/* * xfrm4_state.c * * Changes: * YOSHIFUJI Hideaki @USAGI * Split up af-specific portion * */ #include #include #include #include #include #include static int xfrm4_init_flags(struct xfrm_state *x) { if (xs_net(x)->ipv4.sysctl_ip_no_pmtu_disc) x->props.flags |= XFRM_STATE_NOPMTUDISC; return 0; } static void __xfrm4_init_tempsel(struct xfrm_selector *sel, const struct flowi *fl) { const struct flowi4 *fl4 = &fl->u.ip4; sel->daddr.a4 = fl4->daddr; sel->saddr.a4 = fl4->saddr; sel->dport = xfrm_flowi_dport(fl, &fl4->uli); sel->dport_mask = htons(0xffff); sel->sport = xfrm_flowi_sport(fl, &fl4->uli); sel->sport_mask = htons(0xffff); sel->family = AF_INET; sel->prefixlen_d = 32; sel->prefixlen_s = 32; sel->proto = fl4->flowi4_proto; sel->ifindex = fl4->flowi4_oif; } static void xfrm4_init_temprop(struct xfrm_state *x, const struct xfrm_tmpl *tmpl, const xfrm_address_t *daddr, const xfrm_address_t *saddr) { x->id = tmpl->id; if (x->id.daddr.a4 == 0) x->id.daddr.a4 = daddr->a4; x->props.saddr = tmpl->saddr; if (x->props.saddr.a4 == 0) x->props.saddr.a4 = saddr->a4; x->props.mode = tmpl->mode; x->props.reqid = tmpl->reqid; x->props.family = AF_INET; } int xfrm4_extract_header(struct sk_buff *skb) { const struct iphdr *iph = ip_hdr(skb); XFRM_MODE_SKB_CB(skb)->ihl = sizeof(*iph); XFRM_MODE_SKB_CB(skb)->id = iph->id; XFRM_MODE_SKB_CB(skb)->frag_off = iph->frag_off; XFRM_MODE_SKB_CB(skb)->tos = iph->tos; XFRM_MODE_SKB_CB(skb)->ttl = iph->ttl; XFRM_MODE_SKB_CB(skb)->optlen = iph->ihl * 4 - sizeof(*iph); memset(XFRM_MODE_SKB_CB(skb)->flow_lbl, 0, sizeof(XFRM_MODE_SKB_CB(skb)->flow_lbl)); return 0; } static struct xfrm_state_afinfo xfrm4_state_afinfo = { .family = AF_INET, .proto = IPPROTO_IPIP, .eth_proto = htons(ETH_P_IP), .owner = THIS_MODULE, .init_flags = xfrm4_init_flags, .init_tempsel = __xfrm4_init_tempsel, .init_temprop = xfrm4_init_temprop, .output = xfrm4_output, .output_finish = xfrm4_output_finish, .extract_input = xfrm4_extract_input, .extract_output = xfrm4_extract_output, .transport_finish = xfrm4_transport_finish, .local_error = xfrm4_local_error, }; void __init xfrm4_state_init(void) { xfrm_state_register_afinfo(&xfrm4_state_afinfo); } ='committer'>committer
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authorDavid Ahern <dsa@cumulusnetworks.com>2017-02-02 12:37:09 -0800
committerDavid S. Miller <davem@davemloft.net>2017-02-04 19:58:14 -0500
commitbeb1afac518dec5a15dc92ba8f0ca016dcf457b4 (patch)
treefd862968261f8dec35eed33991fa394232cc58db /net/ipv6
parent0ae8133586ad1c9be894411aaf8b17bb58c8efe5 (diff)
net: ipv6: Add support to dump multipath routes via RTA_MULTIPATH attribute
IPv6 returns multipath routes as a series of individual routes making their display and handling by userspace different and more complicated than IPv4, putting the burden on the user to see that a route is part of a multipath route and internally creating a multipath route if desired (e.g., libnl does this as of commit 29b71371e764). This patch addresses this difference, allowing multipath routes to be returned using the RTA_MULTIPATH attribute. The end result is that IPv6 multipath routes can be treated and displayed in a format similar to IPv4: $ ip -6 ro ls vrf red 2001:db8:1::/120 dev eth1 proto kernel metric 256 pref medium 2001:db8:2::/120 dev eth2 proto kernel metric 256 pref medium 2001:db8:200::/120 metric 1024 nexthop via 2001:db8:1::2 dev eth1 weight 1 nexthop via 2001:db8:2::2 dev eth2 weight 1 Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/ip6_fib.c10
-rw-r--r--net/ipv6/route.c112
2 files changed, 105 insertions, 17 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c