{"id":2219828,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2219828/?format=json","web_url":"http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260404153439.30077-2-ja@ssi.bg/","project":{"id":26,"url":"http://patchwork.ozlabs.org/api/1.2/projects/26/?format=json","name":"Netfilter Development","link_name":"netfilter-devel","list_id":"netfilter-devel.vger.kernel.org","list_email":"netfilter-devel@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260404153439.30077-2-ja@ssi.bg>","list_archive_url":null,"date":"2026-04-04T15:34:37","name":"[PATCHv2,nf-next,1/3] ipvs: show the current conn_tab size to users","commit_ref":null,"pull_url":null,"state":"under-review","archived":false,"hash":"c8cc5b4a696e2f9667672b2c4c2d4e70c8d67c89","submitter":{"id":2825,"url":"http://patchwork.ozlabs.org/api/1.2/people/2825/?format=json","name":"Julian Anastasov","email":"ja@ssi.bg"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260404153439.30077-2-ja@ssi.bg/mbox/","series":[{"id":498737,"url":"http://patchwork.ozlabs.org/api/1.2/series/498737/?format=json","web_url":"http://patchwork.ozlabs.org/project/netfilter-devel/list/?series=498737","date":"2026-04-04T15:34:36","name":"IPVS changes, part 4 of 4 - extras","version":1,"mbox":"http://patchwork.ozlabs.org/series/498737/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2219828/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2219828/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","netfilter-devel@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (4096-bit key;\n unprotected) header.d=ssi.bg header.i=@ssi.bg header.a=rsa-sha256\n header.s=ssi header.b=HCWo/3yR;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; 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d=ssi.bg; h=cc:cc\n\t:content-transfer-encoding:date:from:from:in-reply-to:message-id\n\t:mime-version:references:reply-to:subject:subject:to:to; s=ssi;\n\t bh=MzHtgV0/e4YGyhfcr3shqQby3NCBMZ1kKCFQAr0/Ecg=; b=HCWo/3yREmrI\n\tDN3GYrs1eEG5LbdvRNcGDqyjp7vgCIFV81zjl+Yn1zrTNiWgyJzbVMiYbei3H3uL\n\tLpNFoLR0CCJyNkez6NPXqhNBkIWKXXs6+8Ip6T6NxYPTSV/5FGk/OMRf8+RlyocC\n\tAtAI3zyUuVHWDls0SvaSAc2bEZ6QDhm4Bln6dL0h44FhhsQQxBEvrnmLjeSEO2LJ\n\tlsjGeBQpsdJyy0uG6J+6jEDDJfHcMrOy83b5Ogb/sW39+/V4ouXYaOsuvnxdwNUv\n\tkdeAZVdAC/xyOnbTQT6kPQnWqZkRhStFPxe2R8gaHXjIts0DVwxan40mOYMHNLoN\n\tOZ8Zdg3gi73oV7cwY/+Zz+mkz+Yiq/p4/hhR1v7L8Nzs2aFfQK1f+9IX5kwRDTXw\n\ttNfZ+PmDmbBS2xMHufuIuE9mvisAPbXmVFa+t2+/JWIyqePaTCMGWuXdWGl0+VVg\n\tXsRxXft9xUhPTdJCQON1NUkbQGUSme3eLY4oXA3Atxq7LmAFoFqywXeFJZFxi4wG\n\tMiuALsRUSLSH2G1XbvcEdpfbBY74Sq3LyxQ+nb2/O5SBVl6pn2K6wrJ5oPZui4nc\n\t68Z2xKZeqf7dT73SVuNAoYorkBbhDLPt8wCXkrjrttrQ5yumpNzumbiWeRO5M+kt\n\tU/PJOD1yT3uHdHKXMrC6iZbGJIOAnEI=","From":"Julian Anastasov ","To":"Simon Horman ","Cc":"Pablo Neira Ayuso , Florian Westphal ,\n lvs-devel@vger.kernel.org, netfilter-devel@vger.kernel.org,\n Dust Li ,\n Jiejian Wu ","Subject":"[PATCHv2 nf-next 1/3] ipvs: show the current conn_tab size to users","Date":"Sat, 4 Apr 2026 18:34:37 +0300","Message-ID":"<20260404153439.30077-2-ja@ssi.bg>","X-Mailer":"git-send-email 2.53.0","In-Reply-To":"<20260404153439.30077-1-ja@ssi.bg>","References":"<20260404153439.30077-1-ja@ssi.bg>","Precedence":"bulk","X-Mailing-List":"netfilter-devel@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit"},"content":"As conn_tab is per-net, better to show the current hash table size\nto users instead of the ip_vs_conn_tab_size (max).\n\nSigned-off-by: Julian Anastasov \n---\n net/netfilter/ipvs/ip_vs_ctl.c | 26 ++++++++++++++++++++++----\n 1 file changed, 22 insertions(+), 4 deletions(-)","diff":"diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c\nindex b472e564b769..d06d710dac83 100644\n--- a/net/netfilter/ipvs/ip_vs_ctl.c\n+++ b/net/netfilter/ipvs/ip_vs_ctl.c\n@@ -281,6 +281,20 @@ static void est_reload_work_handler(struct work_struct *work)\n \tmutex_unlock(&ipvs->est_mutex);\n }\n \n+static int get_conn_tab_size(struct netns_ipvs *ipvs)\n+{\n+\tconst struct ip_vs_rht *t;\n+\tint size = 0;\n+\n+\trcu_read_lock();\n+\tt = rcu_dereference(ipvs->conn_tab);\n+\tif (t)\n+\t\tsize = t->size;\n+\trcu_read_unlock();\n+\n+\treturn size;\n+}\n+\n int\n ip_vs_use_count_inc(void)\n {\n@@ -2742,10 +2756,13 @@ static void ip_vs_info_seq_stop(struct seq_file *seq, void *v)\n \n static int ip_vs_info_seq_show(struct seq_file *seq, void *v)\n {\n+\tstruct net *net = seq_file_net(seq);\n+\tstruct netns_ipvs *ipvs = net_ipvs(net);\n+\n \tif (v == SEQ_START_TOKEN) {\n \t\tseq_printf(seq,\n \t\t\t\"IP Virtual Server version %d.%d.%d (size=%d)\\n\",\n-\t\t\tNVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size);\n+\t\t\tNVERSION(IP_VS_VERSION_CODE), get_conn_tab_size(ipvs));\n \t\tseq_puts(seq,\n \t\t\t \"Prot LocalAddress:Port Scheduler Flags\\n\");\n \t\tseq_puts(seq,\n@@ -3426,7 +3443,7 @@ do_ip_vs_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)\n \t\tchar buf[64];\n \n \t\tsprintf(buf, \"IP Virtual Server version %d.%d.%d (size=%d)\",\n-\t\t\tNVERSION(IP_VS_VERSION_CODE), ip_vs_conn_tab_size);\n+\t\t\tNVERSION(IP_VS_VERSION_CODE), get_conn_tab_size(ipvs));\n \t\tif (copy_to_user(user, buf, strlen(buf)+1) != 0) {\n \t\t\tret = -EFAULT;\n \t\t\tgoto out;\n@@ -3438,8 +3455,9 @@ do_ip_vs_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)\n \tcase IP_VS_SO_GET_INFO:\n \t{\n \t\tstruct ip_vs_getinfo info;\n+\n \t\tinfo.version = IP_VS_VERSION_CODE;\n-\t\tinfo.size = ip_vs_conn_tab_size;\n+\t\tinfo.size = get_conn_tab_size(ipvs);\n \t\tinfo.num_services =\n \t\t\tatomic_read(&ipvs->num_services[IP_VS_AF_INET]);\n \t\tif (copy_to_user(user, &info, sizeof(info)) != 0)\n@@ -4448,7 +4466,7 @@ static int ip_vs_genl_get_cmd(struct sk_buff *skb, struct genl_info *info)\n \t\tif (nla_put_u32(msg, IPVS_INFO_ATTR_VERSION,\n \t\t\t\tIP_VS_VERSION_CODE) ||\n \t\t nla_put_u32(msg, IPVS_INFO_ATTR_CONN_TAB_SIZE,\n-\t\t\t\tip_vs_conn_tab_size))\n+\t\t\t\tget_conn_tab_size(ipvs)))\n \t\t\tgoto nla_put_failure;\n \t\tbreak;\n \t}\n","prefixes":["PATCHv2","nf-next","1/3"]}