diff options
| -rw-r--r-- | net/rxrpc/ar-internal.h | 1 | ||||
| -rw-r--r-- | net/rxrpc/output.c | 13 | ||||
| -rw-r--r-- | net/rxrpc/peer_object.c | 1 | ||||
| -rw-r--r-- | net/rxrpc/sendmsg.c | 2 |
4 files changed, 13 insertions, 4 deletions
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index 1c4597b..b13754a 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -255,6 +255,7 @@ struct rxrpc_peer { /* calculated RTT cache */ #define RXRPC_RTT_CACHE_SIZE 32 + ktime_t rtt_last_req; /* Time of last RTT request */ u64 rtt; /* Current RTT estimate (in nS) */ u64 rtt_sum; /* Sum of cache contents */ u64 rtt_cache[RXRPC_RTT_CACHE_SIZE]; /* Determined RTT cache */ diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c index db01fbb..282cb1e 100644 --- a/net/rxrpc/output.c +++ b/net/rxrpc/output.c @@ -270,6 +270,12 @@ int rxrpc_send_data_packet(struct rxrpc_call *call, struct sk_buff *skb) msg.msg_controllen = 0; msg.msg_flags = 0; + /* If our RTT cache needs working on, request an ACK. */ + if ((call->peer->rtt_usage < 3 && sp->hdr.seq & 1) || + ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000), + ktime_get_real())) + whdr.flags |= RXRPC_REQUEST_ACK; + if (IS_ENABLED(CONFIG_AF_RXRPC_INJECT_LOSS)) { static int lose; if ((lose++ & 7) == 7) { @@ -301,11 +307,14 @@ int rxrpc_send_data_packet(struct rxrpc_call *call, struct sk_buff *skb) done: if (ret >= 0) { - skb->tstamp = ktime_get_real(); + ktime_t now = ktime_get_real(); + skb->tstamp = now; smp_wmb(); sp->hdr.serial = serial; - if (whdr.flags & RXRPC_REQUEST_ACK) + if (whdr.flags & RXRPC_REQUEST_ACK) { + call->peer->rtt_last_req = now; trace_rxrpc_rtt_tx(call, rxrpc_rtt_tx_data, serial); + } } _leave(" = %d [%u]", ret, call->peer->maxdata); return ret; diff --git a/net/rxrpc/peer_object.c b/net/rxrpc/peer_object.c index f3e5766..941b724 100644 --- a/net/rxrpc/peer_object.c +++ b/net/rxrpc/peer_object.c @@ -244,6 +244,7 @@ static void rxrpc_init_peer(struct rxrpc_peer *peer, unsigned long hash_key) peer->hash_key = hash_key; rxrpc_assess_MTU_size(peer); peer->mtu = peer->if_mtu; + peer->rtt_last_req = ktime_get_real(); switch (peer->srx.transport.family) { case AF_INET: diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c index 607223f..ca7c3be 100644 --- a/net/rxrpc/sendmsg.c +++ b/net/rxrpc/sendmsg.c @@ -299,8 +299,6 @@ static int rxrpc_send_data(struct rxrpc_sock *rx, else if (call->tx_top - call->tx_hard_ack < call->tx_winsize) sp->hdr.flags |= RXRPC_MORE_PACKETS; - if (seq & 1) - sp->hdr.flags |= RXRPC_REQUEST_ACK; ret = conn->security->secure_packet( call, skb, skb->mark, skb->head); |
