search for: tcp_output

Hi , I have posted DTrace script to snoop tcp traffic and also provided a wrapper script for it to filter out unwanted traffic. http://blogs.sun.com/roller/comments/raviswam/Weblog/tcp_snoop_using_dtrace Please let me know if you have any feedback/comments on this. Thanks Ravi

i''m using the following probe to calculate how many bytes are being written by tcp write calls, by process and total: fbt:ip:tcp_output:entry { this->tcpout_size = msgdsize(args[1]); @tcpout_size[execname] = sum(this->tcpout_size); @tcpout_size["TOTAL_TCP_OUT"] = sum(this->tcpout_size); } I run this probe for N seconds. I suppose that if i get the tcpout_size["TOTAL_TCP_OUT"] value and i divi...

...#6 0xc06bfb46 in ether_output (ifp=0xc1646400, m=0xc16e5600, dst=0xc1a16330, rt0=0xc1816840) at ../../../net/if_ethersubr.c:161 #7 0xc06f3662 in ip_output (m=0xc16e5600, opt=0xc16e56ec, ro=0xc1a1632c, flags=0, imo=0x0, inp=0xc186d654) at ../../../netinet/ip_output.c:778 #8 0xc06fca6a in tcp_output (tp=0xc186fac8) at ../../../netinet/tcp_output.c:1080 #9 0xc0704bbc in tcp_disconnect (tp=0xc186fac8) at ../../../netinet/tcp_usrreq.c:1253 #10 0xc07034c0 in tcp_usr_disconnect (so=0x12) at ../../../netinet/tcp_usrreq.c:443 #11 0xc0689822 in sodisconnect (so=0x0) at ../../../kern/uipc_socket.c:576...

...h.a /usr/lib/libssh.so.4 /usr/lib/libssh_p.a /usr/sbin/dnssec-signzone /usr/sbin/lwresd /usr/sbin/named /usr/sbin/named-checkconf /usr/sbin/named-checkzone /usr/sbin/named-compilezone /usr/sbin/sshd /usr/src/sys/conf/newvers.sh /usr/src/sys/netinet/tcp.h /usr/src/sys/netinet/tcp_output.c While there is a new file for /usr/sbin/named, it isn't reporting the updated version: $ /usr/sbin/named -v BIND 9.4.2 Any thoughts? thanks in advance, mark

...ionality of the time-matching extension for iptables. Specifically, the kernel patch called "tcp: provide earliest departure time in skb->tstamp" [1] will result in the 'skb->tstamp' NOT being zeroed before entering the IP stack. This change was introduced (in "net/ipv4/tcp_output.c") with the following patch: - /* Our usage of tstamp should remain private */ - skb->tstamp = 0; + /* Leave earliest departure time in skb->tstamp (skb->skb_mstamp_ns) */ Now that the timestamp no longer is cleared, this will end up causing incorrect matching in function 'time_...

https://bugzilla.netfilter.org/show_bug.cgi?id=847 Summary: Owner matching fails on listening socket Product: netfilter/iptables Version: unspecified Platform: x86_64 OS/Version: Debian GNU/Linux Status: NEW Severity: enhancement Priority: P5 Component: ip_tables (kernel) AssignedTo:

I have a question about tcp layer of linux kernel. I want, Syn and ack packages received to server will be counted. [image: enter image description here] where total_syn_count and total_ack_count are variables to be defined and will be increased Which files to be used ???? tcp_input.c ,tcp_output.c , tcp_ipv4.c

...-;) > > This looks like a bug in the client's TCP/IP stack, and how to fix it > depends on the client's OS. IMO, the RST is invalid, and pf is > right in > blocking it. The OS is Darwin 8.8 / Mac OS X 10.4.8, a 4.4BSD descendant and the relevant source may be in netinet/tcp_output.c, found here http://www.opensource.apple.com/darwinsource/10.4.8.ppc/xnu-792.12.6 Good news is that your diagnosis could bring us forward to resolve a long running painful bug filed against Mail.app, the Apple email client. If you agree, I would like to add your diagnosis to my open bug repo...

... [ 176.025679] random: crng init done [ 411.168635] netem: version 1.3 [ 456.059840] ------------[ cut here ]------------ [ 456.059849] WARNING: CPU: 4 PID: 1918 at net/ipv4/tcp_output.c:1048 tcp_set_skb_tso_segs+0xeb/0x100 [ 456.059851] Modules linked in: sch_netem cirrus ttm drm_kms_helper crc32_pclmul syscopyarea ghash_clmulni_intel sysfillrect sysimgblt fb_sys_fops aesni_intel lrw ppdev gf128mul drm glue_helper ablk_helper cryptd parport_pc parport i2c_piix4 virtio_balloon i...

...of one time it panic's on the java process, another time it panics on the swapper process. Both times the load balancer was configured to terminate connections faster than 25 seconds. I've done several searches and can't find anything remotely related to the below panic. Kernel BUG at tcp_output:943 invalid operand: 0000 [1] SMP CPU 2 Modules linked in: dell_rbu md5 ipv6 autofs4 i2c_dev i2c_core nfs lockd nfs_acl sunrpc dm_mirror dm_mod joydev button battery ac uhci_hcd ehci_hcd hw_random shpchp bnx2 ext3 jbd ata_piix libata megaraid_sas sd_mod scsi_mod Pid: 10645, comm: java Not tainted 2...

Forwarded message: > From full-disclosure-admin@lists.netsys.com Wed Apr 21 11:49:12 2004 > To: full-disclosure@lists.netsys.com > From: Darren Bounds <dbounds@intrusense.com> > Subject: [Full-Disclosure] IETF Draft - Fix for TCP vulnerability > Date: Tue, 20 Apr 2004 18:19:58 -0400 > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > >

...c:317 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip_output+0x1cc/0x860 net/ipv4/ip_output.c:405 dst_output include/net/dst.h:460 [inline] ip_local_out+0x95/0x160 net/ipv4/ip_output.c:124 ip_queue_xmit+0x8c6/0x18e0 net/ipv4/ip_output.c:504 tcp_transmit_skb+0x1b12/0x38b0 net/ipv4/tcp_output.c:1176 tcp_write_xmit+0x680/0x5190 net/ipv4/tcp_output.c:2367 __tcp_push_pending_frames+0xa0/0x250 net/ipv4/tcp_output.c:2543 tcp_push+0x538/0x770 net/ipv4/tcp.c:730 tcp_sendmsg_locked+0x2663/0x3b30 net/ipv4/tcp.c:1424 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1461 inet_sendmsg+0x11f/0x5e0 n...

Looks like the GSO is involved? I got this while running Dom0 only (no guests), with a BOINC/Rosetta@home application running on all 4 cores. changeset: 10649:8e55c5c11475 Build: x86_32p (pae). ------------[ cut here ]------------ kernel BUG at net/core/dev.c:1133! invalid opcode: 0000 [#1] SMP CPU: 0 EIP: 0061:[<c04dceb0>] Not tainted VLI EFLAGS: 00210297 (2.6.16.13-xen

1. I have a realtek network card and am using a cable modem router. Does anyone know if fixes for problems with these (see below) have been backported from HEAD to RELENG_7? 2. Is this a good time to upgrade to RELENG_7? 3. I read a post last week that advised that 7.1 is a long way off. Appreciate any advice on use of ULE 3.0 and ZFS prior to 7.1 and a comment on what is holding up 7.1. Thanks

Dear best guys, I really love 5.3 in many ways but here're some unbelievable transfer rates, after I went out and bought a pair of Intel GigaBit Ethernet Cards to solve my performance problem (*laugh*): (In short, see *** below) Tests were done with two Intel GigaBit Ethernet cards (82547EI, 32bit PCI Desktop adapter MT) connected directly without a switch/hub and "device

Hi, Is the http://xenbits.xensource.com/linux-2.6-xen.hg tree still being updated? if not, what''s the preferred Linux tree to track that has all of the Xen bits? Thanks, Muli _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

In crossbow, each mac_srs has a kernel thread called "mac_rx_srs_poll_ring" to poll the hardware and crossbow will wakeup this thread to poll packets from the hardware automatically. Does crossbow provide any method to disable the polling mechanism, for example disabling the this kernel thread? Thanks Zhihui -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi All, I followed the instructions here at http://bderzhavets.wordpress.com/2009/06/10/setup-fedora-11-pv-domu-at-xen-3-4-1-dom0-kernel-2-6-30-rc6-tip-on-top-of-fedora-11/ However, when I do a "make menuconfig", I cannot see any XEN related configuration options. What am I missing? Thank you. Mr. Teo En Ming Dip(Mechatronics Engineering) BEng(Hons)(Mechanical Engineering)