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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/misc.c
parentba39f3a0ed756ccd882adf4a77916ec863db3ce4 (diff)
downloadlinux-sh-71f3ca408fd43b586c02480768a503af075b247e.tar.gz
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/misc.c')
-rw-r--r--net/rxrpc/misc.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/net/rxrpc/misc.c b/net/rxrpc/misc.c
index c7065d893d1e..026e1f2e83ff 100644
--- a/net/rxrpc/misc.c
+++ b/net/rxrpc/misc.c
@@ -102,6 +102,24 @@ const char *rxrpc_acks(u8 reason)
return str[reason];
}
+const char rxrpc_skb_traces[rxrpc_skb__nr_trace][7] = {
+ [rxrpc_skb_rx_cleaned] = "Rx CLN",
+ [rxrpc_skb_rx_freed] = "Rx FRE",
+ [rxrpc_skb_rx_got] = "Rx GOT",
+ [rxrpc_skb_rx_lost] = "Rx *L*",
+ [rxrpc_skb_rx_received] = "Rx RCV",
+ [rxrpc_skb_rx_purged] = "Rx PUR",
+ [rxrpc_skb_rx_rotated] = "Rx ROT",
+ [rxrpc_skb_rx_seen] = "Rx SEE",
+ [rxrpc_skb_tx_cleaned] = "Tx CLN",
+ [rxrpc_skb_tx_freed] = "Tx FRE",
+ [rxrpc_skb_tx_got] = "Tx GOT",
+ [rxrpc_skb_tx_lost] = "Tx *L*",
+ [rxrpc_skb_tx_new] = "Tx NEW",
+ [rxrpc_skb_tx_rotated] = "Tx ROT",
+ [rxrpc_skb_tx_seen] = "Tx SEE",
+};
+
const char rxrpc_conn_traces[rxrpc_conn__nr_trace][4] = {
[rxrpc_conn_new_client] = "NWc",
[rxrpc_conn_new_service] = "NWs",