Acked-by: Jarno Rajahalme <jrajaha...@nicira.com>
& merged to master,
Jarno
On Nov 14, 2014, at 9:26 AM, Daniele Venturino <daniele.ventur...@m3s.it> wrote:
> Global transitions are highest priority transitions. When the condition
> associated with a global transition is met, it supersedes all other exit
> conditions including UCT.
>
> Extracted from 802.1D-2004 standard (17.16):
>
> A transition that is global in nature (i.e., a transition that occurs from any
> of the possible states if the condition attached to the arrow is met) is
> denoted by an open arrow, i.e., no specific state is identified as the origin
> of the transition. When the condition associated with a global transition is
> met, it supersedes all other exit conditions including UCT. The special global
> condition BEGIN supersedes all other global conditions, and once asserted
> remains asserted until all state blocks have executed to the point that
> variable assignments and other consequences of their execution remain
> unchanged.
>
> Signed-off-by: Daniele Venturino <daniele.ventur...@m3s.it>
> ---
> lib/rstp-state-machines.c | 265 ++++++++++++++++++++++++++++++++--------------
> 1 file changed, 188 insertions(+), 77 deletions(-)
>
> diff --git a/lib/rstp-state-machines.c b/lib/rstp-state-machines.c
> index ac66488..fda8a72 100644
> --- a/lib/rstp-state-machines.c
> +++ b/lib/rstp-state-machines.c
> @@ -518,7 +518,11 @@ port_receive_sm(struct rstp_port *p)
> p->port_receive_sm_state = PORT_RECEIVE_SM_DISCARD;
> /* no break */
> case PORT_RECEIVE_SM_DISCARD:
> - if (p->rcvd_bpdu && p->port_enabled) {
> + if ((p->rcvd_bpdu || (p->edge_delay_while != r->migrate_time))
> + && !p->port_enabled) {
> + /* Global transition. */
> + p->port_receive_sm_state = PORT_RECEIVE_SM_DISCARD_EXEC;
> + } else if (p->rcvd_bpdu && p->port_enabled) {
> p->port_receive_sm_state = PORT_RECEIVE_SM_RECEIVE_EXEC;
> }
> break;
> @@ -530,7 +534,11 @@ port_receive_sm(struct rstp_port *p)
> p->port_receive_sm_state = PORT_RECEIVE_SM_RECEIVE;
> /* no break */
> case PORT_RECEIVE_SM_RECEIVE:
> - if (p->rcvd_bpdu && p->port_enabled && !p->rcvd_msg) {
> + if ((p->rcvd_bpdu || (p->edge_delay_while != r->migrate_time))
> + && !p->port_enabled) {
> + /* Global transition. */
> + p->port_receive_sm_state = PORT_RECEIVE_SM_DISCARD_EXEC;
> + } else if (p->rcvd_bpdu && p->port_enabled && !p->rcvd_msg) {
> p->port_receive_sm_state = PORT_RECEIVE_SM_RECEIVE_EXEC;
> }
> break;
> @@ -1127,12 +1135,11 @@ port_information_sm(struct rstp_port *p)
> old_state = p->port_information_sm_state;
> r = p->rstp;
>
> - if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> - p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> - }
> switch (p->port_information_sm_state) {
> case PORT_INFORMATION_SM_INIT:
> - if (r->begin) {
> + if (r->begin
> + || (!p->port_enabled && p->info_is != INFO_IS_DISABLED)) {
> + /* Global transition. */
> p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> }
> break;
> @@ -1146,7 +1153,10 @@ port_information_sm(struct rstp_port *p)
> p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED;
> /* no break */
> case PORT_INFORMATION_SM_DISABLED:
> - if (p->port_enabled) {
> + if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> + /* Global transition. */
> + p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> + } else if (p->port_enabled) {
> p->port_information_sm_state = PORT_INFORMATION_SM_AGED_EXEC;
> } else if (p->rcvd_msg) {
> p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> @@ -1159,7 +1169,10 @@ port_information_sm(struct rstp_port *p)
> p->port_information_sm_state = PORT_INFORMATION_SM_AGED;
> /* no break */
> case PORT_INFORMATION_SM_AGED:
> - if (p->selected && p->updt_info) {
> + if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> + /* Global transition. */
> + p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> + } else if (p->selected && p->updt_info) {
> p->port_information_sm_state = PORT_INFORMATION_SM_UPDATE_EXEC;
> }
> break;
> @@ -1183,13 +1196,21 @@ port_information_sm(struct rstp_port *p)
> p->port_information_sm_state = PORT_INFORMATION_SM_UPDATE;
> /* no break */
> case PORT_INFORMATION_SM_UPDATE:
> - p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> + /* Global transition. */
> + p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> + } else {
> + p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + }
> break;
> case PORT_INFORMATION_SM_CURRENT_EXEC:
> p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT;
> /* no break */
> case PORT_INFORMATION_SM_CURRENT:
> - if (p->rcvd_msg && !p->updt_info) {
> + if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> + /* Global transition. */
> + p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> + } else if (p->rcvd_msg && !p->updt_info) {
> p->port_information_sm_state = PORT_INFORMATION_SM_RECEIVE_EXEC;
> } else if (p->selected && p->updt_info) {
> p->port_information_sm_state = PORT_INFORMATION_SM_UPDATE_EXEC;
> @@ -1204,29 +1225,34 @@ port_information_sm(struct rstp_port *p)
> p->port_information_sm_state = PORT_INFORMATION_SM_RECEIVE;
> /* no break */
> case PORT_INFORMATION_SM_RECEIVE:
> - switch (p->rcvd_info) {
> - case SUPERIOR_DESIGNATED_INFO:
> - p->port_information_sm_state =
> - PORT_INFORMATION_SM_SUPERIOR_DESIGNATED_EXEC;
> - break;
> - case REPEATED_DESIGNATED_INFO:
> - p->port_information_sm_state =
> - PORT_INFORMATION_SM_REPEATED_DESIGNATED_EXEC;
> - break;
> - case INFERIOR_DESIGNATED_INFO:
> - p->port_information_sm_state =
> - PORT_INFORMATION_SM_INFERIOR_DESIGNATED_EXEC;
> - break;
> - case INFERIOR_ROOT_ALTERNATE_INFO:
> - p->port_information_sm_state =
> - PORT_INFORMATION_SM_NOT_DESIGNATED_EXEC;
> - break;
> - case OTHER_INFO:
> - p->port_information_sm_state = PORT_INFORMATION_SM_OTHER_EXEC;
> - break;
> - default:
> - OVS_NOT_REACHED();
> - /* no break */
> + if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> + /* Global transition. */
> + p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> + } else {
> + switch (p->rcvd_info) {
> + case SUPERIOR_DESIGNATED_INFO:
> + p->port_information_sm_state =
> + PORT_INFORMATION_SM_SUPERIOR_DESIGNATED_EXEC;
> + break;
> + case REPEATED_DESIGNATED_INFO:
> + p->port_information_sm_state =
> + PORT_INFORMATION_SM_REPEATED_DESIGNATED_EXEC;
> + break;
> + case INFERIOR_DESIGNATED_INFO:
> + p->port_information_sm_state =
> + PORT_INFORMATION_SM_INFERIOR_DESIGNATED_EXEC;
> + break;
> + case INFERIOR_ROOT_ALTERNATE_INFO:
> + p->port_information_sm_state =
> + PORT_INFORMATION_SM_NOT_DESIGNATED_EXEC;
> + break;
> + case OTHER_INFO:
> + p->port_information_sm_state =
> PORT_INFORMATION_SM_OTHER_EXEC;
> + break;
> + default:
> + OVS_NOT_REACHED();
> + /* no break */
> + }
> }
> break;
> case PORT_INFORMATION_SM_OTHER_EXEC:
> @@ -1234,7 +1260,12 @@ port_information_sm(struct rstp_port *p)
> p->port_information_sm_state = PORT_INFORMATION_SM_OTHER;
> /* no break */
> case PORT_INFORMATION_SM_OTHER:
> - p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> + /* Global transition. */
> + p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> + } else {
> + p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + }
> break;
> case PORT_INFORMATION_SM_NOT_DESIGNATED_EXEC:
> record_agreement(p);
> @@ -1243,7 +1274,12 @@ port_information_sm(struct rstp_port *p)
> p->port_information_sm_state = PORT_INFORMATION_SM_NOT_DESIGNATED;
> /* no break */
> case PORT_INFORMATION_SM_NOT_DESIGNATED:
> - p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> + /* Global transition. */
> + p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> + } else {
> + p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + }
> break;
> case PORT_INFORMATION_SM_INFERIOR_DESIGNATED_EXEC:
> record_dispute(p);
> @@ -1251,7 +1287,12 @@ port_information_sm(struct rstp_port *p)
> p->port_information_sm_state =
> PORT_INFORMATION_SM_INFERIOR_DESIGNATED;
> /* no break */
> case PORT_INFORMATION_SM_INFERIOR_DESIGNATED:
> - p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> + /* Global transition. */
> + p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> + } else {
> + p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + }
> break;
> case PORT_INFORMATION_SM_REPEATED_DESIGNATED_EXEC:
> record_proposal(p);
> @@ -1261,7 +1302,12 @@ port_information_sm(struct rstp_port *p)
> p->port_information_sm_state =
> PORT_INFORMATION_SM_REPEATED_DESIGNATED;
> /* no break */
> case PORT_INFORMATION_SM_REPEATED_DESIGNATED:
> - p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> + /* Global transition. */
> + p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> + } else {
> + p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + }
> break;
> case PORT_INFORMATION_SM_SUPERIOR_DESIGNATED_EXEC:
> p->agreed = p->proposing = false;
> @@ -1279,7 +1325,12 @@ port_information_sm(struct rstp_port *p)
> p->port_information_sm_state =
> PORT_INFORMATION_SM_SUPERIOR_DESIGNATED;
> /* no break */
> case PORT_INFORMATION_SM_SUPERIOR_DESIGNATED:
> - p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + if (!p->port_enabled && p->info_is != INFO_IS_DISABLED) {
> + /* Global transition. */
> + p->port_information_sm_state = PORT_INFORMATION_SM_DISABLED_EXEC;
> + } else {
> + p->port_information_sm_state = PORT_INFORMATION_SM_CURRENT_EXEC;
> + }
> break;
> default:
> OVS_NOT_REACHED();
> @@ -1465,7 +1516,7 @@ port_role_transition_sm(struct rstp_port *p)
> /* no break */
> case PORT_ROLE_TRANSITION_SM_DISABLE_PORT:
> if (check_selected_role_change(p, ROLE_DISABLED)) {
> - break;
> + /* Global transition. */
> } else if (p->selected && !p->updt_info && !p->learning
> && !p->forwarding) {
> p->port_role_transition_sm_state =
> @@ -1482,7 +1533,7 @@ port_role_transition_sm(struct rstp_port *p)
> /* no break */
> case PORT_ROLE_TRANSITION_SM_DISABLED_PORT:
> if (check_selected_role_change(p, ROLE_DISABLED)) {
> - break;
> + /* Global transition. */
> } else if (p->selected && !p->updt_info
> && (p->fd_while != p->designated_times.max_age || p->sync
> || p->re_root || !p->synced)) {
> @@ -1497,7 +1548,7 @@ port_role_transition_sm(struct rstp_port *p)
> /* no break */
> case PORT_ROLE_TRANSITION_SM_ROOT_PORT:
> if (check_selected_role_change(p, ROLE_ROOT)) {
> - break;
> + /* Global transition. */
> } else if (p->selected && !p->updt_info) {
> if (p->rr_while != p->designated_times.forward_delay) {
> p->port_role_transition_sm_state =
> @@ -1536,38 +1587,62 @@ port_role_transition_sm(struct rstp_port *p)
> }
> break;
> case PORT_ROLE_TRANSITION_SM_REROOT_EXEC:
> - set_re_root_tree(p);
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_ROOT)) {
> + /* Global transition. */
> + } else {
> + set_re_root_tree(p);
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_ROOT_AGREED_EXEC:
> - p->proposed = p->sync = false;
> - p->agree = p->new_info = true;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_ROOT)) {
> + /* Global transition. */
> + } else {
> + p->proposed = p->sync = false;
> + p->agree = p->new_info = true;
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_ROOT_PROPOSED_EXEC:
> set_sync_tree(p);
> p->proposed = false;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_ROOT)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_ROOT_FORWARD_EXEC:
> p->fd_while = 0;
> p->forward = true;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_ROOT)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_ROOT_LEARN_EXEC:
> p->fd_while = forward_delay(p);
> p->learn = true;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_ROOT)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_REROOTED_EXEC:
> p->re_root = false;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_ROOT)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_ROOT_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC:
> p->role = ROLE_DESIGNATED;
> @@ -1576,7 +1651,7 @@ port_role_transition_sm(struct rstp_port *p)
> /* no break */
> case PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT:
> if (check_selected_role_change(p, ROLE_DESIGNATED)) {
> - break;
> + /* Global transition. */
> } else if (p->selected && !p->updt_info) {
> if (((p->sync && !p->synced)
> || (p->re_root && p->rr_while != 0) || p->disputed)
> @@ -1611,41 +1686,65 @@ port_role_transition_sm(struct rstp_port *p)
> break;
> case PORT_ROLE_TRANSITION_SM_DESIGNATED_RETIRED_EXEC:
> p->re_root = false;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_DESIGNATED)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_DESIGNATED_SYNCED_EXEC:
> p->rr_while = 0;
> p->synced = true;
> p->sync = false;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_DESIGNATED)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_DESIGNATED_PROPOSE_EXEC:
> p->proposing = true;
> p->edge_delay_while = edge_delay(p);
> p->new_info = true;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_DESIGNATED)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_DESIGNATED_FORWARD_EXEC:
> p->forward = true;
> p->fd_while = 0;
> p->agreed = p->send_rstp;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_DESIGNATED)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_DESIGNATED_LEARN_EXEC:
> p->learn = true;
> p->fd_while = forward_delay(p);
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_DESIGNATED)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_DESIGNATED_DISCARD_EXEC:
> p->learn = p->forward = p->disputed = false;
> p->fd_while = forward_delay(p);
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_DESIGNATED)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_DESIGNATED_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT_EXEC:
> p->fd_while = p->designated_times.forward_delay;
> @@ -1657,7 +1756,7 @@ port_role_transition_sm(struct rstp_port *p)
> /* no break */
> case PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT:
> if (check_selected_role_change(p, ROLE_ALTERNATE)) {
> - break;
> + /* Global transition. */
> } else if (p->selected && !p->updt_info) {
> if (p->rb_while != 2 * p->designated_times.hello_time
> && p->role == ROLE_BACKUP) {
> @@ -1681,14 +1780,22 @@ port_role_transition_sm(struct rstp_port *p)
> p->proposed = false;
> p->agree = true;
> p->new_info = true;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_ALTERNATE)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_ALTERNATE_PROPOSED_EXEC:
> set_sync_tree(p);
> p->proposed = false;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_ALTERNATE)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT_EXEC;
> + }
> break;
> case PORT_ROLE_TRANSITION_SM_BLOCK_PORT_EXEC:
> p->role = p->selected_role;
> @@ -1697,7 +1804,7 @@ port_role_transition_sm(struct rstp_port *p)
> /* no break */
> case PORT_ROLE_TRANSITION_SM_BLOCK_PORT:
> if (check_selected_role_change(p, ROLE_ALTERNATE)) {
> - break;
> + /* Global transition. */
> } else if (p->selected && !p->updt_info && !p->learning &&
> !p->forwarding) {
> p->port_role_transition_sm_state =
> @@ -1706,8 +1813,12 @@ port_role_transition_sm(struct rstp_port *p)
> break;
> case PORT_ROLE_TRANSITION_SM_BACKUP_PORT_EXEC:
> p->rb_while = 2 * p->designated_times.hello_time;
> - p->port_role_transition_sm_state =
> - PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT_EXEC;
> + if (check_selected_role_change(p, ROLE_ALTERNATE)) {
> + /* Global transition. */
> + } else {
> + p->port_role_transition_sm_state =
> + PORT_ROLE_TRANSITION_SM_ALTERNATE_PORT_EXEC;
> + }
> break;
> default:
> OVS_NOT_REACHED();
> --
> 1.8.1.2
>
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