[dpdk-dev] [PATCH 2/4] port: fix ring writer buffer overflow
Robert Sanford
rsanford2 at gmail.com
Mon Mar 28 22:51:35 CEST 2016
Ring writer tx_bulk functions may write past the end of tx_buf[].
Solution is to double the size of tx_buf[].
Signed-off-by: Robert Sanford <rsanford at akamai.com>
---
lib/librte_port/rte_port_ring.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/librte_port/rte_port_ring.c b/lib/librte_port/rte_port_ring.c
index b847fea..765ecc5 100644
--- a/lib/librte_port/rte_port_ring.c
+++ b/lib/librte_port/rte_port_ring.c
@@ -179,7 +179,7 @@ rte_port_ring_reader_stats_read(void *port,
struct rte_port_ring_writer {
struct rte_port_out_stats stats;
- struct rte_mbuf *tx_buf[RTE_PORT_IN_BURST_SIZE_MAX];
+ struct rte_mbuf *tx_buf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
struct rte_ring *ring;
uint32_t tx_burst_sz;
uint32_t tx_buf_count;
@@ -447,7 +447,7 @@ rte_port_ring_writer_stats_read(void *port,
struct rte_port_ring_writer_nodrop {
struct rte_port_out_stats stats;
- struct rte_mbuf *tx_buf[RTE_PORT_IN_BURST_SIZE_MAX];
+ struct rte_mbuf *tx_buf[2 * RTE_PORT_IN_BURST_SIZE_MAX];
struct rte_ring *ring;
uint32_t tx_burst_sz;
uint32_t tx_buf_count;
--
1.7.1
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