system/freebsd-src
system/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src synced 2024-10-16 21:34:10 +00:00
Code Issues Packages Projects Releases Wiki Activity

Remove disabled code, that is very unlikely to be ever enabled again,

Browse source 
as well as the comment that explains why is it disabled.
This commit is contained in:
Gleb Smirnoff 2014-09-19 05:23:47 +00:00
parent 94b52d99da
commit 22bfa4f5b1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=271852
1 changed files with 0 additions and 37 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

37
sys/netinet/ip_output.c
View file

@ -445,43 +445,6 @@ ip_output(struct mbuf *m, struct mbuf *opt, struct route *ro, int flags,
}
}
/*
* Both in the SMP world, pre-emption world if_transmit() world,
* the following code doesn't really function as intended any further.
*
* + There can and will be multiple CPUs running this code path
* in parallel, and we do no lock holding when checking the
* queue depth;
* + And since other threads can be running concurrently, even if
* we do pass this check, another thread may queue some frames
* before this thread does and it will end up partially or fully
* failing to send anyway;
* + if_transmit() based drivers don't necessarily set ifq_len
* at all.
*
* This should be replaced with a method of pushing an entire list
* of fragment frames to the driver and have the driver decide
* whether it can queue or not queue the entire set.
*/
#if 0
/*
* Verify that we have any chance at all of being able to queue the
* packet or packet fragments, unless ALTQ is enabled on the given
* interface in which case packetdrop should be done by queueing.
*/
n = ip_len / mtu + 1; /* how many fragments ? */
if (
#ifdef ALTQ
(!ALTQ_IS_ENABLED(&ifp->if_snd)) &&
#endif /* ALTQ */
(ifp->if_snd.ifq_len + n) >= ifp->if_snd.ifq_maxlen ) {
error = ENOBUFS;
IPSTAT_INC(ips_odropped);
ifp->if_snd.ifq_drops += n;
goto bad;
}
#endif
/*
* Look for broadcast address and
* verify user is allowed to send