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netmap: bridge: switch to libnetmap

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Use the newer libnetmap (included in base) rather than the older
nm_open()/nm_close() defined in netmap_user.h
This commit is contained in:
Vincenzo Maffione 2020-11-22 09:10:12 +00:00
parent e0cb5b2a77
commit ecfd9756ce
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=367931
2 changed files with 22 additions and 19 deletions
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4
tools/tools/netmap/Makefile
View File

@ -11,7 +11,7 @@ MAN=
.include <bsd.prog.mk>
.include <bsd.lib.mk>
LDFLAGS += -lpthread
LDFLAGS += -lpthread -lnetmap
.ifdef WITHOUT_PCAP
CFLAGS += -DNO_PCAP
.else
@ -27,7 +27,7 @@ pkt-gen: pkt-gen.o
$(CC) $(CFLAGS) -o pkt-gen pkt-gen.o $(LDFLAGS)
bridge: bridge.o
$(CC) $(CFLAGS) -o bridge bridge.o
$(CC) $(CFLAGS) -o bridge bridge.o $(LDFLAGS)
nmreplay: nmreplay.o
$(CC) $(CFLAGS) -o nmreplay nmreplay.o $(LDFLAGS)

37
tools/tools/netmap/bridge.c
View File

@ -10,9 +10,12 @@
*/
#include <stdio.h>
#define NETMAP_WITH_LIBS
#include <net/netmap_user.h>
#include <sys/poll.h>
#include <sys/ioctl.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#include <libnetmap.h>
static int verbose = 0;
@ -32,7 +35,7 @@ sigint_h(int sig)
* how many packets on this set of queues ?
*/
static int
pkt_queued(struct nm_desc *d, int tx)
pkt_queued(struct nmport_d *d, int tx)
{
u_int i, tot = 0;
@ -61,8 +64,8 @@ process_rings(struct netmap_ring *rxring, struct netmap_ring *txring,
if (rxring->flags || txring->flags)
D("%s rxflags %x txflags %x",
msg, rxring->flags, txring->flags);
j = rxring->cur; /* RX */
k = txring->cur; /* TX */
j = rxring->head; /* RX */
k = txring->head; /* TX */
m = nm_ring_space(rxring);
if (m < limit)
limit = m;
@ -115,11 +118,11 @@ process_rings(struct netmap_ring *rxring, struct netmap_ring *txring,
/* move packts from src to destination */
static int
move(struct nm_desc *src, struct nm_desc *dst, u_int limit)
move(struct nmport_d *src, struct nmport_d *dst, u_int limit)
{
struct netmap_ring *txring, *rxring;
u_int m = 0, si = src->first_rx_ring, di = dst->first_tx_ring;
const char *msg = (src->req.nr_flags == NR_REG_SW) ?
const char *msg = (src->reg.nr_flags == NR_REG_SW) ?
"host->net" : "net->host";
while (si <= src->last_rx_ring && di <= dst->last_tx_ring) {
@ -175,7 +178,7 @@ main(int argc, char **argv)
struct pollfd pollfd[2];
int ch;
u_int burst = 1024, wait_link = 4;
struct nm_desc *pa = NULL, *pb = NULL;
struct nmport_d *pa = NULL, *pb = NULL;
char *ifa = NULL, *ifb = NULL;
char ifabuf[64] = { 0 };
int loopback = 0;
@ -252,16 +255,16 @@ main(int argc, char **argv)
} else {
/* two different interfaces. Take all rings on if1 */
}
pa = nm_open(ifa, NULL, 0, NULL);
pa = nmport_open(ifa);
if (pa == NULL) {
D("cannot open %s", ifa);
return (1);
}
/* try to reuse the mmap() of the first interface, if possible */
pb = nm_open(ifb, NULL, NM_OPEN_NO_MMAP, pa);
pb = nmport_open(ifb);
if (pb == NULL) {
D("cannot open %s", ifb);
nm_close(pa);
nmport_close(pa);
return (1);
}
zerocopy = zerocopy && (pa->mem == pb->mem);
@ -275,8 +278,8 @@ main(int argc, char **argv)
D("Wait %d secs for link to come up...", wait_link);
sleep(wait_link);
D("Ready to go, %s 0x%x/%d <-> %s 0x%x/%d.",
pa->req.nr_name, pa->first_rx_ring, pa->req.nr_rx_rings,
pb->req.nr_name, pb->first_rx_ring, pb->req.nr_rx_rings);
pa->hdr.nr_name, pa->first_rx_ring, pa->reg.nr_rx_rings,
pb->hdr.nr_name, pb->first_rx_ring, pb->reg.nr_rx_rings);
/* main loop */
signal(SIGINT, sigint_h);
@ -320,12 +323,12 @@ main(int argc, char **argv)
pollfd[0].events,
pollfd[0].revents,
pkt_queued(pa, 0),
NETMAP_RXRING(pa->nifp, pa->cur_rx_ring)->cur,
NETMAP_RXRING(pa->nifp, pa->cur_rx_ring)->head,
pkt_queued(pa, 1),
pollfd[1].events,
pollfd[1].revents,
pkt_queued(pb, 0),
NETMAP_RXRING(pb->nifp, pb->cur_rx_ring)->cur,
NETMAP_RXRING(pb->nifp, pb->cur_rx_ring)->head,
pkt_queued(pb, 1)
);
if (ret < 0)
@ -349,8 +352,8 @@ main(int argc, char **argv)
/* We don't need ioctl(NIOCTXSYNC) on the two file descriptors here,
* kernel will txsync on next poll(). */
}
nm_close(pb);
nm_close(pa);
nmport_close(pb);
nmport_close(pa);
return (0);
}