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netdev: Extend rx_recv to pass multiple packets.

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DPDK can receive multiple packets but current netdev API does
not allow that.  Following patch allows dpif-netdev receive batch
of packet in a rx_recv() call for any netdev port.  This will be
used by dpdk-netdev.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
This commit is contained in:
Pravin
2014-03-20 10:54:37 -07:00
committed by Pravin B Shelar
parent 90b8c2f7c0
commit df1e5a3bc7
13 changed files with 166 additions and 115 deletions
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25
lib/netdev-bsd.c
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@@ -49,6 +49,7 @@
#include "rtbsd.h"
#include "connectivity.h"
#include "coverage.h"
#include "dpif-netdev.h"
#include "dynamic-string.h"
#include "fatal-signal.h"
#include "ofpbuf.h"
@@ -151,6 +152,7 @@ static int af_link_ioctl(unsigned long command, const void *arg);
#endif
static void netdev_bsd_run(void);
static int netdev_bsd_get_mtu(const struct netdev *netdev_, int *mtup);
static bool
is_netdev_bsd_class(const struct netdev_class *netdev_class)
@@ -620,13 +622,32 @@ netdev_rx_bsd_recv_tap(struct netdev_rx_bsd *rx, struct ofpbuf *buffer)
}
static int
netdev_bsd_rx_recv(struct netdev_rx *rx_, struct ofpbuf *buffer)
netdev_bsd_rx_recv(struct netdev_rx *rx_, struct ofpbuf **packet, int *c)
{
struct netdev_rx_bsd *rx = netdev_rx_bsd_cast(rx_);
struct netdev *netdev = rx->up.netdev;
struct ofpbuf *buffer;
ssize_t retval;
int mtu;
return (rx->pcap_handle
if (netdev_bsd_get_mtu(netdev_bsd_cast(netdev), &mtu)) {
mtu = ETH_PAYLOAD_MAX;
}
buffer = ofpbuf_new_with_headroom(VLAN_ETH_HEADER_LEN + mtu, DP_NETDEV_HEADROOM);
retval = (rx->pcap_handle
? netdev_rx_bsd_recv_pcap(rx, buffer)
: netdev_rx_bsd_recv_tap(rx, buffer));
if (retval) {
ofpbuf_delete(buffer);
} else {
dp_packet_pad(buffer);
packet[0] = buffer;
*c = 1;
}
return retval;
}
/*