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authorDavid Howells <dhowells@redhat.com>2016-09-17 10:49:14 +0100
committerDavid Howells <dhowells@redhat.com>2016-09-17 11:24:04 +0100
commit71f3ca408fd43b586c02480768a503af075b247e (patch)
tree9fcca5ef4f931aa9836e5f92b78abfb5c2d68a55 /net/rxrpc/call_event.c
parentba39f3a0ed756ccd882adf4a77916ec863db3ce4 (diff)
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rxrpc: Improve skb tracing
Improve sk_buff tracing within AF_RXRPC by the following means: (1) Use an enum to note the event type rather than plain integers and use an array of event names rather than a big multi ?: list. (2) Distinguish Rx from Tx packets and account them separately. This requires the call phase to be tracked so that we know what we might find in rxtx_buffer[]. (3) Add a parameter to rxrpc_{new,see,get,free}_skb() to indicate the event type. (4) A pair of 'rotate' events are added to indicate packets that are about to be rotated out of the Rx and Tx windows. (5) A pair of 'lost' events are added, along with rxrpc_lose_skb() for packet loss injection recording. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc/call_event.c')
-rw-r--r--net/rxrpc/call_event.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c
index f0cabc48a1b7..7d1b99824ed9 100644
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -170,7 +170,7 @@ static void rxrpc_resend(struct rxrpc_call *call)
continue;
skb = call->rxtx_buffer[ix];
- rxrpc_see_skb(skb);
+ rxrpc_see_skb(skb, rxrpc_skb_tx_seen);
sp = rxrpc_skb(skb);
if (annotation == RXRPC_TX_ANNO_UNACK) {
@@ -199,7 +199,7 @@ static void rxrpc_resend(struct rxrpc_call *call)
continue;
skb = call->rxtx_buffer[ix];
- rxrpc_get_skb(skb);
+ rxrpc_get_skb(skb, rxrpc_skb_tx_got);
spin_unlock_bh(&call->lock);
sp = rxrpc_skb(skb);
@@ -211,7 +211,7 @@ static void rxrpc_resend(struct rxrpc_call *call)
if (rxrpc_send_data_packet(call->conn, skb) < 0) {
call->resend_at = now + 2;
- rxrpc_free_skb(skb);
+ rxrpc_free_skb(skb, rxrpc_skb_tx_freed);
return;
}
@@ -219,7 +219,7 @@ static void rxrpc_resend(struct rxrpc_call *call)
rxrpc_expose_client_call(call);
sp->resend_at = now + rxrpc_resend_timeout;
- rxrpc_free_skb(skb);
+ rxrpc_free_skb(skb, rxrpc_skb_tx_freed);
spin_lock_bh(&call->lock);
/* We need to clear the retransmit state, but there are two