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libceph: use sizeof_footer() more

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Don't open-code sizeof_footer() in read_partial_message() and
ceph_msg_revoke().  Also, after switching to sizeof_footer(), it's now
possible to use con_out_kvec_add() in prepare_write_message_footer().

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Ilya Dryomov 2016-02-20 15:56:07 +01:00
parent 34b759b4a2
commit 89f081730c
1 changed files with 3 additions and 16 deletions
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19
net/ceph/messenger.c
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@ -1221,25 +1221,19 @@ static void prepare_message_data(struct ceph_msg *msg, u32 data_len)
static void prepare_write_message_footer(struct ceph_connection *con)
{
struct ceph_msg *m = con->out_msg;
int v = con->out_kvec_left;
m->footer.flags |= CEPH_MSG_FOOTER_COMPLETE;
dout("prepare_write_message_footer %p\n", con);
con->out_kvec[v].iov_base = &m->footer;
con_out_kvec_add(con, sizeof_footer(con), &m->footer);
if (con->peer_features & CEPH_FEATURE_MSG_AUTH) {
if (con->ops->sign_message)
con->ops->sign_message(m);
else
m->footer.sig = 0;
con->out_kvec[v].iov_len = sizeof(m->footer);
con->out_kvec_bytes += sizeof(m->footer);
} else {
m->old_footer.flags = m->footer.flags;
con->out_kvec[v].iov_len = sizeof(m->old_footer);
con->out_kvec_bytes += sizeof(m->old_footer);
}
con->out_kvec_left++;
con->out_more = m->more_to_follow;
con->out_msg_done = true;
}
@ -2409,11 +2403,7 @@ static int read_partial_message(struct ceph_connection *con)
}
/* footer */
if (need_sign)
size = sizeof(m->footer);
else
size = sizeof(m->old_footer);
size = sizeof_footer(con);
end += size;
ret = read_partial(con, end, size, &m->footer);
if (ret <= 0)
@ -3089,10 +3079,7 @@ void ceph_msg_revoke(struct ceph_msg *msg)
con->out_skip += con_out_kvec_skip(con);
} else {
BUG_ON(!msg->data_length);
if (con->peer_features & CEPH_FEATURE_MSG_AUTH)
con->out_skip += sizeof(msg->footer);
else
con->out_skip += sizeof(msg->old_footer);
con->out_skip += sizeof_footer(con);
}
/* data, middle, front */
if (msg->data_length)