Date: Thu, 13 Feb 2025 16:46:10 GMT From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: ebc96321e706 - releng/13.5 - icmp: do not store per-VNET identical array of strings Message-ID: <202502131646.51DGkADQ041474@gitrepo.freebsd.org>
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The branch releng/13.5 has been updated by tuexen: URL: https://cgit.FreeBSD.org/src/commit/?id=ebc96321e706ee61f7eafcb77a44695d6faeeb52 commit ebc96321e706ee61f7eafcb77a44695d6faeeb52 Author: Gleb Smirnoff <glebius@FreeBSD.org> AuthorDate: 2024-03-24 16:13:23 +0000 Commit: Michael Tuexen <tuexen@FreeBSD.org> CommitDate: 2025-02-13 13:56:10 +0000 icmp: do not store per-VNET identical array of strings We need per-VNET struct counter_rate, but we don't need per-VNET set of const char *. Also, identical word "response" can go into the format string instead of being stored 7 times. Reviewed by: kp, zlei, tuexen Differential Revision: https://reviews.freebsd.org/D44475 Approved by: re (cperciva) (cherry picked from commit 7142ab4790666022a2a3d85910e9cd8e241d9b87) (cherry picked from commit 0939f3a046533a2df1d2b10fd914c98755dacb0b) --- sys/netinet/ip_icmp.c | 37 ++++++++++++++++++------------------- 1 file changed, 18 insertions(+), 19 deletions(-) diff --git a/sys/netinet/ip_icmp.c b/sys/netinet/ip_icmp.c index f0e63d6c8b1a..54411d55f49c 100644 --- a/sys/netinet/ip_icmp.c +++ b/sys/netinet/ip_icmp.c @@ -1085,28 +1085,26 @@ ip_next_mtu(int mtu, int dir) * the 'final' error, but it doesn't make sense to solve the printing * delay with more complex code. */ -struct icmp_rate { - const char *descr; - struct counter_rate cr; -}; -VNET_DEFINE_STATIC(struct icmp_rate, icmp_rates[BANDLIM_MAX]) = { - { "icmp unreach response" }, - { "icmp ping response" }, - { "icmp tstamp response" }, - { "closed port RST response" }, - { "open port RST response" }, - { "icmp6 unreach response" }, - { "sctp ootb response" } -}; +VNET_DEFINE_STATIC(struct counter_rate, icmp_rates[BANDLIM_MAX]); #define V_icmp_rates VNET(icmp_rates) +static const char *icmp_rate_descrs[BANDLIM_MAX] = { + [BANDLIM_ICMP_UNREACH] = "icmp unreach", + [BANDLIM_ICMP_ECHO] = "icmp ping", + [BANDLIM_ICMP_TSTAMP] = "icmp tstamp", + [BANDLIM_RST_CLOSEDPORT] = "closed port RST", + [BANDLIM_RST_OPENPORT] = "open port RST", + [BANDLIM_ICMP6_UNREACH] = "icmp6 unreach", + [BANDLIM_SCTP_OOTB] = "sctp ootb", +}; + static void icmp_bandlimit_init(void) { for (int i = 0; i < BANDLIM_MAX; i++) { - V_icmp_rates[i].cr.cr_rate = counter_u64_alloc(M_WAITOK); - V_icmp_rates[i].cr.cr_ticks = ticks; + V_icmp_rates[i].cr_rate = counter_u64_alloc(M_WAITOK); + V_icmp_rates[i].cr_ticks = ticks; } } VNET_SYSINIT(icmp_bandlimit, SI_SUB_PROTO_DOMAIN, SI_ORDER_ANY, @@ -1117,7 +1115,7 @@ icmp_bandlimit_uninit(void) { for (int i = 0; i < BANDLIM_MAX; i++) - counter_u64_free(V_icmp_rates[i].cr.cr_rate); + counter_u64_free(V_icmp_rates[i].cr_rate); } VNET_SYSUNINIT(icmp_bandlimit, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, icmp_bandlimit_uninit, NULL); @@ -1136,7 +1134,7 @@ badport_bandlim(int which) if ((V_icmplim + V_icmplim_curr_jitter) <= 0) V_icmplim_curr_jitter = -V_icmplim + 1; - pps = counter_ratecheck(&V_icmp_rates[which].cr, V_icmplim + + pps = counter_ratecheck(&V_icmp_rates[which], V_icmplim + V_icmplim_curr_jitter); if (pps > 0) { /* @@ -1154,8 +1152,9 @@ badport_bandlim(int which) if (pps == -1) return (-1); if (pps > 0 && V_icmplim_output) - log(LOG_NOTICE, "Limiting %s from %jd to %d packets/sec\n", - V_icmp_rates[which].descr, (intmax_t )pps, V_icmplim + + log(LOG_NOTICE, + "Limiting %s response from %jd to %d packets/sec\n", + icmp_rate_descrs[which], (intmax_t )pps, V_icmplim + V_icmplim_curr_jitter); return (0); }
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