From mboxrd@z Thu Jan 1 00:00:00 1970 From: Serhey Popovych Subject: [PATCH iproute2-next v2 2/4] vti/vti6: Unify local/remote endpoint address parsing Date: Sun, 11 Feb 2018 22:02:31 +0200 Message-ID: <1518379353-31995-3-git-send-email-serhe.popovych@gmail.com> References: <1518379353-31995-1-git-send-email-serhe.popovych@gmail.com> To: netdev@vger.kernel.org Return-path: Received: from mail-lf0-f66.google.com ([209.85.215.66]:45611 "EHLO mail-lf0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753587AbeBKUCl (ORCPT ); Sun, 11 Feb 2018 15:02:41 -0500 Received: by mail-lf0-f66.google.com with SMTP id x196so17751184lfd.12 for ; Sun, 11 Feb 2018 12:02:40 -0800 (PST) Received: from tuxracer.localdomain ([2a01:6d80::195:20:96:53]) by smtp.gmail.com with ESMTPSA id s20sm1283327ljd.79.2018.02.11.12.02.37 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 11 Feb 2018 12:02:37 -0800 (PST) In-Reply-To: <1518379353-31995-1-git-send-email-serhe.popovych@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: We are going to merge link_vti.c and link_vti6.c and this is final step to make their diffs clear and show what needs to be changed during merge. Note that it is safe to omit endpoint address(es) from netlink create request as kernel is aware of such case and will use zero for that endpoint(s). Signed-off-by: Serhey Popovych --- ip/link_vti.c | 32 ++++++++++++++++++++------------ ip/link_vti6.c | 38 ++++++++++++++++++++------------------ 2 files changed, 40 insertions(+), 30 deletions(-) diff --git a/ip/link_vti.c b/ip/link_vti.c index edd17fe..125fc20 100644 --- a/ip/link_vti.c +++ b/ip/link_vti.c @@ -64,13 +64,17 @@ static int vti_parse_opt(struct link_util *lu, int argc, char **argv, struct rtattr *vtiinfo[IFLA_VTI_MAX + 1]; __be32 ikey = 0; __be32 okey = 0; - unsigned int saddr = 0; - unsigned int daddr = 0; + inet_prefix saddr, daddr; unsigned int link = 0; __u32 fwmark = 0; int len; + inet_prefix_reset_flags(&saddr); + inet_prefix_reset_flags(&daddr); + if (!(n->nlmsg_flags & NLM_F_CREATE)) { + const struct rtattr *rta; + if (rtnl_talk(&rth, &req.n, &answer) < 0) { get_failed: fprintf(stderr, @@ -96,18 +100,20 @@ get_failed: parse_rtattr_nested(vtiinfo, IFLA_VTI_MAX, linkinfo[IFLA_INFO_DATA]); + rta = vtiinfo[IFLA_VTI_LOCAL]; + if (rta && get_addr_rta(&saddr, rta, AF_INET)) + goto get_failed; + + rta = vtiinfo[IFLA_VTI_REMOTE]; + if (rta && get_addr_rta(&daddr, rta, AF_INET)) + goto get_failed; + if (vtiinfo[IFLA_VTI_IKEY]) ikey = rta_getattr_u32(vtiinfo[IFLA_VTI_IKEY]); if (vtiinfo[IFLA_VTI_OKEY]) okey = rta_getattr_u32(vtiinfo[IFLA_VTI_OKEY]); - if (vtiinfo[IFLA_VTI_LOCAL]) - saddr = rta_getattr_u32(vtiinfo[IFLA_VTI_LOCAL]); - - if (vtiinfo[IFLA_VTI_REMOTE]) - daddr = rta_getattr_u32(vtiinfo[IFLA_VTI_REMOTE]); - if (vtiinfo[IFLA_VTI_LINK]) link = rta_getattr_u8(vtiinfo[IFLA_VTI_LINK]); @@ -129,10 +135,10 @@ get_failed: okey = tnl_parse_key("okey", *argv); } else if (!matches(*argv, "remote")) { NEXT_ARG(); - daddr = get_addr32(*argv); + get_addr(&daddr, *argv, AF_INET); } else if (!matches(*argv, "local")) { NEXT_ARG(); - saddr = get_addr32(*argv); + get_addr(&saddr, *argv, AF_INET); } else if (!matches(*argv, "dev")) { NEXT_ARG(); link = ll_name_to_index(*argv); @@ -154,8 +160,10 @@ get_failed: addattr32(n, 1024, IFLA_VTI_IKEY, ikey); addattr32(n, 1024, IFLA_VTI_OKEY, okey); - addattr_l(n, 1024, IFLA_VTI_LOCAL, &saddr, 4); - addattr_l(n, 1024, IFLA_VTI_REMOTE, &daddr, 4); + if (is_addrtype_inet(&saddr)) + addattr_l(n, 1024, IFLA_VTI_LOCAL, saddr.data, saddr.bytelen); + if (is_addrtype_inet(&daddr)) + addattr_l(n, 1024, IFLA_VTI_REMOTE, daddr.data, daddr.bytelen); addattr32(n, 1024, IFLA_VTI_FWMARK, fwmark); if (link) addattr32(n, 1024, IFLA_VTI_LINK, link); diff --git a/ip/link_vti6.c b/ip/link_vti6.c index 1276ebd..9f2c6ac 100644 --- a/ip/link_vti6.c +++ b/ip/link_vti6.c @@ -64,15 +64,19 @@ static int vti6_parse_opt(struct link_util *lu, int argc, char **argv, struct rtattr *tb[IFLA_MAX + 1]; struct rtattr *linkinfo[IFLA_INFO_MAX+1]; struct rtattr *vtiinfo[IFLA_VTI_MAX + 1]; - struct in6_addr saddr = IN6ADDR_ANY_INIT; - struct in6_addr daddr = IN6ADDR_ANY_INIT; __be32 ikey = 0; __be32 okey = 0; + inet_prefix saddr, daddr; unsigned int link = 0; __u32 fwmark = 0; int len; + inet_prefix_reset_flags(&saddr); + inet_prefix_reset_flags(&daddr); + if (!(n->nlmsg_flags & NLM_F_CREATE)) { + const struct rtattr *rta; + if (rtnl_talk(&rth, &req.n, &answer) < 0) { get_failed: fprintf(stderr, @@ -98,18 +102,20 @@ get_failed: parse_rtattr_nested(vtiinfo, IFLA_VTI_MAX, linkinfo[IFLA_INFO_DATA]); + rta = vtiinfo[IFLA_VTI_LOCAL]; + if (rta && get_addr_rta(&saddr, rta, AF_INET6)) + goto get_failed; + + rta = vtiinfo[IFLA_VTI_REMOTE]; + if (rta && get_addr_rta(&daddr, rta, AF_INET6)) + goto get_failed; + if (vtiinfo[IFLA_VTI_IKEY]) ikey = rta_getattr_u32(vtiinfo[IFLA_VTI_IKEY]); if (vtiinfo[IFLA_VTI_OKEY]) okey = rta_getattr_u32(vtiinfo[IFLA_VTI_OKEY]); - if (vtiinfo[IFLA_VTI_LOCAL]) - memcpy(&saddr, RTA_DATA(vtiinfo[IFLA_VTI_LOCAL]), sizeof(saddr)); - - if (vtiinfo[IFLA_VTI_REMOTE]) - memcpy(&daddr, RTA_DATA(vtiinfo[IFLA_VTI_REMOTE]), sizeof(daddr)); - if (vtiinfo[IFLA_VTI_LINK]) link = rta_getattr_u8(vtiinfo[IFLA_VTI_LINK]); @@ -130,17 +136,11 @@ get_failed: NEXT_ARG(); okey = tnl_parse_key("okey", *argv); } else if (!matches(*argv, "remote")) { - inet_prefix addr; - NEXT_ARG(); - get_addr(&addr, *argv, AF_INET6); - memcpy(&daddr, addr.data, sizeof(daddr)); + get_addr(&daddr, *argv, AF_INET6); } else if (!matches(*argv, "local")) { - inet_prefix addr; - NEXT_ARG(); - get_addr(&addr, *argv, AF_INET6); - memcpy(&saddr, addr.data, sizeof(saddr)); + get_addr(&saddr, *argv, AF_INET6); } else if (!matches(*argv, "dev")) { NEXT_ARG(); link = ll_name_to_index(*argv); @@ -162,8 +162,10 @@ get_failed: addattr32(n, 1024, IFLA_VTI_IKEY, ikey); addattr32(n, 1024, IFLA_VTI_OKEY, okey); - addattr_l(n, 1024, IFLA_VTI_LOCAL, &saddr, sizeof(saddr)); - addattr_l(n, 1024, IFLA_VTI_REMOTE, &daddr, sizeof(daddr)); + if (is_addrtype_inet(&saddr)) + addattr_l(n, 1024, IFLA_VTI_LOCAL, saddr.data, saddr.bytelen); + if (is_addrtype_inet(&daddr)) + addattr_l(n, 1024, IFLA_VTI_REMOTE, daddr.data, daddr.bytelen); addattr32(n, 1024, IFLA_VTI_FWMARK, fwmark); if (link) addattr32(n, 1024, IFLA_VTI_LINK, link); -- 1.7.10.4