summaryrefslogtreecommitdiff
path: root/net
diff options
context:
space:
mode:
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/hci_conn.c5
-rw-r--r--net/bluetooth/hci_event.c8
-rw-r--r--net/rxrpc/ar-internal.h13
-rw-r--r--net/rxrpc/call_event.c3
-rw-r--r--net/rxrpc/input.c31
-rw-r--r--net/rxrpc/output.c20
-rw-r--r--net/rxrpc/recvmsg.c8
-rw-r--r--net/rxrpc/sysctl.c4
-rw-r--r--net/smc/af_smc.c46
9 files changed, 82 insertions, 56 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 882a7df13005..ac06c9724c7f 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -943,10 +943,11 @@ static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err)
bt_dev_err(hdev, "request failed to create LE connection: err %d", err);
- if (!conn)
+ /* Check if connection is still pending */
+ if (conn != hci_lookup_le_connect(hdev))
goto done;
- hci_le_conn_failed(conn, err);
+ hci_conn_failed(conn, err);
done:
hci_dev_unlock(hdev);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 0270e597c285..af17dfb20e01 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5632,10 +5632,12 @@ static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
status = HCI_ERROR_INVALID_PARAMETERS;
}
- if (status) {
- hci_conn_failed(conn, status);
+ /* All connection failure handling is taken care of by the
+ * hci_conn_failed function which is triggered by the HCI
+ * request completion callbacks used for connecting.
+ */
+ if (status)
goto unlock;
- }
if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
addr_type = BDADDR_LE_PUBLIC;
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index dcc0ec0bf3de..571436064cd6 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -668,13 +668,12 @@ struct rxrpc_call {
spinlock_t input_lock; /* Lock for packet input to this call */
- /* receive-phase ACK management */
+ /* Receive-phase ACK management (ACKs we send). */
u8 ackr_reason; /* reason to ACK */
rxrpc_serial_t ackr_serial; /* serial of packet being ACK'd */
- rxrpc_serial_t ackr_first_seq; /* first sequence number received */
- rxrpc_seq_t ackr_prev_seq; /* previous sequence number received */
- rxrpc_seq_t ackr_consumed; /* Highest packet shown consumed */
- rxrpc_seq_t ackr_seen; /* Highest packet shown seen */
+ rxrpc_seq_t ackr_highest_seq; /* Higest sequence number received */
+ atomic_t ackr_nr_unacked; /* Number of unacked packets */
+ atomic_t ackr_nr_consumed; /* Number of packets needing hard ACK */
/* RTT management */
rxrpc_serial_t rtt_serial[4]; /* Serial number of DATA or PING sent */
@@ -684,8 +683,10 @@ struct rxrpc_call {
#define RXRPC_CALL_RTT_AVAIL_MASK 0xf
#define RXRPC_CALL_RTT_PEND_SHIFT 8
- /* transmission-phase ACK management */
+ /* Transmission-phase ACK management (ACKs we've received). */
ktime_t acks_latest_ts; /* Timestamp of latest ACK received */
+ rxrpc_seq_t acks_first_seq; /* first sequence number received */
+ rxrpc_seq_t acks_prev_seq; /* Highest previousPacket received */
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 */
diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c
index e426f6831aab..f8ecad2b730e 100644
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -406,7 +406,8 @@ recheck_state:
goto recheck_state;
}
- if (test_and_clear_bit(RXRPC_CALL_EV_RESEND, &call->events)) {
+ 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;
}
diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c
index 16c0af41c202..721d847ba92b 100644
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -412,8 +412,8 @@ static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb)
{
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
enum rxrpc_call_state state;
- unsigned int j, nr_subpackets;
- rxrpc_serial_t serial = sp->hdr.serial, ack_serial = 0;
+ unsigned int j, nr_subpackets, nr_unacked = 0;
+ rxrpc_serial_t serial = sp->hdr.serial, ack_serial = serial;
rxrpc_seq_t seq0 = sp->hdr.seq, hard_ack;
bool immediate_ack = false, jumbo_bad = false;
u8 ack = 0;
@@ -453,7 +453,6 @@ static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb)
!rxrpc_receiving_reply(call))
goto unlock;
- call->ackr_prev_seq = seq0;
hard_ack = READ_ONCE(call->rx_hard_ack);
nr_subpackets = sp->nr_subpackets;
@@ -534,6 +533,9 @@ static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb)
ack_serial = serial;
}
+ if (after(seq0, call->ackr_highest_seq))
+ call->ackr_highest_seq = seq0;
+
/* Queue the packet. We use a couple of memory barriers here as need
* to make sure that rx_top is perceived to be set after the buffer
* pointer and that the buffer pointer is set after the annotation and
@@ -567,6 +569,8 @@ static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb)
sp = NULL;
}
+ nr_unacked++;
+
if (last) {
set_bit(RXRPC_CALL_RX_LAST, &call->flags);
if (!ack) {
@@ -586,9 +590,14 @@ static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb)
}
call->rx_expect_next = seq + 1;
}
+ if (!ack)
+ ack_serial = serial;
}
ack:
+ if (atomic_add_return(nr_unacked, &call->ackr_nr_unacked) > 2 && !ack)
+ ack = RXRPC_ACK_IDLE;
+
if (ack)
rxrpc_propose_ACK(call, ack, ack_serial,
immediate_ack, true,
@@ -812,7 +821,7 @@ static void rxrpc_input_soft_acks(struct rxrpc_call *call, u8 *acks,
static bool rxrpc_is_ack_valid(struct rxrpc_call *call,
rxrpc_seq_t first_pkt, rxrpc_seq_t prev_pkt)
{
- rxrpc_seq_t base = READ_ONCE(call->ackr_first_seq);
+ rxrpc_seq_t base = READ_ONCE(call->acks_first_seq);
if (after(first_pkt, base))
return true; /* The window advanced */
@@ -820,7 +829,7 @@ static bool rxrpc_is_ack_valid(struct rxrpc_call *call,
if (before(first_pkt, base))
return false; /* firstPacket regressed */
- if (after_eq(prev_pkt, call->ackr_prev_seq))
+ if (after_eq(prev_pkt, call->acks_prev_seq))
return true; /* previousPacket hasn't regressed. */
/* Some rx implementations put a serial number in previousPacket. */
@@ -933,8 +942,8 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb)
/* Discard any out-of-order or duplicate ACKs (outside 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->ackr_first_seq,
- prev_pkt, call->ackr_prev_seq);
+ first_soft_ack, call->acks_first_seq,
+ prev_pkt, call->acks_prev_seq);
return;
}
@@ -949,14 +958,14 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *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->ackr_first_seq,
- prev_pkt, call->ackr_prev_seq);
+ first_soft_ack, call->acks_first_seq,
+ prev_pkt, call->acks_prev_seq);
goto out;
}
call->acks_latest_ts = skb->tstamp;
- call->ackr_first_seq = first_soft_ack;
- call->ackr_prev_seq = prev_pkt;
+ call->acks_first_seq = first_soft_ack;
+ call->acks_prev_seq = prev_pkt;
/* Parse rwind and mtu sizes if provided. */
if (buf.info.rxMTU)
diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index a45c83f22236..9683617db704 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -74,11 +74,18 @@ static size_t rxrpc_fill_out_ack(struct rxrpc_connection *conn,
u8 reason)
{
rxrpc_serial_t serial;
+ unsigned int tmp;
rxrpc_seq_t hard_ack, top, seq;
int ix;
u32 mtu, jmax;
u8 *ackp = pkt->acks;
+ tmp = atomic_xchg(&call->ackr_nr_unacked, 0);
+ tmp |= atomic_xchg(&call->ackr_nr_consumed, 0);
+ if (!tmp && (reason == RXRPC_ACK_DELAY ||
+ reason == RXRPC_ACK_IDLE))
+ return 0;
+
/* Barrier against rxrpc_input_data(). */
serial = call->ackr_serial;
hard_ack = READ_ONCE(call->rx_hard_ack);
@@ -89,7 +96,7 @@ static size_t rxrpc_fill_out_ack(struct rxrpc_connection *conn,
pkt->ack.bufferSpace = htons(8);
pkt->ack.maxSkew = htons(0);
pkt->ack.firstPacket = htonl(hard_ack + 1);
- pkt->ack.previousPacket = htonl(call->ackr_prev_seq);
+ pkt->ack.previousPacket = htonl(call->ackr_highest_seq);
pkt->ack.serial = htonl(serial);
pkt->ack.reason = reason;
pkt->ack.nAcks = top - hard_ack;
@@ -223,6 +230,10 @@ int rxrpc_send_ack_packet(struct rxrpc_call *call, bool ping,
n = rxrpc_fill_out_ack(conn, call, pkt, &hard_ack, &top, reason);
spin_unlock_bh(&call->lock);
+ if (n == 0) {
+ kfree(pkt);
+ return 0;
+ }
iov[0].iov_base = pkt;
iov[0].iov_len = sizeof(pkt->whdr) + sizeof(pkt->ack) + n;
@@ -259,13 +270,6 @@ int rxrpc_send_ack_packet(struct rxrpc_call *call, bool ping,
ntohl(pkt->ack.serial),
false, true,
rxrpc_propose_ack_retry_tx);
- } else {
- spin_lock_bh(&call->lock);
- if (after(hard_ack, call->ackr_consumed))
- call->ackr_consumed = hard_ack;
- if (after(top, call->ackr_seen))
- call->ackr_seen = top;
- spin_unlock_bh(&call->lock);
}
rxrpc_set_keepalive(call);
diff --git a/net/rxrpc/recvmsg.c b/net/rxrpc/recvmsg.c
index eca6dda26c77..250f23bc1c07 100644
--- a/net/rxrpc/recvmsg.c
+++ b/net/rxrpc/recvmsg.c
@@ -260,11 +260,9 @@ static void rxrpc_rotate_rx_window(struct rxrpc_call *call)
rxrpc_end_rx_phase(call, serial);
} else {
/* Check to see if there's an ACK that needs sending. */
- if (after_eq(hard_ack, call->ackr_consumed + 2) ||
- after_eq(top, call->ackr_seen + 2) ||
- (hard_ack == top && after(hard_ack, call->ackr_consumed)))
- rxrpc_propose_ACK(call, RXRPC_ACK_DELAY, serial,
- true, true,
+ if (atomic_inc_return(&call->ackr_nr_consumed) > 2)
+ rxrpc_propose_ACK(call, RXRPC_ACK_IDLE, serial,
+ true, false,
rxrpc_propose_ack_rotate_rx);
if (call->ackr_reason && call->ackr_reason != RXRPC_ACK_DELAY)
rxrpc_send_ack_packet(call, false, NULL);
diff --git a/net/rxrpc/sysctl.c b/net/rxrpc/sysctl.c
index 540351d6a5f4..555e0910786b 100644
--- a/net/rxrpc/sysctl.c
+++ b/net/rxrpc/sysctl.c
@@ -12,7 +12,7 @@
static struct ctl_table_header *rxrpc_sysctl_reg_table;
static const unsigned int four = 4;
-static const unsigned int thirtytwo = 32;
+static const unsigned int max_backlog = RXRPC_BACKLOG_MAX - 1;
static const unsigned int n_65535 = 65535;
static const unsigned int n_max_acks = RXRPC_RXTX_BUFF_SIZE - 1;
static const unsigned long one_jiffy = 1;
@@ -89,7 +89,7 @@ static struct ctl_table rxrpc_sysctl_table[] = {
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = (void *)&four,
- .extra2 = (void *)&thirtytwo,
+ .extra2 = (void *)&max_backlog,
},
{
.procname = "rx_window_size",
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 5f70642a8044..1a556f47f89e 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -1584,11 +1584,11 @@ static int smc_connect(struct socket *sock, struct sockaddr *addr,
if (rc && rc != -EINPROGRESS)
goto out;
- sock_hold(&smc->sk); /* sock put in passive closing */
if (smc->use_fallback) {
sock->state = rc ? SS_CONNECTING : SS_CONNECTED;
goto out;
}
+ sock_hold(&smc->sk); /* sock put in passive closing */
if (flags & O_NONBLOCK) {
if (queue_work(smc_hs_wq, &smc->connect_work))
smc->connect_nonblock = 1;
@@ -2118,13 +2118,13 @@ static int smc_listen_rdma_reg(struct smc_sock *new_smc, bool local_first)
return 0;
}
-static void smc_find_rdma_v2_device_serv(struct smc_sock *new_smc,
- struct smc_clc_msg_proposal *pclc,
- struct smc_init_info *ini)
+static int smc_find_rdma_v2_device_serv(struct smc_sock *new_smc,
+ struct smc_clc_msg_proposal *pclc,
+ struct smc_init_info *ini)
{
struct smc_clc_v2_extension *smc_v2_ext;
u8 smcr_version;
- int rc;
+ int rc = 0;
if (!(ini->smcr_version & SMC_V2) || !smcr_indicated(ini->smc_type_v2))
goto not_found;
@@ -2142,26 +2142,31 @@ static void smc_find_rdma_v2_device_serv(struct smc_sock *new_smc,
ini->smcrv2.saddr = new_smc->clcsock->sk->sk_rcv_saddr;
ini->smcrv2.daddr = smc_ib_gid_to_ipv4(smc_v2_ext->roce);
rc = smc_find_rdma_device(new_smc, ini);
- if (rc) {
- smc_find_ism_store_rc(rc, ini);
+ if (rc)
goto not_found;
- }
+
if (!ini->smcrv2.uses_gateway)
memcpy(ini->smcrv2.nexthop_mac, pclc->lcl.mac, ETH_ALEN);
smcr_version = ini->smcr_version;
ini->smcr_version = SMC_V2;
rc = smc_listen_rdma_init(new_smc, ini);
- if (!rc)
- rc = smc_listen_rdma_reg(new_smc, ini->first_contact_local);
- if (!rc)
- return;
- ini->smcr_version = smcr_version;
- smc_find_ism_store_rc(rc, ini);
+ if (rc) {
+ ini->smcr_version = smcr_version;
+ goto not_found;
+ }
+ rc = smc_listen_rdma_reg(new_smc, ini->first_contact_local);
+ if (rc) {
+ ini->smcr_version = smcr_version;
+ goto not_found;
+ }
+ return 0;
not_found:
+ rc = rc ?: SMC_CLC_DECL_NOSMCDEV;
ini->smcr_version &= ~SMC_V2;
ini->check_smcrv2 = false;
+ return rc;
}
static int smc_find_rdma_v1_device_serv(struct smc_sock *new_smc,
@@ -2194,6 +2199,7 @@ static int smc_listen_find_device(struct smc_sock *new_smc,
struct smc_init_info *ini)
{
int prfx_rc;
+ int rc;
/* check for ISM device matching V2 proposed device */
smc_find_ism_v2_device_serv(new_smc, pclc, ini);
@@ -2221,14 +2227,18 @@ static int smc_listen_find_device(struct smc_sock *new_smc,
return ini->rc ?: SMC_CLC_DECL_NOSMCDDEV;
/* check if RDMA V2 is available */
- smc_find_rdma_v2_device_serv(new_smc, pclc, ini);
- if (ini->smcrv2.ib_dev_v2)
+ rc = smc_find_rdma_v2_device_serv(new_smc, pclc, ini);
+ if (!rc)
return 0;
+ /* skip V1 check if V2 is unavailable for non-Device reason */
+ if (rc != SMC_CLC_DECL_NOSMCDEV &&
+ rc != SMC_CLC_DECL_NOSMCRDEV &&
+ rc != SMC_CLC_DECL_NOSMCDDEV)
+ return rc;
+
/* check if RDMA V1 is available */
if (!prfx_rc) {
- int rc;
-
rc = smc_find_rdma_v1_device_serv(new_smc, pclc, ini);
smc_find_ism_store_rc(rc, ini);
return (!rc) ? 0 : ini->rc;
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-30 17:44:40 +0000