Support zero copy while call `ff_write`, you can enable it by modify ‘FF_ZC_SEND=1' in `lib/Makefile`.

`FF_ZC_SEND` is same as `FF_USE_PAGE_ARRAY`, it will improve performance slightly in some scena

Support zero copy while call `ff_write`, you can enable it by modify ‘FF_ZC_SEND=1' in `lib/Makefile`.

`FF_ZC_SEND` is same as `FF_USE_PAGE_ARRAY`, it will improve performance slightly in some scenarios, need to be tested in combination with real applications.

You can enable both compilation options at the same time or separately.

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set freebsd mbuf vlan information when the vlan_strip is enable && get ether_type error when the vlan_strip is disabled

set freebsd mbuf vlan information when the vlan_strip is enable && get ether_type error when the vlan_strip is disabled

not use mcopy when transmit from bsd to dpdk

not use mcopy when transmit from bsd to dpdk

Misc: some updates.

1.add interface `ff_dup` and `ff_dup2`.
2.add interface `ff_ioctl_freebsd`/`ff_getsockopt_freebsd`/`ff_setsockopt_freebsd` for tools.
3.initial parameter `proc-type` can be NULL,

Misc: some updates.

1.add interface `ff_dup` and `ff_dup2`.
2.add interface `ff_ioctl_freebsd`/`ff_getsockopt_freebsd`/`ff_setsockopt_freebsd` for tools.
3.initial parameter `proc-type` can be NULL, default "auto".

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Misc: some updates.

1.add interface `ff_dup` and `ff_dup2`.
2.add interface `ff_ioctl_freebsd`/`ff_getsockopt_freebsd`/`ff_setsockopt_freebsd` for tools.
3.initial parameter `proc-type` can be NULL,

Misc: some updates.

1.add interface `ff_dup` and `ff_dup2`.
2.add interface `ff_ioctl_freebsd`/`ff_getsockopt_freebsd`/`ff_setsockopt_freebsd` for tools.
3.initial parameter `proc-type` can be NULL, default "auto".

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Nginx: support kernel network stack, so we can do what fstack can't do,
e.g. unix socket, ipc (with APP on kernel network stack), packet from kernel network stack.
1. Add a new directive kernel_netw

Nginx: support kernel network stack, so we can do what fstack can't do,
e.g. unix socket, ipc (with APP on kernel network stack), packet from kernel network stack.
1. Add a new directive kernel_network_stack :
Syntax: kernel_network_stack on | off;
Default: kernel_network_stack off;
Context: http, server
This directive is available only when NGX_HAVE_FF_STACK is defined.
Determines whether server should run on kernel network stack or fstack.
2. Use a simpler and more effective solution to discriminate fstack fd(file descriptor, only socket for now) from kernel fd.

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Nginx: support kernel network stack, so we can do what fstack can't do,
e.g. unix socket, ipc (with APP on kernel network stack), packet from kernel network stack.
1. Add a new directive kernel_netw

Nginx: support kernel network stack, so we can do what fstack can't do,
e.g. unix socket, ipc (with APP on kernel network stack), packet from kernel network stack.
1. Add a new directive kernel_network_stack :
Syntax: kernel_network_stack on | off;
Default: kernel_network_stack off;
Context: http, server
This directive is available only when NGX_HAVE_FF_STACK is defined.
Determines whether server should run on kernel network stack or fstack.
2. Use a simpler and more effective solution to discriminate fstack fd(file descriptor, only socket for now) from kernel fd.

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Add tool: ngctl.

ngctl -- netgraph control utility.
The ngctl utility creates a new netgraph node of type socket which can be used to issue netgraph commands.

Fix ff_rss_check function bug.

1.Close #22.
2.Configure the HW indirection table when initializing port.
3.Use several LSBs of the rss hash result according to reta_size when
calculating queue index.

Simplify startup arguments and add ff_fdisused.

Changes:
1.Simplify f-stack startup arguments:"--conf, --proc-type, --proc-id".
2.add a function `ff_fdisused` to check if fd is used in f-stack.

Add API: ff_gettimeofday.

Since f-stack run with polling mode, nginx will call gettimeofday every loop, and cost a lot.
With this commit, f-stack will update current timespec periodically in
ff_hard

Add API: ff_gettimeofday.

Since f-stack run with polling mode, nginx will call gettimeofday every loop, and cost a lot.
With this commit, f-stack will update current timespec periodically in
ff_hardclock_job. And ff_gettimeofday will get this value.
In nginx, hijack gettimeofday to call ff_gettimeofday.

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Add tool: route.

This commit ports FreeBSD `route` to F-Stack, can be used to set the route
table.

epoll optimization, add ff_kevent_do_each

Support RX/TX offload according to HW's capability

RX: VLAN strip, CRC strip, IP/TCP/UDP checksum.
TX: IP/TCP/UDP checksum, TSO.

Note that TSO has a problem: when enable TSO,
F-Stack is much slower

Support RX/TX offload according to HW's capability

RX: VLAN strip, CRC strip, IP/TCP/UDP checksum.
TX: IP/TCP/UDP checksum, TSO.

Note that TSO has a problem: when enable TSO,
F-Stack is much slower(Temporarily not resolved).
So TSO is disabled by default.
Edit config.ini to enable it.

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init