Update LICENCE.
FreeBSD13 can simply work.
fix some issues.
FreeBSD: Upgrade to FreeBSD-releng-13.0 compiled, to be tested.
Reupgrade DPDK to 18.11.
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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Fix `ff_fdused_range` not work.
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.
update README.md and file to Execution
init