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Diffstat (limited to 'net/ipv4/ip_gre.c')
-rw-r--r--net/ipv4/ip_gre.c102
1 files changed, 62 insertions, 40 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index b57532d4742c..f49047b79609 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -169,37 +169,56 @@ struct ipgre_net {
/* often modified stats are per cpu, other are shared (netdev->stats) */
struct pcpu_tstats {
- unsigned long rx_packets;
- unsigned long rx_bytes;
- unsigned long tx_packets;
- unsigned long tx_bytes;
-} __attribute__((aligned(4*sizeof(unsigned long))));
+ u64 rx_packets;
+ u64 rx_bytes;
+ u64 tx_packets;
+ u64 tx_bytes;
+ struct u64_stats_sync syncp;
+};
-static struct net_device_stats *ipgre_get_stats(struct net_device *dev)
+static struct rtnl_link_stats64 *ipgre_get_stats64(struct net_device *dev,
+ struct rtnl_link_stats64 *tot)
{
- struct pcpu_tstats sum = { 0 };
int i;
for_each_possible_cpu(i) {
const struct pcpu_tstats *tstats = per_cpu_ptr(dev->tstats, i);
-
- sum.rx_packets += tstats->rx_packets;
- sum.rx_bytes += tstats->rx_bytes;
- sum.tx_packets += tstats->tx_packets;
- sum.tx_bytes += tstats->tx_bytes;
+ u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
+ unsigned int start;
+
+ do {
+ start = u64_stats_fetch_begin_bh(&tstats->syncp);
+ rx_packets = tstats->rx_packets;
+ tx_packets = tstats->tx_packets;
+ rx_bytes = tstats->rx_bytes;
+ tx_bytes = tstats->tx_bytes;
+ } while (u64_stats_fetch_retry_bh(&tstats->syncp, start));
+
+ tot->rx_packets += rx_packets;
+ tot->tx_packets += tx_packets;
+ tot->rx_bytes += rx_bytes;
+ tot->tx_bytes += tx_bytes;
}
- dev->stats.rx_packets = sum.rx_packets;
- dev->stats.rx_bytes = sum.rx_bytes;
- dev->stats.tx_packets = sum.tx_packets;
- dev->stats.tx_bytes = sum.tx_bytes;
- return &dev->stats;
+
+ tot->multicast = dev->stats.multicast;
+ tot->rx_crc_errors = dev->stats.rx_crc_errors;
+ tot->rx_fifo_errors = dev->stats.rx_fifo_errors;
+ tot->rx_length_errors = dev->stats.rx_length_errors;
+ tot->rx_errors = dev->stats.rx_errors;
+ tot->tx_fifo_errors = dev->stats.tx_fifo_errors;
+ tot->tx_carrier_errors = dev->stats.tx_carrier_errors;
+ tot->tx_dropped = dev->stats.tx_dropped;
+ tot->tx_aborted_errors = dev->stats.tx_aborted_errors;
+ tot->tx_errors = dev->stats.tx_errors;
+
+ return tot;
}
/* Given src, dst and key, find appropriate for input tunnel. */
-static struct ip_tunnel * ipgre_tunnel_lookup(struct net_device *dev,
- __be32 remote, __be32 local,
- __be32 key, __be16 gre_proto)
+static struct ip_tunnel *ipgre_tunnel_lookup(struct net_device *dev,
+ __be32 remote, __be32 local,
+ __be32 key, __be16 gre_proto)
{
struct net *net = dev_net(dev);
int link = dev->ifindex;
@@ -464,7 +483,7 @@ static void ipgre_err(struct sk_buff *skb, u32 info)
*/
const struct iphdr *iph = (const struct iphdr *)skb->data;
- __be16 *p = (__be16*)(skb->data+(iph->ihl<<2));
+ __be16 *p = (__be16 *)(skb->data+(iph->ihl<<2));
int grehlen = (iph->ihl<<2) + 4;
const int type = icmp_hdr(skb)->type;
const int code = icmp_hdr(skb)->code;
@@ -574,7 +593,7 @@ static int ipgre_rcv(struct sk_buff *skb)
iph = ip_hdr(skb);
h = skb->data;
- flags = *(__be16*)h;
+ flags = *(__be16 *)h;
if (flags&(GRE_CSUM|GRE_KEY|GRE_ROUTING|GRE_SEQ|GRE_VERSION)) {
/* - Version must be 0.
@@ -598,11 +617,11 @@ static int ipgre_rcv(struct sk_buff *skb)
offset += 4;
}
if (flags&GRE_KEY) {
- key = *(__be32*)(h + offset);
+ key = *(__be32 *)(h + offset);
offset += 4;
}
if (flags&GRE_SEQ) {
- seqno = ntohl(*(__be32*)(h + offset));
+ seqno = ntohl(*(__be32 *)(h + offset));
offset += 4;
}
}
@@ -672,8 +691,10 @@ static int ipgre_rcv(struct sk_buff *skb)
}
tstats = this_cpu_ptr(tunnel->dev->tstats);
+ u64_stats_update_begin(&tstats->syncp);
tstats->rx_packets++;
tstats->rx_bytes += skb->len;
+ u64_stats_update_end(&tstats->syncp);
__skb_tunnel_rx(skb, tunnel->dev);
@@ -900,7 +921,7 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
htons(ETH_P_TEB) : skb->protocol;
if (tunnel->parms.o_flags&(GRE_KEY|GRE_CSUM|GRE_SEQ)) {
- __be32 *ptr = (__be32*)(((u8*)iph) + tunnel->hlen - 4);
+ __be32 *ptr = (__be32 *)(((u8 *)iph) + tunnel->hlen - 4);
if (tunnel->parms.o_flags&GRE_SEQ) {
++tunnel->o_seqno;
@@ -913,7 +934,7 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
}
if (tunnel->parms.o_flags&GRE_CSUM) {
*ptr = 0;
- *(__sum16*)ptr = ip_compute_csum((void*)(iph+1), skb->len - sizeof(struct iphdr));
+ *(__sum16 *)ptr = ip_compute_csum((void *)(iph+1), skb->len - sizeof(struct iphdr));
}
}
@@ -1169,7 +1190,7 @@ static int ipgre_header(struct sk_buff *skb, struct net_device *dev,
{
struct ip_tunnel *t = netdev_priv(dev);
struct iphdr *iph = (struct iphdr *)skb_push(skb, t->hlen);
- __be16 *p = (__be16*)(iph+1);
+ __be16 *p = (__be16 *)(iph+1);
memcpy(iph, &t->parms.iph, sizeof(struct iphdr));
p[0] = t->parms.o_flags;
@@ -1253,7 +1274,7 @@ static const struct net_device_ops ipgre_netdev_ops = {
.ndo_start_xmit = ipgre_tunnel_xmit,
.ndo_do_ioctl = ipgre_tunnel_ioctl,
.ndo_change_mtu = ipgre_tunnel_change_mtu,
- .ndo_get_stats = ipgre_get_stats,
+ .ndo_get_stats64 = ipgre_get_stats64,
};
static void ipgre_dev_free(struct net_device *dev)
@@ -1507,7 +1528,7 @@ static const struct net_device_ops ipgre_tap_netdev_ops = {
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
.ndo_change_mtu = ipgre_tunnel_change_mtu,
- .ndo_get_stats = ipgre_get_stats,
+ .ndo_get_stats64 = ipgre_get_stats64,
};
static void ipgre_tap_setup(struct net_device *dev)
@@ -1654,17 +1675,18 @@ static int ipgre_fill_info(struct sk_buff *skb, const struct net_device *dev)
struct ip_tunnel *t = netdev_priv(dev);
struct ip_tunnel_parm *p = &t->parms;
- NLA_PUT_U32(skb, IFLA_GRE_LINK, p->link);
- NLA_PUT_BE16(skb, IFLA_GRE_IFLAGS, p->i_flags);
- NLA_PUT_BE16(skb, IFLA_GRE_OFLAGS, p->o_flags);
- NLA_PUT_BE32(skb, IFLA_GRE_IKEY, p->i_key);
- NLA_PUT_BE32(skb, IFLA_GRE_OKEY, p->o_key);
- NLA_PUT_BE32(skb, IFLA_GRE_LOCAL, p->iph.saddr);
- NLA_PUT_BE32(skb, IFLA_GRE_REMOTE, p->iph.daddr);
- NLA_PUT_U8(skb, IFLA_GRE_TTL, p->iph.ttl);
- NLA_PUT_U8(skb, IFLA_GRE_TOS, p->iph.tos);
- NLA_PUT_U8(skb, IFLA_GRE_PMTUDISC, !!(p->iph.frag_off & htons(IP_DF)));
-
+ if (nla_put_u32(skb, IFLA_GRE_LINK, p->link) ||
+ nla_put_be16(skb, IFLA_GRE_IFLAGS, p->i_flags) ||
+ nla_put_be16(skb, IFLA_GRE_OFLAGS, p->o_flags) ||
+ nla_put_be32(skb, IFLA_GRE_IKEY, p->i_key) ||
+ nla_put_be32(skb, IFLA_GRE_OKEY, p->o_key) ||
+ nla_put_be32(skb, IFLA_GRE_LOCAL, p->iph.saddr) ||
+ nla_put_be32(skb, IFLA_GRE_REMOTE, p->iph.daddr) ||
+ nla_put_u8(skb, IFLA_GRE_TTL, p->iph.ttl) ||
+ nla_put_u8(skb, IFLA_GRE_TOS, p->iph.tos) ||
+ nla_put_u8(skb, IFLA_GRE_PMTUDISC,
+ !!(p->iph.frag_off & htons(IP_DF))))
+ goto nla_put_failure;
return 0;
nla_put_failure:
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.