From nobody Tue Feb 10 13:01:37 2026 Received: from serv108.segi.ulg.ac.be (serv108.segi.ulg.ac.be [139.165.32.111]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 71F93131720; Thu, 22 Feb 2024 13:42:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=139.165.32.111 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708609367; cv=none; b=BX5932B3gkklDVOzMvxOrEECGRD53EH+QtDTxhBp44pzUM4nEjAwIwPvYOxnm0cbu2LsHH0ofxPZx8CJ1veu1swO2OF5aKCzdHnSZxXTC/Zc9ll+722vFTzyEZYKvHf5Gt0978ZiaNSiAJ1qSlQVCgpfSUnf+bs5vFojJi6YzoE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708609367; c=relaxed/simple; bh=XN/Z2W6Q47kswIvugAyf+0JDBepLSAUiKU4MFYhPfmY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=QgN/ZUFoA9N2W5B5tqKPRqBrvX3dvLlIGewRbqX5FkO/Vffuhh7miiP8M/rr4kKDDl0WOJ01KOrCxMTA8kJUkZSqEyBq/29EvIdIKbf0s8MnCygIjyrE1rzs5eEw7daDtTVvzcZPk8Lq/N7ee8jYZELa5t6ak8YH6HVj+hbeJuw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=uliege.be; spf=pass smtp.mailfrom=uliege.be; dkim=pass (2048-bit key) header.d=uliege.be header.i=@uliege.be header.b=1A+aMNqu; arc=none smtp.client-ip=139.165.32.111 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=uliege.be Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=uliege.be Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=uliege.be header.i=@uliege.be header.b="1A+aMNqu" Received: from localhost.localdomain (125.179-65-87.adsl-dyn.isp.belgacom.be [87.65.179.125]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by serv108.segi.ulg.ac.be (Postfix) with ESMTPSA id 87EB9200DF8B; Thu, 22 Feb 2024 14:42:37 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 serv108.segi.ulg.ac.be 87EB9200DF8B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=uliege.be; s=ulg20190529; t=1708609357; bh=hq6ndT35T0S7QhhDxp3zV7pZyTqFTsug9KaHtrGUSs0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1A+aMNquuOAkG4srgI3mumI/VG2cDZalI23BgDCwLfgPn47Sy1G2eh5Zni3VQBTiX 7ip7Qq5mtPRfr0IdqmaDez/vorkqn3ajiDQFn6HCYgNw2DV5JlvKbRin9mT79E5Wo2 CpSCpX+3x34APjSaskZFPX1v6j4IYB1bdtSSDlK0UEBE//Ai33OncIdIbBYJbiDHB0 whrJzlAuERKlpMw16lgIX7hXY6y8+8P66PHz1kfJPbndgYBgZ6YQ8W8F3cpNW9VNGR fz5nGsRNz5USLUCWdIz1wAXVjrEgPhx3zsLBBpCxLL4tlMctwO6CksPQFI1GL8pVws cbxAoe5BRarWQ== From: Justin Iurman To: netdev@vger.kernel.org Cc: davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, linux-kernel@vger.kernel.org, justin.iurman@uliege.be Subject: [PATCH net-next v2 2/3] net: ioam6: multicast event Date: Thu, 22 Feb 2024 14:42:19 +0100 Message-Id: <20240222134220.16698-3-justin.iurman@uliege.be> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240222134220.16698-1-justin.iurman@uliege.be> References: <20240222134220.16698-1-justin.iurman@uliege.be> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add a multicast group to the ioam6 generic netlink family and provide ioam6_event() to send an ioam6 event to the multicast group. Signed-off-by: Justin Iurman --- include/net/ioam6.h | 4 +++ net/ipv6/ioam6.c | 64 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 68 insertions(+) diff --git a/include/net/ioam6.h b/include/net/ioam6.h index 781d2d8b2f29..2cbbee6e806a 100644 --- a/include/net/ioam6.h +++ b/include/net/ioam6.h @@ -12,6 +12,7 @@ #include #include #include +#include #include =20 struct ioam6_namespace { @@ -65,4 +66,7 @@ void ioam6_exit(void); int ioam6_iptunnel_init(void); void ioam6_iptunnel_exit(void); =20 +void ioam6_event(enum ioam6_event_type type, struct net *net, gfp_t gfp, + void *opt, unsigned int opt_len); + #endif /* _NET_IOAM6_H */ diff --git a/net/ipv6/ioam6.c b/net/ipv6/ioam6.c index 571f0e4d9cf3..5fa923f06632 100644 --- a/net/ipv6/ioam6.c +++ b/net/ipv6/ioam6.c @@ -612,6 +612,68 @@ static const struct genl_ops ioam6_genl_ops[] =3D { }, }; =20 +#define IOAM6_GENL_EV_GRP_OFFSET 0 + +static const struct genl_multicast_group ioam6_mcgrps[] =3D { + [IOAM6_GENL_EV_GRP_OFFSET] =3D { .name =3D IOAM6_GENL_EV_GRP_NAME, + .flags =3D GENL_MCAST_CAP_NET_ADMIN }, +}; + +static int ioam6_event_put_trace(struct sk_buff *skb, + struct ioam6_trace_hdr *trace, + unsigned int len) +{ + if (nla_put_u16(skb, IOAM6_EVENT_ATTR_TRACE_NAMESPACE, + be16_to_cpu(trace->namespace_id)) || + nla_put_u8(skb, IOAM6_EVENT_ATTR_TRACE_NODELEN, trace->nodelen) || + nla_put_u32(skb, IOAM6_EVENT_ATTR_TRACE_TYPE, + be32_to_cpu(trace->type_be32)) || + nla_put(skb, IOAM6_EVENT_ATTR_TRACE_DATA, + len - sizeof(struct ioam6_trace_hdr) - trace->remlen * 4, + trace->data + trace->remlen * 4)) + return 1; + + return 0; +} + +void ioam6_event(enum ioam6_event_type type, struct net *net, gfp_t gfp, + void *opt, unsigned int opt_len) +{ + struct nlmsghdr *nlh; + struct sk_buff *skb; + + if (!genl_has_listeners(&ioam6_genl_family, net, + IOAM6_GENL_EV_GRP_OFFSET)) + return; + + skb =3D nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); + if (!skb) + return; + + nlh =3D genlmsg_put(skb, 0, 0, &ioam6_genl_family, 0, type); + if (!nlh) + goto nla_put_failure; + + switch (type) { + case IOAM6_EVENT_UNSPEC: + WARN_ON_ONCE(1); + break; + case IOAM6_EVENT_TRACE: + if (ioam6_event_put_trace(skb, (struct ioam6_trace_hdr *)opt, + opt_len)) + goto nla_put_failure; + break; + } + + genlmsg_end(skb, nlh); + genlmsg_multicast_netns(&ioam6_genl_family, net, skb, 0, + IOAM6_GENL_EV_GRP_OFFSET, gfp); + return; + +nla_put_failure: + nlmsg_free(skb); +} + static struct genl_family ioam6_genl_family __ro_after_init =3D { .name =3D IOAM6_GENL_NAME, .version =3D IOAM6_GENL_VERSION, @@ -620,6 +682,8 @@ static struct genl_family ioam6_genl_family __ro_after_= init =3D { .ops =3D ioam6_genl_ops, .n_ops =3D ARRAY_SIZE(ioam6_genl_ops), .resv_start_op =3D IOAM6_CMD_NS_SET_SCHEMA + 1, + .mcgrps =3D ioam6_mcgrps, + .n_mcgrps =3D ARRAY_SIZE(ioam6_mcgrps), .module =3D THIS_MODULE, }; =20 --=20 2.34.1