diff options
| -rw-r--r-- | include/trace/events/sunrpc.h | 31 | ||||
| -rw-r--r-- | net/sunrpc/svcsock.c | 39 |
2 files changed, 50 insertions, 20 deletions
diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h index bfea554bd91f..81659876b4af 100644 --- a/include/trace/events/sunrpc.h +++ b/include/trace/events/sunrpc.h @@ -1503,9 +1503,40 @@ DECLARE_EVENT_CLASS(svcsock_class, DEFINE_SVCSOCK_EVENT(udp_send); DEFINE_SVCSOCK_EVENT(tcp_send); DEFINE_SVCSOCK_EVENT(tcp_recv); +DEFINE_SVCSOCK_EVENT(tcp_recv_eagain); +DEFINE_SVCSOCK_EVENT(tcp_recv_err); DEFINE_SVCSOCK_EVENT(data_ready); DEFINE_SVCSOCK_EVENT(write_space); +TRACE_EVENT(svcsock_tcp_recv_short, + TP_PROTO( + const struct svc_xprt *xprt, + u32 expected, + u32 received + ), + + TP_ARGS(xprt, expected, received), + + TP_STRUCT__entry( + __field(u32, expected) + __field(u32, received) + __field(unsigned long, flags) + __string(addr, xprt->xpt_remotebuf) + ), + + TP_fast_assign( + __entry->expected = expected; + __entry->received = received; + __entry->flags = xprt->xpt_flags; + __assign_str(addr, xprt->xpt_remotebuf); + ), + + TP_printk("addr=%s flags=%s expected=%u received=%u", + __get_str(addr), show_svc_xprt_flags(__entry->flags), + __entry->expected, __entry->received + ) +); + TRACE_EVENT(svcsock_tcp_state, TP_PROTO( const struct svc_xprt *xprt, diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index 8cf06b676831..087e21b0f1bb 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -968,23 +968,10 @@ static int svc_tcp_recvfrom(struct svc_rqst *rqstp) svsk->sk_tcplen += len; svsk->sk_datalen += len; } - if (len != want || !svc_sock_final_rec(svsk)) { - svc_tcp_save_pages(svsk, rqstp); - if (len < 0 && len != -EAGAIN) - goto err_delete; - if (len == want) - svc_tcp_fragment_received(svsk); - else - dprintk("svc: incomplete TCP record (%d of %d)\n", - (int)(svsk->sk_tcplen - sizeof(rpc_fraghdr)), - svc_sock_reclen(svsk)); - goto err_noclose; - } - - if (svsk->sk_datalen < 8) { - svsk->sk_datalen = 0; - goto err_delete; /* client is nuts. */ - } + if (len != want || !svc_sock_final_rec(svsk)) + goto err_incomplete; + if (svsk->sk_datalen < 8) + goto err_nuts; rqstp->rq_arg.len = svsk->sk_datalen; rqstp->rq_arg.page_base = 0; @@ -1019,14 +1006,26 @@ static int svc_tcp_recvfrom(struct svc_rqst *rqstp) return rqstp->rq_arg.len; +err_incomplete: + svc_tcp_save_pages(svsk, rqstp); + if (len < 0 && len != -EAGAIN) + goto err_delete; + if (len == want) + svc_tcp_fragment_received(svsk); + else + trace_svcsock_tcp_recv_short(&svsk->sk_xprt, + svc_sock_reclen(svsk), + svsk->sk_tcplen - sizeof(rpc_fraghdr)); + goto err_noclose; error: if (len != -EAGAIN) goto err_delete; - dprintk("RPC: TCP recvfrom got EAGAIN\n"); + trace_svcsock_tcp_recv_eagain(&svsk->sk_xprt, 0); return 0; +err_nuts: + svsk->sk_datalen = 0; err_delete: - printk(KERN_NOTICE "%s: recvfrom returned errno %d\n", - svsk->sk_xprt.xpt_server->sv_name, -len); + trace_svcsock_tcp_recv_err(&svsk->sk_xprt, len); set_bit(XPT_CLOSE, &svsk->sk_xprt.xpt_flags); err_noclose: return 0; /* record not complete */ |