mirrors/passt
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

tap, pasta: Handle incomplete tap sends for pasta too

Browse source 
Since a469fc39 ("tcp, tap: Don't increase tap-side sequence counter for
dropped frames") we've handled more gracefully the case where we get data
from the socket side, but are temporarily unable to send it all to the tap
side (e.g. due to full buffers).

That code relies on tap_send_frames() returning the number of frames it
successfully sent, which in turn gets it from tap_send_frames_passt() or
tap_send_frames_pasta().

While tap_send_frames_passt() has returned that information since b62ed9ca
("tap: Don't pcap frames that didn't get sent"), tap_send_frames_pasta()
always returns as though it succesfully sent every frame.  However there
certainly are cases where it will return early without sending all frames.
Update it report that properly, so that the calling functions can handle it
properly.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson 2023-11-08 14:17:53 +11:00 committed by Stefano Brivio
parent cf3eeba6c0
commit f0776eac07
1 changed files with 1 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
tap.c
View file

@ -330,8 +330,6 @@ static size_t tap_send_frames_pasta(const struct ctx *c,
case EWOULDBLOCK: case EWOULDBLOCK:
#endif #endif
case EINTR: case EINTR:
i--;
break;
case ENOBUFS: case ENOBUFS:
case ENOSPC: case ENOSPC:
break; break;
@ -341,7 +339,7 @@ static size_t tap_send_frames_pasta(const struct ctx *c,
} }
} }
return n; return i;
} }
/** /**