[dpdk-dev] [PATCH 2/4] port: fix ring writer buffer overflow

[Robert Sanford]

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