af4fa965e9
Linux uses NLM_F_REPLACE in the netlink message to signal a FIB update The code invariably does a FIB update for IPv4 and a addition for IPv6. Without this fix, the following: ip route add 2001:db8::/48 via 2001:db8::1 ip route replace 2001:db8::/48 via 2001:db8::2 ends up as two separate FIB entries in VPP. With the fix, there will be one FIB entry (the second one with nexthop ::2). Type: fix Change-Id: I8f98d6ded52ae0c60bfddaa7fc39acbbaa19d34a Signed-off-by: Pim van Pelt <pim@ipng.nl>
162 lines
4.1 KiB
C
162 lines
4.1 KiB
C
/*
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* Copyright (c) 2019 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <vlib/vlib.h>
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#include <netlink/route/link.h>
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#include <netlink/route/route.h>
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#include <netlink/route/neighbour.h>
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#include <netlink/route/addr.h>
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typedef void (*nl_rt_link_cb_t) (struct rtnl_link *rl, void *ctx);
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typedef void (*nl_rt_link_sync_cb_t) (void);
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typedef void (*nl_rt_addr_cb_t) (struct rtnl_addr *ra);
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typedef void (*nl_rt_addr_sync_cb_t) (void);
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typedef void (*nl_rt_neigh_cb_t) (struct rtnl_neigh *rr);
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typedef void (*nl_rt_neigh_sync_cb_t) (void);
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typedef void (*nl_rt_route_add_cb_t) (struct rtnl_route *rn, int is_replace);
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typedef void (*nl_rt_route_del_cb_t) (struct rtnl_route *rn);
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typedef void (*nl_rt_route_sync_cb_t) (void);
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#define NL_RT_COMMON uword is_mp_safe
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typedef struct nl_rt_link_t_
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{
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NL_RT_COMMON;
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nl_rt_link_cb_t cb;
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} nl_rt_link_t;
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typedef struct nl_rt_link_sync_t_
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{
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NL_RT_COMMON;
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nl_rt_link_sync_cb_t cb;
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} nl_rt_link_sync_t;
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typedef struct nl_rt_addr_t_
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{
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NL_RT_COMMON;
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nl_rt_addr_cb_t cb;
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} nl_rt_addr_t;
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typedef struct nl_rt_addr_sync_t_
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{
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NL_RT_COMMON;
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nl_rt_addr_sync_cb_t cb;
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} nl_rt_addr_sync_t;
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typedef struct nl_rt_neigh_t_
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{
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NL_RT_COMMON;
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nl_rt_neigh_cb_t cb;
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} nl_rt_neigh_t;
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typedef struct nl_rt_neigh_sync_t_
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{
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NL_RT_COMMON;
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nl_rt_neigh_sync_cb_t cb;
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} nl_rt_neigh_sync_t;
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typedef struct nl_rt_route_add_t_
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{
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NL_RT_COMMON;
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nl_rt_route_add_cb_t cb;
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} nl_rt_route_add_t;
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typedef struct nl_rt_route_del_t_
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{
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NL_RT_COMMON;
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nl_rt_route_del_cb_t cb;
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} nl_rt_route_del_t;
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typedef struct nl_rt_route_sync_t_
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{
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NL_RT_COMMON;
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nl_rt_route_sync_cb_t cb;
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} nl_rt_route_sync_t;
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#undef NL_RT_COMMON
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typedef struct nl_vft_t_
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{
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nl_rt_link_t nvl_rt_link_add;
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nl_rt_link_t nvl_rt_link_del;
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nl_rt_link_sync_t nvl_rt_link_sync_begin;
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nl_rt_link_sync_t nvl_rt_link_sync_end;
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nl_rt_addr_t nvl_rt_addr_add;
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nl_rt_addr_t nvl_rt_addr_del;
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nl_rt_addr_sync_t nvl_rt_addr_sync_begin;
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nl_rt_addr_sync_t nvl_rt_addr_sync_end;
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nl_rt_neigh_t nvl_rt_neigh_add;
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nl_rt_neigh_t nvl_rt_neigh_del;
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nl_rt_neigh_sync_t nvl_rt_neigh_sync_begin;
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nl_rt_neigh_sync_t nvl_rt_neigh_sync_end;
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nl_rt_route_add_t nvl_rt_route_add;
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nl_rt_route_del_t nvl_rt_route_del;
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nl_rt_route_sync_t nvl_rt_route_sync_begin;
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nl_rt_route_sync_t nvl_rt_route_sync_end;
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} nl_vft_t;
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extern void nl_register_vft (const nl_vft_t *nv);
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typedef enum lcp_nl_obj_t_
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{
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LCP_NL_LINK,
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LCP_NL_ADDR,
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LCP_NL_NEIGH,
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LCP_NL_ROUTE,
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} lcp_nl_obj_t;
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/* struct type to hold context on the netlink message being processed.
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*
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* At creation of a pair, a tap/tun is created and configured to match its
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* corresponding hardware interface (MAC address, link state, MTU). Netlink
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* messages are sent announcing the creation and subsequent configuration.
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* We do not need to (and should not) act on those messages since applying
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* those same configurations again is unnecessary and can be disruptive. So
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* a timestamp for a message is stored and can be compared against the time
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* the interface came under linux-cp management in order to figure out
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* whether we should apply any configuration.
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*/
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typedef struct nl_msg_info
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{
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struct nl_msg *msg;
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f64 ts;
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} nl_msg_info_t;
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#define LCP_NL_N_OBJS (LCP_NL_ROUTE + 1)
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extern struct nl_cache *lcp_nl_get_cache (lcp_nl_obj_t t);
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extern int lcp_nl_drain_messages (void);
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extern void lcp_nl_set_buffer_size (u32 buf_size);
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extern void lcp_nl_set_batch_size (u32 batch_size);
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extern void lcp_nl_set_batch_delay (u32 batch_delay_ms);
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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