static int lw_nsnap_send(struct lw_psr_port_priv *psr_ppriv)
{
struct lw_nsnap_port_priv *nsnap_ppriv = lw_nsnap_ppriv_get(psr_ppriv);
int err;
struct sockaddr_ll ll_my;
struct sockaddr_in6 sendto_addr;
struct ns_packet nsp;
err = teamd_getsockname_hwaddr(psr_ppriv->sock, &ll_my,
sizeof(nsp.hwaddr));
if (err)
return err;
memset(&nsp, 0, sizeof(nsp));
/* setup ICMP6 header */
nsp.nsh.nd_ns_type = ND_NEIGHBOR_SOLICIT;
nsp.nsh.nd_ns_cksum = 0; /* kernel computes this */
nsp.nsh.nd_ns_target = nsnap_ppriv->dst.sin6_addr;
nsp.opt.nd_opt_type = ND_OPT_SOURCE_LINKADDR;
nsp.opt.nd_opt_len = 1; /* 8 bytes */
memcpy(nsp.hwaddr, ll_my.sll_addr, sizeof(nsp.hwaddr));
sendto_addr = nsnap_ppriv->dst;
compute_multi_in6_addr(&sendto_addr.sin6_addr);
sendto_addr.sin6_scope_id = psr_ppriv->common.tdport->ifindex;
err = teamd_sendto(nsnap_ppriv->tx_sock, &nsp, sizeof(nsp), 0,
(struct sockaddr *) &sendto_addr,
sizeof(sendto_addr));
return err;
}
static int __get_port_curr_hwaddr(struct lw_psr_port_priv *psr_ppriv,
struct sockaddr_ll *addr, size_t expected_len)
{
struct team_ifinfo *ifinfo = psr_ppriv->common.tdport->team_ifinfo;
size_t port_hwaddr_len = team_get_ifinfo_hwaddr_len(ifinfo);
char *port_hwaddr = team_get_ifinfo_hwaddr(ifinfo);
int err;
err = teamd_getsockname_hwaddr(psr_ppriv->sock, addr, expected_len);
if (err)
return err;
if ((addr->sll_halen != port_hwaddr_len) ||
(expected_len && expected_len != port_hwaddr_len)) {
teamd_log_err("Unexpected length of hw address.");
return -ENOTSUP;
}
memcpy(addr->sll_addr, port_hwaddr, addr->sll_halen);
return 0;
}
