From b4b7ff4b08e691656c9d77c758fc355833128ac0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 20 Jan 2016 14:01:31 -0300 Subject: Linux-libre 4.4-gnu --- net/ceph/messenger.c | 88 ++++++++++++++++++++++------------------------------ 1 file changed, 37 insertions(+), 51 deletions(-) (limited to 'net/ceph/messenger.c') diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index b9b0e3b5d..9981039ef 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -509,7 +509,7 @@ static int ceph_tcp_connect(struct ceph_connection *con) return ret; } - if (con->msgr->tcp_nodelay) { + if (ceph_test_opt(from_msgr(con->msgr), TCP_NODELAY)) { int optval = 1; ret = kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY, @@ -637,9 +637,6 @@ static int con_close_socket(struct ceph_connection *con) static void ceph_msg_remove(struct ceph_msg *msg) { list_del_init(&msg->list_head); - BUG_ON(msg->con == NULL); - msg->con->ops->put(msg->con); - msg->con = NULL; ceph_msg_put(msg); } @@ -662,15 +659,14 @@ static void reset_connection(struct ceph_connection *con) if (con->in_msg) { BUG_ON(con->in_msg->con != con); - con->in_msg->con = NULL; ceph_msg_put(con->in_msg); con->in_msg = NULL; - con->ops->put(con); } con->connect_seq = 0; con->out_seq = 0; if (con->out_msg) { + BUG_ON(con->out_msg->con != con); ceph_msg_put(con->out_msg); con->out_msg = NULL; } @@ -1205,7 +1201,7 @@ static void prepare_write_message_footer(struct ceph_connection *con) con->out_kvec[v].iov_base = &m->footer; if (con->peer_features & CEPH_FEATURE_MSG_AUTH) { if (con->ops->sign_message) - con->ops->sign_message(con, m); + con->ops->sign_message(m); else m->footer.sig = 0; con->out_kvec[v].iov_len = sizeof(m->footer); @@ -1432,7 +1428,8 @@ static int prepare_write_connect(struct ceph_connection *con) dout("prepare_write_connect %p cseq=%d gseq=%d proto=%d\n", con, con->connect_seq, global_seq, proto); - con->out_connect.features = cpu_to_le64(con->msgr->supported_features); + con->out_connect.features = + cpu_to_le64(from_msgr(con->msgr)->supported_features); con->out_connect.host_type = cpu_to_le32(CEPH_ENTITY_TYPE_CLIENT); con->out_connect.connect_seq = cpu_to_le32(con->connect_seq); con->out_connect.global_seq = cpu_to_le32(global_seq); @@ -1527,7 +1524,7 @@ static int write_partial_message_data(struct ceph_connection *con) { struct ceph_msg *msg = con->out_msg; struct ceph_msg_data_cursor *cursor = &msg->cursor; - bool do_datacrc = !con->msgr->nocrc; + bool do_datacrc = !ceph_test_opt(from_msgr(con->msgr), NOCRC); u32 crc; dout("%s %p msg %p\n", __func__, con, msg); @@ -1552,8 +1549,8 @@ static int write_partial_message_data(struct ceph_connection *con) bool need_crc; int ret; - page = ceph_msg_data_next(&msg->cursor, &page_offset, &length, - &last_piece); + page = ceph_msg_data_next(cursor, &page_offset, &length, + &last_piece); ret = ceph_tcp_sendpage(con->sock, page, page_offset, length, !last_piece); if (ret <= 0) { @@ -1564,7 +1561,7 @@ static int write_partial_message_data(struct ceph_connection *con) } if (do_datacrc && cursor->need_crc) crc = ceph_crc32c_page(crc, page, page_offset, length); - need_crc = ceph_msg_data_advance(&msg->cursor, (size_t)ret); + need_crc = ceph_msg_data_advance(cursor, (size_t)ret); } dout("%s %p msg %p done\n", __func__, con, msg); @@ -2005,8 +2002,8 @@ static int process_banner(struct ceph_connection *con) static int process_connect(struct ceph_connection *con) { - u64 sup_feat = con->msgr->supported_features; - u64 req_feat = con->msgr->required_features; + u64 sup_feat = from_msgr(con->msgr)->supported_features; + u64 req_feat = from_msgr(con->msgr)->required_features; u64 server_feat = ceph_sanitize_features( le64_to_cpu(con->in_reply.features)); int ret; @@ -2232,7 +2229,7 @@ static int read_partial_msg_data(struct ceph_connection *con) { struct ceph_msg *msg = con->in_msg; struct ceph_msg_data_cursor *cursor = &msg->cursor; - const bool do_datacrc = !con->msgr->nocrc; + bool do_datacrc = !ceph_test_opt(from_msgr(con->msgr), NOCRC); struct page *page; size_t page_offset; size_t length; @@ -2246,8 +2243,7 @@ static int read_partial_msg_data(struct ceph_connection *con) if (do_datacrc) crc = con->in_data_crc; while (cursor->resid) { - page = ceph_msg_data_next(&msg->cursor, &page_offset, &length, - NULL); + page = ceph_msg_data_next(cursor, &page_offset, &length, NULL); ret = ceph_tcp_recvpage(con->sock, page, page_offset, length); if (ret <= 0) { if (do_datacrc) @@ -2258,7 +2254,7 @@ static int read_partial_msg_data(struct ceph_connection *con) if (do_datacrc) crc = ceph_crc32c_page(crc, page, page_offset, ret); - (void) ceph_msg_data_advance(&msg->cursor, (size_t)ret); + (void) ceph_msg_data_advance(cursor, (size_t)ret); } if (do_datacrc) con->in_data_crc = crc; @@ -2278,7 +2274,7 @@ static int read_partial_message(struct ceph_connection *con) int end; int ret; unsigned int front_len, middle_len, data_len; - bool do_datacrc = !con->msgr->nocrc; + bool do_datacrc = !ceph_test_opt(from_msgr(con->msgr), NOCRC); bool need_sign = (con->peer_features & CEPH_FEATURE_MSG_AUTH); u64 seq; u32 crc; @@ -2423,7 +2419,7 @@ static int read_partial_message(struct ceph_connection *con) } if (need_sign && con->ops->check_message_signature && - con->ops->check_message_signature(con, m)) { + con->ops->check_message_signature(m)) { pr_err("read_partial_message %p signature check failed\n", m); return -EBADMSG; } @@ -2438,13 +2434,10 @@ static int read_partial_message(struct ceph_connection *con) */ static void process_message(struct ceph_connection *con) { - struct ceph_msg *msg; + struct ceph_msg *msg = con->in_msg; BUG_ON(con->in_msg->con != con); - con->in_msg->con = NULL; - msg = con->in_msg; con->in_msg = NULL; - con->ops->put(con); /* if first message, set peer_name */ if (con->peer_name.type == 0) @@ -2677,7 +2670,7 @@ more: if (ret <= 0) { switch (ret) { case -EBADMSG: - con->error_msg = "bad crc"; + con->error_msg = "bad crc/signature"; /* fall through */ case -EBADE: ret = -EIO; @@ -2918,10 +2911,8 @@ static void con_fault(struct ceph_connection *con) if (con->in_msg) { BUG_ON(con->in_msg->con != con); - con->in_msg->con = NULL; ceph_msg_put(con->in_msg); con->in_msg = NULL; - con->ops->put(con); } /* Requeue anything that hasn't been acked */ @@ -2952,15 +2943,8 @@ static void con_fault(struct ceph_connection *con) * initialize a new messenger instance */ void ceph_messenger_init(struct ceph_messenger *msgr, - struct ceph_entity_addr *myaddr, - u64 supported_features, - u64 required_features, - bool nocrc, - bool tcp_nodelay) + struct ceph_entity_addr *myaddr) { - msgr->supported_features = supported_features; - msgr->required_features = required_features; - spin_lock_init(&msgr->global_seq_lock); if (myaddr) @@ -2970,8 +2954,6 @@ void ceph_messenger_init(struct ceph_messenger *msgr, msgr->inst.addr.type = 0; get_random_bytes(&msgr->inst.addr.nonce, sizeof(msgr->inst.addr.nonce)); encode_my_addr(msgr); - msgr->nocrc = nocrc; - msgr->tcp_nodelay = tcp_nodelay; atomic_set(&msgr->stopping, 0); write_pnet(&msgr->net, get_net(current->nsproxy->net_ns)); @@ -2986,6 +2968,15 @@ void ceph_messenger_fini(struct ceph_messenger *msgr) } EXPORT_SYMBOL(ceph_messenger_fini); +static void msg_con_set(struct ceph_msg *msg, struct ceph_connection *con) +{ + if (msg->con) + msg->con->ops->put(msg->con); + + msg->con = con ? con->ops->get(con) : NULL; + BUG_ON(msg->con != con); +} + static void clear_standby(struct ceph_connection *con) { /* come back from STANDBY? */ @@ -3017,9 +3008,7 @@ void ceph_con_send(struct ceph_connection *con, struct ceph_msg *msg) return; } - BUG_ON(msg->con != NULL); - msg->con = con->ops->get(con); - BUG_ON(msg->con == NULL); + msg_con_set(msg, con); BUG_ON(!list_empty(&msg->list_head)); list_add_tail(&msg->list_head, &con->out_queue); @@ -3047,16 +3036,15 @@ void ceph_msg_revoke(struct ceph_msg *msg) { struct ceph_connection *con = msg->con; - if (!con) + if (!con) { + dout("%s msg %p null con\n", __func__, msg); return; /* Message not in our possession */ + } mutex_lock(&con->mutex); if (!list_empty(&msg->list_head)) { dout("%s %p msg %p - was on queue\n", __func__, con, msg); list_del_init(&msg->list_head); - BUG_ON(msg->con == NULL); - msg->con->ops->put(msg->con); - msg->con = NULL; msg->hdr.seq = 0; ceph_msg_put(msg); @@ -3080,16 +3068,13 @@ void ceph_msg_revoke(struct ceph_msg *msg) */ void ceph_msg_revoke_incoming(struct ceph_msg *msg) { - struct ceph_connection *con; + struct ceph_connection *con = msg->con; - BUG_ON(msg == NULL); - if (!msg->con) { + if (!con) { dout("%s msg %p null con\n", __func__, msg); - return; /* Message not in our possession */ } - con = msg->con; mutex_lock(&con->mutex); if (con->in_msg == msg) { unsigned int front_len = le32_to_cpu(con->in_hdr.front_len); @@ -3335,9 +3320,8 @@ static int ceph_con_in_msg_alloc(struct ceph_connection *con, int *skip) } if (msg) { BUG_ON(*skip); + msg_con_set(msg, con); con->in_msg = msg; - con->in_msg->con = con->ops->get(con); - BUG_ON(con->in_msg->con == NULL); } else { /* * Null message pointer means either we should skip @@ -3384,6 +3368,8 @@ static void ceph_msg_release(struct kref *kref) dout("%s %p\n", __func__, m); WARN_ON(!list_empty(&m->list_head)); + msg_con_set(m, NULL); + /* drop middle, data, if any */ if (m->middle) { ceph_buffer_put(m->middle); -- cgit v1.2.3-54-g00ecf