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authorAlex Elder <elder@inktank.com>2012-05-10 10:29:50 -0500
committerAlex Elder <elder@dreamhost.com>2012-05-14 12:16:42 -0500
commitfd51653f78cf40a0516e521b6de22f329c5bad8d (patch)
tree9645467cbb3a23bca4f3c7434f6ee93f212fa2ed /net/ceph
parente6cee71fac27c946a0bbad754dd076e66c4e9dbd (diff)
ceph: messenger: change read_partial() to take "end" arg
Make the second argument to read_partial() be the ending input byte position rather than the beginning offset it now represents. This amounts to moving the addition "to + size" into the caller. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'net/ceph')
-rw-r--r--net/ceph/messenger.c60
1 files changed, 38 insertions, 22 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index 37fd2aece232..a659b4de64aa 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -992,10 +992,8 @@ static int prepare_read_message(struct ceph_connection *con)
static int read_partial(struct ceph_connection *con,
- int to, int size, void *object)
+ int end, int size, void *object)
{
- int end = to + size;
-
while (con->in_base_pos < end) {
int left = end - con->in_base_pos;
int have = size - left;
@@ -1013,40 +1011,52 @@ static int read_partial(struct ceph_connection *con,
*/
static int read_partial_banner(struct ceph_connection *con)
{
- int ret, to = 0;
+ int size;
+ int end;
+ int ret;
dout("read_partial_banner %p at %d\n", con, con->in_base_pos);
/* peer's banner */
- ret = read_partial(con, to, strlen(CEPH_BANNER), con->in_banner);
+ size = strlen(CEPH_BANNER);
+ end = size;
+ ret = read_partial(con, end, size, con->in_banner);
if (ret <= 0)
goto out;
- to += strlen(CEPH_BANNER);
- ret = read_partial(con, to, sizeof(con->actual_peer_addr),
- &con->actual_peer_addr);
+
+ size = sizeof (con->actual_peer_addr);
+ end += size;
+ ret = read_partial(con, end, size, &con->actual_peer_addr);
if (ret <= 0)
goto out;
- to += sizeof(con->actual_peer_addr);
- ret = read_partial(con, to, sizeof(con->peer_addr_for_me),
- &con->peer_addr_for_me);
+
+ size = sizeof (con->peer_addr_for_me);
+ end += size;
+ ret = read_partial(con, end, size, &con->peer_addr_for_me);
if (ret <= 0)
goto out;
+
out:
return ret;
}
static int read_partial_connect(struct ceph_connection *con)
{
- int ret, to = 0;
+ int size;
+ int end;
+ int ret;
dout("read_partial_connect %p at %d\n", con, con->in_base_pos);
- ret = read_partial(con, to, sizeof(con->in_reply), &con->in_reply);
+ size = sizeof (con->in_reply);
+ end = size;
+ ret = read_partial(con, end, size, &con->in_reply);
if (ret <= 0)
goto out;
- to += sizeof(con->in_reply);
- ret = read_partial(con, to, le32_to_cpu(con->in_reply.authorizer_len),
- con->auth_reply_buf);
+
+ size = le32_to_cpu(con->in_reply.authorizer_len);
+ end += size;
+ ret = read_partial(con, end, size, con->auth_reply_buf);
if (ret <= 0)
goto out;
@@ -1495,8 +1505,10 @@ static int process_connect(struct ceph_connection *con)
*/
static int read_partial_ack(struct ceph_connection *con)
{
- return read_partial(con, 0, sizeof(con->in_temp_ack),
- &con->in_temp_ack);
+ int size = sizeof (con->in_temp_ack);
+ int end = size;
+
+ return read_partial(con, end, size, &con->in_temp_ack);
}
@@ -1629,8 +1641,9 @@ static int read_partial_message_bio(struct ceph_connection *con,
static int read_partial_message(struct ceph_connection *con)
{
struct ceph_msg *m = con->in_msg;
+ int size;
+ int end;
int ret;
- int to;
unsigned front_len, middle_len, data_len;
bool do_datacrc = !con->msgr->nocrc;
int skip;
@@ -1640,7 +1653,9 @@ static int read_partial_message(struct ceph_connection *con)
dout("read_partial_message con %p msg %p\n", con, m);
/* header */
- ret = read_partial(con, 0, sizeof (con->in_hdr), &con->in_hdr);
+ size = sizeof (con->in_hdr);
+ end = size;
+ ret = read_partial(con, end, size, &con->in_hdr);
if (ret <= 0)
return ret;
@@ -1755,8 +1770,9 @@ static int read_partial_message(struct ceph_connection *con)
}
/* footer */
- to = sizeof (m->hdr);
- ret = read_partial(con, to, sizeof (m->footer), &m->footer);
+ size = sizeof (m->footer);
+ end += size;
+ ret = read_partial(con, end, size, &m->footer);
if (ret <= 0)
return ret;