https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194314
--- Comment #10 from Garrett Cooper <n...@freebsd.org> --- (In reply to Eric Joyner from comment #8) > So it sounds like we may just need to change IXGBE_RX_COPY_LEN from a fixed > value of 160 to something that's calculated based on the length of struct > m_hdr and struct m_pkthdr combined. > > I think they got 160 by adding together the size of the two header structs > (88 in FreeBSD amd64), adding some number (8) to make that size divisible by > 32 (96 % 32 == 0), and then subtracted that from MSIZE (256) to get > IXGBE_RX_COPY_LEN (160), while keeping the padding added as > IXGBE_RX_COPY_ALIGN. A couple questions then: - What architectures is this driver supported on? - Is this optimization only valid for amd64? - Why 32? -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
