[WAN]: converting generic HDLC to use netif_dormant*()
This patch converts generic HDLC (and WAN drivers using it) from hdlc_set_carrier() to netif_dormant*() interface. WAN hardware drivers should now use netif_carrier_on|off() like other network drivers. Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: David S. Miller <davem@davemloft.net>hifive-unleashed-5.1
Krzysztof Halasa
David S. Miller
parent
b47b2ec198
commit
c2ce920468
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@ -116,27 +116,33 @@ static inline void openwin(card_t *card, u8 page)
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#include "hd6457x.c"
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static inline void set_carrier(port_t *port)
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{
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if (!sca_in(MSCI1_OFFSET + ST3, port) & ST3_DCD)
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netif_carrier_on(port_to_dev(port));
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else
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netif_carrier_off(port_to_dev(port));
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}
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static void sca_msci_intr(port_t *port)
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{
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struct net_device *dev = port_to_dev(port);
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card_t* card = port_to_card(port);
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u8 stat = sca_in(MSCI1_OFFSET + ST1, card); /* read MSCI ST1 status */
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u8 stat = sca_in(MSCI1_OFFSET + ST1, port); /* read MSCI ST1 status */
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/* Reset MSCI TX underrun status bit */
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sca_out(stat & ST1_UDRN, MSCI0_OFFSET + ST1, card);
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sca_out(stat & ST1_UDRN, MSCI0_OFFSET + ST1, port);
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if (stat & ST1_UDRN) {
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struct net_device_stats *stats = hdlc_stats(dev);
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struct net_device_stats *stats = hdlc_stats(port_to_dev(port));
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stats->tx_errors++; /* TX Underrun error detected */
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stats->tx_fifo_errors++;
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}
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/* Reset MSCI CDCD status bit - uses ch#2 DCD input */
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sca_out(stat & ST1_CDCD, MSCI1_OFFSET + ST1, card);
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sca_out(stat & ST1_CDCD, MSCI1_OFFSET + ST1, port);
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if (stat & ST1_CDCD)
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hdlc_set_carrier(!(sca_in(MSCI1_OFFSET + ST3, card) & ST3_DCD),
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dev);
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set_carrier(port);
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}
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@ -190,7 +196,7 @@ static int c101_open(struct net_device *dev)
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sca_out(IE1_UDRN, MSCI0_OFFSET + IE1, port);
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sca_out(IE0_TXINT, MSCI0_OFFSET + IE0, port);
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hdlc_set_carrier(!(sca_in(MSCI1_OFFSET + ST3, port) & ST3_DCD), dev);
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set_carrier(port);
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printk(KERN_DEBUG "0x%X\n", sca_in(MSCI1_OFFSET + ST3, port));
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/* enable MSCI1 CDCD interrupt */
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@ -378,7 +384,7 @@ static int __init c101_run(unsigned long irq, unsigned long winbase)
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}
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sca_init_sync_port(card); /* Set up C101 memory */
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hdlc_set_carrier(!(sca_in(MSCI1_OFFSET + ST3, card) & ST3_DCD), dev);
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set_carrier(card);
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printk(KERN_INFO "%s: Moxa C101 on IRQ%u,"
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" using %u TX + %u RX packets rings\n",
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@ -168,6 +168,23 @@ static inline u32 buffer_offset(port_t *port, u16 desc, int transmit)
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}
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static inline void sca_set_carrier(port_t *port)
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{
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if (!(sca_in(get_msci(port) + ST3, port_to_card(port)) & ST3_DCD)) {
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#ifdef DEBUG_LINK
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printk(KERN_DEBUG "%s: sca_set_carrier on\n",
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port_to_dev(port)->name);
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#endif
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netif_carrier_on(port_to_dev(port));
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} else {
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#ifdef DEBUG_LINK
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printk(KERN_DEBUG "%s: sca_set_carrier off\n",
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port_to_dev(port)->name);
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#endif
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netif_carrier_off(port_to_dev(port));
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}
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}
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static void sca_init_sync_port(port_t *port)
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{
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@ -237,9 +254,7 @@ static void sca_init_sync_port(port_t *port)
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sca_out(DIR_BOFE, DIR_TX(phy_node(port)), card);
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}
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}
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hdlc_set_carrier(!(sca_in(get_msci(port) + ST3, card) & ST3_DCD),
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port_to_dev(port));
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sca_set_carrier(port);
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}
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@ -262,8 +277,7 @@ static inline void sca_msci_intr(port_t *port)
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}
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if (stat & ST1_CDCD)
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hdlc_set_carrier(!(sca_in(msci + ST3, card) & ST3_DCD),
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port_to_dev(port));
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sca_set_carrier(port);
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}
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#endif
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@ -566,7 +580,7 @@ static void sca_open(struct net_device *dev)
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- all DMA interrupts
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*/
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hdlc_set_carrier(!(sca_in(msci + ST3, card) & ST3_DCD), dev);
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sca_set_carrier(port);
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#ifdef __HD64570_H
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/* MSCI TX INT and RX INT A IRQ enable */
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@ -192,9 +192,7 @@ static int cisco_rx(struct sk_buff *skb)
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"uptime %ud%uh%um%us)\n",
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dev->name, days, hrs,
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min, sec);
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#if 0
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netif_carrier_on(dev);
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#endif
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netif_dormant_off(dev);
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hdlc->state.cisco.up = 1;
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}
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}
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@ -227,9 +225,7 @@ static void cisco_timer(unsigned long arg)
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hdlc->state.cisco.settings.timeout * HZ)) {
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hdlc->state.cisco.up = 0;
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printk(KERN_INFO "%s: Link down\n", dev->name);
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#if 0
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netif_carrier_off(dev);
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#endif
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netif_dormant_on(dev);
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}
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cisco_keepalive_send(dev, CISCO_KEEPALIVE_REQ,
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@ -265,10 +261,7 @@ static void cisco_stop(struct net_device *dev)
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{
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hdlc_device *hdlc = dev_to_hdlc(dev);
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del_timer_sync(&hdlc->state.cisco.timer);
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#if 0
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if (netif_carrier_ok(dev))
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netif_carrier_off(dev);
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#endif
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netif_dormant_on(dev);
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hdlc->state.cisco.up = 0;
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hdlc->state.cisco.request_sent = 0;
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}
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@ -328,6 +321,7 @@ int hdlc_cisco_ioctl(struct net_device *dev, struct ifreq *ifr)
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dev->type = ARPHRD_CISCO;
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dev->flags = IFF_POINTOPOINT | IFF_NOARP;
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dev->addr_len = 0;
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netif_dormant_on(dev);
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return 0;
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}
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@ -301,7 +301,7 @@ static int pvc_open(struct net_device *dev)
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if (pvc->open_count++ == 0) {
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hdlc_device *hdlc = dev_to_hdlc(pvc->master);
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if (hdlc->state.fr.settings.lmi == LMI_NONE)
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pvc->state.active = hdlc->carrier;
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pvc->state.active = netif_carrier_ok(pvc->master);
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pvc_carrier(pvc->state.active, pvc);
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hdlc->state.fr.dce_changed = 1;
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@ -545,11 +545,7 @@ static void fr_set_link_state(int reliable, struct net_device *dev)
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hdlc->state.fr.reliable = reliable;
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if (reliable) {
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#if 0
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if (!netif_carrier_ok(dev))
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netif_carrier_on(dev);
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#endif
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netif_dormant_off(dev);
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hdlc->state.fr.n391cnt = 0; /* Request full status */
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hdlc->state.fr.dce_changed = 1;
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@ -562,11 +558,7 @@ static void fr_set_link_state(int reliable, struct net_device *dev)
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}
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}
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} else {
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#if 0
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if (netif_carrier_ok(dev))
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netif_carrier_off(dev);
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#endif
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netif_dormant_on(dev);
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while (pvc) { /* Deactivate all PVCs */
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pvc_carrier(0, pvc);
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pvc->state.exist = pvc->state.active = 0;
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@ -34,10 +34,11 @@
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#include <linux/inetdevice.h>
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#include <linux/lapb.h>
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#include <linux/rtnetlink.h>
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#include <linux/notifier.h>
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#include <linux/hdlc.h>
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static const char* version = "HDLC support module revision 1.18";
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static const char* version = "HDLC support module revision 1.19";
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#undef DEBUG_LINK
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@ -73,57 +74,51 @@ static int hdlc_rcv(struct sk_buff *skb, struct net_device *dev,
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static void __hdlc_set_carrier_on(struct net_device *dev)
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static inline void hdlc_proto_start(struct net_device *dev)
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{
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hdlc_device *hdlc = dev_to_hdlc(dev);
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if (hdlc->proto.start)
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return hdlc->proto.start(dev);
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#if 0
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#ifdef DEBUG_LINK
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if (netif_carrier_ok(dev))
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printk(KERN_ERR "hdlc_set_carrier_on(): already on\n");
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#endif
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netif_carrier_on(dev);
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#endif
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}
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static void __hdlc_set_carrier_off(struct net_device *dev)
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static inline void hdlc_proto_stop(struct net_device *dev)
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{
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hdlc_device *hdlc = dev_to_hdlc(dev);
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if (hdlc->proto.stop)
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return hdlc->proto.stop(dev);
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#if 0
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#ifdef DEBUG_LINK
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if (!netif_carrier_ok(dev))
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printk(KERN_ERR "hdlc_set_carrier_off(): already off\n");
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#endif
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netif_carrier_off(dev);
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#endif
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}
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void hdlc_set_carrier(int on, struct net_device *dev)
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static int hdlc_device_event(struct notifier_block *this, unsigned long event,
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void *ptr)
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{
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hdlc_device *hdlc = dev_to_hdlc(dev);
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struct net_device *dev = ptr;
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hdlc_device *hdlc;
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unsigned long flags;
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on = on ? 1 : 0;
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int on;
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if (dev->get_stats != hdlc_get_stats)
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return NOTIFY_DONE; /* not an HDLC device */
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if (event != NETDEV_CHANGE)
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return NOTIFY_DONE; /* Only interrested in carrier changes */
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on = netif_carrier_ok(dev);
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#ifdef DEBUG_LINK
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printk(KERN_DEBUG "hdlc_set_carrier %i\n", on);
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printk(KERN_DEBUG "%s: hdlc_device_event NETDEV_CHANGE, carrier %i\n",
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dev->name, on);
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#endif
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hdlc = dev_to_hdlc(dev);
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spin_lock_irqsave(&hdlc->state_lock, flags);
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if (hdlc->carrier == on)
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goto carrier_exit; /* no change in DCD line level */
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#ifdef DEBUG_LINK
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printk(KERN_INFO "%s: carrier %s\n", dev->name, on ? "ON" : "off");
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#endif
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hdlc->carrier = on;
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if (!hdlc->open)
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@ -131,14 +126,15 @@ void hdlc_set_carrier(int on, struct net_device *dev)
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if (hdlc->carrier) {
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printk(KERN_INFO "%s: Carrier detected\n", dev->name);
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__hdlc_set_carrier_on(dev);
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hdlc_proto_start(dev);
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} else {
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printk(KERN_INFO "%s: Carrier lost\n", dev->name);
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__hdlc_set_carrier_off(dev);
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hdlc_proto_stop(dev);
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}
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carrier_exit:
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spin_unlock_irqrestore(&hdlc->state_lock, flags);
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return NOTIFY_DONE;
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}
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@ -165,7 +161,7 @@ int hdlc_open(struct net_device *dev)
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if (hdlc->carrier) {
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printk(KERN_INFO "%s: Carrier detected\n", dev->name);
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__hdlc_set_carrier_on(dev);
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hdlc_proto_start(dev);
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} else
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printk(KERN_INFO "%s: No carrier\n", dev->name);
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@ -190,7 +186,7 @@ void hdlc_close(struct net_device *dev)
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hdlc->open = 0;
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if (hdlc->carrier)
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__hdlc_set_carrier_off(dev);
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hdlc_proto_stop(dev);
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spin_unlock_irq(&hdlc->state_lock);
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@ -303,7 +299,6 @@ MODULE_LICENSE("GPL v2");
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EXPORT_SYMBOL(hdlc_open);
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EXPORT_SYMBOL(hdlc_close);
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EXPORT_SYMBOL(hdlc_set_carrier);
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EXPORT_SYMBOL(hdlc_ioctl);
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EXPORT_SYMBOL(hdlc_setup);
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EXPORT_SYMBOL(alloc_hdlcdev);
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@ -315,9 +310,18 @@ static struct packet_type hdlc_packet_type = {
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};
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static struct notifier_block hdlc_notifier = {
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.notifier_call = hdlc_device_event,
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};
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static int __init hdlc_module_init(void)
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{
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int result;
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printk(KERN_INFO "%s\n", version);
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if ((result = register_netdevice_notifier(&hdlc_notifier)) != 0)
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return result;
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dev_add_pack(&hdlc_packet_type);
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return 0;
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}
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@ -327,6 +331,7 @@ static int __init hdlc_module_init(void)
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static void __exit hdlc_module_exit(void)
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{
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dev_remove_pack(&hdlc_packet_type);
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unregister_netdevice_notifier(&hdlc_notifier);
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}
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@ -149,7 +149,10 @@ static inline void wanxl_cable_intr(port_t *port)
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printk(KERN_INFO "%s: %s%s module, %s cable%s%s\n",
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port->dev->name, pm, dte, cable, dsr, dcd);
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hdlc_set_carrier(value & STATUS_CABLE_DCD, port->dev);
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if (value & STATUS_CABLE_DCD)
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netif_carrier_on(port->dev);
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else
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netif_carrier_off(port->dev);
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}
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@ -224,8 +224,6 @@ static __inline__ void debug_frame(const struct sk_buff *skb)
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int hdlc_open(struct net_device *dev);
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/* Must be called by hardware driver when HDLC device is being closed */
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void hdlc_close(struct net_device *dev);
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/* Called by hardware driver when DCD line level changes */
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void hdlc_set_carrier(int on, struct net_device *dev);
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/* May be used by hardware driver to gain control over HDLC device */
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static __inline__ void hdlc_proto_detach(hdlc_device *hdlc)
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