[PATCH v3 7/7] net/mlx4: remove empty Tx segment support
From: Matan Azrad <hidden>
Date: 2017-10-30 10:08:05
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Move empty segment case processing to debug mode. Signed-off-by: Matan Azrad <redacted> --- drivers/net/mlx4/mlx4_rxtx.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/net/mlx4/mlx4_rxtx.c b/drivers/net/mlx4/mlx4_rxtx.c
index 482c399..c005a41 100644
--- a/drivers/net/mlx4/mlx4_rxtx.c
+++ b/drivers/net/mlx4/mlx4_rxtx.c@@ -305,15 +305,18 @@ static int handle_multi_segs(struct rte_mbuf *buf, return -1; } #endif /* NDEBUG */ - if (likely(sbuf->data_len)) { - byte_count = rte_cpu_to_be_32(sbuf->data_len); - } else { + byte_count = rte_cpu_to_be_32(sbuf->data_len); +#ifndef NDEBUG + if (unlikely(!sbuf->data_len)) { + DEBUG("%p: Empty segment is not allowed", + (void *)txq); /* * Zero length segment is treated as inline segment * with zero data. */ byte_count = RTE_BE32(0x80000000); } +#endif /* NDEBUG */ /* * If the data segment is not at the beginning of a * Tx basic block (TXBB) then write the byte count,
--
1.8.3.1