netdev - Re: what is the use of poll function int a net

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAKoUArmq0+aMdMyDvRu+fCJXynrqywpeJiajG=84YCxdFV-GKg@mail.gmail.com>
Date:	Tue, 15 Jan 2013 15:20:39 +0200
From:	Rami Rosen <roszenrami@...il.com>
To:	horseriver <horserivers@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: what is the use of poll function int a net_device struct

Hi,

On Mon, Jan 14, 2013 at 4:21 PM, horseriver <horserivers@...il.com> wrote:
> Where is the handler function defined  for an netcard's  IRQ

look for the request_irq() method; you register the handler with this method.

for example,
in e1000e:

http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/e1000e/netdev.c

err = request_irq(adapter->msix_entries[vector].vector,
                           e1000_intr_msix_rx, 0,
                          adapter->rx_ring->name,
                             netdev);

so the handler is   e1000_intr_msix_rx().

When an IRQ has reached,  how to wake_up the wait_queue of the socket?
TCP/UDP packet goes up from the driver to L3 and then to L4 (in case
it is for this machine). In L4 you should find the
wake_up of the wait_queue of the socket.

Regards,
Rami Rosen
http://ramirose.wix.com/ramirosen
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html