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GET /api/1.1/patches/2225110/?format=api
{ "id": 2225110, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2225110/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260420105816.72168-3-mahe.tardy@gmail.com/", "project": { "id": 26, "url": "http://patchwork.ozlabs.org/api/1.1/projects/26/?format=api", "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 }, "msgid": "<20260420105816.72168-3-mahe.tardy@gmail.com>", "date": "2026-04-20T10:58:12", "name": "[bpf-next,v4,2/6] net: move netfilter nf_reject6_fill_skb_dst to core ipv6", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "86f3472e91b87905edf6f373fa85f42e11ada43a", "submitter": { "id": 91349, "url": "http://patchwork.ozlabs.org/api/1.1/people/91349/?format=api", "name": "Mahe Tardy", "email": "mahe.tardy@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/netfilter-devel/patch/20260420105816.72168-3-mahe.tardy@gmail.com/mbox/", "series": [ { "id": 500597, "url": "http://patchwork.ozlabs.org/api/1.1/series/500597/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netfilter-devel/list/?series=500597", "date": "2026-04-20T10:58:10", "name": "bpf: add icmp_send_unreach kfunc", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/500597/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225110/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225110/checks/", "tags": {}, "headers": { "Return-Path": "\n <netfilter-devel+bounces-12041-incoming=patchwork.ozlabs.org@vger.kernel.org>", "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 (2048-bit key;\n unprotected) header.d=gmail.com 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"alexei.starovoitov@gmail.com,\n\tandrii@kernel.org,\n\tast@kernel.org,\n\tbpf@vger.kernel.org,\n\tcoreteam@netfilter.org,\n\tdaniel@iogearbox.net,\n\tfw@strlen.de,\n\tjohn.fastabend@gmail.com,\n\tlkp@intel.com,\n\tmartin.lau@linux.dev,\n\tnetdev@vger.kernel.org,\n\tnetfilter-devel@vger.kernel.org,\n\toe-kbuild-all@lists.linux.dev,\n\tpablo@netfilter.org", "Subject": "[PATCH bpf-next v4 2/6] net: move netfilter nf_reject6_fill_skb_dst\n to core ipv6", "Date": "Mon, 20 Apr 2026 10:58:12 +0000", "Message-Id": "<20260420105816.72168-3-mahe.tardy@gmail.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20260420105816.72168-1-mahe.tardy@gmail.com>", "References": "<aI0MkNvWlE4FXMV8@gmail.com>\n <20260420105816.72168-1-mahe.tardy@gmail.com>", "Precedence": "bulk", "X-Mailing-List": "netfilter-devel@vger.kernel.org", "List-Id": "<netfilter-devel.vger.kernel.org>", "List-Subscribe": "<mailto:netfilter-devel+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:netfilter-devel+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit" }, "content": "Move and rename nf_reject6_fill_skb_dst from\nipv6/netfilter/nf_reject_ipv6 to ip6_route_reply_fetch_dst in\nipv6/route.c so that it can be reused in the following patches by BPF\nkfuncs.\n\nNetfilter uses nf_ip6_route that is almost a transparent wrapper around\nip6_route_output so this patch inlines it.\n\nSigned-off-by: Mahe Tardy <mahe.tardy@gmail.com>\n---\n include/net/ip6_route.h | 2 ++\n net/ipv6/netfilter/nf_reject_ipv6.c | 17 +----------------\n net/ipv6/route.c | 18 ++++++++++++++++++\n 3 files changed, 21 insertions(+), 16 deletions(-)\n\n--\n2.34.1", "diff": "diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h\nindex 09ffe0f13ce7..3652efec7081 100644\n--- a/include/net/ip6_route.h\n+++ b/include/net/ip6_route.h\n@@ -100,6 +100,8 @@ static inline struct dst_entry *ip6_route_output(struct net *net,\n \treturn ip6_route_output_flags(net, sk, fl6, 0);\n }\n\n+int ip6_route_reply_fetch_dst(struct sk_buff *skb);\n+\n /* Only conditionally release dst if flags indicates\n * !RT6_LOOKUP_F_DST_NOREF or dst is in uncached_list.\n */\ndiff --git a/net/ipv6/netfilter/nf_reject_ipv6.c b/net/ipv6/netfilter/nf_reject_ipv6.c\nindex ef5b7e85cffa..9663d1db6d80 100644\n--- a/net/ipv6/netfilter/nf_reject_ipv6.c\n+++ b/net/ipv6/netfilter/nf_reject_ipv6.c\n@@ -293,21 +293,6 @@ nf_reject_ip6_tcphdr_put(struct sk_buff *nskb,\n \t\t\t\t\t\t sizeof(struct tcphdr), 0));\n }\n\n-static int nf_reject6_fill_skb_dst(struct sk_buff *skb_in)\n-{\n-\tstruct dst_entry *dst = NULL;\n-\tstruct flowi fl;\n-\n-\tmemset(&fl, 0, sizeof(struct flowi));\n-\tfl.u.ip6.daddr = ipv6_hdr(skb_in)->saddr;\n-\tnf_ip6_route(dev_net(skb_in->dev), &dst, &fl, false);\n-\tif (!dst)\n-\t\treturn -1;\n-\n-\tskb_dst_set(skb_in, dst);\n-\treturn 0;\n-}\n-\n void nf_send_reset6(struct net *net, struct sock *sk, struct sk_buff *oldskb,\n \t\t int hook)\n {\n@@ -440,7 +425,7 @@ void nf_send_unreach6(struct net *net, struct sk_buff *skb_in,\n \tif (hooknum == NF_INET_LOCAL_OUT && skb_in->dev == NULL)\n \t\tskb_in->dev = net->loopback_dev;\n\n-\tif (!skb_dst(skb_in) && nf_reject6_fill_skb_dst(skb_in) < 0)\n+\tif (!skb_dst(skb_in) && ip6_route_reply_fetch_dst(skb_in) < 0)\n \t\treturn;\n\n \ticmpv6_send(skb_in, ICMPV6_DEST_UNREACH, code, 0);\ndiff --git a/net/ipv6/route.c b/net/ipv6/route.c\nindex 19eb6b702227..41871fddec4d 100644\n--- a/net/ipv6/route.c\n+++ b/net/ipv6/route.c\n@@ -2721,6 +2721,24 @@ struct dst_entry *ip6_route_output_flags(struct net *net,\n }\n EXPORT_SYMBOL_GPL(ip6_route_output_flags);\n\n+int ip6_route_reply_fetch_dst(struct sk_buff *skb)\n+{\n+\tstruct dst_entry *result;\n+\tstruct flowi6 fl = {\n+\t\t.daddr = ipv6_hdr(skb)->saddr\n+\t};\n+\tint err;\n+\n+\tresult = ip6_route_output(dev_net(skb->dev), NULL, &fl);\n+\terr = result->error;\n+\tif (err)\n+\t\tdst_release(result);\n+\telse\n+\t\tskb_dst_set(skb, result);\n+\treturn err;\n+}\n+EXPORT_SYMBOL_GPL(ip6_route_reply_fetch_dst);\n+\n struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_orig)\n {\n \tstruct rt6_info *rt, *ort = dst_rt6_info(dst_orig);\n", "prefixes": [ "bpf-next", "v4", "2/6" ] }