Commit 44764812 authored by Dmitry Tarnyagin's avatar Dmitry Tarnyagin Committed by David S. Miller
Browse files

caif: set traffic class for caif packets 



Set traffic class for CAIF packets, based on socket
priority, CAIF protocol type, or type of message.

Traffic class mapping for different packet types:
 - control:       TC_PRIO_CONTROL;
 - flow control:  TC_PRIO_CONTROL;
 - at:            TC_PRIO_CONTROL;
 - rfm:           TC_PRIO_INTERACTIVE_BULK;
 - other sockets: equals to socket's TC;
 - network data:  no change.

Signed-off-by: default avatarDmitry Tarnyagin <dmitry.tarnyagin@stericsson.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e65ac4d5

include/net/caif/cfpkt.h

+8 −1
Original line number Diff line number Diff line
@@ -188,11 +188,18 @@ struct cfpkt *cfpkt_fromnative(enum caif_direction dir, void *nativepkt); 
 */

void *cfpkt_tonative(struct cfpkt *pkt);





/*

 * Returns packet information for a packet.

 * pkt Packet to get info from;

 * @return Packet information

 */

struct caif_payload_info *cfpkt_info(struct cfpkt *pkt);



/** cfpkt_set_prio - set priority for a CAIF packet.

 *

 * @pkt: The CAIF packet to be adjusted.

 * @prio: one of TC_PRIO_ constants.

 */

void cfpkt_set_prio(struct cfpkt *pkt, int prio);



#endif				/* CFPKT_H_ */

net/caif/caif_socket.c

+14 −2
Original line number Diff line number Diff line
@@ -19,7 +19,7 @@ 
#include <linux/uaccess.h>

#include <linux/debugfs.h>

#include <linux/caif/caif_socket.h>

#include <linux/atomic.h>

#include <linux/pkt_sched.h>

#include <net/sock.h>

#include <net/tcp_states.h>

#include <net/caif/caif_layer.h>
@@ -505,6 +505,7 @@ static int transmit_skb(struct sk_buff *skb, struct caifsock *cf_sk, 


	pkt = cfpkt_fromnative(CAIF_DIR_OUT, skb);

	memset(skb->cb, 0, sizeof(struct caif_payload_info));

	cfpkt_set_prio(pkt, cf_sk->sk.sk_priority);



	if (cf_sk->layer.dn == NULL) {

		kfree_skb(skb);
@@ -1062,6 +1063,18 @@ static int caif_create(struct net *net, struct socket *sock, int protocol, 
	/* Store the protocol */

	sk->sk_protocol = (unsigned char) protocol;



	/* Initialize default priority for well-known cases */

	switch (protocol) {

	case CAIFPROTO_AT:

		sk->sk_priority = TC_PRIO_CONTROL;

		break;

	case CAIFPROTO_RFM:

		sk->sk_priority = TC_PRIO_INTERACTIVE_BULK;

		break;

	default:

		sk->sk_priority = TC_PRIO_BESTEFFORT;

	}



	/*

	 * Lock in order to try to stop someone from opening the socket

	 * too early.
@@ -1081,7 +1094,6 @@ static int caif_create(struct net *net, struct socket *sock, int protocol, 
	set_rx_flow_on(cf_sk);



	/* Set default options on configuration */

	cf_sk->sk.sk_priority = CAIF_PRIO_NORMAL;

	cf_sk->conn_req.link_selector = CAIF_LINK_LOW_LATENCY;

	cf_sk->conn_req.protocol = protocol;

	release_sock(&cf_sk->sk);

net/caif/cfctrl.c

+4 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <linux/stddef.h>

#include <linux/spinlock.h>

#include <linux/slab.h>

#include <linux/pkt_sched.h>

#include <net/caif/caif_layer.h>

#include <net/caif/cfpkt.h>

#include <net/caif/cfctrl.h>
@@ -189,6 +190,7 @@ void cfctrl_enum_req(struct cflayer *layer, u8 physlinkid) 
	cfctrl->serv.dev_info.id = physlinkid;

	cfpkt_addbdy(pkt, CFCTRL_CMD_ENUM);

	cfpkt_addbdy(pkt, physlinkid);

	cfpkt_set_prio(pkt, TC_PRIO_CONTROL);

	dn->transmit(dn, pkt);

}
@@ -281,6 +283,7 @@ int cfctrl_linkup_request(struct cflayer *layer, 
	 *	might arrive with the newly allocated channel ID.

	 */

	cfpkt_info(pkt)->dev_info->id = param->phyid;

	cfpkt_set_prio(pkt, TC_PRIO_CONTROL);

	ret =

	    dn->transmit(dn, pkt);

	if (ret < 0) {
@@ -314,6 +317,7 @@ int cfctrl_linkdown_req(struct cflayer *layer, u8 channelid, 
	cfpkt_addbdy(pkt, CFCTRL_CMD_LINK_DESTROY);

	cfpkt_addbdy(pkt, channelid);

	init_info(cfpkt_info(pkt), cfctrl);

	cfpkt_set_prio(pkt, TC_PRIO_CONTROL);

	ret =

	    dn->transmit(dn, pkt);

#ifndef CAIF_NO_LOOP

net/caif/cfpkt_skbuff.c

+7 −0
Original line number Diff line number Diff line
@@ -381,6 +381,7 @@ struct cfpkt *cfpkt_split(struct cfpkt *pkt, u16 pos) 
	memcpy(skb2->data, split, len2nd);

	skb2->tail += len2nd;

	skb2->len += len2nd;

	skb2->priority = skb->priority;

	return skb_to_pkt(skb2);

}
@@ -394,3 +395,9 @@ struct caif_payload_info *cfpkt_info(struct cfpkt *pkt) 
	return (struct caif_payload_info *)&pkt_to_skb(pkt)->cb;

}

EXPORT_SYMBOL(cfpkt_info);



void cfpkt_set_prio(struct cfpkt *pkt, int prio)

{

	pkt_to_skb(pkt)->priority = prio;

}

EXPORT_SYMBOL(cfpkt_set_prio);

net/caif/cfsrvl.c

+3 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <linux/errno.h>

#include <linux/slab.h>

#include <linux/module.h>

#include <linux/pkt_sched.h>

#include <net/caif/caif_layer.h>

#include <net/caif/cfsrvl.h>

#include <net/caif/cfpkt.h>
@@ -120,6 +121,7 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl) 
			info->channel_id = service->layer.id;

			info->hdr_len = 1;

			info->dev_info = &service->dev_info;

			cfpkt_set_prio(pkt, TC_PRIO_CONTROL);

			return layr->dn->transmit(layr->dn, pkt);

		}

	case CAIF_MODEMCMD_FLOW_OFF_REQ:
@@ -140,6 +142,7 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl) 
			info->channel_id = service->layer.id;

			info->hdr_len = 1;

			info->dev_info = &service->dev_info;

			cfpkt_set_prio(pkt, TC_PRIO_CONTROL);

			return layr->dn->transmit(layr->dn, pkt);

		}

	default:

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