|NET_INJECT(9F)||Kernel Functions for Drivers||NET_INJECT(9F)|
#include <sys/neti.h> int net_inject(const net_data_t net, inject_t style, net_inject_t *packet);
If NI_QUEUE_IN is specified, the packet is scheduled for delivery up into the kernel, imitating its reception by a network interface. In this mode, packet->ni_addr is ignored and packet->ni_physical specifies the interface for which the packet is made to appear as if it arrived on.
If NI_QUEUE_OUT is specified, the packet is scheduled for delivery out of the kernel, as if it were being sent by a raw socket. In this mode, packet->ni_addr and packet->ni_physical are both ignored.
Neither NI_QUEUE_IN or NI_QUEUE_OUT cause the packet to be immediately processed by the kernel. Instead, the packet is added to a list and a timeout is scheduled (if there are none already pending) to deliver the packet. The call to net_inject() returns once the setup has been completed, and not after the packet has been processed. The packet processing is completed on a different thread and in a different context to that of the original packet. Thus, a packet queued up using net_inject() for either NI_QUEUE_IN or NI_QUEUE_OUT is presented to the packet event again. A packet received by a hook from NH_PHYSICAL_IN and then queued up with NI_QUEUE_IN is seen by the hook as another NH_PHYSICAL_IN packet. This also applies to both NH_PHYSICAL_OUT and NI_QUEUE_OUT packets.
If NI_DIRECT_OUT is specified, an attempt is made to send the packet out to a network interface immediately. No processing on the packet, aside from prepending any required layer 2 information, is made. In this instance, packet->ni_addr may be used to specify the next hop (for the purpose of link layer address resolution) and packet->ni_physical determines which interface the packet should be sent out.
For all three packets, packet->ni_packet must point to an mblk structure with the packet to be delivered.
See net_inject_t(9S) for more details on the structure net_inject_t.
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|May 1, 2008||OmniOS|