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-rw-r--r--net/802/garp.c8
-rw-r--r--net/8021q/vlan.c10
-rw-r--r--net/core/netpoll.c26
-rw-r--r--net/core/pktgen.c53
-rw-r--r--net/core/rtnetlink.c5
-rw-r--r--net/core/utils.c24
-rw-r--r--net/ipv4/devinet.c4
-rw-r--r--net/ipv4/icmp.c6
-rw-r--r--net/ipv4/ip_output.c7
-rw-r--r--net/ipv4/tcp_ipv4.c4
-rw-r--r--net/ipv4/udp.c13
-rw-r--r--net/ipv4/xfrm4_policy.c34
-rw-r--r--net/sctp/protocol.c2
13 files changed, 85 insertions, 111 deletions
diff --git a/net/802/garp.c b/net/802/garp.c
index c1df2dad8c6b..5dbe8967bbd5 100644
--- a/net/802/garp.c
+++ b/net/802/garp.c
@@ -544,6 +544,11 @@ static int garp_init_port(struct net_device *dev)
return 0;
}
+static void garp_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct garp_port, rcu));
+}
+
static void garp_release_port(struct net_device *dev)
{
struct garp_port *port = rtnl_dereference(dev->garp_port);
@@ -554,8 +559,7 @@ static void garp_release_port(struct net_device *dev)
return;
}
rcu_assign_pointer(dev->garp_port, NULL);
- synchronize_rcu();
- kfree(port);
+ call_rcu(&port->rcu, garp_kfree_rcu);
}
int garp_init_applicant(struct net_device *dev, struct garp_application *appl)
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 969e7004cf86..718d635d3379 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -120,9 +120,10 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
grp->nr_vlans--;
vlan_group_set_device(grp, vlan_id, NULL);
- if (!grp->killall)
- synchronize_net();
-
+ /* Because unregister_netdevice_queue() makes sure at least one rcu
+ * grace period is respected before device freeing,
+ * we dont need to call synchronize_net() here.
+ */
unregister_netdevice_queue(dev, head);
/* If the group is now empty, kill off the group. */
@@ -478,9 +479,6 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (dev->reg_state != NETREG_UNREGISTERING)
break;
- /* Delete all VLANs for this dev. */
- grp->killall = 1;
-
for (i = 0; i < VLAN_N_VID; i++) {
vlandev = vlan_group_get_device(grp, i);
if (!vlandev)
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 46d9c3a4de2f..2d7d6d473781 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -698,32 +698,8 @@ int netpoll_parse_options(struct netpoll *np, char *opt)
if (*cur != 0) {
/* MAC address */
- if ((delim = strchr(cur, ':')) == NULL)
+ if (!mac_pton(cur, np->remote_mac))
goto parse_failed;
- *delim = 0;
- np->remote_mac[0] = simple_strtol(cur, NULL, 16);
- cur = delim + 1;
- if ((delim = strchr(cur, ':')) == NULL)
- goto parse_failed;
- *delim = 0;
- np->remote_mac[1] = simple_strtol(cur, NULL, 16);
- cur = delim + 1;
- if ((delim = strchr(cur, ':')) == NULL)
- goto parse_failed;
- *delim = 0;
- np->remote_mac[2] = simple_strtol(cur, NULL, 16);
- cur = delim + 1;
- if ((delim = strchr(cur, ':')) == NULL)
- goto parse_failed;
- *delim = 0;
- np->remote_mac[3] = simple_strtol(cur, NULL, 16);
- cur = delim + 1;
- if ((delim = strchr(cur, ':')) == NULL)
- goto parse_failed;
- *delim = 0;
- np->remote_mac[4] = simple_strtol(cur, NULL, 16);
- cur = delim + 1;
- np->remote_mac[5] = simple_strtol(cur, NULL, 16);
}
netpoll_print_options(np);
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index d41d88b53e18..379270f14771 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -1420,11 +1420,6 @@ static ssize_t pktgen_if_write(struct file *file,
return count;
}
if (!strcmp(name, "dst_mac")) {
- char *v = valstr;
- unsigned char old_dmac[ETH_ALEN];
- unsigned char *m = pkt_dev->dst_mac;
- memcpy(old_dmac, pkt_dev->dst_mac, ETH_ALEN);
-
len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
if (len < 0)
return len;
@@ -1432,35 +1427,16 @@ static ssize_t pktgen_if_write(struct file *file,
memset(valstr, 0, sizeof(valstr));
if (copy_from_user(valstr, &user_buffer[i], len))
return -EFAULT;
- i += len;
-
- for (*m = 0; *v && m < pkt_dev->dst_mac + 6; v++) {
- int value;
-
- value = hex_to_bin(*v);
- if (value >= 0)
- *m = *m * 16 + value;
-
- if (*v == ':') {
- m++;
- *m = 0;
- }
- }
+ if (!mac_pton(valstr, pkt_dev->dst_mac))
+ return -EINVAL;
/* Set up Dest MAC */
- if (compare_ether_addr(old_dmac, pkt_dev->dst_mac))
- memcpy(&(pkt_dev->hh[0]), pkt_dev->dst_mac, ETH_ALEN);
+ memcpy(&pkt_dev->hh[0], pkt_dev->dst_mac, ETH_ALEN);
- sprintf(pg_result, "OK: dstmac");
+ sprintf(pg_result, "OK: dstmac %pM", pkt_dev->dst_mac);
return count;
}
if (!strcmp(name, "src_mac")) {
- char *v = valstr;
- unsigned char old_smac[ETH_ALEN];
- unsigned char *m = pkt_dev->src_mac;
-
- memcpy(old_smac, pkt_dev->src_mac, ETH_ALEN);
-
len = strn_len(&user_buffer[i], sizeof(valstr) - 1);
if (len < 0)
return len;
@@ -1468,26 +1444,13 @@ static ssize_t pktgen_if_write(struct file *file,
memset(valstr, 0, sizeof(valstr));
if (copy_from_user(valstr, &user_buffer[i], len))
return -EFAULT;
- i += len;
-
- for (*m = 0; *v && m < pkt_dev->src_mac + 6; v++) {
- int value;
-
- value = hex_to_bin(*v);
- if (value >= 0)
- *m = *m * 16 + value;
-
- if (*v == ':') {
- m++;
- *m = 0;
- }
- }
+ if (!mac_pton(valstr, pkt_dev->src_mac))
+ return -EINVAL;
/* Set up Src MAC */
- if (compare_ether_addr(old_smac, pkt_dev->src_mac))
- memcpy(&(pkt_dev->hh[6]), pkt_dev->src_mac, ETH_ALEN);
+ memcpy(&pkt_dev->hh[6], pkt_dev->src_mac, ETH_ALEN);
- sprintf(pg_result, "OK: srcmac");
+ sprintf(pg_result, "OK: srcmac %pM", pkt_dev->src_mac);
return count;
}
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 5a160f4a1ba0..d2ba2597c75a 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1501,6 +1501,7 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
char ifname[IFNAMSIZ];
struct nlattr *tb[IFLA_MAX+1];
int err;
+ LIST_HEAD(list_kill);
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
if (err < 0)
@@ -1524,7 +1525,9 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
if (!ops)
return -EOPNOTSUPP;
- ops->dellink(dev, NULL);
+ ops->dellink(dev, &list_kill);
+ unregister_netdevice_many(&list_kill);
+ list_del(&list_kill);
return 0;
}
diff --git a/net/core/utils.c b/net/core/utils.c
index 5fea0ab21902..2012bc797f9c 100644
--- a/net/core/utils.c
+++ b/net/core/utils.c
@@ -296,3 +296,27 @@ void inet_proto_csum_replace4(__sum16 *sum, struct sk_buff *skb,
csum_unfold(*sum)));
}
EXPORT_SYMBOL(inet_proto_csum_replace4);
+
+int mac_pton(const char *s, u8 *mac)
+{
+ int i;
+
+ /* XX:XX:XX:XX:XX:XX */
+ if (strlen(s) < 3 * ETH_ALEN - 1)
+ return 0;
+
+ /* Don't dirty result unless string is valid MAC. */
+ for (i = 0; i < ETH_ALEN; i++) {
+ if (!strchr("0123456789abcdefABCDEF", s[i * 3]))
+ return 0;
+ if (!strchr("0123456789abcdefABCDEF", s[i * 3 + 1]))
+ return 0;
+ if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
+ return 0;
+ }
+ for (i = 0; i < ETH_ALEN; i++) {
+ mac[i] = (hex_to_bin(s[i * 3]) << 4) | hex_to_bin(s[i * 3 + 1]);
+ }
+ return 1;
+}
+EXPORT_SYMBOL(mac_pton);
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index cd9ca0811cfa..0d4a184af16f 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1369,7 +1369,7 @@ errout:
static size_t inet_get_link_af_size(const struct net_device *dev)
{
- struct in_device *in_dev = __in_dev_get_rtnl(dev);
+ struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr);
if (!in_dev)
return 0;
@@ -1379,7 +1379,7 @@ static size_t inet_get_link_af_size(const struct net_device *dev)
static int inet_fill_link_af(struct sk_buff *skb, const struct net_device *dev)
{
- struct in_device *in_dev = __in_dev_get_rtnl(dev);
+ struct in_device *in_dev = rcu_dereference_rtnl(dev->ip_ptr);
struct nlattr *nla;
int i;
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 853a670f6df6..3314394f0aab 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -345,7 +345,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
icmp_param->data.icmph.checksum = 0;
inet->tos = ip_hdr(skb)->tos;
- daddr = ipc.addr = rt->rt_src;
+ daddr = ipc.addr = ip_hdr(skb)->saddr;
ipc.opt = NULL;
ipc.tx_flags = 0;
if (icmp_param->replyopts.opt.opt.optlen) {
@@ -930,12 +930,12 @@ static void icmp_address_reply(struct sk_buff *skb)
BUG_ON(mp == NULL);
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
if (*mp == ifa->ifa_mask &&
- inet_ifa_match(rt->rt_src, ifa))
+ inet_ifa_match(ip_hdr(skb)->saddr, ifa))
break;
}
if (!ifa && net_ratelimit()) {
printk(KERN_INFO "Wrong address mask %pI4 from %s/%pI4\n",
- mp, dev->name, &rt->rt_src);
+ mp, dev->name, &ip_hdr(skb)->saddr);
}
}
}
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index cd89d22902a9..70778d48aa7b 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -1459,20 +1459,19 @@ static int ip_reply_glue_bits(void *dptr, char *to, int offset,
* Should run single threaded per socket because it uses the sock
* structure to pass arguments.
*/
-void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *arg,
- unsigned int len)
+void ip_send_reply(struct sock *sk, struct sk_buff *skb, __be32 daddr,
+ struct ip_reply_arg *arg, unsigned int len)
{
struct inet_sock *inet = inet_sk(sk);
struct ip_options_data replyopts;
struct ipcm_cookie ipc;
struct flowi4 fl4;
- __be32 daddr;
struct rtable *rt = skb_rtable(skb);
if (ip_options_echo(&replyopts.opt.opt, skb))
return;
- daddr = ipc.addr = rt->rt_src;
+ ipc.addr = daddr;
ipc.opt = NULL;
ipc.tx_flags = 0;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 2b655031b392..f67fb34e16e5 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -651,7 +651,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
arg.flags = (sk && inet_sk(sk)->transparent) ? IP_REPLY_ARG_NOSRCCHECK : 0;
net = dev_net(skb_dst(skb)->dev);
- ip_send_reply(net->ipv4.tcp_sock, skb,
+ ip_send_reply(net->ipv4.tcp_sock, skb, ip_hdr(skb)->saddr,
&arg, arg.iov[0].iov_len);
TCP_INC_STATS_BH(net, TCP_MIB_OUTSEGS);
@@ -726,7 +726,7 @@ static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
if (oif)
arg.bound_dev_if = oif;
- ip_send_reply(net->ipv4.tcp_sock, skb,
+ ip_send_reply(net->ipv4.tcp_sock, skb, ip_hdr(skb)->saddr,
&arg, arg.iov[0].iov_len);
TCP_INC_STATS_BH(net, TCP_MIB_OUTSEGS);
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 66341a3c8d36..599374f65c76 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -706,12 +706,11 @@ static void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst)
}
}
-static int udp_send_skb(struct sk_buff *skb, __be32 daddr, __be32 dport)
+static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4)
{
struct sock *sk = skb->sk;
struct inet_sock *inet = inet_sk(sk);
struct udphdr *uh;
- struct rtable *rt = (struct rtable *)skb_dst(skb);
int err = 0;
int is_udplite = IS_UDPLITE(sk);
int offset = skb_transport_offset(skb);
@@ -723,7 +722,7 @@ static int udp_send_skb(struct sk_buff *skb, __be32 daddr, __be32 dport)
*/
uh = udp_hdr(skb);
uh->source = inet->inet_sport;
- uh->dest = dport;
+ uh->dest = fl4->fl4_dport;
uh->len = htons(len);
uh->check = 0;
@@ -737,14 +736,14 @@ static int udp_send_skb(struct sk_buff *skb, __be32 daddr, __be32 dport)
} else if (skb->ip_summed == CHECKSUM_PARTIAL) { /* UDP hardware csum */
- udp4_hwcsum(skb, rt->rt_src, daddr);
+ udp4_hwcsum(skb, fl4->saddr, fl4->daddr);
goto send;
} else
csum = udp_csum(skb);
/* add protocol-dependent pseudo-header */
- uh->check = csum_tcpudp_magic(rt->rt_src, daddr, len,
+ uh->check = csum_tcpudp_magic(fl4->saddr, fl4->daddr, len,
sk->sk_protocol, csum);
if (uh->check == 0)
uh->check = CSUM_MANGLED_0;
@@ -778,7 +777,7 @@ static int udp_push_pending_frames(struct sock *sk)
if (!skb)
goto out;
- err = udp_send_skb(skb, fl4->daddr, fl4->fl4_dport);
+ err = udp_send_skb(skb, fl4);
out:
up->len = 0;
@@ -963,7 +962,7 @@ back_from_confirm:
msg->msg_flags);
err = PTR_ERR(skb);
if (skb && !IS_ERR(skb))
- err = udp_send_skb(skb, daddr, dport);
+ err = udp_send_skb(skb, fl4);
goto out;
}
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 7ff973bd02dd..981e43eaf704 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -18,38 +18,46 @@
static struct xfrm_policy_afinfo xfrm4_policy_afinfo;
-static struct dst_entry *xfrm4_dst_lookup(struct net *net, int tos,
- const xfrm_address_t *saddr,
- const xfrm_address_t *daddr)
+static struct dst_entry *__xfrm4_dst_lookup(struct net *net, struct flowi4 *fl4,
+ int tos,
+ const xfrm_address_t *saddr,
+ const xfrm_address_t *daddr)
{
- struct flowi4 fl4 = {
- .daddr = daddr->a4,
- .flowi4_tos = tos,
- };
struct rtable *rt;
+ memset(fl4, 0, sizeof(*fl4));
+ fl4->daddr = daddr->a4;
+ fl4->flowi4_tos = tos;
if (saddr)
- fl4.saddr = saddr->a4;
+ fl4->saddr = saddr->a4;
- rt = __ip_route_output_key(net, &fl4);
+ rt = __ip_route_output_key(net, fl4);
if (!IS_ERR(rt))
return &rt->dst;
return ERR_CAST(rt);
}
+static struct dst_entry *xfrm4_dst_lookup(struct net *net, int tos,
+ const xfrm_address_t *saddr,
+ const xfrm_address_t *daddr)
+{
+ struct flowi4 fl4;
+
+ return __xfrm4_dst_lookup(net, &fl4, tos, saddr, daddr);
+}
+
static int xfrm4_get_saddr(struct net *net,
xfrm_address_t *saddr, xfrm_address_t *daddr)
{
struct dst_entry *dst;
- struct rtable *rt;
+ struct flowi4 fl4;
- dst = xfrm4_dst_lookup(net, 0, NULL, daddr);
+ dst = __xfrm4_dst_lookup(net, &fl4, 0, NULL, daddr);
if (IS_ERR(dst))
return -EHOSTUNREACH;
- rt = (struct rtable *)dst;
- saddr->a4 = rt->rt_src;
+ saddr->a4 = fl4.saddr;
dst_release(dst);
return 0;
}
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 4f270ac48226..4de77cb80d88 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -566,7 +566,7 @@ static void sctp_v4_get_saddr(struct sctp_sock *sk,
if (rt) {
saddr->v4.sin_family = AF_INET;
- saddr->v4.sin_addr.s_addr = rt->rt_src;
+ saddr->v4.sin_addr.s_addr = fl->u.ip4.saddr;
}
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.