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Diffstat (limited to 'net/ipv4/fou.c')
-rw-r--r--net/ipv4/fou.c83
1 files changed, 50 insertions, 33 deletions
diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c
index 780484243e14..d039f8fff57f 100644
--- a/net/ipv4/fou.c
+++ b/net/ipv4/fou.c
@@ -22,7 +22,6 @@ struct fou {
u8 flags;
__be16 port;
u16 type;
- struct udp_offload udp_offloads;
struct list_head list;
struct rcu_head rcu;
};
@@ -48,7 +47,7 @@ static inline struct fou *fou_from_sock(struct sock *sk)
return sk->sk_user_data;
}
-static void fou_recv_pull(struct sk_buff *skb, size_t len)
+static int fou_recv_pull(struct sk_buff *skb, size_t len)
{
struct iphdr *iph = ip_hdr(skb);
@@ -59,6 +58,7 @@ static void fou_recv_pull(struct sk_buff *skb, size_t len)
__skb_pull(skb, len);
skb_postpull_rcsum(skb, udp_hdr(skb), len);
skb_reset_transport_header(skb);
+ return iptunnel_pull_offloads(skb);
}
static int fou_udp_recv(struct sock *sk, struct sk_buff *skb)
@@ -68,9 +68,14 @@ static int fou_udp_recv(struct sock *sk, struct sk_buff *skb)
if (!fou)
return 1;
- fou_recv_pull(skb, sizeof(struct udphdr));
+ if (fou_recv_pull(skb, sizeof(struct udphdr)))
+ goto drop;
return -fou->protocol;
+
+drop:
+ kfree_skb(skb);
+ return 0;
}
static struct guehdr *gue_remcsum(struct sk_buff *skb, struct guehdr *guehdr,
@@ -170,6 +175,9 @@ static int gue_udp_recv(struct sock *sk, struct sk_buff *skb)
__skb_pull(skb, sizeof(struct udphdr) + hdrlen);
skb_reset_transport_header(skb);
+ if (iptunnel_pull_offloads(skb))
+ goto drop;
+
return -guehdr->proto_ctype;
drop:
@@ -177,15 +185,26 @@ drop:
return 0;
}
-static struct sk_buff **fou_gro_receive(struct sk_buff **head,
- struct sk_buff *skb,
- struct udp_offload *uoff)
+static struct sk_buff **fou_gro_receive(struct sock *sk,
+ struct sk_buff **head,
+ struct sk_buff *skb)
{
const struct net_offload *ops;
struct sk_buff **pp = NULL;
- u8 proto = NAPI_GRO_CB(skb)->proto;
+ u8 proto = fou_from_sock(sk)->protocol;
const struct net_offload **offloads;
+ /* We can clear the encap_mark for FOU as we are essentially doing
+ * one of two possible things. We are either adding an L4 tunnel
+ * header to the outer L3 tunnel header, or we are are simply
+ * treating the GRE tunnel header as though it is a UDP protocol
+ * specific header such as VXLAN or GENEVE.
+ */
+ NAPI_GRO_CB(skb)->encap_mark = 0;
+
+ /* Flag this frame as already having an outer encap header */
+ NAPI_GRO_CB(skb)->is_fou = 1;
+
rcu_read_lock();
offloads = NAPI_GRO_CB(skb)->is_ipv6 ? inet6_offloads : inet_offloads;
ops = rcu_dereference(offloads[proto]);
@@ -200,11 +219,11 @@ out_unlock:
return pp;
}
-static int fou_gro_complete(struct sk_buff *skb, int nhoff,
- struct udp_offload *uoff)
+static int fou_gro_complete(struct sock *sk, struct sk_buff *skb,
+ int nhoff)
{
const struct net_offload *ops;
- u8 proto = NAPI_GRO_CB(skb)->proto;
+ u8 proto = fou_from_sock(sk)->protocol;
int err = -ENOSYS;
const struct net_offload **offloads;
@@ -247,9 +266,9 @@ static struct guehdr *gue_gro_remcsum(struct sk_buff *skb, unsigned int off,
return guehdr;
}
-static struct sk_buff **gue_gro_receive(struct sk_buff **head,
- struct sk_buff *skb,
- struct udp_offload *uoff)
+static struct sk_buff **gue_gro_receive(struct sock *sk,
+ struct sk_buff **head,
+ struct sk_buff *skb)
{
const struct net_offload **offloads;
const struct net_offload *ops;
@@ -260,7 +279,7 @@ static struct sk_buff **gue_gro_receive(struct sk_buff **head,
void *data;
u16 doffset = 0;
int flush = 1;
- struct fou *fou = container_of(uoff, struct fou, udp_offloads);
+ struct fou *fou = fou_from_sock(sk);
struct gro_remcsum grc;
skb_gro_remcsum_init(&grc);
@@ -343,6 +362,17 @@ static struct sk_buff **gue_gro_receive(struct sk_buff **head,
}
}
+ /* We can clear the encap_mark for GUE as we are essentially doing
+ * one of two possible things. We are either adding an L4 tunnel
+ * header to the outer L3 tunnel header, or we are are simply
+ * treating the GRE tunnel header as though it is a UDP protocol
+ * specific header such as VXLAN or GENEVE.
+ */
+ NAPI_GRO_CB(skb)->encap_mark = 0;
+
+ /* Flag this frame as already having an outer encap header */
+ NAPI_GRO_CB(skb)->is_fou = 1;
+
rcu_read_lock();
offloads = NAPI_GRO_CB(skb)->is_ipv6 ? inet6_offloads : inet_offloads;
ops = rcu_dereference(offloads[guehdr->proto_ctype]);
@@ -361,8 +391,7 @@ out:
return pp;
}
-static int gue_gro_complete(struct sk_buff *skb, int nhoff,
- struct udp_offload *uoff)
+static int gue_gro_complete(struct sock *sk, struct sk_buff *skb, int nhoff)
{
const struct net_offload **offloads;
struct guehdr *guehdr = (struct guehdr *)(skb->data + nhoff);
@@ -410,10 +439,7 @@ static int fou_add_to_port_list(struct net *net, struct fou *fou)
static void fou_release(struct fou *fou)
{
struct socket *sock = fou->sock;
- struct sock *sk = sock->sk;
- if (sk->sk_family == AF_INET)
- udp_del_offload(&fou->udp_offloads);
list_del(&fou->list);
udp_tunnel_sock_release(sock);
@@ -423,11 +449,9 @@ static void fou_release(struct fou *fou)
static int fou_encap_init(struct sock *sk, struct fou *fou, struct fou_cfg *cfg)
{
udp_sk(sk)->encap_rcv = fou_udp_recv;
- fou->protocol = cfg->protocol;
- fou->udp_offloads.callbacks.gro_receive = fou_gro_receive;
- fou->udp_offloads.callbacks.gro_complete = fou_gro_complete;
- fou->udp_offloads.port = cfg->udp_config.local_udp_port;
- fou->udp_offloads.ipproto = cfg->protocol;
+ udp_sk(sk)->gro_receive = fou_gro_receive;
+ udp_sk(sk)->gro_complete = fou_gro_complete;
+ fou_from_sock(sk)->protocol = cfg->protocol;
return 0;
}
@@ -435,9 +459,8 @@ static int fou_encap_init(struct sock *sk, struct fou *fou, struct fou_cfg *cfg)
static int gue_encap_init(struct sock *sk, struct fou *fou, struct fou_cfg *cfg)
{
udp_sk(sk)->encap_rcv = gue_udp_recv;
- fou->udp_offloads.callbacks.gro_receive = gue_gro_receive;
- fou->udp_offloads.callbacks.gro_complete = gue_gro_complete;
- fou->udp_offloads.port = cfg->udp_config.local_udp_port;
+ udp_sk(sk)->gro_receive = gue_gro_receive;
+ udp_sk(sk)->gro_complete = gue_gro_complete;
return 0;
}
@@ -496,12 +519,6 @@ static int fou_create(struct net *net, struct fou_cfg *cfg,
sk->sk_allocation = GFP_ATOMIC;
- if (cfg->udp_config.family == AF_INET) {
- err = udp_add_offload(net, &fou->udp_offloads);
- if (err)
- goto error;
- }
-
err = fou_add_to_port_list(net, fou);
if (err)
goto error;
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-29 02:16:54 +0000