GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-22 23:04:43 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

rxrpc: Add a tracepoint to follow packets in the Rx buffer

Browse source 
Add a tracepoint to follow the life of packets that get added to a call's
receive buffer.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2016-09-17 10:49:13 +01:00
parent f3639df2d9
commit 58dc63c998
6 changed files with 73 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

11
net/rxrpc/recvmsg.c
View file

@ -134,6 +134,7 @@ static void rxrpc_end_rx_phase(struct rxrpc_call *call)
{
_enter("%d,%s", call->debug_id, rxrpc_call_states[call->state]);
trace_rxrpc_receive(call, rxrpc_receive_end, 0, call->rx_top);
ASSERTCMP(call->rx_hard_ack, ==, call->rx_top);
if (call->state == RXRPC_CALL_CLIENT_RECV_REPLY) {
@ -167,6 +168,7 @@ static void rxrpc_rotate_rx_window(struct rxrpc_call *call)
{
struct rxrpc_skb_priv *sp;
struct sk_buff *skb;
rxrpc_serial_t serial;
rxrpc_seq_t hard_ack, top;
u8 flags;
int ix;
@ -183,6 +185,10 @@ static void rxrpc_rotate_rx_window(struct rxrpc_call *call)
rxrpc_see_skb(skb);
sp = rxrpc_skb(skb);
flags = sp->hdr.flags;
serial = sp->hdr.serial;
if (call->rxtx_annotations[ix] & RXRPC_RX_ANNO_JUMBO)
serial += (call->rxtx_annotations[ix] & RXRPC_RX_ANNO_JUMBO) - 1;
call->rxtx_buffer[ix] = NULL;
call->rxtx_annotations[ix] = 0;
/* Barrier against rxrpc_input_data(). */
@ -191,6 +197,7 @@ static void rxrpc_rotate_rx_window(struct rxrpc_call *call)
rxrpc_free_skb(skb);
_debug("%u,%u,%02x", hard_ack, top, flags);
trace_rxrpc_receive(call, rxrpc_receive_rotate, serial, hard_ack);
if (flags & RXRPC_LAST_PACKET)
rxrpc_end_rx_phase(call);
}
@ -309,6 +316,10 @@ static int rxrpc_recvmsg_data(struct socket *sock, struct rxrpc_call *call,
rxrpc_see_skb(skb);
sp = rxrpc_skb(skb);
if (!(flags & MSG_PEEK))
trace_rxrpc_receive(call, rxrpc_receive_front,
sp->hdr.serial, seq);
if (msg)
sock_recv_timestamp(msg, sock->sk, skb);