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| author | David Howells <dhowells@redhat.com> | 2016-09-17 11:49:14 +0200 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2016-09-17 12:24:04 +0200 |
| commit | 71f3ca408fd43b586c02480768a503af075b247e (patch) | |
| tree | 9fcca5ef4f931aa9836e5f92b78abfb5c2d68a55 /net/rxrpc/recvmsg.c | |
| parent | rxrpc: Remove printks from rxrpc_recvmsg_data() to fix uninit var (diff) | |
| download | linux-71f3ca408fd43b586c02480768a503af075b247e.tar.xz linux-71f3ca408fd43b586c02480768a503af075b247e.zip | |
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/recvmsg.c')
| -rw-r--r-- | net/rxrpc/recvmsg.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/rxrpc/recvmsg.c b/net/rxrpc/recvmsg.c index 79e65668bc58..6ba4af5a8d95 100644 --- a/net/rxrpc/recvmsg.c +++ b/net/rxrpc/recvmsg.c @@ -155,6 +155,7 @@ static void rxrpc_end_rx_phase(struct rxrpc_call *call) break; case RXRPC_CALL_SERVER_RECV_REQUEST: + call->tx_phase = true; call->state = RXRPC_CALL_SERVER_ACK_REQUEST; break; default: @@ -185,7 +186,7 @@ static void rxrpc_rotate_rx_window(struct rxrpc_call *call) hard_ack++; ix = hard_ack & RXRPC_RXTX_BUFF_MASK; skb = call->rxtx_buffer[ix]; - rxrpc_see_skb(skb); + rxrpc_see_skb(skb, rxrpc_skb_rx_rotated); sp = rxrpc_skb(skb); flags = sp->hdr.flags; serial = sp->hdr.serial; @@ -197,7 +198,7 @@ static void rxrpc_rotate_rx_window(struct rxrpc_call *call) /* Barrier against rxrpc_input_data(). */ smp_store_release(&call->rx_hard_ack, hard_ack); - rxrpc_free_skb(skb); + rxrpc_free_skb(skb, rxrpc_skb_rx_freed); _debug("%u,%u,%02x", hard_ack, top, flags); trace_rxrpc_receive(call, rxrpc_receive_rotate, serial, hard_ack); @@ -317,7 +318,7 @@ static int rxrpc_recvmsg_data(struct socket *sock, struct rxrpc_call *call, break; } smp_rmb(); - rxrpc_see_skb(skb); + rxrpc_see_skb(skb, rxrpc_skb_rx_seen); sp = rxrpc_skb(skb); if (!(flags & MSG_PEEK)) |