routing: improve multiline debug
Add IF_DEBUG_LEVEL() macro to ensure all debug output preparation is run only if the current debug level is sufficient. Consistently use it within routing subsystem. MFC after: 2 weeks
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fe05d1dd0f
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578a99c939
@ -179,13 +179,11 @@ link_nhgrp(struct nh_control *ctl, struct nhgrp_priv *grp_priv)
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NHOPS_WUNLOCK(ctl);
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG2
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{
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char nhgrp_buf[NHOP_PRINT_BUFSIZE];
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nhgrp_print_buf(grp_priv->nhg, nhgrp_buf, sizeof(nhgrp_buf));
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FIB_RH_LOG(LOG_DEBUG2, ctl->ctl_rh, "linked %s", nhgrp_buf);
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IF_DEBUG_LEVEL(LOG_DEBUG2) {
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char nhgrp_buf[NHOP_PRINT_BUFSIZE] __unused;
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FIB_RH_LOG(LOG_DEBUG2, ctl->ctl_rh, "linked %s",
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nhgrp_print_buf(grp_priv->nhg, nhgrp_buf, sizeof(nhgrp_buf)));
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}
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#endif
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consider_resize(ctl, new_num_buckets, new_num_items);
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return (1);
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@ -214,14 +212,13 @@ unlink_nhgrp(struct nh_control *ctl, struct nhgrp_priv *key)
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NHOPS_WUNLOCK(ctl);
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG2
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{
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IF_DEBUG_LEVEL(LOG_DEBUG2) {
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char nhgrp_buf[NHOP_PRINT_BUFSIZE];
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nhgrp_print_buf(nhg_priv_ret->nhg, nhgrp_buf, sizeof(nhgrp_buf));
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FIB_RH_LOG(LOG_DEBUG2, ctl->ctl_rh, "unlinked idx#%d %s", idx,
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nhgrp_buf);
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}
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#endif
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return (nhg_priv_ret);
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}
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@ -340,11 +337,11 @@ nhgrp_ctl_unlink_all(struct nh_control *ctl)
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NHOPS_WLOCK_ASSERT(ctl);
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CHT_SLIST_FOREACH(&ctl->gr_head, mpath, nhg_priv) {
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG
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char nhgbuf[NHOP_PRINT_BUFSIZE];
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FIB_RH_LOG(LOG_DEBUG, ctl->ctl_rh, "marking %s unlinked",
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nhgrp_print_buf(nhg_priv->nhg, nhgbuf, sizeof(nhgbuf)));
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#endif
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IF_DEBUG_LEVEL(LOG_DEBUG2) {
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char nhgbuf[NHOP_PRINT_BUFSIZE] __unused;
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FIB_RH_LOG(LOG_DEBUG2, ctl->ctl_rh, "marking %s unlinked",
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nhgrp_print_buf(nhg_priv->nhg, nhgbuf, sizeof(nhgbuf)));
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}
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refcount_release(&nhg_priv->nhg_linked);
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} CHT_SLIST_FOREACH_END;
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}
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@ -406,12 +406,12 @@ destroy_nhgrp(struct nhgrp_priv *nhg_priv)
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KASSERT((nhg_priv->nhg_refcount == 0), ("nhg_refcount != 0"));
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KASSERT((nhg_priv->nhg_idx == 0), ("gr_idx != 0"));
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG
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char nhgbuf[NHOP_PRINT_BUFSIZE];
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FIB_NH_LOG(LOG_DEBUG, nhg_priv->nhg_nh_weights[0].nh,
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"destroying %s", nhgrp_print_buf(nhg_priv->nhg,
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nhgbuf, sizeof(nhgbuf)));
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#endif
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IF_DEBUG_LEVEL(LOG_DEBUG2) {
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char nhgbuf[NHOP_PRINT_BUFSIZE] __unused;
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FIB_NH_LOG(LOG_DEBUG2, nhg_priv->nhg_nh_weights[0].nh,
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"destroying %s", nhgrp_print_buf(nhg_priv->nhg,
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nhgbuf, sizeof(nhgbuf)));
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}
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free_nhgrp_nhops(nhg_priv);
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destroy_nhgrp_int(nhg_priv);
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@ -534,10 +534,11 @@ finalize_nhop(struct nh_control *ctl, struct nhop_object *nh, bool link)
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return (ENOBUFS);
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}
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG
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char nhbuf[NHOP_PRINT_BUFSIZE];
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FIB_NH_LOG(LOG_DEBUG, nh, "finalized: %s", nhop_print_buf(nh, nhbuf, sizeof(nhbuf)));
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#endif
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IF_DEBUG_LEVEL(LOG_DEBUG) {
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char nhbuf[NHOP_PRINT_BUFSIZE] __unused;
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FIB_NH_LOG(LOG_DEBUG, nh, "finalized: %s",
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nhop_print_buf(nh, nhbuf, sizeof(nhbuf)));
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}
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return (0);
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}
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@ -598,10 +599,11 @@ nhop_free(struct nhop_object *nh)
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return;
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}
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG
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char nhbuf[NHOP_PRINT_BUFSIZE];
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FIB_NH_LOG(LOG_DEBUG, nh, "deleting %s", nhop_print_buf(nh, nhbuf, sizeof(nhbuf)));
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#endif
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IF_DEBUG_LEVEL(LOG_DEBUG) {
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char nhbuf[NHOP_PRINT_BUFSIZE] __unused;
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FIB_NH_LOG(LOG_DEBUG, nh, "deleting %s",
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nhop_print_buf(nh, nhbuf, sizeof(nhbuf)));
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}
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/*
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* There are only 2 places, where nh_linked can be decreased:
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@ -1189,10 +1191,7 @@ nhops_dump_sysctl(struct rib_head *rh, struct sysctl_req *w)
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ctl = rh->nh_control;
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NHOPS_RLOCK(ctl);
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG
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FIB_LOG(LOG_DEBUG, rh->rib_fibnum, rh->rib_family, "dump %u items",
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ctl->nh_head.items_count);
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#endif
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FIB_RH_LOG(LOG_DEBUG, rh, "dump %u items", ctl->nh_head.items_count);
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CHT_SLIST_FOREACH(&ctl->nh_head, nhops, nh_priv) {
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error = dump_nhop_entry(rh, nh_priv->nh, w);
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if (error != 0) {
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@ -609,13 +609,13 @@ rib_copy_route(struct rtentry *rt, const struct route_nhop_data *rnd_src,
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MPASS((nh_src->nh_flags & NHF_MULTIPATH) == 0);
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG2
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IF_DEBUG_LEVEL(LOG_DEBUG2) {
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char nhbuf[NHOP_PRINT_BUFSIZE], rtbuf[NHOP_PRINT_BUFSIZE];
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nhop_print_buf_any(nh_src, nhbuf, sizeof(nhbuf));
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rt_print_buf(rt, rtbuf, sizeof(rtbuf));
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FIB_RH_LOG(LOG_DEBUG2, rh_dst, "copying %s -> %s from fib %u",
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rtbuf, nhbuf, nhop_get_fibnum(nh_src));
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#endif
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}
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struct nhop_object *nh = nhop_alloc(rh_dst->rib_fibnum, rh_dst->rib_family);
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if (nh == NULL) {
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FIB_RH_LOG(LOG_INFO, rh_dst, "unable to allocate new nexthop");
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@ -645,11 +645,12 @@ rib_copy_route(struct rtentry *rt, const struct route_nhop_data *rnd_src,
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error = add_route_flags(rh_dst, rt_new, &rnd, op_flags, rc);
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if (error != 0) {
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG
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char buf[NHOP_PRINT_BUFSIZE];
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rt_print_buf(rt_new, buf, sizeof(buf));
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FIB_RH_LOG(LOG_DEBUG, rh_dst, "Unable to add route %s: error %d", buf, error);
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#endif
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IF_DEBUG_LEVEL(LOG_DEBUG2) {
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char buf[NHOP_PRINT_BUFSIZE];
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rt_print_buf(rt_new, buf, sizeof(buf));
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FIB_RH_LOG(LOG_DEBUG, rh_dst,
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"Unable to add route %s: error %d", buf, error);
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}
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nhop_free(nh);
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rt_free_immediate(rt_new);
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}
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@ -1295,15 +1296,13 @@ change_route_conditional(struct rib_head *rnh, struct rtentry *rt,
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struct rtentry *rt_new;
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int error = 0;
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG2
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{
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IF_DEBUG_LEVEL(LOG_DEBUG2) {
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char buf_old[NHOP_PRINT_BUFSIZE], buf_new[NHOP_PRINT_BUFSIZE];
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nhop_print_buf_any(rnd_orig->rnd_nhop, buf_old, NHOP_PRINT_BUFSIZE);
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nhop_print_buf_any(rnd_new->rnd_nhop, buf_new, NHOP_PRINT_BUFSIZE);
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FIB_LOG(LOG_DEBUG2, rnh->rib_fibnum, rnh->rib_family,
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"trying change %s -> %s", buf_old, buf_new);
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}
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#endif
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RIB_WLOCK(rnh);
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struct route_nhop_data rnd;
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@ -83,6 +83,8 @@
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#define _output printf
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#define _DEBUG_PASS_MSG(_l) (DEBUG_VAR_NAME >= (_l))
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#define IF_DEBUG_LEVEL(_l) if ((DEBUG_MAX_LEVEL >= (_l)) && (__predict_false(DEBUG_VAR_NAME >= (_l))))
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/*
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* Logging for events specific for particular family and fib
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* Example: [nhop_neigh] inet.0 find_lle: nhop nh#4/inet/vtnet0/10.0.0.1: mapped to lle NULL
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@ -155,6 +157,7 @@ struct nhgrp_object;
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struct llentry;
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struct nhop_neigh;
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struct rtentry;
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struct ifnet;
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#define NHOP_PRINT_BUFSIZE 48
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char *nhop_print_buf(const struct nhop_object *nh, char *buf, size_t bufsize);
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@ -261,27 +261,33 @@ rib_lookup(uint32_t fibnum, const struct sockaddr *dst, uint32_t flags,
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#ifdef ROUTE_MPATH
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static void
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notify_add(struct rib_cmd_info *rc, const struct weightened_nhop *wn_src,
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route_notification_t *cb, void *cbdata) {
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route_notification_t *cb, void *cbdata)
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{
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rc->rc_nh_new = wn_src->nh;
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rc->rc_nh_weight = wn_src->weight;
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG2
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char nhbuf[NHOP_PRINT_BUFSIZE];
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FIB_NH_LOG(LOG_DEBUG2, wn_src->nh, "RTM_ADD for %s @ w=%u",
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nhop_print_buf(wn_src->nh, nhbuf, sizeof(nhbuf)), wn_src->weight);
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#endif
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IF_DEBUG_LEVEL(LOG_DEBUG2) {
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char nhbuf[NHOP_PRINT_BUFSIZE] __unused;
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FIB_NH_LOG(LOG_DEBUG2, wn_src->nh, "RTM_ADD for %s @ w=%u",
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nhop_print_buf(wn_src->nh, nhbuf, sizeof(nhbuf)),
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wn_src->weight);
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}
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cb(rc, cbdata);
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}
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static void
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notify_del(struct rib_cmd_info *rc, const struct weightened_nhop *wn_src,
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route_notification_t *cb, void *cbdata) {
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route_notification_t *cb, void *cbdata)
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{
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rc->rc_nh_old = wn_src->nh;
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rc->rc_nh_weight = wn_src->weight;
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG2
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char nhbuf[NHOP_PRINT_BUFSIZE];
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FIB_NH_LOG(LOG_DEBUG2, wn_src->nh, "RTM_DEL for %s @ w=%u",
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nhop_print_buf(wn_src->nh, nhbuf, sizeof(nhbuf)), wn_src->weight);
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#endif
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IF_DEBUG_LEVEL(LOG_DEBUG2) {
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char nhbuf[NHOP_PRINT_BUFSIZE] __unused;
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FIB_NH_LOG(LOG_DEBUG2, wn_src->nh, "RTM_DEL for %s @ w=%u",
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nhop_print_buf(wn_src->nh, nhbuf, sizeof(nhbuf)),
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wn_src->weight);
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}
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cb(rc, cbdata);
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}
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@ -313,14 +319,12 @@ decompose_change_notification(struct rib_cmd_info *rc, route_notification_t *cb,
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wn_new = &tmp;
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num_new = 1;
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}
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#if DEBUG_MAX_LEVEL >= LOG_DEBUG
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{
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IF_DEBUG_LEVEL(LOG_DEBUG) {
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char buf_old[NHOP_PRINT_BUFSIZE], buf_new[NHOP_PRINT_BUFSIZE];
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nhop_print_buf_any(rc->rc_nh_old, buf_old, NHOP_PRINT_BUFSIZE);
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nhop_print_buf_any(rc->rc_nh_new, buf_new, NHOP_PRINT_BUFSIZE);
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FIB_NH_LOG(LOG_DEBUG, wn_old[0].nh, "change %s -> %s", buf_old, buf_new);
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}
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#endif
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/* Use the fact that each @wn array is sorted */
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/*
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