From 9852694f9e9ac12868463094b894a1da61535a7f Mon Sep 17 00:00:00 2001 From: Justin Pettit Date: Thu, 10 Dec 2009 00:08:39 -0800 Subject: [PATCH] ovs-brcompatd: First cut at integration with new config db This is an extremely lightly tested attempt at switching ovs-brcompatd from using the config file to the new config db. There are a lot of shortcomings in this cut, but we need to make progress on the XenServer integration, so it's going in now. Expect changes in the near future. --- vswitchd/automake.mk | 4 +- vswitchd/ovs-brcompatd.c | 531 +++++++++++++++++++++++++-------------- 2 files changed, 345 insertions(+), 190 deletions(-) diff --git a/vswitchd/automake.mk b/vswitchd/automake.mk index d26092062..1d9d92b1c 100644 --- a/vswitchd/automake.mk +++ b/vswitchd/automake.mk @@ -23,7 +23,9 @@ vswitchd_ovs_vswitchd_LDADD = \ $(SSL_LIBS) vswitchd_ovs_brcompatd_SOURCES = \ - vswitchd/ovs-brcompatd.c + vswitchd/ovs-brcompatd.c \ + vswitchd/vswitch-idl.c \ + vswitchd/vswitch-idl.h vswitchd_ovs_brcompatd_LDADD = \ lib/libopenvswitch.a \ diff --git a/vswitchd/ovs-brcompatd.c b/vswitchd/ovs-brcompatd.c index 7944b8b01..b7627e01e 100644 --- a/vswitchd/ovs-brcompatd.c +++ b/vswitchd/ovs-brcompatd.c @@ -33,7 +33,6 @@ #include #include -#include "cfg.h" #include "command-line.h" #include "coverage.h" #include "daemon.h" @@ -46,6 +45,7 @@ #include "netlink.h" #include "ofpbuf.h" #include "openvswitch/brcompat-netlink.h" +#include "ovsdb-idl.h" #include "packets.h" #include "poll-loop.h" #include "process.h" @@ -54,6 +54,7 @@ #include "timeval.h" #include "unixctl.h" #include "util.h" +#include "vswitchd/vswitch-idl.h" #include "vlog.h" #define THIS_MODULE VLM_brcompatd @@ -69,7 +70,7 @@ enum bmc_action { BMC_DEL_PORT }; -static void parse_options(int argc, char *argv[]); +static const char *parse_options(int argc, char *argv[]); static void usage(void) NO_RETURN; static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 60); @@ -82,9 +83,6 @@ static int lock_timeout = 500; * no longer exist. If set to zero, ports are never pruned. */ static int prune_timeout = 5000; -/* Config file shared with ovs-vswitchd (usually ovs-vswitchd.conf). */ -static char *config_file; - /* Shell command to execute (via popen()) to send a control command to the * running ovs-vswitchd process. The string must contain one instance of %s, * which is replaced by the control command. */ @@ -173,10 +171,18 @@ static const struct nl_policy brc_dp_policy[] = { [BRC_GENL_A_DP_NAME] = { .type = NL_A_STRING }, }; -static bool -bridge_exists(const char *name) +static struct ovsrec_bridge * +find_bridge(const struct ovsrec_open_vswitch *ovs, const char *br_name) { - return cfg_has_section("bridge.%s", name); + size_t i; + + for (i = 0; i < ovs->n_bridges; i++) { + if (!strcmp(br_name, ovs->bridges[i]->name)) { + return ovs->bridges[i]; + } + } + + return NULL; } static int @@ -221,52 +227,31 @@ execute_appctl_command(const char *unixctl_command, char **output) return error; } -static int -rewrite_and_reload_config(void) -{ - if (cfg_is_dirty()) { - int error1 = cfg_write(); - int error2 = cfg_read(); - long long int reload_start = time_msec(); - int error3 = execute_appctl_command("vswitchd/reload", NULL); - long long int elapsed = time_msec() - reload_start; - COVERAGE_INC(brcompatd_reload); - if (elapsed > 0) { - VLOG_INFO("reload command executed in %lld ms", elapsed); - } - return error1 ? error1 : error2 ? error2 : error3; - } - return 0; -} - static void -do_get_bridge_parts(const char *bridge, struct svec *parts, int vlan, - bool break_down_bonds) +do_get_bridge_parts(const struct ovsrec_bridge *br, struct svec *parts, + int vlan, bool break_down_bonds) { struct svec ports; - int i; + size_t i, j; svec_init(&ports); - cfg_get_all_keys(&ports, "bridge.%s.port", bridge); - for (i = 0; i < ports.n; i++) { - const char *port_name = ports.names[i]; + for (i = 0; i < br->n_ports; i++) { + const struct ovsrec_port *port = br->ports[i]; + + svec_add(&ports, port->name); if (vlan >= 0) { - int port_vlan = cfg_get_vlan(0, "vlan.%s.tag", port_name); - if (port_vlan < 0) { - port_vlan = 0; - } + int port_vlan = port->n_tag ? *port->tag : 0; if (vlan != port_vlan) { continue; } } - if (break_down_bonds && cfg_has_section("bonding.%s", port_name)) { - struct svec slaves; - svec_init(&slaves); - cfg_get_all_keys(&slaves, "bonding.%s.slave", port_name); - svec_append(parts, &slaves); - svec_destroy(&slaves); + if (break_down_bonds) { + for (j = 0; j < port->n_interfaces; j++) { + const struct ovsrec_interface *iface = port->interfaces[j]; + svec_add(parts, iface->name); + } } else { - svec_add(parts, port_name); + svec_add(parts, port->name); } } svec_destroy(&ports); @@ -280,9 +265,10 @@ do_get_bridge_parts(const char *bridge, struct svec *parts, int vlan, * reported. If 'vlan' > 0, only interfaces with implicit VLAN 'vlan' are * reported. */ static void -get_bridge_ifaces(const char *bridge, struct svec *ifaces, int vlan) +get_bridge_ifaces(const struct ovsrec_bridge *br, struct svec *ifaces, + int vlan) { - do_get_bridge_parts(bridge, ifaces, vlan, true); + do_get_bridge_parts(br, ifaces, vlan, true); } /* Add all the ports for 'bridge' to 'ports'. Bonded ports are reported under @@ -292,11 +278,13 @@ get_bridge_ifaces(const char *bridge, struct svec *ifaces, int vlan) * only trunk ports or ports with implicit VLAN 0 are reported. If 'vlan' > 0, * only port with implicit VLAN 'vlan' are reported. */ static void -get_bridge_ports(const char *bridge, struct svec *ports, int vlan) +get_bridge_ports(const struct ovsrec_bridge *br, struct svec *ports, + int vlan) { - do_get_bridge_parts(bridge, ports, vlan, false); + do_get_bridge_parts(br, ports, vlan, false); } +#if 0 /* Go through the configuration file and remove any ports that no longer * exist associated with a bridge. */ static void @@ -349,48 +337,181 @@ prune_ports(void) cfg_del_match("bridge.*.port=%s", delete.names[i]); cfg_del_match("bonding.*.slave=%s", delete.names[i]); } - rewrite_and_reload_config(); + reload_config(); cfg_unlock(); } else { cfg_unlock(); } svec_destroy(&delete); } +#endif + +static struct ovsdb_idl_txn * +txn_from_openvswitch(const struct ovsrec_open_vswitch *ovs) +{ + return ovsdb_idl_txn_get(&ovs->header_); +} + +static bool +port_is_fake_bridge(const struct ovsrec_port *port) +{ + return (port->fake_bridge + && port->tag + && *port->tag >= 1 && *port->tag <= 4095); +} + +static void +ovs_insert_bridge(const struct ovsrec_open_vswitch *ovs, + struct ovsrec_bridge *bridge) +{ + struct ovsrec_bridge **bridges; + size_t i; + + bridges = xmalloc(sizeof *ovs->bridges * (ovs->n_bridges + 1)); + for (i = 0; i < ovs->n_bridges; i++) { + bridges[i] = ovs->bridges[i]; + } + bridges[ovs->n_bridges] = bridge; + ovsrec_open_vswitch_set_bridges(ovs, bridges, ovs->n_bridges + 1); + free(bridges); +} static int -add_bridge(const char *br_name) +add_bridge(const struct ovsrec_open_vswitch *ovs, const char *br_name) { - if (bridge_exists(br_name)) { + struct ovsrec_bridge *br; + struct ovsrec_port *port; + struct ovsrec_interface *iface; + + if (find_bridge(ovs, br_name)) { VLOG_WARN("addbr %s: bridge %s exists", br_name, br_name); return EEXIST; } else if (netdev_exists(br_name)) { - if (cfg_get_bool(0, "iface.%s.fake-bridge", br_name)) { - VLOG_WARN("addbr %s: %s exists as a fake bridge", - br_name, br_name); - return 0; - } else { - VLOG_WARN("addbr %s: cannot create bridge %s because a network " - "device named %s already exists", - br_name, br_name, br_name); - return EEXIST; + size_t i; + + for (i = 0; i < ovs->n_bridges; i++) { + size_t j; + struct ovsrec_bridge *br_cfg = ovs->bridges[i]; + + for (j = 0; j < br_cfg->n_ports; j++) { + if (port_is_fake_bridge(br_cfg->ports[j])) { + VLOG_WARN("addbr %s: %s exists as a fake bridge", + br_name, br_name); + return 0; + } + } } + + VLOG_WARN("addbr %s: cannot create bridge %s because a network " + "device named %s already exists", + br_name, br_name, br_name); + return EEXIST; } - cfg_add_entry("bridge.%s.port=%s", br_name, br_name); + iface = ovsrec_interface_insert(txn_from_openvswitch(ovs)); + ovsrec_interface_set_name(iface, br_name); + + port = ovsrec_port_insert(txn_from_openvswitch(ovs)); + ovsrec_port_set_name(port, br_name); + ovsrec_port_set_interfaces(port, &iface, 1); + + br = ovsrec_bridge_insert(txn_from_openvswitch(ovs)); + ovsrec_bridge_set_name(br, br_name); + ovsrec_bridge_set_ports(br, &port, 1); + + ovs_insert_bridge(ovs, br); + VLOG_INFO("addbr %s: success", br_name); return 0; } +static void +add_port(const struct ovsrec_open_vswitch *ovs, + const struct ovsrec_bridge *br, const char *port_name) +{ + struct ovsrec_interface *iface; + struct ovsrec_port *port; + struct ovsrec_port **ports; + size_t i; + + /* xxx Check conflicts? */ + iface = ovsrec_interface_insert(txn_from_openvswitch(ovs)); + ovsrec_interface_set_name(iface, port_name); + + port = ovsrec_port_insert(txn_from_openvswitch(ovs)); + ovsrec_port_set_name(port, port_name); + ovsrec_port_set_interfaces(port, &iface, 1); + + ports = xmalloc(sizeof *br->ports * (br->n_ports + 1)); + for (i = 0; i < br->n_ports; i++) { + ports[i] = br->ports[i]; + } + ports[br->n_ports] = port; + ovsrec_bridge_set_ports(br, ports, br->n_ports + 1); + free(ports); +} + +static void +del_port(const struct ovsrec_bridge *br, const char *port_name) +{ + size_t i, j; + struct ovsrec_port *port_rec = NULL; + + for (i = 0; i < br->n_ports; i++) { + struct ovsrec_port *port = br->ports[i]; + if (!strcmp(port_name, port->name)) { + port_rec = port; + } + for (j = 0; j < port->n_interfaces; j++) { + struct ovsrec_interface *iface = port->interfaces[j]; + if (!strcmp(port_name, iface->name)) { + ovsrec_interface_delete(iface); + } + } + } + + /* xxx Probably can move this into the "for" loop. */ + if (port_rec) { + struct ovsrec_port **ports; + size_t n; + + ports = xmalloc(sizeof *br->ports * br->n_ports); + for (i = n = 0; i < br->n_ports; i++) { + if (br->ports[i] != port_rec) { + ports[n++] = br->ports[i]; + } + } + ovsrec_bridge_set_ports(br, ports, n); + free(ports); + } +} + static int -del_bridge(const char *br_name) +del_bridge(const struct ovsrec_open_vswitch *ovs, const char *br_name) { - if (!bridge_exists(br_name)) { + struct ovsrec_bridge *br = find_bridge(ovs, br_name); + struct ovsrec_bridge **bridges; + size_t i, n; + + if (!br) { VLOG_WARN("delbr %s: no bridge named %s", br_name, br_name); return ENXIO; } - cfg_del_section("bridge.%s", br_name); + del_port(br, br_name); + + ovsrec_bridge_delete(br); + + bridges = xmalloc(sizeof *ovs->bridges * ovs->n_bridges); + for (i = n = 0; i < ovs->n_bridges; i++) { + if (ovs->bridges[i] != br) { + bridges[n++] = ovs->bridges[i]; + } + } + ovsrec_open_vswitch_set_bridges(ovs, bridges, n); + free(bridges); + VLOG_INFO("delbr %s: success", br_name); return 0; @@ -468,7 +589,8 @@ send_simple_reply(uint32_t seq, int error) } static int -handle_bridge_cmd(struct ofpbuf *buffer, bool add) +handle_bridge_cmd(const struct ovsrec_open_vswitch *ovs, + struct ofpbuf *buffer, bool add) { const char *br_name; uint32_t seq; @@ -476,10 +598,7 @@ handle_bridge_cmd(struct ofpbuf *buffer, bool add) error = parse_command(buffer, &seq, &br_name, NULL, NULL, NULL); if (!error) { - error = add ? add_bridge(br_name) : del_bridge(br_name); - if (!error) { - error = rewrite_and_reload_config(); - } + error = add ? add_bridge(ovs, br_name) : del_bridge(ovs, br_name); send_simple_reply(seq, error); } return error; @@ -490,16 +609,9 @@ static const struct nl_policy brc_port_policy[] = { [BRC_GENL_A_PORT_NAME] = { .type = NL_A_STRING }, }; -static void -del_port(const char *br_name, const char *port_name) -{ - cfg_del_entry("bridge.%s.port=%s", br_name, port_name); - cfg_del_match("bonding.*.slave=%s", port_name); - cfg_del_match("vlan.%s.[!0-9]*", port_name); -} - static int -handle_port_cmd(struct ofpbuf *buffer, bool add) +handle_port_cmd(const struct ovsrec_open_vswitch *ovs, + struct ofpbuf *buffer, bool add) { const char *cmd_name = add ? "add-if" : "del-if"; const char *br_name, *port_name; @@ -508,7 +620,9 @@ handle_port_cmd(struct ofpbuf *buffer, bool add) error = parse_command(buffer, &seq, &br_name, &port_name, NULL, NULL); if (!error) { - if (!bridge_exists(br_name)) { + struct ovsrec_bridge *br = find_bridge(ovs, br_name); + + if (!br) { VLOG_WARN("%s %s %s: no bridge named %s", cmd_name, br_name, port_name, br_name); error = EINVAL; @@ -518,12 +632,11 @@ handle_port_cmd(struct ofpbuf *buffer, bool add) error = EINVAL; } else { if (add) { - cfg_add_entry("bridge.%s.port=%s", br_name, port_name); + add_port(ovs, br, port_name); } else { - del_port(br_name, port_name); + del_port(br, port_name); } VLOG_INFO("%s %s %s: success", cmd_name, br_name, port_name); - error = rewrite_and_reload_config(); } send_simple_reply(seq, error); } @@ -531,56 +644,47 @@ handle_port_cmd(struct ofpbuf *buffer, bool add) return error; } -/* Returns the name of the bridge that contains a port named 'port_name', as a - * malloc'd string that the caller must free, or a null pointer if no bridge - * contains a port named 'port_name'. */ -static char * -get_bridge_containing_port(const char *port_name) -{ - struct svec matches; - const char *start, *end; - - svec_init(&matches); - cfg_get_matches(&matches, "bridge.*.port=%s", port_name); - if (!matches.n) { - return 0; - } - - start = matches.names[0] + strlen("bridge."); - end = strstr(start, ".port="); - assert(end); - return xmemdup0(start, end - start); -} - +/* The caller is responsible for freeing '*ovs_name' if the call is + * successful. */ static int -linux_bridge_to_ovs_bridge(const char *linux_bridge, - char **ovs_bridge, int *br_vlan) +linux_bridge_to_ovs_bridge(const struct ovsrec_open_vswitch *ovs, + const char *linux_name, + const struct ovsrec_bridge **ovs_bridge, + int *br_vlan) { - if (bridge_exists(linux_bridge)) { + *ovs_bridge = find_bridge(ovs, linux_name); + if (*ovs_bridge) { /* Bridge name is the same. We are interested in VLAN 0. */ - *ovs_bridge = xstrdup(linux_bridge); *br_vlan = 0; return 0; } else { - /* No such Open vSwitch bridge 'linux_bridge', but there might be an - * internal port named 'linux_bridge' on some other bridge + /* No such Open vSwitch bridge 'linux_name', but there might be an + * internal port named 'linux_name' on some other bridge * 'ovs_bridge'. If so then we are interested in the VLAN assigned to - * port 'linux_bridge' on the bridge named 'ovs_bridge'. */ - const char *port_name = linux_bridge; + * port 'linux_name' on the bridge named 'ovs_bridge'. */ + size_t i, j; + + for (i = 0; i < ovs->n_bridges; i++) { + const struct ovsrec_bridge *br = ovs->bridges[i]; + + for (j = 0; j < br->n_ports; j++) { + const struct ovsrec_port *port = br->ports[j]; + + if (!strcmp(port->name, linux_name)) { + *ovs_bridge = br; + *br_vlan = port->n_tag ? *port->tag : -1; + return 0; + } + } - *ovs_bridge = get_bridge_containing_port(port_name); - *br_vlan = cfg_get_vlan(0, "vlan.%s.tag", port_name); - if (*ovs_bridge && *br_vlan >= 0) { - return 0; - } else { - free(*ovs_bridge); - return ENODEV; } + return ENODEV; } } static int -handle_fdb_query_cmd(struct ofpbuf *buffer) +handle_fdb_query_cmd(const struct ovsrec_open_vswitch *ovs, + struct ofpbuf *buffer) { /* This structure is copied directly from the Linux 2.6.30 header files. * It would be more straightforward to #include , but @@ -608,8 +712,8 @@ handle_fdb_query_cmd(struct ofpbuf *buffer) * vswitchd can deal with all the VLANs on a single bridge. We have to * pretend that the former is the case even though the latter is the * implementation. */ - const char *linux_bridge; /* Name used by brctl. */ - char *ovs_bridge; /* Name used by ovs-vswitchd. */ + const char *linux_name; /* Name used by brctl. */ + const struct ovsrec_bridge *ovs_bridge; /* Bridge used by ovs-vswitchd. */ int br_vlan; /* VLAN tag. */ struct svec ifaces; @@ -623,25 +727,24 @@ handle_fdb_query_cmd(struct ofpbuf *buffer) int error; /* Parse the command received from brcompat_mod. */ - error = parse_command(buffer, &seq, &linux_bridge, NULL, &count, &skip); + error = parse_command(buffer, &seq, &linux_name, NULL, &count, &skip); if (error) { return error; } /* Figure out vswitchd bridge and VLAN. */ - cfg_read(); - error = linux_bridge_to_ovs_bridge(linux_bridge, &ovs_bridge, &br_vlan); + error = linux_bridge_to_ovs_bridge(ovs, linux_name, + &ovs_bridge, &br_vlan); if (error) { send_simple_reply(seq, error); return error; } /* Fetch the forwarding database using ovs-appctl. */ - unixctl_command = xasprintf("fdb/show %s", ovs_bridge); + unixctl_command = xasprintf("fdb/show %s", ovs_bridge->name); error = execute_appctl_command(unixctl_command, &output); free(unixctl_command); if (error) { - free(ovs_bridge); send_simple_reply(seq, error); return error; } @@ -730,7 +833,6 @@ handle_fdb_query_cmd(struct ofpbuf *buffer) /* Free memory. */ ofpbuf_uninit(&query_data); - free(ovs_bridge); return 0; } @@ -769,11 +871,11 @@ send_ifindex_reply(uint32_t seq, struct svec *ifaces) } static int -handle_get_bridges_cmd(struct ofpbuf *buffer) +handle_get_bridges_cmd(const struct ovsrec_open_vswitch *ovs, + struct ofpbuf *buffer) { struct svec bridges; - const char *br_name; - size_t i; + size_t i, j; uint32_t seq; @@ -789,22 +891,18 @@ handle_get_bridges_cmd(struct ofpbuf *buffer) } /* Get all the real bridges and all the fake ones. */ - cfg_read(); svec_init(&bridges); - cfg_get_subsections(&bridges, "bridge"); - SVEC_FOR_EACH (i, br_name, &bridges) { - const char *iface_name; - struct svec ifaces; - size_t j; + for (i = 0; i < ovs->n_bridges; i++) { + const struct ovsrec_bridge *br = ovs->bridges[i]; - svec_init(&ifaces); - get_bridge_ifaces(br_name, &ifaces, -1); - SVEC_FOR_EACH (j, iface_name, &ifaces) { - if (cfg_get_bool(0, "iface.%s.fake-bridge", iface_name)) { - svec_add(&bridges, iface_name); + svec_add(&bridges, br->name); + for (j = 0; j < br->n_ports; j++) { + const struct ovsrec_port *port = br->ports[j]; + + if (port->fake_bridge) { + svec_add(&bridges, port->name); } } - svec_destroy(&ifaces); } send_ifindex_reply(seq, &bridges); @@ -814,12 +912,13 @@ handle_get_bridges_cmd(struct ofpbuf *buffer) } static int -handle_get_ports_cmd(struct ofpbuf *buffer) +handle_get_ports_cmd(const struct ovsrec_open_vswitch *ovs, + struct ofpbuf *buffer) { uint32_t seq; - const char *linux_bridge; - char *ovs_bridge; + const char *linux_name; + const struct ovsrec_bridge *ovs_bridge; int br_vlan; struct svec ports; @@ -827,13 +926,13 @@ handle_get_ports_cmd(struct ofpbuf *buffer) int error; /* Parse Netlink command. */ - error = parse_command(buffer, &seq, &linux_bridge, NULL, NULL, NULL); + error = parse_command(buffer, &seq, &linux_name, NULL, NULL, NULL); if (error) { return error; } - cfg_read(); - error = linux_bridge_to_ovs_bridge(linux_bridge, &ovs_bridge, &br_vlan); + error = linux_bridge_to_ovs_bridge(ovs, linux_name, + &ovs_bridge, &br_vlan); if (error) { send_simple_reply(seq, error); return error; @@ -842,17 +941,15 @@ handle_get_ports_cmd(struct ofpbuf *buffer) svec_init(&ports); get_bridge_ports(ovs_bridge, &ports, br_vlan); svec_sort(&ports); - svec_del(&ports, linux_bridge); + svec_del(&ports, linux_name); send_ifindex_reply(seq, &ports); /* XXX bonds won't show up */ svec_destroy(&ports); - free(ovs_bridge); - return 0; } -static int -brc_recv_update(void) +static void +brc_recv_update(const struct ovsrec_open_vswitch *ovs) { int retval; struct ofpbuf *buffer; @@ -871,7 +968,7 @@ brc_recv_update(void) if (retval != EAGAIN) { VLOG_WARN_RL(&rl, "brc_recv_update: %s", strerror(retval)); } - return retval; + return; } genlmsghdr = nl_msg_genlmsghdr(buffer); @@ -886,52 +983,47 @@ brc_recv_update(void) goto error; } - if (cfg_lock(NULL, lock_timeout)) { - /* Couldn't lock config file. */ - retval = EAGAIN; - goto error; - } - switch (genlmsghdr->cmd) { case BRC_GENL_C_DP_ADD: - retval = handle_bridge_cmd(buffer, true); + handle_bridge_cmd(ovs, buffer, true); break; case BRC_GENL_C_DP_DEL: - retval = handle_bridge_cmd(buffer, false); + handle_bridge_cmd(ovs, buffer, false); break; case BRC_GENL_C_PORT_ADD: - retval = handle_port_cmd(buffer, true); + handle_port_cmd(ovs, buffer, true); break; case BRC_GENL_C_PORT_DEL: - retval = handle_port_cmd(buffer, false); + handle_port_cmd(ovs, buffer, false); break; case BRC_GENL_C_FDB_QUERY: - retval = handle_fdb_query_cmd(buffer); + handle_fdb_query_cmd(ovs, buffer); break; case BRC_GENL_C_GET_BRIDGES: - retval = handle_get_bridges_cmd(buffer); + handle_get_bridges_cmd(ovs, buffer); break; case BRC_GENL_C_GET_PORTS: - retval = handle_get_ports_cmd(buffer); + handle_get_ports_cmd(ovs, buffer); break; default: - retval = EPROTO; + VLOG_WARN_RL(&rl, "received unknown brc netlink command: %d\n", + genlmsghdr->cmd); + break; } - cfg_unlock(); - error: ofpbuf_delete(buffer); - return retval; + return; } +#if 0 /* Check for interface configuration changes announced through RTNL. */ static void rtnl_recv_update(void) @@ -995,7 +1087,6 @@ rtnl_recv_update(void) svec_sort(&ports); if (svec_contains(&ports, port_name)) { del_port(br_name, port_name); - rewrite_and_reload_config(); } svec_destroy(&ports); } else { @@ -1049,18 +1140,25 @@ rtnl_recv_update(void) ofpbuf_delete(buf); } } +#endif int main(int argc, char *argv[]) { struct unixctl_server *unixctl; + const char *remote; + struct ovsdb_idl *idl; + unsigned int idl_seqno; int retval; set_program_name(argv[0]); register_fault_handlers(); time_init(); vlog_init(); - parse_options(argc, argv); + vlog_set_levels(VLM_ANY_MODULE, VLF_CONSOLE, VLL_WARN); + vlog_set_levels(VLM_reconnect, VLF_ANY_FACILITY, VLL_WARN); + + remote = parse_options(argc, argv); signal(SIGPIPE, SIG_IGN); process_init(); @@ -1083,16 +1181,42 @@ main(int argc, char *argv[]) } } - retval = cfg_read(); - if (retval) { - ovs_fatal(retval, "could not read config file"); - } + idl = ovsdb_idl_create(remote, &ovsrec_idl_class); + idl_seqno = ovsdb_idl_get_seqno(idl); for (;;) { + const struct ovsrec_open_vswitch *ovs; + struct ovsdb_idl_txn *txn; + int status; + unsigned int new_idl_seqno; + + ovsdb_idl_run(idl); + + /* xxx Complete hack to get around bad ovs! */ + new_idl_seqno = ovsdb_idl_get_seqno(idl); + if (new_idl_seqno == idl_seqno) { + ovsdb_idl_wait(idl); + poll_block(); + printf("xxx trying again...\n"); + idl_seqno = new_idl_seqno; + continue; + } + + ovs = ovsrec_open_vswitch_first(idl); + if (!ovs) { + /* XXX it would be more user-friendly to create a record ourselves + * (while verifying that the table is empty before doing so). */ + ovs_fatal(0, "%s: database does not contain any Open vSwitch " + "configuration", remote); + } + + txn = ovsdb_idl_txn_create(idl); + unixctl_server_run(unixctl); - brc_recv_update(); + brc_recv_update(ovs); netdev_run(); +#if 0 /* If 'prune_timeout' is non-zero, we actively prune from the * config file any 'bridge..port' entries that are no * longer valid. We use two methods: @@ -1103,20 +1227,56 @@ main(int argc, char *argv[]) * 2) We periodically check all ports associated with bridges * to see if they no longer exist. */ - /*if (prune_timeout) { + if (prune_timeout) { rtnl_recv_update(); prune_ports(); nl_sock_wait(rtnl_sock, POLLIN); poll_timer_wait(prune_timeout); - }*/ + } +#endif + + while ((status = ovsdb_idl_txn_commit(txn)) == TXN_INCOMPLETE) { + ovsdb_idl_run(idl); + ovsdb_idl_wait(idl); + ovsdb_idl_txn_wait(txn); + poll_block(); + } + ovsdb_idl_txn_destroy(txn); + + switch (status) { + case TXN_INCOMPLETE: + NOT_REACHED(); + + case TXN_ABORTED: + /* Should not happen--we never call ovsdb_idl_txn_abort(). */ + ovs_fatal(0, "transaction aborted"); + + case TXN_SUCCESS: + break; + + case TXN_TRY_AGAIN: + /* xxx Handle this better! */ + printf("xxx We need to try again!\n"); + break; + + case TXN_ERROR: + /* xxx Is this what we want to do? */ + ovs_fatal(0, "transaction error"); + + default: + NOT_REACHED(); + } nl_sock_wait(brc_sock, POLLIN); + ovsdb_idl_wait(idl); unixctl_server_wait(unixctl); netdev_wait(); poll_block(); } + ovsdb_idl_destroy(idl); + return 0; } @@ -1141,7 +1301,7 @@ validate_appctl_command(void) } } -static void +static const char * parse_options(int argc, char *argv[]) { enum { @@ -1163,7 +1323,6 @@ parse_options(int argc, char *argv[]) {0, 0, 0, 0}, }; char *short_options = long_options_to_short_options(long_options); - int error; appctl_command = xasprintf("%s/ovs-appctl %%s", ovs_bindir); for (;;) { @@ -1214,17 +1373,11 @@ parse_options(int argc, char *argv[]) argv += optind; if (argc != 1) { - ovs_fatal(0, "exactly one non-option argument required; " + ovs_fatal(0, "database socket is non-option argument; " "use --help for usage"); } - cfg_init(); - config_file = argv[0]; - error = cfg_set_file(config_file); - if (error) { - ovs_fatal(error, "failed to add configuration file \"%s\"", - config_file); - } + return argv[0]; } static void -- 2.43.0