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path: root/drivers/net/macsec.c
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Diffstat (limited to 'drivers/net/macsec.c')
-rw-r--r--drivers/net/macsec.c65
1 files changed, 42 insertions, 23 deletions
diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 84d3e5c..c638561 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -880,12 +880,12 @@ static struct sk_buff *macsec_decrypt(struct sk_buff *skb,
macsec_skb_cb(skb)->valid = false;
skb = skb_share_check(skb, GFP_ATOMIC);
if (!skb)
- return NULL;
+ return ERR_PTR(-ENOMEM);
req = aead_request_alloc(rx_sa->key.tfm, GFP_ATOMIC);
if (!req) {
kfree_skb(skb);
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
hdr = (struct macsec_eth_header *)skb->data;
@@ -905,7 +905,7 @@ static struct sk_buff *macsec_decrypt(struct sk_buff *skb,
skb = skb_unshare(skb, GFP_ATOMIC);
if (!skb) {
aead_request_free(req);
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
} else {
/* integrity only: all headers + data authenticated */
@@ -921,14 +921,14 @@ static struct sk_buff *macsec_decrypt(struct sk_buff *skb,
dev_hold(dev);
ret = crypto_aead_decrypt(req);
if (ret == -EINPROGRESS) {
- return NULL;
+ return ERR_PTR(ret);
} else if (ret != 0) {
/* decryption/authentication failed
* 10.6 if validateFrames is disabled, deliver anyway
*/
if (ret != -EBADMSG) {
kfree_skb(skb);
- skb = NULL;
+ skb = ERR_PTR(ret);
}
} else {
macsec_skb_cb(skb)->valid = true;
@@ -1146,8 +1146,10 @@ static rx_handler_result_t macsec_handle_frame(struct sk_buff **pskb)
secy->validate_frames != MACSEC_VALIDATE_DISABLED)
skb = macsec_decrypt(skb, dev, rx_sa, sci, secy);
- if (!skb) {
- macsec_rxsa_put(rx_sa);
+ if (IS_ERR(skb)) {
+ /* the decrypt callback needs the reference */
+ if (PTR_ERR(skb) != -EINPROGRESS)
+ macsec_rxsa_put(rx_sa);
rcu_read_unlock();
*pskb = NULL;
return RX_HANDLER_CONSUMED;
@@ -1161,7 +1163,8 @@ deliver:
macsec_extra_len(macsec_skb_cb(skb)->has_sci));
macsec_reset_skb(skb, secy->netdev);
- macsec_rxsa_put(rx_sa);
+ if (rx_sa)
+ macsec_rxsa_put(rx_sa);
count_rx(dev, skb->len);
rcu_read_unlock();
@@ -1622,8 +1625,9 @@ static int macsec_add_rxsa(struct sk_buff *skb, struct genl_info *info)
}
rx_sa = kmalloc(sizeof(*rx_sa), GFP_KERNEL);
- if (init_rx_sa(rx_sa, nla_data(tb_sa[MACSEC_SA_ATTR_KEY]), secy->key_len,
- secy->icv_len)) {
+ 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);
rtnl_unlock();
return -ENOMEM;
}
@@ -1768,6 +1772,7 @@ 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);
rtnl_unlock();
return -ENOMEM;
}
@@ -2227,7 +2232,8 @@ static int nla_put_secy(struct macsec_secy *secy, struct sk_buff *skb)
return 1;
if (nla_put_sci(skb, MACSEC_SECY_ATTR_SCI, secy->sci) ||
- nla_put_u64(skb, MACSEC_SECY_ATTR_CIPHER_SUITE, DEFAULT_CIPHER_ID) ||
+ nla_put_u64(skb, MACSEC_SECY_ATTR_CIPHER_SUITE,
+ MACSEC_DEFAULT_CIPHER_ID) ||
nla_put_u8(skb, MACSEC_SECY_ATTR_ICV_LEN, secy->icv_len) ||
nla_put_u8(skb, MACSEC_SECY_ATTR_OPER, secy->operational) ||
nla_put_u8(skb, MACSEC_SECY_ATTR_PROTECT, secy->protect_frames) ||
@@ -2268,7 +2274,7 @@ static int dump_secy(struct macsec_secy *secy, struct net_device *dev,
if (!hdr)
return -EMSGSIZE;
- rtnl_lock();
+ genl_dump_check_consistent(cb, hdr, &macsec_fam);
if (nla_put_u32(skb, MACSEC_ATTR_IFINDEX, dev->ifindex))
goto nla_put_failure;
@@ -2429,18 +2435,17 @@ static int dump_secy(struct macsec_secy *secy, struct net_device *dev,
nla_nest_end(skb, rxsc_list);
- rtnl_unlock();
-
genlmsg_end(skb, hdr);
return 0;
nla_put_failure:
- rtnl_unlock();
genlmsg_cancel(skb, hdr);
return -EMSGSIZE;
}
+static int macsec_generation = 1; /* protected by RTNL */
+
static int macsec_dump_txsc(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
@@ -2450,6 +2455,10 @@ static int macsec_dump_txsc(struct sk_buff *skb, struct netlink_callback *cb)
dev_idx = cb->args[0];
d = 0;
+ rtnl_lock();
+
+ cb->seq = macsec_generation;
+
for_each_netdev(net, dev) {
struct macsec_secy *secy;
@@ -2467,6 +2476,7 @@ next:
}
done:
+ rtnl_unlock();
cb->args[0] = d;
return skb->len;
}
@@ -2920,10 +2930,14 @@ static void macsec_dellink(struct net_device *dev, struct list_head *head)
struct net_device *real_dev = macsec->real_dev;
struct macsec_rxh_data *rxd = macsec_data_rtnl(real_dev);
+ macsec_generation++;
+
unregister_netdevice_queue(dev, head);
list_del_rcu(&macsec->secys);
- if (list_empty(&rxd->secys))
+ if (list_empty(&rxd->secys)) {
netdev_rx_handler_unregister(real_dev);
+ kfree(rxd);
+ }
macsec_del_dev(macsec);
}
@@ -2945,8 +2959,10 @@ static int register_macsec_dev(struct net_device *real_dev,
err = netdev_rx_handler_register(real_dev, macsec_handle_frame,
rxd);
- if (err < 0)
+ if (err < 0) {
+ kfree(rxd);
return err;
+ }
}
list_add_tail_rcu(&macsec->secys, &rxd->secys);
@@ -3066,6 +3082,8 @@ static int macsec_newlink(struct net *net, struct net_device *dev,
if (err < 0)
goto del_dev;
+ macsec_generation++;
+
dev_hold(real_dev);
return 0;
@@ -3079,7 +3097,7 @@ unregister:
static int macsec_validate_attr(struct nlattr *tb[], struct nlattr *data[])
{
- u64 csid = DEFAULT_CIPHER_ID;
+ u64 csid = MACSEC_DEFAULT_CIPHER_ID;
u8 icv_len = DEFAULT_ICV_LEN;
int flag;
bool es, scb, sci;
@@ -3094,8 +3112,8 @@ static int macsec_validate_attr(struct nlattr *tb[], struct nlattr *data[])
icv_len = nla_get_u8(data[IFLA_MACSEC_ICV_LEN]);
switch (csid) {
- case DEFAULT_CIPHER_ID:
- case DEFAULT_CIPHER_ALT:
+ case MACSEC_DEFAULT_CIPHER_ID:
+ case MACSEC_DEFAULT_CIPHER_ALT:
if (icv_len < MACSEC_MIN_ICV_LEN ||
icv_len > MACSEC_MAX_ICV_LEN)
return -EINVAL;
@@ -3129,8 +3147,8 @@ static int macsec_validate_attr(struct nlattr *tb[], struct nlattr *data[])
nla_get_u8(data[IFLA_MACSEC_VALIDATION]) > MACSEC_VALIDATE_MAX)
return -EINVAL;
- if ((data[IFLA_MACSEC_PROTECT] &&
- nla_get_u8(data[IFLA_MACSEC_PROTECT])) &&
+ if ((data[IFLA_MACSEC_REPLAY_PROTECT] &&
+ nla_get_u8(data[IFLA_MACSEC_REPLAY_PROTECT])) &&
!data[IFLA_MACSEC_WINDOW])
return -EINVAL;
@@ -3168,7 +3186,8 @@ static int macsec_fill_info(struct sk_buff *skb,
if (nla_put_sci(skb, IFLA_MACSEC_SCI, secy->sci) ||
nla_put_u8(skb, IFLA_MACSEC_ICV_LEN, secy->icv_len) ||
- nla_put_u64(skb, IFLA_MACSEC_CIPHER_SUITE, DEFAULT_CIPHER_ID) ||
+ nla_put_u64(skb, IFLA_MACSEC_CIPHER_SUITE,
+ MACSEC_DEFAULT_CIPHER_ID) ||
nla_put_u8(skb, IFLA_MACSEC_ENCODING_SA, tx_sc->encoding_sa) ||
nla_put_u8(skb, IFLA_MACSEC_ENCRYPT, tx_sc->encrypt) ||
nla_put_u8(skb, IFLA_MACSEC_PROTECT, secy->protect_frames) ||
generated by cgit v0.10.2 at 2024-11-05 07:02:54 (GMT)