diff options
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 63 |
1 files changed, 42 insertions, 21 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index c945fba4f543..14f6e9d19dc7 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -126,15 +126,21 @@ struct sock; struct proto; struct net; +typedef __u32 __bitwise __portpair; +typedef __u64 __bitwise __addrpair; + /** * struct sock_common - minimal network layer representation of sockets * @skc_daddr: Foreign IPv4 addr * @skc_rcv_saddr: Bound local IPv4 addr * @skc_hash: hash value used with various protocol lookup tables * @skc_u16hashes: two u16 hash values used by UDP lookup tables + * @skc_dport: placeholder for inet_dport/tw_dport + * @skc_num: placeholder for inet_num/tw_num * @skc_family: network address family * @skc_state: Connection state * @skc_reuse: %SO_REUSEADDR setting + * @skc_reuseport: %SO_REUSEPORT setting * @skc_bound_dev_if: bound device index if != 0 * @skc_bind_node: bind hash linkage for various protocol lookup tables * @skc_portaddr_node: second hash linkage for UDP/UDP-Lite protocol @@ -149,19 +155,33 @@ struct net; * for struct sock and struct inet_timewait_sock. */ struct sock_common { - /* skc_daddr and skc_rcv_saddr must be grouped : - * cf INET_MATCH() and INET_TW_MATCH() + /* skc_daddr and skc_rcv_saddr must be grouped on a 8 bytes aligned + * address on 64bit arches : cf INET_MATCH() and INET_TW_MATCH() */ - __be32 skc_daddr; - __be32 skc_rcv_saddr; - + union { + __addrpair skc_addrpair; + struct { + __be32 skc_daddr; + __be32 skc_rcv_saddr; + }; + }; union { unsigned int skc_hash; __u16 skc_u16hashes[2]; }; + /* skc_dport && skc_num must be grouped as well */ + union { + __portpair skc_portpair; + struct { + __be16 skc_dport; + __u16 skc_num; + }; + }; + unsigned short skc_family; volatile unsigned char skc_state; - unsigned char skc_reuse; + unsigned char skc_reuse:4; + unsigned char skc_reuseport:4; int skc_bound_dev_if; union { struct hlist_node skc_bind_node; @@ -213,7 +233,7 @@ struct cg_proto; * @sk_sndbuf: size of send buffer in bytes * @sk_flags: %SO_LINGER (l_onoff), %SO_BROADCAST, %SO_KEEPALIVE, * %SO_OOBINLINE settings, %SO_TIMESTAMPING settings - * @sk_no_check: %SO_NO_CHECK setting, wether or not checkup packets + * @sk_no_check: %SO_NO_CHECK setting, whether or not checkup packets * @sk_route_caps: route capabilities (e.g. %NETIF_F_TSO) * @sk_route_nocaps: forbidden route capabilities (e.g NETIF_F_GSO_MASK) * @sk_gso_type: GSO type (e.g. %SKB_GSO_TCPV4) @@ -279,6 +299,7 @@ struct sock { #define sk_family __sk_common.skc_family #define sk_state __sk_common.skc_state #define sk_reuse __sk_common.skc_reuse +#define sk_reuseport __sk_common.skc_reuseport #define sk_bound_dev_if __sk_common.skc_bound_dev_if #define sk_bind_node __sk_common.skc_bind_node #define sk_prot __sk_common.skc_prot @@ -319,7 +340,7 @@ struct sock { #endif unsigned long sk_flags; struct dst_entry *sk_rx_dst; - struct dst_entry *sk_dst_cache; + struct dst_entry __rcu *sk_dst_cache; spinlock_t sk_dst_lock; atomic_t sk_wmem_alloc; atomic_t sk_omem_alloc; @@ -349,7 +370,7 @@ struct sock { unsigned short sk_ack_backlog; unsigned short sk_max_ack_backlog; __u32 sk_priority; -#ifdef CONFIG_CGROUPS +#if IS_ENABLED(CONFIG_NETPRIO_CGROUP) __u32 sk_cgrp_prioidx; #endif struct pid *sk_peer_pid; @@ -585,24 +606,23 @@ static inline void sk_add_bind_node(struct sock *sk, hlist_add_head(&sk->sk_bind_node, list); } -#define sk_for_each(__sk, node, list) \ - hlist_for_each_entry(__sk, node, list, sk_node) -#define sk_for_each_rcu(__sk, node, list) \ - hlist_for_each_entry_rcu(__sk, node, list, sk_node) +#define sk_for_each(__sk, list) \ + hlist_for_each_entry(__sk, list, sk_node) +#define sk_for_each_rcu(__sk, list) \ + hlist_for_each_entry_rcu(__sk, list, sk_node) #define sk_nulls_for_each(__sk, node, list) \ hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node) #define sk_nulls_for_each_rcu(__sk, node, list) \ hlist_nulls_for_each_entry_rcu(__sk, node, list, sk_nulls_node) -#define sk_for_each_from(__sk, node) \ - if (__sk && ({ node = &(__sk)->sk_node; 1; })) \ - hlist_for_each_entry_from(__sk, node, sk_node) +#define sk_for_each_from(__sk) \ + hlist_for_each_entry_from(__sk, sk_node) #define sk_nulls_for_each_from(__sk, node) \ if (__sk && ({ node = &(__sk)->sk_nulls_node; 1; })) \ hlist_nulls_for_each_entry_from(__sk, node, sk_nulls_node) -#define sk_for_each_safe(__sk, node, tmp, list) \ - hlist_for_each_entry_safe(__sk, node, tmp, list, sk_node) -#define sk_for_each_bound(__sk, node, list) \ - hlist_for_each_entry(__sk, node, list, sk_bind_node) +#define sk_for_each_safe(__sk, tmp, list) \ + hlist_for_each_entry_safe(__sk, tmp, list, sk_node) +#define sk_for_each_bound(__sk, list) \ + hlist_for_each_entry(__sk, list, sk_bind_node) static inline struct user_namespace *sk_user_ns(struct sock *sk) { @@ -646,6 +666,7 @@ enum sock_flags { * Will use last 4 bytes of packet sent from * user-space instead. */ + SOCK_FILTER_LOCKED, /* Filter cannot be changed anymore */ }; static inline void sock_copy_flags(struct sock *nsk, struct sock *osk) @@ -1019,7 +1040,7 @@ static inline void sk_refcnt_debug_dec(struct sock *sk) sk->sk_prot->name, sk, atomic_read(&sk->sk_prot->socks)); } -inline void sk_refcnt_debug_release(const struct sock *sk) +static inline void sk_refcnt_debug_release(const struct sock *sk) { if (atomic_read(&sk->sk_refcnt) != 1) printk(KERN_DEBUG "Destruction of the %s socket %p delayed, refcnt=%d\n", |