net/smc: Scan from current RMB list when no position specified

When finding the first RMB of link group, it should start from the
current RMB list whose index is 0. So fix it.

Fixes: b4ba4652b3f8 ("net/smc: extend LLC layer for SMC-Rv2")
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c
index a0840b8c935b872d772c2d3809ad20364865aa09..8423e8e0063f48f6c48c33978aad5a5e6c0dc6dc 100644 (file)
--- a/net/smc/smc_llc.c
+++ b/net/smc/smc_llc.c
@@ -578,7 +578,10 @@ static struct smc_buf_desc *smc_llc_get_next_rmb(struct smc_link_group *lgr,
 {
        struct smc_buf_desc *buf_next;
 
-       if (!buf_pos || list_is_last(&buf_pos->list, &lgr->rmbs[*buf_lst])) {
+       if (!buf_pos)
+               return _smc_llc_get_next_rmb(lgr, buf_lst);
+
+       if (list_is_last(&buf_pos->list, &lgr->rmbs[*buf_lst])) {
                (*buf_lst)++;
                return _smc_llc_get_next_rmb(lgr, buf_lst);
        }