Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
index f8233bc..4eb91d9 100644
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -23,7 +23,6 @@
[RXRPC_CALL_CLIENT_RECV_REPLY] = "ClRcvRpl",
[RXRPC_CALL_SERVER_PREALLOC] = "SvPrealc",
[RXRPC_CALL_SERVER_SECURING] = "SvSecure",
- [RXRPC_CALL_SERVER_ACCEPTING] = "SvAccept",
[RXRPC_CALL_SERVER_RECV_REQUEST] = "SvRcvReq",
[RXRPC_CALL_SERVER_ACK_REQUEST] = "SvAckReq",
[RXRPC_CALL_SERVER_SEND_REPLY] = "SvSndRpl",
@@ -41,6 +40,11 @@
struct kmem_cache *rxrpc_call_jar;
+static struct semaphore rxrpc_call_limiter =
+ __SEMAPHORE_INITIALIZER(rxrpc_call_limiter, 1000);
+static struct semaphore rxrpc_kernel_call_limiter =
+ __SEMAPHORE_INITIALIZER(rxrpc_kernel_call_limiter, 1000);
+
static void rxrpc_call_timer_expired(struct timer_list *t)
{
struct rxrpc_call *call = from_timer(call, t, timer);
@@ -153,6 +157,7 @@
call->cong_ssthresh = RXRPC_RXTX_BUFF_SIZE - 1;
call->rxnet = rxnet;
+ call->rtt_avail = RXRPC_CALL_RTT_AVAIL_MASK;
atomic_inc(&rxnet->nr_calls);
return call;
@@ -209,6 +214,34 @@
}
/*
+ * Wait for a call slot to become available.
+ */
+static struct semaphore *rxrpc_get_call_slot(struct rxrpc_call_params *p, gfp_t gfp)
+{
+ struct semaphore *limiter = &rxrpc_call_limiter;
+
+ if (p->kernel)
+ limiter = &rxrpc_kernel_call_limiter;
+ if (p->interruptibility == RXRPC_UNINTERRUPTIBLE) {
+ down(limiter);
+ return limiter;
+ }
+ return down_interruptible(limiter) < 0 ? NULL : limiter;
+}
+
+/*
+ * Release a call slot.
+ */
+static void rxrpc_put_call_slot(struct rxrpc_call *call)
+{
+ struct semaphore *limiter = &rxrpc_call_limiter;
+
+ if (test_bit(RXRPC_CALL_KERNEL, &call->flags))
+ limiter = &rxrpc_kernel_call_limiter;
+ up(limiter);
+}
+
+/*
* Set up a call for the given parameters.
* - Called with the socket lock held, which it must release.
* - If it returns a call, the call's lock will need releasing by the caller.
@@ -224,15 +257,21 @@
{
struct rxrpc_call *call, *xcall;
struct rxrpc_net *rxnet;
+ struct semaphore *limiter;
struct rb_node *parent, **pp;
const void *here = __builtin_return_address(0);
int ret;
_enter("%p,%lx", rx, p->user_call_ID);
+ limiter = rxrpc_get_call_slot(p, gfp);
+ if (!limiter)
+ return ERR_PTR(-ERESTARTSYS);
+
call = rxrpc_alloc_client_call(rx, srx, gfp, debug_id);
if (IS_ERR(call)) {
release_sock(&rx->sk);
+ up(limiter);
_leave(" = %ld", PTR_ERR(call));
return call;
}
@@ -242,6 +281,8 @@
trace_rxrpc_call(call->debug_id, rxrpc_call_new_client,
atomic_read(&call->usage),
here, (const void *)p->user_call_ID);
+ if (p->kernel)
+ __set_bit(RXRPC_CALL_KERNEL, &call->flags);
/* We need to protect a partially set up call against the user as we
* will be acting outside the socket lock.
@@ -351,9 +392,7 @@
call->call_id = sp->hdr.callNumber;
call->service_id = sp->hdr.serviceId;
call->cid = sp->hdr.cid;
- call->state = RXRPC_CALL_SERVER_ACCEPTING;
- if (sp->hdr.securityIndex > 0)
- call->state = RXRPC_CALL_SERVER_SECURING;
+ call->state = RXRPC_CALL_SERVER_SECURING;
call->cong_tstamp = skb->tstamp;
/* Set the channel for this call. We don't get channel_lock as we're
@@ -470,6 +509,8 @@
BUG();
spin_unlock_bh(&call->lock);
+ rxrpc_put_call_slot(call);
+
del_timer_sync(&call->timer);
/* Make sure we don't get any more notifications */