[PATCH v2 13/44] net/enic: fix segment fault when parse devargs

[Chengwen Feng]

The rte_kvargs_process() was used to parse KV pairs, it also supports
to parse 'only keys' (e.g. socket_id) type. And the callback function
parameter 'value' is NULL when parsed 'only keys'.

This patch fixes segment fault when parse input args with 'only keys'.

Fixes: 93fb21fdbe23 ("net/enic: enable overlay offload for VXLAN and GENEVE")
Fixes: e39c2756e21a ("net/enic: add devarg to specify ingress VLAN rewrite 
mode")
Cc: sta...@dpdk.org

Signed-off-by: Chengwen Feng <fengcheng...@huawei.com>
---
 drivers/net/enic/enic_ethdev.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
index cdf0915591..b67016e0a3 100644
--- a/drivers/net/enic/enic_ethdev.c
+++ b/drivers/net/enic/enic_ethdev.c
@@ -1148,6 +1148,9 @@ static int enic_parse_zero_one(const char *key,
        struct enic *enic;
        bool b;
 
+       if (value == NULL)
+               return -EINVAL;
+
        enic = (struct enic *)opaque;
        if (strcmp(value, "0") == 0) {
                b = false;
@@ -1173,6 +1176,9 @@ static int enic_parse_ig_vlan_rewrite(__rte_unused const 
char *key,
 {
        struct enic *enic;
 
+       if (value == NULL)
+               return -EINVAL;
+
        enic = (struct enic *)opaque;
        if (strcmp(value, "trunk") == 0) {
                /* Trunk mode: always tag */
-- 
2.17.1