{"id":2232172,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2232172/?format=json","web_url":"http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260503083220.630655-2-rc@rexion.ai/","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":"<20260503083220.630655-2-rc@rexion.ai>","list_archive_url":null,"date":"2026-05-03T08:32:17","name":"[net-next,v3,1/4] netfilter: conntrack: add shared port and uint parsers for helpers","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"a356a5c97bda1ff2f1a1366d8c7ef7fe7859bdae","submitter":{"id":93293,"url":"http://patchwork.ozlabs.org/api/1.2/people/93293/?format=json","name":"HACKE-RC","email":"rc@rexion.ai"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260503083220.630655-2-rc@rexion.ai/mbox/","series":[{"id":502571,"url":"http://patchwork.ozlabs.org/api/1.2/series/502571/?format=json","web_url":"http://patchwork.ozlabs.org/project/netfilter-devel/list/?series=502571","date":"2026-05-03T08:32:16","name":"netfilter: conntrack: shared port parser for helpers","version":3,"mbox":"http://patchwork.ozlabs.org/series/502571/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2232172/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2232172/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=fail reason=\"key not found in DNS\" header.d=rexion.ai\n header.i=@rexion.ai header.a=rsa-sha256 header.s=spacemail header.b=RxLF9KJQ;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.105.105.114; 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Miller\" ,\n\tEric Dumazet ,\n\tJakub Kicinski ,\n\tPaolo Abeni ,\n\tSimon Horman ,\n\tnetfilter-devel@vger.kernel.org,\n\tcoreteam@netfilter.org,\n\tnetdev@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tHACKE-RC ","Subject":"[PATCH net-next v3 1/4] netfilter: conntrack: add shared port and\n uint parsers for helpers","Date":"Sun, 3 May 2026 14:02:17 +0530","Message-ID":"<20260503083220.630655-2-rc@rexion.ai>","X-Mailer":"git-send-email 2.54.0","In-Reply-To":"<20260503083220.630655-1-rc@rexion.ai>","References":"\n <20260503083220.630655-1-rc@rexion.ai>","Precedence":"bulk","X-Mailing-List":"netfilter-devel@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-Envelope-From":"rc@rexion.ai"},"content":"Add nf_ct_helper_parse_uint() for bounded unsigned integer parsing\nfrom an unterminated buffer, and nf_ct_helper_parse_port() which calls\nit with max=65535 and rejects port zero. Both helpers are exported so\nconntrack protocol helpers can replace ad-hoc simple_strtoul() usage.\n\nSigned-off-by: HACKE-RC \n---\n include/net/netfilter/nf_conntrack_helper.h | 5 +++\n net/netfilter/nf_conntrack_helper.c | 39 +++++++++++++++++++++\n 2 files changed, 44 insertions(+)","diff":"diff --git a/include/net/netfilter/nf_conntrack_helper.h b/include/net/netfilter/nf_conntrack_helper.h\nindex de2f956ab..ab145fcd9 100644\n--- a/include/net/netfilter/nf_conntrack_helper.h\n+++ b/include/net/netfilter/nf_conntrack_helper.h\n@@ -160,6 +160,11 @@ nf_ct_helper_expectfn_find_by_name(const char *name);\n struct nf_ct_helper_expectfn *\n nf_ct_helper_expectfn_find_by_symbol(const void *symbol);\n \n+int nf_ct_helper_parse_uint(const char *cp, unsigned int len,\n+\t\t\t unsigned long max, unsigned long *val, char **endp);\n+int nf_ct_helper_parse_port(const char *cp, unsigned int len,\n+\t\t\t u16 *port, char **endp);\n+\n extern struct hlist_head *nf_ct_helper_hash;\n extern unsigned int nf_ct_helper_hsize;\n \ndiff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c\nindex a715304a5..f6229957c 100644\n--- a/net/netfilter/nf_conntrack_helper.c\n+++ b/net/netfilter/nf_conntrack_helper.c\n@@ -499,6 +499,45 @@ void nf_nat_helper_unregister(struct nf_conntrack_nat_helper *nat)\n }\n EXPORT_SYMBOL_GPL(nf_nat_helper_unregister);\n \n+int nf_ct_helper_parse_uint(const char *cp, unsigned int len,\n+\t\t\t unsigned long max, unsigned long *val, char **endp)\n+{\n+\tunsigned long result = 0;\n+\n+\tif (!len || *cp < '0' || *cp > '9')\n+\t\treturn -1;\n+\n+\twhile (len > 0 && *cp >= '0' && *cp <= '9') {\n+\t\tresult = result * 10 + (*cp - '0');\n+\t\tif (result > max)\n+\t\t\treturn -1;\n+\t\tcp++;\n+\t\tlen--;\n+\t}\n+\n+\t*val = result;\n+\tif (endp)\n+\t\t*endp = (char *)cp;\n+\n+\treturn 0;\n+}\n+EXPORT_SYMBOL_GPL(nf_ct_helper_parse_uint);\n+\n+int nf_ct_helper_parse_port(const char *cp, unsigned int len,\n+\t\t\t u16 *port, char **endp)\n+{\n+\tunsigned long val;\n+\n+\tif (nf_ct_helper_parse_uint(cp, len, 65535, &val, endp))\n+\t\treturn -1;\n+\tif (val == 0)\n+\t\treturn -1;\n+\n+\t*port = val;\n+\treturn 0;\n+}\n+EXPORT_SYMBOL_GPL(nf_ct_helper_parse_port);\n+\n int nf_conntrack_helper_init(void)\n {\n \tnf_ct_helper_hsize = 1; /* gets rounded up to use one page */\n","prefixes":["net-next","v3","1/4"]}