* terms and conditions of the copyright.
*/
-#include <slirp.h>
-#include "qemu-timer.h"
+#include "qemu/osdep.h"
+#include "slirp.h"
+#include "qemu/timer.h"
static void
ifs_insque(struct mbuf *ifm, struct mbuf *ifmhead)
void
if_init(Slirp *slirp)
{
- slirp->if_fastq.ifq_next = slirp->if_fastq.ifq_prev = &slirp->if_fastq;
- slirp->if_batchq.ifq_next = slirp->if_batchq.ifq_prev = &slirp->if_batchq;
- slirp->next_m = &slirp->if_batchq;
+ slirp->if_fastq.qh_link = slirp->if_fastq.qh_rlink = &slirp->if_fastq;
+ slirp->if_batchq.qh_link = slirp->if_batchq.qh_rlink = &slirp->if_batchq;
+ slirp->next_m = (struct mbuf *) &slirp->if_batchq;
}
/*
int on_fastq = 1;
DEBUG_CALL("if_output");
- DEBUG_ARG("so = %lx", (long)so);
- DEBUG_ARG("ifm = %lx", (long)ifm);
+ DEBUG_ARG("so = %p", so);
+ DEBUG_ARG("ifm = %p", ifm);
/*
* First remove the mbuf from m_usedlist,
* We mustn't put this packet back on the fastq (or we'll send it out of order)
* XXX add cache here?
*/
- for (ifq = slirp->if_batchq.ifq_prev; ifq != &slirp->if_batchq;
+ for (ifq = (struct mbuf *) slirp->if_batchq.qh_rlink;
+ (struct quehead *) ifq != &slirp->if_batchq;
ifq = ifq->ifq_prev) {
if (so == ifq->ifq_so) {
/* A match! */
/* No match, check which queue to put it on */
if (so && (so->so_iptos & IPTOS_LOWDELAY)) {
- ifq = slirp->if_fastq.ifq_prev;
+ ifq = (struct mbuf *) slirp->if_fastq.qh_rlink;
on_fastq = 1;
/*
* Check if this packet is a part of the last
ifs_insque(ifm, ifq->ifs_prev);
goto diddit;
}
- } else
- ifq = slirp->if_batchq.ifq_prev;
+ } else {
+ ifq = (struct mbuf *) slirp->if_batchq.qh_rlink;
+ /* Set next_m if the queue was empty so far */
+ if ((struct quehead *) slirp->next_m == &slirp->if_batchq) {
+ slirp->next_m = ifm;
+ }
+ }
/* Create a new doubly linked list for this session */
ifm->ifq_so = so;
insque(ifm, ifq);
diddit:
- slirp->if_queued++;
-
if (so) {
/* Update *_queued */
so->so_queued++;
/*
* Send a packet
- * We choose a packet based on it's position in the output queues;
+ * We choose a packet based on its position in the output queues;
* If there are packets on the fastq, they are sent FIFO, before
* everything else. Otherwise we choose the first packet from the
* batchq and send it. the next packet chosen will be from the session
*/
void if_start(Slirp *slirp)
{
- uint64_t now = qemu_get_clock_ns(rt_clock);
- int requeued = 0;
- bool from_batchq = false;
- struct mbuf *ifm, *ifqt;
+ uint64_t now = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
+ bool from_batchq, next_from_batchq;
+ struct mbuf *ifm, *ifm_next, *ifqt;
DEBUG_CALL("if_start");
- while (slirp->if_queued) {
- /* check if we can really output */
- if (!slirp_can_output(slirp->opaque))
- return;
-
- /*
- * See which queue to get next packet from
- * If there's something in the fastq, select it immediately
- */
- if (slirp->if_fastq.ifq_next != &slirp->if_fastq) {
- ifm = slirp->if_fastq.ifq_next;
- } else {
- /* Nothing on fastq, see if next_m is valid */
- if (slirp->next_m != &slirp->if_batchq) {
- ifm = slirp->next_m;
- } else {
- ifm = slirp->if_batchq.ifq_next;
- }
+ if (slirp->if_start_busy) {
+ return;
+ }
+ slirp->if_start_busy = true;
+
+ if (slirp->if_fastq.qh_link != &slirp->if_fastq) {
+ ifm_next = (struct mbuf *) slirp->if_fastq.qh_link;
+ next_from_batchq = false;
+ } else if ((struct quehead *) slirp->next_m != &slirp->if_batchq) {
+ /* Nothing on fastq, pick up from batchq via next_m */
+ ifm_next = slirp->next_m;
+ next_from_batchq = true;
+ } else {
+ ifm_next = NULL;
+ }
- from_batchq = true;
- }
+ while (ifm_next) {
+ ifm = ifm_next;
+ from_batchq = next_from_batchq;
- slirp->if_queued--;
+ ifm_next = ifm->ifq_next;
+ if ((struct quehead *) ifm_next == &slirp->if_fastq) {
+ /* No more packets in fastq, switch to batchq */
+ ifm_next = slirp->next_m;
+ next_from_batchq = true;
+ }
+ if ((struct quehead *) ifm_next == &slirp->if_batchq) {
+ /* end of batchq */
+ ifm_next = NULL;
+ }
/* Try to send packet unless it already expired */
if (ifm->expiration_date >= now && !if_encap(slirp, ifm)) {
- /* Packet is delayed due to pending ARP resolution */
- requeued++;
+ /* Packet is delayed due to pending ARP or NDP resolution */
continue;
}
- if (from_batchq) {
+ if (ifm == slirp->next_m) {
/* Set which packet to send on next iteration */
slirp->next_m = ifm->ifq_next;
}
/* If there are more packets for this session, re-queue them */
if (ifm->ifs_next != ifm) {
- insque(ifm->ifs_next, ifqt);
+ struct mbuf *next = ifm->ifs_next;
+
+ insque(next, ifqt);
ifs_remque(ifm);
+
+ if (!from_batchq) {
+ /* Next packet in fastq is from the same session */
+ ifm_next = next;
+ next_from_batchq = false;
+ } else if ((struct quehead *) slirp->next_m == &slirp->if_batchq) {
+ /* Set next_m and ifm_next if the session packet is now the
+ * only one on batchq */
+ slirp->next_m = ifm_next = next;
+ }
}
/* Update so_queued */
}
m_free(ifm);
-
}
- slirp->if_queued = requeued;
+ slirp->if_start_busy = false;
}
projects / qemu.git / blobdiff