[PATCH 3/9] net/qede: limit ring size to 32k
From: Rasesh Mody <hidden>
Date: 2017-06-29 09:52:00
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Harish Patil <redacted> Since nb_max is a u16 it can store value upto 65535 only (not 64K), but this value is not a power-of-2. So limit the ring sizes to 32K. Signed-off-by: Harish Patil <redacted> --- drivers/net/qede/qede_ethdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index 3e9f359..fcc9bbb 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c@@ -1189,13 +1189,13 @@ static int qede_dev_configure(struct rte_eth_dev *eth_dev) /* Info about HW descriptor ring limitations */ static const struct rte_eth_desc_lim qede_rx_desc_lim = { - .nb_max = NUM_RX_BDS_MAX, + .nb_max = 0x8000, /* 32K */ .nb_min = 128, .nb_align = 128 /* lowest common multiple */ }; static const struct rte_eth_desc_lim qede_tx_desc_lim = { - .nb_max = NUM_TX_BDS_MAX, + .nb_max = 0x8000, /* 32K */ .nb_min = 256, .nb_align = 256, .nb_seg_max = ETH_TX_MAX_BDS_PER_LSO_PACKET,
--
1.7.10.3