bpf: one cannot compile BPFs that include rte_mbuf_core.h #672
Description
A BPF needs to include the header <rte_mbuf_core.h> to access struct rte_mbuf. But the current version of the header <rte_mbuf_core.h> cannot be included in a BPF. This bug is present in the latest DPDK (i.e. 23.11) and a bug report has been filed.
Here's the error one gets while compiling the BPFs included with Gatekeeper:
~/gatekeeper/bpf$ make
clang -O2 -g -target bpf -I../include -Wall -Wextra -Wno-int-to-void-pointer-cast -o granted.bpf -c granted.c
In file included from granted.c:29:
In file included from /usr/local/include/rte_mbuf_core.h:21:
/usr/local/include/rte_byteorder.h:31:16: error: invalid output constraint '=Q' in asm
: [x1] "=Q" (x)
^
1 error generated.
make: *** [Makefile:17: granted.bpf] Error 1