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Message-ID: References: <20261006192601.1875100-1-kuniyu@google.com> <20261006192601.1875100-6-kuniyu@google.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20261006192601.1875100-6-kuniyu@google.com> On 10/06, Kuniyuki Iwashima wrote: > BPF_CGROUP_RUN_PROG_XXX() macros guard __cgroup_bpf_run_filter_XXX() > with cgroup_bpf_enabled(). > > However, even when no SOCK_OPS prog is attached, callers still > initialise struct bpf_sock_ops_kern (memset(), etc.) or evaluate > BPF_SOCK_OPS_TEST_FLAG(), which loads tp->bpf_sock_ops_cb_flags > from a cold cacheline near the end of struct tcp_sock. > > Similar to bpf_tcp_ops, let's check cgroup_bpf_enabled() before > BPF_SOCK_OPS_TEST_FLAG() and struct bpf_sock_ops_kern setup, and > rename BPF_CGROUP_RUN_PROG_SOCK_OPS{,_SK}() with __ prefix. > > Since all direct callers of tcp_call_bpf() pass 0 and NULL for > nargs and args, they can be folded into the new tcp_call_bpf() > macro. > > All callers of tcp_call_bpf_{2,3}arg() check BPF_SOCK_OPS_TEST_FLAG() > and do not need the return value. These are replaced with the new > tcp_call_bpf_flag() macro. > > Signed-off-by: Kuniyuki Iwashima Acked-by: Stanislav Fomichev