Re: Memory providers multiplexing (Was: [PATCH net-next v4 4/5] page_pool: remove PP_FLAG_PAGE_FRAG flag)
From: David Ahern <dsahern@kernel.org>
Date: 2023-07-03 17:26:06
Also in:
linux-mediatek, linux-rdma, linux-wireless, lkml, netdev
On 7/3/23 11:15 AM, Eric Dumazet wrote:
On Mon, Jul 3, 2023 at 4:45 PM David Ahern [off-list ref] wrote:quoted
That is my expectation. The tcpdump is just an easy example of accessing the skb page frags. skb_copy_and_csum_bits used by icmp is another example that can walk frags wanting access to device memory. You did not cause a panic or trip a WARN_ON for example with the tcpdump?ICMP packets do not land on the queues having devmem buffers, for obvious reasons.
I was not referring to ICMP packets coming in to the nic, but rather an icmp getting triggered during stack processing.
Only chosen TCP flows are steered to these queues.
of course. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel