From 1bc919e9f3cc97662ed8ff1034b485b87c706358 Mon Sep 17 00:00:00 2001 From: Florin Coras Date: Sun, 18 Oct 2020 20:17:49 -0700 Subject: vcl: cleanup read and write ready Type: improvement Signed-off-by: Florin Coras Change-Id: Ib6afedf24c7bd7cc0d98bb324a83517030a05aa7 --- src/vcl/vcl_private.c | 106 +++++++++++++++++++++----------------------------- 1 file changed, 45 insertions(+), 61 deletions(-) (limited to 'src/vcl/vcl_private.c') diff --git a/src/vcl/vcl_private.c b/src/vcl/vcl_private.c index a1c252d9e99..54187a7ad02 100644 --- a/src/vcl/vcl_private.c +++ b/src/vcl/vcl_private.c @@ -228,9 +228,6 @@ vcl_worker_ctrl_mq (vcl_worker_t * wrk) int vcl_session_read_ready (vcl_session_t * s) { - u32 max_deq; - - /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ if (PREDICT_FALSE (s->is_vep)) { VDBG (0, "ERROR: session %u: cannot read from an epoll session!", @@ -238,50 +235,43 @@ vcl_session_read_ready (vcl_session_t * s) return VPPCOM_EBADFD; } - if (PREDICT_FALSE (!(vcl_session_is_ready (s) - || s->session_state == VCL_STATE_LISTEN))) + if (vcl_session_is_open (s)) { - vcl_session_state_t state = s->session_state; - int rv; + if (vcl_session_is_ct (s)) + return svm_fifo_max_dequeue_cons (s->ct_rx_fifo); - rv = (state == VCL_STATE_DISCONNECT) ? - VPPCOM_ECONNRESET : VPPCOM_ENOTCONN; + if (s->is_dgram) + { + session_dgram_pre_hdr_t ph; + u32 max_deq; + + max_deq = svm_fifo_max_dequeue_cons (s->rx_fifo); + if (max_deq <= SESSION_CONN_HDR_LEN) + return 0; + if (svm_fifo_peek (s->rx_fifo, 0, sizeof (ph), (u8 *) & ph) < 0) + return 0; + if (ph.data_length + SESSION_CONN_HDR_LEN > max_deq) + return 0; + + return ph.data_length; + } - VDBG (1, "session %u [0x%llx]: not open! state 0x%x (%s), ret %d (%s)", - s->session_index, s->vpp_handle, state, - vppcom_session_state_str (state), rv, vppcom_retval_str (rv)); - return rv; + return svm_fifo_max_dequeue_cons (s->rx_fifo); } - - if (s->session_state == VCL_STATE_LISTEN) - return clib_fifo_elts (s->accept_evts_fifo); - - if (vcl_session_is_ct (s)) - return svm_fifo_max_dequeue_cons (s->ct_rx_fifo); - - max_deq = svm_fifo_max_dequeue_cons (s->rx_fifo); - - if (s->is_dgram) + else if (s->session_state == VCL_STATE_LISTEN) { - session_dgram_pre_hdr_t ph; - - if (max_deq <= SESSION_CONN_HDR_LEN) - return 0; - if (svm_fifo_peek (s->rx_fifo, 0, sizeof (ph), (u8 *) & ph) < 0) - return 0; - if (ph.data_length + SESSION_CONN_HDR_LEN > max_deq) - return 0; - - return ph.data_length; + return clib_fifo_elts (s->accept_evts_fifo); + } + else + { + return (s->session_state == VCL_STATE_DISCONNECT) ? + VPPCOM_ECONNRESET : VPPCOM_ENOTCONN; } - - return max_deq; } int vcl_session_write_ready (vcl_session_t * s) { - /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ if (PREDICT_FALSE (s->is_vep)) { VDBG (0, "session %u [0x%llx]: cannot write to an epoll session!", @@ -289,40 +279,34 @@ vcl_session_write_ready (vcl_session_t * s) return VPPCOM_EBADFD; } - if (PREDICT_FALSE (s->session_state == VCL_STATE_LISTEN)) + if (vcl_session_is_open (s)) + { + if (vcl_session_is_ct (s)) + return svm_fifo_max_enqueue_prod (s->ct_tx_fifo); + + if (s->is_dgram) + { + u32 max_enq = svm_fifo_max_enqueue_prod (s->tx_fifo); + + if (max_enq <= sizeof (session_dgram_hdr_t)) + return 0; + return max_enq - sizeof (session_dgram_hdr_t); + } + + return svm_fifo_max_enqueue_prod (s->tx_fifo); + } + else if (s->session_state == VCL_STATE_LISTEN) { if (s->tx_fifo) return svm_fifo_max_enqueue_prod (s->tx_fifo); else return VPPCOM_EBADFD; } - - if (PREDICT_FALSE (!vcl_session_is_ready (s))) + else { - vcl_session_state_t state = s->session_state; - int rv; - - rv = (state == VCL_STATE_DISCONNECT) ? + return (s->session_state == VCL_STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN; - VDBG (0, "session %u [0x%llx]: not open! state 0x%x (%s), ret %d (%s)", - s->session_index, s->vpp_handle, state, - vppcom_session_state_str (state), rv, vppcom_retval_str (rv)); - return rv; } - - if (vcl_session_is_ct (s)) - return svm_fifo_max_enqueue_prod (s->ct_tx_fifo); - - if (s->is_dgram) - { - u32 max_enq = svm_fifo_max_enqueue_prod (s->tx_fifo); - - if (max_enq <= sizeof (session_dgram_hdr_t)) - return 0; - return max_enq - sizeof (session_dgram_hdr_t); - } - - return svm_fifo_max_enqueue_prod (s->tx_fifo); } int -- cgit 1.2.3-korg