From 5f06632fc700e5f5c72b7238aee3fd84663ddf4f Mon Sep 17 00:00:00 2001 From: Florin Coras Date: Mon, 22 Jul 2019 19:03:03 -0700 Subject: session: add transport deleted state Type: fix Distinguish between closed and deleted states to avoid deleting the session prior to the transport connection. Change-Id: Ia285ce94b26a70773f8c0ce9d2c73095d3e2a337 Signed-off-by: Florin Coras --- src/vnet/session/session.c | 19 +++++++++++-------- src/vnet/session/session_cli.c | 4 ++-- src/vnet/session/session_types.h | 1 + 3 files changed, 14 insertions(+), 10 deletions(-) (limited to 'src/vnet/session') diff --git a/src/vnet/session/session.c b/src/vnet/session/session.c index ea1a8c9fc5e..477215e3d34 100644 --- a/src/vnet/session/session.c +++ b/src/vnet/session/session.c @@ -793,13 +793,14 @@ session_transport_delete_notify (transport_connection_t * tc) case SESSION_STATE_ACCEPTING: case SESSION_STATE_TRANSPORT_CLOSING: case SESSION_STATE_CLOSING: + case SESSION_STATE_TRANSPORT_CLOSED: /* If transport finishes or times out before we get a reply * from the app, mark transport as closed and wait for reply * before removing the session. Cleanup session table in advance * because transport will soon be closed and closed sessions * are assumed to have been removed from the lookup table */ session_lookup_del_session (s); - s->session_state = SESSION_STATE_TRANSPORT_CLOSED; + s->session_state = SESSION_STATE_TRANSPORT_DELETED; session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT); svm_fifo_dequeue_drop_all (s->tx_fifo); break; @@ -815,7 +816,7 @@ session_transport_delete_notify (transport_connection_t * tc) svm_fifo_dequeue_drop_all (s->tx_fifo); session_program_transport_close (s); break; - case SESSION_STATE_TRANSPORT_CLOSED: + case SESSION_STATE_TRANSPORT_DELETED: break; case SESSION_STATE_CLOSED: session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT); @@ -858,11 +859,10 @@ session_transport_closed_notify (transport_connection_t * tc) * a transport close, only mark the session transport as closed */ else if (s->session_state <= SESSION_STATE_CLOSING) { - session_lookup_del_session (s); s->session_state = SESSION_STATE_TRANSPORT_CLOSED; } - /* In all closing states but transport closed switch to closed */ - else if (s->session_state != SESSION_STATE_TRANSPORT_CLOSED) + /* If app also closed, switch to closed */ + else if (s->session_state == SESSION_STATE_APP_CLOSED) s->session_state = SESSION_STATE_CLOSED; app_wrk = app_worker_get_if_valid (s->app_wrk_index); @@ -1118,7 +1118,8 @@ session_close (session_t * s) { /* Session will only be removed once both app and transport * acknowledge the close */ - if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED) + if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED + || s->session_state == SESSION_STATE_TRANSPORT_DELETED) session_program_transport_close (s); return; } @@ -1139,8 +1140,10 @@ session_transport_close (session_t * s) { if (s->session_state >= SESSION_STATE_APP_CLOSED) { - /* If transport is already closed, just free the session */ - if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSED) + if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED) + s->session_state = SESSION_STATE_CLOSED; + /* If transport is already deleted, just free the session */ + else if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED) session_free_w_fifos (s); return; } diff --git a/src/vnet/session/session_cli.c b/src/vnet/session/session_cli.c index ca4b8c12f8d..fd598f45d3e 100755 --- a/src/vnet/session/session_cli.c +++ b/src/vnet/session/session_cli.c @@ -59,7 +59,7 @@ format_session (u8 * s, va_list * args) u32 tp = session_get_transport_proto (ss); u8 *str = 0; - if (ss->session_state >= SESSION_STATE_TRANSPORT_CLOSED) + if (ss->session_state >= SESSION_STATE_TRANSPORT_DELETED) { s = format (s, "[%u:%u] CLOSED", ss->thread_index, ss->session_index); return s; @@ -330,7 +330,7 @@ show_session_command_fn (vlib_main_t * vm, unformat_input_t * input, /* *INDENT-OFF* */ pool_foreach (s, pool, ({ - if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSED) + if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED) { n_closed += 1; continue; diff --git a/src/vnet/session/session_types.h b/src/vnet/session/session_types.h index 682094c9cb6..25b61166b11 100644 --- a/src/vnet/session/session_types.h +++ b/src/vnet/session/session_types.h @@ -133,6 +133,7 @@ typedef enum SESSION_STATE_CLOSING, SESSION_STATE_APP_CLOSED, SESSION_STATE_TRANSPORT_CLOSED, + SESSION_STATE_TRANSPORT_DELETED, SESSION_STATE_CLOSED, SESSION_STATE_N_STATES, } session_state_t; -- cgit 1.2.3-korg