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-rw-r--r--net/rxrpc/ar-internal.h50
-rw-r--r--net/rxrpc/call_accept.c126
-rw-r--r--net/rxrpc/call_event.c171
-rw-r--r--net/rxrpc/call_object.c56
-rw-r--r--net/rxrpc/conn_event.c60
-rw-r--r--net/rxrpc/conn_object.c93
-rw-r--r--net/rxrpc/input.c167
-rw-r--r--net/rxrpc/io_thread.c319
-rw-r--r--net/rxrpc/local_event.c43
-rw-r--r--net/rxrpc/local_object.c69
-rw-r--r--net/rxrpc/output.c92
-rw-r--r--net/rxrpc/peer_event.c29
-rw-r--r--net/rxrpc/recvmsg.c9
-rw-r--r--net/rxrpc/sendmsg.c10
14 files changed, 525 insertions, 769 deletions
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index c3c915a05627..6b993a3d4186 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -283,14 +283,11 @@ struct rxrpc_local {
struct rxrpc_net *rxnet; /* The network ns in which this resides */
struct hlist_node link;
struct socket *socket; /* my UDP socket */
- struct work_struct processor;
struct task_struct *io_thread;
struct list_head ack_tx_queue; /* List of ACKs that need sending */
spinlock_t ack_tx_lock; /* ACK list lock */
struct rxrpc_sock __rcu *service; /* Service(s) listening on this endpoint */
struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */
- struct sk_buff_head reject_queue; /* packets awaiting rejection */
- struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */
struct sk_buff_head rx_queue; /* Received packets */
struct list_head call_attend_q; /* Calls requiring immediate attention */
struct rb_root client_bundles; /* Client connection bundles by socket params */
@@ -524,23 +521,19 @@ enum rxrpc_call_flag {
RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */
RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */
RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */
- RXRPC_CALL_RX_UNDERRUN, /* Got data underrun */
RXRPC_CALL_DISCONNECTED, /* The call has been disconnected */
RXRPC_CALL_KERNEL, /* The call was made by the kernel */
RXRPC_CALL_UPGRADE, /* Service upgrade was requested for the call */
- RXRPC_CALL_DELAY_ACK_PENDING, /* DELAY ACK generation is pending */
- RXRPC_CALL_IDLE_ACK_PENDING, /* IDLE ACK generation is pending */
RXRPC_CALL_EXCLUSIVE, /* The call uses a once-only connection */
+ RXRPC_CALL_RX_IS_IDLE, /* Reception is idle - send an ACK */
};
/*
* Events that can be raised on a call.
*/
enum rxrpc_call_event {
- RXRPC_CALL_EV_ABORT, /* need to generate abort */
- RXRPC_CALL_EV_RESEND, /* Tx resend required */
- RXRPC_CALL_EV_EXPIRED, /* Expiry occurred */
RXRPC_CALL_EV_ACK_LOST, /* ACK may be lost, send ping */
+ RXRPC_CALL_EV_INITIAL_PING, /* Send initial ping for a new service call */
};
/*
@@ -611,7 +604,6 @@ struct rxrpc_call {
u32 next_rx_timo; /* Timeout for next Rx packet (jif) */
u32 next_req_timo; /* Timeout for next Rx request packet (jif) */
struct timer_list timer; /* Combined event timer */
- struct work_struct processor; /* Event processor */
struct work_struct destroyer; /* In-process-context destroyer */
rxrpc_notify_rx_t notify_rx; /* kernel service Rx notification function */
struct list_head link; /* link in master call list */
@@ -705,11 +697,7 @@ struct rxrpc_call {
rxrpc_seq_t acks_prev_seq; /* Highest previousPacket received */
rxrpc_seq_t acks_hard_ack; /* Latest hard-ack point */
rxrpc_seq_t acks_lowest_nak; /* Lowest NACK in the buffer (or ==tx_hard_ack) */
- rxrpc_seq_t acks_lost_top; /* tx_top at the time lost-ack ping sent */
- rxrpc_serial_t acks_lost_ping; /* Serial number of probe ACK */
rxrpc_serial_t acks_highest_serial; /* Highest serial number ACK'd */
- struct sk_buff *acks_soft_tbl; /* The last ACK packet with NAKs in it */
- spinlock_t acks_ack_lock; /* Access to ->acks_last_ack */
};
/*
@@ -822,10 +810,9 @@ extern struct workqueue_struct *rxrpc_workqueue;
*/
int rxrpc_service_prealloc(struct rxrpc_sock *, gfp_t);
void rxrpc_discard_prealloc(struct rxrpc_sock *);
-struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *,
- struct rxrpc_sock *,
- struct sockaddr_rxrpc *,
- struct sk_buff *);
+bool rxrpc_new_incoming_call(struct rxrpc_local *, struct rxrpc_peer *,
+ struct rxrpc_connection *, struct sockaddr_rxrpc *,
+ struct sk_buff *);
void rxrpc_accept_incoming_calls(struct rxrpc_local *);
int rxrpc_user_charge_accept(struct rxrpc_sock *, unsigned long);
@@ -838,13 +825,15 @@ void rxrpc_send_ACK(struct rxrpc_call *, u8, rxrpc_serial_t, enum rxrpc_propose_
void rxrpc_propose_delay_ACK(struct rxrpc_call *, rxrpc_serial_t,
enum rxrpc_propose_ack_trace);
void rxrpc_shrink_call_tx_buffer(struct rxrpc_call *);
-void rxrpc_process_call(struct work_struct *);
+void rxrpc_resend(struct rxrpc_call *call, struct sk_buff *ack_skb);
void rxrpc_reduce_call_timer(struct rxrpc_call *call,
unsigned long expire_at,
unsigned long now,
enum rxrpc_timer_trace why);
+void rxrpc_input_call_event(struct rxrpc_call *call, struct sk_buff *skb);
+
/*
* call_object.c
*/
@@ -864,9 +853,8 @@ void rxrpc_incoming_call(struct rxrpc_sock *, struct rxrpc_call *,
struct sk_buff *);
void rxrpc_release_call(struct rxrpc_sock *, struct rxrpc_call *);
void rxrpc_release_calls_on_socket(struct rxrpc_sock *);
-void rxrpc_queue_call(struct rxrpc_call *, enum rxrpc_call_trace);
void rxrpc_see_call(struct rxrpc_call *, enum rxrpc_call_trace);
-bool rxrpc_try_get_call(struct rxrpc_call *, enum rxrpc_call_trace);
+struct rxrpc_call *rxrpc_try_get_call(struct rxrpc_call *, enum rxrpc_call_trace);
void rxrpc_get_call(struct rxrpc_call *, enum rxrpc_call_trace);
void rxrpc_put_call(struct rxrpc_call *, enum rxrpc_call_trace);
void rxrpc_cleanup_call(struct rxrpc_call *);
@@ -908,6 +896,7 @@ void rxrpc_clean_up_local_conns(struct rxrpc_local *);
*/
void rxrpc_process_connection(struct work_struct *);
void rxrpc_process_delayed_final_acks(struct rxrpc_connection *, bool);
+int rxrpc_input_conn_packet(struct rxrpc_connection *conn, struct sk_buff *skb);
/*
* conn_object.c
@@ -916,10 +905,9 @@ extern unsigned int rxrpc_connection_expiry;
extern unsigned int rxrpc_closed_conn_expiry;
struct rxrpc_connection *rxrpc_alloc_connection(struct rxrpc_net *, gfp_t);
-struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *,
- struct sockaddr_rxrpc *,
- struct sk_buff *,
- struct rxrpc_peer **);
+struct rxrpc_connection *rxrpc_find_client_connection_rcu(struct rxrpc_local *,
+ struct sockaddr_rxrpc *,
+ struct sk_buff *);
void __rxrpc_disconnect_call(struct rxrpc_connection *, struct rxrpc_call *);
void rxrpc_disconnect_call(struct rxrpc_call *);
void rxrpc_kill_client_conn(struct rxrpc_connection *);
@@ -962,8 +950,8 @@ void rxrpc_unpublish_service_conn(struct rxrpc_connection *);
/*
* input.c
*/
-void rxrpc_input_call_event(struct rxrpc_call *, struct sk_buff *);
-void rxrpc_input_implicit_end_call(struct rxrpc_connection *, struct rxrpc_call *);
+void rxrpc_input_call_packet(struct rxrpc_call *, struct sk_buff *);
+void rxrpc_implicit_end_call(struct rxrpc_call *, struct sk_buff *);
/*
* io_thread.c
@@ -993,7 +981,9 @@ int rxrpc_get_server_data_key(struct rxrpc_connection *, const void *, time64_t,
/*
* local_event.c
*/
-extern void rxrpc_process_local_events(struct rxrpc_local *);
+void rxrpc_send_version_request(struct rxrpc_local *local,
+ struct rxrpc_host_header *hdr,
+ struct sk_buff *skb);
/*
* local_object.c
@@ -1004,7 +994,6 @@ struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *, enum rxrpc_local
void rxrpc_put_local(struct rxrpc_local *, enum rxrpc_local_trace);
struct rxrpc_local *rxrpc_use_local(struct rxrpc_local *, enum rxrpc_local_trace);
void rxrpc_unuse_local(struct rxrpc_local *, enum rxrpc_local_trace);
-void rxrpc_queue_local(struct rxrpc_local *);
void rxrpc_destroy_local(struct rxrpc_local *local);
void rxrpc_destroy_all_locals(struct rxrpc_net *);
@@ -1068,7 +1057,7 @@ static inline struct rxrpc_net *rxrpc_net(struct net *net)
void rxrpc_transmit_ack_packets(struct rxrpc_local *);
int rxrpc_send_abort_packet(struct rxrpc_call *);
int rxrpc_send_data_packet(struct rxrpc_call *, struct rxrpc_txbuf *);
-void rxrpc_reject_packets(struct rxrpc_local *);
+void rxrpc_reject_packet(struct rxrpc_local *local, struct sk_buff *skb);
void rxrpc_send_keepalive(struct rxrpc_peer *);
void rxrpc_transmit_one(struct rxrpc_call *call, struct rxrpc_txbuf *txb);
@@ -1178,7 +1167,6 @@ int rxrpc_server_keyring(struct rxrpc_sock *, sockptr_t, int);
* skbuff.c
*/
void rxrpc_kernel_data_consumed(struct rxrpc_call *, struct sk_buff *);
-void rxrpc_packet_destructor(struct sk_buff *);
void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace);
void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace);
void rxrpc_eaten_skb(struct sk_buff *, enum rxrpc_skb_trace);
diff --git a/net/rxrpc/call_accept.c b/net/rxrpc/call_accept.c
index 11134b7cec17..87b46c2a1985 100644
--- a/net/rxrpc/call_accept.c
+++ b/net/rxrpc/call_accept.c
@@ -100,6 +100,7 @@ static int rxrpc_service_prealloc_one(struct rxrpc_sock *rx,
return -ENOMEM;
call->flags |= (1 << RXRPC_CALL_IS_SERVICE);
call->state = RXRPC_CALL_SERVER_PREALLOC;
+ __set_bit(RXRPC_CALL_EV_INITIAL_PING, &call->events);
trace_rxrpc_call(call->debug_id, refcount_read(&call->ref),
user_call_ID, rxrpc_call_new_prealloc_service);
@@ -235,21 +236,6 @@ void rxrpc_discard_prealloc(struct rxrpc_sock *rx)
}
/*
- * Ping the other end to fill our RTT cache and to retrieve the rwind
- * and MTU parameters.
- */
-static void rxrpc_send_ping(struct rxrpc_call *call, struct sk_buff *skb)
-{
- struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
- ktime_t now = skb->tstamp;
-
- if (call->peer->rtt_count < 3 ||
- ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000), now))
- rxrpc_send_ACK(call, RXRPC_ACK_PING, sp->hdr.serial,
- rxrpc_propose_ack_ping_for_params);
-}
-
-/*
* Allocate a new incoming call from the prealloc pool, along with a connection
* and a peer as necessary.
*/
@@ -330,33 +316,56 @@ static struct rxrpc_call *rxrpc_alloc_incoming_call(struct rxrpc_sock *rx,
}
/*
- * Set up a new incoming call. Called in BH context with the RCU read lock
- * held.
+ * Set up a new incoming call. Called from the I/O thread.
*
* If this is for a kernel service, when we allocate the call, it will have
* three refs on it: (1) the kernel service, (2) the user_call_ID tree, (3) the
* retainer ref obtained from the backlog buffer. Prealloc calls for userspace
- * services only have the ref from the backlog buffer. We pass this ref to the
- * caller.
+ * services only have the ref from the backlog buffer.
*
* If we want to report an error, we mark the skb with the packet type and
- * abort code and return NULL.
- *
- * The call is returned with the user access mutex held and a ref on it.
+ * abort code and return false.
*/
-struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local,
- struct rxrpc_sock *rx,
- struct sockaddr_rxrpc *peer_srx,
- struct sk_buff *skb)
+bool rxrpc_new_incoming_call(struct rxrpc_local *local,
+ struct rxrpc_peer *peer,
+ struct rxrpc_connection *conn,
+ struct sockaddr_rxrpc *peer_srx,
+ struct sk_buff *skb)
{
- struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
const struct rxrpc_security *sec = NULL;
- struct rxrpc_connection *conn;
- struct rxrpc_peer *peer = NULL;
+ struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
struct rxrpc_call *call = NULL;
+ struct rxrpc_sock *rx;
_enter("");
+ /* Don't set up a call for anything other than the first DATA packet. */
+ if (sp->hdr.seq != 1 ||
+ sp->hdr.type != RXRPC_PACKET_TYPE_DATA)
+ return true; /* Just discard */
+
+ rcu_read_lock();
+
+ /* Weed out packets to services we're not offering. Packets that would
+ * begin a call are explicitly rejected and the rest are just
+ * discarded.
+ */
+ rx = rcu_dereference(local->service);
+ if (!rx || (sp->hdr.serviceId != rx->srx.srx_service &&
+ sp->hdr.serviceId != rx->second_service)
+ ) {
+ if (sp->hdr.type == RXRPC_PACKET_TYPE_DATA &&
+ sp->hdr.seq == 1)
+ goto unsupported_service;
+ goto discard;
+ }
+
+ if (!conn) {
+ sec = rxrpc_get_incoming_security(rx, skb);
+ if (!sec)
+ goto reject;
+ }
+
spin_lock(&rx->incoming_lock);
if (rx->sk.sk_state == RXRPC_SERVER_LISTEN_DISABLED ||
rx->sk.sk_state == RXRPC_CLOSE) {
@@ -367,19 +376,6 @@ struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local,
goto no_call;
}
- /* The peer, connection and call may all have sprung into existence due
- * to a duplicate packet being handled on another CPU in parallel, so
- * we have to recheck the routing. However, we're now holding
- * rx->incoming_lock, so the values should remain stable.
- */
- conn = rxrpc_find_connection_rcu(local, peer_srx, skb, &peer);
-
- if (!conn) {
- sec = rxrpc_get_incoming_security(rx, skb);
- if (!sec)
- goto no_call;
- }
-
call = rxrpc_alloc_incoming_call(rx, local, peer, conn, sec, peer_srx,
skb);
if (!call) {
@@ -398,35 +394,15 @@ struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local,
rx->notify_new_call(&rx->sk, call, call->user_call_ID);
spin_lock(&conn->state_lock);
- switch (conn->state) {
- case RXRPC_CONN_SERVICE_UNSECURED:
+ if (conn->state == RXRPC_CONN_SERVICE_UNSECURED) {
conn->state = RXRPC_CONN_SERVICE_CHALLENGING;
set_bit(RXRPC_CONN_EV_CHALLENGE, &call->conn->events);
rxrpc_queue_conn(call->conn, rxrpc_conn_queue_challenge);
- break;
-
- case RXRPC_CONN_SERVICE:
- write_lock(&call->state_lock);
- if (call->state < RXRPC_CALL_COMPLETE)
- call->state = RXRPC_CALL_SERVER_RECV_REQUEST;
- write_unlock(&call->state_lock);
- break;
-
- case RXRPC_CONN_REMOTELY_ABORTED:
- rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED,
- conn->abort_code, conn->error);
- break;
- case RXRPC_CONN_LOCALLY_ABORTED:
- rxrpc_abort_call("CON", call, sp->hdr.seq,
- conn->abort_code, conn->error);
- break;
- default:
- BUG();
}
spin_unlock(&conn->state_lock);
- spin_unlock(&rx->incoming_lock);
- rxrpc_send_ping(call, skb);
+ spin_unlock(&rx->incoming_lock);
+ rcu_read_unlock();
if (hlist_unhashed(&call->error_link)) {
spin_lock(&call->peer->lock);
@@ -435,12 +411,24 @@ struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local,
}
_leave(" = %p{%d}", call, call->debug_id);
- return call;
-
+ rxrpc_input_call_event(call, skb);
+ rxrpc_put_call(call, rxrpc_call_put_input);
+ return true;
+
+unsupported_service:
+ trace_rxrpc_abort(0, "INV", sp->hdr.cid, sp->hdr.callNumber, sp->hdr.seq,
+ RX_INVALID_OPERATION, EOPNOTSUPP);
+ skb->priority = RX_INVALID_OPERATION;
+ goto reject;
no_call:
spin_unlock(&rx->incoming_lock);
- _leave(" = NULL [%u]", skb->mark);
- return NULL;
+reject:
+ rcu_read_unlock();
+ _leave(" = f [%u]", skb->mark);
+ return false;
+discard:
+ rcu_read_unlock();
+ return true;
}
/*
diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c
index c9f835292f7b..9db62fa55c62 100644
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -74,11 +74,6 @@ void rxrpc_send_ACK(struct rxrpc_call *call, u8 ack_reason,
if (test_bit(RXRPC_CALL_DISCONNECTED, &call->flags))
return;
- if (ack_reason == RXRPC_ACK_DELAY &&
- test_and_set_bit(RXRPC_CALL_DELAY_ACK_PENDING, &call->flags)) {
- trace_rxrpc_drop_ack(call, why, ack_reason, serial, false);
- return;
- }
rxrpc_inc_stat(call->rxnet, stat_tx_acks[ack_reason]);
@@ -111,12 +106,7 @@ void rxrpc_send_ACK(struct rxrpc_call *call, u8 ack_reason,
spin_unlock_bh(&local->ack_tx_lock);
trace_rxrpc_send_ack(call, why, ack_reason, serial);
- if (!rcu_read_lock_held()) {
- rxrpc_transmit_ack_packets(call->peer->local);
- } else {
- rxrpc_get_local(local, rxrpc_local_get_queue);
- rxrpc_queue_local(local);
- }
+ rxrpc_wake_up_io_thread(local);
}
/*
@@ -130,11 +120,10 @@ static void rxrpc_congestion_timeout(struct rxrpc_call *call)
/*
* Perform retransmission of NAK'd and unack'd packets.
*/
-static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
+void rxrpc_resend(struct rxrpc_call *call, struct sk_buff *ack_skb)
{
struct rxrpc_ackpacket *ack = NULL;
struct rxrpc_txbuf *txb;
- struct sk_buff *ack_skb = NULL;
unsigned long resend_at;
rxrpc_seq_t transmitted = READ_ONCE(call->tx_transmitted);
ktime_t now, max_age, oldest, ack_ts;
@@ -148,32 +137,21 @@ static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
max_age = ktime_sub_us(now, jiffies_to_usecs(call->peer->rto_j));
oldest = now;
- /* See if there's an ACK saved with a soft-ACK table in it. */
- if (call->acks_soft_tbl) {
- spin_lock_bh(&call->acks_ack_lock);
- ack_skb = call->acks_soft_tbl;
- if (ack_skb) {
- rxrpc_get_skb(ack_skb, rxrpc_skb_get_ack);
- ack = (void *)ack_skb->data + sizeof(struct rxrpc_wire_header);
- }
- spin_unlock_bh(&call->acks_ack_lock);
- }
-
if (list_empty(&call->tx_buffer))
goto no_resend;
- spin_lock(&call->tx_lock);
-
if (list_empty(&call->tx_buffer))
goto no_further_resend;
- trace_rxrpc_resend(call);
+ trace_rxrpc_resend(call, ack_skb);
txb = list_first_entry(&call->tx_buffer, struct rxrpc_txbuf, call_link);
/* Scan the soft ACK table without dropping the lock and resend any
* explicitly NAK'd packets.
*/
- if (ack) {
+ if (ack_skb) {
+ ack = (void *)ack_skb->data + sizeof(struct rxrpc_wire_header);
+
for (i = 0; i < ack->nAcks; i++) {
rxrpc_seq_t seq;
@@ -197,7 +175,6 @@ static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
rxrpc_see_txbuf(txb, rxrpc_txbuf_see_unacked);
if (list_empty(&txb->tx_link)) {
- rxrpc_get_txbuf(txb, rxrpc_txbuf_get_retrans);
list_add_tail(&txb->tx_link, &retrans_queue);
set_bit(RXRPC_TXBUF_RESENT, &txb->flags);
}
@@ -241,7 +218,6 @@ static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
do_resend:
unacked = true;
if (list_empty(&txb->tx_link)) {
- rxrpc_get_txbuf(txb, rxrpc_txbuf_get_retrans);
list_add_tail(&txb->tx_link, &retrans_queue);
set_bit(RXRPC_TXBUF_RESENT, &txb->flags);
rxrpc_inc_stat(call->rxnet, stat_tx_data_retrans);
@@ -249,10 +225,7 @@ static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
}
no_further_resend:
- spin_unlock(&call->tx_lock);
no_resend:
- rxrpc_free_skb(ack_skb, rxrpc_skb_put_ack);
-
resend_at = nsecs_to_jiffies(ktime_to_ns(ktime_sub(now, oldest)));
resend_at += jiffies + rxrpc_get_rto_backoff(call->peer,
!list_empty(&retrans_queue));
@@ -266,7 +239,7 @@ no_resend:
* retransmitting data.
*/
if (list_empty(&retrans_queue)) {
- rxrpc_reduce_call_timer(call, resend_at, now_j,
+ rxrpc_reduce_call_timer(call, resend_at, jiffies,
rxrpc_timer_set_for_resend);
ack_ts = ktime_sub(now, call->acks_latest_ts);
if (ktime_to_us(ack_ts) < (call->peer->srtt_us >> 3))
@@ -276,15 +249,11 @@ no_resend:
goto out;
}
+ /* Retransmit the queue */
while ((txb = list_first_entry_or_null(&retrans_queue,
struct rxrpc_txbuf, tx_link))) {
list_del_init(&txb->tx_link);
- rxrpc_send_data_packet(call, txb);
- rxrpc_put_txbuf(txb, rxrpc_txbuf_put_trans);
-
- trace_rxrpc_retransmit(call, txb->seq,
- ktime_to_ns(ktime_sub(txb->last_sent,
- max_age)));
+ rxrpc_transmit_one(call, txb);
}
out:
@@ -358,15 +327,26 @@ static void rxrpc_transmit_some_data(struct rxrpc_call *call)
}
/*
+ * Ping the other end to fill our RTT cache and to retrieve the rwind
+ * and MTU parameters.
+ */
+static void rxrpc_send_initial_ping(struct rxrpc_call *call)
+{
+ if (call->peer->rtt_count < 3 ||
+ ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000),
+ ktime_get_real()))
+ rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
+ rxrpc_propose_ack_ping_for_params);
+}
+
+/*
* Handle retransmission and deferred ACK/abort generation.
*/
-void rxrpc_process_call(struct work_struct *work)
+void rxrpc_input_call_event(struct rxrpc_call *call, struct sk_buff *skb)
{
- struct rxrpc_call *call =
- container_of(work, struct rxrpc_call, processor);
unsigned long now, next, t;
- unsigned int iterations = 0;
rxrpc_serial_t ackr_serial;
+ bool resend = false, expired = false;
rxrpc_see_call(call, rxrpc_call_see_input);
@@ -374,47 +354,31 @@ void rxrpc_process_call(struct work_struct *work)
_enter("{%d,%s,%lx}",
call->debug_id, rxrpc_call_states[call->state], call->events);
-recheck_state:
- if (call->acks_hard_ack != call->tx_bottom)
- rxrpc_shrink_call_tx_buffer(call);
-
- /* Limit the number of times we do this before returning to the manager */
- if (!rxrpc_tx_window_has_space(call) ||
- list_empty(&call->tx_sendmsg)) {
- iterations++;
- if (iterations > 5)
- goto requeue;
- }
-
- if (test_and_clear_bit(RXRPC_CALL_EV_ABORT, &call->events)) {
- rxrpc_send_abort_packet(call);
- goto recheck_state;
- }
+ if (call->state == RXRPC_CALL_COMPLETE)
+ goto out;
- if (call->state == RXRPC_CALL_COMPLETE) {
- del_timer_sync(&call->timer);
+ if (skb && skb->mark == RXRPC_SKB_MARK_ERROR)
goto out;
- }
- /* Work out if any timeouts tripped */
+ /* If we see our async-event poke, check for timeout trippage. */
now = jiffies;
t = READ_ONCE(call->expect_rx_by);
if (time_after_eq(now, t)) {
trace_rxrpc_timer(call, rxrpc_timer_exp_normal, now);
- set_bit(RXRPC_CALL_EV_EXPIRED, &call->events);
+ expired = true;
}
t = READ_ONCE(call->expect_req_by);
if (call->state == RXRPC_CALL_SERVER_RECV_REQUEST &&
time_after_eq(now, t)) {
trace_rxrpc_timer(call, rxrpc_timer_exp_idle, now);
- set_bit(RXRPC_CALL_EV_EXPIRED, &call->events);
+ expired = true;
}
t = READ_ONCE(call->expect_term_by);
if (time_after_eq(now, t)) {
trace_rxrpc_timer(call, rxrpc_timer_exp_hard, now);
- set_bit(RXRPC_CALL_EV_EXPIRED, &call->events);
+ expired = true;
}
t = READ_ONCE(call->delay_ack_at);
@@ -453,13 +417,19 @@ recheck_state:
if (time_after_eq(now, t)) {
trace_rxrpc_timer(call, rxrpc_timer_exp_resend, now);
cmpxchg(&call->resend_at, t, now + MAX_JIFFY_OFFSET);
- set_bit(RXRPC_CALL_EV_RESEND, &call->events);
+ resend = true;
}
+ if (skb)
+ rxrpc_input_call_packet(call, skb);
+
rxrpc_transmit_some_data(call);
+ if (test_and_clear_bit(RXRPC_CALL_EV_INITIAL_PING, &call->events))
+ rxrpc_send_initial_ping(call);
+
/* Process events */
- if (test_and_clear_bit(RXRPC_CALL_EV_EXPIRED, &call->events)) {
+ if (expired) {
if (test_bit(RXRPC_CALL_RX_HEARD, &call->flags) &&
(int)call->conn->hi_serial - (int)call->rx_serial > 0) {
trace_rxrpc_call_reset(call);
@@ -467,51 +437,50 @@ recheck_state:
} else {
rxrpc_abort_call("EXP", call, 0, RX_CALL_TIMEOUT, -ETIME);
}
- set_bit(RXRPC_CALL_EV_ABORT, &call->events);
- goto recheck_state;
+ rxrpc_send_abort_packet(call);
+ goto out;
}
- if (test_and_clear_bit(RXRPC_CALL_EV_ACK_LOST, &call->events)) {
- call->acks_lost_top = call->tx_top;
+ if (test_and_clear_bit(RXRPC_CALL_EV_ACK_LOST, &call->events))
rxrpc_send_ACK(call, RXRPC_ACK_PING, 0,
rxrpc_propose_ack_ping_for_lost_ack);
- }
- if (test_and_clear_bit(RXRPC_CALL_EV_RESEND, &call->events) &&
- call->state != RXRPC_CALL_CLIENT_RECV_REPLY) {
- rxrpc_resend(call, now);
- goto recheck_state;
- }
+ if (resend && call->state != RXRPC_CALL_CLIENT_RECV_REPLY)
+ rxrpc_resend(call, NULL);
+
+ if (test_and_clear_bit(RXRPC_CALL_RX_IS_IDLE, &call->flags))
+ rxrpc_send_ACK(call, RXRPC_ACK_IDLE, 0,
+ rxrpc_propose_ack_rx_idle);
+
+ if (atomic_read(&call->ackr_nr_unacked) > 2)
+ rxrpc_send_ACK(call, RXRPC_ACK_IDLE, 0,
+ rxrpc_propose_ack_input_data);
/* Make sure the timer is restarted */
- next = call->expect_rx_by;
+ if (call->state != RXRPC_CALL_COMPLETE) {
+ next = call->expect_rx_by;
#define set(T) { t = READ_ONCE(T); if (time_before(t, next)) next = t; }
- set(call->expect_req_by);
- set(call->expect_term_by);
- set(call->delay_ack_at);
- set(call->ack_lost_at);
- set(call->resend_at);
- set(call->keepalive_at);
- set(call->ping_at);
-
- now = jiffies;
- if (time_after_eq(now, next))
- goto recheck_state;
+ set(call->expect_req_by);
+ set(call->expect_term_by);
+ set(call->delay_ack_at);
+ set(call->ack_lost_at);
+ set(call->resend_at);
+ set(call->keepalive_at);
+ set(call->ping_at);
- rxrpc_reduce_call_timer(call, next, now, rxrpc_timer_restart);
+ now = jiffies;
+ if (time_after_eq(now, next))
+ rxrpc_poke_call(call, rxrpc_call_poke_timer_now);
- /* other events may have been raised since we started checking */
- if (call->events)
- goto requeue;
+ rxrpc_reduce_call_timer(call, next, now, rxrpc_timer_restart);
+ }
out:
+ if (call->state == RXRPC_CALL_COMPLETE)
+ del_timer_sync(&call->timer);
+ if (call->acks_hard_ack != call->tx_bottom)
+ rxrpc_shrink_call_tx_buffer(call);
_leave("");
- return;
-
-requeue:
- if (call->state < RXRPC_CALL_COMPLETE)
- rxrpc_queue_call(call, rxrpc_call_queue_requeue);
- goto out;
}
diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
index 7570b4e67bc5..d441a715d988 100644
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -71,7 +71,7 @@ static void rxrpc_call_timer_expired(struct timer_list *t)
if (call->state < RXRPC_CALL_COMPLETE) {
trace_rxrpc_timer_expired(call, jiffies);
- rxrpc_queue_call(call, rxrpc_call_queue_timer);
+ rxrpc_poke_call(call, rxrpc_call_poke_timer);
}
}
@@ -148,7 +148,6 @@ struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *rx, gfp_t gfp,
&rxrpc_call_user_mutex_lock_class_key);
timer_setup(&call->timer, rxrpc_call_timer_expired, 0);
- INIT_WORK(&call->processor, rxrpc_process_call);
INIT_WORK(&call->destroyer, rxrpc_destroy_call);
INIT_LIST_HEAD(&call->link);
INIT_LIST_HEAD(&call->chan_wait_link);
@@ -163,7 +162,6 @@ struct rxrpc_call *rxrpc_alloc_call(struct rxrpc_sock *rx, gfp_t gfp,
init_waitqueue_head(&call->waitq);
spin_lock_init(&call->notify_lock);
spin_lock_init(&call->tx_lock);
- spin_lock_init(&call->acks_ack_lock);
rwlock_init(&call->state_lock);
refcount_set(&call->ref, 1);
call->debug_id = debug_id;
@@ -252,6 +250,7 @@ static void rxrpc_start_call_timer(struct rxrpc_call *call)
call->ack_lost_at = j;
call->resend_at = j;
call->ping_at = j;
+ call->keepalive_at = j;
call->expect_rx_by = j;
call->expect_req_by = j;
call->expect_term_by = j;
@@ -430,6 +429,29 @@ void rxrpc_incoming_call(struct rxrpc_sock *rx,
call->state = RXRPC_CALL_SERVER_SECURING;
call->cong_tstamp = skb->tstamp;
+ spin_lock(&conn->state_lock);
+
+ switch (conn->state) {
+ case RXRPC_CONN_SERVICE_UNSECURED:
+ case RXRPC_CONN_SERVICE_CHALLENGING:
+ call->state = RXRPC_CALL_SERVER_SECURING;
+ break;
+ case RXRPC_CONN_SERVICE:
+ call->state = RXRPC_CALL_SERVER_RECV_REQUEST;
+ break;
+
+ case RXRPC_CONN_REMOTELY_ABORTED:
+ __rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED,
+ conn->abort_code, conn->error);
+ break;
+ case RXRPC_CONN_LOCALLY_ABORTED:
+ __rxrpc_abort_call("CON", call, 1,
+ conn->abort_code, conn->error);
+ break;
+ default:
+ BUG();
+ }
+
/* Set the channel for this call. We don't get channel_lock as we're
* only defending against the data_ready handler (which we're called
* from) and the RESPONSE packet parser (which is only really
@@ -440,6 +462,7 @@ void rxrpc_incoming_call(struct rxrpc_sock *rx,
conn->channels[chan].call_counter = call->call_id;
conn->channels[chan].call_id = call->call_id;
rcu_assign_pointer(conn->channels[chan].call, call);
+ spin_unlock(&conn->state_lock);
spin_lock(&conn->peer->lock);
hlist_add_head(&call->error_link, &conn->peer->error_targets);
@@ -450,15 +473,6 @@ void rxrpc_incoming_call(struct rxrpc_sock *rx,
}
/*
- * Queue a call's work processor.
- */
-void rxrpc_queue_call(struct rxrpc_call *call, enum rxrpc_call_trace why)
-{
- if (rxrpc_queue_work(&call->processor))
- trace_rxrpc_call(call->debug_id, refcount_read(&call->ref), 0, why);
-}
-
-/*
* Note the re-emergence of a call.
*/
void rxrpc_see_call(struct rxrpc_call *call, enum rxrpc_call_trace why)
@@ -470,14 +484,15 @@ void rxrpc_see_call(struct rxrpc_call *call, enum rxrpc_call_trace why)
}
}
-bool rxrpc_try_get_call(struct rxrpc_call *call, enum rxrpc_call_trace why)
+struct rxrpc_call *rxrpc_try_get_call(struct rxrpc_call *call,
+ enum rxrpc_call_trace why)
{
int r;
- if (!__refcount_inc_not_zero(&call->ref, &r))
- return false;
+ if (!call || !__refcount_inc_not_zero(&call->ref, &r))
+ return NULL;
trace_rxrpc_call(call->debug_id, r + 1, 0, why);
- return true;
+ return call;
}
/*
@@ -638,8 +653,6 @@ static void rxrpc_destroy_call(struct work_struct *work)
struct rxrpc_txbuf *txb;
del_timer_sync(&call->timer);
- cancel_work_sync(&call->processor); /* The processor may restart the timer */
- del_timer_sync(&call->timer);
rxrpc_cleanup_ring(call);
while ((txb = list_first_entry_or_null(&call->tx_sendmsg,
@@ -652,8 +665,8 @@ static void rxrpc_destroy_call(struct work_struct *work)
list_del(&txb->call_link);
rxrpc_put_txbuf(txb, rxrpc_txbuf_put_cleaned);
}
+
rxrpc_put_txbuf(call->tx_pending, rxrpc_txbuf_put_cleaned);
- rxrpc_free_skb(call->acks_soft_tbl, rxrpc_skb_put_ack);
rxrpc_put_connection(call->conn, rxrpc_conn_put_call);
rxrpc_put_peer(call->peer, rxrpc_peer_put_call);
rxrpc_put_local(call->local, rxrpc_local_put_call);
@@ -670,10 +683,9 @@ void rxrpc_cleanup_call(struct rxrpc_call *call)
ASSERTCMP(call->state, ==, RXRPC_CALL_COMPLETE);
ASSERT(test_bit(RXRPC_CALL_RELEASED, &call->flags));
- del_timer_sync(&call->timer);
- cancel_work(&call->processor);
+ del_timer(&call->timer);
- if (rcu_read_lock_held() || work_busy(&call->processor))
+ if (rcu_read_lock_held())
/* Can't use the rxrpc workqueue as we need to cancel/flush
* something that may be running/waiting there.
*/
diff --git a/net/rxrpc/conn_event.c b/net/rxrpc/conn_event.c
index 23a74e35052d..643a56322224 100644
--- a/net/rxrpc/conn_event.c
+++ b/net/rxrpc/conn_event.c
@@ -479,3 +479,63 @@ void rxrpc_process_connection(struct work_struct *work)
rxrpc_unuse_local(conn->local, rxrpc_local_unuse_conn_work);
}
}
+
+/*
+ * post connection-level events to the connection
+ * - this includes challenges, responses, some aborts and call terminal packet
+ * retransmission.
+ */
+static void rxrpc_post_packet_to_conn(struct rxrpc_connection *conn,
+ struct sk_buff *skb)
+{
+ _enter("%p,%p", conn, skb);
+
+ rxrpc_get_skb(skb, rxrpc_skb_get_conn_work);
+ skb_queue_tail(&conn->rx_queue, skb);
+ rxrpc_queue_conn(conn, rxrpc_conn_queue_rx_work);
+}
+
+/*
+ * Input a connection-level packet.
+ */
+int rxrpc_input_conn_packet(struct rxrpc_connection *conn, struct sk_buff *skb)
+{
+ struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
+
+ if (conn->state >= RXRPC_CONN_REMOTELY_ABORTED) {
+ _leave(" = -ECONNABORTED [%u]", conn->state);
+ return -ECONNABORTED;
+ }
+
+ _enter("{%d},{%u,%%%u},", conn->debug_id, sp->hdr.type, sp->hdr.serial);
+
+ switch (sp->hdr.type) {
+ case RXRPC_PACKET_TYPE_DATA:
+ case RXRPC_PACKET_TYPE_ACK:
+ rxrpc_conn_retransmit_call(conn, skb,
+ sp->hdr.cid & RXRPC_CHANNELMASK);
+ return 0;
+
+ case RXRPC_PACKET_TYPE_BUSY:
+ /* Just ignore BUSY packets for now. */
+ return 0;
+
+ case RXRPC_PACKET_TYPE_ABORT:
+ conn->error = -ECONNABORTED;
+ conn->abort_code = skb->priority;
+ conn->state = RXRPC_CONN_REMOTELY_ABORTED;
+ set_bit(RXRPC_CONN_DONT_REUSE, &conn->flags);
+ rxrpc_abort_calls(conn, RXRPC_CALL_REMOTELY_ABORTED, sp->hdr.serial);
+ return -ECONNABORTED;
+
+ case RXRPC_PACKET_TYPE_CHALLENGE:
+ case RXRPC_PACKET_TYPE_RESPONSE:
+ rxrpc_post_packet_to_conn(conn, skb);
+ return 0;
+
+ default:
+ trace_rxrpc_rx_eproto(NULL, sp->hdr.serial,
+ tracepoint_string("bad_conn_pkt"));
+ return -EPROTO;
+ }
+}
diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c
index 98e49646ca1d..3c8f83dacb2b 100644
--- a/net/rxrpc/conn_object.c
+++ b/net/rxrpc/conn_object.c
@@ -72,76 +72,55 @@ struct rxrpc_connection *rxrpc_alloc_connection(struct rxrpc_net *rxnet,
*
* The caller must be holding the RCU read lock.
*/
-struct rxrpc_connection *rxrpc_find_connection_rcu(struct rxrpc_local *local,
- struct sockaddr_rxrpc *srx,
- struct sk_buff *skb,
- struct rxrpc_peer **_peer)
+struct rxrpc_connection *rxrpc_find_client_connection_rcu(struct rxrpc_local *local,
+ struct sockaddr_rxrpc *srx,
+ struct sk_buff *skb)
{
struct rxrpc_connection *conn;
- struct rxrpc_conn_proto k;
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
struct rxrpc_peer *peer;
_enter(",%x", sp->hdr.cid & RXRPC_CIDMASK);
- k.epoch = sp->hdr.epoch;
- k.cid = sp->hdr.cid & RXRPC_CIDMASK;
-
- if (rxrpc_to_server(sp)) {
- /* We need to look up service connections by the full protocol
- * parameter set. We look up the peer first as an intermediate
- * step and then the connection from the peer's tree.
- */
- peer = rxrpc_lookup_peer_rcu(local, srx);
- if (!peer)
- goto not_found;
- *_peer = peer;
- conn = rxrpc_find_service_conn_rcu(peer, skb);
- if (!conn || refcount_read(&conn->ref) == 0)
- goto not_found;
- _leave(" = %p", conn);
- return conn;
- } else {
- /* Look up client connections by connection ID alone as their
- * IDs are unique for this machine.
- */
- conn = idr_find(&rxrpc_client_conn_ids, sp->hdr.cid >> RXRPC_CIDSHIFT);
- if (!conn || refcount_read(&conn->ref) == 0) {
- _debug("no conn");
- goto not_found;
- }
+ /* Look up client connections by connection ID alone as their IDs are
+ * unique for this machine.
+ */
+ conn = idr_find(&rxrpc_client_conn_ids, sp->hdr.cid >> RXRPC_CIDSHIFT);
+ if (!conn || refcount_read(&conn->ref) == 0) {
+ _debug("no conn");
+ goto not_found;
+ }
- if (conn->proto.epoch != k.epoch ||
- conn->local != local)
+ if (conn->proto.epoch != sp->hdr.epoch ||
+ conn->local != local)
+ goto not_found;
+
+ peer = conn->peer;
+ switch (srx->transport.family) {
+ case AF_INET:
+ if (peer->srx.transport.sin.sin_port !=
+ srx->transport.sin.sin_port ||
+ peer->srx.transport.sin.sin_addr.s_addr !=
+ srx->transport.sin.sin_addr.s_addr)
goto not_found;
-
- peer = conn->peer;
- switch (srx->transport.family) {
- case AF_INET:
- if (peer->srx.transport.sin.sin_port !=
- srx->transport.sin.sin_port ||
- peer->srx.transport.sin.sin_addr.s_addr !=
- srx->transport.sin.sin_addr.s_addr)
- goto not_found;
- break;
+ break;
#ifdef CONFIG_AF_RXRPC_IPV6
- case AF_INET6:
- if (peer->srx.transport.sin6.sin6_port !=
- srx->transport.sin6.sin6_port ||
- memcmp(&peer->srx.transport.sin6.sin6_addr,
- &srx->transport.sin6.sin6_addr,
- sizeof(struct in6_addr)) != 0)
- goto not_found;
- break;
+ case AF_INET6:
+ if (peer->srx.transport.sin6.sin6_port !=
+ srx->transport.sin6.sin6_port ||
+ memcmp(&peer->srx.transport.sin6.sin6_addr,
+ &srx->transport.sin6.sin6_addr,
+ sizeof(struct in6_addr)) != 0)
+ goto not_found;
+ break;
#endif
- default:
- BUG();
- }
-
- _leave(" = %p", conn);
- return conn;
+ default:
+ BUG();
}
+ _leave(" = %p", conn);
+ return conn;
+
not_found:
_leave(" = NULL");
return NULL;
diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c
index 01d32f817a7a..7ae7046f0b03 100644
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -12,10 +12,8 @@
static void rxrpc_proto_abort(const char *why,
struct rxrpc_call *call, rxrpc_seq_t seq)
{
- if (rxrpc_abort_call(why, call, seq, RX_PROTOCOL_ERROR, -EBADMSG)) {
- set_bit(RXRPC_CALL_EV_ABORT, &call->events);
- rxrpc_queue_call(call, rxrpc_call_queue_abort);
- }
+ if (rxrpc_abort_call(why, call, seq, RX_PROTOCOL_ERROR, -EBADMSG))
+ rxrpc_send_abort_packet(call);
}
/*
@@ -174,8 +172,8 @@ out_no_clear_ca:
call->cong_cwnd = cwnd;
call->cong_cumul_acks = cumulative_acks;
trace_rxrpc_congest(call, summary, acked_serial, change);
- if (resend && !test_and_set_bit(RXRPC_CALL_EV_RESEND, &call->events))
- rxrpc_queue_call(call, rxrpc_call_queue_resend);
+ if (resend)
+ rxrpc_resend(call, skb);
return;
packet_loss_detected:
@@ -398,6 +396,8 @@ static void rxrpc_input_data_one(struct rxrpc_call *call, struct sk_buff *skb,
/* Send an immediate ACK if we fill in a hole */
else if (!skb_queue_empty(&call->rx_oos_queue))
ack_reason = RXRPC_ACK_DELAY;
+ else
+ atomic_inc_return(&call->ackr_nr_unacked);
window++;
if (after(window, wtop))
@@ -473,14 +473,6 @@ static void rxrpc_input_data_one(struct rxrpc_call *call, struct sk_buff *skb,
}
send_ack:
- if (ack_reason < 0 &&
- atomic_inc_return(&call->ackr_nr_unacked) > 2 &&
- test_and_set_bit(RXRPC_CALL_IDLE_ACK_PENDING, &call->flags)) {
- ack_reason = RXRPC_ACK_IDLE;
- } else if (ack_reason >= 0) {
- set_bit(RXRPC_CALL_IDLE_ACK_PENDING, &call->flags);
- }
-
if (ack_reason >= 0)
rxrpc_send_ACK(call, ack_reason, serial,
rxrpc_propose_ack_input_data);
@@ -510,7 +502,7 @@ static bool rxrpc_input_split_jumbo(struct rxrpc_call *call, struct sk_buff *skb
&jhdr, sizeof(jhdr)) < 0)
goto protocol_error;
- jskb = skb_clone(skb, GFP_ATOMIC);
+ jskb = skb_clone(skb, GFP_NOFS);
if (!jskb) {
kdebug("couldn't clone");
return false;
@@ -562,24 +554,6 @@ static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb)
if (state >= RXRPC_CALL_COMPLETE)
return;
- /* Unshare the packet so that it can be modified for in-place
- * decryption.
- */
- if (sp->hdr.securityIndex != 0) {
- struct sk_buff *nskb = skb_unshare(skb, GFP_ATOMIC);
- if (!nskb) {
- rxrpc_eaten_skb(skb, rxrpc_skb_eaten_by_unshare_nomem);
- return;
- }
-
- if (nskb != skb) {
- rxrpc_eaten_skb(skb, rxrpc_skb_eaten_by_unshare);
- skb = nskb;
- rxrpc_new_skb(skb, rxrpc_skb_new_unshared);
- sp = rxrpc_skb(skb);
- }
- }
-
if (state == RXRPC_CALL_SERVER_RECV_REQUEST) {
unsigned long timo = READ_ONCE(call->next_req_timo);
unsigned long now, expect_req_by;
@@ -599,15 +573,15 @@ static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb)
if ((state == RXRPC_CALL_CLIENT_SEND_REQUEST ||
state == RXRPC_CALL_CLIENT_AWAIT_REPLY) &&
!rxrpc_receiving_reply(call))
- goto out;
+ goto out_notify;
if (!rxrpc_input_split_jumbo(call, skb)) {
rxrpc_proto_abort("VLD", call, sp->hdr.seq);
- goto out;
+ goto out_notify;
}
skb = NULL;
-out:
+out_notify:
trace_rxrpc_notify_socket(call->debug_id, serial);
rxrpc_notify_socket(call);
_leave(" [queued]");
@@ -668,32 +642,6 @@ static void rxrpc_complete_rtt_probe(struct rxrpc_call *call,
}
/*
- * Process the response to a ping that we sent to find out if we lost an ACK.
- *
- * If we got back a ping response that indicates a lower tx_top than what we
- * had at the time of the ping transmission, we adjudge all the DATA packets
- * sent between the response tx_top and the ping-time tx_top to have been lost.
- */
-static void rxrpc_input_check_for_lost_ack(struct rxrpc_call *call)
-{
- if (after(call->acks_lost_top, call->acks_prev_seq) &&
- !test_and_set_bit(RXRPC_CALL_EV_RESEND, &call->events))
- rxrpc_queue_call(call, rxrpc_call_queue_resend);
-}
-
-/*
- * Process a ping response.
- */
-static void rxrpc_input_ping_response(struct rxrpc_call *call,
- ktime_t resp_time,
- rxrpc_serial_t acked_serial,
- rxrpc_serial_t ack_serial)
-{
- if (acked_serial == call->acks_lost_ping)
- rxrpc_input_check_for_lost_ack(call);
-}
-
-/*
* Process the extra information that may be appended to an ACK packet
*/
static void rxrpc_input_ackinfo(struct rxrpc_call *call, struct sk_buff *skb,
@@ -801,7 +749,6 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb)
struct rxrpc_ackpacket ack;
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
struct rxrpc_ackinfo info;
- struct sk_buff *skb_old = NULL;
rxrpc_serial_t ack_serial, acked_serial;
rxrpc_seq_t first_soft_ack, hard_ack, prev_pkt;
int nr_acks, offset, ioffset;
@@ -809,10 +756,8 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb)
_enter("");
offset = sizeof(struct rxrpc_wire_header);
- if (skb_copy_bits(skb, offset, &ack, sizeof(ack)) < 0) {
- rxrpc_proto_abort("XAK", call, 0);
- goto out;
- }
+ if (skb_copy_bits(skb, offset, &ack, sizeof(ack)) < 0)
+ return rxrpc_proto_abort("XAK", call, 0);
offset += sizeof(ack);
ack_serial = sp->hdr.serial;
@@ -863,7 +808,7 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb)
rxrpc_is_client_call(call)) {
rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED,
0, -ENETRESET);
- goto out;
+ return;
}
/* If we get an OUT_OF_SEQUENCE ACK from the server, that can also
@@ -877,7 +822,7 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb)
rxrpc_is_client_call(call)) {
rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED,
0, -ENETRESET);
- goto out;
+ return;
}
/* Discard any out-of-order or duplicate ACKs (outside lock). */
@@ -885,39 +830,25 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb)
trace_rxrpc_rx_discard_ack(call->debug_id, ack_serial,
first_soft_ack, call->acks_first_seq,
prev_pkt, call->acks_prev_seq);
- goto out;
+ return;
}
info.rxMTU = 0;
ioffset = offset + nr_acks + 3;
if (skb->len >= ioffset + sizeof(info) &&
- skb_copy_bits(skb, ioffset, &info, sizeof(info)) < 0) {
- rxrpc_proto_abort("XAI", call, 0);
- goto out;
- }
+ skb_copy_bits(skb, ioffset, &info, sizeof(info)) < 0)
+ return rxrpc_proto_abort("XAI", call, 0);
if (nr_acks > 0)
skb_condense(skb);
- /* Discard any out-of-order or duplicate ACKs (inside lock). */
- if (!rxrpc_is_ack_valid(call, first_soft_ack, prev_pkt)) {
- trace_rxrpc_rx_discard_ack(call->debug_id, ack_serial,
- first_soft_ack, call->acks_first_seq,
- prev_pkt, call->acks_prev_seq);
- goto out;
- }
call->acks_latest_ts = skb->tstamp;
-
call->acks_first_seq = first_soft_ack;
call->acks_prev_seq = prev_pkt;
switch (ack.reason) {
case RXRPC_ACK_PING:
break;
- case RXRPC_ACK_PING_RESPONSE:
- rxrpc_input_ping_response(call, skb->tstamp, acked_serial,
- ack_serial);
- fallthrough;
default:
if (after(acked_serial, call->acks_highest_serial))
call->acks_highest_serial = acked_serial;
@@ -928,10 +859,8 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb)
if (info.rxMTU)
rxrpc_input_ackinfo(call, skb, &info);
- if (first_soft_ack == 0) {
- rxrpc_proto_abort("AK0", call, 0);
- goto out;
- }
+ if (first_soft_ack == 0)
+ return rxrpc_proto_abort("AK0", call, 0);
/* Ignore ACKs unless we are or have just been transmitting. */
switch (READ_ONCE(call->state)) {
@@ -941,45 +870,27 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb)
case RXRPC_CALL_SERVER_AWAIT_ACK:
break;
default:
- goto out;
+ return;
}
if (before(hard_ack, call->acks_hard_ack) ||
- after(hard_ack, call->tx_top)) {
- rxrpc_proto_abort("AKW", call, 0);
- goto out;
- }
- if (nr_acks > call->tx_top - hard_ack) {
- rxrpc_proto_abort("AKN", call, 0);
- goto out;
- }
+ after(hard_ack, call->tx_top))
+ return rxrpc_proto_abort("AKW", call, 0);
+ if (nr_acks > call->tx_top - hard_ack)
+ return rxrpc_proto_abort("AKN", call, 0);
if (after(hard_ack, call->acks_hard_ack)) {
if (rxrpc_rotate_tx_window(call, hard_ack, &summary)) {
rxrpc_end_tx_phase(call, false, "ETA");
- goto out;
+ return;
}
}
if (nr_acks > 0) {
- if (offset > (int)skb->len - nr_acks) {
- rxrpc_proto_abort("XSA", call, 0);
- goto out;
- }
-
- rxrpc_get_skb(skb, rxrpc_skb_get_ack);
- spin_lock(&call->acks_ack_lock);
- skb_old = call->acks_soft_tbl;
- call->acks_soft_tbl = skb;
- spin_unlock(&call->acks_ack_lock);
-
+ if (offset > (int)skb->len - nr_acks)
+ return rxrpc_proto_abort("XSA", call, 0);
rxrpc_input_soft_acks(call, skb->data + offset, first_soft_ack,
nr_acks, &summary);
- } else if (call->acks_soft_tbl) {
- spin_lock(&call->acks_ack_lock);
- skb_old = call->acks_soft_tbl;
- call->acks_soft_tbl = NULL;
- spin_unlock(&call->acks_ack_lock);
}
if (test_bit(RXRPC_CALL_TX_LAST, &call->flags) &&
@@ -989,8 +900,6 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb)
rxrpc_propose_ack_ping_for_lost_reply);
rxrpc_congestion_management(call, skb, &summary, acked_serial);
-out:
- rxrpc_free_skb(skb_old, rxrpc_skb_put_ack);
}
/*
@@ -1020,13 +929,20 @@ static void rxrpc_input_abort(struct rxrpc_call *call, struct sk_buff *skb)
/*
* Process an incoming call packet.
*/
-void rxrpc_input_call_event(struct rxrpc_call *call, struct sk_buff *skb)
+void rxrpc_input_call_packet(struct rxrpc_call *call, struct sk_buff *skb)
{
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
unsigned long timo;
_enter("%p,%p", call, skb);
+ if (sp->hdr.serviceId != call->dest_srx.srx_service)
+ call->dest_srx.srx_service = sp->hdr.serviceId;
+ if ((int)sp->hdr.serial - (int)call->rx_serial > 0)
+ call->rx_serial = sp->hdr.serial;
+ if (!test_bit(RXRPC_CALL_RX_HEARD, &call->flags))
+ set_bit(RXRPC_CALL_RX_HEARD, &call->flags);
+
timo = READ_ONCE(call->next_rx_timo);
if (timo) {
unsigned long now = jiffies, expect_rx_by;
@@ -1072,9 +988,10 @@ void rxrpc_input_call_event(struct rxrpc_call *call, struct sk_buff *skb)
*
* TODO: If callNumber > call_id + 1, renegotiate security.
*/
-void rxrpc_input_implicit_end_call(struct rxrpc_connection *conn,
- struct rxrpc_call *call)
+void rxrpc_implicit_end_call(struct rxrpc_call *call, struct sk_buff *skb)
{
+ struct rxrpc_connection *conn = call->conn;
+
switch (READ_ONCE(call->state)) {
case RXRPC_CALL_SERVER_AWAIT_ACK:
rxrpc_call_completed(call);
@@ -1082,14 +999,14 @@ void rxrpc_input_implicit_end_call(struct rxrpc_connection *conn,
case RXRPC_CALL_COMPLETE:
break;
default:
- if (rxrpc_abort_call("IMP", call, 0, RX_CALL_DEAD, -ESHUTDOWN)) {
- set_bit(RXRPC_CALL_EV_ABORT, &call->events);
- rxrpc_queue_call(call, rxrpc_call_queue_abort);
- }
+ if (rxrpc_abort_call("IMP", call, 0, RX_CALL_DEAD, -ESHUTDOWN))
+ rxrpc_send_abort_packet(call);
trace_rxrpc_improper_term(call);
break;
}
+ rxrpc_input_call_event(call, skb);
+
spin_lock(&conn->bundle->channel_lock);
__rxrpc_disconnect_call(conn, call);
spin_unlock(&conn->bundle->channel_lock);
diff --git a/net/rxrpc/io_thread.c b/net/rxrpc/io_thread.c
index bc65d83fab88..19aa315eddf5 100644
--- a/net/rxrpc/io_thread.c
+++ b/net/rxrpc/io_thread.c
@@ -9,6 +9,10 @@
#include "ar-internal.h"
+static int rxrpc_input_packet_on_conn(struct rxrpc_connection *conn,
+ struct sockaddr_rxrpc *peer_srx,
+ struct sk_buff *skb);
+
/*
* handle data received on the local endpoint
* - may be called in interrupt context
@@ -63,45 +67,19 @@ void rxrpc_error_report(struct sock *sk)
}
/*
- * post connection-level events to the connection
- * - this includes challenges, responses, some aborts and call terminal packet
- * retransmission.
+ * Process event packets targeted at a local endpoint.
*/
-static void rxrpc_post_packet_to_conn(struct rxrpc_connection *conn,
- struct sk_buff *skb)
+static void rxrpc_input_version(struct rxrpc_local *local, struct sk_buff *skb)
{
- _enter("%p,%p", conn, skb);
-
- rxrpc_get_skb(skb, rxrpc_skb_get_conn_work);
- skb_queue_tail(&conn->rx_queue, skb);
- rxrpc_queue_conn(conn, rxrpc_conn_queue_rx_work);
-}
+ struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
+ char v;
-/*
- * post endpoint-level events to the local endpoint
- * - this includes debug and version messages
- */
-static void rxrpc_post_packet_to_local(struct rxrpc_local *local,
- struct sk_buff *skb)
-{
- _enter("%p,%p", local, skb);
+ _enter("");
- if (rxrpc_get_local_maybe(local, rxrpc_local_get_queue)) {
- rxrpc_get_skb(skb, rxrpc_skb_get_local_work);
- skb_queue_tail(&local->event_queue, skb);
- rxrpc_queue_local(local);
- }
-}
-
-/*
- * put a packet up for transport-level abort
- */
-static void rxrpc_reject_packet(struct rxrpc_local *local, struct sk_buff *skb)
-{
- if (rxrpc_get_local_maybe(local, rxrpc_local_get_queue)) {
- rxrpc_get_skb(skb, rxrpc_skb_get_reject_work);
- skb_queue_tail(&local->reject_queue, skb);
- rxrpc_queue_local(local);
+ rxrpc_see_skb(skb, rxrpc_skb_see_version);
+ if (skb_copy_bits(skb, sizeof(struct rxrpc_wire_header), &v, 1) >= 0) {
+ if (v == 0)
+ rxrpc_send_version_request(local, &sp->hdr, skb);
}
}
@@ -156,22 +134,13 @@ static int rxrpc_input_packet(struct rxrpc_local *local, struct sk_buff **_skb)
{
struct rxrpc_connection *conn;
struct sockaddr_rxrpc peer_srx;
- struct rxrpc_channel *chan;
- struct rxrpc_call *call = NULL;
struct rxrpc_skb_priv *sp;
struct rxrpc_peer *peer = NULL;
- struct rxrpc_sock *rx = NULL;
struct sk_buff *skb = *_skb;
- unsigned int channel;
-
- if (skb->tstamp == 0)
- skb->tstamp = ktime_get_real();
+ int ret = 0;
skb_pull(skb, sizeof(struct udphdr));
- /* The UDP protocol already released all skb resources;
- * we are free to add our own data there.
- */
sp = rxrpc_skb(skb);
/* dig out the RxRPC connection details */
@@ -186,15 +155,13 @@ static int rxrpc_input_packet(struct rxrpc_local *local, struct sk_buff **_skb)
}
}
- if (skb->tstamp == 0)
- skb->tstamp = ktime_get_real();
trace_rxrpc_rx_packet(sp);
switch (sp->hdr.type) {
case RXRPC_PACKET_TYPE_VERSION:
if (rxrpc_to_client(sp))
return 0;
- rxrpc_post_packet_to_local(local, skb);
+ rxrpc_input_version(local, skb);
return 0;
case RXRPC_PACKET_TYPE_BUSY:
@@ -259,7 +226,7 @@ static int rxrpc_input_packet(struct rxrpc_local *local, struct sk_buff **_skb)
goto bad_message;
if (WARN_ON_ONCE(rxrpc_extract_addr_from_skb(&peer_srx, skb) < 0))
- return 0; /* Unsupported address type - discard. */
+ return true; /* Unsupported address type - discard. */
if (peer_srx.transport.family != local->srx.transport.family &&
(peer_srx.transport.family == AF_INET &&
@@ -267,171 +234,172 @@ static int rxrpc_input_packet(struct rxrpc_local *local, struct sk_buff **_skb)
pr_warn_ratelimited("AF_RXRPC: Protocol mismatch %u not %u\n",
peer_srx.transport.family,
local->srx.transport.family);
- return 0; /* Wrong address type - discard. */
+ return true; /* Wrong address type - discard. */
+ }
+
+ if (rxrpc_to_client(sp)) {
+ rcu_read_lock();
+ conn = rxrpc_find_client_connection_rcu(local, &peer_srx, skb);
+ conn = rxrpc_get_connection_maybe(conn, rxrpc_conn_get_call_input);
+ rcu_read_unlock();
+ if (!conn) {
+ trace_rxrpc_abort(0, "NCC", sp->hdr.cid,
+ sp->hdr.callNumber, sp->hdr.seq,
+ RXKADINCONSISTENCY, EBADMSG);
+ goto protocol_error;
+ }
+
+ ret = rxrpc_input_packet_on_conn(conn, &peer_srx, skb);
+ rxrpc_put_connection(conn, rxrpc_conn_put_call_input);
+ return ret;
}
+ /* We need to look up service connections by the full protocol
+ * parameter set. We look up the peer first as an intermediate step
+ * and then the connection from the peer's tree.
+ */
rcu_read_lock();
- if (rxrpc_to_server(sp)) {
- /* Weed out packets to services we're not offering. Packets
- * that would begin a call are explicitly rejected and the rest
- * are just discarded.
- */
- rx = rcu_dereference(local->service);
- if (!rx || (sp->hdr.serviceId != rx->srx.srx_service &&
- sp->hdr.serviceId != rx->second_service)
- ) {
- rcu_read_unlock();
- if (sp->hdr.type == RXRPC_PACKET_TYPE_DATA &&
- sp->hdr.seq == 1)
- goto unsupported_service;
- return 0;
- }
+ peer = rxrpc_lookup_peer_rcu(local, &peer_srx);
+ if (!peer) {
+ rcu_read_unlock();
+ return rxrpc_new_incoming_call(local, NULL, NULL, &peer_srx, skb);
}
- conn = rxrpc_find_connection_rcu(local, &peer_srx, skb, &peer);
+ conn = rxrpc_find_service_conn_rcu(peer, skb);
+ conn = rxrpc_get_connection_maybe(conn, rxrpc_conn_get_call_input);
if (conn) {
- if (sp->hdr.securityIndex != conn->security_ix)
- goto wrong_security;
+ rcu_read_unlock();
+ ret = rxrpc_input_packet_on_conn(conn, &peer_srx, skb);
+ rxrpc_put_connection(conn, rxrpc_conn_put_call_input);
+ return ret;
+ }
- if (sp->hdr.serviceId != conn->service_id) {
- int old_id;
+ peer = rxrpc_get_peer_maybe(peer, rxrpc_peer_get_input);
+ rcu_read_unlock();
- if (!test_bit(RXRPC_CONN_PROBING_FOR_UPGRADE, &conn->flags))
- goto reupgrade;
- old_id = cmpxchg(&conn->service_id, conn->orig_service_id,
- sp->hdr.serviceId);
+ ret = rxrpc_new_incoming_call(local, peer, NULL, &peer_srx, skb);
+ rxrpc_put_peer(peer, rxrpc_peer_put_input);
+ if (ret < 0)
+ goto reject_packet;
+ return 0;
- if (old_id != conn->orig_service_id &&
- old_id != sp->hdr.serviceId)
- goto reupgrade;
- }
+bad_message:
+ trace_rxrpc_abort(0, "BAD", sp->hdr.cid, sp->hdr.callNumber, sp->hdr.seq,
+ RX_PROTOCOL_ERROR, EBADMSG);
+protocol_error:
+ skb->priority = RX_PROTOCOL_ERROR;
+ skb->mark = RXRPC_SKB_MARK_REJECT_ABORT;
+reject_packet:
+ rxrpc_reject_packet(local, skb);
+ return ret;
+}
- if (sp->hdr.callNumber == 0) {
- /* Connection-level packet */
- _debug("CONN %p {%d}", conn, conn->debug_id);
- conn = rxrpc_get_connection_maybe(conn, rxrpc_conn_get_conn_input);
- rcu_read_unlock();
- if (conn) {
- rxrpc_post_packet_to_conn(conn, skb);
- rxrpc_put_connection(conn, rxrpc_conn_put_conn_input);
- }
- return 0;
- }
+/*
+ * Deal with a packet that's associated with an extant connection.
+ */
+static int rxrpc_input_packet_on_conn(struct rxrpc_connection *conn,
+ struct sockaddr_rxrpc *peer_srx,
+ struct sk_buff *skb)
+{
+ struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
+ struct rxrpc_channel *chan;
+ struct rxrpc_call *call = NULL;
+ unsigned int channel;
- if ((int)sp->hdr.serial - (int)conn->hi_serial > 0)
- conn->hi_serial = sp->hdr.serial;
+ if (sp->hdr.securityIndex != conn->security_ix)
+ goto wrong_security;
- /* Call-bound packets are routed by connection channel. */
- channel = sp->hdr.cid & RXRPC_CHANNELMASK;
- chan = &conn->channels[channel];
+ if (sp->hdr.serviceId != conn->service_id) {
+ int old_id;
- /* Ignore really old calls */
- if (sp->hdr.callNumber < chan->last_call) {
- rcu_read_unlock();
- return 0;
- }
+ if (!test_bit(RXRPC_CONN_PROBING_FOR_UPGRADE, &conn->flags))
+ goto reupgrade;
+ old_id = cmpxchg(&conn->service_id, conn->orig_service_id,
+ sp->hdr.serviceId);
- if (sp->hdr.callNumber == chan->last_call) {
- if (chan->call ||
- sp->hdr.type == RXRPC_PACKET_TYPE_ABORT) {
- rcu_read_unlock();
- return 0;
- }
+ if (old_id != conn->orig_service_id &&
+ old_id != sp->hdr.serviceId)
+ goto reupgrade;
+ }
- /* For the previous service call, if completed
- * successfully, we discard all further packets.
- */
- if (rxrpc_conn_is_service(conn) &&
- chan->last_type == RXRPC_PACKET_TYPE_ACK) {
- rcu_read_unlock();
- return 0;
- }
+ if (after(sp->hdr.serial, conn->hi_serial))
+ conn->hi_serial = sp->hdr.serial;
- /* But otherwise we need to retransmit the final packet
- * from data cached in the connection record.
- */
- if (sp->hdr.type == RXRPC_PACKET_TYPE_DATA)
- trace_rxrpc_rx_data(chan->call_debug_id,
- sp->hdr.seq,
- sp->hdr.serial,
- sp->hdr.flags);
- conn = rxrpc_get_connection_maybe(conn, rxrpc_conn_get_call_input);
- rcu_read_unlock();
- if (conn) {
- rxrpc_post_packet_to_conn(conn, skb);
- rxrpc_put_connection(conn, rxrpc_conn_put_call_input);
- }
+ /* It's a connection-level packet if the call number is 0. */
+ if (sp->hdr.callNumber == 0)
+ return rxrpc_input_conn_packet(conn, skb);
+
+ /* Call-bound packets are routed by connection channel. */
+ channel = sp->hdr.cid & RXRPC_CHANNELMASK;
+ chan = &conn->channels[channel];
+
+ /* Ignore really old calls */
+ if (sp->hdr.callNumber < chan->last_call)
+ return 0;
+
+ if (sp->hdr.callNumber == chan->last_call) {
+ if (chan->call ||
+ sp->hdr.type == RXRPC_PACKET_TYPE_ABORT)
return 0;
- }
- call = rcu_dereference(chan->call);
+ /* For the previous service call, if completed successfully, we
+ * discard all further packets.
+ */
+ if (rxrpc_conn_is_service(conn) &&
+ chan->last_type == RXRPC_PACKET_TYPE_ACK)
+ return 0;
- if (sp->hdr.callNumber > chan->call_id) {
- if (rxrpc_to_client(sp)) {
- rcu_read_unlock();
- goto reject_packet;
- }
- if (call) {
- rxrpc_input_implicit_end_call(conn, call);
- chan->call = NULL;
- call = NULL;
- }
- }
+ /* But otherwise we need to retransmit the final packet from
+ * data cached in the connection record.
+ */
+ if (sp->hdr.type == RXRPC_PACKET_TYPE_DATA)
+ trace_rxrpc_rx_data(chan->call_debug_id,
+ sp->hdr.seq,
+ sp->hdr.serial,
+ sp->hdr.flags);
+ rxrpc_input_conn_packet(conn, skb);
+ return 0;
+ }
- if (call && !rxrpc_try_get_call(call, rxrpc_call_get_input))
- call = NULL;
+ rcu_read_lock();
+ call = rxrpc_try_get_call(rcu_dereference(chan->call),
+ rxrpc_call_get_input);
+ rcu_read_unlock();
+
+ if (sp->hdr.callNumber > chan->call_id) {
+ if (rxrpc_to_client(sp)) {
+ rxrpc_put_call(call, rxrpc_call_put_input);
+ goto reject_packet;
+ }
if (call) {
- if (sp->hdr.serviceId != call->dest_srx.srx_service)
- call->dest_srx.srx_service = sp->hdr.serviceId;
- if ((int)sp->hdr.serial - (int)call->rx_serial > 0)
- call->rx_serial = sp->hdr.serial;
- if (!test_bit(RXRPC_CALL_RX_HEARD, &call->flags))
- set_bit(RXRPC_CALL_RX_HEARD, &call->flags);
+ rxrpc_implicit_end_call(call, skb);
+ rxrpc_put_call(call, rxrpc_call_put_input);
+ call = NULL;
}
}
if (!call) {
- if (rxrpc_to_client(sp) ||
- sp->hdr.type != RXRPC_PACKET_TYPE_DATA) {
- rcu_read_unlock();
+ if (rxrpc_to_client(sp))
goto bad_message;
- }
- if (sp->hdr.seq != 1) {
- rcu_read_unlock();
+ if (rxrpc_new_incoming_call(conn->local, conn->peer, conn,
+ peer_srx, skb))
return 0;
- }
- call = rxrpc_new_incoming_call(local, rx, &peer_srx, skb);
- if (!call) {
- rcu_read_unlock();
- goto reject_packet;
- }
+ goto reject_packet;
}
- rcu_read_unlock();
-
- /* Process a call packet. */
rxrpc_input_call_event(call, skb);
rxrpc_put_call(call, rxrpc_call_put_input);
- trace_rxrpc_rx_done(0, 0);
return 0;
wrong_security:
- rcu_read_unlock();
trace_rxrpc_abort(0, "SEC", sp->hdr.cid, sp->hdr.callNumber, sp->hdr.seq,
RXKADINCONSISTENCY, EBADMSG);
skb->priority = RXKADINCONSISTENCY;
goto post_abort;
-unsupported_service:
- trace_rxrpc_abort(0, "INV", sp->hdr.cid, sp->hdr.callNumber, sp->hdr.seq,
- RX_INVALID_OPERATION, EOPNOTSUPP);
- skb->priority = RX_INVALID_OPERATION;
- goto post_abort;
-
reupgrade:
- rcu_read_unlock();
trace_rxrpc_abort(0, "UPG", sp->hdr.cid, sp->hdr.callNumber, sp->hdr.seq,
RX_PROTOCOL_ERROR, EBADMSG);
goto protocol_error;
@@ -444,7 +412,7 @@ protocol_error:
post_abort:
skb->mark = RXRPC_SKB_MARK_REJECT_ABORT;
reject_packet:
- rxrpc_reject_packet(local, skb);
+ rxrpc_reject_packet(conn->local, skb);
return 0;
}
@@ -479,6 +447,11 @@ int rxrpc_io_thread(void *data)
continue;
}
+ if (!list_empty(&local->ack_tx_queue)) {
+ rxrpc_transmit_ack_packets(local);
+ continue;
+ }
+
/* Process received packets and errors. */
if ((skb = __skb_dequeue(&rx_queue))) {
switch (skb->mark) {
diff --git a/net/rxrpc/local_event.c b/net/rxrpc/local_event.c
index c344383a20b2..5e69ea6b233d 100644
--- a/net/rxrpc/local_event.c
+++ b/net/rxrpc/local_event.c
@@ -21,9 +21,9 @@ static const char rxrpc_version_string[65] = "linux-" UTS_RELEASE " AF_RXRPC";
/*
* Reply to a version request
*/
-static void rxrpc_send_version_request(struct rxrpc_local *local,
- struct rxrpc_host_header *hdr,
- struct sk_buff *skb)
+void rxrpc_send_version_request(struct rxrpc_local *local,
+ struct rxrpc_host_header *hdr,
+ struct sk_buff *skb)
{
struct rxrpc_wire_header whdr;
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
@@ -73,40 +73,3 @@ static void rxrpc_send_version_request(struct rxrpc_local *local,
_leave("");
}
-
-/*
- * Process event packets targeted at a local endpoint.
- */
-void rxrpc_process_local_events(struct rxrpc_local *local)
-{
- struct sk_buff *skb;
- char v;
-
- _enter("");
-
- skb = skb_dequeue(&local->event_queue);
- if (skb) {
- struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
-
- rxrpc_see_skb(skb, rxrpc_skb_see_local_work);
- _debug("{%d},{%u}", local->debug_id, sp->hdr.type);
-
- switch (sp->hdr.type) {
- case RXRPC_PACKET_TYPE_VERSION:
- if (skb_copy_bits(skb, sizeof(struct rxrpc_wire_header),
- &v, 1) < 0)
- return;
- if (v == 0)
- rxrpc_send_version_request(local, &sp->hdr, skb);
- break;
-
- default:
- /* Just ignore anything we don't understand */
- break;
- }
-
- rxrpc_free_skb(skb, rxrpc_skb_put_input);
- }
-
- _leave("");
-}
diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c
index 03f491cc23ef..c73a5a1bc088 100644
--- a/net/rxrpc/local_object.c
+++ b/net/rxrpc/local_object.c
@@ -20,7 +20,6 @@
#include <net/af_rxrpc.h>
#include "ar-internal.h"
-static void rxrpc_local_processor(struct work_struct *);
static void rxrpc_local_rcu(struct rcu_head *);
/*
@@ -97,12 +96,9 @@ static struct rxrpc_local *rxrpc_alloc_local(struct rxrpc_net *rxnet,
atomic_set(&local->active_users, 1);
local->rxnet = rxnet;
INIT_HLIST_NODE(&local->link);
- INIT_WORK(&local->processor, rxrpc_local_processor);
INIT_LIST_HEAD(&local->ack_tx_queue);
spin_lock_init(&local->ack_tx_lock);
init_rwsem(&local->defrag_sem);
- skb_queue_head_init(&local->reject_queue);
- skb_queue_head_init(&local->event_queue);
skb_queue_head_init(&local->rx_queue);
INIT_LIST_HEAD(&local->call_attend_q);
local->client_bundles = RB_ROOT;
@@ -319,21 +315,6 @@ struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local,
}
/*
- * Queue a local endpoint and pass the caller's reference to the work item.
- */
-void rxrpc_queue_local(struct rxrpc_local *local)
-{
- unsigned int debug_id = local->debug_id;
- int r = refcount_read(&local->ref);
- int u = atomic_read(&local->active_users);
-
- if (rxrpc_queue_work(&local->processor))
- trace_rxrpc_local(debug_id, rxrpc_local_queued, r, u);
- else
- rxrpc_put_local(local, rxrpc_local_put_already_queued);
-}
-
-/*
* Drop a ref on a local endpoint.
*/
void rxrpc_put_local(struct rxrpc_local *local, enum rxrpc_local_trace why)
@@ -374,7 +355,7 @@ struct rxrpc_local *rxrpc_use_local(struct rxrpc_local *local,
/*
* Cease using a local endpoint. Once the number of active users reaches 0, we
- * start the closure of the transport in the work processor.
+ * start the closure of the transport in the I/O thread..
*/
void rxrpc_unuse_local(struct rxrpc_local *local, enum rxrpc_local_trace why)
{
@@ -416,66 +397,18 @@ void rxrpc_destroy_local(struct rxrpc_local *local)
/* At this point, there should be no more packets coming in to the
* local endpoint.
*/
- rxrpc_purge_queue(&local->reject_queue);
- rxrpc_purge_queue(&local->event_queue);
rxrpc_purge_queue(&local->rx_queue);
}
/*
- * Process events on an endpoint. The work item carries a ref which
- * we must release.
- */
-static void rxrpc_local_processor(struct work_struct *work)
-{
- struct rxrpc_local *local =
- container_of(work, struct rxrpc_local, processor);
- bool again;
-
- if (local->dead)
- return;
-
- rxrpc_see_local(local, rxrpc_local_processing);
-
- do {
- again = false;
- if (!__rxrpc_use_local(local, rxrpc_local_use_work))
- break;
-
- if (!list_empty(&local->ack_tx_queue)) {
- rxrpc_transmit_ack_packets(local);
- again = true;
- }
-
- if (!skb_queue_empty(&local->reject_queue)) {
- rxrpc_reject_packets(local);
- again = true;
- }
-
- if (!skb_queue_empty(&local->event_queue)) {
- rxrpc_process_local_events(local);
- again = true;
- }
-
- __rxrpc_unuse_local(local, rxrpc_local_unuse_work);
- } while (again);
-
- rxrpc_put_local(local, rxrpc_local_put_queue);
-}
-
-/*
* Destroy a local endpoint after the RCU grace period expires.
*/
static void rxrpc_local_rcu(struct rcu_head *rcu)
{
struct rxrpc_local *local = container_of(rcu, struct rxrpc_local, rcu);
- _enter("%d", local->debug_id);
-
- ASSERT(!work_pending(&local->processor));
-
rxrpc_see_local(local, rxrpc_local_free);
kfree(local);
- _leave("");
}
/*
diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index 71963b4523be..2ea1fa1b8a6f 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -229,11 +229,6 @@ static int rxrpc_send_ack_packet(struct rxrpc_local *local, struct rxrpc_txbuf *
if (txb->ack.reason == RXRPC_ACK_PING)
txb->wire.flags |= RXRPC_REQUEST_ACK;
- if (txb->ack.reason == RXRPC_ACK_DELAY)
- clear_bit(RXRPC_CALL_DELAY_ACK_PENDING, &call->flags);
- if (txb->ack.reason == RXRPC_ACK_IDLE)
- clear_bit(RXRPC_CALL_IDLE_ACK_PENDING, &call->flags);
-
n = rxrpc_fill_out_ack(conn, call, txb);
if (n == 0)
return 0;
@@ -247,8 +242,6 @@ static int rxrpc_send_ack_packet(struct rxrpc_local *local, struct rxrpc_txbuf *
trace_rxrpc_tx_ack(call->debug_id, serial,
ntohl(txb->ack.firstPacket),
ntohl(txb->ack.serial), txb->ack.reason, txb->ack.nAcks);
- if (txb->ack_why == rxrpc_propose_ack_ping_for_lost_ack)
- call->acks_lost_ping = serial;
if (txb->ack.reason == RXRPC_ACK_PING)
rtt_slot = rxrpc_begin_rtt_probe(call, serial, rxrpc_rtt_tx_ping);
@@ -588,21 +581,20 @@ send_fragmentable:
}
/*
- * reject packets through the local endpoint
+ * Reject a packet through the local endpoint.
*/
-void rxrpc_reject_packets(struct rxrpc_local *local)
+void rxrpc_reject_packet(struct rxrpc_local *local, struct sk_buff *skb)
{
- struct sockaddr_rxrpc srx;
- struct rxrpc_skb_priv *sp;
struct rxrpc_wire_header whdr;
- struct sk_buff *skb;
+ struct sockaddr_rxrpc srx;
+ struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
struct msghdr msg;
struct kvec iov[2];
size_t size;
__be32 code;
int ret, ioc;
- _enter("%d", local->debug_id);
+ rxrpc_see_skb(skb, rxrpc_skb_see_reject);
iov[0].iov_base = &whdr;
iov[0].iov_len = sizeof(whdr);
@@ -616,52 +608,42 @@ void rxrpc_reject_packets(struct rxrpc_local *local)
memset(&whdr, 0, sizeof(whdr));
- while ((skb = skb_dequeue(&local->reject_queue))) {
- rxrpc_see_skb(skb, rxrpc_skb_see_reject);
- sp = rxrpc_skb(skb);
+ switch (skb->mark) {
+ case RXRPC_SKB_MARK_REJECT_BUSY:
+ whdr.type = RXRPC_PACKET_TYPE_BUSY;
+ size = sizeof(whdr);
+ ioc = 1;
+ break;
+ case RXRPC_SKB_MARK_REJECT_ABORT:
+ whdr.type = RXRPC_PACKET_TYPE_ABORT;
+ code = htonl(skb->priority);
+ size = sizeof(whdr) + sizeof(code);
+ ioc = 2;
+ break;
+ default:
+ return;
+ }
- switch (skb->mark) {
- case RXRPC_SKB_MARK_REJECT_BUSY:
- whdr.type = RXRPC_PACKET_TYPE_BUSY;
- size = sizeof(whdr);
- ioc = 1;
- break;
- case RXRPC_SKB_MARK_REJECT_ABORT:
- whdr.type = RXRPC_PACKET_TYPE_ABORT;
- code = htonl(skb->priority);
- size = sizeof(whdr) + sizeof(code);
- ioc = 2;
- break;
- default:
- rxrpc_free_skb(skb, rxrpc_skb_put_input);
- continue;
- }
+ if (rxrpc_extract_addr_from_skb(&srx, skb) == 0) {
+ msg.msg_namelen = srx.transport_len;
- if (rxrpc_extract_addr_from_skb(&srx, skb) == 0) {
- msg.msg_namelen = srx.transport_len;
-
- whdr.epoch = htonl(sp->hdr.epoch);
- whdr.cid = htonl(sp->hdr.cid);
- whdr.callNumber = htonl(sp->hdr.callNumber);
- whdr.serviceId = htons(sp->hdr.serviceId);
- whdr.flags = sp->hdr.flags;
- whdr.flags ^= RXRPC_CLIENT_INITIATED;
- whdr.flags &= RXRPC_CLIENT_INITIATED;
-
- iov_iter_kvec(&msg.msg_iter, WRITE, iov, ioc, size);
- ret = do_udp_sendmsg(local->socket, &msg, size);
- if (ret < 0)
- trace_rxrpc_tx_fail(local->debug_id, 0, ret,
- rxrpc_tx_point_reject);
- else
- trace_rxrpc_tx_packet(local->debug_id, &whdr,
- rxrpc_tx_point_reject);
- }
+ whdr.epoch = htonl(sp->hdr.epoch);
+ whdr.cid = htonl(sp->hdr.cid);
+ whdr.callNumber = htonl(sp->hdr.callNumber);
+ whdr.serviceId = htons(sp->hdr.serviceId);
+ whdr.flags = sp->hdr.flags;
+ whdr.flags ^= RXRPC_CLIENT_INITIATED;
+ whdr.flags &= RXRPC_CLIENT_INITIATED;
- rxrpc_free_skb(skb, rxrpc_skb_put_input);
+ iov_iter_kvec(&msg.msg_iter, WRITE, iov, ioc, size);
+ ret = do_udp_sendmsg(local->socket, &msg, size);
+ if (ret < 0)
+ trace_rxrpc_tx_fail(local->debug_id, 0, ret,
+ rxrpc_tx_point_reject);
+ else
+ trace_rxrpc_tx_packet(local->debug_id, &whdr,
+ rxrpc_tx_point_reject);
}
-
- _leave("");
}
/*
diff --git a/net/rxrpc/peer_event.c b/net/rxrpc/peer_event.c
index 97d017ca3dc4..fb8096e93d2c 100644
--- a/net/rxrpc/peer_event.c
+++ b/net/rxrpc/peer_event.c
@@ -18,9 +18,9 @@
#include <net/ip.h>
#include "ar-internal.h"
-static void rxrpc_store_error(struct rxrpc_peer *, struct sock_exterr_skb *);
-static void rxrpc_distribute_error(struct rxrpc_peer *, int,
- enum rxrpc_call_completion);
+static void rxrpc_store_error(struct rxrpc_peer *, struct sk_buff *);
+static void rxrpc_distribute_error(struct rxrpc_peer *, struct sk_buff *,
+ enum rxrpc_call_completion, int);
/*
* Find the peer associated with a local error.
@@ -161,7 +161,7 @@ void rxrpc_input_error(struct rxrpc_local *local, struct sk_buff *skb)
goto out;
}
- rxrpc_store_error(peer, serr);
+ rxrpc_store_error(peer, skb);
out:
rxrpc_put_peer(peer, rxrpc_peer_put_input_error);
}
@@ -169,19 +169,15 @@ out:
/*
* Map an error report to error codes on the peer record.
*/
-static void rxrpc_store_error(struct rxrpc_peer *peer,
- struct sock_exterr_skb *serr)
+static void rxrpc_store_error(struct rxrpc_peer *peer, struct sk_buff *skb)
{
enum rxrpc_call_completion compl = RXRPC_CALL_NETWORK_ERROR;
- struct sock_extended_err *ee;
- int err;
+ struct sock_exterr_skb *serr = SKB_EXT_ERR(skb);
+ struct sock_extended_err *ee = &serr->ee;
+ int err = ee->ee_errno;
_enter("");
- ee = &serr->ee;
-
- err = ee->ee_errno;
-
switch (ee->ee_origin) {
case SO_EE_ORIGIN_NONE:
case SO_EE_ORIGIN_LOCAL:
@@ -197,14 +193,14 @@ static void rxrpc_store_error(struct rxrpc_peer *peer,
break;
}
- rxrpc_distribute_error(peer, err, compl);
+ rxrpc_distribute_error(peer, skb, compl, err);
}
/*
* Distribute an error that occurred on a peer.
*/
-static void rxrpc_distribute_error(struct rxrpc_peer *peer, int error,
- enum rxrpc_call_completion compl)
+static void rxrpc_distribute_error(struct rxrpc_peer *peer, struct sk_buff *skb,
+ enum rxrpc_call_completion compl, int err)
{
struct rxrpc_call *call;
HLIST_HEAD(error_targets);
@@ -219,7 +215,8 @@ static void rxrpc_distribute_error(struct rxrpc_peer *peer, int error,
spin_unlock(&peer->lock);
rxrpc_see_call(call, rxrpc_call_see_distribute_error);
- rxrpc_set_call_completion(call, compl, 0, -error);
+ rxrpc_set_call_completion(call, compl, 0, -err);
+ rxrpc_input_call_event(call, skb);
spin_lock(&peer->lock);
}
diff --git a/net/rxrpc/recvmsg.c b/net/rxrpc/recvmsg.c
index 5df7f468abed..77d03b9e4c4c 100644
--- a/net/rxrpc/recvmsg.c
+++ b/net/rxrpc/recvmsg.c
@@ -253,11 +253,8 @@ static void rxrpc_rotate_rx_window(struct rxrpc_call *call)
acked = atomic_add_return(call->rx_consumed - old_consumed,
&call->ackr_nr_consumed);
if (acked > 2 &&
- !test_and_set_bit(RXRPC_CALL_IDLE_ACK_PENDING, &call->flags)) {
- rxrpc_send_ACK(call, RXRPC_ACK_IDLE, serial,
- rxrpc_propose_ack_rotate_rx);
- rxrpc_transmit_ack_packets(call->peer->local);
- }
+ !test_and_set_bit(RXRPC_CALL_RX_IS_IDLE, &call->flags))
+ rxrpc_poke_call(call, rxrpc_call_poke_idle);
}
/*
@@ -377,7 +374,7 @@ done:
trace_rxrpc_recvdata(call, rxrpc_recvmsg_data_return, seq,
rx_pkt_offset, rx_pkt_len, ret);
if (ret == -EAGAIN)
- set_bit(RXRPC_CALL_RX_UNDERRUN, &call->flags);
+ set_bit(RXRPC_CALL_RX_IS_IDLE, &call->flags);
return ret;
}
diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c
index 11af37275d5b..58e0a36f6aa9 100644
--- a/net/rxrpc/sendmsg.c
+++ b/net/rxrpc/sendmsg.c
@@ -170,7 +170,7 @@ static void rxrpc_queue_packet(struct rxrpc_sock *rx, struct rxrpc_call *call,
{
unsigned long now;
rxrpc_seq_t seq = txb->seq;
- bool last = test_bit(RXRPC_TXBUF_LAST, &txb->flags);
+ bool last = test_bit(RXRPC_TXBUF_LAST, &txb->flags), poke;
rxrpc_inc_stat(call->rxnet, stat_tx_data);
@@ -188,6 +188,7 @@ static void rxrpc_queue_packet(struct rxrpc_sock *rx, struct rxrpc_call *call,
/* Add the packet to the call's output buffer */
spin_lock(&call->tx_lock);
+ poke = list_empty(&call->tx_sendmsg);
list_add_tail(&txb->call_link, &call->tx_sendmsg);
call->tx_prepared = seq;
spin_unlock(&call->tx_lock);
@@ -220,11 +221,8 @@ static void rxrpc_queue_packet(struct rxrpc_sock *rx, struct rxrpc_call *call,
write_unlock_bh(&call->state_lock);
}
-
- /* Stick the packet on the crypto queue or the transmission queue as
- * appropriate.
- */
- rxrpc_queue_call(call, rxrpc_call_queue_tx_data);
+ if (poke)
+ rxrpc_poke_call(call, rxrpc_call_poke_start);
}
/*
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 23:26:36 +0000