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-rw-r--r--src/spdk/lib/sock/posix/posix.c604
1 files changed, 604 insertions, 0 deletions
diff --git a/src/spdk/lib/sock/posix/posix.c b/src/spdk/lib/sock/posix/posix.c
new file mode 100644
index 00000000..565d3892
--- /dev/null
+++ b/src/spdk/lib/sock/posix/posix.c
@@ -0,0 +1,604 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) Intel Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "spdk/stdinc.h"
+
+#if defined(__linux__)
+#include <sys/epoll.h>
+#elif defined(__FreeBSD__)
+#include <sys/event.h>
+#endif
+
+#include "spdk/log.h"
+#include "spdk/sock.h"
+#include "spdk_internal/sock.h"
+
+#define MAX_TMPBUF 1024
+#define PORTNUMLEN 32
+
+struct spdk_posix_sock {
+ struct spdk_sock base;
+ int fd;
+};
+
+struct spdk_posix_sock_group_impl {
+ struct spdk_sock_group_impl base;
+ int fd;
+};
+
+static int
+get_addr_str(struct sockaddr *sa, char *host, size_t hlen)
+{
+ const char *result = NULL;
+
+ if (sa == NULL || host == NULL) {
+ return -1;
+ }
+
+ switch (sa->sa_family) {
+ case AF_INET:
+ result = inet_ntop(AF_INET, &(((struct sockaddr_in *)sa)->sin_addr),
+ host, hlen);
+ break;
+ case AF_INET6:
+ result = inet_ntop(AF_INET6, &(((struct sockaddr_in6 *)sa)->sin6_addr),
+ host, hlen);
+ break;
+ default:
+ break;
+ }
+
+ if (result != NULL) {
+ return 0;
+ } else {
+ return -1;
+ }
+}
+
+#define __posix_sock(sock) (struct spdk_posix_sock *)sock
+#define __posix_group_impl(group) (struct spdk_posix_sock_group_impl *)group
+
+static int
+spdk_posix_sock_getaddr(struct spdk_sock *_sock, char *saddr, int slen, uint16_t *sport,
+ char *caddr, int clen, uint16_t *cport)
+{
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+ struct sockaddr_storage sa;
+ socklen_t salen;
+ int rc;
+
+ assert(sock != NULL);
+
+ memset(&sa, 0, sizeof sa);
+ salen = sizeof sa;
+ rc = getsockname(sock->fd, (struct sockaddr *) &sa, &salen);
+ if (rc != 0) {
+ SPDK_ERRLOG("getsockname() failed (errno=%d)\n", errno);
+ return -1;
+ }
+
+ switch (sa.ss_family) {
+ case AF_UNIX:
+ /* Acceptable connection types that don't have IPs */
+ return 0;
+ case AF_INET:
+ case AF_INET6:
+ /* Code below will get IP addresses */
+ break;
+ default:
+ /* Unsupported socket family */
+ return -1;
+ }
+
+ rc = get_addr_str((struct sockaddr *)&sa, saddr, slen);
+ if (rc != 0) {
+ SPDK_ERRLOG("getnameinfo() failed (errno=%d)\n", errno);
+ return -1;
+ }
+
+ if (sport) {
+ if (sa.ss_family == AF_INET) {
+ *sport = ntohs(((struct sockaddr_in *) &sa)->sin_port);
+ } else if (sa.ss_family == AF_INET6) {
+ *sport = ntohs(((struct sockaddr_in6 *) &sa)->sin6_port);
+ }
+ }
+
+ memset(&sa, 0, sizeof sa);
+ salen = sizeof sa;
+ rc = getpeername(sock->fd, (struct sockaddr *) &sa, &salen);
+ if (rc != 0) {
+ SPDK_ERRLOG("getpeername() failed (errno=%d)\n", errno);
+ return -1;
+ }
+
+ rc = get_addr_str((struct sockaddr *)&sa, caddr, clen);
+ if (rc != 0) {
+ SPDK_ERRLOG("getnameinfo() failed (errno=%d)\n", errno);
+ return -1;
+ }
+
+ if (cport) {
+ if (sa.ss_family == AF_INET) {
+ *cport = ntohs(((struct sockaddr_in *) &sa)->sin_port);
+ } else if (sa.ss_family == AF_INET6) {
+ *cport = ntohs(((struct sockaddr_in6 *) &sa)->sin6_port);
+ }
+ }
+
+ return 0;
+}
+
+enum spdk_posix_sock_create_type {
+ SPDK_SOCK_CREATE_LISTEN,
+ SPDK_SOCK_CREATE_CONNECT,
+};
+
+static struct spdk_sock *
+spdk_posix_sock_create(const char *ip, int port, enum spdk_posix_sock_create_type type)
+{
+ struct spdk_posix_sock *sock;
+ char buf[MAX_TMPBUF];
+ char portnum[PORTNUMLEN];
+ char *p;
+ struct addrinfo hints, *res, *res0;
+ int fd, flag;
+ int val = 1;
+ int rc;
+
+ if (ip == NULL) {
+ return NULL;
+ }
+ if (ip[0] == '[') {
+ snprintf(buf, sizeof(buf), "%s", ip + 1);
+ p = strchr(buf, ']');
+ if (p != NULL) {
+ *p = '\0';
+ }
+ ip = (const char *) &buf[0];
+ }
+
+ snprintf(portnum, sizeof portnum, "%d", port);
+ memset(&hints, 0, sizeof hints);
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_flags = AI_NUMERICSERV;
+ hints.ai_flags |= AI_PASSIVE;
+ hints.ai_flags |= AI_NUMERICHOST;
+ rc = getaddrinfo(ip, portnum, &hints, &res0);
+ if (rc != 0) {
+ SPDK_ERRLOG("getaddrinfo() failed (errno=%d)\n", errno);
+ return NULL;
+ }
+
+ /* try listen */
+ fd = -1;
+ for (res = res0; res != NULL; res = res->ai_next) {
+retry:
+ fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+ if (fd < 0) {
+ /* error */
+ continue;
+ }
+ rc = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof val);
+ if (rc != 0) {
+ close(fd);
+ /* error */
+ continue;
+ }
+ rc = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof val);
+ if (rc != 0) {
+ close(fd);
+ /* error */
+ continue;
+ }
+
+ if (res->ai_family == AF_INET6) {
+ rc = setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &val, sizeof val);
+ if (rc != 0) {
+ close(fd);
+ /* error */
+ continue;
+ }
+ }
+
+ if (type == SPDK_SOCK_CREATE_LISTEN) {
+ rc = bind(fd, res->ai_addr, res->ai_addrlen);
+ if (rc != 0) {
+ SPDK_ERRLOG("bind() failed, errno = %d\n", errno);
+ switch (errno) {
+ case EINTR:
+ /* interrupted? */
+ close(fd);
+ goto retry;
+ case EADDRNOTAVAIL:
+ SPDK_ERRLOG("IP address %s not available. "
+ "Verify IP address in config file "
+ "and make sure setup script is "
+ "run before starting spdk app.\n", ip);
+ /* FALLTHROUGH */
+ default:
+ /* try next family */
+ close(fd);
+ fd = -1;
+ continue;
+ }
+ }
+ /* bind OK */
+ rc = listen(fd, 512);
+ if (rc != 0) {
+ SPDK_ERRLOG("listen() failed, errno = %d\n", errno);
+ close(fd);
+ fd = -1;
+ break;
+ }
+ } else if (type == SPDK_SOCK_CREATE_CONNECT) {
+ rc = connect(fd, res->ai_addr, res->ai_addrlen);
+ if (rc != 0) {
+ SPDK_ERRLOG("connect() failed, errno = %d\n", errno);
+ /* try next family */
+ close(fd);
+ fd = -1;
+ continue;
+ }
+ }
+
+ flag = fcntl(fd, F_GETFL);
+ if (fcntl(fd, F_SETFL, flag | O_NONBLOCK) < 0) {
+ SPDK_ERRLOG("fcntl can't set nonblocking mode for socket, fd: %d (%d)\n", fd, errno);
+ close(fd);
+ fd = -1;
+ break;
+ }
+ break;
+ }
+ freeaddrinfo(res0);
+
+ if (fd < 0) {
+ return NULL;
+ }
+
+ sock = calloc(1, sizeof(*sock));
+ if (sock == NULL) {
+ SPDK_ERRLOG("sock allocation failed\n");
+ close(fd);
+ return NULL;
+ }
+
+ sock->fd = fd;
+ return &sock->base;
+}
+
+static struct spdk_sock *
+spdk_posix_sock_listen(const char *ip, int port)
+{
+ return spdk_posix_sock_create(ip, port, SPDK_SOCK_CREATE_LISTEN);
+}
+
+static struct spdk_sock *
+spdk_posix_sock_connect(const char *ip, int port)
+{
+ return spdk_posix_sock_create(ip, port, SPDK_SOCK_CREATE_CONNECT);
+}
+
+static struct spdk_sock *
+spdk_posix_sock_accept(struct spdk_sock *_sock)
+{
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+ struct sockaddr_storage sa;
+ socklen_t salen;
+ int rc;
+ struct spdk_posix_sock *new_sock;
+ int flag;
+
+ memset(&sa, 0, sizeof(sa));
+ salen = sizeof(sa);
+
+ assert(sock != NULL);
+
+ rc = accept(sock->fd, (struct sockaddr *)&sa, &salen);
+
+ if (rc == -1) {
+ return NULL;
+ }
+
+ flag = fcntl(rc, F_GETFL);
+ if ((!(flag & O_NONBLOCK)) && (fcntl(rc, F_SETFL, flag | O_NONBLOCK) < 0)) {
+ SPDK_ERRLOG("fcntl can't set nonblocking mode for socket, fd: %d (%d)\n", rc, errno);
+ close(rc);
+ return NULL;
+ }
+
+ new_sock = calloc(1, sizeof(*sock));
+ if (new_sock == NULL) {
+ SPDK_ERRLOG("sock allocation failed\n");
+ close(rc);
+ return NULL;
+ }
+
+ new_sock->fd = rc;
+ return &new_sock->base;
+}
+
+static int
+spdk_posix_sock_close(struct spdk_sock *_sock)
+{
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+ int rc;
+
+ rc = close(sock->fd);
+ if (rc == 0) {
+ free(sock);
+ }
+
+ return rc;
+}
+
+static ssize_t
+spdk_posix_sock_recv(struct spdk_sock *_sock, void *buf, size_t len)
+{
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+
+ return recv(sock->fd, buf, len, MSG_DONTWAIT);
+}
+
+static ssize_t
+spdk_posix_sock_writev(struct spdk_sock *_sock, struct iovec *iov, int iovcnt)
+{
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+
+ return writev(sock->fd, iov, iovcnt);
+}
+
+static int
+spdk_posix_sock_set_recvlowat(struct spdk_sock *_sock, int nbytes)
+{
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+ int val;
+ int rc;
+
+ assert(sock != NULL);
+
+ val = nbytes;
+ rc = setsockopt(sock->fd, SOL_SOCKET, SO_RCVLOWAT, &val, sizeof val);
+ if (rc != 0) {
+ return -1;
+ }
+ return 0;
+}
+
+static int
+spdk_posix_sock_set_recvbuf(struct spdk_sock *_sock, int sz)
+{
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+
+ assert(sock != NULL);
+
+ return setsockopt(sock->fd, SOL_SOCKET, SO_RCVBUF,
+ &sz, sizeof(sz));
+}
+
+static int
+spdk_posix_sock_set_sendbuf(struct spdk_sock *_sock, int sz)
+{
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+
+ assert(sock != NULL);
+
+ return setsockopt(sock->fd, SOL_SOCKET, SO_SNDBUF,
+ &sz, sizeof(sz));
+}
+
+static bool
+spdk_posix_sock_is_ipv6(struct spdk_sock *_sock)
+{
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+ struct sockaddr_storage sa;
+ socklen_t salen;
+ int rc;
+
+ assert(sock != NULL);
+
+ memset(&sa, 0, sizeof sa);
+ salen = sizeof sa;
+ rc = getsockname(sock->fd, (struct sockaddr *) &sa, &salen);
+ if (rc != 0) {
+ SPDK_ERRLOG("getsockname() failed (errno=%d)\n", errno);
+ return false;
+ }
+
+ return (sa.ss_family == AF_INET6);
+}
+
+static bool
+spdk_posix_sock_is_ipv4(struct spdk_sock *_sock)
+{
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+ struct sockaddr_storage sa;
+ socklen_t salen;
+ int rc;
+
+ assert(sock != NULL);
+
+ memset(&sa, 0, sizeof sa);
+ salen = sizeof sa;
+ rc = getsockname(sock->fd, (struct sockaddr *) &sa, &salen);
+ if (rc != 0) {
+ SPDK_ERRLOG("getsockname() failed (errno=%d)\n", errno);
+ return false;
+ }
+
+ return (sa.ss_family == AF_INET);
+}
+
+static struct spdk_sock_group_impl *
+spdk_posix_sock_group_impl_create(void)
+{
+ struct spdk_posix_sock_group_impl *group_impl;
+ int fd;
+
+#if defined(__linux__)
+ fd = epoll_create1(0);
+#elif defined(__FreeBSD__)
+ fd = kqueue();
+#endif
+ if (fd == -1) {
+ return NULL;
+ }
+
+ group_impl = calloc(1, sizeof(*group_impl));
+ if (group_impl == NULL) {
+ SPDK_ERRLOG("group_impl allocation failed\n");
+ close(fd);
+ return NULL;
+ }
+
+ group_impl->fd = fd;
+
+ return &group_impl->base;
+}
+
+static int
+spdk_posix_sock_group_impl_add_sock(struct spdk_sock_group_impl *_group, struct spdk_sock *_sock)
+{
+ struct spdk_posix_sock_group_impl *group = __posix_group_impl(_group);
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+ int rc;
+
+#if defined(__linux__)
+ struct epoll_event event;
+
+ event.events = EPOLLIN;
+ event.data.ptr = sock;
+
+ rc = epoll_ctl(group->fd, EPOLL_CTL_ADD, sock->fd, &event);
+#elif defined(__FreeBSD__)
+ struct kevent event;
+ struct timespec ts = {0};
+
+ EV_SET(&event, sock->fd, EVFILT_READ, EV_ADD, 0, 0, sock);
+
+ rc = kevent(group->fd, &event, 1, NULL, 0, &ts);
+#endif
+ return rc;
+}
+
+static int
+spdk_posix_sock_group_impl_remove_sock(struct spdk_sock_group_impl *_group, struct spdk_sock *_sock)
+{
+ struct spdk_posix_sock_group_impl *group = __posix_group_impl(_group);
+ struct spdk_posix_sock *sock = __posix_sock(_sock);
+ int rc;
+#if defined(__linux__)
+ struct epoll_event event;
+
+ /* Event parameter is ignored but some old kernel version still require it. */
+ rc = epoll_ctl(group->fd, EPOLL_CTL_DEL, sock->fd, &event);
+#elif defined(__FreeBSD__)
+ struct kevent event;
+ struct timespec ts = {0};
+
+ EV_SET(&event, sock->fd, EVFILT_READ, EV_DELETE, 0, 0, NULL);
+
+ rc = kevent(group->fd, &event, 1, NULL, 0, &ts);
+ if (rc == 0 && event.flags & EV_ERROR) {
+ rc = -1;
+ errno = event.data;
+ }
+#endif
+ return rc;
+}
+
+static int
+spdk_posix_sock_group_impl_poll(struct spdk_sock_group_impl *_group, int max_events,
+ struct spdk_sock **socks)
+{
+ struct spdk_posix_sock_group_impl *group = __posix_group_impl(_group);
+ int num_events, i;
+
+#if defined(__linux__)
+ struct epoll_event events[MAX_EVENTS_PER_POLL];
+
+ num_events = epoll_wait(group->fd, events, max_events, 0);
+#elif defined(__FreeBSD__)
+ struct kevent events[MAX_EVENTS_PER_POLL];
+ struct timespec ts = {0};
+
+ num_events = kevent(group->fd, NULL, 0, events, max_events, &ts);
+#endif
+
+ if (num_events == -1) {
+ return -1;
+ }
+
+ for (i = 0; i < num_events; i++) {
+#if defined(__linux__)
+ socks[i] = events[i].data.ptr;
+#elif defined(__FreeBSD__)
+ socks[i] = events[i].udata;
+#endif
+ }
+
+ return num_events;
+}
+
+static int
+spdk_posix_sock_group_impl_close(struct spdk_sock_group_impl *_group)
+{
+ struct spdk_posix_sock_group_impl *group = __posix_group_impl(_group);
+
+ return close(group->fd);
+}
+
+static struct spdk_net_impl g_posix_net_impl = {
+ .name = "posix",
+ .getaddr = spdk_posix_sock_getaddr,
+ .connect = spdk_posix_sock_connect,
+ .listen = spdk_posix_sock_listen,
+ .accept = spdk_posix_sock_accept,
+ .close = spdk_posix_sock_close,
+ .recv = spdk_posix_sock_recv,
+ .writev = spdk_posix_sock_writev,
+ .set_recvlowat = spdk_posix_sock_set_recvlowat,
+ .set_recvbuf = spdk_posix_sock_set_recvbuf,
+ .set_sendbuf = spdk_posix_sock_set_sendbuf,
+ .is_ipv6 = spdk_posix_sock_is_ipv6,
+ .is_ipv4 = spdk_posix_sock_is_ipv4,
+ .group_impl_create = spdk_posix_sock_group_impl_create,
+ .group_impl_add_sock = spdk_posix_sock_group_impl_add_sock,
+ .group_impl_remove_sock = spdk_posix_sock_group_impl_remove_sock,
+ .group_impl_poll = spdk_posix_sock_group_impl_poll,
+ .group_impl_close = spdk_posix_sock_group_impl_close,
+};
+
+SPDK_NET_IMPL_REGISTER(posix, &g_posix_net_impl);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 00:11:15 +0000