diff options
| -rw-r--r-- | include/net/gro.h | 43 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 8 | ||||
| -rw-r--r-- | net/ipv4/udp_offload.c | 7 | ||||
| -rw-r--r-- | net/ipv6/udp.c | 8 | ||||
| -rw-r--r-- | net/ipv6/udp_offload.c | 7 |
5 files changed, 65 insertions, 8 deletions
diff --git a/include/net/gro.h b/include/net/gro.h index 75efa6fb8441..88644b3ca660 100644 --- a/include/net/gro.h +++ b/include/net/gro.h @@ -452,6 +452,49 @@ static inline void gro_normal_one(struct napi_struct *napi, struct sk_buff *skb, gro_normal_list(napi); } +/* This function is the alternative of 'inet_iif' and 'inet_sdif' + * functions in case we can not rely on fields of IPCB. + * + * The caller must verify skb_valid_dst(skb) is false and skb->dev is initialized. + * The caller must hold the RCU read lock. + */ +static inline void inet_get_iif_sdif(const struct sk_buff *skb, int *iif, int *sdif) +{ + *iif = inet_iif(skb) ?: skb->dev->ifindex; + *sdif = 0; + +#if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV) + if (netif_is_l3_slave(skb->dev)) { + struct net_device *master = netdev_master_upper_dev_get_rcu(skb->dev); + + *sdif = *iif; + *iif = master ? master->ifindex : 0; + } +#endif +} + +/* This function is the alternative of 'inet6_iif' and 'inet6_sdif' + * functions in case we can not rely on fields of IP6CB. + * + * The caller must verify skb_valid_dst(skb) is false and skb->dev is initialized. + * The caller must hold the RCU read lock. + */ +static inline void inet6_get_iif_sdif(const struct sk_buff *skb, int *iif, int *sdif) +{ + /* using skb->dev->ifindex because skb_dst(skb) is not initialized */ + *iif = skb->dev->ifindex; + *sdif = 0; + +#if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV) + if (netif_is_l3_slave(skb->dev)) { + struct net_device *master = netdev_master_upper_dev_get_rcu(skb->dev); + + *sdif = *iif; + *iif = master ? master->ifindex : 0; + } +#endif +} + extern struct list_head offload_base; #endif /* _NET_IPV6_GRO_H */ diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 42a96b3547c9..abfa860367aa 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -114,6 +114,7 @@ #include <net/sock_reuseport.h> #include <net/addrconf.h> #include <net/udp_tunnel.h> +#include <net/gro.h> #if IS_ENABLED(CONFIG_IPV6) #include <net/ipv6_stubs.h> #endif @@ -555,10 +556,13 @@ struct sock *udp4_lib_lookup_skb(const struct sk_buff *skb, { const struct iphdr *iph = ip_hdr(skb); struct net *net = dev_net(skb->dev); + int iif, sdif; + + inet_get_iif_sdif(skb, &iif, &sdif); return __udp4_lib_lookup(net, iph->saddr, sport, - iph->daddr, dport, inet_iif(skb), - inet_sdif(skb), net->ipv4.udp_table, NULL); + iph->daddr, dport, iif, + sdif, net->ipv4.udp_table, NULL); } /* Must be called under rcu_read_lock(). diff --git a/net/ipv4/udp_offload.c b/net/ipv4/udp_offload.c index f402946da344..0f46b3c2e4ac 100644 --- a/net/ipv4/udp_offload.c +++ b/net/ipv4/udp_offload.c @@ -609,10 +609,13 @@ static struct sock *udp4_gro_lookup_skb(struct sk_buff *skb, __be16 sport, { const struct iphdr *iph = skb_gro_network_header(skb); struct net *net = dev_net(skb->dev); + int iif, sdif; + + inet_get_iif_sdif(skb, &iif, &sdif); return __udp4_lib_lookup(net, iph->saddr, sport, - iph->daddr, dport, inet_iif(skb), - inet_sdif(skb), net->ipv4.udp_table, NULL); + iph->daddr, dport, iif, + sdif, net->ipv4.udp_table, NULL); } INDIRECT_CALLABLE_SCOPE diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index b7c972aa09a7..e5da5d1cb215 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -51,6 +51,7 @@ #include <net/inet6_hashtables.h> #include <net/busy_poll.h> #include <net/sock_reuseport.h> +#include <net/gro.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> @@ -300,10 +301,13 @@ struct sock *udp6_lib_lookup_skb(const struct sk_buff *skb, { const struct ipv6hdr *iph = ipv6_hdr(skb); struct net *net = dev_net(skb->dev); + int iif, sdif; + + inet6_get_iif_sdif(skb, &iif, &sdif); return __udp6_lib_lookup(net, &iph->saddr, sport, - &iph->daddr, dport, inet6_iif(skb), - inet6_sdif(skb), net->ipv4.udp_table, NULL); + &iph->daddr, dport, iif, + sdif, net->ipv4.udp_table, NULL); } /* Must be called under rcu_read_lock(). diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c index 09fa7a42cb93..6b95ba241ebe 100644 --- a/net/ipv6/udp_offload.c +++ b/net/ipv6/udp_offload.c @@ -118,10 +118,13 @@ static struct sock *udp6_gro_lookup_skb(struct sk_buff *skb, __be16 sport, { const struct ipv6hdr *iph = skb_gro_network_header(skb); struct net *net = dev_net(skb->dev); + int iif, sdif; + + inet6_get_iif_sdif(skb, &iif, &sdif); return __udp6_lib_lookup(net, &iph->saddr, sport, - &iph->daddr, dport, inet6_iif(skb), - inet6_sdif(skb), net->ipv4.udp_table, NULL); + &iph->daddr, dport, iif, + sdif, net->ipv4.udp_table, NULL); } INDIRECT_CALLABLE_SCOPE |