| /* |
| * 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; |
| |
| /* 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 void quic_add_listener(struct protocol *proto, struct listener *listener); |
| 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); |
| |
| /* 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 = quic_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, |
| |
| /* 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_sock_fd_iocb, |
| .receivers = LIST_HEAD_INIT(proto_quic4.receivers), |
| .nb_receivers = 0, |
| }; |
| |
| 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 = quic_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, |
| |
| /* 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_sock_fd_iocb, |
| .receivers = LIST_HEAD_INIT(proto_quic6.receivers), |
| .nb_receivers = 0, |
| }; |
| |
| 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 */ |
| } |
| |
| /* Add listener <listener> to protocol <proto>. Technically speaking we just |
| * initialize a few entries which should be doable during quic_bind_listener(). |
| * The end of the initialization goes on with the default function. |
| */ |
| static void quic_add_listener(struct protocol *proto, struct listener *listener) |
| { |
| listener->flags |= LI_F_QUIC_LISTENER; |
| listener->rx.flags |= RX_F_LOCAL_ACCEPT; |
| |
| default_add_listener(proto, listener); |
| } |
| |
| /* 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 < global.nbthread; 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; |
| } |
| |
| /* 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; |
| } |
| |
| /* 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; |
| } |
| |
| 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); |
| } |
| |
| 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; |
| |
| dghdlr->odcids = EB_ROOT_UNIQUE; |
| dghdlr->cids = EB_ROOT_UNIQUE; |
| |
| MT_LIST_INIT(&dghdlr->dgrams); |
| } |
| |
| 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); |
| } |
| |
| return 1; |
| } |
| REGISTER_POST_DEINIT(quic_deallocate_dghdlrs); |
| |
| /* |
| * Local variables: |
| * c-indent-level: 8 |
| * c-basic-offset: 8 |
| * End: |
| */ |