Question on TSO/LSO Transmit Frames

Hi All, Is it safe to assume that when a driver receives an Ethernet frame to transmit with CSUM_TSO bit set in m_head->m_pkthdr.csum_flags ; where m_head is the first (struct mbuf) in the mbuf chain that the [Ethernet Header] + [VLAN Tag if present] + [IP Header] + [TCP Header] are all pres

iSCSI Target For Freebsd

Hi All, Is there are an iSCSI Software Target that you can recommend. I have tried using istgt ( on Freebsd7.2) with Windows iSCSI Software Initiator. The initiator is able to discover the target however it is unable to login to the target. The login Response shows that the = <0203> indicatin

RE: iSCSI Target For Freebsd

From: Dan Nelson [mailto:dnel...@allantgroup.com] Sent: Friday, March 09, 2012 7:49 AM To: David Somayajulu Cc: freebsd-net@freebsd.org Subject: Re: iSCSI Target For Freebsd In the last episode (Mar 08), David Somayajulu said: > Is there are an iSCSI Software Target that you can recommend. I have

Ethernet Drivers: Question on ifp->if_ioctl invocation for SIOCADDMULTI and SIOCDELMULTI

Hi All, When ifp->if_ioctl() is invoked for the ioctl cmd SIOCADDMULTI, IN_MULTI_LOCK() is called in one of the functions in_joingroup() in the caller stack. >From netinet/in_var.h, line 357 : #define IN_MULTI_LOCK() >mtx_lock(&in_multi_mtx) >From netinet/in_mcast.c 1098 in_joi

Setting User Priority Bits in VLAN Tag

Hi All, How does one specify the User Priority Bits (Bits 15 - 13) in a VLAN Tag in FreeBSD. It appears that it is not possible currently, but I am not sure. Thanks David S. This message and any attached documents contain information from QLogic Corporation or it

Ethernet Drivers: Question on Sending Received Packets to the FreeBSD Network Stack

Hi All, While sending the Received Ethernet Frames (non - LRO case) to the FreeBSD Network Stack via (struct ifnet *)->if_input((struct ifnet *), (struct *mbuf)); Is it possible to send multiple Ethernet Frames in a single invocation of the above callback function? In other words should (stru

Questions on LRO and Delayed ACK

Hi All, 1. If there is hardware support for LRO, (where the hardware delivers coalesces a bunch of consecutive TCP segments into one large TCP Segment), is it enough for the driver to simply post the segment to the host stack via ifp->if_input() ? I mean is there a need to run thru tcp_l

Setting up a running FreeBSD/PCBSD system to enter kgdb on panic

Hi All, Is there some way I can setup a running FreeBSD - (I use PCBSD7.2) - to break into kgdb when the system panics. I am trying to get a stack trace when "Fatal trap 12: page fault while in kernel mode" happens. thanks david S. This message and any attached d

OFED support on FreeBSD

Hi All, What is the current support for OFED on FreeBSD ? Are there any drivers which support either RoCE or iWARP ? Thanks David Somayajulu This message and any attached documents contain information from QLogic Corporation or its wholly-owned subsidiaries

Question on mbufs

Hi All, When indicating a chain of mbufs to the network via ifp->if_input(), what are the repercussions of setting M_PKTHDR bit in all the mbufs in the chain, instead of just the first mbuf ? Thanks David S. This message and any attached documents contain inform

RE: [Bug 206581] bxe_ioctl_nvram handler is faulty

> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=206581 This happens to be dead/unused code. I have made a commit https://reviews.freebsd.org/rS298496 to delete it. Thanks David S (davi...@freebsd.org) ___ freebsd-net@freebsd.org mailing list h

Questions on iflib

Hi All, I have a couple of questions on iflib : 1. Are there plans to incorporate iflib into CURRENT. If yes, will it make it into FreeBSD11 release ? 2. Where can I get the latest patch of iflib for FreeBSD_CURRENT ? Thanks David S (davi...@freebsd.org)

RE: Questions on iflib

panchasara Cc: freebsd-net@freebsd.org; sco...@freebsd.org; freebsd-driv...@freebsd.org; David Somayajulu Subject: Re: Questions on iflib I'm waiting on erj to commit his ixl update. It will go in immediately following that with an ixgbe and ixl driver. It would have also included a bxe driver, bu

RE: [Bug 208977] bxe driver causes packet corruption with RLO activated

Please sync up with the latest code from stable_10 ( https://svnweb.freebsd.org/base/stable/10/sys/dev/bxe ). The following might be the cause. https://svnweb.freebsd.org/base?view=revision&revision=293787 If the issue still persists please let me know. Thanks David S. -Original Message

IPV6 LRO in FreeBSD7.4 or Stable_7

Hi, Is IPv6 LRO support available in FreeBSD7.4 or Stable_7 ? Examining tcp_input() in netinet/tcp_input.c, it appears that it is not. Just want to make sure I didn't miss anything. Thanks David S. ___ freebsd-net@freebsd.org mailing list https://lists