From 739c905baa018c99003564ebc367d93aa44d4861 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Mon, 11 Jun 2012 14:57:13 -0500 Subject: [PATCH] libceph: encapsulate out message data setup Move the code that prepares to write the data portion of a message into its own function. Signed-off-by: Alex Elder Reviewed-by: Sage Weil --- net/ceph/messenger.c | 37 +++++++++++++++++++++++-------------- 1 file changed, 23 insertions(+), 14 deletions(-) diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index ab690e2e1206..56448660883d 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -565,6 +565,24 @@ static void con_out_kvec_add(struct ceph_connection *con, con->out_kvec_bytes += size; } +static void prepare_write_message_data(struct ceph_connection *con) +{ + struct ceph_msg *msg = con->out_msg; + + BUG_ON(!msg); + BUG_ON(!msg->hdr.data_len); + + /* initialize page iterator */ + con->out_msg_pos.page = 0; + if (msg->pages) + con->out_msg_pos.page_pos = msg->page_alignment; + else + con->out_msg_pos.page_pos = 0; + con->out_msg_pos.data_pos = 0; + con->out_msg_pos.did_page_crc = false; + con->out_more = 1; /* data + footer will follow */ +} + /* * Prepare footer for currently outgoing message, and finish things * off. Assumes out_kvec* are already valid.. we just add on to the end. @@ -657,26 +675,17 @@ static void prepare_write_message(struct ceph_connection *con) con->out_msg->footer.middle_crc = cpu_to_le32(crc); } else con->out_msg->footer.middle_crc = 0; - con->out_msg->footer.data_crc = 0; - dout("prepare_write_message front_crc %u data_crc %u\n", + dout("%s front_crc %u middle_crc %u\n", __func__, le32_to_cpu(con->out_msg->footer.front_crc), le32_to_cpu(con->out_msg->footer.middle_crc)); /* is there a data payload? */ - if (le32_to_cpu(m->hdr.data_len) > 0) { - /* initialize page iterator */ - con->out_msg_pos.page = 0; - if (m->pages) - con->out_msg_pos.page_pos = m->page_alignment; - else - con->out_msg_pos.page_pos = 0; - con->out_msg_pos.data_pos = 0; - con->out_msg_pos.did_page_crc = false; - con->out_more = 1; /* data + footer will follow */ - } else { + con->out_msg->footer.data_crc = 0; + if (m->hdr.data_len) + prepare_write_message_data(con); + else /* no, queue up footer too and be done */ prepare_write_message_footer(con); - } set_bit(WRITE_PENDING, &con->flags); } -- 2.30.2