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-rw-r--r--net/ipv4/af_inet.c26
-rw-r--r--net/ipv4/fib_frontend.c16
-rw-r--r--net/ipv4/fou.c13
-rw-r--r--net/ipv4/gre_offload.c6
-rw-r--r--net/ipv4/ip_tunnel_core.c3
-rw-r--r--net/ipv4/udp.c12
-rw-r--r--net/ipv4/udp_offload.c7
7 files changed, 61 insertions, 22 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 0cc923f83e10..9e481992dbae 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1380,6 +1380,19 @@ out:
return pp;
}
+static struct sk_buff **ipip_gro_receive(struct sk_buff **head,
+ struct sk_buff *skb)
+{
+ if (NAPI_GRO_CB(skb)->encap_mark) {
+ NAPI_GRO_CB(skb)->flush = 1;
+ return NULL;
+ }
+
+ NAPI_GRO_CB(skb)->encap_mark = 1;
+
+ return inet_gro_receive(head, skb);
+}
+
#define SECONDS_PER_DAY 86400
/* inet_current_timestamp - Return IP network timestamp
@@ -1402,7 +1415,7 @@ __be32 inet_current_timestamp(void)
msecs += (u32)ts.tv_nsec / NSEC_PER_MSEC;
/* Convert to network byte order. */
- return htons(msecs);
+ return htonl(msecs);
}
EXPORT_SYMBOL(inet_current_timestamp);
@@ -1448,6 +1461,13 @@ out_unlock:
return err;
}
+static int ipip_gro_complete(struct sk_buff *skb, int nhoff)
+{
+ skb->encapsulation = 1;
+ skb_shinfo(skb)->gso_type |= SKB_GSO_IPIP;
+ return inet_gro_complete(skb, nhoff);
+}
+
int inet_ctl_sock_create(struct sock **sk, unsigned short family,
unsigned short type, unsigned char protocol,
struct net *net)
@@ -1675,8 +1695,8 @@ static struct packet_offload ip_packet_offload __read_mostly = {
static const struct net_offload ipip_offload = {
.callbacks = {
.gso_segment = inet_gso_segment,
- .gro_receive = inet_gro_receive,
- .gro_complete = inet_gro_complete,
+ .gro_receive = ipip_gro_receive,
+ .gro_complete = ipip_gro_complete,
},
};
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 21add552e56a..8a9246deccfe 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -280,7 +280,6 @@ __be32 fib_compute_spec_dst(struct sk_buff *skb)
struct in_device *in_dev;
struct fib_result res;
struct rtable *rt;
- struct flowi4 fl4;
struct net *net;
int scope;
@@ -296,14 +295,13 @@ __be32 fib_compute_spec_dst(struct sk_buff *skb)
scope = RT_SCOPE_UNIVERSE;
if (!ipv4_is_zeronet(ip_hdr(skb)->saddr)) {
- fl4.flowi4_oif = 0;
- fl4.flowi4_iif = LOOPBACK_IFINDEX;
- fl4.daddr = ip_hdr(skb)->saddr;
- fl4.saddr = 0;
- fl4.flowi4_tos = RT_TOS(ip_hdr(skb)->tos);
- fl4.flowi4_scope = scope;
- fl4.flowi4_mark = IN_DEV_SRC_VMARK(in_dev) ? skb->mark : 0;
- fl4.flowi4_tun_key.tun_id = 0;
+ struct flowi4 fl4 = {
+ .flowi4_iif = LOOPBACK_IFINDEX,
+ .daddr = ip_hdr(skb)->saddr,
+ .flowi4_tos = RT_TOS(ip_hdr(skb)->tos),
+ .flowi4_scope = scope,
+ .flowi4_mark = IN_DEV_SRC_VMARK(in_dev) ? skb->mark : 0,
+ };
if (!fib_lookup(net, &fl4, &res, 0))
return FIB_RES_PREFSRC(net, res);
} else {
diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c
index 780484243e14..a0586b4a197d 100644
--- a/net/ipv4/fou.c
+++ b/net/ipv4/fou.c
@@ -48,7 +48,7 @@ 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 +59,7 @@ 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 +69,14 @@ 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 +176,9 @@ 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:
diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
index 540866dbd27d..c47539d04b88 100644
--- a/net/ipv4/gre_offload.c
+++ b/net/ipv4/gre_offload.c
@@ -49,6 +49,7 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
/* setup inner skb. */
skb->encapsulation = 0;
+ SKB_GSO_CB(skb)->encap_level = 0;
__skb_pull(skb, tnl_hlen);
skb_reset_mac_header(skb);
skb_set_network_header(skb, skb_inner_network_offset(skb));
@@ -126,6 +127,11 @@ static struct sk_buff **gre_gro_receive(struct sk_buff **head,
struct packet_offload *ptype;
__be16 type;
+ if (NAPI_GRO_CB(skb)->encap_mark)
+ goto out;
+
+ NAPI_GRO_CB(skb)->encap_mark = 1;
+
off = skb_gro_offset(skb);
hlen = off + sizeof(*greh);
greh = skb_gro_header_fast(skb, off);
diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c
index d27276f6f8dd..02dd990af542 100644
--- a/net/ipv4/ip_tunnel_core.c
+++ b/net/ipv4/ip_tunnel_core.c
@@ -114,7 +114,8 @@ int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto,
skb->vlan_tci = 0;
skb_set_queue_mapping(skb, 0);
skb_scrub_packet(skb, xnet);
- return 0;
+
+ return iptunnel_pull_offloads(skb);
}
EXPORT_SYMBOL_GPL(iptunnel_pull_header);
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 836abe58a9c5..08eed5e16df0 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2070,10 +2070,14 @@ void udp_v4_early_demux(struct sk_buff *skb)
if (!in_dev)
return;
- ours = ip_check_mc_rcu(in_dev, iph->daddr, iph->saddr,
- iph->protocol);
- if (!ours)
- return;
+ /* we are supposed to accept bcast packets */
+ if (skb->pkt_type == PACKET_MULTICAST) {
+ ours = ip_check_mc_rcu(in_dev, iph->daddr, iph->saddr,
+ iph->protocol);
+ if (!ours)
+ return;
+ }
+
sk = __udp4_lib_mcast_demux_lookup(net, uh->dest, iph->daddr,
uh->source, iph->saddr, dif);
} else if (skb->pkt_type == PACKET_HOST) {
diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c
index 8a3405a80260..0ed2dafb7cc4 100644
--- a/net/ipv4/udp_offload.c
+++ b/net/ipv4/udp_offload.c
@@ -56,6 +56,7 @@ static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb,
/* setup inner skb. */
skb->encapsulation = 0;
+ SKB_GSO_CB(skb)->encap_level = 0;
__skb_pull(skb, tnl_hlen);
skb_reset_mac_header(skb);
skb_set_network_header(skb, skb_inner_network_offset(skb));
@@ -311,14 +312,14 @@ struct sk_buff **udp_gro_receive(struct sk_buff **head, struct sk_buff *skb,
unsigned int off = skb_gro_offset(skb);
int flush = 1;
- if (NAPI_GRO_CB(skb)->udp_mark ||
+ if (NAPI_GRO_CB(skb)->encap_mark ||
(skb->ip_summed != CHECKSUM_PARTIAL &&
NAPI_GRO_CB(skb)->csum_cnt == 0 &&
!NAPI_GRO_CB(skb)->csum_valid))
goto out;
- /* mark that this skb passed once through the udp gro layer */
- NAPI_GRO_CB(skb)->udp_mark = 1;
+ /* mark that this skb passed once through the tunnel gro layer */
+ NAPI_GRO_CB(skb)->encap_mark = 1;
rcu_read_lock();
uo_priv = rcu_dereference(udp_offload_base);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.