examples/ipsec-secgw: fix crash on unsupported algo

If algo is NULL set the status to error and return. This change
prevent crashing of ipsec-secgw application when a specific
cipher/auth/aead algo are not supported by application.

Fixes: 0d547ed03717 ("examples/ipsec-secgw: support configuration file")
Cc: stable@dpdk.org
Signed-off-by: Savinay Dharmappa <savinay.dharmappa@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

diff --git a/examples/ipsec-secgw/sa.c b/examples/ipsec-secgw/sa.c
index 7f046e3..c75a5a1 100644 (file)
--- a/examples/ipsec-secgw/sa.c
+++ b/examples/ipsec-secgw/sa.c
@@ -314,6 +314,9 @@ parse_sa_tokens(char **tokens, uint32_t n_tokens,
                        APP_CHECK(algo != NULL, status, "unrecognized "
                                "input \"%s\"", tokens[ti]);
 
+                       if (status->status < 0)
+                               return;
+
                        rule->cipher_algo = algo->algo;
                        rule->block_size = algo->block_size;
                        rule->iv_len = algo->iv_len;
@@ -378,6 +381,9 @@ parse_sa_tokens(char **tokens, uint32_t n_tokens,
                        APP_CHECK(algo != NULL, status, "unrecognized "
                                "input \"%s\"", tokens[ti]);
 
+                       if (status->status < 0)
+                               return;
+
                        rule->auth_algo = algo->algo;
                        rule->auth_key_len = algo->key_len;
                        rule->digest_len = algo->digest_len;
@@ -433,6 +439,9 @@ parse_sa_tokens(char **tokens, uint32_t n_tokens,
                        APP_CHECK(algo != NULL, status, "unrecognized "
                                "input \"%s\"", tokens[ti]);
 
+                       if (status->status < 0)
+                               return;
+
                        rule->aead_algo = algo->algo;
                        rule->cipher_key_len = algo->key_len;
                        rule->digest_len = algo->digest_len;