %d (%s)\n", IPv4_BYTES(((uint8_t*)&src.sin_addr.s_addr)), src.sin_port, errno, strerror(errno));
+ plog_info("DPDK port %d bound("IPv4_BYTES_FMT":%d) to fd %d\n", port_id, IPv4_BYTES(((uint8_t*)&src.sin_addr.s_addr)), src.sin_port, fd);
+ fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);
+ }
+ task->max_vdev_id++;
+ }
}
void register_ip_to_ctrl_plane(struct task_base *tbase, uint32_t ip, uint8_t port_id, uint8_t core_id, uint8_t task_id)
{
struct task_master *task = (struct task_master *)tbase;
struct ip_port key;
- plogx_dbg("\tregistering IP %x.%x.%x.%x with port %d core %d and task %d\n", IP4(ip), port_id, core_id, task_id);
+ plogx_info("\tregistering IP "IPv4_BYTES_FMT" with port %d core %d and task %d\n", IP4(ip), port_id, core_id, task_id);
if (port_id >= PROX_MAX_PORTS) {
- plog_err("Unable to register ip %x, port %d\n", ip, port_id);
+ plog_err("Unable to register ip "IPv4_BYTES_FMT", port %d\n", IP4(ip), port_id);
return;
}
- /* TODO - stoe multiple rings if multiple cores able to handle IP
+ /* TODO - store multiple rings if multiple cores able to handle IP
Remove them when such cores are stopped and de-register IP
*/
task->internal_port_table[port_id].ring = task->ctrl_tx_rings[core_id * MAX_TASKS_PER_CORE + task_id];
- memcpy(&task->internal_port_table[port_id].mac, &prox_port_cfg[port_id].eth_addr, 6);
+ memcpy(&task->internal_port_table[port_id].mac, &prox_port_cfg[port_id].eth_addr, sizeof(prox_rte_ether_addr));
task->internal_port_table[port_id].ip = ip;
if (ip == RANDOM_IP) {
key.port = port_id;
int ret = rte_hash_add_key(task->internal_ip_hash, (const void *)&key);
if (unlikely(ret < 0)) {
- plog_err("Unable to register ip %x\n", ip);
+ plog_err("Unable to register ip "IPv4_BYTES_FMT"\n", IP4(ip));
return;
}
- memcpy(&task->internal_ip_table[ret].mac, &prox_port_cfg[port_id].eth_addr, 6);
+ memcpy(&task->internal_ip_table[ret].mac, &prox_port_cfg[port_id].eth_addr, sizeof(prox_rte_ether_addr));
task->internal_ip_table[ret].ring = task->ctrl_tx_rings[core_id * MAX_TASKS_PER_CORE + task_id];
-
}
-static inline void handle_arp_reply(struct task_base *tbase, struct rte_mbuf *mbuf)
+static inline void handle_arp_reply(struct task_base *tbase, struct rte_mbuf *mbuf, struct my_arp_t *arp)
{
struct task_master *task = (struct task_master *)tbase;
- struct ether_hdr_arp *hdr_arp = rte_pktmbuf_mtod(mbuf, struct ether_hdr_arp *);
int i, ret;
- uint32_t key = hdr_arp->arp.data.spa;
- plogx_dbg("\tMaster handling ARP reply for ip %x\n", key);
+ uint32_t key = arp->data.spa;
+ plogx_dbg("\tMaster handling ARP reply for ip "IPv4_BYTES_FMT"\n", IP4(key));
ret = rte_hash_lookup(task->external_ip_hash, (const void *)&key);
if (unlikely(ret < 0)) {
} else {
// entry found for this IP
uint16_t nb_requests = task->external_ip_table[ret].nb_requests;
- memcpy(&hdr_arp->ether_hdr.d_addr.addr_bytes, &task->external_ip_table[ret].mac, 6);
// If we receive a request from multiple task for the same IP, then we update all tasks
if (task->external_ip_table[ret].nb_requests) {
rte_mbuf_refcnt_set(mbuf, nb_requests);
for (int i = 0; i < nb_requests; i++) {
struct rte_ring *ring = task->external_ip_table[ret].rings[i];
- tx_ring_ip(tbase, ring, UPDATE_FROM_CTRL, mbuf, key);
+ tx_ring_ip(tbase, ring, MAC_INFO_FROM_MASTER, mbuf, key);
}
task->external_ip_table[ret].nb_requests = 0;
+ } else {
+ tx_drop(mbuf);
}
}
}
-static inline void handle_arp_request(struct task_base *tbase, struct rte_mbuf *mbuf)
+static inline void handle_arp_request(struct task_base *tbase, struct rte_mbuf *mbuf, struct my_arp_t *arp)
{
struct task_master *task = (struct task_master *)tbase;
- struct ether_hdr_arp *hdr_arp = rte_pktmbuf_mtod(mbuf, struct ether_hdr_arp *);
+ prox_rte_ether_hdr *ether_hdr = rte_pktmbuf_mtod(mbuf, prox_rte_ether_hdr *);
int i, ret;
uint8_t port = get_port(mbuf);
struct ip_port key;
- key.ip = hdr_arp->arp.data.tpa;
+ key.ip = arp->data.tpa;
key.port = port;
if (task->internal_port_table[port].flags & HANDLE_RANDOM_IP_FLAG) {
- struct ether_addr mac;
- plogx_dbg("\tMaster handling ARP request for ip %x on port %d which supports random ip\n", key.ip, key.port);
+ prox_rte_ether_addr mac;
+ plogx_dbg("\tMaster handling ARP request for ip "IPv4_BYTES_FMT" on port %d which supports random ip\n", IP4(key.ip), key.port);
struct rte_ring *ring = task->internal_port_table[port].ring;
- create_mac(hdr_arp, &mac);
- mbuf->ol_flags &= ~(PKT_TX_IP_CKSUM|PKT_TX_UDP_CKSUM);
- build_arp_reply(hdr_arp, &mac);
- tx_ring(tbase, ring, ARP_REPLY_FROM_CTRL, mbuf);
+ create_mac(arp, &mac);
+ mbuf->ol_flags &= ~(RTE_MBUF_F_TX_IP_CKSUM|RTE_MBUF_F_TX_UDP_CKSUM);
+ build_arp_reply(ether_hdr, &mac, arp);
+ tx_ring(tbase, ring, SEND_ARP_REPLY_FROM_MASTER, mbuf);
return;
}
- plogx_dbg("\tMaster handling ARP request for ip %x\n", key.ip);
+ plogx_dbg("\tMaster handling ARP request for ip "IPv4_BYTES_FMT"\n", IP4(key.ip));
ret = rte_hash_lookup(task->internal_ip_hash, (const void *)&key);
if (unlikely(ret < 0)) {
// entry not found for this IP.
- plogx_dbg("Master ignoring ARP REQUEST received on un-registered IP %d.%d.%d.%d on port %d\n", IP4(hdr_arp->arp.data.tpa), port);
+ plogx_dbg("Master ignoring ARP REQUEST received on un-registered IP "IPv4_BYTES_FMT" on port %d\n", IP4(arp->data.tpa), port);
tx_drop(mbuf);
} else {
struct rte_ring *ring = task->internal_ip_table[ret].ring;
- mbuf->ol_flags &= ~(PKT_TX_IP_CKSUM|PKT_TX_UDP_CKSUM);
- build_arp_reply(hdr_arp, &task->internal_ip_table[ret].mac);
- tx_ring(tbase, ring, ARP_REPLY_FROM_CTRL, mbuf);
+ mbuf->ol_flags &= ~(RTE_MBUF_F_TX_IP_CKSUM|RTE_MBUF_F_TX_UDP_CKSUM);
+ build_arp_reply(ether_hdr, &task->internal_ip_table[ret].mac, arp);
+ tx_ring(tbase, ring, SEND_ARP_REPLY_FROM_MASTER, mbuf);
+ }
+}
+
+static inline int record_request(struct task_base *tbase, uint32_t ip_dst, uint8_t port, struct rte_ring *ring)
+{
+ struct task_master *task = (struct task_master *)tbase;
+ int ret = rte_hash_add_key(task->external_ip_hash, (const void *)&ip_dst);
+ int i;
+
+ if (unlikely(ret < 0)) {
+ plogx_dbg("Unable to add IP "IPv4_BYTES_FMT" in external_ip_hash\n", IP4(ip_dst));
+ return -1;
+ }
+
+ // If multiple tasks requesting the same info, we will need to send a reply to all of them
+ // However if one task sends multiple requests to the same IP (e.g. because it is not answering)
+ // then we should not send multiple replies to the same task
+ if (task->external_ip_table[ret].nb_requests >= PROX_MAX_ARP_REQUESTS) {
+ // This can only happen if really many tasks requests the same IP
+ plogx_dbg("Unable to add request for IP "IPv4_BYTES_FMT" in external_ip_table\n", IP4(ip_dst));
+ return -1;
+ }
+ for (i = 0; i < task->external_ip_table[ret].nb_requests; i++) {
+ if (task->external_ip_table[ret].rings[i] == ring)
+ break;
}
+ if (i >= task->external_ip_table[ret].nb_requests) {
+ // If this is a new request i.e. a new task requesting a new IP
+ task->external_ip_table[ret].rings[task->external_ip_table[ret].nb_requests] = ring;
+ task->external_ip_table[ret].nb_requests++;
+ }
+ return 0;
}
static inline void handle_unknown_ip(struct task_base *tbase, struct rte_mbuf *mbuf)
struct ether_hdr_arp *hdr_arp = rte_pktmbuf_mtod(mbuf, struct ether_hdr_arp *);
uint8_t port = get_port(mbuf);
uint32_t ip_dst = get_ip(mbuf);
- int ret1, ret2;
+ uint16_t vlan = ctrl_ring_get_vlan(mbuf);
- plogx_dbg("\tMaster handling unknown ip %x for port %d\n", ip_dst, port);
+ plogx_dbg("\tMaster handling unknown ip "IPv4_BYTES_FMT" for port %d\n", IP4(ip_dst), port);
if (unlikely(port >= PROX_MAX_PORTS)) {
plogx_dbg("Port %d not found", port);
tx_drop(mbuf);
return;
}
- ret2 = rte_hash_add_key(task->external_ip_hash, (const void *)&ip_dst);
+ if (record_request(tbase, ip_dst, port, ring) < 0) {
+ tx_drop(mbuf);
+ return;
+ }
+ // We send an ARP request even if one was just sent (and not yet answered) by another task
+ mbuf->ol_flags &= ~(RTE_MBUF_F_TX_IP_CKSUM|RTE_MBUF_F_TX_UDP_CKSUM);
+ build_arp_request(mbuf, &task->internal_port_table[port].mac, ip_dst, ip_src, vlan);
+ tx_ring(tbase, ring, SEND_ARP_REQUEST_FROM_MASTER, mbuf);
+}
+
+static inline void build_icmp_reply_message(struct task_base *tbase, struct rte_mbuf *mbuf)
+{
+ struct task_master *task = (struct task_master *)tbase;
+ struct ip_port key;
+ key.port = mbuf->port;
+ prox_rte_ether_hdr *hdr = rte_pktmbuf_mtod(mbuf, prox_rte_ether_hdr *);
+ prox_rte_ether_addr dst_mac;
+ prox_rte_ether_addr_copy(&hdr->s_addr, &dst_mac);
+ prox_rte_ether_addr_copy(&hdr->d_addr, &hdr->s_addr);
+ prox_rte_ether_addr_copy(&dst_mac, &hdr->d_addr);
+ prox_rte_ipv4_hdr *ip_hdr = (prox_rte_ipv4_hdr *)(hdr + 1);
+ key.ip = ip_hdr->dst_addr;
+ ip_hdr->dst_addr = ip_hdr->src_addr;
+ ip_hdr->src_addr = key.ip;
+ prox_rte_icmp_hdr *picmp = (prox_rte_icmp_hdr *)(ip_hdr + 1);
+ picmp->icmp_type = PROX_RTE_IP_ICMP_ECHO_REPLY;
+
+ int ret = rte_hash_lookup(task->internal_ip_hash, (const void *)&key);
+ if (unlikely(ret < 0)) {
+ // entry not found for this IP.
+ plogx_dbg("Master ignoring ICMP received on un-registered IP "IPv4_BYTES_FMT" on port %d\n", IP4(key.ip), mbuf->port);
+ tx_drop(mbuf);
+ } else {
+ struct rte_ring *ring = task->internal_ip_table[ret].ring;
+ mbuf->ol_flags &= ~(RTE_MBUF_F_TX_IP_CKSUM|RTE_MBUF_F_TX_UDP_CKSUM);
+ tx_ring(tbase, ring, SEND_ICMP_FROM_MASTER, mbuf);
+ }
+}
+
+static inline void handle_icmp(struct task_base *tbase, struct rte_mbuf *mbuf)
+{
+ struct task_master *task = (struct task_master *)tbase;
+ uint8_t port_id = get_port(mbuf);
+ struct port_table *port = &task->internal_port_table[port_id];
+ prox_rte_ether_hdr *hdr = rte_pktmbuf_mtod(mbuf, prox_rte_ether_hdr *);
+ if (hdr->ether_type != ETYPE_IPv4) {
+ tx_drop(mbuf);
+ return;
+ }
+ prox_rte_ipv4_hdr *ip_hdr = (prox_rte_ipv4_hdr *)(hdr + 1);
+ if (ip_hdr->next_proto_id != IPPROTO_ICMP) {
+ tx_drop(mbuf);
+ return;
+ }
+ if (ip_hdr->dst_addr != port->ip) {
+ tx_drop(mbuf);
+ return;
+ }
+
+ prox_rte_icmp_hdr *picmp = (prox_rte_icmp_hdr *)(ip_hdr + 1);
+ uint8_t type = picmp->icmp_type;
+ if (type == PROX_RTE_IP_ICMP_ECHO_REQUEST) {
+ port->n_echo_req++;
+ if (rte_rdtsc() - port->last_echo_req_rcvd_tsc > rte_get_tsc_hz()) {
+ plog_dbg("Received %u Echo Request on IP "IPv4_BYTES_FMT" (last received from IP "IPv4_BYTES_FMT")\n", port->n_echo_req, IPv4_BYTES(((uint8_t*)&ip_hdr->dst_addr)), IPv4_BYTES(((uint8_t*)&ip_hdr->src_addr)));
+ port->n_echo_req = 0;
+ port->last_echo_req_rcvd_tsc = rte_rdtsc();
+ }
+ return build_icmp_reply_message(tbase, mbuf);
+ } else if (type == PROX_RTE_IP_ICMP_ECHO_REPLY) {
+ port->n_echo_rep++;
+ if (rte_rdtsc() - port->last_echo_rep_rcvd_tsc > rte_get_tsc_hz()) {
+ plog_info("Received %u Echo Reply on IP "IPv4_BYTES_FMT" (last received from IP "IPv4_BYTES_FMT")\n", port->n_echo_rep, IPv4_BYTES(((uint8_t*)&ip_hdr->dst_addr)), IPv4_BYTES(((uint8_t*)&ip_hdr->src_addr)));
+ port->n_echo_rep = 0;
+ port->last_echo_rep_rcvd_tsc = rte_rdtsc();
+ }
+ }
+ tx_drop(mbuf);
+ return;
+}
+
+static inline void handle_unknown_ip6(struct task_base *tbase, struct rte_mbuf *mbuf)
+{
+ struct task_master *task = (struct task_master *)tbase;
+ struct ether_hdr_arp *hdr_arp = rte_pktmbuf_mtod(mbuf, struct ether_hdr_arp *);
+ uint8_t port_id = get_port(mbuf);
+ struct ipv6_addr *ip_dst = ctrl_ring_get_ipv6_addr(mbuf);
+ uint16_t vlan = ctrl_ring_get_vlan(mbuf);
+ int ret1, ret2, i;
+
+ plogx_dbg("\tMaster trying to find MAC of external IP "IPv6_BYTES_FMT" for port %d\n", IPv6_BYTES(ip_dst->bytes), port_id);
+ if (unlikely(port_id >= PROX_MAX_PORTS)) {
+ plogx_dbg("Port %d not found", port_id);
+ tx_drop(mbuf);
+ return;
+ }
+ struct ipv6_addr *local_ip_src = &task->internal_port_table[port_id].local_ipv6_addr;
+ struct ipv6_addr *global_ip_src = &task->internal_port_table[port_id].global_ipv6_addr;
+ struct ipv6_addr *ip_src;
+ if (memcmp(local_ip_src, ip_dst, prox_port_cfg[port_id].v6_mask_length) == 0)
+ ip_src = local_ip_src;
+ else if (memcmp(global_ip_src, &null_addr, 16))
+ ip_src = global_ip_src;
+ else {
+ plogx_dbg("Unable to find a src ip for dst ip "IPv6_BYTES_FMT"\n", IPv6_BYTES(ip_dst->bytes));
+ tx_drop(mbuf);
+ return;
+ }
+ struct rte_ring *ring = task->ctrl_tx_rings[get_core(mbuf) * MAX_TASKS_PER_CORE + get_task(mbuf)];
+
+ if (ring == NULL) {
+ plogx_dbg("Port %d not registered", port_id);
+ tx_drop(mbuf);
+ return;
+ }
+
+ ret2 = rte_hash_add_key(task->external_ip6_hash, (const void *)ip_dst);
if (unlikely(ret2 < 0)) {
- // entry not found for this IP: delete the reply
- plogx_dbg("Unable to add IP %x in external_ip_hash\n", rte_be_to_cpu_32(hdr_arp->arp.data.tpa));
+ plogx_dbg("Unable to add IP "IPv6_BYTES_FMT" in external_ip6_hash\n", IPv6_BYTES(ip_dst->bytes));
tx_drop(mbuf);
return;
}
- task->external_ip_table[ret2].rings[task->external_ip_table[ret2].nb_requests] = ring;
- task->external_ip_table[ret2].nb_requests++;
- memcpy(&task->external_ip_table[ret2].mac, &task->internal_port_table[port].mac, 6);
- // We send an ARP request even if one was just sent (and not yet answered) by another task
- mbuf->ol_flags &= ~(PKT_TX_IP_CKSUM|PKT_TX_UDP_CKSUM);
- build_arp_request(mbuf, &task->internal_port_table[port].mac, ip_dst, ip_src);
- tx_ring(tbase, ring, ARP_REQ_FROM_CTRL, mbuf);
+ // If multiple tasks requesting the same info, we will need to send a reply to all of them
+ // However if one task sends multiple requests to the same IP (e.g. because it is not answering)
+ // then we should not send multiple replies to the same task
+ if (task->external_ip6_table[ret2].nb_requests >= PROX_MAX_ARP_REQUESTS) {
+ // This can only happen if really many tasks requests the same IP
+ plogx_dbg("Unable to add request for IP "IPv6_BYTES_FMT" in external_ip6_table\n", IPv6_BYTES(ip_dst->bytes));
+ tx_drop(mbuf);
+ return;
+ }
+ for (i = 0; i < task->external_ip6_table[ret2].nb_requests; i++) {
+ if (task->external_ip6_table[ret2].rings[i] == ring)
+ break;
+ }
+ if (i >= task->external_ip6_table[ret2].nb_requests) {
+ // If this is a new request i.e. a new task requesting a new IP
+ task->external_ip6_table[ret2].rings[task->external_ip6_table[ret2].nb_requests] = ring;
+ task->external_ip6_table[ret2].nb_requests++;
+ // Only needed for first request - but avoid test and copy the same 6 bytes
+ // In most cases we will only have one request per IP.
+ //memcpy(&task->external_ip6_table[ret2].mac, &task->internal_port_table[port_id].mac, sizeof(prox_rte_ether_addr));
+ }
+
+ // As timers are not handled by master, we might send an NS request even if one was just sent
+ // (and not yet answered) by another task
+ build_neighbour_sollicitation(mbuf, &task->internal_port_table[port_id].mac, ip_dst, ip_src, vlan);
+ tx_ring(tbase, ring, SEND_NDP_FROM_MASTER, mbuf);
}
-static inline void handle_message(struct task_base *tbase, struct rte_mbuf *mbuf, int ring_id)
+static inline void handle_rs(struct task_base *tbase, struct rte_mbuf *mbuf, prox_rte_ipv6_hdr *ipv6_hdr, uint16_t vlan)
+{
+ struct task_master *task = (struct task_master *)tbase;
+ int i, ret;
+ uint8_t port = get_port(mbuf);
+
+ if (task->internal_port_table[port].flags & IPV6_ROUTER) {
+ plogx_dbg("\tMaster handling Router Solicitation from ip "IPv6_BYTES_FMT" on port %d\n", IPv6_BYTES(ipv6_hdr->src_addr), port);
+ struct rte_ring *ring = task->internal_port_table[port].ring;
+ build_router_advertisement(mbuf, &prox_port_cfg[port].eth_addr, &task->internal_port_table[port].local_ipv6_addr, &task->internal_port_table[port].router_prefix, vlan);
+ tx_ring(tbase, ring, SEND_NDP_FROM_MASTER, mbuf);
+ return;
+ }
+}
+
+static inline void handle_ra(struct task_base *tbase, struct rte_mbuf *mbuf, prox_rte_ipv6_hdr *ipv6_hdr, uint16_t vlan)
+{
+ struct task_master *task = (struct task_master *)tbase;
+ int i, ret, send = 0;
+ uint8_t port = get_port(mbuf);
+ struct rte_ring *ring = task->internal_port_table[port].ring;
+
+ plog_dbg("Master handling Router Advertisement from ip "IPv6_BYTES_FMT" on port %d - len = %d; payload_len = %d\n", IPv6_BYTES(ipv6_hdr->src_addr), port, rte_pktmbuf_pkt_len(mbuf), rte_be_to_cpu_16(ipv6_hdr->payload_len));
+ if (rte_be_to_cpu_16(ipv6_hdr->payload_len) + sizeof(prox_rte_ipv6_hdr) + sizeof(prox_rte_ether_hdr) > rte_pktmbuf_pkt_len(mbuf)) {
+ plog_err("Unexpected length received: pkt_len = %d, ipv6 hdr length = %ld, ipv6 payload len = %d\n", rte_pktmbuf_pkt_len(mbuf), sizeof(prox_rte_ipv6_hdr), rte_be_to_cpu_16(ipv6_hdr->payload_len));
+ tx_drop(mbuf);
+ return;
+ }
+ if (ring == NULL) {
+ plog_info("TX side not initialized yet => dropping\n");
+ tx_drop(mbuf);
+ return;
+ }
+ int16_t option_len = rte_be_to_cpu_16(ipv6_hdr->payload_len) - sizeof(struct icmpv6_RA) + sizeof(struct icmpv6_option);
+ struct icmpv6_RA *router_advertisement = (struct icmpv6_RA *)(ipv6_hdr + 1);
+ struct icmpv6_option *option = (struct icmpv6_option *)&router_advertisement->options;
+ struct icmpv6_prefix_option *prefix_option;
+ while(option_len > 0) {
+ uint8_t type = option->type;
+ switch(type) {
+ case ICMPv6_source_link_layer_address:
+ plog_dbg("\tOption %d = Source Link Layer Address\n", type);
+ break;
+ case ICMPv6_prefix_information:
+ prefix_option = (struct icmpv6_prefix_option *)option;
+ plog_dbg("\tOption %d = Prefix Information = %s\n", type, IP6_Canonical(&prefix_option->prefix));
+ send = 1;
+ break;
+ case ICMPv6_mtu:
+ plog_dbg("\tOption %d = MTU\n", type);
+ break;
+ default:
+ plog_dbg("\tOption %d = Unknown Option\n", type);
+ break;
+ }
+ if ((option->length == 0) || (option->length *8 > option_len)) {
+ plog_err("Unexpected option length (%d) received in option %d: %d\n", option->length, option->type, option->length);
+ send = 0;
+ break;
+ }
+ option_len -=option->length * 8;
+ option = (struct icmpv6_option *)(((uint8_t *)option) + option->length * 8);
+ }
+ if (send) {
+ struct ipv6_addr global_ipv6;
+ memcpy(&global_ipv6, &prefix_option->prefix, sizeof(struct ipv6_addr));
+ set_EUI(&global_ipv6, &task->internal_port_table[port].mac);
+ tx_ring_ip6(tbase, ring, IPV6_INFO_FROM_MASTER, mbuf, &global_ipv6);
+ } else
+ tx_drop(mbuf);
+}
+
+static inline void handle_ns(struct task_base *tbase, struct rte_mbuf *mbuf, prox_rte_ipv6_hdr *ipv6_hdr, uint16_t vlan)
{
+ struct task_master *task = (struct task_master *)tbase;
+ struct icmpv6_NS *neighbour_sollicitation = (struct icmpv6_NS *)(ipv6_hdr + 1);
+ int i, ret;
+ uint8_t port = get_port(mbuf);
+ struct rte_ring *ring = task->internal_port_table[port].ring;
+
+ plog_dbg("Master handling Neighbour Sollicitation for ip "IPv6_BYTES_FMT" on port %d - len = %d; payload_len = %d\n", IPv6_BYTES(neighbour_sollicitation->target_address.bytes), port, rte_pktmbuf_pkt_len(mbuf), rte_be_to_cpu_16(ipv6_hdr->payload_len));
+ if (rte_be_to_cpu_16(ipv6_hdr->payload_len) + sizeof(prox_rte_ipv6_hdr) + sizeof(prox_rte_ether_hdr) > rte_pktmbuf_pkt_len(mbuf)) {
+ plog_err("Unexpected length received: pkt_len = %d, ipv6 hdr length = %ld, ipv6 payload len = %d\n", rte_pktmbuf_pkt_len(mbuf), sizeof(prox_rte_ipv6_hdr), rte_be_to_cpu_16(ipv6_hdr->payload_len));
+ tx_drop(mbuf);
+ return;
+ }
+ int16_t option_len = rte_be_to_cpu_16(ipv6_hdr->payload_len) - sizeof(struct icmpv6_NS) + sizeof(struct icmpv6_option);
+ struct icmpv6_option *option = (struct icmpv6_option *)&neighbour_sollicitation->options;
+ while(option_len > 0) {
+ uint8_t type = option->type;
+ switch(type) {
+ case ICMPv6_source_link_layer_address:
+ plog_dbg("Option %d = Source Link Layer Address\n", type);
+ break;
+ default:
+ plog_dbg("Option %d = Unknown Option\n", type);
+ break;
+ }
+ if ((option->length == 0) || (option->length *8 > option_len)) {
+ plog_err("Unexpected option length (%d) received in option %d: %d\n", option->length, option->type, option->length);
+ tx_drop(mbuf);
+ return;
+ }
+ option_len -=option->length * 8;
+ option = (struct icmpv6_option *)(((uint8_t *)option) + option->length * 8);
+ }
+ struct ip6_port key;
+ memcpy(&key.ip6, &neighbour_sollicitation->target_address, sizeof(struct ipv6_addr));
+ key.port = port;
+
+ if (memcmp(&neighbour_sollicitation->target_address, &task->internal_port_table[port].local_ipv6_addr, 8) == 0) {
+ // Local IP
+ if (task->internal_port_table[port].flags & HANDLE_RANDOM_LOCAL_IP_FLAG) {
+ prox_rte_ether_addr mac;
+ plogx_dbg("\tMaster handling NS request for ip "IPv6_BYTES_FMT" on port %d which supports random ip\n", IPv6_BYTES(key.ip6.bytes), key.port);
+ struct rte_ring *ring = task->internal_port_table[port].ring;
+ create_mac_from_EUI(&key.ip6, &mac);
+ build_neighbour_advertisement(tbase, mbuf, &mac, &task->internal_port_table[port].local_ipv6_addr, PROX_SOLLICITED, vlan);
+ tx_ring(tbase, ring, SEND_NDP_FROM_MASTER, mbuf);
+ return;
+ }
+ } else {
+ if (task->internal_port_table[port].flags & HANDLE_RANDOM_GLOBAL_IP_FLAG) {
+ prox_rte_ether_addr mac;
+ plogx_dbg("\tMaster handling NS request for ip "IPv6_BYTES_FMT" on port %d which supports random ip\n", IPv6_BYTES(key.ip6.bytes), key.port);
+ struct rte_ring *ring = task->internal_port_table[port].ring;
+ create_mac_from_EUI(&key.ip6, &mac);
+ build_neighbour_advertisement(tbase, mbuf, &mac, &task->internal_port_table[port].global_ipv6_addr, PROX_SOLLICITED, vlan);
+ tx_ring(tbase, ring, SEND_NDP_FROM_MASTER, mbuf);
+ return;
+ }
+ }
+
+ ret = rte_hash_lookup(task->internal_ip6_hash, (const void *)&key);
+ if (unlikely(ret < 0)) {
+ // entry not found for this IP.
+ plogx_dbg("Master ignoring Neighbour Sollicitation received on un-registered IP "IPv6_BYTES_FMT" on port %d\n", IPv6_BYTES(key.ip6.bytes), port);
+ tx_drop(mbuf);
+ } else {
+ struct rte_ring *ring = task->internal_ip6_table[ret].ring;
+ if (ring == NULL) return;
+ build_neighbour_advertisement(tbase, mbuf, &task->internal_ip6_table[ret].mac, &key.ip6, PROX_SOLLICITED, vlan);
+ tx_ring(tbase, ring, SEND_NDP_FROM_MASTER, mbuf);
+ }
+}
+
+static inline void handle_na(struct task_base *tbase, struct rte_mbuf *mbuf, prox_rte_ipv6_hdr *ipv6_hdr, uint16_t vlan)
+{
+ struct task_master *task = (struct task_master *)tbase;
+ struct icmpv6_NA *neighbour_advertisement = (struct icmpv6_NA *)(ipv6_hdr + 1);
+ int i, ret;
+ uint8_t port = get_port(mbuf);
+ struct rte_ring *ring = task->internal_port_table[port].ring;
+
+ plog_dbg("Master handling Neighbour Advertisement for ip "IPv6_BYTES_FMT" on port %d - len = %d; payload_len = %d\n", IPv6_BYTES(neighbour_advertisement->destination_address.bytes), port, rte_pktmbuf_pkt_len(mbuf), rte_be_to_cpu_16(ipv6_hdr->payload_len));
+ if (rte_be_to_cpu_16(ipv6_hdr->payload_len) + sizeof(prox_rte_ipv6_hdr) + sizeof(prox_rte_ether_hdr) > rte_pktmbuf_pkt_len(mbuf)) {
+ plog_err("Unexpected length received: pkt_len = %d, ipv6 hdr length = %ld, ipv6 payload len = %d\n", rte_pktmbuf_pkt_len(mbuf), sizeof(prox_rte_ipv6_hdr), rte_be_to_cpu_16(ipv6_hdr->payload_len));
+ tx_drop(mbuf);
+ return;
+ }
+ int16_t option_len = rte_be_to_cpu_16(ipv6_hdr->payload_len) - sizeof(struct icmpv6_NA) + sizeof(struct icmpv6_option);
+ struct icmpv6_option *option = (struct icmpv6_option *)&neighbour_advertisement->options;
+ uint8_t *target_address = NULL;
+ while(option_len > 0) {
+ uint8_t type = option->type;
+ switch(type) {
+ case ICMPv6_source_link_layer_address:
+ plog_dbg("Option %d = Source Link Layer Address\n", type);
+ break;
+ case ICMPv6_target_link_layer_address:
+ if (option->length != 1) {
+ plog_err("Unexpected option length = %u for Target Link Layer Address\n", option->length);
+ break;
+ }
+ target_address = option->data;
+ plog_dbg("Option %d = Target Link Layer Address = "MAC_BYTES_FMT"\n", type, MAC_BYTES(target_address));
+ break;
+ default:
+ plog_dbg("Option %d = Unknown Option\n", type);
+ break;
+ }
+ if ((option->length == 0) || (option->length *8 > option_len)) {
+ plog_err("Unexpected option length (%d) received in option %d: %d\n", option->length, option->type, option->length);
+ tx_drop(mbuf);
+ return;
+ }
+ option_len -=option->length * 8;
+ option = (struct icmpv6_option *)(((uint8_t *)option) + option->length * 8);
+ }
+
+ if (target_address == NULL) {
+ target_address = (uint8_t *)&neighbour_advertisement->destination_address;
+ }
struct ether_hdr_arp *hdr_arp = rte_pktmbuf_mtod(mbuf, struct ether_hdr_arp *);
+ struct ipv6_addr *key = &neighbour_advertisement->destination_address;
+
+ ret = rte_hash_lookup(task->external_ip6_hash, (const void *)key);
+ if (unlikely(ret < 0)) {
+ // entry not found for this IP: we did not ask a request, delete the reply
+ plog_err("Unkown IP "IPv6_BYTES_FMT"", IPv6_BYTES(neighbour_advertisement->destination_address.bytes));
+ tx_drop(mbuf);
+ } else {
+ // entry found for this IP
+ uint16_t nb_requests = task->external_ip6_table[ret].nb_requests;
+ //memcpy(&hdr->d_addr.addr_bytes, &task->external_ip6_table[ret].mac, sizeof(prox_rte_ether_addr));
+ // If we receive a request from multiple task for the same IP, then we update all tasks
+ if (task->external_ip6_table[ret].nb_requests) {
+ rte_mbuf_refcnt_set(mbuf, nb_requests);
+ for (int i = 0; i < nb_requests; i++) {
+ struct rte_ring *ring = task->external_ip6_table[ret].rings[i];
+ tx_ring_ip6_data(tbase, ring, MAC_INFO_FROM_MASTER_FOR_IPV6, mbuf, &neighbour_advertisement->destination_address, *(uint64_t *)target_address);
+ }
+ task->external_ip6_table[ret].nb_requests = 0;
+ } else {
+ plog_err("UNEXPECTED nb_requests == 0");
+ tx_drop(mbuf);
+ }
+ }
+}
+
+static inline void handle_message(struct task_base *tbase, struct rte_mbuf *mbuf, int ring_id)
+{
+ struct task_master *task = (struct task_master *)tbase;
+ prox_rte_ether_hdr *ether_hdr;
+ struct icmpv6 *icmpv6;
int command = get_command(mbuf);
+ uint8_t port = get_port(mbuf);
uint32_t ip;
+ uint16_t vlan = 0, ether_type;
+ uint8_t vdev_port = prox_port_cfg[port].dpdk_mapping;
plogx_dbg("\tMaster received %s (%x) from mbuf %p\n", actions_string[command], command, mbuf);
+ struct my_arp_t *arp;
switch(command) {
- case ARP_TO_CTRL:
- if (hdr_arp->ether_hdr.ether_type != ETYPE_ARP) {
+ case BGP_TO_MASTER:
+ if (vdev_port != NO_VDEV_PORT) {
+ // If a virtual (net_tap) device is attached, send the (BGP) packet to this device
+ // The kernel will receive and handle it.
+ plogx_dbg("\tMaster forwarding BGP packet to TAP\n");
+ int n = rte_eth_tx_burst(prox_port_cfg[port].dpdk_mapping, 0, &mbuf, 1);
+ return;
+ }
+ tx_drop(mbuf);
+ break;
+ case ICMP_TO_MASTER:
+ if (vdev_port != NO_VDEV_PORT) {
+ // If a virtual (net_tap) device is attached, send the (PING) packet to this device
+ // The kernel will receive and handle it.
+ plogx_dbg("\tMaster forwarding packet to TAP\n");
+ int n = rte_eth_tx_burst(prox_port_cfg[port].dpdk_mapping, 0, &mbuf, 1);
+ return;
+ }
+ handle_icmp(tbase, mbuf);
+ break;
+ case ARP_PKT_FROM_NET_TO_MASTER:
+ if (vdev_port != NO_VDEV_PORT) {
+ // If a virtual (net_tap) device is attached, send the (ARP) packet to this device
+ // The kernel will receive and handle it.
+ plogx_dbg("\tMaster forwarding packet to TAP\n");
+ int n = rte_eth_tx_burst(prox_port_cfg[port].dpdk_mapping, 0, &mbuf, 1);
+ return;
+ }
+ ether_hdr = rte_pktmbuf_mtod(mbuf, prox_rte_ether_hdr *);
+ ether_type = ether_hdr->ether_type;
+ if (ether_type == ETYPE_VLAN) {
+ prox_rte_vlan_hdr *vlan_hdr = (prox_rte_vlan_hdr *)(ether_hdr + 1);
+ arp = (struct my_arp_t *)(vlan_hdr + 1);
+ ether_type = vlan_hdr->eth_proto;
+ } else {
+ arp = (struct my_arp_t *)(ether_hdr + 1);
+ }
+
+ if (ether_type != ETYPE_ARP) {
+ plog_err("\tUnexpected message received: ARP_PKT_FROM_NET_TO_MASTER with ether_type %x\n", ether_type);
tx_drop(mbuf);
- plog_err("\tUnexpected message received: ARP_TO_CTRL with ether_type %x\n", hdr_arp->ether_hdr.ether_type);
return;
- } else if (arp_is_gratuitous(hdr_arp)) {
+ }
+ if (arp_is_gratuitous(arp)) {
plog_info("\tReceived gratuitous packet \n");
tx_drop(mbuf);
return;
- } else if (memcmp(&hdr_arp->arp, &arp_reply, 8) == 0) {
- uint32_t ip = hdr_arp->arp.data.spa;
- handle_arp_reply(tbase, mbuf);
- } else if (memcmp(&hdr_arp->arp, &arp_request, 8) == 0) {
- handle_arp_request(tbase, mbuf);
+ } else if (memcmp(arp, &arp_reply, 8) == 0) {
+ // uint32_t ip = arp->data.spa;
+ handle_arp_reply(tbase, mbuf, arp);
+ } else if (memcmp(arp, &arp_request, 8) == 0) {
+ handle_arp_request(tbase, mbuf, arp);
} else {
- plog_info("\tReceived unexpected ARP operation %d\n", hdr_arp->arp.oper);
+ plog_info("\tReceived unexpected ARP operation %d\n", arp->oper);
tx_drop(mbuf);
return;
}
break;
- case REQ_MAC_TO_CTRL:
+ case IP4_REQ_MAC_TO_MASTER:
+ if (vdev_port != NO_VDEV_PORT) {
+ // We send a packet to the kernel with the proper destnation IP address and our src IP address
+ // This means that if a generator sends packets from many sources all ARP will still
+ // be sent from the same IP src. This might be a limitation.
+ // This prevent to have to open as many sockets as there are sources MAC addresses
+ // We also always use the same UDP ports - as the packet will finally not leave the system anyhow
+
+ struct ether_hdr_arp *hdr_arp = rte_pktmbuf_mtod(mbuf, struct ether_hdr_arp *);
+ uint32_t ip = get_ip(mbuf);
+ vlan = ctrl_ring_get_vlan(mbuf);
+ struct rte_ring *ring = task->ctrl_tx_rings[get_core(mbuf) * MAX_TASKS_PER_CORE + get_task(mbuf)];
+
+ // First check whether MAC address is not already in kernel MAC table.
+ // If present in our hash with a non-null MAC, then present in kernel. A null MAC
+ // might just mean that we sent a request.
+ // If MAC present in kernel, do not send a packet towards the kernel to try to generate
+ // an ARP request, as the kernel would not generate it.
+ int ret = rte_hash_lookup(task->external_ip_hash, (const void *)&ip);
+ if ((ret >= 0) && (!prox_rte_is_zero_ether_addr(&task->external_ip_table[ret].mac))) {
+ memcpy(&hdr_arp->arp.data.sha, &task->external_ip_table[ret].mac, sizeof(prox_rte_ether_addr));
+ plogx_dbg("\tMaster ready to send MAC_INFO_FROM_MASTER ip "IPv4_BYTES_FMT" with mac "MAC_BYTES_FMT"\n",
+ IP4(ip), MAC_BYTES(hdr_arp->arp.data.sha.addr_bytes));
+ tx_ring_ip(tbase, ring, MAC_INFO_FROM_MASTER, mbuf, ip);
+ return;
+ }
+
+ struct sockaddr_in dst;
+ dst.sin_family = AF_INET;
+ dst.sin_addr.s_addr = ip;
+ dst.sin_port = rte_cpu_to_be_16(PROX_PSEUDO_PKT_PORT);
+
+ int vlan_id;
+ for (vlan_id = 0; vlan_id < prox_port_cfg[vdev_port].n_vlans; vlan_id++) {
+ if (prox_port_cfg[vdev_port].vlan_tags[vlan_id] == vlan)
+ break;
+ }
+ if (vlan_id >= prox_port_cfg[vdev_port].n_vlans) {
+ // Tag not found
+ plogx_info("\tDid not send to TAP IP "IPv4_BYTES_FMT" as wrong VLAN %d\n", IPv4_BYTES(((uint8_t*)&ip)), vlan);
+ tx_drop(mbuf);
+ break;
+ }
+ int n = sendto(prox_port_cfg[vdev_port].fds[vlan_id], (char*)(&ip), 0, MSG_DONTROUTE, (struct sockaddr *)&dst, sizeof(struct sockaddr_in));
+ if (n < 0) {
+ plogx_info("\tFailed to send to TAP IP "IPv4_BYTES_FMT" using fd %d, error = %d (%s)\n", IPv4_BYTES(((uint8_t*)&ip)), prox_port_cfg[vdev_port].fds[vlan_id], errno, strerror(errno));
+ } else
+ plogx_dbg("\tSent %d bytes to TAP IP "IPv4_BYTES_FMT" using fd %d\n", n, IPv4_BYTES(((uint8_t*)&ip)), prox_port_cfg[vdev_port].fds[vlan_id]);
+
+ record_request(tbase, ip, port, ring);
+ tx_drop(mbuf);
+ break;
+ }
handle_unknown_ip(tbase, mbuf);
break;
+ case IP6_REQ_MAC_TO_MASTER:
+ handle_unknown_ip6(tbase, mbuf);
+ break;
+ case NDP_PKT_FROM_NET_TO_MASTER:
+ ether_hdr = rte_pktmbuf_mtod(mbuf, prox_rte_ether_hdr *);
+ prox_rte_ipv6_hdr *ipv6_hdr = prox_get_ipv6_hdr(ether_hdr, rte_pktmbuf_pkt_len(mbuf), &vlan);
+ if (unlikely((!ipv6_hdr) || (ipv6_hdr->proto != ICMPv6))) {
+ // Should not happen
+ if (!ipv6_hdr)
+ plog_err("\tUnexpected message received: NDP_PKT_FROM_NET_TO_MASTER with ether_type %x\n", ether_hdr->ether_type);
+ else
+ plog_err("\tUnexpected message received: NDP_PKT_FROM_NET_TO_MASTER with ether_type %x and proto %x\n", ether_hdr->ether_type, ipv6_hdr->proto);
+ tx_drop(mbuf);
+ return;
+ }
+ icmpv6 = (struct icmpv6 *)(ipv6_hdr + 1);
+ switch (icmpv6->type) {
+ case ICMPv6_DU:
+ plog_err("IPV6 ICMPV6 Destination Unreachable\n");
+ tx_drop(mbuf);
+ break;
+ case ICMPv6_PTB:
+ plog_err("IPV6 ICMPV6 packet too big\n");
+ tx_drop(mbuf);
+ break;
+ case ICMPv6_TE:
+ plog_err("IPV6 ICMPV6 Time Exceeded\n");
+ tx_drop(mbuf);
+ break;
+ case ICMPv6_PaPr:
+ plog_err("IPV6 ICMPV6 Parameter Problem\n");
+ tx_drop(mbuf);
+ break;
+ case ICMPv6_RS:
+ handle_rs(tbase, mbuf, ipv6_hdr, vlan);
+ break;
+ case ICMPv6_RA:
+ handle_ra(tbase, mbuf, ipv6_hdr, vlan);
+ break;
+ case ICMPv6_NS:
+ handle_ns(tbase, mbuf, ipv6_hdr, vlan);
+ break;
+ case ICMPv6_NA:
+ handle_na(tbase, mbuf, ipv6_hdr, vlan);
+ break;
+ case ICMPv6_RE:
+ plog_err("IPV6 ICMPV6 Redirect not handled\n");
+ tx_drop(mbuf);
+ break;
+ default:
+ plog_err("Unexpected type %d in IPV6 ICMPV6\n", icmpv6->type);
+ tx_drop(mbuf);
+ break;
+ }
+ break;
default:
plogx_dbg("\tMaster received unexpected message\n");
tx_drop(mbuf);
void init_ctrl_plane(struct task_base *tbase)
{
- prox_cfg.flags |= DSF_CTRL_PLANE_ENABLED;
struct task_master *task = (struct task_master *)tbase;
- int socket = rte_lcore_to_socket_id(prox_cfg.master);
+ int socket_id = rte_lcore_to_socket_id(prox_cfg.master);
uint32_t n_entries = MAX_ARP_ENTRIES * 4;
static char hash_name[30];
+
sprintf(hash_name, "A%03d_hash_arp_table", prox_cfg.master);
struct rte_hash_parameters hash_params = {
.name = hash_name,
.entries = n_entries,
- .key_len = sizeof(uint32_t),
.hash_func = rte_hash_crc,
.hash_func_init_val = 0,
+ .socket_id = socket_id,
};
- task->external_ip_hash = rte_hash_create(&hash_params);
- PROX_PANIC(task->external_ip_hash == NULL, "Failed to set up external ip hash\n");
- plog_info("\texternal ip hash table allocated, with %d entries of size %d\n", hash_params.entries, hash_params.key_len);
- task->external_ip_table = (struct external_ip_table *)prox_zmalloc(n_entries * sizeof(struct external_ip_table), socket);
- PROX_PANIC(task->external_ip_table == NULL, "Failed to allocate memory for %u entries in external ip table\n", n_entries);
- plog_info("\texternal ip table, with %d entries of size %ld\n", n_entries, sizeof(struct external_ip_table));
-
- hash_name[0]++;
- hash_params.key_len = sizeof(struct ip_port);
- task->internal_ip_hash = rte_hash_create(&hash_params);
- PROX_PANIC(task->internal_ip_hash == NULL, "Failed to set up internal ip hash\n");
- plog_info("\tinternal ip hash table allocated, with %d entries of size %d\n", hash_params.entries, hash_params.key_len);
- task->internal_ip_table = (struct ip_table *)prox_zmalloc(n_entries * sizeof(struct ip_table), socket);
- PROX_PANIC(task->internal_ip_table == NULL, "Failed to allocate memory for %u entries in internal ip table\n", n_entries);
- plog_info("\tinternal ip table, with %d entries of size %ld\n", n_entries, sizeof(struct ip_table));
+ if (prox_cfg.flags & DSF_L3_ENABLED) {
+ hash_params.key_len = sizeof(uint32_t);
+ task->external_ip_hash = rte_hash_create(&hash_params);
+ PROX_PANIC(task->external_ip_hash == NULL, "Failed to set up external ip hash\n");
+ plog_info("\texternal ip hash table allocated, with %d entries of size %d\n", hash_params.entries, hash_params.key_len);
+ hash_name[0]++;
+
+ task->external_ip_table = (struct external_ip_table *)prox_zmalloc(n_entries * sizeof(struct external_ip_table), socket_id);
+ PROX_PANIC(task->external_ip_table == NULL, "Failed to allocate memory for %u entries in external ip table\n", n_entries);
+ plog_info("\texternal ip table, with %d entries of size %ld\n", n_entries, sizeof(struct external_ip_table));
+
+ hash_params.key_len = sizeof(struct ip_port);
+ task->internal_ip_hash = rte_hash_create(&hash_params);
+ PROX_PANIC(task->internal_ip_hash == NULL, "Failed to set up internal ip hash\n");
+ plog_info("\tinternal ip hash table allocated, with %d entries of size %d\n", hash_params.entries, hash_params.key_len);
+ hash_name[0]++;
+
+ task->internal_ip_table = (struct ip_table *)prox_zmalloc(n_entries * sizeof(struct ip_table), socket_id);
+ PROX_PANIC(task->internal_ip_table == NULL, "Failed to allocate memory for %u entries in internal ip table\n", n_entries);
+ plog_info("\tinternal ip table, with %d entries of size %ld\n", n_entries, sizeof(struct ip_table));
+ }
+
+ if (prox_cfg.flags & DSF_NDP_ENABLED) {
+ hash_params.key_len = sizeof(struct ipv6_addr);
+ task->external_ip6_hash = rte_hash_create(&hash_params);
+ PROX_PANIC(task->external_ip6_hash == NULL, "Failed to set up external ip6 hash\n");
+ plog_info("\texternal ip6 hash table allocated, with %d entries of size %d\n", hash_params.entries, hash_params.key_len);
+ hash_name[0]++;
+
+ task->external_ip6_table = (struct external_ip_table *)prox_zmalloc(n_entries * sizeof(struct external_ip_table), socket_id);
+ PROX_PANIC(task->external_ip6_table == NULL, "Failed to allocate memory for %u entries in external ip6 table\n", n_entries);
+ plog_info("\texternal ip6_table, with %d entries of size %ld\n", n_entries, sizeof(struct external_ip_table));
+
+ hash_params.key_len = sizeof(struct ip6_port);
+ task->internal_ip6_hash = rte_hash_create(&hash_params);
+ PROX_PANIC(task->internal_ip6_hash == NULL, "Failed to set up internal ip6 hash\n");
+ plog_info("\tinternal ip6 hash table allocated, with %d entries of size %d\n", hash_params.entries, hash_params.key_len);
+ hash_name[0]++;
+
+ task->internal_ip6_table = (struct ip_table *)prox_zmalloc(n_entries * sizeof(struct ip_table), socket_id);
+ PROX_PANIC(task->internal_ip6_table == NULL, "Failed to allocate memory for %u entries in internal ip6 table\n", n_entries);
+ plog_info("\tinternal ip6 table, with %d entries of size %ld\n", n_entries, sizeof(struct ip_table));
+ }
+
+ int fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+ PROX_PANIC(fd < 0, "Failed to open netlink socket: %d\n", errno);
+ fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);
+
+ struct sockaddr_nl sockaddr;
+ memset(&sockaddr, 0, sizeof(struct sockaddr_nl));
+ sockaddr.nl_family = AF_NETLINK;
+ sockaddr.nl_groups = RTMGRP_NEIGH | RTMGRP_NOTIFY;
+ int rc = bind(fd, (struct sockaddr *)&sockaddr, sizeof(struct sockaddr_nl));
+ PROX_PANIC(rc < 0, "Failed to bind to RTMGRP_NEIGH netlink group\n");
+ task->arp_fds.fd = fd;
+ task->arp_fds.events = POLL_IN;
+ plog_info("\tRTMGRP_NEIGH netlink group bound; fd = %d\n", fd);
+
+ fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+ PROX_PANIC(fd < 0, "Failed to open netlink socket: %d\n", errno);
+ fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK);
+ struct sockaddr_nl sockaddr2;
+ memset(&sockaddr2, 0, sizeof(struct sockaddr_nl));
+ sockaddr2.nl_family = AF_NETLINK;
+ sockaddr2.nl_groups = RTMGRP_IPV4_ROUTE | RTMGRP_NOTIFY;
+ rc = bind(fd, (struct sockaddr *)&sockaddr2, sizeof(struct sockaddr_nl));
+ PROX_PANIC(rc < 0, "Failed to bind to RTMGRP_NEIGH netlink group\n");
+ task->route_fds.fd = fd;
+ task->route_fds.events = POLL_IN;
+ plog_info("\tRTMGRP_IPV4_ROUTE netlink group bound; fd = %d\n", fd);
+
+ static char name[] = "master_arp_nd_pool";
+ const int NB_ARP_MBUF = 1024;
+ const int ARP_MBUF_SIZE = 2048;
+ const int NB_CACHE_ARP_MBUF = 256;
+ struct rte_mempool *ret = rte_mempool_create(name, NB_ARP_MBUF, ARP_MBUF_SIZE, NB_CACHE_ARP_MBUF,
+ sizeof(struct rte_pktmbuf_pool_private), rte_pktmbuf_pool_init, NULL, rte_pktmbuf_init, 0,
+ rte_socket_id(), 0);
+ PROX_PANIC(ret == NULL, "Failed to allocate ARP memory pool on socket %u with %u elements\n",
+ rte_socket_id(), NB_ARP_MBUF);
+ plog_info("\tMempool %p (%s) size = %u * %u cache %u, socket %d\n", ret, name, NB_ARP_MBUF,
+ ARP_MBUF_SIZE, NB_CACHE_ARP_MBUF, rte_socket_id());
+ tbase->l3.arp_nd_pool = ret;
+}
+
+static void handle_route_event(struct task_base *tbase)
+{
+ struct task_master *task = (struct task_master *)tbase;
+ struct rte_mbuf *mbufs[MAX_RING_BURST];
+ int fd = task->route_fds.fd, interface_index, mask = -1;
+ char interface_name[IF_NAMESIZE] = {0};
+ int len = recv(fd, netlink_buf, sizeof(netlink_buf), 0);
+ uint32_t ip = 0, gw_ip = 0;
+ if (len < 0) {
+ plog_err("Failed to recv from netlink: %d\n", errno);
+ return;
+ }
+ struct nlmsghdr * nl_hdr = (struct nlmsghdr *)netlink_buf;
+ if (nl_hdr->nlmsg_flags & NLM_F_MULTI) {
+ plog_err("Unexpected multipart netlink message\n");
+ return;
+ }
+ if ((nl_hdr->nlmsg_type != RTM_NEWROUTE) && (nl_hdr->nlmsg_type != RTM_DELROUTE))
+ return;
+
+ struct rtmsg *rtmsg = (struct rtmsg *)NLMSG_DATA(nl_hdr);
+ int rtm_family = rtmsg->rtm_family;
+ if (rtm_family != AF_INET) {
+ plog_warn("Unhandled non IPV4 routing message\n");
+ return;
+ }
+ if ((rtmsg->rtm_table != RT_TABLE_MAIN) && (rtmsg->rtm_table != RT_TABLE_LOCAL))
+ return;
+ int dst_len = rtmsg->rtm_dst_len;
+
+ struct rtattr *rta = (struct rtattr *)RTM_RTA(rtmsg);
+ int rtl = RTM_PAYLOAD(nl_hdr);
+ for (; RTA_OK(rta, rtl); rta = RTA_NEXT(rta, rtl)) {
+ switch (rta->rta_type) {
+ case RTA_DST:
+ ip = *((uint32_t *)RTA_DATA(rta));
+ break;
+ case RTA_OIF:
+ interface_index = *((int *)RTA_DATA(rta));
+ if (if_indextoname(interface_index, interface_name) == NULL) {
+ plog_info("Unknown Interface Index %d\n", interface_index);
+ }
+ break;
+ case RTA_METRICS:
+ mask = *((int *)RTA_DATA(rta));
+ break;
+ case RTA_GATEWAY:
+ gw_ip = *((uint32_t *)RTA_DATA(rta));
+ break;
+ default:
+ break;
+ }
+ }
+ int dpdk_vdev_port = -1;
+ for (int i = 0; i< prox_rte_eth_dev_count_avail(); i++) {
+ for (int vlan_id = 0; vlan_id < prox_port_cfg[i].n_vlans; vlan_id++) {
+ if (strcmp(prox_port_cfg[i].names[vlan_id], interface_name) == 0) {
+ dpdk_vdev_port = i;
+ break;
+ }
+ }
+ if (dpdk_vdev_port != -1)
+ break;
+ }
+ if (dpdk_vdev_port != -1) {
+ plogx_info("Received netlink message on tap interface %s for IP "IPv4_BYTES_FMT"/%d, Gateway "IPv4_BYTES_FMT"\n", interface_name, IP4(ip), dst_len, IP4(gw_ip));
+ int ret1 = rte_mempool_get(tbase->l3.arp_nd_pool, (void **)mbufs);
+ if (unlikely(ret1 != 0)) {
+ plog_err("Unable to allocate a mbuf for master to core communication\n");
+ return;
+ }
+ int dpdk_port = prox_port_cfg[dpdk_vdev_port].dpdk_mapping;
+ tx_ring_route(tbase, task->internal_port_table[dpdk_port].ring, (nl_hdr->nlmsg_type == RTM_NEWROUTE), mbufs[0], ip, gw_ip, dst_len);
+ } else
+ plog_info("Received netlink message on unknown interface %s for IP "IPv4_BYTES_FMT"/%d, Gateway "IPv4_BYTES_FMT"\n", interface_name[0] ? interface_name:"", IP4(ip), dst_len, IP4(gw_ip));
+ return;
+}
+
+static void handle_arp_event(struct task_base *tbase)
+{
+ struct task_master *task = (struct task_master *)tbase;
+ struct rte_mbuf *mbufs[MAX_RING_BURST];
+ struct nlmsghdr * nl_hdr;
+ int fd = task->arp_fds.fd;
+ int len, ret;
+ uint32_t ip = 0;
+ prox_rte_ether_addr mac;
+ memset(&mac, 0, sizeof(mac));
+ len = recv(fd, netlink_buf, sizeof(netlink_buf), 0);
+ if (len < 0) {
+ plog_err("Failed to recv from netlink: %d\n", errno);
+ return;
+ }
+ nl_hdr = (struct nlmsghdr *)netlink_buf;
+ if (nl_hdr->nlmsg_flags & NLM_F_MULTI) {
+ plog_err("Unexpected multipart netlink message\n");
+ return;
+ }
+ if ((nl_hdr->nlmsg_type != RTM_NEWNEIGH) && (nl_hdr->nlmsg_type != RTM_DELNEIGH))
+ return;
+
+ struct ndmsg *ndmsg = (struct ndmsg *)NLMSG_DATA(nl_hdr);
+ int ndm_family = ndmsg->ndm_family;
+ struct rtattr *rta = (struct rtattr *)RTM_RTA(ndmsg);
+ int rtl = RTM_PAYLOAD(nl_hdr);
+ for (; RTA_OK(rta, rtl); rta = RTA_NEXT(rta, rtl)) {
+ switch (rta->rta_type) {
+ case NDA_DST:
+ ip = *((uint32_t *)RTA_DATA(rta));
+ break;
+ case NDA_LLADDR:
+ mac = *((prox_rte_ether_addr *)(uint64_t *)RTA_DATA(rta));
+ break;
+ default:
+ break;
+ }
+ }
+ plogx_info("Received netlink ip "IPv4_BYTES_FMT" with mac "MAC_BYTES_FMT"\n", IP4(ip), MAC_BYTES(mac.addr_bytes));
+ ret = rte_hash_lookup(task->external_ip_hash, (const void *)&ip);
+ if (unlikely(ret < 0)) {
+ // entry not found for this IP: we did not ask a request.
+ // This can happen if the kernel updated the ARP table when receiving an ARP_REQUEST
+ // We must record this, as the ARP entry is now in the kernel table
+ if (prox_rte_is_zero_ether_addr(&mac)) {
+ // Timeout or MAC deleted from kernel MAC table
+ int ret = rte_hash_del_key(task->external_ip_hash, (const void *)&ip);
+ plogx_dbg("ip "IPv4_BYTES_FMT" removed from external_ip_hash\n", IP4(ip));
+ return;
+ }
+ int ret = rte_hash_add_key(task->external_ip_hash, (const void *)&ip);
+ if (unlikely(ret < 0)) {
+ plogx_dbg("IP "IPv4_BYTES_FMT" not found in external_ip_hash and unable to add it\n", IP4(ip));
+ return;
+ }
+ memcpy(&task->external_ip_table[ret].mac, &mac, sizeof(prox_rte_ether_addr));
+ plogx_dbg("ip "IPv4_BYTES_FMT" added in external_ip_hash with mac "MAC_BYTES_FMT"\n", IP4(ip), MAC_BYTES(mac.addr_bytes));
+ return;
+ }
+
+ // entry found for this IP
+ uint16_t nb_requests = task->external_ip_table[ret].nb_requests;
+ if (nb_requests == 0) {
+ return;
+ }
+
+ memcpy(&task->external_ip_table[ret].mac, &mac, sizeof(prox_rte_ether_addr));
+
+ // If we receive a request from multiple task for the same IP, then we update all tasks
+ int ret1 = rte_mempool_get(tbase->l3.arp_nd_pool, (void **)mbufs);
+ if (unlikely(ret1 != 0)) {
+ plog_err("Unable to allocate a mbuf for master to core communication\n");
+ return;
+ }
+ rte_mbuf_refcnt_set(mbufs[0], nb_requests);
+ for (int i = 0; i < nb_requests; i++) {
+ struct rte_ring *ring = task->external_ip_table[ret].rings[i];
+ struct ether_hdr_arp *hdr = rte_pktmbuf_mtod(mbufs[0], struct ether_hdr_arp *);
+ memcpy(&hdr->arp.data.sha, &mac, sizeof(prox_rte_ether_addr));
+ tx_ring_ip(tbase, ring, MAC_INFO_FROM_MASTER, mbufs[0], ip);
+ plog_dbg("MAC_INFO_FROM_MASTER ip "IPv4_BYTES_FMT" with mac "MAC_BYTES_FMT"\n", IP4(ip), MAC_BYTES(mac.addr_bytes));
+ }
+ task->external_ip_table[ret].nb_requests = 0;
+ return;
}
static int handle_ctrl_plane_f(struct task_base *tbase, __attribute__((unused)) struct rte_mbuf **mbuf, uint16_t n_pkts)
{
- int ring_id, j, ret = 0;
+ int ring_id = 0, j, ret = 0, n = 0;
struct rte_mbuf *mbufs[MAX_RING_BURST];
struct task_master *task = (struct task_master *)tbase;
for (j = 0; j < ret; j++) {
handle_message(tbase, mbufs[j], ring_id);
}
+ for (int vdev_id = 0; vdev_id < task->max_vdev_id; vdev_id++) {
+ struct vdev *vdev = &task->all_vdev[vdev_id];
+ n = rte_eth_rx_burst(vdev->port_id, 0, mbufs, MAX_PKT_BURST);
+ for (j = 0; j < n; j++) {
+ tx_ring(tbase, vdev->ring, PKT_FROM_TAP, mbufs[j]);
+ }
+ ret +=n;
+ }
+ if ((task->max_vdev_id) && (poll(&task->arp_fds, 1, prox_cfg.poll_timeout) == POLL_IN)) {
+ handle_arp_event(tbase);
+ }
+ if (poll(&task->route_fds, 1, prox_cfg.poll_timeout) == POLL_IN) {
+ handle_route_event(tbase);
+ }
return ret;
}
Code Review / samplevnf.git / blobdiff