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Commit 249ff1c6 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

[LLC]: Use some more likely/unlikely 



Signed-off-by: default avatarJochen Friedrich <jochen@scram.de>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@mandriva.com>
parent 590232a7

net/llc/af_llc.c

+4 −6
Original line number Diff line number Diff line
@@ -116,12 +116,12 @@ static int llc_ui_send_data(struct sock* sk, struct sk_buff *skb, int noblock) 
	struct llc_sock* llc = llc_sk(sk);

	int rc = 0;



	if (llc_data_accept_state(llc->state) || llc->p_flag) {

	if (unlikely(llc_data_accept_state(llc->state) || llc->p_flag)) {

		long timeout = sock_sndtimeo(sk, noblock);



		rc = llc_ui_wait_for_busy_core(sk, timeout);

	}

	if (!rc)

	if (unlikely(!rc))

		rc = llc_build_and_send_pkt(sk, skb);

	return rc;

}
@@ -762,15 +762,13 @@ static int llc_ui_sendmsg(struct kiocb *iocb, struct socket *sock, 
	if (!(sk->sk_type == SOCK_STREAM && !addr->sllc_ua))

		goto out;

	rc = llc_ui_send_data(sk, skb, noblock);

	if (rc)

		dprintk("%s: llc_ui_send_data failed: %d\n", __FUNCTION__, rc);

out:

	if (rc)

	if (rc) {

		kfree_skb(skb);

release:

	if (rc)

		dprintk("%s: failed sending from %02X to %02X: %d\n",

			__FUNCTION__, llc->laddr.lsap, llc->daddr.lsap, rc);

	}

	release_sock(sk);

	return rc ? : copied;

}

net/llc/llc_c_ac.c

+26 −26
Original line number Diff line number Diff line
@@ -221,7 +221,7 @@ int llc_conn_ac_send_disc_cmd_p_set_x(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_CMD);

		llc_pdu_init_as_disc_cmd(nskb, 1);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

		llc_conn_ac_set_p_flag_1(sk, skb);
@@ -248,7 +248,7 @@ int llc_conn_ac_send_dm_rsp_f_set_p(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_dm_rsp(nskb, f_bit);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -272,7 +272,7 @@ int llc_conn_ac_send_dm_rsp_f_set_1(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_dm_rsp(nskb, 1);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -305,7 +305,7 @@ int llc_conn_ac_send_frmr_rsp_f_set_x(struct sock *sk, struct sk_buff *skb) 
		llc_pdu_init_as_frmr_rsp(nskb, pdu, f_bit, llc->vS,

					 llc->vR, INCORRECT);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -331,7 +331,7 @@ int llc_conn_ac_resend_frmr_rsp_f_set_0(struct sock *sk, struct sk_buff *skb) 
		llc_pdu_init_as_frmr_rsp(nskb, pdu, 0, llc->vS,

					 llc->vR, INCORRECT);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -360,7 +360,7 @@ int llc_conn_ac_resend_frmr_rsp_f_set_p(struct sock *sk, struct sk_buff *skb) 
		llc_pdu_init_as_frmr_rsp(nskb, pdu, f_bit, llc->vS,

					 llc->vR, INCORRECT);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -381,7 +381,7 @@ int llc_conn_ac_send_i_cmd_p_set_1(struct sock *sk, struct sk_buff *skb) 
			    llc->daddr.lsap, LLC_PDU_CMD);

	llc_pdu_init_as_i_cmd(skb, 1, llc->vS, llc->vR);

	rc = llc_mac_hdr_init(skb, llc->dev->dev_addr, llc->daddr.mac);

	if (!rc) {

	if (likely(!rc)) {

		llc_conn_send_pdu(sk, skb);

		llc_conn_ac_inc_vs_by_1(sk, skb);

	}
@@ -398,7 +398,7 @@ static int llc_conn_ac_send_i_cmd_p_set_0(struct sock *sk, struct sk_buff *skb) 
			    llc->daddr.lsap, LLC_PDU_CMD);

	llc_pdu_init_as_i_cmd(skb, 0, llc->vS, llc->vR);

	rc = llc_mac_hdr_init(skb, llc->dev->dev_addr, llc->daddr.mac);

	if (!rc) {

	if (likely(!rc)) {

		llc_conn_send_pdu(sk, skb);

		llc_conn_ac_inc_vs_by_1(sk, skb);

	}
@@ -415,7 +415,7 @@ int llc_conn_ac_send_i_xxx_x_set_0(struct sock *sk, struct sk_buff *skb) 
			    llc->daddr.lsap, LLC_PDU_CMD);

	llc_pdu_init_as_i_cmd(skb, 0, llc->vS, llc->vR);

	rc = llc_mac_hdr_init(skb, llc->dev->dev_addr, llc->daddr.mac);

	if (!rc) {

	if (likely(!rc)) {

		llc_conn_send_pdu(sk, skb);

		llc_conn_ac_inc_vs_by_1(sk, skb);

	}
@@ -447,7 +447,7 @@ int llc_conn_ac_resend_i_xxx_x_set_0_or_send_rr(struct sock *sk, 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rr_rsp(nskb, 0, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (!rc)

		if (likely(!rc))

			llc_conn_send_pdu(sk, nskb);

		else

			kfree_skb(skb);
@@ -482,7 +482,7 @@ int llc_conn_ac_send_rej_cmd_p_set_1(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_CMD);

		llc_pdu_init_as_rej_cmd(nskb, 1, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -506,7 +506,7 @@ int llc_conn_ac_send_rej_rsp_f_set_1(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rej_rsp(nskb, 1, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -530,7 +530,7 @@ int llc_conn_ac_send_rej_xxx_x_set_0(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rej_rsp(nskb, 0, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -554,7 +554,7 @@ int llc_conn_ac_send_rnr_cmd_p_set_1(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_CMD);

		llc_pdu_init_as_rnr_cmd(nskb, 1, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -578,7 +578,7 @@ int llc_conn_ac_send_rnr_rsp_f_set_1(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rnr_rsp(nskb, 1, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -602,7 +602,7 @@ int llc_conn_ac_send_rnr_xxx_x_set_0(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rnr_rsp(nskb, 0, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -638,7 +638,7 @@ int llc_conn_ac_opt_send_rnr_xxx_x_set_0(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rnr_rsp(nskb, 0, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -662,7 +662,7 @@ int llc_conn_ac_send_rr_cmd_p_set_1(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_CMD);

		llc_pdu_init_as_rr_cmd(nskb, 1, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -687,7 +687,7 @@ int llc_conn_ac_send_rr_rsp_f_set_1(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rr_rsp(nskb, f_bit, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -711,7 +711,7 @@ int llc_conn_ac_send_ack_rsp_f_set_1(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rr_rsp(nskb, 1, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -735,7 +735,7 @@ int llc_conn_ac_send_rr_xxx_x_set_0(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rr_rsp(nskb, 0, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -759,7 +759,7 @@ int llc_conn_ac_send_ack_xxx_x_set_0(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rr_rsp(nskb, 0, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -796,7 +796,7 @@ int llc_conn_ac_send_sabme_cmd_p_set_x(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_CMD);

		llc_pdu_init_as_sabme_cmd(nskb, 1);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, dmac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

		llc_conn_set_p_flag(sk, 1);
@@ -824,7 +824,7 @@ int llc_conn_ac_send_ua_rsp_f_set_p(struct sock *sk, struct sk_buff *skb) 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_ua_rsp(nskb, f_bit);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}
@@ -924,7 +924,7 @@ static int llc_conn_ac_send_i_rsp_f_set_ackpf(struct sock *sk, 
			    llc->daddr.lsap, LLC_PDU_RSP);

	llc_pdu_init_as_i_cmd(skb, llc->ack_pf, llc->vS, llc->vR);

	rc = llc_mac_hdr_init(skb, llc->dev->dev_addr, llc->daddr.mac);

	if (!rc) {

	if (likely(!rc)) {

		llc_conn_send_pdu(sk, skb);

		llc_conn_ac_inc_vs_by_1(sk, skb);

	}
@@ -978,7 +978,7 @@ static int llc_conn_ac_send_rr_rsp_f_set_ackpf(struct sock *sk, 
				    llc->daddr.lsap, LLC_PDU_RSP);

		llc_pdu_init_as_rr_rsp(nskb, llc->ack_pf, llc->vR);

		rc = llc_mac_hdr_init(nskb, llc->dev->dev_addr, llc->daddr.mac);

		if (rc)

		if (unlikely(rc))

			goto free;

		llc_conn_send_pdu(sk, nskb);

	}

net/llc/llc_if.c

+3 −6
Original line number Diff line number Diff line
@@ -47,14 +47,11 @@ int llc_build_and_send_pkt(struct sock *sk, struct sk_buff *skb) 
	int rc = -ECONNABORTED;

	struct llc_sock *llc = llc_sk(sk);



	if (llc->state == LLC_CONN_STATE_ADM)

	if (unlikely(llc->state == LLC_CONN_STATE_ADM))

		goto out;

	rc = -EBUSY;

	if (llc_data_accept_state(llc->state)) { /* data_conn_refuse */

		llc->failed_data_req = 1;

		goto out;

	}

	if (llc->p_flag) {

	if (unlikely(llc_data_accept_state(llc->state) || /* data_conn_refuse */

		     llc->p_flag)) {

		llc->failed_data_req = 1;

		goto out;

	}

net/llc/llc_output.c

+1 −1
Original line number Diff line number Diff line
@@ -98,7 +98,7 @@ int llc_build_and_send_ui_pkt(struct llc_sap *sap, struct sk_buff *skb, 
			    dsap, LLC_PDU_CMD);

	llc_pdu_init_as_ui_cmd(skb);

	rc = llc_mac_hdr_init(skb, skb->dev->dev_addr, dmac);

	if (!rc)

	if (likely(!rc))

		rc = dev_queue_xmit(skb);

	return rc;

}

net/llc/llc_s_ac.c

+5 −5
Original line number Diff line number Diff line
@@ -58,7 +58,7 @@ int llc_sap_action_send_ui(struct llc_sap *sap, struct sk_buff *skb) 
			    ev->daddr.lsap, LLC_PDU_CMD);

	llc_pdu_init_as_ui_cmd(skb);

	rc = llc_mac_hdr_init(skb, ev->saddr.mac, ev->daddr.mac);

	if (!rc)

	if (likely(!rc))

		rc = dev_queue_xmit(skb);

	return rc;

}
@@ -81,7 +81,7 @@ int llc_sap_action_send_xid_c(struct llc_sap *sap, struct sk_buff *skb) 
			    ev->daddr.lsap, LLC_PDU_CMD);

	llc_pdu_init_as_xid_cmd(skb, LLC_XID_NULL_CLASS_2, 0);

	rc = llc_mac_hdr_init(skb, ev->saddr.mac, ev->daddr.mac);

	if (!rc)

	if (likely(!rc))

		rc = dev_queue_xmit(skb);

	return rc;

}
@@ -110,7 +110,7 @@ int llc_sap_action_send_xid_r(struct llc_sap *sap, struct sk_buff *skb) 
			    LLC_PDU_RSP);

	llc_pdu_init_as_xid_rsp(nskb, LLC_XID_NULL_CLASS_2, 0);

	rc = llc_mac_hdr_init(nskb, mac_sa, mac_da);

	if (!rc)

	if (likely(!rc))

		rc = dev_queue_xmit(nskb);

out:

	return rc;
@@ -134,7 +134,7 @@ int llc_sap_action_send_test_c(struct llc_sap *sap, struct sk_buff *skb) 
			    ev->daddr.lsap, LLC_PDU_CMD);

	llc_pdu_init_as_test_cmd(skb);

	rc = llc_mac_hdr_init(skb, ev->saddr.mac, ev->daddr.mac);

	if (!rc)

	if (likely(!rc))

		rc = dev_queue_xmit(skb);

	return rc;

}
@@ -155,7 +155,7 @@ int llc_sap_action_send_test_r(struct llc_sap *sap, struct sk_buff *skb) 
			    LLC_PDU_RSP);

	llc_pdu_init_as_test_rsp(nskb, skb);

	rc = llc_mac_hdr_init(nskb, mac_sa, mac_da);

	if (!rc)

	if (likely(!rc))

		rc = dev_queue_xmit(nskb);

out:

	return rc;