cleanup: remove ctx

Signed-off-by: Andrea Terzolo <andreaterzolo3@gmail.com>

driver/modern_bpf/helpers/store/auxmap_store_params.h

@@ -117,10 +117,8 @@ static __always_inline void auxmap__finalize_event_header(struct auxiliary_map *
  * of events sent to userspace, otherwise we increment the dropped events.
  *
  * @param auxmap pointer to the auxmap in which we have already written the entire event.
- * @param ctx BPF prog context
  */
-// todo!: we need to remove the context because we don't perform any tail call
-static __always_inline void auxmap__submit_event(struct auxiliary_map *auxmap, void *ctx) {
+static __always_inline void auxmap__submit_event(struct auxiliary_map *auxmap) {
 	struct ringbuf_map *rb = maps__get_ringbuf_map();
 	if(!rb) {
 		// this should never happen because we check it in sys_enter/sys_exit

driver/modern_bpf/helpers/store/ringbuf_store_params.h

@@ -90,13 +90,10 @@ struct ringbuf_struct {
  * to know the event dimension at compile time.
  *
  * @param ringbuf pointer to the `ringbuf_struct`
- * @param ctx BPF prog context
  * @param event_size exact size of the fixed-size event
  * @return `1` in case of success, `0` in case of failure.
  */
-// todo!: we need to remove the context because we don't perform any tail call
 static __always_inline uint32_t ringbuf__reserve_space(struct ringbuf_struct *ringbuf,
-                                                       void *ctx,
                                                        uint32_t event_size,
                                                        uint16_t event_type) {
 	struct ringbuf_map *rb = maps__get_ringbuf_map();

driver/modern_bpf/programs/attached/events/page_fault_kernel.bpf.c

@@ -22,7 +22,7 @@ int BPF_PROG(pf_kernel, unsigned long address, struct pt_regs *regs, unsigned lo
 	}
 
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, PAGE_FAULT_SIZE, PPME_PAGE_FAULT_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, PAGE_FAULT_SIZE, PPME_PAGE_FAULT_E)) {
 		return 0;
 	}
 

driver/modern_bpf/programs/attached/events/page_fault_user.bpf.c

@@ -22,7 +22,7 @@ int BPF_PROG(pf_user, unsigned long address, struct pt_regs *regs, unsigned long
 	}
 
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, PAGE_FAULT_SIZE, PPME_PAGE_FAULT_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, PAGE_FAULT_SIZE, PPME_PAGE_FAULT_E)) {
 		return 0;
 	}
 

driver/modern_bpf/programs/attached/events/sched_process_exec.bpf.c

@@ -292,7 +292,7 @@ int BPF_PROG(t2_sched_p_exec, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 	return 0;
 }
 

driver/modern_bpf/programs/attached/events/sched_process_exit.bpf.c

@@ -201,7 +201,7 @@ int BPF_PROG(sched_proc_exit, struct task_struct *task) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }

driver/modern_bpf/programs/attached/events/sched_process_fork.bpf.c

@@ -255,7 +255,7 @@ int BPF_PROG(t2_sched_p_fork, struct task_struct *parent, struct task_struct *ch
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 	return 0;
 }
 #endif /* CAPTURE_SCHED_PROC_EXEC */

driver/modern_bpf/programs/attached/events/sched_switch.bpf.c

@@ -23,7 +23,7 @@ int BPF_PROG(sched_switch, bool preempt, struct task_struct *prev, struct task_s
 	/// TODO: we could avoid switches from kernel threads to kernel threads (?).
 
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, SCHED_SWITCH_SIZE, PPME_SCHEDSWITCH_6_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, SCHED_SWITCH_SIZE, PPME_SCHEDSWITCH_6_E)) {
 		return 0;
 	}
 

driver/modern_bpf/programs/attached/events/signal_deliver.bpf.c

@@ -20,7 +20,7 @@ int BPF_PROG(signal_deliver, int sig, struct kernel_siginfo *info, struct k_siga
 	}
 
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, SIGNAL_DELIVER_SIZE, PPME_SIGNALDELIVER_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, SIGNAL_DELIVER_SIZE, PPME_SIGNALDELIVER_E)) {
 		return 0;
 	}
 

driver/modern_bpf/programs/tail_called/events/custom_logic/drop.bpf.c

@@ -13,7 +13,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(t1_drop_e) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, DROP_E_SIZE, PPME_DROP_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, DROP_E_SIZE, PPME_DROP_E)) {
 		return 0;
 	}
 
@@ -36,7 +36,7 @@ int BPF_PROG(t1_drop_e) {
 SEC("tp_btf/sys_exit")
 int BPF_PROG(t1_drop_x) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, DROP_X_SIZE, PPME_DROP_X)) {
+	if(!ringbuf__reserve_space(&ringbuf, DROP_X_SIZE, PPME_DROP_X)) {
 		return 0;
 	}
 

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/accept.bpf.c

@@ -14,7 +14,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(accept_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, ACCEPT_E_SIZE, PPME_SOCKET_ACCEPT_5_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, ACCEPT_E_SIZE, PPME_SOCKET_ACCEPT_5_E)) {
 		return 0;
 	}
 
@@ -105,7 +105,7 @@ int BPF_PROG(accept_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/accept4.bpf.c

@@ -14,7 +14,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(accept4_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, ACCEPT4_E_SIZE, PPME_SOCKET_ACCEPT4_6_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, ACCEPT4_E_SIZE, PPME_SOCKET_ACCEPT4_6_E)) {
 		return 0;
 	}
 
@@ -109,7 +109,7 @@ int BPF_PROG(accept4_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/access.bpf.c

@@ -14,7 +14,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(access_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, ACCESS_E_SIZE, PPME_SYSCALL_ACCESS_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, ACCESS_E_SIZE, PPME_SYSCALL_ACCESS_E)) {
 		return 0;
 	}
 
@@ -59,7 +59,7 @@ int BPF_PROG(access_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/bind.bpf.c

@@ -18,7 +18,7 @@ int BPF_PROG(bind_e, struct pt_regs *regs, long id) {
 	extract__network_args(&socket_fd, 1, regs);
 
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, BIND_E_SIZE, PPME_SOCKET_BIND_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, BIND_E_SIZE, PPME_SOCKET_BIND_E)) {
 		return 0;
 	}
 
@@ -70,7 +70,7 @@ int BPF_PROG(bind_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/bpf.bpf.c

@@ -13,7 +13,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(bpf_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, BPF_E_SIZE, PPME_SYSCALL_BPF_2_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, BPF_E_SIZE, PPME_SYSCALL_BPF_2_E)) {
 		return 0;
 	}
 
@@ -39,7 +39,7 @@ int BPF_PROG(bpf_e, struct pt_regs *regs, long id) {
 SEC("tp_btf/sys_exit")
 int BPF_PROG(bpf_x, struct pt_regs *regs, long ret) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, BPF_X_SIZE, PPME_SYSCALL_BPF_2_X)) {
+	if(!ringbuf__reserve_space(&ringbuf, BPF_X_SIZE, PPME_SYSCALL_BPF_2_X)) {
 		return 0;
 	}
 

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/brk.bpf.c

@@ -13,7 +13,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(brk_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, BRK_E_SIZE, PPME_SYSCALL_BRK_4_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, BRK_E_SIZE, PPME_SYSCALL_BRK_4_E)) {
 		return 0;
 	}
 
@@ -39,7 +39,7 @@ int BPF_PROG(brk_e, struct pt_regs *regs, long id) {
 SEC("tp_btf/sys_exit")
 int BPF_PROG(brk_x, struct pt_regs *regs, long ret) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, BRK_X_SIZE, PPME_SYSCALL_BRK_4_X)) {
+	if(!ringbuf__reserve_space(&ringbuf, BRK_X_SIZE, PPME_SYSCALL_BRK_4_X)) {
 		return 0;
 	}
 

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/capset.bpf.c

@@ -13,7 +13,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(capset_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, CAPSET_E_SIZE, PPME_SYSCALL_CAPSET_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, CAPSET_E_SIZE, PPME_SYSCALL_CAPSET_E)) {
 		return 0;
 	}
 
@@ -37,7 +37,7 @@ int BPF_PROG(capset_e, struct pt_regs *regs, long id) {
 SEC("tp_btf/sys_exit")
 int BPF_PROG(capset_x, struct pt_regs *regs, long ret) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, CAPSET_X_SIZE, PPME_SYSCALL_CAPSET_X)) {
+	if(!ringbuf__reserve_space(&ringbuf, CAPSET_X_SIZE, PPME_SYSCALL_CAPSET_X)) {
 		return 0;
 	}
 

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/chdir.bpf.c

@@ -14,7 +14,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(chdir_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, CHDIR_E_SIZE, PPME_SYSCALL_CHDIR_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, CHDIR_E_SIZE, PPME_SYSCALL_CHDIR_E)) {
 		return 0;
 	}
 
@@ -57,7 +57,7 @@ int BPF_PROG(chdir_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/chmod.bpf.c

@@ -14,7 +14,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(chmod_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, CHMOD_E_SIZE, PPME_SYSCALL_CHMOD_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, CHMOD_E_SIZE, PPME_SYSCALL_CHMOD_E)) {
 		return 0;
 	}
 
@@ -61,7 +61,7 @@ int BPF_PROG(chmod_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/chown.bpf.c

@@ -14,7 +14,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(chown_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, CHOWN_E_SIZE, PPME_SYSCALL_CHOWN_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, CHOWN_E_SIZE, PPME_SYSCALL_CHOWN_E)) {
 		return 0;
 	}
 
@@ -65,7 +65,7 @@ int BPF_PROG(chown_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/chroot.bpf.c

@@ -14,7 +14,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(chroot_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, CHROOT_E_SIZE, PPME_SYSCALL_CHROOT_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, CHROOT_E_SIZE, PPME_SYSCALL_CHROOT_E)) {
 		return 0;
 	}
 
@@ -57,7 +57,7 @@ int BPF_PROG(chroot_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/clone.bpf.c

@@ -14,7 +14,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(clone_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, CLONE_E_SIZE, PPME_SYSCALL_CLONE_20_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, CLONE_E_SIZE, PPME_SYSCALL_CLONE_20_E)) {
 		return 0;
 	}
 
@@ -228,7 +228,7 @@ int BPF_PROG(t2_clone_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 	return 0;
 }
 

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/clone3.bpf.c

@@ -14,7 +14,7 @@
 SEC("tp_btf/sys_enter")
 int BPF_PROG(clone3_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, CLONE3_E_SIZE, PPME_SYSCALL_CLONE3_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, CLONE3_E_SIZE, PPME_SYSCALL_CLONE3_E)) {
 		return 0;
 	}
 
@@ -226,7 +226,7 @@ int BPF_PROG(t2_clone3_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 	return 0;
 }
 

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/close.bpf.c

@@ -42,7 +42,7 @@ int BPF_PROG(close_e, struct pt_regs *regs, long id) {
 	}
 
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, CLOSE_E_SIZE, PPME_SYSCALL_CLOSE_E)) {
+	if(!ringbuf__reserve_space(&ringbuf, CLOSE_E_SIZE, PPME_SYSCALL_CLOSE_E)) {
 		return 0;
 	}
 
@@ -72,7 +72,7 @@ int BPF_PROG(close_x, struct pt_regs *regs, long ret) {
 	}
 
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf, ctx, CLOSE_X_SIZE, PPME_SYSCALL_CLOSE_X)) {
+	if(!ringbuf__reserve_space(&ringbuf, CLOSE_X_SIZE, PPME_SYSCALL_CLOSE_X)) {
 		return 0;
 	}
 

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/connect.bpf.c

@@ -37,7 +37,7 @@ int BPF_PROG(connect_e, struct pt_regs *regs, long id) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }
@@ -81,7 +81,7 @@ int BPF_PROG(connect_x, struct pt_regs *regs, long ret) {
 
 	auxmap__finalize_event_header(auxmap);
 
-	auxmap__submit_event(auxmap, ctx);
+	auxmap__submit_event(auxmap);
 
 	return 0;
 }

driver/modern_bpf/programs/tail_called/events/syscall_dispatched_events/copy_file_range.bpf.c

@@ -14,7 +14,7 @@ SEC("tp_btf/sys_enter")
 int BPF_PROG(copy_file_range_e, struct pt_regs *regs, long id) {
 	struct ringbuf_struct ringbuf;
 	if(!ringbuf__reserve_space(&ringbuf,
-	                           ctx,
+
 	                           COPY_FILE_RANGE_E_SIZE,
 	                           PPME_SYSCALL_COPY_FILE_RANGE_E)) {
 		return 0;
@@ -50,10 +50,7 @@ int BPF_PROG(copy_file_range_e, struct pt_regs *regs, long id) {
 SEC("tp_btf/sys_exit")
 int BPF_PROG(copy_file_range_x, struct pt_regs *regs, long ret) {
 	struct ringbuf_struct ringbuf;
-	if(!ringbuf__reserve_space(&ringbuf,
-	                           ctx,
-	                           COPY_FILE_RANGE_X_SIZE,
-	                           PPME_SYSCALL_COPY_FILE_RANGE_X)) {
+	if(!ringbuf__reserve_space(&ringbuf, COPY_FILE_RANGE_X_SIZE, PPME_SYSCALL_COPY_FILE_RANGE_X)) {
 		return 0;
 	}