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-rw-r--r--net/mptcp/protocol.h70
1 files changed, 48 insertions, 22 deletions
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 07c5ac37d..3e50baba1 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -13,6 +13,8 @@
#include <uapi/linux/mptcp.h>
#include <net/genetlink.h>
+#include "mptcp_pm_gen.h"
+
#define MPTCP_SUPPORTED_VERSION 1
/* MPTCP option bits */
@@ -268,6 +270,7 @@ struct mptcp_sock {
atomic64_t rcv_wnd_sent;
u64 rcv_data_fin_seq;
u64 bytes_retrans;
+ u64 bytes_consumed;
int rmem_fwd_alloc;
int snd_burst;
int old_wspace;
@@ -283,7 +286,6 @@ struct mptcp_sock {
int rmem_released;
unsigned long flags;
unsigned long cb_flags;
- unsigned long push_pending;
bool recovery; /* closing subflow write queue reinjected */
bool can_ack;
bool fully_established;
@@ -302,7 +304,8 @@ struct mptcp_sock {
nodelay:1,
fastopening:1,
in_accept_queue:1,
- free_first:1;
+ free_first:1,
+ rcvspace_init:1;
struct work_struct work;
struct sk_buff *ooo_last_skb;
struct rb_root out_of_order_queue;
@@ -436,11 +439,6 @@ mptcp_subflow_rsk(const struct request_sock *rsk)
return (struct mptcp_subflow_request_sock *)rsk;
}
-enum mptcp_data_avail {
- MPTCP_SUBFLOW_NODATA,
- MPTCP_SUBFLOW_DATA_AVAIL,
-};
-
struct mptcp_delegated_action {
struct napi_struct napi;
struct list_head head;
@@ -493,11 +491,10 @@ struct mptcp_subflow_context {
remote_key_valid : 1, /* received the peer key from */
disposable : 1, /* ctx can be free at ulp release time */
stale : 1, /* unable to snd/rcv data, do not use for xmit */
- local_id_valid : 1, /* local_id is correctly initialized */
valid_csum_seen : 1, /* at least one csum validated */
is_mptfo : 1, /* subflow is doing TFO */
- __unused : 9;
- enum mptcp_data_avail data_avail;
+ __unused : 10;
+ bool data_avail;
bool scheduled;
u32 remote_nonce;
u64 thmac;
@@ -507,7 +504,7 @@ struct mptcp_subflow_context {
u8 hmac[MPTCPOPT_HMAC_LEN]; /* MPJ subflow only */
u64 iasn; /* initial ack sequence number, MPC subflows only */
};
- u8 local_id;
+ s16 local_id; /* if negative not initialized yet */
u8 remote_id;
u8 reset_seen:1;
u8 reset_transient:1;
@@ -558,6 +555,7 @@ mptcp_subflow_ctx_reset(struct mptcp_subflow_context *subflow)
{
memset(&subflow->reset, 0, sizeof(subflow->reset));
subflow->request_mptcp = 1;
+ WRITE_ONCE(subflow->local_id, -1);
}
static inline u64
@@ -621,10 +619,12 @@ unsigned int mptcp_get_add_addr_timeout(const struct net *net);
int mptcp_is_checksum_enabled(const struct net *net);
int mptcp_allow_join_id0(const struct net *net);
unsigned int mptcp_stale_loss_cnt(const struct net *net);
+unsigned int mptcp_close_timeout(const struct sock *sk);
int mptcp_get_pm_type(const struct net *net);
const char *mptcp_get_scheduler(const struct net *net);
-void mptcp_subflow_fully_established(struct mptcp_subflow_context *subflow,
- const struct mptcp_options_received *mp_opt);
+void __mptcp_subflow_fully_established(struct mptcp_sock *msk,
+ struct mptcp_subflow_context *subflow,
+ const struct mptcp_options_received *mp_opt);
bool __mptcp_retransmit_pending_data(struct sock *sk);
void mptcp_check_and_set_pending(struct sock *sk);
void __mptcp_push_pending(struct sock *sk, unsigned int flags);
@@ -642,6 +642,7 @@ bool __mptcp_close(struct sock *sk, long timeout);
void mptcp_cancel_work(struct sock *sk);
void __mptcp_unaccepted_force_close(struct sock *sk);
void mptcp_set_owner_r(struct sk_buff *skb, struct sock *sk);
+void mptcp_set_state(struct sock *sk, int state);
bool mptcp_addresses_equal(const struct mptcp_addr_info *a,
const struct mptcp_addr_info *b, bool use_port);
@@ -669,6 +670,24 @@ struct sock *mptcp_subflow_get_retrans(struct mptcp_sock *msk);
int mptcp_sched_get_send(struct mptcp_sock *msk);
int mptcp_sched_get_retrans(struct mptcp_sock *msk);
+static inline u64 mptcp_data_avail(const struct mptcp_sock *msk)
+{
+ return READ_ONCE(msk->bytes_received) - READ_ONCE(msk->bytes_consumed);
+}
+
+static inline bool mptcp_epollin_ready(const struct sock *sk)
+{
+ /* mptcp doesn't have to deal with small skbs in the receive queue,
+ * at it can always coalesce them
+ */
+ return (mptcp_data_avail(mptcp_sk(sk)) >= sk->sk_rcvlowat) ||
+ (mem_cgroup_sockets_enabled && sk->sk_memcg &&
+ mem_cgroup_under_socket_pressure(sk->sk_memcg)) ||
+ READ_ONCE(tcp_memory_pressure);
+}
+
+int mptcp_set_rcvlowat(struct sock *sk, int val);
+
static inline bool __tcp_can_send(const struct sock *ssk)
{
/* only send if our side has not closed yet */
@@ -743,6 +762,7 @@ static inline bool mptcp_is_fully_established(struct sock *sk)
return inet_sk_state_load(sk) == TCP_ESTABLISHED &&
READ_ONCE(mptcp_sk(sk)->fully_established);
}
+
void mptcp_rcv_space_init(struct mptcp_sock *msk, const struct sock *ssk);
void mptcp_data_ready(struct sock *sk, struct sock *ssk);
bool mptcp_finish_join(struct sock *sk);
@@ -873,7 +893,7 @@ bool mptcp_pm_allow_new_subflow(struct mptcp_sock *msk);
void mptcp_pm_connection_closed(struct mptcp_sock *msk);
void mptcp_pm_subflow_established(struct mptcp_sock *msk);
bool mptcp_pm_nl_check_work_pending(struct mptcp_sock *msk);
-void mptcp_pm_subflow_check_next(struct mptcp_sock *msk, const struct sock *ssk,
+void mptcp_pm_subflow_check_next(struct mptcp_sock *msk,
const struct mptcp_subflow_context *subflow);
void mptcp_pm_add_addr_received(const struct sock *ssk,
const struct mptcp_addr_info *addr);
@@ -924,10 +944,6 @@ void mptcp_pm_remove_addrs_and_subflows(struct mptcp_sock *msk,
struct list_head *rm_list);
void mptcp_free_local_addr_list(struct mptcp_sock *msk);
-int mptcp_nl_cmd_announce(struct sk_buff *skb, struct genl_info *info);
-int mptcp_nl_cmd_remove(struct sk_buff *skb, struct genl_info *info);
-int mptcp_nl_cmd_sf_create(struct sk_buff *skb, struct genl_info *info);
-int mptcp_nl_cmd_sf_destroy(struct sk_buff *skb, struct genl_info *info);
void mptcp_event(enum mptcp_event_type type, const struct mptcp_sock *msk,
const struct sock *ssk, gfp_t gfp);
@@ -937,8 +953,8 @@ void mptcp_event_pm_listener(const struct sock *ssk,
enum mptcp_event_type event);
bool mptcp_userspace_pm_active(const struct mptcp_sock *msk);
-void mptcp_fastopen_gen_msk_ackseq(struct mptcp_sock *msk, struct mptcp_subflow_context *subflow,
- const struct mptcp_options_received *mp_opt);
+void __mptcp_fastopen_gen_msk_ackseq(struct mptcp_sock *msk, struct mptcp_subflow_context *subflow,
+ const struct mptcp_options_received *mp_opt);
void mptcp_fastopen_subflow_synack_set_params(struct mptcp_subflow_context *subflow,
struct request_sock *req);
@@ -1006,6 +1022,15 @@ int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc);
int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
+static inline u8 subflow_get_local_id(const struct mptcp_subflow_context *subflow)
+{
+ int local_id = READ_ONCE(subflow->local_id);
+
+ if (local_id < 0)
+ return 0;
+ return local_id;
+}
+
void __init mptcp_pm_nl_init(void);
void mptcp_pm_nl_work(struct mptcp_sock *msk);
void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk,
@@ -1054,7 +1079,7 @@ static inline bool mptcp_check_fallback(const struct sock *sk)
static inline void __mptcp_do_fallback(struct mptcp_sock *msk)
{
- if (test_bit(MPTCP_FALLBACK_DONE, &msk->flags)) {
+ if (__mptcp_check_fallback(msk)) {
pr_debug("TCP fallback already done (msk=%p)", msk);
return;
}
@@ -1104,7 +1129,8 @@ static inline bool subflow_simultaneous_connect(struct sock *sk)
{
struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk);
- return (1 << sk->sk_state) & (TCPF_ESTABLISHED | TCPF_FIN_WAIT1) &&
+ return (1 << sk->sk_state) &
+ (TCPF_ESTABLISHED | TCPF_FIN_WAIT1 | TCPF_FIN_WAIT2 | TCPF_CLOSING) &&
is_active_ssk(subflow) &&
!subflow->conn_finished;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-26 13:32:38 +0000