net/sfc: make sure that stats name is nul-terminated

Fixes: 73280c1e4ff2 ("net/sfc: support xstats retrieval by ID")
Fixes: 7b9891769f4b ("net/sfc: support extended statistics")
Cc: stable@dpdk.org
Signed-off-by: Andy Green <andy@warmcat.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 578af54..1b6499f 100644 (file)
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -13,6 +13,7 @@
 #include <rte_pci.h>
 #include <rte_bus_pci.h>
 #include <rte_errno.h>
+#include <rte_string_fns.h>
 
 #include "efx.h"
 
@@ -648,7 +649,7 @@ sfc_xstats_get_names(struct rte_eth_dev *dev,
        for (i = 0; i < EFX_MAC_NSTATS; ++i) {
                if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
                        if (xstats_names != NULL && nstats < xstats_count)
-                               strncpy(xstats_names[nstats].name,
+                               strlcpy(xstats_names[nstats].name,
                                        efx_mac_stat_name(sa->nic, i),
                                        sizeof(xstats_names[0].name));
                        nstats++;
@@ -726,9 +727,8 @@ sfc_xstats_get_names_by_id(struct rte_eth_dev *dev,
                if ((ids == NULL) || (ids[nb_written] == nb_supported)) {
                        char *name = xstats_names[nb_written++].name;
 
-                       strncpy(name, efx_mac_stat_name(sa->nic, i),
+                       strlcpy(name, efx_mac_stat_name(sa->nic, i),
                                sizeof(xstats_names[0].name));
-                       name[sizeof(xstats_names[0].name) - 1] = '\0';
                }
 
                ++nb_supported;