Lines Matching +full:no +full:- +full:loopback +full:- +full:test

15 -----------------------
40 ---------
43 netdev 2.1. For more in-depth information see that paper and talk,
53     [PATCH net-next v4 0/9] socket sendmsg MSG_ZEROCOPY
54     https://lore.kernel.org/netdev/20170803202945.70750-1-willemdebruijn.kernel@gmail.com
64 ------------
77 ------------
86 A zerocopy failure will return -1 with errno ENOBUFS. This happens if
101 -------------
108 maintains an internal unsigned 32-bit counter. Each send call with
121 Reading from the error queue is always a non-blocking operation. The
130 	if (poll(&pfd, 1, -1) != 1 || pfd.revents & POLLERR == 0)
134 	if (ret == -1)
162 For protocols that acknowledge data in-order, like TCP, each
163 notification can be squashed into the previous one, so that no more
186 The 32-bit notification range is encoded as [ee_info, ee_data]. This
196 	if (cm->cmsg_level != SOL_IP &&
197 	    cm->cmsg_type != IP_RECVERR)
201 	if (serr->ee_errno != 0 ||
202 	    serr->ee_origin != SO_EE_ORIGIN_ZEROCOPY)
205 	printf("completed: %u..%u\n", serr->ee_info, serr->ee_data);
216 scatter-gather I/O cannot send packets made up of kernel generated
227 system call, if the data is no longer warm in the cache. The process
228 also incurs notification processing cost for no benefit. For this
238 Loopback  section in Implementation
239 --------
249 Data path sent to local sockets is the same as for non-local sockets.
257 Be cognizant of the loopback constraint. The test can be run between
260 namespaces, the test will not show any improvement. For testing, the
261 loopback restriction can be temporarily relaxed by making