diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/include/net/ip.h | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/include/net/ip.h')
-rw-r--r-- | kernel/include/net/ip.h | 91 |
1 files changed, 59 insertions, 32 deletions
diff --git a/kernel/include/net/ip.h b/kernel/include/net/ip.h index f41fc497b..1a98f1ca1 100644 --- a/kernel/include/net/ip.h +++ b/kernel/include/net/ip.h @@ -31,7 +31,7 @@ #include <net/route.h> #include <net/snmp.h> #include <net/flow.h> -#include <net/flow_keys.h> +#include <net/flow_dissector.h> struct sock; @@ -45,6 +45,7 @@ struct inet_skb_parm { #define IPSKB_FRAG_COMPLETE BIT(3) #define IPSKB_REROUTED BIT(4) #define IPSKB_DOREDIRECT BIT(5) +#define IPSKB_FRAG_PMTU BIT(6) u16 frag_max_size; }; @@ -99,25 +100,20 @@ int igmp_mc_init(void); * Functions provided by ip.c */ -int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk, +int ip_build_and_send_pkt(struct sk_buff *skb, const struct sock *sk, __be32 saddr, __be32 daddr, struct ip_options_rcu *opt); int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev); int ip_local_deliver(struct sk_buff *skb); int ip_mr_input(struct sk_buff *skb); -int ip_output(struct sock *sk, struct sk_buff *skb); -int ip_mc_output(struct sock *sk, struct sk_buff *skb); -int ip_fragment(struct sock *sk, struct sk_buff *skb, - int (*output)(struct sock *, struct sk_buff *)); -int ip_do_nat(struct sk_buff *skb); +int ip_output(struct net *net, struct sock *sk, struct sk_buff *skb); +int ip_mc_output(struct net *net, struct sock *sk, struct sk_buff *skb); +int ip_do_fragment(struct net *net, struct sock *sk, struct sk_buff *skb, + int (*output)(struct net *, struct sock *, struct sk_buff *)); void ip_send_check(struct iphdr *ip); -int __ip_local_out(struct sk_buff *skb); -int ip_local_out_sk(struct sock *sk, struct sk_buff *skb); -static inline int ip_local_out(struct sk_buff *skb) -{ - return ip_local_out_sk(skb->sk, skb); -} +int __ip_local_out(struct net *net, struct sock *sk, struct sk_buff *skb); +int ip_local_out(struct net *net, struct sock *sk, struct sk_buff *skb); int ip_queue_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl); void ip_init(void); @@ -202,10 +198,20 @@ void ip_send_unicast_reply(struct sock *sk, struct sk_buff *skb, #define NET_ADD_STATS_BH(net, field, adnd) SNMP_ADD_STATS_BH((net)->mib.net_statistics, field, adnd) #define NET_ADD_STATS_USER(net, field, adnd) SNMP_ADD_STATS_USER((net)->mib.net_statistics, field, adnd) +u64 snmp_get_cpu_field(void __percpu *mib, int cpu, int offct); unsigned long snmp_fold_field(void __percpu *mib, int offt); #if BITS_PER_LONG==32 +u64 snmp_get_cpu_field64(void __percpu *mib, int cpu, int offct, + size_t syncp_offset); u64 snmp_fold_field64(void __percpu *mib, int offt, size_t sync_off); #else +static inline u64 snmp_get_cpu_field64(void __percpu *mib, int cpu, int offct, + size_t syncp_offset) +{ + return snmp_get_cpu_field(mib, cpu, offct); + +} + static inline u64 snmp_fold_field64(void __percpu *mib, int offt, size_t syncp_off) { return snmp_fold_field(mib, offt); @@ -272,10 +278,12 @@ int ip_decrease_ttl(struct iphdr *iph) } static inline -int ip_dont_fragment(struct sock *sk, struct dst_entry *dst) +int ip_dont_fragment(const struct sock *sk, const struct dst_entry *dst) { - return inet_sk(sk)->pmtudisc == IP_PMTUDISC_DO || - (inet_sk(sk)->pmtudisc == IP_PMTUDISC_WANT && + u8 pmtudisc = READ_ONCE(inet_sk(sk)->pmtudisc); + + return pmtudisc == IP_PMTUDISC_DO || + (pmtudisc == IP_PMTUDISC_WANT && !(dst_metric_locked(dst, RTAX_MTU))); } @@ -311,12 +319,15 @@ static inline unsigned int ip_dst_mtu_maybe_forward(const struct dst_entry *dst, static inline unsigned int ip_skb_dst_mtu(const struct sk_buff *skb) { - if (!skb->sk || ip_sk_use_pmtu(skb->sk)) { + struct sock *sk = skb->sk; + + if (!sk || !sk_fullsock(sk) || ip_sk_use_pmtu(sk)) { bool forwarding = IPCB(skb)->flags & IPSKB_FORWARDED; + return ip_dst_mtu_maybe_forward(skb_dst(skb), forwarding); - } else { - return min(skb_dst(skb)->dev->mtu, IP_MAX_MTU); } + + return min(skb_dst(skb)->dev->mtu, IP_MAX_MTU); } u32 ip_idents_reserve(u32 hash, int segs); @@ -356,17 +367,18 @@ static inline __wsum inet_compute_pseudo(struct sk_buff *skb, int proto) skb->len, proto, 0); } -static inline void inet_set_txhash(struct sock *sk) +/* copy IPv4 saddr & daddr to flow_keys, possibly using 64bit load/store + * Equivalent to : flow->v4addrs.src = iph->saddr; + * flow->v4addrs.dst = iph->daddr; + */ +static inline void iph_to_flow_copy_v4addrs(struct flow_keys *flow, + const struct iphdr *iph) { - struct inet_sock *inet = inet_sk(sk); - struct flow_keys keys; - - keys.src = inet->inet_saddr; - keys.dst = inet->inet_daddr; - keys.port16[0] = inet->inet_sport; - keys.port16[1] = inet->inet_dport; - - sk->sk_txhash = flow_hash_from_keys(&keys); + BUILD_BUG_ON(offsetof(typeof(flow->addrs), v4addrs.dst) != + offsetof(typeof(flow->addrs), v4addrs.src) + + sizeof(flow->addrs.v4addrs.src)); + memcpy(&flow->addrs.v4addrs, &iph->saddr, sizeof(flow->addrs.v4addrs)); + flow->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS; } static inline __wsum inet_gro_compute_pseudo(struct sk_buff *skb, int proto) @@ -457,6 +469,11 @@ static __inline__ void inet_reset_saddr(struct sock *sk) #endif +static inline unsigned int ipv4_addr_hash(__be32 ip) +{ + return (__force unsigned int) ip; +} + bool ip_call_ra_chain(struct sk_buff *skb); /* @@ -479,11 +496,21 @@ enum ip_defrag_users { IP_DEFRAG_MACVLAN, }; -int ip_defrag(struct sk_buff *skb, u32 user); +/* Return true if the value of 'user' is between 'lower_bond' + * and 'upper_bond' inclusively. + */ +static inline bool ip_defrag_user_in_between(u32 user, + enum ip_defrag_users lower_bond, + enum ip_defrag_users upper_bond) +{ + return user >= lower_bond && user <= upper_bond; +} + +int ip_defrag(struct net *net, struct sk_buff *skb, u32 user); #ifdef CONFIG_INET -struct sk_buff *ip_check_defrag(struct sk_buff *skb, u32 user); +struct sk_buff *ip_check_defrag(struct net *net, struct sk_buff *skb, u32 user); #else -static inline struct sk_buff *ip_check_defrag(struct sk_buff *skb, u32 user) +static inline struct sk_buff *ip_check_defrag(struct net *net, struct sk_buff *skb, u32 user) { return skb; } |