Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 34aedfee authored by Davide Caratti's avatar Davide Caratti Committed by David S. Miller
Browse files

macsec: fix error codes when a SA is created 



preserve the return value of AEAD functions that are called when a SA is
created, to avoid inappropriate display of "RTNETLINK answers: Cannot
allocate memory" message.

Signed-off-by: default avatarDavide Caratti <dcaratti@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2ccbe2cb

drivers/net/macsec.c

+36 −22
Original line number Diff line number Diff line
@@ -1270,22 +1270,22 @@ static struct crypto_aead *macsec_alloc_tfm(char *key, int key_len, int icv_len) 
	int ret;



	tfm = crypto_alloc_aead("gcm(aes)", 0, 0);

	if (!tfm || IS_ERR(tfm))

		return NULL;



	if (IS_ERR(tfm))

		return tfm;



	ret = crypto_aead_setkey(tfm, key, key_len);

	if (ret < 0) {

		crypto_free_aead(tfm);

		return NULL;

	}

	if (ret < 0)

		goto fail;



	ret = crypto_aead_setauthsize(tfm, icv_len);

	if (ret < 0) {

		crypto_free_aead(tfm);

		return NULL;

	}

	if (ret < 0)

		goto fail;



	return tfm;

fail:

	crypto_free_aead(tfm);

	return ERR_PTR(ret);

}



static int init_rx_sa(struct macsec_rx_sa *rx_sa, char *sak, int key_len,
@@ -1293,12 +1293,12 @@ static int init_rx_sa(struct macsec_rx_sa *rx_sa, char *sak, int key_len, 
{

	rx_sa->stats = alloc_percpu(struct macsec_rx_sa_stats);

	if (!rx_sa->stats)

		return -1;

		return -ENOMEM;



	rx_sa->key.tfm = macsec_alloc_tfm(sak, key_len, icv_len);

	if (!rx_sa->key.tfm) {

	if (IS_ERR(rx_sa->key.tfm)) {

		free_percpu(rx_sa->stats);

		return -1;

		return PTR_ERR(rx_sa->key.tfm);

	}



	rx_sa->active = false;
@@ -1391,12 +1391,12 @@ static int init_tx_sa(struct macsec_tx_sa *tx_sa, char *sak, int key_len, 
{

	tx_sa->stats = alloc_percpu(struct macsec_tx_sa_stats);

	if (!tx_sa->stats)

		return -1;

		return -ENOMEM;



	tx_sa->key.tfm = macsec_alloc_tfm(sak, key_len, icv_len);

	if (!tx_sa->key.tfm) {

	if (IS_ERR(tx_sa->key.tfm)) {

		free_percpu(tx_sa->stats);

		return -1;

		return PTR_ERR(tx_sa->key.tfm);

	}



	tx_sa->active = false;
@@ -1629,6 +1629,7 @@ static int macsec_add_rxsa(struct sk_buff *skb, struct genl_info *info) 
	unsigned char assoc_num;

	struct nlattr *tb_rxsc[MACSEC_RXSC_ATTR_MAX + 1];

	struct nlattr *tb_sa[MACSEC_SA_ATTR_MAX + 1];

	int err;



	if (!attrs[MACSEC_ATTR_IFINDEX])

		return -EINVAL;
@@ -1665,13 +1666,19 @@ static int macsec_add_rxsa(struct sk_buff *skb, struct genl_info *info) 
	}



	rx_sa = kmalloc(sizeof(*rx_sa), GFP_KERNEL);

	if (!rx_sa || init_rx_sa(rx_sa, nla_data(tb_sa[MACSEC_SA_ATTR_KEY]),

				 secy->key_len, secy->icv_len)) {

		kfree(rx_sa);

	if (!rx_sa) {

		rtnl_unlock();

		return -ENOMEM;

	}



	err = init_rx_sa(rx_sa, nla_data(tb_sa[MACSEC_SA_ATTR_KEY]),

			 secy->key_len, secy->icv_len);

	if (err < 0) {

		kfree(rx_sa);

		rtnl_unlock();

		return err;

	}



	if (tb_sa[MACSEC_SA_ATTR_PN]) {

		spin_lock_bh(&rx_sa->lock);

		rx_sa->next_pn = nla_get_u32(tb_sa[MACSEC_SA_ATTR_PN]);
@@ -1777,6 +1784,7 @@ static int macsec_add_txsa(struct sk_buff *skb, struct genl_info *info) 
	struct macsec_tx_sa *tx_sa;

	unsigned char assoc_num;

	struct nlattr *tb_sa[MACSEC_SA_ATTR_MAX + 1];

	int err;



	if (!attrs[MACSEC_ATTR_IFINDEX])

		return -EINVAL;
@@ -1813,13 +1821,19 @@ static int macsec_add_txsa(struct sk_buff *skb, struct genl_info *info) 
	}



	tx_sa = kmalloc(sizeof(*tx_sa), GFP_KERNEL);

	if (!tx_sa || init_tx_sa(tx_sa, nla_data(tb_sa[MACSEC_SA_ATTR_KEY]),

				 secy->key_len, secy->icv_len)) {

		kfree(tx_sa);

	if (!tx_sa) {

		rtnl_unlock();

		return -ENOMEM;

	}



	err = init_tx_sa(tx_sa, nla_data(tb_sa[MACSEC_SA_ATTR_KEY]),

			 secy->key_len, secy->icv_len);

	if (err < 0) {

		kfree(tx_sa);

		rtnl_unlock();

		return err;

	}



	nla_memcpy(tx_sa->key.id, tb_sa[MACSEC_SA_ATTR_KEYID], MACSEC_KEYID_LEN);



	spin_lock_bh(&tx_sa->lock);