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path: root/drivers/net/vxlan.c
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Diffstat (limited to 'drivers/net/vxlan.c')
-rw-r--r--drivers/net/vxlan.c101
1 files changed, 67 insertions, 34 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index ba363cedef80..6fa8e165878e 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -593,7 +593,7 @@ static struct sk_buff **vxlan_gro_receive(struct sk_buff **head,
}
}
- pp = eth_gro_receive(head, skb);
+ pp = call_gro_receive(eth_gro_receive, head, skb);
out:
skb_gro_remcsum_cleanup(skb, &grc);
@@ -1254,7 +1254,7 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
/* Need Vxlan and inner Ethernet header to be present */
if (!pskb_may_pull(skb, VXLAN_HLEN))
- goto error;
+ goto drop;
vxh = (struct vxlanhdr *)(udp_hdr(skb) + 1);
flags = ntohl(vxh->vx_flags);
@@ -1306,8 +1306,10 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
gbp = (struct vxlanhdr_gbp *)vxh;
md->gbp = ntohs(gbp->policy_id);
- if (tun_dst)
+ if (tun_dst) {
tun_dst->u.tun_info.key.tun_flags |= TUNNEL_VXLAN_OPT;
+ tun_dst->u.tun_info.options_len = sizeof(*md);
+ }
if (gbp->dont_learn)
md->gbp |= VXLAN_GBP_DONT_LEARN;
@@ -1342,13 +1344,7 @@ drop:
bad_flags:
netdev_dbg(skb->dev, "invalid vxlan flags=%#x vni=%#x\n",
ntohl(vxh->vx_flags), ntohl(vxh->vx_vni));
-
-error:
- if (tun_dst)
- dst_release((struct dst_entry *)tun_dst);
-
- /* Return non vxlan pkt */
- return 1;
+ goto drop;
}
static int arp_reduce(struct net_device *dev, struct sk_buff *skb)
@@ -1984,11 +1980,6 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
vxlan->cfg.port_max, true);
if (info) {
- if (info->key.tun_flags & TUNNEL_CSUM)
- flags |= VXLAN_F_UDP_CSUM;
- else
- flags &= ~VXLAN_F_UDP_CSUM;
-
ttl = info->key.ttl;
tos = info->key.tos;
@@ -2003,8 +1994,15 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
goto drop;
sk = vxlan->vn4_sock->sock->sk;
- if (info && (info->key.tun_flags & TUNNEL_DONT_FRAGMENT))
- df = htons(IP_DF);
+ if (info) {
+ if (info->key.tun_flags & TUNNEL_DONT_FRAGMENT)
+ df = htons(IP_DF);
+
+ if (info->key.tun_flags & TUNNEL_CSUM)
+ flags |= VXLAN_F_UDP_CSUM;
+ else
+ flags &= ~VXLAN_F_UDP_CSUM;
+ }
memset(&fl4, 0, sizeof(fl4));
fl4.flowi4_oif = rdst ? rdst->remote_ifindex : 0;
@@ -2102,6 +2100,13 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
return;
}
+ if (info) {
+ if (info->key.tun_flags & TUNNEL_CSUM)
+ flags &= ~VXLAN_F_UDP_ZERO_CSUM6_TX;
+ else
+ flags |= VXLAN_F_UDP_ZERO_CSUM6_TX;
+ }
+
ttl = ttl ? : ip6_dst_hoplimit(ndst);
err = vxlan6_xmit_skb(ndst, sk, skb, dev, &saddr, &dst->sin6.sin6_addr,
0, ttl, src_port, dst_port, htonl(vni << 8), md,
@@ -2359,29 +2364,43 @@ static void vxlan_set_multicast_list(struct net_device *dev)
{
}
-static int vxlan_change_mtu(struct net_device *dev, int new_mtu)
+static int __vxlan_change_mtu(struct net_device *dev,
+ struct net_device *lowerdev,
+ struct vxlan_rdst *dst, int new_mtu, bool strict)
{
- struct vxlan_dev *vxlan = netdev_priv(dev);
- struct vxlan_rdst *dst = &vxlan->default_dst;
- struct net_device *lowerdev;
- int max_mtu;
+ int max_mtu = IP_MAX_MTU;
- lowerdev = __dev_get_by_index(vxlan->net, dst->remote_ifindex);
- if (lowerdev == NULL)
- return eth_change_mtu(dev, new_mtu);
+ if (lowerdev)
+ max_mtu = lowerdev->mtu;
if (dst->remote_ip.sa.sa_family == AF_INET6)
- max_mtu = lowerdev->mtu - VXLAN6_HEADROOM;
+ max_mtu -= VXLAN6_HEADROOM;
else
- max_mtu = lowerdev->mtu - VXLAN_HEADROOM;
+ max_mtu -= VXLAN_HEADROOM;
- if (new_mtu < 68 || new_mtu > max_mtu)
+ if (new_mtu < 68)
return -EINVAL;
+ if (new_mtu > max_mtu) {
+ if (strict)
+ return -EINVAL;
+
+ new_mtu = max_mtu;
+ }
+
dev->mtu = new_mtu;
return 0;
}
+static int vxlan_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct vxlan_dev *vxlan = netdev_priv(dev);
+ struct vxlan_rdst *dst = &vxlan->default_dst;
+ struct net_device *lowerdev = __dev_get_by_index(vxlan->net,
+ dst->remote_ifindex);
+ return __vxlan_change_mtu(dev, lowerdev, dst, new_mtu, true);
+}
+
static int egress_ipv4_tun_info(struct net_device *dev, struct sk_buff *skb,
struct ip_tunnel_info *info,
__be16 sport, __be16 dport)
@@ -2751,12 +2770,13 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,
struct vxlan_config *conf)
{
struct vxlan_net *vn = net_generic(src_net, vxlan_net_id);
- struct vxlan_dev *vxlan = netdev_priv(dev);
+ struct vxlan_dev *vxlan = netdev_priv(dev), *tmp;
struct vxlan_rdst *dst = &vxlan->default_dst;
unsigned short needed_headroom = ETH_HLEN;
int err;
bool use_ipv6 = false;
__be16 default_port = vxlan->cfg.dst_port;
+ struct net_device *lowerdev = NULL;
vxlan->net = src_net;
@@ -2777,9 +2797,7 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,
}
if (conf->remote_ifindex) {
- struct net_device *lowerdev
- = __dev_get_by_index(src_net, conf->remote_ifindex);
-
+ lowerdev = __dev_get_by_index(src_net, conf->remote_ifindex);
dst->remote_ifindex = conf->remote_ifindex;
if (!lowerdev) {
@@ -2803,6 +2821,12 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,
needed_headroom = lowerdev->hard_header_len;
}
+ if (conf->mtu) {
+ err = __vxlan_change_mtu(dev, lowerdev, dst, conf->mtu, false);
+ if (err)
+ return err;
+ }
+
if (use_ipv6 || conf->flags & VXLAN_F_COLLECT_METADATA)
needed_headroom += VXLAN6_HEADROOM;
else
@@ -2817,9 +2841,15 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,
if (!vxlan->cfg.age_interval)
vxlan->cfg.age_interval = FDB_AGE_DEFAULT;
- if (vxlan_find_vni(src_net, conf->vni, use_ipv6 ? AF_INET6 : AF_INET,
- vxlan->cfg.dst_port, vxlan->flags))
+ list_for_each_entry(tmp, &vn->vxlan_list, next) {
+ if (tmp->cfg.vni == conf->vni &&
+ (tmp->default_dst.remote_ip.sa.sa_family == AF_INET6 ||
+ tmp->cfg.saddr.sa.sa_family == AF_INET6) == use_ipv6 &&
+ tmp->cfg.dst_port == vxlan->cfg.dst_port &&
+ (tmp->flags & VXLAN_F_RCV_FLAGS) ==
+ (vxlan->flags & VXLAN_F_RCV_FLAGS))
return -EEXIST;
+ }
dev->ethtool_ops = &vxlan_ethtool_ops;
@@ -2974,6 +3004,9 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
if (data[IFLA_VXLAN_REMCSUM_NOPARTIAL])
conf.flags |= VXLAN_F_REMCSUM_NOPARTIAL;
+ if (tb[IFLA_MTU])
+ conf.mtu = nla_get_u32(tb[IFLA_MTU]);
+
err = vxlan_dev_configure(src_net, dev, &conf);
switch (err) {
case -ENODEV:
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-11 00:06:00 +0000