As far i have read the packet reception i have found out that When working in interrupt driven model, the nic registers an interrupt handler; • This interrupt handler will be called when a frame is received; • Typically in the handler, we allocate sk buff by calling dev alloc skb(); • Copies data from nic’s buffer to this struct just created; • nic call generic reception routine netif rx(); • netif rx() put frame in per cpu queue; • if queue is full, drop!
BUT i didn't found the netif_rx() in the following link http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/e100.c#L2204 On Sun, Apr 7, 2013 at 8:52 PM, Rami Rosen <[email protected]> wrote: > Hi, > we have in : > http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/e100.c > > struct nic { > /* Begin: frequently used values: keep adjacent for cache effect */ > u32 msg_enable ____cacheline_aligned; > struct net_device *netdev; > struct pci_dev *pdev; > ... > ... > > And indeed nic->netdev represents an Ethernet interface, which > is the struct net_device (see: include/linux/netdevice.h) > > Regards, > Rami Rosen > http://ramirose.wix.com/ramirosen > > > On Sun, Apr 7, 2013 at 5:52 AM, ishare <[email protected]> wrote: > > On Fri, Apr 05, 2013 at 03:06:37PM +0300, Rami Rosen wrote: > >> Robert, > >> You should look for the request_irq() method in the driver. > >> This method registers an interrupt handler. > >> For example, you can look in: > >> http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/e100.c > >> ... > >> ... > >> if ((err = request_irq(nic->pdev->irq, e100_intr, IRQF_SHARED, > >> nic->netdev->name, nic->netdev))) > >> > >> ... > >> > >> This means that e100_intr is registered as an interrupt handler. > > > > Is this nic->netdev represent a Ethernet interface ? > > > > > >> > >> Best, > >> Rami Rosen > >> http://ramirose.wix.com/ramirosen > >> > >> > >> On Fri, Apr 5, 2013 at 11:50 AM, Robert Clove <[email protected]> > wrote: > >> > Hello All, > >> > > >> > > >> > I am new here. > >> > I want to know the interrupt handler of the ethernet card and where > can i > >> > find the definition of it so as i can clear the flow of packet > reception. > >> > > >> > Thanks > >> > Robert > >> > > >> > _______________________________________________ > >> > Kernelnewbies mailing list > >> > [email protected] > >> > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > >> > > >> > >> _______________________________________________ > >> Kernelnewbies mailing list > >> [email protected] > >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
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