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Commit 6aaae2b6 authored by Daniel Borkmann's avatar Daniel Borkmann Committed by David S. Miller
Browse files

bpf: rename bpf_compute_data_end into bpf_compute_data_pointers 



Just do the rename into bpf_compute_data_pointers() as we'll add
one more pointer here to recompute.

Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3bd3b9ed

include/linux/filter.h

+6 −3
Original line number Diff line number Diff line
@@ -496,10 +496,13 @@ struct xdp_buff { 
	void *data_hard_start;

};



/* compute the linear packet data range [data, data_end) which

 * will be accessed by cls_bpf, act_bpf and lwt programs

/* Compute the linear packet data range [data, data_end) which

 * will be accessed by various program types (cls_bpf, act_bpf,

 * lwt, ...). Subsystems allowing direct data access must (!)

 * ensure that cb[] area can be written to when BPF program is

 * invoked (otherwise cb[] save/restore is necessary).

 */

static inline void bpf_compute_data_end(struct sk_buff *skb)

static inline void bpf_compute_data_pointers(struct sk_buff *skb)

{

	struct bpf_skb_data_end *cb = (struct bpf_skb_data_end *)skb->cb;

kernel/bpf/sockmap.c

+2 −2
Original line number Diff line number Diff line
@@ -102,7 +102,7 @@ static int smap_verdict_func(struct smap_psock *psock, struct sk_buff *skb) 


	skb_orphan(skb);

	skb->sk = psock->sock;

	bpf_compute_data_end(skb);

	bpf_compute_data_pointers(skb);

	rc = (*prog->bpf_func)(skb, prog->insnsi);

	skb->sk = NULL;
@@ -369,7 +369,7 @@ static int smap_parse_func_strparser(struct strparser *strp, 
	 * any socket yet.

	 */

	skb->sk = psock->sock;

	bpf_compute_data_end(skb);

	bpf_compute_data_pointers(skb);

	rc = (*prog->bpf_func)(skb, prog->insnsi);

	skb->sk = NULL;

	rcu_read_unlock();

net/bpf/test_run.c

+1 −1
Original line number Diff line number Diff line
@@ -133,7 +133,7 @@ int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr, 
	if (is_l2)

		__skb_push(skb, ETH_HLEN);

	if (is_direct_pkt_access)

		bpf_compute_data_end(skb);

		bpf_compute_data_pointers(skb);

	retval = bpf_test_run(prog, skb, repeat, &duration);

	if (!is_l2)

		__skb_push(skb, ETH_HLEN);

net/core/filter.c

+7 −7
Original line number Diff line number Diff line
@@ -1402,7 +1402,7 @@ static inline int bpf_try_make_writable(struct sk_buff *skb, 
{

	int err = __bpf_try_make_writable(skb, write_len);



	bpf_compute_data_end(skb);

	bpf_compute_data_pointers(skb);

	return err;

}
@@ -1962,7 +1962,7 @@ BPF_CALL_3(bpf_skb_vlan_push, struct sk_buff *, skb, __be16, vlan_proto, 
	ret = skb_vlan_push(skb, vlan_proto, vlan_tci);

	bpf_pull_mac_rcsum(skb);



	bpf_compute_data_end(skb);

	bpf_compute_data_pointers(skb);

	return ret;

}
@@ -1984,7 +1984,7 @@ BPF_CALL_1(bpf_skb_vlan_pop, struct sk_buff *, skb) 
	ret = skb_vlan_pop(skb);

	bpf_pull_mac_rcsum(skb);



	bpf_compute_data_end(skb);

	bpf_compute_data_pointers(skb);

	return ret;

}
@@ -2178,7 +2178,7 @@ BPF_CALL_3(bpf_skb_change_proto, struct sk_buff *, skb, __be16, proto, 
	 * need to be verified first.

	 */

	ret = bpf_skb_proto_xlat(skb, proto);

	bpf_compute_data_end(skb);

	bpf_compute_data_pointers(skb);

	return ret;

}
@@ -2303,7 +2303,7 @@ static int bpf_skb_adjust_net(struct sk_buff *skb, s32 len_diff) 
	ret = shrink ? bpf_skb_net_shrink(skb, len_diff_abs) :

		       bpf_skb_net_grow(skb, len_diff_abs);



	bpf_compute_data_end(skb);

	bpf_compute_data_pointers(skb);

	return ret;

}
@@ -2394,7 +2394,7 @@ BPF_CALL_3(bpf_skb_change_tail, struct sk_buff *, skb, u32, new_len, 
			skb_gso_reset(skb);

	}



	bpf_compute_data_end(skb);

	bpf_compute_data_pointers(skb);

	return ret;

}
@@ -2434,7 +2434,7 @@ BPF_CALL_3(bpf_skb_change_head, struct sk_buff *, skb, u32, head_room, 
		skb_reset_mac_header(skb);

	}



	bpf_compute_data_end(skb);

	bpf_compute_data_pointers(skb);

	return 0;

}

net/core/lwt_bpf.c

+1 −1
Original line number Diff line number Diff line
@@ -51,7 +51,7 @@ static int run_lwt_bpf(struct sk_buff *skb, struct bpf_lwt_prog *lwt, 
	 */

	preempt_disable();

	rcu_read_lock();

	bpf_compute_data_end(skb);

	bpf_compute_data_pointers(skb);

	ret = bpf_prog_run_save_cb(lwt->prog, skb);

	rcu_read_unlock();