xsk: multi-buffer support #21674

Job	Run time
set-matrix	1s
build for x86_64 with gcc	4m 29s
build for x86_64 with llvm-16	4m 12s
build for aarch64 with gcc	4m 26s
build for s390x with gcc	17m 35s
veristat	1m 40s
test_progs on x86_64 with gcc	4m 16s
test_progs_parallel on x86_64 with gcc	2m 52s
test_progs_no_alu32 on x86_64 with gcc	3m 31s
test_progs_no_alu32_parallel on x86_64 with gcc	2m 35s
test_maps on x86_64 with gcc	2m 50s
test_verifier on x86_64 with gcc	1m 5s
test_progs on x86_64 with llvm-16	3m 42s
test_progs_parallel on x86_64 with llvm-16	2m 23s
test_progs_no_alu32 on x86_64 with llvm-16	3m 6s
test_progs_no_alu32_parallel on x86_64 with llvm-16	2m 4s
test_maps on x86_64 with llvm-16	2m 18s
test_verifier on x86_64 with llvm-16	1m 16s
test_progs on aarch64 with gcc	4m 59s
test_progs_parallel on aarch64 with gcc	2m 44s
test_progs_no_alu32 on aarch64 with gcc	4m 15s
test_progs_no_alu32_parallel on aarch64 with gcc	2m 42s
test_maps on aarch64 with gcc	3m 1s
test_verifier on aarch64 with gcc	1m 32s
test_progs on s390x with gcc	25m 45s
test_progs_no_alu32 on s390x with gcc	1s
test_maps on s390x with gcc	51m 20s
test_verifier on s390x with gcc	6m 27s
	2h 47m 7s

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