diff options
| -rw-r--r-- | net/sunrpc/xprtsock.c | 49 |
1 files changed, 47 insertions, 2 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 0b2739d6e1a0..7e2f962d1f66 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -47,6 +47,8 @@ #include <net/checksum.h> #include <net/udp.h> #include <net/tcp.h> +#include <net/tls.h> + #include <linux/bvec.h> #include <linux/highmem.h> #include <linux/uio.h> @@ -347,13 +349,56 @@ xs_alloc_sparse_pages(struct xdr_buf *buf, size_t want, gfp_t gfp) return want; } +static int +xs_sock_process_cmsg(struct socket *sock, struct msghdr *msg, + struct cmsghdr *cmsg, int ret) +{ + if (cmsg->cmsg_level == SOL_TLS && + cmsg->cmsg_type == TLS_GET_RECORD_TYPE) { + u8 content_type = *((u8 *)CMSG_DATA(cmsg)); + + switch (content_type) { + case TLS_RECORD_TYPE_DATA: + /* TLS sets EOR at the end of each application data + * record, even though there might be more frames + * waiting to be decrypted. + */ + msg->msg_flags &= ~MSG_EOR; + break; + case TLS_RECORD_TYPE_ALERT: + ret = -ENOTCONN; + break; + default: + ret = -EAGAIN; + } + } + return ret; +} + +static int +xs_sock_recv_cmsg(struct socket *sock, struct msghdr *msg, int flags) +{ + union { + struct cmsghdr cmsg; + u8 buf[CMSG_SPACE(sizeof(u8))]; + } u; + int ret; + + msg->msg_control = &u; + msg->msg_controllen = sizeof(u); + ret = sock_recvmsg(sock, msg, flags); + if (msg->msg_controllen != sizeof(u)) + ret = xs_sock_process_cmsg(sock, msg, &u.cmsg, ret); + return ret; +} + static ssize_t xs_sock_recvmsg(struct socket *sock, struct msghdr *msg, int flags, size_t seek) { ssize_t ret; if (seek != 0) iov_iter_advance(&msg->msg_iter, seek); - ret = sock_recvmsg(sock, msg, flags); + ret = xs_sock_recv_cmsg(sock, msg, flags); return ret > 0 ? ret + seek : ret; } @@ -379,7 +424,7 @@ xs_read_discard(struct socket *sock, struct msghdr *msg, int flags, size_t count) { iov_iter_discard(&msg->msg_iter, ITER_DEST, count); - return sock_recvmsg(sock, msg, flags); + return xs_sock_recv_cmsg(sock, msg, flags); } #if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE |