9p/fd: Use P9_HDRSZ for header size

[ Upstream commit 6854fadbeee10891ed74246bdc05031906b6c8cf ]

Cleanup hardcoded header sizes to use P9_HDRSZ instead of '7'

Link: https://lkml.kernel.org/r/20221117091159.31533-4-guozihua@huawei.com
Signed-off-by: GUO Zihua <guozihua@huawei.com>
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
[Dominique: commit message adjusted to make sense after offset size
adjustment got removed]
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index 23c1d78ab1e4af671c1447afad77f9910f7fb39b..872568cca9262ae6a70af5bb53a7c2997dc40ff2 100644 (file)
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -118,7 +118,7 @@ struct p9_conn {
        struct list_head unsent_req_list;
        struct p9_req_t *rreq;
        struct p9_req_t *wreq;
-       char tmp_buf[7];
+       char tmp_buf[P9_HDRSZ];
        struct p9_fcall rc;
        int wpos;
        int wsize;
@@ -291,7 +291,7 @@ static void p9_read_work(struct work_struct *work)
        if (!m->rc.sdata) {
                m->rc.sdata = m->tmp_buf;
                m->rc.offset = 0;
-               m->rc.capacity = 7; /* start by reading header */
+               m->rc.capacity = P9_HDRSZ; /* start by reading header */
        }
 
        clear_bit(Rpending, &m->wsched);
@@ -314,7 +314,7 @@ static void p9_read_work(struct work_struct *work)
                p9_debug(P9_DEBUG_TRANS, "got new header\n");
 
                /* Header size */
-               m->rc.size = 7;
+               m->rc.size = P9_HDRSZ;
                err = p9_parse_header(&m->rc, &m->rc.size, NULL, NULL, 0);
                if (err) {
                        p9_debug(P9_DEBUG_ERROR,