app/testpmd: fix crash of txonly with multiple segments

Running txonly mode can crash with "--txpkts=20,470". copy_len should be
properly adjusted.

Fixes: af75078fece3 ("first public release")
Cc: stable@dpdk.org
Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

diff --git a/app/test-pmd/txonly.c b/app/test-pmd/txonly.c
index 9bd3ce7..da758f8 100644 (file)
--- a/app/test-pmd/txonly.c
+++ b/app/test-pmd/txonly.c
@@ -75,6 +75,7 @@ copy_buf_to_pkt_segs(void* buf, unsigned len, struct rte_mbuf *pkt,
                buf = ((char*) buf + copy_len);
                seg = seg->next;
                seg_buf = rte_pktmbuf_mtod(seg, char *);
+               copy_len = seg->data_len;
        }
        rte_memcpy(seg_buf, buf, (size_t) len);
 }