diff options
Diffstat (limited to 'src/proto_quic.c')
| -rw-r--r-- | src/proto_quic.c | 799 |
1 files changed, 799 insertions, 0 deletions
diff --git a/src/proto_quic.c b/src/proto_quic.c new file mode 100644 index 0000000..899cffe --- /dev/null +++ b/src/proto_quic.c @@ -0,0 +1,799 @@ +/* + * AF_INET/AF_INET6 QUIC protocol layer. + * + * Copyright 2020 Frederic Lecaille <flecaille@haproxy.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + */ + +#include <ctype.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> + +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/types.h> + +#include <netinet/udp.h> +#include <netinet/in.h> + +#include <import/ebtree-t.h> + +#include <haproxy/api.h> +#include <haproxy/arg.h> +#include <haproxy/cbuf.h> +#include <haproxy/connection.h> +#include <haproxy/errors.h> +#include <haproxy/fd.h> +#include <haproxy/global.h> +#include <haproxy/list.h> +#include <haproxy/listener.h> +#include <haproxy/log.h> +#include <haproxy/namespace.h> +#include <haproxy/port_range.h> +#include <haproxy/protocol.h> +#include <haproxy/proto_quic.h> +#include <haproxy/proto_udp.h> +#include <haproxy/proxy-t.h> +#include <haproxy/quic_conn.h> +#include <haproxy/quic_sock.h> +#include <haproxy/sock.h> +#include <haproxy/sock_inet.h> +#include <haproxy/task.h> +#include <haproxy/tools.h> + +/* per-thread quic datagram handlers */ +struct quic_dghdlr *quic_dghdlrs; +struct eb_root *quic_cid_tree; + +/* global CID trees */ +#define QUIC_CID_TREES_CNT 256 +struct quic_cid_tree *quic_cid_trees; + +/* Size of the internal buffer of QUIC RX buffer at the fd level */ +#define QUIC_RX_BUFSZ (1UL << 18) + +DECLARE_STATIC_POOL(pool_head_quic_rxbuf, "quic_rxbuf", QUIC_RX_BUFSZ); + +static int quic_bind_listener(struct listener *listener, char *errmsg, int errlen); +static int quic_connect_server(struct connection *conn, int flags); +static void quic_enable_listener(struct listener *listener); +static void quic_disable_listener(struct listener *listener); +static int quic_set_affinity(struct connection *conn, int new_tid); + +/* Note: must not be declared <const> as its list will be overwritten */ +struct protocol proto_quic4 = { + .name = "quic4", + + /* connection layer */ + .xprt_type = PROTO_TYPE_STREAM, + .listen = quic_bind_listener, + .enable = quic_enable_listener, + .disable = quic_disable_listener, + .add = default_add_listener, + .unbind = default_unbind_listener, + .suspend = default_suspend_listener, + .resume = default_resume_listener, + .accept_conn = quic_sock_accept_conn, + .get_src = quic_sock_get_src, + .get_dst = quic_sock_get_dst, + .connect = quic_connect_server, + .set_affinity = quic_set_affinity, + + /* binding layer */ + .rx_suspend = udp_suspend_receiver, + .rx_resume = udp_resume_receiver, + + /* address family */ + .fam = &proto_fam_inet4, + + /* socket layer */ + .proto_type = PROTO_TYPE_DGRAM, + .sock_type = SOCK_DGRAM, + .sock_prot = IPPROTO_UDP, + .rx_enable = sock_enable, + .rx_disable = sock_disable, + .rx_unbind = sock_unbind, + .rx_listening = quic_sock_accepting_conn, + .default_iocb = quic_lstnr_sock_fd_iocb, + .receivers = LIST_HEAD_INIT(proto_quic4.receivers), + .nb_receivers = 0, +#ifdef SO_REUSEPORT + .flags = PROTO_F_REUSEPORT_SUPPORTED, +#endif +}; + +INITCALL1(STG_REGISTER, protocol_register, &proto_quic4); + +/* Note: must not be declared <const> as its list will be overwritten */ +struct protocol proto_quic6 = { + .name = "quic6", + + /* connection layer */ + .xprt_type = PROTO_TYPE_STREAM, + .listen = quic_bind_listener, + .enable = quic_enable_listener, + .disable = quic_disable_listener, + .add = default_add_listener, + .unbind = default_unbind_listener, + .suspend = default_suspend_listener, + .resume = default_resume_listener, + .accept_conn = quic_sock_accept_conn, + .get_src = quic_sock_get_src, + .get_dst = quic_sock_get_dst, + .connect = quic_connect_server, + .set_affinity = quic_set_affinity, + + /* binding layer */ + .rx_suspend = udp_suspend_receiver, + .rx_resume = udp_resume_receiver, + + /* address family */ + .fam = &proto_fam_inet6, + + /* socket layer */ + .proto_type = PROTO_TYPE_DGRAM, + .sock_type = SOCK_DGRAM, + .sock_prot = IPPROTO_UDP, + .rx_enable = sock_enable, + .rx_disable = sock_disable, + .rx_unbind = sock_unbind, + .rx_listening = quic_sock_accepting_conn, + .default_iocb = quic_lstnr_sock_fd_iocb, + .receivers = LIST_HEAD_INIT(proto_quic6.receivers), + .nb_receivers = 0, +#ifdef SO_REUSEPORT + .flags = PROTO_F_REUSEPORT_SUPPORTED, +#endif +}; + +INITCALL1(STG_REGISTER, protocol_register, &proto_quic6); + +/* Binds ipv4/ipv6 address <local> to socket <fd>, unless <flags> is set, in which + * case we try to bind <remote>. <flags> is a 2-bit field consisting of : + * - 0 : ignore remote address (may even be a NULL pointer) + * - 1 : use provided address + * - 2 : use provided port + * - 3 : use both + * + * The function supports multiple foreign binding methods : + * - linux_tproxy: we directly bind to the foreign address + * The second one can be used as a fallback for the first one. + * This function returns 0 when everything's OK, 1 if it could not bind, to the + * local address, 2 if it could not bind to the foreign address. + */ +int quic_bind_socket(int fd, int flags, struct sockaddr_storage *local, struct sockaddr_storage *remote) +{ + struct sockaddr_storage bind_addr; + int foreign_ok = 0; + int ret; + static THREAD_LOCAL int ip_transp_working = 1; + static THREAD_LOCAL int ip6_transp_working = 1; + + switch (local->ss_family) { + case AF_INET: + if (flags && ip_transp_working) { + /* This deserves some explanation. Some platforms will support + * multiple combinations of certain methods, so we try the + * supported ones until one succeeds. + */ + if (sock_inet4_make_foreign(fd)) + foreign_ok = 1; + else + ip_transp_working = 0; + } + break; + case AF_INET6: + if (flags && ip6_transp_working) { + if (sock_inet6_make_foreign(fd)) + foreign_ok = 1; + else + ip6_transp_working = 0; + } + break; + } + + if (flags) { + memset(&bind_addr, 0, sizeof(bind_addr)); + bind_addr.ss_family = remote->ss_family; + switch (remote->ss_family) { + case AF_INET: + if (flags & 1) + ((struct sockaddr_in *)&bind_addr)->sin_addr = ((struct sockaddr_in *)remote)->sin_addr; + if (flags & 2) + ((struct sockaddr_in *)&bind_addr)->sin_port = ((struct sockaddr_in *)remote)->sin_port; + break; + case AF_INET6: + if (flags & 1) + ((struct sockaddr_in6 *)&bind_addr)->sin6_addr = ((struct sockaddr_in6 *)remote)->sin6_addr; + if (flags & 2) + ((struct sockaddr_in6 *)&bind_addr)->sin6_port = ((struct sockaddr_in6 *)remote)->sin6_port; + break; + default: + /* we don't want to try to bind to an unknown address family */ + foreign_ok = 0; + } + } + + setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)); + if (foreign_ok) { + if (is_inet_addr(&bind_addr)) { + ret = bind(fd, (struct sockaddr *)&bind_addr, get_addr_len(&bind_addr)); + if (ret < 0) + return 2; + } + } + else { + if (is_inet_addr(local)) { + ret = bind(fd, (struct sockaddr *)local, get_addr_len(local)); + if (ret < 0) + return 1; + } + } + + if (!flags) + return 0; + + if (!foreign_ok) + /* we could not bind to a foreign address */ + return 2; + + return 0; +} + +/* + * This function initiates a QUIC connection establishment to the target assigned + * to connection <conn> using (si->{target,dst}). A source address may be + * pointed to by conn->src in case of transparent proxying. Normal source + * bind addresses are still determined locally (due to the possible need of a + * source port). conn->target may point either to a valid server or to a backend, + * depending on conn->target. Only OBJ_TYPE_PROXY and OBJ_TYPE_SERVER are + * supported. The <data> parameter is a boolean indicating whether there are data + * waiting for being sent or not, in order to adjust data write polling and on + * some platforms, the ability to avoid an empty initial ACK. The <flags> argument + * is not used. + * + * Note that a pending send_proxy message accounts for data. + * + * It can return one of : + * - SF_ERR_NONE if everything's OK + * - SF_ERR_SRVTO if there are no more servers + * - SF_ERR_SRVCL if the connection was refused by the server + * - SF_ERR_PRXCOND if the connection has been limited by the proxy (maxconn) + * - SF_ERR_RESOURCE if a system resource is lacking (eg: fd limits, ports, ...) + * - SF_ERR_INTERNAL for any other purely internal errors + * Additionally, in the case of SF_ERR_RESOURCE, an emergency log will be emitted. + * + * The connection's fd is inserted only when SF_ERR_NONE is returned, otherwise + * it's invalid and the caller has nothing to do. + */ + +int quic_connect_server(struct connection *conn, int flags) +{ + int fd; + struct server *srv; + struct proxy *be; + struct conn_src *src; + struct sockaddr_storage *addr; + + BUG_ON(!conn->dst); + + conn->flags |= CO_FL_WAIT_L4_CONN; /* connection in progress */ + + switch (obj_type(conn->target)) { + case OBJ_TYPE_PROXY: + be = __objt_proxy(conn->target); + srv = NULL; + break; + case OBJ_TYPE_SERVER: + srv = __objt_server(conn->target); + be = srv->proxy; + break; + default: + conn->flags |= CO_FL_ERROR; + return SF_ERR_INTERNAL; + } + + fd = conn->handle.fd = sock_create_server_socket(conn); + + if (fd == -1) { + qfprintf(stderr, "Cannot get a server socket.\n"); + + if (errno == ENFILE) { + conn->err_code = CO_ER_SYS_FDLIM; + send_log(be, LOG_EMERG, + "Proxy %s reached system FD limit (maxsock=%d). Please check system tunables.\n", + be->id, global.maxsock); + } + else if (errno == EMFILE) { + conn->err_code = CO_ER_PROC_FDLIM; + send_log(be, LOG_EMERG, + "Proxy %s reached process FD limit (maxsock=%d). Please check 'ulimit-n' and restart.\n", + be->id, global.maxsock); + } + else if (errno == ENOBUFS || errno == ENOMEM) { + conn->err_code = CO_ER_SYS_MEMLIM; + send_log(be, LOG_EMERG, + "Proxy %s reached system memory limit (maxsock=%d). Please check system tunables.\n", + be->id, global.maxsock); + } + else if (errno == EAFNOSUPPORT || errno == EPROTONOSUPPORT) { + conn->err_code = CO_ER_NOPROTO; + } + else + conn->err_code = CO_ER_SOCK_ERR; + + /* this is a resource error */ + conn->flags |= CO_FL_ERROR; + return SF_ERR_RESOURCE; + } + + if (fd >= global.maxsock) { + /* do not log anything there, it's a normal condition when this option + * is used to serialize connections to a server ! + */ + ha_alert("socket(): not enough free sockets. Raise -n argument. Giving up.\n"); + close(fd); + conn->err_code = CO_ER_CONF_FDLIM; + conn->flags |= CO_FL_ERROR; + return SF_ERR_PRXCOND; /* it is a configuration limit */ + } + + if (fd_set_nonblock(fd) == -1) { + qfprintf(stderr,"Cannot set client socket to non blocking mode.\n"); + close(fd); + conn->err_code = CO_ER_SOCK_ERR; + conn->flags |= CO_FL_ERROR; + return SF_ERR_INTERNAL; + } + + if (master == 1 && fd_set_cloexec(fd) == -1) { + ha_alert("Cannot set CLOEXEC on client socket.\n"); + close(fd); + conn->err_code = CO_ER_SOCK_ERR; + conn->flags |= CO_FL_ERROR; + return SF_ERR_INTERNAL; + } + + /* allow specific binding : + * - server-specific at first + * - proxy-specific next + */ + if (srv && srv->conn_src.opts & CO_SRC_BIND) + src = &srv->conn_src; + else if (be->conn_src.opts & CO_SRC_BIND) + src = &be->conn_src; + else + src = NULL; + + if (src) { + int ret, flags = 0; + + if (conn->src && is_inet_addr(conn->src)) { + switch (src->opts & CO_SRC_TPROXY_MASK) { + case CO_SRC_TPROXY_CLI: + conn_set_private(conn); + __fallthrough; + case CO_SRC_TPROXY_ADDR: + flags = 3; + break; + case CO_SRC_TPROXY_CIP: + case CO_SRC_TPROXY_DYN: + conn_set_private(conn); + flags = 1; + break; + } + } + +#ifdef SO_BINDTODEVICE + /* Note: this might fail if not CAP_NET_RAW */ + if (src->iface_name) + setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, src->iface_name, src->iface_len + 1); +#endif + + if (src->sport_range) { + int attempts = 10; /* should be more than enough to find a spare port */ + struct sockaddr_storage sa; + + ret = 1; + memcpy(&sa, &src->source_addr, sizeof(sa)); + + do { + /* note: in case of retry, we may have to release a previously + * allocated port, hence this loop's construct. + */ + port_range_release_port(fdinfo[fd].port_range, fdinfo[fd].local_port); + fdinfo[fd].port_range = NULL; + + if (!attempts) + break; + attempts--; + + fdinfo[fd].local_port = port_range_alloc_port(src->sport_range); + if (!fdinfo[fd].local_port) { + conn->err_code = CO_ER_PORT_RANGE; + break; + } + + fdinfo[fd].port_range = src->sport_range; + set_host_port(&sa, fdinfo[fd].local_port); + + ret = quic_bind_socket(fd, flags, &sa, conn->src); + if (ret != 0) + conn->err_code = CO_ER_CANT_BIND; + } while (ret != 0); /* binding NOK */ + } + else { +#ifdef IP_BIND_ADDRESS_NO_PORT + static THREAD_LOCAL int bind_address_no_port = 1; + setsockopt(fd, IPPROTO_IP, IP_BIND_ADDRESS_NO_PORT, (const void *) &bind_address_no_port, sizeof(int)); +#endif + ret = quic_bind_socket(fd, flags, &src->source_addr, conn->src); + if (ret != 0) + conn->err_code = CO_ER_CANT_BIND; + } + + if (unlikely(ret != 0)) { + port_range_release_port(fdinfo[fd].port_range, fdinfo[fd].local_port); + fdinfo[fd].port_range = NULL; + close(fd); + + if (ret == 1) { + ha_alert("Cannot bind to source address before connect() for backend %s. Aborting.\n", + be->id); + send_log(be, LOG_EMERG, + "Cannot bind to source address before connect() for backend %s.\n", + be->id); + } else { + ha_alert("Cannot bind to tproxy source address before connect() for backend %s. Aborting.\n", + be->id); + send_log(be, LOG_EMERG, + "Cannot bind to tproxy source address before connect() for backend %s.\n", + be->id); + } + conn->flags |= CO_FL_ERROR; + return SF_ERR_RESOURCE; + } + } + + if (global.tune.server_sndbuf) + setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &global.tune.server_sndbuf, sizeof(global.tune.server_sndbuf)); + + if (global.tune.server_rcvbuf) + setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &global.tune.server_rcvbuf, sizeof(global.tune.server_rcvbuf)); + + addr = (conn->flags & CO_FL_SOCKS4) ? &srv->socks4_addr : conn->dst; + if (connect(fd, (const struct sockaddr *)addr, get_addr_len(addr)) == -1) { + if (errno == EINPROGRESS || errno == EALREADY) { + /* common case, let's wait for connect status */ + conn->flags |= CO_FL_WAIT_L4_CONN; + } + else if (errno == EISCONN) { + /* should normally not happen but if so, indicates that it's OK */ + conn->flags &= ~CO_FL_WAIT_L4_CONN; + } + else if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EADDRINUSE || errno == EADDRNOTAVAIL) { + char *msg; + if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EADDRNOTAVAIL) { + msg = "no free ports"; + conn->err_code = CO_ER_FREE_PORTS; + } + else { + msg = "local address already in use"; + conn->err_code = CO_ER_ADDR_INUSE; + } + + qfprintf(stderr,"Connect() failed for backend %s: %s.\n", be->id, msg); + port_range_release_port(fdinfo[fd].port_range, fdinfo[fd].local_port); + fdinfo[fd].port_range = NULL; + close(fd); + send_log(be, LOG_ERR, "Connect() failed for backend %s: %s.\n", be->id, msg); + conn->flags |= CO_FL_ERROR; + return SF_ERR_RESOURCE; + } else if (errno == ETIMEDOUT) { + //qfprintf(stderr,"Connect(): ETIMEDOUT"); + port_range_release_port(fdinfo[fd].port_range, fdinfo[fd].local_port); + fdinfo[fd].port_range = NULL; + close(fd); + conn->err_code = CO_ER_SOCK_ERR; + conn->flags |= CO_FL_ERROR; + return SF_ERR_SRVTO; + } else { + // (errno == ECONNREFUSED || errno == ENETUNREACH || errno == EACCES || errno == EPERM) + //qfprintf(stderr,"Connect(): %d", errno); + port_range_release_port(fdinfo[fd].port_range, fdinfo[fd].local_port); + fdinfo[fd].port_range = NULL; + close(fd); + conn->err_code = CO_ER_SOCK_ERR; + conn->flags |= CO_FL_ERROR; + return SF_ERR_SRVCL; + } + } + else { + /* connect() == 0, this is great! */ + conn->flags &= ~CO_FL_WAIT_L4_CONN; + } + + conn_ctrl_init(conn); /* registers the FD */ + HA_ATOMIC_OR(&fdtab[fd].state, FD_LINGER_RISK); /* close hard if needed */ + + if (conn->flags & CO_FL_WAIT_L4_CONN) { + fd_want_send(fd); + fd_cant_send(fd); + fd_cant_recv(fd); + } + + return SF_ERR_NONE; /* connection is OK */ +} + +/* Allocate the RX buffers for <l> listener. + * Return 1 if succeeded, 0 if not. + */ +static int quic_alloc_rxbufs_listener(struct listener *l) +{ + int i; + struct quic_receiver_buf *tmp; + + MT_LIST_INIT(&l->rx.rxbuf_list); + for (i = 0; i < my_popcountl(l->rx.bind_thread); i++) { + struct quic_receiver_buf *rxbuf; + char *buf; + + rxbuf = calloc(1, sizeof(*rxbuf)); + if (!rxbuf) + goto err; + + buf = pool_alloc(pool_head_quic_rxbuf); + if (!buf) { + free(rxbuf); + goto err; + } + + rxbuf->buf = b_make(buf, QUIC_RX_BUFSZ, 0, 0); + LIST_INIT(&rxbuf->dgram_list); + MT_LIST_APPEND(&l->rx.rxbuf_list, &rxbuf->rxbuf_el); + } + + return 1; + + err: + while ((tmp = MT_LIST_POP(&l->rx.rxbuf_list, typeof(tmp), rxbuf_el))) { + pool_free(pool_head_quic_rxbuf, tmp->buf.area); + free(tmp); + } + return 0; +} + +/* Check if platform supports the required feature set for quic-conn owned + * socket. <l> listener must already be binded; a dummy socket will be opened + * on the same address as one of the support test. + * + * Returns true if platform is deemed compatible else false. + */ +static int quic_test_sock_per_conn_support(struct listener *l) +{ + const struct receiver *rx = &l->rx; + int ret = 1, fdtest; + + /* Check if IP destination address can be retrieved on recvfrom() + * operation. + */ +#if !defined(IP_PKTINFO) && !defined(IP_RECVDSTADDR) + ha_alert("Your platform does not seem to support UDP source address retrieval through IP_PKTINFO or an alternative flag. " + "QUIC connections will use listener socket.\n"); + ret = 0; +#endif + + /* Check if platform support multiple UDP sockets bind on the same + * local address. Create a dummy socket and bind it on the same address + * as <l> listener. If bind system call fails, deactivate socket per + * connection. All other errors are not taken into account. + */ + if (ret) { + fdtest = socket(rx->proto->fam->sock_domain, + rx->proto->sock_type, rx->proto->sock_prot); + if (fdtest >= 0) { + if (setsockopt(fdtest, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) && + bind(fdtest, (struct sockaddr *)&rx->addr, rx->proto->fam->sock_addrlen) < 0) { + ha_alert("Your platform does not seem to support multiple UDP sockets binded on the same address. " + "QUIC connections will use listener socket.\n"); + ret = 0; + } + + close(fdtest); + } + } + + return ret; +} + +/* This function tries to bind a QUIC4/6 listener. It may return a warning or + * an error message in <errmsg> if the message is at most <errlen> bytes long + * (including '\0'). Note that <errmsg> may be NULL if <errlen> is also zero. + * The return value is composed from ERR_ABORT, ERR_WARN, + * ERR_ALERT, ERR_RETRYABLE and ERR_FATAL. ERR_NONE indicates that everything + * was alright and that no message was returned. ERR_RETRYABLE means that an + * error occurred but that it may vanish after a retry (eg: port in use), and + * ERR_FATAL indicates a non-fixable error. ERR_WARN and ERR_ALERT do not alter + * the meaning of the error, but just indicate that a message is present which + * should be displayed with the respective level. Last, ERR_ABORT indicates + * that it's pointless to try to start other listeners. No error message is + * returned if errlen is NULL. + */ +static int quic_bind_listener(struct listener *listener, char *errmsg, int errlen) +{ + const struct sockaddr_storage addr = listener->rx.addr; + int fd, err = ERR_NONE; + char *msg = NULL; + + /* ensure we never return garbage */ + if (errlen) + *errmsg = 0; + + if (listener->state != LI_ASSIGNED) + return ERR_NONE; /* already bound */ + + if (!(listener->rx.flags & RX_F_BOUND)) { + msg = "receiving socket not bound"; + goto udp_return; + } + + /* Duplicate quic_mode setting from bind_conf. Useful to overwrite it + * at runtime per receiver instance. + */ + listener->rx.quic_mode = listener->bind_conf->quic_mode; + + /* Set IP_PKTINFO to retrieve destination address on recv. */ + fd = listener->rx.fd; + switch (addr.ss_family) { + case AF_INET: +#if defined(IP_PKTINFO) + setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &one, sizeof(one)); +#elif defined(IP_RECVDSTADDR) + setsockopt(fd, IPPROTO_IP, IP_RECVDSTADDR, &one, sizeof(one)); +#endif /* IP_PKTINFO || IP_RECVDSTADDR */ + break; + case AF_INET6: +#ifdef IPV6_RECVPKTINFO + setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &one, sizeof(one)); +#endif + break; + default: + break; + } + + if (!quic_alloc_rxbufs_listener(listener)) { + msg = "could not initialize tx/rx rings"; + err |= ERR_WARN; + goto udp_return; + } + + if (global.tune.options & GTUNE_QUIC_SOCK_PER_CONN) { + if (!quic_test_sock_per_conn_support(listener)) + global.tune.options &= ~GTUNE_QUIC_SOCK_PER_CONN; + } + + if (global.tune.frontend_rcvbuf) + setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &global.tune.frontend_rcvbuf, sizeof(global.tune.frontend_rcvbuf)); + + if (global.tune.frontend_sndbuf) + setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &global.tune.frontend_sndbuf, sizeof(global.tune.frontend_sndbuf)); + + listener_set_state(listener, LI_LISTEN); + + udp_return: + if (msg && errlen) { + char pn[INET6_ADDRSTRLEN]; + + addr_to_str(&listener->rx.addr, pn, sizeof(pn)); + snprintf(errmsg, errlen, "%s for [%s:%d]", msg, pn, get_host_port(&listener->rx.addr)); + } + return err; +} + +/* Enable receipt of incoming connections for listener <l>. The receiver must + * still be valid. Does nothing in early boot (needs fd_updt). + */ +static void quic_enable_listener(struct listener *l) +{ + /* FIXME: The following statements are incorrect. This + * is the responsibility of the QUIC xprt to stop accepting new + * connections. + */ + if (fd_updt) + fd_want_recv(l->rx.fd); +} + +/* Disable receipt of incoming connections for listener <l>. The receiver must + * still be valid. Does nothing in early boot (needs fd_updt). + */ +static void quic_disable_listener(struct listener *l) +{ + /* FIXME: The following statements are incorrect. This + * is the responsibility of the QUIC xprt to start accepting new + * connections again. + */ + if (fd_updt) + fd_stop_recv(l->rx.fd); +} + +/* change the connection's thread to <new_tid>. For frontend connections, the + * target is a listener, and the caller is responsible for guaranteeing that + * the listener assigned to the connection is bound to the requested thread. + */ +static int quic_set_affinity(struct connection *conn, int new_tid) +{ + struct quic_conn *qc = conn->handle.qc; + return qc_set_tid_affinity(qc, new_tid, objt_listener(conn->target)); +} + +static int quic_alloc_dghdlrs(void) +{ + int i; + + quic_dghdlrs = calloc(global.nbthread, sizeof(*quic_dghdlrs)); + if (!quic_dghdlrs) { + ha_alert("Failed to allocate the quic datagram handlers.\n"); + return 0; + } + + for (i = 0; i < global.nbthread; i++) { + struct quic_dghdlr *dghdlr = &quic_dghdlrs[i]; + + dghdlr->task = tasklet_new(); + if (!dghdlr->task) { + ha_alert("Failed to allocate the quic datagram handler on thread %d.\n", i); + return 0; + } + + tasklet_set_tid(dghdlr->task, i); + dghdlr->task->context = dghdlr; + dghdlr->task->process = quic_lstnr_dghdlr; + + MT_LIST_INIT(&dghdlr->dgrams); + } + + quic_cid_trees = calloc(QUIC_CID_TREES_CNT, sizeof(*quic_cid_trees)); + if (!quic_cid_trees) { + ha_alert("Failed to allocate global CIDs trees.\n"); + return 0; + } + + for (i = 0; i < QUIC_CID_TREES_CNT; ++i) { + HA_RWLOCK_INIT(&quic_cid_trees[i].lock); + quic_cid_trees[i].root = EB_ROOT_UNIQUE; + } + + return 1; +} +REGISTER_POST_CHECK(quic_alloc_dghdlrs); + +static int quic_deallocate_dghdlrs(void) +{ + int i; + + if (quic_dghdlrs) { + for (i = 0; i < global.nbthread; ++i) + tasklet_free(quic_dghdlrs[i].task); + free(quic_dghdlrs); + } + + ha_free(&quic_cid_trees); + + return 1; +} +REGISTER_POST_DEINIT(quic_deallocate_dghdlrs); + +/* + * Local variables: + * c-indent-level: 8 + * c-basic-offset: 8 + * End: + */ |