diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/netinet/ip_mroute.c | 280 | ||||
| -rw-r--r-- | sys/netinet/ip_mroute.h | 17 |
2 files changed, 11 insertions, 286 deletions
diff --git a/sys/netinet/ip_mroute.c b/sys/netinet/ip_mroute.c index fb761671975..565e4631bbe 100644 --- a/sys/netinet/ip_mroute.c +++ b/sys/netinet/ip_mroute.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ip_mroute.c,v 1.54 2009/07/09 13:04:29 michele Exp $ */ +/* $OpenBSD: ip_mroute.c,v 1.55 2009/07/13 19:14:29 michele Exp $ */ /* $NetBSD: ip_mroute.c,v 1.85 2004/04/26 01:31:57 matt Exp $ */ /* @@ -131,7 +131,6 @@ u_int mrtdebug = 0; /* debug level */ #define VIFI_INVALID ((vifi_t) -1) -u_int tbfdebug = 0; /* tbf debug level */ #ifdef RSVP_ISI u_int rsvpdebug = 0; /* rsvp debug level */ extern struct socket *ip_rsvpd; @@ -142,12 +141,6 @@ extern int rsvp_on; #define UPCALL_EXPIRE 6 /* number of timeouts */ struct timeout expire_upcalls_ch; -/* - * Define the token bucket filter structures - */ - -#define TBF_REPROCESS (hz / 100) /* 100x / second */ - static int get_sg_cnt(struct sioc_sg_req *); static int get_vif_cnt(struct sioc_vif_req *); static int ip_mrouter_init(struct socket *, struct mbuf *); @@ -177,15 +170,7 @@ static int ip_mdq(struct mbuf *, struct ifnet *, struct mfc *); #endif static void phyint_send(struct ip *, struct vif *, struct mbuf *); static void encap_send(struct ip *, struct vif *, struct mbuf *); -static void tbf_control(struct vif *, struct mbuf *, struct ip *, - u_int32_t); -static void tbf_queue(struct vif *, struct mbuf *); -static void tbf_process_q(struct vif *); -static void tbf_reprocess_q(void *); -static int tbf_dq_sel(struct vif *, struct ip *); -static void tbf_send_packet(struct vif *, struct mbuf *); -static void tbf_update_tokens(struct vif *); -static int priority(struct vif *, struct ip *); +static void send_packet(struct vif *, struct mbuf *); /* * Bandwidth monitoring @@ -882,18 +867,8 @@ add_vif(struct mbuf *m) s = splsoftnet(); - /* Define parameters for the tbf structure. */ - vifp->tbf_q = NULL; - vifp->tbf_t = &vifp->tbf_q; - microtime(&vifp->tbf_last_pkt_t); - vifp->tbf_n_tok = 0; - vifp->tbf_q_len = 0; - vifp->tbf_max_q_len = MAXQSIZE; - vifp->v_flags = vifcp->vifc_flags; vifp->v_threshold = vifcp->vifc_threshold; - /* scaling up here allows division by 1024 in critical code */ - vifp->v_rate_limit = vifcp->vifc_rate_limit * 1024 / 1000; vifp->v_lcl_addr = vifcp->vifc_lcl_addr; vifp->v_rmt_addr = vifcp->vifc_rmt_addr; vifp->v_ifp = ifp; @@ -918,13 +893,12 @@ add_vif(struct mbuf *m) if (mrtdebug) log(LOG_DEBUG, "add_vif #%d, lcladdr %x, %s %x, " - "thresh %x, rate %d\n", + "thresh %x\n", vifcp->vifc_vifi, ntohl(vifcp->vifc_lcl_addr.s_addr), (vifcp->vifc_flags & VIFF_TUNNEL) ? "rmtaddr" : "mask", ntohl(vifcp->vifc_rmt_addr.s_addr), - vifcp->vifc_threshold, - vifcp->vifc_rate_limit); + vifcp->vifc_threshold); return (0); } @@ -932,20 +906,9 @@ add_vif(struct mbuf *m) void reset_vif(struct vif *vifp) { - struct mbuf *m, *n; struct ifnet *ifp; struct ifreq ifr; - timeout_set(&vifp->v_repq_ch, tbf_reprocess_q, vifp); - - /* - * Free packets queued at the interface - */ - for (m = vifp->tbf_q; m != NULL; m = n) { - n = m->m_nextpkt; - m_freem(m); - } - if (vifp->v_flags & VIFF_TUNNEL) { /* empty */ } else if (vifp->v_flags & VIFF_REGISTER) { @@ -1835,11 +1798,7 @@ phyint_send(struct ip *ip, struct vif *vifp, struct mbuf *m) if (mb_copy == NULL) return; - if (vifp->v_rate_limit <= 0) - tbf_send_packet(vifp, mb_copy); - else - tbf_control(vifp, mb_copy, mtod(mb_copy, struct ip *), - ntohs(ip->ip_len)); + send_packet(vifp, mb_copy); } static void @@ -1899,155 +1858,11 @@ encap_send(struct ip *ip, struct vif *vifp, struct mbuf *m) ip->ip_sum = in_cksum(mb_copy, ip->ip_hl << 2); mb_copy->m_data -= sizeof(multicast_encap_iphdr); - if (vifp->v_rate_limit <= 0) - tbf_send_packet(vifp, mb_copy); - else - tbf_control(vifp, mb_copy, ip, ntohs(ip_copy->ip_len)); -} - -/* - * Token bucket filter module - */ -static void -tbf_control(struct vif *vifp, struct mbuf *m, struct ip *ip, u_int32_t len) -{ - - if (len > MAX_BKT_SIZE) { - /* drop if packet is too large */ - mrtstat.mrts_pkt2large++; - m_freem(m); - return; - } - - tbf_update_tokens(vifp); - - /* - * If there are enough tokens, and the queue is empty, send this packet - * out immediately. Otherwise, try to insert it on this vif's queue. - */ - if (vifp->tbf_q_len == 0) { - if (len <= vifp->tbf_n_tok) { - vifp->tbf_n_tok -= len; - tbf_send_packet(vifp, m); - } else { - /* queue packet and timeout till later */ - tbf_queue(vifp, m); - timeout_add(&vifp->v_repq_ch, TBF_REPROCESS); - } - } else { - if (vifp->tbf_q_len >= vifp->tbf_max_q_len && - !tbf_dq_sel(vifp, ip)) { - /* queue full, and couldn't make room */ - mrtstat.mrts_q_overflow++; - m_freem(m); - } else { - /* queue length low enough, or made room */ - tbf_queue(vifp, m); - tbf_process_q(vifp); - } - } -} - -/* - * adds a packet to the queue at the interface - */ -static void -tbf_queue(struct vif *vifp, struct mbuf *m) -{ - int s = splsoftnet(); - - /* insert at tail */ - *vifp->tbf_t = m; - vifp->tbf_t = &m->m_nextpkt; - vifp->tbf_q_len++; - - splx(s); -} - - -/* - * processes the queue at the interface - */ -static void -tbf_process_q(struct vif *vifp) -{ - struct mbuf *m; - int len; - int s = splsoftnet(); - - /* - * Loop through the queue at the interface and send as many packets - * as possible. - */ - for (m = vifp->tbf_q; m != NULL; m = vifp->tbf_q) { - len = ntohs(mtod(m, struct ip *)->ip_len); - - /* determine if the packet can be sent */ - if (len <= vifp->tbf_n_tok) { - /* if so, - * reduce no of tokens, dequeue the packet, - * send the packet. - */ - if ((vifp->tbf_q = m->m_nextpkt) == NULL) - vifp->tbf_t = &vifp->tbf_q; - --vifp->tbf_q_len; - - m->m_nextpkt = NULL; - vifp->tbf_n_tok -= len; - tbf_send_packet(vifp, m); - } else - break; - } - splx(s); -} - -static void -tbf_reprocess_q(void *arg) -{ - struct vif *vifp = arg; - - if (ip_mrouter == NULL) - return; - - tbf_update_tokens(vifp); - tbf_process_q(vifp); - - if (vifp->tbf_q_len != 0) - timeout_add(&vifp->v_repq_ch, TBF_REPROCESS); -} - -/* function that will selectively discard a member of the queue - * based on the precedence value and the priority - */ -static int -tbf_dq_sel(struct vif *vifp, struct ip *ip) -{ - u_int p; - struct mbuf **mp, *m; - int s = splsoftnet(); - - p = priority(vifp, ip); - - for (mp = &vifp->tbf_q, m = *mp; - m != NULL; - mp = &m->m_nextpkt, m = *mp) { - if (p > priority(vifp, mtod(m, struct ip *))) { - if ((*mp = m->m_nextpkt) == NULL) - vifp->tbf_t = mp; - --vifp->tbf_q_len; - - m_freem(m); - mrtstat.mrts_drop_sel++; - splx(s); - return (1); - } - } - splx(s); - return (0); + send_packet(vifp, mb_copy); } static void -tbf_send_packet(struct vif *vifp, struct mbuf *m) +send_packet(struct vif *vifp, struct mbuf *m) { int error; int s = splsoftnet(); @@ -2065,7 +1880,7 @@ tbf_send_packet(struct vif *vifp, struct mbuf *m) struct ip_moptions imo; imo.imo_multicast_ifp = vifp->v_ifp; - imo.imo_multicast_ttl = mtod(m, struct ip *)->ip_ttl - 1; + imo.imo_multicast_ttl = mtod(m, struct ip *)->ip_ttl - IPTTLDEC; imo.imo_multicast_loop = 1; #ifdef RSVP_ISI imo.imo_multicast_vif = -1; @@ -2082,80 +1897,6 @@ tbf_send_packet(struct vif *vifp, struct mbuf *m) splx(s); } -/* determine the current time and then - * the elapsed time (between the last time and time now) - * in milliseconds & update the no. of tokens in the bucket - */ -static void -tbf_update_tokens(struct vif *vifp) -{ - struct timeval tp; - u_int32_t tm; - int s = splsoftnet(); - - microtime(&tp); - - TV_DELTA(tp, vifp->tbf_last_pkt_t, tm); - - /* - * This formula is actually - * "time in seconds" * "bytes/second". - * - * (tm / 1000000) * (v_rate_limit * 1000 * (1000/1024) / 8) - * - * The (1000/1024) was introduced in add_vif to optimize - * this divide into a shift. - */ - vifp->tbf_n_tok += tm * vifp->v_rate_limit / 8192; - vifp->tbf_last_pkt_t = tp; - - if (vifp->tbf_n_tok > MAX_BKT_SIZE) - vifp->tbf_n_tok = MAX_BKT_SIZE; - - splx(s); -} - -static int -priority(struct vif *vifp, struct ip *ip) -{ - int prio = 50; /* the lowest priority -- default case */ - - /* temporary hack; may add general packet classifier some day */ - - /* - * The UDP port space is divided up into four priority ranges: - * [0, 16384) : unclassified - lowest priority - * [16384, 32768) : audio - highest priority - * [32768, 49152) : whiteboard - medium priority - * [49152, 65536) : video - low priority - */ - if (ip->ip_p == IPPROTO_UDP) { - struct udphdr *udp = - (struct udphdr *)(((char *)ip) + (ip->ip_hl << 2)); - - switch (ntohs(udp->uh_dport) & 0xc000) { - case 0x4000: - prio = 70; - break; - case 0x8000: - prio = 60; - break; - case 0xc000: - prio = 55; - break; - } - - if (tbfdebug > 1) - log(LOG_DEBUG, "port %x prio %d\n", - ntohs(udp->uh_dport), prio); - } - - return (prio); -} - -/* - * End of token bucket filter modifications - */ #ifdef RSVP_ISI int ip_rsvp_vif_init(struct socket *so, struct mbuf *m) @@ -3145,10 +2886,7 @@ pim_register_send_rp(struct ip *ip, struct vif *vifp, pimhdr->pim.pim_cksum = in_cksum(mb_first, sizeof(pim_encap_pimhdr)); mb_first->m_data -= sizeof(pim_encap_iphdr); - if (vifp->v_rate_limit == 0) - tbf_send_packet(vifp, mb_first); - else - tbf_control(vifp, mb_first, ip, ntohs(ip_outer->ip_len)); + send_packet(vifp, mb_first); /* Keep statistics */ pimstat.pims_snd_registers_msgs++; diff --git a/sys/netinet/ip_mroute.h b/sys/netinet/ip_mroute.h index a773288eb86..f55e30199dd 100644 --- a/sys/netinet/ip_mroute.h +++ b/sys/netinet/ip_mroute.h @@ -1,4 +1,4 @@ -/* $OpenBSD: ip_mroute.h,v 1.14 2006/04/25 15:49:35 claudio Exp $ */ +/* $OpenBSD: ip_mroute.h,v 1.15 2009/07/13 19:14:29 michele Exp $ */ /* $NetBSD: ip_mroute.h,v 1.23 2004/04/21 17:49:46 itojun Exp $ */ #ifndef _NETINET_IP_MROUTE_H_ @@ -67,7 +67,7 @@ struct vifctl { vifi_t vifc_vifi; /* the index of the vif to be added */ u_int8_t vifc_flags; /* VIFF_ flags defined above */ u_int8_t vifc_threshold; /* min ttl required to forward on vif */ - u_int32_t vifc_rate_limit; /* max rate */ + u_int32_t vifc_rate_limit; /* ignored */ struct in_addr vifc_lcl_addr;/* local interface address */ struct in_addr vifc_rmt_addr;/* remote address (tunnels only) */ }; @@ -220,15 +220,8 @@ struct mrtstat { * The kernel's virtual-interface structure. */ struct vif { - struct mbuf *tbf_q, **tbf_t; /* packet queue */ - struct timeval tbf_last_pkt_t; /* arr. time of last pkt */ - u_int32_t tbf_n_tok; /* no of tokens in bucket */ - u_int32_t tbf_q_len; /* length of queue at this vif */ - u_int32_t tbf_max_q_len; /* max. queue length */ - u_int8_t v_flags; /* VIFF_ flags defined above */ u_int8_t v_threshold; /* min ttl required to forward on vif */ - u_int32_t v_rate_limit; /* max rate */ struct in_addr v_lcl_addr; /* local interface address */ struct in_addr v_rmt_addr; /* remote address (tunnels only) */ struct ifnet *v_ifp; /* pointer to interface */ @@ -300,12 +293,6 @@ struct rtdetq { #define MAX_UPQ 4 /* max. no of pkts in upcall Q */ /* - * Token bucket filter code - */ -#define MAX_BKT_SIZE 10000 /* 10K bytes size */ -#define MAXQSIZE 10 /* max. no of pkts in token queue */ - -/* * Structure for measuring the bandwidth and sending an upcall if the * measured bandwidth is above or below a threshold. */ |