[dpdk-dev] [PATCH] ethdev: check for invalid device name
Stephen Hemminger
stephen at networkplumber.org
Mon Mar 11 19:15:44 CET 2019
Do not allow creating a ethernet device with a name over the
allowed maximum (or zero length). This is safer than silently truncating
which is what happens now.
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
Acked-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
v1 - previously sent as RFC
lib/librte_ethdev/rte_ethdev.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 85c1794968dd..0b81980ff71c 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -439,6 +439,16 @@ rte_eth_dev_allocate(const char *name)
uint16_t port_id;
struct rte_eth_dev *eth_dev = NULL;
+ if (*name) {
+ RTE_ETHDEV_LOG(ERR, "Zero length Ethernet device name\n");
+ return NULL;
+ }
+
+ if (strnlen(name, RTE_ETH_NAME_MAX_LEN) >= RTE_ETH_NAME_MAX_LEN) {
+ RTE_ETHDEV_LOG(ERR, "Ethernet device name is too long\n");
+ return NULL;
+ }
+
rte_eth_dev_shared_data_prepare();
/* Synchronize port creation between primary and secondary threads. */
--
2.17.1
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