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net/netlink: Add options to disable individual NETLINK_ROUTE commands. This will probably become quite large and will need to be higher tunable for smaller platforms.
This commit is contained in:
Gregory Nutt
parent
b49b07cb75
commit
3e1937b49b
2 changed files with 129 additions and 57 deletions
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@ -34,6 +34,27 @@ config NETLINK_ROUTE
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---help---
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Support the NETLINK_ROUTE protocol option.
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if NETLINK_ROUTE
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config NETLINK_DISABLE_GETLINK
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bool "Disable RTM_GETLINK support"
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default n
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---help---
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RTM_GETLINK is used to enumerate network devices.
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config NETLINK_DISABLE_GETNEIGH
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bool "Disable RTM_GETNEIGH support"
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default n
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---help---
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RTM_GETNEIGH is used to retrieve Neighbor/ARP tables.
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config NETLINK_DISABLE_GETROUTE
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bool "Disable RTM_GETROUTE support"
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default n
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---help---
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RTM_GETROUTE is used to retrieve routing tables.
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endif # NETLINK_ROUTE
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endmenu # Netlink Protocols
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endif # NET_NETLINK
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endmenu # Netlink Socket Support
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@ -62,9 +62,30 @@
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#ifdef CONFIG_NETLINK_ROUTE
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/****************************************************************************
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* Private Types
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#if !defined(CONFIG_NET_ARP) && !defined(CONFIG_NET_IPv6)
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# undef CONFIG_NETLINK_DISABLE_GETNEIGH
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# define CONFIG_NETLINK_DISABLE_GETNEIGH 1
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#endif
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#if !defined(CONFIG_NET_ROUTE) || (!defined(CONFIG_NET_IPv4) && \
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!defined(CONFIG_NET_IPv6))
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# undef CONFIG_NETLINK_DISABLE_GETROUTE
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# define CONFIG_NETLINK_DISABLE_GETROUTE 1
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#endif
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#undef NETLINK_DISABLE_NLMSGDONE
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#if defined(CONFIG_NETLINK_DISABLE_GETLINK) && \
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defined(CONFIG_NETLINK_DISABLE_GETROUTE)
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# define NETLINK_DISABLE_NLMSGDONE 1
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#endif
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/* Helpers ******************************************************************/
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#define IFA_RTA(r) \
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((FAR struct rtattr *)(((FAR char *)(r)) + \
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NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
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@ -235,6 +256,7 @@ struct nlroute_routeinfo_s
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*
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****************************************************************************/
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#ifndef CONFIG_NETLINK_DISABLE_GETLINK
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static int netlink_device_callback(FAR struct net_driver_s *dev,
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FAR void *arg)
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{
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@ -413,6 +435,7 @@ static int netlink_device_callback(FAR struct net_driver_s *dev,
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netlink_add_response(devinfo->psock, (FAR struct netlink_response_s *)alloc);
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return 0;
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}
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#endif
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/****************************************************************************
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* Name: netlink_get_devlist
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@ -422,6 +445,7 @@ static int netlink_device_callback(FAR struct net_driver_s *dev,
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*
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****************************************************************************/
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#ifndef CONFIG_NETLINK_DISABLE_GETLINK
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static int netlink_get_devlist(FAR struct socket *psock,
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FAR const struct getlink_sendto_request_s *req)
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{
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@ -469,6 +493,7 @@ static int netlink_get_devlist(FAR struct socket *psock,
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net_unlock();
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return OK;
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}
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#endif
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/****************************************************************************
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* Name: netlink_get_arptable()
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@ -478,7 +503,7 @@ static int netlink_get_devlist(FAR struct socket *psock,
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*
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****************************************************************************/
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#ifdef CONFIG_NET_ARP
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#if defined(CONFIG_NET_ARP) && !defined(CONFIG_NETLINK_DISABLE_GETNEIGH)
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static int netlink_get_arptable(FAR struct socket *psock,
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FAR const struct getneigh_sendto_request_s *req)
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{
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@ -561,7 +586,7 @@ static int netlink_get_arptable(FAR struct socket *psock,
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*
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****************************************************************************/
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#ifdef CONFIG_NET_IPv6
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#if defined(CONFIG_NET_IPv6) && !defined(CONFIG_NETLINK_DISABLE_GETNEIGH)
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static int netlink_get_nbtable(FAR struct socket *psock,
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FAR const struct getneigh_sendto_request_s *req)
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{
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@ -645,8 +670,7 @@ static int netlink_get_nbtable(FAR struct socket *psock,
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*
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****************************************************************************/
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#if defined(CONFIG_NET_ROUTE) && (defined(CONFIG_NET_IPv4) || \
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defined(CONFIG_NET_IPv6))
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#ifndef CONFIG_NETLINK_DISABLE_GETROUTE
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static int netlink_route_terminator(FAR struct socket *psock,
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FAR const struct getroute_sendto_request_s *req)
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{
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@ -691,7 +715,7 @@ static int netlink_route_terminator(FAR struct socket *psock,
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*
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****************************************************************************/
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#if defined(CONFIG_NET_ROUTE) && defined(CONFIG_NET_IPv4)
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#if defined(CONFIG_NET_IPv4) && !defined(CONFIG_NETLINK_DISABLE_GETROUTE)
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static int netlink_ipv4_route(FAR struct net_route_ipv4_s *route,
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FAR void *arg)
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{
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@ -753,7 +777,7 @@ static int netlink_ipv4_route(FAR struct net_route_ipv4_s *route,
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*
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****************************************************************************/
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#if defined(CONFIG_NET_ROUTE) && defined(CONFIG_NET_IPv4)
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#if defined(CONFIG_NET_IPv4) && !defined(CONFIG_NETLINK_DISABLE_GETROUTE)
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static int netlink_get_ipv4route(FAR struct socket *psock,
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FAR const struct getroute_sendto_request_s *req)
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{
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@ -788,7 +812,7 @@ static int netlink_get_ipv4route(FAR struct socket *psock,
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*
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****************************************************************************/
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#if defined(CONFIG_NET_ROUTE) && defined(CONFIG_NET_IPv6)
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#if defined(CONFIG_NET_IPv6) && !defined(CONFIG_NETLINK_DISABLE_GETROUTE)
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static int netlink_ipv6_route(FAR struct net_route_ipv6_s *route,
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FAR void *arg)
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{
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@ -850,7 +874,7 @@ static int netlink_ipv6_route(FAR struct net_route_ipv6_s *route,
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*
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****************************************************************************/
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#if defined(CONFIG_NET_ROUTE) && defined(CONFIG_NET_IPv6)
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#if defined(CONFIG_NET_IPv6) && !defined(CONFIG_NETLINK_DISABLE_GETROUTE)
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static int netlink_get_ip6vroute(FAR struct socket *psock,
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FAR const struct getroute_sendto_request_s *req)
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{
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@ -897,6 +921,7 @@ ssize_t netlink_route_sendto(FAR struct socket *psock,
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{
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FAR const struct getneigh_sendto_request_s *gnreq =
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(FAR const struct getneigh_sendto_request_s *)nlmsg;
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int ret;
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DEBUGASSERT(psock != NULL && nlmsg != NULL &&
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nlmsg->nlmsg_len >= sizeof(struct nlmsghdr) &&
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@ -904,76 +929,98 @@ ssize_t netlink_route_sendto(FAR struct socket *psock,
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len >= nlmsg->nlmsg_len && to != NULL &&
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tolen >= sizeof(struct sockaddr_nl));
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/* Dump a list of all devices */
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/* Handle according to the message type */
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if (gnreq->hdr.nlmsg_type == RTM_GETLINK)
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switch (gnreq->hdr.nlmsg_type)
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{
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FAR const struct getlink_sendto_request_s *glreq =
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(FAR const struct getlink_sendto_request_s *)nlmsg;
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int ret;
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#ifndef CONFIG_NETLINK_DISABLE_GETLINK
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/* Dump a list of all devices */
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ret = netlink_get_devlist(psock, glreq);
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return ret < 0 ? ret : len;
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}
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case RTM_GETLINK:
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{
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FAR const struct getlink_sendto_request_s *glreq =
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(FAR const struct getlink_sendto_request_s *)nlmsg;
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/* Generate the response */
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ret = netlink_get_devlist(psock, glreq);
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}
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break;
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#endif
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#ifndef CONFIG_NETLINK_DISABLE_GETNEIGH
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/* Retrieve ARP/Neighbor Tables */
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case RTM_GETNEIGH:
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{
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#ifdef CONFIG_NET_ARP
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/* Retrieve the ARP table in its entirety. */
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/* Retrieve the ARP table in its entirety. */
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else if (gnreq->hdr.nlmsg_type == RTM_GETNEIGH &&
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gnreq->msg.ndm_family == AF_INET)
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{
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int ret = netlink_get_arptable(psock, gnreq);
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return ret < 0 ? ret : len;
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}
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if (gnreq->msg.ndm_family == AF_INET)
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{
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ret = netlink_get_arptable(psock, gnreq);
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}
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else
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#endif
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#ifdef CONFIG_NET_IPv6
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/* Retrieve the IPv6 neighbor table in its entirety. */
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/* Retrieve the IPv6 neighbor table in its entirety. */
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else if (gnreq->hdr.nlmsg_type == RTM_GETNEIGH &&
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gnreq->msg.ndm_family == AF_INET6)
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{
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int ret = netlink_get_nbtable(psock, gnreq);
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return ret < 0 ? ret : len;
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}
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if (gnreq->msg.ndm_family == AF_INET6)
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{
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ret = netlink_get_nbtable(psock, gnreq);
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}
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else
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#endif
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{
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ret = -EAFNOSUPPORT;
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}
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}
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break;
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#endif /* !CONFIG_NETLINK_DISABLE_GETNEIGH */
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#ifdef CONFIG_NET_ROUTE
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/* Retrieve the IPv4 or IPv6 routing table */
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#ifndef CONFIG_NETLINK_DISABLE_GETROUTE
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/* Retrieve the IPv4 or IPv6 routing table */
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else if (gnreq->hdr.nlmsg_type == RTM_GETROUTE)
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{
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FAR const struct getroute_sendto_request_s *grreq =
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(FAR const struct getroute_sendto_request_s *)nlmsg;
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int ret;
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case RTM_GETROUTE:
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{
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FAR const struct getroute_sendto_request_s *grreq =
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(FAR const struct getroute_sendto_request_s *)nlmsg;
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#ifdef CONFIG_NET_IPv4
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if (grreq->gen.rtgen_family == AF_INET)
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{
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ret = netlink_get_ipv4route(psock, grreq);
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}
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if (grreq->gen.rtgen_family == AF_INET)
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{
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ret = netlink_get_ipv4route(psock, grreq);
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}
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else
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#endif
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#ifdef CONFIG_NET_IPv6
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#ifdef CONFIG_NET_IPv4
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else
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if (grreq->gen.rtgen_family == AF_INET6)
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{
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ret = netlink_get_ip6vroute(psock, grreq);
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}
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else
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#endif
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if (grreq->gen.rtgen_family == AF_INET6)
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{
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ret = netlink_get_ip6vroute(psock, grreq);
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{
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ret = -EAFNOSUPPORT;
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}
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}
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break;
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#endif
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else
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{
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ret = -EAFNOSUPPORT;
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}
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return ret < 0 ? ret : len;
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default:
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ret = -ENOSYS;
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break;
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}
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#endif
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/* REVISIT: Not implemented */
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/* On success, return the size of the request that was processed */
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return -ENOSYS;
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if (ret >= 0)
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{
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ret = len;
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}
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return ret;
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}
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/****************************************************************************
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@ -1022,6 +1069,7 @@ ssize_t netlink_route_recvfrom(FAR struct socket *psock,
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switch (entry->msg.nlmsg_type)
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{
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#ifndef CONFIG_NETLINK_DISABLE_GETLINK
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case RTM_NEWLINK:
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{
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FAR struct getlink_recvfrom_rsplist_s *resp =
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@ -1046,8 +1094,9 @@ ssize_t netlink_route_recvfrom(FAR struct socket *psock,
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ret = resp->payload.hdr.nlmsg_len;
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}
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break;
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#endif
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#if defined(CONFIG_NET_ARP) || defined(CONFIG_NET_IPv6)
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#ifndef CONFIG_NETLINK_DISABLE_GETNEIGH
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case RTM_GETNEIGH:
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{
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FAR struct getneigh_recvfrom_rsplist_s *resp =
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@ -1074,7 +1123,7 @@ ssize_t netlink_route_recvfrom(FAR struct socket *psock,
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break;
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#endif
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#ifdef CONFIG_NET_ROUTE
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#ifndef CONFIG_NETLINK_DISABLE_GETROUTE
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case RTM_NEWROUTE:
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{
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FAR struct getroute_recvfrom_resplist_s *resp =
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@ -1101,6 +1150,7 @@ ssize_t netlink_route_recvfrom(FAR struct socket *psock,
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break;
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#endif
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#ifndef NETLINK_DISABLE_NLMSGDONE
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case NLMSG_DONE:
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{
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FAR struct nlroute_msgdone_rsplist_s *resp =
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@ -1126,6 +1176,7 @@ ssize_t netlink_route_recvfrom(FAR struct socket *psock,
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ret = sizeof(struct nlmsghdr);
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}
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break;
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#endif
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default:
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nerr("ERROR: Unrecognized message type: %u\n",
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