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https://github.com/RIOT-OS/RIOT.git
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gnrc_ndp2: port to gnrc_netif2
This commit is contained in:
Martine Lenders
parent
fb7fcfdd10
commit
c3141c46b6
@ -256,6 +256,7 @@ endif
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ifneq (,$(filter gnrc_ndp2,$(USEMODULE)))
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USEMODULE += gnrc_icmpv6
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USEMODULE += gnrc_netif2
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endif
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ifneq (,$(filter gnrc_icmpv6_echo,$(USEMODULE)))
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@ -24,8 +24,9 @@
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#include "kernel_types.h"
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#include "net/gnrc/pkt.h"
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#include "net/gnrc/ipv6/netif.h"
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#include "net/gnrc/netif2.h"
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#include "net/ipv6/addr.h"
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#include "net/ipv6/hdr.h"
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#ifdef __cplusplus
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extern "C" {
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@ -269,7 +270,7 @@ gnrc_pktsnip_t *gnrc_ndp2_opt_mtu_build(uint32_t mtu, gnrc_pktsnip_t *next);
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* for a neighbor solicitation so be sure to check that.
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* **Will be released** in an error case.
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*/
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void gnrc_ndp2_nbr_sol_send(const ipv6_addr_t *tgt, gnrc_ipv6_netif_t *netif,
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void gnrc_ndp2_nbr_sol_send(const ipv6_addr_t *tgt, gnrc_netif2_t *netif,
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const ipv6_addr_t *src, const ipv6_addr_t *dst,
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gnrc_pktsnip_t *ext_opts);
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@ -315,7 +316,7 @@ void gnrc_ndp2_nbr_sol_send(const ipv6_addr_t *tgt, gnrc_ipv6_netif_t *netif,
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* check that.
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* **Will be released** in an error case.
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*/
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void gnrc_ndp2_nbr_adv_send(const ipv6_addr_t *tgt, gnrc_ipv6_netif_t *netif,
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void gnrc_ndp2_nbr_adv_send(const ipv6_addr_t *tgt, gnrc_netif2_t *netif,
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const ipv6_addr_t *dst, bool supply_tl2a,
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gnrc_pktsnip_t *ext_opts);
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@ -328,7 +329,7 @@ void gnrc_ndp2_nbr_adv_send(const ipv6_addr_t *tgt, gnrc_ipv6_netif_t *netif,
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* @param[in] netif Interface to send over. May not be NULL.
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* @param[in] dst Destination for the router solicitation. ff02::2 if NULL.
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*/
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void gnrc_ndp2_rtr_sol_send(gnrc_ipv6_netif_t *netif, const ipv6_addr_t *dst);
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void gnrc_ndp2_rtr_sol_send(gnrc_netif2_t *netif, const ipv6_addr_t *dst);
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/**
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* @brief Send pre-compiled router advertisement depending on a given network
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@ -355,7 +356,7 @@ void gnrc_ndp2_rtr_sol_send(gnrc_ipv6_netif_t *netif, const ipv6_addr_t *dst);
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* for a neighbor advertisement so be sure to check that.
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* **Will be released** in an error case.
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*/
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void gnrc_ndp2_rtr_adv_send(gnrc_ipv6_netif_t *netif, const ipv6_addr_t *src,
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void gnrc_ndp2_rtr_adv_send(gnrc_netif2_t *netif, const ipv6_addr_t *src,
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const ipv6_addr_t *dst, bool fin,
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gnrc_pktsnip_t *ext_opts);
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@ -15,7 +15,7 @@
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#include "net/gnrc/icmpv6.h"
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#include "net/gnrc/ipv6.h"
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#include "net/gnrc/netif.h"
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#include "net/gnrc/netif2/internal.h"
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#ifdef MODULE_GNRC_SIXLOWPAN_ND
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#include "net/gnrc/sixlowpan/nd.h"
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#endif
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@ -167,8 +167,7 @@ gnrc_pktsnip_t *gnrc_ndp2_opt_sl2a_build(const uint8_t *l2addr,
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{
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assert((l2addr != NULL) && (l2addr_len != 0));
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DEBUG("ndp2: building source link-layer address option (l2addr: %s)\n",
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gnrc_netif_addr_to_str(addr_str, sizeof(addr_str), l2addr,
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l2addr_len));
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gnrc_netif2_addr_to_str(l2addr, l2addr_len, addr_str));
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return _opt_l2a_build(l2addr, l2addr_len, next, NDP_OPT_SL2A);
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}
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@ -178,8 +177,7 @@ gnrc_pktsnip_t *gnrc_ndp2_opt_tl2a_build(const uint8_t *l2addr,
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{
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assert((l2addr != NULL) && (l2addr_len != 0));
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DEBUG("ndp2: building target link-layer address option (l2addr: %s)\n",
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gnrc_netif_addr_to_str(addr_str, sizeof(addr_str), l2addr,
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l2addr_len));
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gnrc_netif2_addr_to_str(l2addr, l2addr_len, addr_str));
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return _opt_l2a_build(l2addr, l2addr_len, next, NDP_OPT_TL2A);
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}
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@ -223,14 +221,13 @@ gnrc_pktsnip_t *gnrc_ndp2_opt_mtu_build(uint32_t mtu, gnrc_pktsnip_t *next)
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return pkt;
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}
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static gnrc_pktsnip_t *_build_headers(gnrc_ipv6_netif_t *netif,
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static gnrc_pktsnip_t *_build_headers(gnrc_netif2_t *netif,
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const ipv6_addr_t *src,
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const ipv6_addr_t *dst,
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gnrc_pktsnip_t *payload);
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static size_t _get_l2src(gnrc_ipv6_netif_t *netif, uint8_t *l2src,
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size_t l2src_maxlen);
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static inline size_t _get_l2src(const gnrc_netif2_t *netif, uint8_t *l2src);
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void gnrc_ndp2_nbr_sol_send(const ipv6_addr_t *tgt, gnrc_ipv6_netif_t *netif,
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void gnrc_ndp2_nbr_sol_send(const ipv6_addr_t *tgt, gnrc_netif2_t *netif,
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const ipv6_addr_t *src, const ipv6_addr_t *dst,
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gnrc_pktsnip_t *ext_opts)
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{
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@ -250,49 +247,58 @@ void gnrc_ndp2_nbr_sol_send(const ipv6_addr_t *tgt, gnrc_ipv6_netif_t *netif,
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sizeof(addr_str)));
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DEBUG("tgt: %s, ", ipv6_addr_to_str(addr_str, tgt, sizeof(addr_str)));
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DEBUG("dst: %s)\n", ipv6_addr_to_str(addr_str, dst, sizeof(addr_str)));
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/* check if there is a fitting source address to target */
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if (src == NULL) {
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src = gnrc_ipv6_netif_find_best_src_addr(netif->pid, tgt, false);
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}
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/* add SL2AO based on interface and source address */
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if ((src != NULL) && !ipv6_addr_is_unspecified(src)) {
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l2src_len = _get_l2src(netif, l2src, sizeof(l2src));
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if (l2src_len > 0) {
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/* add source address link-layer address option */
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hdr = gnrc_ndp2_opt_sl2a_build(l2src, l2src_len, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error allocating SL2AO.\n");
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gnrc_pktbuf_release(pkt);
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return;
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}
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pkt = hdr;
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gnrc_netif2_acquire(netif);
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do { /* XXX hidden goto */
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/* check if there is a fitting source address to target */
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if (src == NULL) {
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src = gnrc_netif2_ipv6_addr_best_src(netif, tgt, false);
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}
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}
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/* add neighbor solicitation header */
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hdr = gnrc_ndp2_nbr_sol_build(tgt, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error allocating neighbor solicitation.\n");
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gnrc_pktbuf_release(pkt);
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/* add SL2AO based on interface and source address */
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if ((src != NULL) && !ipv6_addr_is_unspecified(src)) {
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l2src_len = _get_l2src(netif, l2src);
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if (l2src_len > 0) {
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/* add source address link-layer address option */
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hdr = gnrc_ndp2_opt_sl2a_build(l2src, l2src_len, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error allocating SL2AO.\n");
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break;
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}
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pkt = hdr;
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}
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}
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/* add neighbor solicitation header */
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hdr = gnrc_ndp2_nbr_sol_build(tgt, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error allocating neighbor solicitation.\n");
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break;
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}
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pkt = hdr;
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/* add remaining headers */
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hdr = _build_headers(netif, src, dst, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error adding lower-layer headers.\n");
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break;
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}
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else {
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pkt = hdr;
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if (gnrc_netapi_dispatch_send(GNRC_NETTYPE_NDP2,
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GNRC_NETREG_DEMUX_CTX_ALL,
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pkt) == 0) {
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DEBUG("ndp2: unable to send neighbor solicitation\n");
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break;
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}
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}
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gnrc_netif2_release(netif);
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return;
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}
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pkt = hdr;
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/* add remaining headers */
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hdr = _build_headers(netif, src, dst, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error adding lower-layer headers.\n");
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gnrc_pktbuf_release(pkt);
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}
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else if (gnrc_netapi_dispatch_send(GNRC_NETTYPE_NDP2,
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GNRC_NETREG_DEMUX_CTX_ALL, hdr) == 0) {
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DEBUG("ndp2: unable to send neighbor solicitation\n");
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gnrc_pktbuf_release(hdr);
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}
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} while (0);
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gnrc_pktbuf_release(pkt);
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gnrc_netif2_release(netif);
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}
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void gnrc_ndp2_nbr_adv_send(const ipv6_addr_t *tgt, gnrc_ipv6_netif_t *netif,
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void gnrc_ndp2_nbr_adv_send(const ipv6_addr_t *tgt, gnrc_netif2_t *netif,
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const ipv6_addr_t *dst, bool supply_tl2a,
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gnrc_pktsnip_t *ext_opts)
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{
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@ -307,68 +313,83 @@ void gnrc_ndp2_nbr_adv_send(const ipv6_addr_t *tgt, gnrc_ipv6_netif_t *netif,
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ipv6_addr_to_str(addr_str, tgt, sizeof(addr_str)));
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DEBUG("dst: %s, supply_tl2a: %d)\n",
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ipv6_addr_to_str(addr_str, dst, sizeof(addr_str)), supply_tl2a);
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if ((netif->flags & GNRC_IPV6_NETIF_FLAGS_ROUTER) &&
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(netif->flags & GNRC_IPV6_NETIF_FLAGS_RTR_ADV)) {
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adv_flags |= NDP_NBR_ADV_FLAGS_R;
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}
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if (ipv6_addr_is_unspecified(dst)) {
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memcpy(&real_dst, &ipv6_addr_all_nodes_link_local, sizeof(ipv6_addr_t));
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supply_tl2a = true;
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}
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else {
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memcpy(&real_dst, dst, sizeof(real_dst));
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adv_flags |= NDP_NBR_ADV_FLAGS_S;
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}
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/* add SL2AO based on target address */
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if (supply_tl2a) {
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uint8_t l2tgt[8];
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size_t l2tgt_len;
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/* we previously checked if we are the target, so we can take our L2tgt */
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l2tgt_len = _get_l2src(netif, l2tgt, sizeof(l2tgt));
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gnrc_netif2_acquire(netif);
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do { /* XXX: hidden goto */
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int tgt_idx;
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if (l2tgt_len > 0) {
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/* add target address link-layer address option */
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hdr = gnrc_ndp2_opt_tl2a_build(l2tgt, l2tgt_len, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error allocating TL2AO.\n");
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gnrc_pktbuf_release(ext_opts);
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return;
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}
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pkt = hdr;
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if ((tgt_idx = gnrc_netif2_ipv6_addr_idx(netif, tgt)) < 0) {
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DEBUG("ndp2: tgt not assigned to interface. Abort sending\n");
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break;
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}
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}
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/* TODO: also check if the node provides proxy services for tgt */
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if ((pkt != NULL) &&
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(!gnrc_ipv6_netif_addr_is_non_unicast(tgt) || supply_tl2a)) {
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/* TL2A is not supplied and tgt is not anycast */
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adv_flags |= NDP_NBR_ADV_FLAGS_O;
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}
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/* add neighbor advertisement header */
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hdr = gnrc_ndp2_nbr_adv_build(tgt, adv_flags, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error allocating neighbor advertisement.\n");
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gnrc_pktbuf_release(pkt);
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if (gnrc_netif2_is_rtr(netif) && gnrc_netif2_is_rtr_adv(netif)) {
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adv_flags |= NDP_NBR_ADV_FLAGS_R;
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}
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if (ipv6_addr_is_unspecified(dst)) {
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memcpy(&real_dst, &ipv6_addr_all_nodes_link_local,
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sizeof(ipv6_addr_t));
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supply_tl2a = true;
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}
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else {
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memcpy(&real_dst, dst, sizeof(real_dst));
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adv_flags |= NDP_NBR_ADV_FLAGS_S;
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}
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/* add SL2AO based on target address */
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if (supply_tl2a) {
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uint8_t l2tgt[8];
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size_t l2tgt_len;
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/* we previously checked if we are the target, so we can take our L2tgt */
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l2tgt_len = _get_l2src(netif, l2tgt);
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if (l2tgt_len > 0) {
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/* add target address link-layer address option */
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hdr = gnrc_ndp2_opt_tl2a_build(l2tgt, l2tgt_len, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error allocating TL2AO.\n");
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break;
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}
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pkt = hdr;
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}
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}
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/* TODO: also check if the node provides proxy servies for tgt */
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if ((pkt != NULL) &&
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(netif->ipv6.addrs_flags[tgt_idx] &
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GNRC_NETIF2_IPV6_ADDRS_FLAGS_ANYCAST)) {
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/* TL2A is not supplied and tgt is not anycast */
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adv_flags |= NDP_NBR_ADV_FLAGS_O;
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}
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/* add neighbor advertisement header */
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hdr = gnrc_ndp2_nbr_adv_build(tgt, adv_flags, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error allocating neighbor advertisement.\n");
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break;
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}
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pkt = hdr;
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/* add remaining headers */
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hdr = _build_headers(netif, NULL, &real_dst, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error adding lower-layer headers.\n");
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break;
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}
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else {
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pkt = hdr;
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if (gnrc_netapi_dispatch_send(GNRC_NETTYPE_NDP2,
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GNRC_NETREG_DEMUX_CTX_ALL,
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pkt) == 0) {
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DEBUG("ndp2: unable to send neighbor advertisement\n");
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break;
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}
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}
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gnrc_netif2_release(netif);
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return;
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}
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pkt = hdr;
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/* add remaining headers */
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hdr = _build_headers(netif, NULL, &real_dst, pkt);
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if (hdr == NULL) {
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DEBUG("ndp2: error adding lower-layer headers.\n");
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gnrc_pktbuf_release(pkt);
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}
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else if (gnrc_netapi_dispatch_send(GNRC_NETTYPE_NDP2,
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GNRC_NETREG_DEMUX_CTX_ALL, hdr) == 0) {
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DEBUG("ndp2: unable to send neighbor advertisement\n");
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gnrc_pktbuf_release(hdr);
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}
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} while (0);
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gnrc_pktbuf_release(pkt);
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gnrc_netif2_release(netif);
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}
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void gnrc_ndp2_rtr_sol_send(gnrc_ipv6_netif_t *netif, const ipv6_addr_t *dst)
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void gnrc_ndp2_rtr_sol_send(gnrc_netif2_t *netif, const ipv6_addr_t *dst)
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{
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gnrc_pktsnip_t *hdr, *pkt = NULL;
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ipv6_addr_t *src = NULL;
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assert(netif != NULL);
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if (dst == NULL) {
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@ -377,43 +398,53 @@ void gnrc_ndp2_rtr_sol_send(gnrc_ipv6_netif_t *netif, const ipv6_addr_t *dst)
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DEBUG("ndp2: send router solicitation (iface: %" PRIkernel_pid
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", dst: %s)\n", netif->pid,
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ipv6_addr_to_str(addr_str, dst, sizeof(addr_str)));
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/* add SL2AO => check if there is a fitting source address to target */
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if ((src = gnrc_ipv6_netif_find_best_src_addr(netif->pid, dst,
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false)) != NULL) {
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uint8_t l2src[8];
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size_t l2src_len = _get_l2src(netif, l2src, sizeof(l2src));
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if (l2src_len > 0) {
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/* add source address link-layer address option */
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pkt = gnrc_ndp2_opt_sl2a_build(l2src, l2src_len, NULL);
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if (pkt == NULL) {
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DEBUG("ndp2: error allocating SL2AO.\n");
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gnrc_pktbuf_release(pkt);
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return;
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gnrc_netif2_acquire(netif);
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do { /* XXX: hidden goto */
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ipv6_addr_t *src = NULL;
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/* add SL2AO => check if there is a fitting source address to target */
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if ((src = gnrc_netif2_ipv6_addr_best_src(netif, dst, false)) != NULL) {
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uint8_t l2src[8];
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size_t l2src_len = _get_l2src(netif, l2src);
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if (l2src_len > 0) {
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/* add source address link-layer address option */
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pkt = gnrc_ndp2_opt_sl2a_build(l2src, l2src_len, NULL);
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if (pkt == NULL) {
|
||||
DEBUG("ndp2: error allocating SL2AO.\n");
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/* add router solicitation header */
|
||||
hdr = gnrc_ndp2_rtr_sol_build(pkt);
|
||||
if (hdr == NULL) {
|
||||
DEBUG("ndp2: error allocating router solicitation.\n");
|
||||
gnrc_pktbuf_release(pkt);
|
||||
/* add router solicitation header */
|
||||
hdr = gnrc_ndp2_rtr_sol_build(pkt);
|
||||
if (hdr == NULL) {
|
||||
DEBUG("ndp2: error allocating router solicitation.\n");
|
||||
break;
|
||||
}
|
||||
pkt = hdr;
|
||||
/* add remaining headers */
|
||||
hdr = _build_headers(netif, src, dst, pkt);
|
||||
if (hdr == NULL) {
|
||||
DEBUG("ndp2: error adding lower-layer headers.\n");
|
||||
break;
|
||||
}
|
||||
else {
|
||||
pkt = hdr;
|
||||
if (gnrc_netapi_dispatch_send(GNRC_NETTYPE_NDP2,
|
||||
GNRC_NETREG_DEMUX_CTX_ALL,
|
||||
pkt) == 0) {
|
||||
DEBUG("ndp2: unable to send router advertisement\n");
|
||||
break;
|
||||
}
|
||||
}
|
||||
gnrc_netif2_release(netif);
|
||||
return;
|
||||
}
|
||||
pkt = hdr;
|
||||
/* add remaining headers */
|
||||
hdr = _build_headers(netif, src, dst, pkt);
|
||||
if (hdr == NULL) {
|
||||
DEBUG("ndp2: error adding lower-layer headers.\n");
|
||||
gnrc_pktbuf_release(pkt);
|
||||
}
|
||||
else if (gnrc_netapi_dispatch_send(GNRC_NETTYPE_NDP2,
|
||||
GNRC_NETREG_DEMUX_CTX_ALL, hdr) == 0) {
|
||||
DEBUG("ndp2: unable to send router advertisement\n");
|
||||
gnrc_pktbuf_release(hdr);
|
||||
}
|
||||
} while (0);
|
||||
gnrc_pktbuf_release(pkt);
|
||||
gnrc_netif2_release(netif);
|
||||
}
|
||||
|
||||
void gnrc_ndp2_rtr_adv_send(gnrc_ipv6_netif_t *netif, const ipv6_addr_t *src,
|
||||
void gnrc_ndp2_rtr_adv_send(gnrc_netif2_t *netif, const ipv6_addr_t *src,
|
||||
const ipv6_addr_t *dst, bool fin,
|
||||
gnrc_pktsnip_t *ext_opts)
|
||||
{
|
||||
@ -422,6 +453,7 @@ void gnrc_ndp2_rtr_adv_send(gnrc_ipv6_netif_t *netif, const ipv6_addr_t *src,
|
||||
uint32_t reach_time = 0, retrans_timer = 0;
|
||||
uint16_t adv_ltime = 0;
|
||||
uint8_t cur_hl = 0;
|
||||
uint8_t flags = 0;
|
||||
|
||||
if (dst == NULL) {
|
||||
dst = &ipv6_addr_all_nodes_link_local;
|
||||
@ -429,78 +461,91 @@ void gnrc_ndp2_rtr_adv_send(gnrc_ipv6_netif_t *netif, const ipv6_addr_t *src,
|
||||
DEBUG("ndp2: send router advertisement (iface: %" PRIkernel_pid ", dst: %s%s\n",
|
||||
netif->pid, ipv6_addr_to_str(addr_str, dst, sizeof(addr_str)),
|
||||
fin ? ", final" : "");
|
||||
if (netif->flags & GNRC_IPV6_NETIF_FLAGS_ADV_MTU) {
|
||||
if ((hdr = gnrc_ndp2_opt_mtu_build(netif->mtu, pkt)) == NULL) {
|
||||
DEBUG("ndp rtr: no space left in packet buffer\n");
|
||||
return;
|
||||
}
|
||||
pkt = hdr;
|
||||
}
|
||||
if (src == NULL) {
|
||||
/* get address from source selection algorithm.
|
||||
* Only link local addresses may be used (RFC 4861 section 4.1) */
|
||||
src = gnrc_ipv6_netif_find_best_src_addr(netif->pid, dst, true);
|
||||
}
|
||||
/* add SL2A for source address */
|
||||
if (src != NULL) {
|
||||
DEBUG(" - SL2A\n");
|
||||
uint8_t l2src[8];
|
||||
size_t l2src_len;
|
||||
/* optimization note: MAY also be omitted to facilitate in-bound load balancing over
|
||||
* replicated interfaces.
|
||||
* source: https://tools.ietf.org/html/rfc4861#section-6.2.3 */
|
||||
l2src_len = _get_l2src(netif, l2src, sizeof(l2src));
|
||||
if (l2src_len > 0) {
|
||||
/* add source address link-layer address option */
|
||||
hdr = gnrc_ndp2_opt_sl2a_build(l2src, l2src_len, pkt);
|
||||
|
||||
if (hdr == NULL) {
|
||||
DEBUG("ndp2: error allocating Source Link-layer address option.\n");
|
||||
gnrc_pktbuf_release(pkt);
|
||||
return;
|
||||
gnrc_netif2_acquire(netif);
|
||||
do { /* XXX: hidden goto */
|
||||
if (netif->flags & GNRC_NETIF2_FLAGS_IPV6_ADV_MTU) {
|
||||
if ((hdr = gnrc_ndp2_opt_mtu_build(netif->ipv6.mtu, pkt)) == NULL) {
|
||||
DEBUG("ndp rtr: no space left in packet buffer\n");
|
||||
break;
|
||||
}
|
||||
pkt = hdr;
|
||||
}
|
||||
}
|
||||
if (netif->flags & GNRC_IPV6_NETIF_FLAGS_ADV_CUR_HL) {
|
||||
cur_hl = netif->cur_hl;
|
||||
}
|
||||
if (netif->flags & GNRC_IPV6_NETIF_FLAGS_ADV_REACH_TIME) {
|
||||
if (src == NULL) {
|
||||
/* get address from source selection algorithm.
|
||||
* Only link local addresses may be used (RFC 4861 section 4.1) */
|
||||
src = gnrc_netif2_ipv6_addr_best_src(netif, dst, true);
|
||||
}
|
||||
/* add SL2A for source address */
|
||||
if (src != NULL) {
|
||||
DEBUG(" - SL2A\n");
|
||||
uint8_t l2src[8];
|
||||
size_t l2src_len;
|
||||
/* optimization note: MAY also be omitted to facilitate in-bound load balancing over
|
||||
* replicated interfaces.
|
||||
* source: https://tools.ietf.org/html/rfc4861#section-6.2.3 */
|
||||
l2src_len = _get_l2src(netif, l2src);
|
||||
if (l2src_len > 0) {
|
||||
/* add source address link-layer address option */
|
||||
hdr = gnrc_ndp2_opt_sl2a_build(l2src, l2src_len, pkt);
|
||||
|
||||
if (netif->reach_time > (3600 * US_PER_SEC)) { /* reach_time > 1 hour */
|
||||
reach_time = (3600 * MS_PER_SEC);
|
||||
if (hdr == NULL) {
|
||||
DEBUG("ndp2: error allocating Source Link-layer address "
|
||||
"option.\n");
|
||||
break;
|
||||
}
|
||||
pkt = hdr;
|
||||
}
|
||||
}
|
||||
if (netif->flags & GNRC_NETIF2_FLAGS_IPV6_ADV_CUR_HL) {
|
||||
cur_hl = netif->cur_hl;
|
||||
}
|
||||
if (netif->flags & GNRC_NETIF2_FLAGS_IPV6_ADV_REACH_TIME) {
|
||||
if (netif->ipv6.reach_time_base > (3600 * MS_PER_SEC)) {
|
||||
/* reach_time > 1 hour */
|
||||
reach_time = (3600 * MS_PER_SEC);
|
||||
}
|
||||
else {
|
||||
reach_time = netif->ipv6.reach_time_base;
|
||||
}
|
||||
}
|
||||
if (netif->flags & GNRC_NETIF2_FLAGS_IPV6_ADV_RETRANS_TIMER) {
|
||||
retrans_timer = netif->ipv6.retrans_time;
|
||||
}
|
||||
if (!fin) {
|
||||
adv_ltime = netif->ipv6.rtr_ltime;
|
||||
}
|
||||
if (netif->ipv6.aac_mode == GNRC_NETIF2_AAC_DHCP) {
|
||||
flags |= NDP_RTR_ADV_FLAGS_M;
|
||||
if (netif->flags & GNRC_NETIF2_FLAGS_IPV6_ADV_O_FLAG) {
|
||||
flags |= NDP_RTR_ADV_FLAGS_O;
|
||||
}
|
||||
}
|
||||
hdr = gnrc_ndp2_rtr_adv_build(cur_hl, flags, adv_ltime, reach_time,
|
||||
retrans_timer, pkt);
|
||||
if (hdr == NULL) {
|
||||
DEBUG("ndp2: error allocating router advertisement.\n");
|
||||
break;
|
||||
}
|
||||
pkt = hdr;
|
||||
hdr = _build_headers(netif, src, dst, pkt);
|
||||
if (hdr == NULL) {
|
||||
DEBUG("ndp2: error adding lower-layer headers.\n");
|
||||
break;
|
||||
}
|
||||
else {
|
||||
reach_time = netif->reach_time / US_PER_MS;
|
||||
pkt = hdr;
|
||||
if (gnrc_netapi_dispatch_send(GNRC_NETTYPE_NDP2,
|
||||
GNRC_NETREG_DEMUX_CTX_ALL,
|
||||
pkt) == 0) {
|
||||
DEBUG("ndp2: unable to send router solicitation\n");
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (netif->flags & GNRC_IPV6_NETIF_FLAGS_ADV_RETRANS_TIMER) {
|
||||
retrans_timer = netif->retrans_timer / US_PER_MS;
|
||||
}
|
||||
if (!fin) {
|
||||
/* TODO set netif dependent adv_ltime */
|
||||
adv_ltime = 1800U;
|
||||
}
|
||||
hdr = gnrc_ndp2_rtr_adv_build(cur_hl,
|
||||
(netif->flags & (GNRC_IPV6_NETIF_FLAGS_OTHER_CONF |
|
||||
GNRC_IPV6_NETIF_FLAGS_MANAGED)) >> 8,
|
||||
adv_ltime, reach_time, retrans_timer, pkt);
|
||||
if (hdr == NULL) {
|
||||
DEBUG("ndp2: error allocating router advertisement.\n");
|
||||
gnrc_pktbuf_release(pkt);
|
||||
gnrc_netif2_release(netif);
|
||||
return;
|
||||
}
|
||||
pkt = hdr;
|
||||
hdr = _build_headers(netif, src, dst, pkt);
|
||||
if (hdr == NULL) {
|
||||
DEBUG("ndp2: error adding lower-layer headers.\n");
|
||||
gnrc_pktbuf_release(pkt);
|
||||
}
|
||||
else if (gnrc_netapi_dispatch_send(GNRC_NETTYPE_NDP2,
|
||||
GNRC_NETREG_DEMUX_CTX_ALL, hdr) == 0) {
|
||||
DEBUG("ndp2: unable to send router solicitation\n");
|
||||
gnrc_pktbuf_release(hdr);
|
||||
}
|
||||
} while (0);
|
||||
gnrc_pktbuf_release(pkt);
|
||||
gnrc_netif2_release(netif);
|
||||
#else
|
||||
(void)netif;
|
||||
(void)src;
|
||||
@ -511,7 +556,7 @@ void gnrc_ndp2_rtr_adv_send(gnrc_ipv6_netif_t *netif, const ipv6_addr_t *src,
|
||||
#endif /* GNRC_IPV6_NIB_CONF_ROUTER */
|
||||
}
|
||||
|
||||
static gnrc_pktsnip_t *_build_headers(gnrc_ipv6_netif_t *netif,
|
||||
static gnrc_pktsnip_t *_build_headers(gnrc_netif2_t *netif,
|
||||
const ipv6_addr_t *src,
|
||||
const ipv6_addr_t *dst,
|
||||
gnrc_pktsnip_t *payload)
|
||||
@ -536,37 +581,16 @@ static gnrc_pktsnip_t *_build_headers(gnrc_ipv6_netif_t *netif,
|
||||
return l2hdr;
|
||||
}
|
||||
|
||||
static size_t _get_l2src(gnrc_ipv6_netif_t *netif, uint8_t *l2src,
|
||||
size_t l2src_maxlen)
|
||||
static inline size_t _get_l2src(const gnrc_netif2_t *netif, uint8_t *l2src)
|
||||
{
|
||||
bool try_long = false;
|
||||
int res;
|
||||
uint16_t l2src_len;
|
||||
/* maximum address length that fits into a minimum length (8) S/TL2A option */
|
||||
const uint16_t max_short_len = 6;
|
||||
|
||||
/* try getting source address */
|
||||
if ((gnrc_netapi_get(netif->pid, NETOPT_SRC_LEN, 0, &l2src_len,
|
||||
sizeof(l2src_len)) >= 0) &&
|
||||
(l2src_len > max_short_len)) {
|
||||
try_long = true;
|
||||
}
|
||||
|
||||
if (try_long && ((res = gnrc_netapi_get(netif->pid, NETOPT_ADDRESS_LONG, 0,
|
||||
l2src,
|
||||
l2src_maxlen)) > max_short_len)) {
|
||||
l2src_len = (uint16_t)res;
|
||||
}
|
||||
else if ((res = gnrc_netapi_get(netif->pid, NETOPT_ADDRESS, 0, l2src,
|
||||
l2src_maxlen)) >= 0) {
|
||||
l2src_len = (uint16_t)res;
|
||||
}
|
||||
else {
|
||||
DEBUG("ndp2: no link-layer address found.\n");
|
||||
l2src_len = 0;
|
||||
}
|
||||
|
||||
return l2src_len;
|
||||
#if GNRC_NETIF2_L2ADDR_MAXLEN > 0
|
||||
memcpy(l2src, netif->l2addr, netif->l2addr_len);
|
||||
return netif->l2addr_len;
|
||||
#else
|
||||
(void)netif;
|
||||
(void)l2src;
|
||||
return 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
/** @} */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user