int
dpdk_packet_socket_init(void)
{
unsigned lcore_id;
struct vr_dpdk_lcore *lcorep;
void *event_sock = NULL;
int err;
vr_dpdk.packet_transport = (void *)vr_usocket(PACKET, RAW);
if (!vr_dpdk.packet_transport)
return -1;
if (!vr_dpdk.packet_ring) {
vr_dpdk.packet_ring = rte_ring_lookup("pkt0_tx");
if (!vr_dpdk.packet_ring) {
/* multi-producers single-consumer ring */
vr_dpdk.packet_ring = rte_ring_create("pkt0_tx", VR_DPDK_TX_RING_SZ,
SOCKET_ID_ANY, RING_F_SC_DEQ);
if (!vr_dpdk.packet_ring) {
RTE_LOG(ERR, VROUTER, " error creating pkt0 ring\n");
goto error;
}
}
}
/* socket events to wake up the pkt0 lcore */
RTE_LCORE_FOREACH(lcore_id) {
lcorep = vr_dpdk.lcores[lcore_id];
event_sock = (void *)vr_usocket(EVENT, RAW);
if (!event_sock) {
goto error;
}
if (vr_usocket_bind_usockets(vr_dpdk.packet_transport,
event_sock))
goto error;
lcorep->lcore_event_sock = event_sock;
}
return 0;
error:
err = errno;
if (event_sock)
vr_usocket_close(event_sock);
vr_usocket_close(vr_dpdk.packet_transport);
vr_dpdk.packet_transport = NULL;
errno = err;
return -ENOMEM;
}
int
dpdk_packet_socket_init(void)
{
void *event_sock = NULL;
int err;
vr_dpdk.packet_transport = (void *)vr_usocket(PACKET, RAW);
if (!vr_dpdk.packet_transport)
return -1;
if (!vr_dpdk.packet_ring) {
vr_dpdk.packet_ring = rte_ring_lookup("packet_tx");
if (!vr_dpdk.packet_ring) {
/* multi-producers single-consumer ring */
vr_dpdk.packet_ring = rte_ring_create("packet_tx", VR_DPDK_TX_RING_SZ,
SOCKET_ID_ANY, RING_F_SC_DEQ);
if (!vr_dpdk.packet_ring) {
RTE_LOG(ERR, VROUTER, " error creating packet ring\n");
goto error;
}
}
}
/* create and bind event usock to wake up the packet lcore */
event_sock = (void *)vr_usocket(EVENT, RAW);
if (!event_sock) {
RTE_LOG(ERR, VROUTER, " error creating packet event\n");
goto error;
}
if (vr_usocket_bind_usockets(vr_dpdk.packet_transport,
event_sock)) {
RTE_LOG(ERR, VROUTER, " error binding packet event\n");
goto error;
}
vr_dpdk.packet_event_sock = event_sock;
return 0;
error:
err = errno;
if (event_sock)
vr_usocket_close(event_sock);
vr_usocket_close(vr_dpdk.packet_transport);
vr_dpdk.packet_transport = NULL;
errno = err;
return -ENOMEM;
}
void
vr_dpdk_packet_wakeup(struct vr_interface *vif)
{
struct vr_interface_stats *stats;
struct vrouter *router;
if (unlikely(vif == NULL)) {
/* get global agent vif */
router = vrouter_get(0);
vif = router->vr_agent_if;
}
if (likely(vr_dpdk.packet_event_sock != NULL)) {
if (likely(vif != NULL)) {
stats = vif_get_stats(vif, rte_lcore_id());
stats->vis_port_osyscalls++;
} else {
/* no agent interface - no counter */
}
if (vr_usocket_eventfd_write(vr_dpdk.packet_event_sock) < 0) {
vr_usocket_close(vr_dpdk.packet_event_sock);
vr_dpdk.packet_event_sock = NULL;
}
}
}
void
vr_dpdk_netlink_wakeup(void)
{
if (likely(vr_dpdk.netlink_event_sock != NULL)) {
if (vr_usocket_eventfd_write(vr_dpdk.netlink_event_sock) < 0) {
vr_usocket_close(vr_dpdk.netlink_event_sock);
vr_dpdk.netlink_event_sock = NULL;
}
}
}
void
dpdk_netlink_exit(void)
{
vr_message_transport_unregister(&dpdk_nl_transport);
vr_usocket_close(vr_dpdk.netlink_sock);
vr_dpdk.netlink_sock = NULL;
vr_dpdk.netlink_event_sock = NULL;
return;
}
static void
dpdk_nl_process_response(void *usockp, struct nlmsghdr *nlh)
{
__u32 seq;
unsigned int multi_flag = 0;
bool write = true;
struct vr_message *resp;
struct nlmsghdr *resp_nlh;
struct genlmsghdr *genlh, *resp_genlh;
struct nlattr *resp_nla;
seq = nlh->nlmsg_seq;
genlh = (struct genlmsghdr *)((unsigned char *)nlh + NLMSG_HDRLEN);
/* Process responses */
while ((resp = (struct vr_message *)vr_message_dequeue_response())) {
if (!write) {
vr_message_free(resp);
continue;
}
if (!vr_response_queue_empty()) {
multi_flag = NLM_F_MULTI;
} else {
multi_flag = 0;
}
/* Update Netlink headers */
resp_nlh = dpdk_nl_message_hdr(resp);
resp_nlh->nlmsg_len = dpdk_nl_message_len(resp);
resp_nlh->nlmsg_type = nlh->nlmsg_type;
resp_nlh->nlmsg_flags = multi_flag;
resp_nlh->nlmsg_seq = seq;
resp_nlh->nlmsg_pid = 0;
resp_genlh = (struct genlmsghdr *)((unsigned char *)resp_nlh +
NLMSG_HDRLEN);
memcpy(resp_genlh, genlh, sizeof(*genlh));
resp_nla = (struct nlattr *)((unsigned char *)resp_genlh + GENL_HDRLEN);
resp_nla->nla_len = resp->vr_message_len;
resp_nla->nla_type = NL_ATTR_VR_MESSAGE_PROTOCOL;
if (vr_usocket_message_write(usockp, resp) < 0) {
write = false;
vr_usocket_close(usockp);
}
}
return;
}
/* Init NetLink and UVHost sockets */
int
vr_dpdk_netlink_init(void)
{
void *event_sock = NULL;
int ret;
RTE_LOG(INFO, VROUTER, "Starting NetLink...\n");
ret = vr_message_transport_register(&dpdk_nl_transport);
if (ret)
return ret;
#ifdef AGENT_VROUTER_TCP
vr_dpdk.netlink_sock = vr_usocket(NETLINK, TCP);
#else
vr_dpdk.netlink_sock = vr_usocket(NETLINK, UNIX);
#endif
if (!vr_dpdk.netlink_sock) {
RTE_LOG(ERR, VROUTER, " error creating NetLink server socket:"
" %s (%d)\n", rte_strerror(errno), errno);
goto error;
}
RTE_LOG(INFO, VROUTER, " NetLink TCP socket FD is %d\n",
((struct vr_usocket *)vr_dpdk.netlink_sock)->usock_fd);
ret = vr_nl_uvhost_connect();
if (ret != 0) {
RTE_LOG(ERR, VROUTER, " error creating uvhost connection\n");
goto error;
}
/* create and bind event usock to wake up the NetLink lcore */
event_sock = (void *)vr_usocket(EVENT, RAW);
if (!event_sock) {
RTE_LOG(ERR, VROUTER, " error creating NetLink event\n");
goto error;
}
if (vr_usocket_bind_usockets(vr_dpdk.netlink_sock,
event_sock)) {
RTE_LOG(ERR, VROUTER, " error binding NetLink event\n");
goto error;
}
vr_dpdk.netlink_event_sock = event_sock;
return 0;
error:
vr_message_transport_unregister(&dpdk_nl_transport);
vr_usocket_close(vr_dpdk.netlink_sock);
return -1;
}
void
vr_dpdk_packet_wakeup(void)
{
/* to wake up pkt0 thread we always use current lcore event sock */
struct vr_dpdk_lcore *lcorep = vr_dpdk.lcores[rte_lcore_id()];
if (likely(lcorep->lcore_event_sock != NULL)) {
if (vr_usocket_eventfd_write(lcorep->lcore_event_sock) < 0) {
vr_usocket_close(lcorep->lcore_event_sock);
lcorep->lcore_event_sock = NULL;
}
}
}
void
dpdk_packet_socket_close(void)
{
if (!vr_dpdk.packet_transport)
return;
/* close and free up the memory both for packet usock and binded event usock */
vr_usocket_close(vr_dpdk.packet_transport);
vr_dpdk_packet_wakeup(NULL);
vr_dpdk.packet_transport = NULL;
vr_dpdk.packet_event_sock = NULL;
return;
}
void
dpdk_packet_socket_close(void)
{
void *usockp;
if (!vr_dpdk.packet_transport)
return;
usockp = vr_dpdk.packet_transport;
vr_dpdk.packet_transport = NULL;
vr_usocket_close(usockp);
return;
}
