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Message-Id: <20190403050118.12785-4-ms@dev.tdt.de> Date: Wed, 3 Apr 2019 07:01:18 +0200 From: Martin Schiller <ms@....tdt.de> To: andrew.hendry@...il.com, davem@...emloft.net, khc@...waw.pl, isdn@...ux-pingi.de Cc: edumazet@...gle.com, linux-x25@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Martin Schiller <ms@....tdt.de> Subject: [PATCH 4/4] isdn/i4l: Call notifiers before and after changing device type Signed-off-by: Martin Schiller <ms@....tdt.de> --- drivers/isdn/i4l/isdn_net.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c index c138f66f2659..3016cbcc719a 100644 --- a/drivers/isdn/i4l/isdn_net.c +++ b/drivers/isdn/i4l/isdn_net.c @@ -2692,8 +2692,12 @@ isdn_net_setcfg(isdn_net_ioctl_cfg *cfg) p->dev->name); return -EINVAL; #else + rtnl_lock(); + call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, p->dev); p->dev->type = ARPHRD_PPP; /* change ARP type */ + call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, p->dev); p->dev->addr_len = 0; + rtnl_unlock(); #endif break; case ISDN_NET_ENCAP_X25IFACE: @@ -2702,16 +2706,27 @@ isdn_net_setcfg(isdn_net_ioctl_cfg *cfg) p->dev->name); return -EINVAL; #else + rtnl_lock(); + call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, p->dev); p->dev->type = ARPHRD_X25; /* change ARP type */ + call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, p->dev); p->dev->addr_len = 0; + rtnl_unlock(); #endif break; case ISDN_NET_ENCAP_CISCOHDLCK: break; default: if (cfg->p_encap >= 0 && - cfg->p_encap <= ISDN_NET_ENCAP_MAX_ENCAP) + cfg->p_encap <= ISDN_NET_ENCAP_MAX_ENCAP) { + rtnl_lock(); + call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, p->dev); + p->dev->type = ARPHRD_ETHER; /* change ARP type */ + call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, p->dev); + p->dev->addr_len = ETH_ALEN; + rtnl_unlock(); break; + } printk(KERN_WARNING "%s: encapsulation protocol %d not supported\n", p->dev->name, cfg->p_encap); -- 2.11.0
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